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Al-Sroji RY, Al-Laham S, Almandili A. Protective effects of vitamin D 3 (cholecalciferol) on vancomycin-induced oxidative nephrotoxic damage in rats. PHARMACEUTICAL BIOLOGY 2023; 61:755-766. [PMID: 37139624 PMCID: PMC10161947 DOI: 10.1080/13880209.2023.2204916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
CONTEXT Vancomycin (VCM), an important antibiotic against refractory infections, has been used to treat secondary infections in severe COVID-19 patients. Regrettably, VCM treatment has been associated with nephrotoxicity. Vitamin D3 can prevent nephrotoxicity through its antioxidant effect. OBJECTIVE This study tests the antioxidant effect of vitamin D3 in the prevention of VCM-induced nephrotoxicity. MATERIALS AND METHODS Wistar Albino rats (21) were randomly divided into 3 groups: (A) control; (B) VCM 300 mg/kg daily for 1 week; and (C) VCM plus vitamin D3 500 IU/kg daily for 2 weeks. All the rats were sacrificed and serum was separated to determine kidney function parameters. Their kidneys were also dissected for histological examination and for oxidative stress markers. RESULTS Lipid peroxidation, creatinine, and urea levels decreased significantly (p < 0.0001) in the vitamin D3-treated group (14.46, 84.11, 36.17%, respectively) compared to the VCM group that was given VCM (MIC<2 μg/mL) only. A significant increase was observed in superoxide dismutase levels in the vitamin D3-treated group (p < 0.05) compared to rats without treatment. Furthermore, kidney histopathology of the rats treated with vitamin D3 showed that dilatation, vacuolization and necrosis tubules decreased significantly (p < 0.05) compared with those in the VCM group. Glomerular injury, hyaline dystrophy, and inflammation improved significantly in the vitamin D3 group (p < 0.001, p < 0.05, p < 0.05, respectively) compared with the VCM group. DISCUSSION AND CONCLUSIONS Vitamin D3 can prevent VCM nephrotoxicity. Therefore, the appropriate dose of this vitamin must be determined, especially for those infected with COVID-19 and receiving VCM, to manage their secondary infections.
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Affiliation(s)
- Rouba Yasser Al-Sroji
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Damascus University, Damascus, Syria
| | - Shaza Al-Laham
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Damascus University, Damascus, Syria
| | - Ahmad Almandili
- Department of Histopathology, Faculty of Dentistry, Damascus University, Damascus, Syria
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Huang S, Tang Y, Liu T, Zhang N, Yang X, Yang D, Hong G. A Novel Antioxidant Protects Against Contrast Medium-Induced Acute Kidney Injury in Rats. Front Pharmacol 2020; 11:599577. [PMID: 33329004 PMCID: PMC7729082 DOI: 10.3389/fphar.2020.599577] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 10/23/2020] [Indexed: 12/29/2022] Open
Abstract
Many studies proposed that oxidative stress and apoptosis are key mechanisms in the pathogenesis of contrast-induced acute kidney injury (CI-AKI). Xylose-pyrogallol conjugate (XP) is an original effective antioxidant that showed decent antioxidant and anti-apoptosis effect before. Thus the therapeutic effect and mechanism of XP in preventing CI-AKI in the short and long term were investigated in this research. Renal function and histological grade were evaluated to determine the severity of renal injury. Kidney samples were then collected for the measurement of oxidative stress markers and the detection of apoptosis. Transmission electron microscopy (TEM) and western blot of mitochondrial protein were utilized for the analysis of the mitochondrial conditions. The results demonstrated that the CI-AKI rats caused a significant decrease in renal function accompanied by a remarkable increase in Malondialdehyde (MDA), bax, caspase-3, cytochrome c (Cyt C) level, TdT-mediated dUTP nick end labeling (TUNEL) positive apoptotic cells, and damaged mitochondria, while a decline in antioxidase activities and mitochondrial superoxide dismutase 2 (SOD2) expression compared with the control rats. However, when XP (50 or 100 or 200 mg/kg/day) was given orally for consecutive 7 days before CI-AKI modeling, XP (200 mg/kg) showed a better capability to restore renal dysfunction, histopathological appearance, the level of apoptosis, mitochondrial damage, oxidative stress, and fibrosis generation without interference in computed tomographic imaging. Our study indicated that antioxidant XP played a nephroprotective role probably via antiapoptotic and antioxidant mechanisms. Besides, XP may regulate the mitochondria pathway via decreasing the ratio of bax/bcl-2, inhibiting caspase-3 expression, cytochrome c release, and superoxide dismutase 2 activity. Overall, XP as a high-efficient antioxidant may have the potentials to prevent CI-AKI.
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Affiliation(s)
- Shuo Huang
- Clinical College of Orthopedics, Tianjin Medical University, Tianjin Hospital, Tianjin, China
| | - Yanyan Tang
- Clinical College of Orthopedics, Tianjin Medical University, Tianjin Hospital, Tianjin, China
| | - Tianjun Liu
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin, China
| | - Ning Zhang
- School of Chemical Engineering, Anhui University of Science and Technology, Huainan, China
| | - Xueyan Yang
- Clinical College of Orthopedics, Tianjin Medical University, Tianjin Hospital, Tianjin, China
| | - Dingwei Yang
- Department of Nephrology, Tianjin Hospital, Tianjin, China
| | - Ge Hong
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin, China
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Rutin Attenuates Vancomycin-Induced Nephrotoxicity by Ameliorating Oxidative Stress, Apoptosis, and Inflammation in Rats. Antimicrob Agents Chemother 2018; 63:AAC.01545-18. [PMID: 30397060 DOI: 10.1128/aac.01545-18] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Accepted: 10/25/2018] [Indexed: 01/12/2023] Open
Abstract
Nephrotoxicity is the major limiting factor for the clinical use of vancomycin (VCM) for treatment of serious infections caused by multiresistant Gram-positive bacteria. This study investigated the renal protective activity of rutin in a rat model of VCM-induced kidney injury in male Wistar rats. VCM administered intraperitoneally at 200 mg/kg twice daily for 7 successive days resulted in significant elevation of blood urea nitrogen and creatinine, as well as urinary N-acetyl-β-D-glucosaminidase. Coadministration of VCM with oral rutin at 150 mg/kg significantly reduced these markers of kidney damage. Rutin also significantly attenuated VCM-induced oxidative stress, inflammatory cell infiltration, apoptosis, and decreased interleukin-1β and tumor necrosis factor alpha levels (all P < 0.05 or 0.01) in kidneys. Renal recovery from VCM injury was achieved by rutin through increases in Nrf2 and HO-1 and a decrease in NF-κB expression. Our results demonstrated a protective effect of rutin on VCM-induced kidney injury through suppression of oxidative stress, apoptosis, and downregulation of the inflammatory response. This study highlights a role for oral rutin as an effective intervention to ameliorate nephrotoxicity in patients undergoing VCM therapy.
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Zhang H, Chang Z, Mehmood K, Abbas RZ, Nabi F, Rehman MU, Wu X, Tian X, Yuan X, Li Z, Zhou D. Nano Copper Induces Apoptosis in PK-15 Cells via a Mitochondria-Mediated Pathway. Biol Trace Elem Res 2018; 181:62-70. [PMID: 28497347 DOI: 10.1007/s12011-017-1024-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 04/12/2017] [Indexed: 12/31/2022]
Abstract
Nano-sized copper particles are widely used in various chemical, physical, and biological fields. However, earlier studies have shown that nano copper particles (40-100 μg/mL) can induce cell toxicity and apoptosis. Therefore, this study was conducted to investigate the role of nano copper in mitochondrion-mediated apoptosis in PK-15 cells. The cells were treated with different doses of nano copper (20, 40, 60, and 80 μg/mL) to determine the effects of apoptosis using acridine orange/ethidium bromide (AO/EB) fluorescence staining and a flow cytometry assay. The levels of malondialdehyde (MDA) and superoxide dismutase (SOD) in the PK-15 cells were examined using commercially available kits. Moreover, the mRNA levels of the Bax, Bid, Caspase-3, and CYCS genes were assessed by real-time PCR. The results revealed that nano copper exposure induced apoptosis and changed the mitochondrial membrane potential. In addition, nano copper significantly altered the levels of the Bax, Bid, Caspase-3, and CYCS genes at a concentration of 40 μg/mL. To summarize, nano copper significantly (P < 0.05) decreased the level of SOD and increased the level of MDA in PK-15 cells. Altogether, these results suggest that nano copper can play an important role in inducing the apoptotic pathway in PK-15 cells, which may be the mechanism by which nano copper induces nephrotoxicity.
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Affiliation(s)
- Hui Zhang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Zhenyu Chang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Khalid Mehmood
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
- University College of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Rao Zahid Abbas
- Department of Parasitology, Faculty of Veterinary Science, University of Agriculture, Faisalabad, 38000, Pakistan
| | - Fazul Nabi
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Mujeeb Ur Rehman
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Xiaoxing Wu
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Xinxin Tian
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Xiaodan Yuan
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Zhaoyang Li
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Donghai Zhou
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China.
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Zhang H, Wu X, Mehmood K, Chang Z, Li K, Jiang X, Nabi F, Ijaz M, Rehman MU, Javed MT, Zhou D. Intestinal epithelial cell injury induced by copper containing nanoparticles in piglets. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2017; 56:151-156. [PMID: 28938148 DOI: 10.1016/j.etap.2017.09.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 09/04/2017] [Accepted: 09/15/2017] [Indexed: 06/07/2023]
Abstract
The nano copper has been widely used in modern clinical medicine practice. However, it has been noticed that nano copper particles induce cell injury and toxicity. The present study was designed to determine the effect of nano copper particles on cell injury of intestinal epithelial cells (IECs) in piglets. The IECs were treated with different doses of nano copper (5, 10, 20 and 40μg/ml) for 24-48h to observe cell injury and toxicity. Cell injury was measured based on morphological and other changes including oxidative stress and genes expression. The oxidative stress markers were assayed by differential expression levels of SOD, MDA and Metallothionein (MT) in addition to CTR1, SOD1, COX17, MT and ATOX1 genes expression. Cellular morphology showed an increasing growth of cells without nano copper treatment and nano copper showed significant damage to IECs with higher dose as compared to low dose. Higher doses of copper nanoparticles (10, 20 and 40μg/ml) have membrane damaging effect on the intestinal epithelial cells, whereas MDA contents and MT value were significantly increased, and SOD activity was decreased with the increase in concentration of nanoparticles. Nano copper up-regulated the CTR1 and SOD1 genes and down-regulated the relative expression of COX17, MT and ATOX1 genes significantly in a dose-dependent manner. The findings of the current study provide important insights that nano copper plays an important role in intestinal epithelial cell injury and oxidative stress.
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Affiliation(s)
- Hui Zhang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Xiaoxing Wu
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Khalid Mehmood
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China; University College of Veterinary and Animal Sciences, Islamia University of Bahawalpur 63100, Pakistan
| | - Zhenyu Chang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Kun Li
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Xiong Jiang
- Hubei Three Gorges Polytechnic, Yichang 443000, People's Republic of China
| | - Fazul Nabi
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Muhammad Ijaz
- Department of Clinical Medicine & Surgery, University of Veterinary and Animal Sciences Lahore 54000, Pakistan
| | - Mujeeb Ur Rehman
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | | | - Donghai Zhou
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China.
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Nanosized copper oxide induces apoptosis through oxidative stress in podocytes. Arch Toxicol 2012; 87:1067-73. [DOI: 10.1007/s00204-012-0925-0] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Accepted: 08/06/2012] [Indexed: 10/28/2022]
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Basarslan F, Yilmaz N, Ates S, Ozgur T, Tutanc M, Motor VK, Arica V, Yilmaz C, Inci M, Buyukbas S. Protective effects of thymoquinone on vancomycin-induced nephrotoxicity in rats. Hum Exp Toxicol 2012; 31:726-33. [PMID: 22318306 DOI: 10.1177/0960327111433185] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
AIM Oxidative stress has been implicated as a potential responsible mechanism in the pathogenesis of vancomycin (VCM)-induced renal toxicity. Therefore, we aimed to investigate the protective effect of thymoquinone (TQ) against VCM-induced nephrotoxicity by tissue oxidant/antioxidant parameters and histological changes in rats. MATERIALS AND METHODS Wistar albino rats were randomly separated into four groups consisting of seven rats per group. The groups had normal saline (control group), VCM, VCM and TQ and TQ, respectively. VCM was injected intraperitoneally at a dose of 200 mg/kg and continued at 12-h intervals for 7 days. TQ was injected intraperitoneally at a dose of 10 mg/kg and continued at 24 h intervals for 8 days. Animals were killed and blood samples were analyzed for the levels of serum blood urea nitrogen (BUN) and creatinine (Cr). Kidney specimens were analyzed for levels of malondialdehyde (MDA) and activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) as well as for histopathological changes. RESULTS We found that the levels of serum BUN, Cr and kidney tissue MDA were increased in the VCM group. Activities of SOD and GSH-Px in kidney tissue were decreased. TQ administration ameliorated significantly these changes. CONCLUSION These results indicate that the TQ produces a protective mechanism against VCM-induced nephrotoxicity and suggest a role of oxidative stress in pathogenesis.
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Chirino YI, Pedraza-Chaverri J. Role of oxidative and nitrosative stress in cisplatin-induced nephrotoxicity. ACTA ACUST UNITED AC 2008; 61:223-42. [PMID: 18986801 DOI: 10.1016/j.etp.2008.09.003] [Citation(s) in RCA: 343] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2008] [Revised: 09/04/2008] [Accepted: 09/10/2008] [Indexed: 02/07/2023]
Abstract
cis-Diamminedichloroplatinum (II) (cisplatin) is an important chemotherapeutic agent useful in the treatment of several cancers; however, it has several side effects such as nephrotoxicity. The role of the oxidative and nitrosative stress in cisplatin-induced nephrotoxicity is additionally supported by the protective effect of several free radical scavengers and antioxidants. Furthermore, in in vitro experiments, antioxidants or reactive oxygen species (ROS) scavengers have a cytoprotective effect on cells exposed to cisplatin. Recently, the participation of nitrosative stress has been more explored in cisplatin-induced renal damage. The use of a water-soluble Fe(III) porphyrin complex able to metabolize peroxynitrite (ONOO(-)) has demonstrated that this anion contributes to both in vivo and in vitro cisplatin-induced toxicity. ONOO(-) is produced when nitric oxide (NO*) reacts with superoxide anion (O(2)(*-)); currently, there are evidences suggesting alterations in NO* production after cisplatin treatment and the evidence appear to NO* has a toxic effect. This article goes through current evidence of the mechanism by more than a few compounds have beneficial effects on cisplatin-induced nephrotoxicity, contribute to understanding the role of oxidative and nitrosative stress and suggest several points as part of the mechanism of cisplatin toxicity.
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Affiliation(s)
- Yolanda I Chirino
- Subdirección de Investigación Básica, Instituto Nacional de Cancerología, Tlalpan, DF, Mexico.
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Nilsson UA, Nyström J, Buvall L, Ebefors K, Björnson-Granqvist A, Holmdahl J, Haraldsson B. The fungal nephrotoxin orellanine simultaneously increases oxidative stress and down-regulates cellular defenses. Free Radic Biol Med 2008; 44:1562-9. [PMID: 18279679 DOI: 10.1016/j.freeradbiomed.2008.01.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2007] [Revised: 11/26/2007] [Accepted: 01/09/2008] [Indexed: 10/22/2022]
Abstract
Confusion of various nephrotoxic Cortinarius species with edible mushrooms occurs every year throughout Europe and North America. The toxin, orellanine (OR), accumulates selectively in renal tubular epithelium with ensuing renal failure after several days as the only clinical manifestation. This study was performed to clarify the mechanisms behind the kidney damage. Sprague-Dawley rats, 100 g bw, received various doses of purified OR ip (0-5 mg/kg bw). One week later, renal function (GFR) was determined (51Cr-EDTA), ascorbyl radicals in venous blood were analyzed using electron spin resonance, and oxidative protein damage was evaluated immunohistochemically. One OR-treated group (3.5 mg/kg) simultaneously received superoxide dismutase (SOD) targeted to tubular epithelium (HC-SOD; 10 mg/kg ip daily for 5 days). RT-PCR was used for analysis of mRNA expression of genes related to oxidative stress. OR caused a dose-dependent decrease in GFR, paralleled by increased levels of ascorbyl radicals and oxidative protein damage. Antioxidant treatment with HC-SOD decreased renal function even more and also increased tissue damage and mortality. Renal mRNA levels for key components in the antioxidative defense were strongly decreased, whereas those for several cytokines were increased. The data strongly suggest that OR nephrotoxicity in vivo is mediated by oxidative stress, including a virtual shutdown of important antioxidative enzymes. We interpret the unexpected effect of HC-SOD in terms of unbalanced SOD and catalase levels in the presence of OR, leading to massive generation of *OH and cell death.
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Affiliation(s)
- Ulf A Nilsson
- The Renal Center, Department of Nephrology, University of Göteborg, SE 405 30 Göteborg, Sweden.
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Cetin H, Olgar S, Oktem F, Ciris M, Uz E, Aslan C, Ozguner F. Novel evidence suggesting an anti-oxidant property for erythropoietin on vancomycin-induced nephrotoxicity in a rat model. Clin Exp Pharmacol Physiol 2007; 34:1181-5. [PMID: 17880374 DOI: 10.1111/j.1440-1681.2007.04695.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
1. The aim of the present study was to investigate the role of oxidative stress in renal injury and to determine whether erythropoietin (EPO) acts as an anti-oxidant in vancomycin (VCM)-induced renal impairment. 2. Twenty-four rats were divided into three groups as follows: (i) control (Group 1); (ii) VCM treated (Group 2); and (iii) VCM + EPO treated (Group 3). Vancomycin (200 mg/kg, i.p.) was administered to Groups 2 and 3 for 7 days. Erythropoietin (150 IU/kg, i.p.) treatment was started 24 h before VCM and lasted for 7 days. On Day 8, renal tissues were excised and blood samples were collected. Serum creatinine and blood urea nitrogen were measured, along with renal malondialdehyde (MDA) levels, superoxide dismutase (SOD) and catalase (CAT) activity and tissue VCM levels. The kidneys were examined for any histopathological changes. 3. Renal MDA levels were found to be increased, whereas SOD and CAT activity was decreased, in the VCM-treated group compared with the control group. There was a marked decrease in MDA levels and an increase in SOD activity, but not CAT activity, after VCM + EPO treatment. Marked histopathological alterations, including interstitial oedema, tubular dilatation, tubular epithelial cell desquamation and vacuolization, were observed in VCM-treated rats. Histopathological changes were significantly improved after EPO administration. 4. In conclusion, the present data suggest that oxidative stress plays an important role in VCM-induced nephrotoxicity. Erythropoietin seems to act as an anti-oxidant, diminishing the toxic oxidative effects of VCM on renal tissues.
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Affiliation(s)
- Hasan Cetin
- Department of Pediatrics, Medical Faculty, Suleyman Demirel University, Isparta, Turkey.
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Patel K, Chen Y, Dennehy K, Blau J, Connors S, Mendonca M, Tarpey M, Krishna M, Mitchell JB, Welch WJ, Wilcox CS. Acute antihypertensive action of nitroxides in the spontaneously hypertensive rat. Am J Physiol Regul Integr Comp Physiol 2006; 290:R37-43. [PMID: 16179488 DOI: 10.1152/ajpregu.00469.2005] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Tempol is an amphipathic radical nitroxide (N) that acutely reduces blood pressure (BP) and heart rate (HR) in the spontaneously hypertensive rat (SHR). We investigated the hypothesis that the response to nitroxides is determined by SOD mimetic activity or lipophilicity. Groups ( n = 6–10) of anesthetized SHRs received graded intravenous doses of Ns: tempol (T), 4-amino-tempo (AT), 4-oxo-tempo (OT), 4-trimethylammonium-2,2,6,6-tetramethylpiperidine-1-oxyl iodide (CAT-1), 3-carbamoyl-proxyl (3-CP), or 3-carboxy-proxyl (3-CTPY). Others received native or liposomal (L) Cu/Zn SOD. T and OT are uncharged, AT is positively charged and cell-permeable, and CAT-1 is positively charged and cell-impermeable. 3-CP and 3-CTPY have five-member pyrrolidine rings, whereas T, AT, OT, and CAT-1 have six-member piperidine rings. T and AT reduced mean arterial pressure (MAP) similarly (−48 ± 2 mmHg and −55 ± 8 mmHg) but more ( P < 0.05) than OT and CAT-1. 3-CP and 3-CTPY were ineffective. The group mean change in MAP with piperidine Ns correlated with SOD activity ( r = −0.94), whereas their ED50correlated with lipophilicity ( r = 0.89). SOD and L-SOD did not lower BP acutely but reduced it after 90 min (−32 ± 5 and −31 ± 6 mmHg; P < 0.05 vs. vehicle). Pyrrolidine nitroxides are ineffective antihypertensive agents. The antihypertensive response to piperidine Ns is predicted by SOD mimetic action, and the sensitivity of response is by hydrophilicity. SOD exerts a delayed hypotensive action that is not enhanced by liposome encapsulation, suggesting it must diffuse to an extravascular site.
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Affiliation(s)
- Kinjal Patel
- Georgetown University, Division of Nephrology and Hypertension, 3800 Reservoir Rd., NW, PHC F6003, Washington, DC 20007, USA.
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Oktem F, Arslan MK, Ozguner F, Candir O, Yilmaz HR, Ciris M, Uz E. In vivo evidences suggesting the role of oxidative stress in pathogenesis of vancomycin-induced nephrotoxicity: Protection by erdosteine. Toxicology 2005; 215:227-33. [PMID: 16112787 DOI: 10.1016/j.tox.2005.07.009] [Citation(s) in RCA: 105] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2005] [Revised: 06/30/2005] [Accepted: 07/11/2005] [Indexed: 11/28/2022]
Abstract
The aims of this study were to examine vancomycin (VCM)-induced oxidative stress that promotes production of reactive oxygen species (ROS) and to investigate the role of erdosteine, an expectorant agent, which has also antioxidant properties, on kidney tissue against the possible VCM-induced renal impairment in rats. Rats were divided into three groups: sham, VCM and VCM plus erdosteine. VCM was administrated intraperitoneally (i.p.) with 200mgkg(-1) twice daily for 7 days. Erdosteine was administered orally. VCM administration to control rats significantly increased renal malondialdehyde (MDA) and urinary N-acetyl-beta-d-glucosaminidase (NAG, a marker of renal tubular injury) excretion but decreased superoxide dismutase (SOD) and catalase (CAT) activities. Erdosteine administration with VCM injections caused significantly decreased renal MDA and urinary NAG excretion, and increased SOD activity, but not CAT activity in renal tissue when compared with VCM alone. Erdosteine showed histopathological protection against VCM-induced nephrotoxicity. There were a significant dilatation of tubular lumens, extensive epithelial cell vacuolization, atrophy, desquamation, and necrosis in VCM-treated rats more than those of the control and the erdosteine groups. Erdosteine caused a marked reduction in the extent of tubular damage. It is concluded that oxidative tubular damage plays an important role in the VCM-induced nephrotoxicity and the modulation of oxidative stress with erdosteine reduces the VCM-induced kidney damage both at the biochemical and histological levels.
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Affiliation(s)
- Faruk Oktem
- Department of Pediatric Nephrology, Suleyman Demirel University, School of Medicine, Isparta, Turkey.
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Nishino Y, Takemura S, Minamiyama Y, Hirohashi K, Tanaka H, Inoue M, Okada S, Kinoshita H. Inhibition of vancomycin-induced nephrotoxicity by targeting superoxide dismutase to renal proximal tubule cells in the rat. Redox Rep 2003; 7:317-9. [PMID: 12688519 DOI: 10.1179/135100002125000884] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Vancomycin, a glycopeptide antibiotic, has a broad spectrum against methicillin-resistant Staphylococcus aureus (MRSA). Because vancomycin induces renal dysfunction, the dose and the duration of its administration are limited. The mechanism of vancomycin-induced renal dysfunction is not known. We recently synthesized a hexamethylenediamine-conjugated cationic superoxide dismutase (AH-SOD) which rapidly accumulates in renal proximal tubule cells and inhibits oxidative injury of the kidney. The present work reports the protective effects of AH-SOD against vancomycin-induced renal dysfunction. Male Wistar rats (200-210 g) were intraperitoneally administered with either 200 or 400 mg/kg of vancomycin twice a day for 7 days. Either 5 mg/kg/day AH-SOD or saline was subcutaneously injected 5 min before every vancomycin injection. Biochemical analysis revealed that plasma levels of blood urea nitrogen and creatinine increased significantly in vancomycin-treated group by an AH-SOD-inhibitable mechanism. Histological examination revealed that vancomycin also elicited a marked destruction of glomeruli and necrosis of proximal tubule by an AH-SOD inhibitable mechanism. These results suggest that oxidative stress underlies the pathogenesis of vancomycin-induced nephrotoxicity and that targeting SOD and/or related antioxidants to renal proximal tubule cells might permit the administration of higher doses of vancomycin sufficient for eradication of MRSA without causing renal injury.
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Affiliation(s)
- Yoshihiro Nishino
- Department of Gastroenterology and Hepato-Biliary-Pancreatic Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.
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Inoue M, Sato EF, Nishikawa M, Park AM, Kira Y, Imada I, Utsumi K. Cross talk of nitric oxide, oxygen radicals, and superoxide dismutase regulates the energy metabolism and cell death and determines the fates of aerobic life. Antioxid Redox Signal 2003; 5:475-84. [PMID: 13678536 DOI: 10.1089/152308603768295221] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Although oxygen is required for the energy metabolism in aerobic organisms, it generates reactive oxygen and nitrogen species that impair a wide variety of biological molecules, including lipids, proteins, and DNA, thereby causing various diseases. Because mitochondria are the major site of free radical generation, they are highly enriched with enzymes, such as Mn-type superoxide dismutase in matrix, and antioxidants including GSH on both sides of inner membranes, thus minimizing oxidative stress in and around this organelle. We recently showed that a cross talk of nitric oxide and oxygen radicals regulates the circulation, energy metabolism, reproduction, and remodeling of cells during embryonic development, and functions as a major defense system against pathogens. The present work shows that Cu/Zn-type superoxide dismutase, which has been postulated for a long time to be a cytosolic enzyme, also localizes bound to inner membranes of mitochondria, thereby minimizing oxidative stress in and around this organelle, while mitochondrial association decreases markedly with the variant types of the enzyme found in patients with familial amyotrophic lateral sclerosis. We also report that a cross talk of nitric oxide, superoxide, and molecular oxygen cooperatively regulates the fates of pathogens and their hosts and that oxidative stress in and around mitochondria also determines cell death in the development of animals and tissue injury caused by anticancer agents by some carnitine-inhibitable mechanism.
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Affiliation(s)
- Masayasu Inoue
- Department of Biochemistry and Molecular Pathology, Osaka City University Medical School, Asahimachi, Abeno, Osaka, Japan.
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15
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Chang B, Nishikawa M, Sato E, Utsumi K, Inoue M. L-Carnitine inhibits cisplatin-induced injury of the kidney and small intestine. Arch Biochem Biophys 2002; 405:55-64. [PMID: 12176057 DOI: 10.1016/s0003-9861(02)00342-9] [Citation(s) in RCA: 134] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Although cis-diamminedichloroplatinum (II) (cisplatin) is a potent anticancer drug, clinical use of this agent is highly limited predominantly because of its strong side effects on the kidney and gastrointestinal tracts. We found that cisplatin impaired respiratory function and DNA of mitochondria in renal proximal tubules and small intestinal mucosal cells, thereby inducing apoptosis of epithelial cells. Cisplatin-induced mitochondrial dysfunction and DNA (mtDNA) injury, lipid peroxidation, and apoptosis of epithelial cells in the kidney and small intestine were strongly inhibited by L-carnitine. However, carnitine had no appreciable effect on the tumoricidal action of cisplatin against cancer cells inoculated in the peritoneal cavity. These results indicate that L-carnitine may have therapeutic potential for inhibiting the side effects of cisplatin and other anticancer agents in the kidney and small intestine.
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Affiliation(s)
- BaoJun Chang
- Department of Biochemistry and Molecular Pathology, Osaka City University Medical School, 1-4-3 Asahimachi, Abeno, Osaka 545-8585, Japan
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Inoue M, Sato E, Nishikawa M, Park AM, Maeda K, Kasahara E. Targeting superoxide dismutase to critical sites of action. Methods Enzymol 2002; 349:346-54. [PMID: 11912926 DOI: 10.1016/s0076-6879(02)49350-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Masayasu Inoue
- Department of Biochemistry and Molecular Pathology, Osaka City University Medical School, Osaka 545-8585, Japan
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17
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Nishikawa M, Nagatomi H, Nishijima M, Ohira G, Chang BJ, Sato E, Inoue M. Targeting superoxide dismutase to renal proximal tubule cells inhibits nephrotoxicity of cisplatin and increases the survival of cancer-bearing mice. Cancer Lett 2001; 171:133-8. [PMID: 11520596 DOI: 10.1016/s0304-3835(01)00591-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Because cis-diamminedichloroplatinum(II) (cisplatin) which generates reactive oxygen species induces renal dysfunction, administration of a large dose for killing cancer cells is highly limited. We recently synthesized a cationic superoxide dismutase (SOD) (hexamethylenediamine-conjugated SOD, AH-SOD) which rapidly accumulates in renal proximal tubule cells and inhibits oxidative injury of the kidney. Treatment of Ehrlich ascites tumor cells (EATC)-bearing mice with cisplatin sufficient for killing tumor cells increased their motality. The motality of cisplatin-treated EATC-bearing mice was markedly decreased by AH-SOD. These results suggest that targeting SOD to renal proximal tubule cells might permit the administration of high doses of cisplatin and related anticancer agents without causing renal injury.
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Affiliation(s)
- M Nishikawa
- Department of Biochemistry, Osaka City University Medical School, 1-4-3 Asahimachi, Abeno-ku, Osaka, Japan.
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Nishikawa M, Nagatomi H, Chang BJ, Sato E, Inoue M. Targeting Superoxide Dismutase to Renal Proximal Tubule Cells Inhibits Mitochondrial Injury and Renal Dysfunction Induced by Cisplatin. Arch Biochem Biophys 2001; 387:78-84. [PMID: 11368186 DOI: 10.1006/abbi.2000.2237] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We recently reported the synthesis of a cationic superoxide dismutase (SOD) derivative (AH-SOD) that rapidly and selectively accumulates in and around proximal tubule cells and effectively dismutes superoxide radicals in situ. The present study revealed that administration of cis-diamminedichloroplatinum(II)-elicited oxidative stress in renal mitochondria, decreased the renal expression of Bcl-x, released cytochrome c from mitochondria to cytosol, and induced apoptosis and renal dysfunction by a mechanism that was inhibited by AH-SOD. These results suggest that targeting SOD to proximal tubule cells protects renal function and permits the administration of fairly high doses of nephrotoxic anticancer agents, such as cisplatin, without causing renal injury.
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Affiliation(s)
- M Nishikawa
- Department of Biochemistry, Osaka City University Medical School, Japan.
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