Distribution of hsp65 PCR-restriction enzyme analysis patterns among Mycobacterium avium complex isolates in Thailand.
A total of 227 clinical Mycobacterium avium complex isolates from Thailand were differentiated into species and types by using PCR-restriction enzyme analysis of hsp65. The distribution of types showed the predominance of M. avium I (77%) in blood specimens, whereas M. intracellulare I was more commonly found in pulmonary specimens (44.2%). In addition, infections with M. avium were more likely to be found in younger adults (20 to 39 years old), while infections with M. intracellulare were more likely to be found in older adults (> or =60 years old). Our results provide the useful epidemiological information that some particular types have more invasive and virulent characters than others.
Prammananan
Therdsak
T
Department of Microbiology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand 10700.
Phunpruch
Saranya
S
Tingtoy
Nipa
N
Srimuang
Somboon
S
Chaiprasert
Angkana
A
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001426:Bacterial Proteins / Q000378:metabolism*; D018834:Chaperonin 60; D018833:Chaperonins / Q000378:metabolism*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015269:Mycobacterium avium Complex / Q000235:genetics*; D015270:Mycobacterium avium-intracellulare Infection / Q000453:epidemiology / Q000382:microbiology; D016133:Polymerase Chain Reaction / Q000379:methods*; D015183:Restriction Mapping / Q000379:methods*; D013785:Thailand / Q000453:epidemiology
D001426:Bacterial Proteins; D018834:Chaperonin 60; C074119:heat-shock protein 65, Mycobacterium; D018833:Chaperonins