Results 61 to 70 of about 14,154 (183)

Epigallocatechin Gallate From Tea Delays Oocyte Aging After Ovulation in Mice

Food Science &Nutrition, Volume 14, Issue 9, September 2026.
In this study, we find that EGCG delays post‐ovulatory oocyte aging and improves the quality of aged oocytes. EGCG may reduce ROS levels in aged oocytes by the NRF2‐KEAP1 pathway. The embryo developmental potential of aged oocytes is also increased by EGCG. ABSTRACT In clinic, once the ovulated oocytes cannot be fertilized timely, they begin to undergo
Jing Lin, Hua‐Chao Gao, Li‐Jun Li, Miao Hu, Li‐Fan Guo, Hong‐Yan Guo, Xiao‐Wen Jin, Peng Xu, Zhao‐Jia Ge, Lei Zhao   +9 more
wiley   +1 more source

Binding of Sperm to the Zona Pellucida Mediated by Sperm Carbohydrate-Binding Proteins is not Species-Specific in Vitro between Pigs and Cattle

Biomolecules, 2013
Carbohydrates are candidates for the basis of species-selective interaction of gametes during mammalian fertilization. In this study, we sought to clarify the roles of sugar residues in the species-selective, sperm–oocyte interaction in pigs and cattle ...
Minoru Nakano, Satoshi Akagi, Masaya Geshi, Kazunori Toma, Reiko Sato, Reiichiro Suzuki, Saeko Kanai-Kitayama, Yasuomi Uchida, Kazuhiro Kikuchi, Kazuya Takahashi, Naoto Yonezawa   +10 more
doaj   +1 more source

TSG From Polygonum multiflorum Thunb. Attenuates Experimental Premature Ovarian Insufficiency in Association With Reduced ZBP1/PANoptosis Signaling

Food Science &Nutrition, Volume 14, Issue 9, September 2026.
This study shows that TSG, the major bioactive constituent of Polygonum multiflorum Thunb., ameliorates POI in association with suppression of ZBP1‐driven PANoptosis. In a POI rat model, TSG restored estrous cyclicity, improved hormone profiles, and preserved follicular reserve.
Jinhong Li, Tiao Xie, Chang Lin, Danhong Peng, Qin Shi, Can Zhu   +5 more
wiley   +1 more source

Oocytes with a dark zona pellucida demonstrate lower fertilization, implantation and clinical pregnancy rates in IVF/ICSI cycles.

PLoS ONE, 2014
The morphological assessment of oocytes is important for embryologists to identify and select MII oocytes in IVF/ICSI cycles. Dysmorphism of oocytes decreases viability and the developmental potential of oocytes as well as the clinical pregnancy rate ...
Wei Shi, Bo Xu, Li-Min Wu, Ren-Tao Jin, Hong-Bing Luan, Li-Hua Luo, Qing Zhu, Lars Johansson, Yu-Sheng Liu, Xian-Hong Tong   +9 more
doaj   +1 more source

Ultrastructure of Vitellogenic Ovarian Follicles and Morphogenesis of the Oocyte Envelope in the Eurasian Ruffe (Gymnocephalus cernua Linnaeus 1758) (Teleostei, Perciformes)

Journal of Morphology, Volume 287, Issue 9, September 2026.
Ruffe's vitellogenic ovarian follicles consists of a single oocyte surrounded by follicular cells, a basal lamina, and thecal cells. The oocytes are polarized and covered by a primary envelope. The follicular cells diversify into micropylar and mainbody cells. The latter have dark and bright cytoplasms.
Monika Żelazowska, Roman Kujawa
wiley   +1 more source

Fish Sperm Subpopulations Detection, Separation, and Application: Current State and Trends

Reviews in Aquaculture, Volume 18, Issue 4, September 2026.
Modern advances in sperm biology highlight the necessity of recognising intra‐ejaculate heterogeneity as a central concept for advancing both the fundamental understanding of fertilisation processes and the development of artificial reproduction techniques in fishes. ABSTRACT Sperm subpopulations represent a fundamental manifestation of intra‐ejaculate
Viktoriya Dzyuba, William V. Holt, Borys Dzyuba   +2 more
wiley   +1 more source

Pregnancy Outcomes Following Artificial Insemination and Embryo Transfer in Dairy Cows—Expectations vs. Reality

Reproduction in Domestic Animals, Volume 61, Issue S2, September 2026.
ABSTRACT Bovine embryo transfer (ET) has been a consistently growing market worldwide with in vitro produced (IVP) embryos now far outnumbering those produced by traditional superovulation. Because transfer of a viable blastocyst‐stage embryo to the uterus bypasses many of the potential biological causes of early pregnancy failure associated with ...
Ana Clara Canto Souza, Pat Lonergan
wiley   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, Volume 111, Issue 9, Page 4015-4040, 1 September 2026.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

The embryological characteristics and clinical outcomes of oocytes with indented zona pellucida

Journal of Obstetrics and Gynaecology
Background Our study aimed to investigate the embryological characteristics and clinical outcomes of oocytes with indented zona pellucida (iZP).Methods Cases with all oocytes containing iZP were compared with subjects whose oocytes presented ...
Jie Lin, Lu Fang, Lv Yao, Haichao Wang, Hongyan Lan, Yinli Zhang, Xiaomei Tong   +6 more
doaj   +1 more source

Characterization of Ovarian Cell Types and Molecular Signatures in Mauremys reevesii Using Single‐Cell Sequencing

The FASEB Journal, Volume 40, Issue 16, 31 August 2026.
This study employed single‐cell transcriptomics to identify six major cell types in the Mauremys reevesii ovary. Except for an unknown cell group, five cell types, including oocytes, granulosa cells, fibroblasts, immune cells, and endothelial cells, were characterized with specific marker genes.
Kaiqi Yuan, Xin Niu, Yue Yuan, Jiale Zhou, Meiling Hong, Li Ding   +5 more
wiley   +1 more source