We report the cloning and molecular analysis of the Leishmania donovani clpB gene. The protein-coding region is highly conserved compared with its L. major homologue, while 5'- and 3'-flanking DNA sequences display considerable divergence. The encoded mRNA has an unusually long 5'-leader sequence typical for RNAs, which are translated preferentially under heat stress. The gene product, a 100-kD...

Sirtuin proteins form a family of NAD+-dependent protein deacetylases that are considered potential drug targets against parasites. Here, we present the first characterization of a sirtuin orthologue from Leishmania amazonensis, an aetiological agent of American tegumentary leishmaniasis that has been the subject of many studies focused in the development of therapeutic approaches. The protein ...

this experimental study was conducted to assess of effectiveness of two nanogold concentrations against cutaneous leishmaniasis (cl) caused by iranian strain of leishmania major in balb/c mice model. cutaneous lesions were experimentally induced by inoculation with iranian leishmania major promastigotes (mrho/ir/75/er) in 61 balb/c mice. the infected mice were enrolled to four groups: intervent...

objective:cutaneous leishmaniasis is an endemic disease in some parts of iran.using pentavalent antimony compounds as first line treatment have been reported are associated with limitations and several adverse complications. so, attempt to find a new and effective compound has been under consideration.in the present study,the effect of achillea biebersteinii afanas that is a native plant in ira...

background: cutaneous leishmaniasis (cl) is endemic in many tropical and subtropical regions of the world. due to the prolonged duration of therapy, adverse effect and resistance to current drugs in the treatment of cl, the dis­covery of novel, efficient, and safe leishmanicidal drugs is required. the aims of the present study was to synthesis of new compounds based on the active compounds of 5...

Trypanosoma cruzi is the etiologic agent of Chagas disease, a neglected tropical disease that affects millions of people mainly in Latin America. To establish a life-long infection, T. cruzi must subvert the vertebrate host's immune system, using strategies that can be traced to the parasite's life cycle. Once inside the vertebrate host, metacyclic trypomastigotes rapidly invade a wide variety ...

In this study, direct visual evidence for local opsonization of L. donovani by macrophage (M phi)-derived complement components was obtained using immunoelectron microscopy. C3 deposition was detected on the surface of both promastigotes and amastigotes after 20 min serum-free incubation with murine resident peritoneal M phi (RPM), followed by fixation and incubation first with specific antibod...

Currently, there is a considerable controversy over the participation of Treg cells during Trypanosoma cruzi infection, the main point being whether these cells play a negative or a positive role. In this work, we found that the adoptive transfer of CD4(+)CD25(+)FOXP3(+) T cells from rSSP4- (a recombinant Trypanosoma cruzi amastigote derived protein, previously shown to have immunomodulatory pr...