Impact of Metabolite Supplementation to Restore Mitochondrial Dysfunction During Septic Shock: a Preclinical Study

In this prospective study, the investigators will include patients admitted to the medical ICU of Angers University Hospital and meeting the SEPSIS-3 criteria for the definition of septic shock (Sequential Organ Failure Assessment (SOFA) score > 2, hyperlactatemia > 2 mmol/L and sepsis).

Blood samples will be collected during the usual care of initial resuscitation and analyzed in the laboratory INSERM (Institut national de la santé et de la recherche médicale) U1232 (University Hospital of Angers).

Mitochondrial metabolism will be analyzed in freshly isolated PBMC and after culture for 1-3 days, with or without the addition of selected metabolites to the cell culture medium.

The evolution of ketogenesis, mitochondrial function, acidobasic status will be assessed across the time (blood samples at day 2 and 4).

Survival, renal and liver metabolism, severity scores and outcomes and the need for supportive care in the intensive care unit (ICU) until 28 days after admission will be recorded.

Inclusion criteria

• All patients aged 18 or more
• Patients with criteria for septic shock according to SEPSIS 3 definition (presumed sepsis, with persisting hypotension requiring vasopressors to maintain mean arterial pressure > 65 mmHg and having a serum lactate > 2 mmol/L despite adequate fluid expansion).
• Admitted in the ICU of Angers University Hospital

Exclusion criteria

• Minor patients (aged less 18)
• Patient subject to legal protection measures
• Refusal of the patient or his family
• Preexisting mitochondrial disease
• Patient with aplasia
• Pregnant or parturient women