Evidence map›Paper›PMID 30771790›Full record

Trial reportReproductive biology and endocrinology : RB&E2019

Effects of N-acetyl-cysteine supplementation on sperm quality, chromatin integrity and level of oxidative stress in infertile men.

Rahil Jannatifar, Kazem Parivar, Nasim Hayati Roodbari, Mohammad Hossein Nasr-Esfahani

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Reproductive biology and endocrinology : RB&E, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 68 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
68citing papers in PubMed, 1 pooled it
19.1field-weighted citation impact, top 1% 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

68 citing papers in PubMed, 1 synthesis or guideline pooled it, 148 citations in OpenAlex.

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  18. Protective Effect ofBiopreservation and biobanking · 2024
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8 more citing papers are in PubMed but not listed here.

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

4 authors at 2 institutions in 1 country.

Rahil JannatifarDepartment of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Kazem ParivarDepartment of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Nasim Hayati RoodbariDepartment of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Mohammad Hossein Nasr-EsfahaniDepartment of Reproductive Biotechnology, Reproductive Biomedicine Research Center, ACECR, Royan Institute for Biotechnology, Isfahan, Iran. mh.nasr-esfahani@royaninstitute.org.
Islamic Azad University, Science and Research Branch · IRRoyan Institute · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundInfertile men have higher levels of semen reactive oxygen species (ROS) than fertile men. High levels of semen ROS can cause sperm dysfunction, sperm DNA damage and reduced male reproductive potential. This study investigated the effects of supplementation with N-acetyl-cysteine (NAC) on the sperm quality, chromatin integrity and levels of oxidative stress in infertile men.

methodsThe study was carried out in the unit of ACECR Infertility Research Center, Qom, Iran. The patients consisted of 50 infertile men with asthenoteratozoospermia who received NAC (600 mg/d) orally for 3 months, after which they were compared with pre-treatment status. Semen was analyzed according to WHO (2010), followed by the assessment of protamine content [chromomycin A3 (CMA3)] and DNA integrity [terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL)]. Oxidative stress markers, i.e. total antioxidant capacity (TAC) and malondialdehyde (MDA), as well as hormonal profile (LH, FSH, Testosterone and Prolactin) were determined by ELISA kit.

resultsAfter NAC treatment, patients' sperm count and motility increased significantly whereas abnormal morphology, DNA fragmentation and protamine deficiency showed significant decreases compared to pre-treatment levels (P < 0.05). Hormonal profile improvement was associated with lowered FSH and LH levels and increased amount of testosterone (P < 0.05). TAC significantly increased and MDA decreased with an inverse significant correlation between TAC and MDA (P < 0.05).

conclusionNAC oral supplementation may improve sperm parameters and oxidative/antioxidant status in infertile males.

Indexed as

Dietary SupplementsAcetylcysteineAdultChromatinDNA DamageFree Radical ScavengersHumansInfertility, MaleIranMaleOxidative StressReactive Oxygen SpeciesSemen AnalysisSpermatozoaSperm MotilityAcetylcysteineChromatinFree Radical ScavengersReactive Oxygen SpeciesAsthenoteratozoospermiaInfertilityN-acetyl-cysteineOxidative stress

Identifiers

PMID30771790
PMCPMC6377938
OpenAlexW2922006436

What OpenQuestion holds

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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.