Results 21 to 30 of about 180,767 (311)

Apoptosis in mouse fetal and neonatal oocytes during meiotic prophase one [PDF]

, 2007
Background The vast majority of oocytes formed in the fetal ovary do not survive beyond birth. Possible reasons for their loss include the elimination of non-viable genetic constitutions arising through meiosis, however, the ...
Geraldine M Hartshorne, Gutierrez , Carlos G., Ghafari , Fataneh, Fataneh Ghafari, Carlos G Gutierrez, Hartshorne, Geraldine M.   +5 more
core   +1 more source

Localisation of RNAs into the germ plasm of vitellogenic xenopus oocytes [PDF]

, 2013
We have studied the localisation of mRNAs in full-grown Xenopus laevis oocytes by injecting fluorescent RNAs, followed by confocal microscopy of the oocyte cortex.
Nijjar, Sarbjit, Woodland, Hugh R., Sarbjit Nijjar, Nijjar Sarbjit, Woodland Hugh R., Hugh R Woodland   +5 more
core   +2 more sources

Equol: A Microbiota Metabolite Able to Alleviate the Negative Effects of Zearalenone during In Vitro Culture of Ovine Preantral Follicles

Toxins, 2019
The impact of zearalenone (ZEN) on female reproduction remains an issue, since its effects may differ among exposed cell types. Besides the use of decontaminants in animal diet, other approaches should be considered to minimise ZEN effects after exposure.
Talyne Emilia Santos Silva, Danielle Cristina Calado de Brito, Naiza Arcângelo Ribeiro de Sá, Renato Felix da Silva, Anna Clara Accioly Ferreira, José Ytalo Gomes da Silva, Maria Izabel Florindo Guedes, Ana Paula Ribeiro Rodrigues, Regiane Rodrigues dos Santos, José Ricardo de Figueiredo   +9 more
doaj   +1 more source

Genome-wide methylation profile of mitochondrial DNA across bovine preimplantation development

Epigenetics, 2023
This study characterized variations in the methylation profile of mitochondrial DNA (mtDNA) during initial bovine embryo development and correlated the presence of methylation with mtDNA transcription.
Camila Bruna de Lima, Hélène Martin, Marcella Pecora Milazzotto, Marc-André Sirard   +3 more
doaj   +1 more source

Immunolocalization for glucocorticoid receptor and effect of cortisol on in vitro development of preantral follicles

Veterinary and Animal Science, 2019
The aim of this study was to evaluate the immunolocalization for glucocorticoid receptor (NR3C1) in goat ovarian follicles and the effect of cortisol on in vitro development of preantral follicles.
Julian T. Pontes, Caroline Maside, Laritza F. Lima, Deborah M. Magalhães-Padilha, Rodrigo T. Padilha, Maria Helena T. Matos, José R. Figueiredo, Cláudio C. Campello   +7 more
doaj   +1 more source

DNA double strand breaks but not interstrand crosslinks prevent progress through meiosis in fully grown mouse oocytes [PDF]

, 2012
There is some interest in how mammalian oocytes respond to different types of DNA damage because of the increasing expectation of fertility preservation in women undergoing chemotherapy.
Jones, Keith T, Yuen, Wai Shan, Merriman, J., Keith T Jones, Moira K O'Bryan, Yuen, WS, Yuen, W., O'Bryan Moira K., Jones, KT, Yuen Wai Shan, Merriman Julie A., Jones, K., Merriman, Julie A, Merriman, JA, O'Bryan, MK, Wai Shan Yuen, O'Bryan, Moira K, O'Bryan, M., Julie A Merriman, Jones Keith T   +19 more
core   +1 more source

Altered germline cyst formation and oogenesis in Tex14 mutant mice

Biology Open, 2021
During oocyte differentiation in mouse fetal ovaries, sister germ cells are connected by intercellular bridges, forming germline cysts. Within the cyst, primary oocytes form via gaining cytoplasm and organelles from sister germ cells through germ cell ...
Kanako Ikami, Nafisa Nuzhat, Haley Abbott, Ronald Pandoy, Lauren Haky, Allan C. Spradling, Heather Tanner, Lei Lei   +7 more
doaj   +1 more source

Pregnancy outcome of assisted reproductive technology cycle in patients with hypogonadotropic hypogonadism

Journal of Human Reproductive Sciences, 2015
CONTEXT: Ovulation induction in patients with hypogonadotropic hypogonadism (HH) is a challenge to the treating physician. The threshold for ovarian response in HH may differ substantially from that of normal patients.
Monna Pandurangi, M Tamizharasi, N Sanjeeva Reddy   +2 more
doaj   +1 more source

Assessment of different methods of bovine oocytes collection, maturation and Invitro fertilization of abattoir specimens [PDF]

Iraqi Journal of Veterinary Sciences, 2017
The aim of this study is designed to evaluate the best methods for cow oocytes collection from abattoir specimens which is the cheapest, easily obtained and bulky number. Forty five fresh cow genitalia specimens and testicle were collected directly after
W.M. Saleh
doaj   +1 more source

Macromolecules Influence Cellular Competence and Expression Level of IGFs Genes in Bovine Oocytes In Vitro

Animals, 2022
In vitro maturation (IVM) of mammalian oocytes, which influences subsequent in vitro development of embryos, is affected by the macromolecule content in culture media for the success of oocyte maturation competence, in which the cytoplasmic and nuclear ...
Uğur Şen, Emre Şirin, Hasan Önder, Selçuk Özyürek, Magdalena Kolenda, Beata Sitkowska   +5 more
doaj   +1 more source