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Eygi E, Gul R, Aslan M, Tas ZA, Dokuyucu R. The Promising Effects of Erdosteine and Vitamin B in the Liver Ischemia/Reperfusion Model in Anesthetized Rats. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:783. [PMID: 38792966 PMCID: PMC11123104 DOI: 10.3390/medicina60050783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 05/01/2024] [Accepted: 05/02/2024] [Indexed: 05/26/2024]
Abstract
Background and Objectives: Erdosteine (Erd) is an antioxidant and anti-inflammatory drug. Vitamin B has been reported to exert anti-inflammatory and antioxidant effects. In this study, we investigated the effect of erdosteine and vitamin B complex on a liver ischemia/reperfusion (I/R) model. Materials and Methods: Thirty-two Wistar Albino male rats weighing 350-400 g were used. The animals were randomly selected and divided into four groups. The groups are as follows: first group (Sham), second group (I/R), third group (I/R + vit B), and fourth group (I/R + vit B + Erd). Rats were subjected to 45 min of hepatic ischemia, followed by a 45 min reperfusion period in the I/R and Vitamin B + Erd groups. An amount of 150 mg/kg/day of erdosteine was given orally for 2 days, and 0.05 mL/kg of i.p. vitamin B complex was given 30 min before the reperfusion. Serum biochemical parameters were measured. Serum Total Antioxidant Status (TAS) and Total Oxidant Status (TOS) were measured, and the Oxidative Stress Index (OSI) was calculated. Hepatic tissue samples were taken for the evaluation of histopathological features. Results: In terms of all histopathological parameters, there were significant differences in the I/R + vit B group and I/R + vit B + Erd group compared with the I/R group (p < 0.01). In terms of aspartate aminotransferase (AST), alanine aminotransferase (ALT), lactate dehydrogenase (LDH), TNF-alpha, and IL-6 levels, there were significant differences between the I/R group and treatment groups (p < 0.01). The lowest TOS and OSI levels were obtained in the treatment groups, and these groups had statistically significantly higher TAS levels compared with the sham and I/R groups (p < 0.01). Conclusions: As a preliminary experimental study, our study suggests that these agents may have potential diagnostic and therapeutic implications for both ischemic conditions and liver-related diseases. These results suggest that the combination of vit B + Erd may be used to protect against the devastating effects of I/R injury. Our study needs to be confirmed by clinical studies with large participation.
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Affiliation(s)
- Elif Eygi
- Department of Anesthesiology and Reanimation, Gaziantep City Training and Research Hospital, Gaziantep 27470, Türkiye;
| | - Rauf Gul
- Department of Anesthesiology and Reanimation, School of Medicine, Gaziantep University, Gaziantep 27470, Türkiye;
| | - Murat Aslan
- Department of Anesthesiology and Reanimation, Gaziantep City Training and Research Hospital, Gaziantep 27470, Türkiye;
| | - Zeynel Abidin Tas
- Department of Pathology, Adana City Education and Research Hospital, University of Health Sciences, Adana 01230, Türkiye;
| | - Recep Dokuyucu
- Department of Physiology, Medical Specialization Training Center (TUSMER), Ankara 06230, Türkiye;
- Physioclinic Private Center, Gaziantep 27560, Türkiye
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Zaitsev AA, Filon EA, Storozheva YI. [Acute bronchitis - modern possibilities of mucactive therapy]. TERAPEVT ARKH 2023; 95:943-950. [PMID: 38158950 DOI: 10.26442/00403660.2023.11.202470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 11/16/2023] [Indexed: 01/03/2024]
Abstract
AIM Analysis of the clinical effectiveness and safety of erdosteine use in comparison with standard (real practice) mucoactive therapy in patients with acute bronchitis (АВ) in adults. MATERIALS AND METHODS The observational program included 100 adult patients with АВ, 50 of them (group 1) received erdosteine, the group 2 also included 50 patients who received acetylcysteine, bromhexine and other mucolytics (real clinical practice). The following were assessed: cough severity, average time for resolution of night and daytime cough, satisfaction with treatment, NO concentration in exhaled air, levels of C-reactive protein (CRP) and interleukin-6 (IL-6). RESULTS The average duration of relief of severe daytime cough requiring continued therapy was: in group 1 - 3.7±0.46 days, night cough - 1.14±0.94 days. In the second group, daytime cough was relieved in 3.8±0.4 days, night cough - 1.08±0.7 days. The duration of mucoactive therapy in group 1 was 5.32±0.82 days, in group 2 this figure was 8.5±1.4 days (p<0.05). The number of АВ patients with a significant reduction in the severity of productive cough (1 point on cough severity scale) on the 6th day from the beginning of treatment in group 1 (erdosteine) amounted to 32 (64%), in group 2 - 27 (54%). Satisfaction with the treatment was higher in the group receiving erdosteine: according to the indicators "very satisfied" and "extremely satisfied" the patients of the group 1 - 42 - were the leaders in comparison with the group 2, where these positions were marked by 28 patients. The level of CRP in patients with АВ in group 1 was 24.7±21.24 mg/l, in group 2 - 16.37±16.5 mg/l, which indicates the viral etiology of the process and no need in the prescription of antimicrobial drugs. For the first time in Russian practice, the following were determined: the level of IL-6, which in the group 1 was 10.3±6.7 pc/ml; in the group 2 - 10.03±3.94 pc/ml; the level of exhaled NO in group 1 was 16.5±5.1 ppb, in group 2 - 14.9±4.6 ppb (the norm is up to 25 ppb). These indicators, against the background of mucoactive therapy, decreased to normal values by 6th day. CONCLUSION The findings expand our understanding of АВ in adults. New results have been obtained on the role of CRP, IL-6 and NO in exhaled air during АВ. The use of erdosteine was accompanied by a significant mucoactive effect in the form of a pronounced regression of cough in patients with АВ compared to the comparison group in shorter term.
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Affiliation(s)
- A A Zaitsev
- Burdenko Main Military Clinical Hospital
- Russian Biotechnological University
- Central Research Institute of Epidemiology
| | - E A Filon
- Burdenko Main Military Clinical Hospital
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Ede S, Özbeyli D, Erdoğan Ö, Çevik Ö, Kanpalta F, Ercan F, Yanardağ R, Saçan Ö, Ertik O, Yüksel M, Şener G. Hepatoprotective effects of parsley (Petroselinum Crispum) extract in rats with bile duct ligation. Arab J Gastroenterol 2023; 24:45-51. [PMID: 36379859 DOI: 10.1016/j.ajg.2022.10.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 02/11/2022] [Accepted: 10/16/2022] [Indexed: 11/14/2022]
Abstract
BACKGROUND AND STUDY AIMS This study aimed to investigate the possible protective effects of parsley extract (Petroselinum Crispum; PC) against oxidative liver damage caused by bile obstruction in rats. MATERIAL AND METHODS Bile duct ligation (BDL) method was used to induce liver injury in rats. The rats were divided into the three groups each consisting of 8 rats; Sham-operated control (C), bile duct ligated + saline treated (BDL), and BDL + PC treated groups. PC extract was given at a dose of 2 g/kg orally for 28 days. Aspartate amino transferase (AST), alanin amino transferase (ALT), and bilirubin levels were analyzed in sera. In order to determine free radicals in liver injury, luminol and lucigenin chemiluminescence tests used. Oxidative stress was evaluated through superoxide dismutase, glutathione, malondialdehyde, Na+/K+-ATPase and 8-hydroxy guanosine levels. Furthermore, inflammation marker myeloperoxidase, apoptosis marker caspase-3, and fibrosis markers TGF- β and hydoxyproline were investigated. The liver tissues were also examined for histological evaluations. RESULTS While PC treatment decreased AST and ALT levels which increased with BDL, oxidant damage parameters also decreased with this treatment. CONCLUSION The present study, which is the first research for PC extract on cholestasis induced liver damage, demonstrated that PC extract could be a potential therapeutic agent against liver fibrosis and need further studies.
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Affiliation(s)
- Seren Ede
- Marmara University, School of Pharmacy, Department of Pharmacology, Istanbul, Turkey
| | - Dilek Özbeyli
- Marmara University, Vocational School of Health Services, Istanbul, Turkey
| | - Ömer Erdoğan
- Adnan Menderes University, School of Medicine, Department of Biochemistry, Aydın, Turkey
| | - Özge Çevik
- Adnan Menderes University, School of Medicine, Department of Biochemistry, Aydın, Turkey
| | - Fatma Kanpalta
- Marmara University, School of Medicine, Department of Histology & Embriology, Istanbul, Turkey
| | - Feriha Ercan
- Marmara University, School of Medicine, Department of Histology & Embriology, Istanbul, Turkey
| | - Refiye Yanardağ
- İstanbul University-Cerrahpasa Faculty of Engineering Department of Chemistry, Avcilar-Istanbul, Turkey
| | - Özlem Saçan
- İstanbul University-Cerrahpasa Faculty of Engineering Department of Chemistry, Avcilar-Istanbul, Turkey
| | - Onur Ertik
- İstanbul University-Cerrahpasa Faculty of Engineering Department of Chemistry, Avcilar-Istanbul, Turkey
| | - Meral Yüksel
- Marmara University, Vocational School of Health Services, Department of Biochemistry, Istanbul, Turkey
| | - Göksel Şener
- Fenerbahçe University, Faculty of Pharmacy, Istanbul, Turkey.
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Slc25a39 and Slc25a40 Expression in Mice with Bile Duct Ligation or Lipopolysaccharide Treatment. Int J Mol Sci 2022; 23:ijms23158573. [PMID: 35955707 PMCID: PMC9369313 DOI: 10.3390/ijms23158573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 07/28/2022] [Accepted: 07/30/2022] [Indexed: 02/01/2023] Open
Abstract
SLC25A39/40, involved in mitochondrial GSH (mGSH) import from the cytoplasm, is essential for protection against oxidative stress and mitochondrial dysfunction. We examined the effects of cholestasis, through bile duct ligation (BDL) and lipopolysaccharide (LPS)-induced inflammation in mice, on Slc25a39/40 expression. Additionally, we used human clear cell renal carcinoma (KMRC-1) cells to elucidate the mechanism of regulation of SLC25A39/40 expression in the kidneys after LPS treatment. BDL resulted in a decrease in Slc25a39 mRNA in the liver and a decrease in Slc25a39/40 mRNA and protein in the kidneys. Consequently, there was a significant decrease in mGSH levels in the kidneys of BDL mice compared with those in sham mice. LPS treatment resulted in increased Slc25a40 expression in the kidneys. In KMRC-1 cells, the combination treatment of LPS-RS or FPS-ZM1 with LPS suppressed the LPS-induced increase in SLC25A40, suggesting that SLC25A40 expression could be regulated by the signaling pathway via toll-like receptor 4 and the receptor for advanced glycation end products, respectively. Our findings contribute to understanding the role of mGSH in the maintenance of the mitochondrial redox state. To the best of our knowledge, this is the first study that demonstrates the changes in Slc25a39/40 expression in mice with cholestasis-associated renal injury and LPS-induced inflammation.
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Bayram R, Yilmaz I, Yaykasli KO, Kaya E. Erdosteine reduces alpha- and beta-amanitin-induced cytotoxicity, not gamma-amanitin, in CA3 hepatocyte cultures. Toxicon 2022; 213:52-58. [DOI: 10.1016/j.toxicon.2022.04.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 04/12/2022] [Accepted: 04/13/2022] [Indexed: 11/30/2022]
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Barlas AM, Kismet K, Erel S, Kuru S, Cavusoglu T, Senes M, Adiyaman Z, Celepli P, Hucumenoglu S, Pekcici R. Erdosteine ameliorates the harmful effects of ischemia-reperfusion injury on the liver of rats. Acta Cir Bras 2017; 32:796-806. [PMID: 29160366 DOI: 10.1590/s0102-865020170100000001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 09/18/2017] [Indexed: 11/22/2022] Open
Abstract
PURPOSE To investigate the potential protective effects of erdosteine against the harmful effects of ischemia-reperfusion injury on the liver in an experimental rat model. METHODS Forty rats were divided into 4 groups. In the sham group, only the hepatic pedicle was mobilized. No other manipulation or treatment was performed. In the other groups, ischemia was achieved by clamping the hepatic pedicle for 60 min. After that, 90 min reperfusion was provided. In the control group, no treatment was given. In the perioperative treatment group, 100 mg/kg erdosteine was administered 2 hours before ischemia induction. In the preoperative treatment group, 100 mg/kg/day erdosteine was administered daily for ten days before the operation. At the end of the procedures, blood and liver samples were obtained for biochemical and histopathological assessment. RESULTS Treatment with erdosteine ameliorated the histopathological abnormalities when compared with the control group. Furthermore, this treatment significantly decreased the serum liver function test values. It was also found that erdosteine ameliorated the oxidative stress parameters in both the perioperative and preoperative treatment groups. CONCLUSION The current study is the first to have shown the favorable effects of erdosteine on the harmful effects of experimental hepatic ischemia-reperfusion injury.
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Affiliation(s)
- Aziz Mutlu Barlas
- MD, Ankara Education and Research Hospital, Department of General Surgery, Ankara, Turkey. Design of the study, technical procedures
| | - Kemal Kismet
- Associate Professor, Ankara Education and Research Hospital, Department of General Surgery, Ankara, Turkey. Design of the study, analysis of data
| | - Serap Erel
- IIIIAssociate Professor, Ankara Education and Research Hospital, Department of General Surgery, Ankara, Turkey. Critical revision
| | - Serdar Kuru
- Associate Professor, Ankara Education and Research Hospital, Department of General Surgery, Ankara, Turkey. Technical procedures
| | - Turgut Cavusoglu
- Associate Professor, Ankara Education and Research Hospital, Department of General Surgery, Ankara, Turkey. Conception of the study, interpretation of data
| | - Mehmet Senes
- PhD, Associate Professor, Ankara Education and Research Hospital, Department of Biochemistry, Ankara, Turkey. Performed the biochemical analyses
| | - Zeynep Adiyaman
- MD, Ankara Education and Research Hospital, Department of Biochemistry, Ankara, Turkey. Performed the biochemical analyses
| | - Pinar Celepli
- MD, Ankara Education and Research Hospital, Department of Pathology, Ankara, Turkey. Histopathological examinations
| | - Sema Hucumenoglu
- Full Professor, Ankara Education and Research Hospital, Department of Pathology, Ankara, Turkey. Histopathological examinations
| | - Recep Pekcici
- Associate Professor, Ankara Education and Research Hospital, Department of General Surgery, Ankara, Turkey. Conception of the study, interpretation of data
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Effects of Myrtus communis extract treatment in bile duct ligated rats. J Surg Res 2016; 205:359-367. [PMID: 27664884 DOI: 10.1016/j.jss.2016.06.094] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 05/28/2016] [Accepted: 06/26/2016] [Indexed: 11/22/2022]
Abstract
BACKGROUND The aim of our study was to investigate the antifibrotic and antioxidant effects of Myrtus communis subsp. communis (MC) extract against liver injury and fibrosis occurring in rats with biliary obstruction. MATERIALS AND METHODS The rats were randomized into four groups (n = 8). Control group (C), MC-administrated group (MC), the bile duct ligation (BDL), and BDL + MC groups. MC was administered at a dose of 50 mg/kg a day orally for 28 days. In blood samples, total bilirubin, direct bilirubin, alanine aminotransferase, aspartate aminotransferase levels, tumor necrosis factor-α, and interleukin-1β measurement were measured. Oxidative injury was examined by measuring luminol and lucigenin chemiluminescence, malondialdehyde and glutathione levels, superoxide dismutase and myeloperoxidase activities. Transforming growth factor-beta and hydroxyproline levels were measured for analyzing fibrosis. The hepatic injury was also analyzed microscopically. RESULTS Plasma total bilirubin, direct bilirubin, alanine aminotransferase, aspartate aminotransferase, tumor necrosis factor-α, and interleukin-1β levels were found significantly high in the BDL group, while these values significantly decreased in the BDL group treated with MC. On the other hand, the glutathione and superoxide dismutase values significantly decreased in the BDL group compared to the control group but increased markedly in BDL + MC group compared to the BDL group. Malondialdehyde levels, myeloperoxidase activity, tissue luminol, lucigenin, transforming growth factor-beta, and hydroxyproline levels when compared with the control group increased dramatically in the BDL group and reduced the MC + BDL group. CONCLUSIONS Our results suggest that MC protects the liver tissues against oxidative damage following BDL via its radical scavenging and antioxidant activities, which appear to involve the inhibition of tissue neutrophil infiltration.
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Erarslan E, Ekiz F, Uz B, Koca C, Turkcu UO, Bayrak R, Delibasi T. Effects of erdosteine on cyclosporine-A-induced hepatotoxicity in rats. Drug Chem Toxicol 2010; 34:32-7. [PMID: 20954827 DOI: 10.3109/01480545.2010.483519] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Cyclosporine A (CsA) is a potent immunosuppressive agent used for organ transplantations and various autoimmune disorders. However, hepatotoxicity due to CsA remains one of the major side effects. The use of antioxidants reduces the adverse effects of CsA. The aim of this study was to determine the protective effects of erdosteine on CsA-induced liver injury through tissue oxidant/antioxidant parameters and to evaluate light microscopic alterations in rat-liver tissues. Rats were randomly divided into four experimental groups: The control group received sunflower oil (2 mL/kg/day, per orally; p.o.), while the other groups were treated with CsA (25 mg/kg/day, p.o.) or erdosteine (10 mg/kg/day, p.o.) or CsA+erdosteine, respectively. Serum aspartate aminotransferase and alanine aminotransferase levels, tissue malondialdehyde and nitric oxide levels, and superoxide dismutase, glutathione peroxidase and catalase enzyme activities were measured. Histological examination was performed. CsA caused a significant deterioration in the hepatic function tests, morphology, and gave rise to severe oxidative stress in the liver. Erdostein significantly improved the functional and histological parameters and attenuated the oxidative stresss induced by CsA. Erdostein protects liver tissue against oxygen free radicals and prevents hepatic dysfunction and morphological abnormalities associated with chronic CsA administration.
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Affiliation(s)
- Elife Erarslan
- Department of Gastroenterology, Fatih University Medical School, Ankara, Turkey
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Aksu B, Umit H, Kanter M, Guzel A, Aktas C, Civelek S, Uzun H. Effects of methylene blue in reducing cholestatic oxidative stress and hepatic damage after bile-duct ligation in rats. Acta Histochem 2010; 112:259-69. [PMID: 19217652 DOI: 10.1016/j.acthis.2008.12.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2008] [Revised: 11/21/2008] [Accepted: 12/02/2008] [Indexed: 12/11/2022]
Abstract
The aim of this study was to evaluate the effects of methylene blue against cholestatic oxidative stress and liver damage after ligation of the common bile duct in male Wistar rats. Eight animals were included in each of the following five groups: untreated control, methylene blue control, sham-operated, bile-duct ligation, and bile-duct ligation plus methylene blue. Methylene blue was administered intraperitoneally for 14 days at a daily dose of 2mg/kg per day. All rats were sacrificed 2 weeks following the experimental treatment and the livers of all groups were examined biochemically and histopathologically. The severity of cholestasis and hepatic injury were determined by changes in the plasma, including enzymatic activities: aspartate aminotransferase, alanine aminotransferase, gamma glutamine transferase, and also bilirubin levels. Malondialdehyde, nitric oxide and superoxide dismutase were measured to indicate the oxidative status in the liver tissue. Myeloperoxidase activity and levels of tissue hydroxyproline were determined as measures of neutrophil activation and collagen accumulation, respectively. Liver damage was significantly prevented in the bile-duct ligated rats treated with methylene blue compared with the control bile-duct ligated rats without methylene blue. Treatment with methylene blue markedly reduced activities of serum transaminase, gamma glutamine transferase and bilirubin levels as compared to bile-duct ligated rats without methylene blue. Positive immunolabelling for alpha-smooth muscle actin (alpha-SMA) was increased, especially in vascular smooth muscle cells, fibrotic septa and also around the proliferated bile ducts, after bile-duct ligation. Only weak alpha-SMA immunolabelling was seen in livers of rats treated with methylene blue. These results indicate that methylene blue can attenuate hepatic damage in extrahepatic cholestasis by reducing oxidative stress and inflammatory processes.
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Affiliation(s)
- Burhan Aksu
- Department of Pediatric Surgery, Faculty of Medicine, Trakya University, Edirne 22030, Turkey.
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Toklu HZ, Dumlu MU, Sehirli O, Ercan F, Gedik N, Gökmen V, Sener G. Pomegranate peel extract prevents liver fibrosis in biliary-obstructed rats. J Pharm Pharmacol 2008; 59:1287-95. [PMID: 17939210 DOI: 10.1211/jpp.59.9.0014] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Punica granatum L. (pomegranate) is a widely used plant that has high nutritional value. The aim of this study was to assess the effect of chronic administration of pomegranate peel extract (PPE) on liver fibrosis induced by bile duct ligation (BDL) in rats. PPE (50 mg kg(-1)) or saline was administered orally for 28 days. Serum aspartate aminotransferase (AST), alanine aminotransferase (ALT) and lactate dehydrogenase (LDH) levels were determined to assess liver function and tissue damage. Proinflammatory cytokines (tumor necrosis factor-alpha and interleukin 1 beta) in the serum and antioxidant capacity (AOC) were measured in plasma samples. Samples of liver tissue were taken for measurement of hepatic malondialdehyde (MDA) and glutathione (GSH) levels, myeloperoxidase (MPO) activity and collagen content. Production of reactive oxidants was monitored by chemiluminescence assay. Serum AST, ALT, LDH and cytokines were elevated in the BDL group compared with the control group; this increase was significantly decreased by PPE treatment. Plasma AOC and hepatic GSH levels were significantly depressed by BDL but were increased back to control levels in the PPE-treated BDL group. Increases in tissue MDA levels and MPO activity due to BDL were reduced back to control levels by PPE treatment. Similarly, increased hepatic collagen content in the BDL rats was reduced to the level of the control group with PPE treatment. Thus, chronic PPE administration alleviated the BDL-induced oxidative injury of the liver and improved the hepatic structure and function. It therefore seems likely that PPE, with its antioxidant and antifibrotic properties, may be of potential therapeutic value in protecting the liver from fibrosis and oxidative injury due to biliary obstruction.
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Affiliation(s)
- Hale Z Toklu
- Department of Pharmacology, School of Pharmacy, Marmara University, Istanbul, Turkey
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Işeri SO, Sener G, Saglam B, Ercan F, Gedik N, Yeğen BC. Ghrelin alleviates biliary obstruction-induced chronic hepatic injury in rats. ACTA ACUST UNITED AC 2007; 146:73-9. [PMID: 17884193 DOI: 10.1016/j.regpep.2007.08.014] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2007] [Revised: 07/25/2007] [Accepted: 08/09/2007] [Indexed: 12/31/2022]
Abstract
BACKGROUND Reactive oxygen species and oxidative stress are implicated in hepatic stellate cell activation and liver fibrosis, which are initiated by recruitment of inflammatory cells and by activation of cytokines. OBJECTIVE The possible anti-oxidant and anti-inflammatory effects of ghrelin were evaluated in a hepatic fibrosis model in rats with bile duct ligation (BDL). METHODS Under anesthesia, bile ducts of Sprague Dawley rats were ligated, and half of the rats were subcutaneously administered with ghrelin (10 ng/kg/day) and the rest with saline for 28 days. Sham-operated control groups were administered saline or ghrelin. On the 28th day of the study, rats were decapitated and malondialdehyde (MDA) content--an index of lipid peroxidation, and myeloperoxidase (MPO) activity--an index of neutrophil infiltration--were determined in the liver tissues. Oxidant-induced tissue fibrosis was determined by collagen contents, while the hepatic injury was analyzed microscopically. Serum aspartate aminotransferase (AST), alanine aminotransferase (ALT) levels and lactate dehydrogenase (LDH) levels were determined to assess liver function and tissue damage, respectively. Pro-inflammatory cytokines; TNF-alpha, IL-1beta and IL-6 were also assayed in plasma samples. RESULTS In the saline-treated BDL group, hepatic MDA levels, MPO activity and collagen content were increased (p<0.001), suggesting oxidative organ damage, as confirmed histologically. In the ghrelin-treated BDL group, however, all of the oxidant responses were reversed significantly (p<0.05-p<0.001). Serum AST, ALT, LDH levels, and cytokines were elevated in the BDL group as compared to the control group, while this increase was significantly decreased by ghrelin treatment. CONCLUSION Owing to the anti-inflammatory and anti-oxidant effect as demonstrated in our study, it is possible to speculate that exogenously administered ghrelin may possess an antifibrotic effect against biliary obstruction-induced liver fibrosis. Thus, it seems likely that ghrelin may be of potential therapeutic value in protecting the liver fibrosis and oxidative injury due to biliary obstruction.
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Affiliation(s)
- Sevgin Ozlem Işeri
- Marmara University, School of Medicine, Department of Physiology, Haydarpaşa, Istanbul 34668, Turkey
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