Evidence map›Paper›PMID 33884771›Full record

ArticleAndrology2021

Regional and ethnic differences in semen quality and reproductive hormones in Russia: A Siberian population-based cohort study of young men.

Ludmila Osadchuk, Larisa Shantanova, Ivan Troev, Maxim Kleshchev, Alexander Osadchuk

Open access · hybridAbstract read
In one paragraph

Article in Andrology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
4.7field-weighted citation impact, top 6% 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

8 citing papers in PubMed, 19 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

5 authors at 3 institutions in 1 country.

Ludmila OsadchukFederal Research Center 'Institute of Cytology and Genetics', the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia.ORCID 0000-0002-7597-9204
Larisa ShantanovaInstitute of General and Experimental Biology, the Siberian Branch of the Russian Academy of Sciences, Ulan-Ude, Russia.ORCID 0000-0002-4199-1635
Ivan TroevM.K. Ammosov North-Eastern Federal University, Yakutsk, Russia.ORCID 0000-0001-9782-8565
Maxim KleshchevFederal Research Center 'Institute of Cytology and Genetics', the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia.ORCID 0000-0002-7537-2525
Alexander OsadchukFederal Research Center 'Institute of Cytology and Genetics', the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia.ORCID 0000-0002-4210-7354
Institute of Cytology and Genetics · RUInstitute of General and Experimental Biology · RUNorth-Eastern Federal University · RU

Funding

Russian Science Foundation 19-15-00075
6 · The paper itself

Abstract

backgroundThis is the first large-scale Russian study describing semen quality and reproductive hormone levels among young men.

objectivesThe aim of the study was to compare semen quality and reproductive hormone levels in young men of four cities and three ethnic groups living in the Siberian region of Russia and to find out ethnic or environmental reasons for regional differences. MATERIALS AND

methodsThe study population consisted of 1291 young men from Novosibirsk, Kemerovo, Ulan-Ude, and Yakutsk, including 1013 men of three most numerous ethnic groups: Slavs, Buryats, and Yakuts. Each participant provided one sperm and blood sample, information about lifestyle and ethnicity. Anthropometric parameters, semen quality and reproductive hormone levels, were evaluated.

resultsSignificant regional and ethnic differences were detected for semen and reproductive hormone parameters. Median sperm concentrations in Novosibirsk, Kemerovo, Ulan-Ude, and Yakutsk were 54.6, 39.9, 34.7, 33.1 × 10 DISCUSSION: The young men in Novosibirsk and Kemerovo, populated by Slavs, had a higher semen quality compared to Ulan-Ude and Yakutsk, populated by Buryats and Yakuts, apparently due to the higher testicular function in Slavic compared to Asian ethnicity. Impaired spermatogenesis in young men in Kemerovo compared to Novosibirsk, located in the same climatic zone and having a socio-cultural and ethnic identity, may be due to the influence of a polluted environment.

conclusionThe findings suggest that ethnic composition and environment may be responsible for regional differences in semen and reproductive hormone parameters.

Indexed as

Semen AnalysisAdolescentAdultAsian PeopleEthnicityFollicle Stimulating HormoneGeographyGonadal HormonesHumansInhibinsLuteinizing HormoneMaleReproductive HealthSiberiaSperm CountTestosteroneFollicle Stimulating HormoneGonadal Hormonesinhibin BInhibinsLuteinizing HormoneTestosteroneregional and ethnic differencesreproductive hormonessemen quality

Identifiers

PMID33884771
PMCPMC8596582
OpenAlexW3153131271

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.