Efeito do tratamento com plasma rico em plaquetas em éguas resistentes e susceptíveis à endometrite persistente após inseminação artificial
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Data
2013-01-24
Autores
Reghini, Maria Fernanda Svizzero [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
A endometrite persistente pós-cobertura (EPPC) é uma das principais causas da redução de fertilidade em éguas. Recentes estudos têm demonstrado a importância da imunomodulação da inflamação após a cobertura. O objetivo deste trabalho foi verificar o estímulo do sêmen na resposta inflamatória uterina de éguas resistentes e susceptíveis à endometrite após a inseminação artificial (IA) e propor um novo tratamento a fim de debelar a resposta inflamatória uterina exacerbada, com o uso do plasma rico em plaquetas (PRP), que vem sendo muito utilizado devido à sua ação anti-inflamatória. Foram selecionadas 15 éguas resistentes e 8 susceptíveis à EPPC com base nos seus índices reprodutivos e exames ultrassonográficos e citológicos. A concentração de neutrófilos e de óxido nítrico (ON) no fluido uterino, a citologia exfoliativa uterina e o acúmulo de fluido uterino verificado no exame ultrassonográfico foram analisados nos dois grupos de animais (1) 24 horas antes da IA e (2) 24 horas após a IA com sêmen fresco. No primeiro experimento não houve intervenção medicamentosa, e no segundo as éguas foram tratadas com 20 mL de PRP infundido no útero 4 horas após a IA. As dosagens de ON foram realizadas por reação colorimétrica de Griess em espectrofotômetro, os neutrófilos na secreção uterina foram quantificados com o uso da câmara de Neubauer e a leitura das amostras de citologia foi feita por microscopia óptica utilizando imersão, considerando a porcentagem de neutrófilos/100 células de forma aleatória. Os resultados demonstraram que o sêmen estimula uma resposta inflamatória exacerbada no ambiente uterino das éguas susceptíveis, e que o tratamento local com PRP foi clinicamente efetivo na redução da inflamação uterina nas éguas susceptíveis à endometrite após a IA, observado por meio da redução...
Post breeding endometritis (PBE) is one of the major causes of fertility reduction in mares. Recent reports have been demonstrating the importance of immunomodulation of inflammation after mating. The aim of this study was to verify semen’s stimulus on inflammatory response in mares resistant and susceptible to PBE, and to propose a new treatment to quell the exacerbated uterine inflammatory response against semen, using platelet rich plasma (PRP), which has been widely used due to its anti-inflammatory properties. 15 mares susceptible to PBE and 8 mares resistant to PBE were selected based on their reproductive index, ultrasonographic and cytological examination. The concentration of neutrophils and nitric oxide (NO) in the uterine fluid, exfoliative cytology of the uterus and uterine fluid accumulation observed by ultrasonography were analyzed in both group of animals (1) 24 hours before artificial insemination (AI) and (2) 24 hours after AI with fresh semen. In the first cycle, there was no drug intervention, and in the second cycle mares were treated with 20 mL of platelet rich plasma, infused in uterus 4 hours after AI. NO dosage were performed by colorimetric reaction of Griess with spectrophotometer, neutrophils in uterine fluid were quantified by the use of Neubauer chamber and the lecture of endometrial cytology samples were analyzed by optical microscopy using immersion, considering the percentage of neutrophils/100 cells in an alleatory form. The results showed that semen can stimulate a major inflammatory response inside the uterine environment in susceptible mares, and that the local treatment with PRP was clinically effective in reduction of inflammation on mares susceptible to PBE, by the reduction of uterine fluid examined by ultrasonography, decrease in percentual of... (Complete abstract click electronic access below)
Post breeding endometritis (PBE) is one of the major causes of fertility reduction in mares. Recent reports have been demonstrating the importance of immunomodulation of inflammation after mating. The aim of this study was to verify semen’s stimulus on inflammatory response in mares resistant and susceptible to PBE, and to propose a new treatment to quell the exacerbated uterine inflammatory response against semen, using platelet rich plasma (PRP), which has been widely used due to its anti-inflammatory properties. 15 mares susceptible to PBE and 8 mares resistant to PBE were selected based on their reproductive index, ultrasonographic and cytological examination. The concentration of neutrophils and nitric oxide (NO) in the uterine fluid, exfoliative cytology of the uterus and uterine fluid accumulation observed by ultrasonography were analyzed in both group of animals (1) 24 hours before artificial insemination (AI) and (2) 24 hours after AI with fresh semen. In the first cycle, there was no drug intervention, and in the second cycle mares were treated with 20 mL of platelet rich plasma, infused in uterus 4 hours after AI. NO dosage were performed by colorimetric reaction of Griess with spectrophotometer, neutrophils in uterine fluid were quantified by the use of Neubauer chamber and the lecture of endometrial cytology samples were analyzed by optical microscopy using immersion, considering the percentage of neutrophils/100 cells in an alleatory form. The results showed that semen can stimulate a major inflammatory response inside the uterine environment in susceptible mares, and that the local treatment with PRP was clinically effective in reduction of inflammation on mares susceptible to PBE, by the reduction of uterine fluid examined by ultrasonography, decrease in percentual of... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Egua - Doenças, Endometrio - Inflamação - Tratamento, Semen, Plasma sanguineo, Inseminação artificial, Endometrium - Inflammation, Horses
Como citar
REGHINI, Maria Fernanda Svizzero. Efeito do tratamento com plasma rico em plaquetas em éguas resistentes e susceptíveis à endometrite persistente após inseminação artificial. 2013. 104 f. Dissertação (mestrado) - Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Medicina Veterinária e Zootecnia, 2013.