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

Conditions

1. Severe Acute Respiratory Syndrome

Interventions

1. Procedure: blood sampling

MeSH:Severe Acute Respiratory Syndrome Coronavirus Infections Syndrome

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

Conditions

1. COVID
2. Acute Respiratory Distress Syndrome

Interventions

1. Biological: blood sampling

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

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

Conditions

1. New Coronavirus Disease (COVID-19), Infection With SARS-CoV-2

Interventions

1. Other: blood sampling
2. Other: additional blood tubes

MeSH:Infection Communicable Diseases

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

Conditions

1. COVID-19

Interventions

1. Procedure: blood sampling

MeSH:Coronavirus Infections Severe Acute Respiratory Syndrome Thrombophilia

HPO:Hypercoagulability

This is a prospective observational cohort study that will define the prevalence and incidence of CA-SARS-Cov2 infection using serological and PCR tests in a group of subjects during deconfinement. The team wishes to include approximately 1000 subjects in this study. The health crisis through containment has also created unprecedented environmental conditions with the very clear decrease in economic activities and a consequent decrease in exposure to the main air pollutants. The aim is therefore to carry out a case-control study in which each subject will be his or her own control in unexposed condition (to PM2.5, PM10, NO...) then exposed (after the recovery of economic activity and the usual levels of air pollutants) and to measure the impact of these pollutants on the immune system and epigenetic markers taking into account seasonality. The occurrence of infectious, cardiovascular, allergic and autoimmune events will then be measured according to the immunological profiles measured at inclusion.

NCT04429594

Conditions

1. Coronavirus Infections

Interventions

1. Other: blood sampling

MeSH:Infection Communicable Diseases Coronavirus Infections Severe Acute Respiratory Syndrome

Severe Acute Respiratory Syndrome-Corona Virus-2 infection results in a mild infection in most of the patients. However, 15-20% require hospitalization, and among them, 15-20% will develop acute respiratory failure, leading to their admission in Intensive Care Unit. There are no accepted predictive criteria for aggravation. Severe forms of Coronavirus induced disease-19 (COVID-19) are the consequence of endotheliopathy, and hyperinflammatory and pro-coagulant state. The Triggering Receptor Expressed on Myeloid cells-1 (TREM-1) is an immunoreceptor that acts as an amplifier of the inflammatory response. TREM-1 is expressed on myeloid and endothelial cells. Its activation leads to endothelial activation and damage, hyperinflammatory, and pro-coagulant state. TREM-1 activation is associated with poor outcome during septic shock and myocardial infarction. We here aim at investigating the relationship between TREM-1 pathway activation and clinical degradation and outcome of COVID-19 hospitalized patients.

NCT04544891

Conditions

1. Covid19

Interventions

1. Other: blood sampling