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Huang HJ, Lee YH, Sung LC, Chen YJ, Chiu YJ, Chiu HW, Zheng CM. Drug repurposing screens to identify potential drugs for chronic kidney disease by targeting prostaglandin E2 receptor. Comput Struct Biotechnol J 2023; 21:3490-3502. [PMID: 37484490 PMCID: PMC10362296 DOI: 10.1016/j.csbj.2023.07.007] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 07/02/2023] [Accepted: 07/06/2023] [Indexed: 07/25/2023] Open
Abstract
Renal inflammation and fibrosis are significantly correlated with the deterioration of kidney function and result in chronic kidney disease (CKD). However, current therapies only delay disease progression and have limited treatment effects. Hence, the development of innovative therapeutic approaches to mitigate the progression of CKD has become an attractive issue. To date, the incidence of CKD is still increasing, and the biomarkers of the pathophysiologic processes of CKD are not clear. Therefore, the identification of novel therapeutic targets associated with the progression of CKD is an attractive issue. It is a critical necessity to discover new therapeutics as nephroprotective strategies to stop CKD progression. In this research, we focus on targeting a prostaglandin E2 receptor (EP2) as a nephroprotective strategy for the development of additional anti-inflammatory or antifibrotic strategies for CKD. The in silico study identified that ritodrine, dofetilide, dobutamine, and citalopram are highly related to EP2 from the results of chemical database virtual screening. Furthermore, we found that the above four candidate drugs increased the activation of autophagy in human kidney cells, which also reduced the expression level of fibrosis and NLRP3 inflammasome activation. It is hoped that these findings of the four candidates with anti-NLRP3 inflammasome activation and antifibrotic effects will lead to the development of novel therapies for patients with CKD in the future.
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Affiliation(s)
- Hung-Jin Huang
- Division of Nephrology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yu-Hsuan Lee
- Department of Cosmeceutics, China Medical University, Taichung, Taiwan
| | - Li-Chin Sung
- Division of Cardiology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Cardiology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
- Taipei Heart Institute, Taipei Medical University, Taipei, Taiwan
- TMU Research Center of Urology and Kidney, Taipei Medical University, Taipei, Taiwan
| | - Yi-Jie Chen
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yu-Jhe Chiu
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Hui-Wen Chiu
- TMU Research Center of Urology and Kidney, Taipei Medical University, Taipei, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Medical Research, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
- Ph.D. Program in Drug Discovery and Development Industry, College of Pharmacy, Taipei Medical University
| | - Cai-Mei Zheng
- Division of Nephrology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- TMU Research Center of Urology and Kidney, Taipei Medical University, Taipei, Taiwan
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, Taiwan
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2
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Liu WC, Chiu HW, Chou CL, Chiu YJ, Lee YH. Lactoferrin attenuated urban particulate matter-induced nephrotoxicity by regulating the CSF2/CENPE axis. Environ Pollut 2023; 318:120871. [PMID: 36528199 DOI: 10.1016/j.envpol.2022.120871] [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] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/27/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
Several epidemiological studies regarding the adverse effect of air pollution have notably accelerated in recent years. Urban particulate matter (PM) gains access to the respiratory system and translocates into the circulation to affect several tissues, such as the liver and kidneys. Lactoferrin is a substance belonging to the non-heme iron-binding glycoprotein which is present in breast milk and other exocrine fluids. Lactoferrin is protective against many pathophysiological conditions. In the present study, we explored the potential influence of lactoferrin on PM-induced nephrotoxicity. We found that lactoferrin rescued PM-induced cell death but did not affect apoptosis in human kidney cells. Lactoferrin decreased necroptosis and fibrosis but increased autophagy in human kidney cells. Furthermore, the gene expression profiles of PM and lactoferrin were analyzed by RNA sequencing. The transcriptional profiles were uploaded and analyzed by ingenuity pathway analysis software and gene set enrichment analysis. The results showed that the crucial role of the CSF2/CENPE pathway was involved in human kidney cells treated with PM and lactoferrin. In a mouse model, lactoferrin ameliorates PM-induced nephrotoxicity by regulating necroptosis, fibrosis, autophagy and the CSF2/CENPE axis. In summary, these findings showed that lactoferrin could be a novel therapeutic or preventive agent for renal disorders caused by airborne PM pollution.
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Affiliation(s)
- Wen-Chih Liu
- Department of Biology and Anatomy, National Defense Medical Center, Taipei, Taiwan; Section of Nephrology, Department of Medicine, Antai Medical Care Corporation Antai Tian-Sheng Memorial Hospital, Pingtung, Taiwan
| | - Hui-Wen Chiu
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Department of Medical Research, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan; TMU Research Center of Urology and Kidney, Taipei Medical University, Taipei, Taiwan
| | - Chu-Lin Chou
- TMU Research Center of Urology and Kidney, Taipei Medical University, Taipei, Taiwan; Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Division of Nephrology, Department of Internal Medicine, Hsin Kuo Min Hospital, Taipei Medical University, Taoyuan City, Taiwan; Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Yu-Jhe Chiu
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yu-Hsuan Lee
- Department of Cosmeceutics, China Medical University, Taichung, Taiwan.
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3
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Liu WC, Chuang HC, Chou CL, Lee YH, Chiu YJ, Wang YL, Chiu HW. Cigarette Smoke Exposure Increases Glucose-6-phosphate Dehydrogenase, Autophagy, Fibrosis, and Senescence in Kidney Cells In Vitro and In Vivo. Oxid Med Cell Longev 2022; 2022:5696686. [PMID: 35387262 PMCID: PMC8977288 DOI: 10.1155/2022/5696686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 02/25/2022] [Accepted: 03/02/2022] [Indexed: 11/17/2022]
Abstract
Cigarette smoke (CS) is a risk factor for chronic obstructive pulmonary disease. We attempted to investigate fully the possible effects of CS on kidney cells. We found that the viability of a human kidney proximal tubular epithelial cell line (HK-2 cells) was decreased after treatment with CS extract (CSE). In particular, the effects of CSE at low concentrations did not change the expression of apoptosis and necrosis. Furthermore, CSE increased autophagy- and fibrosis-related proteins in HK-2 cells. Senescence-related proteins and the senescence-associated secretory phenotype (SASP) increased after HK-2 cells were treated with CSE. In addition, both RNA sequencing and gene set enrichment analysis data revealed that glucose-6-phosphate dehydrogenase (G6PD) in the reactive oxygen species (ROS) pathway is responsible for the changes in CSE-treated HK-2 cells. CSE increased G6PD expression and its activity. Moreover, the inhibition of G6PD activity increased senescence in HK-2 cells. The inhibition of autophagy reinforced senescence in the CSE-treated cells. In a mouse model of CS exposure, CS caused kidney damage, including tubular injury and glomerulosclerosis. CS increased fibrosis, autophagy, and G6PD expression in kidney tissue sections. In conclusion, CS induced G6PD expression, autophagy, fibrosis, and senescence in kidney cells. G6PD has a protective role in CS-induced nephrotoxicity.
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Affiliation(s)
- Wen-Chih Liu
- Division of Nephrology, Department of Internal Medicine, Taipei Hospital, Ministry of Health and Welfare, New Taipei City, Taiwan
- Department of Biology and Anatomy, National Defense Medical Center, Taipei, Taiwan
| | - Hsiao-Chi Chuang
- School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Chu-Lin Chou
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
- Division of Nephrology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- TMU Research Center of Urology and Kidney, Taipei Medical University, Taipei, Taiwan
- Division of Nephrology, Department of Internal Medicine, Hsin Kuo Min Hospital, Taipei Medical University, Taoyuan City, Taiwan
| | - Yu-Hsuan Lee
- Department of Cosmeceutics, China Medical University, Taichung, Taiwan
| | - Yu-Jhe Chiu
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yung-Li Wang
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Hui-Wen Chiu
- TMU Research Center of Urology and Kidney, Taipei Medical University, Taipei, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Medical Research, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
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Yiu CY, Chiu YJ, Lin TP. The Ethyl Acetate Subfraction of Polygonum cuspidatum Root Containing Emodin Affect EBV Gene Expression and Induce EBV-Positive Cells Apoptosis. Biol Pharm Bull 2021; 44:1837-1842. [PMID: 34615812 DOI: 10.1248/bpb.b21-00508] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 11/22/2022]
Abstract
Epstein-Barr virus (EBV), a human herpesvirus, is several human lymphoid malignancies-associated. Our earlier study found the effect of Polygonum cuspidatum root on promoting EBV-positive apoptosis. Therefore, this study investigated the effects of the Polygonum cuspidatum ethyl acetate subfraction containing emodin on EBV gene expression and anti-EBV tumor cells. Resultantly, the the Polygonum cuspidatum ethyl acetate subfraction containing emodin (F3a) promoted Raji cell death (50% cytotoxic concentration, CC50: 12.08 µg/mL); the 12.5 µg/mL F3a effect transcribed BRLF1 and BNLF1 and increased latent membrane protein 1 (LMP1), which may reduce the intracellular phospho-extracellular signal-regulated kinase (ERK) and phospho-inhibitor of Nuclear factor kappa B α (IκBα). Meanwhile, the Raji cells increased the intracellular reactive-oxygen species (ROS), activated the apoptosis-related proteins, cleaved caspase 3 and poly(ADP-ribose)polymerase (PARP), and increased the apoptosis percentage. Therefore, the Polygonum cuspidatum ethyl acetate subfraction containing emodin could be a therapeutic drug for EBV-related tumors.
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Affiliation(s)
- Ching-Yi Yiu
- Department of Health and Nutrition, Chia-Nan University of Pharmacy and Science.,Department of Otolaryngology, Chi Mei Medical Center
| | - Yu-Jhe Chiu
- Department of Health and Nutrition, Chia-Nan University of Pharmacy and Science
| | - Tsuey-Pin Lin
- Department of Health and Nutrition, Chia-Nan University of Pharmacy and Science
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Zheng CM, Lee YH, Chiu IJ, Chiu YJ, Sung LC, Hsu YH, Chiu HW. Nicotine Causes Nephrotoxicity through the Induction of NLRP6 Inflammasome and Alpha7 Nicotinic Acetylcholine Receptor. Toxics 2020; 8:toxics8040092. [PMID: 33114531 PMCID: PMC7711477 DOI: 10.3390/toxics8040092] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 10/16/2020] [Accepted: 10/20/2020] [Indexed: 12/20/2022]
Abstract
Current cigarette smoking is associated with chronic kidney disease (CKD) or death from end-stage renal disease (ESRD). Mainstream cigarette smoke includes over 4000 compounds. Among the compounds present in tobacco smoke, nicotine is one of a large number of biologically stable and active compounds present in tobacco. However, the mechanisms by which nicotine exacerbates kidney disease progression have not been identified. It is known that the inflammasomes constitute an important innate immune pathway and contribute to the pathophysiology of diverse kidney diseases. The relationship between inflammasomes and nicotine-induced kidney damage still remains unclear. In the present study, we studied the mechanisms of nicotine-induced nephrotoxicity. We found that nicotine decreased cell viability and induced reactive oxygen species (ROS) generation in human kidney cells. Furthermore, nicotine significantly increased the expression of the alpha7 nicotinic acetylcholine receptor (α7nAChR). Nicotine activated the NLRP6 inflammasome and induced endoplasmic reticulum (ER) stress. Nicotine caused mild apoptosis and necrosis but triggered significant autophagy in human kidney cells. In addition, nicotine induced the NLRP6 inflammasome and autophagy via α7nAChR. In an animal model, the histological analysis in kidney showed evident changes and injury. The results indicated that α7nAChR, IRE1α, LC3 and NLRP6 expression in kidney sections was markedly increased in the nicotine groups. These findings suggest that nicotine causes kidney damage by modulating α7nAChR, NLRP6 inflammasome, ER stress and autophagy.
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Affiliation(s)
- Cai-Mei Zheng
- Division of Nephrology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan;
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan; (I.-J.C.); (Y.-J.C.)
- TMU Research Center of Urology and Kidney, Taipei Medical University, Taipei 11031, Taiwan
| | - Yu-Hsuan Lee
- Department of Cosmeceutics, China Medical University, Taichung 40604, Taiwan;
| | - I-Jen Chiu
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan; (I.-J.C.); (Y.-J.C.)
- TMU Research Center of Urology and Kidney, Taipei Medical University, Taipei 11031, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Yu-Jhe Chiu
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan; (I.-J.C.); (Y.-J.C.)
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Li-Chin Sung
- Division of Cardiology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan;
- Division of Cardiology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan
- Taipei Heart Institute, Taipei Medical University, Taipei 11031, Taiwan
| | - Yung-Ho Hsu
- Division of Nephrology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan;
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan; (I.-J.C.); (Y.-J.C.)
- TMU Research Center of Urology and Kidney, Taipei Medical University, Taipei 11031, Taiwan
- Correspondence: (Y.-H.H.); (H.-W.C.); Tel.: +886-2-22490088 (ext. 8156) (Y.-H.H.); +886-2-22490088 (ext. 8884) (H.-W.C.)
| | - Hui-Wen Chiu
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan; (I.-J.C.); (Y.-J.C.)
- TMU Research Center of Urology and Kidney, Taipei Medical University, Taipei 11031, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Correspondence: (Y.-H.H.); (H.-W.C.); Tel.: +886-2-22490088 (ext. 8156) (Y.-H.H.); +886-2-22490088 (ext. 8884) (H.-W.C.)
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6
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Weng YT, Chiu YJ, Chung LH, Hsieh YY, Chen TY, Chen CS. Effects of Au-Fe Nanocluster on Neuron Differentiation with Electric Stimulation. Biophys J 2020. [DOI: 10.1016/j.bpj.2019.11.2537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Cheng FY, Lee YH, Hsu YH, Chiu IJ, Chiu YJ, Lin YF, Chiu HW. Promising therapeutic effect of thapsigargin nanoparticles on chronic kidney disease through the activation of Nrf2 and FoxO1. Aging (Albany NY) 2019; 11:9875-9892. [PMID: 31714893 PMCID: PMC6874456 DOI: 10.18632/aging.102437] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 08/18/2019] [Accepted: 10/29/2019] [Indexed: 12/23/2022]
Abstract
Pathophysiological states cause misfolded protein accumulation in the endoplasmic reticulum (ER). Then, ER stress and the unfolded protein response (UPR) are activated. Targeting ER stress may enhance the adaptive UPR and then protect the cell against pathogenic environments. In the present study, we utilized nanotechnology to synthesize thapsigargin nanoparticles (TG NPs) which induced ER stress and the UPR pathway, to study the role of ER stress and autophagy in chronic kidney disease (CKD). We found that the mRNA levels of ER stress- and autophagy-related molecules were elevated in the renal tissue of CKD patients compared to those of healthy individuals. Furthermore, TG NPs induced the UPR pathway and autophagy in HK-2 human kidney tubular epithelial cells. TG NPs protected HK-2 cells against oxidative stress-induced cell death through the activation of Nrf2 and FoxO1. The siRNA-mediated inhibition of Nrf2 or FoxO1 resulted in enhanced oxidative stress-induced cytotoxicity in HK-2 cells. In a mouse model of adenine diet-induced CKD, TG NPs and KIM-1-TG NPs ameliorated renal injury through the stimulation of ER stress and its downstream pathways. Our findings suggest that the induction of ER stress using pharmacological agents may offer a promising therapeutic strategy for preventing or interfering with CKD progression.
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Affiliation(s)
- Fong-Yu Cheng
- Department of Chemistry, Chinese Culture University, Taipei, Taiwan
| | - Yu-Hsuan Lee
- Department of Cosmeceutics, China Medical University, Taichung, Taiwan.,Department of Food Safety/Hygiene and Risk Management, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yung-Ho Hsu
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.,Division of Nephrology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - I-Jen Chiu
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.,Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yu-Jhe Chiu
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.,Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yuh-Feng Lin
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.,Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Hui-Wen Chiu
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.,Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
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Hsu YH, Chuang HC, Lee YH, Lin YF, Chiu YJ, Wang YL, Wu MS, Chiu HW. Induction of Fibrosis and Autophagy in Kidney Cells by Vinyl Chloride. Cells 2019; 8:cells8060601. [PMID: 31212930 PMCID: PMC6627785 DOI: 10.3390/cells8060601] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 06/13/2019] [Accepted: 06/14/2019] [Indexed: 02/07/2023] Open
Abstract
Vinyl chloride (VC) is a noninfective occupational risk factor. It is found in industrial chemicals, volatile organic compounds, cigarette smoke ingredients, etc. It is a kind of toxic gas that causes many diseases. VC exposure causes an increased risk of liver fibrosis and can result in angiosarcoma of the liver. Previous studies have shown that high-doses of VC exposure in mice resulted in acute death with marked tubular necrosis of the renal cortex. In this study, we assessed the nephrotoxicity of VC in vitro and in vivo. As a result, we demonstrated that VC induced fibrosis-associated protein expression, such as connective tissue growth factor (CTGF), plasminogen activator inhibitor-1 (PAI-1) and collagen 1, and autophagy-associated protein expression, such as Beclin 1 and LC3-II, in kidney cells. The beclin1 siRNA experiments found that autophagy inhibited VC-induced fibrosis. Blood urea nitrogen (BUN) and creatinine levels were increased after VC treatment. Furthermore, VC caused glomerulosclerosis and tubular injury in mouse kidney tissues. Kidney tissue sections showed that VC induced fibrosis and autophagy in mouse kidney tissues. In summary, the results of VC-induced fibrosis suggest that autophagy plays an important role in kidney damage. VC may cause nephrotoxicity, and the results illustrate the importance of considering the toxicological hazards of VC in kidney cells.
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Affiliation(s)
- Yung-Ho Hsu
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan.
- Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.
| | - Hsiao-Chi Chuang
- School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan.
- School of Public Health, College of Public Health, Taipei Medical University, Taipei 11031, Taiwan.
| | - Yu-Hsuan Lee
- Department of Food Safety/Hygiene &Risk Management, College of Medicine, National Cheng Kung University, Tainan 70430, Taiwan.
| | - Yuh-Feng Lin
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan.
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.
| | - Yu-Jhe Chiu
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan.
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.
| | - Yung-Li Wang
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.
| | - Mai-Szu Wu
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan.
- Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.
| | - Hui-Wen Chiu
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan.
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.
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Hsu YH, Lin YF, Chen CH, Chiu YJ, Chiu HW. Far infrared promotes wound healing through activation of Notch1 signaling. J Mol Med (Berl) 2017; 95:1203-1213. [PMID: 28831511 DOI: 10.1007/s00109-017-1580-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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: 06/28/2017] [Revised: 08/01/2017] [Accepted: 08/14/2017] [Indexed: 01/22/2023]
Abstract
The Notch signaling pathway is critically involved in cell proliferation, differentiation, development, and homeostasis. Far infrared (FIR) has an effect that promotes wound healing. However, the underlying molecular mechanisms are unclear. In the present study, we employed in vivo and HaCaT (a human skin keratinocyte cell line) models to elucidate the role of Notch1 signaling in FIR-promoted wound healing. We found that FIR enhanced keratinocyte migration and proliferation. FIR induced the Notch1 signaling pathway in HaCaT cells and in a microarray dataset from the Gene Expression Omnibus database. We next determined the mRNA levels of NOTCH1 in paired normal and wound skin tissues derived from clinical patients using the microarray dataset and Ingenuity Pathway Analysis software. The result indicated that the Notch1/Twist1 axis plays important roles in wound healing and tissue repair. In addition, inhibiting Notch1 signaling decreased the FIR-enhanced proliferation and migration. In a full-thickness wound model in rats, the wounds healed more rapidly and the scar size was smaller in the FIR group than in the light group. Moreover, FIR could increase Notch1 and Delta1 in skin tissues. The activation of Notch1 signaling may be considered as a possible mechanism for the promoting effect of FIR on wound healing. FIR stimulates keratinocyte migration and proliferation. Notch1 in keratinocytes has an essential role in FIR-induced migration and proliferation. NOTCH1 promotes TWIST1-mediated gene expression to assist wound healing. FIR might promote skin wound healing in a rat model. KEY MESSAGES FIR stimulates keratinocyte migration and proliferation. Notch1 in keratinocytes has an essential role in FIR-induced migration and proliferation. NOTCH1 promotes TWIST1-mediated gene expression to assist wound healing. FIR might promote skin wound healing in a rat model.
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Affiliation(s)
- Yung-Ho Hsu
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei, Taiwan.,Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yuan-Feng Lin
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, 250 Wuxing Street, Taipei, 110, Taiwan
| | - Cheng-Hsien Chen
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei, Taiwan.,Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Division of Nephrology, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University Taipei, Taipei, Taiwan
| | - Yu-Jhe Chiu
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei, Taiwan
| | - Hui-Wen Chiu
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei, Taiwan. .,Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, 250 Wuxing Street, Taipei, 110, Taiwan.
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10
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Chiu YJ, Chi A, Reid IA. Effect of blockade of nitric oxide synthesis on renin secretion in human subjects. Clin Exp Hypertens 1999; 21:1111-27. [PMID: 10513831 DOI: 10.3109/10641969909052192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Nitric oxide (NO) has been implicated in the control of renin secretion in experimental animals but little information is available concerning its role in humans. The aim of the present study was to investigate the effects of inhibition of NO synthesis on resting renin secretion and on the renin secretory responses to activation of the macula densa and sympathetic neural mechanisms controlling renin secretion. In eight healthy subjects, injection of furosemide increased plasma renin activity (PRA) with little or no change in blood pressure or heart rate. Injection of the NO synthase inhibitor L-NMMA increased blood pressure and decreased heart rate and PRA, but failed to alter the PRA response to furosemide. In another ten subjects, standing increased PRA. L-NMMA again decreased PRA but failed to alter the PRA response to standing. These results suggest that NO participates in the regulation of resting renin secretion in humans, and provide preliminary evidence that NO does not contribute significantly to the renin responses to activation of the macula densa or sympathetic mechanisms controlling renin secretion.
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Affiliation(s)
- Y J Chiu
- YJ Chiu General Hospital, Kaohsiung, Taiwan
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Chiu YJ, Hu SH, Reid IA. Inhibition of phosphodiesterase III with milrinone increases renin secretion in human subjects. J Pharmacol Exp Ther 1999; 290:16-9. [PMID: 10381754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023] Open
Abstract
One of the major signaling molecules involved in the regulation of renin secretion is cyclic AMP (cAMP). The concentration of cAMP in cells is determined in part by the rate of cAMP hydrolysis by several families of phosphodiesterases, especially the phosphodiesterase III family, but little is known about the roles of these enzymes in the control of renin secretion, particularly in humans. The aim of the present study was to investigate the effect of the phosphodiesterase III inhibitor milrinone on renin secretion in human subjects. Milrinone was infused i.v. in eight healthy normotensive subjects in a dose of 100 microgram/kg. Immediately after the infusion, there was a transient increase in systolic pressure from 107 +/- 5 to 116 +/- 5 mm Hg (p <.01), but no significant change in diastolic or mean arterial pressure. Heart rate increased from 67 +/- 2 to 86 +/- 4 beats/min (p <.01) and remained elevated. Plasma renin activity increased in all subjects, the mean value increasing from 3.0 +/- 0.5 to 6.0 +/- 1.1 ng/ml/h at 15 min (p <.01). These results demonstrate that milrinone increases renin secretion in human subjects, thus providing evidence that phosphodiesterase III family participates in the control of renin secretion in humans. The increase in renin secretion does not appear to be mediated by major mechanisms that control renin secretion, and likely results from an increase in cAMP concentration in the juxtaglomerular cells.
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Affiliation(s)
- Y J Chiu
- Y.J. Chiu General Hospital, Kaohsiung, Taiwan
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Abstract
It has been reported that acupuncture can decrease blood pressure in patients with hypertension, possibly by an endocrine mechanism. The aim of the present study was to investigate the effects of acupuncture on arterial blood pressure and the secretion of renin, vasopressin and cortisol in hypertensive patients. Acupuncture was performed in fifty untreated essential hypertensive patients resting in the supine position. Thirty min after acupuncture there were decreases in systolic pressure from 169 +/- 2 to 151 +/- 2 mm Hg, diastolic pressure from 107 +/- 1 to 96 +/- 1 mm Hg, and heart rate from 77 +/- 2 to 72 +/- 2 bpm (P < 0.01). Plasma renin activity decreased from 1.7 +/- 0.4 to 1.1 +/- 0.2 ng/ml/2h (P < 0.01), but there were no significant changes in plasma vasopressin or cortisol concentrations. These results confirm that acupuncture decreases blood pressure in hypertensive patients, and suggest that the decrease results, at least in part, from a decrease in renin secretion.
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Affiliation(s)
- Y J Chiu
- Chiu General Hospital, Kaohsiung, Taiwan
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Abstract
Research during recent years has established nitric oxide as a unique signaling molecule that plays important roles in the regulation of the cardiovascular, nervous, renal, immune and other systems. Nitric oxide has also been implicated in the control of the secretion of hormones by the pancreas, hypothalamus, pituitary and other endocrine glands, and evidence is accumulating that it contributes to the regulation of the secretion of renin by the kidneys. The enzyme nitric oxide synthetase is present in vascular and tubular elements of the kidney, particularly in cells of the macula densa, a structure that plays an important role in the control of renin secretion. Guanylyl cyclase, a major target for nitric oxide, is also present in the kidney and is responsive to changes in nitric oxide levels. Drugs that inhibit nitric oxide synthesis generally suppress renin release in vivo and in vitro, suggesting a stimulatory role for the L-arginine-nitric oxide pathway in the control of renin secretion. Under some conditions, however, blockade of nitric oxide synthesis increases renin secretion. Recent studies indicate that nitric oxide not only contributes to the regulation of basal renin secretion, but also participates in the renin secretory responses to activation of the renal baroreceptor, macula densa and beta adrenoceptor mechanisms that regulate renin secretion. Future research should clarify the mechanisms by which nitric oxide regulates the secretion of renin and establish the physiological significance of this regulation.
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Affiliation(s)
- I A Reid
- Department of Physiology, University of California, San Francisco 94143-0444, USA
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Hall AL, Kloepper R, Zee-Cheng RK, Chiu YJ, Lee FC, Olson RE. Mechanism of action of t-butyl hydroperoxide in the inhibition of vitamin K-dependent carboxylation. Arch Biochem Biophys 1982; 214:45-50. [PMID: 7082011 DOI: 10.1016/0003-9861(82)90006-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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