T
he effects of
Kiwifruit
(
Actinidia chinensis
Planch)
seed oil
(KSO) on obesity and its potential mechanism were investigated in high-fat diet (HFD)-induced
mice
. The study found that
KSO supplementation dramatically decreased the
Firmicutes
-to-
Bacteroidetes
ratio, suggesting that that long-term supplementation of KSO ameliorates obesity by reducing inflammation, adipose thermogenesis and
gut microbiota
dysbiosis.
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March 2019
Food and Chemical Toxicology
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Obesity is considered as a chronic disease which seriously affecting people's health and daily life.
Kiwifruit
(
Actinidia chinensis
Planch)
seed oil
(KSO), as a by-product of kiwifruit processing, is rich in
fatty acids
. Conventional wisdom holds that KSO has many health benefits, but there is no scientific basis. Here, the relieving effects of KSO on obesity and its potential mechanism were investigated in high-fat diet (HFD)-induced
C57BL/6 mice
. Mice were divided into four groups: ND (normal diet); HFD; L-KSO and H-KSO (HFD supplemented with 1.0 and 3.0 mL/kg·bw of KSO per day, respectively). Results showed that continuous supplementation KSO for 12 weeks significantly decreased bodyweight, inguinal fat tissue weight, blood glucose, and HOMA-IR index and ameliorated serum lipids accumulation (TC, TG, HDL-C, and LDL-C). Relative
mRNA
expression of inflammatory cytokines (TNF-α, IL-6, IL-1β, COX-2, and iNOS) was down-regulated and expression of thermogenesis-related genes (PPAR-γ,
UCP1
, PGC1-α, and PRDM16) was up-regulated in the inguinal fat tissue of KSO treated mice. Principal component analysis showed that the
microbial community
compositions of four groups were different. KSO supplementation dramatically decreased the
Firmicutes
-to-
Bacteroidetes
ratio. Together, our findings demonstrated that long-term supplementation KSO ameliorates obesity by reducing inflammation, adipose thermogenesis and
gut microbiota
dysbiosis
.
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