منابع مشابه
Vasodilator Fibers in the Human Skin.
Reports on vasodilator fibers in the human skin have not been in general agreement concerning either their existence or their relative functional significance (1-6). In a recent review on sympathetic surgery (7), the interruption of vasodilator fibers was cited as a possible cause for the limited benefit that occurs after sympathectomy for certain types of peripheral vascular disease. It seemed...
متن کاملInnervation territories of single sympathetic C fibers in human skin.
Microneurography techniques were used to record action potentials from unmyelinated nerve fibers (C fibers) in the cutaneous fascicles of the peroneal nerve in healthy volunteers. C units were identified by their long latency responses to electrical stimulation of their terminals in the skin. Their responsiveness to mechanical or heat stimuli applied to the skin or to sympathetic reflex provoca...
متن کاملEffect of nicotine on vasoconstrictor and vasodilator responses in human skin vasculature.
Our objective was to test the hypothesis that acute exposure of human skin vasculature to nicotine may have deleterious effects on endothelial function. Vasoconstriction and vasorelaxation in isolated perfused human skin flaps (approximately 8 x 18 cm) derived from dermolipectomy specimens were assessed by studying changes in skin perfusion pressure measured by a pressure transducer, and skin p...
متن کاملIncreased dermal elastic fibers in the tight skin mouse.
OBJECTIVE The tight skin (Tsk-1) mouse has been proposed as a model for systemic sclerosis on the basis of increased accumulation of collagen and glycosaminoglycans in the skin, and by the presence of serum autoantibodies. The genetic basis of the mutation has been identified as a genomic duplication within the fibrillin-1 (Fbn-1) gene that results in a larger than normal Fbn-1 transcript, but ...
متن کاملThe involvement of heating rate and vasoconstrictor nerves in the cutaneous vasodilator response to skin warming.
Slow local skin heating (LH) causes vasodilator responses, some of which are dependent on sympathetic nerve function. It is not known, however, how the rate of LH affects either the sympathetic or the nonadrenergic components of the responses to LH and whether the adrenergic effects of LH depend on tonic sympathetic activity or whether LH stimulates transmitter release. In part 1, cutaneous vas...
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ژورنال
عنوان ژورنال: Journal of Clinical Investigation
سال: 1947
ISSN: 0021-9738
DOI: 10.1172/jci101829