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Pro-inflammatory Role of Blood Platelets in Critically Ill Patients With Septic Shock: an Observational Study.

2019-09-12 02:34:41 | BioPortfolio

Summary

Blood platelets play a major role in the inflammatory response. A dysregulation of platelets activation may be one of the contributors to tissue damage in critically ill patients with septic shock. The main objective of this study is to compare platelet activation markers levels (including plasma concentration in CD154, beta thromboglobulin, platelet factor 4, platelet microparticles, soluble CD62, RANTES, GRO-alpha and HMGB-1) at the early phase of a septic shock and a systemic inflammatory response syndrome (SIRS).

Description

Sepsis is defined as life-threatening organ dysfunction due to dysregulated host response to infection which can lead to many failures of vital organs (kidneys, lungs, liver) in critically ill patients. It is accompanied at an early phase by both a proinflammatory and procoagulant state generating many platelet activators. Given their essential role in the inflammatory response, a dysregulation of platelets activation may be one of the contributors to tissue damage. To determine if platelet activation contribute to deregulation of the inflammatory response of the host in sepsis, the main objective of this study is to compare platelet activation markers levels of patients with septic shock and after major surgery. Plasma concentration in CD154, beta thromboglobulin, platelet factor 4, platelet microparticles, soluble CD62, RANTES, GRO-alpha, HMGB-1, monocyte Dnases signal, circulating free DNA and DNase1 and DNase1L3 activities will be studied and compared at inclusion (Day 0), Day 1 and Day 5.

Study Design

Conditions

Septic Shock

Intervention

Septic shock, Systemic Inflammatory Response Syndrome

Location

Hôpital Saint Louis
Paris
France
75010

Status

Not yet recruiting

Source

University Hospital, Bordeaux

Results (where available)

View Results

Links

Published on BioPortfolio: 2019-09-12T02:34:41-0400

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Medical and Biotech [MESH] Definitions

Systemic inflammatory response syndrome with a proven or suspected infectious etiology. When sepsis is associated with organ dysfunction distant from the site of infection, it is called severe sepsis. When sepsis is accompanied by HYPOTENSION despite adequate fluid infusion, it is called SEPTIC SHOCK.

Condition of low SYSTEMIC VASCULAR RESISTANCE that develops secondary to other conditions such as ANAPHYLAXIS; SEPSIS; SURGICAL SHOCK; and SEPTIC SHOCK. Vasoplegia that develops during or post surgery (e.g., CARDIOPULMONARY BYPASS) is called postoperative vasoplegic syndrome or vasoplegic syndrome.

An approximately 230 amino acid membrane glycoprotein characterized by an IMMUNOGLOBULIN V-SET DOMAIN in its N-terminal half. It is expressed by MONOCYTES and NEUTROPHILS in response to INFLAMMATION related to bacterial and fungal infections. It triggers the release of pro-inflammatory CHEMOKINES; CYTOKINES, and expression of cell activation markers and is a critical regulator of SEPTIC SHOCK.

Sepsis associated with HYPOTENSION or hypoperfusion despite adequate fluid resuscitation. Perfusion abnormalities may include, but are not limited to LACTIC ACIDOSIS; OLIGURIA; or acute alteration in mental status.

Increase in blood LACTATE concentration often associated with SEPTIC SHOCK; LUNG INJURY; SEPSIS; and DRUG TOXICITY. When hyperlactatemia is associated with low body pH (acidosis) it is LACTIC ACIDOSIS.

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