Effect of bee pollen on the gut microbiota of hyperlipidemic rats
Author of the article:LI Zhen;LIU Zhi-Yong;ZHANG Yong;ZENG Zhi-Jiang
Author's Workplace:Honeybee Research Institute, Jiangxi Agricultural University, Nanchang 330045, China; Jiangxi Province Key Laboratory of Honeybee Biology and Beekeeping, Nanchang 330045, China; Laboratory Animal Science and Technology Center, Jiangxi University of Traditional Chinese Medicine, Nanchang 330006, China
Key Words:bee pollen; rats; hyperlipidemia; gut microbiota
Abstract:
[Objectives] To investigate whether bee pollen regulates the gut flora of
hyperlipidemic rats (Rattus norvegicus). [Methods] Hyperlipidemic rats were given three
doses of bee pollen (80, 400 and 800 mg/kg) over 60 days, after which the
structure and diversity of their gut bacteria was determined using 16S rDNA
high-throughput sequencing. [Results] The alpha diversity index
(Shannon, Simpson) and richness index (Chao, Ace) indicate that the diversity
of the rats’ gut bacteria declined, and that this was not reversed by
bee-pollen gavage. The Firmicutes, Bacteroides and Verrucomicrobia accounted
for more than 95.8% of all bacteria found in all three treatment groups. The
abundance of Tenericutes in the high fat model group, and in the low and medium
dose bee pollen groups, decreased significantly (P < 0.05), compared to the control group. At the genus level,
the abundance of Bacteroides, Coprococcus and Paraprevotella decreased significantly in all three pollen- treatment
groups compared to the control group (P <
0.05). Bacteroides abundance in the
medium pollen-dose group increased significantly (P < 0.05) and the abundance of Akkermansia in all three pollen-treatment groups increased (P > 0.05) compared to the high-fat
model group. [Conclusion] The gut bacteria of hyperlipidemic rats
can be altered by bee pollen.