Format

Send to

Choose Destination
BMC Genomics. 2018 Nov 7;19(1):808. doi: 10.1186/s12864-018-5202-z.

Differential effects of coconut versus soy oil on gut microbiota composition and predicted metabolic function in adult mice.

Author information

1
Department for Sustainable Food Process (DiSTAS), Università Cattolica del Sacro Cuore, via E. Parmense 84, 29122, Piacenza, Italy. vania.patrone@unicatt.it.
2
Nutrigenomics and Proteomics Research Centre (PRONUTRIGEN), Università Cattolica del Sacro Cuore, via Emilia. Parmense 84, 29122, Piacenza, Italy. vania.patrone@unicatt.it.
3
Department of Animal Sciences, Food and Nutrition (DIANA), Università Cattolica del Sacro Cuore, via E. Parmense 84, 29122, Piacenza, Italy.
4
Nutrigenomics and Proteomics Research Centre (PRONUTRIGEN), Università Cattolica del Sacro Cuore, via Emilia. Parmense 84, 29122, Piacenza, Italy.
5
Milan Unit, Istituto di Ricerca Genetica e Biomedica, CNR, Milan, Italy.
6
Biotechnological Research Centre, Università Cattolica del Sacro Cuore, via Milano 24, 26100, Cremona, Italy.

Abstract

BACKGROUND:

Animal studies show that high fat (HF) diet-induced gut microbiota contributes to the development of obesity. Oil composition of high-fat diet affects metabolic inflammation differently with deleterious effects by saturated fat. The aim of the present study was to examine the diversity and metabolic capacity of the cecal bacterial community in C57BL/6 N mice administered two different diets, enriched respectively with coconut oil (HFC, high in saturated fat) or soy oil (HFS, high in polyunsaturated fat). The relative impact of each hypercaloric diet was evaluated after 2 and 8 weeks of feeding, and compared with that of a low-fat, control diet (LF).

RESULTS:

The HFC diet induced the same body weight gain and fat storage as the HFS diet, but produced higher plasma cholesterol levels after 8 weeks of treatment. At the same time point, the cecal microbiota of HFC diet-fed mice was characterized by an increased relative abundance of Allobaculum, Anaerofustis, F16, Lactobacillus reuteri and Deltaproteobacteria, and a decreased relative abundance of Akkermansia muciniphila compared to HFS mice. Comparison of cecal microbiota of high-fat fed mice versus control mice indicated major changes that were shared between the HFC and the HFS diet, including the increase in Lactobacillus plantarum, Lutispora, and Syntrophomonas, while some other shifts were specifically associated to either coconut or soy oil. Prediction of bacterial gene functions showed that the cecal microbiota of HFC mice was depleted of pathways involved in fatty acid metabolism, amino acid metabolism, xenobiotic degradation and metabolism of terpenoids and polyketides compared to mice on HFS diet. Correlation analysis revealed remarkable relationships between compositional changes in the cecal microbiota and alterations in the metabolic and transcriptomic phenotypes of high-fat fed mice.

CONCLUSIONS:

The study highlights significant differences in cecal microbiota composition and predictive functions of mice consuming a diet enriched in coconut vs soy oil. The correlations established between specific bacterial taxa and various traits linked to host lipid metabolism and energy storage give insights into the role and functioning of the gut microbiota that may contribute to diet-induced metabolic disorders.

KEYWORDS:

16S rDNA; Adipose tissue; High-fat diet; Illumina sequencing; Microbiota; Mouse; Obesity; Real-time PCR

PMID:
30404613
PMCID:
PMC6223047
DOI:
10.1186/s12864-018-5202-z
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for BioMed Central Icon for PubMed Central
Loading ...
Support Center