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  • 1
    Electronic Resource
    Electronic Resource
    Immunohistochemical study of the colonic muscle and innervation in idiopathic chronic constipation (1995)
    Springer
    Diseases of the colon & rectum 38 (1995), S. 509-513 
    Details
    ISSN: 1530-0358
    Keywords: Colon ; Innervation ; Nerves ; Muscle ; Immunohistochemistry ; Constipation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract PURPOSE: This study was designed to investigate neural and muscular features of the colonic wall in patients with severe idiopathic constipation. METHODS: By using quantitative immunohistochemistry, resected specimens from 14 patients with idiopathic chronic constipation and 17 nonobstructed cancer controls were studied. RESULTS: Routine histology revealed no significant histologic abnormality throughout the colon apart from four cases of melanosis coli. Ratio of the thickness of circular to longitudinal muscle was significantly lower in the left colon in constipated subjects. The myenteric plexus appeared morphologically normal in all subjects. S-100 protein, which stains neuronal supporting tissues, demonstrated an increase in the proportion of neural tissue in the myenteric plexus. There was an increased number of PGP-9.5 immunoreactive nerve fibers in the muscularis propria in constipated patients, and this was significantly higher in the ascending and descending colon. CONCLUSION: Intractably constipated patients have alterations in the neural composition of the colonic myenteric plexus and innervation of the circular muscle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02148851
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A model of litter harvesting by the Western Australian wheatbelt termite,Drepanotermes tamminensis (Hill), with particular reference to nutrient dynamics (1996)
    Springer
    Ecological research 11 (1996), S. 69-78 
    Details
    ISSN: 1440-1703
    Keywords: Drepanotermes tamminensis ; harvesting rate ; Isoptera ; nutrient dynamics ; simulation model ; termites
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A series of papers have been published which describe the influence of vegetation and soil type on the Western Australian wheatbelt termite,Drepanotermes tamminensis (Hill), and also on its litter harvesting levels and contribution to the soil nutrient budget. This paper integrates these findings by means of a computer simulation model. The model consists of three modules which respectively describe the dynamics of litter on the ground, the dynamics of litter within termite mounds and how these in turn influence nutrient loads within the habitat. The outputs of the model suggest that this litter harvesting termite plays an important role in the nutrient dynamics of the area and it provides an estimate of the unmeasured variable, litter consumed in mounds by termites, which is consistent with measurements for other termite species with similar feeding habits.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02347821
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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