Evidence map›Paper›PMID 19135887›Full record

ArticleCell2009

The role of the granuloma in expansion and dissemination of early tuberculous infection.

J Muse Davis, Lalita Ramakrishnan

Open access · bronzeAbstract read
In one paragraph

Article in Cell, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 467 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
467citing papers in PubMed, 3 pooled it
31.8field-weighted citation impact, top 1% 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

467 citing papers in PubMed, 3 syntheses or guidelines pooled it, 911 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Pathogens (Basel, Switzerland) · 2026
    Article
  6. Review
  7. Review
  8. Article
  9. Article
  10. Article
  11. Inhalational therapy of pulmonary infectionActa pharmaceutica Sinica. B · 2026
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Red-eared slider turtleInfection and immunity · 2025
    Article
  20. Review

407 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

2 authors at 2 institutions in 1 country.

J Muse DavisImmunology and Molecular Pathogenesis Graduate Program, Emory University, Atlanta, GA 30322, USA.
Lalita Ramakrishnan
Emory University · USUniversity of Washington · US

Funding

GENETIC BASIS OF MYCOBACTERIAL INVASIONR01AI036396 · NIAID · UNIVERSITY OF WASHINGTON · PI RAMAKRISHNAN, LALITA · 1994 to 2014
$5.2M
Host Responses to Mycobacterium Infection in ZebrafishR01AI054503 · NIAID · UNIVERSITY OF WASHINGTON · PI LALITA RAMAKRISHNAN · 2003 to 2026
$4.4M
Host-Responses to Mycobacterium Infection in ZebrafishR37AI054503 · NIAID · UNIVERSITY OF WASHINGTON · PI RAMAKRISHNAN, LALITA · 2012 to 2021
$3.1M
NIAID NIH HHS R01 AI036396NIAID NIH HHS R01 AI054503NIAID NIH HHS R01 AI36396NIAID NIH HHS R01 AI54503NIAID NIH HHS R37 AI054503
6 · The paper itself

Abstract

Granulomas, organized aggregates of immune cells, form in response to persistent stimuli and are hallmarks of tuberculosis. Tuberculous granulomas have long been considered host-protective structures formed to contain infection. However, work in zebrafish infected with Mycobacterium marinum suggests that granulomas contribute to early bacterial growth. Here we use quantitative intravital microscopy to reveal distinct steps of granuloma formation and assess their consequence for infection. Intracellular mycobacteria use the ESX-1/RD1 virulence locus to induce recruitment of new macrophages to, and their rapid movement within, nascent granulomas. This motility enables multiple arriving macrophages to efficiently find and phagocytose infected macrophages undergoing apoptosis, leading to rapid, iterative expansion of infected macrophages and thereby bacterial numbers. The primary granuloma then seeds secondary granulomas via egress of infected macrophages. Our direct observations provide insight into how pathogenic mycobacteria exploit the granuloma during the innate immune phase for local expansion and systemic dissemination.

Indexed as

Host-Pathogen InteractionsAnimalsApoptosisChemotaxisGranulomaHumansMacrophagesMycobacterium InfectionsMycobacterium Infections, NontuberculousMycobacterium marinumMycobacterium tuberculosisPhagocytosisTuberculosisVirulence FactorsZebrafishVirulence Factors

Identifiers

PMID19135887
PMCPMC3134310
OpenAlexW2064964564

What OpenQuestion holds

Textmetadata
LicenceTDM
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.