Evidence map›Paper›PMID 28398760›Full record

ArticleAmerican journal of respiratory cell and molecular biology2017

Nicotine Impairs Macrophage Control of Mycobacterium tuberculosis.

Xiyuan Bai, Jerry A Stitzel, An Bai, Cristian A Zambrano, Matthew Phillips, Philippa Marrack, Edward D Chan

Open access · greenAbstract read
In one paragraph

Article in American journal of respiratory cell and molecular biology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
2.1field-weighted citation impact, top 14% 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

26 citing papers in PubMed, 53 citations in OpenAlex.

  1. The triple-hit hypothesis: exploring pulmonary e-cigarette, PMEuropean respiratory review : an official journal of the European Respiratory Society · 2026
    Review
  2. Article
  3. Review
  4. Nicotinic regulation of microglia: potential contributions to addiction.Journal of neural transmission (Vienna, Austria : 1996) · 2024
    Review
  5. Review
  6. Review
  7. Frontiers in cellular and infection microbiology · 2023
    Article
  8. Effect of Nicotine on Immune System Function.Advanced pharmaceutical bulletin · 2023
    Review
  9. Article
  10. Article
  11. Article
  12. Review
  13. Review
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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 4 institutions in 3 countries.

Xiyuan Bai1 Department of Medicine, Denver Veterans Affairs Medical Center, Denver, Colorado.
Jerry A Stitzel5 Department of Integrative Physiology, Institute for Behavioral Genetics, University of Colorado Boulder, Boulder, Colorado.
An Bai1 Department of Medicine, Denver Veterans Affairs Medical Center, Denver, Colorado.
Cristian A Zambrano5 Department of Integrative Physiology, Institute for Behavioral Genetics, University of Colorado Boulder, Boulder, Colorado.
Matthew Phillips6 Immunology, and.
Philippa Marrack6 Immunology, and.
Edward D Chan1 Department of Medicine, Denver Veterans Affairs Medical Center, Denver, Colorado.
Denver VA Medical Center · USUniversity of Colorado Boulder · USBipar · FRHoward Hughes Medical Institute · US

Funding

CHARACTERISTICS OF T CELL RECEPTORSR01AI018785 · NIAID · NATIONAL JEWISH HEALTH · PI MARRACK, PHILIPPA C. · 1985 to 2022
$7.3M
The role of T regulatory cells in cigarette smoke-induced susceptibility to tuberculosisR21AI121605 · NIAID · DENVER RESEARCH INSTITUTE · PI CHAN, EDWARD D · 2016 to 2017
$348k
How Does Nicotine Impair Macrophage Killing of Mycobacterium Tuberculosis? I01CX001452 · VA · VA EASTERN COLORADO HEALTH CARE SYSTEM · PI CHAN, EDWARD D · 2018 to 2021
–
CSRD VA I01 CX001452NIAID NIH HHS R01 AI018785NIAID NIH HHS R21 AI121605
6 · The paper itself

Abstract

Pure nicotine impairs macrophage killing of Mycobacterium tuberculosis (MTB), but it is not known whether the nicotine component in cigarette smoke (CS) plays a role. Moreover, the mechanisms by which nicotine impairs macrophage immunity against MTB have not been explored. To neutralize the effects of nicotine in CS extract, we used a competitive inhibitor to the nicotinic acetylcholine receptor (nAChR)-mecamylamine-as well as macrophages derived from mice with genetic disruption of specific subunits of nAChR. We also determined whether nicotine impaired macrophage autophagy and whether nicotine-exposed T regulatory cells (Tregs) could subvert macrophage anti-MTB immunity. Mecamylamine reduced the CS extract increase in MTB burden by 43%. CS extract increase in MTB was also significantly attenuated in macrophages from mice with genetic disruption of either the α7, β2, or β4 subunit of nAChR. Nicotine inhibited autophagosome formation in MTB-infected THP-1 cells and primary murine alveolar macrophages, as well as increased the intracellular MTB burden. Nicotine increased migration of THP-1 cells, consistent with the increased number of macrophages found in the lungs of smokers. Nicotine induced Tregs to produce transforming growth factor-β. Naive mouse macrophages co-cultured with nicotine-exposed Tregs had significantly greater numbers of viable MTB recovered with increased IL-10 production and urea production, but no difference in secreted nitric oxide as compared with macrophages cocultured with unexposed Tregs. We conclude that nicotine in CS plays an important role in subverting macrophage control of MTB infection.

Indexed as

AutophagosomesAutophagyCell LineCell MovementHumansMacrophages, AlveolarMycobacterium tuberculosisNF-kappa BNicotineNicotinic AntagonistsProtein SubunitsReceptors, NicotinicSmokingT-Lymphocytes, RegulatoryNF-kappa BNicotineNicotinic AntagonistsProtein SubunitsReceptors, Nicotiniccigarette smokehost immunitymacrophagenicotinetuberculosis

Identifiers

PMID28398760
PMCPMC5625222
OpenAlexW2605565815

What OpenQuestion holds

Textmetadata
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.