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Proteomic analysis of seminal fluid from men exhibiting oxidative stress.
Sharma, Rakesh; Agarwal, Ashok; Mohanty, Gayatri; Du Plessis, Stefan S; Gopalan, Banu; Willard, Belinda; Yadav, Satya P; Sabanegh, Edmund.
Afiliación
  • Sharma R; Center for Reproductive Medicine, Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USA. agarwaa@ccf.org.
Reprod Biol Endocrinol ; 11: 85, 2013 Sep 03.
Article en En | MEDLINE | ID: mdl-24004880
ABSTRACT

BACKGROUND:

Seminal plasma serves as a natural reservoir of antioxidants. It helps to remove excessive formation of reactive oxygen species (ROS) and consequently, reduce oxidative stress. Proteomic profiling of seminal plasma proteins is important to understand the molecular mechanisms underlying oxidative stress and sperm dysfunction in infertile men.

METHODS:

This prospective study consisted of 52

subjects:

32 infertile men and 20 healthy donors. Once semen and oxidative stress parameters were assessed (ROS, antioxidant concentration and DNA damage), the subjects were categorized into ROS positive (ROS+) or ROS negative (ROS-). Seminal plasma from each group was pooled and subjected to proteomics analysis. In-solution digestion and protein identification with liquid chromatography tandem mass spectrometry (LC-MS/MS), followed by bioinformatics analyses was used to identify and characterize potential biomarker proteins.

RESULTS:

A total of 14 proteins were identified in this analysis with 7 of these common and unique proteins were identified in both the ROS+ and ROS- groups through MASCOT and SEQUEST analyses, respectively. Prolactin-induced protein was found to be more abundantly present in men with increased levels of ROS. Gene ontology annotations showed extracellular distribution of proteins with a major role in antioxidative activity and regulatory processes.

CONCLUSIONS:

We have identified proteins that help protect against oxidative stress and are uniquely present in the seminal plasma of the ROS- men. Men exhibiting high levels of ROS in their seminal ejaculate are likely to exhibit proteins that are either downregulated or oxidatively modified, and these could potentially contribute to male infertility.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Semen / Estrés Oxidativo Tipo de estudio: Observational_studies Límite: Adult / Humans / Male Idioma: En Revista: Reprod Biol Endocrinol Asunto de la revista: ENDOCRINOLOGIA / MEDICINA REPRODUTIVA Año: 2013 Tipo del documento: Article País de afiliación: Estados Unidos

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Semen / Estrés Oxidativo Tipo de estudio: Observational_studies Límite: Adult / Humans / Male Idioma: En Revista: Reprod Biol Endocrinol Asunto de la revista: ENDOCRINOLOGIA / MEDICINA REPRODUTIVA Año: 2013 Tipo del documento: Article País de afiliación: Estados Unidos
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