Evidence map›Paper›PMID 32660613›Full record

Trial reportReproductive biology and endocrinology : RB&E2020

Changes in peripheral mitochondrial DNA copy number in metformin-treated women with polycystic ovary syndrome: a longitudinal study.

Po-Kai Yang, Chia-Hong Chou, Chin-Hao Chang, Shee-Uan Chen, Hong-Nerng Ho, Mei-Jou Chen

Registry-linked trialFull text readClinical Trial
In one paragraph

Trial report in Reproductive biology and endocrinology : RB&E, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00172523 (Metabolic Disorders in Polycystic Ovarian Syndrome), which is not on this map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 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.

NCT00172523 unknown statusnot on this map

Metabolic Disorders in Polycystic Ovarian Syndrome

TypeobservationalSponsorNational Taiwan University HospitalRan2004 to 2005ConditionsPolycystic Ovary Syndrome
3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Review
  6. Observational
  7. Review
  8. Article
  9. Review
  10. Review
  11. Mitochondrial Dysfunction in Polycystic Ovary Syndrome.Reproductive sciences (Thousand Oaks, Calif.) · 2023
    Review
  12. Review
  13. Article
  14. 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

6 authors.

Po-Kai YangDepartment of Obstetrics and Gynecology, National Taiwan University Hospital, No. 8, Chung-Shan South Road, 100, Taipei, Taiwan.
Chia-Hong ChouDepartment of Obstetrics and Gynecology, National Taiwan University Hospital, No. 8, Chung-Shan South Road, 100, Taipei, Taiwan.
Chin-Hao ChangDepartment of Medical Research, National Taiwan University Hospital, Taipei, Taiwan.
Shee-Uan ChenDepartment of Obstetrics and Gynecology, National Taiwan University Hospital, No. 8, Chung-Shan South Road, 100, Taipei, Taiwan.
Hong-Nerng HoDepartment of Obstetrics and Gynecology, National Taiwan University Hospital, No. 8, Chung-Shan South Road, 100, Taipei, Taiwan.
Mei-Jou ChenDepartment of Obstetrics and Gynecology, National Taiwan University Hospital, No. 8, Chung-Shan South Road, 100, Taipei, Taiwan. mjchen04@ntu.edu.tw.ORCID http://orcid.org/0000-0002-2305-1105

Funding

Ministry of Science and Technology, Taiwan 105-2628-B002-043-MY4
6 · The paper itself

Abstract

backgroundPatients with polycystic ovarian syndrome (PCOS) are associated with known alterations in mitochondria DNA copy number (mtDNA-CN). The aim of this study is to study the change in mtDNA-CN in patients with PCOS who were treated with metformin.

methodsThis is a prospective cohort of patients with PCOS, who received metformin for one year. From 2009 to 2015, 88 women diagnosed with PCOS, based on the Rotterdam criteria, were enrolled. Serial measurements of mtDNA-CN, 8-hydroxydeoxyguanosine (8-OHdG), anthropometric, metabolic, endocrine, and inflammatory markers were obtained before and after 3, 6, and 12 months of treatment.

resultsA significant decrease in mtDNA-CN was seen over the course of one year. Other markers, including 8-OHdG, testosterone, free androgen index, blood pressure and liver enzymes, also decreased in the same interval. On regression analysis, there was a significant association between the change in mtDNA-CN and serum total testosterone, and no association between mtDNA-CN and metabolic factors.

conclusionsTreatment with metformin is associated with a time-dependent decrease in mtDNA-CN in patients with PCOS who are treated over the course of one year. This may signify a reduction in mitochondria dysfunction. The change in mtDNA-CN corresponds to a similar change in serum total testosterone, and suggests a possible relationship between mtDNA-CN and testosterone.

trial registrationClinicalTrials.gov , NCT00172523 . Registered September 15, 2005.

Indexed as

DNA Copy Number VariationsAdolescentAdultBody Mass IndexDNA, MitochondrialFemaleHumansHypoglycemic AgentsInsulin ResistanceLongitudinal StudiesMetforminPolycystic Ovary SyndromeYoung AdultDNA, MitochondrialHypoglycemic AgentsMetformin8-Hydroxy-2′-DeoxyguanosineDNA mitochondrialFemaleHumansMetforminPolycystic ovary syndromeTestosterone

Identifiers

PMID32660613
PMCPMC7359290

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Registered trials

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.