Evidence map›Paper›PMID 28545436›Full record

ArticleBMC complementary and alternative medicine2017

Thymoquinone (TQ) inhibits the replication of intracellular Mycobacterium tuberculosis in macrophages and modulates nitric oxide production.

Hafij Al Mahmud, Hoonhee Seo, Sukyung Kim, Md Imtiazul Islam, Kung-Woo Nam, Hyun-Deuk Cho, Ho-Yeon Song

Open access · goldAbstract read
In one paragraph

Article in BMC complementary and alternative medicine, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 2 pooled it
5.9field-weighted citation impact, top 5% 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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed, 2 syntheses or guidelines pooled it, 41 citations in OpenAlex.

  1. Medicinal Plants in the Treatment of Tuberculosis: A Systematic Review.Central nervous system agents in medicinal chemistry · 2025
    Pooled it
  2. Pooled it
  3. Review
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  8. Review
  9. Review
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  12. Biodegradation and Removal of PAHs byJournal of microbiology and biotechnology · 2021
    Article
  13. Review
  14. Dysregulated circRNAs in plasma from active tuberculosis patients.Journal of cellular and molecular medicine · 2018
    Article
  15. Comparative Immunomodulatory Activity ofFrontiers in pharmacology · 2018
    Article
  16. Article
  17. Review
  18. Avicenna journal of phytomedicine
    Article
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

7 authors at 1 institution in 1 country.

Hafij Al MahmudDepartment of Microbiology and Immunology, School of Medicine, Soonchunhyang University, Cheonan, Chungnam, 31151, Korea.
Hoonhee SeoDepartment of Microbiology and Immunology, School of Medicine, Soonchunhyang University, Cheonan, Chungnam, 31151, Korea.
Sukyung KimDepartment of Microbiology and Immunology, School of Medicine, Soonchunhyang University, Cheonan, Chungnam, 31151, Korea.
Md Imtiazul IslamDepartment of Microbiology and Immunology, School of Medicine, Soonchunhyang University, Cheonan, Chungnam, 31151, Korea.
Kung-Woo NamDepartment of Life Science and Biotechnology, School of Life Sciences, Soonchunhyang University, Asan, Chungnam, 31538, Korea.
Hyun-Deuk ChoDepartments of Pathology, Soonchunhyang University Cheonan Hospital, Soonchunhyang University College of Medicine, Cheonan, Korea.
Ho-Yeon SongDepartment of Microbiology and Immunology, School of Medicine, Soonchunhyang University, Cheonan, Chungnam, 31151, Korea. songmic@sch.ac.kr.
Soonchunhyang University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHuman tuberculosis, which is caused by the pathogen Mycobacterium tuberculosis, remains a major public health concern. Increasing drug resistance poses a threat of disease resurgence and continues to cause considerable mortality worldwide, which necessitates the development of new drugs with improved efficacy. Thymoquinone (TQ), an essential compound of Nigella sativa, was previously reported as an active anti-tuberculosis agent.

methodsIn this study, the effects of TQ on intracellular mycobacterial replication are examined in macrophages. In addition, its effect on mycobacteria-induced NO production and pro-inflammatory responses were investigated in Mycobacterium tuberculosis (MTB)-infected Type II human alveolar and human myeloid cell lines.

resultsTQ at concentrations ranging from 12.5 to 25 μg/mL and 6.25 to 12.5 μg/mL reduced intracellular M. tuberculosis H37Rv and extensively drug-resistant tuberculosis (XDR-TB) 72 h post-infection in RAW 264.7 cells. TQ treatment also produced a concentration-dependent reduction in nitric oxide production in both H37Rv and XDR-TB infected RAW 264.7 cells. Furthermore, TQ reduced the expression of inducible nitric oxide synthase (iNOS) and pro-inflammatory molecules such as tumor necrosis factor-alpha (TNF-α) and interlukin-6 (IL-6) in H37Rv-infected cells and eventually reduced pathogen-derived stress in host cells.

conclusionsTQ inhibits intracellular H37Rv and XDR-TB replication and MTB-induced production of NO and pro-inflammatory molecules. Therefore, along with its anti-inflammatory effects, TQ represents a prospective treatment option to combat Mycobacterium tuberculosis infection.

Indexed as

AnimalsAntitubercular AgentsBenzoquinonesCell LineHumansInterleukin-6MacrophagesMiceMycobacterium tuberculosisNigella sativaNitric OxidePlant ExtractsRAW 264.7 CellsTuberculosisTumor Necrosis Factor-alphaAntitubercular AgentsBenzoquinonesInterleukin-6Nitric OxidePlant ExtractsthymoquinoneTumor Necrosis Factor-alphaIntracellular killingMycobacterium tuberculosisNitric oxideThymoquinoneXdr-Tb

Identifiers

PMID28545436
PMCPMC5445392
OpenAlexW2617198196

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.