Results 21 to 30 of about 42,226 (251)

Assessment of Chromatin Maturity in Human Spermatozoa: Useful Aniline Blue Assay for Routine Diagnosis of Male Infertility

Advances in Urology, 2013
During spermatogenesis, sperm chromatin undergoes structural changes and results in a high condensation. This nuclear compaction would be useful as a predictor of sperm fertilization capacity and pregnancy outcome.
Afifa Sellami, Nozha Chakroun, Soumaya Ben Zarrouk, Hanen Sellami, Sahbi Kebaili, Tarek Rebai, Leila Keskes   +6 more
doaj   +1 more source

Correlation between ejaculate characteristics and sperm abnormalities in boars exposed to summer heat stress [PDF]

Biotechnology in Animal Husbandry
Seasonal heat stress is a well-known factor that negatively affects boar fertility, primarily by reducing semen quality and increasing the incidence of abnormal spermatozoa.
Petrović Aleksandra, Bogdanović Vladan, Radović Čedomir, Gogić Marija, Živković Vladimir, Stojiljković Nenad, Savić Radomir   +6 more
doaj   +1 more source

EFFECT OF GONADOTROPIN RELEASING HORMONE ON SEMEN CHARACTERISTICS IN NILI-RAVI BUFFALO BULLS [PDF]

Pakistan Veterinary Journal, 2007
The study was aimed at determining the effect of gonadotropin releasing hormone (GnRH) on semen characteristics in two Nili-Ravi buffalo bulls. The study was conducted in two phases.
M. SAJJAD, S. ALI, S. AKHTER AND N. ULLAH1
doaj  

Effects of Discontinuous Percoll Gradient Containing Alpha-linolenic Acid on Characteristics of Frozen-thawed Boar Spermatozoa

Journal of Animal Reproduction and Biotechnology, 2020
This present study was conducted to investigate protective effect of discontinuous Percoll gradient containing alpha-linolenic acid (ALA) before freezing process on viability, acrosome damage, mitochondrial activity, and oxidative stress of frozen-thawed
Doo-San Kim, Yong Hwangbo, Hee-Tae Cheong, Choon-Keun Park   +3 more
doaj   +1 more source

Inclusion of catalase in semen extender modulates the post thaw semen quality and oxidative stress profiles in mithun spermatozoa

Indian Journal of Animal Sciences, 2022
Present study was designed to assess the effect of catalase on post-thaw semen quality parameters (SQPs), sperm kinematics, antioxidant and oxidative stress profiles and sperm cholesterol efflux in mithun (Bos frontalis).
P PERUMAL, A K DE, R VIKRAM, M H KHAN
doaj   +1 more source

Transmission electron microscopic observations of flagellum abnormalities in impala (Aepyceros melampus) sperm from the Kruger National Park

Koedoe: African Protected Area Conservation and Science, 1997
Sperm must remain motile in order to reach and penetrate the ovum and defects in the ultrastructure of the tail can have an adverse influence on motility.
D.J. Ackerman, A.J. Reinecke, H.J. Els
doaj   +1 more source

Sperm shape abnormalities in carbaryl-exposed employees [PDF]

Environmental Health Perspectives, 1981
Semen was collected from 50 men occupationally exposed to carbaryl (1-naphthyl methyl carbamate) in a produciton plant for durations of 1 to 18 years and compared to semen from a control group of 34 unexposed, newly-hired workers. Employment, fertility, health, personal data, and blood samples were collected for each individual.
A J, Wyrobek, G, Watchmaker, L, Gordon, K, Wong, D, Moore, D, Whorton   +5 more
openaire   +2 more sources

ATZ‐1 promotes DNA replication efficiency to maintain normal meiotic function

FEBS Open Bio, EarlyView.
Absence of ATZ‐1 interferes with meiotic DNA replication and cell cycle function via CHK‐1. This causes downstream defects associated with DNA damage and genomic integrity. Taken together, this study suggests that ATZ‐1 influences DNA replication efficiency and cell cycle function to maintain normal meiotic function.
Taylin E. Gourley, Luke W. Molesworth, Nethma H. Waduge, Fahimeh Eskandari, Peter R. Boag, Gregory M. Davis   +5 more
wiley   +1 more source

Single sperm karyotyping of testicular sperm in non-obstructive and obstructive azoospermia using next generation sequencing.

PLoS ONE
The sperm of infertile men have higher rates of chromosomal abnormalities than those of fertile men. Miscarriage rate is also higher following testicular sperm extraction combined with intracytoplasmic sperm injection (TESE-ICSI).
Sumiko Sueyoshi, Akifumi Ijuin, Hiroe Ueno, Ai Miyakoshi, Haru Hamada, Misaki Toda, Naoki Tsuchiya, Miki Tanoshima, Mayuko Kurumizaka, Marina Saito, Yuki Oike, Kazumi Takeshima, Teppei Takeshima, Shinnosuke Kuroda, Yasushi Yumura, Shin Saito, Ryoko Asano, Taichi Mizushima, Etsuko Miyagi, Hideya Sakakibara, Hiroki Kurahashi, Akira Yanagihara, Mariko Murase, Tomonari Hayama   +23 more
doaj   +1 more source

Prevalence of chromosomal abnormalities and Y chromosome microdeletion among men with severe semen abnormalities and its correlation with successful sperm retrieval

Journal of Human Reproductive Sciences, 2016
AIM: To estimate the prevalence of chromosomal abnormalities and Y chromosome microdeletion among men with azoospermia and severe oligozoospermia and its correlation with successful surgical sperm retrieval.
Mariano Mascarenhas, Sumi Thomas, Mohan S Kamath, Ramya Ramalingam, Ann Marie Kongari, S Yuvarani, Vivi M Srivastava, Korula George   +7 more
doaj   +1 more source