title: P 53 suppressor gene and cathepsin D expression in correlation with cellular and humoral immunity in cutaneous leishmaniasis.
abstract: A total of fifteen clinically and parasitologically proven adult cases of cutaneous leishmaniasis were studied for the demonstration of premalignant factor(s). The levels of antibodies against Leishmania parasite were measured with the indirect haemagglutination test (IHAT) and evaluated with the results of lymphoblast transformation test (LTT), a tumour suppressor gene (P53) and an asportic proteinase enzyme (Cathepsin D). Three patients (females) refused to be biopsied. The results showed a direct correlation between elevation of IHAT in 7/12 patients (Titers 1/128 to 1/512) and elevation of LTT in 7/12 patients (82 to 90%). On the other hand, two males with low (?) seropositive IHAT (1/64) and low LTT (20 & 40%) gave positive P53 antibody and moderate (1) and marked (1) degrees Cathepsin D. So, it is concluded that cutaneous leishmaniasis infection particularly chronic one favours the premalignant changes in the granulomatous lesions.
authors.affiliation: Department of Parasitology, Faculty of Medicine, Zagazig University, Egypt.
authors.forename: M A
authors.initials: MA
authors.lastname: Selim
authors.forename: S M
authors.initials: SM
authors.lastname: Nada
authors.forename: B E
authors.initials: BE
authors.lastname: Abaza
authors.forename: A G
authors.initials: AG
authors.lastname: Selim
authors.forename: A M
authors.initials: AM
authors.lastname: Mangoud
authors.forename: M E
authors.initials: ME
authors.lastname: Ramadan
authors.forename: T A
authors.initials: TA
authors.lastname: Morsy
mesh_terms: D000818:Animals; D000913:Antibodies, Protozoan / Q000096:biosynthesis; D002402:Cathepsin D / Q000096:biosynthesis* / Q000235:genetics; D005260:Female; D015971:Gene Expression Regulation, Enzymologic; D016158:Genes, p53; D006801:Humans; D007111:Immunity, Cellular; D007891:Leishmania / Q000276:immunology; D016773:Leishmaniasis, Cutaneous / Q000201:enzymology / Q000235:genetics / Q000276:immunology*; D008297:Male
chemical_list: D000913:Antibodies, Protozoan; D002402:Cathepsin D