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  • Electronic Resource  (5)
  • Cell & Developmental Biology  (5)
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  • Electronic Resource  (5)
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  • 1
    Electronic Resource
    Electronic Resource
    Ultrastructural distribution of sulfated complex carbohydrates in elastic cartilage of the young rabbit (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 207 (1983), S. 547-556 
    Details
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: Sulfated glycosaminoglycans are an integral component of elastic cartilage. We have investigated the ultrastructural distribution of sulfated complex carbohydrates (CC)in the mature cartilage and the perichondrium of young rabbit auricles using the high iron diamine-thiocarbohydrazide-silver proteinate (HID-TCH-SP) and the tannic acid-ferric chloride (TA-Fe) methods. In the mature cartilage, HID-TCH-SP stained intracellular Golgi saccules of the mature face, secretory granules, and the extracellular matrix granules, but staining was not discernible in collagen fibrils and osmiophilic elastic fibers consisting of only amorphous elastin. The HID and TA-Fe staining were similarly observed in matrix granules, whereas the elastic fibers and collagen fibrils lacked the staining. The pericellular matrix granules had a diameter of 34 ± 5 nm (mean ± SD; n = 30). Thiéry's periodate-TCH-SP (PA-TCH-SP) method stained vicinal glycol-containing CC in collagen fibrils but failed to stain matrix granules and elastic fibers. In the perichondrium, HID-TCH-SP staining of the organelles was less intense in the flattened chondrocytes when compared with those in large mature chondrocytes. The extracellular HID and HID-TCH-SP staining were observed in the matrix granules. The diameter of pericellular matrix granules (19 ± 4 nm, mean ± SD; n = 30) was significantly smaller when compared to those in the mature cartilage (P 〈 0.001). The HID-TCH-SP staining was closely associated with collagen fibrils. However, the staining was not seen in collagen fibrils and osmiophilic elastic fibers consisting of elastin and microfibrils. The PA-TCH-SP method stained collagen fibrils and microfibrils but did not stain the amorphous elastin. Thus these studies demonstrate that sulfated CC are packaged in chondrocyte secretory granules and are released into the extracellular matrix to form matrix granules, but are not incorporated into collagen fibrils and elastic fibers.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ar.1092070403
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Neutrophil lactoferrin content: Variation among mammals (1988)
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 221 (1988), S. 567-575 
    Details
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: Lactoferrin (Lf) in blood and/or marrow neutrophils was semiquantified using indirect immunofluorescence technique in nine mammalian species. Neutrophil iron-binding reactivity (NFeBR), which corresponds primarily to Lf, was also visualized and semiquantified using functional cytochemical (FeNTA-AF) technique at the light microscopic level in these nine and in an additional fifteen mammalian species, and in selected species at the ultrastructural level. Neutrophil immunoreactive Lf was positively correlated with total cellular and granule content of NFeBR among these nine species, and with previously reported concentrations of neutrophil Lf quantified by radioimmunoassay. Relative levels of Lf in neutrophil extracts from rat, hamster, and human were confirmed using SDS-polyacrylamide gel electrophoresis and immunoblotting. Relatively high levels of immunoreactive neutrophil Lf and/or NFeBR were observed in carnivores (ten species) and primates (six species). Among rodents (five species), the levels were variable, and the artiodactyls (four species) studied had low levels. These results demonstrate that neutrophil Lf levels vary widely among mammalian species. In addition, FeNTA-AF technique provides a rapid means of evaluating animals for relative quantities of neutrophil Lf.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ar.1092210202
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  • 3
    Electronic Resource
    Electronic Resource
    Vicinal glycol-staining identifies secondary granules in human normal and chédiak-higashi neutrophils (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 205 (1983), S. 301-311 
    Details
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: Neutrophil secondary granules contain large amounts of glycoprotein. We evaluated periodate-thiocarbohydrazide-silver proteinate (PA-TCH-SP) staining of these granules after α-amylase digestion to assess their content of vicinal glycol-containing glycoconjugates and the usefulness of this stain as a positive stain for secondary granules. Using this method, early stages of secondary granule genesis were observed prior to completion of primary granule genesis in myelocytes. Immature secondary granules appeared round to ovoid, but irregular in outline and demonstrated strong staining of the limiting membrane and matrix material. In mature granules, matrix staining was unaltered; however, membrane staining was decreased. Some immature primary granules in promyelocytes demonstrated strong PA-TCH-SP reactivity which was masked in mature primary granules of band and segmented neutrophils. The Golgi apparatus showed progressively increasing PA-TCH-SP reactivity toward its mature surface which was often convex in promyelocytes and myelocytes and concave in segmented neutrophils. The Chédiak-Higashi secondary granules were cytochemically and morphologically similar to those of normal individuals and were not statistically decreased in number when compared to controls. They were only rarely observed contacting or fusing with giant granules which had consumed all primary granules leaving an easily detected population of secondary granules. Thus the α-amylase-PA-TCH-SP method demonstrates a large amount of unmasked vicinal glycol-containing glycoconjugates in neutrophil secondary granules, which allows their differentiation from primary granules.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ar.1092050307
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  • 4
    Electronic Resource
    Electronic Resource
    Ultrastructural cytochemistry of proteoglycans associated with calcification of shark cartilage (1984)
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 208 (1984), S. 149-158 
    Details
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: Proteoglycans (PGs) as well as sulfated glycosaminoglycans (GAGs) are closely associated with cartilage calcification. An inner zone of endoskeletal tesserae of sharks is composed of a unique calcified hyaline cartilage. Initial calcification can be seen in the cartilage close to the inner zone. We have ultrastructurally examined shark, Triakis scyllia, noncalcifying, calcifying, and calcified cartilage using the tannic acid-ferric chloride (TA-Fe), the high iron diamine (HID), and the HID-thiocarbohydrazide-silver proteinate (HID-TCH-SP) methods for localization of sulfated complex carbohydrates. In noncalcifying cartilage, TA-Fe and HID strongly stained matrix granules which were round, ovoid, elongated, or irregularly shaped and presumably represented PG monomers. The size and staining intensity of the reactive matrix granules progressively decreased in calcifying cartilage toward the calcification front of the calcified cartilage. Similarly, a progressive decrease in the size of the HID-TCH-SP stain deposits in the matrix granules was observed in the calcifying cartilage close to the calcification front and was interpreted as a decrease in length of sulfate containing GAG chains. In the calcified cartilage, the highly calcified areas were often localized in the calcification front and contained few or no small HID-TCH-SP stain deposits, whereas the weakly calcified regions contained more stain deposits. These results indicate that partial and complete degradation of sulfated GAGs and/or PGs may be a requisite for calcification of shark cartilage.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ar.1092080202
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  • 5
    Electronic Resource
    Electronic Resource
    Ultrastructural visualization of complex carbohydrates in eosinophilic leukocytes (1982)
    New York, NY [u.a.] : Wiley-Blackwell
    American Journal of Anatomy 165 (1982), S. 53-67 
    Details
    ISSN: 0002-9106
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: Complex carbohydrates in eosinophils from human, rabbit, and rat marrow were identified and localized by cytochemical and radioautographic methods. The high iron diamine-thiocarbohydrazide-silver proteinate (HID-TCH-SP), low iron diamine (LID)-TCH-SP, and periodate (PA)-TCH-SP methods were used for the localization of sulfate, sulfate and carboxyl, and vicinal glycol-containing complex carbohydrates, respectively. Golgi vesicles and small precursor granules (0.2-0.4 μm in diameter) demonstrated strong HID-TCH-SP staining and labeled intensely after a 10-minute pulse with 35 SO42-. Crystalloid-free or immature specific granules (0.5-0.9 μm in diameter) labeled heavily after a 60-minute incubation and 60-minute chase with 35SO42-. Immature granules were graded according to their HID-TCH-SP staining: Type 1 granules demonstrated strong rim staining and similar or somewhat less central staining, whereas type 2 granules only demonstrated rim staining, and type 3 granules lacked staining. Fully mature crystalloid-containing granules lacked staining. LID-TCH-SP similarly stained the HID-positive sulfated material in cytoplasmic granules. PA-TCH-SP stained some Golgi vesicles and diffusely stained all precursor granules and type 1 granules. Weaker staining was observed in type 2 granules and staining was very weak or absent in type 3 and crystalloid-containing granules. In early eosinophils, tubulovesicular structures (TVS) were observed rosetting and contacting precursor and type 1 granules. These TVS contained material with strong PA-TCH-SP staining but lacked HID-TCH-SP or LID-TCH-SP-reactive acidic glycoconjugates. Flattened Golgi saccules of early eosinophils stained weakly or not at all with the PA-TCH-SP method. Small granules and TVS in late (bilobed) eosinophils displayed PA-TCH-SP reactivity and lacked HID-TCH-SP staining but differed from TVS in early eosinophils in that they were not associated as rosettes with specific granules. These results indicate that sulfated and vicinal glycol-containing complex carbohydrates are differently distributed in immature specific granules of eosinophils and presumably become masked to staining as the granule matures.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aja.1001650106
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