...Ahmad A. K. Hassan; G. Carter; J. E. Tooke 1. Postural vasoconstriction in the foot was examined in 15 women during the menstrual, follicular and luteal phases of the menstrual cycle, and in 13 age-matched men on two separate occasions, in a constant-temperature environment (22°C). 2. Skin blood...

...M. D. Flynn; A. A. K. Hassan; J. E. Tooke 1. We have applied the technique of television capillary microscopy to make direct measurements of nutritional capillary flow in the toe nailfold (i) at heart level and (ii) in a near standing position, with the foot 96 cm below heart level. By indirect...

...Ahmad A. K. Hassan; J. E. Tooke 1. The mechanism of postural vasoconstriction in the skin of the foot was examined in 102 healthy subjects by using laser Doppler flowmetry. 2. In 45 subjects, when one foot was lowered 50 cm below heart level and the other foot kept horizontal, blood flow...

... 1 1984 © 1984 The Biochemical Society and the Medical Research Society 1984 arterial occlusive disease blood flow cadmium telluride detectors circulation continuous recording foot isotope wash-out technique local sympathetic tone Clinical Science (1984) 67, 89-95 89 Nocturnal...

.... 2. In the foot, local cold (15°C) delayed the onset and reduced by about 92% the vasodilatation during release of sympathetic vasoconstrictor tone caused by body heating. 3. Similar results were obtained in the hand exposed to cold (15°C) but the suppression of the reflex vasodilatation in response...