Results 21 to 30 of about 24,732 (236)

STUDIES ON THE ACROSOME. X. DIFFERENTIATION OF THE STARFISH ACROSOME* [PDF]

open access: yesDevelopment, Growth and Differentiation, 1971
The course of acrosomal differentiation observed during spermiogenesis in two starfishes shows that the central components of the mature acrosome are produced by Golgi activity. In the early spermatid, small Golgi-derived vesicles enter the hydrated acrosomal mass and appear to contribute their membrane constituents to the acrosomal-membrane precursor ...
J C, Dan, A, Sirakami
openaire   +2 more sources

Inceptor facilitates acrosomal vesicle formation in spermatids and is required for male fertility

open access: yesFrontiers in Cell and Developmental Biology, 2023
Spermatogenesis is a crucial biological process that enables the production of functional sperm, allowing for successful reproduction. Proper germ cell differentiation and maturation require tight regulation of hormonal signals, cellular signaling ...
Sara Bilekova   +18 more
doaj   +1 more source

Localization of Acrosomal Proteinase after Vesculation of the Acrosome [PDF]

open access: yesDevelopment, Growth & Differentiation, 1981
The freshly ovulated egg is covered by the zona pellucida and follicular‐cell layer. The former is reported to dissolved by acrosomal proteinase and the latter may be dispersed by hyaluronidase. If these two enzymes have different targets, two possibilities can be taken into consideration concerning the timing of release of the two enzymes from the ...
Yasuhiro, Sakai, Kenjiro, Yasuda
openaire   +2 more sources

Validation of Calcein Violet as a New Marker of Semen Membrane Integrity in Domestic Animals

open access: yesAnimals, 2023
Many fluorochromes routinely used in semen quality analysis emit in the green and red channels, limiting their possible combination for multiple parameter analysis.
Sophie Egyptien   +5 more
doaj   +1 more source

Sperm Differentiation from a Cytoskeletal Perspective with a Focus on the Microtubulome: A New Window into Unknown Aspects of Male Infertility [PDF]

open access: yesمجله دانشکده پزشکی اصفهان, 2000
According to the World Health Organization, infertility refers to a couple's inability to conceive following at least one year of regular unprotected sexual intercourse.
Mina Za,mani Almasi   +6 more
doaj   +1 more source

The Acrosomal Matrix [PDF]

open access: yes, 2016
The acrosome, a single exocytotic vesicle on the head of sperm, has an essential role in fertilization, but the exact mechanisms by which it facilitates sperm-egg interactions remain unresolved. The acrosome contains dozens of secretory proteins that are packaged into the forming structure during spermatogenesis; many of these proteins are localized ...
James A, Foster, George L, Gerton
openaire   +2 more sources

EVALUATION OF ACROSOMAL STATUS ON LLAMA SPERM [PDF]

open access: yesSPERMOVA, 2015
No ...
Carretero MI   +3 more
doaj   +1 more source

Artemisia vulgaris extract causes precocious acrosome reaction and viability loss but low rate of membrane damage in mouse spermatozoa

open access: yesJournal of Animal Science and Technology, 2021
Several herbs including Artemisia are known to possess conceptive property. In the present study, mouse spermatozoa were incubated with ethanol extract of Artemisia vulgaris leaves. The effect of
Sabina Bhandari   +4 more
doaj   +1 more source

The effect of concentration and storage time on short-term storage of ram sperm [PDF]

open access: yesKafkas Universitesi Veteriner Fakültesi Dergisi, 2022
The present study was conducted to observe the effect of different dilution rates on ram sperm motion characters (motility, progressivity, velocity and average of speed), head diameter, mitochondrial membrane potential (MMP) and live intact acrosome ...
Cemal DAYANIKLI   +4 more
doaj   +1 more source

CaMKIIalpha interacts with multi-PDZ domain protein MUPP1 in spermatozoa and prevents spontaneous acrosomal exocytosis [PDF]

open access: yes, 2009
The success of acrosomal exocytosis, a complex process with a variety of inter-related steps, relies on the coordinated interaction of participating signaling molecules.
Borth, Heike   +5 more
core   +1 more source

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