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Peng R, Song C, Gou S, Liu H, Kang H, Dong Y, Xu Y, Hu P, Cai K, Feng Q, Guan H, Li F. Gut Clostridium sporogenes-derived indole propionic acid suppresses osteoclast formation by activating pregnane X receptor. Pharmacol Res 2024; 202:107121. [PMID: 38431091 DOI: 10.1016/j.phrs.2024.107121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 02/24/2024] [Accepted: 02/26/2024] [Indexed: 03/05/2024]
Abstract
Bone homeostasis is maintained by osteoclast-mediated bone resorption and osteoblast-mediated bone formation. A dramatic decrease in estrogen levels in postmenopausal women leads to osteoclast overactivation, impaired bone homeostasis, and subsequent bone loss. Changes in the gut microbiome affect bone mineral density. However, the role of the gut microbiome in estrogen deficiency-induced bone loss and its underlying mechanism remain unknown. In this study, we found that the abundance of Clostridium sporogenes (C. spor.) and its derived metabolite, indole propionic acid (IPA), were decreased in ovariectomized (OVX) mice. In vitro assays suggested that IPA suppressed osteoclast differentiation and function. At the molecular level, IPA suppressed receptor activator of nuclear factor kappa-Β ligand (RANKL)-induced pregnane X receptor (PXR) ubiquitination and degradation, leading to increased binding of remaining PXR with P65. In vivo daily IPA administration or repeated C. spor. colonization protected against OVX-induced bone loss. To protect live bacteria from the harsh gastric environment and delay the emptying of orally administered C. spor. from the intestine, a C. spor.-encapsulated silk fibroin (SF) hydrogel system was developed, which achieved bone protection in OVX mice comparable to that achieved with repeated germ transplantation or daily IPA administration. Overall, we found that gut C. spor.-derived IPA was involved in estrogen deficiency-induced osteoclast overactivation by regulating the PXR/P65 complex. The C. spor.-encapsulated SF hydrogel system is a promising tool for combating postmenopausal osteoporosis without the disadvantages of repeated germ transplantation.
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Affiliation(s)
- Renpeng Peng
- Department of Orthopedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chao Song
- Department of Orthopedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shuangquan Gou
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, China
| | - Haiyang Liu
- Department of Orthopedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Honglei Kang
- Department of Orthopedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yimin Dong
- Department of Orthopedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yong Xu
- Department of Orthopedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Peixuan Hu
- Department of Orthopedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kaiyong Cai
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, China
| | - Qian Feng
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, China.
| | - Hanfeng Guan
- Department of Orthopedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Feng Li
- Department of Orthopedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Rahunen R, Tulppo M, Rinne V, Lepojärvi S, Perkiömäki JS, Huikuri HV, Ukkola O, Junttila J, Hukkanen J. Liver X Receptor Agonist 4β-Hydroxycholesterol as a Prognostic Factor in Coronary Artery Disease. J Am Heart Assoc 2024; 13:e031824. [PMID: 38390795 PMCID: PMC10944077 DOI: 10.1161/jaha.123.031824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 01/05/2024] [Indexed: 02/24/2024]
Abstract
BACKGROUND Regardless of progress in treatment of coronary artery disease (CAD), there is still a significant residual risk of death in patients with CAD, highlighting the need for additional risk stratification markers. Our previous study provided evidence for a novel blood pressure-regulating mechanism involving 4β-hydroxycholesterol (4βHC), an agonist for liver X receptors, as a hypotensive factor. The aim was to determine the role of 4βHC as a prognostic factor in CAD. METHODS AND RESULTS The ARTEMIS (Innovation to Reduce Cardiovascular Complications of Diabetes at the Intersection) cohort consists of 1946 patients with CAD. Men and women were analyzed separately in quartiles according to plasma 4βHC. Basic characteristics, medications, ECG, and echocardiography parameters as well as mortality rate were analyzed. At baseline, subjects with a beneficial cardiovascular profile, as assessed with traditional markers such as body mass index, exercise capacity, prevalence of diabetes, and use of antihypertensives, had the highest plasma 4βHC concentrations. However, in men, high plasma 4βHC was associated with all-cause death, cardiac death, and especially sudden cardiac death (SCD) in a median follow-up of 8.8 years. Univariate and comprehensively adjusted hazard ratios for SCD in the highest quartile were 3.76 (95% CI, 1.6-8.7; P=0.002) and 4.18 (95% CI, 1.5-11.4; P=0.005), respectively. In contrast, the association of cardiac death and SCD in women showed the lowest risk in the highest 4βHC quartile. CONCLUSIONS High plasma 4βHC concentration was associated with death and especially SCD in men, while an inverse association was detected in women. Our results suggest 4βHC as a novel sex-specific risk marker of cardiac death and especially SCD in chronic CAD. REGISTRATION INFORMATION clinicaltrials.gov. Identifier NCT01426685.
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Affiliation(s)
- Roosa Rahunen
- Research Unit of Biomedicine and Internal MedicineUniversity of OuluOuluFinland
- Biocenter OuluUniversity of OuluOuluFinland
- Medical Research Center OuluOulu University Hospital and University of OuluOuluFinland
| | - Mikko Tulppo
- Research Unit of Biomedicine and Internal MedicineUniversity of OuluOuluFinland
- Medical Research Center OuluOulu University Hospital and University of OuluOuluFinland
| | | | - Samuli Lepojärvi
- Research Unit of Biomedicine and Internal MedicineUniversity of OuluOuluFinland
- Medical Research Center OuluOulu University Hospital and University of OuluOuluFinland
| | - Juha S. Perkiömäki
- Research Unit of Biomedicine and Internal MedicineUniversity of OuluOuluFinland
- Medical Research Center OuluOulu University Hospital and University of OuluOuluFinland
| | - Heikki V. Huikuri
- Research Unit of Biomedicine and Internal MedicineUniversity of OuluOuluFinland
- Medical Research Center OuluOulu University Hospital and University of OuluOuluFinland
| | - Olavi Ukkola
- Research Unit of Biomedicine and Internal MedicineUniversity of OuluOuluFinland
- Medical Research Center OuluOulu University Hospital and University of OuluOuluFinland
| | - Juhani Junttila
- Research Unit of Biomedicine and Internal MedicineUniversity of OuluOuluFinland
- Biocenter OuluUniversity of OuluOuluFinland
- Medical Research Center OuluOulu University Hospital and University of OuluOuluFinland
| | - Janne Hukkanen
- Research Unit of Biomedicine and Internal MedicineUniversity of OuluOuluFinland
- Biocenter OuluUniversity of OuluOuluFinland
- Medical Research Center OuluOulu University Hospital and University of OuluOuluFinland
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Liang Y, Gong Y, Jiang Q, Yu Y, Zhang J. Environmental endocrine disruptors and pregnane X receptor action: A review. Food Chem Toxicol 2023; 179:113976. [PMID: 37532173 DOI: 10.1016/j.fct.2023.113976] [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: 04/25/2023] [Revised: 07/11/2023] [Accepted: 07/28/2023] [Indexed: 08/04/2023]
Abstract
The pregnane X receptor (PXR) is a kind of orphan nuclear receptor activated by a series of ligands. Environmental endocrine disruptors (EEDs) are a wide class of molecules present in the environment that are suspected to have adverse effects on the endocrine system by interfering with the synthesis, transport, degradation, or action of endogenous hormones. Since EEDs may modulate human/rodent PXR, this review aims to summarize EEDs as PXR modulators, including agonists and antagonists. The modular structure of PXR is also described, interestingly, the pharmacology of PXR have been confirmed to vary among different species. Furthermore, PXR play a key role in the regulation of endocrine function. Endocrine disruption of EEDs via PXR and its related pathways are systematically summarized. In brief, this review may provide a way to understand the roles of EEDs in interaction with the nuclear receptors (such as PXR) and the related pathways.
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Affiliation(s)
- Yuan Liang
- College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Yiyao Gong
- College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Qiuyan Jiang
- College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Yifan Yu
- College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Jie Zhang
- College of Food Science and Engineering, Jilin University, Changchun, 130062, China.
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Shimoda T, Shimizu H, Iwasaki W, Liu H, Kamo Y, Tada K, Hanai T, Hori S, Joe GH, Tanaka Y, Sato M, Miyazaki H, Ishizuka S. A diet supplemented with cholic acid elevates blood pressure accompanied by albuminuria in rats. Biosci Biotechnol Biochem 2023; 87:434-441. [PMID: 36623851 DOI: 10.1093/bbb/zbad004] [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: 11/22/2022] [Accepted: 01/05/2023] [Indexed: 01/11/2023]
Abstract
A diet supplemented with cholic acid (CA), the primary 12α-hydroxylated bile acid, can induce hepatic lipid accumulation in rats without obesity. This study examined the effects of a CA-supplemented diet on blood pressure (BP). After acclimation, WKAH/HkmSlc rats (3 weeks old) were divided into two groups and fed with a control AIN-93-based diet or a CA-supplemented diet (0.5 g CA/kg) for 13 weeks. The CA diet increased systolic and diastolic BP as well as hepatic lipid concentrations in the rats. No changes were found in the blood sodium concentration. Urinary albumin concentration increased in CA-fed rats. An increase was observed in the hepatic expression of ATP-binding cassette subfamily B member 1B that correlated BPs and urinary albumin concentration accompanied by an increase in portal taurocholic acid concentration. These results suggest that 12α-hydroxylated bile acids are involved in increased BP and albuminuria via alteration of hepatic function.
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Affiliation(s)
- Tomoko Shimoda
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Hidehisa Shimizu
- Institute of Agricultural and Life Sciences, Academic Assembly, Shimane University, Matsue, Japan
| | - Wakana Iwasaki
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Hongxia Liu
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Yoshie Kamo
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Koji Tada
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Taketo Hanai
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Shota Hori
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Ga-Hyun Joe
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
- Research Faculty of Fisheries, Hokkaido University, Hakodate, Japan
| | - Yasutake Tanaka
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
- Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| | - Masao Sato
- Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| | - Hitoshi Miyazaki
- Graduate School of Life and Environment Sciences, University of Tsukuba, Tsukuba, Japan
| | - Satoshi Ishizuka
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
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Tolonen H, Ranta S, Hämäläinen E, Kauppinen R, Hukkanen J. Effects of rifampicin on porphyrin metabolism in healthy volunteers. Basic Clin Pharmacol Toxicol 2023; 132:281-291. [PMID: 36535687 DOI: 10.1111/bcpt.13826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 11/28/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022]
Abstract
Pregnane X receptor (PXR) is known to stimulate haem synthesis, but detailed knowledge on the effects of PXR activation on porphyrin metabolism in humans is lacking. We utilized a randomized, crossover, open (blinded laboratory) and placebo-controlled trial with 600-mg rifampicin or placebo dosed for a week to investigate the effects of PXR activation on erythrocyte, plasma, faecal and urine porphyrins. Sixteen healthy volunteers participated on the trial, but the number of volunteers for blood and urine porphyrin analyses was 15 while the number of samples for faecal analyses was 14. Rifampicin increased urine pentaporphyrin concentration 3.7-fold (mean 1.80 ± 0.6 vs. 6.73 ± 4.4 nmol/L, p = 0.003) in comparison with placebo. Urine coproporphyrin I increased 23% (p = 0.036). Faecal protoporphyrin IX decreased (mean 31.6 ± 23.5 vs. 19.2 ± 27.8 nmol/g, p = 0.023). The number of blood erythrocytes was slightly elevated, and plasma bilirubin, catabolic metabolite of haem, was decreased. In conclusion, rifampicin dosing elevated the excretion of certain urinary porphyrin metabolites and decreased faecal protoporphyrin IX excretion. As urine pentaporphyrin and coproporphyrin I are not precursors in haem biosynthesis, increased excretion may serve as a hepatoprotective shunt when haem synthesis or porphyrin levels are increased.
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Affiliation(s)
- Hanna Tolonen
- Research Unit of Internal Medicine, University of Oulu, Oulu, Finland.,Biocenter Oulu, University of Oulu, Oulu, Finland.,Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Sirpa Ranta
- Clinical Chemistry, HUS Diagnostic Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Esa Hämäläinen
- School of Medicine, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Raili Kauppinen
- Clinical Chemistry, HUS Diagnostic Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Janne Hukkanen
- Research Unit of Internal Medicine, University of Oulu, Oulu, Finland.,Biocenter Oulu, University of Oulu, Oulu, Finland.,Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
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Dvořák Z, Li H, Mani S. Microbial Metabolites as Ligands to Xenobiotic Receptors: Chemical Mimicry as Potential Drugs of the Future. Drug Metab Dispos 2023; 51:219-227. [PMID: 36184080 PMCID: PMC9900867 DOI: 10.1124/dmd.122.000860] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 08/28/2022] [Accepted: 09/19/2022] [Indexed: 01/31/2023] Open
Abstract
Xenobiotic receptors, such as the pregnane X receptor, regulate multiple host physiologic pathways including xenobiotic metabolism, certain aspects of cellular metabolism, and innate immunity. These ligand-dependent nuclear factors regulate gene expression via genomic recognition of specific promoters and transcriptional activation of the gene. Natural or endogenous ligands are not commonly associated with this class of receptors; however, since these receptors are expressed in a cell-type specific manner in the liver and intestines, there has been significant recent effort to characterize microbially derived metabolites as ligands for these receptors. In general, these metabolites are thought to be weak micromolar affinity ligands. This journal anniversary minireview focuses on recent efforts to derive potentially nontoxic microbial metabolite chemical mimics that could one day be developed as drugs combating xenobiotic receptor-modifying pathophysiology. The review will include our perspective on the field and recommend certain directions for future research. SIGNIFICANCE STATEMENT: Xenobiotic receptors (XRs) regulate host drug metabolism, cellular metabolism, and immunity. Their presence in host intestines allows them to function not only as xenosensors but also as a response to the complex metabolic environment present in the intestines. Specifically, this review focuses on describing microbial metabolite-XR interactions and the translation of these findings toward discovery of novel chemical mimics as potential drugs of the future for diseases such as inflammatory bowel disease.
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Affiliation(s)
- Zdeněk Dvořák
- Department of Cell Biology and Genetics, Palacký University, Olomouc, Czech Republic (Z.D.); Departments of Medicine (H.L., S.M.), Molecular Pharmacology (S.M.), and Genetics (S.M.), Albert Einstein College of Medicine, Bronx, New York, USA
| | - Hao Li
- Department of Cell Biology and Genetics, Palacký University, Olomouc, Czech Republic (Z.D.); Departments of Medicine (H.L., S.M.), Molecular Pharmacology (S.M.), and Genetics (S.M.), Albert Einstein College of Medicine, Bronx, New York, USA
| | - Sridhar Mani
- Department of Cell Biology and Genetics, Palacký University, Olomouc, Czech Republic (Z.D.); Departments of Medicine (H.L., S.M.), Molecular Pharmacology (S.M.), and Genetics (S.M.), Albert Einstein College of Medicine, Bronx, New York, USA
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