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Yin Y, Gong S, Han M, Wang J, Shi H, Jiang X, Guo L, Duan Y, Guo Q, Chen Q, Li F. Leucine regulates lipid metabolism in adipose tissue through adipokine-mTOR-SIRT1 signaling pathway and bile acid-microbe axis in a finishing pig model. ANIMAL NUTRITION (ZHONGGUO XU MU SHOU YI XUE HUI) 2024; 16:158-173. [PMID: 38357569 PMCID: PMC10864217 DOI: 10.1016/j.aninu.2023.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 10/07/2023] [Accepted: 10/12/2023] [Indexed: 02/16/2024]
Abstract
This study was conducted to explore the regulatory mechanism of leucine (Leu) on lipid metabolism of finishing pigs. Twenty-four Duroc × Landrace × Large cross pigs with an average body weight of 68.33 ± 0.97 kg were randomly allocated into 3 treatment groups with 8 replicates per group (1 pig per replicate). The dietary treatments were as follows: control group (CON), 0.25% Leu group and 0.50% Leu group. The experimental period was 42 d. The results showed as follows. (1) Compared with the CON, 0.25% and 0.50% Leu increased (P < 0.01) the average daily gain (ADG), while the average backfat thickness (ABT) and the ratio of feed intake to body weight gain (F:G ratio) were decreased (P < 0.05). (2) In the 0.25% Leu group, the relative mRNA expression levels of sterol regulatory element binding protein-1c (SREBP1c), recombinant fatty acid transport protein 1 (FATP1), chemerin and peroxisome proliferator-activated receptor γ (PPARγ) were decreased but the level of fatty acid binding protein 4 (FABP4) and fatty acid translocase (FAT/CD36) were increased in backfat tissue. In the 0.25% Leu group, the protein levels of p-Rictor, p-Raptor, p-eIF4E-binding protein 1 (p-4EBP1), p-silent mating type information regulator 2 homolog 1 (p-SIRT1) and acetylation ribosome s6 protein kinase 1 (Ac-S6K1) were increased (P < 0.05). (3) Compared to the CON, the diversity of gut microbiota in the 0.25% Leu group was increased. Principal component analysis showed that the relative abundance of Bacteroidetes, Lactobacillus and Desulfovibrio was higher in the 0.25% Leu group than the CON, but the relative abundance of Firmicutes, Treponema and Shigella was lower than in the CON (P < 0.05). (4) Four different metabolites were screened out from the serum of finishing pigs including allolithocholic acid (alloLCA), isolithocholic acid (isoLCA), ursodeoxycholic acid (UDCA) and hyodeoxycholic acid (HDCA), which correlate to various degrees with the above microorganisms. In conclusion, Leu could promote adipose tissue lipolysis of finishing pigs through the mTOR-SIRT1 signaling pathway, and S6K1 is acetylated at the same time, and the interaction between gut microbiota and bile acid metabolism is also involved.
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Affiliation(s)
- Yunju Yin
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha 410125, China
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Saiming Gong
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha 410125, China
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Mengmeng Han
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha 410125, China
- College of Modern Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jingzun Wang
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730124, China
| | - Hanjing Shi
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha 410125, China
- College of Life Sciences, Hunan Normal University, Changsha 410128, China
| | - Xianji Jiang
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha 410125, China
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Liu Guo
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha 410125, China
- College of Modern Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yehui Duan
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha 410125, China
| | - Qiuping Guo
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha 410125, China
| | - Qinghua Chen
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Fengna Li
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha 410125, China
- College of Modern Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
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Yin Q, Yu J, Li J, Zhang T, Wang T, Zhu Y, Zhang J, Yao J. Enhancing milk quality and modulating rectal microbiota of dairy goats in starch-rich diet: the role of bile acid supplementation. J Anim Sci Biotechnol 2024; 15:7. [PMID: 38247003 PMCID: PMC10801996 DOI: 10.1186/s40104-023-00957-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 10/29/2023] [Indexed: 01/23/2024] Open
Abstract
BACKGROUND Diets rich in starch have been shown to increase a risk of reducing milk fat content in dairy goats. While bile acids (BAs) have been used as a lipid emulsifier in monogastric and aquatic animals, their effect on ruminants is not well understood. This study aimed to investigate the impact of BAs supplementation on various aspects of dairy goat physiology, including milk composition, rumen fermentation, gut microbiota, and BA metabolism. RESULTS We randomly divided eighteen healthy primiparity lactating dairy goats (days in milk = 100 ± 6 d) into two groups and supplemented them with 0 or 4 g/d of BAs undergoing 5 weeks of feeding on a starch-rich diet. The results showed that BAs supplementation positively influenced milk yield and improved the quality of fatty acids in goat milk. BAs supplementation led to a reduction in saturated fatty acids (C16:0) and an increase in monounsaturated fatty acids (cis-9 C18:1), resulting in a healthier milk fatty acid profile. We observed a significant increase in plasma total bile acid concentration while the proportion of rumen short-chain fatty acids was not affected. Furthermore, BAs supplementation induced significant changes in the composition of the gut microbiota, favoring the enrichment of specific bacterial groups and altering the balance of microbial populations. Correlation analysis revealed associations between specific bacterial groups (Bacillus and Christensenellaceae R-7 group) and BA types, suggesting a role for the gut microbiota in BA metabolism. Functional prediction analysis revealed notable changes in pathways associated with lipid metabolism, suggesting that BAs supplementation has the potential to modulate lipid-related processes. CONCLUSION These findings highlight the potential benefits of BAs supplementation in enhancing milk production, improving milk quality, and influencing metabolic pathways in dairy goats. Further research is warranted to elucidate the underlying mechanisms and explore the broader implications of these findings.
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Affiliation(s)
- Qingyan Yin
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, P.R. China
- Key Laboratory of Livestock Biology, Northwest A&F University, Yangling, 712100, Shaanxi, P.R. China
| | - Junjian Yu
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, P.R. China
- Key Laboratory of Livestock Biology, Northwest A&F University, Yangling, 712100, Shaanxi, P.R. China
| | - Jiaxiao Li
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, P.R. China
- Key Laboratory of Livestock Biology, Northwest A&F University, Yangling, 712100, Shaanxi, P.R. China
| | - Tianci Zhang
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, P.R. China
- Key Laboratory of Livestock Biology, Northwest A&F University, Yangling, 712100, Shaanxi, P.R. China
| | - Tianyu Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, P.R. China
- Key Laboratory of Livestock Biology, Northwest A&F University, Yangling, 712100, Shaanxi, P.R. China
| | - Yufei Zhu
- DAYU Bioengineering (Xi'an) Industrial Development Research Institute, Xi'an, 710000, Shaanxi, P.R. China
| | - Jun Zhang
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, P.R. China.
- Key Laboratory of Livestock Biology, Northwest A&F University, Yangling, 712100, Shaanxi, P.R. China.
| | - Junhu Yao
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, P.R. China.
- Key Laboratory of Livestock Biology, Northwest A&F University, Yangling, 712100, Shaanxi, P.R. China.
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Duddeck KA, Petersen TE, Adkins HJ, Smith AH, Hernandez S, Wenner SJ, Yao D, Chen C, Li W, Fregulia P, Larsen A, Jang YD. Dose-Dependent Effects of Supplementing a Two-Strain Bacillus subtilis Probiotic on Growth Performance, Blood Parameters, Fecal Metabolites, and Microbiome in Nursery Pigs. Animals (Basel) 2023; 14:109. [PMID: 38200840 PMCID: PMC10777967 DOI: 10.3390/ani14010109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/07/2023] [Accepted: 12/15/2023] [Indexed: 01/12/2024] Open
Abstract
This experiment was conducted to evaluate the effects of dietary supplementation level of a two-strain Bacillus subtilis probiotic on growth performance, blood parameters, fecal metabolites, and microbiome in nursery pigs. A total of 54 weaned piglets were allotted to three treatments in three replicate pens with six pigs/pen for a 28 d feeding trial. The treatments were as follows: control: no probiotic supplementation; Pro1x: B. subtilis supplementation at 1.875 × 105 CFU/g diet; and Pro10x: B. subtilis supplementation at 1.875 × 106 CFU/g diet. Body weight at d 14 postweaning (p = 0.06) and average daily gain for d 0 to 14 postweaning (p < 0.05) were greater in the Pro1x treatment than in the other treatments. Blood glucose levels were greater in both probiotic treatments than in the control treatment at d 14 postweaning (p < 0.05). In the fecal short-chain fatty acid (SCFA) concentrations, the butyrate concentrations were greater in the Pro1x treatment than in the other treatments (p < 0.05), and the acetate, propionate, and total SCFA concentrations were greater in the Pro1x treatment than in the Pro10x treatment (p < 0.05). The beta diversity of fecal microbiome composition at d 14 postweaning based on Unweighted Unifrac analysis was dissimilar between the Pro1x and Pro10x treatments (p < 0.05). In conclusion, dietary B. subtilis supplementation of two strains selected to reduce effects of pathogenic Escherichia coli to nursery diets at 1.875 × 105 CFU/g diet improved the growth rate in the early postweaning period, increased fecal SCFA concentrations and altered the fecal microbial community composition. A higher dose of B. subtilis did not improve the performance parameters over those of the control piglets.
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Affiliation(s)
- Karyn A. Duddeck
- Department of Animal and Food Science, University of Wisconsin-River Falls, River Falls, WI 54022, USA
| | - Tiffany E. Petersen
- Department of Animal and Food Science, University of Wisconsin-River Falls, River Falls, WI 54022, USA
| | - Haley J. Adkins
- Department of Animal and Food Science, University of Wisconsin-River Falls, River Falls, WI 54022, USA
| | - Alexandra H. Smith
- The ScienceHearted Center, Arm & Hammer Animal and Food Production, Waukesha, WI 53186, USA
| | - Samantha Hernandez
- The ScienceHearted Center, Arm & Hammer Animal and Food Production, Waukesha, WI 53186, USA
| | - Seth J. Wenner
- The ScienceHearted Center, Arm & Hammer Animal and Food Production, Waukesha, WI 53186, USA
| | - Dan Yao
- Department of Animal Science, University of Minnesota, St. Paul, MN 55108, USA
| | - Chi Chen
- Department of Animal Science, University of Minnesota, St. Paul, MN 55108, USA
| | - Wenli Li
- United States Department of Agriculture-Agricultural Research Service, US Dairy Forage Research Center, Madison, WI 53706, USA
| | - Priscila Fregulia
- United States Department of Agriculture-Agricultural Research Service, US Dairy Forage Research Center, Madison, WI 53706, USA
- Oak Ridge Institute for Science and Education, Oak Ridge, TN 37830, USA
| | - Anna Larsen
- United States Department of Agriculture-Agricultural Research Service, US Dairy Forage Research Center, Madison, WI 53706, USA
- Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Young Dal Jang
- Department of Animal and Food Science, University of Wisconsin-River Falls, River Falls, WI 54022, USA
- Department of Animal and Dairy Science, University of Georgia, Athens, GA 30602, USA
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Shen S, Huang D, Qian S, Ye X, Zhuang Q, Wan X, Dong Z. Hyodeoxycholic acid attenuates cholesterol gallstone formation via modulation of bile acid metabolism and gut microbiota. Eur J Pharmacol 2023; 955:175891. [PMID: 37429516 DOI: 10.1016/j.ejphar.2023.175891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 06/15/2023] [Accepted: 06/28/2023] [Indexed: 07/12/2023]
Abstract
BACKGROUND & AIMS Hyodeoxycholic acid (HDCA), a hydrophilic bile acid (BA), may prevent and suppress the formation of cholesterol gallstones (CGs). However, the mechanism by which HDCA prevents CGs formation remains unclear. This study aimed to investigate the underlying mechanism of HDCA in preventing CG formation. METHODS C57BL/6J mice were fed either a lithogenic diet (LD), a chow diet, or LD combined with HDCA. The concentration of BAs in the liver and ileum were determined using liquid chromatography-mass spectrometry (LC-MS/MS). Genes involved in cholesterol and BAs metabolism were detected using polymerase chain reaction (PCR). The gut microbiota in the faeces was determined using 16S rRNA. RESULTS HDCA supplementation effectively prevented LD-induced CG formation. HDCA increased the gene expression of BA synthesis enzymes, including Cyp7a1, Cyp7b1, and Cyp8b1, and decreased the expression of the cholesterol transporter Abcg5/g8 gene in the liver. HDCA inhibited LD-induced Nuclear farnesoid X receptor (Fxr) activation and reduced the gene expression of Fgf15 and Shp in the ileum. These data indicate that HDCA could prevent CGs formation partly by promoting BA synthesis in the liver and reduced the cholesterol efflux. In addition, HDCA administration reversed the LD-induced decrease in the abundance of norank_f_Muribaculaceae, which was inversely proportional to cholesterol levels. CONCLUSIONS HDCA attenuated CG formation by modulating BA synthesis and gut microbiota. This study provides new insights into the mechanism by which HDCA prevents CG formation. LAY SUMMARY In this study, we found that HDCA supplementation suppressed LD-induced CGs in mice by inhibiting Fxr in the ileum, enhancing BA synthesis, and increasing the abundance of norank_f_Muribaculaceae in the gut microbiota. HDCA can also downregulate the level of total cholesterol in the serum, liver, and bile.
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Affiliation(s)
- Shuang Shen
- Digestive Endoscopic Center, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Central Lab, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Dan Huang
- Digestive Endoscopic Center, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shengnan Qian
- Central Lab, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xin Ye
- Digestive Endoscopic Center, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qian Zhuang
- Digestive Endoscopic Center, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xinjian Wan
- Digestive Endoscopic Center, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Zhixia Dong
- Digestive Endoscopic Center, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Zhong J, He X, Gao X, Liu Q, Zhao Y, Hong Y, Zhu W, Yan J, Li Y, Li Y, Zheng N, Bao Y, Wang H, Ma J, Huang W, Liu Z, Lyu Y, Ke X, Jia W, Xie C, Hu Y, Sheng L, Li H. Hyodeoxycholic acid ameliorates nonalcoholic fatty liver disease by inhibiting RAN-mediated PPARα nucleus-cytoplasm shuttling. Nat Commun 2023; 14:5451. [PMID: 37673856 PMCID: PMC10482907 DOI: 10.1038/s41467-023-41061-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 08/22/2023] [Indexed: 09/08/2023] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is usually characterized with disrupted bile acid (BA) homeostasis. However, the exact role of certain BA in NAFLD is poorly understood. Here we show levels of serum hyodeoxycholic acid (HDCA) decrease in both NAFLD patients and mice, as well as in liver and intestinal contents of NAFLD mice compared to their healthy counterparts. Serum HDCA is also inversely correlated with NAFLD severity. Dietary HDCA supplementation ameliorates diet-induced NAFLD in male wild type mice by activating fatty acid oxidation in hepatic peroxisome proliferator-activated receptor α (PPARα)-dependent way because the anti-NAFLD effect of HDCA is abolished in hepatocyte-specific Pparα knockout mice. Mechanistically, HDCA facilitates nuclear localization of PPARα by directly interacting with RAN protein. This interaction disrupts the formation of RAN/CRM1/PPARα nucleus-cytoplasm shuttling heterotrimer. Our results demonstrate the therapeutic potential of HDCA for NAFLD and provide new insights of BAs on regulating fatty acid metabolism.
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Affiliation(s)
- Jing Zhong
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
- Huzhou Key Laboratory of Precision Medicine Research and Translation for Infectious Diseases, Affiliated Huzhou Hospital, Zhejiang University School of Medicine, Huzhou, 313000, China
| | - Xiaofang He
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Xinxin Gao
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Qiaohong Liu
- Key Laboratory of Liver and Kidney Diseases (Ministry of Education), Institute of Liver Diseases, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Yu Zhao
- Key Laboratory of Liver and Kidney Diseases (Ministry of Education), Institute of Liver Diseases, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Ying Hong
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Weize Zhu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Juan Yan
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Yifan Li
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Yan Li
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Ningning Zheng
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Yiyang Bao
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Hao Wang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Junli Ma
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Wenjin Huang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Zekun Liu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Yuanzhi Lyu
- Department of Dermatology, School of Medicine, University of California, Davis, Sacramento, CA, USA
| | - Xisong Ke
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Wei Jia
- Center for Translational Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong, 999077, China
| | - Cen Xie
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China.
| | - Yiyang Hu
- Key Laboratory of Liver and Kidney Diseases (Ministry of Education), Institute of Liver Diseases, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
| | - Lili Sheng
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
| | - Houkai Li
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
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Li J, Chen Y, Li R, Zhang X, Chen T, Mei F, Liu R, Chen M, Ge Y, Hu H, Wei R, Chen Z, Fan H, Zeng Z, Deng Y, Luo H, Hu S, Cai S, Wu F, Shi N, Wang Z, Zeng Y, Xie M, Jiang Y, Chen Z, Jia W, Chen P. Gut microbial metabolite hyodeoxycholic acid targets the TLR4/MD2 complex to attenuate inflammation and protect against sepsis. Mol Ther 2023; 31:1017-1032. [PMID: 36698311 PMCID: PMC10124078 DOI: 10.1016/j.ymthe.2023.01.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 12/08/2022] [Accepted: 01/19/2023] [Indexed: 01/26/2023] Open
Abstract
Sepsis, a critical condition resulting from the systemic inflammatory response to a severe microbial infection, represents a global public health challenge. However, effective treatment or intervention to prevent and combat sepsis is still lacking. Here, we report that hyodeoxycholic acid (HDCA) has excellent anti-inflammatory properties in sepsis. We discovered that the plasma concentration of HDCA was remarkably lower in patients with sepsis and negatively correlated with the severity of the disease. Similar changes in HDCA levels in plasma and cecal content samples were observed in a mouse model of sepsis, and these changes were associated with a reduced abundance of HDCA-producing strains. Interestingly, HDCA administration significantly decreased systemic inflammatory responses, prevented organ injury, and prolonged the survival of septic mice. We demonstrated that HDCA suppressed excessive activation of inflammatory macrophages by competitively blocking lipopolysaccharide binding to the Toll-like receptor 4 (TLR4) and myeloid differentiation factor 2 receptor complex, a unique mechanism that characterizes HDCA as an endogenous inhibitor of inflammatory signaling. Additionally, we verified these findings in TLR4 knockout mice. Our study highlights the potential value of HDCA as a therapeutic molecule for sepsis.
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Affiliation(s)
- Jiaxin Li
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China; Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Yuqi Chen
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Rui Li
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Xianglong Zhang
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Tao Chen
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Fengyi Mei
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Ruofan Liu
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Meiling Chen
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Yue Ge
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Hongbin Hu
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Rongjuan Wei
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Zhenfeng Chen
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Hongying Fan
- Department of Microbiology, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, China
| | - Zhenhua Zeng
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Yongqiang Deng
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Haihua Luo
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Shuiwang Hu
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Shumin Cai
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Feng Wu
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Nengxian Shi
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Zhang Wang
- Institute of Ecological Sciences, School of Life Sciences, South China Normal University, Guangzhou 510515, China
| | - Yunong Zeng
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Ming Xie
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Yong Jiang
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Zhongqing Chen
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
| | - Wei Jia
- Center for Translational Medicine and Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China; School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong 999077, China.
| | - Peng Chen
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China; Microbiome Medicine Center, Zhujiang Hospital, Southern Medical University, Guangzhou 510515, China.
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Pi Y, Zhang X, Wu Y, Wang Z, Bai Y, Liu X, Han D, Zhao J, Tobin I, Zhao J, Zhang G, Wang J. Alginate Alleviates Dextran Sulfate Sodium-Induced Colitis by Promoting Bifidobacterium animalis and Intestinal Hyodeoxycholic Acid Synthesis in Mice. Microbiol Spectr 2022; 10:e0297922. [PMID: 36219101 PMCID: PMC9769733 DOI: 10.1128/spectrum.02979-22] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 09/16/2022] [Indexed: 01/09/2023] Open
Abstract
Alginate (ALG) is known to alleviate intestinal inflammation in inflammatory bowel disease, but its mechanism of action remains elusive. In the present study, we studied the involvement of the intestinal microbiota and bile acid (BA) metabolism in ALG-mediated anti-inflammatory effects in mice. A combination of 16S rRNA gene amplicon sequencing, shotgun metagenomic sequencing, and targeted BA metabolomic profiling was employed to investigate structural and functional differences in the colonic microbiota and BA metabolism in dextran sulfate sodium (DSS)-treated mice with or without dietary supplementation of ALG. We further explored the role of the intestinal microbiota as well as a selected ALG-enriched bacterium and BA in DSS-induced colitis. Dietary ALG alleviated DSS-mediated intestinal inflammation and enriched a small set of bacteria including Bifidobacterium animalis in the colon (P < 0.05). Additionally, ALG restored several bacteria carrying secondary BA-synthesizing enzymes such as 7α-hydroxysteroid dehydrogenase and BA hydrolase to healthy levels in DSS-treated mice. Although a majority of BAs were suppressed by DSS, a few secondary BAs such as hyodeoxycholic acid (HDCA) were markedly enriched by ALG. Furthermore, ALG significantly upregulated the expression of a major BA receptor, the farnesoid X receptor, while suppressing NF-κB and c-Jun N-terminal kinase (JNK) activation. Depletion of the intestinal microbiota completely abrogated the protective effect of ALG in DSS-treated mice. Similar to ALG, B. animalis and HDCA exerted a strong anti-inflammatory effect in DSS-induced colitis by downregulating inflammatory cytokines (interleukin-1β [IL-1β], IL-6, and tumor necrosis factor alpha [TNF-α]). Taken together, these results indicated that ALG achieves its alleviating effect on intestinal inflammation through regulation of the microbiota by enriching B. animalis to promote the biosynthesis of specific secondary BAs such as HDCA. These findings have revealed intricate interactions among the intestinal microbiota, BA metabolism, and intestinal health and further provided a novel strategy to improve intestinal health through targeted manipulation of the intestinal microbiota and BA metabolism. IMPORTANCE ALG has been shown to ameliorate inflammatory bowel disease (IBD), but little is known about the mechanism of its anti-inflammatory action. This study was the first to demonstrate that ALG provided a preventive effect against colitis in an intestinal microbiota-dependent manner. Furthermore, we confirmed that by selectively enriching intestinal B. animalis and secondary BA (HDCA), ALG contributed to the attenuation of DSS-induced colitis. These findings contribute to a better understanding of the mechanism of action of ALG on the attenuation of colitis and provide new approaches to IBD therapy by regulating gut microbial BA metabolism.
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Affiliation(s)
- Yu Pi
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
- Key Laboratory of Feed Biotechnology of Ministry of Agriculture and Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiangyu Zhang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Yujun Wu
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Zhenyu Wang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Yu Bai
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Xiaoyi Liu
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Dandan Han
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Jinbiao Zhao
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Isabel Tobin
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Jiangchao Zhao
- Department of Animal Science, Division of Agriculture, University of Arkansas, Fayetteville, Arkansas, USA
| | - Guolong Zhang
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Junjun Wang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
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8
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Allaband C, Lingaraju A, Martino C, Russell B, Tripathi A, Poulsen O, Dantas Machado AC, Zhou D, Xue J, Elijah E, Malhotra A, Dorrestein PC, Knight R, Haddad GG, Zarrinpar A. Intermittent Hypoxia and Hypercapnia Alter Diurnal Rhythms of Luminal Gut Microbiome and Metabolome. mSystems 2021; 6:e0011621. [PMID: 34184915 PMCID: PMC8269208 DOI: 10.1128/msystems.00116-21] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 05/07/2021] [Indexed: 12/12/2022] Open
Abstract
Obstructive sleep apnea (OSA), characterized by intermittent hypoxia and hypercapnia (IHC), affects the composition of the gut microbiome and metabolome. The gut microbiome has diurnal oscillations that play a crucial role in regulating circadian and overall metabolic homeostasis. Thus, we hypothesized that IHC adversely alters the gut luminal dynamics of key microbial families and metabolites. The objective of this study was to determine the diurnal dynamics of the fecal microbiome and metabolome of Apoe-/- mice after a week of IHC exposure. Individually housed, 10-week-old Apoe-/- mice on an atherogenic diet were split into two groups. One group was exposed to daily IHC conditions for 10 h (Zeitgeber time 2 [ZT2] to ZT12), while the other was maintained in room air. Six days after the initiation of the IHC conditions, fecal samples were collected every 4 h for 24 h (6 time points). We performed 16S rRNA gene amplicon sequencing and untargeted liquid chromatography-mass spectrometry (LC-MS) to assess changes in the microbiome and metabolome. IHC induced global changes in the cyclical dynamics of the gut microbiome and metabolome. Ruminococcaceae, Lachnospiraceae, S24-7, and Verrucomicrobiaceae had the greatest shifts in their diurnal oscillations. In the metabolome, bile acids, glycerolipids (phosphocholines and phosphoethanolamines), and acylcarnitines were greatly affected. Multi-omic analysis of these results demonstrated that Ruminococcaceae and tauro-β-muricholic acid (TβMCA) cooccur and are associated with IHC conditions and that Coriobacteriaceae and chenodeoxycholic acid (CDCA) cooccur and are associated with control conditions. IHC significantly change the diurnal dynamics of the fecal microbiome and metabolome, increasing members and metabolites that are proinflammatory and proatherogenic while decreasing protective ones. IMPORTANCE People with obstructive sleep apnea are at a higher risk of high blood pressure, type 2 diabetes, cardiac arrhythmias, stroke, and sudden cardiac death. We wanted to understand whether the gut microbiome changes induced by obstructive sleep apnea could potentially explain some of these medical problems. By collecting stool from a mouse model of this disease at multiple time points during the day, we studied how obstructive sleep apnea changed the day-night patterns of microbes and metabolites of the gut. Since the oscillations of the gut microbiome play a crucial role in regulating metabolism, changes in these oscillations can explain why these patients can develop so many metabolic problems. We found changes in microbial families and metabolites that regulate many metabolic pathways contributing to the increased risk for heart disease seen in patients with obstructive sleep apnea.
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Affiliation(s)
- Celeste Allaband
- Division of Gastroenterology, University of California, San Diego, La Jolla, California, USA
- Biomedical Sciences Graduate Program, University of California, San Diego, La Jolla, California, USA
- Department of Pediatrics, University of California, San Diego, La Jolla, California, USA
| | - Amulya Lingaraju
- Division of Gastroenterology, University of California, San Diego, La Jolla, California, USA
| | - Cameron Martino
- Department of Pediatrics, University of California, San Diego, La Jolla, California, USA
- Bioinformatics and Systems Biology Program, University of California, San Diego, La Jolla, California, USA
- Center for Microbiome Innovation, University of California, San Diego, La Jolla, California, USA
| | - Baylee Russell
- Division of Gastroenterology, University of California, San Diego, La Jolla, California, USA
| | - Anupriya Tripathi
- Department of Pediatrics, University of California, San Diego, La Jolla, California, USA
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy, University of California, San Diego, La Jolla, California, USA
| | - Orit Poulsen
- Department of Pediatrics, University of California, San Diego, La Jolla, California, USA
| | | | - Dan Zhou
- Department of Pediatrics, University of California, San Diego, La Jolla, California, USA
| | - Jin Xue
- Department of Pediatrics, University of California, San Diego, La Jolla, California, USA
| | - Emmanuel Elijah
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy, University of California, San Diego, La Jolla, California, USA
| | - Atul Malhotra
- Center for Circadian Biology, University of California, San Diego, La Jolla, California, USA
| | - Pieter C. Dorrestein
- Biomedical Sciences Graduate Program, University of California, San Diego, La Jolla, California, USA
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy, University of California, San Diego, La Jolla, California, USA
- Center for Microbiome Innovation, University of California, San Diego, La Jolla, California, USA
| | - Rob Knight
- Biomedical Sciences Graduate Program, University of California, San Diego, La Jolla, California, USA
- Department of Pediatrics, University of California, San Diego, La Jolla, California, USA
- Center for Microbiome Innovation, University of California, San Diego, La Jolla, California, USA
- Department of Computer Science and Engineering, University of California, San Diego, La Jolla, California, USA
| | - Gabriel G. Haddad
- Biomedical Sciences Graduate Program, University of California, San Diego, La Jolla, California, USA
- Department of Pediatrics, University of California, San Diego, La Jolla, California, USA
- Department of Neuroscience, University of California, San Diego, La Jolla, California, USA
- Center for Microbiome Innovation, University of California, San Diego, La Jolla, California, USA
| | - Amir Zarrinpar
- Division of Gastroenterology, University of California, San Diego, La Jolla, California, USA
- Biomedical Sciences Graduate Program, University of California, San Diego, La Jolla, California, USA
- Center for Microbiome Innovation, University of California, San Diego, La Jolla, California, USA
- Institute of Diabetes and Metabolic Health, University of California, San Diego, La Jolla, California, USA
- Center for Circadian Biology, University of California, San Diego, La Jolla, California, USA
- VA Health Sciences San Diego, La Jolla, California, USA
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9
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Song M, Zhang F, Chen L, Yang Q, Su H, Yang X, He H, Ling M, Zheng J, Duan C, Lai X, Pan M, Zhu X, Wang L, Gao P, Shu G, Jiang Q, Wang S. Dietary chenodeoxycholic acid improves growth performance and intestinal health by altering serum metabolic profiles and gut bacteria in weaned piglets. ANIMAL NUTRITION (ZHONGGUO XU MU SHOU YI XUE HUI) 2021; 7:365-375. [PMID: 34258424 PMCID: PMC8245770 DOI: 10.1016/j.aninu.2020.07.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 06/13/2020] [Accepted: 07/10/2020] [Indexed: 01/10/2023]
Abstract
Nutritional diarrhea and subsequent performance degradation in weaned piglets are major challenges for the pig industry. Bile acids (BA) can be added to the diet as emulsifiers. This experiment was conducted to investigate the effects of chenodeoxycholic acid (CDCA), a major primary BA, on growth performance, serum metabolic profiles and gut health in weaned piglets. A total of 72 healthy weaned piglets were randomly assigned to the control (CON) and the CDCA groups, which were feed a basal diet and the basal diet supplemented with 200 mg/kg CDCA for 30 d, respectively. Our results demonstrated that CDCA significantly increased final BW and average daily gain (ADG), decreased feed-to-gain (F:G) ratio and tended to reduce diarrhea incidence. In addition, CDCA increased the villus height-to-crypt depth (V:C) ratio, elevated goblet cell numbers and the expression of tight junction proteins, suggesting the enhancement of intestinal barrier function. As an emulsifier, CDCA increased jejunal lipase activity and the mRNA expression of pancreatic lipases. CDCA supplementation also altered the serum metabolic profiles, including increasing the levels of indole 3-acetic acid, N'-formylkynurenine and theobromine that were beneficial for gut health. Moreover, the relative abundance of 2 beneficial gut bacteria, Prevotella 9 and Prevotellaceae TCG-001, were increased, whereas the relative abundance of a harmful bacteria, Dorea, was decreased in the gut of weaned piglets supplemented with CDCA. Importantly, the altered serum metabolic profiles showed a strong correlation with the changed gut bacteria. In conclusion, CDCA improved the growth performance of weaned piglets by improving intestinal morphology and barrier function, and enhancing lipid digestion, accompanied by alterations of serum metabolic profiles, and changes in relative abundance of certain gut bacteria.
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Affiliation(s)
- Min Song
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, 510642, China
| | - Fenglin Zhang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, 510642, China
| | - Lin Chen
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, 510642, China
| | - Qiang Yang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, 510642, China
| | - Han Su
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, 510642, China
| | - Xiaohua Yang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, 510642, China
| | - Haiwen He
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, 510642, China
| | - Mingfa Ling
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, 510642, China
| | - Jisong Zheng
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, 510642, China
| | - Chen Duan
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, 510642, China
| | - Xumin Lai
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, 510642, China
| | - Mushui Pan
- Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, 510610, China
| | - Xiaotong Zhu
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, 510642, China
| | - Lina Wang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, 510642, China
| | - Ping Gao
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, 510642, China
| | - Gang Shu
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, 510642, China
| | - Qingyan Jiang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, 510642, China
| | - Songbo Wang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
- National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, 510642, China
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10
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Golforoush P, Yellon DM, Davidson SM. Mouse models of atherosclerosis and their suitability for the study of myocardial infarction. Basic Res Cardiol 2020; 115:73. [PMID: 33258000 PMCID: PMC7704510 DOI: 10.1007/s00395-020-00829-5] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 10/28/2020] [Indexed: 12/17/2022]
Abstract
Atherosclerotic plaques impair vascular function and can lead to arterial obstruction and tissue ischaemia. Rupture of an atherosclerotic plaque within a coronary artery can result in an acute myocardial infarction, which is responsible for significant morbidity and mortality worldwide. Prompt reperfusion can salvage some of the ischaemic territory, but ischaemia and reperfusion (IR) still causes substantial injury and is, therefore, a therapeutic target for further infarct limitation. Numerous cardioprotective strategies have been identified that can limit IR injury in animal models, but none have yet been translated effectively to patients. This disconnect prompts an urgent re-examination of the experimental models used to study IR. Since coronary atherosclerosis is the most prevalent morbidity in this patient population, and impairs coronary vessel function, it is potentially a major confounder in cardioprotective studies. Surprisingly, most studies suggest that atherosclerosis does not have a major impact on cardioprotection in mouse models. However, a major limitation of atherosclerotic animal models is that the plaques usually manifest in the aorta and proximal great vessels, and rarely in the coronary vessels. In this review, we examine the commonly used mouse models of atherosclerosis and their effect on coronary artery function and infarct size. We conclude that none of the commonly used strains of mice are ideal for this purpose; however, more recently developed mouse models of atherosclerosis fulfil the requirement for coronary artery lesions, plaque rupture and lipoprotein patterns resembling the human profile, and may enable the identification of therapeutic interventions more applicable in the clinical setting.
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MESH Headings
- Animals
- Aortic Diseases/complications
- Aortic Diseases/genetics
- Aortic Diseases/metabolism
- Aortic Diseases/pathology
- Atherosclerosis/complications
- Atherosclerosis/genetics
- Atherosclerosis/metabolism
- Atherosclerosis/pathology
- Coronary Artery Disease/complications
- Coronary Artery Disease/genetics
- Coronary Artery Disease/metabolism
- Coronary Artery Disease/pathology
- Diet, High-Fat
- Disease Models, Animal
- Genetic Predisposition to Disease
- Mice, Knockout, ApoE
- Myocardial Infarction/etiology
- Myocardial Infarction/genetics
- Myocardial Infarction/metabolism
- Myocardial Infarction/pathology
- Myocardium/pathology
- Phenotype
- Plaque, Atherosclerotic
- Receptors, LDL/deficiency
- Receptors, LDL/genetics
- Rupture, Spontaneous
- Scavenger Receptors, Class B/deficiency
- Scavenger Receptors, Class B/genetics
- Species Specificity
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Affiliation(s)
- Pelin Golforoush
- The Hatter Cardiovascular Institute, 67 Chenies Mews, London, WC1E 6HX, UK
| | - Derek M Yellon
- The Hatter Cardiovascular Institute, 67 Chenies Mews, London, WC1E 6HX, UK
| | - Sean M Davidson
- The Hatter Cardiovascular Institute, 67 Chenies Mews, London, WC1E 6HX, UK.
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11
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Song M, Yang Q, Zhang F, Chen L, Su H, Yang X, He H, Liu F, Zheng J, Ling M, Lai X, Zhu X, Wang L, Gao P, Shu G, Jiang Q, Wang S. Hyodeoxycholic acid (HDCA) suppresses intestinal epithelial cell proliferation through FXR-PI3K/AKT pathway, accompanied by alteration of bile acids metabolism profiles induced by gut bacteria. FASEB J 2020; 34:7103-7117. [PMID: 32246800 DOI: 10.1096/fj.201903244r] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 03/03/2020] [Accepted: 03/20/2020] [Indexed: 12/13/2022]
Abstract
Bile acids (BAs) have been implicated in regulation of intestinal epithelial signaling and function. This study aimed to investigate the effects of hyodeoxycholic acid (HDCA) on intestinal epithelial cell proliferation and explore the underlying mechanisms. IPEC-J2 cells and weaned piglets were treated with HDCA and the contributions of cellular signaling pathways, BAs metabolism profiles and gut bacteria were assessed. In vitro, HDCA suppressed IPEC-J2 proliferation via the BAs receptor FXR but not TGR5. In addition, HDCA inhibited the PI3K/AKT pathway, while knockdown of FXR or constitutive activation of AKT eliminated the inhibitory effects of HDCA, suggesting that FXR-dependent inhibition of PI3K/AKT pathway was involved in HDCA-suppressed IPEC-J2 proliferation. In vivo, dietary HDCA inhibited intestinal expression of proliferative markers and PI3K/AKT pathway in weaned piglets. Meanwhile, HDCA altered the BAs metabolism profiles, with decrease in primary BA and increase in total and secondary BAs in feces, and reduction of conjugated BAs in serum. Furthermore, HDCA increased abundance of the gut bacteria associated with BAs metabolism, and thereby induced BAs profiles alternation, which might indirectly contribute to HDCA-suppressed cell proliferation. Together, HDCA suppressed intestinal epithelial cell proliferation through FXR-PI3K/AKT signaling pathway, accompanied by alteration of BAs metabolism profiles induced by gut bacteria.
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Affiliation(s)
- Min Song
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, P. R. China.,National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, P. R. China
| | - Qiang Yang
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, P. R. China.,National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, P. R. China
| | - Fenglin Zhang
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, P. R. China.,National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, P. R. China
| | - Lin Chen
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, P. R. China.,National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, P. R. China
| | - Han Su
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, P. R. China.,National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, P. R. China
| | - Xiaohua Yang
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, P. R. China.,National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, P. R. China
| | - Haiwen He
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, P. R. China.,National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, P. R. China
| | - Fangfang Liu
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, P. R. China.,National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, P. R. China
| | - Jisong Zheng
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, P. R. China.,National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, P. R. China
| | - Mingfa Ling
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, P. R. China.,National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, P. R. China
| | - Xumin Lai
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, P. R. China.,National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, P. R. China
| | - Xiaotong Zhu
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, P. R. China.,National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, P. R. China
| | - Lina Wang
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, P. R. China.,National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, P. R. China
| | - Ping Gao
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, P. R. China.,National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, P. R. China
| | - Gang Shu
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, P. R. China.,National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, P. R. China
| | - Qingyan Jiang
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, P. R. China.,National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, P. R. China
| | - Songbo Wang
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, P. R. China.,National Engineering Research Center for Breeding Swine Industry and ALLTECH-SCAU Animal Nutrition Control Research Alliance, South China Agricultural University, Guangzhou, P. R. China
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12
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Saraswathi V, Heineman R, Alnouti Y, Shivaswamy V, Desouza CV. A combination of Omega-3 PUFAs and COX inhibitors: A novel strategy to manage obesity-linked dyslipidemia and adipose tissue inflammation. J Diabetes Complications 2020; 34:107494. [PMID: 31787562 DOI: 10.1016/j.jdiacomp.2019.107494] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 11/20/2019] [Accepted: 11/20/2019] [Indexed: 01/30/2023]
Abstract
We previously reported that fish oil in combination with cyclooxygenase (COX) inhibitors exerts enhanced hypolipidemic and anti-inflammatory effects in mice. Here, we sought to determine the effects of omega-3 polyunsaturated fatty acids (ω-3 PUFAs) in combination with naproxen (NX), a COX inhibitor, on dyslipidemia and gene expression in adipose tissue (AT) in humans. Obese dyslipidemic patients were randomly assigned to one of these interventions for 12 wk: 1) Standard nutrition counseling (control), 2) ω-3 PUFAs (2 g twice daily), 3) NX (220 mg twice daily), and 4) ω-3 PUFAs (2 g twice daily) + NX (220 mg twice daily). The serum triglycerides showed a trend towards a reduction and a significant reduction (P<0.05) in ω-3 and ω3 + NX-treated subjects, respectively, compared to control. The mRNA expression of vascular cell adhesion molecule-1 (Vcam1), an inflammatory marker, increased significantly in AT of ω-3 PUFA-treated subjects but not in ω-3 PUFAs+NX-treated group. The plasma level of glycine-conjugated hyodeoxycholic acid, a secondary bile acid with hypolipidemic property, increased significantly in ω-3 PUFAs + NX-treated group. Our data suggest that combining NX with ω-3 PUFAs increases their effectiveness in reducing serum TG and favorably altering AT gene expression and plasma bile acid profile.
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Affiliation(s)
- Viswanathan Saraswathi
- Internal Medicine, Division of Diabetes, Endocrinology, and Metabolism, University of Nebraska Medical Center, United States of America; VA Nebraska-Western Iowa Health Care System, Omaha, NE, United States of America
| | - Robert Heineman
- Internal Medicine, Division of Diabetes, Endocrinology, and Metabolism, University of Nebraska Medical Center, United States of America; VA Nebraska-Western Iowa Health Care System, Omaha, NE, United States of America
| | - Yazen Alnouti
- Pharmaceutical Sciences, University of Nebraska Medical Center, United States of America
| | - Vijay Shivaswamy
- Internal Medicine, Division of Diabetes, Endocrinology, and Metabolism, University of Nebraska Medical Center, United States of America; VA Nebraska-Western Iowa Health Care System, Omaha, NE, United States of America
| | - Cyrus V Desouza
- Internal Medicine, Division of Diabetes, Endocrinology, and Metabolism, University of Nebraska Medical Center, United States of America; VA Nebraska-Western Iowa Health Care System, Omaha, NE, United States of America.
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Benítez-Santana T, Hugo SE, Schlegel A. Role of Intestinal LXRα in Regulating Post-prandial Lipid Excursion and Diet-Induced Hypercholesterolemia and Hepatic Lipid Accumulation. Front Physiol 2017; 8:280. [PMID: 28536535 PMCID: PMC5422522 DOI: 10.3389/fphys.2017.00280] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 04/18/2017] [Indexed: 12/12/2022] Open
Abstract
Post-prandial hyperlipidemia has emerged as a cardiovascular risk factor with limited therapeutic options. The Liver X receptors (Lxrs) are nuclear hormone receptors that regulate cholesterol elimination. Knowledge of their role in regulating the absorption and handling of dietary fats is incomplete. The purpose of this study was to determine the role of intestinal Lxrα in post-prandial intestinal lipid transport. Using Lxrα knockout (nr1h3−/−) and intestine-limited Lxrα over-expressing [Tg(fabp2a:EGFP-nr1h3)] zebrafish strains, we measured post-prandial lipid excursion with live imaging in larvae and physiological methods in adults. We also conducted a long-term high-cholesterol dietary challenge in adults to examine the chronic effect of modulating nr1h3 gene dose on the development of hypercholesterolemia and hepatic lipid accumulation. Over-expression of Lxrα in the intestine delays the transport of ingested lipids in larvae, while deletion of Lxrα increases the rate of lipid transport. Pre-treating wildtype larvae with the liver-sparing Lxr agonist hyodeoxycholic acid also delayed the rate of intestinal lipid transport in larvae. In adult males, deletion of Lxrα accelerates intestinal transport of ingested lipids. Adult females showed higher plasma Lipoprotein lipase (Lpl) activity compared to males, and lower post-gavage blood triacylglycerol (TAG) excursion. Despite the sexually dimorphic effect on acute intestinal lipid handling, Tg(fabp2a:EGFP-nr1h3) adults of both sexes are protected from high cholesterol diet (HCD)-induced hepatic lipid accumulation, while nr1h3−/− mutants are sensitive to the effects of HCD challenge. These data indicate that intestinal Lxr activity dampens the pace of intestinal lipid transport cell-autonomously. Selective activation of intestinal Lxrα holds therapeutic promise.
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Affiliation(s)
- Tibiábin Benítez-Santana
- University of Utah Molecular Medicine Program, School of Medicine, University of UtahSalt Lake City, UT, USA.,Division of Endocrinology, Metabolism and Diabetes, Department of Internal Medicine, School of Medicine, University of UtahSalt Lake City, UT, USA
| | - Sarah E Hugo
- University of Utah Molecular Medicine Program, School of Medicine, University of UtahSalt Lake City, UT, USA.,Division of Endocrinology, Metabolism and Diabetes, Department of Internal Medicine, School of Medicine, University of UtahSalt Lake City, UT, USA
| | - Amnon Schlegel
- University of Utah Molecular Medicine Program, School of Medicine, University of UtahSalt Lake City, UT, USA.,Division of Endocrinology, Metabolism and Diabetes, Department of Internal Medicine, School of Medicine, University of UtahSalt Lake City, UT, USA.,Department of Biochemistry, School of Medicine, University of UtahSalt Lake City, UT, USA.,Department of Nutrition and Integrative Physiology, College of Health, University of UtahSalt Lake City, UT, USA
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Dual activation of the bile acid nuclear receptor FXR and G-protein-coupled receptor TGR5 protects mice against atherosclerosis. PLoS One 2014; 9:e108270. [PMID: 25237811 PMCID: PMC4169583 DOI: 10.1371/journal.pone.0108270] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Accepted: 08/26/2014] [Indexed: 12/17/2022] Open
Abstract
Bile acid signaling is a critical regulator of glucose and energy metabolism, mainly through the nuclear receptor FXR and the G protein-coupled receptor TGR. The purpose of the present study was to investigate whether dual activation of FXR and TGR5 plays a significant role in the prevention of atherosclerosis progression. To evaluate the effects of bile acid signaling in atherogenesis, ApoE-/- mice and LDLR-/- mice were treated with an FXR/TGR5 dual agonist (INT-767). INT-767 treatment drastically reduced serum cholesterol levels. INT-767 treatment significantly reduced atherosclerotic plaque formation in both ApoE-/- and LDLR-/- mice. INT-767 decreased the expression of pro-inflammatory cytokines and chemokines in the aortas of ApoE-/- mice through the inactivation of NF-κB. In addition, J774 macrophages treated with INT-767 had significantly lower levels of active NF-κB, resulting in cytokine production in response to LPS through a PKA dependent mechanism. This study demonstrates that concurrent activation of FXR and TGR5 attenuates atherosclerosis by reducing both circulating lipids and inflammation.
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Shih DM, Shaposhnik Z, Meng Y, Rosales M, Wang X, Wu J, Ratiner B, Zadini F, Zadini G, Lusis AJ. Hyodeoxycholic acid improves HDL function and inhibits atherosclerotic lesion formation in LDLR-knockout mice. FASEB J 2013; 27:3805-17. [PMID: 23752203 DOI: 10.1096/fj.12-223008] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We examined the effects of a natural secondary bile acid, hyodeoxycholic acid (HDCA), on lipid metabolism and atherosclerosis in LDL receptor-null (LDLRKO) mice. Female LDLRKO mice were maintained on a Western diet for 8 wk and then divided into 2 groups that received chow, or chow + 1.25% HDCA, diets for 15 wk. We observed that mice fed the HDCA diet were leaner and exhibited a 37% (P<0.05) decrease in fasting plasma glucose level. HDCA supplementation significantly decreased atherosclerotic lesion size at the aortic root region, the entire aorta, and the innominate artery by 44% (P<0.0001), 48% (P<0.01), and 94% (P<0.01), respectively, as compared with the chow group. Plasma VLDL/IDL/LDL cholesterol levels were significantly decreased, by 61% (P<0.05), in the HDCA group as compared with the chow diet group. HDCA supplementation decreased intestinal cholesterol absorption by 76% (P<0.0001) as compared with the chow group. Furthermore, HDL isolated from the HDCA group exhibited significantly increased ability to mediate cholesterol efflux ex vivo as compared with HDL of the chow diet group. In addition, HDCA significantly increased the expression of genes involved in cholesterol efflux, such as Abca1, Abcg1, and Apoe, in a macrophage cell line. Thus, HDCA is a candidate for antiatherosclerotic drug therapy.
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Affiliation(s)
- Diana M Shih
- Division of Cardiology, David Geffen School of Medicine at UCLA, 10833 Le Conte Ave., A2-237 CHS, Los Angeles, CA 90095-1679, USA.
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Matsuoka K, Takagi K, Honda C. Micelle formation of sodium hyodeoxycholate. Chem Phys Lipids 2013; 172-173:6-13. [PMID: 23665117 DOI: 10.1016/j.chemphyslip.2013.04.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Revised: 04/10/2013] [Accepted: 04/17/2013] [Indexed: 10/26/2022]
Abstract
Sodium hyodeoxycholate (NaHDC) is the main component of hog bile salts, which play a role in the absorption of sparingly soluble materials in the intestinal solution. The biosurfactant has an amphiphilic molecular structure, similar to that of ursodeoxycholate from bear gallbladder. Micelle formation from hyodeoxycholate was studied at 308.2K using pyrene fluorescence probe to determine critical micelle concentrations (cmc) at various NaCl concentrations. The change in the fluorescence spectrum peak ratios with NaHDC concentration indicated two steps for bile salt aggregation. The first step was the formation of small micelles (cmc) at 5mM, and the second step was the formation of stable aggregates at 14 mM in aqueous solution. The aggregation of hyodeoxycholate, analyzed using the stepwise association model, was found to grow its aggregation number from 4 to 7 with increasing concentration. The aggregation number in aqueous solution was also confirmed by the static light scattering method. The average measured aggregation number of the micelles was 6.7. The micellar size was relatively small as measured by either method, but it was covered by general aggregation number of human bile salts. The degree of counterion binding to the micelles, determined using a sodium ion-selective electrode, was ca. 0.5 for the NaHDC micelles. This value was relatively high among typical bile salts. Moreover, the solubilization capacity of the NaHDC micelles was assessed using cholesterol. It became clear that NaHDC micelles hardly solubilized cholesterol compared to typical human bile salts. The maximum solubilization by NaHDC was equivalent only to that by sodium ursodeoxycholate.
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Affiliation(s)
- Keisuke Matsuoka
- Department of Physical Chemistry, Showa Pharmaceutical University, Higashi-Tamagawagakuen 3-3165, Machida, Tokyo, 194-8543, Japan.
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17
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Ma Y, Wang W, Zhang J, Lu Y, Wu W, Yan H, Wang Y. Hyperlipidemia and atherosclerotic lesion development in Ldlr-deficient mice on a long-term high-fat diet. PLoS One 2012; 7:e35835. [PMID: 22558236 PMCID: PMC3338468 DOI: 10.1371/journal.pone.0035835] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Accepted: 03/23/2012] [Indexed: 11/19/2022] Open
Abstract
Background Mice deficient in the LDL receptor (Ldlr−/− mice) have been widely used as a model to mimic human atherosclerosis. However, the time-course of atherosclerotic lesion development and distribution of lesions at specific time-points are yet to be established. The current study sought to determine the progression and distribution of lesions in Ldlr−/− mice. Methodology/Principal Findings Ldlr-deficient mice fed regular chow or a high-fat (HF) diet for 0.5 to 12 months were analyzed for atherosclerotic lesions with en face and cross-sectional imaging. Mice displayed significant individual differences in lesion development when fed a chow diet, whereas those on a HF diet developed lesions in a time-dependent and site-selective manner. Specifically, mice subjected to the HF diet showed slight atherosclerotic lesions distributed exclusively in the aortic roots or innominate artery before 3 months. Lesions extended to the thoracic aorta at 6 months and abdominal aorta at 9 months. Cross-sectional analysis revealed the presence of advanced lesions in the aortic sinus after 3 months in the group on the HF diet and in the innominate artery at 6 to 9 months. The HF diet additionally resulted in increased total cholesterol, LDL, glucose, and HBA1c levels, along with the complication of obesity. Conclusions/Significance Ldlr-deficient mice on the HF diet tend to develop site-selective and size-specific atherosclerotic lesions over time. The current study should provide information on diet induction or drug intervention times and facilitate estimation of the appropriate locations of atherosclerotic lesions in Ldlr−/− mice.
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Affiliation(s)
- Yanling Ma
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Wenyi Wang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Jie Zhang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Youli Lu
- Central Laboratory, Shanghai Xuhui Central Hospital, Shanghai, China
| | - Wenyu Wu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Hong Yan
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Yiping Wang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- * E-mail:
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18
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Watanabe S, Tsuneyama K. Cattle bile but not bear bile or pig bile induces lipid profile changes and fatty liver injury in mice: mediation by cholic acid. J Toxicol Sci 2012; 37:105-21. [DOI: 10.2131/jts.37.105] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Shiro Watanabe
- Division of Clinical Application, Department of Clinical Sciences, Institute of Natural Medicine, University of Toyama
| | - Koichi Tsuneyama
- Department of Molecular Pathology, Graduate School of Medicine and Pharmaceutical Sciences for Research, University of Toyama
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Greenberg ME, Smith JD, Sehayek E. Moderately decreased cholesterol absorption rates are associated with a large atheroprotective effect. Arterioscler Thromb Vasc Biol 2009; 29:1745-50. [PMID: 19661480 DOI: 10.1161/atvbaha.109.194605] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Human treatment with ezetimibe results in a moderate 50% to 54% decrease in cholesterol absorption and a 15% to 20% decrease in plasma LDL-cholesterol levels; nevertheless, the efficacy of ezetimibe therapy has been recently challenged by the ENHANCE trial. We examined the efficacy of a moderate decrease in cholesterol absorption in preventing atherosclerosis formation in the mouse. METHODS AND RESULTS Congenic 14DKK animals, consisting of a castaneus (CASA/Rk) chromosome 14 interval introgressed onto the C57BL/6J background, displayed a moderate decrease in cholesterol absorption rates. The effect of moderately decreased absorption on atherosclerosis formation was determined in 14DKK apolipoprotein E knockouts (14DKK-apoEKO). When compared to chow diet-fed control apoEKO mice, congenic 14DKK-apoEKO displayed a moderate 41% decrease in cholesterol absorption rates, 30% to 37% decrease in plasma cholesterol levels, and a 70% decrease in atherosclerosis formation. Studies on cholesterol efflux and reverse cholesterol transport (RCT) from 14DKK bone marrow-derived macrophages rejected a 14DKK interval-dependent atheroprotective effects that operate in macrophages. In contrast, 14DKK-apoEKO congenics were characterized by a 60% increase in RCT from peripheral tissue macrophages. CONCLUSIONS These studies strongly suggest that moderately decreased cholesterol absorption rates result in a large atheroprotective effect attributable to a decrease in plasma cholesterol levels and an increase in RCT from peripheral tissue macrophages.
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Abstract
Lipid-enriched diets are often used to induce or accelerate the rate of atherosclerotic lesion development in murine models of atherosclerosis. It appears that the induction of persistent hypercholesterolemia to levels > or approximately to 300 mg/dL is required for the development of experimental atherosclerosis in the mouse. A variety of different diets have been used that vary in the level of cholesterol, the level and type of fatty acid, and the absence or presence of cholate. Each of these components as well as the protein source has been shown to influence lipoprotein level and/or atherosclerosis, with dietary cholesterol being the major proatherogenic component. In some instances the effects of these components on the expression of hepatic genes relevant to lipid homeostasis has been observed. An appreciation of the effect of the differences in diet composition on these processes is important to compare results from different atherosclerosis studies, so the composition of the diets used should always be reported or referenced. Cholate should not be used unless its effects are being specifically investigated.
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Affiliation(s)
- Godfrey S Getz
- Department of Pathology, University of Chicago, Chicago, IL 60637, USA.
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21
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Teupser D, Persky AD, Breslow JL. Induction of atherosclerosis by low-fat, semisynthetic diets in LDL receptor-deficient C57BL/6J and FVB/NJ mice: comparison of lesions of the aortic root, brachiocephalic artery, and whole aorta (en face measurement). Arterioscler Thromb Vasc Biol 2003; 23:1907-13. [PMID: 12907460 DOI: 10.1161/01.atv.0000090126.34881.b1] [Citation(s) in RCA: 127] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE A semisynthetic diet with varying amounts of cholesterol was used to achieve hypercholesterolemia and atherosclerosis in LDL receptor-deficient (LDLR-/-) mice. Atherosclerotic lesions were measured as cross-sectional area at the aortic root and brachiocephalic artery and by en face analysis of aortic lesion area in 209 male and female animals on the C57BL/6J (B6.LDLR-/-) and FVB/NJ (FVB.LDLR-/-) backgrounds. METHODS AND RESULTS The semisynthetic diet containing 4.3% fat and 0.00% or 0.02% cholesterol was sufficient to induce hypercholesterolemia (12.6+/-2.4 mmol/L) and atherosclerosis in B6.LDLR-/- mice at the aortic root (98,980+/-37 727 microm2) and brachiocephalic artery (12,039+/-12,750 microm2) but did not produce significant lesions in the aorta measurable by the en face method. Raising dietary cholesterol to 0.15%, 0.30%, or 0.50% more than doubled plasma cholesterol levels (35.9+/-8.5 mmol/L) and resulted in significant en face lesions. It also led to a significant increase in atherosclerotic lesion area at the aortic root (547,753+/-182,151 microm2) and brachiocephalic arteries (125,666+/-59,339 microm2). Although FVB.LDLR-/- mice developed comparable cholesterol levels, they were relatively atherosclerosis resistant and had many-fold smaller lesions. CONCLUSIONS These results should aid investigations of atherosclerosis in LDLR-/- mice by informing the selection of diet to be used and the location of lesions to be scored.
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Affiliation(s)
- Daniel Teupser
- Laboratory of Biochemical Genetics and Metabolism, The Rockefeller University, New York, NY 10021, USA
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Wang DQH, Tazuma S, Cohen DE, Carey MC. Feeding natural hydrophilic bile acids inhibits intestinal cholesterol absorption: studies in the gallstone-susceptible mouse. Am J Physiol Gastrointest Liver Physiol 2003; 285:G494-502. [PMID: 12748061 DOI: 10.1152/ajpgi.00156.2003] [Citation(s) in RCA: 145] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
We explored the influence of the hydrophilic-hydrophobic balance of a series of natural bile acids on cholesterol absorption in the mouse. Male C57L/J mice were fed standard chow or chow supplemented with 0.5% cholic; chenodeoxycholic; deoxycholic; dehydrocholic; hyocholic; hyodeoxycholic; alpha-, beta-, or omega-muricholic; ursocholic; or ursodeoxycholic acids for 7 days. Biliary bile salts were measured by reverse-phase HPLC, and hydrophobicity indices were estimated by Heuman's method. Cholesterol absorption efficiency was determined by a plasma dual-isotope ratio method. In mice fed chow, natural proportions of tauro-beta-muricholate (42 +/- 6%) and taurocholate (50 +/- 7%) with a hydrophobicity index of -0.35 +/- 0.04 produced cholesterol absorption of 37 +/- 5%. Because bacterial and especially hepatic biotransformations of specific bile acids occurred, hydrophobicity indices of the resultant bile salt pools differed from fed bile acids. We observed a significant positive correlation between hydrophobicity indices of the bile salt pool and percent cholesterol absorption. The principal mechanism whereby hydrophilic bile acids inhibit cholesterol absorption appears to be diminution of intraluminal micellar cholesterol solubilization. Gene expression of intestinal sterol efflux transporters Abcg5 and Abcg8 was upregulated by feeding cholic acid but not by hydrophilic beta-muricholic acid nor by hydrophobic deoxycholic acid. We conclude that the hydrophobicity of the bile salt pool predicts the effects of individual fed bile acids on intestinal cholesterol absorption. Natural alpha- and beta-muricholic acids are the most powerful inhibitors of cholesterol absorption in mice and might act as potent cholesterol-lowering agents for prevention of cholesterol deposition diseases in humans.
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Affiliation(s)
- David Q-H Wang
- Department of Medicine, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA.
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Hyogo H, Roy S, Paigen B, Cohen DE. Leptin promotes biliary cholesterol elimination during weight loss in ob/ob mice by regulating the enterohepatic circulation of bile salts. J Biol Chem 2002; 277:34117-24. [PMID: 12114517 DOI: 10.1074/jbc.m203912200] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Leptin administration to obese C57BL/6J (ob/ob) mice results in weight loss by reducing body fat. Because adipose tissue is an important storage depot for cholesterol, we explored evidence that leptin-induced weight loss in ob/ob mice was accompanied by transport of cholesterol to the liver and its elimination via bile. Consistent with mobilization of stored cholesterol, cholesterol concentrations in adipose tissue remained unchanged during weight loss. Plasma cholesterol levels fell sharply, and microscopic analyses of gallbladder bile revealed cholesterol crystals as well as cholesterol gallstones. Surprisingly, leptin reduced biliary cholesterol secretion rates without affecting secretion rates of bile salts or phospholipids. Instead, cholesterol supersaturation of gallbladder bile was due to marked decreases in bile salt hydrophobicity and not to hypersecretion of biliary cholesterol per se, such as occurs in humans during weight loss. In addition to regulating bile salt composition, leptin treatment decreased bile salt pool size. The smaller, more hydrophilic bile salt pool was associated with substantial decreases in intestinal cholesterol absorption. Within the liver, leptin treatment reduced the activity of 3-hydroxy-3-methylglutaryl-CoA reductase, but it did not change activities of cholesterol 7alpha-hydroxylase or acyl-CoA:cholesterol acyltransferase. These data suggest that leptin regulates biliary lipid metabolism to promote efficient elimination of excess cholesterol stored in adipose tissue. Cholesterol gallstone formation during weight loss in ob/ob mice appears to represent a pathologic consequence of an adaptive response that prevents absorption of biliary and dietary cholesterol.
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Affiliation(s)
- Hideyuki Hyogo
- Department of Medicine, Marion Bessin Liver Research Center, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
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Handschin C, Podvinec M, Amherd R, Looser R, Ourlin JC, Meyer UA. Cholesterol and bile acids regulate xenosensor signaling in drug-mediated induction of cytochromes P450. J Biol Chem 2002; 277:29561-7. [PMID: 12045201 DOI: 10.1074/jbc.m202739200] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Cytochromes P450 (CYP) constitute the major enzymatic system for metabolism of xenobiotics. Here we demonstrate that transcriptional activation of CYPs by the drug-sensing nuclear receptors pregnane X receptor, constitutive androstane receptor, and the chicken xenobiotic receptor (CXR) can be modulated by endogenous cholesterol and bile acids. Bile acids induce the chicken drug-activated CYP2H1 via CXR, whereas the hydroxylated metabolites of bile acids and oxysterols inhibit drug induction. The cholesterol-sensing liver X receptor competes with CXR, pregnane X receptor, or constitutive androstane receptor for regulation of drug-responsive enhancers from chicken CYP2H1, human CYP3A4, or human CYP2B6, respectively. Thus, not only cholesterol 7 alpha-hydroxylase (CYP7A1), but also drug-inducible CYPs, are diametrically affected by these receptors. Our findings reveal new insights into the increasingly complex network of nuclear receptors regulating lipid homeostasis and drug metabolism.
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Affiliation(s)
- Christoph Handschin
- Division of Pharmacology/Neurobiology, Biozentrum of the University of Basel, Klingelbergstrasse 50-70, CH-4056 Basel, Switzerland
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