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Influência da atmosfera gasosa e da fonte protéica sobre o desenvolvimento embrionário in vitro e taxa de prenhez em bovinos
(Universidade Federal de Santa Maria, 2006-05-18)
The embryonic development and pregnancy rates are influenced by
variations in embryo in vitro production (IVP) systems and protocols for bovine
embryos, such as gaseous atmosphere, culture media and the protein supply
adopted ...
Caracterização de um novo modelo de maturação de oócito in vitro e participação do mTOR na ovulação em bovinos
(Universidade Federal de Santa Maria, 2016-02-26)
In the first study, we characterized an in vitro culture system able to delaying meiosis resumption of bovine oocytes. Firstly, we demonstrated that the use of an EGFR inhibitor (AG1478; 5μM) in a culture system with ...
Ácido ascórbico na produção in vitro de embriões bovinos
(Universidade Federal de Santa Maria, 2008-11-17)
In vitro cultured bovine embryos are susceptible to oxidative stress caused by
high oxygen concentration, that contributes to free radicals formation. Therefore,
antioxidant defense systems are needed to neutralize the ...
Citologia aspirativa por agulha fina como método diagnóstico precoce em enfermidades em medicina veterinária
(Universidade Federal de Santa Maria, 2016-04-04)
Fine-needle aspiration cytology is an easy, rapid, low cost, and minimally invasive
technique, consequently contributes to a faster diagnosis leading to a faster decision,
mainly to provide welfare and quality of life ...
Ácidos graxos não esterificados (NEFAs) e beta-hidroxibutirato (BHBA) na regulação da foliculogênese e epigenética das células endometriais
(Universidade Federal de Santa Maria, 2020-02-10)
Dairy cows milk production has increased over the past decades as a result of intense genetic
selection. However, the advances in genetic selection of dairy herds did not come with an
improvement of reproductive parameters. ...
Rotas de sinalização na divergência folicular e luteólise em bovinos
(Universidade Federal de Santa Maria, 2014-09-12)
It is well established that locally produced factors exert pivotal roles during dominant follicle selection, oocyte maturation, ovulation and luteolysis. However, the identification of these factors and pathways involved ...
Regulação epigenética no desenvolvimento embrionário inicial e reprogramação celular na clonagem por transferência nuclear
(Universidade Federal de Santa Maria, 2019-02-13)
Recent studies highlight the role of epigenetic changes during reproductive events, from the
formation of gametes to fertilization and early embryo development. In these processes, a dynamic
epigenetic regulation is ...
Peptídeos natriuréticos e angiotensina-(1-7) durante o processo de ovulação em bovinos
(Universidade Federal de Santa Maria, 2015-02-20)
Ovulation is controlled by a complex and dynamic interaction of factors, including endocrine and vasoactive mechanisms, cellular messengers and activating enzymes. It is well established that locally produced factors exert ...