Results 101 to 110 of about 48,631 (292)

Negative biomarker based male fertility evaluation: Sperm phenotypes associated with molecular-level anomalies

Asian Journal of Andrology, 2015
Biomarker-based sperm analysis elevates the treatment of human infertility and ameliorates reproductive performance in livestock. The negative biomarker-based approach focuses on proteins and ligands unique to defective spermatozoa, regardless of their ...
Peter Sutovsky, Mahmoud Aarabi, Antonio Miranda-Vizuete, Richard Oko   +3 more
doaj   +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

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

Sperm Factors and Oocyte Activation: Current Controversies and Considerations. [PDF]

, 2015
The beginning of embryogenesis is preceded by a sequence of events mediated by the release of intracellular calcium in the ooplasm, a multifaceted process known as oocyte activation.
Yeste, Marc, Celine Jones, Coward, Kevin, Jones, Celine, Kevin Coward, Marc Yeste, Amdani, Siti, Siti Nornadhirah Amdani   +7 more
core   +2 more sources

Oocyte–cumulus cell interaction: a key factor in early embryo development

Biological Reviews, EarlyView.
ABSTRACT The evaluation of oocyte competence is a fundamental step in achieving successful outcomes following assisted reproduction techniques (ART). At present, however, conventional oocyte maturation assessment is carried out by morphological observation, which is a subjective method that does not consider molecular features.
Marc Torres‐Garrido, Marc Yeste, Yentel Mateo‐Otero   +2 more
wiley   +1 more source

Aktivasi Oosit Menggunakan Strontium Klorida setelah Injeksi dengan Spermatozoa Domba Hasil Pengeringbekuan (OOCYTE ACTIVATION USING STRONTIUM CHLORIDE FOLLOWING INJECTION OF FREEZE-DRIED RAM SPERMATOZOA)

Jurnal Veteriner, 2013
One of the factors that inhibit the formation of male pronuclei following injection of freeze-dried ramspermatozoa was the absence of artificial activation during oocyte incubation after the injection.
Takdir Saili, Ita Djuwita, Mohamad Agus Setiadi, Srihadi Agungpriyono, Arief Boediono   +4 more
doaj  

Evidence for adaptive explanations of semelparity in animals

Biological Reviews, EarlyView.
ABSTRACT Semelparity, the reproductive strategy of reproducing once, is widespread but uncommon in animals. Classes of models to explain the evolution of semelparity are based either on age structure and mortality schedules – demographic models in which high post‐reproductive mortality risk favours high reproductive effort and semelparity results from ...
Diana O. Fisher, Roberto Salguero‐Gómez   +1 more
wiley   +1 more source

oocyte meiotic maturation [PDF]

, 2005
Fertilization in the female reproductive tract depends on intercellular signaling mechanisms that coordinate sperm presence with oocyte meiotic progression.
Chad Corrigan, Michael A. Miller, Miller, M A, Subramanian, R, Corrigan, C, Rajani Subramanian   +5 more
core   +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

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