Learn More
To determine the usefulness of conventional pituitary irradiation in childhood Cushing's disease, we reviewed the results of this treatment in 15 patients. Twelve were cured (mean plasma cortisol of less than 10 microgram per deciliter and 24-hour urinary 17-hydroxycorticosteroid excretion of less than 7 mg per gram of creatinine) within 18 months, and 10(More)
The aim of the present experiments was to determine the role of insulin and glucagon in the regulation of basal glucose production in dogs fasted overnight. A deficiency of either or both pancreatic hormones was achieved by infusin somatostatin (1 mug/kg per min), a potent inhibitor of both insulin and glucagon secretion, alone or in combination with(More)
Thyroid hormones are concentrated, retained, and metabolized in discrete neural systems in rat brain. To determine how iodothyronine requirements of brain compare with those of other thyroid hormone-dependent tissues, we measured effects of chronic thyroid hormone deficiency or excess on brain iodothyronine economy and particularly on the intracerebral rate(More)
This study was undertaken to determine what factors control the conversion of thyroxine (T(4)) to triiodothyronine (T(3)) in rat liver under conditions approximating those found in vivo. Conversion of T(4) to T(3) was studied in the isolated perfused rat liver, a preparation in which the cellular and structural integrity is maintained and that can perform(More)
The complexity of the process of gluconeogenesis makes it very difficult to study in vivo. Of the many approaches used to study this process, none have proven ideal. The arterial-hepatic venous catheterization technique can provide accurate determination of the net splanchnic uptake of the various gluconeogenic precursors but gives no information as to(More)
The effects of fasting and streptozotocin-induced diabetes on renal T3 production were studied in the isolated perfused rat kidney. Kidneys were perfused for 1 h at 37 C and pH 7.4 with two perfusion media, containing different oncotic agents (BSA and a modified collagen product, Haemaccel) and with widely varying free T4 concentrations [15.6 ng/dl (200 pM)(More)