Results 231 to 240 of about 1,544,426 (289)

Impact of Sorting and Catch Media on Porcine Sperm Motility, Capacitation, and Viability

Andrology, Volume 14, Issue 7, Page 2207-2220, October 2026.
ABSTRACT Background Fluorescence‐activated cell sorting (FACS) has emerged as a powerful tool for selecting spermatozoa of a desired population of fluorescent biomarkers, offering potential applications in reproductive biology and agriculture. However, concerns remain regarding sorting‐induced physiological alterations that could compromise spermatozoa
Tyler Weide, Juan Steibel, Karl Kerns
wiley   +1 more source

Microfluidic Intracytoplasmic Sperm Injection (MICSI): A Novel Platform for Sperm Isolation, Selection, and Injection Into Oocytes

Andrology, Volume 14, Issue 7, Page 2252-2261, October 2026.
ABSTRACT Background Infertility is a pressing global health concern, affecting one in six couples worldwide. The failure rate for assisted reproductive technologies (ART) cycles remains at approximately 78%, with limited improvements often attributed to a lack of technological innovation.
Mehran Dabiri, Dale Mark Goss, Steven Alexander Vasilescu, Majid Ebrahimi Warkiani   +3 more
wiley   +1 more source

Peroxiredoxin 4 Involved in Spermatogenesis by Affecting Oxidative Stress and Ferroptosis

Andrology, Volume 14, Issue 7, Page 2329-2346, October 2026.
ABSTRACT Background The main functions of testes are sperm production and androgen secretion in testicular befitting microenvironment. Excessive level of the reactive oxygen species (ROS) from metabolism and cellular events can lead to oxidative stress (OS) and ferroptosis, which injure the functions of mitochondria and endoplasmic reticulum (ER) of ...
Shuning Yuan, Nini Wei, Weiwei Ma, Mengting Hu, Bei Zhang, Li Gao, Chao Gao, Xiaoyu Yang, Yan Meng, Jiayin Liu, Yugui Cui   +10 more
wiley   +1 more source

Oocyte Activation and Fertilisation: Crucial Contributors from the Sperm and Oocyte

, 2017
This chapter intends to summarise the importance of sperm- and oocyte-derived factors in the processes of sperm-oocyte binding and oocyte activation. First, we describe the initial interaction between sperm and the zona pellucida, with particular regard to acrosome exocytosis. We then describe how sperm and oocyte membranes fuse, with special reference
Yeste, M, Jones, C, Amdani, S, Coward, K
openaire   +3 more sources

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Assisted oocyte activation

Česká gynekologie, 2023
Objective: Currently, there is a rapid increase in studies on assisted oocyte activation, which can significantly improve the process of in vitro fertilization. Fertilization of oocytes by conventional methods and by intracytoplasmic sperm injection can be affected by insufficient activation of the oocyte.
Pavel, Trávník, Michal, Ješeta, Renata, Hűttelová, Radomír, Křen, Lukáš, Landsmann, Andrea, Nesvadbová, Gabriela, Tauwinklová   +6 more
openaire   +2 more sources

Artificial oocyte activation: physiological, pathophysiological and ethical aspects

Systems Biology in Reproductive Medicine, 2019
Infertile couples with low oocyte yield in combination with abnormal semen parameters may experience intra-cytoplasmic sperm injection (ICSI) failure. An established factor associated with ICSI failure is oocyte activation deficiency (AOD).
Katerina Vassiou, Alexandros Daponte, George Anifandis   +2 more
exaly   +3 more sources

Activation of oocytes by latrunculin A

The FASEB Journal, 2002
ABSTRACT Actin depolymerization by latrunculin A (LAT‐A) in mature starfish oocytes induces a massive calcium mobilization that results in the discharge of the cortical granules and in the elevation of the fertilization envelope.
LIM, DMITRY, Lange, Klaus, Santella, Luigia   +2 more
openaire   +3 more sources

Gynogenetic Activation of Porcine Oocytes

Cellular Reprogramming, 2014
The possibility of fertilization without male contribution to the embryonic genome was investigated in pig oocytes. Mature oocytes were co-incubated with sperm, and in an attempt to prevent the incorporation of the sperm head into the ooplasm, the actin polymerization inhibitor cytochalasin B was added to the fertilization medium.
Kiho, Lee, Chunmin, Wang, Lee, Spate, Clifton N, Murphy, Randall S, Prather, Zoltan, Machaty   +5 more
openaire   +2 more sources

Electrical activation of mouse oocytes

Theriogenology, 1989
Activation of the oocyte is the least efficient step in nuclear transplantation in the rabbit. We report the influence of age of oocytes, field strength, pulse duration and number, and shape of field on the rate of activation of mouse oocytes by electrical pulses.
P, Collas, J J, Balise, G A, Hofmann, J M, Robl   +3 more
openaire   +2 more sources

Oolemma Receptors and Oocyte Activation

Systems Biology in Reproductive Medicine, 2010
At fertilization the sperm triggers a series of intracellular calcium oscillations that are pivotal to oocyte activation and development. Although the biological significance of the characteristic intracellular calcium (Ca(2+)(i)) oscillations is not fully understood, calcium ions are known to be involved in cortical granule release and in controlling ...
Kenneth L, White, Barry J, Pate, Benjamin R, Sessions   +2 more
openaire   +2 more sources