Results 121 to 130 of about 17,633 (227)

Altered zygotic gene expression caused by sperm with Tdrd6 variants disrupts early embryonic development

MedComm
The precise mechanisms behind early embryonic arrest due to sperm‐related factors and the most effective strategies are not yet fully understood.
Zhijie Hu, Yuqi Zhang, Renfei Cai, Qiuju Chen, Haiyan Guo, Danjun Li, Weidong Lin, Hongxi He, Haibo Wu, Yali Liu, Bin Li, Qianwen Xi, Hongyuan Gao, Jian Zhang, Qifeng Lyu, Yanping Kuang, Xuefeng Lu   +16 more
doaj   +1 more source

The role of phospholipase Czeta in male fertility as an oocyte activation factor [PDF]

, 2015
زمینه و هدف: در پستانداران، اسپرم پس از ورود به تخمک به هنگام لقاح، یک آبشار سیگنالی را که شامل نوسانات در غلظت کلیسم آزاد سیتوپلاسمی تخمک است، ایجاد می‌کند.
Aghajanpour, Samaneh., Azadi, Leila., Nasr-Esfahani, Mohammadhossein., Tavalaee, Marzieh.   +3 more
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Are physiological oscillations physiological?

The Journal of Physiology, Volume 604, Issue 9, Page 3672-3693, 1 May 2026.
Abstract figure legend Mechanisms and functions of physiological oscillations. Abstract Despite widespread and striking examples of physiological oscillations, their functional role is often unclear. Even glycolysis, the paradigm example of oscillatory biochemistry, has seen questions about its oscillatory function.
Lingyun (Ivy) Xiong, Alan Garfinkel
wiley   +1 more source

Characterization and Computational Engineering of Structural Elements Controlling Gas Permeability in PIP2;1 Aquaporins

Journal of Computational Chemistry, Volume 47, Issue 11, 30 April 2026.
Bulky residues constrict the central pore of WT SoPIP2;1, generating high energy barriers for both O2 and CO2 and preventing gas permeation. ABSTRACT Aquaporins (AQPs) are classical water channels that also conduct small gas molecules such as O2$$ {\mathrm{O}}_2 $$ and CO2$$ {\mathrm{CO}}_2 $$ across the membrane.
Ahmad Raeisi Najafi, Paween Mahinthichaichan, Fraser J. Moss, Ardeschir Vahedi‐Faridi, Walter F. Boron, Emad Tajkhorshid   +5 more
wiley   +1 more source

Early rescue oocyte activation at 5 h post-ICSI is a useful strategy for avoiding unexpected fertilization failure and low fertilization in ICSI cycles

Frontiers in Endocrinology
IntroductionAttempts to artificially activate unfertilized oocytes at 24 h post intracytoplasmic sperm injection (ICSI) have generally resulted in poor outcomes.
Lintao Xue, Shikai Wang, Pingpin Wei, Haifang Liu, Xianbao Mao, Jie Qin, Yaoxuan Li, Xiaohui Zhang, Zhengda Li, Yueyue Huang, Liangshi Chen, Wen Shi, Liling Liu   +12 more
doaj   +1 more source

Development and standardization of a protocol for sperm cryopreservation of two important commercial oyster species [PDF]

, 2015
Dissertação de mestrado, Aquacultura e Pescas, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 2015Aquaculture activities have a huge contribution for the world food production and their development is extremely necessary to answer to the ...
Melo, Francisca Félix de Azeredo Pinto e
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Add-On Technologies That Aim to Improve Oocyte Quality and Embryo Implantation Potential

Medicina
Advancements in assisted reproductive technologies (ARTs) have led to the development of various add-on techniques aimed at improving oocyte quality and enhancing embryo implantation potential.
Nikos Petrogiannis, Maria Filippa, Kalliopi Chatzovoulou, Savvas Petrogiannis, Ioannis Filippas, Grigoris Grimbizis, Efstratios Kolibianakis, Katerina Chatzimeletiou   +7 more
doaj   +1 more source

Binding of radio-iodinated gonadotropin to the ovary of exotic carp (Cyprinus carpio Lin.) [PDF]

, 2000
Heterologous murrel gonadotropic hormone (m-GtH) binds to common carp oocyte plasma membrane and enhances steroid secretion. With increasing concentration of radio-labelled hormone the receptor binding is also found to increase linearly up to a certain ...
Bhattacharya, S., Chakraborty, B.
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Oocyte activation with phospholipase Cζ mRNA induces repetitive intracellular Ca2+ rises and improves the quality of pig embryos after intracytoplasmic sperm injection

The Journal of Reproduction and Development
For the intracytoplasmic sperm injection (ICSI) procedure in pigs, an electrical pulse (EP) has been used as an effective method for oocyte stimulation, but unlike sperm, EP is unable to induce Ca2+ oscillations.
Michiko NAKAI, Shun-ichi SUZUKI, Dai-ichiro FUCHIMOTO, Shoichiro SEMBON, Kazuhiro KIKUCHI   +4 more
doaj   +1 more source

Preservation of Garut Rams Spermatozoon as a Source of Male Germ Plasm [PDF]

, 2004
This study was conducted to examine the quality of ejaculated sperm by Garut rams to be used for artificial insemination (AI) and viability of sperm that were collected from preserved cauda epididymis (4°C up to 12 days) for assisted reproductive ...
BOEDIONO, A. (ARIEF), HERDIS, H. (HERDIS), RIZAL', M. (MUHAMMAD)   +2 more
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