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PMID |
Sentence |
1 |
21645024
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Objective? Retinol-binding protein 4 (RBP4), produced by adipocytes and hepatocytes, contributes to an unfavourable lipid profile and insulin resistance, which can contribute to the development of coronary artery disease (CAD).
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17259477
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Retinol-binding protein 4 (RBP4) is an adipokine that induced insulin resistance in mice, and high plasma RBP4 levels were associated with insulin-resistant states in humans.
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17259477
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Adjusted circulating RBP4 correlated negatively with insulin sensitivity (clamp: r = -0.33, P = 0.005; OGTT: r = -0.36, P = 0.002) and positively with parameters in the fasting state as insulin levels (r = 0.35, P = 0.003) and homeostasis model assessment of insulin resistance (r = 0.34, P = 0.004).
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4 |
17259477
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In addition, circulating RBP4 correlated negatively with hepatic insulin clearance (r = -0.25, P = 0.04).
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5 |
17416795
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Circulating RBP4 was not associated with age, BMI, waist-to-hip ratio, or metabolic parameters, including insulin sensitivity (r = -0.03, P = 0.6).
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6 |
17416795
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On the contrary, circulating RBP4 was negatively associated with insulin secretion, especially in obese subjects (r = -0.48, P = 0.007), in whom RBP4 also was linked to insulin disposition index (r = -0.44, P = 0.01).
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7 |
17440021
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The aim was to investigate the association between RBP4 and various markers related to insulin resistance and diabetic complications in type 2 diabetic patients.
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8 |
17440021
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The current study shows that RBP4 is associated with variables related to insulin resistance and diabetic complications.
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9 |
17575262
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Animal models and patients with type 2 diabetes exhibit elevated levels of circulating retinol-binding protein (RBP4), and RBP4 can induce insulin resistance in mice.
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10 |
17575262
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However, little is known about how RBP4 affects insulin signaling.
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11 |
17575262
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Without affecting autophosphorylation of the insulin receptor, RBP4 blocked the insulin-stimulated phosphorylation of IRS1 at serine (307) [corresponding to serine (302) in the murine sequence] and concomitantly increased the EC50 (from 0.5 to 2 nM) for insulin stimulation of IRS1 phosphorylation at tyrosine.
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12 |
17575262
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The EC50 for insulin stimulation of downstream phosphorylation of MAP kinase ERK1/2 was increased (from 0.2 to 0.8 nM) by RBP4.
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13 |
17575262
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However, the sensitivity to insulin for downstream signaling to control of protein kinase B and glucose uptake was not affected by RBP4.
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14 |
17869225
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In this study, we have demonstrated that anthocyanin (cyanidin 3-glucoside; C3G) which is a pigment widespread in the plant kingdom, ameliorates hyperglycemia and insulin sensitivity due to the reduction of retinol binding protein 4 (RBP4) expression in type 2 diabetic mice.
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15 |
17952832
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Therefore, RBP4 appears to play an important role in mediating adipose tissue communication with other insulin target tissues in insulin resistant states.
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16 |
18324929
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High levels of circulating retinol-binding protein 4 (RBP4) and baseline expression of adipogenic genes correlate with subsequent improvement in insulin sensitivity following Thiazolidinedione (TZD) treatment.
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17 |
18980783
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In this randomized, placebo-controlled, double-blind study of 57 abdominally obese middle-aged men, conjugated linoleic acid (CLA) did not induce changes in retinol-binding protein 4 concentrations (RBP4), despite marked induced insulin resistance.
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18 |
18466349
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These data demonstrate that RBP4 in cirrhosis (i) is decreased due to reduced hepatic production, (ii) is not associated with insulin resistance, and (iii) might have a beneficial role by decreasing hepatic glucose production and could thus also be regarded as a hepatokine.
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19 |
19501859
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Alterations of this interaction have been suggested to be implicated in the elevation of RBP4 that are thought to contribute to the development of insulin resistance associated with obesity and type 2 diabetes mellitus (T2DM).
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19671994
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Retinol-binding protein 4 (RBP4) is a newly discovered adipokine, which is reported to be correlated with insulin resistance (IR) and type 2 diabetes (T2DM).
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21 |
19850685
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Short-term insulin deprivation and hyperglycemia had no effect on RBP4 levels and synthesis rates in T1D.
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22 |
19857477
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RBP4, retinol and RBP4:retinol molar ratio were not different between the groups and were not associated with markers of insulin resistance.
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23 |
19765959
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RBP4 has been associated with insulin resistance and hypertriglyceridemia in obesity, the metabolic syndrome and type 2 diabetes.
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24 |
20819415
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It was hypothesized that resistance exercise decreases muscular adipose tissue and reduces the level of retinol-binding protein-4 (RBP4), which is linked to adipose tissue and insulin sensitivity in diabetics.
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25 |
20929509
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Serum levels of retinol-binding protein 4 (RBP4) are associated with insulin resistance and type 2 diabetes mellitus (T2DM) and may impact on ?-cell function.
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26 |
20929509
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Serum RBP4 is correlated with glucose-stimulated insulin secretion in NGT non-VO subjects, but not in NGT VO subjects and T2DM patients.
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27 |
20932285
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Retinol binding protein 4 (RBP4) promotes insulin resistance in mice and is systemically elevated in patients with obesity and type 2 diabetes.
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28 |
20932285
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The strong associations with hepatic and renal function, insulin resistance and acute mortality collectively suggest a role of RBP4 in the pathogenesis of critical illness, possibly as a negative acute phase reactant, and allow a proposition as a potential novel biomarker for ICU patients.
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29 |
20832065
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Changes in RBP4 saturation with retinol may link renal dysfunction and insulin resistance to atherosclerosis.
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30 |
20798476
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Retinol-binding protein 4 (RBP4), one of the new adipocytokine, is recently reported to provide a link between insulin resistance and features of metabolic factors.
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31 |
21104585
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?These results suggest that RBP-4, lipocalin-2 and L-PGDS do not regulate insulin sensitivity in healthy men.
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32 |
19816414
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These data suggest that RBP4 may regulate adiposity, and p85 expression in obese-T2DM, thus providing a link to impaired insulin signaling and diabetes in severely obese patients.
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33 |
18285525
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Since elevated circulating RBP4 causes insulin resistance and glucose intolerance in mice, these findings suggest that increased TTR or alterations in RBP4-TTR binding may contribute to insulin resistance by stabilizing RBP4 at higher steady-state concentrations in circulation.
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34 |
18437353
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The RBP4:transthyretin ratio correlated with HOMA-IR and fasting insulin in controls.
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35 |
21164503
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Under baseline diet conditions, RBP4 was associated with decreased disposition index (D(i)) (? = -2.4% (-4.5%; -0.2%), P = 0.04) and increased basal hepatic glucose production rate (HGP) (? = 0.02 mg kg(-1) min(-1) (0.002; 0.04), P = 0.03), but not associated with peripheral glucose disposal rate or hepatic insulin resistance index.
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36 |
21164503
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In conclusion, plasma RBP4 in young men associates with components of the metabolic syndrome, but is not determined by birth weight and seems not to be involved in short-term high-fat diet-induced insulin resistance.
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37 |
21779631
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Previous studies have suggested that Retinol Binding Protein 4 (RPB4), a protein produced by the adipose tissue, is associated with insulin resistance (IR).
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38 |
21677415
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Retinol-binding protein 4 (RBP4) has been shown to be associated with insulin resistance and fatty acid metabolism.
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39 |
21820611
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There was no difference between groups in adipokines; however, in women with a healthy pregnancy, RBP4 was associated with insulin resistance (r = 0.47, p <0.05).
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40 |
21820611
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RBP4 was associated with insulin resistance only in women with a previous healthy pregnancy (r = 0.51, p <0.05).
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41 |
17174134
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Serum retinol binding protein 4 (RBP4) was recently described as a new adipokine that reduced peripheral and hepatic insulin sensitivity and increased hepatic gluconeogenesis.
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42 |
17174134
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Hence, sequence variants that alter RBP4 expression or function could increase T2DM susceptibility and reduce insulin sensitivity.
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43 |
21939650
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Plasma visfatin and RBP-4 concentrations correlated with BMI, waist/hip ratio, insulin and homeostatic model assessment insulin resistance (HOMA(IR)).
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44 |
21939650
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Plasma RBP-4 correlated positively with liver fat and HOMA(IR) which may reflect its effects on hepatic insulin sensitivity.
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