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Clin Chim Acta. 2015 Oct 23;450:254-61. doi: 10.1016/j.cca.2015.09.001. Epub 2015 Sep 2.

Metabolic characterization of asthenozoospermia using nontargeted seminal plasma metabolomics.

Author information

1
Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen 518035, China.
2
State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
3
Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen 518035, China. Electronic address: zmcai13602530322@163.com.

Abstract

BACKGROUND:

Asthenozoospermia (AS) is a common cause of male infertility. Due to the limitation of routine semen analysis, metabolic alterations associated with the disease are unclear. We applied a metabolic profiling strategy as a surrogate method to accurately assess and provide new insights into the etiologies of asthenozoospermia.

METHODS:

Seminal plasma samples from patients diagnosis with asthenozoospermia (n=33) and healthy subjects (n=30) were investigated using a nontargeted metabolomics approach based on proton nuclear magnetic resonance ((1)H NMR) spectroscopy. The spectral data were then subjected to multivariate and univariate analyses to identify metabolites that were correlated with asthenozoospermia. The disturbed metabolic pathways which the biomarkers were involved in were analyzed.

RESULTS:

Nineteen metabolites including up-regulation or down-regulation of several amino acids, changes in lipids metabolism, phospholipids (choline) metabolism, cholesterol metabolism, nucleoside metabolism, the Krebs cycle and energy metabolism were identified and associated with asthenozoospermia. In particular, the elevation of oxysterols such as 5α-cholesterol and 7-ketocholesterol in seminal plasma of patients with asthenozoospermia was an important finding, indicating the important role of oxidative stress in the mechanism of asthenozoospermia.

CONCLUSIONS:

The excellent performance of this metabolomics approach offer a highly novel means of etiological diagnosis of asthenozoospermia.

KEYWORDS:

Asthenozoospermia; Metabolomics; Proton nuclear magnetic resonance ((1)H NMR) spectroscopy; Seminal plasma

PMID:
26342261
DOI:
10.1016/j.cca.2015.09.001
[Indexed for MEDLINE]

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