Intranasal insulin affects adenyl cyclase system in rat tissues in neonatal diabetes

Abstract: The changes in hormone-regulated adenylyl cyclase (AC) signaling system implicated in control of the nervous, cardiovascular and reproductive systems may contribute to complications of diabetes mellitus (DM). We investigated the functional state of AC system in the brain, myocardium, ovary and uterus of rats with neonatal DM and examined the influence of intranasally administered insulin on the sensitivity of this system to biogenic amines and polypeptide hormones. The regulatory effects of somatostatin and 5-HT1BR-agonist 5-nonyloxytryptamine acting via Gi protein-coupled receptors were significantly decreased in DM and partially restored in insulin-treated rats. The effects of hormones, activators of AC, are changed in tissue- and receptorspecific manner, and intranasal insulin restored the effects rather close to the level in control. In insulin-treated non-diabetic rats, AC stimulating effects of isoproterenol and relaxin in the myocardium and of human chorionic gonadotropin in the ovaries were decreased, while the effects of hormones, inhibitors of AC, were increased. These data indicate that with intranasal insulin, Gi protein-mediated signaling pathways continue to gain strength. The obtained data on the influence of hormones on AC system in the brain, myocardium, ovary and uterus allow looking anew into the mechanisms of therapeutic effects of intranasal insulin.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
Intranasal insulin affects adenyl cyclase system in rat tissues in neonatal diabetes ; volume:7 ; number:1 ; year:2012 ; pages:33-47 ; extent:15
Open life sciences ; 7, Heft 1 (2012), 33-47 (gesamt 15)

Urheber
Shpakov, Alexander
Chistyakova, Oksana
Derkach, Kira
Moyseyuk, Irina
Bondareva, Vera

DOI
10.2478/s11535-011-0089-6
URN
urn:nbn:de:101:1-2409201906326.114996863292
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
15.08.2025, 07:21 MESZ

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Beteiligte

  • Shpakov, Alexander
  • Chistyakova, Oksana
  • Derkach, Kira
  • Moyseyuk, Irina
  • Bondareva, Vera

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