Contact Information

Overview of the Lab

*A joint National Institute on Alcohol Abuse and Alcoholism (NIAAA) and National Institute on Drug Abuse (NIDA) Laboratory

Dr. Leggio’s CPN laboratory conducts clinical and translational inpatient and outpatient studies to identify possible novel medications for addiction. His group uses a combination of state-of-the-art, innovative bio behavioral and pharmacological procedures performed under well-controlled human laboratory conditions. Imaging brain techniques, such as fMRI and PET, are also employed. Dr. Leggio and his team are particularly interested in the role of the gut-liver-brain axis in alcohol- and drug-seeking behaviors. Specifically, the CPN laboratory is currently investigating the potential role of feeding-related pathways, such as ghrelin, leptin, oxytocin and GLP-1, as possible new neuropharmacological targets for the treatment of alcohol and substance use disorders. Other neuroendocrine pathways are also under investigation, such as the aldosterone / mineralocorticoid receptor pathway. The CPN laboratory has recently expanded its research looking at the role of the gut microbiota in heavy drinkers with a special emphasis on the relationships between alcohol-related seeking behaviors and the microbiota-gut-brain axis. Future research includes work on the effects of bariatric surgery on alcohol-related seeking behaviors. Both preclinical and human approaches are under development to shed light on the possible role of these pathways in alcohol and substance use disorders. 

For more information on the Laboratory on Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, visit also our section on the NIDA Intramural Research Program website

 

Clinical Protocol

17-DA-N075: Manipulating ghrelin signaling via GOAT inhibition in alcohol use disorder
CllinicalTrials.gov Identifier: NCT03896516
 

Selected Publications

  1. Lee MR, Shnitko TA, Blue SW, Kaucher AV, Winchell AJ, Erikson DW, Grant KA, Leggio L. Labeled oxytocin administered via the intranasal route reaches the brain in rhesus macaques. Nat Commun. 2020;11(1):2783.
  2. Agabio R, Sinclair JM, Addolorato G, Aubin HJ, Beraha EM, Caputo F, Chick JD, de La Selle P, Franchitto N, Garbutt JC, Haber PS, Heydtmann M, Jaury P, Lingford-Hughes AR, Morley KC, Müller CA, Owens L, Pastor A, Paterson LM, Pélissier F, Rolland B, Stafford A, Thompson A, van den Brink W, de Beaurepaire R, Leggio L. Baclofen for the treatment of alcohol use disorder: the Cagliari Statement. Lancet Psychiatry. 2018;5(12):957-960.
  3. Lee MR, Tapocik JD, Ghareeb M, Schwandt ML, Dias AA, Le AN, Cobbina E, Farinelli LA, Bouhlal S, Farokhnia M, Heilig M, Akhlaghi F, Leggio L. The novel ghrelin receptor inverse agonist PF-5190457 administered with alcohol: preclinical safety experiments and a phase 1b human laboratory study. Mol Psychiatry. 2020;25(2):461-475.
  4. Farokhnia M, Grodin EN, Lee MR, Oot EN, Blackburn AN, Stangl BL, Schwandt ML, Farinelli LA, Momenan R, Ramchandani VA, Leggio L. Exogenous ghrelin administration increases alcohol self-administration and modulates brain functional activity in heavy-drinking alcohol-dependent individuals. Mol Psychiatry. 2018;23(10):2029-2038.
  5. Leggio L, Zywiak WH, Fricchione SR, Edwards SM, de la Monte SM, Swift RM, Kenna GA. Intravenous ghrelin administration increases alcohol craving in alcohol-dependent heavy drinkers: a preliminary investigation. Biol Psychiatry. 2014;76(9):734-41.
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