Evidence map›Paper›PMID 35355566›Full record

ArticleFrontiers in endocrinology2022

Elevated Serum Leptin Levels as a Predictive Marker for Polycystic Ovary Syndrome.

Yuanyuan Peng, Hongyue Yang, Jiahui Song, Di Feng, Zhijing Na, Hongyu Jiang, Yaxin Meng, Bei Shi, Da Li

Open access · goldAbstract read
In one paragraph

Article in Frontiers in endocrinology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
9.6field-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

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 54 citations in OpenAlex.

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  9. The combination of circulating levels of ANGPTL, omentin-1, leptin and cytokines is associated with polycystic ovary syndrome in different BMI groups.Revista brasileira de ginecologia e obstetricia : revista da Federacao Brasileira das Sociedades de Ginecologia e Obstetricia · 2025
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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

9 authors at 1 institution in 1 country.

Yuanyuan PengCenter of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China.
Hongyue YangCenter of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China.
Jiahui SongCenter of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China.
Di FengEducation Center, Clinical Skill Practice, China Medical University, Shenyang, China.
Zhijing NaCenter of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China.
Hongyu JiangCenter of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China.
Yaxin MengCenter of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China.
Bei ShiMedical Basic Experimental Teaching Center, China Medical University, Shenyang, China.
Da LiCenter of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China.
China Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Leptin may have important implications in polycystic ovary syndrome (PCOS)-related metabolic disorders. However, the changes in serum leptin levels in patients with PCOS and its predictive value for PCOS remain obscure. We intend to analyze the association between leptin and PCOS in this study. Materials and Methods: The study comprised 89 patients with PCOS and 139 individuals without PCOS. Each group was stratified as either normal- or hyper-fasting serum insulin (FSI), and lean or overweight/obese; and the patients were further categorized as normal- or hyper-androgenic. The validity of leptin toward the diagnosis of PCOS, or leptin combined with total testosterone, dehydroepiandrosterone sulfate (DHEAS), and free testosterone was estimated by receiver operating characteristic (ROC) curves, and correlations between paired variables was estimated by Spearman's rank correlation coefficient. Associations between the clinical and metabolic variables and PCOS were analyzed Results: The serum leptin levels of patients with PCOS were significantly higher than that of the control, and especially the PCOS in hyper-FSI, hyperandrogenimic and overweight/obese subgroups. The area under the ROC curve (AUC) of leptin was 74%, with cutoff value, sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) 11.58 ng/mL, 77.5%, 62.6%, 57.0%, and 81.3%, respectively. Combined leptin and anti-Müllerian hormone (AMH) had the highest AUC (92.3%), excellent sensitivity (93.3%), moderate specificity (78.3%), PPV (73.5%) and NPV (94.8%). Serum leptin levels of the patients were correlated with the FSI, fasting plasma glucose (FPG), homeostasis model assessment of insulin resistance (HOMA-IR), body mass index (BMI), and total testosterone levels. Elevated serum leptin was associated with a high risk of PCOS [ Conclusion: Substantially elevated serum leptin is significantly associated with PCOS. These findings warrant further investigations into the function of leptin in the pathogenesis of PCOS.

Indexed as

Polycystic Ovary SyndromeAnti-Mullerian HormoneBody Mass IndexFemaleHumansLeptinObesityAnti-Mullerian HormoneLEP protein, humanLeptinhyperandrogenisminsulin resistanceleptinmetabolic disordermonosaccharideobesitypolycystic ovary syndrome

Identifiers

PMID35355566
PMCPMC8959426
OpenAlexW4220984156

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.