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PMID |
Sentence |
1 |
1184738
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The role of insulin in the regulation of human adipose tissue lipoprotein lipase was evaluated.
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2 |
1184738
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In contrast, the diabetic patients with low insulin responses, failed to increase lipoprotein lipase activity with feeding.
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3 |
1184738
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Thus, insulin appears to be important in the regulation of human adipose tissue lipoprotein lipase activity.
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4 |
186865
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There are several causes for hyperlipemia in the diabetic: (a) an increase in hepatic synthesis of prebetalipoproteins, and (b) reduced elimination of prebetalipoproteins and chylomicrons from the bloodstream, due to diminished activity of lipoprotein lipase in insulin deficiency.
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5 |
992197
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Adipose tissue lipoprotein lipase activity (LPLA) and cellularity have been studied in controls, in diabetic or non-diabetic obese subjects and in insulin dependent diabetic patients.
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6 |
187516
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Insulin treatment of ketotic diabetes resulted in a rapid increase in the activity of LPL and decrease in serum triglycerdie level, whereas sulfonylurea treatment of non-insulin-requiring diabetics did not significantly influence the enzyme activity.
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7 |
187516
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The activity of LPL was correlated to basal plasma insulin concen tration in the insulin-deficient diabetes r = +0.34) but not in patients with maturity-onset-type diabetes.
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8 |
759824
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The role of insulin in the regulation of LPL has been well documented.
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9 |
456774
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Although all groups showed an increase of plasma insulin after oral glucose, both the diabetic and nondiabetic hypertriglyceridaemics had impaired activities of lipoprotein lipase in adipose tissue compared to the obese normals (p less than 0.02, p less than 0.03, respectively).
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10 |
456774
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A course of insulin therapy (20 u.o.d.) for one week increased the activity of lipoprotein lipase extracted from adipose tissue, lowered plasma triglycerides and improved triglyceride clearance from plasma in a group of diabetics with hypertriglyceridaemia (mean plasma triglyceride 8.7 mmol/l).
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11 |
3905460
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Comparative studies were performed on the relative effects of diabetes and insulin on heparin-releasable adipose lipoprotein lipase (LPL) in the intact and hypothyroid rat.
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12 |
3905460
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Insulin stimulated adipose LPL in the Tx-diabetic group.
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13 |
3905460
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Furthermore, the magnitude of the adipose LPL stimulation by insulin was not modulated by the endogenous serum T3.
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14 |
3516835
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The effects of insulin or oral agent treatments on the plasma lipoproteins and lipoprotein lipase activator were compared in a strictly defined non-obese, non-insulin dependent diabetic patient.
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15 |
3516835
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Lipoprotein lipase activator contents of the very low density lipoproteins correlated positively with their triglyceride (r = 0.803 in insulin, r = 0.828 in oral agent treated patients) and protein (r = 0.713 in insulin, r = 0.862 in oral agent treated patients) contents.
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16 |
3024509
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In diabetics, combined cold exposure and insulin did not affect the increase in BAT growth or LPL activity resulting from either treatment alone, but in controls this combination decreased BAT growth and COA.
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17 |
3552532
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Therapy with oral agents or insulin, resulting in good glycemic control, is followed by an increase of LPL activity in both adipose tissue and postheparin plasma.
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18 |
3552532
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In chronically insulin-treated patients with high LPL activity, VLDL triglyceride concentrations are normal or subnormal, and HDL level is increased.
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19 |
3279941
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The most marked change during insulin therapy was a 2.3-fold increase in adipose tissue lipoprotein lipase (LPL) activity (p less than 0.001).
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20 |
3292329
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Peritoneal macrophages isolated from insulin-deficient mice secreted 70% less LPL activity than control mice.
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21 |
3292329
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A 65% decrease in LPL activity in epididymal adipose tissue, without any changes in heart LPL activity, was also seen with insulin deficiency.
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22 |
3292329
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Additionally, 1 wk of insulin treatment increased LPL secretion by macrophages, but to only one-half of control, while normalizing adipose tissue LPL activity.
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23 |
2848176
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Adipose tissue lipoprotein lipase activity of fed and fasted normal and diabetic sand rats correlated negatively with plasma insulin and glucose levels.
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24 |
3063265
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Severely hyperlipidemic alloxan-diabetic cholesterol-fed rabbits were treated with different daily doses of insulin in order to study the effect of insulin on plasma lipids, lipoproteins and postheparin lipoprotein lipase activity.
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25 |
2542108
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The biological effects of insulin and IGF-I were examined by studying adipocyte lipoprotein lipase (LPL).
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26 |
2403617
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Injection of heparin to stimulate the action of lipoprotein lipase increased the removal rates in both control and insulin-deficient rats, but control values were not restored by heparin given to insulin-deficient rats and compared with controls the difference due to insulin deficiency persisted.
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27 |
1832357
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Insulin insensitivity and hyperinsulinaemia were both associated with higher levels of hepatic lipase activity but did not influence lipoprotein lipase activity.
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28 |
1911706
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Special attention was given to lipoprotein lipase (LPL) activity in tissues and to postheparin plasma LPL activity and hepatic lipase activity and their relation to insulin resistance.
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29 |
1913321
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After 2 weeks of insulin deficiency, fasting lipoprotein lipase activity was lowered in all tissues studied.
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30 |
1913321
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Insulin status had milder effects on lipoprotein lipase activity in vastus lateralis muscle than in the adipose tissues.
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31 |
1913321
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Thus the speed and extent of recovery of lipoprotein lipase activity following hormone replacement in insulin-deficient animals varied widely among tissues.
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32 |
1913321
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These findings suggest that insulin is part of the factors that determine the tissue specificity of lipoprotein lipase regulation.
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33 |
1538716
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Analysis of mRNA abundance for Glut-4, lipoprotein lipase, and glucose-6-phosphate dehydrogenase showed that pioglitazone enhanced the insulin induction of these mRNA species.
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34 |
1542265
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In obese subjects, adipose tissue HSL and LPL fail to respond to immunoreactive insulin postprandially, which may be an important maladaptation in terms of lipoprotein metabolism and risk of coronary heart disease.
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35 |
1430198
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Both chronic and acute insulin normalized LPL activity and immunoreactive LPL protein, while only chronic insulin corrected the levels of LPL mRNA.
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36 |
8458530
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In order to investigate these possibilities and to evaluate possible pathogenetic mechanisms, lipid composition (non-esterified and esterified cholesterol, triglycerides, phospholipids) of four VLDL subfractions of decreasing size (A: Svedberg flotation unit [Sf] > 400, B: Sf > 400, B: Sf 175-400, C: Sf 100-175, D: Sf 20-100), isolated by density gradient preparative ultracentrifugation, and plasma post-heparin lipolytic activity (lipoprotein lipase and hepatic lipase) were evaluated in 13 male normolipidaemic insulin-dependent diabetic patients in good glycaemic control (HbAlc 6.9 +/- 0.5%) (mean +/- SEM) and 9 male control subjects matched for age, body mass index and plasma lipid values.
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37 |
8056130
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In non-obese diabetic subjects, men with Type 1 diabetes have higher HDL-cholesterol than those with Type 2 diabetes, possibly due to the action of peripheral insulin on lipoprotein lipase activity, while in women, HDL-cholesterol concentrations were similar in Type 1 and Type 2 subjects possibly because of lowered lipatic lipase activity in Type 2 women which offsets the increased lipoprotein lipase activity of the Type 1 women.
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38 |
7767864
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Therefore, thyroid hormones may interact with some other factor(s) in this acute, insulin-deficient model of diabetes to selectively regulate functional, heparin-releasable lipoprotein lipase activity in perfused hearts.
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39 |
7648516
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The decrease in myocardial lipoprotein lipase (LPL) activity observed previously in acute, severe models of insulin-deficient diabetes may be a compensatory response to hypertriglyceridemia and a sustained increase in fatty acid delivery to cardiomyocytes.
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40 |
9421383
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This disturbance is closely linked to iatrogenic hyperinsulinemia and the nonphysiologic stimulation of lipoprotein lipase (LpL), a physiologic activator of CET, because lowering systemic insulin levels by administering insulin through the intraperitoneal insulin route normalizes LpL and CET.
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41 |
11024042
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However, LPL synthetic rate, measured using [(35)S]methionine pulse labeling, was decreased by 75% in the diabetic adipocytes, and insulin treatment reversed this effect.
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42 |
11947965
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We studied the preheparin serum lipoprotein lipase mass levels (prehaparin LPL mass) in type 2 diabetes mellitus patients and the effect of insulin therapy on the levels of preheparin LPL mass.
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43 |
11978647
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In subcutaneous adipocytes, increasing insulin doses stimulated LPL expression, with maximal stimulation at 100 nmol/l insulin (control, 1.0 +/- 0.0 [mean +/- SE, protein expression relative to control]; 1 nmol/l insulin, 0.87 +/- 0.13; 100 nmol/l insulin, 1.68 +/- 0.19; P < 0.001).
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44 |
11978647
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In summary, chronic treatment of human adipocytes with insulin stimulates lipolysis and LPL protein expression.
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45 |
15255786
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Lipoprotein lipase activity (LPL) was calculated as the triacylglycerol (TAG) flux across AD, and hormone-sensitive lipase (HSL) as the glycerol flux minus LPL. (1) In T2D the increase in prandial insulin secretion was delayed; postprandial nonesterified fatty acid (NEFA) and TAG levels in blood were increased, while BF, LPL and TAG clearance were blunted vs.
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46 |
15255786
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CON. (2) Acute or chronic nateglinide treatment induced a prompt increase in prandial insulin secretion, resulting in a decrease in blood glucose and NEFA levels owing to suppression of HSL, while BF, LPL and TAG clearance remained suppressed.
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47 |
15637076
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These results show that beta-cell-derived LPL has two physiologically relevant effects in islets, the inverse regulation of glucose metabolism and the independent mediation of insulin secretion through effects distal to membrane depolarization.
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48 |
16384854
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EU: 1) blood flow was increased [area under curve 0-360 min (milliliters per 100 milliliters of tissue); 1746 +/- 208 vs. 1344 +/- 102, P = 0.001], but glucose uptake was normal [area under curve 0-360 min (micromoles per 100 milliliters of tissue); 501 +/- 114 vs. 368 +/- 48]; 2) fasting rates of lipolysis (nanomoles per minute per 100 milliliters of tissue; 329 +/- 75 vs. 89 +/- 22, P = 0.02) and nonesterified fatty acid (NEFA) release (nanomoles per minute per 100 milliliters of tissue; 841 +/- 146 vs. 316 +/- 97, P = 0.01), and plasma NEFA levels (micromoles per liter; 623 +/- 50 vs. 454 +/- 57, P = 0.03) were increased, but were all rapidly suppressed to levels similar to those in EU after the increase in plasma insulin levels after the meal; and 3) LPL was not stimulated by insulin.
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49 |
19375767
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Compared with normal rats, untreated diabetic rats had a 30% and 61% increase in lipoprotein lipase protein expression and activity, which were decreased by insulin and gliclazide (P < .05).
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50 |
19552844
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The insulin level, HOMA-IR, and BMI were negatively correlated with LPL (r = -0.232 - 0.297, P < 0.05).
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51 |
19698699
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Down-regulation of LPL message and protein levels using siRNA resulted in a similar increase in insulin-dependent glucose uptake.
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52 |
20571309
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Heparin and/or insulin stimulate lipoprotein lipase and are known to decrease serum triglyceride level.
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53 |
18370662
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The topics that are developed include the role of insulin and glucagon in lipolysis, control of lipoprotein lipase, the glucose-glycogen-gluconeogenesis interrelations, carbohydrate-protein interactions and ketosis.
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54 |
21265823
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In both HF rats and mice, NNC61-5920 treatment attenuated hepatic insulin resistance and decreased expression of stearoyl-CoA desaturase 1, fatty acid translocase protein CD36 and lipoprotein lipase in liver.
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55 |
18952837
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LPL deletion in skeletal muscle reduces lipid storage and increases insulin signaling in skeletal muscle without changes in body composition.
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56 |
21722517
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LPL is an interesting enzyme that contributes in a pronounced way to normal metabolism, including insulin action, body weight regulation, energy balance, and atherosclerosis.
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57 |
21966368
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BMI, plasma insulin levels and HOMA-IR correlated negatively with LPL expression in both VAT and SAT as well as with FABP4 expression in VAT.
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