Evidence map›Paper›PMID 27768900›Full record

SynthesisThe Brazilian journal of infectious diseases : an official publication of the Brazilian Society of Infectious Diseases

Is chronic toxoplasmosis a risk factor for diabetes mellitus? A systematic review and meta-analysis of case-control studies.

Hamidreza Majidiani, Sahar Dalvand, Ahmad Daryani, Ma de la Luz Galvan-Ramirez, Masoud Foroutan-Rad

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in The Brazilian journal of infectious diseases : an official publication of the Brazilian Society of Infectious Diseases. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 6 pooled it
–field-weighted citation impact
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

36 citing papers in PubMed, 6 syntheses or guidelines pooled it.

  1. Pooled it
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  3. Association betweenInternational journal of environmental research and public health · 2023
    Pooled it
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  7. Article
  8. Beyond Latency: ChronicBiomedicines · 2025
    Review
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  12. Heliyon · 2024
    Review
  13. Seroepidemiology ofJournal of research in medical sciences : the official journal of Isfahan University of Medical Sciences · 2024
    Article
  14. Effects ofFood and waterborne parasitology · 2023
    Article
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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

5 authors.

Hamidreza MajidianiTarbiat Modares University, Faculty of Medical Sciences, Department of Parasitology, Tehran, Iran.
Sahar DalvandKurdistan University of Medical Sciences, Social Determinants of Health Research Center, Sanandaj, Iran.
Ahmad DaryaniMazandaran University of Medical Sciences, Toxoplasmosis Research Center, Sari, Iran.
Ma de la Luz Galvan-RamirezUniversity of Guadalajara, Health Sciences University Center, Department of Physiology, Researcher of Neurophysiology Laboratory, Guadalajara, Mexico.
Masoud Foroutan-RadAhvaz Jundishapur University of Medical Sciences, Faculty of Medicine, Department of Medical Parasitology, Ahvaz, Iran. Electronic address: masoud_foroutan_rad@yahoo.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThe global protozoan parasite, Toxoplasma gondii, infects many warm-blooded animals and humans by employing different transmission routes. There have been some recent studies on the probable relevance of infectious agents and diabetes. Therefore, we conducted a systematic review and meta-analysis to identify the possible association between chronic toxoplasmosis and diabetes mellitus.

methodsThis study was conducted following the general methodology recommended for systematic reviews and meta-analysis. Nine English literature databases (Google scholar, PubMed, Scopus, Web of science, Science Direct, Ovid, ProQuest, IngentaConnect, and Wiley Online Library) were searched, up to January 2016. Random effects model was used to determine odds ratios and their 95% confidence intervals.

resultsOur review resulted in a total of seven publications meeting the inclusion criteria. Because of significant heterogeneity, we estimated a common OR by a random effects model at 1.10 (95% CI=0.13-9.57) with p=0.929 and 2.39 (95% CI=1.20-4.75) with p=0.013 for type 1 and type 2 diabetes mellitus, respectively.

conclusionDespite the limitations such as low number of studies, this meta-analysis suggests chronic toxoplasmosis as a possible risk factor for type 2 DM. However, based on random effects model no statistically significant association was observed between T. gondii and type 1 DM. It is highly recommended for researchers to carry out more accurate studies aiming to better understand this association.

Indexed as

Case-Control StudiesChronic DiseaseDiabetes MellitusHumansRisk FactorsToxoplasmosisDiabetes mellitusMeta-analysisSystematic reviewToxoplasma gondii

Identifiers

PMID27768900
PMCPMC9427549

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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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.