title: Oxidative stress biomarkers and hormonal profile in human patients undergoing varicocelectomy.
abstract: The aetiology of varicocele is multifactorial although hormonal imbalance and oxidative stress play a key role in the progression of illness. No conclusive evidence has been presented previously, describing the changes in these two factors and the evolution of patients after varicocelectomy. Semen characteristics and hormonal profile were analysed in 36 infertile men with unilateral left varicocele and 33 age-paired controls (proved to be fertile men), after careful inclusion/exclusion selection criteria. Liposoluble and hydrosoluble antioxidants, oligoelements and enzyme activities of the antioxidant defence system were also determined in plasma and erythrocyte from antecubital and spermatic veins, and in spermatozoa. Data were compared between groups at different times before and after varicocelectomy. Decreased levels of liposoluble and hydrosoluble antioxidants and increased activities of the antioxidant defence system enzymes were observed in patients compared with controls. Varicocelectomy normalized this condition at different post-surgical times. Levels of Zn and Se in seminal plasma, protein carbonyls and fragmented DNA remained elevated up to 1 month after surgery. Luteinizing and follicle stimulating hormone concentrations exhibited a biphasic behaviour while testosterone was diminished in patients but normalized soon after varicocelectomy. The results clearly demonstrate the link between the antioxidant defence system, hormonal status and semen characteristics along the post-varicocelectomy period. We suggest that oxidative biomarkers may be appropriate in controlling the evolution of post-varicocelectomy patients, and antioxidant supplementation may improve the clinical condition of infertile men with varicocele.
authors.affiliation: INIBIOLP (Instituto de Investigaciones Bioquímicas de La Plata), CONICET-UNLP, Cátedra de Bioquímica de la Facultad de Ciencias Médicas de la Universidad Nacional de La Plata, Argentina.
authors.forename: Graciela E
authors.initials: GE
authors.lastname: Hurtado de Catalfo
authors.forename: Adalberto
authors.initials: A
authors.lastname: Ranieri-Casilla
authors.forename: Fernando A
authors.initials: FA
authors.lastname: Marra
authors.forename: María J T
authors.initials: MJ
authors.lastname: de Alaniz
authors.forename: Carlos A
authors.initials: CA
authors.lastname: Marra
mesh_terms: D000328:Adult; D000975:Antioxidants / Q000378:metabolism*; D001118:Argentina; D015415:Biomarkers / Q000097:blood; D016022:Case-Control Studies; D053938:DNA Fragmentation; D005640:Follicle Stimulating Hormone / Q000097:blood; D006728:Hormones / Q000097:blood*; D006801:Humans; D007248:Infertility, Male / Q000097:blood / Q000201:enzymology / Q000209:etiology* / Q000378:metabolism / Q000601:surgery; D007986:Luteinizing Hormone / Q000097:blood; D008297:Male; D018384:Oxidative Stress; D050050:Protein Carbonylation; D012661:Semen / Q000201:enzymology / Q000378:metabolism*; D029589:Seminal Plasma Proteins / Q000378:metabolism; D013094:Spermatozoa / Q000378:metabolism; D013739:Testosterone / Q000097:blood; D013997:Time Factors; D016896:Treatment Outcome; D014646:Varicocele / Q000097:blood / Q000150:complications / Q000201:enzymology / Q000378:metabolism* / Q000601:surgery; D014656:Vascular Surgical Procedures
chemical_list: D000975:Antioxidants; D015415:Biomarkers; D006728:Hormones; D029589:Seminal Plasma Proteins; D013739:Testosterone; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone