In situ type 1 cytokine gene expression and mechanism associated with early leprosy progression
s.l; s.n; 2003. 8 p. ilus.
Non-conventional
in English
| Sec. Est. Saúde SP, HANSEN, Hanseníase Leprosy, SESSP-ILSLACERVO, Sec. Est. Saúde SP
| ID: biblio-1241409
Responsible library:
BR191.1
Localization: [{"text": "BR191.1", "_a": "01884/s"}]
ABSTRACT
We explored the prognostic value of in situ cytokine patterns in 39 patients with single-skin-lesion paucibacillary leprosy before single-dose therapy, with 3 years of follow-up. Interferon (IFN)-gamma, interleukin (IL)-12, IL-10, IL-4, tumor necrosis factor (TNF)-alpha, and macrophage inflammatory protein (MIP)-1alpha mRNA was quantified in skin biopsy samples at diagnosis, and Mycobacterium leprae DNA was detected in 51.4% of cases. Type 1 immunity predominance with measurable IFN-gamma and undetectable IL-4, which is indicative of effective cell-mediated immunity, is compatible with both the reversal reactions (33.3%) and the resolution of lesions (64.1%) observed. A positive correlation between IL-12 and IFN-gamma indicated type 1 polarization via IL-12. The TNF-alpha/MIP-1alpha correlation implied the TNF-alpha induction of chemokines, which is important for granuloma formation. Positive correlations between key regulatory cytokines-IL-10 and IFN-gamma, IL-10 and IL-12, and IL-10 and TNF-alpha-suggests that there may be some level of an intralesional pro- or anti-inflammatory mechanism essential in avoiding immunopathology.
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Collection:
National databases
/
Brazil
Health context:
Neglected Diseases
Health problem:
Leprosy
/
Neglected Diseases
Database:
HANSEN
/
Hanseníase Leprosy
/
Sec. Est. Saúde SP
/
SESSP-ILSLACERVO
Main subject:
Prognosis
/
Rifampin
/
Biopsy
/
RNA, Messenger
/
RNA, Viral
/
Ofloxacin
/
Gene Expression Regulation, Bacterial
/
Cohort Studies
/
Cytokines
/
Reverse Transcriptase Polymerase Chain Reaction
Type of study:
Etiology study
/
Incidence study
/
Observational study
/
Prognostic study
/
Risk factors
Limits:
Adolescent
/
Adult
/
Child
/
Female
/
Humans
/
Male
Language:
English
Year:
2003
Document type:
Non-conventional