Inhibition of muscle differentiation by trypanosoma cruzi.
نویسندگان
چکیده
L6E9 rat myoblasts were infected in tissue culture with the myotropic Brazil strain of Trypanosoma cruzi. The effect of parasite infection on the ability of myoblasts to differentiate into myotubes was studied. Both morphological and biochemical differentiation were found to be profoundly affected by parasitic infection in a dose-related fashion. Evidence is presented to suggest that infected myoblasts can no longer differentiate. Differentiation, once underway, seemed unaffected by the parasitic infection; biochemical markers of differentiation remained intact.
منابع مشابه
Trypanocidal activity of some endemic species of Satureja in Iran
Trypanosoma cruzi, a hemoflagellate protozoan (family Trypanosomatidae), is the ethiological agent of Chagas disease, which is affecting 16-18 million people, with more than 100 million exposed to the risk of infection. Higher plants are a potential source of new drugs to improve the treatment of Chagase disease. Until recently, Rutacea, Meliaceae, Simaroubaceae and Burceraceae families have be...
متن کاملTrypanosoma cruzi infection affects actin mRNA regulation in heart muscle cells.
We have previously described alterations in the cytoskeletal organization of heart muscle cells (HMC) infected with Trypanosoma cruzi in vitro. Our aim was to investigate whether these changes also affect the regulation of the actin mRNAs during HMC differentiation. Northern blot analysis revealed that alpha-cardiac actin mRNA levels increased during cell differentiation while beta-actin mRNA l...
متن کاملProtein Synthesis Attenuation by Phosphorylation of eIF2α Is Required for the Differentiation of Trypanosoma cruzi into Infective Forms
Chagas' disease is a potentially life-threatening illness caused by the unicellular protozoan parasite Trypanosoma cruzi. It is transmitted to humans by triatomine bugs where T. cruzi multiplies and differentiates in the digestive tract. The differentiation of proliferative and non-infective epimastigotes into infective metacyclic trypomastigotes (metacyclogenesis) can be correlated to nutrient...
متن کاملEffects of some fractions from Achillea biebersteinii and A.millefolium on the epimastigotes of Trypanosoma cruzi
Higher plants are a potential source of new drugs to improve the treatment of Chagase disease, which is affecting 16-18 million people, with more than 100 million exposed to the risk of infection (Ambrozin et al., 2004; Coura & Castro, 2002). Current therapy is unsatisfactory, because the only two drugs available, benznidazole and nifortimox possess severe side effects and their activity is lim...
متن کاملSpecific inhibition of the differentiation of Trypanosoma cruzi
The morphological transformation of Trypanosoma cruzi amastigotes was studied in both mammalian cells and an extracellular differentiation system. Inhibitors of ADP-ribosyl transferase were found to block differentiation in both cases, without affecting proliferation. The inhibitory effect was reversible and was not observed with chemical analogues that do not inhibit ADP-ribosyl transferase. A...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Proceedings of the National Academy of Sciences of the United States of America
دوره 80 20 شماره
صفحات -
تاریخ انتشار 1983