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Nicotine and tobacco-related deaths remains a leading cause of preventable death and disease in the United States. Several studies indicate that modulation of the endocannabinoid system, primarily of the endocannabinoid 2-Arachidonoylglycerol (2-AG), alters nicotinic dependence behaviors in rodents. This study, using transgenic knock-out (KO) mice, evaluated the role of the two 2-AG biosynthesis enzymes, (Diacylglycerol lipase-α) DAGL-α and DAGL-β in spontaneous nicotine withdrawal. DAGL-α deletion prevents somatic and affective signs of nicotine withdrawal, while DAGL-β deletion plays a role in hyperalgesia due to nicotine withdrawal. These results suggest a differential role of these enzymes in the various signs of nicotine withdrawal. Our behavioral findings relate to the distribution of these enzymes with DAGL-β being highly expressed in macrophages and DAGL-α in neurons. This study offers new potential targets for smoking cessation therapies.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10529956 | PMC |
| http://dx.doi.org/10.1016/j.brainres.2023.148483 | DOI Listing |
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