Evidence map›Paper›PMID 33740002›Full record

SynthesisPloS one2021

Circulating resistin and follistatin levels in obese and non-obese women with polycystic ovary syndrome: A systematic review and meta-analysis.

Tahereh Raeisi, Hossein Rezaie, Mina Darand, Akram Taheri, Nazila Garousi, Bahman Razi, Leonardo Roever, Reza Mohseni, Shimels Hussien Mohammed, Shahab Alizadeh

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 6 pooled it
5.0field-weighted citation impact, top 4% 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

23 citing papers in PubMed, 6 syntheses or guidelines pooled it, 35 citations in OpenAlex.

  1. Efficacy of inositol supplementation for the prevention and treatment of gestational diabetes in pregnant women: Results from an umbrella meta-analysis.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2026
    Pooled it
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  7. Trial
  8. Review
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  13. Polycystic ovary syndrome as a metabolic disease.Nature reviews. Endocrinology · 2025
    Review
  14. Shared Pathophysiological Mechanisms and Genetic Factors in Early Menarche and Polycystic Ovary Syndrome.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Review
  15. Review
  16. Review
  17. Article
  18. Androgens Modulate the Immune Profile in a Mouse Model of Polycystic Ovary Syndrome.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024
    Article
  19. Polycystic ovary syndrome.Nature reviews. Disease primers · 2024
    Review
  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

10 authors at 6 institutions in 2 countries.

Tahereh RaeisiDepartment of Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
Hossein RezaieDepartment of Anatomy, School of Medicine Tehran University of Medical Sciences, Tehran, Iran.
Mina DarandDepartment of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Akram TaheriDepartment of Nutrition, Faculty of Medicine, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Nazila GarousiDepartment of Clinical Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran.
Bahman RaziDepartment of Hematology and Blood Banking, School of Allied Medical Sciences, Tehran University of Medical Sciences (TUMS), Tehran, Iran.
Leonardo RoeverDepartment of Clinical Research, Federal University of Uberlândia, Minas Gerais, Brazil.ORCID 0000-0002-7517-5548
Reza MohseniDepartment of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran.
Shimels Hussien MohammedDepartment of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences-International Campus (TUMS-IC), Tehran, Iran.
Shahab AlizadehDepartment of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran.ORCID 0000-0003-1661-4341
Tehran University of Medical Sciences · IRHormozgan University of Medical Sciences · IRIsfahan University of Medical Sciences · IRIslamic Azad University, Science and Research Branch · IRNational Nutrition and Food Technology Research Institute · IRUniversidade Federal de Uberlândia · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This meta-analysis was performed to resolve the inconsistencies regarding resistin and follistatin levels in women with polycystic ovary syndrome (PCOS) by pooling the available evidence. A systematic literature search using PubMed and Scopus was carried out through November 2020 to obtain all pertinent studies. Weighted mean differences (WMDs) with corresponding 95% confidence intervals (CIs) were calculated to evaluate the strength of the association between the levels of resistin and follistatin with PCOS in the overall and stratified analysis by obesity status. A total of 47 publications, 38 for resistin (2424 cases; 1906 controls) and 9 studies for follistatin (815 cases; 328 controls), were included in the meta-analysis. Resistin levels were significantly higher in PCOS women compared with non-PCOS controls (WMD = 1.96 ng/ml; 95%CI = 1.25-2.67, P≤0.001) as well as in obese PCOS women vs. obese controls, and in non-obese PCOS women compared with non-obese controls, but not in obese PCOS vs. non-obese PCOS patients,. A significantly increased circulating follistatin was found in PCOS patients compared with the controls (WMD = 0.44 ng/ml; 95%CI = 0.30-0.58, P≤0.001) and in non-obese PCOS women compared with non-obese controls and in obese PCOS women vs. obese controls, but, no significant difference in follistatin level was observed in obese PCOS compared with non-obese PCOS women. Significant heterogeneity and publication bias was evident for some analyses. Circulating levels of resistin and follistatin, independent of obesity status, are higher in women with PCOS compared with controls, showing that these adipokines may contribute to the pathology of PCOS.

Indexed as

FemaleFollistatinHumansObesityPolycystic Ovary SyndromeResistinFollistatinResistin

Identifiers

PMID33740002
PMCPMC7978365
OpenAlexW3137517676

What Socratic 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 Socratic graph.