Seminal plasma: effect on motility, membrane functionality, and spermatic chromatin dispersion of equine sperm treated with N-acetyl-L-cysteine at 5C
Acta sci. vet. (Impr.)
; 44: 01-06, 2016. ilus, tab
Article
em En
| VETINDEX
| ID: biblio-1457405
Biblioteca responsável:
BR68.1
Localização: BR68.1
ABSTRACT
Background:
N-acetyl-L-cysteine (NAC) is a low molecular weight thiol studied as an antioxidant for stallion semen preservation without changes on sperm viability. Equine seminal plasma is rich in sulfur proteins (cysteine residues) named CRISPS, which, when combined with sulfur-containing antioxidants, can enhance the appearance of DNA lesions. The aim of this study was to assess and compare the effect of different concentrations of NAC by evaluating motility, membrane function and sperm chromatin integrity of equine semen cooled at 5C in 50% of seminal plasma. Materials, Methods &Results:
Nine ejaculates from 9 stallions were divided into 4 aliquots, diluted and divided in nonsupplemented skim milk group (0.0 mM), or supplemented with 5.0, 2.5 and 0.5 mM NAC. Evaluations were made at 0 h, 24 h and 48 h of cooling, except for motility which was evaluated only up to 24 h. The 0.5 (59.7 M2) and 5.0 mM NAC (55.5 M2) groups showed similar areas of sperm chromatin dispersion among all groups. However, the area of chromatin dispersion between the non-supplemented group was higher = 65.3 M2 than the group supplemented with 2.5 mM. The percentage of cells with a functional plasma membrane was similar between supplemented and non-supplemented (0.0 mM) groups, but higher (P 0.05) in the 0.5 mM NAC (39.7 and 39.8%, respectively) than that of 2.5 mM (34.5%) and 5.0 mM [...]Palavras-chave
Texto completo:
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Base de dados:
VETINDEX
Assunto principal:
Sêmen
/
Preservação do Sêmen
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Motilidade dos Espermatozoides
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Cromatina
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Análise do Sêmen
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Cavalos
Limite:
Animals
Idioma:
En
Revista:
Acta sci. vet. (Impr.)
Ano de publicação:
2016
Tipo de documento:
Article