View clinical trials related to Sars-CoV2.
Filter by:The ongoing pandemic caused by the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS CoV-2) has infected more than one hundred twenty million peoples worldwide one year after its onset with a case-fatality rate of almost 2%. The disease due to the coronavirus 2019 (i.e., COVID-19) is associated with a wide range of clinical symptoms. As the primary site of viral invasion is the upper respiratory airways, lung infection is the most common complication. Most infected patients are asymptomatic or experience mild or moderate form of the disease (80 %). A lower proportion (15%) develop severe pneumonia with variable level of hypoxia that may required hospitalization for oxygen therapy. In the most severe cases (5%), patients evolve towards critical illness with organ failure such as the acute respiratory distress syndrome (ARDS). At this stage, invasive mechanical ventilation is required in almost 70 % and the hospital mortality rises to 37 %. Immune cells are key players during SARS CoV-2 infection and several alterations have been reported including lymphocytes (T, B and NK) and monocytes depletion, and cells exhaustion. Such alterations were much more pronounced in patients with the most severe form of the disease. Beside, a dysregulated proinflammatory response has also been pointed out as a potential mechanism of lung damage. Finally, COVID-19 is associated with an unexpectedly high incidence of thrombosis which probably results from the viral invasion of endothelial cells. The investigators aim to explore prospectively the alterations of innate and adaptive immune cells during both the acute and the recovery phase of SARS CoV-2 pneumonia. Flow and Spectral cytometry will be used to perform deep subset profiling focusing on T, B, NK, NKT, gamma-gelta T, monocytes and dendritic cells. Each specific cell type will be further characterized using markers of activation/inhibition, maturation/differenciation and senescence as well as chemokines receptors. T-cell memory specificity will be explore using specific SARS CoV-2 pentamer. Platelet activation and circulating microparticles will be explore using flow cytometry. Serum SARS CoV-2 antibodies (IgA, IgM, IgG), serum cytokines, and serum biomarkers of alveolar epithelial and endothelial cells will be analyze using ELISA and correlate with the severity of the disease.
Assessment of impact of covid-19 on pediatric dental practice during first, second and third wave among a group of pediatric dentists.
Since the beginning of the year, the entire world has been concerned with the novel SARS-CoV2 virus. After the first case descriptions in Wuhan, there has been a rapid increase in the number of cases in Germany as well. In case of an illness with the virus, the affected patients can suffer from a slight infection of the upper respiratory tract up to severe lung failure and death. Interestingly, up to now, children are usually less severely affected than adults. However, the actual infection rates are probably similar to those of adults, even if the actual prevalence in children is difficult to quantify so far. The extent of the disease in children has also been less researched to date than in adults, and the same applies to pregnant women and their newborns. In addition, intensive research into possible therapeutic strategies and new vaccines is necessary. Here, however, the number of clinical studies in children is also far behind. In order to be able to understand the infection process and to protect the population with their children, comprehensive testing is necessary. However, this poses great challenges for local health authorities. Scientific investigations are also costly, but are already being carried out by many institutes. So far, for example in the SeBlueCo study, a very low prevalence of antibodies (1.3% of people) has been show. In children, however, both the routes of infection and the way the immune system deals with the virus are probably different than in adults. In this study the investigators now want to examine residual blood samples from pediatric patients of the pediatric and adolescent clinic in the time course after the beginning of the pandemic in order to better understand and monitor the development of antibody prevalence.
Since December 2019, China and then the rest of the world have been affected by the rapid spread of a new coronavirus infection called SARS-CoV-2 (severe acute respiratory syndrome coronavirus), the clinical expression of which is called Covid-19 (Coronavirus Disease 2019). It is estimated that around 20% of symptomatic patients will be severe enough to warrant hospitalization, of which around 5% will be in intensive care. Organ damage is multiple in Covid infection: respiratory, digestive, renal, neurological, cardiovascular due to the infection or its care. There is also a psychological and social impact of the infection or of the care that should be measured. In this context, investigator will assess the physical and psychological complaints of patients who have presented a severe form of SARS-CoV-2 infection. The final objective being to identify the needs to offer follow-up adapted to this emerging pathology.
The coronavirus (COVID-19) pandemic continues to grow exponentially. Angiotensin II levels are increased in human influenza and are associated with influenza viral load, disease progression and mortality. Preliminary data shows angiotensin II receptor blockers (ARBs) limits lung injury in murine influenza H7N9, as well as viral titre and RNA. ARBs could limit viral titre and organ injury in COVID-19. We will therefore collect clinical chart data and test angiotensin II levels of patients who are admitted to ICU with COVID-19 to determine whether there is a correlation between taking ARBs and clinical outcomes in these patients. Other blood biomarkers and clinical risk factors for COVID-19 have come to light in recent weeks. We include these in our observational analysis to help generate an understanding of COVID-19 presentation and blood biomarker characterization of disease.
The Lille University Hospital developped a research objective common to all the services which took care of patients, "suspected patient", "possible case", "probable case" or "confirmed case" infected with SARS-CoV-2 by constituting a prospective and a retrospective observational cohort which allowed pooling and sharing the resources and data collected. In the next two years the prospective cohort will allow to continue inclusions in a standardized way mainly for the constitution of a negative control group (excluded cases), to collect biological samples which had not been collected in the retrospective cohort so that the pathophysiology of the COVID-19 will be better apprehended as for example the inflammatory response to the viral infection. Finally in case of a second epidemic wave in the Hauts De France, it seems essential to have a defined research protocol which had already received all the necessary authorizations to guarantee cutting-edge (or quality ) research in a center like the Lille University Hospital.The aim objective of this study is to identify predictive factors of mortality to day 28 infection to SARS-CoV-2 for patients under medical care for the COVID-19 in the Lille University Hospital thanks to the constitution of an epidemiological, clinical, biological, immunological, genetic, microbiological, anatomopathologic, radiological, therapeutic database and so record the results of functional exploration exams.
To measure the effect of Ivermectin (sub-cutaneous) with or without zinc in treating the COVID-19 patients to clear viral load of SARS-CoV-2 along with reduction in severity of symptoms and length of hospitalization of patients with COVID-19.
The current coronavirus disease pandemic has posed a problem and a challenge for health systems globally. In the framework of a pandemic, a diagnosis is a key tool in containing and monitoring disease outbreaks. In this pandemic, the qPCR technique has become vitally important in virus detection, due to its wide detection and quantification range, and the high levels of sensitivity and specificity it presents. The methodology for diagnosing coronavirus by qPCR requires the prior extraction of viral genetic material, which is carried out using commercial kits created for this purpose. Currently, the high demand for supplies to carry out this technique has generated reagent shortage problems, including commercial kits for the extraction of viral genetic material. This research aims to evaluate a solution called AAA-Safe and its method, developed to optimize the diagnostic process, eliminating and replacing the viral RNA extraction stage. We hope that this alternative can be implemented in any molecular diagnostic laboratory, in order to speed up the delivery of a fast and safe diagnosis.
Novel Coronavirus (2019nCoV) or Severe Acute Respiratory Syndrome-Coronavirus-2 (SARS-CoV-2) that causes Coronavirus Disease 2019, or known as Covid-19 has recently become a global health emergency since it was first detected in Wuhan, the People Republic of China in December 2019. Since then, the prevalence has rapidly increased worldwide. In Indonesia, by the end of April 2020, around 10,000 patients have been tested positive for Covid-19 infection, with a case fatality rate of around 8%. The pathogenesis of Covid-19 is still under investigation and to our understanding, ACE2 receptors in the alveoli serve as the binding site of the S-protein of envelope spike virus of SARS-CoV-2. TMPRSS2 enzyme aids the fusion between cell membrane and capsid of the virus, allowing penetration of virus into the cell. Vesicles containing virion fuse with cell membrane and released as new virions. Cytopathic effect of the virus and its ability to overcome immune response determines the degree of infection. Differences in immunological profile among degrees of severity of Covid-19 may vary especially for the number of pro-inflammatory cytokines such as tumor necrosis factor alpha (TNF-α), interleukin (IL)-1, IL-6, IL-8, leukemia-inhibiting factors (LIF), immunological markers such as CXCR3+CD4+, CXCR3+CD8+ T cell and CXCR3+ NK cells, implying the ongoing cytokine storm. The previous studies also found increasing number for infection markers such as procalcitonin, ferritin, and C-reactive protein. The decreasing number of anti-inflammatory cytokines in such as IL-10 also supports this finding. Previous studies have shown immunomodulating and anti-inflammatory capacity of the mesenchymal stem cells (MSCs). MSCs contributed to the shifting of pro-inflammatory Th2 into anti-inflammatory Th2. One of the most recent study on the usage of MSCs on Covid-19 patients showed increased expression of leukemia inhibitory factor (LIF), which give rise to inhibitory effect of T lymphocyte and natural killer (NK) cell population. Vascular epithelial growth factor (VEGF) is found increasing following MSCs administration, which indicates the ability to improve the disrupted capillaries due to SARS-Cov-2 infection. The ability of MSCs in differentiating to alveolar cells is proven by the presence of SPM and SPC2, surfactant proteins produced by type II alveolar cells. MSCs are unable to be infected by SARS-CoV-2 since they don't have ACE2 receptors and TMPRSS2 enzyme.
Approximately 15% of patients with SARS-CoV-2 infection / COVID-19 develop a severe clinical course. This leads to hospitalization and potentially life threatening complications such as pneumonia and respiratory failure. Predictors for early detection and risk stratification are urgently needed. Moreover, only scarce information is available for long-term follow-up and late complications associated with infection. We therefore aimed to find predictors for severe courses of the novel disease as well as to establish strategies for therapeutic monitoring and follow-up.