Results 41 to 50 of about 133,635 (289)

Spermatozoa: A Historical Perspective.

International journal of fertility & sterility, 2018
ABSTRACT: The 100,000th scientific article on the subject of spermatozoa was recently published. Numerous studies evaluated the characteristics of this important cell that led to tremendous discoveries. Since its first observation and description in 1677, many important characteristics have been described regarding this highly fascinating gamete.
Puerta Suárez, Jenniffer, Cardona Maya, Walter Darío, Du Plessis, Stefan S.   +2 more
openaire   +5 more sources

CD33 as a leukocyte-associated marker expressed on human spermatozoa

BMC Research Notes, 2023
Objective Sialic acid-binding immunoglobulin-type lectins (Siglecs) are commonly present on immune cells and often mediate cell-to-cell interactions and signaling. Studies have shown the presence of Siglecs 1, 2, 5, 6, 10 and 14 on human spermatozoa.
Nasrin Sereshki, Mitra Rafiee, Razieh Alipour, Kourosh Rahimyan, David Wilkinson   +4 more
doaj   +1 more source

The Effect of Cryopreservation on Cytochrome Oxidase1 (CO1) Gene and the Relationship with Spermatozoa Motility of Albino Pangasius catfish (Pangasionodon hypophthalmus)

Hayati Journal of Biosciences, 2023
Cryopreservation is a technique for storing cells and tissues at very low temperatures for the possible usage of the stored cells and tissues throughout the year.
Uswatun Hasanah, Abinawanto, Alimuddin, Arief Boediono, Eni Kusrini   +4 more
doaj   +1 more source

Fertilization capacity with rainbow trout DNA-damaged sperm and embryo developmental success [PDF]

, 2010
Mammalian spermatozoa undergo a strong selection process along the female tract to guarantee fertilization by good quality cells, but risks of fertilization with DNA-damaged spermatozoa have been reported.
Ahmadi, Andrabi, Barroso, Baumber, Beirao, Cabrita, Evenson, Flajshans, Fortier, Hakem, Hales, Holt, Hu, Irvine, J Beirão, Jalabert, Jaroudi, Lee, Li, Liao, M P Herráez, Maluszynska, Matsuda, S Martínez-Páramo, S Pérez-Cerezales, Satake, Schulte, Singh, Sun, Tam, Tarin, Yeates   +31 more
core   +1 more source

Chronic Hypoxia Disrupts Spermatogenesis Through ASXL2–EZH2–Mediated Microtubule Destabilization

Advanced Science, EarlyView.
This study reveals the mechanism by which chronic hypoxia impairs spermatogenesis via the ASXL2–EZH2 axis, hindering the transition of spermatids from round to elongated forms. Key findings reveal that under hypoxic conditions, downregulated ASXL2 expression reduces EZH2 binding to the CEP162 promoter, leading to decreased H3K27me3 modification and ...
Jun Yin, Mengjie Zhang, Wenying Liu, Wenlong Shen, Debao Li, Hongming Miao, Fang Deng, Gang Zhang, Yi Tian, Yi Zhang, Zhihu Zhao, Bing Ni   +11 more
wiley   +1 more source

Addition of Cryoprotectant DMSO Reduces Damage to Spermatozoa of Yellow Catfish (Pelteobagrus fulvidraco) during Cryopreservation: Ultrastructural Damage, Oxidative Damage and DNA Damage

Animals
Spermatozoa cryopreservation protocols have been established for yellow catfish (Pelteobagrus fulvidraco), but cryopreservation can still cause cellular damage and affect spermatozoa viability and fertility.
Yuxin Zhang, Dongqing Liu, Qinghua Wang, Qingxin Ruan, Sijie Hua, Weiwei Zhang, Sen Yang, Zining Meng   +7 more
doaj   +1 more source

In Vitro Fertility of Post-thawed Epididymal Ram Spermatozoa After Storage at 5 °C Before Cryopreservation [PDF]

, 2013
This study addressed the effects of storage duration of epididymides at 5 °C before sperm collection and their fertility after cryopreservation in vitro.
fahrudin, M. (M), Karja, N. W. (N), Setiadi, M. A. (M)   +2 more
core  

Paternal Circadian Disruption Impairs Offspring Cognition via Sperm microRNAs

Advanced Science, EarlyView.
Paternal circadian disruption remodels the sperm small RNA payload, elevating miR‐92a‐3p/miR‐25‐3p levels and perturbing early embryonic gene regulatory programs. Microinjection experiments and single‐embryo transcriptomics reveal sex‐specific developmental vulnerabilities, ultimately impairing offspring hippocampal synaptic plasticity and cognition ...
Kexin Zou, Sisi Luo, Binliang Tang, Zhiqiang Liu, Yuchuan Zhou, Yicong Meng, Zhengmu Wu, Zheng Sun, Weihui Shi, Jianzhong Sheng, Chuanjin Yu, Zhenhua Li, Siyi Wei, Mo Zhang, Yujie Luo, Jing Yan, Xueyun Qin, Jiahang Mo, Chengliang Zhou, Jinsong Li, Hefeng Huang, Yifu Ding, Guolian Ding   +22 more
wiley   +1 more source

Effects of viscosity and ATP concentration on the movement of reactivated sea-urchin sperm flagella [PDF]

, 1975
1. Spermatozoa from the sea urchin, Lytechinus pictus, can be demembranated with solutions containing Triton X-100 and 5mM-CaCl2 and reactivated in ATP solutions containing low concentrations (10^(−9)M) Of free Ca^(2+) ion to give symmetrical bending ...
Brokaw, C. J.
core  

Depolarization of sperm membrane potential is a common feature of men with subfertility and is associated with low fertilization rate at IVF [PDF]

, 2016
STUDY QUESTION. Are significant abnormalities in outward (K+) conductance and resting membrane potential (Vm) present in the spermatozoa of patients undertaking IVF and ICSI and if so, what is their functional effect on fertilization success?
Barratt, Christopher L. R., Brown, Sean G., Lishko, Polina V., Mansell, Steven A., Martins da Silva, Sarah, Publicover, Stephen J., Ramalingam, Mythili, Sutton, Keith A., Williams, Hannah L., Wilson, Stuart M.   +9 more
core   +6 more sources