Résumé
Glioma is the most common and lethal intrinsic primary tumor of the brain. Its controversial origins may contribute to its heterogeneity, creating challenges and difficulties in the development of therapies. Among the components constituting tumors, glioma stem cells are highly plastic subpopulations that are thought to be the site of tumor initiation. Neural stem cells/progenitor cells and oligodendrocyte progenitor cells are possible lineage groups populating the bulk of the tumor, in which gene mutations related to cell-cycle or metabolic enzymes dramatically affect this transformation. Novel approaches have revealed the tumor-promoting properties of distinct tumor cell states, glial, neural, and immune cell populations in the tumor microenvironment. Communication between tumor cells and other normal cells manipulate tumor progression and influence sensitivity to therapy. Here, we discuss the heterogeneity and relevant functions of tumor cell state, microglia, monocyte-derived macrophages, and neurons in glioma, highlighting their bilateral effects on tumors. Finally, we describe potential therapeutic approaches and targets beyond standard treatments.
Sujets)
Humains , Gliome/métabolisme , Névroglie/métabolisme , Carcinogenèse/anatomopathologie , Cellules souches neurales/métabolisme , Microglie/métabolisme , Tumeurs du cerveau/métabolisme , Microenvironnement tumoralRésumé
The purpose of this study is to. investigate the pathologic changes of stress cardiomyopathy in ex-perimental rats. The results revealed some changes including myocardial fibers band necrosis by HE stain, early myocardium ischaemic changes by HBFP stain, Ca++overload of myocardial cells by GBHA stain. These methods are important for diagnosis of stress cardiomyopathy and early myocardial ischaemia.