2018
DOI: 10.1590/1678-4162-9671
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Avaliação in vitro do sêmen congelado de carneiros com diluidor suplementado com miricetina

Abstract: RESUMO O objetivo deste estudo foi avaliar o efeito da suplementação do diluidor de congelação de sêmen ovino com o flavonoide miricetina contra os danos ocasionados aos espermatozoides. Oito pools de sêmen, obtidos de quatro reprodutores ovinos, foram congelados com diferentes concentrações de miricetina (0, 1, 10, 100 e 1000nM). Após o descongelamento, o sêmen foi avaliado quanto à cinética espermática, à integridade das membranas plasmática e acrossomal, ao potencial de membrana mitocondrial, aos níveis de … Show more

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Cited by 5 publications
(4 citation statements)
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“…Studies have demonstrated the effects of myricetin on functional aspects of human (Aquila et al, 2013) and ovine (Arruda et al, 2018) spermatozoa. In the present study, microscopic analysis (CASA) and flow cytometry were performed to evaluate the impact of the addition of various myricetin concentrations on kinematics, plasma and acrosome membrane integrity, mitochondrial membrane potential, intracellular ROS levels, lipid peroxidation and membrane stability of ovine spermatozoa in vitro.…”
Section: Resultsmentioning
confidence: 99%
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“…Studies have demonstrated the effects of myricetin on functional aspects of human (Aquila et al, 2013) and ovine (Arruda et al, 2018) spermatozoa. In the present study, microscopic analysis (CASA) and flow cytometry were performed to evaluate the impact of the addition of various myricetin concentrations on kinematics, plasma and acrosome membrane integrity, mitochondrial membrane potential, intracellular ROS levels, lipid peroxidation and membrane stability of ovine spermatozoa in vitro.…”
Section: Resultsmentioning
confidence: 99%
“…In an experiment conducted by Arruda et al (2018), which evaluated ram semen immediately after thawing, 10 nM of myricetin was found to reduce the percentage of fast cells and mean path velocity (VAP), and 10, 100, and 1000 nM of myricetin increased BCF, with no beneficial effect on any of the other parameters evaluated immediately after thawing. Kinematic differences between the data of Arruda et al (2018) and the results of this study may have occurred because of some modifications in the protocol, such as the preparation of the semen cryopreservation extender, dilution process, time from semen processing to freeze, incubation before the analyses in the computerized system (CASA) and evaluation after the incubation period.…”
Section: Resultsmentioning
confidence: 99%
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“…A geração das espécies reativas ocorre por meio do sequestro de um átomo de hidrogênio do grupo metileno (presente na cadeia de ácidos graxos poli-insaturados). Após o início da reação de oxidação a camada lipídica, o processo torna-se autocatalítico e finaliza quando não houver mais reservas de ácidos graxos e oxigênio(ARRUDA et al, 2018). O principal composto formado ao final deste processo é o aldeído conhecido como malonaldeído.…”
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