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• W4309442605 abstract "Abstract Alcohol Use Disorders (AUD) is characterized by compulsion-like alcohol drinking (CLAD), and this intake despite negative consequences can be a major clinical obstacle. With the quite limited treatment options available for AUD, there is a significant and critical unmet need for novel therapies. The noradrenergic system is an important hub for the stress response as well as maladaptive drives for alcohol, and pre-clinical (including our own) and clinical studies have shown that drugs targeting the α1 adrenenergic receptors (ARs) may represent a pharmacological treatment for pathological drinking. However, the involvement of β ARs for treating human drinking AUD has received somewhat scant investigation, and we sought to provide pre-clinical validation for possible AR utility for CLAD. Thus, we first examined whether β AR antagonist propranolol, betaxolol (β1), and ICI, 118 551 (β2) impacted compulsion-like intake and alcohol-only drinking (AOD) in male Wistar rats through systemic injections. The systemic highest dose of propranolol (10mg/kg) reduced both AOD and CLAD. 5mg/kg propranolol affected CLAD more than AOD, with no effects of 2.5mg/kg. Similar to propranolol, betaxolol also only decreased CLAD at the lower dose (2.5mg/kg). ICI 118.551 had no effects, suggesting propranolol regulates alcohol intake through β1. Also, while AR compounds might have utility for AUD, these compounds can also lead to undesirable cardiovascular system side effects; thus, any strategy incorporating lower doses of these compounds to reduce drinking could have broad utility. Importantly, here we found that a combination of ineffective doses of propranolol and prazosin administrated together did reduce both CLAD and AOD. Finally, we investigated the effect of propranolol and betaxolol into two brain areas related to pathological drinking, the anterior insula (aINS) and medial prefrontal cortex (mPFC). Surprisingly, propranolol (1-10μg) in aINS or mPFC did not affect CLAD or AOD (although with a trend for aINS betaxolol to impact CLAD), suggesting propranolol regulation of alcohol drinking through a target other than aINS and mPFC. Together, our findings provide new pharmacological insights into noradrenergic regulation of alcohol consumption, which may inform AUD therapy." @default.
• W4309442605 created "2022-11-27" @default.
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• W4309442605 date "2022-11-20" @default.
• W4309442605 modified "2023-10-01" @default.
• W4309442605 title "THE ROLE OF ALPHA- AND BETA-ADRENERGIC RECEPTORS ON COMPULSION-LIKE ALCOHOL DRINKING" @default.
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• W4309442605 doi "https://doi.org/10.1101/2022.11.20.517252" @default.
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