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| Articles
by
Noraziah Mohamad Zin |
Total Records (
1 ) for
Noraziah Mohamad Zin |
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Suhaila Haron
,
Rahizan Issa
,
Nik Marzuki Sidik
and
Noraziah Mohamad Zin
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The present study was designed to demonstrate the molecular
diagnosis usefulness for direct detection of M. tuberculosis
from clinical samples. A method of Duplex Polymerase Chain Reaction (DPCR)
and Real-time PCR (RTPCR) with primer specific for detection of the IS6110
insertion element of M. tuberculosis complex and the p53
gene of Human Beta Globin (Hbb) were developed. Fifty-four samples
consisted of 25 from pulmonary and 29 from non-pulmonary specimens of
patients suspected with M. tuberculosis infection. In a comparison
experiment, 37 and 34 samples were detected as positive by ordinary and
duplex PCR (DPCR), respectively, wherein data variation was detected in
samples of pleural and other body fluids. For pulmonary specimens, 12/25
(46%) and 5/25 (19%) were positive as detected by DPCR and RTPCR, respectively.
On the other hand, the number of positive results, 22/29 (71%) and 8/29
(21%) was higher among non-pulmonary specimens as detected by DPCR and
RTPCR, respectively. Of these number, DPCR and RTPCR identified 15/34
(44%) and 8/34 (24%) of specimens, respectively in which Acid Fast Bacilli
(AFB) and culture were negative. In addition, 18/19 (95%) and 4/19 (21%)
of the AFB positive specimens can be detected by DPCR and RTPCR, respectively.
Nevertheless, both PCR amplification methods were able to amplify the
IS6110 genes for culture positive specimen. Therefore, duplex PCR method
can be a useful additional technique for the diagnosis of M. tuberculosis
suspected infection. However, RTPCR assay still need to be established. |
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