Results 1 to 10 of about 132,648 (346)

Ultrastructural evidence for the activation of autophagy and analysis of the protective role of autophagy in goat spermatozoa under liquid storage [PDF]

open access: yesFrontiers in Veterinary Science
Liquid storage of semen is a widely used technology for promoting genetic improvement in goat breeding. The short shelf life of spermatozoa greatly limits the application of liquid storage, which urgently needs to explore the underlying regulatory ...
Tengfei Liu   +5 more
doaj   +2 more sources

ANALYSIS OF SPERMATOZOA QUALITY USING PERCOLL DENSITY GRADIENT CENTRIFUGATION THROUGH THE ADMINISTRATION OF PHOSPHOLIPID + EGTA [PDF]

open access: yesJournal of Applied Life Sciences and Environment, 2022
The Percoll density gradient centrifugation (PDGC) method is frequently used in the sexing of spermatozoa. However, this method causes damage to the spermatozoa membranes, resulting in a decreased quality of spermatozoa.
ROOIJE R.H. RUMENDE   +3 more
doaj   +1 more source

The role of spermatozoa-zona pellucida interaction in selecting fertilization-competent spermatozoa in humans

open access: yesFrontiers in Endocrinology, 2023
Human fertilization begins when a capacitated spermatozoon binds to the zona pellucida (ZP) surrounding a mature oocyte. Defective spermatozoa-ZP interaction contributes to male infertility and is a leading cause of reduced fertilization rates in ...
Erica T. Y. Leung   +15 more
doaj   +1 more source

Effect of Green Laser Irradiation on Epididymal Camel Spermatozoa Quality Stored at 5°C [PDF]

open access: yesArab Universities Journal of Agricultural Sciences, 2021
Total number of forty testes from twenty Sudani camels (Camelus dromedarius) were used in the present study (>5-10 years old and 500-600 kg body weight).
Ahmed Seioudy   +6 more
doaj   +1 more source

VISEM-Tracking, a human spermatozoa tracking dataset [PDF]

open access: yesSci Data 10, 260 (2023), 2022
A manual assessment of sperm motility requires microscopy observation, which is challenging due to the fast-moving spermatozoa in the field of view. To obtain correct results, manual evaluation requires extensive training. Therefore, computer-assisted sperm analysis (CASA) has become increasingly used in clinics.
arxiv   +1 more source

#338 : Insights into the Zona-Pellucida Mediated Selection of Fertilization-Competent Spermatozoa

open access: yesFertility & Reproduction, 2023
Background and Aims: Human zona pellucida (ZP) selectively interacts with high-quality spermatozoa characterized by superior morphology and normal chromatin structure to achieve fertilization. Human ejaculate contains millions of spermatozoa with varying
Erica Tsz Ying Leung   +2 more
doaj   +1 more source

Clinical benefits of a modified Cryopiece system for cryopreservation of rare ejaculated and testicular spermatozoa for ICSI

open access: yesAsian Journal of Andrology, 2022
Cryopreservation of rare testicular-retrieved spermatozoa for intracytoplasmic sperm injection (ICSI) in patients with severe oligozoospermia and azoospermia remains a major challenge in clinical practice.
Wei Chen   +13 more
doaj   +1 more source

The relationship between seminal plasma aspartate aminotransferase activity, sperm osmotic resistance test value, and semen quality in boars [PDF]

open access: yesActa Veterinaria, 2013
The relationship between the activity of aspartate aminotransferase (AspAT) in seminal plasma and the values of the osmotic resistance test (ORT) of acrosomal membranes and semen traits was examined on 120 young hybrid Pietrain and Duroc boars.
Jacyno Eugenia   +5 more
doaj   +1 more source

A comparative study of cryodamages of boar spermatozoa frozen with conventional liquid nitrogen vapour freezing method

open access: yesIndian Journal of Animal Sciences, 2014
The objective of the present study was to quantify the various cryodamages that boar spermatozoa undergo following freezing with conventional liquid nitrogen vapour freezing method.
S K BAISHYA   +5 more
doaj   +1 more source

Increased frequency of aneuploidy in long-lived spermatozoa. [PDF]

open access: yesPLoS ONE, 2014
Aneuploidy commonly causes spontaneous abortions, stillbirths, and aneuploid births in humans. Notably, the majority of sex chromosome aneuploidies in live births have a paternal origin.
Young-Ah You   +6 more
doaj   +1 more source

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