Document Detail


Hydrostatic pressures in glomeruli and renal vasculature of the hagfish, Eptatretus stouti.
MedLine Citation:
PMID:  3746194     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Hydrostatic pressures in the renal vasculature of hagfish have been studied. Estimates of the blood colloid osmotic pressure (COP) have been made. In blood vessels supplying the renal corpuscles, the average hydrostatic pressure is about 1 kPa. The average hydrostatic pressure falls to a value of 0.04 kPa within the postcardinal vein efferent to the renal corpuscle. Within the glomerular capillaries the hydrostatic pressure averages 0.21 kPa. Since the blood COP averages about 1.4 kPa, it is clear that glomerular filtration in the hagfish is not underlain by the hydrostatic pressure of the arterial pulse. In some blood vessels efferent to the renal corpuscles, hydrostatic pressure may be as high as in the afferent supply. Evidence is presented that the glomerular capillaries are shunted by this high pressure vascular pathway.
Authors:
J A Riegel
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of experimental biology     Volume:  123     ISSN:  0022-0949     ISO Abbreviation:  J. Exp. Biol.     Publication Date:  1986 Jul 
Date Detail:
Created Date:  1986-10-06     Completed Date:  1986-10-06     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0243705     Medline TA:  J Exp Biol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  359-71     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Colloids
Fishes
Glomerular Filtration Rate
Hydrostatic Pressure
Kidney / physiology
Kidney Glomerulus / physiology*
Osmotic Pressure
Renal Circulation*
Chemical
Reg. No./Substance:
0/Colloids

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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