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Comprehensive metabolic profiles of seminal plasma with different forms of male infertility and their correlation with sperm parameters.

08:00 EDT 21st September 2019 | BioPortfolio

Summary of "Comprehensive metabolic profiles of seminal plasma with different forms of male infertility and their correlation with sperm parameters."

Metabolomics measurements of seminal plasma are widely used in diagnosis and finding of molecular mechanisms of male infertility. However, so far the limitation of metabolome coverage of analytical methods hinders comprehensive metabolite biomarker finding. Moreover, the widely used case-control comparison is not enough to unveil the detailed correlations of the metabolic changes with different sperm abnormalities. In this work, we aimed to have comprehensive metabolic profiling of seminal plasma to find the metabolomics difference between healthy controls and infertility case samples with different semen abnormities by liquid chromatography-mass spectrometry (LC-MS) detection with previously established new sample preparation procedure. Among 624 detected metabolite features, 63 potential biomarkers in various metabolite classes were found for infertility in seminal plasma by multivariate analysis. Interestingly, different infertility forms have different potential biomarkers with few in common, and most of potential biomarkers were found in oligo-astheno-teratospermia samples. To further find the association of the metabolomic changes with specific sperm abnormality, sperm parameters including sperm concentration, sperm deformity rate and sperm motility were also collected, and multivariate linear regression was used to find correlations between sperm parameters and potential biomarkers. Finally, levels of 17 metabolites were found to be significantly correlated with sperm parameters. Most of correlations agreed with previously reported mechanisms of infertility, such as correlation of acylcarnitines with sperm concentration and sperm deformity, and correlation of some antioxidants with sperm deformity rate and sperm motility. Some correlations were reported for the first time, such as negative correlations of isopentenyl pyrophosphate, 2-phosphoglyceric acid and γ-glutamyl-Se-methylselenocysteine with sperm deformity rate, and negative correlation of creatine riboside with sperm concentration. All the potential biomarkers were involved in 14 metabolic pathways playing important role in energy production, antioxidation, hormone regulation and sperm membrane. These results proved previously reported molecular mechanism (such as oxidative stress and energy production) and also gave new possible clues to the pathology of male infertility, which will benefit future etiology, diagnosis and treatment of male infertility.

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This article was published in the following journal.

Name: Journal of pharmaceutical and biomedical analysis
ISSN: 1873-264X
Pages: 112888

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Medical and Biotech [MESH] Definitions

Proteins found in SEMEN. Major seminal plasma proteins are secretory proteins from the male sex accessory glands, such as the SEMINAL VESICLES and the PROSTATE. They include the seminal vesicle-specific antigen, an ejaculate clotting protein; and the PROSTATE-SPECIFIC ANTIGEN, a protease and an esterase.

The secretory proteins of the seminal vesicles are proteins and enzymes that are important in the rapid clotting of the ejaculate. The major clotting protein is seminal vesicle-specific antigen. Many of these seminal vesicle proteins are under androgen regulation, and are substrates for the prostatic enzymes, such as the PROSTATE-SPECIFIC ANTIGEN, a protease and an esterase.

All the organs involved in reproduction and the formation and release of URINE. It includes the kidneys, ureters, BLADDER; URETHRA, and the organs of reproduction - ovaries, UTERUS; FALLOPIAN TUBES; VAGINA; and CLITORIS in women and the testes; SEMINAL VESICLES; PROSTATE; seminal ducts; and PENIS in men.

A proteinase inhibitor found in various BODILY SECRETIONS that coat mucosal surfaces such as SEMINAL PLASMA; CERVICAL MUCUS; and bronchial secretions. It plays a role in protecting epithelial tissues from LEUKOCYTE-derived serine proteases such as NEUTROPHIL ELASTASE.

Removal of plasma and replacement with various fluids, e.g., fresh frozen plasma, plasma protein fractions (PPF), albumin preparations, dextran solutions, saline. Used in treatment of autoimmune diseases, immune complex diseases, diseases of excess plasma factors, and other conditions.

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