RESUMO
The present study was aimed at evaluating the seminal plasma proteins and sperm parameters of Curraleiro Pé-Duro bulls. Semen was collected from 10 bulls by electroejaculation, and sperm parameters were evaluated in fresh and frozen-thawed semen. Seminal plasma proteins were analyzed by 2-D SDS-PAGE and mass spectrophotometry. Tools in computational biology were used to generate bioinformatic knowledge and evaluate gene ontology, protein-protein interactions, phylogenetic trees and multiple sequence alignments. Sperm motility in fresh and frozen-thawed semen was 78.8±1.8% and 21.2±1.6%, respectively. Pearson's correlations were evaluated (p<0.05). Sperm motility and vigor in fresh semen were correlated with clusterin, TIMP2 and cathepsin S (r=0.64-0.71) and sperm defects were related to inhibitor of carbonic anhydrase and BSP 5 (r=0.78-0.80). Clusterin, BSP 5, alpha-enolase, creatine kinase M-type, glyceraldehyde-3-phosphate dehydrogenase, BSP 3, albumin, and 5'-nucleotidase and legumain were correlated with acrosome intact live sperm (r=0.80-0.64). Associations were detected between sperm vigor and spermadhesin 1 (r=-0.89), and between sperm defects in fresh semen and spermadhesin 1 and clusterin (r=-0.81). Sperm motility in frozen-thawed semen was associated with BSP 1, spermadhesin 1, clusterin and spermadhesin Z13 (r=0.64-0.85). The percent of motile sperm after freeze-thawing was negatively correlated (r=-0.64) with the amount of spermadhesin 1 in the seminal plasma. Based on in silico analysis, TIMP2 interacted with BSP1, BSP3, BSP5 and metalloproteinases. Molecular functions of proteins associated with sperm parameters were binding, catalytic activity and enzymatic regulation. Amino acid sequences of spermadhesin 1 and BSP 1 from Bos taurus, and other domestic species were similar. Phylogenetic tree analysis demonstrated that clusterin from Bos taurus was related to Ovis aries and domains of clusterin, spermadhesin 1, BSP 1 and inhibitor of carbonic anhydrase were conserved as well. In summary, specific seminal proteins are associated with sperm parameters of locally-adapted bulls. Use of the endangered mammalian as a model may assist in understanding aspects of evolutionary adaptations and could improve assisted reproductive biotechnologies.
Assuntos
Biodiversidade , Bovinos/genética , Conservação dos Recursos Naturais , Variação Genética , Proteômica , Sêmen/química , Adaptação Fisiológica , Animais , Biomarcadores , Brasil , MasculinoRESUMO
Nas últimas décadas, o crescente interesse pela cinofilia motivou o crescimento de uma atividadecomercial lucrativa. Assim, há um interesse em aumentar a performance reprodutiva por meio de biotécnicas dareprodução, como a criopreservação de gametas e a inseminação artificial. A identificação de proteínas presentesno plasma seminal canino dá início a novas discussões sobre o uso de proteínas em aditivos que melhorem aviabilidade espermática e possam ser usados como método contraceptivo em cadelas. Dessa forma, este trabalhoobjetivou descrever as proteínas do plasma seminal canino verificadas na literatura científica, como alactoferrina, a arginina esterase, as proteínas ligadoras de heparina, a osteopontina e as proteínas ligadoras dezinco, assim como relacioná-las com suas respectivas funções diante da esfera reprodutiva.
In the past few years, the interesting in dogs has provided an increase of this commercial activity. Thus,there is an interest in the increase of reproductive performance using biotechnology such as semencryopreservation and artificial insemination. The identification of proteins present in seminal plasma canineamazed initiates further discussion on the use of protein additives that improve sperm viability and it can used ascontraception in female dogs. Thus, this study aimed to describe the canine seminal plasma proteins, describedin the scientific literature, such as lactoferrin, arginine esterase, the heparin-binding proteins, osteopontin andzinc binding proteins, as well as relate them to their respective functions on the reproductive sphere.
Assuntos
Masculino , Animais , Cães , Cães/fisiologia , Heparina , Osteopontina , Sêmen/citologiaRESUMO
Nas últimas décadas, o crescente interesse pela cinofilia motivou o crescimento de uma atividadecomercial lucrativa. Assim, há um interesse em aumentar a performance reprodutiva por meio de biotécnicas dareprodução, como a criopreservação de gametas e a inseminação artificial. A identificação de proteínas presentesno plasma seminal canino dá início a novas discussões sobre o uso de proteínas em aditivos que melhorem aviabilidade espermática e possam ser usados como método contraceptivo em cadelas. Dessa forma, este trabalhoobjetivou descrever as proteínas do plasma seminal canino verificadas na literatura científica, como alactoferrina, a arginina esterase, as proteínas ligadoras de heparina, a osteopontina e as proteínas ligadoras dezinco, assim como relacioná-las com suas respectivas funções diante da esfera reprodutiva.(AU)
In the past few years, the interesting in dogs has provided an increase of this commercial activity. Thus,there is an interest in the increase of reproductive performance using biotechnology such as semencryopreservation and artificial insemination. The identification of proteins present in seminal plasma canineamazed initiates further discussion on the use of protein additives that improve sperm viability and it can used ascontraception in female dogs. Thus, this study aimed to describe the canine seminal plasma proteins, describedin the scientific literature, such as lactoferrin, arginine esterase, the heparin-binding proteins, osteopontin andzinc binding proteins, as well as relate them to their respective functions on the reproductive sphere.(AU)
Assuntos
Animais , Masculino , Cães , Cães/fisiologia , Sêmen/citologia , Osteopontina , HeparinaRESUMO
Componentes moleculares dos espermatozoides, ou dos meios que os cercam, influenciam a capacidade fecundante destas células. Dado tal conceito, proteínas do plasma seminal modulam cruciais funções e processos da reprodução, como a motilidade e capacitação espermática, proteção celular, reação acrossômica e fertilização. As relações empíricas entre índices de fertilidade e proteínas seminais em determinadas espécies indicam que estas proteínas têm o potencial de serem identificadas como marcadores da capacidade reprodutiva do macho.
Molecular components of the sperm, or from the media that surround them, influence the fertilizing capacity of such cells. Given this concept, proteins of the seminal plasma modulate crucial functions and events of reproduction, such as sperm motility and capacitation, cell protection, acrosome reaction and fertilization. Empirical associations between some proteins and fertility indexes in certain species indicate that these proteins can be potentially identified as molecular markers of the male reproductive status.
Assuntos
Animais , Capacitação Espermática/fisiologia , Proteômica/estatística & dados numéricos , Proteômica/métodos , Sêmen/química , Espermatozoides/crescimento & desenvolvimento , Motilidade dos EspermatozoidesRESUMO
Componentes moleculares dos espermatozoides, ou dos meios que os cercam, influenciam a capacidade fecundante destas células. Dado tal conceito, proteínas do plasma seminal modulam cruciais funções e processos da reprodução, como a motilidade e capacitação espermática, proteção celular, reação acrossômica e fertilização. As relações empíricas entre índices de fertilidade e proteínas seminais em determinadas espécies indicam que estas proteínas têm o potencial de serem identificadas como marcadores da capacidade reprodutiva do macho.(AU)
Molecular components of the sperm, or from the media that surround them, influence the fertilizing capacity of such cells. Given this concept, proteins of the seminal plasma modulate crucial functions and events of reproduction, such as sperm motility and capacitation, cell protection, acrosome reaction and fertilization. Empirical associations between some proteins and fertility indexes in certain species indicate that these proteins can be potentially identified as molecular markers of the male reproductive status.(AU)