Evidence map›Paper›PMID 30134857›Full record

ArticleBMC medical genetics2018

Preliminary study showing no association between G238A (rs361525) tumor necrosis factor-α (TNF-α) gene polymorphism and its serum level, hormonal and biochemical aspects of polycystic ovary syndrome.

Fahimeh Kordestani, Sahar Mazloomi, Yousef Mortazavi, Saeideh Mazloomzadeh, Mojtaba Fathi, Haleh Rahmanpour, Abolfazl Nazarian

Open access · goldAbstract read
In one paragraph

Article in BMC medical genetics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.5field-weighted citation impact, top 17% 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

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3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 11 citations in OpenAlex.

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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

7 authors at 1 institution in 1 country.

Fahimeh KordestaniDepartment of Biochemistry, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran.
Sahar MazloomiDepartment of Biochemistry, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran.
Yousef MortazaviDepartment of Medical Biotechnology and Nanotechnology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran.
Saeideh MazloomzadehSocial Determinants of Health Research Center, Zanjan University of Medical Sciences, Zanjan, Iran.
Mojtaba FathiZanjan Metabolic Disease Research Center, Valiasr Hospital, Zanjan University of Medical Science, Zanjan, Iran. m_fathi@zums.ac.ir.ORCID 0000-0002-6844-4869
Haleh RahmanpourDepartment of Obstetrics and Gynecology, School of Medicine, Zanjan University of Medical Science, Zanjan, Iran.
Abolfazl NazarianDepartment of Biochemistry and Nutrition, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran.
Zanjan University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPolycystic ovary syndrome (PCOS) is the main cause of female infertility. Interactions among genetic, biochemical, and immunological factors can affect the pathogenesis of PCOS. As a proinflammatory cytokine, tumor necrosis factor-α (TNF-α) plays an important role in this regard. The present study aimed to evaluate the association of the rs361525 gene single-nucleotide polymorphism (SNP) and TNF-α serum levels with the hormonal and biochemical characteristics of PCOS in Iranian individuals.

methodsThe SNP rs361525 in the TNF-α gene was analyzed by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) in a total of 111 PCOS patients and 105 healthy females. Serum levels of TNF-α, lipid and hormone profiles, and biochemical factors were measured using enzyme-linked immunosorbent assay (ELISA) and calorimetric methods, as appropriate.

resultsThe TNF-α serum level was higher in women with PCOS compared with the control group (p <  0.0001), and it was significantly correlated with the homeostasis model assessment (HOMA) factor (r = 0.138, p <  0.05). No significant differences were found in the genotype and allelic frequencies between the two groups (p >  0.05). Higher levels and significant differences were found for the HOMA factor, luteinizing hormone/follicle-stimulating hormone (LH/FSH), testosterone, and body mass index (BMI) in the PCOS group compared with the control group (p <  0.0001). High LH/FSH ratios (odds ratio [OR] = 1.98, 95% confidence interval [CI] = 1.20-3.28, p <  0.01), and high HOMA factor (OR = 5.04, 95% CI = 2.82-9.01, p <  0.001) were significantly associated with an increased risk of PCOS.

conclusionsDespite the lack of significant difference between rs361525 polymorphism of the TNF-α gene and PCOS, the serum level of TNF-α was increased in PCOS patients and positively correlated with the HOMA factor. Elevation of the LH/FSH ratio and HOMA for insulin resistance (HOMA-IR) increased the risk of PCOS. Therefore, TNF-α could indirectly contribute to PCOS progression.

Indexed as

AdultBody Mass IndexCase-Control StudiesFemaleGene FrequencyGenetic Predisposition to DiseaseHormonesHumansInsulin ResistanceIranPolycystic Ovary SyndromePolymorphism, Restriction Fragment LengthPolymorphism, Single NucleotideTumor Necrosis Factor-alphaHormonesTumor Necrosis Factor-alphaHormone profilePolycystic ovary syndrome (PCOS)Polymerase chain reaction–restriction fragment length polymorphism (PCR-RFLP)PolymorphismTumor necrosis factor-alpha (TNF-α)

Identifiers

PMID30134857
PMCPMC6106732
OpenAlexW2888140726

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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.