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Induction of microsomal 1-acylglycerophosphocholine acyltransferase by peroxisome proliferators in rat kidney; co-induction with peroxisomal beta-oxidation. 1989

Y Kawashima, and T Matsunaga, and A Hirose, and T Ogata, and H Kozuka
Faculty of Pharmaceutical Sciences, Toyama Medical and Pharmaceutical University, Japan.

Induction of microsomal 1-acyl-glycerophosphocholine (GPC) acyltransferase in rat tissues by four peroxisome proliferators, clofibric acid, tiadenol, DEHP and PFOA, was examined. Among the nine tissues examined, kidney, liver and intestinal mucosa responded to the challenges by the peroxisome proliferators to induce the enzyme. The treatment of rats with various dose of clofibric acid, tiadenol, DEHP or PFOA resulted in an induction of kidney microsomal 1-acyl-GPC acyltransferase in a dose-dependent manner. Despite the structural dissimilarity of peroxisome proliferators, the induction of microsomal 1-acyl-GPC acyltransferase was highly correlated with the induction of peroxisomal beta-oxidation. The activity of microsomal 1-acyl-GPC acyltransferase was not affected by changes in hormonal (adrenalectomy, diabetes, hyperthyroidism and hypothyroidism) and nutritional (starvation, starvation-refeeding, fat-free-diet feeding and high-fat-diet feeding) states. The induction of renal microsomal 1-acyl-GPC acyltransferase was seen in mice subsequent to the administration of clofibric acid and tiadenol and in guinea pigs subsequent to the administration of tiadenol. These results may indicate that kidney microsomal 1-acyl-GPC acyltransferase is a highly specific parameter responsive to the challenges by peroxisome proliferators and may suggest that the possibility that the inductions by peroxisome proliferators of microsomal 1-acyl-GPC acyltransferase and peroxisomal beta-oxidation in kidney are co-regulated.

UI MeSH Term Description Entries
D007668 Kidney Body organ that filters blood for the secretion of URINE and that regulates ion concentrations. Kidneys
D008243 1-Acylglycerophosphocholine O-Acyltransferase An enzyme localized predominantly within the plasma membrane of lymphocytes. It catalyzes the transfer of long-chain fatty acids, preferentially unsaturated fatty acids, to lysophosphatides with the formation of 1,2-diacylglycero-3-phosphocholine and CoA. EC 2.3.1.23. 1-Acylglycerophosphocholine Acyltransferase,Acyl CoA Lysolecithin Acyltransferase,Lysolecithin Acyltransferase,Acyl-CoA-1-Acylglycero-3-Phosphocholine-O-Acyltransferase,Lysophosphatidylcholine Acyltransferase,Lysophosphatidylcholine-Palmitoyl CoA Acyltransferase,Lysophospholipid Acyltransferase,1 Acylglycerophosphocholine Acyltransferase,1 Acylglycerophosphocholine O Acyltransferase,Acyl CoA 1 Acylglycero 3 Phosphocholine O Acyltransferase,Acyltransferase, 1-Acylglycerophosphocholine,Acyltransferase, Lysolecithin,Acyltransferase, Lysophosphatidylcholine,Acyltransferase, Lysophosphatidylcholine-Palmitoyl CoA,Acyltransferase, Lysophospholipid,CoA Acyltransferase, Lysophosphatidylcholine-Palmitoyl,Lysophosphatidylcholine Palmitoyl CoA Acyltransferase,O-Acyltransferase, 1-Acylglycerophosphocholine
D008297 Male Males
D008830 Microbodies Electron-dense cytoplasmic particles bounded by a single membrane, such as PEROXISOMES; GLYOXYSOMES; and glycosomes. Glycosomes,Glycosome,Microbody
D008861 Microsomes Artifactual vesicles formed from the endoplasmic reticulum when cells are disrupted. They are isolated by differential centrifugation and are composed of three structural features: rough vesicles, smooth vesicles, and ribosomes. Numerous enzyme activities are associated with the microsomal fraction. (Glick, Glossary of Biochemistry and Molecular Biology, 1990; from Rieger et al., Glossary of Genetics: Classical and Molecular, 5th ed) Microsome
D008862 Microsomes, Liver Closed vesicles of fragmented endoplasmic reticulum created when liver cells or tissue are disrupted by homogenization. They may be smooth or rough. Liver Microsomes,Liver Microsome,Microsome, Liver
D010084 Oxidation-Reduction A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471). Redox,Oxidation Reduction
D011919 Rats, Inbred Strains Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations or by parent x offspring matings carried out with certain restrictions. This also includes animals with a long history of closed colony breeding. August Rats,Inbred Rat Strains,Inbred Strain of Rat,Inbred Strain of Rats,Inbred Strains of Rats,Rat, Inbred Strain,August Rat,Inbred Rat Strain,Inbred Strain Rat,Inbred Strain Rats,Inbred Strains Rat,Inbred Strains Rats,Rat Inbred Strain,Rat Inbred Strains,Rat Strain, Inbred,Rat Strains, Inbred,Rat, August,Rat, Inbred Strains,Rats Inbred Strain,Rats Inbred Strains,Rats, August,Rats, Inbred Strain,Strain Rat, Inbred,Strain Rats, Inbred,Strain, Inbred Rat,Strains, Inbred Rat
D002210 Caprylates Derivatives of caprylic acid. Included under this heading are a broad variety of acid forms, salts, esters, and amides that contain a carboxy terminated eight carbon aliphatic structure. Caprylate,Octanoates,Caprylic Acids,Octanoic Acids,Acids, Caprylic,Acids, Octanoic
D002995 Clofibric Acid An antilipemic agent that is the biologically active metabolite of CLOFIBRATE. Clofibrinic Acid,2-(4-Chlorophenoxy)-2-methylpropionic Acid,NSC-1149,p-Chlorophenoxyisobutyrate,p-Chlorophenoxyisobutyric Acid,NSC 1149,NSC1149

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