Albumin concentration and colloid osmotic pressure of interstitial fluid collected by wick technique from rat skeletal muscle. Evaluation of the method
- 1 May 1981
- journal article
- research article
- Published by Wiley in Acta Physiologica Scandinavica
- Vol. 112 (1), 1-5
- https://doi.org/10.1111/j.1748-1716.1981.tb06775.x
Abstract
Interstitial fluid from rat skeletal muscle has been collected by multifilamentous nylon wicks. The wicks consisted of 5–600 single filaments and had an overall diameter of 1–2 mm. The wicks were implanted in the muscle by means of a mending needle. The wicks were removed at various times after implantation, and colloid osmotic pressure (COP) or albumin concentration in wick fluid was measured. The fluid contained in the wick had a COP of 8–10 mmHg and an albumin concentration about 1/3 that of plasma. COP in wicks preloaded with serum or serum/saline dilution was higher after 1/2 and 1 h of implantation, but was nearly identical to that of saline soaked wicks after 2 h implantation. Intravenous injection of labelled albumin showed that wick implantation caused a marked leakage of proteins from plasma to the wick. However, 1/2 to 1 h after implantation the leakage was markedly reduced. The initial leakage of albumin could be diminished with protease inhibitor (aprotinin), but not with prostaglandin‐, serotonin‐or histamin antagonists. The experiments show that wick fluid colloid osmotic pressure reflects interstitial fluid colloid osmotic pressure, while the protein composition of wick fluid may not be identical to that of undisturbed interstitial fluid.Keywords
This publication has 7 references indexed in Scilit:
- Interstitial fluid volume, colloid osmotic and hydrostatic pressures in rat skeletal muscle. Effect of venous stasis and muscle activityActa Physiologica Scandinavica, 1981
- Interstitial fluid pressure in rats measured with a modified wick techniqueMicrovascular Research, 1977
- Protein concentration and colloid osmotic pressure of interstitial fluid collected by the wick techniqueMicrovascular Research, 1977
- Protein Concentration and Colloid Osmotic Pressure of Rat Skeletal Muscle Interstitial FluidActa Physiologica Scandinavica, 1974
- Measurement of Colloid Osmotic Pressure of Interstitial FluidActa Physiologica Scandinavica, 1974
- A Colloid Osmometer for Small Fluid SamplesActa Physiologica Scandinavica, 1974
- Protein Concentration of Interstitial Fluid Collected from Rat Skin by a Wick MethodActa Physiologica Scandinavica, 1973