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At least 397 records · Page 22Linked to original sources
PubMed1977

Follow-up report on autism in congenital rubella.

A longitudinal study was conducted of 243 children with congenital rubella. In this sample a high rate of autism and a high rate of recovery were observed. Examination of the data suggested that the rubella virus was the primary etiologic agent. It is hypothesized that the course of autism was that of a chronic infection in which recovery, chronicity, improvement, worsening, and delayed appearance of the autistic syndrome all were found. Other rubella consequences such as blindness, deafness, and cardiac and neuromuscular defects remained present except as modified by operations and prostheses. Degree of mental retardation initially was related to the outcome of autism but shifts in mental retardation over time did not correlate significantly for the group with shift in the autistic symptoms.

Autistic Disorder↗
PubMed1989

Primary renal angiosarcoma mimicking a renal cell carcinoma.

Primary renal angiosarcoma is a very rare malignant tumor that closely mimics the more common renal cell adenocarcinoma (hypernephroma) in radiologic appearance. Both tumors are hypervascular masses and the diagnosis must be confirmed histologically. However, in the presence of a tumor with a capsular blood supply, and in the absence of venous invasion, the diagnosis of renal angiosarcoma may be suggested, especially in a patient with a new onset of consumption coagulopathy.

Carcinoma, Renal Cell↗
PubMed2001

Potential therapeutic targets for treatment of the overactive bladder.

Muscarinic receptor antagonists remain the main therapy for the treatment of the overactive bladder yet severe adverse effects make them unsuitable for a large number of patients. The development of new drugs with novel mechanisms of action for the treatment of this condition is therefore essential. This article considers some of the targets currently under investigation for the development of such compounds. Beta-adrenoceptor agonists and KATP channel openers inhibit detrusor muscle activity and remain targets for drug development. There is also evidence that alpha-adrenoceptor antagonists may be effective in the overactive bladder, but the mechanism involved in this action is unclear. Finally the role of tachykinins in regulating bladder function through both the sensory and the motor innervation make them a potential target for drug development, but as with the the others, a selective action on the bladder must remain the goal of drug development.

Adrenergic alpha-Agonists↗
PubMed2003

Potentiation of 5-hydroxytryptamine (5-HT) responses by a 5-HT uptake inhibitor in pulmonary and systemic vessels: effects of exposing rats to hypoxia.

The aim was to determine whether uptake of 5-hydroxytryptamine (5-HT) by the 5-HT transporter (SERT) modulates contractile responses to 5-HT in rat pulmonary arteries and whether this modulation is altered by exposure of rats to chronic hypoxia (10% oxygen; 8 h/day; 5 days). The effects of the SERT inhibitor, citalopram (100 nM), on contractions to 5-HT were determined in isolated ring preparations of pulmonary artery (intralobar and main) and compared with data obtained in systemic arteries. In intralobar pulmonary arteries citalopram produced a potentiation (viz. an increase in potency, pEC(50)) of 5-HT. The potentiation was endothelium-dependent in preparations from normoxic rats but endothelium-independent in preparations from hypoxic rats. In main pulmonary artery endothelium-independent potentiation was seen in preparations from hypoxic rats but no potentiation occurred in preparations from normoxic rats. In systemic arteries, citalopram caused endothelium-independent potentiation in aorta but no potentiation in mesenteric arteries; there were no differences between hypoxic and normoxic rats. It is concluded that SERT can influence the concentration of 5-HT in the vicinity of the vasoconstrictor receptors in pulmonary arteries. The data suggest that in pulmonary arteries from hypoxic rats, unlike normoxic rats, the SERT responsible for this effect is not in the endothelium and, hence, is probably in the smooth muscle. The data are compatible with reports that, in the pulmonary circulation, hypoxia induces/up-regulates SERT, and hence increases 5-HT uptake, in vascular smooth muscle. The findings may have implications in relation to the suggested use of SERT inhibitors in the treatment of pulmonary hypertension.

Animals↗