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Tuncay A, Sivgin V, Ozdemirkan A, Sezen SC, Boyunaga H, Kucuk A, Gunes I, Arslan M. The Effect of Cerium Oxide on Lung Tissue in Lower Extremity Ischemia Reperfusion Injury in Sevoflurane Administered Rats. Int J Nanomedicine 2020; 15:7481-7489. [PMID: 33116483 PMCID: PMC7547779 DOI: 10.2147/ijn.s263001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 08/21/2020] [Indexed: 11/23/2022] Open
Abstract
Introduction We aimed to investigate the effects of cerium oxide, applied before the sevoflurane anesthesia, on lung tissue in rats with lower extremity ischemia-reperfusion (IR). Materials and Methods A total of 30 rats were randomly divided into five groups as; control (C), IR, cerium oxide-IR (CO-IR), IR-sevoflurane (IRS), and cerium oxide-IR-sevoflurane (CO-IRS). In the CO-IR group, 30 minutes after the injection of cerium oxide (0.5 mg/kg, intraperitoneal (i.p)), an atraumatic microvascular clamp was placed on the infrarenal abdominal aorta for 120 minutes. Then, the clamp was removed and reperfused for 120 minutes. Sevoflurane was applied in 100% oxygen at a rate of 2.3% at 4 L/min during IR. The blood samples were taken for biochemical analysis and the lung tissue samples were taken for histological analysis. Results Neutrophil infiltration/aggregation was significantly higher in the IR group than in the C and CO-IRS groups. The alveolar wall thickness and total lung injury scores were significantly higher in the IR group than in the C, IRS, CO-IR and CO-IRS groups. Discussion We determined that the administration of 0.5 mg/kg dose of cerium oxide with sevoflurane reduces the oxidative stress and corrects IR-related damage in lung tissue. Our results show that the administration of cerium oxide before IR and the administration of sevoflurane during IR have a protective effect in rats.
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Affiliation(s)
- Aydin Tuncay
- Faculty of Medicine, Department of Cardiovascular Surgery, Erciyes University, Kayseri, Turkey
| | - Volkan Sivgin
- Faculty of Medicine, Department of Anesthesiology and Reamination, Gazi University, Ankara, Turkey
| | - Aycan Ozdemirkan
- Faculty of Medicine, Department of Anesthesiology and Reamination, Gazi University, Ankara, Turkey
| | - Saban Cem Sezen
- Faculty of Medicine, Department of Histology and Embryology, Kırıkkale University, Kırıkkale, Turkey
| | - Hakan Boyunaga
- Faculty of Medicine, Department of Medical Biochemistry, Kırıkkale University, Kırıkkale, Turkey
| | - Aysegul Kucuk
- Faculty of Medicine, Department of Physiology, Kütahya Health Science University, Kütahya, Turkey
| | - Isin Gunes
- Faculty of Medicine, Department of Anesthesiology and Reamination, Erciyes University, Kayseri, Turkey
| | - Mustafa Arslan
- Faculty of Medicine, Department of Anesthesiology and Reamination, Gazi University, Ankara, Turkey
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Chen H, Man RYK, Leung SWS. PPAR-α agonists acutely inhibit Ca 2+-independent PLA 2 to reduce H 2O 2-induced contractions in aortae of spontaneously hypertensive rats. Am J Physiol Heart Circ Physiol 2017; 314:H681-H691. [PMID: 29127234 DOI: 10.1152/ajpheart.00314.2017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Hypertension is associated with endothelial dysfunction, which favors the release of endothelium-derived contracting factors, including vasoconstrictor prostanoids and reactive oxygen species. Peroxisome proliferator-activated receptor-α (PPAR-α) agonists, clinically used as lipid-lowering drugs, possess antioxidant properties and exert beneficial effects in the vascular system. The present study aimed to identify the mechanism(s) underlying the acute effects of the PPAR-α agonists Wy14643 and fenofibate on endothelium-dependent contractions, in particular those related to oxidative stress, in the aorta of the spontaneously hypertensive rat (SHR). Aortic rings with and without endothelium of male SHRs and normotensive Wistar-Kyoto rats were suspended in organ chambers for isometric tension measurements and homogenized for enzyme activity assays. Contractions to acetylcholine in quiescent SHR aortae with endothelium were reduced by tiron (superoxide anion scavenger), diethyldithiocarbamic acid (superoxide dismutase inhibitor), and acute treatment with either Wy14643 or fenofibrate. Similarly to contractions evoked by acetylcholine, H2O2-induced increases in tension in SHR aortae involved, in succession, phospholipase A2 (PLA2), cyclooxygenase, and thromboxane-prostanoid receptors. Wy14643 or fenofibrate, by decreasing the activity of endothelial Ca2+-independent PLA2, attenuated the contractions to H2O2. In conclusion, the increased oxidative stress in the SHR aorta (mainly increased production of H2O2 and its partially reduced product, hydroxyl radical) contributed to acetylcholine-induced, endothelium-dependent contractions; PPAR-α agonists likely inhibit the H2O2-mediated contractions by inhibiting endothelial Ca2+-independent PLA2. The present study highlights the prospective therapeutic effects of PPAR-α agonists in improving endothelial function in hypertension and other vascular implications due to oxidative stress. NEW & NOTEWORTHY Peroxisome proliferator-activated receptor-α agonists, which are used clinically as lipid-lowering drugs, acutely reduce H2O2-induced contractions in aortae of hypertensive rats by inhibiting the activity of endothelial Ca2+-independent phospholipase A2. These vascular effects of peroxisome proliferator-activated receptor-α agonists suggest that they may help to prevent vascular complications under pathological conditions associated with oxidative stress.
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Affiliation(s)
- Hui Chen
- Department of Pharmacology and Pharmacy, University of Hong Kong, Hong Kong, China
| | - Ricky Y K Man
- Department of Pharmacology and Pharmacy, University of Hong Kong, Hong Kong, China
| | - Susan W S Leung
- Department of Pharmacology and Pharmacy, University of Hong Kong, Hong Kong, China
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Kattaia AAA, Abd El-Baset SA, Mohamed EM, Abdul-Maksou RS, Elfakharany YM. Molecular mechanisms underlying histological and biochemical changes induced by nitrate in rat liver and the efficacy of S-Allylcysteine. Ultrastruct Pathol 2016; 41:10-22. [DOI: 10.1080/01913123.2016.1252821] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Asmaa A. A. Kattaia
- Department of Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Samia A. Abd El-Baset
- Department of Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Eman M. Mohamed
- Department of Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | | | - Yara M. Elfakharany
- Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
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Pirinixic acids: flexible fatty acid mimetics with various biological activities. Future Med Chem 2015; 7:1597-616. [DOI: 10.4155/fmc.15.87] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Pirinixic acid is a typical fatty acid mimetic and was developed as synthetic antihyperlipidemic agent. While its target remained unknown in the early development, it has later been characterized as dual PPARα/γ agonist. Based on this activity, pirinixic acid has served as a lead compound for several structure–activity relationship (SAR) studies addressing diverse targets for lipid mimetics. Many structural variants of pirinixic acid descendants have been developed and thereby potent agents on metabolic, inflammatory and neuroprotective targets were discovered of which some have proven in vivo efficacy. This article reviews pirinixic acid descendants along with their in vitro-pharmacological profiles, summarizes their in vivo data and finally gives a future perspective for this valuable class of fatty acid mimetics.
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Suyavaran A, Ramamurthy C, Mareeswaran R, Subastri A, Lokeswara Rao P, Thirunavukkarasu C. TNF-α suppression by glutathione preconditioning attenuates hepatic ischemia reperfusion injury in young and aged rats. Inflamm Res 2014; 64:71-81. [PMID: 25420731 DOI: 10.1007/s00011-014-0785-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 11/07/2014] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND AND AIM Hepatic ischemia reperfusion (I/R) stimulates Kupffer cells and initiates injury through tumor necrosis factor-α (TNF-α) upregulation. Aim of this study was to compare the variable effects of reduced glutathione (GSH) pre-treatment on I/R liver injury in young and aged rats. METHODS Wistar male rats were sorted into young (groups I-III) and aged (groups IV-VI). All groups except sham (groups I and IV) were subjected to 90-min ischemia and 2-h reperfusion. The treatment groups received 200 mg/kg bwt (groups III and VI) of GSH, 30 min prior to I/R. Variable effects of GSH were studied by transaminase activities, thiobarbituric acid-reactive substances (TBARS), GSH level, GSH/oxidized GSH (GSSG) ratio, TNF-α level, apoptotic markers and confirmed by histopathological observations. RESULTS Our findings revealed that I/R inflicted more liver damage in aged rats than young rats. The GSH treatment prior to surgery significantly lowered the serum transaminase activities, hepatic TBARS level and effectively restored the GSH/GSSG ratio in both young and aged rats more remarkably in the mitochondria. Western analysis depicted that the GSH treatment effectively suppressed TNF-α expression and apoptotic markers in both young and aged rats. These findings were further confirmed by terminal deoxynucleotide transferase dUTP nick end labeling assay and histopathological observations of liver sections of young and aged rats. CONCLUSION Restoration of GSH/GSSG ratio through GSH pre-conditioning inhibits TNF-α and apoptosis in hepatic I/R injury. Hence, GSH pre-conditioning may be utilized in both young and aged individuals during liver transplantation/surgery for better post-operative outcomes.
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Affiliation(s)
- Arumugam Suyavaran
- Department of Biochemistry and Molecular Biology, Pondicherry University, Puducherry, 605014, India
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Peralta C, Jiménez-Castro MB, Gracia-Sancho J. Hepatic ischemia and reperfusion injury: effects on the liver sinusoidal milieu. J Hepatol 2013; 59:1094-106. [PMID: 23811302 DOI: 10.1016/j.jhep.2013.06.017] [Citation(s) in RCA: 401] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 06/17/2013] [Accepted: 06/18/2013] [Indexed: 12/16/2022]
Abstract
Ischemia-reperfusion injury is an important cause of liver damage occurring during surgical procedures including hepatic resection and liver transplantation, and represents the main underlying cause of graft dysfunction post-transplantation. Cellular and biochemical processes occurring during hepatic ischemia-reperfusion are diverse and complex, and include the deregulation of the healthy phenotype of all liver cellular components. Nevertheless, a significant part of these processes are still unknown or unclear. The present review aims at summarizing the current knowledge in liver ischemia-reperfusion, but specifically focusing on liver cell phenotype and paracrine interaction deregulations. Moreover, the most updated therapeutic strategies including pharmacological, genetic and surgical interventions, as well as some of the scientific controversies in the field will be described. Finally, the importance of considering the subclinical situation of liver grafts when translating basic knowledge to the bedside is discussed.
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Affiliation(s)
- Carmen Peralta
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red en Enfermedades Hepáticas y Digestivas (CIBEREHD), Barcelona, Spain
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Tang WX, Wang LK, Wang YQ, Zong ZJ, Gao ZX, Liu XS, Shen YJ, Shen YX, Li YH. Peroxisome proliferator-activated receptor-α activation protects against endoplasmic reticulum stress-induced HepG2 cell apoptosis. Mol Cell Biochem 2013; 385:179-90. [DOI: 10.1007/s11010-013-1826-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2013] [Accepted: 09/13/2013] [Indexed: 12/24/2022]
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Antioxidant Stress and Anti-Inflammation of PPARα on Warm Hepatic Ischemia-Reperfusion Injury. PPAR Res 2012; 2012:738785. [PMID: 23213319 PMCID: PMC3503442 DOI: 10.1155/2012/738785] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 09/27/2012] [Accepted: 10/10/2012] [Indexed: 02/07/2023] Open
Abstract
Hepatic ischemia-reperfusion (IR) injury is a serious clinical problem. Minimizing the adverse effect of ischemia-reperfusion injury after liver surgery or trauma is an urgent need. It has been proved that besides the effect of regulating the lipid and lipoprotein metabolism, PPARα also undertakes the task of organ protection. In this paper, related literature has been summarized and we come to the conclusion that administration of PPARα agonists can strengthen the antioxidant and anti-inflammation defense system by the upregulation of the expression of antioxidant enzymes and inhibition of NF-κB activity. This may provide a potential clinical treatment for hepatic ischemia-reperfusion injury.
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The Current Knowledge of the Role of PPAR in Hepatic Ischemia-Reperfusion Injury. PPAR Res 2012; 2012:802384. [PMID: 22675337 PMCID: PMC3363006 DOI: 10.1155/2012/802384] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2011] [Accepted: 03/16/2012] [Indexed: 12/15/2022] Open
Abstract
Strategies to improve the viability of steatotic livers could reduce the risk of dysfunction after surgery and increase the number of organs suitable for transplantation. Peroxisome proliferator-activated receptors (PPARs) are major regulators of lipid metabolism and inflammation. In this paper, we review the PPAR signaling pathways and present some of their lesser-known functions in liver regeneration. Potential therapies based on PPAR regulation will be discussed. The data suggest that further investigations are required to elucidate whether PPAR could be a potential therapeutic target in liver surgery and to determine the most effective therapies that selectively regulate PPAR with minor side effects.
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Protective Effects of Peroxisome Proliferator-Activated Receptor-α Agonist, Wy14643, on Hypoxia/Reoxygenation Injury in Primary Rat Hepatocytes. PPAR Res 2011; 2012:547980. [PMID: 22007188 PMCID: PMC3191773 DOI: 10.1155/2012/547980] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2011] [Accepted: 08/12/2011] [Indexed: 11/18/2022] Open
Abstract
This study investigates the effects and possible mechanism of an agonist of PPARα, Wy14643, on primary hepatocytes subjected to H/R injury in rats. H/R induced a significant increase ALT, AST, MDA in the culture medium and ROS in the hepatocytes. These effects were reversed by pretreatment with Wy14643 in the dose-dependent manner. The activity of SOD and the level of GSH in the hepatocytes were decreased after H/R, which were increased by Wy14643 pretreatment. Moreover, the mRNA expressions of PPARα significantly increased in H/R+Wy14643 groups when compared with that in H/R group. A PPARα agonist, Wy14643, exerts significant protective effect against H/R injury in primary hepatocytes via PPARα activation and attenuating oxidative stress.
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Boshra V, Moustafa AM. Effect of preischemic treatment with fenofibrate, a peroxisome proliferator-activated receptor-α ligand, on hepatic ischemia-reperfusion injury in rats. J Mol Histol 2011; 42:113-22. [PMID: 21305343 DOI: 10.1007/s10735-011-9313-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2010] [Accepted: 01/19/2011] [Indexed: 12/24/2022]
Abstract
Liver ischemia/reperfusion (I/R) injury is a serious clinical problem. The reactive oxygen species (ROS) and tumor necrosis factor alpha (TNF-α) are important mediators in liver I/R injury. This study was designed to investigate the effect of preischemic treatment with fenofibrate (Peroxisome proliferator-activated receptor- α agonist) on the oxidative stress and inflammatory response to hepatic I/R injury in rats. Hepatic I/R was induced by clamping the blood supply of the left lateral and median lobes of the liver for 60 min, followed by reperfusion for 4 h. Each animal group was pretreated with a single dose of fenofibrate (50 mg/kg body weight) intraperitoneally 1 h before ischemia. At the end of reperfusion, blood samples and liver tissues were obtained to assess serum alanine aminotransferase (ALT), TNF-α, hepatic malondialdehyde (MDA) and superoxide dismutase activity (SOD). Liver specimens were obtained and processed for light and electron microscopic study. Hepatic I/R induced a significant elevation of serum ALT and TNF-α with significant elevation of hepatic MDA and reduction of SOD activity. Histopathological examination revealed hepatic inflammation, necrosis and apoptosis. Preischemic treatment with fenofibrate at a dose of 50 mg/kg significantly attenuated the biochemical and structural alterations of I/R-induced liver injury.
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Affiliation(s)
- Vivian Boshra
- Department of Clinical Pharmacology, Faculty of Medicine, Mansoura University, Mansoura, Egypt.
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