Évaluation du stress oxydatif chez les patients atteints de thrombocytémie essentielle sous traitement adapté au risque Introduction. La thrombocytémie essentielle (TE) est une maladie de la cellule-souche hématopoïétique caractérisée par une thrombocytose persistante dans le sang périphérique, une prolifération excessive des mégacaryocytes et une faible fibrose réticulinique dans la moelle osseuse. Il semble que le stress oxydatif soit impliqué dans le développement et la progression de la TE. L'objectif de l'étude est d'évaluer le niveau du stress oxydatif chez les patients atteints de TE sous traitement adapté au risque. Materiel et méthodes. 62 patients atteints de TE et 20 volontaires sains (consentement écrit obtenu) ont été inscrits. Le diagnostic a été fait second les critères OMS 2016 pour la TE (version révisée en 2016). Le
In the past decades, the involvement of reactive oxygen species (ROS) in health and disease has been intensely studied. Apart from their antimicrobial role in phagocytosis, ROS are also involved in a multitude of cellular processes, such as cell cycle progression, cellular motility or amplification of signaling factors. Many diseases are characterized by an overproduction of ROS or by deficient antioxidant systems, thus leading to oxidative stress (OxS) onset. The involvement of OxS in several types of solid cancers (prostate cancer, breast cancer, colorectal cancer and melanoma) and hematological malignancies (acute lymphoblastic leukemia, myelodysplastic syndromes, acute and chronic myeloid leukemia) has been proved. Recent studies have hypothesized that ROS derived from tumors can promote cell survival, migration, metastasis, proliferation and even drug-resistance according to the origin of the cancer. However, the involvement of OxS in carcinogenesis is far from being completely understood.
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