Evidence map›Paper›PMID 29856778›Full record

ArticlePloS one2018

Incubation of human sperm with micelles made from glycerophospholipid mixtures increases sperm motility and resistance to oxidative stress.

Gonzalo Ferreira, Carlos Costa, Verónica Bassaizteguy, Marcelo Santos, Romina Cardozo, José Montes, Robert Settineri, Garth L Nicolson

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
4.7field-weighted citation impact, top 5% 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

20 citing papers in PubMed, 40 citations in OpenAlex.

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  20. Relevance of Fatty Acids to Sperm Maturation and Quality.Oxidative medicine and cellular longevity · 2020
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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 3 institutions in 2 countries.

Gonzalo FerreiraDepartamento de Biofísica, Laboratorio de Canales Iónicos y Señalización Celular, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay.ORCID 0000-0002-4518-8698
Carlos CostaDepartamento de Biofísica, Laboratorio de Canales Iónicos y Señalización Celular, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay.
Verónica BassaizteguyDepartamento de Biofísica, Laboratorio de Canales Iónicos y Señalización Celular, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay.
Marcelo SantosDepartamento de Biofísica, Laboratorio de Canales Iónicos y Señalización Celular, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay.ORCID 0000-0003-0804-4983
Romina CardozoDepartamento de Biofísica, Laboratorio de Canales Iónicos y Señalización Celular, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay.
José MontesFertilab, Montevideo, Uruguay.
Robert SettineriSierra Productions Research, LLC, Irvine, California, United States of America.
Garth L NicolsonDept. of Molecular Pathology, The Institute for Molecular Medicine, Huntington Beach, California, United States of America.
Universidad de la República de Uruguay · UYInstitute for Molecular Medicine · USSierra Engineering (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Membrane integrity is essential in maintaining sperm viability, signaling, and motility, which are essential for fertilization. Sperm are highly susceptible to oxidative stress, as they are rich in sensitive polyunsaturated fatty acids (PUFA), and are unable to synthesize and repair many essential membrane constituents. Because of this, sperm cellular membranes are important targets of this process. Membrane Lipid Replacement (MLR) with glycerophospholipid mixtures (GPL) has been shown to ameliorate oxidative stress in cells, restore their cellular membranes, and prevent loss of function. Therefore, we tested the effects of MLR on sperm by tracking and monitoring GPL incorporation into their membrane systems and studying their effects on sperm motility and viability under different experimental conditions. Incubation of sperm with mixtures of exogenous, unoxidized GPL results in their incorporation into sperm membranes, as shown by the use of fluorescent dyes attached to GPL. The percent overall (total) sperm motility was increased from 52±2.5% to 68±1.34% after adding GPL to the incubation media, and overall sperm motility was recovered from 7±2% after H2O2 treatment to 58±2.5%)(n = 8, p<0.01) by the incorporation of GPL into sperm membranes. When sperm were exposed to H2O2, the mitochondrial inner membrane potential (MIMP), monitored using the MIMP tracker dye JC-1 in flow cytometry, diminished, whereas the addition of GPL prevented the decrease in MIMP. Confocal microscopy with Rhodamine-123 and JC-1 confirmed the mitochondrial localization of the dyes. We conclude that incubation of human sperm with glycerolphospholipids into the membranes of sperm improves sperm viability, motility, and resistance to oxidizing agents like H2O2. This suggests that human sperm might be useful to test innovative new treatments like MLR, since such treatments could improve fertility when it is adversely affected by increased oxidative stress.

Indexed as

MicellesAdultCell MembraneCulture TechniquesFertility Agents, MaleGlycerophospholipidsHumansMaleOxidative StressSpermatozoaSperm MotilityFertility Agents, MaleGlycerophospholipidsMicelles

Identifiers

PMID29856778
PMCPMC5984032
OpenAlexW2805688132

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.