Interest of the Balance of Pro-coagulating and Profibrinolytis Activities of the Microparticles (MP) in the Prognosis of Septic Shock

NCT02062970 | Unknown

• 2 other identifiers: 2013-A01251-442013-36
• Study Type: interventional
• Target: 230
• Locations: 1 country
• Sites: 1

Brief Summary

Septic shock is a clinical syndrome occurring in 10 to 20% of patients admitted in ICV. Mortality associated to septic shock varies from 30 to 50%. It follows a systemic response of the organism to a severe infection, associated with a circulatory failure marker by an arterial hypotension and a vascular hyperactivity to vasoconstrictor agents. The mechanisms involved on one hand an activation of white blood cells inflammatory system and the vascular inflammatory system; and on the other hand on imbalance in hemostatis characterized by an activation of the coagulation and an inappropriate fibrinolysis leading to a disruption of microcirculation in the context of a disseminated intravascular coagulation (DIVC). This inflammatory and thrombotic cellular activation is strongly associated with the phenomenon of vesiculation; leading to the production of cellular microparticles (MP) by blood cells and vascular cells. MP are membranous vesicles, resulting in the reassortment of membrane phospholides in response to an activation of cellular apoptosis. They have been initially described as new actors of hemostatis. Indeed, the expression of phospholipid serine and tissular factor (TF) confer them a procoagulating activity, which increases in patients undergoing septic shock. The finding of a fibriniolytic activity of the cellular MP suggests the existence of compensating mechanisms with a procoagulating activity. This confers to MP a key-role in the control of the coagulolytic balance. Our recent researches suggest that endothelial and white blood cells MP produce in vivo plasmin. They carry into the main circulation a fibrinolytic activity which is partially beyond the physiological inhibitors activity (PAI-1, x 2 antiplasmin). Preliminary findings show that this ability of plasmin generation is important in patients affected with septic shock. Our hypothesis is that an increase in plasmin generation by MP compensates the risk of occurrence of microthrombosis, modulating therefore the vital prognosis of patients with septic shock. The coagulolytic balance of MP, which is resulting of their own procoagulating and fibrinolytic activities could claim the status of new pronostic marker relevant in patients with septic shock.

Conditions

the Coagulolytic Balance; the Mortality Rate; the Performance Used to Evaluate the Principal Objective Are Technical Performances, Sensibility and Specificity of the Tests

Outcome Measures

Primary Outcomes (1)

• Evaluate the interest of the measure of the coagulolytic balance, dependant of the circulating MP in the prognostic of mortality in a population of subjects presenting a septic shock.

  The outcome of the study is to evaluate the interest of the measure of the coagulolytic balance, dependant of the circulating MP in the prognostic of mortality in a population of subjects presenting a septic shock. The objective is to evaluate the performance of this dosage while estimating the ROC-surve. In this present project: • the coagulolytic balance dependant of the MP is defined by the ratio between the activity of production of thrombin of circulating MP expressed by a speed in nM thrombin per minutes : and the activity of production of plasmin of circulating MP expressed by a speed in DD per minutes measured at inclusion of the subjects ; within 48 hours after diagnosis ;

  36 month

Study Arms (1)

septic shock patients suffering

EXPERIMENTAL

blood sample done in a population whom suffer of septic shock

Biological: blood draw

Interventions

blood draw BIOLOGICAL

septic shock patients suffering

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Patient with septic shock

You may not qualify if:

• age under 18 yo
• pregnant woman
• septic shock since more than 24 hours
• patient hospitalized for cardiac arrest
• immunocompromised patients
• patient in whom the stop of active therapeutic is discuss
• patient treated with an anti-coagulant at therapeutic dose

Sponsors & Collaborators

• Assistance Publique Hopitaux De Marseille: lead

Study Sites (1)

Assistance Publique des Hôpitaux de Marseille

Marseille, 13000, France

Location

Related Publications (1)

• Lacroix R, Judicone C, Souab KH, Bonifay A, Loundou A, Bouriche T, Cointe S, Vallier L, Abdili E, Arnaud L, Robert S, Poncelet P, Grosdidier C, Morange P, Cochery-Nouvellon E, Bouvier S, Gris JC, Lefrant JY, Leone M, Albanese J, Dignat-George F. The Procoagulant and Fibrinolytic Balance of Extracellular Vesicles Predicts Mortality in Septic Shock Patients. J Extracell Vesicles. 2025 Jun;14(6):e70073. doi: 10.1002/jev2.70073.

  PMID: 40560804 DERIVED

MeSH Terms

Interventions

Blood Specimen Collection

Intervention Hierarchy (Ancestors)

Specimen Handling; Clinical Laboratory Techniques; Diagnostic Techniques and Procedures; Diagnosis; Punctures; Surgical Procedures, Operative; Investigative Techniques

Study Officials

• Mondoloni Loic

  Assistance Publique des Hôpitaux de Marseille

  STUDY DIRECTOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Purpose: BASIC SCIENCE
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: November 28, 2013
• First Posted: February 14, 2014
• Study Start: February 1, 2014
• Primary Completion: January 1, 2018
• Study Completion: September 1, 2019
• Last Updated: May 30, 2019

Record last verified: 2019-05

Locations

FR (1)