Immuno-histopathology in the diagnosis of early leprosy
Int. j. lepr. other mycobact. dis
; 68(4): 426-433, Dec., 2000. ilus, tab
Article
in English
| Sec. Est. Saúde SP, HANSEN, Hanseníase Leprosy, SESSP-ILSLACERVO, Sec. Est. Saúde SP
| ID: biblio-1226980
Responsible library:
BR191.1
Localization: [{"text": "BR191.1"}]
ABSTRACT
The present study of 45 early leprosy cases in an endemic area in China indicates a) Sensitivity of acid-fast bacilli (AFB) detection can be significantly improved by examining approximately 30 serial sections. AFB and/or phenolic glycolipid-I (PGL-I) were mostly detected in the infiltrates in the subepidermal zone, intraneurium, perineurium and around blood vessels. b) PGL-I antigen was positive in 10 clinically suspected, single lesion leprosy cases and AFB positive in 7 patients, AFB and/or PGL-I in nerve in 6 patients. c) Nonspecific chronic inflammation in indeterminate leprosy presented as selective perineural and/or intraneural infiltration with lymphocytes predominating. In the infiltrating mass, fragments of neural tissue were demonstrated with anti-S-100 protein staining. d) Except for 3 cases with unknown numbers of lesions, the present positive immunohistopathological findings are in direct correlation with the number of lesions at first diagnosis, namely 41.6% (10/24) for single lesion, 66.6% (6/9) for 2 lesions, and 88.8% (8/9) for patients with > or = 3 lesions. e) Typical epithelioid or macrophage granuloma formations were not seen in early leprosy with a single lesion. In testing the immunological inclination of these patients with CD68 or tumor necrosis factor-alpha (TNF-alpha) a positive test is likely to be of prognostic value since TNF-alpha is involved in granuloma formation and nerve damage.
Full text:
Available
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:
Leprosy
Type of study:
Diagnostic study
/
Evaluation study
/
Prognostic study
Language:
English
Journal:
Int. j. lepr. other mycobact. dis
Year:
2000
Document type:
Article
Institution/Affiliation country:
Beijing Friendship Hospital/CN
/
Beijing Tropical Medicine Research Institute/CN
/
Wenshan Prefectural/CN