1
|
Zhao T, Zhong G, Wang Y, Cao R, Song S, Li Y, Wan G, Sun H, Huang M, Bi H, Jiang Y. Pregnane X Receptor Activation in Liver Macrophages Protects against Endotoxin-Induced Liver Injury. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2308771. [PMID: 38477509 PMCID: PMC11109625 DOI: 10.1002/advs.202308771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 02/24/2024] [Indexed: 03/14/2024]
Abstract
Endotoxemia-related acute liver injury has a poor prognosis and high mortality, and macrophage polarization plays a central role in the pathological process. Pregnane X receptor (PXR) serves as a nuclear receptor and xenosensor, safeguarding the liver from toxic stimuli. However, the effect and underlying mechanism of PXR activation on endotoxemic liver injury remain largely unknown. Here, the expression of PXR is reported in human and murine macrophages, and PXR activation modified immunotypes of macrophages. Moreover, PXR activation significantly attenuated endotoxemic liver injury and promoted macrophage M2 polarization. Macrophage depletion by GdCl3 confirmed the essential of macrophages in the beneficial effects observed with PXR activation. The role of PXR in macrophages is further validated using AAV8-F4/80-Pxr shRNA-treated mice; the PXR-mediated hepatoprotection is impaired, and M2 polarization enhancement is blunted. Additionally, treatment with PXR agonists inhibited lipopolysaccharide (LPS)-induced M1 polarization and favored M2 polarization in BMDM, Raw264.7, and THP-1 cells. Further analyses revealed an interaction between PXR and p-STAT6 in vivo and in vitro. Moreover, blocking Pxr or Stat6 abolished the PXR-induced polarization shift. Collectively, macrophage PXR activation attenuated endotoxin-induced liver injury and regulated macrophage polarization through the STAT6 signaling pathway, which provided a potential therapeutic target for managing endotoxemic liver injury.
Collapse
Affiliation(s)
- Tingting Zhao
- Guangdong Provincial Key Laboratory of New Drug Design and EvaluationSchool of Pharmaceutical SciencesSun Yat‐Sen UniversityGuangzhou510006China
- Institute of Clinical PharmacologySun Yat‐Sen UniversityGuangzhou510006China
| | - Guoping Zhong
- Guangdong Provincial Key Laboratory of New Drug Design and EvaluationSchool of Pharmaceutical SciencesSun Yat‐Sen UniversityGuangzhou510006China
- Institute of Clinical PharmacologySun Yat‐Sen UniversityGuangzhou510006China
| | - Ying Wang
- Sun Yat‐Sen Memorial HospitalSun Yat‐Sen UniversityGuangzhou510006China
| | - Renjie Cao
- Guangdong Provincial Key Laboratory of New Drug Design and EvaluationSchool of Pharmaceutical SciencesSun Yat‐Sen UniversityGuangzhou510006China
- Institute of Clinical PharmacologySun Yat‐Sen UniversityGuangzhou510006China
| | - Shaofei Song
- Guangdong Provincial Key Laboratory of New Drug Design and EvaluationSchool of Pharmaceutical SciencesSun Yat‐Sen UniversityGuangzhou510006China
- Institute of Clinical PharmacologySun Yat‐Sen UniversityGuangzhou510006China
| | - Yuan Li
- Guangdong Provincial Key Laboratory of New Drug Design and EvaluationSchool of Pharmaceutical SciencesSun Yat‐Sen UniversityGuangzhou510006China
- Institute of Clinical PharmacologySun Yat‐Sen UniversityGuangzhou510006China
| | - Guohui Wan
- Guangdong Provincial Key Laboratory of New Drug Design and EvaluationSchool of Pharmaceutical SciencesSun Yat‐Sen UniversityGuangzhou510006China
- Institute of Clinical PharmacologySun Yat‐Sen UniversityGuangzhou510006China
| | - Haiyan Sun
- School of Food and DrugShenzhen Polytechnic UniversityShenzhen518055China
| | - Min Huang
- Guangdong Provincial Key Laboratory of New Drug Design and EvaluationSchool of Pharmaceutical SciencesSun Yat‐Sen UniversityGuangzhou510006China
- Institute of Clinical PharmacologySun Yat‐Sen UniversityGuangzhou510006China
| | - Huichang Bi
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug ScreeningSchool of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou510006China
| | - Yiming Jiang
- Guangdong Provincial Key Laboratory of New Drug Design and EvaluationSchool of Pharmaceutical SciencesSun Yat‐Sen UniversityGuangzhou510006China
- Institute of Clinical PharmacologySun Yat‐Sen UniversityGuangzhou510006China
| |
Collapse
|
2
|
Lan H, Zhang Y, Fan M, Wu B, Wang C. Pregnane X receptor as a therapeutic target for cholestatic liver injury. Drug Metab Rev 2023; 55:371-387. [PMID: 37593784 DOI: 10.1080/03602532.2023.2248680] [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: 05/11/2023] [Accepted: 08/02/2023] [Indexed: 08/19/2023]
Abstract
Cholestatic liver injury (CLI) is caused by toxic bile acids (BAs) accumulation in the liver and can lead to inflammation and liver fibrosis. The mechanisms underlying CLI development remain unclear, and this disease has no effective cure. However, regulating BA synthesis and homeostasis represents a promising therapeutic strategy for CLI treatment. Pregnane X receptor (PXR) plays an essential role in the metabolism of endobiotics and xenobiotics via the transcription of metabolic enzymes and transporters, which can ultimately modulate BA homeostasis and exert anticholestatic effects. Furthermore, recent studies have demonstrated that PXR exhibits antifibrotic and anti-inflammatory properties, providing novel insights into treating CLI. Meanwhile, several drugs have been identified as PXR agonists that improve CLI. Nevertheless, the precise role of PXR in CLI still needs to be fully understood. This review summarizes how PXR improves CLI by ameliorating cholestasis, inhibiting inflammation, and reducing fibrosis and discusses the progress of promising PXR agonists for treating CLI.
Collapse
Affiliation(s)
- Huan Lan
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, P.R. China
| | - Ying Zhang
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, P.R. China
| | - Minqi Fan
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, P.R. China
| | - Bingxin Wu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, P.R. China
| | - Caiyan Wang
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, P.R. China
| |
Collapse
|
3
|
Zheng C, Zhong Y, Zhang W, Wang Z, Xiao H, Zhang W, Xie J, Peng X, Luo J, Xu W. Chlorogenic Acid Ameliorates Post-Infectious Irritable Bowel Syndrome by Regulating Extracellular Vesicles of Gut Microbes. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2302798. [PMID: 37616338 PMCID: PMC10558682 DOI: 10.1002/advs.202302798] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 08/01/2023] [Indexed: 08/26/2023]
Abstract
Post-infectious irritable bowel syndrome (PI-IBS) occurs after acute infectious diarrhea, and dysbiosis can be involved in its pathogenesis. Here, the role of chlorogenic acid (CGA) is investigated, a natural compound with several pharmacological properties, in alleviating PI-IBS in rats. It is elucidated that the gut microbiota plays a key role in PI-IBS pathogenesis and that rectal administration of CGA alleviated PI-IBS by modulating the gut microbiota and its metabolites. CGA supplementation significantly increased fecal Bacteroides acidifaciens abundance and glycine levels. Glycine structurally altered B. acidifaciens extracellular vesicles (EVs) and enriched functional proteins in the EVs; glycine-induced EVs alleviated PI-IBS by reducing inflammation and hypersensitivity of the intestinal viscera and maintaining mucosal barrier function. Moreover, B. acidifaciens EVs are enriched in the brain tissue. Thus, CGA mediates the mitigation of PI-IBS through the gut microbiota and its metabolites. This study proposes a novel mechanism of signal exchange between the gut microenvironment and the host.
Collapse
Affiliation(s)
- Cihua Zheng
- Department of General SurgeryThe Second Affiliated Hospital of Nanchang University1 Minde RoadNanchangJiangxi330006P. R. China
- Department of Rehabilitation MedicineThe Second Affiliated Hospital of Nanchang University1 Minde RoadNanchangJiangxi330006P. R. China
| | - Yuchun Zhong
- Department of General SurgeryThe Second Affiliated Hospital of Nanchang University1 Minde RoadNanchangJiangxi330006P. R. China
| | - Wenming Zhang
- Department of General SurgeryThe Second Affiliated Hospital of Nanchang University1 Minde RoadNanchangJiangxi330006P. R. China
| | - Zhuoya Wang
- Department of Rehabilitation MedicineThe Second Affiliated Hospital of Nanchang University1 Minde RoadNanchangJiangxi330006P. R. China
| | - Haili Xiao
- Department of Rehabilitation MedicineThe Second Affiliated Hospital of Nanchang University1 Minde RoadNanchangJiangxi330006P. R. China
| | - Wenjun Zhang
- Department of Rehabilitation MedicineThe Second Affiliated Hospital of Nanchang University1 Minde RoadNanchangJiangxi330006P. R. China
| | - Jian Xie
- Department of Rehabilitation MedicineThe Second Affiliated Hospital of Nanchang University1 Minde RoadNanchangJiangxi330006P. R. China
| | - Xiaogang Peng
- Jiangxi Province Key Laboratory of Molecular MedicineThe Second Affiliated Hospital of Nanchang UniversityNanchangJiangxi330006P. R. China
| | - Jun Luo
- Department of Rehabilitation MedicineThe Second Affiliated Hospital of Nanchang University1 Minde RoadNanchangJiangxi330006P. R. China
| | - Wei Xu
- Department of General SurgeryThe Second Affiliated Hospital of Nanchang University1 Minde RoadNanchangJiangxi330006P. R. China
| |
Collapse
|
4
|
Peng J, Li H, Olaolu OA, Ibrahim S, Ibrahim S, Wang S. Natural Products: A Dependable Source of Therapeutic Alternatives for Inflammatory Bowel Disease through Regulation of Tight Junctions. Molecules 2023; 28:6293. [PMID: 37687122 PMCID: PMC10488775 DOI: 10.3390/molecules28176293] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 08/24/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023] Open
Abstract
Inflammatory bowel disease (IBD), which includes Crohn's disease (CD) and ulcerative colitis (UC), can affect the entire gastrointestinal tract and mucosal layer and lead to intestinal damage and intestinal dysfunction. IBD is an inflammatory disease of the gastrointestinal tract that significantly impacts public health development. Monoclonal antibodies and other synthetic medications are currently used to treat IBD, but they are suspected of producing serious side effects and causing a number of other problems with long-term use. Numerous in vitro and in vivo studies have shown that organic macromolecules from plants and animals have an alleviating effect on IBD-related problems, and many of them are also capable of altering enzymatic function, reducing oxidative stress, and inhibiting the production of cytokines and release of proinflammatory transcriptional factors. Thus, in this paper, the natural products with potential anti-IBD activities and their mechanism of action were reviewed, with a focus on the protective effects of natural products on intestinal barrier integrity and the regulation of tight junction protein expression and remodeling. In conclusion, the insights provided in the present review will be useful for further exploration and development of natural products for the treatment of IBD.
Collapse
Affiliation(s)
- Jing Peng
- Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Science, Lanzhou 730050, China; (J.P.); (H.L.); (O.A.O.)
| | - Hao Li
- Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Science, Lanzhou 730050, China; (J.P.); (H.L.); (O.A.O.)
| | - Oladejo Ayodele Olaolu
- Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Science, Lanzhou 730050, China; (J.P.); (H.L.); (O.A.O.)
- Department of Animal Health Technology, Oyo State College of Agriculture and Technology Igboora Nigeria, Igboora 201003, Nigeria
| | - Saber Ibrahim
- Packaging Materials Department, National Research Centre, Giza 12111, Egypt;
- Nanomaterials Investigation Laboratory, Central Laboratory Network, National Research Centre, Giza 12111, Egypt
| | - Sally Ibrahim
- Department of Animal Reproduction and AI, Veterinary Research Institute, National Research Centre, Dokki 12622, Egypt;
| | - Shengyi Wang
- Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Science, Lanzhou 730050, China; (J.P.); (H.L.); (O.A.O.)
| |
Collapse
|
5
|
Jiang J, Zhang N, Song H, Yang Y, Li J, Hu X. Oridonin alleviates the inhibitory effect of lipopolysaccharide on the proliferation and osteogenic potential of periodontal ligament stem cells by inhibiting endoplasmic reticulum stress and NF-κB/NLRP3 inflammasome signaling. BMC Oral Health 2023; 23:137. [PMID: 36894905 PMCID: PMC9999511 DOI: 10.1186/s12903-023-02827-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 02/21/2023] [Indexed: 03/11/2023] Open
Abstract
BACKGROUND The aim of this study was to investigate the protective effect and mechanism of oridonin in an in vitro lipopolysaccharide (LPS)-induced human periodontal ligament stem cells (hPDLSCs) model of periodontitis. METHODS Primary hPDLSCs were isolated and cultured, and then the expression of surface antigens CD146, STRO-1 and CD45 of hPDLSCs was detected by flow cytometry. The mRNA expression level of Runx2, OPN, Col-1, GRP78, CHOP, ATF4 and ATF6 in the cells was tested by qRT-PCR. MTT was taken to determine the cytotoxicity of oridonin at different concentrations (0-4 μM) on hPDLSCs. Besides, ALP staining, alizarin red staining and Oil Red O staining were utilized to assess the osteogenic differentiation (ALP concentration, mineralized calcium nodule formation) and adipogenic differentiation abilities of the cells. The proinflammatory factors level in the cells was measured by ELISA. The protein expression level of NF-κB/NLRP3 pathway-related proteins and endoplasmic reticulum (ER) stress-related markers in the cells were detected by Western blot. RESULTS hPDLSCs with positive CD146 and STRO-1 expression and negative CD45 expression were successfully isolated in this study. 0.1-2 μM of oridonin had no significant cytotoxicity on the growth of hPDLSCs, while 2 μM of oridonin could not only greatly reduce the inhibitory effect of LPS on the proliferation and osteogenic differentiation of hPDLSCs cells, but also inhibit LPS-induced inflammation and ER stress in hPDLSCs cells. Moreover, further mechanism research showed that 2 μM of oridonin suppressed NF-κB/NLRP3 signaling pathway activity in LPS-induced hPDLSCs cells. CONCLUSIONS Oridonin promotes proliferation and osteogenic differentiation of LPS-induced hPDLSCs in an inflammatory environment, possibly by inhibiting ER stress and NF-κB/NLRP3 pathway. Oridonin may have a potential role in the repair and regeneration of hPDLSCs.
Collapse
Affiliation(s)
- Junhao Jiang
- Department of Stomatology, Shenzhen Longgang District Maternity & Child Healthcare Hospital(Longgang Maternity and Child Institute of Shantou University Medical College), Shenzhen, 518172, China.
| | - Nong Zhang
- Department of Stomatology, Shenzhen Longgang District Maternity & Child Healthcare Hospital(Longgang Maternity and Child Institute of Shantou University Medical College), Shenzhen, 518172, China
| | - Haibo Song
- Department of Stomatology, Shenzhen Longgang District Maternity & Child Healthcare Hospital(Longgang Maternity and Child Institute of Shantou University Medical College), Shenzhen, 518172, China
| | - Ya Yang
- Department of Stomatology, Shenzhen Longgang District Maternity & Child Healthcare Hospital(Longgang Maternity and Child Institute of Shantou University Medical College), Shenzhen, 518172, China
| | - Juan Li
- Department of Stomatology, Shenzhen Longgang District Maternity & Child Healthcare Hospital(Longgang Maternity and Child Institute of Shantou University Medical College), Shenzhen, 518172, China
| | - Xiaoli Hu
- Department of Operative Dentistry and Endodontics, Guanghua School and Hospital of Stomatology, Sun Yat-Sen University, Guangzhou, 510055, Guangdong, China.
| |
Collapse
|
6
|
Wang J, Sun Z, Xie J, Ji W, Cui Y, Ai Z, Liang G. Inflammasome and pyroptosis in autoimmune liver diseases. Front Immunol 2023; 14:1150879. [PMID: 36969233 PMCID: PMC10030845 DOI: 10.3389/fimmu.2023.1150879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 02/23/2023] [Indexed: 03/11/2023] Open
Abstract
Autoimmune hepatitis (AIH), primary biliary cholangitis (PBC), primary sclerosing cholangitis (PSC), and IgG4-related sclerosing cholangitis (IgG4-SC) are the four main forms of autoimmune liver diseases (AILDs), which are all defined by an aberrant immune system attack on the liver. Most previous studies have shown that apoptosis and necrosis are the two major modes of hepatocyte death in AILDs. Recent studies have reported that inflammasome-mediated pyroptosis is critical for the inflammatory response and severity of liver injury in AILDs. This review summarizes our present understanding of inflammasome activation and function, as well as the connections among inflammasomes, pyroptosis, and AILDs, thus highlighting the shared features across the four disease models and gaps in our knowledge. In addition, we summarize the correlation among NLRP3 inflammasome activation in the liver-gut axis, liver injury, and intestinal barrier disruption in PBC and PSC. We summarize the differences in microbial and metabolic characteristics between PSC and IgG4-SC, and highlight the uniqueness of IgG4-SC. We explore the different roles of NLRP3 in acute and chronic cholestatic liver injury, as well as the complex and controversial crosstalk between various types of cell death in AILDs. We also discuss the most up-to-date developments in inflammasome- and pyroptosis-targeted medicines for autoimmune liver disorders.
Collapse
Affiliation(s)
- Jixuan Wang
- School of First Clinical Medicine, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Zhiwen Sun
- Department of Liver, Spleen and Stomach Diseases, First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, China
| | - Jingri Xie
- Department of Liver, Spleen and Stomach Diseases, First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, China
| | - Wanli Ji
- School of First Clinical Medicine, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Yang Cui
- School of First Clinical Medicine, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Zongxiong Ai
- School of First Clinical Medicine, Heilongjiang University of Chinese Medicine, Harbin, China
- *Correspondence: Guoying Liang, ; Zongxiong Ai,
| | - Guoying Liang
- Department of Liver, Spleen and Stomach Diseases, First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, China
- *Correspondence: Guoying Liang, ; Zongxiong Ai,
| |
Collapse
|
7
|
Zhang Y, Lin Z, Wang L, Guo X, Hao Z, Li Z, Johnston LJ, Dong B. Cooperative Interaction of Phenolic Acids and Flavonoids Contained in Activated Charcoal with Herb Extracts, Involving Cholesterol, Bile Acid, and FXR/PXR Activation in Broilers Fed with Mycotoxin-Containing Diets. Antioxidants (Basel) 2022; 11:2200. [PMID: 36358572 PMCID: PMC9686537 DOI: 10.3390/antiox11112200] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 10/29/2022] [Accepted: 11/03/2022] [Indexed: 11/13/2023] Open
Abstract
The charcoal-herb extract complex (CHC) is a product of activated charcoal sorption of herb extracts that contain phenolic acids and flavonoids. The effective dose of CHC to promote animal growth is about one tenth of effective dosage of activated charcoal. The purpose of this study was to evaluate potential cooperative interactions between activated charcoal and herb extracts. Two feeding experiments were conducted. In Experiment 1, a responsive dose of CHC to broiler growth was determined to be 250 mg/kg of the diet. In Experiment 2, CHC increased growth performance and improved meat quality, but decreased indices of oxidative stress and inflammation as compared with similar doses of activated charcoal or herb extracts. CHC also increased concentrations of serum cholesterol, bile acid in the gallbladder, and bile acid in feces. The herb extracts present in CHC were largely represented by phenolic acids (PAs, caffeic acid, and vanillin) and flavonoids (FVs, daidzein, and quercetin-D-glucoside) in the detoxification activity of CHC in a mouse rescue test when the mice were gavaged with T-2 mycotoxin. PAs and FVs significantly increased the expression of CYP7A1, PXR, CYP3A37, Slco1B3, and Bsep in chicken primary hepatocytes. In conclusion, CHC integrated the cooperative interactions of activated charcoal and herb extracts via the FXR/RXR-PXR pathway to detoxify mycotoxins.
Collapse
Affiliation(s)
- Ying Zhang
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing 100193, China
| | - Zishen Lin
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing 100193, China
| | - Lixue Wang
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing 100193, China
| | - Xiangyue Guo
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing 100193, China
| | - Zhihui Hao
- Center of Research and Innovation of Chinese Traditional Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Zhen Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Lee J. Johnston
- Swine Nutrition and Production, West Central Research and Outreach Center, University of Minnesota, Morris, MN 56267, USA
| | - Bing Dong
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing 100193, China
| |
Collapse
|
8
|
Lu Q, Tan D, Luo J, Ye Y, Zuo M, Wang S, Li C. Potential of natural products in the treatment of irritable bowel syndrome. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 106:154419. [PMID: 36087525 DOI: 10.1016/j.phymed.2022.154419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/29/2022] [Accepted: 08/26/2022] [Indexed: 02/05/2023]
Abstract
BACKGROUND Irritable bowel syndrome (IBS) is a kind of functional bowel disease that is characterized by bellyache, abdominal distension, and diarrhea. Although not life-threatening, IBS has a long course and recurrent attacks and seriously affects the life quality of patients. Current drugs for treating IBS possess remarkable limitations, such as limited efficacy and severe adverse reactions. Therefore, developing novel medications to treat IBS is quite essential, and natural products may be a substantial source. PURPOSE This is the first systematic review elaborating the recent advancement of natural products as potential drugs for the therapy of IBS. METHODS A comprehensive retrieval of studies was carried out in scientific databases including PubMed, Web of Science, Elsevier, and CNKI. By using ("irritable bowel syndrome" OR "IBS") AND ("natural product" OR "natural compound" OR "phytochemical") as keywords, the eligible studies were screened, and the relevant information about therapeutic action and mechanism of natural products treating IBS was extracted. RESULTS Natural products against IBS consisted of four categories, namely, terpenoids, flavonoids, alkaloids, and phenols. Furthermore, the underlying mechanisms for natural products treating IBS were tightly associated with increased TJs and mucus protein expression, regulation of the brain-gut axis and gut microbiota structure, and inhibition of inflammatory response and intestinal mucosal damage. CONCLUSION Natural products could be extremely prospective candidate drugs used to treat IBS, and further preclinical and clinical researches are needed to guarantee their efficacy and safety.
Collapse
Affiliation(s)
- Qiang Lu
- Department of Pharmaceutical Sciences, Zunyi Medical University, Zhuhai Campus, Zhuhai 519041, PR China
| | - Daopeng Tan
- College of Pharmacy, Zunyi Medical University, Zunyi 563000, PR China
| | - Jingbin Luo
- China Traditional Chinese Medicine Holdings Company Limited, Foshan 528000, PR China
| | - Yonghao Ye
- Zhuhai Resproly Pharmaceutical Technology Company Limited, Zhuhai 519040, PR China
| | - Manhua Zuo
- Department of Nursing, Zunyi Medical University, Zhuhai Campus, Zhuhai 519041, PR China
| | - Siyu Wang
- Department of Pharmaceutical Sciences, Zunyi Medical University, Zhuhai Campus, Zhuhai 519041, PR China
| | - Cailan Li
- Department of Pharmacology, Zunyi Medical University, Zhuhai Campus, Zhuhai 519041, PR China; Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563000, PR China; Key Laboratory of Basic Pharmacology of Guizhou Province and School of Pharmacy, Zunyi Medical University, Zunyi 563000, PR China.
| |
Collapse
|
9
|
Paeoniflorin Ameliorates Colonic Fibrosis in Rats with Postinfectious Irritable Bowel Syndrome by Inhibiting the Leptin/LepRb Pathway. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:6010858. [PMID: 36225193 PMCID: PMC9550452 DOI: 10.1155/2022/6010858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 08/01/2022] [Indexed: 11/17/2022]
Abstract
Postinfectious irritable bowel syndrome (PI-IBS) is a highly prevalent gastrointestinal disorder associated with immune dysregulation and depression- and anxiety-like behaviors. Through traditional medicine, the active ingredient of Paeoniae Radix called paeoniflorin (PF) was previously found to prevent the symptoms of PI-IBS. However, there is limited information on the effects of PF on intestinal function and depression- and anxiety-like symptoms in PI-IBS animal models. Here, we aimed to determine the effects of PF treatment on the symptoms of PI-IBS in a rat model. The PI-IBS rat model was established via early postnatal sibling deprivation (EPSD), trinitrobenzenesulfonic acid (TNBS), and chronic unpredictable mild stress (CUMS) stimulation and then treated with different dosages of PF (10, 20, and 40 mg/kg) and leptin (1 and 10 mg/kg). The fecal water content and body weight were measured to evaluate the intestinal function, while the two-bottle test for sucrose intake, open field test (OFT), and elevated plus maze test (EMT) were performed to assess behavioral changes. The serum leptin levels were also measured using an enzyme-linked immunosorbent assay. Furthermore, the expressions of leptin and its receptor, LepRb, were detected in colonic mucosal tissues through an immunohistochemical assay. The activation of the PI3K/AKT signaling pathway and the expression of brain-derived neurotrophic factor (BDNF) were also detected via western blotting. After the experimental period, the PI-IBS rats presented decreased body weight and increased fecal water content, which coincided with elevated leptin levels and heightened depression- and anxiety-like behaviors (e.g., low sucrose intake, less frequency in the center areas during OFT, and fewer activities in the open arms during EMT). However, the PF treatment ameliorated these observed symptoms. Furthermore, PF not only inhibited leptin/LepRb expression but also reduced the PI3K/AKT phosphorylation and BDNF expression in PI-IBS rats. Notably, cotreatment with leptin (10 mg/kg) reduced the effects of PF (20 mg/kg) on colonic fibrosis, leptin/LepRb expression, and PI3K/AKT activation. Therefore, our findings suggest that leptin is targeted by PF via the leptin/LepRb pathway, consequently ameliorating the symptoms of PI-IBS. Our study also contributes novel insights for elucidating the pharmacological action of PF on gastrointestinal disorders and may be used for the clinical treatment of PI-IBS in the future.
Collapse
|
10
|
Liang H, Yang X, Li H, Wang X, Su H, Li X, Tian J, Cai C, Huang M, Bi H. Schisandrol B protects against cholestatic liver injury by inhibiting pyroptosis through pregnane X receptor. Biochem Pharmacol 2022; 204:115222. [PMID: 35988735 DOI: 10.1016/j.bcp.2022.115222] [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: 06/06/2022] [Revised: 08/12/2022] [Accepted: 08/12/2022] [Indexed: 11/18/2022]
Abstract
Previously, we demonstrated that Schisandrol B (SolB) protected against lithocholic acid (LCA)-induced cholestatic liver injury (CLI) through pregnane X receptor (PXR). Additionally, growing evidence has revealed that pyroptosis is involved in CLI. Whether the hepatoprotective effect of SolB driven by PXR activation is related to pyroptosis in CLI remains unclear. First, the hepatoprotective effect of SolB was confirmed, as evidenced by the decreased mortality, morphological and histopathological changes, and biochemical parameters. The upregulated serum lactic dehydrogenase (LDH) level, increased number of TUNEL-positive cells, and formation of hepatocyte membrane pores induced by LCA were significantly alleviated after SolB pretreatment, indicating that SolB attenuated LCA-induced hepatocyte damage. Further analysis revealed that both NOD-like receptor protein 3 (NLRP3) inflammasome-induced canonical pyroptosis and apoptosis protease activating factor-1 (Apaf-1) pyroptosome-induced noncanonical pyroptosis were significantly inhibited after SolB pretreatment, as illustrated by the decreased expression levels of NLRP3, ASC, caspase-1, and GSDMD and the levels of Apaf-1, caspase-11 p20, caspase-3 p20, and GSDME. Furthermore, the activation of the NF-κB and FoxO1 signaling pathways was inhibited after SolB pretreatment. In addition, the activation of PXR via SolB was proven by luciferase reporter gene assays and the upregulation of PXR targets. The results illustrated that SolB could significantly inhibit NLRP3 inflammasome-induced canonical pyroptosis through the PXR/NF-κB/NLRP3 axis and inhibit Apaf-1 pyroptosome-induced noncanonical pyroptosis through the PXR/FoxO1/Apaf-1 axis. Collectively, this study revealed that SolB protected against CLI by inhibiting pyroptosis through PXR, providing new insights for understanding the molecular mechanism of SolB as a promising anti-cholestatic agent.
Collapse
Affiliation(s)
- Hangfei Liang
- Guandong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Xiao Yang
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Huilin Li
- Guandong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Xinhui Wang
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen, China
| | - Haiguo Su
- Guandong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Xuan Li
- Guandong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Jianing Tian
- Guandong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Chenghui Cai
- Guandong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Min Huang
- Guandong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China.
| | - Huichang Bi
- Guandong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China; NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China.
| |
Collapse
|
11
|
Wang M, Xu B, Liu L, Wang D. Oridonin attenuates dextran sulfate sodium‑induced ulcerative colitis in mice via the Sirt1/NF‑κB/p53 pathway. Mol Med Rep 2022; 26:312. [PMID: 36004485 PMCID: PMC9437968 DOI: 10.3892/mmr.2022.12828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 01/27/2022] [Indexed: 11/16/2022] Open
Abstract
Ulcerative colitis (UC) is a serious chronic inflammatory bowel disease. Oridonin (Ori) has anti-inflammatory, antibacterial and antitumor activities. The current study aimed to investigate the regulatory role of Ori in UC. BALB/C mice were induced to form a model of UC using dextran sulfate sodium (DSS), after which UC mice received high-(Ori-H) and low-doses of Ori (Ori-L). Subsequently, the length of the colon was measured and hematoxylin and, eosin staining was performed to detect colonic injury. Western blot analysis was performed to detect expression level in tight junction-associated proteins in murine colon tissue. Additionally, myeloperoxidase activity and inflammatory factor concentration were detected in colon tissue using ELISA. TUNEL and western blot assays were also performed to detect cell apoptosis, and the expression level of Sirt1/NF-κB/p53 pathway-related proteins was also determined using western blot analysis. The results revealed that Ori ameliorated clinical symptoms and pathological lesions in mice with DSS-induced UC. Furthermore, Ori protected the integrity of the colonic mucosal barrier, reduced the inflammatory response and decreased oxidative stress levels in mice with DSS-induced UC. Ori treatment also inhibited intestinal mucosal cell apoptosis. These effects may have occurred via the Sirtuin-1/NF-κB/p53 pathway. In conclusion, Ori treatment inhibited DSS-induced inflammatory response, oxidative stress and intestinal mucosal apoptosis in UC mice.
Collapse
Affiliation(s)
- Maonan Wang
- General Surgery Department, Jilin Provincial People's Hospital, Changchun, Jilin 130021, P.R. China
| | - Bo Xu
- General Surgery Department, Jilin Provincial People's Hospital, Changchun, Jilin 130021, P.R. China
| | - Lintao Liu
- General Surgery Department, Jilin Provincial People's Hospital, Changchun, Jilin 130021, P.R. China
| | - Dawei Wang
- Faculty of Medicine, Beihua University, Jilin, Jilin 132013, P.R. China
| |
Collapse
|
12
|
Zhao GP, Wang XY, Li JW, Wang R, Ren FZ, Pang GF, Li YX. Imidacloprid increases intestinal permeability by disrupting tight junctions. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 222:112476. [PMID: 34214772 DOI: 10.1016/j.ecoenv.2021.112476] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 06/09/2021] [Accepted: 06/27/2021] [Indexed: 06/13/2023]
Abstract
The neonicotinoid pesticide, imidacloprid (IMI), is frequently detected in the environment and in foods. It is absorbed and metabolized by the intestine; however, its effects on intestinal barrier integrity are not well studied. We investigated whether IMI disrupts the permeability of the intestinal epithelial barrier via in vivo tests on male Wistar rats, in vitro assays using the human intestinal epithelial cell line, Caco-2, and in silico analyses. A repeated oral dose 90-day toxicity study was performed (0.06 mg/kg body weight/day). IMI exposure significantly increased intestinal permeability, which led to significantly elevated serum levels of endotoxin and inflammatory biomarkers (tumor necrosis factor-alpha and interleukin-1 beta) without any variation in body weight. Decreased transepithelial electrical resistance with increased permeability was also observed in 100 nM and 100 μM IMI-treated Caco-2 cell monolayers. Amounts of tight junction proteins in IMI-treated colon tissues and between IMI-treated Caco-2 cells were significantly lower than those of controls. Increased levels of myosin light chain phosphorylation, myosin light chain kinase (MLCK), and p65 subunit of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB p65) phosphorylation were found in IMI-exposed cells compared with control cells. Furthermore, the barrier loss caused by IMI was rescued by the MLCK inhibitor, ML-7, and cycloheximide. Pregnane X receptor (PXR, NR1I2) was inhibited by low-dose IMI treatment. In silico analysis indicated potent binding sites between PXR and IMI. Together, these data illustrate that IMI induces intestinal epithelial barrier disruption and produces an inflammatory response, involving the down-regulation of tight junctions and disturbance of the PXR-NF-κB p65-MLCK signaling pathway. The intestinal barrier disruption caused by IMI deserves attention in assessing the safety of this neonicotinoid pesticide.
Collapse
Affiliation(s)
- Guo-Ping Zhao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100083, China
| | - Xiao-Yu Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100083, China
| | - Jin-Wang Li
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, China
| | - Ran Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100083, China
| | - Fa-Zheng Ren
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100083, China
| | - Guo-Fang Pang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100083, China; Chinese Academy of Inspection and Quarantine, Beijing 100176, China
| | - Yi-Xuan Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100083, China.
| |
Collapse
|
13
|
Lu Q, Jiang C, Hou J, Qian H, Chu F, Zhang W, Ye M, Chen Z, Liu J, Yao H, Zhang J, Xu J, Wang T, Fan S, Wang Q. Patchouli Alcohol Modulates the Pregnancy X Receptor/Toll-like Receptor 4/Nuclear Factor Kappa B Axis to Suppress Osteoclastogenesis. Front Pharmacol 2021; 12:684976. [PMID: 34177594 PMCID: PMC8227438 DOI: 10.3389/fphar.2021.684976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/17/2021] [Indexed: 11/23/2022] Open
Abstract
The incidence of osteoporosis, which is primarily characterized by plethoric osteoclast (OC) formation and severe bone loss, has increased in recent years. Millions of people worldwide, especially postmenopausal women, suffer from osteoporosis. The drugs commonly used to treat osteoporosis still exist many disadvantages, but natural extracts provide options for the treatment of osteoporosis. Therefore, the identification of cost-effective natural compounds is important. Patchouli alcohol (PA), a natural compound extracted from Pogostemon cablin that exerts anti-inflammatory effects, is used as a treatment for gastroenteritis. However, no research on the use of Patchouli alcohol in osteoporosis has been reported. We found that PA dose-dependently inhibited the receptor activator of nuclear factor kappa-B ligand (RANKL)-induced formation and function of OCs without cytotoxicity. Furthermore, these inhibitory effects were reflected in the significant effect of PA on the NF-κB signaling pathway, as PA suppressed the transcription factors NFATc1 and c-Fos. We also determined that PA activated expression of the nuclear receptor pregnane X receptor (PXR) and promoted the PXR/Toll-like receptor 4 (TLR4) axis to inhibit the nuclear import of NF-κB (p50 and p65). Additionally, PA exerted therapeutic effects against osteoporosis in ovariectomized (OVX) mice, supporting the use of PA as a treatment for osteoporosis in the future.
Collapse
Affiliation(s)
- Qian Lu
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Department of Orthopaedics, Huzhou Central Hospital, Huzhou, China
| | - Chao Jiang
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jialong Hou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Hao Qian
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Feifan Chu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Weiqi Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Mengke Ye
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ziyi Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jian Liu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Hanbing Yao
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jianfeng Zhang
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jiake Xu
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.,School of Biomedical Sciences, University of Western Australia, Perth, WA, Australia
| | - Te Wang
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Shunwu Fan
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Qingqing Wang
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| |
Collapse
|
14
|
Chang ZP, Deng GF, Shao YY, Xu D, Zhao YN, Sun YF, Zhang SQ, Hou RG, Liu JJ. Shaoyao-Gancao Decoction Ameliorates the Inflammation State in Polycystic Ovary Syndrome Rats via Remodeling Gut Microbiota and Suppressing the TLR4/NF-κB Pathway. Front Pharmacol 2021; 12:670054. [PMID: 34054541 PMCID: PMC8155368 DOI: 10.3389/fphar.2021.670054] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 04/28/2021] [Indexed: 12/14/2022] Open
Abstract
Background: Emerging evidence suggests that gut microbiota plays a vital role in the occurrence of multiple endocrine disorders including polycystic ovary syndrome (PCOS). Shaoyao-Gancao Decoction (SGD), a classical Chinese prescription, has been widely used in the treatment of PCOS for decades. In previous studies, we found that SGD treatment could effectively reduce ovarian inflammation in PCOS rats. However, whether the anti-inflammation effect of SGD involves the regulation of the gut microbiota remains elusive. Methods: Letrozole-induced PCOS rat models were established, and the therapeutic effects of SGD were evaluated. Specifically, body weight, serum hormone concentrations, estrus phase and ovary histopathology were assessed. Then the structure of gut microbiota was determined by 16s rRNA sequencing. Additionally, the serum levels of pro-inflammatory cytokines and LPS were measured by ELISA kits. The key gene and protein expressions of TLR4/NF-κB signaling pathway were detected by quantitative real-time PCR and western blot. Results: SGD could effectively reduce body weight, regulate estrous cycles and ameliorate hyperandrogenism in PCOS rats. In addition, SGD treatment decreased releases of pro-inflammatory cytokines, enhanced the expressions of tight junction (occludin and claudin1), and then prevented a translocation of LPS into bloodstream. SGD could significantly reduce the ratio of Firmicutes to Bacteroidetes, decrease the abundance of LPS-producing pathogens Proteobateria and enrich the abundance of Butyricicoccus, Coprococcus, Akkermansia Blautia and Bacteroides in PCOS rats. Furthermore, SGD blunted the key gene and protein expressions of TLR4/NF-κB signaling pathway both in vivo and in LPS-induced RAW264.7 cells. Conclusion: SGD administration could ameliorate the inflammatory response in PCOS rats by remodeling gut microbiome structure, protecting gut barrier, and suppressing TLR4/NF-κB signaling pathway.
Collapse
Affiliation(s)
- Zhuang-Peng Chang
- School of Pharmaceutical, Shanxi Medical University, Taiyuan, China.,Department of Pharmacy, Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Gui-Feng Deng
- School of Pharmaceutical, Shanxi Medical University, Taiyuan, China.,Department of Pharmacy, Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Yun-Yun Shao
- School of Pharmaceutical, Shanxi Medical University, Taiyuan, China.,Department of Pharmacy, Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Ding Xu
- School of Pharmaceutical, Shanxi Medical University, Taiyuan, China.,Department of Pharmacy, Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Yi-Nan Zhao
- School of Pharmaceutical, Shanxi Medical University, Taiyuan, China.,Department of Pharmacy, Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Yi-Fan Sun
- School of Pharmaceutical, Shanxi Medical University, Taiyuan, China.,Department of Pharmacy, Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Shi-Quan Zhang
- School of Pharmaceutical, Shanxi Medical University, Taiyuan, China.,Department of Pharmacy, Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Rui-Gang Hou
- School of Pharmaceutical, Shanxi Medical University, Taiyuan, China.,Department of Pharmacy, Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Jun-Jin Liu
- School of Pharmaceutical, Shanxi Medical University, Taiyuan, China.,Department of Pharmacy, Second Hospital of Shanxi Medical University, Taiyuan, China
| |
Collapse
|
15
|
The Ketogenic Diet Reduces the Harmful Effects of Stress on Gut Mitochondrial Biogenesis in a Rat Model of Irritable Bowel Syndrome. Int J Mol Sci 2021; 22:ijms22073498. [PMID: 33800646 PMCID: PMC8037144 DOI: 10.3390/ijms22073498] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/23/2021] [Accepted: 03/25/2021] [Indexed: 01/18/2023] Open
Abstract
Functional alterations in irritable bowel syndrome have been associated with defects in bioenergetics and the mitochondrial network. Effects of high fat, adequate-protein, low carbohydrate ketogenic diet (KD) involve oxidative stress, inflammation, mitochondrial function, and biogenesis. The aim was to evaluate the KD efficacy in reducing the effects of stress on gut mitochondria. Newborn Wistar rats were exposed to maternal deprivation to induce IBS in adulthood. Intestinal inflammation (COX-2 and TRL-4); cellular redox status (SOD 1, SOD 2, PrxIII, mtDNA oxidatively modified purines); mitochondrial biogenesis (PPAR-γ, PGC-1α, COX-4, mtDNA content); and autophagy (Beclin-1, LC3 II) were evaluated in the colon of exposed rats fed with KD (IBD-KD) or standard diet (IBS-Std), and in unexposed controls (Ctrl). IBS-Std rats showed dysfunctional mitochondrial biogenesis (PPAR-γ, PGC-1α, COX-4, and mtDNA contents lower than in Ctrl) associated with inflammation and increased oxidative stress (higher levels of COX-2 and TLR-4, SOD 1, SOD 2, PrxIII, and oxidatively modified purines than in Ctrl). Loss of autophagy efficacy appeared from reduced levels of Beclin-1 and LC3 II. Feeding of animals with KD elicited compensatory mechanisms able to reduce inflammation, oxidative stress, restore mitochondrial function, and baseline autophagy, possibly via the upregulation of the PPAR-γ/PGC-1α axis.
Collapse
|