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PMID |
Sentence |
1 |
12810697
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Now, we show that HSL is basally associated with lipid droplet surfaces at a low level in perilipin nulls, but that stimulated translocation from the cytosol to lipid droplets is absent in adipocytes derived from embryonic fibroblasts of perilipin-null mice.
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2 |
12810697
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On activation of protein kinase A, HSL-GFP translocates to lipid droplets only in cells that express fully phosphorylatable perilipin A, confirming that perilipin is required to elicit the HSL translocation reaction.
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3 |
15990589
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Further evidence has accrued of the interaction between hormone-sensitive lipase and perilipin, the protein that coats the adipocyte lipid droplet.
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4 |
16123323
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Atrial natriuretic peptide increases the intracellular 3', 5'-cyclic guanosine monophosphate (cGMP) concentration which activates cGMP-dependent protein kinase leading to perilipin and hormone-sensitive lipase phosphorylation and lipolysis.
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5 |
16527823
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Hormones such as catecholamines and insulin regulate triacylglycerol metabolism through reversible serine phosphorylation of perilipin A.
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6 |
16527823
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This association was controlled by insulin and catecholamine: perilipin B was specifically depleted from the plasma membrane in response to the catecholamine isoproterenol, while insulin increased the amount of threonine phosphorylated perilipin at the plasma membrane.
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7 |
16527823
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The reversible translocation of perilipin B to and from the plasma membrane in response to insulin and isoproterenol, respectively, suggests a specific function for perilipin B to protect newly synthesized triacylglycerol in the plasma membrane.
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8 |
16836753
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We investigated whether perilipin gene polymorphisms were associated with obesity, type 2 diabetes, and their related variables (anthropometric variables, plasma leptin, lipids, glucose and insulin concentrations) in a cross-sectional random sample of 1120 French men and women aged 35 to 65 years old, including 227 obese (BMI >or= 30 kg/m2) and 275 type 2 diabetes subjects.
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9 |
18356850
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The variations in perilipin gene (PLIN) were previously associated with obesity and insulin sensitivity.
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10 |
18357681
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During PKA-stimulated lipolysis, CGI-58 is released from phosphorylated perilipin and in turn, binds to ATGL.
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11 |
20440297
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Furthermore, Cidec/FSP27 siRNA transfection significantly reduced FSP27 expression and partially restored AMPK signaling, increased UCP3 and decreased SERBP 1c and perilipin proteins in Ad-36-infected muscle cells.
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12 |
9568706
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BRL 49653 partially blocked the TNF-alpha-mediated reduction in protein levels of hormone-sensitive lipase and perilipin A, two proteins involved in adipocyte lipolysis.
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13 |
12351429
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Consistent with the hypothesis that TNF-alpha induces perilipin hyperphosphorylation by activating PKA, TNF-alpha increased intracellular cAMP approximately 1.7-fold, and the increase was abrogated by PD98059.
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14 |
14693700
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The ability of TNF-alpha to phosphorylate extracellular signal-regulated kinase 1 (ERK1) and ERK2 and to downregulate perilipin (which has been implicated in the lipolytic effect of TNF-alpha) was not affected by glucose.
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15 |
15111493
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The expression of S3-12 and perilipin is tightly correlated to the expression and activation of PPAR-gamma in adipocytes, and promoter characterization revealed that the S3-12 and the perilipin promoters contain three and one evolutionarily conserved PPAR response elements, respectively.
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16 |
15111493
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The direct regulation of perilipin and S3-12 by PPAR-gamma therefore is likely to be an important mediator of the in vivo effects of prolonged treatment with PPAR-gamma activators: insulin sensitization, fatty acid trapping in adipose tissue, reduced basal adipose lipolysis, and weight gain.
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17 |
15111495
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Mechanistically, although the activity of protein kinase A (PKA) was greatly increased in caveolin-1 null adipocytes, the phosphorylation of perilipin was dramatically reduced, indicating that caveolin-1 may facilitate the PKA-mediated phosphorylation of perilipin.
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18 |
15182363
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Depletion of cholesterol from the cells using beta-cyclodextrin blocked insulin stimulation of glucose uptake, insulin inhibition of perilipin phosphorylation in response to isoproterenol, and insulin stimulation of protein kinase B and Map-kinases extracellular signal-related kinase (ERK)1/2 phosphorylation.
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19 |
15197189
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Despite increasing insulin resistance with age, plin(-/-) mice at different ages maintained a normal glucose response during an intraperitoneal glucose tolerance curve, being compensated by the increased beta-oxidation and reduced hepatic glucose production.
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20 |
15545214
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Work in recent years has revealed that both hormone-sensitive lipase (HSL), generally thought to be the rate-limiting enzyme, and perilipin, a lipid droplet surface protein, are required for optimal lipid storage and fatty acid release.
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21 |
15545214
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The perilipin proteins are polyphosphorylated by protein kinase A and phosphorylation is necessary for translocation of HSL to the lipid droplet and enhanced lipolysis.
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22 |
17445544
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In conclusion, increased perilipin expression in subcutaneous fat after rosiglitazone treatment is likely to be a mediator of reduced lipolysis, resulting in lipid storage in subcutaneous fat, fat redistribution, and insulin sensitization.
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