Evidence map›Paper›PMID 33269725›Full record

ArticleAsian journal of andrology

A decrease of docosahexaenoic acid in testes of mice fed a high-fat diet is associated with impaired sperm acrosome reaction and fertility.

Julio Bunay, Luz-Maria Gallardo, Jorge Luis Torres-Fuentes, M Verónica Aguirre-Arias, Renan Orellana, Néstor Sepúlveda, Ricardo D Moreno

Open access · goldAbstract read
In one paragraph

Article in Asian journal of andrology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
4.2field-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

17 citing papers in PubMed, 22 citations in OpenAlex.

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  10. Male infertility and the human microbiome.Frontiers in reproductive health · 2023
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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 3 institutions in 1 country.

Julio BunayPhysiology Department, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile (PUC), Santiago 8331150, Chile.
Luz-Maria GallardoPhysiology Department, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile (PUC), Santiago 8331150, Chile.
Jorge Luis Torres-FuentesPhysiology Department, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile (PUC), Santiago 8331150, Chile.
M Verónica Aguirre-AriasPhysiology Department, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile (PUC), Santiago 8331150, Chile.
Renan OrellanaDepartment of Chemistry and Biological Sciences, Health Sciences Faculty, Universidad Bernardo O Higgins, Santiago 8370854, Chile.
Néstor SepúlvedaCenter of Excellence in Biotechnology of Reproduction, Universidad de la Frontera, Temuco 4780000, Chile.
Ricardo D MorenoPhysiology Department, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile (PUC), Santiago 8331150, Chile.
Pontificia Universidad Católica de Chile · CLUniversidad Bernardo O'Higgins · CLUniversidad de La Frontera · CL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Obesity is a major worldwide health problem that is related to most chronic diseases, including male infertility. Owing to its wide impact on health, mechanisms underlying obesity-related infertility remain unknown. In this study, we report that mice fed a high-fat diet (HFD) for over 2 months showed reduced fertility rates and increased germ cell apoptosis, seminiferous tubule degeneration, and decreased intratesticular estradiol (E2) and E2-to-testosterone ratio. Interestingly, we also detected a decrease in testicular fatty acid levels, behenic acid (C22:0), and docosahexaenoic acid (DHA, 22:6n-3), which may be related to the production of dysfunctional spermatozoa. Overall, we did not detect any changes in the frequency of seminiferous tubule stages, sperm count, or rate of in vitro capacitation. However, there was an increase in spontaneous and progesterone-induced acrosomal exocytosis (acrosome reaction) in spermatozoa from HFD-fed mice. These data suggest that a decrease in E2 and fatty acid levels influences spermatogenesis and some steps of acrosome biogenesis that will have consequences for fertilization. Thus, our results add new evidence about the adverse effect of obesity in male reproduction and suggest that the acrosomal reaction can also be affected under this condition.

Indexed as

Acrosome ReactionAnimalsDiet, High-FatDisease Models, AnimalDocosahexaenoic AcidsInfertility, MaleMaleMiceObesitySpermatozoaTestisDocosahexaenoic Acidscholesterolestradiolfat acidtestistestosterone

Identifiers

PMID33269725
PMCPMC8152421
OpenAlexW3107589110

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.