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Aouey B, Boukholda K, Ciobica A, Burlui V, Soulimani R, Chigr F, Fetoui H. Renal Fibrosis and Oxidative Stress Induced by Silica Nanoparticles in Male Rats and Its Molecular Mechanisms. Iran J Pharm Res 2024; 23:e143703. [PMID: 38655071 PMCID: PMC11036645 DOI: 10.5812/ijpr-143703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 01/17/2024] [Accepted: 01/24/2024] [Indexed: 04/26/2024]
Abstract
Background The utilization of amorphous silica nanoparticles (SiNPs) is gaining popularity in various applications, but it poses a potential risk to human and environmental health. However, the underlying causes and mechanisms of SiNPs-induced kidney damage are still largely unknown. Objectives This study aimed to investigate the SiNPs-induced damage in the kidney and further explore the possible mechanisms of SiNPs-induced nephrotoxicity. Methods Thirty adult male rats were divided into 3 different groups. Rats in groups 2 and 3 were administered SiNPs at 2 dosage levels (25 and 100 mg/kg of body weight), while the rats in the control group received no treatment for 28 days. Reactive oxygen species (ROS), antioxidant enzyme activities (glutathione peroxidase [GPx], superoxide dismutase [SOD], and catalase [CAT]), glutathione (GSH) levels, and oxidation markers (such as lipid peroxidation [malondialdehyde (MDA)] and protein oxidation [protein carbonyl (PCO)]) were analyzed in the kidney tissue. Additionally, renal fibrogenesis was studied through histopathological examination and the expression levels of fibrotic biomarkers. Results The findings revealed that in vivo treatment with SiNPs significantly triggered oxidative stress in kidney tissues in a dose-dependent manner. This was characterized by increased production of ROS, elevated levels of MDA, PCO, and nitric oxide (NO), along with a significant decline in the activities of SOD, CAT, GPx, and reduced GSH. These changes were consistent with the histopathological analysis, which indicated interstitial fibrosis with mononuclear inflammatory cell aggregation, tubular degeneration, glomerulonephritis, and glomerular atrophy. The fibrosis index was confirmed using Masson's trichrome staining. Additionally, there was a significant upregulation of fibrosis-related genes, including transforming growth factor-beta 1 (TGF-β1), matrix metalloproteinases 2 and 9 (MMP-2/9), whereas the expression of tissue inhibitor of metalloproteinase 2 (TIMP2) was downregulated. Conclusions This study provided a new research clue for the role of ROS and deregulated TGF-β signaling pathway in SiNPs nephrotoxicity.
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Affiliation(s)
- Bakhta Aouey
- Laboratory of Toxicology-Microbiology and Environmental Health (17ES06), Faculty of Sciences of Sfax, University of Sfax, BP1171, 3000 Sfax, Tunisia
| | - Khadija Boukholda
- Laboratory of Toxicology-Microbiology and Environmental Health (17ES06), Faculty of Sciences of Sfax, University of Sfax, BP1171, 3000 Sfax, Tunisia
| | - Alin Ciobica
- Department of Biology, Faculty of Biology, “Alexandru Ioan Cuza” University of Iasi, Bd. Carol I 20A, 700505 Iasi, Romania
- Center of Biomedical Research, Romanian Academy, Iasi, Romania
- Academy of Romanian Scientists, 3 Ilfov, 050044, Bucharest, Romania
| | - Vasile Burlui
- Academy of Romanian Scientists, 3 Ilfov, 050044, Bucharest, Romania
- Department of Biomaterials, Faculty of Dental Medicine, Apollonia University, 700511 Iasi, Romania
| | - Rachid Soulimani
- Neurotoxicology and Bioactivity/LCOMS, Campus Bridoux, University of Lorraine, 57070, Metz, France
| | - Fatiha Chigr
- Biological Engineering Laboratory, Faculty of Sciences and Techniques, Sultan Moulay Slimane University, Beni Mellal, Morocco
| | - Hamadi Fetoui
- Laboratory of Toxicology-Microbiology and Environmental Health (17ES06), Faculty of Sciences of Sfax, University of Sfax, BP1171, 3000 Sfax, Tunisia
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Rai R, Verma SK, Kim D, Ramirez V, Lux E, Li C, Sahoo S, Wilsbacher LD, Vaughan DE, Quaggin SE, Ghosh AK. A novel acetyltransferase p300 inhibitor ameliorates hypertension-associated cardio- renal fibrosis. Epigenetics 2017; 12:1004-1013. [PMID: 28933600 PMCID: PMC5788418 DOI: 10.1080/15592294.2017.1370173] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Hypertension-associated end-organ damage commonly leads to cardiac and renal fibrosis. As no effective anti-fibrotic therapy currently exists, the unchecked progression of fibrogenesis manifests as cardio-renal failure and early death. We have previously shown that FATp300-p300 with intrinsic factor acetyltransferase activity-is an essential epigenetic regulator of fibrogenesis, and is elevated in several fibrotic tissues. In this report, we investigate the therapeutic efficacy of a novel FATp300 inhibitor, L002, in a murine model of hypertensive cardio-renal fibrosis. Additionally, we examine the effects of L002 on cellular pro-fibrogenic processes and provide mechanistic insights into its antifibrogenic action. Utilizing cardiac fibroblasts, podocytes, and mesangial cells, we demonstrate that L002 blunts FATp300-mediated acetylation of specific histones. Further, incubating cells with L002 suppresses several pro-fibrogenic processes including cellular proliferation, migration, myofibroblast differentiation and collagen synthesis. Importantly, systemic administration of L002 in mice reduces hypertension-associated pathological hypertrophy, cardiac fibrosis and renal fibrosis. The anti-hypertrophic and anti-fibrotic effects of L002 were independent of blood pressure regulation. Our work solidifies the role of epigenetic regulator FATp300 in fibrogenesis and establishes it as a pharmacological target for reducing pathological matrix remodeling and associated pathologies. Additionally, we discover a new therapeutic role of L002, as it ameliorates hypertension-induced cardio-renal fibrosis and antagonizes pro-fibrogenic responses in fibroblasts, podocytes and mesangial cells.
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Affiliation(s)
- Rahul Rai
- a Feinberg Cardiovascular Research Institute, Feinberg School of Medicine , Northwestern University , Chicago , Illinois , USA
| | - Suresh K Verma
- a Feinberg Cardiovascular Research Institute, Feinberg School of Medicine , Northwestern University , Chicago , Illinois , USA
| | - David Kim
- a Feinberg Cardiovascular Research Institute, Feinberg School of Medicine , Northwestern University , Chicago , Illinois , USA
| | - Veronica Ramirez
- a Feinberg Cardiovascular Research Institute, Feinberg School of Medicine , Northwestern University , Chicago , Illinois , USA
| | - Elizabeth Lux
- a Feinberg Cardiovascular Research Institute, Feinberg School of Medicine , Northwestern University , Chicago , Illinois , USA
| | - Chengjin Li
- a Feinberg Cardiovascular Research Institute, Feinberg School of Medicine , Northwestern University , Chicago , Illinois , USA
| | - Susmita Sahoo
- a Feinberg Cardiovascular Research Institute, Feinberg School of Medicine , Northwestern University , Chicago , Illinois , USA
| | - Lisa D Wilsbacher
- a Feinberg Cardiovascular Research Institute, Feinberg School of Medicine , Northwestern University , Chicago , Illinois , USA
| | - Douglas E Vaughan
- a Feinberg Cardiovascular Research Institute, Feinberg School of Medicine , Northwestern University , Chicago , Illinois , USA
| | - Susan E Quaggin
- a Feinberg Cardiovascular Research Institute, Feinberg School of Medicine , Northwestern University , Chicago , Illinois , USA
| | - Asish K Ghosh
- a Feinberg Cardiovascular Research Institute, Feinberg School of Medicine , Northwestern University , Chicago , Illinois , USA
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Abstract
The interaction between glomerular endothelial cells (GECs) and glomerular mesangial cells (GMCs) is an essential aspect of diabetic nephropathy (DN). Therefore, understanding how GECs communicate with GMCs in the diabetic environment is crucial for the development of new targets for the prevention and treatment of DN. Exosomes, nanometer-sized extracellular membrane vesicles secreted by various cell types, play important roles in cell-to-cell communication via the transfer of mRNA, microRNA and protein. In this study, we demonstrate that high glucose (HG)-treated GECs secrete a higher number of exosomes highly enriched in TGF-β1 mRNA compared with normal glucose (NG)-treated GECs. Exosomes released by HG-treated GECs can promote α-smooth muscle actin (α-SMA) expression, proliferation and extracellular matrix protein overproduction in GMCs through the TGF-β1/Smad3 signaling pathway. Thus, we provide new insights into the pathogenesis of DN that involves intercellular transfer of TGF-β1 mRNA in the GEC-to-GMC direction via exosomes. Summary: In this study, we demonstrate that TGF-β1-containing exosomes from high glucose-treated glomerular endothelial cells can activate glomerular mesangial cells to promote renal fibrosis.
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Affiliation(s)
- Xiao-Ming Wu
- Beijing Key Lab of TCM Collateral Disease Theory Research, School of Traditional Chinese Medicine, Capital Medical University, No.10, Youanmenwai, Xitoutiao, Fengtai District, Beijing 100069, China
| | - Yan-Bin Gao
- Beijing Key Lab of TCM Collateral Disease Theory Research, School of Traditional Chinese Medicine, Capital Medical University, No.10, Youanmenwai, Xitoutiao, Fengtai District, Beijing 100069, China
| | - Fang-Qiang Cui
- Beijing Key Lab of TCM Collateral Disease Theory Research, School of Traditional Chinese Medicine, Capital Medical University, No.10, Youanmenwai, Xitoutiao, Fengtai District, Beijing 100069, China
| | - Na Zhang
- Beijing Key Lab of TCM Collateral Disease Theory Research, School of Traditional Chinese Medicine, Capital Medical University, No.10, Youanmenwai, Xitoutiao, Fengtai District, Beijing 100069, China
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Park SH, Cho HJ, Jeong YJ, Shin JM, Kang JH, Park KK, Choe JY, Park YY, Bae YS, Han SM, Moon SK, Kim WJ, Choi YH, Chang YC. Melittin inhibits TGF-β-induced pro-fibrotic gene expression through the suppression of the TGFβRII-Smad, ERK1/2 and JNK-mediated signaling pathway. Am J Chin Med 2014; 42:1139-1152. [PMID: 25178280 DOI: 10.1142/s0192415x14500712] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
Renal fibrosis is characterized by the excessive accumulation of extracellular matrix (ECM) proteins such as type I collagen, fibronectin, and by the increased expression of PAI-1. This study evaluated the anti-fibrotic effect of bee venom and its major compounds (melittin and apamin) on TGF-β-induced pro-fibrotic gene expression. Bee venom and melittin significantly suppressed type I collagen, fibronectin, and PAI-1 protein expression in the TGF-β-treated kidney fibroblast. However, apamin only inhibited the expression of fibronectin and type I collagen. These results indicated that the inhibitory effects of bee venom on TGF-β-induced pro-fibrotic gene expression are caused by melittin. Moreover, we attempted to elucidate mechanisms underlying the anti-fibrotic effect of melittin. Melittin dramatically inhibited the phosphorylation of TGFβRII and Smad2/3. Also, melittin inhibited the phosphorylation of ERK1/2 and JNK, but not the phosphorylation of PI3K, Akt, and p38. These results suggested that melittin inhibits TGF-β-induced pro-fibrotic genes expression through the suppression of TGFβR-Smad2/3, ERK1/2, and JNK phosphorylation, and melittin can be used as a clinical drug for the treatment of fibrosis associated with renal diseases.
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Affiliation(s)
- Su-Hyun Park
- Research Institute of Biomedical Engineering and Department of Medicine, Catholic University of Daegu School of Medicine, Daegu 705-718, Republic of Korea
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Yoon HE, Kim SJ, Kim SJ, Chung S, Shin SJ. Tempol attenuates renal fibrosis in mice with unilateral ureteral obstruction: the role of PI3K-Akt-FoxO3a signaling. J Korean Med Sci 2014; 29:230-7. [PMID: 24550650 PMCID: PMC3924002 DOI: 10.3346/jkms.2014.29.2.230] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Accepted: 11/29/2013] [Indexed: 12/14/2022] Open
Abstract
This study investigated whether tempol, an anti-oxidant, protects against renal injury by modulating phosphatidylinositol 3-kinase (PI3K)-Akt-Forkhead homeobox O (FoxO) signaling. Mice received unilateral ureteral obstruction (UUO) surgery with or without administration of tempol. We evaluated renal damage, oxidative stress and the expression of PI3K, Akt, FoxO3a and their target molecules including manganese superoxide dismutase (MnSOD), catalase, Bax, and Bcl-2 on day 3 and day 7 after UUO. Tubulointerstitial fibrosis, collagen deposition, α-smooth muscle actin-positive area, and F4/80-positive macrophage infiltration were significantly lower in tempol-treated mice compared with control mice. The expression of PI3K, phosphorylated Akt, and phosphorylated FoxO3a markedly decreased in tempol-treated mice compared with control mice. Tempol prominently increased the expressions of MnSOD and catalase, and decreased the production of hydrogen peroxide and lipid peroxidation in the obstructed kidneys. Significantly less apoptosis, a lower ratio of Bax to Bcl-2 expression and fewer apoptotic cells in TUNEL staining, and decreased expression of transforming growth factor-β1 were observed in the obstructed kidneys from tempol-treated mice compared with those from control mice. Tempol attenuates oxidative stress, inflammation, and fibrosis in the obstructed kidneys of UUO mice, and the modulation of PI3K-Akt-FoxO3a signaling may be involved in this pathogenesis.
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Affiliation(s)
- Hye Eun Yoon
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Division of Nephrology, Department of Internal Medicine, Incheon St. Mary's Hospital, Incheon, Korea
| | - Soo Jeong Kim
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sung Jun Kim
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Division of Nephrology, Department of Internal Medicine, Incheon St. Mary's Hospital, Incheon, Korea
| | - Sungjin Chung
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seok Joon Shin
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Division of Nephrology, Department of Internal Medicine, Incheon St. Mary's Hospital, Incheon, Korea
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