PMID- 10712345 OWN - NLM STAT- MEDLINE DCOM- 20000425 LR - 20041117 IS - 1073-449X (Print) IS - 1073-449X (Linking) VI - 161 IP - 3 Pt 1 DP - 2000 Mar TI - Sensitive identification of mycobacterial species using PCR-RFLP on bronchial washings. PG - 930-4 AB - In 98 patients (24 with active pulmonary tuberculosis [TB] lesions, 28 with cured TB lesions, and 46 with nontuberculous opacities [control group] in chest CT scans), we examined whether washing the bronchus after brushing the lesion, then applying polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) to the bronchial washings might be useful for diagnosing TB and nontuberculous mycobacteriosis (NTMosis). After biopsy and brushing with a bronchoscope, the bronchus connecting to the lesion was washed with 20 ml saline. The saline used for washing the brushes (5 ml; brushing sample), and 3 to 10 ml saline aspirated through the forceps channel (washing sample) were examined by PCR-RFLP, which proved able to identify Mycobacterium tuberculosis and seven species of nontuberculous mycobacteria (NTM). The values obtained for the sensitivity of the PCR-RFLP with respect to the brushing sample, the washing sample, and both samples mixed together were 70, 76, and 91%, respectively, when only patients who were culture-positive or radiologically improved after antituberculous therapy were considered as showing true infection. A mixture of brushing and washing samples provides useful material for PCR and culture, and the PCR-RFLP used here is a good method for the simultaneous identification of several species of mycobacterium (including M. tuberculosis). FAU - Hidaka, E AU - Hidaka E AD - Departments of Laboratory Medicine and Internal Medicine, Shinshu University School of Medicine, Matsumoto, Japan. FAU - Honda, T AU - Honda T FAU - Ueno, I AU - Ueno I FAU - Yamasaki, Y AU - Yamasaki Y FAU - Kubo, K AU - Kubo K FAU - Katsuyama, T AU - Katsuyama T LA - eng PT - Journal Article PL - United States TA - Am J Respir Crit Care Med JT - American journal of respiratory and critical care medicine JID - 9421642 SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Bronchoalveolar Lavage Fluid/*microbiology MH - Diagnosis, Differential MH - Female MH - Humans MH - Male MH - Middle Aged MH - Mycobacterium avium Complex/genetics MH - Mycobacterium avium-intracellulare Infection/diagnosis/microbiology MH - Mycobacterium tuberculosis/genetics MH - *Polymerase Chain Reaction MH - *Polymorphism, Restriction Fragment Length MH - Predictive Value of Tests MH - Tuberculosis, Pulmonary/*diagnosis/microbiology EDAT- 2000/03/11 09:00 MHDA- 2000/04/29 09:00 CRDT- 2000/03/11 09:00 PHST- 2000/03/11 09:00 [pubmed] PHST- 2000/04/29 09:00 [medline] PHST- 2000/03/11 09:00 [entrez] AID - 10.1164/ajrccm.161.3.9904028 [doi] PST - ppublish SO - Am J Respir Crit Care Med. 2000 Mar;161(3 Pt 1):930-4. doi: 10.1164/ajrccm.161.3.9904028.