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Contexte: Le malathion est l’un des pesticides organophosphatés largement utilisé dans les cultures et les cultures pour lutter contre les organismes nuisibles. Le malathion induit un stress oxydatif dans les différents tissus tels que le système reproducteur. Objectif: Déterminer les effets du malathion sur le taux de malondialdéhyde (MDA) et de glutathion (GSH) dans le tissu ovarien de rat femelle et évaluer le rôle protecteur de l'acide ascorbique. Méthodes: Cette étude a été réalisée en 2015 par le département d'anatomie et de biologie cellulaire (faculté de médecine de l'Université des sciences médicales de Mashhad, Mashhad, Iran). Dans cette étude expérimentale, 30 rats Wistar adultes, femelles (poids: 200 -250 g) ont été divisés en cinq groupes, chaque groupe étant composé de six rats: groupe témoin (aucune intervention), groupe témoin (solution saline normale à 0,9% 50 mg / kg), groupe expérimental 1 (acide ascorbique à 200 mg / kg), groupe 2 (malathion 50 mg / kg) et groupe expérimental 3 (malathion 50 mg / kg + acide ascorbique 200 mg / kg). Le malathion, les solvants et l'acide ascorbique ont été injectés par voie intraperitoneale. Après deux semaines, les animaux ont été anesthésiés avec un mélange kétamine / xylazine intrapéritonéale (60 et 6 mg / kg, respectivement), puis scarifiés, et l'ovaire droit a été utilisé pour mesurer les niveaux de MDA, marqueur de la peroxydation lipidique, et de la teneur en GSH. Les données ont été analysées par SPSS version 16 à l'aide de statistiques descriptives, d'ANOVA One Way et de test de Tukey-Kramer. Une valeur p <0,05 a été définie comme niveau de signification. Résultats: Cette étude a montré que le malathion augmentait le taux de MDA et réduisait la teneur en GSH par rapport au groupe témoin (p <0,001). En outre, l'administration de malathion en association avec de l'acide ascorbique a réduit le taux de MDA et augmenté la teneur en GSH dans le tissu ovarien du rat. Conclusion: La peroxydation lipidique et le stress oxydatif induits par le malathion chez l'ovaire de rat. En outre, il semble que l'acide ascorbique, en raison de son pouvoir antioxydant, puisse récupérer les modifications toxiques induites par le malathion.
Source: https://www.ncbi.nlm.nih.gov/pubmed/29997763