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Tokgonul S, Ozyilmaz ED, Comoglu T, Gürbüz MM, Doğan Topal B, Kocak FE, Ozakpinar HR. Evaluation of the effect of carvedilol orodispersible tablets on ischemia-reperfusion injury and flap viability in rats: An in vivo study. Arch Pharm (Weinheim) 2024:e2400618. [PMID: 39367562 DOI: 10.1002/ardp.202400618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2024] [Revised: 09/06/2024] [Accepted: 09/09/2024] [Indexed: 10/06/2024]
Abstract
Flap surgery is an integral part of plastic surgery, and ischemia-reperfusion (I/R) injury significantly affects the viability of the flap. Carvedilol (CRV), a nonselective beta-blocker with alpha-1 blocking and antioxidant properties, and known for its potential in reducing I/R damage, was chosen as the active substance for our study. The aim of this study was to investigate the vasodilator and antioxidant effects of CRV on rat inferior epigastric artery skin flap using orally disintegrating tablets (ODTs). The optimized ODT formulation was subjected to in vivo experiments using Sprague-Dawley female rats (n = 24) divided into three groups: Group I (control, I/R), Group II (treatment, I/R + CRV), and Group III (treatment, I/R), I/R + CRV ODT). Reperfusion was then observed following the release of the microclamp from the pedicle, and the flap was then re-adapted to its original position. Control rats were given oral isotonic solution via gavage and were subjected to 8 h of ischemia and 12 h of reperfusion. Group II was given 2 mg/kg CRV oral tablets for 7 days before and after surgery. Group III was given 2 mg/kg/day CRV ODT for the same period. Biopsies were taken from the flap and histopathological and biochemical analyses including superoxide dismutase, glutathionenitric oxide, malondialdehyde, paraoxonase 1, total oxidant, and total antioxidant capacities were performed. This study demonstrates that CRV ODTs significantly increased flap viability by approximately 25% compared to the control group, highlighting their promising therapeutic potential.
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Affiliation(s)
| | - Emine Dilek Ozyilmaz
- Faculty of Pharmacy, Department of Pharmaceutical Technology, Eastern Mediterranean University, Famagusta, North Cyprus, Turkey
| | - Tansel Comoglu
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Ankara University, Ankara, Turkey
| | - Manolya Müjgan Gürbüz
- Institute of Health Sciences, Ankara University, Ankara, Turkey
- Department of Analytical Chemistry, Faculty of Pharmacy, Medipol University, Ankara, Turkey
| | - Burcu Doğan Topal
- Department of Analytical Chemistry, Faculty of Pharmacy, Ankara University, Ankara, Turkey
| | - Fatma Emel Kocak
- Department of Medical Biochemistry, Faculty of Medicine, Kütahya Health Sciences University, Kutahya, Turkey
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Gao M, Zhang Z, Lai K, Deng Y, Zhao C, Lu Z, Geng Q. Puerarin: A protective drug against ischemia-reperfusion injury. Front Pharmacol 2022; 13:927611. [PMID: 36091830 PMCID: PMC9449408 DOI: 10.3389/fphar.2022.927611] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 07/08/2022] [Indexed: 11/25/2022] Open
Abstract
Ischemia-reperfusion (I/R) is a pathological process that occurs in numerous organs throughout the human body and is frequently associated with severe cellular damage and death. Puerarin is an isoflavone compound extracted from the root of Pueraria lobata and has pharmacological effects such as dilating cerebral vessels and anti-free radical generation in cerebral ischemic tissues. With the deepening of experimental research and clinical research on puerarin, it has been found that puerarin has a protective effect on ischemia-reperfusion injury (IRI) of the heart, brain, spinal cord, lung, intestine and other organs. In summary, puerarin has a vast range of pharmacological effects and significant protective effects, and it also has obvious advantages in the clinical protection of patients with organ IRI. With the deepening of experimental pharmacological research and clinical research, it is expected to be an effective drug for IRI treatment. In this review, we summarize the current knowledge of the protective effect of puerarin on I/R organ injury and its possible underlying molecular mechanisms.
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Affiliation(s)
- Minglang Gao
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Ziyao Zhang
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Kai Lai
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yu Deng
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Chuanbing Zhao
- Department of Pancreatic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zilong Lu
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Qing Geng
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
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Yang C, Yang W, He Z, Guo J, Yang X, Wang R, Li H. Kaempferol Alleviates Oxidative Stress and Apoptosis Through Mitochondria-dependent Pathway During Lung Ischemia-Reperfusion Injury. Front Pharmacol 2021; 12:624402. [PMID: 33746757 PMCID: PMC7969663 DOI: 10.3389/fphar.2021.624402] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 01/04/2021] [Indexed: 12/19/2022] Open
Abstract
In previous study, we reported that kaempferol ameliorates significantly lung ischemia-reperfusion injury (LIRI), and may be achieved by targeting the SIRT 1 pathway. This study further explored the anti-LIRI mechanism of kaempferol. In vitro, the rat alveolar epithelial cells L2 was cultured and subjected to anoxia/reoxygenation (A/R) insult. In vivo, SD rats were operated to establish LIRI model. The related indicators of oxidative stress and apoptosis in L2 cells and rats lung tissues were detected. Results showed that kaempferol pre-treatment significantly increased the cell viability, improved mitochondrial membrane potential, inhibited the opening of mitochondrial permeability transition pores, reduced the levels of oxidative stress and apoptosis, increased the expressions of Bcl-2 and mitochondrial cytochrome c, and decreased the expressions of Bax and cytoplasmic cytochrome c in L2 cells after A/R insult. In vivo, kaempferol improved the pathological injury, inhibited the levels of oxidative stress and apoptosis, increased the expressions of Bcl-2 and mitochondrial cytochrome c, and decreased the expressions of Bax and cytoplasmic cytochrome c in rats lung tissues after I/R. However, the aforementioned effects of kaempferol were significantly attenuated by the SIRT 1 inhibitor EX527 or the PGC-1α inhibitor SR-18292. What's more, SR-18292 has not reversed the effect of kaempferol on increasing the protein activity of SIRT 1. Above results suggest that kaempferol ameliorates LIRI by improving mitochondrial function, reducing oxidative stress and inhibiting cell apoptosis. Its molecular mechanism of action includes the SIRT 1/PGC-1α/mitochondria signaling pathway.
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Affiliation(s)
- Chunli Yang
- Department of Intensive Care, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China
| | - Wenkai Yang
- Department of Cardiovascular Surgery, Central People's Hospital of Zhanjiang, Zhanjiang, China
| | - Zhaohui He
- Department of Intensive Care, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China
| | - Jinghua Guo
- Department of Intensive Care, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China
| | - Xiaogang Yang
- Department of Intensive Care, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China
| | - Rongsheng Wang
- Department of Intensive Care, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China
| | - Hongbo Li
- Department of Orthopedics, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China
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Yang C, Yang W, He Z, He H, Yang X, Lu Y, Li H. Kaempferol Improves Lung Ischemia-Reperfusion Injury via Antiinflammation and Antioxidative Stress Regulated by SIRT1/HMGB1/NF-κB Axis. Front Pharmacol 2020; 10:1635. [PMID: 32116668 PMCID: PMC7025570 DOI: 10.3389/fphar.2019.01635] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 12/16/2019] [Indexed: 12/24/2022] Open
Abstract
Trauma, organ transplantation, and thromboembolism are the main causes of lung ischemia-reperfusion injury (LIRI), and new therapies and drugs are urgent to relieve LIRI. In preliminary experiment, authors found that kaempferol could improve LIRI in rats, and the current study further explored its possible mechanism. The model of rat LIRI was established and appropriate research methods were implemented. Results shown that kaempferol could significantly improve LIRI, inhibit release of inflammatory factors including interleukin (IL) 6 and tumor necrosis factor (TNF) α in bronchoalveolar lavage fluid, and reduce oxidative stress reaction. Western blotting was used to detect protein expression levels and found that kaempferol could up-regulate the protein expressions of phosphorylated (p-) p65 and p65, and down-regulate the protein expression of sirtuin (SIRT) 1. Immunofluorescence was used to localize the expression of high mobility group box (HMGB) 1 and found its higher expression in outside of nucleus. However, the above effects of kaempferol on LIRI markedly attenuated by EX 527, a selective inhibitor of SIRT 1. Taken together, we first reported the protective effect of kaempferol on rat LIRI and confirmed that kaempferol’s antiinflammation and antioxidative stress involving the SIRT1/HMGB1/NF-κB axis.
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Affiliation(s)
- Chunli Yang
- Department of Intensive Care, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China
| | - Wenkai Yang
- Department of Cardiovascular Surgery, Affiliated Central People's Hospital of Zhanjiang of Guangdong Medical University, Zhanjiang, China
| | - Zhaohui He
- Department of Intensive Care, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China
| | - Huiwei He
- Department of Intensive Care, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China
| | - Xiaogang Yang
- Department of Intensive Care, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China
| | - Yuanhua Lu
- Department of Intensive Care, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China
| | - Hongbo Li
- Department of Intensive Care, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China
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Miranda CTCBCD, Fagundes DJ, Miranda ED, Simões RS, Taha MO. The role of ischemic preconditioning in gene expression related to inflammation in a rat model of intestinal ischemia-reperfusion injury. Acta Cir Bras 2019; 33:1095-1102. [PMID: 30624515 DOI: 10.1590/s0102-865020180120000007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 11/08/2018] [Indexed: 12/11/2022] Open
Abstract
PURPOSE To investigate the gene expression related to inflammation on mice subjected to intestinal ischemia and reperfusion (I/R) and treated with ischemic preconditioning (IPC). METHODS Thirty rats (EPM-Wistar), distributed in five groups of six animals each, were underwent anesthesia and laparotomy. The ischemia time was standardized in 60 minutes and the reperfusion time 120 minutes. IPC was standardized in 5 minutes of ischemia followed by 10 minutes of reperfusion accomplished before I/R. The control group was submitted only to anesthesia and laparotomy. The other groups were submitted to ischemia, I/R, ischemia + IPC and I/R + IPC. It was collected a small intestine sample to analyses by Quantitative Polymerase Chain Reaction in real Time (RT-qPCR) and histological analyses. It was studied 27 genes. RESULTS The groups that received IPC presented downregulation of genes, observed in of genes in IPC+ischemia group and IPC+I/R group. Data analysis by clusters showed upregulation in I/R group, however in IPC groups occurred downregulation of genes related to inflammation. CONCLUSION The ischemia/reperfusion promoted upregulation of genes related to inflammation, while ischemic preconditioning promoted downregulation of these genes.
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Affiliation(s)
| | - Djalma José Fagundes
- PhD, Full Professor, Division of Surgical Techniques and Experimental Surgery, Department of Surgery, Universidade Federal de São Paulo (UNIFESP), Brazil. Manuscript preparation and writing
| | - Edinaldo de Miranda
- PhD, Assistant Professor, Medical School, UESPI, Teresina-PI, Brazil. Acquisition of data, manuscript preparation and writing
| | - Ricardo Santos Simões
- PhD, Department of Morphology and Genetic, UNIFESP, Sao Paulo-SP, Brazil. Manuscript preparation and writing
| | - Murched Omar Taha
- PhD, Associated Professor, Surgical Technique and Experimental Surgery, UNIFESP, Sao Paulo-SP, Brazil. Manuscript preparation, final approval
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Jin X, Wang L, Li L, Zhao X. Protective effect of remote ischemic pre-conditioning on patients undergoing cardiac bypass valve replacement surgery: A randomized controlled trial. Exp Ther Med 2019; 17:2099-2106. [PMID: 30867697 PMCID: PMC6396008 DOI: 10.3892/etm.2019.7192] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 12/28/2018] [Indexed: 12/18/2022] Open
Abstract
Remote ischemic pre-conditioning (RIPC) may have a protective effect on myocardial injury associated with cardiac bypass surgery (CPB). The objective of the present study was to investigate the effect of RIPC on ischemia/reperfusion (I/R) injury and to assess the underlying mechanisms. A total of 241 patients who underwent valve replacement were randomly assigned to receive either RIPC (n=121) or control group (n=120). The primary endpoint was peri-operative myocardial injury (PMI), which was determined by serum Highly sensitive cardiac troponin T (hsTnT). The secondary endpoint was the blood gas indexes, acute lung injury and length of intensive care unit stay, length of hospital stay and major adverse cardiovascular events. The results indicated that in comparison with control group, RIPC treatment reduced the levels of hsTnT at 6 and 24 h post-CPB (P<0.001), as well as the alveolar-arterial oxygen pressure difference and respiratory index after CPB. Furthermore, RIPC reduced the incidence of acute lung injury by 15.3% (54.1% in the control group vs. 41.3% in the RIPC group, P=0.053). It was indicated that RIPC provided myocardial and pulmonary protection during CPB. In addition, the length of the intensive care unit and hospital stay was reduced by RIPC. Mechanistic investigation revealed a reduced content of soluble intercellular adhesion molecule-1, endothelin-1 and malondialdehyde, as well as elevated levels of nitric oxide in the RIPC group compared with those in the control group. This indicated that RIPC protected against I/R injury associated with CPB through reducing the inflammatory response and oxidative damage, as well as improving pulmonary vascular tension. In conclusion, RIPC reduced myocardial and pulmonary injury associated with CPB. This protective effect may be associated with the inhibition of the inflammatory response and oxidative injury. The present study proved the efficiency of this approach in reducing ischemia/reperfusion injury associated with cardiac surgery. Clinical trial registry no. ChiCTR1800015393.
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Affiliation(s)
- Xiuling Jin
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Liangrong Wang
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Liling Li
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Xiyue Zhao
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
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Taha MO, Silva TDMAE, Ota KS, Vilela WJ, Simões RS, Starzewski Junior A, Fagundes DJ. The role of atenolol in the modulation of the expression of genes encoding pro- (caspase-1) and anti- (Bcl2L1) apoptotic proteins in endothelial cells exposed to intestinal ischemia and reperfusion in rats. Acta Cir Bras 2019; 33:1061-1066. [PMID: 30624511 DOI: 10.1590/s0102-865020180120000003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Accepted: 11/23/2018] [Indexed: 11/22/2022] Open
Abstract
PURPOSE To investigate the role of atenolol in the gene expression of caspase 1 (Casp1) and Bcl2L1 on vascular endothelium of rat intestine after ischemia and reperfusion (IR). METHODS Eighteen adult male Wistar rats were randomly divided into 3 groups (n=6): SG (Sham group): no clamping of the superior mesenteric artery; IRG: IR plus saline group: IRG+At: IR plus Atenolol group. Rats from IRG and IRG+At were subjected to 60 min of intestinal ischemia and 120 min of reperfusion. Atenolol (2mg/kg) or saline were injected in the femoral vein 5 min before ischemia, 5 min and 55 min after reperfusion. Thereafter, intestinal segments were appropriately removed and processed for Endothelial Cell Biology Rat RT2 Profiler PCR Array. RESULTS the anti-apoptotic Bcl2L1 gene expression was significantly down-regulated (-1.10) in the IRG and significantly up-regulated in the IRG+At (+14.15). Meanwhile, despite Casp1 gene expression was upregulated in both groups, it was significantly higher in the IRG (+35.06) than the IRG+At (+6.68). CONCLUSIONS Atenolol presents antiapoptotic effects on rat intestine subjected to IR partly by the up-regulation of the anti-apoptotic Bcl2L1 gene expression. Moreover, atenolol can mitigate the pro-apoptotic and pro-inflammatory effects of Casp1 gene on rat intestine after IR.
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Affiliation(s)
- Murched Omar Taha
- PhD, Associated Professor, Surgical Technique and Experimental Surgery, Universidade Federal de São Paulo (UNIFESP), Brazil. Conception and design of the study, critical revision, final approval
| | - Thaís de Melo Alexandre E Silva
- Graduate student, Medical School, Universidade Anhembi Morumbi, Sao Paulo-SP, Brazil. Acquisition of data, technical procedures, manuscript preparation
| | - Keimy Saori Ota
- Graduate student, Medical School, Universidade Anhembi Morumbi, Sao Paulo-SP, Brazil. Acquisition of data, technical procedures, manuscript preparation
| | - Wander Junqueira Vilela
- Graduate student, Medical School, Universidade Anhembi Morumbi, Sao Paulo-SP, Brazil. Acquisition of data, technical procedures, manuscript preparation
| | - Ricardo Santos Simões
- PhD, Department of Morphology and Genetic, UNIFESP, Sao Paulo-SP, Brazil. Analysis of data, manuscript preparation and writing
| | - Alberto Starzewski Junior
- MD, Assistant Professor, Medical School, Universidade Anhembi Morumbi, Sao Paulo-SP, Brazil. Conception of the study, critical revision
| | - Djalma José Fagundes
- PhD, Full Professor, Division of Surgical Techniques and Experimental Surgery, Department of Surgery, UNIFESP, Sao Paulo-SP, Brazil. Conception and design of the study, critical revision, final approval
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Diazoxide reduces local and remote organ damage in a rat model of intestinal ischemia reperfusion. J Surg Res 2018; 225:118-124. [PMID: 29605021 DOI: 10.1016/j.jss.2018.01.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 10/18/2017] [Accepted: 01/03/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND Intestinal ischemia reperfusion is a common clinical condition that causes functional impairment. Once tight junctions are damaged, barrier function is compromised, and the intestines become a source for entry of bacterial and inflammatory mediators into the circulation, leading to systemic inflammatory response syndrome, multiple organ failure, and death. It is possible that diazoxide could protect the intestines against ischemia reperfusion. The aim of this study is to determine whether diazoxide can provide protection in a rat model of intestinal ischemia reperfusion. METHODS A total of 32 adult male specific pathogen-free Wistar rats were randomized into three groups: a control group, n = 6; a saline group, n = 13; and a diazoxide group, n = 13. The saline and diazoxide groups underwent clamping of the superior mesenteric artery for 1 h, with samples in all the groups being collected 12 h later. RESULTS Intestinal histology showed greater damage in the intestinal ischemia reperfusion groups. mRNA expression of zonula occludens-1 and occludin (tight junction proteins) and interleukin-6 and cyclooxygenase-2 was the highest in the Saline group. The Diazoxide group showed a reduction in aspartate aminotransferase serum levels compared with the other groups. CONCLUSIONS Increased expression of zonula occludens-1, occludin, and cyclooxygenase-2 suggested a greater regenerative effort because of more severe lesions in the saline group. In addition, increased expression of interleukin-6 in the saline group was suggestive of inflammation, indicating that diazoxide had protective effects in the diazoxide group. Reduced aspartate aminotransferase in the diazoxide group suggested liver protection. Diazoxide protects the intestines and liver from intestinal ischemia reperfusion lesions in rats.
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Öztürk T, Vural K, Tuğlu İ, Var A, Kurdal T, Aydemir I. Acute and Chronic Pretreatment With Atenolol Attenuates Intestinal Ischemia and Reperfusion Injury in Hypercholesterolemic Rats. J Cardiothorac Vasc Anesth 2016; 30:985-92. [PMID: 27521968 DOI: 10.1053/j.jvca.2016.03.140] [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] [Received: 11/24/2015] [Indexed: 01/19/2023]
Abstract
OBJECTIVE To evaluate the protective effects of preinjury atenolol (acute v chronic) on apoptosis, contractility, oxidative stress, and inflammatory markers in hypercholesterolemic rats undergoing intestinal ischemia-reperfusion (I/R) injury. DESIGN Prospective, experimental animal study. SETTING University laboratory. PARTICIPANTS Male Wistar rats (n = 32). INTERVENTIONS Rats were divided into the following 4 groups: 1 group was fed a normal diet (ND) (group ND+NoAT [no atenolol]), and the other 3 groups were fed a high-cholesterol diet (HCD)-group HCD+NoAT, group HCD+ChAT (chronic atenolol, 3 mg/kg/day for 8 weeks), and group HCD+AcAT (acute atenolol, 1.5 mg/kg, given 5 minutes before intestinal clamping). All rats underwent I/R injury. The superior mesenteric artery was clamped for 60 minutes, then opened for 120 minutes (reperfusion). Apoptotic cells and stimulated contractions of ileal segments were examined. Tissue markers of intestinal I/R injury were examined. Intestinal malondialdehyde, superoxide dismutase, and nitrate/nitrite levels were measured. MEASUREMENTS AND MAIN RESULTS The chronic atenolol group had fewer apoptotic cells and higher superoxide dismutase activity compared with the other groups. Intestinal contraction was higher in both atenolol pretreatment groups compared with the NoAT groups. Chronic and acute atenolol resulted in lower ileal levels of malondialdehyde and immunolabeling-positive cells (intestinal inducible nitric oxide synthase, endothelial nitric oxide synthase, interleukin-1, and interleukin-8) after I/R injury compared with the no atenolol groups. CONCLUSIONS Both chronic and acute pre-I/R injury treatment with atenolol attenuated I/R injury in this hypercholesterolemic rat model. These findings should encourage future studies of atenolol in hypercholesterolemic patients undergoing procedures with a high risk of intestinal ischemia.
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Affiliation(s)
- Tülün Öztürk
- Departments of Anaesthesiology and Reanimation, Celal Bayar University, Faculty of Medicine, Uncubozköy, Manisa, Turkey.
| | - Kamil Vural
- Pharmacology, Celal Bayar University, Faculty of Medicine, Uncubozköy, Manisa, Turkey
| | - İbrahim Tuğlu
- Histology, Celal Bayar University, Faculty of Medicine, Uncubozköy, Manisa, Turkey
| | - Ahmet Var
- Biochemistry, Celal Bayar University, Faculty of Medicine, Uncubozköy, Manisa, Turkey
| | - Taner Kurdal
- Cardiovascular Surgery, Celal Bayar University, Faculty of Medicine, Uncubozköy, Manisa, Turkey
| | - Işıl Aydemir
- Pharmacology, Celal Bayar University, Faculty of Medicine, Uncubozköy, Manisa, Turkey; Histology, Celal Bayar University, Faculty of Medicine, Uncubozköy, Manisa, Turkey
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Oxidative Stress and Lung Ischemia-Reperfusion Injury. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:590987. [PMID: 26161240 PMCID: PMC4487720 DOI: 10.1155/2015/590987] [Citation(s) in RCA: 177] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2014] [Revised: 01/19/2015] [Accepted: 01/20/2015] [Indexed: 01/04/2023]
Abstract
Ischemia-reperfusion (IR) injury is directly related to the formation of reactive oxygen species (ROS), endothelial cell injury, increased vascular permeability, and the activation of neutrophils and platelets, cytokines, and the complement system. Several studies have confirmed the destructiveness of the toxic oxygen metabolites produced and their role in the pathophysiology of different processes, such as oxygen poisoning, inflammation, and ischemic injury. Due to the different degrees of tissue damage resulting from the process of ischemia and subsequent reperfusion, several studies in animal models have focused on the prevention of IR injury and methods of lung protection. Lung IR injury has clinical relevance in the setting of lung transplantation and cardiopulmonary bypass, for which the consequences of IR injury may be devastating in critically ill patients.
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