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  • Immunohistochemistry  (94)
  • Springer  (94)
  • American Association for the Advancement of Science
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  • 1
    Digitale Medien
    Digitale Medien
    Immunohistochemical characterization of the small proteoglycans decorin and proteoglycan-100 in heterotopic ossification (1994)
    Springer
    Calcified tissue international 54 (1994), S. 119-124 
    Details
    ISSN: 1432-0827
    Schlagwort(e): Decorin ; Proteoglycan-100 ; Heterotopic ossification ; Immunohistochemistry
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin , Physik
    Notizen: Abstract Heterotopic ossification is a metabolically active process which shares several properties of orthotopic bone formation and, therefore, represents an excellent model for studying bone matrix components. Immunohistochemical methods were used to investigate the distribution pattern of the small proteoglycans decorin and proteoglycan-100 during different stages of heterotopic ossification of pressure sores of paraplegic patients. Decorin and proteoglycan-100 exhibited a substantially divergent distribution pattern. Decorin was detectable in the perivascular matrix of granulation tissue as well as in the stroma of heterotopic ossification. The ossification zone was stained most strongly. In contrast, proteoglycan-100 was predominantly detectable in fibroblasts and preosteoblasts in early areas of osteogenesis. In more mature forms of heterotopic ossification immunostaining was markedly reduced in osteoblasts and osteocytes and even absent in so-called bone-lining cells. However, at least some osteoclasts were strongly positive. These results suggest indicate that decorin and proteoglycan-100 are important components during the formal pathogenesis of heterotopic ossification. The expression of the small proteoglycans, especially of proteoglycan-100, correlates with different phases during heterotopic ossification, showing a maximum for proteoglycan-100 in matrix-forming cells in early phases of bone formation, but in osteoclasts in mature bone.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00296062
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  • 2
    Digitale Medien
    Digitale Medien
    Localization of H+-ATPase and carbonic anhydrase II in ameloblasts at maturation (1994)
    Springer
    Calcified tissue international 55 (1994), S. 38-45 
    Details
    ISSN: 1432-0827
    Schlagwort(e): Vacuolar-type H+-ATPase ; Carbonic anhydrase II ; Immunohistochemistry
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin , Physik
    Notizen: Abstract The localization of vacuolar-type H+-ATPase and carbonic anhydrase II (CA II) in rat incisor enamel organs at maturation was examined by light and electron microscopy. The immunoreactivity for both vacuolar-type H+-ATPase and CA II was intense on the ruffled border of ruffle-ended ameloblasts (RA), but moderate at the distal end of smooth-ended ameloblasts (SA). Immuno-gold particles indicated that CA II was not confined to the ruffled border of RA alone, but also distributed in the cytoplasm of RA and SA. These findings suggest that RA may secrete protons produced by CA II via the ruffled border into enamel by active transport of vacuolar-type H+-ATPase. Secreted protons may activate hydrolytic enzymes to degrade the organic components of enamel matrix. Vacuolar-type H+-ATPase on vesicles of SA suggests that a specific configuration of ruffled borders in RA may be formed by the fusion of vesicle membranes in the distal end of cytoplasm of SA.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00310167
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  • 3
    Digitale Medien
    Digitale Medien
    Immunohistochemical study of temporal variations in cytochrome P-450 isozymes in rat testis and their modifications by the inductive effects of cadinenes (1991)
    Springer
    International journal of biometeorology 35 (1991), S. 234-238 
    Details
    ISSN: 1432-1254
    Schlagwort(e): Temporal variation ; Cytochrome P-450 isozyme ; Testis ; Immunohistochemistry ; Cadinenes
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geographie , Physik
    Notizen: Abstract Temporal variations in cytochrome P-450 isozymes of rat testis, PB-P-450 (forms of cytochrome P-450 strongly induced by phenobarbital) and MC-P-448 (forms of cytochrome P-450 strongly induced by 3-methylcholanthrene), were investigated immunohistochemically by the avidin-biotin-complex method using specific antibodies against PB-P-450 and MC-P-448 isozymes. Immunoreactivity to both PB-P-450 and MC-P-448 isozymes was observed in Leydig cells. The number of PB-P-450 positive Leydig cells was found to undergo significant time-of-day variation with a peak time of 0000 hours (light phase from 0800 to 2000 hours). Injection of cadinenes (300 mg/kg per day intraperitoneally at 48 and 96 h before sacrifice) induced PB-P-450 isozyme but did not induce MC-P-448 isozyme. The induction of PB-P-450 isozyme by cadinenes was time dependent, and the early dark phase (2000 and 0000 hours) was most sensitive. These results suggest that temporal variation of cytochrome P-450 isozymes is one of the important physiological variations in detoxification and activation of various xenobiotics and chemicals in the testis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01047291
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  • 4
    Digitale Medien
    Digitale Medien
    The distribution of NADPH diaphorase activity and immunoreactivity to nitric oxide synthase in the nervous system of the pulmonate mollusc Helix aspersa (1994)
    Springer
    Cell & tissue research 277 (1994), S. 565-572 
    Details
    ISSN: 1432-0878
    Schlagwort(e): Key words: NADPH diaphorase ; Nitric oxide synthase ; Nervous system ; central ; Nervous system ; peripheral ; Immunohistochemistry ; Helix aspersa (Mollusca)
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract. Enzyme histochemistry and immunocytochemistry were used to determine the distribution of neurons in the snail Helix aspersa which exhibited nicotinamide adenine dinucleotide phosphate (NADPH) diaphorase activity and/or immunoreactivity to nitric oxide synthase (NOS). NADPH diaphorase-positive cells and fibres were distributed extensively throughout the central and peripheral nervous system. NADPH diaphorase-positive fibres were present in all neuropil regions of the central and peripheral ganglia, in the major interganglionic connectives and in peripheral nerve roots. NADPH diaphorase-positive cell bodies were found consistently in the eyes, the lips, the tentacular ganglia and the procerebral lobes of the cerebral ganglia; staining of cell bodies elsewhere in the nervous system was capricious. The distribution of NOS-like immunoreactivity differed markedly from that of NADPH diaphorase activity. Small clusters of cells which exhibited NOS-like immunoreactivity were present in the cerebral and pedal ganglia; fibres which exhibited NOS-like immunoreactivity were present in restricted regions of the neuropil of the central ganglia. The disjunct distributions of NADPH diaphorase activity and NOS-like immunoreactivity in the nervous system of Helix suggest that the properties of neuronal NOS in molluscs may differ sigificantly from those described previously for vertebrate animals.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00300230
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  • 5
    Digitale Medien
    Digitale Medien
    Localization of mammary-derived growth inhibitor in capillary endothelial cells of the bovine mammary gland (1994)
    Springer
    Cell & tissue research 277 (1994), S. 457-464 
    Details
    ISSN: 1432-0878
    Schlagwort(e): Mammary-derived growth inhibitor ; Fatty acid-binding proteins ; Differentiation ; Vascularization ; Immunohistochemistry ; Immunocytochemistry ; Mammary gland ; Cow
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract Mammary-derived growth inhibitor (MDGI) has previously been localized in the mammary parencyma, dependent on the stage of differentiation of the mammary gland. Here, we have elucidated the distribution of MDGI in the mammary stroma by a combined immunohisto-and cytochemical analysis with antibodies raised against MDGI. Distinct staining of capillary endothelial cells has been revealed. Although its subcellular distribution resembles former observations in secretory epithelial cells, the expression of MDGI in capillary endothelial cells clearly precedes that in secretory epithelial cells. On the other hand, no endothelial MDGI staining has been detected in bovine heart, which contains a fatty acid-binding protein almost identical to MDGI. The localization of MDGI in the mammary capillary endothelium is discussed in terms of its possible involvement in the intracellular transport of hydrophobic ligands or in the regulation of endothelial cell proliferation.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00300218
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  • 6
    Digitale Medien
    Digitale Medien
    Immunohistochemical localization of chromogranin A and B in the endocrine cells of the alimentary tract of the green frog, Rana esculenta (1994)
    Springer
    Cell & tissue research 277 (1994), S. 341-349 
    Details
    ISSN: 1432-0878
    Schlagwort(e): Key words: Chromogranins ; Serotonin ; Amylin ; Regulatory peptides ; Gut ; Monoclonal antibodies ; Immunohistochemistry ; Rana esculenta (Anura)
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract. Novel monoclonal antibodies to human chromogranin A (CgA) and chromogranin B (CgB) were used to investigate the presence of immunoreactive (-IR) elements in the alimentary tract of the green frog Rana esculenta. Numerous CgA-IR and a few CgB-IR endocrine cells were found within the gut mucosa, from the oesophagus to the cloaca, with some local differences in density. Co-localization studies demonstrated that they were co-stored in almost all the serotonin-IR, the amylin-IR or islet amyloid polypeptide-IR cells and in the peptide tyrosine tyrosine-IR cells located proximal to the pylorus, but not in those located in more caudal tracts. No other co-localization was demonstrated; substances investigated included somatostatin, substance P, gastrin/cholecystokinin, glucagon, glycentin, bombesin, secretin and neurotensin. CgA-IR and CgB-IR cells nearly always displayed argyrophilia with the Grimelius silver method
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s004410050161
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  • 7
    Digitale Medien
    Digitale Medien
    Immunohistochemical localization of chromogranin A and B in the endocrine cells of the alimentary tract of the green frog, Rana esculenta (1994)
    Springer
    Cell & tissue research 277 (1994), S. 341-349 
    Details
    ISSN: 1432-0878
    Schlagwort(e): Chromogranins ; Serotonin ; Amylin ; Regulatory peptides ; Gut ; Monoclonal antibodies ; Immunohistochemistry ; Rana esculenta (Anura)
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract Novel monoclonal antibodies to human chromogranin A (CgA) and chromogranin B (CgB) were used to investigate the presence of immunoreactive (-IR) elements in the alimentary tract of the green frog Rana esculenta. Numerous CgA-IR and a few CgB-IR endocrine cells were found within the gut mucosa, from the oesophagus to the cloaca, with some local differences in density. Co-localization studies demonstrated that they were costored in almost all the serotonin-IR, the amylin-IR or islet amyloid polypeptide-IR cells and in the peptide tyrosine tyrosine-IR cells located proximal to the pylorus, but not in those located in more caudal tracts. No other co-localization was demonstrated; substances investigated included somatostatin, substance P, gastrin/cholecystokin, glucagon, glycentin, bombesin, secretin and neurotensin. CgA-IR and CgB-IR cells nearly always displayed argyrophilia with the Grimelius silver method
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00327782
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  • 8
    Digitale Medien
    Digitale Medien
    Immunoreactivity of the corpuscles of Stannius of the garpike, Lepisosteus osseus, to antisera against salmon and trout stanniocalcins (1994)
    Springer
    Cell & tissue research 277 (1994), S. 511-518 
    Details
    ISSN: 1432-0878
    Schlagwort(e): Key words: Corpuscles of Stannius ; Stanniocalcin ; Immunocytochemistry ; Immunohistochemistry ; Western blot ; Lepisosteus osseus (Holostei)
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract. Stanniocalcin-immunoreactive cells were localized in the corpuscles of Stannius of a holostean fish, the garpike (Lepisosteus osseus), using antisera against salmon and trout stanniocalcins and the peroxidase-antiperoxidase and protein A-gold immunohistochemical methods. The stanniocalcin-immunoreactive cells were periodic acid-Schiff-positive, and antibody staining was abolished if the antiserum was preabsorbed with corpuscle homogenate. Immunocytochemistry revealed two reactive cell types in the glandular parenchyma, and immunoreactivity was confined to the secretory granules. Staining of the granules was also abolished when the antisera were blocked with crude corpuscle homogenate. When corpuscle extracts from garpike were subjected to sodium dodecyl sulphate-polyacrylamide gel electrophoresis and Western blot analysis, a single dense band was evident with a molecular weight of ∼68 kDa under non-reducing conditions, whereas three bands were observed (∼29, ∼31, and ∼34 kDa) under reducing conditions. Staining of all bands disappeared following preabsorption of the antiserum with salmon stanniocalcin, trout stanniocalcin, or garpike corpuscle extract. The results are compared with stanniocalcins from another extant holostean, the bowfin (Amia calva), and from more modern bony fishes, the teleosts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00300224
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  • 9
    Digitale Medien
    Digitale Medien
    Immunoreactivity of the corpuscles of Stannius of the garpike, Lepisosteus osseus, to antisera against salmon and trout stanniocalcins (1994)
    Springer
    Cell & tissue research 277 (1994), S. 511-518 
    Details
    ISSN: 1432-0878
    Schlagwort(e): Corpuscles of Stannius ; Stanniocalcin ; Immunocytochemistry ; Immunohistochemistry ; Western blot ; Lepisosteus osseus (Holostei)
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract Stanniocalcin-immunoreactive cells were localized in the corpuscles of Stannius of a holostean fish, the garpike (Lepisosteus osseus), using antisera against salmon and trout stanniocalcins and the peroxidase-antiperoxidase and protein A-gold immunohistochemical methods. The stanniocalcin-immunoreactive cells were periodic acid-Schiff-positive, and antibody staining was abolished if the antiserum was preabsorbed with corpuscle homogenate. Immunocytochemistry revealed two reactive cell types in the glandular parenchyma, and immunoreactivity was confined to the secretory granules. Staining of the granules was also abolished when the antisera were blocked with crude corpuscle homogenate. When corpuscle extracts from garpike were subjected to sodium dodecyl sulphate-polyacrylamide gel electrophoresis and Western blot analysis, a single dense band was evident with a molecular weight of ∼68 kDa under non-reducing conditions, whereas three bands were observed (∼29, ∼31, and ∼34 kDa) under reducing conditions. Staining of all bands disappeared following preabsorption of the antiserum with salmon stanniocalcin, trout stanniocalcin, or garpike corpuscle extract. The results are compared with stanniocalcins from another extant holostean, the bowfin (Amia calva), and from more modern bony fishes, the teleosts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00300224
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  • 10
    Digitale Medien
    Digitale Medien
    The use of constitutive nuclear oncoproteins to count neurons in the enteric nervous system of the guinea pig (1994)
    Springer
    Cell & tissue research 277 (1994), S. 325-331 
    Details
    ISSN: 1432-0878
    Schlagwort(e): c-Myc ; c-Fos ; Vasoactive intestinal polypeptide (VIP) ; Immunohistochemistry ; Intestine, small ; Enteric nervous system ; Guinea pig
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract Immunohistochemical double labelling of the enteric nervous system of the guinea pig ileum was performed with a monoclonal antibody (anti-MYC 033) directed against a peptide sequence of the human c-Myc protein together with antibodies directed against either the neuron-specific antigens neuron-specific enolase or PGP 9.5 or the glia-specific marker S-100 to demonstrate that anti-MYC 033 labelled the nuclei of all enteric neurons but not glia. This strategy was also employed to demonstrate that another anti-c-Myc monoclonal anti-body, anti-MYC 070, labelled the nuclei of all neurons and glia, as well as perhaps all other cells in these preparations. A polyclonal antiserum raised against a peptide sequence of the human c-Fos protein (anti-FOS 4) was shown to label the identical nuclei as anti-MYC 033. The ganglionic density of nuclei labelled by anti-FOS 4 was found to be similar to previous measures of the ganglionic density of neurons. Double labelling with anti-MYC 033 and an antiserum directed against vasoactive intestinal polypeptide was performed to reexamine the ganglionic density of neurons that express this neuropeptide. Our results suggest that the ganglionic density of these neurons might be less than previously determined.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00327780
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