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  • Digitale Medien  (4)
  • Electron microscopy  (2)
  • Immunohistochemistry  (2)
  • 1
    Digitale Medien
    Digitale Medien
    Distribution of tyrosine hydroxylase immunoreactive nerve fibers in the canine larynx (1992)
    Springer
    European archives of oto-rhino-laryngology and head & neck 249 (1992), S. 40-43 
    Details
    ISSN: 1434-4726
    Schlagwort(e): Immunohistochemistry ; Tyrosine hydroxylase ; Sympathetic nerve ; Larynx-Dog
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The sympathetic innervation of the canine larynx was investigated using tyrosine hydroxylase (TH) immunohistochemistry. Many tyrosine hydroxylase immunoreactive (TH-IR) nerve fibers were observed around arteries and arterioles in the laryngeal mucosa and intrinsic laryngeal muscles. In the glandular region, TH-IR fibers were also found, with some of these fibers terminating around the basement membranes of the glandular cells. The quantity of TH-IR fibers in the mucosa differed among regions of the larynx. Many of these fibers could be found in the laryngeal surface of the epiglottis as well as the posterior glottis. These findings suggest that TH-IR fibers may directly innervate muscles in the intrinsic larynx.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00175669
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Distribution of calcitonin gene-related peptide nerve fibers in the canine larynx (1992)
    Springer
    European archives of oto-rhino-laryngology and head & neck 249 (1992), S. 52-55 
    Details
    ISSN: 1434-4726
    Schlagwort(e): Calcitonin gene-related peptide ; Canine larynx ; Immunohistochemistry
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Immunohistochemistry was used to investigate the distribution pattern of calcitonin gene-related peptide (CGRP) nerve fibers in the laryngeal mucosa, glands and intrinsic muscles of the dog. CGRP immunoreactive nerve fibers were found more frequently than substance P immunoreative nerve fibers in every region of the larynx. In the epithelia, CGRP nerve fibers were mainly found in the epiglottis, arytenoid region and subglottis. Many taste buds were observed in the arytenoid region and were densely innervated by the CGRP nerve fibers. In the lamina propria, the plexus of CGRP nerve fibers was present, with some of these fibers associated with blood vessels. Laryngeal glands were also innervated by a few CGRP nerve fibers. In the intrinsic laryngeal muscles, abundant immunoreactivity was observed and many motor end-plate-like structures were found with CGRP immunoreactivity. These findings strongly suggest that CGRP plays an important role in all of the sensory, motor and autonomic nervous systems of the larynx.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00175672
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  • 3
    Digitale Medien
    Digitale Medien
    Sugar-binding sites with specificity for glucosamine in the guinea pig middle ear mucosa (1993)
    Springer
    European archives of oto-rhino-laryngology and head & neck 250 (1993), S. 412-417 
    Details
    ISSN: 1434-4726
    Schlagwort(e): Sugar-binding site ; Guinea pig ; Middle ear ; Lipopolysaccharide ; Electron microscopy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Glucosamine-binding sites were detected in Lowicryl K4M-embedded guinea pig middle ear mucosa by electron microscopy, using glucosaminyl bovine serum albumin. Incubation of ultrathin tissue sections with gold-labeled glucosaminyl bovine serum albumin (GlcN/BSA/gold) resulted in binding mainly on cilia, microvilli, rough endoplasmic reticulum and nuclei. The sugar binding was not inhibited after ultrathin sections had been digested with trypsin or neuraminidase. Various carbohydrates and glycoconjugates were tested as competitive inhibitors of G1cN/BSA/gold labeling on the tissue sections. The sugar specificity range detected by the glucosamine-binding sites included glucosamine, N-acetylglucosamine, mannose and fucose, whereas N-acetylgalactosamine, galactose and glucose were not detectable. A series of endotoxic substances such as Salmonella minnesota Re595 lipid A complex with BSA and lipopolysaccharides (LPS) derived from Escherichia coli 055: B5 or S. minnesota Re595 also competed with GlcN/BSA/gold binding. This indicates that the lipid A backbone glucosamine or other carbohydrate portions of LPS is a part of the structure recognized by glucosamine binding sites.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00180388
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  • 4
    Digitale Medien
    Digitale Medien
    Cell-surface glycoconjugate layer in the tubotympanic mucosa of the guinea pig as revealed by wheat germ agglutinin/gold labelling (1995)
    Springer
    European archives of oto-rhino-laryngology and head & neck 252 (1995), S. 249-254 
    Details
    ISSN: 1434-4726
    Schlagwort(e): Middle ear ; Glycoconjugate ; Wheat germ agglutinin ; Electron microscopy ; Guinea pig
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract To evaluate the protective function of the mucous blanket (MB) against lectin substances, we examined at the ultrastructural level whether intraluminal colloidal gold-labelled wheat germ agglutinin (WGA) could enter the MB-covered epithelial cell surface of the guinea pig tubotympanic mucosa. Post-embedding staining with WGA/gold on thin tissue sections was done in parallel for comparison. The cell surface glycoconjugate of the eustachian tubal and transitional epithelium had a typical bilayered structure: the outer MB and the microvilli-associated glycocalyx (MAG), which were interposed by the interciliary fluid zone. In squamous epithelium of the distal middle ear, the MB adhered to the MAG, thereby forming a monolayered coat of glycoconjugates at the cell surface. In the pre-embedding staining, WGA/gold did not bind with the MB and MAG in the eustachian tube, and exclusively bound with MB in the transitional area. Direct binding was also found with MAG and the apical plasmic membrane in the squamous epithelium. These findings indicate that MAG is occluded by MB lined with the interciliary fluid zone for luminal access of lectin at the proximal lumina of the tubotympanic epithelium. It is also suggested that MB existing at two sites possesses a different WGA-binding capacity: shielding as a “dust cover” in the eustachian tube and entrapping as a “flypaper” against lectin in the transitional area of the middle ear.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00179920
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