Physiological evidence for interaction between the HIV-1 co-receptor CXCR4 and the cannabinoid system in the brain

British Journal of Pharmacology
Khalid BenamarMartin W Adler

Abstract

The chemokine, stromal cell-derived growth factor-1alpha (SDF-1alpha/CXCL12), a member of the CXC chemokine family, and the ligand for CXCR4, the co-receptor involved in the entry of human immunodeficiency virus-1 (HIV-1), was tested for its possible interaction with a physiological response to a cannabinoid. The cannabinoid agonist, an aminoalkylindole, (+)-WIN 55,212-2 [(4,5-dihydro-2-methyl-4(4-morpholinylmethyl)-1-(1-naphthalenyl-carbonyl)-6H-pyrrolo[3,2,1ij]quinolin-6-one], was infused directly into the preoptic anterior hypothalamus (POAH), the primary brain area involved in thermoregulation. WIN 55,212-2 (5-15 microg) evoked a dose-related hypothermia, which was attenuated by SDF-1alpha/CXCL12 microinjected directly into the POAH. The inhibitory effect of SDF-1alpha/CXCL12 on WIN 55,212-2-induced hypothermia was reversed by 1,1'-[1,4-phenylenebis(methylene)]bis[1,4,8,11-tetraazacyclotetradecane] octohydrobromide dihydrate, an antagonist of SDF-1alpha/CXCL12, acting at its receptor, CXCR4. This study provides the first in vivo evidence for a thermoregulatory interaction between the HIV-1 co-receptor and the cannabinoid system in the brain.

References

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Citations

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May 11, 2002·Life Sciences·Khalid BenamarMartin W Adler
Jul 20, 2002·Proceedings of the National Academy of Sciences of the United States of America·Imre SzaboThomas J Rogers
Aug 13, 2004·Brain Research·Khalid BenamarMartin W Adler
Oct 6, 2005·Journal of Leukocyte Biology·Martin W Adler, Thomas J Rogers
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Related Concepts

Cannabinoids
Microinjections
Stromal Cell-Derived Factor-1alpha
Stromal Cell-Derived Factor 1
Naphthalenes
(2,3-dihydro-5-methyl-3-((4-morpholinyl)methyl)pyrrolo-(1,2,3-de)-1,4-benzoxazin-6-yl)(1-naphthalenyl)methanone monomethanesulfonate
Induced Hypothermia (Finding)
CXCR4 gene
CXCL12 gene
Antagonist Muscle Action

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