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Cha RH. Pharmacologic therapeutics in sarcopenia with chronic kidney disease. Kidney Res Clin Pract 2024; 43:143-155. [PMID: 38389147 PMCID: PMC11016676 DOI: 10.23876/j.krcp.23.094] [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: 04/23/2023] [Revised: 07/25/2023] [Accepted: 10/24/2023] [Indexed: 02/24/2024] Open
Abstract
Inflammation, metabolic acidosis, renin-angiotensin system activation, insulin resistance, and impaired perfusion to skeletal muscles, among others, are possible causes of uremic sarcopenia. These conditions induce the activation of the nuclear factor-kappa B and mitogen-activated protein kinase pathways, adenosine triphosphate ubiquitin-proteasome system, and reactive oxygen species system, resulting in protein catabolism. Strategies for the prevention and treatment of sarcopenia in chronic kidney disease (CKD) are aerobic and resistance exercises along with nutritional interventions. Anabolic hormones have shown beneficial effects. Megestrol acetate increased weight, protein catabolic rate, and albumin concentration, and it increased intracellular water component and muscle mass. Vitamin D supplementation showed improvement in physical function, muscle strength, and muscle mass. Correction of metabolic acidosis showed an increase in protein intake, serum albumin levels, body weight, and mid-arm circumference. The kidney- gut-muscle axis indicates that dysbiosis and changes in gut-derived uremic toxins and short-chain fatty acids affect muscle mass, composition, strength, and functional capacity. Biotic supplements, AST-120 administration, hemodiafiltration, and preservation of residual renal function are alleged to reduce uremic toxins, including indoxyl sulfate (IS) and p-cresyl sulfate (PCS). Synbiotics reversed the microbiota change in CKD patients and decreased uremic toxins. AST-120 administration changed the overall gut microbiota composition in CKD. AST-120 prevented IS and PCS tissue accumulation, ameliorated muscle atrophy, improved exercise capacity and mitochondrial biogenesis, restored epithelial tight junction proteins, and reduced plasma endotoxin levels and markers of oxidative stress and inflammation. In a human study, the addition of AST-120 to standard treatment had modest beneficial effects on gait speed change and quality of life.
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Affiliation(s)
- Ran-hui Cha
- Department of Internal Medicine, National Medical Center, Seoul, Republic of Korea
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2
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Eryavuz Onmaz D, Tezcan D, Yilmaz S, Onmaz M, Unlu A. Altered kynurenine pathway metabolism and association with disease activity in patients with systemic lupus. Amino Acids 2023; 55:1937-1947. [PMID: 37925676 DOI: 10.1007/s00726-023-03353-7] [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: 04/12/2023] [Accepted: 10/23/2023] [Indexed: 11/07/2023]
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease accompanied by increased release of proinflammatory cytokines that are known to activate the indoleamine 2,3-dioxygenase (IDO-1) enzyme, which catalyzes the rate-limiting step of the kynurenine pathway (KP). This study aimed to measure KP metabolite levels in patients with SLE and investigate the relationship between disease activity, clinical findings, and KP. The study included 100 patients with SLE and 100 healthy controls. Serum tryptophan (TRP), kynurenine (KYN), kynurenic acid (KYNA), 3-hydroxyanthranilic acid (3HAA), 3-hydroxykynurenine (3HK), quinolinic acid (QA) concentrations were measured with tandem mass spectrometry. Serum KYN, KYNA, 3HAA, 3HK, and QA levels of the patients with SLE were significantly higher than the control group. Serum QA levels were elevated in patients with neurological involvement (four patients with peripheral neuropathy and two patients with mononeuropathy), serum KYN levels and KYN/TRP ratio increased in patients with joint involvement, and serum KYN, 3HK, and 3HAA levels and the KYN/TRP ratio were increased in patients with renal involvement. Moreover, KYN and KYN/TRP ratios were positively correlated with the disease activity score. These findings indicated that imbalances in KP metabolites may be associated with the pathogenesis, activation, and clinical manifestations of SLE.
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Affiliation(s)
- Duygu Eryavuz Onmaz
- Department of Biochemistry, Selcuk University Faculty of Medicine, Alaaddin Keykubat Campus, Selcuklu, 42075, Konya, Turkey.
| | - Dilek Tezcan
- Division of Rheumatology, Gülhane Training and Research Hospital, Ankara, Turkey
| | - Sema Yilmaz
- Division of Rheumatology, Selcuk University Faculty of Medicine, Konya, Turkey
| | - Mustafa Onmaz
- Faculty of Medicine, Department of Family Medicine, Necmettin Erbakan University, Konya, Turkey
| | - Ali Unlu
- Department of Biochemistry, Selcuk University Faculty of Medicine, Alaaddin Keykubat Campus, Selcuklu, 42075, Konya, Turkey
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Wang YN, Miao H, Yu XY, Guo Y, Su W, Liu F, Cao G, Zhao YY. Oxidative stress and inflammation are mediated via aryl hydrocarbon receptor signalling in idiopathic membranous nephropathy. Free Radic Biol Med 2023; 207:89-106. [PMID: 37451370 DOI: 10.1016/j.freeradbiomed.2023.07.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 07/02/2023] [Accepted: 07/12/2023] [Indexed: 07/18/2023]
Abstract
Membranous nephropathy (MN) patients are diagnosed by the presence of phospholipase A2 receptor (PLA2R) before they progress to renal failure. However, the subepithelium-like immunocomplex deposit-mediated downstream molecular pathways are poorly understood. The aryl hydrocarbon receptor (AHR), NF-ƙB and Nrf2 pathways play central roles in the pathogenesis and progression of chronic kidney disease. However, their mutual effects on MN require further examination. Thus, we investigated the effect of AHR signalling on the NF-ƙB and Nrf2 pathways in IMN patients, cationic bovine serum albumin (CBSA)-injected rats and zymosan activation serum (ZAS)-treated podocytes. IMN patients show significantly decreased serum total protein and albumin levels, increased urine protein levels and intrarenal IgG4 and PLA2R protein expression in glomeruli compared with controls. IMN patients exhibited increased mRNA expression of intrarenal AHR and its target genes, including CYP1A1, CYP1A2, CYP1B1 and COX-2. This increase was accompanied by significantly upregulated protein expression of CD3, NF-ƙB p65 and COX-2 and significantly downregulated Nrf2 and HO-1 expression. Similarly, CBSA-induced rats showed severe proteinuria and activated intrarenal AHR signalling. This was accompanied by significantly upregulated protein expression of intrarenal p-IκBα, NF-κB p65 and its gene products, including COX-2, MCP-1, iNOS, 12-LOX, p47phox and p67phox, and significantly downregulated protein expression of Nrf2 and its gene products, including HO-1, catalase, GCLC, GCLM, MnSOD and NQO1. These results were further verified in ZAS-induced podocytes. Treatment with the AHR antagonist CH223191 and AHRsiRNA significantly preserved podocyte-specific protein expression and improved the NF-ƙB and Nrf2 pathways in ZAS-induced podocytes. In contrast, similar results were obtained in ZAS-induced podocytes treated with the NF-ƙB inhibitor BAY 11-7082 and NF-κBp65 siRNA. However, neither method had a significant effect on AHR signalling. Collectively, these results indicate that the NF-ƙB pathway is a downstream target of AHR signalling. Our findings suggest that blocking AHR signalling inhibits oxidative stress and inflammation, thereby improving proteinuria and renal injury.
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Affiliation(s)
- Yan-Ni Wang
- School of Pharmacy, Zhejiang Chinese Medical University, No. 548 Binwen Road, Hangzhou, Zhejiang, 310053, China
| | - Hua Miao
- School of Pharmacy, Zhejiang Chinese Medical University, No. 548 Binwen Road, Hangzhou, Zhejiang, 310053, China
| | - Xiao-Yong Yu
- Department of Nephrology, Shaanxi Traditional Chinese Medicine Hospital, No. 2 Xihuamen, Xi'an, Shaanxi, 710003, China
| | - Yan Guo
- Department of Public Health and Sciences, University of Miami, 1120 NW 14th Street, Miami, FL, 33136, USA
| | - Wei Su
- Department of Nephrology, Baoji Central Hospital, No. 8 Jiangtan Road, Baoji, Shaanxi, 721008, China
| | - Fei Liu
- Department of Urology, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 17 South of Panjiayuan, Beijing, 100021, China.
| | - Gang Cao
- School of Pharmacy, Zhejiang Chinese Medical University, No. 548 Binwen Road, Hangzhou, Zhejiang, 310053, China.
| | - Ying-Yong Zhao
- School of Pharmacy, Zhejiang Chinese Medical University, No. 548 Binwen Road, Hangzhou, Zhejiang, 310053, China.
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Ma SX, Li XJ, Duan TT, Pei M, Zou L, Yu XY, Zhao YY. Moshen granule ameliorates membranous nephropathy by regulating NF-ƙB/Nrf2 pathways via aryl hydrocarbon receptor signalling. Heliyon 2023; 9:e20019. [PMID: 37809643 PMCID: PMC10559749 DOI: 10.1016/j.heliyon.2023.e20019] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 08/18/2023] [Accepted: 09/08/2023] [Indexed: 10/10/2023] Open
Abstract
Considerable achievements were realized in illuminating underlying pathological mechanisms of patients with idiopathic membranous nephropathy (IMN). Although IMN patients are well diagnosed before they reach renal failure, no currently available drug intervention is effective in halting IMN progression. In this study, we assess Moshen granule (MSG) effect on IMN patients and cationic bovine serum albumin (CBSA)-induced rats. Increasing studies has indicated that activation of aryl hydrocarbon receptor (AHR) was related to oxidative stress and inflammation. We further determine MSG effect on AHR, nuclear factor ƙB (NF-ƙB) and nuclear factor erythroid 2-related factor 2 (Nrf2) in the CBSA-induced rats. MSG markedly reduces proteinuria and improves kidney function in both IMN patients and rats induced by CBSA. MSG markedly inhibits increased mRNA expressions of intrarenal AHR and its four downstream target genes including CYP1A1, CYP1A2, CYP1B1 and COX-2 compared with untreated CBSA-induced rats. This is accompanied by markedly downregulated protein expressions of p-IƙBα and NF-ƙB p65 and its downstream gene products including MCP-1, COX-2, 12-LOX, iNOS, p47phox and p67phox, while markedly preserves protein expressions of Nrf2 and its downstream gene products including catalase, HO-1, GCLM, GCLC, MnSOD and NQO1 in the kidney tissues. These data suggests MSG blunts podocyte damage through inhibiting activation of NF-ƙB/Nrf2 pathway via AHR signaling. This finding may provide a promising therapy for treatment of IMN through oxidative stress and inflammation.
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Affiliation(s)
- Shi-Xing Ma
- Department of Nephrology, Baoji Central Hospital, Baoji, Shaanxi 721008, China
| | - Xiao-Jun Li
- Department of Nephrology, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510315, China
| | - Ting-Ting Duan
- Guangdong Nephrotic Drug Engineering Technology Research Center, Institute of Consun Co. for Chinese Medicine in Kidney Diseases, Guangdong Consun Pharmaceutical Group, Guangzhou, Guangdong 510530, China
| | - Ming Pei
- Department of Nephrology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300073, China
| | - Liang Zou
- School of Food and Bioengineering, Chengdu University, Chengdu, Sichuan 610106, China
| | - Xiao-Yong Yu
- Department of Nephrology, Shaanxi Traditional Chinese Medicine Hospital, Xi'an, Shaanxi 710003, China
| | - Ying-Yong Zhao
- School of Food and Bioengineering, Chengdu University, Chengdu, Sichuan 610106, China
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China
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Liu X, Deng R, Chen Y, Huang S, Lu J, Zheng L, Xiong G, Li S. Jian-Pi-Yi-Shen Formula Improves Adenine-Induced Chronic Kidney Disease via Regulating Tryptophan Metabolism and Aryl Hydrocarbon Receptor Signaling. Front Pharmacol 2022; 13:922707. [PMID: 35865941 PMCID: PMC9294467 DOI: 10.3389/fphar.2022.922707] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 06/15/2022] [Indexed: 11/13/2022] Open
Abstract
Traditional Chinese medicine (TCM) is an important complementary and alternative branch of chronic kidney disease (CKD) therapy. Jian-Pi-Yi-Shen formula (JPYSF) is a TCM formula used for treating CKD with good efficacy. However, the underlying mechanisms of JPYSF in treating CKD remain to be elucidated. The purpose of the present study was to investigate the renoprotective effect and potential mechanism of JPYSF in treating CKD. CKD rat model was induced by feeding a diet containing 0.75% w/w adenine for 4 weeks. JPYSF was given by gavage every day, starting from the 3rd week of the adenine-containing diet and continuing for 4 weeks at the dose of 10.89 g/kg. Renal injury was evaluated by serum creatinine (Scr), blood urea nitrogen (BUN), histopathology, and fibrotic markers expression. Serum levels of tryptophan metabolites were detected by ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). Aryl hydrocarbon receptor (AHR) signaling was tested by Western blot analysis. The results found that JPYSF treatment significantly lowered Scr and BUN levels, improved renal pathological injury, and down-regulated fibrotic markers expression in CKD rats. Furthermore, JPYSF significantly reduced the levels of 10 tryptophan metabolites in the serum of CKD rats and restored the level of tryptophan. Additionally, the kidney expression of AHR signaling was enhanced in CKD rats and was further suppressed in JPYSF treated rats. These results suggested that JPYSF protected against adenine-induced CKD via modulating tryptophan metabolism and AHR activation.
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Affiliation(s)
- Xinhui Liu
- Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen, China
- *Correspondence: Xinhui Liu, ; Guoliang Xiong, ; Shunmin Li,
| | - Ruyu Deng
- Shenzhen Traditional Chinese Medicine Hospital Affiliated to Nanjing University of Chinese Medicine, Shenzhen, China
| | - Yulian Chen
- The Fourth Clinical Medical College, Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Shiying Huang
- Shenzhen Key Laboratory of Hospital Chinese Medicine Preparation, Shenzhen Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Jiandong Lu
- Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Lin Zheng
- Shenzhen Key Laboratory of Hospital Chinese Medicine Preparation, Shenzhen Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Guoliang Xiong
- Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen, China
- *Correspondence: Xinhui Liu, ; Guoliang Xiong, ; Shunmin Li,
| | - Shunmin Li
- Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen, China
- *Correspondence: Xinhui Liu, ; Guoliang Xiong, ; Shunmin Li,
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Grishanova AY, Perepechaeva ML. Aryl Hydrocarbon Receptor in Oxidative Stress as a Double Agent and Its Biological and Therapeutic Significance. Int J Mol Sci 2022; 23:ijms23126719. [PMID: 35743162 PMCID: PMC9224361 DOI: 10.3390/ijms23126719] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/14/2022] [Accepted: 06/14/2022] [Indexed: 12/02/2022] Open
Abstract
The aryl hydrocarbon receptor (AhR) has long been implicated in the induction of a battery of genes involved in the metabolism of xenobiotics and endogenous compounds. AhR is a ligand-activated transcription factor necessary for the launch of transcriptional responses important in health and disease. In past decades, evidence has accumulated that AhR is associated with the cellular response to oxidative stress, and this property of AhR must be taken into account during investigations into a mechanism of action of xenobiotics that is able to activate AhR or that is susceptible to metabolic activation by enzymes encoded by the genes that are under the control of AhR. In this review, we examine various mechanisms by which AhR takes part in the oxidative-stress response, including antioxidant and prooxidant enzymes and cytochrome P450. We also show that AhR, as a participant in the redox balance and as a modulator of redox signals, is being increasingly studied as a target for a new class of therapeutic compounds and as an explanation for the pathogenesis of some disorders.
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Hopp K, Kleczko EK, Gitomer BY, Chonchol M, Klawitter J, Christians U, Klawitter J. Metabolic reprogramming in a slowly developing orthologous model of polycystic kidney disease. Am J Physiol Renal Physiol 2022; 322:F258-F267. [PMID: 35037466 PMCID: PMC8858679 DOI: 10.1152/ajprenal.00262.2021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 01/05/2022] [Accepted: 01/06/2022] [Indexed: 11/22/2022] Open
Abstract
Autosomal dominant polycystic kidney disease (ADPKD) is the most common inherited kidney disease and affects 1 in 1,000 individuals. There is accumulating evidence suggesting that there are shared cellular mechanisms responsible for cystogenesis in human and murine PKD and that reprogramming of metabolism is a key disease feature. In this study, we used a targeted metabolomics approach in an orthologous mouse model of PKD (Pkd1RC/RC) to investigate the metabolic modifications a cystic kidney undergoes during disease progression. Using the Kyoto Encyclopedia of Genes and Genomes pathway database, we identified several biologically relevant metabolic pathways that were altered early in this disease (in 3-mo-old Pkd1RC/RC mice), the most highly represented being arginine biosynthesis and metabolism and tryptophan and phenylalanine metabolism. During the next 6 mo of disease progression, multiple uremic solutes accumulated in the kidney of cystic mice, including several established markers of oxidative stress and endothelial dysfunction (allantoin, asymmetric dimethylarginine, homocysteine, malondialdehyde, methionine sulfoxide, and S-adenosylhomocysteine). Levels of kynurenines and polyamines were also augmented in kidneys of Pkd1RC/RC versus wild-type mice, as were the levels of bacteria-produced indoles, whose increase within PKD kidneys suggests microbial dysbiosis. In summary, we confirmed previously published and identified novel metabolic markers and pathways of PKD progression that may prove helpful for diagnosis and monitoring of cystic kidney disease in patients. Furthermore, they provide targets for novel therapeutic approaches that deserve further study and hint toward currently understudied pathomechanisms.NEW & NOTEWORTHY This report delineates the evolution of metabolic changes occurring during autosomal dominant polycystic kidney disease (ADPKD) progression. Using an orthologous model, we performed kidney metabolomics and confirmed dysregulation of metabolic pathways previously found altered in nonorthologous or rapidly-progressive PKD models. Importantly, we identified novel alterations, including augmentation of kynurenines, polyamines, and indoles, suggesting increased inflammation and microbial dysbiosis that provide insights into PKD pathomechanisms and may prove helpful for diagnosing, monitoring, and treating ADPKD.
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Affiliation(s)
- Katharina Hopp
- Division of Renal Diseases and Hypertension, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
- Consortium for Fibrosis Research and Translation, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Emily K Kleczko
- Division of Renal Diseases and Hypertension, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Berenice Y Gitomer
- Division of Renal Diseases and Hypertension, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Michel Chonchol
- Division of Renal Diseases and Hypertension, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
- Consortium for Fibrosis Research and Translation, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Jost Klawitter
- Department of Anesthesiology, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Uwe Christians
- Department of Anesthesiology, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Jelena Klawitter
- Division of Renal Diseases and Hypertension, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
- Department of Anesthesiology, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
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Zhou S, He Y, Zhang W, Xiong Y, Jiang L, Wang J, Cui X, Qu Y, Ge F. Ophiocordyceps lanpingensis polysaccharides alleviate chronic kidney disease through MAPK/NF-κB pathway. JOURNAL OF ETHNOPHARMACOLOGY 2021; 276:114189. [PMID: 33964361 DOI: 10.1016/j.jep.2021.114189] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 04/22/2021] [Accepted: 05/01/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Ophiocordyceps lanpingensis (O. lanpingensis) is a traditional ethno-medicine distributed in Eastern Himalayas, which has been used by local minorities to prevent and treat urinary diseases for hundreds of years. However, the corresponding active components and related pharmacological mechanism of such medication are not clear yet. AIMS OF THE STUDY This study was performed to investigate the effects and potential mechanisms of O. lanpingensis polysaccharides (OLP) in the treatment of chronic kidney disease (CKD) based on our previous research results. MATERIALS AND METHODS Methylation analysis was used to investigate the monosaccharide composition and glycosidic linkages in OLP. The animals were divided into the control group, CKD model group, losartan group and three different doses of OLP groups. The CKD mouse model was established by the adenine gavage. The histological changes of renal tissue were observed by Hematoxylin-eosin and Masson staining. Biochemical indicators, including blood urea nitrogen (BUN), serum creatinine (Scr), serum phosphorus (P), plasma calcium (Ca), reactive oxygen species (ROS), superoxide dismutase (SOD), glutathione peroxidase (GSH-PX) and malondialdehyde (MDA) were measured to evaluate the alleviation of CKD by OLP. Moreover, the expression levels of a series of cytokines related to the inflammation, apoptosis and fibrosis were analyzed to explore the possible mechanisms of OLP to treat CKD. RESULTS OLP is composed of three kinds of monosaccharides. There are eight kinds of glycosidic linkages in OLP, among which →4)-Glcp-(1→ is the main linkage. OLP could significantly attenuate CKD in mice and the tubulointerstitial damage was recovered to almost normal after the treatment of OLP. Compared with the CKD model group, the levels of Scr, BUN, MDA, P in OLP treatment groups were significantly decreased; and the levels of SOD and Ca were increased after OLP treatment. Furthermore, OLP could reduce the oxidative stress of the renal tissues, decrease the expression levels of pro-inflammatory factors through TLR4-mediated MAPK and NF-κB pathway, inhibit the apoptosis of renal cells by MAPK pathway, and relieve the renal fibrosis by down-regulating the expression of TGF-β1. CONCLUSIONS OLP is composed of three kinds of monosaccharides and →4)-Glcp-(1→ is the main glycosidic linkage in the polysaccharide. OLP could ameliorate CKD in mice by declining the oxidative stress, inflammation, apoptosis and fibrosis in the kidneys. The study provided some evidences for the potential application of OLP in alleviating CKD.
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Affiliation(s)
- Shubo Zhou
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China; Key Laboratory of Sustainable Utilization of Panax notoginseng Resources of Yunnan Province, Kunming 650500, China
| | - Yifeng He
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China; Key Laboratory of Sustainable Utilization of Panax notoginseng Resources of Yunnan Province, Kunming 650500, China
| | - Weiping Zhang
- The Second Affiliated Hospital of Yunnan University of Chinese Medicine, Kunming 650215, China
| | - Yin Xiong
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China; Key Laboratory of Sustainable Utilization of Panax notoginseng Resources of Yunnan Province, Kunming 650500, China
| | - Li Jiang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China; Key Laboratory of Sustainable Utilization of Panax notoginseng Resources of Yunnan Province, Kunming 650500, China
| | - Juan Wang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China; Key Laboratory of Sustainable Utilization of Panax notoginseng Resources of Yunnan Province, Kunming 650500, China
| | - Xiuming Cui
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China; Key Laboratory of Sustainable Utilization of Panax notoginseng Resources of Yunnan Province, Kunming 650500, China
| | - Yuan Qu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China; Key Laboratory of Sustainable Utilization of Panax notoginseng Resources of Yunnan Province, Kunming 650500, China.
| | - Feng Ge
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China; Key Laboratory of Sustainable Utilization of Panax notoginseng Resources of Yunnan Province, Kunming 650500, China.
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9
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Mo Y, Lu Z, Wang L, Ji C, Zou C, Liu X. The Aryl Hydrocarbon Receptor in Chronic Kidney Disease: Friend or Foe? Front Cell Dev Biol 2020; 8:589752. [PMID: 33415104 PMCID: PMC7784643 DOI: 10.3389/fcell.2020.589752] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 11/18/2020] [Indexed: 12/11/2022] Open
Abstract
The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor that promotes cell responses to small molecules derived from the diet, microorganisms, metabolism and pollutants. The AhR signal regulates many basic cellular processes, including cell cycle progression, adhesion, migration, apoptosis and cell proliferation. Many studies have shown that AhR is associated with chronic kidney disease (CKD) and its complications. This article reviews the current knowledge about the role of AhR in CKD, showing that AhR mediates CKD complications, including cardiovascular disease, anemia, bone disorders, cognitive dysfunction and malnutrition, and that it influences drug metabolism in individuals with CKD. AhR enhances the intestinal barrier function to reduce the harmful effects of uremic toxins. Therefore, understanding the complex roles of AhR during CKD is important to be able to target this transcription factor safely and effectively for CKD prevention and treatment.
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Affiliation(s)
- Yenan Mo
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Nephrology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhaoyu Lu
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Nephrology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Lixin Wang
- Department of Nephrology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Chunlan Ji
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Nephrology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Chuan Zou
- Department of Nephrology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xusheng Liu
- Department of Nephrology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
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