Results 151 to 160 of about 25,545 (268)

An improved method for chromosome preparations from bovine oocytes and zygotes obtained by in vitro maturation and fertilization techniques

, 1998
Matured bovine oocytes and zygotes obtained by in vitro maturation and fertilization techniques (IVM and IVF) were cytogenetically prepared by using an improved method for chromosome preparations. The method, which involves use of trypsinizedhypotonic solution plus a vortex-agitated system and very cold two-step fixation process, contributes to weaken ...
Ocaña Quero, J.M., Ortega Mariscal, M.A., Pinedo Merlín, M., Moreno-Millán, M.   +3 more
openaire   +1 more source

Hyperaldosteronism in Mice Lacking the Distal Polybasic Tract of the γ‐Subunit of the Epithelial Sodium Channel During Sodium Restriction

Acta Physiologica, Volume 242, Issue 6, June 2026.
ABSTRACT Aims The epithelial sodium channel ENaC consists of the subunits α, β, and γ and is activated at an individual channel level by proteolytic processing. Murine γENaC contains a distal polybasic tract 186RKRK mediating proteolytic ENaC activation by serine proteases in vitro.
Daniel Essigke, M. Zaher Kalo, Matthias Wörn, Xia‐Qing Li, Bernhard N. Bohnert, Anja Schork, Andreas L. Birkenfeld, Thomas Ott, Ferruh Artunc   +8 more
wiley   +1 more source

RNA Modifications: Current Understandings and Future Perspectives

MedComm, Volume 7, Issue 5, May 2026.
Types of RNA modification. We have summarized the currently common types of RNA modifications, including ac4C, m6A, m1A, m5C, m3C, m7G, and ψ, and visually characterized their features through structural formulas. The characteristic structures are marked with a background color different from the background color.
Shiyu Xiao, Tingwen Xiang, Chuan Yang, Xiaohua Wang, Gang Huang, Fei Luo, Zhao Xie, Yueqi Chen   +7 more
wiley   +1 more source

Damages of Freezing on the Development of Oocyte and Embryos [PDF]

Majallah-i Dānishgāh-i ’Ulūm-i Pizishkī-i Shahīd Ṣadūqī Yazd
Introduction: To assist save endangered species from extinction and to aid in their care, it is crucial to sustaining their reproductive capacity. The fetus's life and growth processes begin at conception and proceed in accordance with a biological clock'
Pegah Shayegh, Fatemeh Rahmati, Farzaneh Baniasadi, Meisam Jangkhah, Hasan Rajabimaham, Mohammad Reza Ghalamboran, Rouhollah Fathi   +6 more
doaj  

Physiological and Endocrinological approaches in captive breeding of marine finfish [PDF]

, 2007
Reproductive processes are by no means fully impaired in captivity. The gradual and progressive development of the gonads remains, in general, uninhibited upto the final stage of gamete maturation, and it is only at the point of gamete release that ...
Diwan, A D
core  

Folding, misfolding, and regulation of intracellular traffic of G protein‐coupled receptors involved in the hypothalamic–pituitary–gonadal axis

Andrology, Volume 14, Issue 4, Page 978-991, May 2026.
Abstract Background G protein‐coupled receptors are a large and functionally diverse family of membrane receptors involved in a number of biological processes. Like other proteins, G protein‐coupled receptors need to be properly folded in order to traffic to the plasma membrane and interact with agonist.
Alfredo Ulloa‐Aguirre, Ross C. Anderson, Teresa Zariñán, Rubén Gutiérrez‐Sagal, Eduardo Jardón‐Valadez, Claire L. Newton   +5 more
wiley   +1 more source

Oocytes recovered from cows treated with retinol become unviable as blastocysts produced in vitro [PDF]

, 2011
Retinoids have been shown to enhance developmental competence of the oocyte in cattle, sheep and pigs. In this study we investigated whether exogenous retinol stimulates the bovine oocyte during its intrafollicular growth and the time limits of exposure ...
Alonso, Cristina, Duque, Paloma, Díez, Carmen, Facal, Nieves, Fernández, Itziar, Goyache, Félix, Gómez, Enrique, Hidalgo, C.O. (Carlos), Ikeda, S., Prendes, J.M. (J.), Rodríguez, Aida   +10 more
core  

Opening closed inward rectifier potassium channel doors

British Journal of Pharmacology, Volume 183, Issue 10, Page 2197-2218, May 2026.
Inwardly rectifying potassium (KIR) channels are essential regulators of membrane potential in excitable and non‐excitable tissues. Although KIR channels exhibit a biophysical preference for potassium influx due to voltage‐dependent block of outward current by polyamines and Mg2+, under physiological conditions, they predominantly mediate K+ efflux ...
Anna Stary‐Weinzinger, Fabian Kaiser, Marcel A. G. van der Heyden, Saïd Bendahhou   +3 more
wiley   +1 more source

Endocrinology: Nuclear maturity and oocyte morphology after stimulation with highly purified follicle stimulating hormone compared to human menopausal gonadotrophin [PDF]

, 2017
Several studies have shown that high concentrations of luteinizing hormone (LH) in the follicular phase of stimulation can have a negative effect on oocyte quality, pregnancy rate and incidence of miscarriage.
Imthurn, B., Keller, P.J., Macas, E., Rosselli, M.   +3 more
core  

Toward Practical Embryo Genomic Selection in Cattle: An Optimized Workflow Enabling High‐Accuracy Breeding Value Prediction Without Compromising Embryo Survival

The FASEB Journal, Volume 40, Issue 7, 15 April 2026.
A diameter‐guided workflow was established to define the appropriate trophectoderm (TE) biopsy area window for bovine blastocysts, with the aim of balancing embryo viability and genotyping reliability. After TE biopsy, sampled cells were subjected to DNA amplification and genomic evaluation, while the corresponding biopsied embryos were transferred to ...
Jingyu Zhang, Zhize Liu, Hang Shen, Mengmeng Zhao, Jun Teng, Yubing Wang, Guangyao Liu, Boxuan Ye, Zhenni Zhang, Qin Zhang, Jianhui Tian, Lei An, Yinjuan Wang   +12 more
wiley   +1 more source