Biomedical subjects
Publications and source records attributed to F Thervet.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Thirty-seven insulin-dependent diabetic patients were tested for symptoms of hypoglycemia, cardiac autonomic neuropathy (i.e., heart rate variation during deep breathing, Valsalva maneuver, immediate heart rate response to standing), and isoproterenol sensitivity (defined as the dose of isoproterenol required to increase heart rate by 25 beats/min: I25). Tests of cardiac autonomic neuropathy showed no relation to hypoglycemic symptoms. On the contrary, a clear relationship could be established between isoproterenol sensitivity and adrenergic symptoms of hypoglycemia. Diabetic patients with decreased response to isoproterenol had fewer adrenergic symptoms, perceived hypoglycemia at a lower blood glucose level, and had more hypoglycemic accidents. Symptoms most related to isoproterenol sensitivity were tremor, sweaty palms, and hunger. With the isoproterenol-sensitivity test a distinction could be made between the groups at high (I25 greater than 3 micrograms) and low (I25 less than 3 micrograms) risk for hypoglycemic accidents. We suggest that the isoproterenol-sensitivity test could be used to identify diabetic patients at increased risk for hypoglycemia.
Explore the source record for details and available documents.
Lp(a) is a lipoprotein present in all individuals in concentrations that are genetically determined. Its structure is characterized by the presence of an apoprotein with a high carbohydrate content called apoprotein a. Since 1972, numerous concordant data have endowed Lp(a) with a high risk of atherogenesis. This risk applies to the coronary and cervico-encephalic arteries. For the latter, Lp(a) even is a lipid parameter regarded as a major risk factor. The origin and metabolism of Lp(a) are little known, by they seem to differ from those of low-density lipoproteins. Its specific apoprotein of Lp(a). At the moment, there is no simple dietetic or medicinal treatment that can lower substantially the serum level of Lp(a).
Plasma levels of vasopressin (AVP) were measured in ten insulin-dependent diabetic patients before and during intravenous administration of hypertonic glucose. Plasma glucose and plasma osmolality increased from 12.4 +/- 1.2 to 47.0 +/- 2.3 mmol/l and from 293 +/- 2.0 to 307 +/- 2.8 mosm/kg respectively. Plasma vasopressin increased in parallel from 5.6 +/- 0.6 to 7.7 +/- 0.6 pg/ml. The present results demonstrate that hyperglycemia may be an effective stimulus for AVP secretion in insulin-deficient diabetics.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.