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Jin LM, Liu YX, Cheng J, Zhou L, Xie HY, Feng XW, Li H, Shen Y, Xu X, Zheng SS. The effect of SphK1/S1P signaling pathway on hepatic sinus microcirculation in rats with hepatic ischemia-reperfusion injury. Hepatobiliary Pancreat Dis Int 2022; 21:94-98. [PMID: 34233851 DOI: 10.1016/j.hbpd.2021.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 06/18/2021] [Indexed: 02/05/2023]
Affiliation(s)
- Li-Ming Jin
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Hangzhou 310003, China; Department of General Surgery, Hepatobiliary and Pancreatic Surgery and Minimally Invasive Surgery, Zhejiang Provincial People's Hospital, Affiliated People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Yuan-Xing Liu
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Hangzhou 310003, China
| | - Jian Cheng
- Department of General Surgery, Hepatobiliary and Pancreatic Surgery and Minimally Invasive Surgery, Zhejiang Provincial People's Hospital, Affiliated People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Lin Zhou
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Hangzhou 310003, China
| | - Hai-Yang Xie
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Hangzhou 310003, China
| | - Xiao-Wen Feng
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Hangzhou 310003, China
| | - Hui Li
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Hangzhou 310003, China
| | - Yan Shen
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Hangzhou 310003, China
| | - Xiao Xu
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Hangzhou 310003, China
| | - Shu-Sen Zheng
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; NHC Key Laboratory of Combined Multi-organ Transplantation, Hangzhou 310003, China.
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Ibrahim MA, Abdelzaher WY, Ibrahim YF, Ahmed AF, Welson NN, Al-Rashed S, Batiha GES, Abdel-Aziz AM. Diacerein protects rats with liver ischemia/reperfusion damage: Down-regulation of TLR4/ NFκ-B signaling pathway. Biomed Pharmacother 2020; 134:111063. [PMID: 33348310 DOI: 10.1016/j.biopha.2020.111063] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 11/17/2020] [Accepted: 11/20/2020] [Indexed: 12/20/2022] Open
Abstract
PURPOSE Liver ischemia-reperfusion (I/R) injury is an inescapable problem. Diacerein, a chondro-protective drug, has antioxidant and anti-inflammatory effects. Its effect on liver I/R injury has not yet been fully clarified. Therefore, the current study aimed to detect its hepatic protective effect with the explanation of possible underlying mechanisms. METHODS Adult male albino rats were assigned to 4 groups: sham group, diacerein pretreated sham group, I/R non-treated group, and I/R diacerein pretreated group. Serum liver enzymes, hepatic tissue oxidative stress parameters, inflammatory biomarkers mainly Toll-like receptors-4 (TLR4), and liver fatty acid binding protein (L-FABP) levels were determined. Histopathological examination of liver tissues and immunohistochemical studies of heat shock protein 70, nuclear factor-kappa B, and Cluster of Differentiation 68 were also done. RESULTS Diacerein pretreatment has the ability to restore the hepatic I/R damaging effect, proved by the reduction of serum liver enzymes, the decrease of the oxidative stress and hepatic inflammation via down-regulation of TLR4/ NFκ-B signaling pathway together with the restoration of L-FABP level and improvement of the histopathological and immunohistochemical study findings in the hepatic tissue. CONCLUSION These results suggested the hepatoprotective effect of diacerein relies on its antioxidant and anti-inflammatory effects reducing TLR4/ NFκ-B signaling pathway.
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Affiliation(s)
| | | | - Yasmine F Ibrahim
- Department of Pharmacology, Faculty of Medicine, Minia University, Minia, Egypt.
| | - Amira F Ahmed
- Department of Histology and Cell Biology, Faculty of Medicine, Minia University, Minia, Egypt; Department of Histology and Cell Biology, Misr University for Science and Technology, Egypt.
| | - Nermeen N Welson
- Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Beni-Suef University, Beni-Suef, 62511, Egypt.
| | - Sarah Al-Rashed
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, AlBeheira, Egypt.
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Xiong C, Du Z, Zhu Y, Xue M, Jiang Y, Zhong Y, Jiang L, Chen H, Shi M. Mycophenolate mofetil preconditioning protects mouse liver against ischemia/reperfusion injury in wild type and toll-like receptor 4 knockout mice. Transpl Immunol 2020; 65:101357. [PMID: 33279598 DOI: 10.1016/j.trim.2020.101357] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 11/28/2020] [Accepted: 11/28/2020] [Indexed: 11/18/2022]
Abstract
BACKGROUND Mycophenolate mofetil (MMF), an immunosuppressive drug, exerts anti-inflammatory effects on organs during ischemia/reperfusion (I/R) injury. However, the exact function of MMF in hepatic I/R injury remains largely unknown. The purpose of this study was to explore the role and potential mechanism of MMF protection in hepatic I/R injury. METHODS Male wild type (WT) and TLR4 knockout (KO) mice were injected intraperitoneally with MMF or normal saline. Animals underwent 90 min of partial hepatic ischemia, followed by 1, 6, or 24 h of reperfusion. Hepatic histology, serum amiotransferase, inflammatory cytokines, hepatocyte apoptosis, and hepatocyte autophagy were examined to assess liver injury. RESULTS Treatment with MMF significantly decreased hepatic I/R injury as indicated by a reduction in serum aminotransferase levels, Suzuki scores, and the overall degree of necrosis. MMF treatment inhibited TLR4 activation dramatically. MMF administration also significantly inhibited the activation of the NF-κB pathway and the expression of pro-inflammatory cytokines. In TLR4 KO mice, MMF still exerted protection from hepatic I/R injury. MMF treatment inhibited hepatocyte apoptosis, as indicated by reduced TUNEL staining, and reduced the accumulation of cleaved caspase-3. In addition, MMF may induce autophagy and increase autophagic flux before and after hepatic reperfusion by augmenting the expression of LC3-II, P62, and Beclin-1. The induction of autophagy by MMF treatment may be related to TLR4 activation. CONCLUSIONS Our results indicate that MMF treatment ameliorates hepatic I/R injury. The mechanism of action likely involves the ability of MMF to decrease apoptosis and the inflammatory response while inducing autophagy.
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Affiliation(s)
- Cheng Xiong
- Department of General Surgery, Pancreatic disease center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Research Institute of Pancreatic Disease, Shanghai Jiaotong University School of Medicine, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, China; Institute of Translational Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Zhendong Du
- Department of Laboratory Medicine, Renji Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Youwei Zhu
- Department of General Surgery, Pancreatic disease center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Research Institute of Pancreatic Disease, Shanghai Jiaotong University School of Medicine, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, China; Institute of Translational Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, China.
| | - Meilin Xue
- Department of General Surgery, Pancreatic disease center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Research Institute of Pancreatic Disease, Shanghai Jiaotong University School of Medicine, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, China; Institute of Translational Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, China.
| | - Yongsheng Jiang
- Department of General Surgery, Pancreatic disease center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Research Institute of Pancreatic Disease, Shanghai Jiaotong University School of Medicine, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, China; Institute of Translational Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yiming Zhong
- Department of General Surgery, Pancreatic disease center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Research Institute of Pancreatic Disease, Shanghai Jiaotong University School of Medicine, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, China
| | - Lingxi Jiang
- Department of General Surgery, Pancreatic disease center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Research Institute of Pancreatic Disease, Shanghai Jiaotong University School of Medicine, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, China; Institute of Translational Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, China.
| | - Hao Chen
- Department of General Surgery, Pancreatic disease center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Research Institute of Pancreatic Disease, Shanghai Jiaotong University School of Medicine, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, China; Institute of Translational Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, China.
| | - Minmin Shi
- Department of General Surgery, Pancreatic disease center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Research Institute of Pancreatic Disease, Shanghai Jiaotong University School of Medicine, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, China; Institute of Translational Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, China.
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Nezamoleslami S, Sheibani M, Jahanshahi F, Mumtaz F, Abbasi A, Dehpour AR. Protective effect of dapsone against renal ischemia-reperfusion injury in rat. Immunopharmacol Immunotoxicol 2020; 42:272-279. [PMID: 32321337 DOI: 10.1080/08923973.2020.1755308] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Background: Ischemia/reperfusion can cause injury to tissues and compromise functionality of organs due to inflammatory processes. Significantly, development of these effects in kidney tissue has been a challenging issue that leads to acute renal injury. In this study, anti-inflammatory, anti-oxidative, and protective features of dapsone on kidney ischemia/reperfusion injury were investigated.Material and methods: Renal ischemia was induced in rats by bilateral renal arteries clamping for 45 min followed by 24 h reperfusion phase. The effects of different doses of dapsone (1, 3, 10 mg/kg) on ischemia/reperfusion injury in kidney tissue were investigated by targeting BUN, Creatinine, LDH, MDA, MPO, IL-1β, TNF-α, and NFκB. In addition histopathological examination was performed by H&E staining method.Results and discussion: Comparing the findings of this study showed significant reduction in BUN and LDH in 10 mg/kg dapsone received groups, and Cr, MDA, and MPO in 3 mg/kg dapsone received groups. The serum level of TNF-α was significantly decreased with both doses of 3 and 10 mg/kg dapsone. The same results were observed in the serum level of IL-1β and NFκB. Besides, remarkable improvement in histological damages was also observed with dapsone treatment.Conclusion: These results support the hypothesis that the positive effects of dapsone on the renal ischemia/reperfusion injury are mediated by modulating inflammatory cascades.
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Affiliation(s)
- Sadaf Nezamoleslami
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Sheibani
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Jahanshahi
- Student Research Committee, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Faiza Mumtaz
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Ata Abbasi
- Department of Pathology, Urmia University of Medical sciences (UMSU), Urmia, Iran
| | - Ahmad Reza Dehpour
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran
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Abu Jawdeh BG, Leonard AC, Sharma Y, Katipally S, Shields AR, Alloway RR, Woodle ES, Thakar CV. Contrast-Induced Nephropathy in Renal Transplant Recipients: A Single Center Experience. Front Med (Lausanne) 2017; 4:64. [PMID: 28603715 PMCID: PMC5445129 DOI: 10.3389/fmed.2017.00064] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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] [Received: 02/27/2017] [Accepted: 05/05/2017] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Contrast-induced nephropathy (CIN) in native kidneys is associated with a significant increase in mortality and morbidity. Data regarding CIN in renal allografts are limited, however. We retrospectively studied CIN in renal allografts at our institution: its incidence, risk factors, and effect on long-term outcomes including allograft loss and death. METHODS One hundred thirty-five renal transplant recipients undergoing 161 contrast-enhanced computed tomography (CT) scans or coronary angiograms (Cath) between years 2000 and 2014 were identified. Contrast agents were iso- or low osmolar. CIN was defined as a rise in serum creatinine (SCr) by >0.3 mg/dl or 25% from baseline within 4 days of contrast exposure. After excluding 85 contrast exposures where patients had no SCr within 4 days of contrast administration, 76 exposures (CT: n = 45; Cath: n = 31) in 50 eligible patients were analyzed. Risk factors assessed included demographics, comorbid conditions, type/volume of contrast agent used, IV fluids, N-acetylcysteine administration, and calcineurin inhibitor use. Bivariate and multivariable analyses were used to assess the risk of CIN. RESULTS Incidence of CIN was 13% following both, CT (6 out of 45) and Cath (4 out of 31). Significant bivariate predictors of CIN were IV fluid administration (p = 0.05), lower hemoglobin (p = 0.03), and lower albumin (p = 0.02). In a multivariable model, CIN was predicted by N-acetylcysteine (p = 0.03) and lower hemoglobin (p = 0.01). Calcineurin inhibitor use was not associated with CIN. At last follow-up, CIN did not affect allograft or patient survival. CONCLUSION CIN is common in kidney transplant recipients, and there is room for quality improvement with regards to careful renal function monitoring post-contrast exposure. In our study, N-acetylcysteine exposure and lower hemoglobin were associated with CIN. Calcineurin inhibitor use was not associated with CIN. Our sample size is small, however, and larger prospective studies of CIN in renal allografts are needed.
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Affiliation(s)
- Bassam G Abu Jawdeh
- Division of Nephrology and Hypertension, Kidney C.A.R.E. Program, University of Cincinnati, Cincinnati, OH, United States.,Cincinnati VA Medical Center, Cincinnati, OH, United States
| | - Anthony C Leonard
- Department of Family and Community Medicine, University of Cincinnati, Cincinnati, OH, United States
| | - Yuvraj Sharma
- Division of Nephrology and Hypertension, Henry Ford Hospital, Detroit, MI, United States
| | - Swapna Katipally
- Indiana University Health Ball Memorial Hospital, Muncie, IN, United States
| | - Adele R Shields
- Division of Transplant Surgery, The Christ Hospital, Cincinnati, OH, United States
| | - Rita R Alloway
- Division of Nephrology and Hypertension, Kidney C.A.R.E. Program, University of Cincinnati, Cincinnati, OH, United States
| | - E Steve Woodle
- Division of Transplant Surgery, University of Cincinnati, Cincinnati, OH, United States
| | - Charuhas V Thakar
- Division of Nephrology and Hypertension, Kidney C.A.R.E. Program, University of Cincinnati, Cincinnati, OH, United States.,Cincinnati VA Medical Center, Cincinnati, OH, United States
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Sahin Ersoy G, Kurek Eken M, Cevik O, Cilingir OT, Tal R. Mycophenolate mofetil attenuates uterine ischaemia/reperfusion injury in a rat model. Reprod Biomed Online 2016; 34:115-123. [PMID: 27913135 DOI: 10.1016/j.rbmo.2016.11.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 11/03/2016] [Accepted: 11/08/2016] [Indexed: 10/20/2022]
Abstract
This study evaluated the effect of mycophenolate mofetil (MMF) on uterine tissue preservation following ischaemia/reperfusion (I/R) injury. Uterine I/R injury was induced in rats by clamping the lower abdominal aorta and ovarian arteries for 30 min. Group I/R + V (n = 7) received vehicle alone while Group I/R + M (n = 7) received 20 mg/kg/day MMF. Control groups underwent sham surgery and received vehicle (Group C) or 20 mg/kg/day MMF (Group M) (n = 7 for both). Four hours after detorsion, uterine tissue 8-hydroxy-2'-deoxyguanosine (8-OHdG), glutathione, malondialdehyde (MDA), myeloperoxidase (MPO), superoxide dismutase (SOD) and serum ischaemia modified albumin (IMA) concentrations were measured. Histopathological analyses were performed. The I/R + M group showed significant reduction in serum IMA and uterine tissue 8-OHdG, MDA and MPO and significant increase in SOD concentrations compared with the I/R + V group, indicating a protective effect against I/R oxidative damage (P = 0.009, P = 0.006, P = 0.002, P = 0.003 and P = 0.009, respectively). Histopathological evaluation revealed MMF treatment resulted in significantly less tissue and cellular damage and apoptosis compared with the I/R + V group. These results indicate MMF is effective in attenuating uterine tissue damage and preventing apoptosis following uterine I/R injury, probably via anti-inflammatory and anti-oxidative action.
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Affiliation(s)
- Gulcin Sahin Ersoy
- Department of Obstetrics and Gynecology, Kartal Dr Lutfi Kirdar Education and Research Hospital, Istanbul, Turkey.
| | - Meryem Kurek Eken
- Department of Obstetrics and Gynecology, Zeynep Kamil Education and Research Hospital, Istanbul, Turkey
| | - Ozge Cevik
- Department of Biochemistry, Faculty of Pharmacy, Cumhuriyet University, Sivas, Turkey
| | - Ozlem T Cilingir
- Department of Histology and Embryology, Marmara University School of Medicine, Istanbul, Turkey
| | - Reshef Tal
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
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Guan H, Lin Y, Bai L, An Y, Shang J, Wang Z, Zhao S, Fan J, Liu E. Dietary Cocoa Powder Improves Hyperlipidemia and Reduces Atherosclerosis in apoE Deficient Mice through the Inhibition of Hepatic Endoplasmic Reticulum Stress. Mediators Inflamm 2016; 2016:1937572. [PMID: 26980943 DOI: 10.1155/2016/1937572] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 01/11/2016] [Accepted: 01/14/2016] [Indexed: 01/24/2023] Open
Abstract
Cocoa powder is rich in flavonoids, which have many beneficial effects on human health, including antioxidative and anti-inflammatory effects. The aim of our study was to investigate whether the intake of cocoa powder has any influence on hyperlipidemia and atherosclerosis and examine the underlying molecular mechanisms. We fed apoE knockout mice a Western diet supplemented with either 0.2% (low group) or 2% (high group) cocoa powder for 12 weeks. The groups fed dietary cocoa powder showed a significant reduction in both plasma cholesterol levels and aortic atherosclerosis compared to the control group. Analysis of mRNA profiling of aortic atherosclerotic lesions revealed that the expression of several genes related to apoptosis, lipid metabolism, and inflammation was significantly reduced, while the antiapoptotic gene Bcl2 was significantly increased in the cocoa powder group compared to the control. RT-PCR analysis along with Western blotting revealed that a diet containing cocoa powder inhibited the expression of hepatic endoplasmic reticulum stress. These data suggest that cocoa powder intake improves hyperlipidemia and atherosclerosis, and such beneficial effects are possibly mediated through the suppression of hepatic endoplasmic reticulum stress.
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Abstract
Liver transplantation is the best therapy in end-stage liver disease. Donor organ shortage and efforts to expand the donor organ pool are permanent issues given that advances in perioperative management and immunosuppressive therapy have brought the procedure into widespread clinical use. The management of organ procurement, including donor preconditioning and adequate organ storage, has a key role in transplantation. However, the organ procurement process can differ substantially between transplant centres, depending on local and national preferences. Advances in the field have come from experimental and clinical research on dynamic storage systems, such as machine perfusion devices, as an alternative to static cold storage. Determination of the clinical significance of these new systems is a topic worthy of future investigations.
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Taki-eldin A, Zhou L, Xie H, Chen K, Yu D, He Y, Zheng S. Triiodothyronine attenuates hepatic ischemia/reperfusion injury in a partial hepatectomy model through inhibition of proinflammatory cytokines, transcription factors, and adhesion molecules. J Surg Res 2012; 178:646-56. [DOI: 10.1016/j.jss.2012.05.069] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Revised: 04/25/2012] [Accepted: 05/23/2012] [Indexed: 02/04/2023]
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Lim EJ, Chin R, Angus PW, Torresi J. Enhanced apoptosis in post-liver transplant hepatitis C: Effects of virus and immunosuppressants. World J Gastroenterol 2012; 18:2172-9. [PMID: 22611309 PMCID: PMC3351766 DOI: 10.3748/wjg.v18.i18.2172] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Revised: 03/29/2012] [Accepted: 04/09/2012] [Indexed: 02/06/2023] Open
Abstract
Hepatitis C (HCV)-infected patients have a poorer survival post-liver transplantation compared to patients transplanted for other indications, since HCV recurrence post-transplant is universal and commonly follows an aggressive course. There is increasing evidence that in the non-transplant setting, induction of hepatocyte apoptosis is one of the main mechanisms by which HCV drives liver inflammation and fibrosis, and that HCV proteins directly promote apoptosis. Recent studies have shown that post-liver transplant, there is a link between high levels of HCV replication, enhanced hepatocyte apoptosis and the subsequent development of rapidly progressive liver fibrosis. Although the responsible mechanisms remain unclear, it is likely that immunosuppressive drugs play an important role. It is well known that immunosuppressants impair immune control of HCV, thereby allowing increased viral replication. However there is also evidence that immunosuppressants may directly induce apoptosis and this may be facilitated by the presence of high levels of HCV replication. Thus HCV and immunosuppressants may synergistically interact to further enhance apoptosis and drive more rapid fibrosis. These findings suggest that modulation of apoptosis within the liver either by changing immunosuppressive therapy or the use of apoptosis inhibitors may help prevent fibrosis progression in patients with post-transplant HCV disease.
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Balfoussia D, Yerrakalva D, Hamaoui K. Advances in Machine Perfusion Graft Viability Assessment in Kidney, Liver, Pancreas, Lung, and Heart Transplant. EXP CLIN TRANSPLANT 2012; 10:87-100. [DOI: 10.6002/ect.2011.0167] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Chauhan A, Sharma U, Reeta KH, Jagannathan NR, Mehra RD, Gupta YK. Neuroimaging, biochemical and cellular evidence of protection by mycophenolate mofetil on middle cerebral artery occlusion induced injury in rats. Eur J Pharmacol 2012; 684:71-8. [PMID: 22487058 DOI: 10.1016/j.ejphar.2012.03.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2011] [Revised: 03/09/2012] [Accepted: 03/22/2012] [Indexed: 10/28/2022]
Abstract
Stroke is a major cause of mortality and disability worldwide. Presently, recombinant tissue plasminogen activator is the only approved drug for the management of acute ischemic stroke. However, it has limitations like narrow therapeutic window and increased risk of intracranial hemorrhage. In previous studies, immunosuppressive agents such as cyclosporine A and tacrolimus have shown neuroprotection by improving neurological functions and infarct volume in models of ischemic stroke. Therefore, the present study was designed to evaluate the effect of mycophenolate mofetil (MMF) on the cerebral ischemic injury in the middle cerebral artery occlusion (MCAo) model in rats. MCAo was carried out in male Wistar rats by inserting an intraluminal thread. One hour after MCAo, the animals were treated with MMF (50, 100, 200mg/kg, i.p.). Reperfusion was done after 2h of occlusion. Thirty minutes after reperfusion, animals were subjected to diffusion-weighted magnetic resonance imaging for assessment of neuroprotective effect of MMF. Twenty four hours after MCAo, motor performance was assessed and the animals were euthanized for estimation of brain malondialdehyde, glutathione, myeloperoxidase and nitric oxide levels. The effect of MMF on apoptosis was also evaluated. MMF significantly attenuated the percent infarct area, apparent diffusion coefficient and signal intensity as compared to a vehicle treated group. Treatment with MMF prevented the motor impairment and significantly reversed the changes in levels of malondialdehyde, glutathione, myeloperoxidase and nitric oxide. MMF treatment significantly reduced the apoptosis. Data of the present study indicate neuroprotective effect of MMF in the experimental model of ischemic stroke.
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Affiliation(s)
- Anjali Chauhan
- Neuropharmacology Laboratory, Department of Pharmacology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India
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13
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Vekemans K, Monbaliu D, Balligand E, Heedfeld V, Jochmans I, Pirenne J, van Pelt J. Improving the function of liver grafts exposed to warm ischemia by the Leuven drug protocol: exploring the molecular basis by microarray. Liver Transpl 2012; 18:206-18. [PMID: 21987442 DOI: 10.1002/lt.22446] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Livers exposed to warm ischemia (WI) before transplantation are at risk for primary nonfunction (PNF), graft dysfunction, and ischemic biliary strictures, all associated with ischemia/reperfusion injury (IRI). Our multifactorial approach, Leuven drug protocol (LDP), has been shown to reduce these effects and increase recipient survival in WI/IRI-damaged porcine liver transplantation. The aim was the identification of the molecular mechanisms responsible for the hepatoprotective effects of the LDP. Porcine livers were exposed to 45 minutes of WI, cold-stored for 4 hours, transplanted, and either modulated (LDP group; n = 3) or not modulated (control group; n = 4). In the LDP group, the donor livers were flushed with streptokinase and epoprostenol before cold perfusion; the recipients received intravenous glycine, a-1-acid-glycoprotein, FR167653 (a mitogen-activated protein kinase inhibitor), a-tocopherol, glutathione, and apotransferrin. Liver samples were taken before WI and 1 hour after reperfusion. Gene expression was determined with microarrays and molecular pathways and key regulatory genes were identified. The number of genes changed between baseline and 1 hour after reperfusion was 686 in the LDP group and 325 in the control group. The extra genes in the LDP group belonged predominantly to pathways related to cytokine activity, apoptosis, and cell proliferation. We identified 7 genes that were suppressed in the LDP group. These genes could be linked in part to the administered drugs. New potential drug targets were identified on the basis of genes induced in the control group but unaffected in the LDP group and interactions predicted by the literature. In conclusion, the LDP primarily resulted in the suppression of inflammation-regulating genes in IRI. Furthermore, the microarray technique helped us to identify additional gene targets.
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Affiliation(s)
- Katrien Vekemans
- Liver Research Facility/Department of Abdominal Transplant Surgery, University Hospitals Leuven, Leuven, Belgium
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Yan S, Ding Y, Sun F, Lu Z, Xue L, Liu X, Shuai M, Fang C, Wang Y, Cheng H, Zhou L, Zheng MH, Zheng S. Pretreatment of cisplatin in recipients attenuates post-transplantation pancreatitis in murine model. Int J Biol Sci 2012; 8:298-309. [PMID: 22355266 PMCID: PMC3282993 DOI: 10.7150/ijbs.3656] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [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] [Received: 10/18/2011] [Accepted: 12/21/2011] [Indexed: 12/25/2022] Open
Abstract
Pancreas transplantation is the definite treatment for type 1 diabetes that enables the achievement of long-term normoglycemia and insulin independence. However Post-Transplantation Pancreatitis (PTP) due to ischemia reperfusion (IR) injury and preservation is a major complication in pancreas transplantation. Owning the potential anti-inflammatory effect of Cisplatin (Cis) in liver IR injury, we have examined if Cis could attenuate PTP using a murine model. We found that Cis is able to prevent inflammatory response in PTP. Pretreatment of Cis in recipient mice reduce the impairments of the grafts and hyperamylasimea in the recipients. We documented that the protective mechanism of Cis in PTP involves improvement of microcirculation, reduction of the mononuclear cellular infiltration and apoptosis, suppression of inflammatory cytokine-cascade and inhibition of translocation of high-motility group box protein-1 (HMGB-1) from nucleus to cytoplasm. In short, our study demonstrated that pretreatment of Cis in recipients may reduce the onset of PTP in pancreas transplantation.
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Affiliation(s)
- Sheng Yan
- Division of Hepatobiliary and Pancreatic Surgery, Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, PR China
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Yan S, Zhou B, Zhang Q, Li Z, Shao Y, Chen H, Zheng S. Hepatic venous occlusion causes more impairment after reperfusion compared with portal clamping in a murine model. J Surg Res 2010; 169:117-24. [PMID: 20371085 DOI: 10.1016/j.jss.2009.12.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2009] [Revised: 11/28/2009] [Accepted: 12/08/2009] [Indexed: 12/23/2022]
Abstract
BACKGROUND Hepatic ischemia/reperfusion (IR) has been extensively studied, but reperfusion after acute hepatic congestion caused by venous occlusion is poorly understood. Congestion/reperfusion (CR) is not uncommon with the development of partial liver transplantation and liver resection. The purpose of this study was to compare the impairments caused by acute hepatic CR or IR using a murine model. MATERIALS AND METHODS Mice were randomly divided into IR, CR, and a sham operation (SO) group. The portal vein and hepatic artery of the left anterior hepatic lobe (LAHL) were clamped in the IR group, while the hepatic vein of the LAHL was temporarily occluded in the CR Group. This occurred for 75 min followed by reperfusion. The animals were sacrificed at 2, 6, and 24h after reperfusion. Blood and liver samples were collected for hepatic function, histology, myeloperoxidase (MPO), intravital microscopy, and real-time PCR analysis. RESULTS Both IR and CR groups showed elevated liver function, histologic damage, cellular apoptosis, and microcirculatory dysfunction compared with the SO group. Compared with the IR group, the CR group revealed higher hepatic enzyme activities (ALT: 838.5 ± 155.6 versus 474.6 ± 123.8 P<0.05, AST: 792.5 ± 93.5 versus 574.8 ± 188.4 P<0.05), increased sinusoidal nonperfusion rate at 2h after reperfusion (27.4% ± 1.97% versus 23.8% ± 1.93%, P<0.05), and raised MPO level at 24h (0.34 ± 0.11 versus 0.15 ± 0.04, P<0.01). The mRNA levels of IL-1β at 6h and MCP-1 at 2 and 6h were markedly higher in the CR group than in the IR group. CONCLUSION Hepatic reperfusion after acute congestion provokes an increased inflammatory response and causes more severe impairments in the liver compared with ischemia/reperfusion in a murine model.
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Affiliation(s)
- Sheng Yan
- Key Laboratory of Combined Multiorgan Transplantation, Ministry of Public Health, Zhejiang Province, Hangzhou, China
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