Abstract
Paired determinations of the hydraulic conductivity (Lp) of individually perfused capillaries in frog mesentery were measured at 22-25 and 5-8°C. The mean value of the ratio of the hydraulic conductivity at 22-25 to that at 5-8°C was 1.76±0.22 (SE) in 10 capillaries perfused with albumin in the Ringer perfusate and 1.81±0.11 in six capillaries perfused with Ringer alone. The ratio of Lp can be accounted for in terms of a 1.60-fold increase in water viscosity between 22-25 and 5-8°C. The results conform to the hypothesis that capillary wall is invariant with temperature; models of the water pathway that imply a change in the number of pathways or a change in pathway structure with temperature are incompatible with these results. Temperature gradients across the tissue are negligible in these experiments; calculations show that in the presence of temperature gradients, which occur during tissue cooling or rewarming, transcapillary water flows due to thermoosmosis are likely to occur.
| Original language | English (US) |
|---|---|
| Journal | American Journal of Physiology - Heart and Circulatory Physiology |
| Volume | 9 |
| Issue number | 1 |
| State | Published - 1981 |
Fingerprint
ASJC Scopus subject areas
- Physiology
Cite this
Effect of temperature on hydraulic conductivity of single capillaries. / Curry, F. E.
In: American Journal of Physiology - Heart and Circulatory Physiology, Vol. 9, No. 1, 1981.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of temperature on hydraulic conductivity of single capillaries
AU - Curry, F. E.
PY - 1981
Y1 - 1981
N2 - Paired determinations of the hydraulic conductivity (Lp) of individually perfused capillaries in frog mesentery were measured at 22-25 and 5-8°C. The mean value of the ratio of the hydraulic conductivity at 22-25 to that at 5-8°C was 1.76±0.22 (SE) in 10 capillaries perfused with albumin in the Ringer perfusate and 1.81±0.11 in six capillaries perfused with Ringer alone. The ratio of Lp can be accounted for in terms of a 1.60-fold increase in water viscosity between 22-25 and 5-8°C. The results conform to the hypothesis that capillary wall is invariant with temperature; models of the water pathway that imply a change in the number of pathways or a change in pathway structure with temperature are incompatible with these results. Temperature gradients across the tissue are negligible in these experiments; calculations show that in the presence of temperature gradients, which occur during tissue cooling or rewarming, transcapillary water flows due to thermoosmosis are likely to occur.
AB - Paired determinations of the hydraulic conductivity (Lp) of individually perfused capillaries in frog mesentery were measured at 22-25 and 5-8°C. The mean value of the ratio of the hydraulic conductivity at 22-25 to that at 5-8°C was 1.76±0.22 (SE) in 10 capillaries perfused with albumin in the Ringer perfusate and 1.81±0.11 in six capillaries perfused with Ringer alone. The ratio of Lp can be accounted for in terms of a 1.60-fold increase in water viscosity between 22-25 and 5-8°C. The results conform to the hypothesis that capillary wall is invariant with temperature; models of the water pathway that imply a change in the number of pathways or a change in pathway structure with temperature are incompatible with these results. Temperature gradients across the tissue are negligible in these experiments; calculations show that in the presence of temperature gradients, which occur during tissue cooling or rewarming, transcapillary water flows due to thermoosmosis are likely to occur.
UR - http://www.scopus.com/inward/record.url?scp=0019364752&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0019364752&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0019364752
VL - 9
JO - American Journal of Physiology - Renal Fluid and Electrolyte Physiology
JF - American Journal of Physiology - Renal Fluid and Electrolyte Physiology
SN - 1931-857X
IS - 1
ER -