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PMID |
Sentence |
1 |
2898264
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The rise in acetyl-CoA synthetase activity catalyzing the primary step of lipogenesis from acetate has been found, while pyruvate dehydrogenase complex activity did not differ from the control and ATP-citrate lyase activity was lowered.
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2 |
2898264
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Hyperlipogenesis in non-insulin dependent diabetes was induced by the activation of cellular energy supply revealed in enhanced 2-oxoglutarate dehydrogenase activity and elevated ATP level, as well as changes in the activity ratio of NADPH supply and utilization and the rise in fructose-1,6-diphosphate, allosteric effector of fatty acid synthetase, which resulted in the increase of the enzyme activity and created wider potentials of NADPH utilization as a reducing equivalent in lipogenesis.
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3 |
9462657
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To elucidate the mechanism of hyperlipidemia observed in OLETF rats, we focused on the production of VLDL by the liver and investigated hepatic messenger RNA (mRNA) levels of microsomal triglyceride transfer protein (MTP), acyl-coenzyme A synthetase (ACS), and apolipoprotein B (apo B), which play important roles in VLDL synthesis and secretion.
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4 |
9462657
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Hepatic ACS activity and mRNA levels, and MTP mRNA levels were also increased in OLETF rats, whereas apo B mRNA levels were similar; these results suggest that the enhanced expression of both ACS and MTP genes associated with visceral fat accumulation before developing insulin resistance may be involved in the pathogenesis of hyperlipidemia in obese animal models with NIDDM.
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5 |
9462657
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To elucidate the mechanism of hyperlipidemia observed in OLETF rats, we focused on the production of VLDL by the liver and investigated hepatic messenger RNA (mRNA) levels of microsomal triglyceride transfer protein (MTP), acyl-coenzyme A synthetase (ACS), and apolipoprotein B (apo B), which play important roles in VLDL synthesis and secretion.
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6 |
9462657
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Hepatic ACS activity and mRNA levels, and MTP mRNA levels were also increased in OLETF rats, whereas apo B mRNA levels were similar; these results suggest that the enhanced expression of both ACS and MTP genes associated with visceral fat accumulation before developing insulin resistance may be involved in the pathogenesis of hyperlipidemia in obese animal models with NIDDM.
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7 |
9892232
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In this study, we examine the mRNA levels of FAT, FABP-pm, FATP, and ACS in the liver and adipose tissue of genetically obese (ob/ob) mice and their control littermates.
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8 |
12147264
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Although ACS1 had been localized to three different subcellular regions in rat liver, endoplasmic reticulum, mitochondria, and peroxisomes, the study had used an antibody raised against the full-length ACS1 protein which cross-reacts with other isoforms, probably because all ACS family members contain highly conserved amino acid sequences.
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9 |
12147264
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Therefore, we examined the subcellular location of ACS1, ACS4, and ACS5 in rat liver to determine which isoform was present in peroxisomes, whether the ACSs were intrinsic membrane proteins, and which ACS isoforms were up-regulated by PPAR alpha ligands.
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10 |
12147264
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Non-cross-reacting ACS1, ACS4, and ACS5 peptide antibodies showed that ACS4 was the only ACS isoform present in peroxisomes isolated from livers of gemfibrozil-treated rats.
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11 |
12147264
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ACS1 was present in endoplasmic reticulum fractions and ACS5 was present in mitochondrial fractions.
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12 |
12147264
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Incubation with troglitazone, a specific inhibitor of ACS4, decreased ACS activity in the MAM fractions 30-45% and in the peroxisomal fractions about 30%.
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13 |
12147264
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Treatment with GW9578 increased ACS4 mRNA abundance 40% and ACS1 mRNA 25%.
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14 |
12147264
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We also determined that, unlike ACS1 and 5, ACS4 is not an intrinsic membrane protein.
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15 |
12147264
|
Although ACS1 had been localized to three different subcellular regions in rat liver, endoplasmic reticulum, mitochondria, and peroxisomes, the study had used an antibody raised against the full-length ACS1 protein which cross-reacts with other isoforms, probably because all ACS family members contain highly conserved amino acid sequences.
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16 |
12147264
|
Therefore, we examined the subcellular location of ACS1, ACS4, and ACS5 in rat liver to determine which isoform was present in peroxisomes, whether the ACSs were intrinsic membrane proteins, and which ACS isoforms were up-regulated by PPAR alpha ligands.
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17 |
12147264
|
Non-cross-reacting ACS1, ACS4, and ACS5 peptide antibodies showed that ACS4 was the only ACS isoform present in peroxisomes isolated from livers of gemfibrozil-treated rats.
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18 |
12147264
|
ACS1 was present in endoplasmic reticulum fractions and ACS5 was present in mitochondrial fractions.
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19 |
12147264
|
Incubation with troglitazone, a specific inhibitor of ACS4, decreased ACS activity in the MAM fractions 30-45% and in the peroxisomal fractions about 30%.
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20 |
12147264
|
Treatment with GW9578 increased ACS4 mRNA abundance 40% and ACS1 mRNA 25%.
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21 |
12147264
|
We also determined that, unlike ACS1 and 5, ACS4 is not an intrinsic membrane protein.
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22 |
12147264
|
Although ACS1 had been localized to three different subcellular regions in rat liver, endoplasmic reticulum, mitochondria, and peroxisomes, the study had used an antibody raised against the full-length ACS1 protein which cross-reacts with other isoforms, probably because all ACS family members contain highly conserved amino acid sequences.
|
23 |
12147264
|
Therefore, we examined the subcellular location of ACS1, ACS4, and ACS5 in rat liver to determine which isoform was present in peroxisomes, whether the ACSs were intrinsic membrane proteins, and which ACS isoforms were up-regulated by PPAR alpha ligands.
|
24 |
12147264
|
Non-cross-reacting ACS1, ACS4, and ACS5 peptide antibodies showed that ACS4 was the only ACS isoform present in peroxisomes isolated from livers of gemfibrozil-treated rats.
|
25 |
12147264
|
ACS1 was present in endoplasmic reticulum fractions and ACS5 was present in mitochondrial fractions.
|
26 |
12147264
|
Incubation with troglitazone, a specific inhibitor of ACS4, decreased ACS activity in the MAM fractions 30-45% and in the peroxisomal fractions about 30%.
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27 |
12147264
|
Treatment with GW9578 increased ACS4 mRNA abundance 40% and ACS1 mRNA 25%.
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28 |
12147264
|
We also determined that, unlike ACS1 and 5, ACS4 is not an intrinsic membrane protein.
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29 |
12147264
|
Although ACS1 had been localized to three different subcellular regions in rat liver, endoplasmic reticulum, mitochondria, and peroxisomes, the study had used an antibody raised against the full-length ACS1 protein which cross-reacts with other isoforms, probably because all ACS family members contain highly conserved amino acid sequences.
|
30 |
12147264
|
Therefore, we examined the subcellular location of ACS1, ACS4, and ACS5 in rat liver to determine which isoform was present in peroxisomes, whether the ACSs were intrinsic membrane proteins, and which ACS isoforms were up-regulated by PPAR alpha ligands.
|
31 |
12147264
|
Non-cross-reacting ACS1, ACS4, and ACS5 peptide antibodies showed that ACS4 was the only ACS isoform present in peroxisomes isolated from livers of gemfibrozil-treated rats.
|
32 |
12147264
|
ACS1 was present in endoplasmic reticulum fractions and ACS5 was present in mitochondrial fractions.
|
33 |
12147264
|
Incubation with troglitazone, a specific inhibitor of ACS4, decreased ACS activity in the MAM fractions 30-45% and in the peroxisomal fractions about 30%.
|
34 |
12147264
|
Treatment with GW9578 increased ACS4 mRNA abundance 40% and ACS1 mRNA 25%.
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35 |
12147264
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We also determined that, unlike ACS1 and 5, ACS4 is not an intrinsic membrane protein.
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36 |
14342522
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The results indicate that insulin acts by increasing glucose utilization, and not by exerting a direct effect on citrate-cleavage enzyme or acetate thiokinase.
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37 |
14521630
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Effect of pinealectomy on plasma levels of insulin and leptin and on hepatic lipids in type 2 diabetic rats.
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38 |
14521630
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We compared levels of insulin and leptin, and hepatic lipids in pinealectomized OLETF (PO) rats, sham-operated OLETF (SO) rats and sham-operated healthy Long-Evans Tokushima Otsuka (LETO) (SL) rats 16 and 30 wk after the operation.
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39 |
14521630
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Hepatic acyl-CoA synthetase (ACS) activity was significantly augmented in PO rats at 30 wk (10%, P < 0.01 versus SO group), while microsomal triglyceride transfer protein (MTP) decreased (-27% versus SO, P < 0.05); thus, the increased ACS activity and decreased MTP might have a role in the accumulation of hepatic triglycerides in PO rats.
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40 |
15347805
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To test this hypothesis, mice with severe lipotoxic cardiomyopathy, induced transgenically by cardiomyocyte-specific overexpression of the acyl CoA synthase (ACS) gene, were made hyperleptinemic by treatment with recombinant adenovirus containing the leptin cDNA.
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41 |
16603124
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Alpha-lipoic acid (alpha-LA) mimics the hypothalamic actions of leptin on food intake, energy expenditure, and activation of AMP-activated protein kinase (AMPK).
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42 |
16603124
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To determine if, like leptin, alpha-LA protects against cardiac lipotoxicity, alpha-LA was fed to transgenic mice with cardiomyocyte-specific overexpression of the acyl CoA synthase (ACS) gene.
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43 |
16603124
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Plasma TG fell 50%, hepatic-activated phospho-AMPK rose 6-fold, sterol regulatory element-binding protein-1c declined 50%, and peroxisome proliferator-activated receptor-gamma cofactor-1alpha mRNA rose 4-fold.
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44 |
23840832
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PA increased and EPA abolished the expression of the genes for bone-related proteins, including bone morphogenetic protein (BMP)-2, Msx2 and osteopontin in human aortic smooth muscle cells (HASMC).
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45 |
23840832
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Importantly, PA-induced osteoblastic differentiation was mediated, at least in part, by ACSL3 activation because acyl-CoA synthetase (ACS) inhibitor or siRNA targeted to ACSL3 completely prevented the PA induction of both BMP-2 and Msx2.
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46 |
23840832
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Conversely, adenovirus-mediated ACSL3 overexpression enhanced PA-induced BMP-2 and Msx2 expression.
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47 |
23840832
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In addition, EPA, ACSL3 siRNA and ACS inhibitor attenuated calcium deposition and caspase activation induced by PA.
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48 |
23840832
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PA increased and EPA abolished the expression of the genes for bone-related proteins, including bone morphogenetic protein (BMP)-2, Msx2 and osteopontin in human aortic smooth muscle cells (HASMC).
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49 |
23840832
|
Importantly, PA-induced osteoblastic differentiation was mediated, at least in part, by ACSL3 activation because acyl-CoA synthetase (ACS) inhibitor or siRNA targeted to ACSL3 completely prevented the PA induction of both BMP-2 and Msx2.
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50 |
23840832
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Conversely, adenovirus-mediated ACSL3 overexpression enhanced PA-induced BMP-2 and Msx2 expression.
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51 |
23840832
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In addition, EPA, ACSL3 siRNA and ACS inhibitor attenuated calcium deposition and caspase activation induced by PA.
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