There are 4 clinical trials

Clinical Trials

1 The Interaction Between Severe Acute Respiratory Distress Syndrome Viral Proteins and Monocytes

Severe acute respiratory syndrome (SARS) is a new threat to public health since November, 2002. The SARS is highly contagious and is believed to be transmitted by person-to-person through droplet and direct contact. The patients present with fever, chills, cough, myalgia, dyspnea, and diarrhea. The symptoms aggravate in the second week and nearly 40% of the patients develop respiratory failure that requires assisted ventilation. The mortality rate is reported as 6.5%-7%. After several months, the world scientists found the etiology to be a new coronavirus not belonging to the previous coronavirus group I, II and III. The new virus is called SARS associated coronavirus (SARS-CoV). Although the high morbidity and mortality of SARS occurred in adults, there was rare mortality reported in the children. The report from Hong Kong pointed out that the symptoms of SARS in younger children were milder and the clinical course was not as aggressive as in adults. Therefore, the aim of the project is to design the experiment to see the differences of immunological responses to SARS-CoV protein in healthy younger children, teenagers, and adults. The investigators hope that the result could explain the reason for milder disease in younger children and the immunological pathogenesis of SARS.

NCT00172263 Severe Acute Respiratory Syndrome Procedure: blood sampling

MeSH:Severe Acute Respiratory Syndrome Coronavirus Infections Syndrome

2 Impact of Previous Treatment With Angiotensin II Receptor Blockers in Patients With SARS-Cov2 Infection Admitted to the Intensive Care Unit on Survival and Severity of the Disease (COVID-ARA2)

The actual pandemic infection related to SARS-CoV2 results in viral pneumonitis (COVID-19), that may, in the more severe cases, lead the patients to the intensive care unit (ICU). The more frequent presentation is acute respiratory distress syndrome (ARDS). To penetrate cells, SARS-CoV2 uses Angioconvertase type 2 (ACE2) as a cellular entry receptor. ACE2 belong to the renin-angiotensin-aldosteron system (SRAA), and ACE2 levels are directly modified when SRAA inhibitors are administred to patients, and ACE2 level increases particularely with Angiotensin II Receptor blockers (ARA2) use. The aim of our study is to determine ACE2 level and activity in patients with SARSCoV2 infection admitted to the intensive care unit (ICU). COVID ARA2 is a propsective cohort of patient with blood sampling at the day of admission, day 3 and day 7.

NCT04337190 COVID Acute Respiratory Distress Syndrome Biological: blood sampling

MeSH:Respiratory Distress Syndrome, Newborn Respiratory Distress Syndrome, Adult Acute Lung Injury

3 Study of Immune Response During SARS-CoV-2 Infection

Study of the cellular immune response during the SARS-CoV-2 infection and identify cytokinic profiles in caregivers exposed to the virus with asymptomatic forms of COVID19, patients with an asymptomatic form followed in ambulatory care and patients hospitalized in the infectious disease department or in resuscitation at the CHU de Nice COVID-19 according to their clinical symptomatology and the kinetics of clinical aggravation using functional tests evaluating the Th1 type immune response. The project is divided into a clinical component comprising the study of the immune response in different populations and a cellular component focusing on the in vitro study of different immunomodulating treatments on their ability to induce an anti-viral Th1

NCT04355351 New Coronavirus Disease (COVID-19), Infection With SARS-CoV-2 Other: blood sampling Other: additional blood tubes

MeSH:Infection Communicable Diseases

4 Study of the Vascular Compartment and Hypercoagulability During Coronavirus Infection COVID-19

Coronavirus COVID-19 is an emerging virus also called Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). Eighty percent of patients are poor or asymptomatic. However, there are major respiratory complications for some patients, requiring intensive care hospitalization and possibly leading to death in 5% of cases. One of the hypotheses put forward is that much of the pathophysiology is due to endothelial dysfunction associated with disseminated intravascular coagulation. The covid-19 pathology could induce coagulation impairment as observed during sepsis. An increase in D-dimer levels during covid-19 disease is itself associated with excess mortality. While D-dimers are highly sensitive, they are not specific for clotting activity. They may be increased in many other circumstances, particularly in inflammation. On the other hand, the infection stimulates the release of extracellular vesicles. These vesicles, of multiple cellular origin, are an actor of vascular homeostasis, and participate in the state of hyperactivation of coagulation. They have a major role in the prothrombotic state and the development of coagulopathy associated with sepsis. The aim of our monocentric prospective study would be to study early and more specific markers of hypercoagulability and markers of routine endothelial dysfunction, as soon as the patient is hospitalized, in order to predict the risk of hospitalization in intensive care.

NCT04367662 COVID-19 Procedure: blood sampling

MeSH:Coronavirus Infections Severe Acute Respiratory Syndrome Thrombophilia

HPO:Hypercoagulability

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