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Results for “Capillary Permeability”

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PubMedDate not supplied

[Effect of veinotonyl 75 on the capillary permeability test using technetium albumin in cyclic orthostatic edemas].

The purpose of this trial was to evaluate the clinical effect of Veinotonyl 75 in 42 women, 42 +/- 11 years old, with orthostatic cyclic edema. The main evaluation criterion was the result of a capillary filtration test with 99 mTc albumin which was performed at day 0 and at day 30 after treatment. At day 0, all the women had abnormal results ie an albumin retention > or = 8% (mean: 14.3% +/- 4.8%). At day 30, 75% of the patients were normalized in the Veinotonyl 75 group versus 38% in the placebo group (p < 0.02). The albumin retention in Veinotonyl 75 group was under the pathological level (mean: 5.2% +/- 4.8%) while it was over in the placebo group (mean: 9.4% +/- 7%). This study confirms the activity of Veinotonyl 75 on capillar protein hyperfiltration and on return venous circulation.

Adult↗
PubMed1988

Capillary permeability to endogenous macromolecules in the equine digit.

Microvascular permeability characteristics were evaluated in digits of 7 adult horses. After capillaries were isolated and an extracorporeal perfusion circuit for the digit was established, a lymphatic vessel draining the distal portion of the phalangeal region was cannulated at the level of the coronary band. Venous pressure was increased in a stepwise manner, and lymph flow, lymph protein concentration (Cl), and plasma protein concentration (Cp) were determined after measured variables were allowed to reach steady state. Lymph-to-plasma protein concentration ratios (Cl/Cp) and lymph and plasma oncotic pressures were determined from samples collected during steady state. The osmotic reflection coefficient was determined after Cl/Cp became constant, regardless of increasing lymph flow, and was expressed as 1--Cl/Cp. The osmotic reflection coefficient for the digit was 0.67. Seemingly, the microvasculature bed of the digit was relatively permeable and could maintain only 67% of the endogenous macromolecules within the vasculature.

Animals↗
PubMed2004

What determines glomerular capillary permeability?

There have been exciting recent advances in our understanding of the structural and molecular biology of the glomerular slit diaphragm, as described in a report in this issue of the JCI. These findings, combined with data on the permeability of the basement membrane and evidence that the endothelium may be a more important barrier than often supposed, are allowing a clearer understanding to emerge of how the 3 parts of the glomerular capillary wall jointly determine its functional properties.

Animals↗