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We acquired Positron emission tomography with 18-F-deoxyglucose (FDG-PET) and anatomical MRI in 30 never-previously medicated psychotic adolescents (ages 13-20). (FDG-PET) was obtained at baseline and after 8-9 weeks of a randomized double-blind trial of either olanzapine or haloperidol. Neuropsychological tests of executive function were also obtained.(More)
The purpose of the current study was to examine neuropsychological functioning in a group of never-medicated first-break adolescents with psychosis. It is the first report of cognition in a sample of adolescents with psychosis in which all patients were drug-naive. Twenty-nine adolescent patients (mean age = 16.07; SD = 2.00; 15 male and 14 female patients)(More)
Monovision, the use of a monocular addition for near viewing, is a clinical technique sometimes used to correct presbyopia. This technique attempts to maintain binocular function while requiring a degree of central suppression. We examined suppression behavior in spectacle monovision as a function of addition power. Suppression behavior was determined by(More)
Studies of the effect of thyroxine replacement therapy on bone mineral density have given conflicting results; the reductions in bone mass reported by some have prompted recommendations that prescribed doses of thyroxine should be reduced. We have examined the effect of long-term thyroxine treatment in a large homogeneous group of patients; all had(More)
Specimens of cholesteatoma were removed at surgery from five patients who had evidence of bone resorption. Parathyroid-hormone-related protein (PTHrP) was detected, by radioimmunoassay, in conditioned media from keratinocyte cultures derived from all five samples. Concentrations of PTHrP in conditioned media from secondary cultures were higher for the(More)
Parathyroid-hormone-related protein (PTHrP) messenger RNA was identified by in-situ hybridisation in seven tumours complicated by hypercalcaemia. In addition, among samples from normocalcaemic patients, it was commonly found in tumours of types frequently complicated by hypercalcaemia but was not found in tumours that are rarely complicated by(More)
Insulin-induced hypoglycaemia caused a threefold rise in plasma-arginine-vasopressin concentration (to 4-36 +/- 0-77 pmol/1) in ten subjects who had normal posterior-pituitary function. Plasma-arginine vasopressin reached a peak 30 min after injection of insulin. Plasma concentrations of arginine vasopressin obtained with hypoglycaemia were similar to those(More)
Hypercalcaemia in malignancy is a major clinical problem. It contributes significantly to morbidity and mortality and can present difficult diagnostic and management dilemmas. Direct bony invasion by tumour cells rather than humorally mediated hypercalcaemia is probably the most common cause of malignant hypercalcaemia. Yet even in this situation the(More)