Results 61 to 70 of about 26,981 (241)

Testicular Echobiometry and Sperm Characterization in Oncilla (Leopardus tigrinus) From the Caatinga Biome

Zoo Biology, EarlyView.
We describe testicular echobiometry and sperm characterization in oncilla (Leopardus tigrinus) from the Caatinga biome, Ceará, Brazil. ABSTRACT Among neotropical small felids, the Leopardus tigrinus is classified as vulnerable by the International Union for Conservation of Nature, but studies on reproductive morphology and physiology are scarce for ...
Yuri Gonçalves Matos, Herlon Victor Rodrigues Silva, Bruna Farias Brito, Patrícia Vasconcelos Alves, Romário Parente dos Santos, Andreia Maria da Silva, Alexsandra Fernandes Pereira, Wojciech Janusz Niżański, Alexandre Rodrigues Silva   +8 more
wiley   +1 more source

Sperm acrosome associated 3 protein expression and antigenicity in horses [PDF]

Sperm acrosome associated 3 protein (SPACA3) is a unique, intra-acrosomal, conventional-type lysozyme-like protein of mammalian spermatozoa. SPACA3 is present in all stages of ovarian follicles and is localized to granulosa cells and ooplasma in humans ...
Cozzi, Brynley C.
core   +6 more sources

Impact of Chemotherapy on Sperm Functional Characteristics in Patients With Testicular Germ Cell Tumours

Andrology, EarlyView.
ABSTRACT Background Testicular germ cell tumours (TGCT) are the most common malignancies among young men and represent a major threat to reproductive health. Both the disease itself and oncological treatments, particularly chemotherapy, can compromise spermatogenesis and semen quality.
Ondrej Sanovec, Ondrej Simonik, Zuzana Kratka, Lukas Ded, Jana Vondrakova, Maryam Qasemi, Barbora Bryndova, Michala Krejci, Daniela Spevakova, Vishma Pratap Sur, Radomir Kren, Tomas Hradec, Pavel Skrobanek, Ludmila Boublikova, Libor Zamecnik, Tomas Buchler, Jiri Neuzil, Pavla Postlerova, Katerina Komrskova   +18 more
wiley   +1 more source

Effects of HFD on sperm acrosome reaction in mice.

, 2015
(A) Status of the mouse sperm acrosome stained with Commassie blue G250 in HFD and CD groups; the arrow indicates the intact acrosome stained with intensive blue. Scale bar = 20 μm.
Ke Xue (296679), Zhide Ding (725787), Weimin Fan (301233), Yali Xu (401789), Yue Liu (292931), Guobao Gu (725786), Yong Fan (212624)   +6 more
core   +1 more source

Loss‐of‐Function Variants in CCDC189 Cause Human Oligoasthenoteratozoospermia by Disrupting Sperm Flagellar and Acrosomal Architecture

Andrology, EarlyView.
ABSTRACT Background Oligoasthenoteratozoospermia (OAT), characterized by reduced sperm count, impaired motility, and abnormal morphology, is a major cause of male infertility with substantial genetic heterogeneity. However, the underlying genetic etiology remains unresolved in a large proportion of affected individuals.
Jianteng Zhou, Ghulam Mustafa, Tingting Lin, Jingwei Ye, Huan Zhang, Hanwei Jiang, Kexin Yang, Guoning Huang, Qinghua Shi   +8 more
wiley   +1 more source

Comparative morphometrics of oligochaete spermatozoa and egg‐acrosome correlation

, 1983
Ultrastructural variation between spermatozoa of nine lumbricid species has examined for Prearson r correlations, by principal components and coordinates analysis, and graphically, with particular reference to the acrosmoe.
Richards K.S., Fleming T.P., Jamieson B.G.M., Erseus C.   +3 more
core   +1 more source

Sperm Head–Tail Coupling Apparatus Diversity and Common Themes Among Species

Andrology, EarlyView.
ABSTRACT Background A stable connection between the sperm head (containing the nucleus and acrosome) and tail (containing the axoneme, mitochondrial sheath, and periaxonemal structures) is critical for fertility. This connection is mediated by a series of nuclear, cytoplasmic, and centriole components that make up the head–tail coupling apparatus (HTCA)
Danielle B. Buglak, Brian J. Galletta, Nasser M. Rusan   +2 more
wiley   +1 more source

Acrosome development.

, 2015
Immunofluorescent labeling of the acrosome using fluorescent peanut lectin (green) in P21, P23, and P34 testes. Microtubules were labeled with an anti-beta tubulin antibody (red), DAPI (blue) has been used to stain the DNA. Scale bars are indicated.
Christian Trötschel (710646), Konrad Sandhoff (710648), Diana Raju (710639), Hussein Hamzeh (710641), Dagmar Wachten (493762), Bernadette Breiden (710647), Peter Dörmann (710644), Frank Bradke (191747), Kevin C. Flynn (710642), Katharina vom Dorp (710643), Heinz G. Körschen (710649), Yildiz Yildiz (710645), Sophie Schonauer (710640), Ansgar Poetsch (68433)   +13 more
core   +1 more source

Acrosome reaction of fowl sperm: Evidence for shedding of the acrosomal cap in intact form to release acrosomal enzyme

Poultry Science, 2013
The aim of this study was to determine the site of enzyme release from the acrosome and the fate of the acrosomal cap during the process of acrosome reaction (AR) in fowl sperm. Gelatin substrate coverslips with halos were subjected to scanning electron microscopy to determine the site from which acrosomal proteolytic enzyme was released to form a halo
M U, Ahammad, C, Nishino, H, Tatemoto, N, Okura, S, Okamoto, Y, Kawamoto, T, Nakada   +6 more
openaire   +2 more sources

Improving ARTs: Microfluidics as a Tool for Sperm Selection

Andrology, EarlyView.
ABSTRACT Sperm selection is a critical step in assisted reproductive technology (ART), as sperm quality directly influences embryo quality. In vivo, the female reproductive tract imposes several physical and physiological barriers that favors only the most optimal spermatozoa reaching the fertilization site.
A. Pérez‐Gómez, A. Urriés, J. L. de Pablo, L. Serrano‐Ramón, S. Sanchez, R. Herrer, J. M. Morrell, C. Malo   +7 more
wiley   +1 more source