Avaliação dos parâmetros espermáticos e caracterização do perfil bioquímico do plasma seminal de cães (Canis familiaris – LINNAEUS, 1758) com hiperplasia prostática benigna, tratados com toxina botulínica A
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Data
2009-02-17
Autores
Motheo, Tathiana Ferguson [UNESP]
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Universidade Estadual Paulista (Unesp)
Resumo
Atualmente, estudos têm demonstrado a utilização da toxina botulínica do tipo A (TB-A) no tratamento de afecções prostáticas, como a hiperplasia prostática benigna. Ainda, sabe-se que alguns componentes bioquímicos do plasma seminal são relativamente específicos para a regulação da função espermática. O objetivo deste trabalho foi avaliar os possíveis efeitos deletérios ou benéficos da TB-A sobre a fertilidade de cães com HPB. Foram utilizados 18 cães machos, sem raça definida com sinais de HPB. Os animais foram divididos ao acaso em 3 grupos de 6 cães que receberam injeção intraprostática de solução salina de NaCl 0,9% (GC), solução contendo 250U (GI) e 500U de TB-A (GII). Quatro amostras foram colhidas antes da aplicação e 2, 4 e 8 semanas após o tratamento. Foi mensurado o pH e dosadas as concentrações de proteína total, cloretos totais, cálcio, potássio e sódio das amostras de plasma seminal. Ainda, foi realizada eletroforese SDS-Page utilizando géis de poliacrilamida nas concentrações de 12 e 18%. Os resultados foram avaliados por meio de análise de variância (ANOVA) e ao teste de Kruskall-Wallis (p<0,05). Não foram observadas diferenças significativas nos parâmetros bioquímicos avaliados. Outrossim, foram constatadas 31 bandas protéicas, com pesos moleculares variando de 106,2 a 3,9 kDa semelhantemente aos achados descritos na literatura. Destarte, pode-se concluir que os tratamentos com 250U e 500U de TB-A não alteraram os perfis bioquímico e protéico do plasma seminal de cães com HPB e, portanto podem ser considerados uma boa opção para cães destinados à reprodução ou envolvidos em programas de criopreservação de gametas.
Recently, botulinum neurotoxin type A (BoNT-A) application in the lower urinary tract has been extended to prostate disorders such as benign prostatic hyperplasia (BPH). Nevertheless, sperm function is highly dependent on ionic and protein environment. The goal of the present study was to evaluate the effects of BoNTA treatment on seminal plasma biochemical and eletrophoretic profile in dogs with BPH. Eighteen mature male mongrel dogs with BPH, were use in this study. They were randomly divided in three groups, which received intraprostatic injection of 0,9% NaCl normal saline solution (GI), 250U(GII) and 500U (GIII) of BoNT-A. All animals were previously conditioned to semen collection and four semen samples were collected before treatment and at 2, 4 and 8 weeks after injection. The semen was evaluated, and centrifuged to obtain seminal plasma for measurement of pH, total protein concentration (TP), total chlorides (TC), calcium (Ca), potassium (K), and sodium (Na). Additionally, one-dimensional sodium dodecyl sulfatepolyacrilamide gel eletrophoresis (SDS-PAGE) was carried out on 12 and 18% vertical minigel. One way ANOVA and Kruskall-Wallis with Bonferoni as a post hoc test were used to comparison of means (P<0.05). Average pH, TP, TC, Ca, K did not vary significantly at any time point and among each studied group and maintained normal values for the specie. Similarly as described in the literature, the eletrophoresis analysis of the pooled eluded fractions, identified 31 bands, with molecular weights varying from 106.2 to 3.9 kDA, In conclusion, the treatment with 250U and 500U of BoNT-A did not modify the biochemical or protein profiles of the seminal plasma of dogs with BPH.
Recently, botulinum neurotoxin type A (BoNT-A) application in the lower urinary tract has been extended to prostate disorders such as benign prostatic hyperplasia (BPH). Nevertheless, sperm function is highly dependent on ionic and protein environment. The goal of the present study was to evaluate the effects of BoNTA treatment on seminal plasma biochemical and eletrophoretic profile in dogs with BPH. Eighteen mature male mongrel dogs with BPH, were use in this study. They were randomly divided in three groups, which received intraprostatic injection of 0,9% NaCl normal saline solution (GI), 250U(GII) and 500U (GIII) of BoNT-A. All animals were previously conditioned to semen collection and four semen samples were collected before treatment and at 2, 4 and 8 weeks after injection. The semen was evaluated, and centrifuged to obtain seminal plasma for measurement of pH, total protein concentration (TP), total chlorides (TC), calcium (Ca), potassium (K), and sodium (Na). Additionally, one-dimensional sodium dodecyl sulfatepolyacrilamide gel eletrophoresis (SDS-PAGE) was carried out on 12 and 18% vertical minigel. One way ANOVA and Kruskall-Wallis with Bonferoni as a post hoc test were used to comparison of means (P<0.05). Average pH, TP, TC, Ca, K did not vary significantly at any time point and among each studied group and maintained normal values for the specie. Similarly as described in the literature, the eletrophoresis analysis of the pooled eluded fractions, identified 31 bands, with molecular weights varying from 106.2 to 3.9 kDA, In conclusion, the treatment with 250U and 500U of BoNT-A did not modify the biochemical or protein profiles of the seminal plasma of dogs with BPH.
Descrição
Palavras-chave
Cão, Botulismo, Plasma seminal, Boyulinum toxin, Seminal plasma, Dog
Como citar
MOTHEO, Tathiana Ferguson. Avaliação dos parâmetros espermáticos e caracterização do perfil bioquímico do plasma seminal de cães (Canis familiaris – LINNAEUS, 1758) com hiperplasia prostática benigna, tratados com toxina botulínica A. 2009. xvii, 92 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, 2009.