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Xu C, Xia L, Xu D, Liu Y, Jin P, Zhai M, Mao Y, Wang Y, Wen A, Yang J, Yang L. Cardioprotective effects of asiaticoside against diabetic cardiomyopathy: Activation of the AMPK/Nrf2 pathway. J Cell Mol Med 2024; 28:e18055. [PMID: 38113341 PMCID: PMC10826442 DOI: 10.1111/jcmm.18055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 11/05/2023] [Accepted: 11/14/2023] [Indexed: 12/21/2023] Open
Abstract
Diabetic cardiomyopathy (DCM) is a chronic microvascular complication of diabetes that is generally defined as ventricular dysfunction occurring in patients with diabetes and unrelated to known causes. Several mechanisms have been proposed to contribute to the occurrence and persistence of DCM, in which oxidative stress and autophagy play a non-negligible role. Diabetic cardiomyopathy is involved in a variety of physiological and pathological processes. The 5' adenosine monophosphate-activated protein kinase/nuclear factor-erythroid 2-related factor 2 (AMPK/Nrf2) are expressed in the heart, and studies have shown that asiaticoside (ASI) and activated AMPK/Nrf2 have a protective effect on the myocardium. However, the roles of ASI and AMPK/Nrf2 in DCM are unknown. The intraperitoneal injection of streptozotocin (STZ) and high-fat feed were used to establish the DCM models in 100 C57/BL mice. Asiaticoside and inhibitors of AMPK/Nrf2 were used for intervention. Cardiac function, oxidative stress, and autophagy were measured in mice. DCM mice displayed increased levels of oxidative stress while autophagy levels declined. In addition, AMPK/Nrf2 was activated in DCM mice with ASI intervention. Further, we discovered that AMPK/Nrf2 inhibition blocked the protective effect of ASI by compound C and treatment with ML-385. The present study demonstrates that ASI exerts a protective effect against DCM via the potential activation of the AMPK/Nrf2 pathway. Asiaticoside is a potential therapeutic target for DCM.
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Affiliation(s)
- Chennian Xu
- Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of the State Administration of Traditional Chinese Medicine, Department of Pharmacology, School of PharmacyAir Force Medical UniversityXi'anShaanxiChina
- Department of Cardiovascular Surgery, Xijing HospitalAir Force Medical UniversityXi'anShaanxiChina
- Department of Cardiovascular SurgeryGeneral Hospital of Northern Theatre CommandShenyangLiaoningChina
| | - Lin Xia
- Department of Cardiovascular SurgeryGeneral Hospital of Northern Theatre CommandShenyangLiaoningChina
| | - Dengyue Xu
- Department of Cardiovascular SurgeryGeneral Hospital of Northern Theatre CommandShenyangLiaoningChina
- School of Biomedical Engineering, Faculty of MedicineDalian University of TechnologyDalianChina
| | - Yang Liu
- Department of Cardiovascular Surgery, Xijing HospitalAir Force Medical UniversityXi'anShaanxiChina
| | - Ping Jin
- Department of Cardiovascular Surgery, Xijing HospitalAir Force Medical UniversityXi'anShaanxiChina
| | - Mengen Zhai
- Department of Cardiovascular Surgery, Xijing HospitalAir Force Medical UniversityXi'anShaanxiChina
| | - Yu Mao
- Department of Cardiovascular Surgery, Xijing HospitalAir Force Medical UniversityXi'anShaanxiChina
| | - Yiwei Wang
- Department of Cardiovascular Surgery, Xijing HospitalAir Force Medical UniversityXi'anShaanxiChina
| | - Anguo Wen
- Department of Cardiothoracic SurgeryThe 79th Group Military Hospital of the Chinese People's Liberation ArmyLiaoyangLiaoning ProvinceChina
| | - Jian Yang
- Department of Cardiovascular Surgery, Xijing HospitalAir Force Medical UniversityXi'anShaanxiChina
| | - Lifang Yang
- Department of AnesthesiologyXi'an Children's HospitalXi'anShaanxiChina
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Li M, Wang Z, Fu S, Sun N, Li W, Xu Y, Han X, Zhang J, Miao J. Taurine reduction of injury from neutrophil infiltration ameliorates Streptococcus uberis-induced mastitis. Int Immunopharmacol 2023; 124:111028. [PMID: 37857121 DOI: 10.1016/j.intimp.2023.111028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 09/14/2023] [Accepted: 10/04/2023] [Indexed: 10/21/2023]
Abstract
Mastitis is a common disease of dairy cows characterized by infiltration of leukocytes, especially neutrophils, resulting in increased permeability of the blood-milk barrier (BMB). Taurine, a functional nutrient, has been shown to have anti-inflammatory and antioxidant effects. Here, we investigated the regulatory effects and mechanisms of taurine on the complex immune network of the mammary gland in Streptococcus uberis (S. uberis) infection. We found that taurine had no direct effect on CXCL2-mediated neutrophil chemotaxis. However, it inhibited MAPK and NF-κB signalings by modulating the activity of TAK1 downstream of TLR2, thereby reducing CXCL2 expression in macrophages to reduce neutrophil recruitment in S. uberis infection. Further, the AMPK/Nrf2 signaling pathway was activated by taurine to help mitigate oxidative damage, apoptosis and disruption of tight junctions in mammary epithelial cells caused by hypochlorous acid, a strong oxidant produced by neutrophils, thus protecting the integrity of the mammary epithelial barrier. Taurine protects the BMB from damage caused by neutrophils via blocking the macrophage-CXCL2-neutrophil signaling axis and increasing the antioxidant capacity of mammary epithelial cells.
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Affiliation(s)
- Ming Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China; College of Veterinary Medicine, Yunnan Agricultural University, Kunming 650201, China
| | - Zhenglei Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Shaodong Fu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Naiyan Sun
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Weizhen Li
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming 650201, China
| | - Yuanyuan Xu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiangan Han
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, 200241, China
| | - Jinqiu Zhang
- National Research Center for Veterinary Vaccine Engineering and Technology of China, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
| | - Jinfeng Miao
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China.
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Wu JM, Zhaori G, Mei L, Ren XM, Laga AT, Deligen B. Plantamajoside modulates immune dysregulation and hepatic lipid metabolism in rats with nonalcoholic fatty liver disease via AMPK/Nrf2 elevation. Kaohsiung J Med Sci 2023; 39:801-810. [PMID: 37265208 DOI: 10.1002/kjm2.12712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/07/2023] [Accepted: 04/17/2023] [Indexed: 06/03/2023] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is a hepatic metabolic syndrome with a rapidly increasing prevalence globally. Plantamajoside (PMS), a phenylethanoid glycoside component extracted from Plantago asiatica, has various biological properties. However, its effect on NAFLD remains unknown. The study aimed to explore the effect and mechanism of PMS on NAFLD in the high-fat diet (HFD)-feeding rats. PMS induced a decrease in body and liver weight, and the amelioration in the blood lipid parameters and pathological symptoms in HFD-feeding rats. The increase in the serum concentrations and the relative protein expressions of proinflammatory factors was decreased by the PMS treatment in HFD-induced NAFLD rats. Additionally, PMS reduced the excessive lipid vacuoles, and modified the relative expressions of proteins involved in the fatty acid synthesis and uptake in HFD-feeding rats. Mechanically, the downregulation of AMPK/Nrf2 pathway in HFD-feeding rats was restored by the PMS treatment. Inhibition of AMPK pathway reversed the PMS-induced the increase in the level of inflammatory factors, pathological symptoms, excessive lipid vacuoles, and the relative expression of proteins involved in the fatty acid synthesis and uptake. Collectively, PMS ameliorated immune dysregulation and abnormal hepatic lipid metabolism by activating AMPK/Nrf2 pathway in rats with NAFLD.
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Affiliation(s)
- Ji-Mu Wu
- Department of Gastroenterology, Affiliated Hospital of Inner Mongolia Minzu University, Tongliao, China
| | - Getu Zhaori
- Department of Gastroenterology, Affiliated Hospital of Inner Mongolia Minzu University, Tongliao, China
| | - Li Mei
- Department of Gastroenterology, Affiliated Hospital of Inner Mongolia Minzu University, Tongliao, China
| | - Xiao-Man Ren
- Department of Gastroenterology, Affiliated Hospital of Inner Mongolia Minzu University, Tongliao, China
| | - Arong Tong Laga
- Department of Gastroenterology, Affiliated Hospital of Inner Mongolia Minzu University, Tongliao, China
| | - Batu Deligen
- Department of Gastroenterology, Affiliated Hospital of Inner Mongolia Minzu University, Tongliao, China
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Xu C, Liu Y, Yang J, Zhai M, Fan Z, Qiao R, Jin P, Yang L. Effects of berbamine against myocardial ischemia/reperfusion injury: Activation of the 5' adenosine monophosphate-activated protein kinase/nuclear factor erythroid 2-related factor pathway and changes in the mitochondrial state. Biofactors 2022; 48:651-664. [PMID: 35129229 PMCID: PMC9305777 DOI: 10.1002/biof.1820] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 12/10/2021] [Indexed: 12/13/2022]
Abstract
This study was designed to investigate whether berbamine (BA)-induced cardioprotective effects were related to 5' adenosine monophosphate-activated protein kinase (AMPK)/nuclear factor erythroid 2-related factor (Nrf2) signaling and changes in the mitochondria in myocardial ischemia/reperfusion (I/R) injury. C57/BL6 mice were exposed to BA (10 mg/kg/d), with or without administration of the AMPK specific inhibitor compound C (5 mg/kg/d) or the Nrf2 specific inhibitor ML-385 (30 mg/kg/d), and then subjected to a myocardial I/R operation. As expected, BA significantly improved post-ischemic cardiac function, reduced infarct size and apoptotic cell death, decreased oxidative stress, and improved the mitochondrial state. Furthermore, BA markedly increased AMPK activation, Nrf2 nuclear translocation, and the levels of NAD(P)H quinone dehydrogenase and heme oxygenase-1. Nevertheless, these BA-induced changes were abrogated by compound C. In addition, ML-385 also canceled the cardioprotective effects of BA but had little effect on AMPK activation. Our results demonstrate that BA alleviates myocardial I/R injury and the mitochondrial state by inhibiting apoptosis and oxidative stress via the AMPK/Nrf2 signaling pathway.
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Affiliation(s)
- Chennian Xu
- Department of Cardiovascular SurgeryGeneral Hospital of Northern Theater CommandShenyangChina
- Department of Cardiovascular SurgeryXijing Hospital, Air Force Medical UniversityXi'anChina
| | - Yang Liu
- Department of Cardiovascular SurgeryXijing Hospital, Air Force Medical UniversityXi'anChina
| | - Jian Yang
- Department of Cardiovascular SurgeryXijing Hospital, Air Force Medical UniversityXi'anChina
| | - Mengen Zhai
- Department of Cardiovascular SurgeryXijing Hospital, Air Force Medical UniversityXi'anChina
| | - Zhenge Fan
- Department of Cardiovascular SurgeryXijing Hospital, Air Force Medical UniversityXi'anChina
| | - Rui Qiao
- Department of Cardiovascular SurgeryGeneral Hospital of Northern Theater CommandShenyangChina
| | - Ping Jin
- Department of Cardiovascular SurgeryXijing Hospital, Air Force Medical UniversityXi'anChina
| | - Lifang Yang
- Department of AnesthesiologyXi'an Children's HospitalXi'anChina
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5
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Guo W, Li W, Su Y, Liu S, Kan X, Ran X, Cao Y, Fu S, Liu J. GPR109A alleviate mastitis and enhances the blood milk barrier by activating AMPK/Nrf2 and autophagy. Int J Biol Sci 2021; 17:4271-4284. [PMID: 34803497 PMCID: PMC8579459 DOI: 10.7150/ijbs.62380] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 10/04/2021] [Indexed: 02/01/2023] Open
Abstract
Mastitis causes great psychological and physical pain among women. Our previous studies found that niacin has anti-inflammatory effect, and the realization of this function depends on GPR109A. However, there are no previous reports about the anti-inflammatory function of GPR109A in mastitis. In our study, we observed the effect of niacin on the WT and GPR109A-/- mice mastitis model. The results showed that administration of niacin to WT mice reduced the damage, proinflammatory mediators and protected the integrity of the blood milk barrier in mammary gland. While in GPR109A-/- mice, there was no effect on the above indexes. In mammary epithelial cells, GPR109A was able to promote autophagy and Nrf2 nuclear import through AMPK. In LPS-induced mammary epithelial cells, niacin inhibited the LPS-induced inflammatory response and downregulation of tight junction proteins, and these effects were eliminated by knocking down GPR109A, blocking autophagy or inhibiting Nrf2 nuclear import. These results indicate that in mastitis, GPR109A promotes autophagy and Nrf2 nuclear import through AMPK, thereby inhibiting inflammatory damage to the mammary gland and repairing the blood milk barrier. Our results suggested that GPR109A may be a potential target for the treatment of mastitis.
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Affiliation(s)
- Wenjin Guo
- College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Wen Li
- College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Yingchun Su
- College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Shu Liu
- College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Xingchi Kan
- College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Xin Ran
- College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Yu Cao
- College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Shoupeng Fu
- College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Juxiong Liu
- College of Veterinary Medicine, Jilin University, Changchun 130062, China
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Xu C, Wang J, Fan Z, Zhang S, Qiao R, Liu Y, Yang J, Yang L, Wang H. Cardioprotective effects of melatonin against myocardial ischaemia/reperfusion injury: Activation of AMPK/Nrf2 pathway. J Cell Mol Med 2021; 25:6455-6459. [PMID: 34128312 PMCID: PMC8406481 DOI: 10.1111/jcmm.16691] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 04/23/2021] [Accepted: 04/28/2021] [Indexed: 01/03/2023] Open
Abstract
Although reperfusion is the most effective therapy for patients with acute myocardial infarction, reperfusion injury limits the therapeutic effects of early reperfusion. Oxidative stress plays a crucial role in myocardial ischaemia/reperfusion (I/R) injury. Melatonin, a circulating hormone, is well-known as an antioxidant in cardiovascular diseases. In this short communication, we show that melatonin significantly improves post-ischaemic cardiac function, reduces infarct size and decreases oxidative stress. Furthermore, melatonin markedly increases AMPK activation and Nrf2 nuclear translocation. Nevertheless, these melatonin-induced changes are abrogated by compound C. In addition, ML-385, an Nrf2 inhibitor, also withdraws the antioxidative effects of melatonin but has little effect on AMPK activation. In conclusion, our results demonstrate that melatonin alleviates myocardial I/R injury by inhibiting oxidative stress via the AMPK/Nrf2 signalling pathway.
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Affiliation(s)
- Chennian Xu
- Department of Cardiovascular SurgeryGeneral Hospital of Northern Theater CommandShenyangChina
- Department of UltrasoundChinese PLA 985 HospitalTaiyuanChina
| | - Jian Wang
- Department of UltrasoundChinese PLA 985 HospitalTaiyuanChina
| | - Zhenge Fan
- Department of Cardiovascular SurgeryXijing HospitalAir Force Medical UniversityXi'anChina
| | - Shuang Zhang
- Department of AnesthesiologyXi'an Children's HospitalXi'anChina
| | - Rui Qiao
- Department of Cardiovascular SurgeryGeneral Hospital of Northern Theater CommandShenyangChina
| | - Yu Liu
- Department of Cardiovascular SurgeryGeneral Hospital of Northern Theater CommandShenyangChina
| | - Jian Yang
- Department of Cardiovascular SurgeryXijing HospitalAir Force Medical UniversityXi'anChina
| | - Lifang Yang
- Department of AnesthesiologyXi'an Children's HospitalXi'anChina
| | - Huishan Wang
- Department of Cardiovascular SurgeryGeneral Hospital of Northern Theater CommandShenyangChina
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Li X, Leng Y, Jiang Q, Wang Z, Luo P, Zhang C, Chen L, Wang Y, Wang H, Yue X, Shen C, Zhou Y, Shi C, Xie L. Eye Drops of Metformin Prevents Fibrosis After Glaucoma Filtration Surgery in Rats via Activating AMPK/Nrf2 Signaling Pathway. Front Pharmacol 2020; 11:1038. [PMID: 32903813 PMCID: PMC7438907 DOI: 10.3389/fphar.2020.01038] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 06/25/2020] [Indexed: 02/06/2023] Open
Abstract
Metformin has effective therapeutic effects in anti-tumor and anti-fibrotic diseases. However, how the antifibrotic effect of metformin in the eye and how it is transferred are still unclear. Here, the eye drop of metformin treatment was studied in Sprague–Dawley (SD) rats of glaucoma filtrating surgery (GFS). Rats were administered randomly bilateral drops: control group (without surgery), GFS group, metformin group or mitomycin C (MMC) group (sponge application intraoperatively, 0.02%). Bleb features and intraocular pressure (IOP) were assessed for postoperative week 4. Metformin effectively inhibited fibrosis and improved the surgical outcomes of GFS. In vitro, we found that the degree of oxidative stress and fibrosis in metformin pretreated-Human Conjunctival Fibroblasts (HConFs) were reduced; the pro-fibrotic response of HConFs were decreased by inducing macrophagic polarity changes. Besides, the inhibition of nuclear factor erythroid 2-related factor 2 (Nrf2)/AMP-activated protein kinase (AMPK) and the competition of organic cation transporters (OCTs) effectively reduced the anti-fibrotic capability of metformin. Together, this experiment indicates that metformin enters into HConFs cell with OCTs, which can protect against filtrating blebs scar formation in SD rats of GFS via activating AMPK/Nrf2 axis and the downregulation of profibrogenic and inflammatory biomarkers.
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Affiliation(s)
- Xueru Li
- Department of Ophthalmology, The Third Affiliated Hospital of Chongqing Medical University (Gener Hospital), Chongqing, China
| | - Yu Leng
- Department of Ophthalmology, The Third Affiliated Hospital of Chongqing Medical University (Gener Hospital), Chongqing, China
| | - Qingzhi Jiang
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Ziwen Wang
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, China
| | - Peng Luo
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, China
| | - Chi Zhang
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, China
| | - Long Chen
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, China
| | - Yawei Wang
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, China
| | - Huilan Wang
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Xiaofeng Yue
- Department of Urology, The Third Affiliated Hospital of Chongqing Medical University (Gener Hospital), Chongqing, China
| | - Chongxing Shen
- Department of Urology, The Third Affiliated Hospital of Chongqing Medical University (Gener Hospital), Chongqing, China
| | | | - Chunmeng Shi
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, China
| | - Lin Xie
- Department of Ophthalmology, The Third Affiliated Hospital of Chongqing Medical University (Gener Hospital), Chongqing, China
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Li J, Zheng X, Ma X, Xu X, Du Y, Lv Q, Li X, Wu Y, Sun H, Yu L, Zhang Z. Melatonin protects against chromium(VI)-induced cardiac injury via activating the AMPK/Nrf2 pathway. J Inorg Biochem 2019; 197:110698. [PMID: 31054488 DOI: 10.1016/j.jinorgbio.2019.110698] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 04/23/2019] [Accepted: 04/24/2019] [Indexed: 12/11/2022]
Abstract
Chromium (Cr) threatens health by causing oxidative stress. However, effective therapy for cardiac damage mediated by potassium dichromate (K2Cr2O7) still has not been defined. Melatonin (MT) possesses a number of biological activities. Our study was performed to explore the effect and mechanism of MT on Cr(VI)-induced cardiac damage by conducting both in vitro and in vivo studies. Twenty eight male Wistar rats were randomly assigned to four groups: control, MT (20 mg/kg subcutaneously), K2Cr2O7 (4 mg/kg intraperitoneally), and K2Cr2O7 + MT. We measured biomarkers of oxidative stress and cardiac function, and performed histopathological analysis, assay of terminal deoxynucleotidyl transferase-mediated deoxyuracil nucleoside triphosphate nick end labeling and protein levels, and the viability assay of cultured cardiomyocytes in vitro. Our results showed that MT ameliorated K2Cr2O7-induced oxidative stress, apoptosis, and the release of inflammatory mediators in the rat heart. MT also promoted adenosine monophosphate-activated protein kinase (AMPK) phosphorylation, upregulated expression of proteins that nuclear factor erythroid 2-related factor 2 (Nrf2), heme oxygenase-1, and nicotinamide adenine dinucleotide phosphatase: quinone-acceptor 1, and inhibited nuclear factor kappa B in the heart of rats exposed to K2Cr2O7. Furthermore, MT increased B-cell lymphoma gene 2 (Bcl-2) and B-cell lymphoma extra large protein levels and decreased cleaved caspase 3, P53, and Bcl-2-associated X protein levels. Furthermore, the experiment in vitro showed that MT increased the cells viability and protein levels of Nrf2 and phosphorylated-AMPK in H9C2 cells treated with K2Cr2O7. Collectively, our results demonstrate that MT protects against Cr-induced cardiac damage via activating the AMPK/Nrf2 pathway.
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Affiliation(s)
- Jiayi Li
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Xiaoyan Zheng
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Xiangyu Ma
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Xinyue Xu
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Yu Du
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Qingjie Lv
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Xuerui Li
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Yuan Wu
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Hongxing Sun
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Lanjie Yu
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Zhigang Zhang
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China; Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, 600 Changjiang Road, Harbin 150030, China.
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Lv H, Qi Z, Wang S, Feng H, Deng X, Ci X. Asiatic Acid Exhibits Anti-inflammatory and Antioxidant Activities against Lipopolysaccharide and d-Galactosamine-Induced Fulminant Hepatic Failure. Front Immunol 2017; 8:785. [PMID: 28736552 PMCID: PMC5500632 DOI: 10.3389/fimmu.2017.00785] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 06/21/2017] [Indexed: 01/17/2023] Open
Abstract
Inflammation and oxidative stress are essential for the pathogenesis of fulminant hepatic failure (FHF). Asiatic acid (AA), which is a pentacyclic triterpene that widely occurs in various vegetables and fruits, has been reported to possess antioxidant and anti-inflammatory properties. In this study, we investigated the protective effects of AA against lipopolysaccharide (LPS) and d-galactosamine (GalN)-induced FHF and the underlying molecular mechanisms. Our findings suggested that AA treatment effectively protected against LPS/d-GalN-induced FHF by lessening the lethality; decreasing the alanine transaminase and aspartate aminotransferase levels, interleukin (IL)-1β, IL-6, and tumor necrosis factor-α production, malondialdehyde formation, myeloperoxidase level and reactive oxygen species generation (i.e., H2O2, NO, and O2−), and increasing the glutathione and superoxide dismutase contents. Moreover, AA treatment significantly inhibited mitogen-activated protein kinase (MAPK) and nuclear factor-kappa B (NF-κB) signaling pathway activation via the partial induction of programmed cell death 4 (PDCD4) protein expressions, which are involved in inflammatory responses. Furthermore, AA treatment dramatically induced the expression of the glutamate-cysteine ligase modifier subunit, the glutamate-cysteine ligase catalytic subunit, heme oxygenase-1, and NAD (P) H: quinoneoxidoreductase 1 (NQO1), which are largely dependent on activation of the nuclear factor-erythroid 2-related factor 2 (Nrf2) through the induction of AMP-activated protein kinase (AMPK) and glycogen synthase kinase-3β (GSK3β) phosphorylation. Accordingly, AA exhibited protective roles against LPS/d-GalN-induced FHF by inhibiting oxidative stress and inflammation. The underlying mechanism may be associated with the inhibition of MAPK and NF-κB activation via the partial induction of PDCD4 and upregulation of Nrf2 in an AMPK/GSK3β pathway activation-dependent manner.
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Affiliation(s)
- Hongming Lv
- Department of Translational Medicine, The First Hospital of Jilin University, Changchun, China.,Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Zhimin Qi
- Department of Translational Medicine, The First Hospital of Jilin University, Changchun, China.,Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Sisi Wang
- Department of Translational Medicine, The First Hospital of Jilin University, Changchun, China
| | - Haihua Feng
- Department of Translational Medicine, The First Hospital of Jilin University, Changchun, China.,Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xuming Deng
- Department of Translational Medicine, The First Hospital of Jilin University, Changchun, China.,Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xinxin Ci
- Department of Translational Medicine, The First Hospital of Jilin University, Changchun, China
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Zhao C, Zhang Y, Liu H, Li P, Zhang H, Cheng G. Fortunellin protects against high fructose-induced diabetic heart injury in mice by suppressing inflammation and oxidative stress via AMPK/Nrf-2 pathway regulation. Biochem Biophys Res Commun 2017. [PMID: 28624452 DOI: 10.1016/j.bbrc.2017.06.076] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Inflammation and oxidative stress contribute to the progression of diabetic cardiomyopathy (DCM). The study was first designed to calculate the role of an anti-inflammatory and anti-oxidant Fortunellin (For) in high fructose-induced cardiac injury in diabetic mice. Fortunellin was found to be none of toxicity to mice and cells using various assays. High fructose was used to induce mice with diabetes. The heart histopathological changes and cardiac function were measured. Fortunellin significantly attenuated the score of histopathological alterations and alleviated heart function, accompanied with reduced inflammation and oxidative stress. The pro-inflammatory cytokines and the expression of p-IκB kinase α (IKKα), p-IκBα, and p-nuclear factor-κB (NF-κB) were dramatically reduced by Fortunellin, while superoxide dismutase (SOD), catalase (CAT), heme oxygenase-1 (HO-1) and p-AMP-activated protein kinase (AMPK) were significantly enhanced. Moreover, in H9C2 cells with nuclear factor erythroid 2-related factor 2 (Nrf2) knock-down abolished the prevention of Fortunellin against cardiac injury, proved by elevated inflammatory response and oxidative stress. Suppression of p-AMPK reduced the level of Nrf2 and HO-1 induced by Fortunellin, eliminating the protective role of Fortunellin. For the first time, our study suggested that Fortunellin protected against fructose-induced inflammation and oxidative stress by enhancing AMPK/Nrf2 pathway in diabetic mice and cardiomyocytes with fructose treatment.
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Affiliation(s)
- Cuihua Zhao
- Department of Cardiology, Huaihe Hospital of Henan University, Kaifeng 475000, China
| | - Yuan Zhang
- Department of Cardiology, Huaihe Hospital of Henan University, Kaifeng 475000, China
| | - Hongyang Liu
- Department of Cardiology, Huaihe Hospital of Henan University, Kaifeng 475000, China
| | - Peng Li
- Department of Cardiology, Huaihe Hospital of Henan University, Kaifeng 475000, China
| | - Han Zhang
- Department of Cardiology, Huaihe Hospital of Henan University, Kaifeng 475000, China
| | - Guanchang Cheng
- Department of Cardiology, Huaihe Hospital of Henan University, Kaifeng 475000, China.
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