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  • 1
    Electronic Resource
    Electronic Resource
    Combined 24-hour recording of esophageal pH and pressure (1991)
    Springer
    Digestive diseases and sciences 36 (1991), S. 98S 
    Details
    ISSN: 1573-2568
    Keywords: esophagus ; pH ; pressure ; 24-hr recording
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Twenty-four-hour ambulatory recording of esophageal pH and pressure is a newly developed technique that has the potential of proving that a patient's noncardiac chest pain is of esophageal origin (esophageal reflux or motor abnormality). Until now four groups described their experiences with application of the technique in the work-up of noncardiac chest pain. It is now clear that the diagnostic yield of the technique in this syndrome is rather limited, especially when the incidence of pain episodes is low. Reflux appears to be a more common cause of chest pain than esophageal motor disorders. Complete quantitative analysis of the 24-hr motility data by hand is very time-consuming, so that automated, computerized data analysis is a prerequisite for more widespread clinical use of the technique.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01300604
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Three-dimensional study of the intercellular gas space inVigna radiata hypocotyl (1997)
    Springer
    Protoplasma 196 (1997), S. 69-77 
    Details
    ISSN: 1615-6102
    Keywords: Air space ; Cell wall ; Elastomer ; Intercellular space ; Microcasting ; Mung bean
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Infiltration of the intercellular gas space is often used in physiological experimentation either to reach internal targets with various biochemical probes or to extract molecules from the apoplast. Such investigations require a good understanding of the organization and structure of the gas space system. This system was studied in the mung bean hypocotyl using different approaches, in particular internal microcasting of seedlings. Results show the presence of two continuous, more or less independent, networks, one in the cortical parenchyma, the other in the pith. The narrow tubules of one or the other network connect all cells within a tissue. Infiltration with physiological solutions does not significantly disturb living cells, at least in the short term, but opens a large field for experimental applications.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01281060
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Voluntary suppression of defecation delays gastric emptying (1993)
    Springer
    Digestive diseases and sciences 38 (1993), S. 832-836 
    Details
    ISSN: 1573-2568
    Keywords: colon ; constipation ; gastric emptying ; outet obstruction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We wished to test the hypothesis that colonic loading with fecal material leads to delayed gastric emptying. Twelve healthy male volunteers were studied. Each of these subjects went through two randomized study periods of four days. In one of these, the subjects defecated upon urge, in the other period defecation was voluntarily suppressed. Gastric emptying of a semisolid meal (mashed potatoes) was measured with the noninvasive applied potential tomography technique. On day 3 no significant changes in gastric emptying were found, but on day 4 the emptying rate had decreased from 85.8±11.0%/hr (mean±sem) to 70.3±10.9%/hr (P〈0.05) and the T50 had increased from 38.5±3.4 min to 46.2±4.0 min (P〈0.025). The duration of the lag phase (4.1±1.5 min) was not significantly altered by suppression of defecation. Our conclusion is that voluntary suppression of defecation delays gastric emptying in normal subjects. This “cologastric brake” may be involved in the pathogenesis of upper abdominal symptoms in constipated patients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01295908
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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