Evidence map›Paper›PMID 30045688›Full record

ArticleBMC infectious diseases2018

Elevated levels of matrix metalloproteinases reflect severity and extent of disease in tuberculosis-diabetes co-morbidity and are predominantly reversed following standard anti-tuberculosis or metformin treatment.

Nathella P Kumar, Kadar Moideen, Vijay Viswanathan, Basavaradhya S Shruthi, Shanmugam Sivakumar, Pradeep A Menon, Hardy Kornfeld, Subash Babu

Registry-linked trialOpen access · goldFull text read
In one paragraph

Article in BMC infectious diseases, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04930744 (A Prospective, Randomized Open-Label Phase II Study of the Safety and Tolerability of Metformin in Combination With Standard Antimicrobial Treatment of Pulmonary Tuberculosis in People Co-infected With HIV), which is not on this map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
3.2field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT04930744 phase2completednot on this mapstarted 2022, after this paper: background citation

A Prospective, Randomized Open-Label Phase II Study of the Safety and Tolerability of Metformin in Combination With Standard Antimicrobial Treatment of Pulmonary Tuberculosis in People Co-infected With HIV

TypeinterventionalSponsorUniversity of Massachusetts, WorcesterRan2022 to 2025Enrolled112ConditionsTuberculosis, Pulmonary Tuberculosis, HIV CoinfectionArmsIsoniazid, Rifampicin, Ethambutol, Pyrazinamide, Metformin hydrochoride
3 · Its place in the literature

Who cites it

28 citing papers in PubMed, 1 synthesis or guideline pooled it, 42 citations in OpenAlex.

  1. Pooled it
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  4. Molecular signaling in coinfection: howFrontiers in immunology · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 2 countries.

Nathella P KumarNational Institutes of Health-NIH-NIRT-ICER, National Institute for Research in Tuberculosis, International Center for Excellence in Research, # 1 Mayor Sathyamoothy Road, Chetpet, Chennai, India. pavankumarn@nirt.res.in.ORCID 0000-0002-4901-1507
Kadar MoideenNational Institutes of Health-NIH-NIRT-ICER, National Institute for Research in Tuberculosis, International Center for Excellence in Research, # 1 Mayor Sathyamoothy Road, Chetpet, Chennai, India.
Vijay ViswanathanProf. M. Viswanathan Diabetes Research Center, Chennai, India.
Basavaradhya S ShruthiProf. M. Viswanathan Diabetes Research Center, Chennai, India.
Shanmugam SivakumarNational Institute for Research in Tuberculosis, Chennai, India.
Pradeep A MenonNational Institute for Research in Tuberculosis, Chennai, India.
Hardy KornfeldUniversity of Massachusetts Medical School, Worcester, MA, USA.
Subash BabuNational Institutes of Health-NIH-NIRT-ICER, National Institute for Research in Tuberculosis, International Center for Excellence in Research, # 1 Mayor Sathyamoothy Road, Chetpet, Chennai, India.
National Institute of Research in Tuberculosis · INIndia Diabetes Research Foundation · INUniversity of Massachusetts Chan Medical School · US

Funding

India International Center for Excellence in ResearchZIAAI001065 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI NUTMAN, THOMAS · 2009 to 2025
$19.0M
This project has been funded in whole or in part with Federal funds from the Government of India's (GOI) Department of Biotechnology (DBT), the Indian Council of Medical Research (ICMR), the United States National Institutes of Health (NIH), National Insti grant USB1-31149-XX-13
6 · The paper itself

Abstract

backgroundMatrix metalloproteinases (MMPs) are considered to be key mediators of tuberculosis (TB) pathology but their role in tuberculosis - diabetes comorbidity (TB-DM) is not well understood.

methodsTo study the association of MMP levels with severity and extent of disease as well as bacterial burden in TB-DM, we examined the systemic levels of MMP-1, - 2, - 3, - 7, - 8, - 9, - 10, - 12 and - 13 in individuals with TB-DM and compared them to those with TB alone (TB) or healthy controls (HC).

resultsCirculating levels of MMP-1, - 2, - 3, - 7, - 10 and - 12 were significantly higher in TB-DM compared to both TB and HC and MMP -13 levels were higher in comparison to HC alone. To understand the effect of standard anti-tuberculosis therapy (ATT) on these MMP levels in TB-DM, we measured the levels of MMPs at the end of treatment (post-treatment). Our findings indicate that ATT is associated with a significant reduction in the levels of MMP-1, - 2, - 3, - 8 and - 13 post-treatment. Moreover, the levels of MMP-1, - 2, - 3, - 9 and - 12 were significantly higher in TB-DM individuals with cavitary disease and/or bilateral disease at baseline but not post-treatment. Similarly, the levels of MMP -1, - 2, - 3 and - 8 exhibited a significant positive relationship with bacterial burden and HbA1c levels at baseline but not post-treatment. Within the TB-DM group, those known to be diabetic before incident TB (KDM) exhibited significantly higher levels of MMP-1, - 2, - 10 and - 12 at baseline and of MMP-1 and -3 post-treatment compared to those newly diagnosed with DM (NDM). Finally, KDM individuals on metformin treatment exhibited significantly lower levels of MMP-1, - 2, - 3, - 7, - 9 and - 12 at baseline and of MMP-7 post-treatment.

conclusionsOur data demonstrate that systemic MMP levels reflect baseline disease severity and extent in TB-DM, differentiate KDM from NDM and are modulated by ATT and metformin therapy.

Indexed as

Diabetes ComplicationsDiabetes MellitusTuberculosisAntitubercular AgentsComorbidityHumansMatrix MetalloproteinasesMetforminAntitubercular AgentsMatrix MetalloproteinasesMetforminDiabetes mellitusMatrix metalloproteinasesMycobacterium tuberculosis

Identifiers

PMID30045688
PMCPMC6060542
OpenAlexW2884811198

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.