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PMID |
Sentence |
1 |
8543030
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Insulin-dependent translocation of the small GTP-binding protein rab3C in cardiac muscle: studies on insulin-resistant Zucker rats.
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8543030
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The failure of insulin-regulated recruitment of the GLUT4 glucose transporter in cardiac muscle of obese Zucker rats is associated with alterations of the subcellular distribution of the small-molecular-mass GTP-binding protein rab4A.
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3 |
8543030
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Here, we show by subcellular fractionation and Western blotting a translocation of the small-molecular-mass GTP-binding protein rab3C from microsomal membranes to plasma membranes in lean control rats following in vivo insulin stimulation.
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4 |
8543030
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In GLUT4-enriched membrane vesicles, obtained from cardiac microsomes of the obese group as well as of lean controls, rab3C was not detectable.
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5 |
8543030
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It is suggested that the altered behaviour of rab3C may contribute to an impaired trafficking of GLUT4 in the insulin-resistant state.
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6 |
8543030
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Insulin-dependent translocation of the small GTP-binding protein rab3C in cardiac muscle: studies on insulin-resistant Zucker rats.
|
7 |
8543030
|
The failure of insulin-regulated recruitment of the GLUT4 glucose transporter in cardiac muscle of obese Zucker rats is associated with alterations of the subcellular distribution of the small-molecular-mass GTP-binding protein rab4A.
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8 |
8543030
|
Here, we show by subcellular fractionation and Western blotting a translocation of the small-molecular-mass GTP-binding protein rab3C from microsomal membranes to plasma membranes in lean control rats following in vivo insulin stimulation.
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9 |
8543030
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In GLUT4-enriched membrane vesicles, obtained from cardiac microsomes of the obese group as well as of lean controls, rab3C was not detectable.
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10 |
8543030
|
It is suggested that the altered behaviour of rab3C may contribute to an impaired trafficking of GLUT4 in the insulin-resistant state.
|
11 |
8543030
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Insulin-dependent translocation of the small GTP-binding protein rab3C in cardiac muscle: studies on insulin-resistant Zucker rats.
|
12 |
8543030
|
The failure of insulin-regulated recruitment of the GLUT4 glucose transporter in cardiac muscle of obese Zucker rats is associated with alterations of the subcellular distribution of the small-molecular-mass GTP-binding protein rab4A.
|
13 |
8543030
|
Here, we show by subcellular fractionation and Western blotting a translocation of the small-molecular-mass GTP-binding protein rab3C from microsomal membranes to plasma membranes in lean control rats following in vivo insulin stimulation.
|
14 |
8543030
|
In GLUT4-enriched membrane vesicles, obtained from cardiac microsomes of the obese group as well as of lean controls, rab3C was not detectable.
|
15 |
8543030
|
It is suggested that the altered behaviour of rab3C may contribute to an impaired trafficking of GLUT4 in the insulin-resistant state.
|
16 |
8543030
|
Insulin-dependent translocation of the small GTP-binding protein rab3C in cardiac muscle: studies on insulin-resistant Zucker rats.
|
17 |
8543030
|
The failure of insulin-regulated recruitment of the GLUT4 glucose transporter in cardiac muscle of obese Zucker rats is associated with alterations of the subcellular distribution of the small-molecular-mass GTP-binding protein rab4A.
|
18 |
8543030
|
Here, we show by subcellular fractionation and Western blotting a translocation of the small-molecular-mass GTP-binding protein rab3C from microsomal membranes to plasma membranes in lean control rats following in vivo insulin stimulation.
|
19 |
8543030
|
In GLUT4-enriched membrane vesicles, obtained from cardiac microsomes of the obese group as well as of lean controls, rab3C was not detectable.
|
20 |
8543030
|
It is suggested that the altered behaviour of rab3C may contribute to an impaired trafficking of GLUT4 in the insulin-resistant state.
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21 |
8886977
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Rab3B and Rab3C were identified by western blotting in rat and in human pancreatic islets, in two rat insulin-secreting cell lines, RINm5F and INS-1, as well as in the hamster cell line HIT-T15.
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8886977
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In contrast, Rab3A was detected in rat pancreatic islets as well as in the two insulin-secreting rat cell lines but not in human pancreatic islets and was only barely discernible in HIT-T15 cells.
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23 |
8886977
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Northern blotting analysis revealed that Rab3D is expressed in the same insulin-secreting cells as Rab3A.
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24 |
8886977
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Rab3A was found to be associated with insulin-containing secretory granules both by immunofluorescence, immunoelectron microscopy and after sucrose density gradient.
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25 |
8886977
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Overexpression in HIT-T15 cells of a Rab3A mutant deficient in GTP hydrolysis inhibited insulin secretion stimulated by a mixture of nutrients and bombesin.
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26 |
8886977
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Insulin release triggered by these secretagogues was also slightly decreased by the overexpression of wild-type Rab3A but not by the overexpression of wild-type Rab5A and of a Rab5A mutant deficient in GTP hydrolysis.
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27 |
8886977
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Finally, we studied the expression in insulin-secreting cells of rabphilin-3A, a putative effector protein that associates with the GTP-bound form of Rab3A.
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28 |
8886977
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Taken together these results indicate an involvement of Rab3A in the control of insulin release in rat and hamster.
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29 |
10768829
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Regulation of subcellular distribution of GLUT4 in cardiomyocytes: Rab4A reduces basal glucose transport and augments insulin responsiveness.
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30 |
10768829
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Members of the Rab subfamily of small-GTP binding proteins have been suggested to be involved in insulin-regulated translocation of the glucose transporter GLUT4.
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31 |
10768829
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To directly study this process in muscle tissue, we have established an insulin-sensitive cardiac cell line (H9K6) stably overexpressing GLUT4, which was derived from H9c2 cardiac myoblasts.
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32 |
10768829
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H9K6-cells were transiently transfected with rab4A and rab3C with an efficiency of 65% and glucose uptake and the cellular distribution and expression of the transporter isoforms GLUT1 and GLUT4 was subsequently determined.
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33 |
10768829
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Rab3C-overexpression caused no significant change in both basal and insulin-stimulated 2-deoxyglucose uptake compared to control cells transfected with the blank vector.
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34 |
10768829
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Total expression of GLUT1 and GLUT4 was not affected by Rab4-overexpression.
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35 |
10768829
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Cell surface biotinylation was used to quantify the abundance of GLUT1 and GLUT4 in the plasma membrane.
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36 |
10768829
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A decrease of cell surface GLUT4 by about 40% compared to control cells was found in Rab4-overexpressing cells Insulin treatment increased cell surface-GLUT4 by 100% compared to only 26% in control cells.
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37 |
10768829
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Our data show that Rab4A but not Rab3C is able to reduce basal glucose uptake and cell surface content of GLUT4 in cardiac muscle cells.
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38 |
10768829
|
This results in an increased stimulation of glucose uptake by insulin which can be fully explained by enhanced translocation of GLUT4.
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39 |
10768829
|
We suggest that Rab4A participates in the redistribution of GLUT4 to intracellular pools and represents an essential determinant of the insulin responsiveness of GLUT4 translocation in cardiac muscle cells.
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40 |
10768829
|
Regulation of subcellular distribution of GLUT4 in cardiomyocytes: Rab4A reduces basal glucose transport and augments insulin responsiveness.
|
41 |
10768829
|
Members of the Rab subfamily of small-GTP binding proteins have been suggested to be involved in insulin-regulated translocation of the glucose transporter GLUT4.
|
42 |
10768829
|
To directly study this process in muscle tissue, we have established an insulin-sensitive cardiac cell line (H9K6) stably overexpressing GLUT4, which was derived from H9c2 cardiac myoblasts.
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43 |
10768829
|
H9K6-cells were transiently transfected with rab4A and rab3C with an efficiency of 65% and glucose uptake and the cellular distribution and expression of the transporter isoforms GLUT1 and GLUT4 was subsequently determined.
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44 |
10768829
|
Rab3C-overexpression caused no significant change in both basal and insulin-stimulated 2-deoxyglucose uptake compared to control cells transfected with the blank vector.
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45 |
10768829
|
Total expression of GLUT1 and GLUT4 was not affected by Rab4-overexpression.
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46 |
10768829
|
Cell surface biotinylation was used to quantify the abundance of GLUT1 and GLUT4 in the plasma membrane.
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47 |
10768829
|
A decrease of cell surface GLUT4 by about 40% compared to control cells was found in Rab4-overexpressing cells Insulin treatment increased cell surface-GLUT4 by 100% compared to only 26% in control cells.
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48 |
10768829
|
Our data show that Rab4A but not Rab3C is able to reduce basal glucose uptake and cell surface content of GLUT4 in cardiac muscle cells.
|
49 |
10768829
|
This results in an increased stimulation of glucose uptake by insulin which can be fully explained by enhanced translocation of GLUT4.
|
50 |
10768829
|
We suggest that Rab4A participates in the redistribution of GLUT4 to intracellular pools and represents an essential determinant of the insulin responsiveness of GLUT4 translocation in cardiac muscle cells.
|
51 |
10768829
|
Regulation of subcellular distribution of GLUT4 in cardiomyocytes: Rab4A reduces basal glucose transport and augments insulin responsiveness.
|
52 |
10768829
|
Members of the Rab subfamily of small-GTP binding proteins have been suggested to be involved in insulin-regulated translocation of the glucose transporter GLUT4.
|
53 |
10768829
|
To directly study this process in muscle tissue, we have established an insulin-sensitive cardiac cell line (H9K6) stably overexpressing GLUT4, which was derived from H9c2 cardiac myoblasts.
|
54 |
10768829
|
H9K6-cells were transiently transfected with rab4A and rab3C with an efficiency of 65% and glucose uptake and the cellular distribution and expression of the transporter isoforms GLUT1 and GLUT4 was subsequently determined.
|
55 |
10768829
|
Rab3C-overexpression caused no significant change in both basal and insulin-stimulated 2-deoxyglucose uptake compared to control cells transfected with the blank vector.
|
56 |
10768829
|
Total expression of GLUT1 and GLUT4 was not affected by Rab4-overexpression.
|
57 |
10768829
|
Cell surface biotinylation was used to quantify the abundance of GLUT1 and GLUT4 in the plasma membrane.
|
58 |
10768829
|
A decrease of cell surface GLUT4 by about 40% compared to control cells was found in Rab4-overexpressing cells Insulin treatment increased cell surface-GLUT4 by 100% compared to only 26% in control cells.
|
59 |
10768829
|
Our data show that Rab4A but not Rab3C is able to reduce basal glucose uptake and cell surface content of GLUT4 in cardiac muscle cells.
|
60 |
10768829
|
This results in an increased stimulation of glucose uptake by insulin which can be fully explained by enhanced translocation of GLUT4.
|
61 |
10768829
|
We suggest that Rab4A participates in the redistribution of GLUT4 to intracellular pools and represents an essential determinant of the insulin responsiveness of GLUT4 translocation in cardiac muscle cells.
|