Steun ons werk
Decorative header background

Activation of nucleus accumbens μ-opioid receptors enhances the response to a glycaemic challenge

Onderzoeksgroep la Fleur
Publicatiejaar 2021
Gepubliceerd in Journal of Neuroendocrinology
Auteur(s) Laura L. Koekkoek, Tess Kool, Leslie Eggels, Luna L van der Gun, Khalid Lamuadni, Margo Slomp, Charlene Diepenbroek, Mireillle J Serlie, A. Kalsbeek, S.E. La Fleur

Opioids are known to affect blood glucose levels but their exact role in the physiological control of glucose metabolism remains unclear. Although there are numerous studies investigating the peripheral effects of opioid stimulation, little is known about how central opioids control blood glucose and which brain areas are involved. One brain area possibly involved is the nucleus accumbens because, as well as being a key site for opioid effects on food intake, it has also been implicated in the control of blood glucose levels. Within the nucleus accumbens, μ-opioid receptors are most abundantly expressed. Therefore, in the present study, we investigated the role of μ-opioid receptors in the nucleus accumbens in the control of glucose metabolism. We show that infusion of the μ-opioid receptor agonist [d-Ala2 , N-MePhe4 , Gly-ol]-enkephalin (DAMGO) in the nucleus accumbens by itself does not affect blood glucose levels, but it enhances the glycaemic response after both an insulin tolerance test, as well as a glucose tolerance test. These findings indicate that the nucleus accumbens plays a role in the central effects of opioids on glucose metabolism, and highlight the possibility of nucleus accumbens μ-opioid receptors as a therapeutic target for enhancing the counter-regulatory response.

Steun ons werk

De Stichting Vrienden van het Herseninstituut ondersteunt baanbrekend hersenonderzoek. U kunt ons daarbij helpen.

Steun ons werk

Wij, hersenonderzoekers, willen het brein nog beter begrijpen en zo doorbraken realiseren in de behandeling van ziektes als MS, Parkinson, Alzheimer en depressie. Om onze missie te volbrengen, willen wij ons volledig concentreren op ons onderzoek. Wil je ons daarbij helpen?

Doe een donatie of  schrijf je in voor onze nieuwsbrief!

Hartelijk dank!