title: The role of Fas system [Fas-FasL] as an inducer of apoptosis in cutaneous leishmaniasis: a combined human and experimental study.
abstract: Cutaneous leishmanial lesions as well as serum samples from both infected human and Swiss-albino mice were used to investigate the role of Fas system (Fas-FasL) as an inducer of apoptosis and other leishmanicidal cytokines in the disease development in cutaneous leishmaniasis. Soluble Fas was estimated by ELISA, other leishmanicidal cytokines were detected by PAP technique and tissue Fas by RT-PCR. Results showed a significant increase in interferon-gamma (IFN-gamma), tumour necrosis factor-alpha (TNF-alpha), nitric oxide (NO) and soluble Fas in both infected human and mice. As regards the tissue Fas, there was marked expression in human samples while in murine samples, the expression was reduced in chronic infected mice than in the late acute infected animals which can explain the progression of the lesion in the animals. This study confirms the role of Fas system as an inducer of apoptosis.
authors.affiliation: Department of Parasitology, Faculty of Medicine, Tanta University, Egypt.
authors.forename: S I
authors.initials: SI
authors.lastname: el-Kowrany
authors.forename: F A
authors.initials: FA
authors.lastname: Sallam
authors.forename: S O
authors.initials: SO
authors.lastname: Nassar
authors.forename: H I
authors.initials: HI
authors.lastname: Ismail
authors.forename: M M
authors.initials: MM
authors.lastname: Eissa
mesh_terms: D000818:Animals; D000965:Antimony / Q000627:therapeutic use; D017209:Apoptosis; D004797:Enzyme-Linked Immunosorbent Assay; D053222:Fas Ligand Protein; D005260:Female; D006801:Humans; D018320:Leishmania major; D016773:Leishmaniasis, Cutaneous / Q000188:drug therapy / Q000378:metabolism* / Q000473:pathology*; D008297:Male; D008562:Membrane Glycoproteins / Q000235:genetics / Q000378:metabolism*; D051379:Mice; D012333:RNA, Messenger / Q000032:analysis / Q000235:genetics; D012293:Rifampin / Q000627:therapeutic use; D012867:Skin / Q000378:metabolism / Q000473:pathology; D019014:fas Receptor / Q000235:genetics / Q000378:metabolism*
chemical_list: C505661:FASLG protein, human; D053222:Fas Ligand Protein; C505658:Fasl protein, mouse; D008562:Membrane Glycoproteins; D012333:RNA, Messenger; D019014:fas Receptor; C034426:sodium antimonate; D000965:Antimony; D012293:Rifampin