The experimental knowledge on the role of oxidative stress,and beneficial and detrimental effects of plant derived antioxidants in male and female animal reproduction are reviewed in this article.Free radical-induced ...The experimental knowledge on the role of oxidative stress,and beneficial and detrimental effects of plant derived antioxidants in male and female animal reproduction are reviewed in this article.Free radical-induced oxidative stress in animal reproduction causes great loss to livestock industry.Antioxidant therapy has been implicated to be effective in preventing diseases resulted from oxidative stress.Considering the advantages of lower side effects of natural antioxidants than those of synthetic antioxidants,plants or their extracts have been extensively utilized in animals.Although many advances have been gained on application of plant derived antioxidants in alleviating oxidative stress,debatable issues still exist.Because many opposite effects were observed even using plant extracts containing similar bioactive substances in the same animal species.Therefore,plant derived antioxidants,like free radicals,are ＂double-edged swords＂ in animal reproduction,representing that they may exhibit beneficial or detrimental effects in animal reproduction,including spermatogenesis,semen functions,estrous cycles,ovulation,ovary functions,endometrium,embryo development,and pregnancy.Besides dose-dependent manner as an explanation of plant extracts＇ dual function,future studies are needed to investigate the mechanism of double-edged actions of plant derived antioxidants in different animal reproduction systems.展开更多
Background： Estradiol （E2） is required for luteolysis in cows and its injection stimulates prostaglandin F2α （PGF2α） release. The main goal of our study was to investigate the ability of endometrial explants an...Background： Estradiol （E2） is required for luteolysis in cows and its injection stimulates prostaglandin F2α （PGF2α） release. The main goal of our study was to investigate the ability of endometrial explants and cells treated with E2 and the calcium ionophore （CI） A23187 to synthesize PGF2α. Results： Treatment with E2 in vivo resulted in a 48.4% increase of PGF2α production by endometrial explants treated in vitro with A23187. Production of PGF20 was better stimulated with A23187 at concentrations of 10^-6 and 10^-5 mol/L compared with other concentrations used. The concentration of PGF2α for untreated bovine endometrial cell cultures was 33.1 pg/mL, while for cultures treated with E2, A23187, or a combination of E2 and A23187, the PGF2α concentration was 32.5, 92.4 and 145.6 pg/mL, respectively. Conclusions： Treatment with A23187 tended to stimulate PGF20 production. In the presence of E2, A23187 significantly stimulated PGF20 synthesis. It appears that A23187 potentiates the effects of E2 with respect to synthesis of endometrial PGF2α in cattle.展开更多
Animal reproduction and physiology is one of the traditional subjects in biology, and also one of the most rapidly developing fields because it is related to human
基金supported by the Outstanding Youth Program of Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences (DLSYQ12008)the National Natural Science Foundation of China (31201820)
文摘The experimental knowledge on the role of oxidative stress,and beneficial and detrimental effects of plant derived antioxidants in male and female animal reproduction are reviewed in this article.Free radical-induced oxidative stress in animal reproduction causes great loss to livestock industry.Antioxidant therapy has been implicated to be effective in preventing diseases resulted from oxidative stress.Considering the advantages of lower side effects of natural antioxidants than those of synthetic antioxidants,plants or their extracts have been extensively utilized in animals.Although many advances have been gained on application of plant derived antioxidants in alleviating oxidative stress,debatable issues still exist.Because many opposite effects were observed even using plant extracts containing similar bioactive substances in the same animal species.Therefore,plant derived antioxidants,like free radicals,are ＂double-edged swords＂ in animal reproduction,representing that they may exhibit beneficial or detrimental effects in animal reproduction,including spermatogenesis,semen functions,estrous cycles,ovulation,ovary functions,endometrium,embryo development,and pregnancy.Besides dose-dependent manner as an explanation of plant extracts＇ dual function,future studies are needed to investigate the mechanism of double-edged actions of plant derived antioxidants in different animal reproduction systems.
基金funded by Fundao de Amparo à Pesquisa do Estado de So Paulo (FAPESP)
文摘Background： Estradiol （E2） is required for luteolysis in cows and its injection stimulates prostaglandin F2α （PGF2α） release. The main goal of our study was to investigate the ability of endometrial explants and cells treated with E2 and the calcium ionophore （CI） A23187 to synthesize PGF2α. Results： Treatment with E2 in vivo resulted in a 48.4% increase of PGF2α production by endometrial explants treated in vitro with A23187. Production of PGF20 was better stimulated with A23187 at concentrations of 10^-6 and 10^-5 mol/L compared with other concentrations used. The concentration of PGF2α for untreated bovine endometrial cell cultures was 33.1 pg/mL, while for cultures treated with E2, A23187, or a combination of E2 and A23187, the PGF2α concentration was 32.5, 92.4 and 145.6 pg/mL, respectively. Conclusions： Treatment with A23187 tended to stimulate PGF20 production. In the presence of E2, A23187 significantly stimulated PGF20 synthesis. It appears that A23187 potentiates the effects of E2 with respect to synthesis of endometrial PGF2α in cattle.
文摘Animal reproduction and physiology is one of the traditional subjects in biology, and also one of the most rapidly developing fields because it is related to human
