Aglomerularism in Antarctic Fish

Urine formation in antarctic bony fish does not involve glomerular filtration. Evidence for aglomerularism came from both direct observation of kidney serial sections by light microscopy and the low concentrations of inulin labeled with carbon-14 that were excreted into the urine when this renal cle...

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Bibliographic Details
Published in:Science
Main Authors: Dobbs, Gary H., Lin, Yuan, DeVries, Arthur L.
Format: Article in Journal/Newspaper
Language:English
Published: American Association for the Advancement of Science (AAAS) 1974
Subjects:
Antarctic
Antarc*
Online Access:http://dx.doi.org/10.1126/science.185.4153.793
https://www.science.org/doi/pdf/10.1126/science.185.4153.793
Description
Summary:Urine formation in antarctic bony fish does not involve glomerular filtration. Evidence for aglomerularism came from both direct observation of kidney serial sections by light microscopy and the low concentrations of inulin labeled with carbon-14 that were excreted into the urine when this renal clearance tracer was injected into the bloodstream via a cannula implanted in the caudal vein. Aglomerularism most likely prevents urinary loss of glycoproteins with biological antifreeze properties.

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