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Xu Z, Zhang S, Han T, Cai L, Zhong S, Yang X, Zhang S, Li Y, Liu K, Zhou B, Tian X. Continuous genetic monitoring of transient mesenchymal gene activities in distal tubule and collecting duct epithelial cells during renal fibrosis. J Cell Biochem 2024; 125:e30541. [PMID: 38372186 DOI: 10.1002/jcb.30541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/24/2024] [Accepted: 02/06/2024] [Indexed: 02/20/2024]
Abstract
Epithelial cells (ECs) have been proposed to contribute to myofibroblasts or fibroblasts through epithelial-mesenchymal transition (EMT) during renal fibrosis. However, since EMT may occur dynamically, transiently, and reversibly during kidney fibrosis, conventional lineage tracing based on Cre-loxP recombination in renal ECs could hardly capture the transient EMT activity, yielding inconsistent results. Moreover, previous EMT research has primarily focused on renal proximal tubule ECs, with few reports of distal tubules and collecting ducts. Here, we generated dual recombinases-mediated genetic lineage tracing systems for continuous monitoring of transient mesenchymal gene expression in E-cadherin+ and EpCAM+ ECs of distal tubules and collecting ducts during renal fibrosis. Activation of key EMT-inducing transcription factor (EMT-TF) Zeb1 and mesenchymal markers αSMA, vimentin, and N-cadherin, were investigated following unilateral ureteral obstruction (UUO). Our data revealed that E-cadherin+ and EpCAM+ ECs did not transdifferentiate into myofibroblasts, nor transiently expressed these mesenchymal genes during renal fibrosis. In contrast, in vitro a large amount of cultured renal ECs upregulated mesenchymal genes in response to TGF-β, a major inducer of EMT.
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Affiliation(s)
- Zihang Xu
- Key Laboratory of Regenerative Medicine of Ministry of Education, Department of Developmental & Regenerative Biology, College of Life Science and Technology, Jinan University, Guangzhou, China
- Obstetrics and Gynecology Hospital, Institute of Reproduction and Development, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Reproduction and Development, Shanghai, China
| | - Shaotong Zhang
- Key Laboratory of Regenerative Medicine of Ministry of Education, Department of Developmental & Regenerative Biology, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Tingting Han
- Key Laboratory of Regenerative Medicine of Ministry of Education, Department of Developmental & Regenerative Biology, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Letong Cai
- Key Laboratory of Regenerative Medicine of Ministry of Education, Department of Developmental & Regenerative Biology, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Simin Zhong
- Key Laboratory of Regenerative Medicine of Ministry of Education, Department of Developmental & Regenerative Biology, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Xiaojie Yang
- Key Laboratory of Regenerative Medicine of Ministry of Education, Department of Developmental & Regenerative Biology, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Shaohua Zhang
- State Key Laboratory of Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai Institute of Biochemistry and Cell Biology, University of Chinese Academy of Sciences, Shanghai, China
| | - Yan Li
- State Key Laboratory of Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai Institute of Biochemistry and Cell Biology, University of Chinese Academy of Sciences, Shanghai, China
| | - Kuo Liu
- Key Laboratory of Systems Health Science of Zhejiang Province, School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China
| | - Bin Zhou
- State Key Laboratory of Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai Institute of Biochemistry and Cell Biology, University of Chinese Academy of Sciences, Shanghai, China
- Key Laboratory of Systems Health Science of Zhejiang Province, School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
- New Cornerstone Science Laboratory, Shenzhen, China
| | - Xueying Tian
- Obstetrics and Gynecology Hospital, Institute of Reproduction and Development, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Reproduction and Development, Shanghai, China
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Sadeghmanesh F, Eidi A, Mortazavi P, Oryan S. Nanoselenium attenuates renal ischemia-reperfusion injury in rats. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024; 397:2297-2310. [PMID: 37819388 DOI: 10.1007/s00210-023-02723-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 09/13/2023] [Indexed: 10/13/2023]
Abstract
Using selenium (Se) nanoparticles has received attention in recent years because of their therapeutic benefits due to their anticancer, antioxidant, anti-inflammatory, and anti-diabetic effects. This research was conducted to evaluate the possible protective impact of nano-Se on renal unilateral ischemia/reperfusion injury (uIRI) in adult male Wistar rats. Using clamping of the left renal pedicle within 45 min uIRI was induced. The animals were randomly divided into nine groups of control, nano-Se (0.25, 0.5, and 1 mg/kg bw/day) alone, uIRI control, and uIRI rats administrated with nano-Se. At 30 days after treatment, the animals were sacrificed to be assessed biochemically and histopathologically. Nano-Se in uIRI groups have significantly decreased serum creatinine, urea levels, renal histological damage, and increased antioxidant status. Also, our findings demonstrated that the administration of nano-Se caused a significant decrease in the immunoreactivity level of the epidermal growth factor (EGF) and EGFR expression (EGF receptor) in the renal tissue of the uIRI rats. Therefore, nano-Se possesses renoprotective effects, and this effect might be attributable to its antioxidant and free radical scavenger effects. These renoprotective effects may depend on the decreased EGF immunoreactivity level and EGFR expression in the kidney tissue and improve the structure of the kidney tissue. Thus, our research provided biochemical and histological data supporting the potential clinical use of nano-Se for the treatment of certain kidney disorders.
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Affiliation(s)
- Farzaneh Sadeghmanesh
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Akram Eidi
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran.
| | - Pejman Mortazavi
- Department of Pathology, Faculty of Specialized Veterinary Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran
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Shashar M, Schwartz D, Zubkov A, Hoffman S, Jankelson L, Shapira S, Merimsky B, Berman J, Chernichovski T, Amitai O, Raz MA, Hershkovitz R, Grupper A, Weinstein T, Arber N, Schwartz IF. Renal Tubular CD24 Upregulation Aggravates Folic Acid Induced Acute Kidney Injury: A Possible Role for T Regulatory Cells Inhibition in Mice. J Pers Med 2023; 13:1134. [PMID: 37511747 PMCID: PMC10381775 DOI: 10.3390/jpm13071134] [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: 05/03/2023] [Revised: 07/06/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023] Open
Abstract
Acute kidney injury (AKI) is characterized by cell death and inflammation. CD24 is a protein induced during tissue damage and is not expressed in mature renal tissue. We explored the role of CD24 in the pathogenesis of folic acid-induced AKI (FA-AKI) in mice. A single Intraperitoneal (IP) injection of folic acid induced AKI in WT and CD24-/- mice. Renal function tests, histological analysis, immunohistochemistry, Western blot analysis, and ELISA were performed to assess the severity of renal damage and the intensity of the inflammatory response. FA-AKI induced CD24 in the distal tubular epithelial cells. Compared to WT mice, FA-AKI CD24-/- mice exhibited an attenuated reduction in renal function and histological injury, lower serum IL-10 and interferon γ, and decreased expression of renal TNFα. In contrast, renal and systemic IL-33 upregulation were augmented. CD24-/- FA-AKI animals exhibited increased splenic margination and renal infiltration of regulatory T cells (Tregs). At day 7, FA-AKI CD24-/- mice exhibited increased expression of tubular pro-apoptotic and decreased anti-apoptotic proteins compared to WT animals. Anti-CD24 antibody administration to FA-AKI mice attenuated the decrease in renal function as well as the histological injury. Renal biopsies from patients with ATN stained strongly for CD24 in the distal tubules. In conclusion, during AKI, upregulation of CD24 promotes renal inflammation through inhibition of Treg infiltration and diversion of cell death towards necrosis rather than apoptosis. Neutralization of CD24 may prove a target for future therapies in AKI.
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Affiliation(s)
- Moshe Shashar
- Departments of Nephrology, Tel Aviv Sourasky Medical Center, 6 Weizmann Street, Tel Aviv 6423906, Israel
- Laniado Hospital, Netanya 4244916, Israel
| | - Doron Schwartz
- Departments of Nephrology, Tel Aviv Sourasky Medical Center, 6 Weizmann Street, Tel Aviv 6423906, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv 6139001, Israel
| | - Asia Zubkov
- Pathology, Tel Aviv Sourasky Medical Center, 6 Weizmann Street, Tel Aviv 6423906, Israel
| | - Sarit Hoffman
- Pathology, Tel Aviv Sourasky Medical Center, 6 Weizmann Street, Tel Aviv 6423906, Israel
| | - Lior Jankelson
- Internal Medicine "T", Tel Aviv Sourasky Medical Center, 6 Weizmann Street, Tel Aviv 6423906, Israel
| | - Shiran Shapira
- The Integrated Cancer Prevention Center, Tel Aviv Sourasky Medical Center, 6 Weizmann Street, Tel Aviv 6423906, Israel
| | - Barak Merimsky
- Departments of Nephrology, Tel Aviv Sourasky Medical Center, 6 Weizmann Street, Tel Aviv 6423906, Israel
| | - Julia Berman
- Internal Medicine "T", Tel Aviv Sourasky Medical Center, 6 Weizmann Street, Tel Aviv 6423906, Israel
| | - Tamara Chernichovski
- Departments of Nephrology, Tel Aviv Sourasky Medical Center, 6 Weizmann Street, Tel Aviv 6423906, Israel
| | - Oeren Amitai
- Departments of Nephrology, Tel Aviv Sourasky Medical Center, 6 Weizmann Street, Tel Aviv 6423906, Israel
| | - Michal Ariela Raz
- Internal Medicine "T", Tel Aviv Sourasky Medical Center, 6 Weizmann Street, Tel Aviv 6423906, Israel
| | - Rami Hershkovitz
- Sackler School of Medicine, Tel Aviv University, Tel Aviv 6139001, Israel
- Internal Medicine "T", Tel Aviv Sourasky Medical Center, 6 Weizmann Street, Tel Aviv 6423906, Israel
| | - Ayelet Grupper
- Departments of Nephrology, Tel Aviv Sourasky Medical Center, 6 Weizmann Street, Tel Aviv 6423906, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv 6139001, Israel
| | - Talia Weinstein
- Departments of Nephrology, Tel Aviv Sourasky Medical Center, 6 Weizmann Street, Tel Aviv 6423906, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv 6139001, Israel
| | - Nadir Arber
- Departments of Nephrology, Tel Aviv Sourasky Medical Center, 6 Weizmann Street, Tel Aviv 6423906, Israel
- The Integrated Cancer Prevention Center, Tel Aviv Sourasky Medical Center, 6 Weizmann Street, Tel Aviv 6423906, Israel
| | - Idit F Schwartz
- Departments of Nephrology, Tel Aviv Sourasky Medical Center, 6 Weizmann Street, Tel Aviv 6423906, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv 6139001, Israel
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Ijaz MU, Shahzadi S, Hamza A, Azmat R, Anwar H, Afsar T, Shafique H, Bhat MA, Naglah AM, Al-Omar MA, Razak S. Alleviative effects of pinostrobin against cadmium-induced renal toxicity in rats by reducing oxidative stress, apoptosis, inflammation, and mitochondrial dysfunction. Front Nutr 2023; 10:1175008. [PMID: 37342552 PMCID: PMC10278233 DOI: 10.3389/fnut.2023.1175008] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 04/26/2023] [Indexed: 06/23/2023] Open
Abstract
Introduction Cadmium (Cd) is a highly toxic heavy metal that can be found everywhere in the environment and can have harmful effects on both human and animal health. Pinostrobin (PSB) is a bioactive natural flavonoid isolated from Boesenbergia rotunda with several pharmacological properties, such as antiinflammatory, anticancer, antioxidant, and antiviral. This investigation was intended to assess the therapeutic potential of PSB against Cd-induced kidney damage in rats. Methods In total, 48 Sprague Dawley rats were divided into four groups: a control, a Cd (5 mg/kg), a Cd + PSB group (5 mg/kg Cd and 10 mg/kg PSB), and a PSB group (10 mg/kg) that received supplementation for 30 days. Results Exposure to Cd led to a decrease in the activities of catalase (CAT), glutathione reductase (GSR), superoxide dismutase (SOD), and glutathione peroxidase (GSH-PX), whereas levels of reactive oxygen species (ROS) and malondialdehyde (MDA) increased. Cd exposure also caused a substantial increase in urea, kidney injury molecule-1 (KIM-1), neutrophil gelatinase-associated lipocalin (NGAL), and creatinine levels. Moreover, a noticeable decline was noticed in creatinine clearance. Moreover, Cd exposure considerably increased the levels of inflammatory indices, including interleukin-1b (IL-1b), tumor necrosis factor-a (TNF-a), interleukin-6 (IL-6), nuclear factor kappa-B (NF-kB), inducible nitric oxide synthase (iNOS), and cyclooxygenase-2 (COX-2) activity. Cd treatment decreased the expression of the antiapoptotic markers (Bcl-2) while increasing the expression of apoptotic markers (Bax and Caspase-3). Furthermore, Cd treatment substantially reduced the TCA cycle enzyme activity, such as alpha-ketoglutarate dehydrogenase, succinate dehydrogenase, malate dehydrogenase, and isocitrate dehydrogenase. Moreover, mitochondrial electron transport chain enzymes, succinatedehydrogenase, NADH dehydrogenase, cytochrome c-oxidase, and coenzyme Q-cytochrome reductase activities were also decreased following Cd exposure. PSB administration substantially reduced the mitochondrial membrane potential while inducing significant histological damage. However, PSB treatment significantly reduced Cd-mediated renal damage in rats. Conclusion Thus, the present investigation discovered that PSB has ameliorative potential against Cd-induced renal dysfunction in rats.
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Affiliation(s)
- Muhammad Umar Ijaz
- Department of Zoology, Wildlife and Fisheries, University of Agriculture, Faisalabad, Pakistan
| | - Sabahat Shahzadi
- Department of Zoology, Wildlife and Fisheries, University of Agriculture, Faisalabad, Pakistan
| | - Ali Hamza
- Department of Zoology, Wildlife and Fisheries, University of Agriculture, Faisalabad, Pakistan
| | - Rabia Azmat
- Department of Zoology, Wildlife and Fisheries, University of Agriculture, Faisalabad, Pakistan
| | - Haseeb Anwar
- Department of Physiology, Government College University, Faisalabad, Pakistan
| | - Tayyaba Afsar
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Huma Shafique
- Institute of Cellular Medicine, Newcastle University Medical School, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Mashooq Ahmad Bhat
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Ahmed M. Naglah
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mohamed A. Al-Omar
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Suhail Razak
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
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Peng Z, Wang H, Zheng J, Wang J, Xiang Y, Liu C, Ji M, Liu H, Pan L, Qin X, Qu X. Is the proximal tubule the focus of tubulointerstitial fibrosis? Heliyon 2023; 9:e13508. [PMID: 36846656 PMCID: PMC9950842 DOI: 10.1016/j.heliyon.2023.e13508] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/15/2023] [Accepted: 02/01/2023] [Indexed: 02/09/2023] Open
Abstract
Tubulointerstitial fibrosis (TIF), a common end result of almost all progressive chronic kidney diseases (CKD), is also the best predictor of kidney survival. Almost all cells in the kidney are involved in the progression of TIF. Myofibroblasts, the primary producers of extracellular matrix, have previously received a great deal of attention; however, a large body of emerging evidence reveals that proximal tubule (PT) plays a central role in TIF progression. In response to injury, renal tubular epithelial cells (TECs) transform into inflammatory and fibroblastic cells, producing various bioactive molecules that drive interstitial inflammation and fibrosis. Here we reviewed the increasing evidence for the key role of the PT in promoting TIF in tubulointerstitial and glomerular injury and discussed the therapeutic targets and carrier systems involving the PT that holds particular promise for treating patients with fibrotic nephropathy.
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Affiliation(s)
- Zhi Peng
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha 410008, Hunan, China
| | - Hui Wang
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha 410008, Hunan, China
| | - Jiaoyun Zheng
- Department of Pathology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Jie Wang
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha 410008, Hunan, China
| | - Yang Xiang
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha 410008, Hunan, China
| | - Chi Liu
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha 410008, Hunan, China
| | - Ming Ji
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha 410008, Hunan, China
| | - Huijun Liu
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha 410008, Hunan, China
| | - Lang Pan
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha 410008, Hunan, China
| | - Xiaoqun Qin
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha 410008, Hunan, China
| | - Xiangping Qu
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha 410008, Hunan, China,Corresponding author.
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Dong W, Zhang K, Gong Z, Luo T, Li J, Wang X, Zou H, Song R, Zhu J, Ma Y, Liu G, Liu Z. N-acetylcysteine delayed cadmium-induced chronic kidney injury by activating the sirtuin 1-P53 signaling pathway. Chem Biol Interact 2023; 369:110299. [PMID: 36493885 DOI: 10.1016/j.cbi.2022.110299] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/22/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022]
Abstract
With the development of modern industrial civilization, cadmium (Cd), a known nephrotoxic metal, has become a growing public safety issue due to its ability to induce various types of kidney disease. Maladaptive proximal tubule repair is a significant cause of Cd-induced chronic kidney disease (CKD), which is characterized by premature senescence and pro-fibrosis. Previously, we demonstrated that cadmium causes DNA damage and cycle arrest in renal tubular epithelial cells, which may be relevant to premature senescence regulated by sirtuin 1 (SIRT1). In this study, in vivo and in vitro studies were conducted to elucidate the role of SIRT1-mediated premature renal senescence in Cd-induced CKD. As oxidative stress is a significant cause of aging, we evaluated whether N-acetylcysteine (NAC) would inhibit Cd-induced premature aging and dysfunction in rat renal tubular epithelial cells. Cadmium induced premature renal senescence and fibrosis, and NAC inhibited premature renal senescence and fibrosis through the SIRT1-P53 pathway and delayed CKD progression. Overall, the results suggested that the SIRT1-P53 pathway mediates oxidative stress, premature renal senescence, and renal fibrosis during cadmium exposure, which may be a potential therapeutic target for Cd-induced CKD.
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Affiliation(s)
- Wenxuan Dong
- College of Veterinary Medicine, Yangzhou University, 12 East Wenhui Road, Yangzhou, 225009, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, 225009, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, PR China
| | - Kanglei Zhang
- College of Veterinary Medicine, Yangzhou University, 12 East Wenhui Road, Yangzhou, 225009, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, 225009, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, PR China
| | - Zhonggui Gong
- College of Veterinary Medicine, Yangzhou University, 12 East Wenhui Road, Yangzhou, 225009, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, 225009, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, PR China
| | - Tongwang Luo
- College of Animal Science and Technology & College of Veterinary Medicine of Zhejiang Agriculture and Forestry University, Hangzhou, 311300, PR China
| | - Jiahui Li
- College of Veterinary Medicine, Yangzhou University, 12 East Wenhui Road, Yangzhou, 225009, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, 225009, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, PR China
| | - Xueru Wang
- College of Veterinary Medicine, Yangzhou University, 12 East Wenhui Road, Yangzhou, 225009, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, 225009, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, PR China
| | - Hui Zou
- College of Veterinary Medicine, Yangzhou University, 12 East Wenhui Road, Yangzhou, 225009, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, 225009, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, PR China
| | - Ruilong Song
- College of Veterinary Medicine, Yangzhou University, 12 East Wenhui Road, Yangzhou, 225009, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, 225009, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, PR China
| | - Jiaqiao Zhu
- College of Veterinary Medicine, Yangzhou University, 12 East Wenhui Road, Yangzhou, 225009, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, 225009, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, PR China
| | - Yonggang Ma
- College of Veterinary Medicine, Yangzhou University, 12 East Wenhui Road, Yangzhou, 225009, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, 225009, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, PR China
| | - Gang Liu
- College of Veterinary Medicine, Yangzhou University, 12 East Wenhui Road, Yangzhou, 225009, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, PR China; Department of Pathology & Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Zongping Liu
- College of Veterinary Medicine, Yangzhou University, 12 East Wenhui Road, Yangzhou, 225009, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, 225009, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, PR China.
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CCL-2 and CXCL-8: Potential Prognostic Biomarkers of Acute Kidney Injury after a Bothrops atrox Snakebite. Mediators Inflamm 2022; 2022:8285084. [PMID: 36117588 PMCID: PMC9473908 DOI: 10.1155/2022/8285084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 08/10/2022] [Accepted: 08/23/2022] [Indexed: 11/17/2022] Open
Abstract
In the Brazilian Amazon, the snake Bothrops atrox is the primary cause of snakebites. B. atrox (BaV) venom can cause systemic pathophysiological changes such as acute kidney injury (AKI), which leads to the production of chemokines and cytokines in response to the envenomation. These soluble immunological molecules act by modulating the inflammatory response; however, the mechanisms associated with the development of AKI are still poorly understood. Here, we characterize the profile of these soluble immunological molecules as possible predictive biomarkers of the development of AKI. The study involved 34 patients who had been victims of snakebites by Bothrops sp. These were categorized into two groups according to the development of AKI (AKI(-)/AKI(+)), using healthy donors as the control (HD). Peripheral blood samples were collected at three-time points: before antivenom administration (T0) and at 24 and 48 hours after antivenom (T1 and T2, respectively). The soluble immunological molecules (CXCL-8, CCL-5, CXCL-9, CCL-2, CXCL-10, IL-6, TNF, IL-2, IL-10, IFN-γ, IL-4, and IL-17A) were quantified using cytometric bead array. Our results demonstrated an increase in CXCL-9, CXCL-10, IL-6, IL-2, IL-10, and IL-17A molecules in the groups of patients who suffered Bothrops snakebites (AKI(-) and AKI(+)) before antivenom administration, when compared to HD. In the AKI(+) group, levels of CXCL-8 and CCL-2 molecules were elevated on admission and progressively decreased during the clinical evolution of patients after antivenom administration. In addition, in the signature analysis, these were produced exclusively by the group AKI(+) at T0. Thus, these chemokines may be related to the initiation and extension of AKI after envenomation by Bothrops and present themselves as two potential biomarkers of AKI at T0.
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Porter AW, Nguyen DN, Clayton DR, Ruiz WG, Mutchler SM, Ray EC, Marciszyn AL, Nkashama LJ, Subramanya AR, Gingras S, Kleyman TR, Apodaca G, Hendershot LM, Brodsky JL, Buck TM. The molecular chaperone GRP170 protects against ER stress and acute kidney injury in mice. JCI Insight 2022; 7:e151869. [PMID: 35104250 PMCID: PMC8983141 DOI: 10.1172/jci.insight.151869] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 01/28/2022] [Indexed: 01/26/2023] Open
Abstract
Molecular chaperones are responsible for maintaining cellular homeostasis, and one such chaperone, GRP170, is an endoplasmic reticulum (ER) resident that oversees both protein biogenesis and quality control. We previously discovered that GRP170 regulates the degradation and assembly of the epithelial sodium channel (ENaC), which reabsorbs sodium in the distal nephron and thereby regulates salt-water homeostasis and blood pressure. To define the role of GRP170 - and, more generally, molecular chaperones in kidney physiology - we developed an inducible, nephron-specific GRP170-KO mouse. Here, we show that GRP170 deficiency causes a dramatic phenotype: profound hypovolemia, hyperaldosteronemia, and dysregulation of ion homeostasis, all of which are associated with the loss of ENaC. Additionally, the GRP170-KO mouse exhibits hallmarks of acute kidney injury (AKI). We further demonstrate that the unfolded protein response (UPR) is activated in the GRP170-deficient mouse. Notably, the UPR is also activated in AKI when originating from various other etiologies, including ischemia, sepsis, glomerulonephritis, nephrotic syndrome, and transplant rejection. Our work establishes the central role of GRP170 in kidney homeostasis and directly links molecular chaperone function to kidney injury.
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Affiliation(s)
- Aidan W. Porter
- Department of Biological Sciences
- Department of Pediatrics, Nephrology Division
| | | | | | - Wily G. Ruiz
- Department of Medicine, Renal-Electrolyte Division
| | | | - Evan C. Ray
- Department of Medicine, Renal-Electrolyte Division
| | | | | | | | | | - Thomas R. Kleyman
- Department of Medicine, Renal-Electrolyte Division
- Department of Cell Biology, and
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | | | - Linda M. Hendershot
- Department of Tumor Cell Biology, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
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9
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Shi M, Maique J, Shepard S, Li P, Seli O, Moe OW, Chang Hu M. In vivo evidence for therapeutic applications of beclin 1 to promote recovery and inhibit fibrosis after acute kidney injury. Kidney Int 2022; 101:63-78. [PMID: 34736972 PMCID: PMC8741729 DOI: 10.1016/j.kint.2021.09.030] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 09/09/2021] [Accepted: 09/16/2021] [Indexed: 01/18/2023]
Abstract
Autophagy regulator beclin 1 activity determines the severity of kidney damage induced by ischemia reperfusion injury, but its role in kidney recovery and fibrosis are unknown and its therapeutic potentials have not been tested. Here, we explored beclin 1 effects on kidney fibrosis in three models of acute kidney injury (AKI)-ischemia reperfusion injury, cisplatin kidney toxicity, and unilateral ureteric obstruction in mouse strains with three levels of beclin 1 function: normal (wild type), low (heterozygous global deletion of beclin 1, Becn1+/-), and high beclin 1 activity (knockin gain-of-function mutant Becn1, Becn1FA). Fourteen days after AKI induction, heterozygous mice had more, but knockin mice had less kidney fibrosis than wild-type mice did. One day after ischemia reperfusion injury, heterozygous pan-kidney tubular Becn1 null mice had more severe kidney damage than homozygous distal tubular Becn1 null mice did, which was similar to the wild-type mice, implying that proximal tubular beclin 1 protects the kidney against ischemia reperfusion injury. By 14 days, both pan-kidney heterozygous Becn1 null and distal tubular homozygous Becn1 null mice had poorer kidney recovery than wild-type mice did. Injection of beclin 1 peptides increased cell proliferation in kidney tubules in normal mice. Beclin 1 peptides injection either before or after (2-5 days) ischemia reperfusion injury protected the kidney from injury and suppressed kidney fibrosis. Thus, both endogenous beclin 1 protein expression in kidney tubules and exogenous beclin 1 peptides are kidney protective via attenuation of acute kidney damage, promotion of cell proliferation, and inhibition of kidney fibrosis, consequently improving kidney recovery post-AKI. Hence, exogenous beclin 1 peptide may be a potential new therapy for AKI.
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Affiliation(s)
- Mingjun Shi
- Charles and Jane Pak Center for Mineral Metabolism and Clinical Research
| | - Jenny Maique
- Charles and Jane Pak Center for Mineral Metabolism and Clinical Research
| | - Sierra Shepard
- Charles and Jane Pak Center for Mineral Metabolism and Clinical Research
| | - Peng Li
- Charles and Jane Pak Center for Mineral Metabolism and Clinical Research
| | - Olivia Seli
- Charles and Jane Pak Center for Mineral Metabolism and Clinical Research
| | - Orson W. Moe
- Charles and Jane Pak Center for Mineral Metabolism and Clinical Research,Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA,Department of Physiology, University of Texas Southwestern Medical Center, Dallas, TX, USA,Address for reprint request and other correspondence: Ming Chang Hu, MD, PhD, Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, The University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390 USA, or Orson W. Moe, MD, Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, The University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390 USA,
| | - Ming Chang Hu
- Charles and Jane Pak Center for Mineral Metabolism and Clinical Research,Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA,Address for reprint request and other correspondence: Ming Chang Hu, MD, PhD, Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, The University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390 USA, or Orson W. Moe, MD, Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, The University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390 USA,
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10
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Yang H, Xing R, Liu S, Yu H, Li P. Role of Fucoxanthin towards Cadmium-induced renal impairment with the antioxidant and anti-lipid peroxide activities. Bioengineered 2021; 12:7235-7247. [PMID: 34569908 PMCID: PMC8806766 DOI: 10.1080/21655979.2021.1973875] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Kidney damages caused by cadmium are considered to be one of the most dangerous consequences for the human body. This study aimed to investigate the protective effects of fucoxanthin supplementation on mice models subjected to cadmium-induced kidney damage. The mice treated with cadmium chloride (CdCl2) were observed to have significantly reduced the cross-section area of glomeruli. Cadmium exposure has also caused the damage of the structural integrity of mitochondria and increased blood urea nitrogen (BUN), kidney injury molecule 1 (KIM1), and neutrophil gelatinase associated lipocalin (NGAL) levels. Peroxidase (POD), superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX) levels in cadmium-exposed mice were markedly declined. Caspase3, caspase8, and caspase9 gene expressions in association with apoptosis were dramatically elevated in renal tissues. The CdCl2 treated mice were orally administered with 50 mg/kg Shenfukang, 10 mg/kg, 25 mg/kg, and 50 mg/kg fucoxanthin for 14 days. The results revealed that high doses of fucoxanthin administration significantly decreased BUN, KIM1, NGAL levels, increasing POD, SOD, CAT, and ascorbate APX levels. Fucoxanthin administration also promoted recovery of the renal functions, micro-structural organization, and ultra-structural organization in the renal cells. In summary, the ameliorative effects of fucoxanthin supplementation against cadmium-induced kidney damage were mediated via inhibiting oxidative stress and apoptosis, promoting the recovery of structural integrity of mitochondria.
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Affiliation(s)
- Haoyue Yang
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
| | - Ronge Xing
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
| | - Song Liu
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
| | - Huahua Yu
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
| | - Pengcheng Li
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
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11
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Shrikanth CB, Jagannath S, Chilkunda ND. AMPK differentially alters sulphated glycosaminoglycans under normal and high glucose milieu in proximal tubular cells. J Biochem 2021; 169:75-86. [PMID: 32785657 DOI: 10.1093/jb/mvaa094] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 07/30/2020] [Indexed: 12/22/2022] Open
Abstract
Glycosaminoglycans (GAGs) and AMP-activated protein kinase (AMPK) are two critical molecular players involved in cellular homeostasis. Both of them are altered due to hyperglycaemia in the kidney, leading to the pathogenesis of diabetic nephropathy. Here, we have looked into the effect of AMPK modulation on sulphated GAG (sGAG) levels of tubular cells of proximal and distal origin to understand the mechanism of hyperglycaemia-mediated pathogenesis of the diabetic nephropathy. In MDCK cells (distal tubular cell) and NRK-52E (proximal tubular cell), AMPK inhibition resulted in increased sGAG levels under normal glucose conditions characteristically of heparan sulphate class, whereas AMPK activation did not have any effect. High glucose (HG) condition did not alter sGAG levels in MDCK cell despite a decrease in AMPK phosphorylation. Subjecting NRK-52E cells to HG milieu significantly decreased sGAG levels more so of chondroitin/dermatan sulphate, which is significantly prevented when HG is co-treated with AMPK activator. Interestingly, knockdown of AMPK by AMPKα1/α2 siRNA showed increased sGAG levels in NRK-52E. Our results suggest that changes in sGAG level, in particular, as a result of AMPK modulation is differentially regulated and is dependent on cell type as well as its physiological status. Furthermore, activation of AMPK is beneficial in preventing the HG-mediated decrease in sGAGs in proximal tubular cells.
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Affiliation(s)
- C B Shrikanth
- Department of Molecular Nutrition, CSIR-Central Food Technological Research Institute.,Academy of Scientific and Innovative Research (AcSIR), CSIR-CFTRI Campus, Mysuru 570 020, Karnataka, India
| | - Sanjana Jagannath
- Department of Molecular Nutrition, CSIR-Central Food Technological Research Institute.,Academy of Scientific and Innovative Research (AcSIR), CSIR-CFTRI Campus, Mysuru 570 020, Karnataka, India
| | - Nandini D Chilkunda
- Department of Molecular Nutrition, CSIR-Central Food Technological Research Institute.,Academy of Scientific and Innovative Research (AcSIR), CSIR-CFTRI Campus, Mysuru 570 020, Karnataka, India
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12
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Huang J, Kong Y, Xie C, Zhou L. Stem/progenitor cell in kidney: characteristics, homing, coordination, and maintenance. Stem Cell Res Ther 2021; 12:197. [PMID: 33743826 PMCID: PMC7981824 DOI: 10.1186/s13287-021-02266-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 03/02/2021] [Indexed: 02/06/2023] Open
Abstract
Renal failure has a high prevalence and is becoming a public health problem worldwide. However, the renal replacement therapies such as dialysis are not yet satisfactory for its multiple complications. While stem/progenitor cell-mediated tissue repair and regenerative medicine show there is light at the end of tunnel. Hence, a better understanding of the characteristics of stem/progenitor cells in kidney and their homing capacity would greatly promote the development of stem cell research and therapy in the kidney field and open a new route to explore new strategies of kidney protection. In this review, we generally summarize the main stem/progenitor cells derived from kidney in situ or originating from the circulation, especially bone marrow. We also elaborate on the kidney-specific microenvironment that allows stem/progenitor cell growth and chemotaxis, and comment on their interaction. Finally, we highlight potential strategies for improving the therapeutic effects of stem/progenitor cell-based therapy. Our review provides important clues to better understand and control the growth of stem cells in kidneys and develop new therapeutic strategies.
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Affiliation(s)
- Jiewu Huang
- State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Division of Nephrology, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Ave, Guangzhou, 510515, China
| | - Yaozhong Kong
- Department of Nephrology, the First People's Hospital of Foshan, Foshan, Guangdong, China
| | - Chao Xie
- Department of Nephrology, the First People's Hospital of Foshan, Foshan, Guangdong, China
| | - Lili Zhou
- State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Division of Nephrology, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Ave, Guangzhou, 510515, China. .,Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, China.
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13
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Grunenwald A, Roumenina LT, Frimat M. Heme Oxygenase 1: A Defensive Mediator in Kidney Diseases. Int J Mol Sci 2021; 22:2009. [PMID: 33670516 PMCID: PMC7923026 DOI: 10.3390/ijms22042009] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 02/04/2021] [Accepted: 02/08/2021] [Indexed: 12/18/2022] Open
Abstract
The incidence of kidney disease is rising, constituting a significant burden on the healthcare system and making identification of new therapeutic targets increasingly urgent. The heme oxygenase (HO) system performs an important function in the regulation of oxidative stress and inflammation and, via these mechanisms, is thought to play a role in the prevention of non-specific injuries following acute renal failure or resulting from chronic kidney disease. The expression of HO-1 is strongly inducible by a wide range of stimuli in the kidney, consequent to the kidney's filtration role which means HO-1 is exposed to a wide range of endogenous and exogenous molecules, and it has been shown to be protective in a variety of nephropathological animal models. Interestingly, the positive effect of HO-1 occurs in both hemolysis- and rhabdomyolysis-dominated diseases, where the kidney is extensively exposed to heme (a major HO-1 inducer), as well as in non-heme-dependent diseases such as hypertension, diabetic nephropathy or progression to end-stage renal disease. This highlights the complexity of HO-1's functions, which is also illustrated by the fact that, despite the abundance of preclinical data, no drug targeting HO-1 has so far been translated into clinical use. The objective of this review is to assess current knowledge relating HO-1's role in the kidney and its potential interest as a nephroprotection agent. The potential therapeutic openings will be presented, in particular through the identification of clinical trials targeting this enzyme or its products.
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Affiliation(s)
- Anne Grunenwald
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, F-75006 Paris, France; (A.G.); (L.T.R.)
| | - Lubka T. Roumenina
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, F-75006 Paris, France; (A.G.); (L.T.R.)
| | - Marie Frimat
- U1167-RID-AGE, Institut Pasteur de Lille, Inserm, Univ. Lille, F-59000 Lille, France
- Nephrology Department, CHU Lille, Univ. Lille, F-59000 Lille, France
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14
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Human kidney clonal proliferation disclose lineage-restricted precursor characteristics. Sci Rep 2020; 10:22097. [PMID: 33328501 PMCID: PMC7745030 DOI: 10.1038/s41598-020-78366-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 11/02/2020] [Indexed: 01/10/2023] Open
Abstract
In-vivo single cell clonal analysis in the adult mouse kidney has previously shown lineage-restricted clonal proliferation within varying nephron segments as a mechanism responsible for cell replacement and local regeneration. To analyze ex-vivo clonal growth, we now preformed limiting dilution to generate genuine clonal cultures from one single human renal epithelial cell, which can give rise to up to 3.4 * 106 cells, and analyzed their characteristics using transcriptomics. A comparison between clonal cultures revealed restriction to either proximal or distal kidney sub-lineages with distinct cellular and molecular characteristics; rapidly amplifying de-differentiated clones and a stably proliferating cuboidal epithelial-appearing clones, respectively. Furthermore, each showed distinct molecular features including cell-cycle, epithelial-mesenchymal transition, oxidative phosphorylation, BMP signaling pathway and cell surface markers. In addition, analysis of clonal versus bulk cultures show early clones to be more quiescent, with elevated expression of renal developmental genes and overall reduction in renal identity markers, but with an overlapping expression of nephron segment identifiers and multiple identity. Thus, ex-vivo clonal growth mimics the in-vivo situation displaying lineage-restricted precursor characteristics of mature renal cells. These data suggest that for reconstruction of varying renal lineages with human adult kidney based organoid technology and kidney regeneration ex-vivo, use of multiple heterogeneous precursors is warranted.
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15
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Lima NKS, Farias WRA, Cirilo MAS, Oliveira AG, Farias JS, Aires RS, Muzi-Filho H, Paixão ADO, Vieira LD. Renal ischemia-reperfusion leads to hypertension and changes in proximal tubule Na + transport and renin-angiotensin-aldosterone system: Role of NADPH oxidase. Life Sci 2020; 266:118879. [PMID: 33310030 DOI: 10.1016/j.lfs.2020.118879] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 11/13/2020] [Accepted: 12/01/2020] [Indexed: 12/28/2022]
Abstract
Acute renal injury (AKI) is a risk factor for the development of hypertension, which involves oxidative stress, changes in Na+ handling, and the intrarenal renin-angiotensin-aldosterone system (RAAS) as underlying mechanisms. We investigated in rats whether renal ischemia-reperfusion (IR) leads to changes in the proximal tubule ATP-dependent Na+ transport and the intrarenal content of RAAS components, as well as the role of NADPH oxidase. Rats weighing 300-350 g were submitted to AKI by bilateral IR (n = 25). After IR injury, the animals were followed up for 4 weeks. One part (n = 7) received daily treatment with the NADPH oxidase inhibitor apocynin (100 mg/kg, drinking water), while another part (n = 9) received apocynin 24 h before and after IR. One group was submitted to sham surgery (n = 8). Four weeks after IR, the rats presented elevated systolic blood pressure, as well as increased lipid peroxidation, NADPH oxidase activity, (Na++K+)ATPase activity, and upregulation of type 1 angiotensin II receptor in the renal cortex. On the other hand, there was a decrease in Na+-ATPase activity and downregulation of the isoforms 1 and 2 of the angiotensin-converting enzyme, type 2 angiotensin II receptor, and of the α and ε isoforms of protein kinase C. Most of these alterations was prevented by both apocynin treatment protocols. Thus, we conclude that AKI-induced by IR may induce changes in proximal tubule ATPases and RAAS components compatible with renal Na+ retention and hypertension. These data also indicate that the NADPH oxidase represents a key factor in the origin of these alterations.
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Affiliation(s)
- Natália K S Lima
- Department of Physiology and Pharmacology, Federal University of Pernambuco, Recife, Brazil
| | - Wilka R A Farias
- Department of Physiology and Pharmacology, Federal University of Pernambuco, Recife, Brazil
| | - Marry A S Cirilo
- Department of Physiology and Pharmacology, Federal University of Pernambuco, Recife, Brazil
| | - Angélica G Oliveira
- Department of Physiology and Pharmacology, Federal University of Pernambuco, Recife, Brazil
| | - Juliane S Farias
- Department of Physiology and Pharmacology, Federal University of Pernambuco, Recife, Brazil
| | - Regina S Aires
- Department of Physiology and Pharmacology, Federal University of Pernambuco, Recife, Brazil
| | - Humberto Muzi-Filho
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; National Center for Structural Biology and Bioimaging/CENABIO, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ana D O Paixão
- Department of Physiology and Pharmacology, Federal University of Pernambuco, Recife, Brazil; National Center for Structural Biology and Bioimaging/CENABIO, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Leucio D Vieira
- Department of Physiology and Pharmacology, Federal University of Pernambuco, Recife, Brazil; National Center for Structural Biology and Bioimaging/CENABIO, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
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16
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Yamamoto S, Yamamoto M, Nakamura J, Mii A, Yamamoto S, Takahashi M, Kaneko K, Uchino E, Sato Y, Fukuma S, Imamura H, Matsuda M, Yanagita M. Spatiotemporal ATP Dynamics during AKI Predict Renal Prognosis. J Am Soc Nephrol 2020; 31:2855-2869. [PMID: 33046532 DOI: 10.1681/asn.2020050580] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 08/10/2020] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Depletion of ATP in renal tubular cells plays the central role in the pathogenesis of kidney diseases. Nevertheless, inability to visualize spatiotemporal in vivo ATP distribution and dynamics has hindered further analysis. METHODS A novel mouse line systemically expressing an ATP biosensor (an ATP synthase subunit and two fluorophores) revealed spatiotemporal ATP dynamics at single-cell resolution during warm and cold ischemic reperfusion (IR) with two-photon microscopy. This experimental system enabled quantification of fibrosis 2 weeks after IR and assessment of the relationship between the ATP recovery in acute phase and fibrosis in chronic phase. RESULTS Upon ischemia induction, the ATP levels of proximal tubule (PT) cells decreased to the nadir within a few minutes, whereas those of distal tubule (DT) cells decreased gradually up to 1 hour. Upon reperfusion, the recovery rate of ATP in PTs was slower with longer ischemia. In stark contrast, ATP in DTs was quickly rebounded irrespective of ischemia duration. Morphologic changes of mitochondria in the acute phase support the observation of different ATP dynamics in the two segments. Furthermore, slow and incomplete ATP recovery of PTs in the acute phase inversely correlated with fibrosis in the chronic phase. Ischemia under conditions of hypothermia resulted in more rapid and complete ATP recovery with less fibrosis, providing a proof of concept for use of hypothermia to protect kidney tissues. CONCLUSIONS Visualizing spatiotemporal ATP dynamics during IR injury revealed higher sensitivity of PT cells to ischemia compared with DT cells in terms of energy metabolism. The ATP dynamics of PTs in AKI might provide prognostic information.
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Affiliation(s)
- Shinya Yamamoto
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masamichi Yamamoto
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Advanced Scientific Research Leaders Development Unit, Gunma University Graduate School of Medicine, Maebashi, Japan.,Precursory Research for Embryonic Science and Technology, Japan Science and Technology Agency, Saitama, Japan
| | - Jin Nakamura
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Akiko Mii
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shigenori Yamamoto
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masahiro Takahashi
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Keiichi Kaneko
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Eiichiro Uchino
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yuki Sato
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Medical Innovation Center TMK Project, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shingo Fukuma
- Department of Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiromi Imamura
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Michiyuki Matsuda
- Department of Pathology and Biology of Diseases, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Motoko Yanagita
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Japan .,Institute for the Advanced Study of Human Biology, Kyoto University, Kyoto, Japan
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17
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Tsuji K, Kitamura S, Wada J. Immunomodulatory and Regenerative Effects of Mesenchymal Stem Cell-Derived Extracellular Vesicles in Renal Diseases. Int J Mol Sci 2020; 21:ijms21030756. [PMID: 31979395 PMCID: PMC7037711 DOI: 10.3390/ijms21030756] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 01/21/2020] [Accepted: 01/21/2020] [Indexed: 12/13/2022] Open
Abstract
Mesenchymal stem cells (MSCs) have immunomodulatory and regenerative effects in many organs, including the kidney. Emerging evidence has shown that the trophic effects from MSCs are mainly mediated by the paracrine mechanism rather than the direct differentiation of MSCs into injured tissues. These secretomes from MSCs include cytokines, growth factors, chemokines and extracellular vesicles (EVs) containing microRNAs, mRNAs, and proteins. Many research studies have revealed that secretomes from MSCs have potential to ameliorate renal injury in renal disease models, including acute kidney injury and chronic kidney disease through a variety of mechanisms. These trophic mechanisms include immunomodulatory and regenerative effects. In addition, accumulating evidence has uncovered the specific factors and therapeutic mechanisms in MSC-derived EVs. In this article, we summarize the recent advances of immunomodulatory and regenerative effects of EVs from MSCs, especially focusing on the microRNAs.
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Affiliation(s)
| | - Shinji Kitamura
- Correspondence: ; Tel.: +81-86-235-7235; Fax: +81-86-222-5214
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18
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Garcia J, Costa VM, Bovolini A, Duarte JA, Rodrigues DF, de Lourdes Bastos M, Carvalho F. An effective antidotal combination of polymyxin B and methylprednisolone for α-amanitin intoxication. Arch Toxicol 2019; 93:1449-1463. [PMID: 30891624 DOI: 10.1007/s00204-019-02426-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 03/04/2019] [Indexed: 10/27/2022]
Abstract
Amanita phalloides is one of the most toxic mushrooms worldwide, and it is involved in the majority of human fatal cases of mushroom poisoning. α-Amanitin, the most deleterious toxin of A. phalloides to humans, inhibits RNA polymerase II (RNAPII), causing hepatic and renal failure. Previously, we have shown that polymyxin B (polB) reverts α-amanitin inhibition of RNAPII, although it was not able to guarantee the full survival of α-amanitin-intoxicated mice or prevent α-amanitin pro-inflammatory effects. α-Amanitin is also a substrate of the organic-anion-transporting polypeptide 1B3 (OATP1B3) and Na(+)-taurocholate cotransporter polypeptide (NTCP) transporters. Therefore, in the present work, we used a combination of polB [(2.5 mg/kg intraperitoneal (i.p.)] with the anti-inflammatory and NTCP inhibitor drug, methylprednisolone (MP) (10 mg/kg i.p.), as an attempt to fully revert α-amanitin-induced toxicity (0.33 mg/kg i.p.) in CD-1 mice. Results showed that the administration of the polB + MP combination, 4 h after α-amanitin, led to the full survival of the intoxicated animals, with a significant attenuation of α-amanitin-induced renal and hepatic necrosis. Also, the combination polB + MP led to a decrease of aminotransferase plasma levels, of the renal myeloperoxidase activity and of renal inflammatory cell infiltrate promoted by α-amanitin, although not preventing any of the hepatic pro-inflammatory effect of the toxin. The obtained results indicate that this combination may represent an important and valuable therapeutic approach to be used against α-amanitin intoxication.
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Affiliation(s)
- Juliana Garcia
- Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, UCIBIO, REQUIMTE, University of Porto, Rua José Viterbo Ferreira no 228, 4050-313, Porto, Portugal.
| | - Vera Marisa Costa
- Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, UCIBIO, REQUIMTE, University of Porto, Rua José Viterbo Ferreira no 228, 4050-313, Porto, Portugal
| | | | | | - Daniela Ferreira Rodrigues
- Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, UCIBIO, REQUIMTE, University of Porto, Rua José Viterbo Ferreira no 228, 4050-313, Porto, Portugal
| | - Maria de Lourdes Bastos
- Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, UCIBIO, REQUIMTE, University of Porto, Rua José Viterbo Ferreira no 228, 4050-313, Porto, Portugal
| | - Félix Carvalho
- Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, UCIBIO, REQUIMTE, University of Porto, Rua José Viterbo Ferreira no 228, 4050-313, Porto, Portugal.
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19
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Ogundipe DJ, Akomolafe RO, Sanusi AA, Imafidon CE, Olukiran OS, Oladele AA. Effects of two weeks administration of Ocimum gratissimum leaf on feeding pattern and markers of renal function in rats treated with gentamicin. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.ejbas.2016.07.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Dare J. Ogundipe
- Department of Physiological Sciences, Faculty of Basic Medical Sciences, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
| | - Rufus O. Akomolafe
- Department of Physiological Sciences, Faculty of Basic Medical Sciences, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
| | - Abubarkar A. Sanusi
- Department of Medicine, Faculty of Clinical Sciences, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
| | - Christian E. Imafidon
- Department of Physiological Sciences, Faculty of Basic Medical Sciences, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
| | - Olaoluwa S. Olukiran
- Department of Physiological Sciences, Faculty of Basic Medical Sciences, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
| | - Ayowole A. Oladele
- Department of Medical Laboratory Sciences, College of Medicine, Afe Babalola University, Ado Ekiti, Ekiti State, Nigeria
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20
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Ichikawa D, Kamijo-Ikemori A, Sugaya T, Ohata K, Hisamichi M, Hoshino S, Kimura K, Shibagaki Y. Utility of urinary tubular markers for monitoring chronic tubulointerstitial injury after ischemia-reperfusion. Nephrology (Carlton) 2018; 23:308-316. [PMID: 28063188 DOI: 10.1111/nep.12998] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 01/03/2017] [Accepted: 01/04/2017] [Indexed: 12/29/2022]
Abstract
AIM The aim of this study was to elucidate whether urinary tubular markers during the chronic phase of acute kidney injury (AKI) are associated with chronic tubulointerstitial damage. METHODS Male human L-type fatty acid binding protein (L-FABP) chromosomal transgenic (Tg) mice underwent ischaemic reperfusion (I/R) injury via renal pedicle clamping for either 10 min or 20 min. Contralateral nephrectomy was performed at the time of tissue reperfusion. The kidneys were analyzed 20 days after the last I/R. RESULTS Serum creatinine levels 20 days post-I/R were significantly higher in the 20 min I/R than in the 10 min I/R and control groups and were similar between the 10 min I/R and control groups. The degree of tubulointerstitial damage 20 days post-I/R was significantly more severe in the 20 min I/R than in the 10 min I/R and control groups, as well as in the 10 min I/R than in the control group. Urinary levels of human L-FABP, albumin, and kidney injury molecule-1 (KIM-1) 20 days post-I/R were significantly higher in the 20 min I/R than in the control group, whereas urinary L-FABP was significantly higher in the 10 min I/R than in the control group. Conversely, urinary neutrophil gelatinase-associated lipocalin levels did not significantly differ between the three groups. Finally, the urinary levels of human L-FABP, albumin, and KIM-1 levels 20 days post-I/R were significantly correlated with the degree of renal damage. CONCLUSIONS Urinary levels of human L-FABP, albumin and, KIM-1 may be useful for monitoring AKI-to-CKD transition in clinical practice.
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Affiliation(s)
- Daisuke Ichikawa
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Atsuko Kamijo-Ikemori
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan.,Department of Anatomy, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Takeshi Sugaya
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Keiichi Ohata
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Mikako Hisamichi
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Seiko Hoshino
- Department of Anatomy, St. Marianna University School of Medicine, Kanagawa, Japan
| | | | - Yugo Shibagaki
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan
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21
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Dehydrocostus lactone induces prominent apoptosis in kidney distal tubular epithelial cells and interstitial fibroblasts along with cell cycle arrest in ovarian epithelial cells. Biomed Pharmacother 2018; 99:956-969. [DOI: 10.1016/j.biopha.2018.01.099] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 01/18/2018] [Accepted: 01/24/2018] [Indexed: 11/24/2022] Open
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22
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Chen P, Pan Y, Cui Y, Wen Z, Liu P, He H, Li Q, Peng X, Zhao T, Yu S. Insulin-like growth factor I enhances the developmental competence of yak embryos by modulating aquaporin 3. Reprod Domest Anim 2017; 52:825-835. [DOI: 10.1111/rda.12985] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Accepted: 03/19/2017] [Indexed: 12/27/2022]
Affiliation(s)
- P Chen
- Gansu Province Livestock Embryo Engineering Research Center; College of Veterinary Medicine; Gansu Agricultural University; Lanzhou China
| | - Y Pan
- Gansu Province Livestock Embryo Engineering Research Center; College of Veterinary Medicine; Gansu Agricultural University; Lanzhou China
| | - Y Cui
- Gansu Province Livestock Embryo Engineering Research Center; College of Veterinary Medicine; Gansu Agricultural University; Lanzhou China
| | - Z Wen
- Gansu Province Livestock Embryo Engineering Research Center; College of Veterinary Medicine; Gansu Agricultural University; Lanzhou China
| | - P Liu
- Gansu Province Livestock Embryo Engineering Research Center; College of Veterinary Medicine; Gansu Agricultural University; Lanzhou China
| | - H He
- Gansu Province Livestock Embryo Engineering Research Center; College of Veterinary Medicine; Gansu Agricultural University; Lanzhou China
| | - Q Li
- Gansu Province Livestock Embryo Engineering Research Center; College of Veterinary Medicine; Gansu Agricultural University; Lanzhou China
| | - X Peng
- Gansu Province Livestock Embryo Engineering Research Center; College of Veterinary Medicine; Gansu Agricultural University; Lanzhou China
| | - T Zhao
- Gansu Province Livestock Embryo Engineering Research Center; College of Veterinary Medicine; Gansu Agricultural University; Lanzhou China
| | - S Yu
- Gansu Province Livestock Embryo Engineering Research Center; College of Veterinary Medicine; Gansu Agricultural University; Lanzhou China
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23
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Lee B, Kang HY, Lee DO, Ahn C, Jeung EB. Claudin-1, -2, -4, and -5: comparison of expression levels and distribution in equine tissues. J Vet Sci 2017; 17:445-451. [PMID: 27030194 PMCID: PMC5204021 DOI: 10.4142/jvs.2016.17.4.445] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 02/27/2016] [Accepted: 03/04/2016] [Indexed: 11/24/2022] Open
Abstract
Claudins, which are known as transmembrane proteins play an essential role in tight junctions (TJs) to form physical barriers and regulate paracellular transportation. To understand equine diseases, it is helpful to measure the tissue-specific expression of TJs in horses. Major equine diseases such as colic and West Nile cause damage to TJs. In this study, the expression level and distribution of claudin-1, -2, -4, and -5 in eight tissues were assessed by Western blotting and immunohistochemistry methods. Claudin-1 was primarily identified in the lung, duodenum, and uterus, claudin-2 was evenly observed in equine tissues, claudin-4 was abundantly detected in the liver, kidney and uterus, and claudin-5 was strongly expressed in the lung, duodenum, ovary, and uterus, as determined by Western blotting method. The localization of equine claudins was observed by immunohistochemistry methods. These findings provide knowledge regarding the expression patterns and localization of equine claudins, as well as valuable information to understand tight junction-related diseases according to tissue specificity and function of claudins in horses.
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Affiliation(s)
- Bonn Lee
- Laboratory of Veterinary Biochemistry and Molecular Biology, College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Korea
| | - Hee Young Kang
- Laboratory of Veterinary Biochemistry and Molecular Biology, College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Korea
| | - Dong Oh Lee
- Laboratory of Veterinary Biochemistry and Molecular Biology, College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Korea
| | - Changhwan Ahn
- Laboratory of Veterinary Biochemistry and Molecular Biology, College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Korea
| | - Eui-Bae Jeung
- Laboratory of Veterinary Biochemistry and Molecular Biology, College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Korea
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24
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Ogundipe DJ, Akomolafe RO, Sanusi AA, Imafidon CE, Olukiran OS, Oladele AA. Ocimum gratissimum Ameliorates Gentamicin-Induced Kidney Injury but Decreases Creatinine Clearance Following Sub-Chronic Administration in Rats. J Evid Based Complementary Altern Med 2017; 22:592-602. [PMID: 29228801 PMCID: PMC5871266 DOI: 10.1177/2156587217691891] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The effects of aqueous extract of Ocimum gratissimum leaf (AOGL) on the renal function of rats with gentamicin-induced nephrotoxicity were investigated. This study involved the use of forty five (45) adult male Wistar rats (housed in separate metabolic cages) such that graded doses of OAGL were administered to the experimental groups (p.o.) for 28 days after exposure to gentamicin toxicity (100 mg/kg i.p.) for 1 week. At the end of the study, comparisons of some indices of renal function as well as antioxidant status (GSH and TBARS) were made between the control, toxic and AOGL-treated groups at P < 0.05. The result showed that gentamicin treatment caused significant increase (P < .05) in urine output, urea, creatinine, total protein, relative kidney weight, and TBARS, as well as significant decrease (P < .05) in urine creatinine and GSH levels. Post-treatment with graded doses of AOGL caused significant increase in food consumption, GSH, urine, and plasma creatinine, as well as significant decrease (P < .05) in relative kidney weight, TBARS, and urine total protein. There was an appreciable difference in the kidney histology of the AOGL-treated groups when compared with the toxic control. Hence, the extract has therapeutic potential in the management of gentamicin-induced kidney injury, although a risk profile of renal dysfunction is not unlikely from 28 days of administration as evident by the decrease in creatinine clearance.
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25
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Equine Tight Junctions: Tissue-Specific Localization and Expression of Junction Adhesion Molecule-A, Zona Occludens-1, and Occludin. J Equine Vet Sci 2016. [DOI: 10.1016/j.jevs.2016.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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26
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Eymael J, Smeets B. Origin and fate of the regenerating cells of the kidney. Eur J Pharmacol 2016; 790:62-73. [DOI: 10.1016/j.ejphar.2016.07.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 07/08/2016] [Accepted: 07/19/2016] [Indexed: 12/25/2022]
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27
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Chevalier RL. The proximal tubule is the primary target of injury and progression of kidney disease: role of the glomerulotubular junction. Am J Physiol Renal Physiol 2016; 311:F145-61. [PMID: 27194714 PMCID: PMC4967168 DOI: 10.1152/ajprenal.00164.2016] [Citation(s) in RCA: 255] [Impact Index Per Article: 31.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 05/03/2016] [Indexed: 12/16/2022] Open
Abstract
There is an alarming global increase in the incidence of end-stage kidney disease, for which early biomarkers and effective treatment options are lacking. Largely based on the histology of the end-stage kidney and on the model of unilateral ureteral obstruction, current investigation is focused on the pathogenesis of renal interstitial fibrosis as a central mechanism in the progression of chronic kidney disease (CKD). It is now recognized that cumulative episodes of acute kidney injury (AKI) can lead to CKD, and, conversely, CKD is a risk factor for AKI. Based on recent and historic studies, this review shifts attention from the glomerulus and interstitium to the proximal tubule as the primary sensor and effector in the progression of CKD as well as AKI. Packed with mitochondria and dependent on oxidative phosphorylation, the proximal tubule is particularly vulnerable to injury (obstructive, ischemic, hypoxic, oxidative, metabolic), resulting in cell death and ultimately in the formation of atubular glomeruli. Animal models of human glomerular and tubular disorders have provided evidence for a broad repertoire of morphological and functional responses of the proximal tubule, revealing processes of degeneration and repair that may lead to new therapeutic strategies. Most promising are studies that encompass the entire life cycle from fetus to senescence, recognizing epigenetic factors. The application of techniques in molecular characterization of tubule segments and the development of human kidney organoids may provide new insights into the mammalian kidney subjected to stress or injury, leading to biomarkers of early CKD and new therapies.
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Affiliation(s)
- Robert L Chevalier
- Department of Pediatrics, University of Virginia, Charlottesville, Virginia
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28
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ROS-Mediated NLRP3 Inflammasome Activation in Brain, Heart, Kidney, and Testis Ischemia/Reperfusion Injury. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:2183026. [PMID: 27127546 PMCID: PMC4835650 DOI: 10.1155/2016/2183026] [Citation(s) in RCA: 354] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 03/03/2016] [Accepted: 03/10/2016] [Indexed: 12/27/2022]
Abstract
Ischemia and reperfusion (I/R) causes a reduction in arterial blood supply to tissues, followed by the restoration of perfusion and consequent reoxygenation. The reestablishment of blood flow triggers further damage to the ischemic tissue through reactive oxygen species (ROS) accumulation, interference with cellular ion homeostasis, and inflammatory responses to cell death. In normal conditions, ROS mediate important beneficial responses. When their production is prolonged or elevated, harmful events are observed with peculiar cellular changes. In particular, during I/R, ROS stimulate tissue inflammation and induce NLRP3 inflammasome activation. The mechanisms underlying the activation of NLRP3 are several and not completely elucidated. It was recently shown that NLRP3 might sense directly the presence of ROS produced by normal or malfunctioning mitochondria or indirectly by other activators of NLRP3. Aim of the present review is to describe the current knowledge on the role of NLRP3 in some organs (brain, heart, kidney, and testis) after I/R injury, with particular regard to the role played by ROS in its activation. Furthermore, as no specific therapy for the prevention or treatment of the high mortality and morbidity associated with I/R is available, the state of the art of the development of novel therapeutic approaches is illustrated.
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El-Achkar TM, Dagher PC. Tubular cross talk in acute kidney injury: a story of sense and sensibility. Am J Physiol Renal Physiol 2015; 308:F1317-23. [PMID: 25877507 DOI: 10.1152/ajprenal.00030.2015] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 04/10/2015] [Indexed: 01/20/2023] Open
Abstract
The mammalian kidney is an organ composed of numerous functional units or nephrons. Beyond the filtering glomerulus of each nephron, various tubular segments with distinct populations of epithelial cells sequentially span the kidney from cortex to medulla. The highly organized folding of the tubules results in a spatial distribution that allows intimate contact between various tubular subsegments. This unique arrangement can promote a newly recognized type of horizontal epithelial-to-epithelial cross talk. In this review, we discuss the importance of this tubular cross talk in shaping the response of the kidney to acute injury in a sense and sensibility model. We propose that injury-resistant tubules such as S1 proximal segments and thick ascending limbs (TAL) can act as "sensors" and thus modulate the responsiveness or "sensibility" of the S2-S3 proximal segments to injury. We also discuss new findings that highlight the importance of tubular cross talk in regulating homeostasis and inflammation not only in the kidney, but also systemically.
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Affiliation(s)
- Tarek M El-Achkar
- Indiana University School of Medicine, Indianapolis, Indiana; and Roudebush Veterans Affairs Medical Center, Indianapolis, Indiana
| | - Pierre C Dagher
- Indiana University School of Medicine, Indianapolis, Indiana; and
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30
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Ju GQ, Cheng J, Zhong L, Wu S, Zou XY, Zhang GY, Gu D, Miao S, Zhu YJ, Sun J, Du T. Microvesicles derived from human umbilical cord mesenchymal stem cells facilitate tubular epithelial cell dedifferentiation and growth via hepatocyte growth factor induction. PLoS One 2015; 10:e0121534. [PMID: 25793303 PMCID: PMC4368636 DOI: 10.1371/journal.pone.0121534] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2014] [Accepted: 02/03/2015] [Indexed: 02/06/2023] Open
Abstract
During acute kidney injury (AKI), tubular cell dedifferentiation initiates cell regeneration; hepatocyte growth factor (HGF) is involved in modulating cell dedifferentiation. Mesenchymal stem cell (MSC)-derived microvesicles (MVs) deliver RNA into injured tubular cells and alter their gene expression, thus regenerating these cells. We boldly speculated that MVs might induce HGF synthesis via RNA transfer, thereby facilitating tubular cell dedifferentiation and regeneration. In a rat model of unilateral AKI, the administration of MVs promoted kidney recovery. One of the mechanisms of action is the acceleration of tubular cell dedifferentiation and growth. Both in vivo and in vitro, rat HGF expression in damaged rat tubular cells was greatly enhanced by MV treatment. In addition, human HGF mRNA present in MVs was delivered into rat tubular cells and translated into the HGF protein as another mechanism of HGF induction. RNase treatment abrogated all MV effects. In the in vitro experimental setting, the conditioned medium of MV-treated injured tubular cells, which contains a higher concentration of HGF, strongly stimulated cell dedifferentiation and growth, as well as Erk1/2 signaling activation. Intriguingly, these effects were completely abrogated by either c-Met inhibitor or MEK inhibitor, suggesting that HGF induction is a crucial contributor to the acceleration of cell dedifferentiation and growth. All these findings indicate that MV-induced HGF synthesis in damaged tubular cells via RNA transfer facilitates cell dedifferentiation and growth, which are important regenerative mechanisms.
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Affiliation(s)
- Guan-qun Ju
- Department of Urology, Shanghai Children’s Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jun Cheng
- Department of Urology, Nantong Tongzhou People’s Hospital, Nantong, China
| | - Liang Zhong
- Department of Urology, Shanghai Children’s Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Shuai Wu
- Department of Urology, Qingdao Municipal Hospital, Qingdao, China
| | - Xiang-yu Zou
- Department of Urology, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Guang-yuan Zhang
- Department of Urology, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Di Gu
- Department of Urology, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Shuai Miao
- Department of Urology, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ying-jian Zhu
- Department of Urology, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jie Sun
- Department of Urology, Shanghai Children’s Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- * E-mail: (JS); (TD)
| | - Tao Du
- Department of Urology, Henan Provincial People’s Hospital, Zhengzhou, China
- * E-mail: (JS); (TD)
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31
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Akahoshi N, Kamata S, Kubota M, Hishiki T, Nagahata Y, Matsuura T, Yamazaki C, Yoshida Y, Yamada H, Ishizaki Y, Suematsu M, Kasahara T, Ishii I. Neutral aminoaciduria in cystathionine β-synthase-deficient mice, an animal model of homocystinuria. Am J Physiol Renal Physiol 2014; 306:F1462-76. [DOI: 10.1152/ajprenal.00623.2013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The kidney is one of the major loci for the expression of cystathionine β-synthase (CBS) and cystathionine γ-lyase (CTH). While CBS-deficient ( Cbs−/−) mice display homocysteinemia/methioninemia and severe growth retardation, and rarely survive beyond the first 4 wk, CTH-deficient ( Cth−/−) mice show homocysteinemia/cystathioninemia but develop with no apparent abnormality. This study examined renal amino acid reabsorption in those mice. Although both 2-wk-old Cbs−/− and Cth−/− mice had normal renal architecture, their serum/urinary amino acid profiles largely differed from wild-type mice. The most striking feature was marked accumulation of Met and cystathionine in serum/urine/kidney samples of Cbs−/− and Cth−/− mice, respectively. Levels of some neutral amino acids (Val, Leu, Ile, and Tyr) that were not elevated in Cbs−/− serum were highly elevated in Cbs−/− urine, and urinary excretion of other neutral amino acids (except Met) was much higher than expected from their serum levels, demonstrating neutral aminoaciduria in Cbs−/− (not Cth−/−) mice. Because the bulk of neutral amino acids is absorbed via a B0AT1 transporter and Met has the highest substrate affinity for B0AT1 than other neutral amino acids, hypermethioninemia may cause hyperexcretion of neutral amino acids.
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Affiliation(s)
- Noriyuki Akahoshi
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Gunma, Japan
- Japan Science and Technology Agency (JST), Exploratory Research for Advanced Technology (ERATO), Suematsu Gas Biology Project, Tokyo, Japan
- Department of Immunology, Akita University Graduate School of Medicine, Akita, Japan; and
| | - Shotaro Kamata
- Department of Biochemistry, Keio University Graduate School of Pharmaceutical Sciences, Tokyo, Japan
| | - Masashi Kubota
- Department of Biochemistry, Keio University Graduate School of Pharmaceutical Sciences, Tokyo, Japan
| | - Takako Hishiki
- Japan Science and Technology Agency (JST), Exploratory Research for Advanced Technology (ERATO), Suematsu Gas Biology Project, Tokyo, Japan
| | - Yoshiko Nagahata
- Japan Science and Technology Agency (JST), Exploratory Research for Advanced Technology (ERATO), Suematsu Gas Biology Project, Tokyo, Japan
| | - Tomomi Matsuura
- Japan Science and Technology Agency (JST), Exploratory Research for Advanced Technology (ERATO), Suematsu Gas Biology Project, Tokyo, Japan
| | - Chiho Yamazaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Yuka Yoshida
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Hidenori Yamada
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Makoto Suematsu
- Japan Science and Technology Agency (JST), Exploratory Research for Advanced Technology (ERATO), Suematsu Gas Biology Project, Tokyo, Japan
| | - Tadashi Kasahara
- Department of Biochemistry, Keio University Graduate School of Pharmaceutical Sciences, Tokyo, Japan
| | - Isao Ishii
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Gunma, Japan
- Department of Biochemistry, Keio University Graduate School of Pharmaceutical Sciences, Tokyo, Japan
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Abstract
The mammalian kidney has an intrinsic ability to repair after significant injury. However, this process is inefficient: patients are at high risk for the loss of kidney function in later life. No therapy exists to treat established acute kidney injury (AKI) per se: strategies to promote endogenous repair processes and retard associated fibrosis are a high priority. Whole-organ gene expression profiling has been used to identify repair responses initiated with AKI, and factors that may promote the transition from AKI to chronic kidney disease. Transcriptional profiling has shown molecular markers and potential regulatory pathways of renal repair. Activation of a few key developmental pathways has been reported during repair. Whether these are comparable networks with similar target genes with those in earlier nephrogenesis remains unclear. Altered microRNA profiles, persistent tubular injury responses, and distinct late inflammatory responses highlight continuing kidney pathology. Additional insights into injury and repair processes will be gained by study of the repair transcriptome and cell-specific translatome using high-resolution technologies such as RNA sequencing and translational profiling tailored to specific cellular compartments within the kidney. An enhanced understanding holds promise for both the identification of novel therapeutic targets and biomarker-based evaluation of the damage-repair process.
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Affiliation(s)
- Sanjeev Kumar
- Department of Stem Cell Biology and Regenerative Medicine, Eli and Edythe Broad-California Institute of Regenerative Medicine (CIRM) Center for Regenerative Medicine and Stem Cell Research, The Keck School of Medicine of the University of Southern California, Los Angeles, CA
| | - Jing Liu
- Department of Stem Cell Biology and Regenerative Medicine, Eli and Edythe Broad-California Institute of Regenerative Medicine (CIRM) Center for Regenerative Medicine and Stem Cell Research, The Keck School of Medicine of the University of Southern California, Los Angeles, CA
| | - Andrew P McMahon
- Department of Stem Cell Biology and Regenerative Medicine, Eli and Edythe Broad-California Institute of Regenerative Medicine (CIRM) Center for Regenerative Medicine and Stem Cell Research, The Keck School of Medicine of the University of Southern California, Los Angeles, CA.
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Johansson ME. Tubular Regeneration: When Can the Kidney Regenerate from Injury and What Turns Failure into Success. ACTA ACUST UNITED AC 2014; 126:76. [DOI: 10.1159/000360671] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Barros MA, Martins JFP, Maria DA, Wenceslau CV, De Souza DM, Kerkis A, Câmara NOS, Balieiro JCC, Kerkis I. Immature Dental Pulp Stem Cells Showed Renotropic and Pericyte-Like Properties in Acute Renal Failure in Rats. CELL MEDICINE 2014; 7:95-108. [PMID: 26858898 DOI: 10.3727/215517914x680038] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Acute renal failure (ARF) is a common renal disease that can lead to high mortality. Recovery from ARF occurs with the replacement of necrotic tubular cells by functional tubular epithelial cells and the normalization of microvascular endothelial cell function in the peritubular capillaries. Conventional therapeutic techniques are often ineffective against ARF. Hence, stem cell therapies, which act through multiple trophic and regenerative mechanisms, are encouraging. We investigated the homing of human immature dental pulp stem cells (IDPSCs) after endovenous (EV) or intraperitoneal (IP) injection, in immunocompetent Wistar rats with ARF induced by intramuscular injection of glycerol, without the use of immunosuppression. The cells, which had been cryopreserved for 6 years, were CD105(+), CD73(+), CD44(+), and partly, STRO-1(+) and CD146(+), and presented unaltered mesoderm differentiation potential. The presence of these cells in the tubular region of the kidney and in the peritubular capillaries was demonstrated. These cells accelerate tubular epithelial cell regeneration through significant increase of Ki-67-immunoreactive cells in damaged kidney. Flow cytometry analysis confirmed that IDPSCs home to the kidneys (EV 34.10% and IP 33.25%); a lower percentage of cells was found in the liver (EV 19.05% and IP 9.10%), in the muscles (EV 6.30% and IP 1.35%), and in the lungs (EV 2.0% and IP 1.85%). After infusion into rat, these cells express pericyte markers, such as CD146(+), STRO-1(+), and vascular endothelial growth factor (VEGF(+)). We found that IDPSCs demonstrate renotropic and pericyte-like properties and contributed to restore renal tubule structure in an experimental rat ARF model.
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Affiliation(s)
- Michele A Barros
- Laboratory of Genetics, Butantan Institute, São Paulo, SP, Brazil; †School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, SP, Brazil
| | | | - Durvanei Augusto Maria
- § Laboratory of Biochemistry and Biophysics, Butantan Institute , São Paulo, SP , Brazil
| | | | | | - Alexandre Kerkis
- Laboratory of Genetics, Butantan Institute , São Paulo, SP , Brazil
| | - Niels Olsen S Câmara
- ¶ Department of Immunology, Institute of Biomedical Sciences, University of São Paulo , São Paulo , Brazil
| | - Julio Cesar C Balieiro
- # Department of Basic Science of Faculty of Animal Science and Food Engineering, University of São Paulo , São Paulo , Brazil
| | - Irina Kerkis
- Laboratory of Genetics, Butantan Institute , São Paulo, SP , Brazil
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Stem cells and kidney regeneration. J Formos Med Assoc 2014; 113:201-9. [PMID: 24434243 DOI: 10.1016/j.jfma.2013.12.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Revised: 11/13/2013] [Accepted: 12/09/2013] [Indexed: 12/24/2022] Open
Abstract
Kidney disease is an escalating burden all over the world. In addition to preventing kidney injury, regenerating damaged renal tissue is as important as to retard the progression of chronic kidney disease to end stage renal disease. Although the kidney is a delicate organ and has only limited regenerative capacity compared to the other organs, an increasing understanding of renal development and renal reprogramming has kindled the prospects of regenerative options for kidney disease. Here, we will review the advances in the kidney regeneration including the manipulation of renal tubular cells, fibroblasts, endothelial cells, and macrophages in renal disease. Several types of stem cells, such as bone marrow-derived cells, adipocyte-derived mesenchymal stem cells, embryonic stem cells, and induced pluripotent stem cells are also applied for renal regeneration. Endogenous or lineage reprogrammed renal progenitor cells represent an attractive possibility for differentiation into multiple renal cell types. Angiogenesis can ameliorate hypoxia and renal fibrosis. Based on these studies and knowledge, we hope to innovate more reliable pharmacological or biotechnical methods for kidney regeneration medicine.
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Inhibition of protein translation as a mechanism of acidotic pH protection against ischaemic injury through inhibition of CREB mediated tRNA synthetase expression. Exp Cell Res 2013; 319:3116-27. [DOI: 10.1016/j.yexcr.2013.07.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 06/22/2013] [Accepted: 07/18/2013] [Indexed: 12/11/2022]
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Hanschmann EM, Godoy JR, Berndt C, Hudemann C, Lillig CH. Thioredoxins, glutaredoxins, and peroxiredoxins--molecular mechanisms and health significance: from cofactors to antioxidants to redox signaling. Antioxid Redox Signal 2013; 19:1539-605. [PMID: 23397885 PMCID: PMC3797455 DOI: 10.1089/ars.2012.4599] [Citation(s) in RCA: 493] [Impact Index Per Article: 44.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Revised: 02/01/2013] [Accepted: 02/07/2013] [Indexed: 12/19/2022]
Abstract
Thioredoxins (Trxs), glutaredoxins (Grxs), and peroxiredoxins (Prxs) have been characterized as electron donors, guards of the intracellular redox state, and "antioxidants". Today, these redox catalysts are increasingly recognized for their specific role in redox signaling. The number of publications published on the functions of these proteins continues to increase exponentially. The field is experiencing an exciting transformation, from looking at a general redox homeostasis and the pathological oxidative stress model to realizing redox changes as a part of localized, rapid, specific, and reversible redox-regulated signaling events. This review summarizes the almost 50 years of research on these proteins, focusing primarily on data from vertebrates and mammals. The role of Trx fold proteins in redox signaling is discussed by looking at reaction mechanisms, reversible oxidative post-translational modifications of proteins, and characterized interaction partners. On the basis of this analysis, the specific regulatory functions are exemplified for the cellular processes of apoptosis, proliferation, and iron metabolism. The importance of Trxs, Grxs, and Prxs for human health is addressed in the second part of this review, that is, their potential impact and functions in different cell types, tissues, and various pathological conditions.
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Affiliation(s)
- Eva-Maria Hanschmann
- Institute for Medical Biochemistry and Molecular Biology, University Medicine, Ernst-Moritz Arndt University, Greifswald, Germany
| | - José Rodrigo Godoy
- Institute of Physiology, Pathophysiology and Biophysics, Department of Biomedical Sciences, University of Veterinary Medicine, Vienna, Austria
| | - Carsten Berndt
- Department of Neurology, Medical Faculty, Heinrich-Heine University, Duesseldorf, Germany
| | - Christoph Hudemann
- Institute of Laboratory Medicine, Molecular Diagnostics, Philipps University, Marburg, Germany
| | - Christopher Horst Lillig
- Institute for Medical Biochemistry and Molecular Biology, University Medicine, Ernst-Moritz Arndt University, Greifswald, Germany
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Cao Z, Yu W, Li W, Cheng F, Xia Y, Rao T, Yao X, Zhang X, Larré S. Acute kidney injuries induced by various irrigation pressures in rat models of mild and severe hydronephrosis. Urology 2013; 82:1453.e9-16. [PMID: 24144540 DOI: 10.1016/j.urology.2013.08.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 07/22/2013] [Accepted: 08/09/2013] [Indexed: 01/08/2023]
Abstract
OBJECTIVE To clarify whether tolerance to irrigation pressure could be modified over varying degrees of kidney obstruction during the endoscopic treatment of kidney stones in a rat model. METHODS A total of 126 rats were randomly allocated into 2 experimental groups and a control group. The experimental groups underwent a surgical procedure to induce mild (group M, n = 60) or severe (group S, n = 60) hydronephrosis. In each group, the rats were then randomly allocated into 4 subgroups (M0 to M3 and S0 to S3) of respectively 6, 18, 18, and 18 rats. Groups 0 to 3 were respectively perfused with 0 (no irrigation), 20, 60, and 100 mm Hg pressure fluid. The control group underwent no surgical procedures and was only perfused with 100 mm Hg pressure fluid. Acute kidney injuries were assessed by analyzing the kidney microstructure, tubular cell apoptosis, kidney injury molecule-1, and cysteine-rich 61 (Cyr61/CCN1) expression using immunohistochemistry. RESULTS No abnormalities were observed for the control group, groups 0, or 1. In group 2, abnormalities were observed only in the S group, whereas all kidneys in group 3 suffered acute kidneys injuries, along with occurrence of tubular cells necrosis, increased apoptosis, and increased expression of kidney injury molecule-1 and Cyr61. CONCLUSION Rats with severely obstructed kidneys were more likely to suffer acute kidney injuries than those with less obstructed kidneys when exposed to higher kidney irrigation pressures. This suggests that the pressure should be controlled and reduced when performing endourologic procedures in the context of kidney obstruction.
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Affiliation(s)
- Zhixiu Cao
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
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Cadmium, mercury, and lead in kidney cortex are not associated with urinary 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG) in living kidney donors. Int Arch Occup Environ Health 2013; 87:315-22. [PMID: 23536210 DOI: 10.1007/s00420-013-0863-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Accepted: 02/21/2013] [Indexed: 12/26/2022]
Abstract
PURPOSE Cadmium in urine is positively associated with urinary 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG) concentrations, a sensitive marker of oxidative DNA damage. We determined whether kidney concentrations of cadmium, mercury, and lead, which may generate oxidative DNA damage, were associated with urinary 8-oxodG or not. METHODS 8-OxodG was measured in separate 24 h and overnight urine samples from Swedish healthy adult kidney donors (N = 152) using LC-MS/MS. Concentrations of metals were measured in kidney biopsies (N = 109) by ICP-MS. RESULTS The median 8-oxodG concentrations (adjusted to specific gravity) in 24 h and overnight samples were 13.5 and 15.3 nmol/L; 8-oxodG excretion rates in 24 h and overnight samples were 0.93 and 0.86 nmol/h. In multivariable linear regression analyses, we did not find any association between 8-oxodG concentrations or rates and elements in the kidney. The 24-h 8-oxodG concentrations were positively associated with serum ferritin (β = 0.048, p < 0.0001), body weight (β = 0.13, p = 0.0019), and inversely with gender (β = -3.34, p = 0.0024). Similar associations with 8-oxodG excretion rates were stronger. Smoking was positively associated with 24-h 8-oxodG excretion rates (β = 0.26, p = 0.0090), but not with overnight samples. CONCLUSIONS Neither cadmium, nor mercury or lead in the kidney contributed to urinary 8-oxodG concentrations in non-occupationally exposed subjects. The iron status was positively associated with urinary 8-oxodG, particularly in women.
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Hato T, El-Achkar TM, Dagher PC. Sisters in arms: myeloid and tubular epithelial cells shape renal innate immunity. Am J Physiol Renal Physiol 2013; 304:F1243-51. [PMID: 23515715 DOI: 10.1152/ajprenal.00101.2013] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The importance of innate immunity for survival is underscored by its presence at almost every level of the evolutionary tree of life. The task of "danger" recognition by the innate immune system is carried out by a broad class of pattern recognition receptors. These receptors are expressed in both hematopoietic and nonhematopoietic cells such as renal epithelial cells. Upon activation, pattern recognition receptors induce essentially two types of defensive responses: inflammation and phagocytosis. In this review, we highlight evidence that renal epithelial cells are endowed with such defensive capabilities and as such fully participate in renal innate immune responses.
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Affiliation(s)
- Takashi Hato
- Department of Medicine, Indiana University, Indianapolis, IN, USA
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Parajuli N, MacMillan-Crow LA. Role of reduced manganese superoxide dismutase in ischemia-reperfusion injury: a possible trigger for autophagy and mitochondrial biogenesis? Am J Physiol Renal Physiol 2012. [PMID: 23195678 DOI: 10.1152/ajprenal.00435.2012] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Excessive generation of superoxide and mitochondrial dysfunction has been described as being important events during ischemia-reperfusion (I/R) injury. Our laboratory has demonstrated that manganese superoxide dismutase (MnSOD), a major mitochondrial antioxidant that eliminates superoxide, is inactivated during renal transplantation and renal I/R and precedes development of renal failure. We hypothesized that MnSOD knockdown in the kidney augments renal damage during renal I/R. Using newly characterized kidney-specific MnSOD knockout (KO) mice the extent of renal damage and oxidant production after I/R was evaluated. These KO mice (without I/R) exhibited low expression and activity of MnSOD in the distal nephrons, had altered renal morphology, increased oxidant production, but surprisingly showed no alteration in renal function. After I/R the MnSOD KO mice showed similar levels of injury to the distal nephrons when compared with wild-type mice. Moreover, renal function, MnSOD activity, and tubular cell death were not significantly altered between the two genotypes after I/R. Interestingly, MnSOD KO alone increased autophagosome formation, mitochondrial biogenesis, and DNA replication/repair within the distal nephrons. These findings suggest that the chronic oxidative stress as a result of MnSOD knockdown induced multiple coordinated cell survival signals including autophagy and mitochondrial biogenesis, which protected the kidney against the acute oxidative stress following I/R.
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Affiliation(s)
- Nirmala Parajuli
- Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA.
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Small DM, Gobe GC. Cytochrome c: potential as a noninvasive biomarker of drug-induced acute kidney injury. Expert Opin Drug Metab Toxicol 2012; 8:655-64. [PMID: 22475359 DOI: 10.1517/17425255.2012.679657] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Acute kidney injury (AKI) in critically ill patients is closely associated with increased morbidity and mortality, yet there remains continued reliance on increased serum creatinine and blood urea nitrogen to diagnose AKI. These biomarkers increase only after significant renal structural damage has occurred. Recent research efforts have focused on discovery and validation of novel serum and urine biomarkers to detect AKI prior to extensive structural damage. Cytochrome c is best known as an indicator of cell death burden in any organ or tissue. It is released during mitochondrial damage that is associated with processing of apoptosis, cell lysis during necrosis and even reversible mitochondrial and cell injury. AREAS COVERED This article reviews the current literature on the potential for cytochrome c as an early biomarker of AKI. The article is based on PubMed searches, using the terms 'acute kidney injury,' 'renal failure,' 'biomarker,' 'toxicity' and 'cytochrome c', with a focus on experimental and clinical data. EXPERT OPINION Cytochrome c, as a biomarker, has the potential to improve outcome for AKI patients. Its release indicates mitochondrial damage, one of the earliest changes in cell injury and death. New mitochondrial-targeted therapeutics may be designed around this molecule. Its disadvantages include only transient increase at expression levels that are easily measurable and nonspecificity for kidney injury. The appropriate and optimal utilization of cytochrome c as a biomarker for AKI will be realized only after its complete characterization in experimental and clinical arenas.
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Affiliation(s)
- David M Small
- The University of Queensland, Princess Alexandra Hospital, School of Medicine, Centre for Kidney Disease Research, Brisbane, 4102, Australia
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Gasanov F, Aytac B, Vuruskan H. The effects of tadalafil on renal ischemia reperfusion injury: an experimental study. Bosn J Basic Med Sci 2012; 11:158-62. [PMID: 21875417 DOI: 10.17305/bjbms.2011.2567] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Many pharmacological agents were investigated for the prevention of renal ischemic reperfusion (I/R) injury as well as the phosphodiesterase (PDE) inhibitors. The aim of the study was to examine the possible renoprotective effect of a member in this family, tadalafil (Td) on I/R injury. Thirty-six Spraque Dawley rats were allocated to six groups as; control, sham, ischemia (I), ischemia/reperfusion (I/R), Td pretreatment ischemia (Td/I) and Td pretreatment ischemia/reperfusion (Td/IR) groups. Right nephrectomy was performed in all groups. Td was dissolved in saline solution and given as a single dose (1mg/kg) through an orogastrictube 60 min before the operation in the Td pretreatment groups. In ischemia group the left renal pedicle was occluded for 45 minutes and after than underwent left nephrectomy. In I/R group left renal pedicle was occluded for 45 minutes, reperfused for 1hour and after then underwent nephrectomy. The left kidneys were evaluated after standard laboratory procedures with regard to tubular morphology, and leukocyte infiltration. The data were analyzed by using Kruskal-Wallis test to determine differences among the groups. A p value of < 0.05 was considered significant. Renal tubular damage was significant increased in the ischemia and I/R group (Groups III and IV) when compared to those in the sham group (Group II), (p = 0.004, 0.004, respectively). Tubular damage, in the Td pretreatment ischemia (Td/I) (Group V) and Td pretreatment ischemia/reperfusion (Td/IR) (Group VI) were less than that in the ischemia group (Group III) (p= 0.010, p= 0.025, respectively). Td administration prior to the renal I/R injury attenuated these morphological disarrangements, which were observed in renal I/R. Tubular necrosis, which may be considered as an important issue of the developing renal injury, was also completely prevented with Td administration.
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Affiliation(s)
- Feyzul Gasanov
- Department of Urology, Uludag University, Gorukle, Bursa, Turkey
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Bonventre JV, Yang L. Cellular pathophysiology of ischemic acute kidney injury. J Clin Invest 2011; 121:4210-21. [PMID: 22045571 DOI: 10.1172/jci45161] [Citation(s) in RCA: 1355] [Impact Index Per Article: 104.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Ischemic kidney injury often occurs in the context of multiple organ failure and sepsis. Here, we review the major components of this dynamic process, which involves hemodynamic alterations, inflammation, and endothelial and epithelial cell injury, followed by repair that can be adaptive and restore epithelial integrity or maladaptive, leading to chronic kidney disease. Better understanding of the cellular pathophysiological processes underlying kidney injury and repair will hopefully result in the design of more targeted therapies to prevent the injury, hasten repair, and minimize chronic progressive kidney disease.
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Affiliation(s)
- Joseph V Bonventre
- Renal Division, Brigham and Women’s Hospital, Boston, Massachusetts, USA.
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Vickers AE, Fisher R, Olinga P, Dial S. Repair pathways evident in human liver organ slices. Toxicol In Vitro 2011; 25:1485-92. [DOI: 10.1016/j.tiv.2011.04.029] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2010] [Revised: 04/08/2011] [Accepted: 04/29/2011] [Indexed: 11/30/2022]
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Liu H, McTaggart SJ, Johnson DW, Gobe GC. Original article anti-oxidant pathways are stimulated by mesenchymal stromal cells in renal repair after ischemic injury. Cytotherapy 2011; 14:162-72. [PMID: 21954833 DOI: 10.3109/14653249.2011.613927] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND AIMS Ischemia-reperfusion (IR) injury is a common cause of acute renal failure. Bone marrow (BM)-derived mesenchymal stromal cells (MSC) delivered after renal IR are renoprotective, but knowledge of the protective mechanism is still in development. This investigation analyzed the protective molecular mechanisms of MSC, in particular relating to modulated oxidative stress. METHODS In vivo and in vitro models of renal IR were analyzed with and without MSC. In vivo, adult male Sprague-Dawley rats were subjected to 40-min unilateral renal IR. Rat BM-derived MSC were administered at 24 h post-IR (IR + MSC). Other groups had IR but no MSC, or MSC but no ischemia (all groups n = 4). Apoptosis, inflammation, oxidative stress and reparative signal transduction molecules or growth factors were studied 4 days post-IR. In vitro, protection by MSC against oxidative stress (0.4 mm hydrogen peroxide) was investigated using rat renal tubular epithelial cells (NRK52E) with or without MSC in co-culture (tissue culture trans-well inserts), followed by similar analyses to the in vivo investigation. RESULTS In vivo, kidneys of IR + MSC animals had significantly increased cell proliferation/regeneration (cells positive for proliferating cell nuclear antigen, expression of epidermal growth factor), increased heme-oxygenase-1 (improved cell survival, anti-oxidant) and decreased 8-OHdG (decreased oxidative stress). In vitro, MSC delivered with oxidative stress significantly decreased apoptosis and Bax (pro-apoptotic protein), and increased mitosis and phospho-ERK1/2, thereby minimizing the damaging outcome and maximizing the regenerative effect after oxidative stress. CONCLUSIONS The benefits of MSC, in IR, were primarily pro-regenerative, sometimes anti-apoptotic, and novel anti-oxidant mechanisms were identified.
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Affiliation(s)
- Hongyan Liu
- Centre for Kidney Disease Research, University of Queensland School of Medicine, Princess Alexandra Hospital, Brisbane, Australia
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Schley G, Klanke B, Schödel J, Forstreuter F, Shukla D, Kurtz A, Amann K, Wiesener MS, Rosen S, Eckardt KU, Maxwell PH, Willam C. Hypoxia-inducible transcription factors stabilization in the thick ascending limb protects against ischemic acute kidney injury. J Am Soc Nephrol 2011; 22:2004-15. [PMID: 21921145 DOI: 10.1681/asn.2010121249] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Hypoxia-inducible transcription factors (HIF) protect cells against oxygen deprivation, and HIF stabilization before ischemia mitigates tissue injury. Because ischemic acute kidney injury (AKI) often involves the thick ascending limb (TAL), modulation of HIF in this segment may be protective. Here, we generated mice with targeted TAL deletion of the von Hippel-Lindau protein (Vhl), which mediates HIF degradation under normoxia, using Tamm-Horsfall protein (Thp)-driven Cre expression. These mice showed strong expression of HIF-1α in TALs but no changes in kidney morphology or function under control conditions. Deficiency of Vhl in the TAL markedly attenuated proximal tubular injury and preserved TAL function following ischemia-reperfusion, which may be partially a result of enhanced expression of glycolytic enzymes and lactate metabolism. These results highlight the importance of the thick ascending limb in the pathogenesis of AKI and suggest that pharmacologically targeting the HIF system may have potential to prevent and mitigate AKI.
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Affiliation(s)
- Gunnar Schley
- Department of Nephrology and Hypertension, Friedrich-Alexander-University, Erlangen-Nuremberg, Krankenhausstrasse 12, 91054 Erlangen, Germany
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Godoy JR, Oesteritz S, Hanschmann EM, Ockenga W, Ackermann W, Lillig CH. Segment-specific overexpression of redoxins after renal ischemia and reperfusion: protective roles of glutaredoxin 2, peroxiredoxin 3, and peroxiredoxin 6. Free Radic Biol Med 2011; 51:552-61. [PMID: 21586322 DOI: 10.1016/j.freeradbiomed.2011.04.036] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2011] [Revised: 04/06/2011] [Accepted: 04/20/2011] [Indexed: 12/25/2022]
Abstract
The disruption of redox control, i.e., oxidative stress, is one of the most destructive causes of ischemia-reperfusion (IR) injury. Thioredoxin (Trx) family proteins play a major role in the cellular response to oxidative stress. Here, we systematically investigated the levels and tissue distribution of 15 members of this family (Trx and TrxR 1 and 2, Nrx, Prx 1-6, and Grx 1-3 and 5) in mouse kidneys after induction of IR by comparing control, clamped, and contralateral organs. After IR, levels of various redoxins were quantified. Immunohistochemical analysis revealed segment-specific alterations induced by the ischemic insult. Grx2, Prx3, and Prx6 were highly expressed in proximal tubule cells. Overexpression of these proteins in HEK293 and HeLa cells subjected to hypoxia and reoxygenation revealed higher survival and proliferation rates and lower oxidative damage compared to controls. Furthermore, we report for the first time the accumulation of Grx1 at the apical side of distal convoluted cells and the specific secretion of Grx1 into the urine after IR. The differences in both the basal equipment and the segment-specific responses of the antioxidant proteins may contribute to the distinct susceptibilities and regeneration processes of the various segments of the nephron to the IR insult.
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Affiliation(s)
- José R Godoy
- Institut für Klinische Zytobiologie und Zytopathologie, Fachbereich Medizin, Philipps-Universität, DE-35037 Marburg, Germany.
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Robert R, Ghazali DA, Favreau F, Mauco G, Hauet T, Goujon JM. Gender difference and sex hormone production in rodent renal ischemia reperfusion injury and repair. JOURNAL OF INFLAMMATION-LONDON 2011; 8:14. [PMID: 21658244 PMCID: PMC3127739 DOI: 10.1186/1476-9255-8-14] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2010] [Accepted: 06/09/2011] [Indexed: 01/29/2023]
Abstract
BACKGROUND Several lines of evidence suggest a protective effect of female sex hormones in several organs subjected to ischemia-reperfusion injury. The aim of the study was to investigate sex hormone production in male rats after a renal ischemia-reperfusion sequence and analyze the influence of gender differences on tissue remodelling during the recovery process. METHOD Age-matched sexually mature male and female rats were subjected to 60 min of renal unilateral ischemia by pedicle clamping with contralateral nephrectomy and followed for 1 or 5 days after reperfusion. Plasma creatinine, systemic testosterone, progesterone and estradiol levels were determined. Tubular injury, cell proliferation and inflammation, were evaluated as well as proliferating cell nuclear antigen, vimentin and translocator protein (TSPO) expressions by immunohistochemistry. RESULTS After 1 and 5 days of reperfusion, plasma creatinine was significantly higher in males than in females, supporting the high mortality in this group. After reperfusion, plasma testosterone levels decreased whereas estradiol significantly increased in male rats. Alterations of renal function, associated with tubular injury and inflammation persisted during the 5 days post-ischemia-reperfusion, and a significant improvement was observed in females at 5 days of reperfusion. Proliferating cell nuclear antigen and vimentin expression were upregulated in kidneys from males and attenuated in females, in parallel to injury development. TSPO expression was transiently increased in proximal tubules in male rats. CONCLUSIONS After ischemia, renal function recovery and tissue injury is gender-dependent. These differences are associated with a modulation of sex hormone production and a modification of tissue remodeling and proliferative cell processes.
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Affiliation(s)
- René Robert
- CHU Poitiers, Service de Réanimation Médicale Poitiers, F-86000, France.
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