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Biomedical subjects

P Potvliege

Publications and source records attributed to P Potvliege.

At least 19 recordsLinked to original sources
PubMed1977

On the secretagogue effect of dibutyryl cyclic AMP in the rat exocrine pancreas.

DbcAMP greater than or equal to 0.1 mM induces the discharge of exportable enzymes from rat pancreas fragments incubated in vitro. This effect is qualitatively similar to the action of physiological secretagogues acting via hormone receptors: 1) it is accompanied by the appearance of exocytotic images at the acinar cell apex; 2) it is energy dependent but energy supply is low while that required for the carbamylcholine or caerulein response is high and can only be afforded by oxidative phosphorylation; 3) it is calcium dependent, but no alteration of inward or outward calcium movement can be observed; 4) it is altered by agents known to disrupt the microfilamentous microtubular system [41]. However, the secretory response to DbcAMP is quantitatively less than that obtained with hormonal stimuli. A damaging effect of DbcAMP on pancreatic acinar cells is ruled out on histological and biochemical grounds: there is no significant leakage of LDH; protein synthesis, 2-deoxy-D-glucose and L-leucine uptake are unaltered. The secretagogue effect of DbcAMP is reversible, dose-related and specific. It is not mediated by neurotransmitter release or by interaction with their receptors. The evidence presented points to a direct interaction of DbcAMP on the pancreatic acinar cell and suggests the last step of the secretory cycle as the most probable site of action of the nucleotide derivative.

Adrenergic Agonists↗
PubMed1976

Kidney transplantation in primary oxalosis.

A 33 year old patient with primary oxalosis was submitted to cadaver kidney transplantation after 15 months treatment by hemodialysis. During the dialysis period, he developed complete heart block which immediately followed bilateral nephrectomy. The transplant functioned correctly and was found to excrete large amounts of oxalate. Death, which supervened 7 months after transplantation, was due to miliary tuberculosis. The patient's own kidneys and various organs examined post mortem showed extensive oxalate deposits, which were mainly observed in the graft, conducting system of the heart, ocular structures, spleen and pancreas. The problems of managing terminal uremia secondary to primary oxalosis are discussed.

Adult↗
PubMed1975

Staphylococcal scalded skin syndrome in an adult.

The staphylococcal form of toxic epidermal necrolysis or staphylococcal scalded skin syndrome (SSSS) is exceptionally seen in an adult patient. We report a case of SSSS in a 21-year-old male who suffered from a fulminant pneumopathia due to a phage group II Staphylococcus aureus. The onset of that clinical picture in an adult patient is unusual and could be due to a deficient immunity, as previous case reports have emphasized. Unfortunately, the sudden death of our patient did not allow us to investigate his immunological defences.

Adult↗