Dietary geraniol ameliorates intestinal dysbiosis and relieves symptoms in irritable bowel syndrome patients.

Dietary geraniol ameliorates intestinal dysbiosis and relieves symptoms in irritable bowel syndrome patients.

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PMID: 

BMC Complement Altern Med. 2018 Dec 19 ;18(1):338. Epub 2018 Dec 19. PMID: 30567535

Abstract Title: 

Dietary geraniol ameliorates intestinal dysbiosis and relieves symptoms in irritable bowel syndrome patients: a pilot study.

Abstract: 

BACKGROUND: (Trans)-3,7-Dimethyl-2,6-octadien-1-ol, commonly called geraniol (Ge-OH), is an acyclic monoterpene alcohol with well-known anti-inflammatory and antimicrobial properties. Ge-OH is a non-toxic compound classified as Generally Recognized As Safe (GRAS) by the US Food and Drug Administration and the European Food Security Agency.
METHODS: Ge-OH was orally administered at a maximum daily dose of 8 mg kgbody weight for four weeks in a delayed release formulation capable of reaching the colon. Fecal microbiota and blood cytokines were analyzed before and after Ge-OH treatment, as well as IBS symptomatology by using Visual Analogue Scale (VAS-IBS).
RESULTS: The results show that orally administered Ge-OH is a powerful modulator of the intestinal microbial ecosystem, capable of leading to increased relative abundances of Collinsella and especially Faecalibacterium, a well-known health-promoting butyrate producer consistently found to be decreased in IBS patients. Moreover, Ge-OH strongly improved the clinical symptoms of colitis by significantly reducing the score recorded by the VAS-IBS questionnaire. Clinical improvement was associated with a significant reduction in the circulating MIP-1β, a chemokine found to be increased in several IBS patients.
CONCLUSION: Ge-OH could be a powerful component for food supplement targeted to the treatment of IBS patients.
TRIAL REGISTRATION: ISRCTN47041881 , retrospectively registered on 19th July 2018.

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