Evidence map›Paper›PMID 26520453›Full record

ArticleJournal of assisted reproduction and genetics2015

Single-nucleotide polymorphism rs 175080 in the MLH3 gene and its relation to male infertility.

Ourania Markandona, Konstantinos Dafopoulos, George Anifandis, Christina I Messini, Marina Dimitraki, Aspasia Tsezou, Panagiotis Georgoulias, Ioannis E Messinis

Open access · bronzeAbstract read
In one paragraph

Article in Journal of assisted reproduction and genetics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
1.0field-weighted citation impact, top 20% 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

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.

  1. Pooled it
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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

8 authors at 2 institutions in 2 countries.

Ourania MarkandonaDepartment of Obstetrics and Gynecology, University of Thessaly, School of Health Sciences, Faculty of Medicine, 41110 Viopolis, Larissa, Greece.
Konstantinos DafopoulosDepartment of Obstetrics and Gynecology, University of Thessaly, School of Health Sciences, Faculty of Medicine, 41110 Viopolis, Larissa, Greece.
George AnifandisDepartment of Obstetrics and Gynecology, University of Thessaly, School of Health Sciences, Faculty of Medicine, 41110 Viopolis, Larissa, Greece.
Christina I MessiniDepartment of Obstetrics and Gynecology, University of Thessaly, School of Health Sciences, Faculty of Medicine, 41110 Viopolis, Larissa, Greece.
Marina DimitrakiDepartment of Obstetrics and Gynecology, University of Thessaly, School of Health Sciences, Faculty of Medicine, 41110 Viopolis, Larissa, Greece.
Aspasia TsezouDepartment of Cytogenetics and Molecular Genetics, University of Thessaly, School of Health Sciences, Faculty of Medicine, Larissa, Greece.
Panagiotis GeorgouliasDepartment of Nuclear Medicine, University of Thessaly, School of Health Sciences, Faculty of Medicine, Larissa, Greece.
Ioannis E MessinisDepartment of Obstetrics and Gynecology, University of Thessaly, School of Health Sciences, Faculty of Medicine, 41110 Viopolis, Larissa, Greece. messinis@med.uth.gr.
RMIT University · AUUniversity of Thessaly · GR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeMLH3, a MutL homolog protein in mammals playing a role in DNA mismatch repair, is associated with spermatogenesis and male infertility. The purpose of the present study was to investigate the association of the single-nucleotide polymorphism (SNP), rs 175080 in the MLH3 gene, with sperm parameters in a Greek population.

methodsThe study included 300 men of couples undergoing in vitro fertilization/intracytoplasmic sperm injection-embryo transfer (IVF/ICSI-ET) treatments (years 2011-2013). Genomic DNA was extracted from 300 peripheral blood samples, and conventional quantitative real-time PCR was performed for genotyping. Of them, 122 were from men used as "controls" and 178 from men used as "cases." Allocation to the two groups was based on sperm concentrations (≥15 and <15 million/ml, respectively). Serum FSH, LH, estradiol, testosterone, and prolactin concentrations as well as sperm parameters were compared between three genotypes (GG, GA, and AA). Furthermore, the frequencies of these three genotypes were compared between "cases" and "controls."

resultsAnthropometric parameters and hormonal values did not differ significantly between the three genotypes. Significantly lower sperm concentrations were found in men with the AA genotype as compared to men with the GG and GA genotypes (p < 0.001). The AA genotype had the lower progressive motility values as compared to the other two genotypes (p < 0.05). Also, there was a significantly different distribution of the frequencies of the three genotypes between "cases" and "controls" (p < 0.001).

conclusionsIt is suggested that the studied SNP in the MLH3 gene may be linked to oligozoospermia in Caucasian men of a certain area.

Indexed as

Polymorphism, Single NucleotideAdultCarrier ProteinsGenetic Association StudiesGenotypeHumansInfertility, MaleMaleMutL ProteinsOligospermiaSemen AnalysisCarrier ProteinsMLH3 protein, humanMutL ProteinsMale infertilityMLH3 genePolymorphismsSperm parameters

Identifiers

PMID26520453
PMCPMC4681734
OpenAlexW1902643540

What OpenQuestion holds

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Registered trials

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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.