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The novel ghrelin receptor inverse agonist PF-5190457 administered with alcohol: preclinical safety experiments and a phase 1b human laboratory study
NIAAA, MD 20892 USA; NIDA, MD 20892 USA.
NIDA, MD 20892 USA.
Univ Rhode Isl, RI 02881 USA.
NIAAA, MD USA.
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2020 (English)In: Molecular Psychiatry, ISSN 1359-4184, E-ISSN 1476-5578, Vol. 25, no 2, p. 461-475Article in journal (Refereed) Published
Abstract [en]

Rodent studies indicate that ghrelin receptor blockade reduces alcohol consumption. However, no ghrelin receptor blockers have been administered to heavy alcohol drinking individuals. Therefore, we evaluated the safety, tolerability, pharmacokinetic (PK), pharmacodynamic (PD) and behavioral effects of a novel ghrelin receptor inverse agonist, PF-5190457, when co-administered with alcohol. We tested the effects of PF-5190457 combined with alcohol on locomotor activity, loss-of-righting reflex (a measure of alcohol sedative actions), and on blood PF-5190457 concentrations in rats. Then, we performed a single-blind, placebo-controlled, within-subject human study with PF-5190457 (placebo/0 mg b.i.d., 50 mg b.i.d., 100 mg b.i.d.). Twelve heavy drinkers during three identical visits completed an alcohol administration session, subjective assessments, and an alcohol cue-reactivity procedure, and gave blood samples for PK/PD testing. In rats, PF-5190457 did not interact with the effects of alcohol on locomotor activity or loss-of-righting reflex. Alcohol did not affect blood PF-5190457 concentrations. In humans, all adverse events were mild or moderate and did not require discontinuation or dose reductions. Drug dose did not alter alcohol concentration or elimination, alcohol-induced stimulation or sedation, or mood during alcohol administration. Potential PD markers of PF-5190457 were acyl-to-total ghrelin ratio and insulin-like growth factor-1. PF-5190457 (100 mg b.i.d.) reduced alcohol craving during the cue-reactivity procedure. This study provides the first translational evidence of safety and tolerability of the ghrelin receptor inverse agonist PF-5190457 when co-administered with alcohol. PK/PD/behavioral findings support continued research of PF-5190457 as a potential pharmacological agent to treat alcohol use disorder.

Place, publisher, year, edition, pages
NATURE PUBLISHING GROUP , 2020. Vol. 25, no 2, p. 461-475
National Category
Pharmaceutical Sciences
Identifiers
URN: urn:nbn:se:liu:diva-163656DOI: 10.1038/s41380-018-0064-yISI: 000510855100017PubMedID: 29728704OAI: oai:DiVA.org:liu-163656DiVA, id: diva2:1394199
Note

Funding Agencies|NIH - Division of Intramural Clinical and Biological Research of the National Institute on Alcohol Abuse and Alcoholism (NIAAA) [ZIA-AA000218]; NIH - Intramural Research Program of the National Institute on Drug Abuse (NIDA) [ZIA-AA000218]; National Center for Advancing Translational Sciences (NCATS)United States Department of Health & Human ServicesNational Institutes of Health (NIH) - USANIH National Center for Advancing Translational Sciences (NCATS) [UH2/UH3-TR000963]; NIAAA Division of Medication Development [UH2/UH3-TR000963]; NCATSUnited States Department of Health & Human ServicesNational Institutes of Health (NIH) - USANIH National Center for Advancing Translational Sciences (NCATS) [UH2/UH3-TR000963]

Available from: 2020-02-18 Created: 2020-02-18 Last updated: 2020-02-18

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