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  • 1995-1999  (3)
  • faeces  (2)
  • Colloid body  (1)
  • 1
    Electronic Resource
    Electronic Resource
    The role of granzyme B-expressing CD8-positive T cells in apoptosis of keratinocytes in lichen planus (1997)
    Springer
    Archives of dermatological research 289 (1997), S. 527-532 
    Details
    ISSN: 1432-069X
    Keywords: Key words Granzyme B ; Perforin ; Apoptosis ; Lichen planus ; Colloid body ; CD8 cell
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Epidermal basal cell injury with colloid body formation is a characteristic feature of lichen planus. Infiltrated cells are thought to be responsible for the epidermal injury. Ultrastructural findings of colloid bodies are typical of apoptosis. Granzymes in cytotoxic T lymphocytes are involved in apoptosis probably together with perforin. Based on this background, we analyzed the role of granzyme B in the mechanisms of epidermal injury in lichen planus. On electron microscopy, basal and suprabasal cells showed condensed chromatin and fragmented nuclei which are typical morphological features of apoptosis. Nuclei of colloid bodies were positively stained by the in situ nick end labeling technique indicating that colloid bodies are subsequently formed in the process of apoptosis. Immunohistochemical staining showed CD8-positive infiltrating cells to contain granzyme B. Cells undergoing exocytosis also contained granzyme B. By immunoelectron microscopy, granzyme B molecules were observed to be secreted from a lymphocyte to an apoptotic keratinocyte. These findings suggest that granzyme B-positive CD8 cells seem to induce apoptosis of keratinocytes in lichen planus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004030050234
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Experimental Detection of Canine Haemoglobin (Occult Blood) in Canine Faeces by Reversed Passive Latex Agglutination (1997)
    Springer
    Veterinary research communications 21 (1997), S. 347-353 
    Details
    ISSN: 1573-7446
    Keywords: diagnosis ; dog ; faeces ; latex agglutination ; occult blood ; serology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A reversed passive latex agglutination test (RPLA) using anti-canine haemoglobin (Hb) antibody was developed for detecting bleeding in the lower digestive organs in dogs, and its applicability as a simple test for faecal occult blood was assessed. In Ouchterlony's gel immunodiffusion test, the anti-canine Hb antibody used to sensitize the latex reacted with canine Hb but not with Hbs, plasmas or meat extracts from pigs, goats, sheep, cattle, horses or chickens, or with fish extracts. Using latex sensitized with 50 µg/mg of anti-canine Hb IgG antibody, the lowest limit of detection for canine Hb was 21 µg/ml, and the latex reacted negatively with all test specimens other than canine Hb. In an in vitro experiment with a mixture of canine faeces and erythrocytes, the antigenicity of the Hb was found to undergo only very slight changes even when the specimens were allowed to stand for 12 h at room temperature. Hb could not be detected by RPLA in any of four successive faecal samples from three experimental dogs after infusion of autologous blood (5, 3 or 1 ml) into the stomach. In 3 other experimental dogs given an infusion of autologous blood (5, 3 or 1 ml) into the ascending colon, the presence of Hb was confirmed by RPLA in all four successive faecal samples obtained from those which received 5 or 3 ml of blood and in all except that obtained following the first defecation from the animal which had received 1 ml of blood.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005812304532
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Immunological determination of faecal haemoglobin concentrations in dogs (1998)
    Springer
    Veterinary research communications 22 (1998), S. 193-201 
    Details
    ISSN: 1573-7446
    Keywords: diagnosis ; dog ; ELISA ; faeces ; latex agglutination ; occult blood ; serology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Faecal haemoglobin (Hb) concentrations in apparently healthy experimental Beagle dogs and in dogs of various breeds kept in private households or at breeders were measured by reversed passive latex agglutination (RPLA) and enzyme-linked immunosorbent assay (ELISA) in an effort to define the physiological concentrations of faecal Hb in the dog. In 88% (53) of 60 experimental Beagle dogs (30 males and 30 females), the RPLA titres were 1:2 and 1:8 and the faecal Hb concentrations ranged from 40.0 to 431.5 (mean 184.1±92.6) μg/g faeces by ELISA. No significant difference was found in Hb levels or RPLA titres between males and females. Seven dogs (12%) had significantly greater RPLA titres and Hb concentrations by ELISA than the remaining dogs. In 84% (45) of the 53 dogs kept in private households or at breeders, the RPLA titres were 〉1:1 to 1:8 and the faecal Hb concentrations ranged from 7.1 to 456.7 (mean 137.5±128.7) μg/g faeces in ELISA. Eight of these dogs (15.1% of 53 dogs) had significantly greater RPLA titres and Hb concentrations by ELISA than the remaining dogs. There were no significant differences between the Beagles and dogs kept in private households or at breeders. In conclusion, in 98 (86.7% of 113) dogs the physiological concentrations of RPLA titres were 〉1:1 to 1:8 and the faecal Hb concentrations were 143.5–185.1 μg/g (95% confidence level). Approximately 13.3% of apparently healthy dogs had higher faecal Hb concentrations, suggesting the presence of subclinical haemorrhages. Four dogs suffering from colorectal cancer also had high faecal Hb concentrations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006025422317
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    Paper (German National Licenses)
    Fulltext
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