ArticleIn vivo (Athens, Greece)
Assessment of Blood Plasma Free-amino Acid Levels in Infertile Men.
Article in In vivo (Athens, Greece). The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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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.
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Who cites it
3 citing papers in PubMed, 4 citations in OpenAlex.
- Integrated seminal plasma metabolomics and lipidomics profiling highlight distinctive signature of varicocele patients with male infertility.Asian journal of andrology · 2025Article
- Branched-chain and Aromatic Amino Acids in Blood and Seminal Plasma are Associated with Sperm Parameters; A Practice within a Fertility Clinic Considering the Metabolic Syndrome.Reproductive sciences (Thousand Oaks, Calif.) · 2025Article
- Microbiome-Metabolome Reveals the Contribution of the Gut-Testis Axis to Sperm Motility in Sheep (Animals : an open access journal from MDPI · 2023Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND/
aimThe objective of this study was to investigate the significance of the blood levels of free amino acids (AAs) in infertile men. PATIENTS AND
methodsNinety-three men who underwent examinations for infertility were included. The concentrations of 20 AAs were measured and compared in four groups (normospermia, obstructive azoospermia, oligozoospermia, non-obstructive azoospermia) based on semen analysis and clinical parameters.
resultsWhen the 93 men were divided into normospermia, obstructive azoospermia, oligozoospermia, and non-obstructive azoospermia groups, no significant differences were found in the concentrations of the 20 AAs between them. We then compared 49 men diagnosed with normozoospermia or oligozoospermia according to the median sperm motility and morphology abnormalities rates (30% and 20%, respectively). Men with low motility rates had significantly lower levels of tryptophan and alanine, and men with high abnormal morphology rates had significantly lower levels of aspartate and glutamate.
conclusionAAs are probably involved in the pathogenesis of male infertility, particularly oligozoospermia.
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Registered trials
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