Results 61 to 70 of about 7,063 (180)

Artificial Oocyte Activation: Methods and Clinical Efficiency after Intra-Cytoplasmic Sperm Injection

مجله دانشکده پزشکی اصفهان, 2013
Background: Failed fertilization is a rare event occurring after intra-cytoplasmic sperm injection (ICSI). Failure of oocyte activation considered as main reason for failed fertilization. For overcome of failed fertilization, Artificial Oocyte Activation
Mohammad Reza Deemeh, Marzieh Tavalaee, Mohammad Hossein Nasr-Esfahani   +2 more
doaj  

Requirement of Lysosomal Two-Pore Channels for Normal Fertilization and Artificial Oocyte Activation in Mice

Frontiers in Bioscience-Landmark
Background: Lysosomes serve not only in the degradation of cellular components but also as calcium (Ca2+) stores. In this study, we investigated the effects of trans-Ned19, an inhibitor of lysosomal calcium channels known to block two ...
Tadashi Yamazaki, Md Wasim Bari, Satoshi Kishigami   +2 more
doaj   +1 more source

Hyperactivation and Tyrosine Phosphorylation of Cryopreserved Stallion Spermatozoa in Relation to Conventional In Vitro Fertilization Blastocyst Production

Andrology, EarlyView.
ABSTRACT Background Challenges in establishing clinical conventional in vitro fertilization (IVF) in horses include variation in sperm and oocyte quality, which can be affected by mare age. Extended preincubation of stallion spermatozoa has resulted in successful IVF.
Raul A. Gonzalez‐Castro, Carolina C. Porflidt, Alexandra L. Ash, Jacobo S. Rodriguez, Perla D. Fleury, Edward L. Squires, Elaine M. Carnevale   +6 more
wiley   +1 more source

Compromised DNA replication in gut cells underlies sensitivity to genotoxic stress in the tardigrade Hypsibius exemplaris

The FEBS Journal, EarlyView.
DNA damage in the tardigrade Hypsibius exemplaris elicits distinct cellular outcomes depending on replication status. While non‐replicating cells tolerate genotoxic stress, constitutively replicating cells undergo irreversible replication failure upon DNA damage, leading to loss of tissue homeostasis, fat depletion, sterility, and organismal death ...
Gonzalo Quiroga‐Artigas, Pauline Fontanié, Benjamin Lacroix, Maria Dolores Molina, María Moriel‐Carretero   +4 more
wiley   +1 more source

Defects in phospholipase C zeta cause polyspermy and low fertilization after conventional IVF: not just ICSI failure

Asian Journal of Andrology
Phospholipase C zeta (PLCζ) is a key sperm-borne oocyte-activating factor that triggers Ca2+ oscillations and the subsequent block to polyspermy following gamete fusion.
Jian-Fang Che, Hui-Xia Wu, Si-Cong Zeng, Yue-Ren Wu, Jing Dai, De-Hua Cheng, Fei Gong, Guang-Xiu Lu, Ge Lin, Can Dai   +9 more
doaj   +1 more source

Histological characterisation of gonadal sex differentiation in Malabar red snapper (Lutjanus malabaricus) for aquaculture advancement

Journal of Fish Biology, EarlyView.
Abstract The Malabar red snapper (Lutjanus malabaricus) is a high‐value tropical marine species receiving growing attention for aquaculture development in Singapore and Southeast Asia. At present, seed production relies primarily on uncontrolled mass spawning in sea cages, a practice that lacks consistency, biosecurity and control of genetic ...
Bing Liang, Dean R. Jerry, Joyce Koh, Purushothaman Kathiresan, Celestine Terence, Xueyan Shen, Grace Loo, Shubha Vij, Jose A. Domingos   +8 more
wiley   +1 more source

Evaluation of comparison of clinical outcome treated oocyte with ionomycin and strontium chloride in infertile couple with previous failed in vitro fertilization

Majallah-i Dānishgāh-i ’Ulūm-i Pizishkī-i Shahīd Ṣadūqī Yazd, 2019
Introduction: Several factors are involved in failed fertilization following intracytoplasmic sperm injection (ICSI), which could be related to sperm, oocyte factors and/or both.
Marzieh Norozi- Hafshejani, marzieh Tavalaee, mohammad hossein Nasr- Esfahani   +2 more
doaj  

The CaM1‐CBP60b‐MYB77 Transcriptional Cascade Regulates K+ Homeostasis and Salt Tolerance in Barley

Plant Biotechnology Journal, EarlyView.
ABSTRACT Soil salinity is a major abiotic stress that threatens global crop productivity. Calcium (Ca2+) is a pivotal second messenger in plant stress signalling, but how Ca2+ sensors such as calmodulin (CaM) transcriptionally control ion homeostasis and salt tolerance remains largely understood in crops.
Yunfeng Xu, Haoran Sun, Lijun Liu, Qiyu Liang, Ling Shen, Ailing Han, Liangbo Fu, Fengyue Wang, Shanggeng Xie, Jiangyan Xiong, Yishan Tu, Zhengyuan Xu, Kangfeng Cai, Lingzhen Ye, Shengguan Cai, Zhong‐Hua Chen, Dezhi Wu, Guoping Zhang, Qiufang Shen   +18 more
wiley   +1 more source

VPS34 Governs Oocyte Developmental Competence by Regulating Mito/Autophagy: A Novel Insight into the Significance of RAB7 Activity and Its Subcellular Location

Advanced Science
Asynchronous nuclear and cytoplasmic maturation in human oocytes is believed to cause morphological anomalies after controlled ovarian hyperstimulation.
Wenwen Liu, Kehan Wang, Yuting Lin, Lu Wang, Xin Jin, Yuexin Qiu, Wenya Sun, Ling Zhang, Yan Sun, Xiaowei Dou, Shiming Luo, Youqiang Su, Qingyuan Sun, Wenpei Xiang, Feiyang Diao, Jing Li   +15 more
doaj   +1 more source

Management of Azoospermia: A Systematic Approach

The Obstetrician &Gynaecologist, EarlyView.
ABSTRACT Key Content Work‐up of azoospermic men includes a detailed history, physical examination and investigations to find the underlying cause. Causes and management of azoospermia (pre‐testicular, testicular and post‐testicular) with case presentations.
Naimah Raza, Alex Grammatis, Philippa Sangster, Jackson Kirkman‐Brown   +3 more
wiley   +1 more source