Expression of CA III in rodent models of obesity.
To achieve a better understanding of the biochemical basis of obesity, we have undertaken comparative analyses of adipose tissue of lean and obese mice. By two-dimensional gel analysis, carbonic anhydrase-III (CA III) has been identified as a major constituent of murine adipose tissue. Quantitative comparisons of CA III protein and mRNA levels indicate that this enzyme is expressed at lower levels in adipose tissue from animals that were either genetically obese or had experimentally induced obesity compared to levels in the corresponding lean controls. This decrease in CA III expression was unique to adipose tissue, since other CA III-containing organs and tissues did not show a change when lean and obese animals were compared. Additionally, levels of CA III in adipose tissue from obese animals responded to acute changes in energy balance of the animal. These results are discussed in light of possible metabolic roles for CA III.
California Biotechnology, Inc. and Metabolic Biosystems, Mountain View 94043.
L W
LW
Stanton
P A
PA
Ponte
R T
RT
Coleman
M A
MA
Snyder
D000273:Adipose Tissue / Q000201:enzymology*; D000591:Amino Acid Isomerases / Q000235:genetics; D000595:Amino Acid Sequence; D000818:Animals; D002256:Carbonic Anhydrases / Q000235:genetics* / Q000302:isolation & purification; D002352:Carrier Proteins / Q000235:genetics; D003524:Cyclosporins / Q000378:metabolism; D003600:Cytosol / Q000201:enzymology; D015180:Electrophoresis, Gel, Two-Dimensional; D005215:Fasting; D015870:Gene Expression; D007527:Isoenzymes / Q000235:genetics* / Q000302:isolation & purification; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D008820:Mice, Obese; D008969:Molecular Sequence Data; D008970:Molecular Weight; D009765:Obesity / Q000139:chemically induced / Q000201:enzymology / Q000235:genetics* / Q000503:physiopathology; D019696:Peptidylprolyl Isomerase; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D012970:Sodium Glutamate
D002352:Carrier Proteins; D003524:Cyclosporins; D007527:Isoenzymes; D012333:RNA, Messenger; D002256:Carbonic Anhydrases; D000591:Amino Acid Isomerases; D019696:Peptidylprolyl Isomerase; D012970:Sodium Glutamate