Results 111 to 120 of about 79,883 (298)

cAMP Pulsing of Denuded Mouse Oocytes Increases Meiotic Resumption Via Activation of AMP-activated Protein Kinase [PDF]

, 2009
cAMP plays a critical role in the control of oocyte maturation, as a high level of cAMP maintains oocyte arrest at the first meiotic prophase. Yet this study shows that pulsing meiotically arrested denuded oocytes (DO) with cAMP induces oocyte maturation
Chen, Jing, Chi, Maggie M., Downs, Stephen, Moley, Kelle H.   +3 more
core   +2 more sources

Equine models in translational medicine: A comparative approach to human health

Animal Models and Experimental Medicine, EarlyView.
This diagram summarizes and contrasts rodent and equine models, outlining their strengths, limitations, and applications. Horses offer naturally occurring diseases, genetic and physiological similarities to humans, and suitability for longitudinal and clinical‐scale studies.
Shayan Boozarjomehri Amnieh, Katarzyna Ropka‐Molik   +1 more
wiley   +1 more source

AMPK Suppression Due to Obesity Drives Oocyte mtDNA Heteroplasmy via ATF5‐POLG Axis

Advanced Science
Due to the exclusive maternal transmission, oocyte mitochondrial dysfunction reduces fertility rates, affects embryonic development, and programs offspring to metabolic diseases.
Yanting Chen, Guiling Ma, Yang Gai, Qiyuan Yang, Xiangdong Liu, Jeanene M. deAvila, Shengyong Mao, Mei‐Jun Zhu, Min Du   +8 more
doaj   +1 more source

Pronuclear formation by ICSI using chemically activated ovine oocytes and zona pellucida bound sperm

Journal of Animal Science and Biotechnology, 2016
Background In order to improve ICSI, appropiate sperm selection and oocyte activation is necessary. The objective of the present study was to determine the efficiency of fertilization using ICSI with chemically activated ovine oocytes and sperm selected ...
J. E. Hernández-Pichardo, Y. Ducolomb, S. Romo, M. E. Kjelland, R. Fierro, F. Casillas, M. Betancourt   +6 more
doaj   +1 more source

A fluorophore attached to nicotinic acetylcholine receptor beta M2 detects productive binding of agonist to the alpha delta site [PDF]

, 2004
To study conformational transitions at the muscle nicotinic acetylcholine (ACh) receptor (nAChR), a rhodamine fluorophore was tethered to a Cys side chain introduced at the beta-19' position in the M2 region of the nAChR expressed in Xenopus oocytes ...
Auyeung, Vincent C., Bezanilla, Francisco, Chanda, Baron, Dahan, David S., Dibas, Mohammed I., Dougherty, Dennis A., Lester, Henry A., Petersson, E. James   +7 more
core  

Gonadal development in scorpion mud‐turtles, Kinosternon scorpioides, in a controlled environment

The Anatomical Record, EarlyView.
Stage 20 was identified as the critical point for gonadal differentiation in Kinosternon scorpioides, providing key insights into sex determination. These findings enhance conservation strategies by supporting reproductive management and population viability in both in situ and ex situ programs. Abstract Research on gonadal development including sexual
Brenda Braga, Verônica Oliveira‐Bahia, Maria Auxiliadora Ferreira, José Ribamar Felipe Marques, Diva Araújo Guimarães   +4 more
wiley   +1 more source

Histological Characterization and Comparative Transcriptomic Analysis of Gonads During Early Sex Differentiation in the Northern Snakehead (Channa argus)

Animal Research and One Health, EarlyView.
This study delineates the early sex differentiation timeline in the northern snakehead (Channa argus). These findings provide a foundation for future sex‐control breeding in this economically important species. ABSTRACT The northern snakehead (Channa argus) is an economically important aquaculture species in China.
Chaonan Sun, Donglei Sun, Haishen Wen, Xin Qi, Chao Li, Xiaoyan Zhang, Yun Li   +6 more
wiley   +1 more source

Probing the role of the cation–π interaction in the binding sites of GPCRs using unnatural amino acids [PDF]

, 2009
We describe a general application of the nonsense suppression methodology for unnatural amino acid incorporation to probe drug–receptor interactions in functional G protein-coupled receptors (GPCRs), evaluating the binding sites of both the M2 muscarinic
Ballesteros, Cho, D. A. Dougherty, Dougherty, Dougherty, Dougherty, Doupnik, Gallivan, H. A. Lester, Hibert, Hopkins, Huang, Huang, K. S. Bower, Klabunde, Kofuji, Krapivinsky, Lagerstrom, Lu, Lu, M. M. Torrice, Ma, Mark, Nemeth, Nowak, Palczewski, Rasmussen, Schwartz, Warne, Xiu, Zacharias, Zhong   +31 more
core   +3 more sources

Follicle Stimulating Hormone in Cattle Breeding: Fundamentals, Innovations, and Scope

Animal Research and One Health, EarlyView.
FSH is crucial in cattle reproduction, with exogenous administration enhancing breeding and embryo production. Recombinant FSH offers advantages over pituitary‐extracted variants, including fewer injections, reduced stress, and safer production. These innovations improve breeding efficiency, optimize reproductive outcomes, and contribute to sustainable
Muhammad Shahzad, Hubdar Ali Kolachi, Jesse Oluwaseun Ayantoye, Xiaomeng Zhang, Muhammad Usman Mehmood, Rajilan Hilali Shanga, Pengcheng Wan, Xueming Zhao   +7 more
wiley   +1 more source

Endosomal-lysosomal organellar assembly (ELYSA) structures coordinate lysosomal degradation systems through mammalian oocyte-to-embryo transition

eLife
Mouse oocytes undergo drastic changes in organellar composition and their activities during maturation from the germinal vesicle (GV) to metaphase II (MII) stage.
Yuhkoh Satouh, Takaki Tatebe, Isei Tanida, Junji Yamaguchi, Yasuo Uchiyama, Ken Sato   +5 more
doaj   +1 more source