Leptin and insulin in the seminal plasma of zebu bulls in peripuberty

Autor:	Ticiano Guimarães Leite, Pablo Fabricio Bruno Pinto, M. B. D Ferreira, Lucas Luz Emerick, Fernando Andrade Souza, Vicente Ribeiro do Vale Filho, Venício José de Andrade, Jorge André Matias Martins
Rok vydání:	2012
Předmět:	puberty medicine.medical_specialty Insulin medicine.medical_treatment Leptin Radioimmunoassay Semen Biology Zebu Sperm Crossbreed Endocrinology Internal medicine medicine Animal Science and Zoology lcsh:Animal culture sperm defect Gyr dairy bulls lcsh:SF1-1100 Hormone
Zdroj:	Revista Brasileira de Zootecnia, Vol 41, Iss 4, Pp 923-928 (2012) Revista Brasileira de Zootecnia v.41 n.4 2012 Revista Brasileira de Zootecnia Sociedade Brasileira de Zootecnia (SBZ) instacron:SBZ Revista Brasileira de Zootecnia, Volume: 41, Issue: 4, Pages: 923-928, Published: APR 2012
ISSN:	1516-3598
DOI:	10.1590/s1516-35982012000400013
Popis:	In order to determine the profile of leptin and insulin values in seminal plasma and their correlations with sperm patterns during the peripuberty, a total of 16 crossbred Gyr dairy bulls were monitored from 60 days before to 60 days after puberty, separated into two groups, early and regular, according to the onset of puberty. Hormone values were determined by radioimmunoassay after gel filtration in fast performance liquid chromatography and semen patterns, according to the Brazilian College of Animal Reproduction. Insulin concentrations in seminal plasma did not differ between groups, nor between the ages, with the pooling of the data showing average of 35.15±16.93, 36.60±26.21, 26.82±09.81, and 43.56±31.71 32.24±16.71 U/mL for the pubertal period of -60, -30, 0, +30 and +60 days, respectively. These values were not correlated with sperm parameters, but differed in the group of animals with the highest percentage of major defects (31.08±18.58 U/mL) compared with those with lower percentage of these sperm defects (40.01±25.37 U/mL). Leptin was not correlated with sperm parameters and did not differ between groups or stage of sexual development, with concentrations of 23.10±10.43, 24.35±9.42, 22.41±9.90, 23.76±9.69 and 24.99±11.42 ng/mL for the periods of puberty aforementioned, respectively, after being grouped. These results demonstrated the binding of insulin to the structural quality of the sperm cell, and this hormone is indicated in andrologycal evaluation of future breeding soundness.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c827d16fd4c965d37848c66e22b6bde6 https://doi.org/10.1590/s1516-35982012000400013 Zobrazit plný text záznamu