Evidence map›Paper›PMID 31073727›Full record

ArticleJournal of assisted reproduction and genetics2019

Decreased very long chain polyunsaturated fatty acids in sperm correlates with sperm quantity and quality.

LaTasha B Craig, Richard S Brush, Michael T Sullivan, Michael T Zavy, Martin-Paul Agbaga, Robert E Anderson

Open access · bronzeAbstract read
In one paragraph

Article in Journal of assisted reproduction and genetics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
5.5field-weighted citation impact, top 4% 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

29 citing papers in PubMed, 56 citations in OpenAlex.

  1. Article
  2. The Impact ofAnimals : an open access journal from MDPI · 2025
    Article
  3. Article
  4. Novel insights into the lipid signalling in human spermatozoa.Human reproduction (Oxford, England) · 2025
    Review
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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

6 authors at 2 institutions in 1 country.

LaTasha B CraigSection of Reproductive Endocrinology & Infertility, Department of Obstetrics and Gynecology, College of Medicine, University of Oklahoma Health Sciences Center, PO Box 26901, AAT 2400, Oklahoma City, OK, 73126, USA. latasha-craig@ouhsc.edu.ORCID http://orcid.org/0000-0002-7311-8603
Richard S BrushDepartment of Ophthalmology, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA.
Michael T SullivanDepartment of Ophthalmology, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA.
Michael T ZavySection of Reproductive Endocrinology & Infertility, Department of Obstetrics and Gynecology, College of Medicine, University of Oklahoma Health Sciences Center, PO Box 26901, AAT 2400, Oklahoma City, OK, 73126, USA.
Martin-Paul AgbagaDepartment of Ophthalmology, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA.
Robert E AndersonDepartment of Ophthalmology, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA.
Dean McGee Eye Institute · USUniversity of Oklahoma Health Sciences Center · US

Funding

P30-CENTER CORE GRANT FOR VISION RESEARCHP30EY021725 · NEI · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI Michelle C Callegan · 2011 to 2026
$10.5M
ROLE OF LIPID PEROXIDATIONS IN RETINAL DEGENERATIONSR01EY004149 · NEI · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI ANDERSON, ROBERT E · 1985 to 2018
$8.3M
NEI NIH HHS P30 EY021725NEI NIH HHS R01 EY004149NIH HHS EY04149NIH HHS P30EY021725
6 · The paper itself

Abstract

purposeTo determine if levels of very long chain polyunsaturated fatty acids (VLC-PUFA; ≥ 28 carbons;4-6 double bonds) in human sperm correlate with sperm quantity and quality as determined by a complete semen analysis.

methodsEjaculates from 70 men underwent a complete semen analysis, which included volume, count, motility, progression, agglutination, viscosity, morphology, and pH. For lipid analysis, sperm were pelleted to remove the semen. Lipids were extracted from the cell pellet and methyl esters of total lipids analyzed by gas chromatography. The sphingolipids were enriched and sphingomyelin (SM) species measured using tandem mass spectrometry. Pair-wise Pearson correlation and linear regression analysis compared percent VLC-PUFA-SM and percent docosahexaenoic acid (DHA) to results from the semen analysis.

resultsVLC-PUFA-SM species having 28-34 carbon fatty acids were detected in sperm samples, with 28 and 30 carbon VLC-PUFA as most the abundant. The sum of all VLC-PUFA-SM species comprised 0 to 6.1% of the overall SM pool (mean 2.1%). Pair-wise Pearson analyses showed that lower levels of VLC-PUFA-SM positively correlated with lower total motile count (0.68) and lower total count (0.67). Total VLC-PUFA-SM and mole % DHA (22:6n3) were not strongly correlated (- 0.24). Linear regression analysis confirmed these findings.

conclusionThis study revealed a positive correlation between the levels of VLC-PUFA with sperm count and total motile count and suggests that both sperm quality and quantity may depend on the presence of VLC-PUFA. The lack of correlation between VLC-PUFA and DHA suggests that low VLC-PUFA levels do not result from inadequate PUFA precursors.

Indexed as

AdolescentAdultFatty Acids, UnsaturatedFertilityHumansLipidsMaleMiddle AgedSemenSemen AnalysisSpermatozoaSperm CountSperm MotilitySphingomyelinsTandem Mass SpectrometryYoung AdultFatty Acids, UnsaturatedLipidsSphingomyelinsFatty acidsFertilityMotilitySpermSperm countSperm lipidsSphingomyelinVery long chain polyunsaturated fatty acids

Identifiers

PMID31073727
PMCPMC6642247
OpenAlexW2944639278

What OpenQuestion holds

Textmetadata
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.