Ozonioterapia, PRP, fitoterapia, misoprostol e imunomodulação: Novas abordagens terapêuticas para a solução de velhos problemas / Ozone therapy, PRP, phytotherapy, misoprostol and immunomodulation: New therapeutic approaches to solving old problems

A resistência aos antimicrobianos representa uma ameaça sanitária global crescente, que deve ser abordada com urgência na saúde pública, na produção animal, agrícola e no meio ambiente. Essa circunstância põe em risco a eficiência do tratamento e diminui a eficácia contra infecções causadas pelos mais diversos agentes etiológicos, resultando em enfermidades mais prolongadas afetando diretamente os índices de fertilidade. Dessa forma, o objetivo dessa revisão foi abordar diferentes formas terapêuticas para sub/infertilidade em equinos, com o intuito de minimizar os problemas acarretados pelo uso indiscriminado de fármacos, relatando novas terapias alternativas, tais como ozonioterapia, plasma rico em plaquetas, uso de prostaglandina E1 e imunomoduladores na tentativa de solucionar velhos problemas.(AU)

Antimicrobial resistance represents a growing global health threat that must be urgently addressed in public health, animal production, agriculture and the environment. This circumstance jeopardizes the efficiency of the treatment and decreases the effectiveness against infections caused by the most diverse etiological agents, resulting in more prolonged illnesses, directly affecting fertility rates. Thus, the objective of this review was to address different therapeutic forms for sub/infertility in horses, with the aim of minimizing the problems caused by the indiscriminate use of drugs, reporting new alternative therapies, such as ozone therapy, platelet-rich plasma, use of prostaglandin E1 and immunomodulators in an attempt to solve old problems.(AU)

Diluente quimicamente definido e antioxidantes polifenois na criopreservação de sêmen ovino / Chemically defined diluter and polyphenolic antioxidants in the cryopreservation of sheep semen

The objective of this study was to elaborate chemically defined extender based on casein, added with polyphenolic antioxidants, for the freezing of semen from ram breeders. To evaluate Tris-casein (5% glycerol), plus polyphenols, four semen pools from three rams sires were frozen (0µM; 10µM resveratrol; 5µM quercetin; 25µM catechin; 25µM catechin + 10µM resveratrol; 25µM catechin + 5µM quercetin; 10 µM resveratrol + 5µM quercetin; 25µM catechin + 10µM resveratrol + 5µM quercetin). After thawing, the samples were evaluated for sperm kinetics, plasma and acrosomal membrane integrity and mitochondrial membrane potential. There was no significant difference (p≥0.05) between the control group and the treatments for any of the evaluated parameters. However, it can be seen that the Tris-casein extender was efficient in cryopreserving ram semen. It is concluded that the Tris-casein extender can be used for freezing ram semen.

Efeito da adição de nanopartículas de Óxido de Zinco ao diluente de congelação do sêmen ovino / Effect of adding zinc oxide nanoparticles to the freezing extender of ram semen

The aim of this study was to evaluate the effect of adding zinc oxide nanoparticles to the ram semen cryopreservation diluter. Semen pools (n=6), from three Santa Inês breeders, were diluted in Tris-yolk (5% glycerol), supplemented with zinc oxide nanoparticles (0, 25, 75 and 150μg/mL) at a concentration of 200x10 6 sperm/mL. The samples were frozen in an automated system and stored in liquid nitrogen (-196 °C). At the timeof analysis, the semen samples were thawed (37 °C/30s) and evaluated for sperm kinetics, plasma and acrosomal membrane integrity and mitochondrial membrane potential. There was no significant difference (p>0.05) between the experimental groups in the parameters of kinetics, plasma membrane and acrosome integrity. As for the potential of mitochondrial membrane, all treated groups were significantly (p≤0.05) larger than the control. It was concluded that the zinc oxide nanoparticles increase the mitochondrial membrane potential of ram sperm submitted to the freezing/thawing process.

Diluente quimicamente definido e antioxidantes polifenois na criopreservação de sêmen ovino / Chemically defined diluter and polyphenolic antioxidants in the cryopreservation of sheep semen

The objective of this study was to elaborate chemically defined extender based on casein, added with polyphenolic antioxidants, for the freezing of semen from ram breeders. To evaluate Tris-casein (5% glycerol), plus polyphenols, four semen pools from three rams sires were frozen (0µM; 10µM resveratrol; 5µM quercetin; 25µM catechin; 25µM catechin + 10µM resveratrol; 25µM catechin + 5µM quercetin; 10 µM resveratrol + 5µM quercetin; 25µM catechin + 10µM resveratrol + 5µM quercetin). After thawing, the samples were evaluated for sperm kinetics, plasma and acrosomal membrane integrity and mitochondrial membrane potential. There was no significant difference (p≥0.05) between the control group and the treatments for any of the evaluated parameters. However, it can be seen that the Tris-casein extender was efficient in cryopreserving ram semen. It is concluded that the Tris-casein extender can be used for freezing ram semen.(AU)

Efeito da adição de nanopartículas de Óxido de Zinco ao diluente de congelação do sêmen ovino / Effect of adding zinc oxide nanoparticles to the freezing extender of ram semen

The aim of this study was to evaluate the effect of adding zinc oxide nanoparticles to the ram semen cryopreservation diluter. Semen pools (n=6), from three Santa Inês breeders, were diluted in Tris-yolk (5% glycerol), supplemented with zinc oxide nanoparticles (0, 25, 75 and 150μg/mL) at a concentration of 200x10 6 sperm/mL. The samples were frozen in an automated system and stored in liquid nitrogen (-196 °C). At the timeof analysis, the semen samples were thawed (37 °C/30s) and evaluated for sperm kinetics, plasma and acrosomal membrane integrity and mitochondrial membrane potential. There was no significant difference (p>0.05) between the experimental groups in the parameters of kinetics, plasma membrane and acrosome integrity. As for the potential of mitochondrial membrane, all treated groups were significantly (p≤0.05) larger than the control. It was concluded that the zinc oxide nanoparticles increase the mitochondrial membrane potential of ram sperm submitted to the freezing/thawing process.(AU)