Evidence mapPaperPMID 24694334Full record

ArticleThe Journal of clinical endocrinology and metabolism2014

Associations between insulin resistance, free fatty acids, and oocyte quality in polycystic ovary syndrome during in vitro fertilization.

Zhihong Niu, Nan Lin, Ruihuan Gu, Yijuan Sun, Yun Feng

Registry-linked trialOpen access · bronzeAbstract read
In one paragraph

Article in The Journal of clinical endocrinology and metabolism, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04151459 (Effect of Laparoscopic Sleeve Gastrectomy), which is not on this map. Cited by 65 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
65citing papers in PubMed, 3 pooled it
7.6field-weighted citation impact, top 3% 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.

NCT04151459 naunknown statusstarted 2019, after this paper: background citation

Effect of Laparoscopic Sleeve Gastrectomy (LSG) on Live Birth Rate of Offspring in Polycystic Ovarian Syndrome (PCOS) Patients With Severely Obese

Ran2019Enrolled18Registered outcomes3Posted comparisons0ConditionsLaparoscopic Sleeve Gastrectomy, Polycystic Ovary Syndrome, Severe ObesityArmsMetformin
Open the trial in the graph
3 · Its place in the literature

Who cites it

65 citing papers in PubMed, 3 syntheses or guidelines pooled it, 124 citations in OpenAlex.

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5 more citing papers are in PubMed but not listed here.

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 at 1 institution in 1 country.

Zhihong NiuIVF Unit, Department of Obstetrics and Gynecology, Ruijin Hospital Affiliated to Shanghai Jiaotong University, Shanghai 200025, China.
Nan Lin
Ruihuan Gu
Yijuan Sun
Yun Feng
Ruijin Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

contextBoth polycystic ovary syndrome (PCOS) and obesity are associated with specific reproductive health complications, including lower oocyte quality and clinical pregnancy rates in assisted conception cycles, which may be a result of metabolism-induced changes in the oocyte through the microenvironment of follicular fluid. Free fatty acids (FFAs) are important biomedical indicators of abnormal lipid metabolism and have pronounced effects on cells, leading to changes in metabolism, cell growth, and differentiation.

objectiveOur objective was to determine the effect of FFA metabolism in plasma and follicular fluid on oocyte quality in the women with PCOS undergoing in vitro fertilization. DESIGN AND

settingNinety-three women undergoing in vitro fertilization treatment, including 55 with PCOS and 38 age-matched controls, were recruited. PCOS patients were divided into obese and nonobese subgroups on the basis of their body mass index.

main outcome measuresEmbryo quality was morphologically assessed, and serum sex hormone and insulin levels were measured. FFAs in plasma and follicular fluid were measured using gas chromatography-mass spectrometry.

resultsPCOS was found to be associated with significantly higher LH/FSH, total T, free androgen index (FAI), and lower SHBG levels, independent of obesity(P < .05). Obese women with PCOS had a significantly higher total T level, FAI, fasting insulin, insulin resistance index as determined by homeostasis model assessment for insulin resistance, and lower SHBG levels than the nonobese women with PCOS (P < .05). The embryo fragmentation score was significantly positively correlated with the oleic acid concentration in all PCOS patients (r = 0.22, P = .04, for nonobese patients and r = 0.25, P = .03, for obese patients).

conclusionsOur findings clearly demonstrated that PCOS is associated with significantly higher FAI and insulin resistance levels and decreased plasma SHBG levels, independent of body mass index. Obese PCOS patients had higher palmitoleic acid and oleic acid levels in both the plasma and follicular fluid than did the control subject and nonobese PCOS patients. Our results indicated that developmental competence is associated with oleic and stearic acid concentrations, which may contribute to the poor pregnancy outcomes in patients with PCOS.

Indexed as

Fertilization in VitroAdultCase-Control StudiesFatty Acids, NonesterifiedFemaleFollicular FluidHumansInfertilityInsulinInsulin ResistanceObesityOocytesPolycystic Ovary SyndromePregnancyPregnancy OutcomeFatty Acids, NonesterifiedInsulin

Identifiers

PMID24694334
PMCPMC4223443
OpenAlexW2170468099

What Socratic holds

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LicenceCC BY
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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 Socratic graph.