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Li XL, Yu F, Li BY, Fu CL, Yu X, Xu M, Cheng M, Gao HQ. The protective effects of grape seed procyanidin B2 against asporin mediates glycated low-density lipoprotein induced-cardiomyocyte apoptosis and fibrosis. Cell Biol Int 2020; 44:268-277. [PMID: 31498521 DOI: 10.1002/cbin.11229] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 08/31/2019] [Indexed: 01/24/2023]
Abstract
The progression of diabetic cardiomyopathy is related to cardiomyocyte dysfunction and apoptosis. Our previous studies showed that asporin (ASPN) was significantly increased in the myocardium of db/db mice through proteomics, and grape seed procyanidin B2 (GSPB2) significantly inhibited the expression of ASPN in the heart of db/db mice. We report here that ASPN played a critical role in glycated low-density lipoproteins (gly-LDL) induced-cardiomyocyte apoptosis. We found that gly-LDL upregulated ASPN expression. ASPN increased H9C2 cardiomyocyte apoptosis with down-regulation of Bcl-2, upregulation of transforming growth factor-β1, Bax, collagen III, fibronectin, and phosphorylation of smad2 and smad3. However, GSPB2 treatment reversed ASPN-induced impairments in H9C2 cardiomyocytes. These results provide evidence for the cardioprotective action of GSPB2 against ASPN injury, and thus suggest a new target for fighting against diabetic cardiomyopathy.
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Affiliation(s)
- Xiao-Li Li
- Department of Drug Purchase and Supply, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, Shandong Province, 250012, China
| | - Fei Yu
- Department of Geriatric Medicine, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, Shandong Province, 250012, China.,Key Laboratory of Cardiovascular Proteomics of Shandong Province, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, Shandong Province, 250012, China
| | - Bao-Ying Li
- Department of Geriatric Medicine, Bai-Ren Hospital of Weinan, Middle Section of Letian Street, Weinan, Shanxi Province, 714000, China
| | - Chun-Li Fu
- Department of Geriatric Medicine, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, Shandong Province, 250012, China.,Key Laboratory of Cardiovascular Proteomics of Shandong Province, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, Shandong Province, 250012, China
| | - Xin Yu
- Department of Geriatric Medicine, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, Shandong Province, 250012, China.,Key Laboratory of Cardiovascular Proteomics of Shandong Province, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, Shandong Province, 250012, China
| | - Mei Xu
- Department of Geriatric Medicine, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, Shandong Province, 250012, China.,Key Laboratory of Cardiovascular Proteomics of Shandong Province, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, Shandong Province, 250012, China
| | - Mei Cheng
- Department of Geriatric Medicine, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, Shandong Province, 250012, China.,Key Laboratory of Cardiovascular Proteomics of Shandong Province, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, Shandong Province, 250012, China
| | - Hai-Qing Gao
- Department of Geriatric Medicine, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, Shandong Province, 250012, China.,Key Laboratory of Cardiovascular Proteomics of Shandong Province, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, Shandong Province, 250012, China
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Characterisation of the Morphological, Functional and Molecular Changes in Sunitinib-Resistant Renal Cell Carcinoma Cells. J Kidney Cancer VHL 2018; 5:1-9. [PMID: 30109169 PMCID: PMC6088203 DOI: 10.15586/jkcvhl.2018.106] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Accepted: 07/16/2018] [Indexed: 12/12/2022] Open
Abstract
Sunitinib resistance is a major clinical problem hampering the treatment of renal cell carcinoma (RCC). Studies on the comprehensive characterisation of morphological, functional and molecular changes in sunitinib-resistant RCC cells are lacking. The aim of the current study was to develop sunitinib resistance in four human RCC cell lines (786-0, Caki-1, Caki-2 and SN12K1), and to characterise the changed cell biology with sunitinib resistance. RCC cells were made resistant by continuous, chronic exposure to 10 μM of sunitinib over a period of 12 months. Cell proliferation, morphology, transmigration, and gene expression for interleukin-6 (IL-6), interleukin-8 (IL-8), vascular endothelial growth factor (VEGF), Bcl-2 and Bax were studied. There was no significant difference in growth rate or transmigration between the parental and resistant cells. Sunitinib-resistant cells were significantly hypertrophic compared with parental cells as evidenced by increases in the surface areas of the whole cells and the nuclei. IL-6 was significantly increased in all resistant cells. IL-8 was increased in sunitinib-resistant Caki-2 and SN12K1 cells and decreased in 786-0 without any significant changes in Caki-1. VEGF was increased in resistant Caki-2 and SN12K1 cells but not in 786-0 and Caki-1. The Bcl2/Bax ratio was increased in Caki-1, Caki-2 and SN12K1 cells but decreased in 786-0 cells. The increased IL-6 may contribute to sunitinib resistance either via VEGF-mediated angiogenesis or through shifting of the Bcl2/Bax balance in favour of anti-apoptosis.
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Pioglitazone Protected against Cardiac Hypertrophy via Inhibiting AKT/GSK3β and MAPK Signaling Pathways. PPAR Res 2016; 2016:9174190. [PMID: 27110236 PMCID: PMC4826695 DOI: 10.1155/2016/9174190] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 02/29/2016] [Indexed: 01/01/2023] Open
Abstract
Peroxisome proliferator activated receptor γ (PPARγ) has been closely involved in the process of cardiovascular diseases. This study was to investigate whether pioglitazone (PIO), a PPARγ agonist, could protect against pressure overload-induced cardiac hypertrophy. Mice were orally given PIO (2.5 mg/kg) from 1 week after aortic banding and continuing for 7 weeks. The morphological examination and biochemical analysis were used to evaluate the effects of PIO. Neonatal rat ventricular cardiomyocytes were also used to verify the protection of PIO against hypertrophy in vitro. The results in our study demonstrated that PIO remarkably inhibited hypertrophic response induced by aortic banding in vivo. Besides, PIO also suppressed cardiac fibrosis in vivo. PIO treatment also inhibited the activation of protein kinase B (AKT)/glycogen synthase kinase-3β (GSK3β) and mitogen-activated protein kinase (MAPK) in the heart. In addition, PIO alleviated angiotensin II-induced hypertrophic response in vitro. In conclusion, PIO could inhibit cardiac hypertrophy via attenuation of AKT/GSK3β and MAPK pathways.
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Shahzad M, Small DM, Morais C, Wojcikowski K, Shabbir A, Gobe GC. Protection against oxidative stress-induced apoptosis in kidney epithelium by Angelica and Astragalus. JOURNAL OF ETHNOPHARMACOLOGY 2016; 179:412-9. [PMID: 26719285 DOI: 10.1016/j.jep.2015.12.027] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 12/06/2015] [Accepted: 12/20/2015] [Indexed: 05/21/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Astragalus membranaceus either alone or in combination with Angelica sinensis has been used traditionally for kidney disease in East Asia and China for thousands of years. Previous studies using in vivo animal models have shown the benefits of these medicinal herbs in kidney diseases that involve oxidative stress. However, the mechanisms by which these medicinal herbs protect kidney cells remain largely unknown. AIM OF THE STUDY To investigate the mechanisms by which ethanol, methanol and aqueous crude extracts of roots of A. membranaceus and A. sinensis afford protection to human kidney proximal tubular epithelial cells, using an in vitro model of oxidative stress. MATERIALS AND METHODS Ethanol, methanol and aqueous extracts of roots of A. membranaceus and A. sinensis were prepared by a three-solvent sequential process. HK2 human kidney proximal tubular epithelial cells were treated with H2O2 alone (0.5mM) or in combination with different concentrations of extracts. Cell mitosis and death (microscopy) and cell viability (MTT assay) were compared. Western immunoblot was used to study expression of apoptosis-related proteins (pro-apoptotic Bax andanti-apoptotic Bcl-XL), and cell survival (NFκB subunits p65 and p50), pro-inflammatory (TNF-α) and protective (TGFβ1) proteins. RESULTS H2O2-induced oxidative stress significantly increased apoptosis and reduced cell survival; upregulated pro-apoptotic and down-regulated Bcl-XL; increased NFκB (p65, p50); increased TNFα and decreased TGFβ1. All changes indicated kidney damage and dysfunction. All were modulated by all extracts of both plant species, except for NFκB which was only modulated by extracts of A. membranaceus. CONCLUSIONS In conclusion, in a model of oxidative stress that might occur after nephrotoxicity, the plant extracts were protective via anti-apoptotic and anti-inflammatory mechanisms.
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Affiliation(s)
- Muhammad Shahzad
- Centre for Kidney Disease Research, School of Medicine, University of Queensland, Translational Research Institute, Brisbane, Australia; Department of Pharmacology, University of Health Sciences, Lahore, Pakistan
| | - David M Small
- Centre for Kidney Disease Research, School of Medicine, University of Queensland, Translational Research Institute, Brisbane, Australia
| | - Christudas Morais
- Centre for Kidney Disease Research, School of Medicine, University of Queensland, Translational Research Institute, Brisbane, Australia
| | - Ken Wojcikowski
- Department of Natural and Complementary Medicine, Southern Cross University, Lismore, Australia
| | - Arham Shabbir
- Department of Pharmacology, University of Health Sciences, Lahore, Pakistan
| | - Glenda C Gobe
- Centre for Kidney Disease Research, School of Medicine, University of Queensland, Translational Research Institute, Brisbane, Australia.
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