PERMEABILITY OF CAPILLARIES TO PLASMA LIPOIDS
نویسندگان
چکیده
منابع مشابه
Permeability of Capillaries to Plasma Lipoids.
It has been rather generally assumed, chiefly because normal urine is practically free from lipoids (9, 10, 11) that the capillaries are impermeable to plasma lipoids. However, no serious attempts seem to have been made to test this assumption, in spite of its important bearing on the question of plasma colloid osmotic pressure. In order to determine whether lipoids diffuse through the capillar...
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The pathway followed by macromolecules across the wall of visceral capillaries has been studied by using a set of tracers of graded sizes, ranging in diameter from 100 A (ferritin) to 300 A (glycogen). Polysaccharide particles, i.e. dextran 75 (mol wt approximately 75,000; diam approximately 125 A), dextran 250 (mol wt 250,000; diam approximately 225 A), shellfish glycogen (diam approximately 2...
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Whale skeletal muscle myoglobin (mol wt 17,800; molecular dimensions 25 x 34 x 42 A) was used as a probe molecule for the pore systems of muscle capillaries. Diaphragms of Wistar-Furth rats were fixed in situ at intervals up to 4 h after the intravenous injection of the tracer, and myoglobin was localized in the tissue by a peroxidase reaction. Gel filtration of plasma samples proved that myogl...
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In this study we attempted to identify a morphologic counterpart of the small pore of muscle capillaries. The existence of such a pore has been postulated by physiologists to explain the permeability of muscle capillaries to small macromolecules. We injected mice intravenously with microperoxidase (MP) and fixed specimens of diaphragm at intervals of 0-250 s after the injection to localize the ...
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VARGAS, FERNANDO, AND JOHN A. JOHNSON, Permeability of rabbit heart capillaries to nonelectrolytes. Am. J. Physiol. 2 r 3(1> : 87-93. 1967. -Isolated perfused rabbit hearts were used to study the permeability characteristics of their capillaries with respect to inulin, raffinose, sucrose, and urea, The method used involved a continuous weighing of the isolated perfused heart. Each heart was iso...
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ژورنال
عنوان ژورنال: Journal of Clinical Investigation
سال: 1933
ISSN: 0021-9738
DOI: 10.1172/jci100554