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Biomedical subjects

J A Glennon

Publications and source records attributed to J A Glennon.

8 recordsLinked to original sources

A possible role for propranolol in the treatment of renal osteodystrophy.

The effect of propranolol upon parathyroid hormone (P.T.H) concentrations was investigated in patients undergoing chronic haemodialysis. 9 patients receiving propranolol for the treatment of hypertension or angina pectoris were compared with 25 similar patients not taking the drug. P.T.H. and alkaline phosphatase concentrations were lower in patients receiving propranolol and there was less radiological evidence of renal osteodystrophy in these patients. Prospective studies are needed to determine whether propranolol may be helpful as an adjunct to other therapy in reversing or preventing renal osteodystrophy.

Adolescent

Transient suppression of growth hormone secretion after chronic ethanol intake.

Fifty-two percent of patients with chronic heavy intake of ethanol had an abnormally low growth hormone (GH) response to propranolo-glucagon. The effect of ethanol is transient, since the GH response was normal in patients studied 2 wk or more after withdrawal of ethanol. The low GH response was not due to a difference in the levels of glucose or insulin. Ethanol probably suppresses the GH response by acting on the hypothalamus or pituitary gland. Along with previous data suggesting transient ACTH deficiency in chronic alcoholic patients, our findings suggest that these patients may have multiple hypothalamic-pituitary deficiencies.

Adult

Symptomatic hypocalcemia following combined calcitonin and mithramycin therapy for hypercalcemia due to malignancy.

Three patients with malignant disease received the usual recommended doses of mithramycin and calcitonin, either concurrently or concomitantly, because of severe life-threatening hypercalcemia. All three patients developed severe, symptomatic hypocalcemia. The mechanisms for this phenomenon are discussed. A possible synergism between calcitonin and mithramycin may prove to be hazardous in such patients and this possibility must be kept in mind when these agents are being considered as a combination treatment for hypercalcemia.

Calcitonin

Pulmonary function studies before and after jejunoileal bypass surgery.

Nine out of twelve obese patients (75%) demonstrated diminished minute ventilation volume (MVV) prior to jejunoileal bypass surgery. Seven out of the nine patients (78%) showed improvement in the MVV as weight reduction ensued following surgery. Other parameters, including arterial blood gases, did not change after weight loss. Weight reduction as a result of jejunoileal bypass surgery brings about an improvement in pulmonary function.

Adult

Galactorrhea in sarcoidosis: dynamic studies of prolactin, growth and gonadotropic hormone levels.

Five of 300 women with sarcoidosis had galactorrhea. Basal prolactin levels were mildly but significantly elevated when compared to controls and sarcoidosis patients without galactorrhea. Prolactin levels responded to thyrotropin releasing hormone and L-dopa administration, but not chlorpromazine. Luteinizing hormone and follicle-stimulating hormone concentrations responded normally to luteinizing hormone-releasing hormone in all sarcoidosis patients studied, as did growth hormone to insulin hypoglycemia. These results indicate that galactorrhea in sarcoidosis is an uncommon phenomenon, probably due to hypothalamic dysfunction and associated with mildly elevated prolactin levels.

Adult