Evidence map›Paper›PMID 36203937›Full record

ArticleFrontiers in physiology2022

Metformin modulates the gut microbiome in broiler breeder hens.

Emily Van Syoc, Evelyn Weaver, Connie J Rogers, Justin D Silverman, Ramesh Ramachandran, Erika Ganda

Open access · goldAbstract read
In one paragraph

Article in Frontiers in physiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.4field-weighted citation impact, top 41% 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

5 citing papers in PubMed, 6 citations in OpenAlex.

  1. PCR bias impacts microbiome ecological analyses.PLoS computational biology · 2026
    Article
  2. PCR Bias Impacts Microbiome Ecological Analyses.bioRxiv : the preprint server for biology · 2025
    Article
  3. Article
  4. Article
  5. Review
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

6 authors at 1 institution in 1 country.

Emily Van SyocIntegrative & Biomedical Physiology and Clinical & Translational Sciences Dual-Title PhD Program, The Pennsylvania State University, University Park, PA, United States.
Evelyn WeaverDepartment of Animal Science, The Pennsylvania State University, University Park, PA, United States.
Connie J RogersDepartment of Nutritional Sciences, The Pennsylvania State University, University Park, PA, United States.
Justin D SilvermanDepartment of Statistics, The Pennsylvania State University, University Park, PA, United States.
Ramesh RamachandranCenter for Reproductive Biology and Health, The Pennsylvania State University, University Park, PA, United States.
Erika GandaDepartment of Animal Science, The Pennsylvania State University, University Park, PA, United States.
Pennsylvania State University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Broiler breeder hens, the parent stock of commercial broiler chickens, are genetically selected for rapid growth. Due to a longer production period and the focus of genetic selection on superior carcass traits in their progeny, these hens have the propensity to gain excess adipose tissue and exhibit severe ovarian dysfunction, a phenotype that is similar to human polycystic ovary syndrome (PCOS). Metformin is an antihyperglycemic drug approved for type 2 diabetes that is prescribed off-label for PCOS with benefits on metabolic and reproductive health. An additional effect of metformin treatments in humans is modulation of gut microbiome composition, hypothesized to benefit glucose sensitivity and systemic inflammation. The effects of dietary metformin supplementation in broiler breeder hens have not been investigated, thus we hypothesized that dietary metformin supplementation would alter the gut microbiome of broiler breeder hens. Broiler breeder hens were supplemented with metformin at four different levels (0, 25, 50, and 75 mg/kg body weight) from 25 to 65 weeks of age, and a subset of hens (

Indexed as

broiler breeder hensgut microbiomemetforminpolycystic ovary syndrome (PCOS)poultry

Identifiers

PMID36203937
PMCPMC9531308
OpenAlexW4295591713

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.