Effect of the dietary polyacetylenes falcarinol and falcarindiol on the gut microbiota composition in a rat model of colorectal cancer

• Published in: BMC research notes 2018-06, Vol.11 (1), p.411-411, Article 411
• Main Authors: Kobaek-Larsen, Morten, Nielsen, Dennis Sandris, Kot, Witold, Krych, Łukasz, Christensen, Lars Porskjær, Baatrup, Gunnar
• Format: Article
• Language: English
• Subjects: Animal models; Animals; Azo compounds; Azoxymethane; Carrots; Chromatography; Colorectal cancer; Colorectal carcinoma; Colorectal Neoplasms - drug therapy; Colorectal Neoplasms - microbiology; Denmark; Diet; Diynes - pharmacology; Falcarindiol; Falcarinol; Fatty Alcohols - pharmacology; Food; Gastrointestinal Microbiome - drug effects; Gene expression; Genetic aspects; Growth rate; Health aspects; Intestinal microflora; Male; Mass spectrometry; Metabolism; Methods; Microbiota; Microbiota (Symbiotic organisms); Neoplasia; Polyacetylene; Polyacetylenes; Polyps; Polyynes; Rat model; Rats; Rats as laboratory animals; Rats, Inbred F344; Research Note; RNA, Ribosomal, 16S; Rodents; rRNA 16S; Scientific imaging
• ISSN: 1756-0500; 1756-0500
• DOI: 10.1186/s13104-018-3527-y

(3R)-Falcarinol (FaOH) and (3R,8S)-falcarindiol (FaDOH) have previously been shown to reduce the number of neoplastic lesions and the growth rate of polyps in the colon of azoxymethane (AOM) treated rats. Based on previous investigations, it appears that different mechanisms of actions are involved in the antineoplastic effect of FaOH and FaDOH. One mechanism of action may be related to the antibacterial effect of FaOH and FaDOH and thus their effect on the gut microbiota. This study aimed to determine the effect of FaOH and FaDOH on gut microbiota composition of AOM treated rats. Azoxymethane treated rats were fed either a standard rat diet or a rat diet supplemented with FaOH and FaDOH. The gut microbiota of AOM-induced rats was determined by 16S rRNA gene-amplicon sequencing. Analysis of fecal cecum samples demonstrated a significant gut microbiota change in rats receiving standard rat diet supplemented with FaOH and FaDOH compared with the control group that only received the rat diet. Comparison of the gut microbiota of rats who developed large neoplasms in the colon with rats without large neoplasms showed that the gut microbiota was significantly different in rats who developed large colon neoplasms compared to rats with no macroscopic colon neoplasms.