Intestinal glutamine metabolism.
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Biomedical subjects
Publications and source records attributed to M Plauth.
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A new model of isolated intestinal perfusion could be established with fluorocarbon (FC-43) as artificial oxygen carrier. Morphology, cell metabolism of xenobiotics (phase I and II), as well as the transport of a monosaccharide, were stable for at least 2 h. Without interference with the changing metabolism of erythrocytes in the perfusion medium, the proposed model allows one to investigate exclusively the metabolic function of the perfused organ.
Eight years after the onset of bronchial asthma a 28-year-old woman fell ill with abdominal pain, diarrhoea and rapidly increasing ascites. Increased numbers of eosinophils in the protein-rich ascitic fluid and histologically demonstrated eosinophilic infiltration of the intestinal mucosa, together with the history and symptoms, established the diagnosis of eosinophilic gastroenteritis. The disease proved self-limiting without specific treatment. Within four years of first manifestations there were two short recurrences with rapid regression without specific treatment.
Thirty-eight patients with cirrhosis of the liver and thirty-seven controls were examined by dynamic computer tomography in a prospective study. Time-density difference curves for the liver, spleen, portal vein, aorta and vena cava were treated mathematically ('gamma fit'). Comparison of the values of the difference curves of liver, spleen and portal vein showed significantly lower and delayed peaks in patients with cirrhosis than in normal people. The time-density difference curves of the liver showed a highly significant shallow decline in the presence of cirrhosis. Discriminant analysis of the curve parameters using the spleen showed differentiation between normals and cirrhosis patients of 90.2%, and using the liver curve a separation of 83%. Combining these parameters of liver and spleen curves improved the separation between cirrhotic patients and normals to 94%.
In Europe Reye's syndrome is a rather rare but often fatal disease affecting children and teenagers. Whereas an association with an antecedent viral illness has been documented, our knowledge concerning etiology and pathogeneseis remains sparse. A significant association between salicylate-medication during prodromal illness and RS has well been documented without demonstration of a causal relationship. The metabolic disturbance appears to stem from an acute mitochondrial lesion following a so far not fully understood viral, toxic or multimodal attack. Similar mitochondrial lesions are encountered in hypoglycin- or aflatoxin-intoxication. Consequently the intramitochondrial steps of the urea-cycle are blocked leading to its breakdown in the scene of a tremendous nitrogen-load flooding the organism with ammonia. A number of suspected pathogens are being discussed of which ammonia seems most capable of inducing the neurologic symptoms of RS probably in conjunction with elevated free fatty acids.
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