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001-es BibID:	BIBFORM028449
Első szerző:	Szilvássy Zoltán (belgyógyász, farmakológus, klinikai farmakológus)
Cím:	Insulin resistance occurs in parallel with sensory neuropathy in streptozotocin-induced diabetes in rats : differential response to early vs late insulin supplementation / Szilvássy Z., Németh J., Kovács P., Paragh G., Sári R., Vígh L., Peitl B.
Dátum:	2012
Megjegyzések:	We investigated whether progressive sensory neuropathy was accompanied by changes in whole-body insulin sensitivity (WBIS) in rats made diabetic by streptozotocin (STZ). The effects of early and late insulin supplementation were also studied. The STZ-treated rats failed to gain weight and exhibited stable hyperglycemia and low plasma insulin levels with a decrease in nerve conduction velocity (NCV) measured in A and C fibers of the saphenous nerve. A decreased sensory neuropeptide (SNP) release such as that of substance P, somatostatin, and calcitonin gene-related peptide determined from organ fluid of tracheal preparations subjected to electrical field stimulation also occurred in diabetic animals. These features were accompanied by a decrease in WBIS measured by hyperinsulinemic-euglycemic glucose clamping and a decrease in insulin-stimulated glucose uptake in cardiac and gastrocnemius muscle. When insulin supplementation with slow-release implants (2 IU/d) was started 4 weeks after STZ injection, blood glucose level normalized. Both insulin sensitivity and sensory nerve function reflected in either NCV or SNP release completely recovered by the 12th post-STZ week. When the insulin implants were applied from the eighth post-STZ week, both WBIS and glucose uptake remained significantly decreased, with a seriously impaired NCV and SNP release with strong hyperglycemia. Late insulin supplementation, however, even by using double implantation from the 10th post-STZ week, was unable to restore blood glucose, WBIS, NCV, and SNP release by the 12th week. Insulin resistance occurs in parallel with sensory neuropathy in STZ-diabetic rats. Both can be improved by early but not late insulin supplementation.
Tárgyszavak:	Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Metabolism. - 61 : 6 (2012), p. 776-786. -
További szerzők:	Németh József (1954-) (vegyész, analitikus) Kovács Péter (1947-) (belgyógyász, kardiológus, klinikai farmakológus) Paragh György (1953-) (belgyógyász) Sári Réka (farmakológus) Vígh László (orvos Szeged) Peitl Barna (1972-) (orvos, farmakológus)
Pályázati támogatás:	TÁMOP-4.2.2.-08/1-2008-0014 TÁMOP 75965 OTKA NKFP_07-A2-2008-0260 Egyéb GOP-1.1.207/1-2008-0004 Egyéb OM00174/2008 Egyéb GOP-1.1.1-07/1-2008-0032 Egyéb GOP-1.2.1-082009-0023 Egyéb
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat DOI
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