Neutral lipids are stored in so-called lipid droplets, which are formed as small primordial droplets at microsomal membranes and increase in size by a fusion process. The fusion is catalyzed by the SNARE proteins SNAP23, syntaxin-5 and VAMP4. SNAP23 is involved in the insulin dependent translocation of GLUT4 to the plasma membrane, and has an important role in the development of insulin resistance. Thus fatty acids relocalize SNAP23 from the plasma membrane (and the translocation of GLUT 4) to the interior of the cell giving rise to insulin resistance. Moreover this relocalization is seen in skeletal muscles biopsies from patients with type 2 diabetes compared to matched control. Thus a missorting of SNAP23 is essential for the development of insulin resistance. (C) 2011 Elsevier Ltd. All rights reserved.
机构:
Univ Iowa, Dept Internal Med, Fraternal Order Eagles Diabet Res Ctr, Carver Coll Med, 200 Hawkins Dr,PBDB Rm 3318, Iowa City, IA 52242 USA
Iowa City Vet Affairs Med Ctr, Iowa City, IA 52246 USAVanderbilt Univ, Dept Mol Physiol & Biophys, Nashville, TN 37232 USA
机构:
Univ Colorado Denver, Dept Pediat, Div Pediat Endocrinol, Aurora, CO 80045 USA
Univ Colorado Denver, Barbara Davis Ctr Childhood Diabet, Aurora, CO 80045 USAUniv Colorado Denver, Dept Pediat, Div Pediat Endocrinol, Aurora, CO 80045 USA
Chan, Christine L.
Pyle, Laura
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Univ Colorado Denver, Dept Pediat, Adm Div, Aurora, CO 80045 USAUniv Colorado Denver, Dept Pediat, Div Pediat Endocrinol, Aurora, CO 80045 USA
Pyle, Laura
Morehead, Rose
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Univ Colorado Denver, Dept Pediat, Div Pediat Endocrinol, Aurora, CO 80045 USAUniv Colorado Denver, Dept Pediat, Div Pediat Endocrinol, Aurora, CO 80045 USA
Morehead, Rose
Baumgartner, Amy
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Univ Colorado Denver, Dept Pediat, Div Pediat Endocrinol, Aurora, CO 80045 USAUniv Colorado Denver, Dept Pediat, Div Pediat Endocrinol, Aurora, CO 80045 USA
Baumgartner, Amy
Cree-Green, Melanie
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Univ Colorado Denver, Dept Pediat, Div Pediat Endocrinol, Aurora, CO 80045 USA
Univ Colorado Denver, Barbara Davis Ctr Childhood Diabet, Aurora, CO 80045 USAUniv Colorado Denver, Dept Pediat, Div Pediat Endocrinol, Aurora, CO 80045 USA
Cree-Green, Melanie
Nadeau, Kristen J.
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Univ Colorado Denver, Dept Pediat, Div Pediat Endocrinol, Aurora, CO 80045 USA
Univ Colorado Denver, Barbara Davis Ctr Childhood Diabet, Aurora, CO 80045 USAUniv Colorado Denver, Dept Pediat, Div Pediat Endocrinol, Aurora, CO 80045 USA
机构:
Tokyo Womens Med Univ, Sch Med, Ctr Diabet, Shinjuku Ku, Tokyo 1620054, JapanTokyo Womens Med Univ, Sch Med, Ctr Diabet, Shinjuku Ku, Tokyo 1620054, Japan
Takayama, S
Sakura, H
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Tokyo Womens Med Univ, Sch Med, Ctr Diabet, Shinjuku Ku, Tokyo 1620054, JapanTokyo Womens Med Univ, Sch Med, Ctr Diabet, Shinjuku Ku, Tokyo 1620054, Japan
Sakura, H
Katsumori, K
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Tokyo Womens Med Univ, Sch Med, Ctr Diabet, Shinjuku Ku, Tokyo 1620054, JapanTokyo Womens Med Univ, Sch Med, Ctr Diabet, Shinjuku Ku, Tokyo 1620054, Japan
Katsumori, K
Wasada, TR
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Tokyo Womens Med Univ, Sch Med, Ctr Diabet, Shinjuku Ku, Tokyo 1620054, JapanTokyo Womens Med Univ, Sch Med, Ctr Diabet, Shinjuku Ku, Tokyo 1620054, Japan
Wasada, TR
Iwamoto, Y
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Tokyo Womens Med Univ, Sch Med, Ctr Diabet, Shinjuku Ku, Tokyo 1620054, JapanTokyo Womens Med Univ, Sch Med, Ctr Diabet, Shinjuku Ku, Tokyo 1620054, Japan
机构:
Univ Pittsburgh, Dept Med, Div Endocrinol & Metab, Pittsburgh, PA 15213 USAUniv Pittsburgh, Dept Med, Div Endocrinol & Metab, Pittsburgh, PA 15213 USA
Goodpaster, BH
Wolf, D
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Univ Pittsburgh, Dept Med, Div Endocrinol & Metab, Pittsburgh, PA 15213 USAUniv Pittsburgh, Dept Med, Div Endocrinol & Metab, Pittsburgh, PA 15213 USA