Zobrazeno 1 - 10
of 176
pro vyhledávání: '"A F, Holstein"'
Autor:
A. F. Holstein
Publikováno v:
Andrologia. 8:157-165
Summary Ultrastructural aspects of the normal development of human spermatids are presented. Eight typical pictures of differentiation of spermatids are described based on cytological details of the acrosome, nucleus and tail. The transient appearanc
Publikováno v:
Andrologia. 3:117-125
Zusammenfassung In einer andrologischen Praxis wurden bei einem infertilen Mann im Ejakulat ausschlieslich rundkopfige Spermatozoen beobachtet. Mit Hilfe der Semidunnschnitt-Technik und der Elektronenmikroskopie konnte an Ejakulat- und Biopsiemateria
Autor:
Amal K. Mukhopadhyay, Marco Mewe, Ralf Middendorff, Dieter Müller, Michail S. Davidoff, Adolf F. Holstein
Publikováno v:
The Journal of Clinical Endocrinology & Metabolism. 87:3486-3499
The mechanisms responsible for the initial transport of immotile sperm from the testis into the epididymis are still poorly understood. We show here by electron microscopy and immunohistochemical approaches that the tunica albuginea of the human test
Publikováno v:
Urological Research. 28:338-341
This study investigated whether focal atrophy is a degenerative process of a whole tubule or tubular blockade as partial intratesticular degeneration. Serial section analyses of testicular tissue from 19 men with different andrologic diseases were ex
Publikováno v:
Biology of Reproduction. 63:651-657
Previous studies have demonstrated that cGMP is produced by nitric oxide-mediated activation of soluble guanylyl cyclase (sGC) in seminiferous tubules of the human testis. It is not known, however, whether carbon monoxide (CO), another activator of s
Autor:
A. Emmermann, Dietrich Kluth, Jakob R. Izbicki, Christian Bloechle, Tim Strate, C. Zornig, A. F. Holstein
Publikováno v:
Surgical Endoscopy. 13:683-688
Background: Minimal invasive surgery is increasingly used in conditions complicated by peritonitis—e.g., peptic ulcer perforation. This study was devised to assess the effect of a pneumoperitoneum (PP) on the ultrastructural integrity of parietal p
Publikováno v:
Biology of Reproduction. 58:160-168
Blood supply is essential for the maintenance of epididymal function. Since there is no considerable neovascularization in the epididymis, this tissue could represent a suitable model to study the vascular endothelial growth factor (VEGF) effect for
Publikováno v:
The Journal of Clinical Endocrinology & Metabolism. 82:4154-4161
Previous studies have demonstrated that nitric oxide (NO) influences Leydig cell function. Here we provide evidence for NO production and activity in seminiferous tubules and blood vessels of the human testis. By immunohistochemistry, the soluble gua
Publikováno v:
Archives of Histology and Cytology. 59:109-125
Myofibroblasts of the lamina propria of human seminiferous tubules were studied in testes having normal or slightly reduced spermatogenesis by means of electron microscopy, confocal laser microscopy and immunocytochemistry. Myofibroblasts are large,
Publikováno v:
Biology of Reproduction. 52:1095-1105
The genes coding for the core proteins of the small chondroitin sulfate/dermatan sulfate proteoglycans (PGs) biglycan and decorin are both expressed in the adult human testis. Northern hybridization of human testicular mRNA indicated the presence of