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© Pierre Gounon
Culture de cellules infectées par le virus Ebola, virus isolé sur un malade de Côte d'Ivoire par Leguenno en 1995. Virus de la famille des Filoviridae genre Filovirus. Réservoir naturel et mode de transmission inconnus. Infections secondaires par contact direct avec sang contaminé ou sécrétions corporelles. Mortalité dans 50 à 90% des cas. Soudan, République Démocratique du Congo, Côte d'Ivoire (Grossissement X 40000).
Publication : JCI insight

Clinical, virological, and biological parameters associated with outcomes of Ebola virus infection in Macenta, Guinea

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in JCI insight - 23 Mar 2017

Vernet MA, Reynard S, Fizet A, Schaeffer J, Pannetier D, Guedj J, Rives M, Georges N, Garcia-Bonnet N, Sylla AI, Grovogui P, Kerherve JY, Savio C, Savio-Coste S, de Séverac ML, Zloczewski P, Linares S, Harouna S, Abdoul BM, Petitjean F, Samake N, Shepherd S, Kinda M, Koundouno FR, Joxe L, Mateo M, Lecine P, Page A, Tchamdja TM, Schoenhals M, Barbe S, Simon B, Tran-Minh T, Longuet C, L'Hériteau F, Baize S

Link to Pubmed [PMID] – 28352651

JCI Insight 2017 03;2(6):e88864

The pathogenesis of Ebola virus (EBOV) disease (EVD) is poorly characterized. The establishment of well-equipped diagnostic laboratories close to Ebola treatment centers (ETCs) has made it possible to obtain relevant virological and biological data during the course of EVD and to assess their association with the clinical course and different outcomes of the disease. We were responsible for diagnosing EBOV infection in patients admitted to two ETCs in forested areas of Guinea. The pattern of clinical signs was recorded, and an etiological diagnosis was established by RT-PCR for EBOV infection or a rapid test for malaria and typhoid fever. Biochemical analyses were also performed. We handled samples from 168 patients between November 29, 2014, and January 31, 2015; 97 patients were found to be infected with EBOV, with coinfection in 18%. Overall mortality for EVD cases was 58%, rising to 86% if . was also present. Viral load was higher in fatal cases of EVD than in survivors, and fatal cases were associated with higher aspartate aminotransferase (AST) and alanine aminotransferase (ALT), C-reactive protein (CRP), and IL-6 levels. Furthermore, regardless of outcome, EVD was characterized by higher creatine kinase (CPK), amylase, and creatinine levels than in febrile patients without EVD, with higher blood urea nitrogen (BUN) levels in fatal cases of EVD only. These findings suggest that a high viral load at admission is a marker of poor EVD prognosis. In addition, high AST, ALT, CRP, and IL-6 levels are associated with a fatal outcome of EVD. Damage to the liver and other tissues, with massive rhabdomyolysis and, probably, acute pancreatitis, is associated with EVD and correlated with disease severity. Finally, biochemical analyses provide substantial added value at ETCs, making it possible to improve supportive rehydration and symptomatic care for patients. The French Ministry of Foreign Affairs, the Agence Française de Développement, and Institut Pasteur.

https://www.ncbi.nlm.nih.gov/pubmed/28352651