Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 91 (1968), S. 429-455 
    ISSN: 1432-0878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Die Ultrastruktur der Interrenalzellen des Huhns wird beschrieben. Die interrenalen Zellen enthalten, wie andere Steroid-produzierende Zellen, mehr glattes endoplasmatisches Reticulum als die granuläre Form und Mitochondrien mit tubulärer Innenstruktur. Andere zytoplasmatische Strukturen sind Lipidtropfen, Dense Bodies und Golgi-Apparat. Folgende Strukturen wurden erstmals in der Vogelnebenniere nachgewiesen: Intramitochondriale kristallisierte Tubuli und Lipid-ähnliche Tröpfchen in der Mitochondrienmatrix, zytoplasmatische Mikrotubuli, Filamente und Zilien, sowohl frei als auch intrazytoplasmatisch gelegen, ferner Sphäridien und intranukleäre Lipid-ähnliche Einschlüsse sowie Haftapparate, oft kombiniert mit komplizierten zytoplasmatischen Ein- und Ausstülpungen. Ebenfalls erstmalig zeigt diese Arbeit die Polarität der Interrenalzellen des Huhns. Diese befinden sich auf einer Basalmembran und enthalten die meisten Fetttröpfchen am basalen (vaskulären) Pol und Golgi-Apparat, Dense Bodies und Haftapparate am apikalen Pol. Dank der gleichmäßigen Fixation des gesamten Organs wurde eine Grundlage für spätere Untersuchungen der Physiologie und Pathologie der Nebenniere geliefert.
    Notes: Summary The ultrastructural features of interrenal cells derived from the normal domestic fowl are described. The interrenal cells, like other steroid-producing cells, contain more smoothsurfaced endoplasmic reticulum than the granular variety, and accommodate mitochondria with tubular inner structure. Other cytoplasmic structures are lipid droplets, dense bodies and the Golgi apparatus. The following structures were demonstrated for the first time in the avian adrenocortical cell:intramitochondrial crystallized tubules and intramatrical lipid-like droplets, cytoplasmic microtubules and filaments, cilia, both free and intracytoplasmic; nuclear bodies and intranuclear lipid-like inclusions; and attachment devices, often combined with mortisetenon joints. Likewise, this study demonstrated for the first time the polarity of the interrenal cells of the fowl. These rest on a basal lamina and accommodate the majority of lipid droplets at the basal (vascular) pole, and the Golgi apparatus, dense bodies and attachment devices at the apical pole. Due to the uniform fixation of the entire organ obtained in this investigation, the present work has provided a useful base line for subsequent investigations concerning adrenal physiology and pathology (Kjaerheim, 1968b, c).
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 91 (1968), S. 456-474 
    ISSN: 1432-0878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Die atrophischen Veränderungen in den Interrenalzellen des Huhns, die durch Dexamethason- und Medroxyprogesteronbehandlung hervorgerufen werden, wurden untersucht. Die wichtigsten zytoplasmatischen Veränderungen waren Vermehrung der Zahl und Größe der Lipidtropfen, eine Verminderung des glatten endoplasmatischen Retikulums und Anzeichen von Segregation der Lipidtropfen innerhalb zytoplasmatischer Bläschen. Folgende Kernveränderungen wurden beobachtet: Schrumpfung, ein unregelmäßiger Verlauf der Kernmembran, Fetteinschlüsse, erhöhte Anzahl von Sphäridien (Nuclear bodies) und kleine Nucleoli ohne Vakuolen, wie man sie nach einer Stimulation mit ACTH und Metopiron beobachtet (Kjaerheim, 1968 c). Die atrophischen Veränderungen nach beiden Steroid behandlungen waren im wesentlichen identisch und in beiden Zonen gleich stark.
    Notes: Summary The atrophie changes of interrenal cells of the fowl, caused by administration of dexamethasone and medroxyprogesterone were studied. The main cytoplasmic changes were increased amounts of lipid droplets, decrease of the smooth-surfaced endoplasmic reticulum and signs of segregation of lipid droplets within cytoplasmic vacuoles. The nuclear alterations were shrinkage of the nucleus, an irregular course of the nuclear membrane, lipid inclusions, decrease in the number of nuclear bodies and small nucleoli lacking vacuoles as seen after stimulation with ACTH (Kjaerheim, 1968c). The atrophic changes were essentially identical after the two types of steroid treatment, and were equally prominent in both zones of interrenal cells.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 137 (1973), S. 345-359 
    ISSN: 1432-0878
    Keywords: Accessory sex organs ; Male rat ; Prostate ; Seminal vesicles ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A systematic, comparative study of the accessory sex organs of the adult male rat was carried out after intra-aortic perfusion of the pelvic organs with glutaraldehyde. It has been revealed that although the epithelial cells of the different lobes of the prostate have many features in common, it is also apparent that the cell type of the various lobes have specific ultrastructural characteristics of its own, which morphologically distinguish it from the cell type of the other lobes. I.e.: the different lobes may be identified by their specific ultrastructural feature. It is also striking that the lobes, two-by-two, have so many morphological features in common that they may be divided in 3 subgroups. Based on the appearance of amount and localisation of the different organelles, the cells of the lateral lobe and the seminal vesicle are so alike that they morphologically may be classified as one group. Similarly, the coagulating gland and the dorsal lobe form another group, while the ventral lobe as a single form a third group. The few biochemical data from the different lobes which are accessible, seem suggestive to support this subgrouping. Since the various prostate lobes and the seminal vesicles have their homologies in man, further investigation both morphologically and biochemically should be concentrated upon the different groups instead of the single lobe. The study, which describes the different lobes and cell types in detail also show structures which have not been demonstrated within the prostatic epithelium before.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 148 (1974), S. 57-67 
    ISSN: 1432-0878
    Keywords: Prostate ; Rat ; Cyproterone ; Alterations ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The dorsal lobe and the coagulating gland of the rat prostate were studied after administration of the anti-androgenic compound Cyp A for varying periods (7–20 days). There was a general involution of the organs with macroscopic atrophy and reduced amount of secretory material. Ultrastructurally the cells were pale, contained less organelles as compared with the controls, loss of cytoplasm and reduction both of cell height and width. The major changes also included reduction of the Golgi area, the rough endoplasmic reticulum and the number of free ribosomes. Within the dorsal lobe prominent nuclear changes were found, comprising different types of intranuclear inclusions of membranous configurations. The alterations observed in the present study are similar to the changes which were found in castrated animals and are consistent with atrophy. The results are discussed in relation to the available biochemical and autoradiographic data on the different lobes.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 144 (1973), S. 167-178 
    ISSN: 1432-0878
    Keywords: Prostate ; Rat ; Castration ; Alterations ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The ventral, lateral and dorsal lobes of the rat prostate were studied 2, 3, 5, 7 and 21 days after castration. The major changes were a general reduction of the Golgi area and the RER. The cells became pale and contained less organelles compared with the normals. One of the most conspicuous changes were enormous autophagic vacuoles which were present already after 2 days, seemed to reach a numerical peak 3 days after castration and were seldom encountered after 7 days. Increased number of dense bodies were found within the same period. Lipid droplets were observed in the basal cytoplasm of the epithelial cells, especially in the ventral lobe. The basal cells showed the same involution as in the ordinary epithelium. In addition, macrophages were relatively numerous, and between the epithelial cells also lymphocytes were found. The results are discussed in relation to biochemical data on the different lobes.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...