Results 11 to 20 of about 53,055 (306)

In vivo induction of oocyte maturation and ovulation in zebrafish. [PDF]

PLoS ONE, 2011
The maturation of fish oocytes is a well-characterized system induced by progestins via non-genomic actions. In a previous study, we demonstrated that diethylstilbestrol (DES), a non-steroidal estrogen, induces fish oocyte maturation via the membrane ...
Toshinobu Tokumoto, Toshiya Yamaguchi, Sanae Ii, Mika Tokumoto   +3 more
doaj   +3 more sources

Induction and inhibition of oocyte maturation by EDCs in zebrafish [PDF]

Reproductive Biology and Endocrinology, 2005
Background Oocyte maturation in lower vertebrates is triggered by maturation-inducing hormone (MIH), which acts on unidentified receptors on the oocyte surface and induces the activation of maturation-promoting factor (MPF) in the oocyte cytoplasm.
Tokumoto Mika, Tokumoto Toshinobu, Nagahama Yoshitaka   +2 more
doaj   +2 more sources

Oocyte Competence Biomarkers Associated With Oocyte Maturation: A Review [PDF]

Frontiers in Cell and Developmental Biology, 2021
Oocyte developmental competence is one of the determining factors that influence the outcomes of an IVF cycle regarding the ability of a female gamete to reach maturation, be fertilized, and uphold an embryonic development up until the blastocyst stage ...
Batara Sirait, Batara Sirait, Budi Wiweko, Budi Wiweko, Budi Wiweko, Ahmad Aulia Jusuf, Dein Iftitah, R. Muharam, R. Muharam, R. Muharam   +9 more
doaj   +2 more sources

Research progress of immature oocyte in vitro maturation [PDF]

Yixue xinzhi zazhi
With the significant decline of China's birth rate, the role of assisted reproductive technology in alleviating low fertility is increasingly significant.
HUANG Zhiyi, DENG Chunlei
doaj   +2 more sources

Effect of estrous cycle stage on oocyte in vitro maturation of domestic cats reared under tropical conditions

Revista Científica, 2023
Oocyte maturation is a critical step for in vitro embryo production. In female cats, findings on the influence of the estrous cycle stage on oocyte quality and maturation are contradictory.
Enmar Monasterio–Alemán, Luis Monasterio–Oquendo, Liset Zambrano–Vivas, Verónica Arboleda–Caldera, Carla Osorio–Melendez, José Aranguren–Méndez, Fernando Perea–Ganchou, Hugo Hernández–Fonseca   +7 more
doaj   +1 more source

In Vitro maturation of oocytes [PDF]

British Medical Bulletin, 2000
Only about 400 of the one million oocytes present at birth will be ovulated, while the rest will die by atresia. The ability to rescue oocytes destined to die and mature them in vitro would provide invaluable information about folliculogenesis and oocyte maturation, and could provide oocytes for infertile women. In vitro maturation (IVM) is challenging
K, Hardy, C S, Wright, S, Franks, R M, Winston   +3 more
openaire   +2 more sources

Twenty-first century oocyte cryopreservation—in vitro maturation of immature oocytes from ovarian tissue cryopreservation in cancer patients: A systematic review

Women's Health, 2022
Objectives: Our review aimed to consolidate the latest update on the application of in vitro maturation among immature oocyte harvest in combination with ovarian tissue cryopreservation known as ovarian tissue oocyte–in vitro maturation.
Ahmad Mohd Faizal, Yodo Sugishita, Yuki Suzuki-Takahashi, Hideyuki Iwahata, Seido Takae, Yuki Horage-Okutsu, Nao Suzuki   +6 more
doaj   +1 more source

Oocyte Maturation and Development [PDF]

F1000Research, 2016
Sexual reproduction is essential for many organisms to propagate themselves. It requires the formation of haploid female and male gametes: oocytes and sperms. These specialized cells are generated through meiosis, a particular type of cell division that produces cells with recombined genomes that differ from their parental origin.
Verlhac, Marie-Hélène, Terret, Marie-Emilie   +1 more
openaire   +2 more sources

Involvement of the serine protease inhibitor, SERPINE2, and the urokinase plasminogen activator in cumulus expansion and oocyte maturation. [PDF]

PLoS ONE, 2013
The serpin peptidase inhibitor, clade E, member 2 (SERPINE2) inhibits urokinase-type plasminogen activator (PLAU) and tissue-type plasminogen activator.
Chung-Hao Lu, Robert Kuo-Kuang Lee, Yuh-Ming Hwu, Ming-Huei Lin, Ling-Yu Yeh, Ying-Jie Chen, Shau-Ping Lin, Sheng-Hsiang Li   +7 more
doaj   +1 more source

The role of sonic hedgehog signaling pathway in in vitro oocyte maturation

Journal of Animal Reproduction and Biotechnology, 2021
In vitro maturation (IVM) of oocytes is the procedure where the immature oocytes are cultivated in a laboratory until they are mature. Since IVM oocytes generally have low developmental competence as compared to those matured in vivo, development of an ...
Sanghoon Lee, Jongki Cho
doaj   +1 more source