Results 21 to 30 of about 701,007 (399)

Advances in Oocyte Maturation In Vivo and In Vitro in Mammals

International Journal of Molecular Sciences, 2023
The quality and maturation of an oocyte not only play decisive roles in fertilization and embryo success, but also have long-term impacts on the later growth and development of the fetus. Female fertility declines with age, reflecting a decline in oocyte
Yao Jiang, Yingting He, Xiangchun Pan, Penghao Wang, Xiaolong Yuan, Bin Ma   +5 more
semanticscholar   +1 more source

Challenges and Considerations during In Vitro Production of Porcine Embryos

Cells, 2021
Genetically modified pigs have become valuable tools for generating advances in animal agriculture and human medicine. Importantly, in vitro production and manipulation of embryos is an essential step in the process of creating porcine models.
Paula R. Chen, Bethany K. Redel, Karl C. Kerns, Lee D. Spate, Randall S. Prather   +4 more
doaj   +1 more source

Critical Steps of Plasmodium falciparum Ookinete Maturation [PDF]

, 2020
The egress and fertilization of Plasmodium gametes and development of a motile ookinete are the first crucial steps that mediate the successful transmission of the malaria parasites from humans to the Anopheles vector. However, limited information exists
Alano, P., Costa, G., Levashina, E., Siciliano, G., Suárez-Cortés, P., Valleriani, A.   +5 more
core   +1 more source

Rescue in vitro maturation may increase the pregnancy outcomes among women undergoing intracytoplasmic sperm injection

Frontiers in Endocrinology, 2022
Introduction To investigate whether rescue in vitro maturation (R-IVM) improves the reproductive outcomes among women undergoing intracytoplasmic sperm injection (ICSI) after one oocyte retrieved cycle.
Dan Qin, Hua-hua Jiang, Qing-Yun Yao, Wen Yao, Xiao-qiong Yuan, Yi Wang, T. Deng, Yao-yao Du, X. Ren, Na Guo, Yu-Feng Li   +10 more
semanticscholar   +1 more source

Metformin promotes in vitro maturation of oocytes from aged mice by attenuating mitochondrial oxidative stress via SIRT3-dependent SOD2ac

Frontiers in Cell and Developmental Biology, 2022
Human female fecundity decreases irreversibly as chronological age rises, adversely affecting oocyte quality, consequently worsening pregnancy outcomes and increasing the extent of birth defects.
Yongzhi Cao, Zhao Wang, Changming Zhang, Yuehong Bian, Xin Zhang, Xin Liu, Wendi Chen, Yueran Zhao   +7 more
semanticscholar   +1 more source

Physiological and Functional Roles of Neurotrophin-4 During In Vitro Maturation of Porcine Cumulus–Oocyte Complexes

Frontiers in Cell and Developmental Biology, 2022
Neurotrophin-4 (NT-4), a granulosa cell-derived factor and a member of the neurotrophin family, is known to promote follicular development and oocyte maturation in mammals.
Mirae Kim, Seon-Ung Hwang, J. Yoon, Joohyeong Lee, Eunhye Kim, L. Cai, Hyerin Choi, D. Oh, G. Lee, S. Hyun   +9 more
semanticscholar   +1 more source

Early vessel destabilization mediated by Angiopoietin-2 and subsequent vessel maturation via Angiopoietin-1 induce functional neovasculature after ischemia. [PDF]

, 2013
We assessed whether Angiopoietin-2 (Ang2), a Tie2 ligand and partial antagonist of Angiopoietin-1 (Ang1), is required for early vessel destabilization during postischemic angiogenesis, when combined with vascular growth factors.
Chillo, Omary, Deindl, Elisabeth, Hinkel, Rabea, Kupatt, Christian, Lee, Seungmin, Qin, Di, Trenkwalder, Teresa   +6 more
core   +13 more sources

Effects of the preservation medium and storage duration of domestic cat ovaries on the maturational and developmental competence of oocytes in vitro

The Journal of Reproduction and Development, 2022
We examined the effectiveness of saline, Euro-Collins solution (EC), and ET-Kyoto solution (ET-K) as preservation media for the cold storage of feline ovaries. Ovaries were maintained in these media at 4°C for 24, 48, or 72 h until oocyte retrieval.
Takumi YOSHIDA, Md Emtiaj ALAM, Keisuke HANAFUSA, Yasunori TSUJIMOTO, Masaya TSUKAMOTO, Ryoji KANEGI, Toshio INABA, Kikuya SUGIURA, Shingo HATOYA   +8 more
doaj   +1 more source

Age-Dependent in vitro Maturation Efficacy of Human Oocytes – Is There an Optimal Age?

Frontiers in Cell and Developmental Biology, 2021
In vitro maturation of oocytes from antral follicles seen during tissue harvesting is a fertility preservation technique with potential advantages over ovarian tissue cryopreservation (OTC), as mature frozen and later thawed oocyte used for fertilization
G. Karavani, Peera Wasserzug-Pash, Talya Mordechai-Daniel, D. Bauman, Michael Klutstein, T. Imbar   +5 more
semanticscholar   +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