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Ian Simpson
Title Professor
Institution College of Medicine
Department Neural and Behavioral Sciences
Division Neural & Behavioral Science
Address 500 University Drive Hershey PA 17033
Mailbox: H109
Telephone 7175314156
Email
Background
PREFERRED TITLE/ROLE:

Professor of Neural and Behavioral Sciences

GRADUATE PROGRAM AFFILIATIONS:

Integrative Biosciences, Anatomy, Cell and Molecular Biology, Neuroscience, Physiology

EDUCATION:

Ph.D., University College (London), 1975

NARRATIVE:

There are two major projects ongoing in the laboratory. The first is focused on the mechanism(s) of transport of nutrients such as glucose, ketone bodies, amino acids and iron across the blood -brain barrier. In these studies we use a combination of in vivo and in vitro approaches to investigate the activities of these proteins that facilitate the passage of the nutrients into the brain. The second field of interest is focused on the inter-relationship between diabetes and stroke. Using mouse models of diabetes, we are investigating the underlying causes of the impaired recovery from stroke observed in the diabetic mice compared to their non-diabetic littermates. Specifically we have observed that the cytokine-mediated activation of the brain's inflammatory/wound healing mechanism(s), are delayed and diminished in the diabetic brain following a stroke and are thus investigating the underlying causes for retarded responses.
Publications
1. Kumari R, Willing LB, Patel SD, Baskerville KA, Simpson IA. Increased cerebral matrix metalloprotease-9 activity is associated with compromised recovery in the diabetic db/db mouse following a stroke. J Neurochem. 2011 Dec; 119(5):1029-40.
  View in: PubMed
 
2. Devraj K, Klinger ME, Myers RL, Mokashi A, Hawkins RA, Simpson IA. GLUT-1 glucose transporters in the blood-brain barrier: differential phosphorylation. J Neurosci Res. 2011 Dec; 89(12):1913-25.
  View in: PubMed
 
3. Kumari R, Willing LB, Jefferson LS, Simpson IA, Kimball SR. REDD1 (regulated in development and DNA damage response 1) expression in skeletal muscle as a surrogate biomarker of the efficiency of glucocorticoid receptor blockade. Biochem Biophys Res Commun. 2011 Sep 9; 412(4):644-7.
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4. Leroy C, Pierre K, Simpson IA, Pellerin L, Vannucci SJ, Nehlig A. Temporal changes in mRNA expression of the brain nutrient transporters in the lithium-pilocarpine model of epilepsy in the immature and adult rat. Neurobiol Dis. 2011 Sep; 43(3):588-97.
  View in: PubMed
 
5. Mangia S, DiNuzzo M, Giove F, Carruthers A, Simpson IA, Vannucci SJ. Response to 'comment on recent modeling studies of astrocyte-neuron metabolic interactions': much ado about nothing. J Cereb Blood Flow Metab. 2011 Jun; 31(6):1346-53.
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6. Kumari R, Willing LB, Patel SD, Krady JK, Zavadoski WJ, Gibbs EM, Vannucci SJ, Simpson IA. The PPAR-gamma agonist, darglitazone, restores acute inflammatory responses to cerebral hypoxia-ischemia in the diabetic ob/ob mouse. J Cereb Blood Flow Metab. 2010 Feb; 30(2):352-60.
  View in: PubMed
 
7. Devraj K, Geguchadze R, Klinger ME, Freeman WM, Mokashi A, Hawkins RA, Simpson IA. Improved membrane protein solubilization and clean-up for optimum two-dimensional electrophoresis utilizing GLUT-1 as a classic integral membrane protein. J Neurosci Methods. 2009 Oct 30; 184(1):119-23.
  View in: PubMed
 
8. Mangia S, Simpson IA, Vannucci SJ, Carruthers A. The in vivo neuron-to-astrocyte lactate shuttle in human brain: evidence from modeling of measured lactate levels during visual stimulation. J Neurochem. 2009 May; 109 Suppl 1:55-62.
  View in: PubMed
 
9. Nehlig A, Dufour F, Klinger M, Willing LB, Simpson IA, Vannucci SJ. The ketogenic diet has no effect on the expression of spike-and-wave discharges and nutrient transporters in genetic absence epilepsy rats from Strasbourg. J Neurochem. 2009 May; 109 Suppl 1:207-13.
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10. Simpson IA, Dwyer D, Malide D, Moley KH, Travis A, Vannucci SJ. The facilitative glucose transporter GLUT3: 20 years of distinction. Am J Physiol Endocrinol Metab. 2008 Aug; 295(2):E242-53.
  View in: PubMed
 
11. Zinnanti WJ, Lazovic J, Housman C, LaNoue K, O'Callaghan JP, Simpson I, Woontner M, Goodman SI, Connor JR, Jacobs RE, Cheng KC. Mechanism of age-dependent susceptibility and novel treatment strategy in glutaric acidemia type I. J Clin Invest. 2007 Nov; 117(11):3258-70.
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12. Simpson IA, Carruthers A, Vannucci SJ. Supply and demand in cerebral energy metabolism: the role of nutrient transporters. J Cereb Blood Flow Metab. 2007 Nov; 27(11):1766-91.
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13. Fisher J, Devraj K, Ingram J, Slagle-Webb B, Madhankumar AB, Liu X, Klinger M, Simpson IA, Connor JR. Ferritin: a novel mechanism for delivery of iron to the brain and other organs. Am J Physiol Cell Physiol. 2007 Aug; 293(2):C641-9.
  View in: PubMed
 
14. Antonetti DA, Barber AJ, Bronson SK, Freeman WM, Gardner TW, Jefferson LS, Kester M, Kimball SR, Krady JK, LaNoue KF, Norbury CC, Quinn PG, Sandirasegarane L, Simpson IA. Diabetic retinopathy: seeing beyond glucose-induced microvascular disease. Diabetes. 2006 Sep; 55(9):2401-11.
  View in: PubMed
 
15. Kumari R, Willing LB, Krady JK, Vannucci SJ, Simpson IA. Impaired wound healing after cerebral hypoxia-ischemia in the diabetic mouse. J Cereb Blood Flow Metab. 2007 Apr; 27(4):710-8.
  View in: PubMed
 
16. Hawkins RA, Simpson IA, Mokashi A, Viña JR. Pyroglutamate stimulates Na+ -dependent glutamate transport across the blood-brain barrier. FEBS Lett. 2006 Aug 7; 580(18):4382-6.
  View in: PubMed
 
17. O'Kane RL, Viña JR, Simpson I, Zaragozá R, Mokashi A, Hawkins RA. Cationic amino acid transport across the blood-brain barrier is mediated exclusively by system y+. Am J Physiol Endocrinol Metab. 2006 Aug; 291(2):E412-9.
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18. Nehlig A, Rudolf G, Leroy C, Rigoulot MA, Simpson IA, Vannucci SJ. Pentylenetetrazol-induced status epilepticus up-regulates the expression of glucose transporter mRNAs but not proteins in the immature rat brain. Brain Res. 2006 Apr 12; 1082(1):32-42.
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19. Hawkins RA, O'Kane RL, Simpson IA, Viña JR. Structure of the blood-brain barrier and its role in the transport of amino acids. J Nutr. 2006 Jan; 136(1 Suppl):218S-26S.
  View in: PubMed
 
20. Ola MS, Berkich DA, Xu Y, King MT, Gardner TW, Simpson I, LaNoue KF. Analysis of glucose metabolism in diabetic rat retinas. Am J Physiol Endocrinol Metab. 2006 Jun; 290(6):E1057-67.
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21. Basile M, Lin R, Kabbani N, Karpa K, Kilimann M, Simpson I, Kester M. Paralemmin interacts with D3 dopamine receptors: implications for membrane localization and cAMP signaling. Arch Biochem Biophys. 2006 Feb 1; 446(1):60-8.
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22. Hawkins RA, Mokashi A, Simpson IA. An active transport system in the blood-brain barrier may reduce levodopa availability. Exp Neurol. 2005 Sep; 195(1):267-71.
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23. Zhang F, Vannucci SJ, Philp NJ, Simpson IA. Monocarboxylate transporter expression in the spontaneous hypertensive rat: effect of stroke. J Neurosci Res. 2005 Jan 1-15; 79(1-2):139-45.
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24. O'Kane RL, Viña JR, Simpson I, Hawkins RA. Na+ -dependent neutral amino acid transporters A, ASC, and N of the blood-brain barrier: mechanisms for neutral amino acid removal. Am J Physiol Endocrinol Metab. 2004 Oct; 287(4):E622-9.
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25. Zhou W, Mustain W, Simpson I. Sound-evoked vestibulo-ocular reflexes (VOR) in trained monkeys. Exp Brain Res. 2004 May; 156(2):129-34.
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26. Burdo JR, Simpson IA, Menzies S, Beard J, Connor JR. Regulation of the profile of iron-management proteins in brain microvasculature. J Cereb Blood Flow Metab. 2004 Jan; 24(1):67-74.
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27. Zhang L, Nair A, Krady K, Corpe C, Bonneau RH, Simpson IA, Vannucci SJ. Estrogen stimulates microglia and brain recovery from hypoxia-ischemia in normoglycemic but not diabetic female mice. J Clin Invest. 2004 Jan; 113(1):85-95.
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28. Vannucci SJ, Simpson IA. Developmental switch in brain nutrient transporter expression in the rat. Am J Physiol Endocrinol Metab. 2003 Nov; 285(5):E1127-34.
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29. Reiter CE, Sandirasegarane L, Wolpert EB, Klinger M, Simpson IA, Barber AJ, Antonetti DA, Kester M, Gardner TW. Characterization of insulin signaling in rat retina in vivo and ex vivo. Am J Physiol Endocrinol Metab. 2003 Oct; 285(4):E763-74.
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30. Simpson IA, Vannucci SJ. Glucose transport into brain: effects of hypoglycemia. Diabetes Nutr Metab. 2002 Oct; 15(5):281-4; discussion 284.
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31. Corpe CP, Bovelander FJ, Munoz CM, Hoekstra JH, Simpson IA, Kwon O, Levine M, Burant CF. Cloning and functional characterization of the mouse fructose transporter, GLUT5. Biochim Biophys Acta. 2002 Jun 7; 1576(1-2):191-7.
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32. Dwyer DS, Vannucci SJ, Simpson IA. Expression, regulation, and functional role of glucose transporters (GLUTs) in brain. Int Rev Neurobiol. 2002; 51:159-88.
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33. Burdo JR, Menzies SL, Simpson IA, Garrick LM, Garrick MD, Dolan KG, Haile DJ, Beard JL, Connor JR. Distribution of divalent metal transporter 1 and metal transport protein 1 in the normal and Belgrade rat. J Neurosci Res. 2001 Dec 15; 66(6):1198-207.
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34. Vannucci SJ, Simpson IA. Synopsis of the workshop entitled "Is lactate a nutrient for neurons" held at the Brain Energy Meeting in Trondheim, Norway. J Neurosci Res. 2001 Dec 1; 66(5):821-3.
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35. Simpson IA, Vannucci SJ, DeJoseph MR, Hawkins RA. Glucose transporter asymmetries in the bovine blood-brain barrier. J Biol Chem. 2001 Apr 20; 276(16):12725-9.
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36. Vannucci SJ, Willing LB, Goto S, Alkayed NJ, Brucklacher RM, Wood TL, Towfighi J, Hurn PD, Simpson IA. Experimental stroke in the female diabetic, db/db, mouse. J Cereb Blood Flow Metab. 2001 Jan; 21(1):52-60.
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37. Rumsey SC, Daruwala R, Al-Hasani H, Zarnowski MJ, Simpson IA, Levine M. Dehydroascorbic acid transport by GLUT4 in Xenopus oocytes and isolated rat adipocytes. J Biol Chem. 2000 Sep 8; 275(36):28246-53.
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38. Vannucci SJ, Rutherford T, Wilkie MB, Simpson IA, Lauder JM. Prenatal expression of the GLUT4 glucose transporter in the mouse. Dev Neurosci. 2000; 22(4):274-82.
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39. Koehler-Stec EM, Li K, Maher F, Vannucci SJ, Smith CB, Simpson IA. Cerebral glucose utilization and glucose transporter expression: response to water deprivation and restoration. J Cereb Blood Flow Metab. 2000 Jan; 20(1):192-200.
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40. Mankowski JL, Queen SE, Kirstein LM, Spelman JP, Laterra J, Simpson IA, Adams RJ, Clements JE, Zink MC. Alterations in blood-brain barrier glucose transport in SIV-infected macaques. J Neurovirol. 1999 Dec; 5(6):695-702.
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41. Liu D, Smith CL, Barone FC, Ellison JA, Lysko PG, Li K, Simpson IA. Astrocytic demise precedes delayed neuronal death in focal ischemic rat brain. Brain Res Mol Brain Res. 1999 May 7; 68(1-2):29-41.
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42. Haspel HC, Stephenson KN, Davies-Hill T, El-Barbary A, Lobo JF, Croxen RL, Mougrabi W, Koehler-Stec EM, Fenstermacher JD, Simpson IA. Effects of barbiturates on facilitative glucose transporters are pharmacologically specific and isoform selective. J Membr Biol. 1999 May 1; 169(1):45-53.
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43. Simpson IA, Appel NM, Hokari M, Oki J, Holman GD, Maher F, Koehler-Stec EM, Vannucci SJ, Smith QR. Blood-brain barrier glucose transporter: effects of hypo- and hyperglycemia revisited. J Neurochem. 1999 Jan; 72(1):238-47.
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44. Koehler-Stec EM, Simpson IA, Vannucci SJ, Landschulz KT, Landschulz WH. Monocarboxylate transporter expression in mouse brain. Am J Physiol. 1998 Sep; 275(3 Pt 1):E516-24.
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45. Vannucci SJ, Koehler-Stec EM, Li K, Reynolds TH, Clark R, Simpson IA. GLUT4 glucose transporter expression in rodent brain: effect of diabetes. Brain Res. 1998 Jun 22; 797(1):1-11.
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46. Vannucci SJ, Reinhart R, Maher F, Bondy CA, Lee WH, Vannucci RC, Simpson IA. Alterations in GLUT1 and GLUT3 glucose transporter gene expression following unilateral hypoxia-ischemia in the immature rat brain. Brain Res Dev Brain Res. 1998 May 15; 107(2):255-64.
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47. Malide D, Davies-Hill TM, Levine M, Simpson IA. Distinct localization of GLUT-1, -3, and -5 in human monocyte-derived macrophages: effects of cell activation. Am J Physiol. 1998 Mar; 274(3 Pt 1):E516-26.
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48. Vannucci SJ, Clark RR, Koehler-Stec E, Li K, Smith CB, Davies P, Maher F, Simpson IA. Glucose transporter expression in brain: relationship to cerebral glucose utilization. Dev Neurosci. 1998; 20(4-5):369-79.
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49. Sorbara LR, Davies-Hill TM, Koehler-Stec EM, Vannucci SJ, Horne MK, Simpson IA. Thrombin-induced translocation of GLUT3 glucose transporters in human platelets. Biochem J. 1997 Dec 1; 328 ( Pt 2):511-6.
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50. Payne J, Maher F, Simpson I, Mattice L, Davies P. Glucose transporter Glut 5 expression in microglial cells. Glia. 1997 Nov; 21(3):327-31.
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51. Vannucci SJ, Maher F, Simpson IA. Glucose transporter proteins in brain: delivery of glucose to neurons and glia. Glia. 1997 Sep; 21(1):2-21.
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52. Rumsey SC, Kwon O, Xu GW, Burant CF, Simpson I, Levine M. Glucose transporter isoforms GLUT1 and GLUT3 transport dehydroascorbic acid. J Biol Chem. 1997 Jul 25; 272(30):18982-9.
  View in: PubMed
 
53. Kol S, Ben-Shlomo I, Ruutiainen K, Ando M, Davies-Hill TM, Rohan RM, Simpson IA, Adashi EY. The midcycle increase in ovarian glucose uptake is associated with enhanced expression of glucose transporter 3. Possible role for interleukin-1, a putative intermediary in the ovulatory process. J Clin Invest. 1997 May 1; 99(9):2274-83.
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54. Vannucci SJ, Gibbs EM, Simpson IA. Glucose utilization and glucose transporter proteins GLUT-1 and GLUT-3 in brains of diabetic (db/db) mice. Am J Physiol. 1997 Feb; 272(2 Pt 1):E267-74.
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55. Sorbara LR, Maldarelli F, Chamoun G, Schilling B, Chokekijcahi S, Staudt L, Mitsuya H, Simpson IA, Zeichner SL. Human immunodeficiency virus type 1 infection of H9 cells induces increased glucose transporter expression. J Virol. 1996 Oct; 70(10):7275-9.
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56. Maher F, Davies-Hill TM, Simpson IA. Substrate specificity and kinetic parameters of GLUT3 in rat cerebellar granule neurons. Biochem J. 1996 May 1; 315 ( Pt 3):827-31.
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57. Simpson IA, Davies P. Reduced glucose transporter concentrations in brains of patients with Alzheimer's disease. Ann Neurol. 1994 Nov; 36(5):800-1.
  View in: PubMed
 
58. Maher F, Vannucci SJ, Simpson IA. Glucose transporter proteins in brain. FASEB J. 1994 Oct; 8(13):1003-11.
  View in: PubMed
 
59. Vannucci SJ, Maher F, Koehler E, Simpson IA. Altered expression of GLUT-1 and GLUT-3 glucose transporters in neurohypophysis of water-deprived or diabetic rats. Am J Physiol. 1994 Oct; 267(4 Pt 1):E605-11.
  View in: PubMed
 
60. Nishimura H, Simpson IA. Staurosporine inhibits phorbol 12-myristate 13-acetate- and insulin-stimulated translocation of GLUT1 and GLUT4 glucose transporters in rat adipose cells. Biochem J. 1994 Aug 15; 302 ( Pt 1):271-7.
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61. Maher F, Simpson IA. Modulation of expression of glucose transporters GLUT3 and GLUT1 by potassium and N-methyl-D-aspartate in cultured cerebellar granule neurons. Mol Cell Neurosci. 1994 Aug; 5(4):369-75.
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62. Simpson IA, Vannucci SJ, Maher F. Glucose transporters in mammalian brain. Biochem Soc Trans. 1994 Aug; 22(3):671-5.
  View in: PubMed
 
63. Maher F, Simpson IA. The GLUT3 glucose transporter is the predominant isoform in primary cultured neurons: assessment by biosynthetic and photoaffinity labelling. Biochem J. 1994 Jul 15; 301 ( Pt 2):379-84.
  View in: PubMed
 
64. Simpson IA, Chundu KR, Davies-Hill T, Honer WG, Davies P. Decreased concentrations of GLUT1 and GLUT3 glucose transporters in the brains of patients with Alzheimer's disease. Ann Neurol. 1994 May; 35(5):546-51.
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65. Nishimura H, Zarnowski MJ, Simpson IA. Glucose transporter recycling in rat adipose cells. Effects of potassium depletion. J Biol Chem. 1993 Sep 15; 268(26):19246-53.
  View in: PubMed
 
66. Satoh S, Nishimura H, Clark AE, Kozka IJ, Vannucci SJ, Simpson IA, Quon MJ, Cushman SW, Holman GD. Use of bismannose photolabel to elucidate insulin-regulated GLUT4 subcellular trafficking kinetics in rat adipose cells. Evidence that exocytosis is a critical site of hormone action. J Biol Chem. 1993 Aug 25; 268(24):17820-9.
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67. Nishimura H, Pallardo FV, Seidner GA, Vannucci S, Simpson IA, Birnbaum MJ. Kinetics of GLUT1 and GLUT4 glucose transporters expressed in Xenopus oocytes. J Biol Chem. 1993 Apr 25; 268(12):8514-20.
  View in: PubMed
 
68. Sutkowski EM, Maher F, Laurenza A, Simpson IA, Seamon KB. Interaction of 7-bromoacetyl-7-desacetylforskolin, and alkylating derivative of forskolin, with bovine brain adenylyl cyclase and human erythrocyte glucose transporter. Biochemistry. 1993 Mar 9; 32(9):2415-22.
  View in: PubMed
 
69. Maher F, Vannucci SJ, Simpson IA. Glucose transporter isoforms in brain: absence of GLUT3 from the blood-brain barrier. J Cereb Blood Flow Metab. 1993 Mar; 13(2):342-5.
  View in: PubMed
 
70. Maher F, Simpson IA, Vannucci SJ. Alterations in brain glucose transporter proteins, GLUT1 and GLUT3, in streptozotocin diabetic rats. Adv Exp Med Biol. 1993; 331:9-12.
  View in: PubMed
 
71. Vannucci SJ, Nishimura H, Satoh S, Cushman SW, Holman GD, Simpson IA. Cell surface accessibility of GLUT4 glucose transporters in insulin-stimulated rat adipose cells. Modulation by isoprenaline and adenosine. Biochem J. 1992 Nov 15; 288 ( Pt 1):325-30.
  View in: PubMed
 
72. Bilan PJ, Mitsumoto Y, Maher F, Simpson IA, Klip A. Detection of the GLUT3 facilitative glucose transporter in rat L6 muscle cells: regulation by cellular differentiation, insulin and insulin-like growth factor-I. Biochem Biophys Res Commun. 1992 Jul 31; 186(2):1129-37.
  View in: PubMed
 
73. Robbins JD, Appel NM, Laurenza A, Simpson IA, De Souza EB, Seamon KB. Differential identification and localization of adenylyl cyclase and glucose transporter in brain using iodinated derivatives of forskolin. Brain Res. 1992 May 22; 581(1):148-52.
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74. Goto Y, Sumida Y, Flanagan JE, Robinson FW, Simpson IA, Cushman SW, Kono T. Effects of fluorescein isothiocyanate on insulin actions in rat adipocytes. Arch Biochem Biophys. 1992 Mar; 293(2):224-30.
  View in: PubMed
 
75. Maher F, Vannucci S, Takeda J, Simpson IA. Expression of mouse-GLUT3 and human-GLUT3 glucose transporter proteins in brain. Biochem Biophys Res Commun. 1992 Jan 31; 182(2):703-11.
  View in: PubMed
 
76. Honnor RC, Naghshineh S, Cushman SW, Wolff J, Simpson IA, Londos C. Cholera and pertussis toxins modify regulation of glucose transport activity in rat adipose cells: evidence for mediation of a cAMP-independent process by G-proteins. Cell Signal. 1992 Jan; 4(1):87-98.
  View in: PubMed
 
77. Nishimura H, Saltis J, Habberfield AD, Garty NB, Greenberg AS, Cushman SW, Londos C, Simpson IA. Phosphorylation state of the GLUT4 isoform of the glucose transporter in subfractions of the rat adipose cell: effects of insulin, adenosine, and isoproterenol. Proc Natl Acad Sci U S A. 1991 Dec 15; 88(24):11500-4.
  View in: PubMed
 
78. Maher F, Davies-Hill TM, Lysko PG, Henneberry RC, Simpson IA. Expression of two glucose transporters, GLUT1 and GLUT3, in cultured cerebellar neurons: Evidence for neuron-specific expression of GLUT3. Mol Cell Neurosci. 1991 Aug; 2(4):351-60.
  View in: PubMed
 
79. Saltis J, Habberfield AD, Egan JJ, Londos C, Simpson IA, Cushman SW. Role of protein kinase C in the regulation of glucose transport in the rat adipose cell. Translocation of glucose transporters without stimulation of glucose transport activity. J Biol Chem. 1991 Jan 5; 266(1):261-7.
  View in: PubMed
 
80. Weber TM, Joost HG, Kuroda M, Cushman SW, Simpson IA. Subcellular distribution and phosphorylation state of insulin receptors from insulin- and isoproterenol-treated rat adipose cells. Cell Signal. 1991; 3(1):51-8.
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81. Simpson IA, Cushman SW, Egan JJ, Habberfield AD, Londos C, Nishimura H, Saltis J. Hormonal regulation of glucose transport in rat adipose cells. Biochem Soc Trans. 1990 Dec; 18(6):1123-5.
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82. Holman GD, Kozka IJ, Clark AE, Flower CJ, Saltis J, Habberfield AD, Simpson IA, Cushman SW. Cell surface labeling of glucose transporter isoform GLUT4 by bis-mannose photolabel. Correlation with stimulation of glucose transport in rat adipose cells by insulin and phorbol ester. J Biol Chem. 1990 Oct 25; 265(30):18172-9.
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83. Egan JJ, Saltis J, Wek SA, Simpson IA, Londos C. Insulin, oxytocin, and vasopressin stimulate protein kinase C activity in adipocyte plasma membranes. Proc Natl Acad Sci U S A. 1990 Feb; 87(3):1052-6.
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84. Werner H, Raizada MK, Mudd LM, Foyt HL, Simpson IA, Roberts CT, LeRoith D. Regulation of rat brain/HepG2 glucose transporter gene expression by insulin and insulin-like growth factor-I in primary cultures of neuronal and glial cells. Endocrinology. 1989 Jul; 125(1):314-20.
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85. Lönnroth P, Appell KC, Wesslau C, Cushman SW, Simpson IA, Smith U. Insulin-induced subcellular redistribution of insulin-like growth factor II receptors in the rat adipose cell. Counterregulatory effects of isoproterenol, adenosine, and cAMP analogues. J Biol Chem. 1988 Oct 25; 263(30):15386-91.
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86. Appell KC, Simpson IA, Cushman SW. Characterization of the stimulatory action of insulin on insulin-like growth factor II binding to rat adipose cells. Differences in the mechanism of insulin action on insulin-like growth factor II receptors and glucose transporters. J Biol Chem. 1988 Aug 5; 263(22):10824-9.
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87. Kahn BB, Simpson IA, Cushman SW. Divergent mechanisms for the insulin resistant and hyperresponsive glucose transport in adipose cells from fasted and refed rats. Alterations in both glucose transporter number and intrinsic activity. J Clin Invest. 1988 Aug; 82(2):691-9.
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88. Joost HG, Habberfield AD, Simpson IA, Laurenza A, Seamon KB. Activation of adenylate cyclase and inhibition of glucose transport in rat adipocytes by forskolin analogues: structural determinants for distinct sites of action. Mol Pharmacol. 1988 Apr; 33(4):449-53.
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89. Joost HG, Weber TM, Cushman SW, Simpson IA. Activity and phosphorylation state of glucose transporters in plasma membranes from insulin-, isoproterenol-, and phorbol ester-treated rat adipose cells. J Biol Chem. 1987 Aug 15; 262(23):11261-7.
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90. Karnieli E, Chernow B, Hissin PJ, Simpson IA, Foley JE. Insulin stimulates glucose transport in isolated human adipose cells through a translocation of intracellular glucose transporters to the plasma membrane: a preliminary report. Horm Metab Res. 1986 Dec; 18(12):867-8.
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91. Joost HG, Weber TM, Cushman SW, Simpson IA. Insulin-stimulated glucose transport in rat adipose cells. Modulation of transporter intrinsic activity by isoproterenol and adenosine. J Biol Chem. 1986 Aug 5; 261(22):10033-6.
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92. Horuk R, Matthaei S, Olefsky JM, Baly DL, Cushman SW, Simpson IA. Biochemical and functional heterogeneity of rat adipocyte glucose transporters. J Biol Chem. 1986 Feb 5; 261(4):1823-8.
  View in: PubMed
 
93. Simpson IA, Cushman SW. Hormonal regulation of mammalian glucose transport. Annu Rev Biochem. 1986; 55:1059-89.
  View in: PubMed
 
94. Cushman SW, Simpson IA. Integral membrane protein translocations in the mechanism of insulin action. Biochem Soc Symp. 1985; 50:127-49.
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95. Sonne O, Simpson IA. Internalization of insulin and its receptor in the isolated rat adipose cell. Time-course and insulin concentration dependency. Biochim Biophys Acta. 1984 Aug 17; 804(4):404-13.
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96. Wardzala LJ, Simpson IA, Rechler MM, Cushman SW. Potential mechanism of the stimulatory action of insulin on insulin-like growth factor II binding to the isolated rat adipose cell. Apparent redistribution of receptors cycling between a large intracellular pool and the plasma membrane. J Biol Chem. 1984 Jul 10; 259(13):8378-83.
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97. Cushman SW, Wardzala LJ, Simpson IA, Karnieli E, Hissin PJ, Wheeler TJ, Hinkle PC, Salans LB. Insulin-induced translocation of intracellular glucose transporters in the isolated rat adipose cell. Fed Proc. 1984 May 15; 43(8):2251-5.
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98. Simpson IA, Hedo JA. Insulin receptor phosphorylation may not be a prerequisite for acute insulin action. Science. 1984 Mar 23; 223(4642):1301-4.
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99. Simpson IA, Hedo JA, Cushman SW. Insulin-induced internalization of the insulin receptor in the isolated rat adipose cell. Detection of both major receptor subunits following their biosynthetic labeling in culture. Diabetes. 1984 Jan; 33(1):13-8.
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100. Simpson IA, Yver DR, Hissin PJ, Wardzala LJ, Karnieli E, Salans LB, Cushman SW. Insulin-stimulated translocation of glucose transporters in the isolated rat adipose cells: characterization of subcellular fractions. Biochim Biophys Acta. 1983 Dec 19; 763(4):393-407.
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101. Horuk R, Rodbell M, Cushman SW, Simpson IA. Identification and characterization of the rat adipocyte glucose transporter by photoaffinity crosslinking. FEBS Lett. 1983 Dec 12; 164(2):261-6.
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102. Wang CC, Sonne O, Hedo JA, Cushman SW, Simpson IA. Insulin-induced internalization of the insulin receptor in the isolated rat adipose cell. Detection of the internalized 138-kilodalton receptor subunit using a photoaffinity 125I-insulin. J Biol Chem. 1983 Apr 25; 258(8):5129-34.
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103. Hissin PJ, Foley JE, Wardzala LJ, Karnieli E, Simpson IA, Salans LB, Cushman SW. Mechanism of insulin-resistant glucose transport activity in the enlarged adipose cell of the aged, obese rat. J Clin Invest. 1982 Oct; 70(4):780-90.
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104. Hissin PJ, Karnieli E, Simpson IA, Salans LB, Cushman SW. A possible mechanism of insulin resistance in the rat adipose cell with high-fat/low-carbohydrate feeding. Depletion of intracellular glucose transport systems. Diabetes. 1982 Jul; 31(7):589-92.
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105. Wheeler TJ, Simpson IA, Sogin DC, Hinkle PC, Cushman SW. Detection of the rat adipose cell glucose transporter with antibody against the human red cell glucose transporter. Biochem Biophys Res Commun. 1982 Mar 15; 105(1):89-95.
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106. Cushman SW, Hissin PJ, Wardzala LJ, Foley JE, Simpson IA, Karnieli E, Salans LB. Mechanism of insulin-resistance in the adipose cell in the aging-rat model of obesity. Biochem Soc Trans. 1981 Dec; 9(6):518-22.
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107. Karnieli E, Hissin PJ, Simpson IA, Salans LB, Cushman SW. A possible mechanism of insulin resistance in the rat adipose cell in streptozotocin-induced diabetes mellitus. Depletion of intracellular glucose transport systems. J Clin Invest. 1981 Sep; 68(3):811-4.
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108. Karnieli E, Zarnowski MJ, Hissin PJ, Simpson IA, Salans LB, Cushman SW. Insulin-stimulated translocation of glucose transport systems in the isolated rat adipose cell. Time course, reversal, insulin concentration dependency, and relationship to glucose transport activity. J Biol Chem. 1981 May 25; 256(10):4772-7.
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109. Simpson IA, Pfeuffer T. Modulation of beta-adrenergic agonist binding by guanylnucleotides in avian erythrocytes. FEBS Lett. 1980 Jun 16; 115(1):113-7.
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110. Simpson IA, Hollaway MR, Beard J. The subunit structure of rabbit skeletal-muscle phosphofructokinase and the amino acid sequence of the tryptic peptide containing the highly reactive thiol group. Biochem J. 1977 May 1; 163(2):309-16.
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Keyword
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Keywords   
Monosaccharide Transport Proteins
Glucose
Blood-Brain Barrier
Nerve Tissue Proteins
Brain
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Co-Authors  
Freeman, Willard
Jefferson, Leonard
Kester, Mark
Kimball, Scot
Lanoue, Kathryn
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