| Title | Venue | Year | Impact | Source |
| 7201 | Impact of COVID-19 pandemic on pre-existing mental health problems • Relapse rates of all pre-existing mental health problems are commonly seen to be increased during COVID 19. • Quarantine is a stressful situation which increases psychiatric morbidity through many different pathways. • Policy changes which can promote tele-psychiatric services will play significant role in during the pandemic. | Asian J Psychiatr | 2020 | | LitCov and CORD-19 |
| 7202 | Case Study: Prolonged Infectious SARS-CoV-2 Shedding from an Asymptomatic Immunocompromised Individual with Cancer Long-term SARS-CoV-2 shedding was observed from the upper respiratory tract of a female immunocompromised patient with chronic lymphocytic leukemia and acquired hypogammaglobulinemia. Shedding of infectious SARS-CoV-2 was observed up to 70 days, and genomic and subgenomic RNA up to 105 days past initial diagnosis. The infection was not cleared after a first treatment with convalescent plasma, suggesting limited impact on SARS-CoV-2 in the upper respiratory tract within this patient. Several weeks after a second convalescent plasma transfusion, SARS-CoV-2 RNA was no longer detected. We observed marked within-host genomic evolution of SARS-CoV-2, with continuous turnover of dominant viral variants. However, replication kinetics in Vero E6 cells and primary human alveolar epithelial tissues were not affected. Our data indicate that certain immunocompromised patients may shed infectious virus for longer durations than previously recognized. Detection of subgenomic RNA is recommended in persistently SARS-CoV-2 positive individuals as a proxy for shedding of infectious virus. | Cell | 2020 | | LitCov and CORD-19 |
| 7203 | Humoral and circulating follicular helper T-cell responses in recovered patients with COVID-19 N/A | Nat Med | 2020 | | LitCov and CORD-19 |
| 7204 | Loss and grief amidst COVID-19: A path to adaptation and resilience Abstract The COVID-19 pandemic has posed an extreme threat to global health and become a leading cause of death worldwide. Loss, as a more encompassing theme, interweaves many aspects of people’s life in this challenging time. Failure to address the pressing needs of those experiencing loss and grief may result in poor mental and physical health. Recognizing the uniqueness of each individual and their loss and grief will provide opportunities to develop tailored strategies that facilitate functional adaptation to loss and promote mental health and wellbeing in this crisis. | Brain Behav Immun | 2020 | | LitCov and CORD-19 |
| 7205 | Assessing the severity of COVID-19 N/A | Epidemiol Serv Saude | 2020 | | LitCov and CORD-19 |
| 7206 | Stroke in patients with SARS-CoV-2 infection: case series BACKGROUND: Italy is one of the most affected countries by the coronavirus disease 2019 (COVID-19). The responsible pathogen is named severe acute respiratory syndrome coronavirus (SARS-CoV-2). The clinical spectrum ranges from asymptomatic infection to severe pneumonia, leading to intensive care unit admission. Evidence of cerebrovascular complications associated with SARS-CoV-2 is limited. We herein report six patients who developed acute stroke during COVID-19 infection. METHODS: A retrospective case series of patients diagnosed with COVID-19 using reverse-transcriptase polymerase chain reaction (RT-PCR) on nasopharyngeal swabs, who developed clinical and neuroimaging evidence of acute stroke during SARS-CoV-2 infection. RESULTS: Six patients were identified (5 men); median age was 69 years (range 57–82). Stroke subtypes were ischemic (4, 67%) and hemorrhagic (2, 33%). All patients but one had pre-existing vascular risk factors. One patient developed encephalopathy prior to stroke, characterized by focal seizures and behavioral abnormalities. COVID-19-related pneumonia was severe (i.e., requiring critical care support) in 5/6 cases (83%). Liver enzyme alteration and lactate dehydrogenase (LDH) elevation were registered in all cases. Four patients (67%) manifested acute kidney failure prior to stroke. Four patients (67%) had abnormal coagulation tests. The outcome was poor in the majority of the patients: five died (83%) and the remaining one (17%) remained severely neurologically affected (mRS: 4). CONCLUSIONS: Both ischemic and hemorrhagic stroke can complicate the course of COVI-19 infection. In our series, stroke developed mostly in patients with severe pneumonia and multiorgan failure, liver enzymes and LDH were markedly increased in all cases, and the outcome was poor. | J Neurol | 2020 | | LitCov and CORD-19 |
| 7207 | Coronavirus disease: A systematic review and meta-analysis to evaluate the impact of various comorbidities on serious events BACKGROUND AND AIMS: Currently there is limited knowledge on medical comorbidities and COVID-19; we conducted a systematic review and meta-analysis to evaluate the impact of various morbidities on serious events in COVID 19. METHODS: PubMed, Cochrane Central Register of Clinical Trials were searched on April 28, 2020, to extract published articles that reported the outcomes of COVID-19 patients. The search terms were “coronavirus” and “clinical characteristics”. ICU admission, mechanical ventilation, ARDS, Pneumonia, death was considered serious events. The comorbidities assessed in the study were Hypertension (HTN), Diabetes mellitus (DM), Cardiovascular diseases (CVD), Chronic obstructive pulmonary disease (COPD) and Chronic Kidney disease (CKD). Subsequently, comparisons between comorbidity patient group and the non-comorbidity patient groups, in terms of serious events were made using the pooled estimates of odd’s ratio (OR) RESULTS: We identified 688 published results and 16 studies with 3994 patients were included in the systematic review. Serious events were seen in 526(13.16%) patients. Presence of hypertension with OR 2.95, diabetes mellitus with OR 3.07, Cardio vascular disease with OR 4.58, COPD with OR 6.66 and Chronic kidney disease with OR 5.32 had significant association in patients with COVID 19 on having serious events. Presence of diabetes mellitus (OR 2.78)) had a significant impact on death in COVID 19 patients with a p-value 0.004. CONCLUSIONS: Presence of medical comorbidities in COVID-19 leads to higher risk of developing serious events i.e. ICU admission, mechanical intubation and mortality. The presence of Diabetes mellitus has a significant impact on mortality rate in COVID-19 patients. | Diabetes Metab Syndr | 2020 | | LitCov and CORD-19 |
| 7208 | A Universal Design of Betacoronavirus Vaccines against COVID-19, MERS and SARS Summary Vaccines are urgently needed to control the ongoing pandemic COVID-19 and previously-emerging MERS/SARS caused by coronavirus (CoV) infections. The CoV spike receptor-binding domain (RBD) is an attractive vaccine target but is undermined by limited immunogenicity. We describe a dimeric form of MERS-CoV RBD that overcomes this limitation. The RBD-dimer significantly increased neutralizing antibody (NAb) titers compared to conventional monomeric form and protected mice against MERS-CoV infection. Crystal structure showed RBD-dimer fully exposed dual receptor-binding motifs, the major target for NAbs. Structure-guided design further yielded a stable version of RBD-dimer as a tandem repeat single-chain (RBD-sc-dimer) which retained the vaccine potency. We generalized this strategy to design vaccines against COVID-19 and SARS, achieving 10-100-fold enhancement of NAb titers. RBD-sc-dimers in pilot scale production yielded high yields, supporting their scalability for further clinical development. The framework of immunogen design can be universally applied to other beta-CoV vaccines to counter emerging threats. | Cell | 2020 | | LitCov and CORD-19 |
| 7209 | Medical students' acceptance and perceptions of e-learning during the Covid-19 closure time in King Abdulaziz University, Jeddah BACKGROUND: Nowadays, there is a paradigm shift in medical education. This shift occurred following the Covid-19 crisis. The world uses digital e-learning to support the public health response to this pandemic. The study's objective was to determine the medical students’ acceptance and perceptions of e-learning during the Covid-19 closure time in Jeddah. METHODS: A cross-sectional, web-based study was done among 340 medical students from King Abdulaziz University, 2020. A standardized, electronic, self-administered, Google Form data collection sheet was distributed. It included the E-learning acceptance measure (ElAM) containing three constructs, namely: tutor quality (TQ), perceived usefulness (PU), and facilitating conditions (FC). The sheet also inquired about the students’ perceptions of the benefits, enablers, and barriers to e-learning. Descriptive, inferential statistics and multiple linear regression analyses were applied. RESULTS: Blackboard and Zoom were the most preferred Learning Management Systems (LMS) by our medical students. The mean score of ElAM was 102.82 ± 24.102. Better achievers obtained significantly (P < 0.001) higher scores in all ElAM constructs. About three-fifths of the students confirmed that e-learning substituted classical on-campus learning and was an adaptable, and less time-consuming method. The educator's good e-learning skills, the subject, instructional design, interaction, motivation, and good LMS were agreed as enablers of e-learning. However, most students accepted that clinical teaching is the most challenging learning outcome and that exams could be affected by low internet quality. CONCLUSION: Medical students moderately accepted e-learning during the Covid-19 Pandemic closure time. More training of the students and tutors, better designing e-courses, more interaction, motivation, and blended learning are recommended. | J Infect Public Health | 2020 | | LitCov and CORD-19 |
| 7210 | Burnout and its influencing factors between frontline nurses and nurses from other wards during the outbreak of Coronavirus Disease -COVID-19- in Iran OBJECTIVE. To assess burnout level during an outbreak of COVID-19 and to identify influencing factors between frontline nurses and nurses from other wards. METHODS. This cross-sectional study makes comparison between two groups of nurses including frontline (exposure group) and other nurses working in usual wards (non-exposure group) in Torbat Heydariyeh city, Iran. Oldenburg Burnout Inventory (OLBI), Job stress questionnaire (JSQ), and questionnaires of hospital resources, family support, and measuring the fear of COVID-19 were used as research instruments. RESULTS. The scores of job stress and burnout in the exposure group with COVID-19 infection were significantly higher than in the non-exposure group (p=0.006 and p=0.002, respectively). Although, in univariate linear regression, employment status (p=0.047), experience in taking care of patient confirmed or suspected with COVID-19 infection (p=0.006), hospital resources (p=0.047), and job stress (p<0.001) were considered as significant risk factors for COVID-19-related burnout. In multivariate regression analysis, job stress (p=0.031, β=0.308) was considered as an only factor that has a significant relationship with COVID-19-related burnout. CONCLUSION. The burnout level in frontline nurses was higher than other nurses, the most important influencing factor was the job stress. Regarding to negative effects of burnout on both physical and mental health nurses, it is suggested that a strong strategy be considered to reduce nurses' burnout to be able to control ongoing and future outbreaks successfully. | Invest Educ Enferm | 2020 | | LitCov and CORD-19 |
| 7211 | A modelling framework to assess the likely effectiveness of facemasks in combination with 'lock-down' in managing the COVID-19 pandemic COVID-19 is characterized by an infectious pre-symptomatic period, when newly infected individuals can unwittingly infect others. We are interested in what benefits facemasks could offer as a non-pharmaceutical intervention, especially in the settings where high-technology interventions, such as contact tracing using mobile apps or rapid case detection via molecular tests, are not sustainable. Here, we report the results of two mathematical models and show that facemask use by the public could make a major contribution to reducing the impact of the COVID-19 pandemic. Our intention is to provide a simple modelling framework to examine the dynamics of COVID-19 epidemics when facemasks are worn by the public, with or without imposed ‘lock-down’ periods. Our results are illustrated for a number of plausible values for parameter ranges describing epidemiological processes and mechanistic properties of facemasks, in the absence of current measurements for these values. We show that, when facemasks are used by the public all the time (not just from when symptoms first appear), the effective reproduction number, R(e), can be decreased below 1, leading to the mitigation of epidemic spread. Under certain conditions, when lock-down periods are implemented in combination with 100% facemask use, there is vastly less disease spread, secondary and tertiary waves are flattened and the epidemic is brought under control. The effect occurs even when it is assumed that facemasks are only 50% effective at capturing exhaled virus inoculum with an equal or lower efficiency on inhalation. Facemask use by the public has been suggested to be ineffective because wearers may touch their faces more often, thus increasing the probability of contracting COVID-19. For completeness, our models show that facemask adoption provides population-level benefits, even in circumstances where wearers are placed at increased risk. At the time of writing, facemask use by the public has not been recommended in many countries, but a recommendation for wearing face-coverings has just been announced for Scotland. Even if facemask use began after the start of the first lock-down period, our results show that benefits could still accrue by reducing the risk of the occurrence of further COVID-19 waves. We examine the effects of different rates of facemask adoption without lock-down periods and show that, even at lower levels of adoption, benefits accrue to the facemask wearers. These analyses may explain why some countries, where adoption of facemask use by the public is around 100%, have experienced significantly lower rates of COVID-19 spread and associated deaths. We conclude that facemask use by the public, when used in combination with physical distancing or periods of lock-down, may provide an acceptable way of managing the COVID-19 pandemic and re-opening economic activity. These results are relevant to the developed as well as the developing world, where large numbers of people are resource poor, but fabrication of home-made, effective facemasks is possible. A key message from our analyses to aid the widespread adoption of facemasks would be: ‘my mask protects you, your mask protects me’. | Proc Math Phys Eng Sci | 2020 | | LitCov and CORD-19 |
| 7212 | Pharmaceutical assessment of polyvinylpyrrolidone (PVP): As excipient from conventional to controlled delivery systems with a spotlight on COVID-19 inhibition Polyvinylpyrrolidone (PVP) is a water-soluble polymer obtained by polymerization of monomer N-vinylpyrrolidone. PVP is an inert, non-toxic, temperature-resistant, pH-stable, biocompatible, biodegradable polymer that helps to encapsulate and cater both hydrophilic and lipophilic drugs. These advantages enable PVP a versatile excipient in the formulation development of broad conventional to novel controlled delivery systems. PVP has tunable properties and can be used as a brace component for gene delivery, orthopedic implants, and tissue engineering applications. Based on different molecular weights and modified forms, PVP can lead to exceptional beneficial features with varying chemical properties. Graft copolymerization and other techniques assist PVP to conjugate with poorly soluble drugs that can inflate bioavailability and even introduces the desired swelling tract for their control or sustained release. The present review provides chemistry, mechanical, physicochemical properties, evaluation parameters, dewy preparation methods of PVP derivatives intended for designing conventional to controlled systems for drug, gene, and cosmetic delivery. The past and growing interest in PVP establishes it as a promising polymer to enhance the trait and performance of current generation pharmaceutical dosage forms. Furthermore, the scrutiny explores existing patents, marketed products, new and futuristic approaches of PVP that have been identified and scope for future development, characterization, and its use. The exploration spotlights the importance and role of PVP in the design of Povidone-iodine (PVP-I) and clinical trials to assess therapeutic efficacy against the COVID-19 in the current pandemic scenario. | J Drug Deliv Sci Technol | 2020 | | LitCov and CORD-19 |
| 7213 | Distinct clinical and immunological features of SARS-CoV-2 induced multisystem inflammatory syndrome in children N/A | J Clin Invest | 2020 | | LitCov and CORD-19 |
| 7214 | Cardiac manifestations in SARS-CoV-2 associated multisystem inflammatory syndrome in children: a comprehensive review and proposed clinical approach Initial reports on COVID-19 described children as largely spared from severe manifestations, with only 2–6% of children requiring intensive care treatment. However, since mid-April 2020, clusters of pediatric cases of severe systemic hyperinflammation and shock epidemiologically linked with COVID-19 have been reported. This condition was named as SARS-Cov-2-associated multisystem inflammatory syndrome in children and showed similarities to Kawasaki disease. Here, we present a narrative review of cases reported in literature and we discuss the clinical acute and follow-up management of these patients. Patients with SARS-Cov-2-associated multisystem inflammatory syndrome frequently presented with persistent fever, gastrointestinal symptoms, polymorphic rash, conjunctivitis, and mucosal changes. Elevated inflammatory markers and evidence of cytokine storm were frequently observed. A subset of these patients also presented with hypotension and shock (20–100%) from either acute myocardial dysfunction or systemic hyperinflammation/vasodilation. Coronary artery dilation or aneurysms have been described in 6–24%, and arrhythmias in 7–60%. Cardiac support, immunomodulation, and anticoagulation are the key aspects for the management of the acute phase. Long-term structured follow-up of these patients is required due to the unclear prognosis and risk of progression of cardiac manifestations. Conclusion: Multisystem inflammatory syndrome is a novel syndrome related to SARS-CoV-2 infection. Evidence is still scarce but rapidly emerging in the literature. Cardiac manifestations are frequent, including myocardial and coronary involvement, and need to be carefully identified and monitored over time. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s00431-020-03766-6) contains supplementary material, which is available to authorized users. | Eur J Pediatr | 2020 | | LitCov and CORD-19 |
| 7215 | Clinical characteristics of COVID-19 in 104 people with SARS-CoV-2 infection on the Diamond Princess cruise ship: a retrospective analysis BACKGROUND: The ongoing COVID-19 pandemic is a global threat. Identification of markers for symptom onset and disease progression is a pressing issue. We described the clinical features of people infected on board the Diamond Princess cruise ship who were diagnosed with asymptomatic severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection or mild or severe COVID-19, on admission to the Self-Defense Forces Central Hospital (Tokyo, Japan) and at the end of observation. METHODS: This retrospective, single-centre study included participants with laboratory-detected SARS-CoV-2 infection who were admitted to the Self-Defense Forces Central Hospital from Feb 11 to Feb 25, 2020. Clinical records, laboratory data, and radiological findings were analysed. Clinical outcomes were followed up until discharge or Feb 26, 2020, whichever came first. We defined asymptomatic infection as SARS-CoV-2 infection with no history of clinical signs and symptoms, severe COVID-19 as clinical symptoms of pneumonia (dyspnoea, tachypnoea, peripheral capillary oxygen saturation <93%, and need for oxygen therapy), and mild COVID-19 as all other symptoms. Clinical features on admission were compared among patients with different disease severity, including asymptomatic infection, at the end of observation. We used univariable analysis to identify factors associated with symptomatic illness among asymptomatic people infected with SARS-CoV-2 and disease progression in patients with COVID-19. FINDINGS: Among the 104 participants included in the final analysis, the median age was 68 years (IQR 47–75) and 54 (52%) were male. On admission, 43 (41%) participants were classified as asymptomatic, 41 (39%) as having mild COVID-10, and 20 (19%) as having severe COVID-19. At the end of observation, 33 (32%) participants were confirmed as being asymptomatic, 43 (41%) as having mild COVID-19, and 28 (27%) as having severe COVID-19. Serum lactate hydrogenase concentrations were significantly higher in the ten participants who were asymptomatic on admission but developed symptomatic COVID-19 compared with the 33 participants who remained asymptomatic throughout the observation period (five [50%] vs four [12%] participants; odds ratio 7·25, 95% CI 1·43–36·70; p=0·020). Compared with patients with mild disease at the end of observation, patients with severe COVID-19 were older (median age 73 years [IQR 55–77] vs 60 years [40–71]; p=0·028) and had more frequent consolidation on chest CT (13 [46%] of 28 vs nine [21%] of 43; p=0·035) and lymphopenia (16 [57%] vs ten [23%]; p=0·0055) on admission. INTERPRETATION: Older age, consolidation on chest CT images, and lymphopenia might be risk factors for disease progression of COVID-19 and contribute to improved clinical management. FUNDING: None. | Lancet Infect Dis | 2020 | | LitCov and CORD-19 |
| 7216 | Food Supply Chains and Covid-19: Impacts and Policy Lessons Covid‐19 placed unprecedented stresses on food supply chains. Farms faced bottlenecks for some inputs, notably seasonal labour. Processing was disrupted by labour shortages and shutdowns, especially in meat processing. Air freight, important for fruits and vegetables, was severely disrupted. Demand from restaurants and food service collapsed, while retail food demand surged. Yet supply chains in the developed world have been remarkably resilient to date. Store shelves were replenished as stockpiling behaviour subsided and as supply chain actors expanded operating hours, increased staff, simplified the product range and found alternative suppliers. This rapid recovery was facilitated by policy decisions to reduce border waiting times, to streamline certification procedures and to relax regulations on trade in food. Importantly, policymakers have so far mostly avoided a repeat of the mistakes of the 2007–2008 food price crisis, which was greatly exacerbated by export bans. Some bottlenecks remain, and there may be new supply risks as Covid‐19 spreads in Latin America. Overall, the biggest risk to food security is not food availability, but consumers’ loss of income. Safety nets and food assistance are essential to avoid an increase in hunger, especially in developing countries. | N/A | 2021 | | CORD-19 |
| 7217 | Membrane binding proteins of coronaviruses Coronaviruses (CoVs) infect many species causing a variety of diseases with a range of severities. Their members include zoonotic viruses with pandemic potential where therapeutic options are currently limited. Despite this diversity CoVs share some common features including the production, in infected cells, of elaborate membrane structures. Membranes represent both an obstacle and aid to CoV replication – and in consequence – virus-encoded structural and nonstructural proteins have membrane-binding properties. The structural proteins encounter cellular membranes at both entry and exit of the virus while the nonstructural proteins reorganize cellular membranes to benefit virus replication. Here, the role of each protein in membrane binding is described to provide a comprehensive picture of their role in the CoV replication cycle. | Future Virol | 2019 | | CORD-19 |
| 7218 | Guidelines for Perioperative Care for Liver Surgery: Enhanced Recovery After Surgery (ERAS) Society Recommendations N/A | World J Surg | 2016 | | CORD-19 |
| 7219 | Production of pharmaceutical proteins by transgenic animals Proteins started being used as pharmaceuticals in the 1920s with insulin extracted from pig pancreas. In the early 1980s, human insulin was prepared in recombinant bacteria and it is now used by all patients suffering from diabetes. Several other proteins and particularly human growth hormone are also prepared from bacteria. This success was limited by the fact that bacteria cannot synthesize complex proteins such as monoclonal antibodies or coagulation blood factors which must be matured by post-translational modifications to be active or stable in vivo. These modifications include mainly folding, cleavage, subunit association, γ-carboxylation and glycosylation. They can be fully achieved only in mammalian cells which can be cultured in fermentors at an industrial scale or used in living animals. Several transgenic animal species can produce recombinant proteins but presently two systems started being implemented. The first is milk from farm transgenic mammals which has been studied for 20 years and which allowed a protein, human antithrombin III, to receive the agreement from EMEA (European Agency for the Evaluation of Medicinal Products) to be put on the market in 2006. The second system is chicken egg white which recently became more attractive after essential improvement of the methods used to generate transgenic birds. Two monoclonal antibodies and human interferon-β1a could be recovered from chicken egg white. A broad variety of recombinant proteins were produced experimentally by these systems and a few others. This includes monoclonal antibodies, vaccines, blood factors, hormones, growth factors, cytokines, enzymes, milk proteins, collagen, fibrinogen and others. Although these tools have not yet been optimized and are still being improved, a new era in the production of recombinant pharmaceutical proteins was initiated in 1987 and became a reality in 2006. In the present review, the efficiency of the different animal systems to produce pharmaceutical proteins are described and compared to others including plants and micro-organisms. | Comp Immunol Microbiol Infect | 2008 | | CORD-19 |
| 7220 | A study on the psychological needs of nurses caring for patients with COVID-19 from the perspective of the existence, relatedness and growth theory OBJECTIVE: This study aimed to explore the psychological needs of nurses caring for patients with coronavirus disease 2019(COVID-19) and to propose corresponding interventions. METHODS: In-depth interviews were conducted with 10 nurses who cared for patients with COVID-19. Interview data were analyzed by category analysis from the perspective of the existence, relatedness, and growth theory (ERG). RESULTS: The existence needs were mainly reflected in health and security needs, whereas the relatedness needs consisting mainly of interpersonal needs, humanistic concern needs, and family needs; further, the growth needs were mainly reflected as a strong need for knowledge. Existence needs were the main needs during the epidemic, with health and security needs influencing each other. Humanistic concern needs were the most important of the relatedness needs; interpersonal and family needs were also growing. CONCLUSION: It is found that the existence, relatedness, and growth needs coexist in clinical nurses. It is helpful to take effective interventions to meet their needs if the needs of nurses caring for COVID-19 patients could be perceived well. | Int J Nurs Sci | 2020 | | LitCov and CORD-19 |
| 7221 | Invasive alien plant species: Their impact on environment, ecosystem services and human health Abstract Ecological perturbations caused by biotic invasion have been identified as a growing threat to global sustainability. Invasive alien plants species (IAPS) are considered to be one of the major drivers of biodiversity loss and thereby altering the ecosystem services and socio-economic conditions through different mechanisms. Although the ecological impacts of IAPS are well documented, there is a dearth of studies regarding their economic quantification, livelihood considerations, biotechnological prospects (phytoremediation, bioenergy, phyto-synthesis of nanoparticles, biomedical, industrial applications etc.) and human health risk assessments of IAPS. In this context, the current panoramic review aimed to investigate the environmental, socio-ecological and health risks posed by IAPS as well as the compounded impact of IAPS with habitat fragmentation, climate and land use changes. To this end, the need of an integrated trans-disciplinary research is emphasized for the sustainable management of IAPS. The management prospects can be further strengthened through their linkage with geo-spatial technologies (remote sensing and GIS) by mapping and monitoring the IAPS spread. Further, the horizon of IAPS management is expanded to ecological indicator perspectives of IAPS, biosecurity, and risk assessment protocols with critical discussion. Moreover, positive as well as negative implications of the IAPS on environment, health, ecosystem services and socio-economy (livelihood) are listed so that a judicious policy framework could be developed for the IAPS management in order to mitigate the human health implications. | Ecol Indic | 2020 | | CORD-19 |
| 7222 | Prevalence of COVID-19 Vaccine Side Effects among Healthcare Workers in the Czech Republic Background: COVID-19 vaccine side effects have a fundamental role in public confidence in the vaccine and its uptake process. Thus far, the evidence on vaccine safety has exclusively been obtained from the manufacturer-sponsored studies; therefore, this study was designed to provide independent evidence on Pfizer–BioNTech COVID-19 vaccine side effects. Methods: A cross-sectional survey-based study was carried out between January and February 2021 to collect data on the side effects following the COVID-19 vaccine among healthcare workers in the Czech Republic. The study used a validated questionnaire with twenty-eight multiple-choice items covering the participants’ demographic data, medical anamneses, COVID-19-related anamneses, general, oral, and skin-related side effects. Results: Injection site pain (89.8%), fatigue (62.2%), headache (45.6%), muscle pain (37.1%), and chills (33.9%) were the most commonly reported side effects. All the general side effects were more prevalent among the ≤43-year-old group, and their duration was mainly one day (45.1%) or three days (35.8%) following the vaccine. Antihistamines were the most common drugs associated with side effects, thus requiring further investigation. The people with two doses were generally associated with a higher frequency of side effects. Conclusions: The distribution of side effects among Czech healthcare workers was highly consistent with the manufacturer’s data, especially in terms of their association with the younger age group and the second dose. The overall prevalence of some local and systemic side effects was higher than the manufacturer’s report. Further independent studies on vaccine safety are strongly required to strengthen public confidence in the vaccine. | J Clin Med | 2021 | | LitCov and CORD-19 |
| 7223 | Antibody Tests in Detecting SARS-CoV-2 Infection: A Meta-Analysis The emergence of Coronavirus disease 2019 (COVID-19) caused by SARS-CoV-2 made imperative the need for diagnostic tests that can identify the infection. Although Nucleic Acid Test (NAT) is considered to be the gold standard, serological tests based on antibodies could be very helpful. However, individual studies are usually inconclusive, thus, a comparison of different tests is needed. We performed a systematic review and meta-analysis in PubMed, medRxiv and bioRxiv. We used the bivariate method for meta-analysis of diagnostic tests pooling sensitivities and specificities. We evaluated IgM and IgG tests based on Enzyme-linked immunosorbent assay (ELISA), Chemiluminescence Enzyme Immunoassays (CLIA), Fluorescence Immunoassays (FIA), and the Lateral Flow Immunoassays (LFIA). We identified 38 studies containing data from 7848 individuals. Tests using the S antigen are more sensitive than N antigen-based tests. IgG tests perform better compared to IgM ones and show better sensitivity when the samples were taken longer after the onset of symptoms. Moreover, a combined IgG/IgM test seems to be a better choice in terms of sensitivity than measuring either antibody alone. All methods yield high specificity with some of them (ELISA and LFIA) reaching levels around 99%. ELISA- and CLIA-based methods perform better in terms of sensitivity (90%–94%) followed by LFIA and FIA with sensitivities ranging from 80% to 89%. ELISA tests could be a safer choice at this stage of the pandemic. LFIA tests are more attractive for large seroprevalence studies but show lower sensitivity, and this should be taken into account when designing and performing seroprevalence studies. | Diagnostics (Basel) | 2020 | | LitCov and CORD-19 |
| 7224 | Biological and social aspects of COVID-19 related to oral health N/A | Braz Oral Res | 2020 | | LitCov and CORD-19 |
| 7225 | Return to training in the COVID-19 era: The physiological effects of face masks during exercise COVID‐19 outbreak has a profound impact on almost every aspect of life. Universal masking is recommended as a means of source control. Routinely exercising in a safe environment is an important strategy for healthy living during this crisis. As sports clubs and public spaces may serve a source of viral transmission, masking may become an integral part of physical activity. This study aimed to assess the physiological effects of wearing surgical masks and N95 respirators during short‐term strenuous workout. This was a multiple cross‐over trial of healthy volunteers. Using a standard cycle ergometry ramp protocol, each subject performed a maximal exercise test without a mask, with a surgical mask, and with an N95 respirator. Physiological parameters and time to exhaustion were compared. Each subject served his own control. Sixteen male volunteers (mean age and BMI of 34 ± 4 years and 28.72 ± 3.78 kg/m(2), respectively) completed the protocol. Heart rate, respiratory rate, blood pressure, oxygen saturation, and time to exhaustion did not differ significantly. Exercising with N95 mask was associated with a significant increase in end‐tidal carbon dioxide (EtCO(2)) levels. The differences were more prominent as the load increased, reaching 8 mm Hg at exhaustion (none vs N95, P = .001). In conclusion, in healthy subjects, short‐term moderate‐strenuous aerobic physical activity with a mask is feasible, safe, and associated with only minor changes in physiological parameters, particularly a mild increase in EtCO(2). Subjects suffering from lung diseases should have a cautious evaluation before attempting physical activity with any mask. | Scand J Med Sci Sports | 2020 | | LitCov and CORD-19 |
| 7226 | Impact of Coronavirus disease-19 lockdown on physical activity and energy expenditure among physiotherapy professionals and students using web-based open E-survey sent through WhatsApp, Facebook and Instagram messengers BACKGROUND: Coronavirus disease - 19 (COVID-19) spread throughout the world and become pandemic. To stop and control the rapid infection of COVID-19 lockdown is the best option. Sudden lockdown implies change in entire lifestyle of the population. Social isolation affects individual's lives by greater reduction in their physical activity, which might increase chance of infection by reducing the immunity. To what extent, the physical activity is reduced during this lockdown period among physiotherapy professionals and students who propagate physical activity is not known. Hence, we aimed to evaluate the impact of COVID-19 lockdown on physical activity level and energy utilization among physiotherapy professionals and students. MATERIAL AND METHODS: One hundred and forty three volunteered physiotherapy professionals and students participated in web based open E-survey. The survey was carried out by sending the Google Forms link for International Physical activity questionnaire-short form (IPAQ-SF) through social networking sites using Google forms, to gather amount of PA before and during COVID-19 lockdown period and analysed using Wilcoxon signed rank test. RESULTS: Among identified 261 potential survey participants, 143 responded reaching response rate of 54.8%. Total physical activity before and during COVID–19 lockdown period were 7809.7 (3849.7–11769.8) MET-min/week and 4135.7 (867.2–7404.1) MET-min/week; p < 0.0001. While energy expenditure before and during COVID–19 lockdown period were 8189.8 (4242.1–12137.6) kcal/wk and 4221.7 (1004.6–7438.8) kcal/wk; p < 0.0001. CONCLUSION: A significant reduction in self-report PA levels were observed among physiotherapy professionals and students were observed during COVID–19 lockdown period. | Clin Epidemiol Glob Health | 2020 | | LitCov and CORD-19 |
| 7227 | Musculoskeletal Consequences of COVID-19 N/A | J Bone Joint Surg Am | 2020 | | LitCov and CORD-19 |
| 7228 | N-terminal domain antigenic mapping reveals a site of vulnerability for SARS-CoV-2 The SARS-CoV-2 spike (S) glycoprotein contains an immunodominant receptor-binding domain (RBD) targeted by most neutralizing antibodies (Abs) in COVID-19 patient plasma. Little is known about neutralizing Abs binding to epitopes outside the RBD and their contribution to protection. Here, we describe 41 human monoclonal Abs (mAbs) derived from memory B cells, which recognize the SARS-CoV-2 S N-terminal domain (NTD) and show that a subset of them neutralize SARS-CoV-2 ultrapotently. We define an antigenic map of the SARS-CoV-2 NTD and identify a supersite (designated site i) recognized by all known NTD-specific neutralizing mAbs. These mAbs inhibit cell-to-cell fusion, activate effector functions, and protect Syrian hamsters from SARS-CoV-2 challenge, albeit selecting escape mutants in some animals. Indeed, several SARS-CoV-2 variants, including the B.1.1.7, B.1.351 and P1 lineages, harbor frequent mutations within the NTD supersite suggesting ongoing selective pressure and the importance of NTD-specific neutralizing mAbs for protective immunity and vaccine design. | Cell | 2021 | | LitCov and CORD-19 |
| 7229 | Understanding the impact of the COVID-19 pandemic on career development: Insights from cultural psychology The COVID-19 pandemic has become a significant global crisis that requires individuals, organizations and nations to take necessary steps to cope. To develop a comprehensive and systematic understanding of the impact of COVID-19 pandemic on individuals' career development and possible coping strategies, we adopt a cultural psychological perspective to analyze: (1) how internalized cultural orientations (e.g., values, thinking styles, regulatory focus) may shape individual responses and coping strategies to COVID-19 pandemic; (2) how national culture influences the collective actions and norms during COVID-19 pandemic; (3) how to integrate insights from cultural psychology to enrich research on career management strategies in response to a fast changing environment. While this paper primarily focuses on the role of national culture (i.e., the shared meanings and practices in a nation), these discussions can largely be applied to other cultural settings. Practical implications are also discussed. | J Vocat Behav | 2020 | | LitCov and CORD-19 |
| 7230 | Daily medical education for confined students during COVID-19 pandemic: A simple videoconference solution The outbreak of coronavirus disease 2019 caused by severe acute respiratory syndrome coronavirus 2 infection has recently spread globally and is now a pandemic. As a result, university hospitals have had to take unprecedented measures of containment, including asking nonessential staff to stay at home. Medical students practicing in the surgical departments find themselves idle, as nonurgent surgical activity has been canceled, until further notice. Likewise, universities are closed and medical training for students is likely to suffer if teachers do not implement urgent measures to provide continuing education. Thus, we sought to set up a daily medical education procedure for surgical students confined to their homes. We report a simple and free teaching method intended to compensate for the disappearance of daily lessons performed in the surgery department using the Google Hangouts application. This video conference method can be applied to clinical as well as anatomy lessons. | Clin Anat | 2020 | | LitCov and CORD-19 |
| 7231 | Risk factors for mortality among COVID-19 patients Abstract Aims COVID-19 is a current globalpandemic. However, comprehensive global data analyses for its mortality risk factors are lacking. The current investigation aimed to assess the predictors of death among COVID-19 patients from worldwide open access data. Methods A total of 828 confirmed cases of COVID-19 with definite outcomes were retrospectively identified from open access individual-level worldwide data. Univariate followed by multivariable regression analysis were used to evaluate the association between potential risk factors and mortality. Results Majority of the patients were males 59.1% located in Asia 69.3%. Based on the data, older age (adjusted odds ratio (aOR), 1.079; 95% confidence intervals (95% CI), 1.064-1.095 per year increase), males (aOR, 1.607; 95% CI, 1.002-2.576), patients with hypertension (aOR, 3.576; 95% CI, 1.694-7.548), diabetes mellitus (aOR, 12.234; 95% CI, 4.126-36.272), and patients located in America (aOR, 7.441; 95% CI, 3.546-15.617) were identified as the risk factors of mortality among COVID-19 patients. Conclusions Males, advanced age, hypertension patients, diabetes mellitus patients, and patients located in America were the independent risk factors of death among COVID-19 patients. Extra attention is required to be given to these factors and additional studies on the underlying mechanisms of these effects. | Diabetes Res Clin Pract | 2020 | | LitCov and CORD-19 |
| 7232 | Prevalence and Influencing Factors of Anxiety and Depression Symptoms in the First-Line Medical Staff Fighting Against COVID-19 in Gansu BACKGROUND: The outbreak of novel coronavirus pneumonia (COVID-19) has brought enormous physical and psychological pressure on Chinese medical staff. It is extremely important to understand the prevalence and influencing factors of anxiety and depression symptoms in first-line anti-epidemic medical staff and their coping styles for these negative emotions. METHODS: A cross-sectional survey was conducted in Gansu (China), with a questionnaire packet which consisted of the self-rating anxiety scale (SAS), self-rating depression scale (SDS), and the simplified coping style questionnaire (SCSQ). A total of 79 doctors and 86 nurses participated in the survey. Correlation analysis was performed to explore the relationship between SAS, SDS, and SCSQ score. A linear regression model was used to determine the influencing factors for anxiety or depression symptoms. RESULTS: The prevalence rates of anxiety and depression symptoms among doctors was 11.4% and 45.6%, respectively. History of depression or anxiety (T=-2.644, p= 0.010, 95%CI: -10.514~-1.481) was shown to be a risk factor for anxiety symptoms in doctors, while being male (T=2.970, p=0.004, 95%CI: 2.667~13.521) was a protective factor for depression. The prevalence rate of anxiety and depression symptoms among nurses was 27.9% and 43.0%, respectively. History of depression or anxiety was a common risk factor for anxiety symptoms (T=-3.635, p=0.000, 95%CI: -16.360~-4.789) and depression symptoms (T=-2.835, p=0.005, 95%CI:-18.238~-3.254) in nurses. The results of partial correlation analysis (controlled for gender and history of depression or anxiety) indicated that the total score of positive coping was negatively correlated with the total score of anxiety (r=-0.182, p=0.002) and depression (r=-0.253, p=0.001). CONCLUSIONS: The first-line anti-epidemic medical staff have high anxiety and depression symptoms and adopting positive coping styles will help to improve their negative emotions. | Front Psychiatry | 2020 | | LitCov and CORD-19 |
| 7233 | COVID-19 pandemic repercussions on plastic and antiviral polymeric textile causing pollution on beaches and coasts of South America The propagation of the COVID-19 pandemic worldwide has been alarming in the last months. According to recommendations of the World Health Organization (WHO), the use of face masks is essential for slowing down the transmission rate of COVID-19 in human beings. This pandemic has generated a substantial increase in the use, as well as in the production, of face masks and other elements (gloves, face protectors, protective suits, safety shoes) manufactured with polymeric materials, including antiviral textiles most of which will end as microplastic pools. Focusing on South America, the use and mismanagement of this type of personal protective equipment (PPE) represents an environmental problem. Added to this issue are the increase in the use of single-use plastic, and the reduction of plastic recycling due to the curfew generated by the pandemic, further aggravating plastic pollution on coasts and beaches. Recently, researchers have developed antiviral polymeric textile technology composed of Ag and Cu nanoparticles for PPE to reduce the contagion and spread of COVID-19. Antiviral polymeric textile wastes could also have long-term negative repercussions on aquatic environments, as they are an important emerging class of contaminants. For this reason, this work provides reflections and perspectives on how the COVID-19 pandemic can aggravate plastic pollution on beaches and coastal environments, consequently increasing the damage to marine species in the coming years. In addition, the potential impact of the pandemic on waste management systems is discussed here, as well as future research directions to improve integrated coastal management strategies. | Sci Total Environ | 2020 | | LitCov and CORD-19 |
| 7234 | Loneliness, Mental Health and Substance Use among US Young Adults during COVID-19 N/A | J Psychoactive Drugs | 2021 | | LitCov and CORD-19 |
| 7235 | The REMAP-CAP (Randomized Embedded Multifactorial Adaptive Platform for Community-acquired Pneumonia) Study. Rationale and Design There is broad interest in improved methods to generate robust evidence regarding best practice, especially in settings where patient conditions are heterogenous and require multiple concomitant therapies. Here, we present the rationale and design of a large, international trial that combines features of adaptive platform trials with pragmatic point-of-care trials to determine best treatment strategies for patients admitted to an intensive care unit with severe community-acquired pneumonia. The trial uses a novel design, entitled “a randomized embedded multifactorial adaptive platform.” The design has five key features: 1) randomization, allowing robust causal inference; 2) embedding of study procedures into routine care processes, facilitating enrollment, trial efficiency, and generalizability; 3) a multifactorial statistical model comparing multiple interventions across multiple patient subgroups; 4) response-adaptive randomization with preferential assignment to those interventions that appear most favorable; and 5) a platform structured to permit continuous, potentially perpetual enrollment beyond the evaluation of the initial treatments. The trial randomizes patients to multiple interventions within four treatment domains: antibiotics, antiviral therapy for influenza, host immunomodulation with extended macrolide therapy, and alternative corticosteroid regimens, representing 240 treatment regimens. The trial generates estimates of superiority, inferiority, and equivalence between regimens on the primary outcome of 90-day mortality, stratified by presence or absence of concomitant shock and proven or suspected influenza infection. The trial will also compare ventilatory and oxygenation strategies, and has capacity to address additional questions rapidly during pandemic respiratory infections. As of January 2020, REMAP-CAP (Randomized Embedded Multifactorial Adaptive Platform for Community-acquired Pneumonia) was approved and enrolling patients in 52 intensive care units in 13 countries on 3 continents. In February, it transitioned into pandemic mode with several design adaptations for coronavirus disease 2019. Lessons learned from the design and conduct of this trial should aid in dissemination of similar platform initiatives in other disease areas. Clinical trial registered with www.clinicaltrials.gov (NCT02735707). | Ann Am Thorac Soc | 2020 | | LitCov and CORD-19 |
| 7236 | Impact of COVID-19Quarantine on Low Back Pain Intensity, Prevalence and Associated Risk Factors among Adult Citizens Residing in Riyadh (Saudi Arabia): A Cross-Sectional Study This study aimed to estimate the effect of the coronavirus disease 2019 (COVID-19) quarantine on low back pain (LBP) intensity, prevalence, and associated risk factors among adults in Riyadh (Saudi Arabia). A total of 463 adults (259 males and 204 females) aged between 18 and 64 years and residing in Riyadh (Saudi Arabia) participated in this cross-sectional study. A self-administered structured questionnaire composed of 20 questions regarding demographic characteristics, work- and academic-related aspects, physical activity (PA), daily habits and tasks, and pain-related aspects was used. The LBP point prevalence before the quarantine was 38.8%, and 43.8% after the quarantine. The LBP intensity significantly increased during the quarantine. The low back was also the most common musculoskeletal pain area. Furthermore, during the quarantine, a significantly higher LBP intensity was reported by those individuals who (a) were aged between 35 and 49 years old, (b) had a body mass index equal to or exceeding 30, (c) underwent higher levels of stress, (d) did not comply with the ergonomic recommendations, (e) were sitting for long periods, (f) did not practice enough physical activity (PA), and (g) underwent teleworking or distance learning. No significant differences were found between genders. The COVID-19 quarantine resulted in a significant increase in LBP intensity, point prevalence, and most associated risk factors. | Int J Environ Res Public Healt | 2020 | | LitCov and CORD-19 |
| 7237 | Pathophysiology of Diarrhea in Calves Infectious diarrhea in calves is most commonly associated with enterotoxigenic Escherichia coli, Cryptosporidium parvum, rotavirus, coronavirus, or some combination of these pathogens. Each of these agents leads to diarrhea through either secretion or malabsorption/maldigestion, though the specific mechanisms and pathways may differ. Specific pharmacologic control and treatment are dependent on gaining a greater understanding of the pathophysiology of these organisms. | Vet Clin North Am Food Anim Pr | 2009 | | CORD-19 |
| 7238 | First Things First: Parent Psychological Flexibility and Self-Compassion During COVID-19 The COVID-19 pandemic has brought about significant stress and anxiety for many parents around the world. Psychological flexibility and self-care are fundamental aspects of psychological health. For parents, shaping these processes may help promote family nurturance, support children’s prosocial behavior, and provide effective and consistent use of evidence-based parenting “kernels.” The goal of this article is to provide practitioners with evidence-based tools that will support psychological flexibility, self-care, and positive parenting behaviors in caregivers during COVID-19 and beyond. | Behav Anal Pract | 2020 | | LitCov and CORD-19 |
| 7239 | Could Chloroquine /Hydroxychloroquine Be Harmful in COVID-19 Treatment? | Clin Infect Dis | 2020 | | LitCov and CORD-19 |
| 7240 | Mental distress and influencing factors in nurses caring for patients with COVID-19 N/A | Nurs Crit Care | 2021 | | LitCov and CORD-19 |
| 7241 | Expression of the SARS-CoV-2 Entry Proteins, ACE2 and TMPRSS2, in Cells of the Olfactory Epithelium: Identification of Cell Types and Trends with Age [Image: see text] The COVID-19 pandemic revealed that there is a loss of smell in many patients, including in infected but otherwise asymptomatic individuals. The underlying mechanisms for the olfactory symptoms are unclear. Using a mouse model, we determined whether cells in the olfactory epithelium express the obligatory receptors for entry of the SARS-CoV-2 virus by using RNAseq, RT-PCR, in situ hybridization, Western blot, and immunocytochemistry. We show that the cell surface protein ACE2 and the protease TMPRSS2 are expressed in sustentacular cells of the olfactory epithelium but not, or much less, in most olfactory receptor neurons. These data suggest that sustentacular cells are involved in SARS-CoV-2 virus entry and impairment of the sense of smell in COVID-19 patients. We also show that expression of the entry proteins increases in animals of old age. This may explain, if true also in humans, why individuals of older age are more susceptible to the SARS-CoV-2 infection. | ACS Chem Neurosci | 2020 | | LitCov and CORD-19 |
| 7242 | Risks to children and young people during covid-19 pandemic N/A | BMJ | 2020 | | LitCov and CORD-19 |
| 7243 | Self-care strategies in response to nurses' moral injury during COVID-19 pandemic These are strange and unprecedented times in the wake of the COVID-19 pandemic. Most frontline healthcare professionals have never witnessed anything like this before. As a result, staff may experience numerous and continuous traumatic events, which in many instances, will negatively affect their psychological well-being. Particularly, nurses face extraordinary challenges in response to shifting protocols, triage, shortages of resources, and the astonishing numbers of patients who require care in expedited time constraints. As most healthcare workers are passionate nursing professionals, frustration and often a sense of powerlessness occur when they find themselves unable to provide needed care to their patients. The overwhelming number of deaths, patients isolated and dying alone, and the ever-present fear of being infected and then infecting colleagues, family, friends due to the lack of protective gear or known protocols takes its toll on emotional and psychological well-being. For nurses, the experience of this significant (hopefully once-in-a-lifetime) event can inflict on-going moral injury. Nurses affected by this trauma require education, coping tools, and therapy to help avoid or alleviate the adverse effects on their well-being. Institutions must provide these resources to tend to the well-being of their healthcare staff, during and beyond the pandemic. This article aims to investigate moral distress—considering it as a moral injury—and offer tools and recommendations to support healthcare nurses as they respond to this crisis and its aftermath. | Nurs Ethics | 2020 | | LitCov and CORD-19 |
| 7244 | On a knife's edge of a COVID-19 pandemic: is containment still possible? N/A | Public Health Res Pract | 2020 | | LitCov and CORD-19 |
| 7245 | Individual variation of the SARS-CoV-2 receptor ACE2 gene expression and regulation The COVID‐19 coronavirus is now spreading worldwide. Its pathogen, SARS‐CoV‐2, has been shown to use angiotensin‐converting enzyme 2 (ACE2) as its host cell receptor, same as the severe acute respiratory syndrome coronavirus (SARS‐CoV) in 2003. Epidemiology studies found males although only slightly more likely to be infected than females account for the majority of the severely ill and fatality, which also bias for people older than 60 years or with metabolic and cardiovascular diseases. Here by analyzing GTEx and other public data in 30 tissues across thousands of individuals, we found a significantly higher level in Asian females, an age‐dependent decrease in all ethnic groups, and a highly significant decrease in type II diabetic patients of ACE2 expression. Consistently, the most significant expression quantitative loci (eQTLs) contributing to high ACE2 expression are close to 100% in East Asians, >30% higher than other ethnic groups. A shockingly common enrichment of viral infection pathways was found among ACE2 anti‐expressed genes, and multiple binding sites of virus infection related transcription factors and sex hormone receptors locate at ACE2 regulatory regions. Human and mice data analysis further revealed ACE2 expression is reduced in T2D patients and with inflammatory cytokine treatment and upregulated by estrogen and androgen (both decrease with age). Our findings revealed a negative correlation between ACE2 expression and COVID‐19 fatality at both population and molecular levels. These results will be instrumental when designing potential prevention and treatment strategies for ACE2 binding coronaviruses in general. | Aging Cell | 2020 | | LitCov and CORD-19 |
| 7246 | Surgical mask vs N95 respirator for preventing influenza among Healthcare workers: a randomized trial N/A | JAMA | 2009 | | CORD-19 |
| 7247 | A 9,000-year record of Chagas' disease N/A | Proc Natl Acad Sci U S A | 2004 | | CORD-19 |
| 7248 | A Comprehensive Review of COVID-19 Virology, Vaccines, Variants and Therapeutics Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative pathogen of the coronavirus disease 2019 (COVID-19), has caused more than 179 million infections and 3.8 million deaths worldwide. Throughout the past year, multiple vaccines have already been developed and used, while some others are in the process of being developed. However, the emergence of new mutant strains of SARS-CoV-2 that have demonstrated immune-evading characteristics and an increase in infective capabilities leads to potential ineffectiveness of the vaccines against these variants. The purpose of this review article is to highlight the current understanding of the immunological mechanisms of the virus and vaccines, as well as to investigate some key variants and mutations of the virus driving the current pandemic and their impacts on current management guidelines. We also discussed new technologies being developed for the prevention, treatment, and detection of SARS-CoV-2. In this paper, we thoroughly reviewed and provided crucial information on SARS-CoV-2 virology, vaccines and drugs being used and developed for its prevention and treatment, as well as important variant strains. Our review paper will be beneficial to health care professionals and researchers so they can have a better understanding of the basic sciences, prevention, and clinical treatment of COVID-19 during the pandemic. This paper consists of the most updated information that has been available as of June 21, 2021. | Curr Med Sci | 2021 | | LitCov and CORD-19 |
| 7249 | Markers and Biomarkers of Endothelium: When Something Is Rotten in the State Endothelium is a community of endothelial cells (ECs), which line the blood and lymphatic vessels, thus forming an interface between the tissues and the blood or lympha. This strategic position of endothelium infers its indispensable functional role in controlling vasoregulation, haemostasis, and inflammation. The state of endothelium is simultaneously the cause and effect of many diseases, and this is coupled with modifications of endothelial phenotype represented by markers and with biochemical profile of blood represented by biomarkers. In this paper, we briefly review data on the functional role of endothelium, give definitions of endothelial markers and biomarkers, touch on the methodological approaches for revealing biomarkers, present an implicit role of endothelium in some toxicological mechanistic studies, and survey the role of reactive oxygen species (ROS) in modulation of endothelial status. | Oxid Med Cell Longev | 2017 | | CORD-19 |
| 7250 | Organ-specific features of natural killer cells Natural killer (NK) cells can be swiftly mobilized by danger signals and are among the earliest arrivals at target organs of disease. However, the role of NK cells in mounting inflammatory responses is often complex and sometimes paradoxical. Here, we examine the divergent phenotypic and functional features of NK cells, as deduced largely from experimental mouse models of pathophysiological responses in the liver, mucosal tissues, uterus, pancreas, joints and brain. Moreover, we discuss how organ-specific factors, the local microenvironment and unique cellular interactions may influence the organ-specific properties of NK cells. | Nat Rev Immunol | 2011 | | CORD-19 |
