NDLI: Fatty Acid Transport in Cartilaginous Fish: Absence of Albumin and Possible Utilization of Lipoproteins

Content Provider	Springer Nature Link
Author	Metcalf, V. J. Gemmell, N. J.
Copyright Year	2006
Abstract	There are conflicting reports over whether albumin is present in the Chondrichthyes. In addition, it is unknown whether given their low levels of extrahepatic β-oxidation, there is actually a need for a plasma FFA transport system. We examined the plasma of several Chondrichthyan species, including representatives of both the Holocephali and the Neoselachii using a combination of agarose gel electrophoresis, [14C]palmitic acid binding, SDS-PAGE, and Oil Red O staining following cellulose acetate electrophoresis. None of the eight species examined had a major acidic palmitate-binding protein with the characteristics of albumin and they all lacked proteins with the mass of albumin, 66 kDa. Palmitate was bound to specific plasma proteins in all elasmobranch species examined and these palmitate-binding proteins resembled lipoproteins based on their diffuse and variable mobilities and Oil Red O staining. These lipoproteins are potentially LDL and VLDL based on their migration positions. Albumin appears to be absent from Chondrichthyan plasma and lipoproteins bind LCFA in its absence.
Starting Page	55
Ending Page	64
Page Count	10
File Format	PDF
ISSN	09201742
Journal	Fish Physiology and Biochemistry
Volume Number	31
Issue Number	1
e-ISSN	15735168
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-03-22
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	albumin apolipoprotein cartilaginous fish Chondrichthyes elasmobranch fatty acid transport high-density lipoprotein lipid low-density lipoprotein very low-density lipoprotein Animal Biochemistry Hydrobiology Zoology Animal Anatomy / Morphology / Histology Animal Physiology
Content Type	Text
Resource Type	Article
Subject	Physiology Medicine Biochemistry Aquatic Science

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