Polymerase chain reaction for detection of Mycobacterium tuberculosis in papanicolaou-stained fine needle aspirated smears for diagnosis of cervical tuberculous lymphadenitis.
Southeast Asian J Trop Med Public Health
;
2006 Sep; 37(5): 940-7
Article
Dans Anglais
| IMSEAR
| ID: sea-34001
ABSTRACT
A polymerase chain reaction (PCR) protocol for detecting IS6110 repetitive insertion sequence of Mycobacterium tuberculosis (MTB) was tested on archival Papanicolaou (Pap)-stained fine needle aspirated (FNA) smears from 24 patients with cervical tuberculous lymphadenopathy and 30 negative controls. The protocol involved protease digestion or phenolchloroform extraction, and simple or nested PCR, with PCR amplification of human beta-globin gene for internal control of DNA quality. Sensitivity of 50% and specificity of 100% were obtained. Sensitivity in smears showing necrosis without granuloma was 70% (7/10), whereas it was 36% (5/14) in smears with presence of granuloma. On the other hand, sensitivity of 18% (4/22) was obtained using FNA acid-fast stain, 25% (1/4) for acid-fast stain in histological section, 50% (2/4) for culture, and 100% (8/8) for PCR of fresh specimens. PCR for MTB detection in Papanicolaou-stained slides is a practical and valuable method when no fresh specimen but only Pap-stained smear is available.
Texte intégral:
Disponible
Indice:
IMSEAR (Asie du Sud-Est)
Sujet Principal:
Coloration et marquage
/
Thaïlande
/
Tuberculose ganglionnaire
/
Sujet âgé
/
Femelle
/
Humains
/
Mâle
/
Réaction de polymérisation en chaîne
/
Sensibilité et spécificité
/
Adolescent
Type d'étude:
Etude diagnostique
/
Guide de pratique
Pays comme sujet:
Asie
langue:
Anglais
Texte intégral:
Southeast Asian J Trop Med Public Health
Année:
2006
Type:
Article
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