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Han S, Wu X, Zhu L, Lu H, Ling X, Luo Y, Hu Z, Zhou Y, Tang Y, Luo F. Whole grain germinated brown rice intake modulates the gut microbiota and alleviates hypertriglyceridemia and hypercholesterolemia in high fat diet-fed mice. Food Funct 2024; 15:265-283. [PMID: 38059679 DOI: 10.1039/d3fo03288d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Hyperlipidemia is a common clinical disorder of lipid metabolism in modern society and is considered to be one of the major risk factors leading to cardiovascular-related diseases. Germinated brown rice (GBR) is a typical whole grain food. The lipid-lowering effect of GBR has received increasing attention, but its mechanism of action is not fully understood. The gut microbiota has been proposed as a novel target for the treatment of hyperlipidemia. The aim of this study was to investigate the effects of GBR on the gut microbiota and lipid metabolism in high-fat diet (HFD)-fed C57BL/6J mice. The effect of GBR on hyperlipidemia was evaluated by measuring blood lipid levels and by pathological examination. The gut microbiota was detected by 16S rRNA sequencing, and the protein and mRNA expression levels involved in cholesterol metabolism were detected by western blotting and RT-qPCR to find potential correlations. The results showed that GBR supplementation could effectively reduce the levels of TC, TG, LDL-C and HDL-C in the serum and alleviate the excessive accumulation of fat droplets caused by HFD. Moreover, GBR intervention improved HFD-fed gut microbiota disorder via increasing the diversity of the gut microbiota, reducing the Firmicutes/Bacteroidetes ratio, and improving gut barrier damage. In addition, GBR could inhibit endogenous cholesterol synthesis and promote cholesterol transport and excretion. These findings suggest that GBR may be a competitive candidate for the development of functional foods to prevent abnormal lipid metabolism.
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Affiliation(s)
- Shuai Han
- Laboratory of Molecular Nutrition, College of Food Science and Engineering, Central South University of Forestry and Technology, 498 Southern Shaoshan Road, Changsha, Hunan 410004, P. R. China.
| | - Xiuxiu Wu
- Laboratory of Molecular Nutrition, College of Food Science and Engineering, Central South University of Forestry and Technology, 498 Southern Shaoshan Road, Changsha, Hunan 410004, P. R. China.
| | - Lingfeng Zhu
- Laboratory of Molecular Nutrition, College of Food Science and Engineering, Central South University of Forestry and Technology, 498 Southern Shaoshan Road, Changsha, Hunan 410004, P. R. China.
| | - Han Lu
- Laboratory of Molecular Nutrition, College of Food Science and Engineering, Central South University of Forestry and Technology, 498 Southern Shaoshan Road, Changsha, Hunan 410004, P. R. China.
| | - Xuke Ling
- Laboratory of Molecular Nutrition, College of Food Science and Engineering, Central South University of Forestry and Technology, 498 Southern Shaoshan Road, Changsha, Hunan 410004, P. R. China.
| | - Yi Luo
- Department of Clinic Medicine, Xiangya School of Medicine, Central South University, Changsha, Hunan, 410008, China
| | - Zuomin Hu
- Laboratory of Molecular Nutrition, College of Food Science and Engineering, Central South University of Forestry and Technology, 498 Southern Shaoshan Road, Changsha, Hunan 410004, P. R. China.
| | - Yaping Zhou
- Laboratory of Molecular Nutrition, College of Food Science and Engineering, Central South University of Forestry and Technology, 498 Southern Shaoshan Road, Changsha, Hunan 410004, P. R. China.
| | - Yiping Tang
- National Engineering Research Center of Rice and Byproduct Deep Processing, 498 South Shaoshan Road, Changsha, Hunan 410004, P. R. China
| | - Feijun Luo
- Laboratory of Molecular Nutrition, College of Food Science and Engineering, Central South University of Forestry and Technology, 498 Southern Shaoshan Road, Changsha, Hunan 410004, P. R. China.
- National Engineering Research Center of Rice and Byproduct Deep Processing, 498 South Shaoshan Road, Changsha, Hunan 410004, P. R. China
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Wu T, Yu Q, Luo Y, Dai Z, Zhang Y, Wang C, Shen Q, Xue Y. Whole-Grain Highland Barley Attenuates Atherosclerosis Associated with NLRP3 Inflammasome Pathway and Gut Microbiota in ApoE -/- Mice. Nutrients 2023; 15:4186. [PMID: 37836470 PMCID: PMC10574078 DOI: 10.3390/nu15194186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 09/23/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023] Open
Abstract
The efficacy and mechanism of highland barley in the treatment of atherosclerosis have received little attention. Herein, we aimed to explore whether highland barley supplementation can prevent atherosclerosis progression and improve gut microbiota disorder in apolipoprotein E knockout (ApoE-/-) mice. Male ApoE-/- mice were fed a high-fat diet with whole-grain highland barley (WHB) or refined highland barley for 18 weeks. WHB substantially inhibited the formation of atherosclerotic plaques, reduced serum tumor necrosis factor-α, and downregulated the expression of NLRP3 in the aorta. Furthermore, the 16S rRNA analysis revealed that highland barley supplementation helped to restore the dysregulation of the gut microbiota, as evidenced by an increase in the relative abundance of specific beneficial bacteria known for their anti-inflammatory properties, such as Lachnospiraceae, Lactobacillus, Muribaculaceae, and Bifidobacterium. Highland barley supplementation might alleviate atherosclerotic plaque formation by modulating the NLRP3 inflammasome pathway and the synthesis of anti-inflammatory metabolites by the gut microbiota.
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Affiliation(s)
- Tong Wu
- National Engineering and Technology Research Center for Fruits and Vegetables, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (T.W.); (Q.Y.); (Y.L.); (Z.D.); (C.W.)
- National Center of Technology Innovation (Deep Processing of Highland Barley) in Food Industry, Beijing 100083, China
| | - Qinye Yu
- National Engineering and Technology Research Center for Fruits and Vegetables, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (T.W.); (Q.Y.); (Y.L.); (Z.D.); (C.W.)
| | - Yingting Luo
- National Engineering and Technology Research Center for Fruits and Vegetables, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (T.W.); (Q.Y.); (Y.L.); (Z.D.); (C.W.)
| | - Zijian Dai
- National Engineering and Technology Research Center for Fruits and Vegetables, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (T.W.); (Q.Y.); (Y.L.); (Z.D.); (C.W.)
| | - Yuhong Zhang
- Tibet Academy of Agriculture and Animal Husbandry Sciences, Lhasa 860000, China;
| | - Chao Wang
- National Engineering and Technology Research Center for Fruits and Vegetables, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (T.W.); (Q.Y.); (Y.L.); (Z.D.); (C.W.)
| | - Qun Shen
- National Engineering and Technology Research Center for Fruits and Vegetables, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (T.W.); (Q.Y.); (Y.L.); (Z.D.); (C.W.)
- National Center of Technology Innovation (Deep Processing of Highland Barley) in Food Industry, Beijing 100083, China
| | - Yong Xue
- National Engineering and Technology Research Center for Fruits and Vegetables, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (T.W.); (Q.Y.); (Y.L.); (Z.D.); (C.W.)
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Huang Y, Wang Z, Ye B, Ma JH, Ji S, Sheng W, Ye S, Ou Y, Peng Y, Yang X, Chen J, Tang S. Sodium butyrate ameliorates diabetic retinopathy in mice via the regulation of gut microbiota and related short-chain fatty acids. J Transl Med 2023; 21:451. [PMID: 37420234 PMCID: PMC10329333 DOI: 10.1186/s12967-023-04259-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 06/09/2023] [Indexed: 07/09/2023] Open
Abstract
BACKGROUND Diabetic retinopathy (DR) development is associated with disturbances in the gut microbiota and related metabolites. Butyric acid is one of the short-chain fatty acids (SCFAs), which has been found to possess a potential antidiabetic effect. However, whether butyrate has a role in DR remains elusive. This study aimed to investigate the effect and mechanism of sodium butyrate supplementation on DR. METHODS C57BL/6J mice were divided into three groups: Control group, diabetic group, and diabetic with butyrate supplementation group. Type 1 diabetic mouse model was induced by streptozotocin. Sodium butyrate was administered by gavage to the experimental group daily for 12 weeks. Optic coherence tomography, hematoxylin-eosin, and immunostaining of whole-mount retina were used to value the changes in retinal structure. Electroretinography was performed to assess the retinal visual function. The tight junction proteins in intestinal tissue were evaluated using immunohistochemistry. 16S rRNA sequencing and LC-MS/MS were performed to determine the alteration and correlation of the gut microbiota and systemic SCFAs. RESULTS Butyrate decreased blood glucose, food, and water consumption. Meanwhile, it alleviated retinal thinning and activated microglial cells but improved electroretinography visual function. Additionally, butyrate effectively enhanced the expression of ZO-1 and Occludin proteins in the small intestine. Crucially, only butyric acid, 4-methylvaleric acid, and caproic acid were significantly decreased in the plasma of diabetic mice and improved after butyrate supplementation. The deeper correlation analysis revealed nine genera strongly positively or negatively correlated with the above three SCFAs. Of note, all three positively correlated genera, including norank_f_Muribaculaceae, Ileibacterium, and Dubosiella, were significantly decreased in the diabetic mice with or without butyrate treatment. Interestingly, among the six negatively correlated genera, Escherichia-Shigella and Enterococcus were increased, while Lactobacillus, Bifidobacterium, Lachnospiraceae_NK4A136_group, and unclassified_f_Lachnospiraceae were decreased after butyrate supplementation. CONCLUSION Together, these findings demonstrate the microbiota regulating and diabetic therapeutic effects of butyrate, which can be used as a potential food supplement alternative to DR medicine.
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Affiliation(s)
- Yinhua Huang
- Aier School of Ophthalmology, Central South University, Changsha, China
- Aier Eye Institute, Changsha, China
| | - Zhijie Wang
- State Key Laboratory of Ophthalmology, Optometry and Visual Science, Eye Hospital, Wenzhou Medical University, Wenzhou, China
- National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Bo Ye
- Department of Ophthalmology, Nanchang Aier Eye Hospital, Nanchang, China
| | | | | | - Wang Sheng
- Department of Ophthalmology, Changsha Xiangjiang Aier Eye Hospital, Changsha, China
| | - Suna Ye
- Aier Eye Institute, Changsha, China
| | - Yiwen Ou
- Aier School of Ophthalmology, Central South University, Changsha, China
- Aier Eye Institute, Changsha, China
| | | | - Xu Yang
- Aier Eye Institute, Changsha, China
| | - Jiansu Chen
- Aier School of Ophthalmology, Central South University, Changsha, China.
- Aier Eye Institute, Changsha, China.
- Key Laboratory for Regenerative Medicine, Ministry of Education, Jinan University, Guangzhou, China.
| | - Shibo Tang
- Aier School of Ophthalmology, Central South University, Changsha, China.
- Aier Eye Institute, Changsha, China.
- Changsha Aier Eye Hospital, Aier Eye Hospital Group, Hunan, China.
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