HU-211, a non-psychotropic cannabinoid, rescues cortical neurones from excitatory amino acid toxicity in culture.

Abstract:

:The present study examined potential neuroprotective effects of HU-211, a synthetic non-psychotropic cannabinoid with non-competitive NMDA antagonist properties on neurones exposed to various excitotoxins in culture. HU-211 was found to protect neurones from NMDA and quisqualate-induced toxicity but not that produced by AMPA or kainate. NMDA-mediated neurotoxicity was blocked by HU-211 in a dose dependent manner with an EC50 = 3.8 +/- 0.9 microM. Radioligand binding studies have shown that HU-211 inhibits the binding of [3H]MK-801 to rat forebrain membranes (KI = 11.0 microM +/- 1.323) in a competitive manner, but was unable to displace [3H]kainate and [3H]AMPA binding. These data suggest that the neuroprotective activity of HU-211 is directly associated with the NMDA receptor channel and possibly with the quisqualate receptor of the metabotropic class. Thus, HU-211 appears to act as an NMDA open channel blocker and shows promise as a novel neuroprotectant for clinical use.

journal_name

Neuroreport

journal_title

Neuroreport

authors

Eshhar N,Striem S,Biegon A

doi

10.1097/00001756-199312000-00013

subject

Has Abstract

pub_date

1993-12-13 00:00:00

pages

237-40

issue

3

eissn

0959-4965

issn

1473-558X

journal_volume

5

pub_type

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