Results 71 to 80 of about 26,981 (241)

Functional characterization and phenotyping of RAB2A and Lactadherin/MFGE8 as boar sperm zona pellucida binding proteins

Frontiers in Cell and Developmental Biology
Mammalian fertilization begins with the species-specific binding of spermatozoa to the oocyte’s zona pellucida (ZP), a process mediated by multiple surface proteins forming a functional receptor complex.
Natalie Zelenkova, Veronika Kraus, Lukas Ded, Daniela Spevakova, Lucie Sadilkova, Michaela Frolikova, Aneta Pilsova, Zuzana Pilsova, Barbora Klusackova, Ondrej Simonik, Eva Chmelikova, Tereza Krejcova, Michal Zigo, Peter Sutovsky, Peter Sutovsky, Marketa Sedmikova, Katerina Komrskova, Katerina Komrskova, Pavla Postlerova, Pavla Postlerova   +19 more
doaj   +1 more source

Guinea Pig Sperm Morphology and Fertility under Different Photoperiod

Animals, 2023
Sperm morphology can predict the reproductive male fertilizing potential. This study aimed to determine the morphological and morphometric spermatozoa characteristics from guinea pigs subjected to different photoperiodic stimulation.
Hurley Abel Quispe-Ccasa, Yander M. Briceño-Mendoza, Ilse Silvia Cayo-Colca   +2 more
doaj   +1 more source

ZAN, IZUMO1, and TMEM95 Protein Domains Identify the Physiological Status of the Sperm

Andrology, EarlyView.
ABSTRACT Background Infertility is a growing concern, which has led to an increase in the use of assisted reproductive techniques, involving in vitro sperm capacitation. Nonetheless, the optimal capacitation time remains a matter of debate, and it is unknown whether it has an impact on the localization of key membrane proteins.
Miranda Hernández‐Falcó, Paula Sáez‐Espinosa, Alejandro Romero, Andrea López‐Botella, Laura Robles‐Gómez, María José Gómez‐Torres   +5 more
wiley   +1 more source

Damage assessment of the equine sperm membranes by fluorimetric technique

Brazilian Archives of Biology and Technology, 2010
To validate a practical technique of simultaneous evaluation of the plasma, acrosomal and mitochondrial membranes in equine spermatozoa three fluorescent probes (PI, FITC-PSA and MITO) were associated.
Eneiva Carla Carvalho Celeghini, André Furugen Cesar de Andrade, Cláudia Fernandes Raphael, Juliana Nascimento, Janahi Souza Ticianelli, Rubens Paes de Arruda   +5 more
doaj   +1 more source

Spatiotemporal Expression of ARRDC5 in Mammalian Spermatogenesis

Andrology, EarlyView.
ABSTRACT Background Spermiogenesis is the final phase of sperm development during which haploid round spermatids transform into specialized spermatozoa and occurs across distinct stages of sperm production in the seminiferous epithelium. Abnormalities in this process lead to malformations and an inability of sperm to fertilize eggs.
LeeLa D. Robinson, Jon M. Oatley
wiley   +1 more source

Male Mice Heterozygous for Protamine 1 and Protamine 2 Are Infertile, Displaying Sperm Damage and Retention of Protamine 2 Precursors, Transition Proteins, and Histones

Andrology, EarlyView.
ABSTRACT Background During spermiogenesis, protamines (PRMs) replace histones to hypercondense and protect sperm DNA. Rodents and primates express two PRMs (PRM1 and PRM2). Alterations of species‐specific PRM ratios are associated with sub‐ or infertility in mice and humans.
Gina Esther Merges, Christoph Wiesejahn, Mar Domingo‐Lopez, Simon Schneider, Andjela Kovacevic, Lena Arévalo, Hubert Schorle   +6 more
wiley   +1 more source

Molecular basis of the morphogenesis of sperm head and tail in mice

Reproductive Medicine and Biology, 2022
Background The spermatozoon has a complex molecular apparatus necessary for fertilization in its head and flagellum. Recently, numerous genes that are needed to construct the molecular apparatus of spermatozoa have been identified through the analysis of
Keiichiro Yogo
doaj   +1 more source

Male Sexual and Reproductive Health in Diabetes and Obesity Pharmacotherapy: A Source‐Triangulated Counseling Map

Andrology, EarlyView.
ABSTRACT Background Drugs used for diabetes and obesity increasingly shape male sexual and reproductive counseling, but clinical studies, trial registrations, regulatory labels, and patents answer different questions. Objectives The objective is to map these sources and define what each can support when counseling men receiving metabolic drugs ...
Marek Broul, Michal Dubský, Aneta Hujová, Michaela Liegertová   +3 more
wiley   +1 more source

Deep‐Learning‐Based Profiling of Mouse Sperm Head and Neck Morphology Reveals Coordinated Structural Variation

Andrology, EarlyView.
ABSTRACT Background Mammalian sperm head morphology varies across species and dictates fertilization capability. Rodent sperm have asymmetric, hook‐shaped heads, complicating analysis. Despite widespread biomedical use, current tools poorly characterize these complex variations.
Gwidong Han, Seung Pyo Hong, Seung Jae Lee, Chunghee Cho   +3 more
wiley   +1 more source

Regulation of the sperm acrosome reaction

, 2009
The acrosome is a large secretory granule that undergoes exocytosis when receptors on the sperm surface bind ligands found on the oocyte's extracellular matrix.
Savaria, Julie
core   +2 more sources