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Xu YX, Liu LD, Zhu JY, Zhu SS, Ye BQ, Yang JL, Huang JY, Huang ZH, You Y, Li WK, He JL, Xia M, Liu Y. Alistipes indistinctus-derived hippuric acid promotes intestinal urate excretion to alleviate hyperuricemia. Cell Host Microbe 2024; 32:366-381.e9. [PMID: 38412863 DOI: 10.1016/j.chom.2024.02.001] [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: 10/09/2023] [Revised: 01/10/2024] [Accepted: 02/02/2024] [Indexed: 02/29/2024]
Abstract
Hyperuricemia induces inflammatory arthritis and accelerates the progression of renal and cardiovascular diseases. Gut microbiota has been linked to the development of hyperuricemia through unclear mechanisms. Here, we show that the abundance and centrality of Alistipes indistinctus are depleted in subjects with hyperuricemia. Integrative metagenomic and metabolomic analysis identified hippuric acid as the key microbial effector that mediates the uric-acid-lowering effect of A. indistinctus. Mechanistically, A. indistinctus-derived hippuric acid enhances the binding of peroxisome-proliferator-activated receptor γ (PPARγ) to the promoter of ATP-binding cassette subfamily G member 2 (ABCG2), which in turn boosts intestinal urate excretion. To facilitate this enhanced excretion, hippuric acid also promotes ABCG2 localization to the brush border membranes in a PDZ-domain-containing 1 (PDZK1)-dependent manner. These findings indicate that A. indistinctus and hippuric acid promote intestinal urate excretion and offer insights into microbiota-host crosstalk in the maintenance of uric acid homeostasis.
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Affiliation(s)
- Ying-Xi Xu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, and Department of Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, Guangdong, P.R. China
| | - Lu-Di Liu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, and Department of Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, Guangdong, P.R. China
| | - Jiang-Yuan Zhu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, and Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, Guangdong, P.R. China
| | - Shan-Shan Zhu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, and Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, Guangdong, P.R. China
| | - Bing-Qi Ye
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, and Department of Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, Guangdong, P.R. China
| | - Jia-Lu Yang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, and Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, Guangdong, P.R. China
| | - Jing-Yi Huang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, and Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, Guangdong, P.R. China
| | - Zhi-Hao Huang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, and Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, Guangdong, P.R. China
| | - Yi You
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, and Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, Guangdong, P.R. China
| | - Wen-Kang Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, and Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, Guangdong, P.R. China
| | - Jia-Lin He
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, and Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, Guangdong, P.R. China
| | - Min Xia
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, and Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, Guangdong, P.R. China
| | - Yan Liu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, and Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou 510080, Guangdong, P.R. China.
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Huang Y, Ge R, Qian J, Lu J, Qiao D, Chen R, Jiang H, Cui D, Zhang T, Wang N, He S, Wang M, Yan F. Lacticaseibacillus rhamnosus GG Improves Periodontal Bone Repair via Gut-Blood Axis in Hyperlipidemia. J Dent Res 2024; 103:253-262. [PMID: 38197171 DOI: 10.1177/00220345231217402] [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] [Indexed: 01/11/2024] Open
Abstract
Periodontal bone regeneration remains a clinical challenge, and hyperlipidemia can aggravate alveolar bone resorption. Probiotics have recently been reported to improve bone mass. We aimed to determine the role of Lacticaseibacillus rhamnosus GG (LGG) in periodontal bone regeneration improvement within the context of periodontitis with hyperlipidemia. A Sprague Dawley rat model for periodontitis, hyperlipidemia, and periodontal fenestration defect was constructed (n = 36) and administered LGG gavage for 6 wk (the rats were subsequently sacrificed). Fecal microbiota from donor rats 3 wk after LGG gavage was transplanted into recipient rats to evaluate the role of LGG-modulated gut microbiota in periodontal bone regeneration. Regenerated bone mass was detected using micro-computerized tomography and hematoxylin and eosin stain. Gut microbiota was analyzed using 16S ribosomal RNA sequencing. Serum metabolites were detected by liquid chromatography-mass spectrometry (6 wk after LGG gavage). The pro-osteogenic effects of screened serum metabolite were verified in vitro on bone marrow mesenchymal stem cells (BMMSCs). We found that the bone mineral density, bone volume (BV), trabecular bone volume fraction (BV/TV), and trabecular thickness of the regenerated periodontal bone increased after LGG gavage (P < 0.05) but had little effect on oral flora. After LGG gavage, Staphylococcus, Corynebacterium, and Collinsella in the gut of donors were significantly changed, and these differences were maintained in recipients, who also showed increased trabecular thickness of the regenerated periodontal bone (P < 0.05). These key genera were correlated with BV/TV and BV (P < 0.05). In addition, LGG gavage significantly regulated bone-related blood metabolites, of which selenomethionine promoted BMMSC osteogenesis. Notably, selenomethionine was associated with key gut genera (P < 0.05). Collectively, LGG improved periodontal bone regeneration in the context of periodontitis with hyperlipidemia by modulating gut microbiota and increasing pro-osteogenic metabolites in the blood. These results reveal new insights into the use of probiotics to promote periodontal bone regeneration via the gut-blood-bone axis.
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Affiliation(s)
- Y Huang
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China
- Department of Periodontology, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - R Ge
- School of Stomatology, Zunyi Medical University, Zunyi, China
| | - J Qian
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - J Lu
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - D Qiao
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - R Chen
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - H Jiang
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China
- Department of Stomatology, Dushu Lake Hospital Affiliated to Soochow University, Medical Center of Soochow University, Suzhou Dushu Lake Hospital, Suzhou, China
| | - D Cui
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - T Zhang
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - N Wang
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - S He
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - M Wang
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - F Yan
- Department of Periodontology, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China
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Argov-Argaman N, Altman H, Janssen JN, Daeem S, Raz C, Mesilati-Stahy R, Penn S, Monsonego-Ornan E. Effect of milk fat globules on growth and metabolism in rats fed an unbalanced diet. Front Nutr 2024; 10:1270171. [PMID: 38274212 PMCID: PMC10808575 DOI: 10.3389/fnut.2023.1270171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 11/23/2023] [Indexed: 01/27/2024] Open
Abstract
We assessed the effects of supplementing milk fat globules (MFG) on the growth and development of the skeleton in rats fed a Western unbalanced diet (UBD). The UBD is high in sugar and fat, low in protein, fiber, and micronutrients, and negatively impacts health. The MFG-a complex lipid-protein assembly secreted into milk-has a unique structure and composition, which differs significantly from isolated and processed dietary ingredients. Rats consuming the UBD exhibited growth retardation and disrupted bone structural and mechanical parameters; these were improved by supplementation with small MFG. The addition of small MFG increased the efficiency of protein utilization for growth, and improved trabecular and cortical bone parameters. Furthermore, consumption of UBD led to a decreased concentration of saturated fatty acids and increased levels of polyunsaturated fatty acids (PUFA), particularly omega-6 PUFA, in the serum, liver, and adipose tissue. The addition of small MFG restored PUFA concentration and the ratio of omega-6 to omega-3 PUFA in bone marrow and adipose tissue. Finally, large but not small MFG supplementation affected the cecal microbiome in rats. Overall, our results suggest that natural structure MFG supplementation can improve metabolism and bone development in rats fed an UBD, with the effects depending on MFG size. Moreover, the benefits of small MFG to bone development and metabolism were not mediated by the microbiome, as the detrimental effects of an UBD on the microbiome were not mitigated by MFG supplementation.
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Affiliation(s)
- Nurit Argov-Argaman
- Department of Animal Sciences, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Hodaya Altman
- School of Nutrition Science, Institute of Biochemistry, Hebrew University of Jerusalem, Jerusalem, Israel
| | | | - Seman Daeem
- Department of Animal Sciences, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Chen Raz
- Department of Animal Sciences, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Ronit Mesilati-Stahy
- School of Nutrition Science, Institute of Biochemistry, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Svetlana Penn
- School of Nutrition Science, Institute of Biochemistry, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Efrat Monsonego-Ornan
- School of Nutrition Science, Institute of Biochemistry, Hebrew University of Jerusalem, Jerusalem, Israel
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Zhao J, Dou Y, Liang G, Huang H, Hong K, Yang W, Zhou G, Sha B, Liu J, Zeng L. Global Publication Trends and Research Hotspots of the Immune System and Osteoporosis: A Bibliometric and Visualization Analysis from 2012 to 2022. Endocr Metab Immune Disord Drug Targets 2024; 24:455-467. [PMID: 37881072 DOI: 10.2174/0118715303257269231011073100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 08/10/2023] [Accepted: 09/15/2023] [Indexed: 10/27/2023]
Abstract
BACKGROUND Osteoporosis (OP) is a systemic bone metabolism disorder in which the immune system and bone metabolism interact. OBJECTIVE The purpose of this study was to explore the research status, hot spots and trends regarding the influence of the immune system on OP and to provide a basis for research directions and applications in this field. METHODS We searched and collected literature about the immune system and OP published from 2012 to 2022 in the Web of Science Core Collection database. All the included studies were subjected to bibliometrics analysis using Hiplot Pro, VOSviewer and CiteSpace software to produce statistics and visual analyses of the literature output, countries, institutions, authors, keywords and journals. RESULTS A total of 1201 papers were included, and the number of citations of these articles reached 31,776. The number of publications and citations on the immune system and OP has increased year by year. The top three countries with the greatest number of papers published were China, the United States of America (USA) and Italy. The two institutions with the largest number of papers published were Sichuan University and Soochow University, both located in China. De Martinis Massimo (Italy) and Ginaldi Lia (Italy) are prolific authors in this field. The representative academic journals are Osteoporosis International, Frontiers in Immunology, Journal of Bone and Mineral Research, PloS One and Bone. The results of the keyword cooccurrence analysis showed that the research topics in this field mainly focused on T cells, cytokines, signaling pathways, vitamin D, postmenopausal OP and immune diseases. The keyword burst results showed that zoledronic acid, chain fatty acids and gut microbiota are the frontiers and trends of future research on this topic. CONCLUSION The influence of the immune system on OP has been widely studied, and the current research in this field focuses on the effect or mechanism of immune-related cytokines, signaling pathways and vitamin D on OP. Future research trends in this field should focus on the immune regulation mechanism and clinical transformation of zoledronic acid, chain fatty acids and the gut microbiota in OP.
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Affiliation(s)
- Jinlong Zhao
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, 510120, China
- The Research Team on Bone and Joint Degeneration and Injury of Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, 510120, China
| | - Yaoxing Dou
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, 510120, China
- The Research Team on Bone and Joint Degeneration and Injury of Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, 510120, China
| | - Guihong Liang
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, 510120, China
- The Research Team on Bone and Joint Degeneration and Injury of Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, 510120, China
| | - Hetao Huang
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, 510120, China
| | - Kunhao Hong
- The Fifth Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- Guangdong Second Chinese Medicine Hospital (Guangdong Province Engineering Technology Research Institute of Traditional Chinese Medicine), Guangzhou, 510095, China
| | - Weiyi Yang
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, 510120, China
| | - Guanghui Zhou
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Bangxin Sha
- The Fifth Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Jun Liu
- The Research Team on Bone and Joint Degeneration and Injury of Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, 510120, China
- The Fifth Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- Guangdong Second Chinese Medicine Hospital (Guangdong Province Engineering Technology Research Institute of Traditional Chinese Medicine), Guangzhou, 510095, China
| | - Lingfeng Zeng
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, 510120, China
- The Research Team on Bone and Joint Degeneration and Injury of Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, 510120, China
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Kim JY, Song HJ, Cheon S, An S, Lee CS, Kim SH. Comparison of three different lactic acid bacteria-fermented proteins on RAW 264.7 osteoclast and MC3T3-E1 osteoblast differentiation. Sci Rep 2023; 13:21575. [PMID: 38062113 PMCID: PMC10703878 DOI: 10.1038/s41598-023-49024-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 12/03/2023] [Indexed: 12/18/2023] Open
Abstract
Osteoporosis is a state of bone weakening caused by an imbalance in osteoblast and osteoclast activity. In this study, the anti-osteoporotic effects of three proteins fermented by lactic acid bacteria (LAB) were assessed. Commercial proteins sodium caseinate (SC), whey protein isolate (WPI), and soy protein isolate (SPI) were fermented by LAB strains for 48 h. The fermented products (F-SC, F-WPI, and F-SPI, respectively) were used in an in vitro osteoclast and osteoblast-like cell model to assess their effects on bone health. Despite no difference in the results of TRAP staining of RANKL-induced osteoclastogenesis, F-WPI and F-SPI were effective in normalizing the altered gene expression of osteoclastogenesis markers such as TRAP, Nfatc1, RANK, and ATP6v0d. F-SPI was also effective in modulating osteoblasts by enhancing the expression of the osteoblastogenesis markers T1Col, Col2a, and OSX to levels higher than those in the SPI group, indicating that protein characteristics could be enhanced through bacterial fermentation. Moreover, these boosted effects of F-SPI may be involved with isoflavone-related metabolism during LAB-fermentation of SPI. These results demonstrate the potential of LAB-fermented proteins as dietary supplements to prevent bone loss. However, further understanding of its effects on balancing osteoblasts and osteoclasts and the underlying mechanisms is needed.
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Affiliation(s)
- Jae-Young Kim
- College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea
- Institute of Life Science and Natural Resources, Korea University, Seoul, 02841, Republic of Korea
| | - Hyun Ji Song
- College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea
| | - Sejin Cheon
- College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea
| | - Seokyoung An
- College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea
| | - Chul Sang Lee
- College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea
- Institute of Life Science and Natural Resources, Korea University, Seoul, 02841, Republic of Korea
| | - Sae Hun Kim
- College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea.
- Institute of Life Science and Natural Resources, Korea University, Seoul, 02841, Republic of Korea.
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Zeng SY, Liu YF, Liu JH, Zeng ZL, Xie H, Liu JH. Potential Effects of Akkermansia Muciniphila in Aging and Aging-Related Diseases: Current Evidence and Perspectives. Aging Dis 2023; 14:2015-2027. [PMID: 37199577 PMCID: PMC10676789 DOI: 10.14336/ad.2023.0325] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 03/25/2023] [Indexed: 05/19/2023] Open
Abstract
Akkermansia muciniphila (A. muciniphila) is an anaerobic bacterium that widely colonizes the mucus layer of the human and animal gut. The role of this symbiotic bacterium in host metabolism, inflammation, and cancer immunotherapy has been extensively investigated over the past 20 years. Recently, a growing number of studies have revealed a link between A. muciniphila, and aging and aging-related diseases (ARDs). Research in this area is gradually shifting from correlation analysis to exploration of causal relationships. Here, we systematically reviewed the association of A. muciniphila with aging and ARDs (including vascular degeneration, neurodegenerative diseases, osteoporosis, chronic kidney disease, and type 2 diabetes). Furthermore, we summarize the potential mechanisms of action of A. muciniphila and offer perspectives for future studies.
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Affiliation(s)
- Shi-Yu Zeng
- Department of Metabolism and Endocrinology, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, Hunan, China.
| | - Yi-Fu Liu
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi, China.
| | - Jiang-Hua Liu
- Department of Orthopedics, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, Hunan, China.
| | - Zhao-Lin Zeng
- Department of Metabolism and Endocrinology, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, Hunan, China.
| | - Hui Xie
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China.
- Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China.
| | - Jiang-Hua Liu
- Department of Metabolism and Endocrinology, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, Hunan, China.
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Xiao X, Cui Y, Lu H, Wang J, Yang J, Liu L, Liu Z, Peng X, Cao H, Liu X, Wei X. Strontium ranelate enriched Ruminococcus albus in the gut microbiome of Sprague-Dawley rats with postmenopausal osteoporosis. BMC Microbiol 2023; 23:365. [PMID: 38008735 PMCID: PMC10680188 DOI: 10.1186/s12866-023-03109-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 11/03/2023] [Indexed: 11/28/2023] Open
Abstract
BACKGROUND Gut microbiome is critical to our human health and is related to postmenopausal osteoporosis (PMO). Strontium ranelate (SrR) is an anti-osteoporosis oral drug that can promote osteoblast formation and inhibit osteoclast formation. However, the effect of SrR on gut microbiome has been rarely studied. Therefore, we investigated the effect of oral SrR on gut microbiome and metabolic profiles. RESULTS In this study, we used ovariectomized (OVX) Sprague-Dawley rats to construct a PMO model and applied oral SrR for 6 weeks. The relative abundance of intestinal microbiome was investigated by 16S rRNA metagenomic sequencing. Ultra-high-performance liquid chromatography-mass spectrometry (UHPLC-MS) was used to analyze changes in metabolites of intestinal contents. Results demonstrated that 6-week oral SrR alleviated osteoporosis and significantly changed the composition of the gut microbiome and metabolic profiles of OVX rats. Ruminococcus, Akkermansia and Oscillospira were significantly enriched in the gut of OVX rats after 6-week oral SrR. Especially, the species R. albus showed the greatest importance by a random forest classifier between OVX and OVX_Sr group. The enrichment of R. albus in the gut was positively correlated with bone mineral density and the accumulation of lycopene and glutaric acid, which also significantly elevated after oral SrR. CONCLUSIONS We discovered that oral SrR can improve bone health while stimulate the accumulation of gut microbe R. albus and metabolites (lycopene and glutaric acid). The results suggested possible connections between oral SrR and the gut-bone axis, which may provide new insight into the treatment/prevention of osteoporosis.
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Affiliation(s)
- Xiao Xiao
- School of Basic Medicine, Hubei University of Medicine, Shiyan, Hubei, PR China
| | - Yuanyuan Cui
- School of Basic Medicine, Hubei University of Medicine, Shiyan, Hubei, PR China
| | - Huigai Lu
- School of Basic Medicine, Hubei University of Medicine, Shiyan, Hubei, PR China
| | - Jiaqi Wang
- School of Basic Medicine, Hubei University of Medicine, Shiyan, Hubei, PR China
| | - Jing Yang
- School of Basic Medicine, Hubei University of Medicine, Shiyan, Hubei, PR China
| | - Long Liu
- School of Basic Medicine, Hubei University of Medicine, Shiyan, Hubei, PR China
| | - Zhixin Liu
- School of Basic Medicine, Hubei University of Medicine, Shiyan, Hubei, PR China
| | - Xiaohong Peng
- Key Laboratory of Pathogenic Biology, Guilin Medical University, Guilin, Guangxi, PR China
| | - Hong Cao
- Department of Orthopedics, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, PR China
| | - Xinghui Liu
- School of Basic Medicine, Hubei University of Medicine, Shiyan, Hubei, PR China.
| | - Xiuli Wei
- School of Basic Medicine, Hubei University of Medicine, Shiyan, Hubei, PR China.
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8
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Han X, Fu Y, Wang K, Li S, Jiang C, Wang S, Wang Z, Liu G, Hu S. Epigallocatechin gallate alleviates osteoporosis by regulating the gut microbiota and serum metabolites in rats. Food Funct 2023; 14:10564-10580. [PMID: 37953732 DOI: 10.1039/d3fo03233g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
Osteoporosis, one of the serious public health problems worldwide, can lead to degeneration of the bone structure and increased risk of fractures. Epigallocatechin gallate (EGCG) is a natural product with potential efficacy in inhibiting bone loss. However, the specific mechanism remains unclear. This study first investigated the role of EGCG in preventing dexamethasone (DEX)-induced osteoporosis by regulating intestinal microbiota and serum metabolites. We detected the bone density, bone microstructure, and changes in intestinal microorganisms and serum metabolites. According to our results, EGCG inhibited the decline of bone density, protected the bone microstructure, increased microbial diversity, promoted the abundance of beneficial bacteria such as Prevotellaceae and Ruminococcus, and inhibited the abundance of pathogenic bacteria such as Peptostreptococcaceae. There were also significant changes in serum metabolites among different treatments. Differential metabolites were mainly involved in sphingolipid metabolism and glycerophospholipid metabolism pathways, especially ceramide (d18:0/16:0(2OH)), phosphatidylserine (P-20:0/20:4(5Z,8Z,11Z,14Z)), phosphatidylserine (18:2(9Z,12Z)/12:0), and phosphatidylethanolamine (O-16:0/0:00), which were increased after EGCG treatment. Notably, most of the above metabolites were positively correlated with bone mineral density, BV/TV and Tb·Th, and negatively correlated with Tb·Sp. In summary, EGCG can prevent bone damage, promote the production of beneficial bacteria and metabolites, and enhance immune function. This study provides a basis and reference for the prevention and treatment of osteoporosis, as well as the application of EGCG in maintaining body health.
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Affiliation(s)
- Xuebing Han
- The Orthopaedic Center, The Affiliated Wenling Hospital of Wenzhou Medical University (The First People's Hospital of Wenling), Wenling 317500, Zhejiang Province, China.
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, Hunan 410128, PR China
- Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine, Production, Changsha 410128, PR China
| | - Yifeng Fu
- The Orthopaedic Center, The Affiliated Wenling Hospital of Wenzhou Medical University (The First People's Hospital of Wenling), Wenling 317500, Zhejiang Province, China.
| | - Keyu Wang
- The Orthopaedic Center, The Affiliated Wenling Hospital of Wenzhou Medical University (The First People's Hospital of Wenling), Wenling 317500, Zhejiang Province, China.
| | - Siying Li
- The Orthopaedic Center, The Affiliated Wenling Hospital of Wenzhou Medical University (The First People's Hospital of Wenling), Wenling 317500, Zhejiang Province, China.
| | - Chang Jiang
- The Orthopaedic Center, The Affiliated Wenling Hospital of Wenzhou Medical University (The First People's Hospital of Wenling), Wenling 317500, Zhejiang Province, China.
| | - Shuangshuang Wang
- Department of Cardiology, The Affiliated Wenling Hospital of Wenzhou Medical University (The First People's Hospital of Wenling), Wenling 317500, Zhejiang Province, China
- Key Laboratory of Precision Medicine for Atherosclerotic Diseases of Zhejiang Province, Affiliated First Hospital of Ningbo University, Ningbo 315010, China
| | - Zheng Wang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, Hunan 410128, PR China
- Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine, Production, Changsha 410128, PR China
| | - Gang Liu
- The Orthopaedic Center, The Affiliated Wenling Hospital of Wenzhou Medical University (The First People's Hospital of Wenling), Wenling 317500, Zhejiang Province, China.
| | - Siwang Hu
- The Orthopaedic Center, The Affiliated Wenling Hospital of Wenzhou Medical University (The First People's Hospital of Wenling), Wenling 317500, Zhejiang Province, China.
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