Evidence map›Paper›PMID 40308791›Full record

ArticleActa medica Philippina2025

Identification of Nontuberculous Mycobacteria in Patients with Multidrug-resistant Tuberculosis in Quezon City, Philippines, Using Multiplex PCR.

Michelle M Cabanatan, Alice Alma C Bungay, Sharon Yvette Angelina M Villanueva, Marohren C Tobias-Altura, Dario D Defensor, Maria Margarita M Lota

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Article in Acta medica Philippina, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

6 authors.

Michelle M CabanatanDepartment of Medical Microbiology, College of Public Health, University of the Philippines Manila, Manila, Philippines.
Alice Alma C BungayDepartment of Medical Microbiology, College of Public Health, University of the Philippines Manila, Manila, Philippines.
Sharon Yvette Angelina M VillanuevaDepartment of Medical Microbiology, College of Public Health, University of the Philippines Manila, Manila, Philippines.
Marohren C Tobias-AlturaDepartment of Medical Microbiology, College of Public Health, University of the Philippines Manila, Manila, Philippines.
Dario D DefensorDepartment of Pathology and Laboratory Medicine, Lung Center of the Philippines, Quezon City, Philippines.
Maria Margarita M LotaDepartment of Medical Microbiology, College of Public Health, University of the Philippines Manila, Manila, Philippines.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background and Objective: Nontuberculous mycobacteria (NTM) lung disease appears like tuberculosis infection but is resistant to primary anti-tuberculosis drugs. Hence, patients whose sputum sample tests positive for acid-fast bacilli (AFB) and bacterial culture for several times should be assessed for colonization or infection with NTM in a damaged lung secondary to TB. In such cases, though drug-resistant TB may be adequately treated, treatment may need to be directed towards the NTM as well. In NTM therapy, the duration and choice of treatment agent is based upon the specific organism and disease extent. This study used one-step multiplex PCR (mPCR) assay for rapid differentiation of solid cultures in Ogawa medium as Methods: A total of 80 stocked isolates obtained from the Lung Center of the Philippines from January to December 2018 were screened for NTM in terms of growth in Ogawa medium, acid fastness, and MPT64 TB antigen test result. These were from sputum specimens of multidrug-resistant tuberculosis (MDR-TB) patients. DNA was extracted from cultures (n=55) grown in Ogawa medium and one-step mPCR was performed to identify NTM to the species level. Results: Out of 80 samples screened, a total of 55 isolates were identified as NTM. One-step mPCR identified 12.73% (7/55) as Conclusion: One-step mPCR was able to identify isolates as MTB or NTM coinciding with the initial screening using MPT64 TB antigen test. Multiplex PCR has given a more specific identification to the species level. The use of mPCR in identifying MTB and clinically significant NTM's is suitable for the adequate treatment of mycobacterial infection.

Indexed as

multidrug-resistant tuberculosismultiplex PCRmycobacteria

Identifiers

PMID40308791
PMCPMC12037329

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