TY - JOUR
T1 - Regulation of lipid metabolism in poikilothermic vertebrates
AU - Sheridan, Mark A.
N1 - Funding Information:
I would also like to acknowledge the National Science Foundation, U.S.A. (DCB 8901380 and IBN 9305544) for the support of some of the work presented in this study.
PY - 1994/4
Y1 - 1994/4
N2 - Patterns of lipid storage and utilization reflect the special life histories of the animal group. Poikilothermic vertebrates (fish, amphibians, reptiles) have evolved a number of life history patterns (smoltification, metamorphosis, hibernation) which present problems for lipid storage regulation. A general theme among poikilotherms is to store lipids among several sites (mesenteric fat, liver, muscle) as opposed to a single depot type (adipose tissue) as in homeotherms; lipids are stored primarily as triacylglycerols, but various other lipid classes also are stored and constituent fatty acids tend to be more complex (longer chain, polyunsaturated). Lipid storage is influenced by de novo lipid synthesis and by lipid deposition from various plasma lipoproteins. Lipid accumulation generally occurs in most poikilotherms during periods of feeding when plasma insulin levels are elevated. Lipid mobilization is controlled by an intracellular lipase enzyme. Lipid depletion occurs during transitional and non-feeding periods and is especially apparent during salmonid smoltification and amphibian metamorphosis.
AB - Patterns of lipid storage and utilization reflect the special life histories of the animal group. Poikilothermic vertebrates (fish, amphibians, reptiles) have evolved a number of life history patterns (smoltification, metamorphosis, hibernation) which present problems for lipid storage regulation. A general theme among poikilotherms is to store lipids among several sites (mesenteric fat, liver, muscle) as opposed to a single depot type (adipose tissue) as in homeotherms; lipids are stored primarily as triacylglycerols, but various other lipid classes also are stored and constituent fatty acids tend to be more complex (longer chain, polyunsaturated). Lipid storage is influenced by de novo lipid synthesis and by lipid deposition from various plasma lipoproteins. Lipid accumulation generally occurs in most poikilotherms during periods of feeding when plasma insulin levels are elevated. Lipid mobilization is controlled by an intracellular lipase enzyme. Lipid depletion occurs during transitional and non-feeding periods and is especially apparent during salmonid smoltification and amphibian metamorphosis.
KW - Lipid metabolism
KW - Regulation
UR - http://www.scopus.com/inward/record.url?scp=0028281451&partnerID=8YFLogxK
U2 - 10.1016/0305-0491(94)90176-7
DO - 10.1016/0305-0491(94)90176-7
M3 - Short survey
AN - SCOPUS:0028281451
SN - 0305-0491
VL - 107
SP - 495
EP - 508
JO - Comparative Biochemistry and Physiology -- Part B: Biochemistry and
JF - Comparative Biochemistry and Physiology -- Part B: Biochemistry and
IS - 4
ER -