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Kilavuz H, Turan U, Yoldas A, Tolun FI, Tanriverdi B, Yaylali A, Yaman A, Yener MK, Irkorucu O. The effect of Farnesoid X receptor agonist tropifexor on liver damage in rats with experimental obstructive jaundice. Acta Cir Bras 2021; 36:e360902. [PMID: 34818403 PMCID: PMC8555997 DOI: 10.1590/acb360902] [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: 05/02/2021] [Accepted: 08/05/2021] [Indexed: 11/25/2022] Open
Abstract
Purpose: To investigate experimentally the effects of Tropifexor, a farnesoid X
receptor agonist, on liver injury in rats with obstructive jaundice. Methods: Forty healthy Wistar albino female rats were divided randomly in selected
groups. These groups were the sham group, control group, vehicle solution
group, Ursodeoxycholic acid group and Tropifexor group. Experimental
obstructive jaundice was created in all groups, except the sham one. In the
blood samples obtained, aspartate transaminase (AST), alanine transaminase
(ALT), alkaline phosphatase (ALP), gamma-glutamyl transferase (GGT), total
bilirubin and direct bilirubin levels were established and recorded.
Additionally, liver malondialdehyde, myeloperoxidase and catalase enzyme
activity in the tissue samples were studied. Histopathological analysis was
also performed. Results: No statistical difference was found between the control group and the
Tropifexor group when AST, ALT and ALP values were compared. However, it was
found that the Tropifexor group had statistically significant decreases in
the values of GGT, total bilirubin and direct bilirubin (p < 0.05).
Additionally, Tropifexor decreased the median values of malondialdehyde and
myeloperoxidase, but this difference was not statistically significant
compared to the control group. Finally, the Tropifexor group was
statistically significant in recurring histopathological liver damage
indicators (p < 0.05). Conclusions: Tropifexor reduced liver damage due to obstructive jaundice.
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A protective effect of curcumin on cardiovascular oxidative stress indicators in systemic inflammation induced by lipopolysaccharide in rats. Biochem Biophys Rep 2021; 25:100908. [PMID: 33506115 PMCID: PMC7815660 DOI: 10.1016/j.bbrep.2021.100908] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 12/31/2020] [Accepted: 01/06/2021] [Indexed: 12/25/2022] Open
Abstract
Objective Inflammation has been considered as an important factor in cardiovascular diseases (CVD). Curcumin has been well known for its anti-inflammatory effects. In current research, protective effect of curcumin on cardiovascular oxidative stress indicators in systemic inflammation induced by lipopolysaccharide (LPS) was investigated in rats. Material and methods The animals were divided into five groups and received the treatments during two weeks [1]: Control in which vehicle was administered instead of curcumin and saline was injected instead of LPS [2], LPS group in which vehicle of curcumin plus LPS (1 mg/kg) was administered [3-5], curcumin groups in them three doses of curcumin (5, 10 and 15 mg/kg) before LPS were administered. Results Administration of LPS was followed by an inflammation status presented by an increased level of white blood cells (WBC) (p < 0.001). An oxidative stress status was also occurred after LPS injection which was presented by an increased level of malondialdehyde (MDA) while, a decrease in thiols, superoxide dismutase (SOD) and catalase(CAT) in all heart, aorta and serum (p < 0.001). The results also showed that curcumin decreased WBC (doses: 10 and 15 mg/kg) (p < 0.001) accompanying with a decrease in MDA (P < 0.01 and P < 0.001). Curcumin also improved the thiols and the activities of SOD and catalase (P < 0.05, P < 0.01 and P < 0.001). Conclusion Based on our findings, curcumin can ameliorates oxidative stress and inflammation induced by LPS in rats to protect the cardiovascular system. The aim of the present study was to investigate the cardiovascular protective effects of curcumin in lipopolysaccharide (LPS) challenged rats Lipopolysaccharide (LPS) induced inflammation model in rats LPS injection was followed by inflammation and induced oxidative stress status in the serum, aorta and heart. Administration of curcumin attenuated oxidative stress and inflammation in the serum, aorta and heart tissues induced by LPS.
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Doğanyiğit Z, Okan A, Kaymak E, Pandır D, Silici S. Investigation of protective effects of apilarnil against lipopolysaccharide induced liver injury in rats via TLR 4/ HMGB-1/ NF-κB pathway. Biomed Pharmacother 2020; 125:109967. [DOI: 10.1016/j.biopha.2020.109967] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/20/2020] [Accepted: 01/26/2020] [Indexed: 02/07/2023] Open
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Yu G, Liu Q, Dong X, Tang K, Li B, Liu C, Zhang W, Wang Y, Jin Y. Inhibition of inflammation using diacerein markedly improved renal function in endotoxemic acute kidney injured mice. Cell Mol Biol Lett 2018; 23:38. [PMID: 30140293 PMCID: PMC6097202 DOI: 10.1186/s11658-018-0107-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Accepted: 08/06/2018] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Inflammation is an important pathogenic component of endotoxemia-induced acute kidney injury (AKI), finally resulting in renal failure. Diacerein is an interleukin-1β (IL-1β) inhibitor used for osteoarthritis treatment by exerting anti-inflammatory effects. This study aims to investigate the effects of diacerein on endotoxemia-induced AKI. METHODS Male C57BL/6 mice were intraperitoneally injected with lipopolysaccharide (LPS, 10 mg/kg) for 24 h prior to diacerein treatment (15 mg/kg/day) for another 48 h. Mice were examined by histological, molecular and biochemical approaches. RESULTS LPS administration showed a time-dependent increase of IL-1β expression and secretion in kidney tissues. Diacerein treatment normalized urine volume and osmolarity, reduced blood urea nitrogen (BUN), fractional excretion of sodium (FENa), serum creatinine and osmolarity, and protected renal function in an endotoxemic AKI mice model. In the histopathologic study, diacerein also improved renal tubular damage such as necrosis of the tubular segment. Moreover, diacerein inhibited LPS-induced increase of inflammatory cytokines, such as IL-1β, tumor necrosis factor-α, monocyte chemoattractant protein-1 and nitric oxide synthase 2. In addition, LPS administration markedly decreased aquaporin 1 (AQP1), AQP2, AQP3, Na,K-ATPase α1, apical type 3 Na/H exchanger and Na-K-2Cl cotransporter expression in the kidney, which was reversed by diacerein treatment. We also found that diacerein or IL-1β inhibition prevented the secretion of inflammatory cytokines and the decrease of AQP and sodium transporter expression induced by LPS in HK-2 cells. CONCLUSION Our study demonstrates for the first time that diacerein improves renal function efficiently in endotoxemic AKI mice by suppressing inflammation and altering tubular water and sodium handing. These results suggest that diacerein may be a novel therapeutic agent for the treatment of endotoxemic AKI.
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Affiliation(s)
- Guangzhe Yu
- Department of Emergency Surgery, The 1st Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province China
| | - Qian Liu
- Department of Laboratory Diagnosis, The 1st Affiliated Hospital of Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, 150001 Heilongjiang Province People’s Republic of China
| | - Xuening Dong
- Department of Laboratory Diagnosis, The 1st Affiliated Hospital of Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, 150001 Heilongjiang Province People’s Republic of China
| | - Kaihong Tang
- Department of Laboratory Diagnosis, The 1st Affiliated Hospital of Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, 150001 Heilongjiang Province People’s Republic of China
| | - Bohui Li
- Department of Laboratory Diagnosis, The 1st Affiliated Hospital of Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, 150001 Heilongjiang Province People’s Republic of China
| | - Chunmei Liu
- Department of Laboratory Diagnosis, The 1st Affiliated Hospital of Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, 150001 Heilongjiang Province People’s Republic of China
| | - Wenzheng Zhang
- Department of Laboratory Diagnosis, The 1st Affiliated Hospital of Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, 150001 Heilongjiang Province People’s Republic of China
| | - Yiduo Wang
- Department of Laboratory Diagnosis, The 1st Affiliated Hospital of Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, 150001 Heilongjiang Province People’s Republic of China
| | - Yingyu Jin
- Department of Laboratory Diagnosis, The 1st Affiliated Hospital of Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, 150001 Heilongjiang Province People’s Republic of China
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Zhang J, Yang S, Chen F, Li H, Chen B. Ginkgetin aglycone ameliorates LPS-induced acute kidney injury by activating SIRT1 via inhibiting the NF-κB signaling pathway. Cell Biosci 2017; 7:44. [PMID: 28852469 PMCID: PMC5567569 DOI: 10.1186/s13578-017-0173-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 08/17/2017] [Indexed: 11/18/2022] Open
Abstract
Background Ginkgetin aglycone (GA), a novel Ginkgo biloba extract (GBE) by acid hydrolysis and recrystallization, is characterized by higher liposolubility and antioxidation than classical GBEs. There is no study depicting the functional role of GA in acute kidney injury (AKI). Here, we firstly reported the protective effect of GA on lipopolysaccharide (LPS)-induced AKI and its underlying mechanism. Methods ELISA analysis was applied to measure plasma level of TNF-α and IL-6, and NF-κB activity in kidney homogenate. Renal function analysis was performed by detecting serum concentration of Kim-1 and urine level of BUN. Cell apoptosis in kidney tissues was detected by TUNEL assay and caspase-3 activity assay. qRT-PCR was conducted to determine mRNA expression of TNF-α, IL-6 and IκBα. Western blot was carried out to confirm expression of p-IκBα, SIRT1, and iNOS. Results GA administration protected mice from LPS-induced AKI by attenuating inflammatory response, renal injury, as well as tubular apoptosis both in vivo. GA suppressed inflammatory response induced by LPS in HK-2 cells. Moreover, GA upregulated SIRT1 expression and blocked the NF-κB signaling pathway in LPS-induced AKT in vivo and vitro. Furthermore, suppression of SIRT1 abated the inhibitory effect of GA on LPS-induced inflammatory response and renal injury. Conclusions GA prevented LPS-induced AKI by activating SIRT1 via inhibiting the NF-κB signaling pathway, providing new insights into the function and molecular mechanism of GA in AKI. Therefore, GA may be a promising therapeutic agent for the treatment of septic AKI.
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Affiliation(s)
- Junwei Zhang
- Department of Nephrology, Huaihe Hospital of Henan University, No. 115, Gulou District, Kaifeng, 475000 China
| | - Suxia Yang
- Department of Nephrology, Huaihe Hospital of Henan University, No. 115, Gulou District, Kaifeng, 475000 China
| | - Fang Chen
- Department of Nephrology, Huaihe Hospital of Henan University, No. 115, Gulou District, Kaifeng, 475000 China
| | - Huicong Li
- Department of Nephrology, Huaihe Hospital of Henan University, No. 115, Gulou District, Kaifeng, 475000 China
| | - Baoping Chen
- Department of Nephrology, Huaihe Hospital of Henan University, No. 115, Gulou District, Kaifeng, 475000 China
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Xin SB, Yan H, Ma J, Sun Q, Shen L. Protective Effects of Luteolin on Lipopolysaccharide-Induced Acute Renal Injury in Mice. Med Sci Monit 2016; 22:5173-5180. [PMID: 28029146 PMCID: PMC5215379 DOI: 10.12659/msm.898177] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Background Sepsis can cause serious acute kidney injury in bacterium-infected patients, especially in intensive care patients. Luteolin, a bioactive flavonoid, has renal protection and anti-inflammatory effects. This study aimed to investigate the effect and underlying mechanism of luteolin in attenuating lipopolysaccharide (LPS)-induced renal injury. Material/Methods ICR mice were treated with LPS (25 mg/kg) with or without luteolin pre-treatment (40 mg/kg for three days). The renal function, histological changes, degree of oxidative stress, and tubular apoptosis in these mice were examined. The effects of luteolin on LPS-induced expression of renal tumor necrosis factor-α (TNF-α), NF-κB, MCP-1, ICAM-1, and cleaved caspase-3 were evaluated. Results LPS resulted in rapid renal damage of mice, increased level of blood urea nitrogen (BUN), and serum creatinine (Scr), tubular necrosis, and increased oxidative stress, whereas luteolin pre-treatment could attenuate this renal damage and improve the renal functions significantly. Treatment with LPS increased TNF-α, NF-κB, IL-1β, cleaved caspase-3, MCP-1, and ICAM-1 expression, while these disturbed expressions were reversed by luteolin pre-treatment. Conclusions These results indicate that luteolin ameliorates LPS-mediated nephrotoxicity via improving renal oxidant status, decreasing NF-κB activation and inflammatory and apoptosis factors, and then disturbing the expression of apoptosis-related proteins.
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Affiliation(s)
- Shao-Bin Xin
- Department of Intensive Care Unit, Tianjin Union Medicine Center, Tianjin, China (mainland)
| | - Hao Yan
- Department of Oncology, Tianjin Union Medicine Center, Tianjin, China (mainland)
| | - Jing Ma
- Department of Integrated Chinese and Western Medicine, Tianjin Anding Hosptial, Tianjin, China (mainland)
| | - Qiang Sun
- Department of Intensive Care Unit, Tianjin Union Medicine Center, Tianjin, China (mainland)
| | - Li Shen
- Department of Intensive Care Unit, Tianjin Union Medicine Center, Tianjin, China (mainland)
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Kaya O, Koca YS, Barut İ, Baspinar S, Sabuncuoglu MZ. L-carnitine reduces acute lung injury in experimental biliary obstruction. Saudi Med J 2016; 36:1046-52. [PMID: 26318460 PMCID: PMC4613627 DOI: 10.15537/smj.2015.9.12206] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
OBJECTIVES To investigate the protective effects of L-carnitine (LC) on lungs in an experimental obstructive jaundice (OJ) model. METHODS This was conducted for 2 months between May 2011 and July 2011 at Suleyman Demirel University School of Medicine Experimental and Clinical Research Center, Isparta, Turkey. Thirty-eight Wistar-Albino rats with an average weight of 250-300 g were divided into 3 groups of control, OJ, and OJ + L-carnitine treatment (LCT). L-carnitine was injected intravenously into the tail vein at a dose of 50 mg/kg/day for 10 days to the LCT group. Animals were sacrificed 10 days later. Enzyme levels were measured in the lung tissue; malondialdehyde, myeloperoxidase (MPO), glutathione peroxidase (GSH-Px), catalase, and superoxide dismutase. Tumor necrosis factor-alfa, interleukin 6 (IL-6), IL-8, and C-reactive protein levels were studied in plasma samples. Histopathological changes in the lungs were examined. RESULTS There was a decreased in GSH-Px, MPO, and IL-8 levels (p less than 0.05) in the LCT group. The histopathological examination showed that neutrophil leukocyte infiltration and edema formation decreased and destruction of lung parenchyma disappeared following the treatment with LC (p less than 0.05). CONCLUSION L-carnitine has a protective effect against lung damage due to experimental obstructive jaundice, possibly by altering anticytokine and antioxidant activity, and by decreasing the neutrophil migration.
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Affiliation(s)
- Ozgur Kaya
- Department of General Surgery, Medical Doctor of Yenimahalle State Hospital, Ankara, Turkey. E-mail.
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Supplementation with n-3 polyunsaturated fatty acids to lipopolysaccharide-induced rats improved inflammation and functional properties of renal Na,K-ATPase. Nutr Res 2013; 33:772-9. [DOI: 10.1016/j.nutres.2013.06.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Revised: 06/05/2013] [Accepted: 06/13/2013] [Indexed: 11/17/2022]
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Chen C, Yu X, Lu H, Xiao D, Mao W, Li L. Antioxidant protective effects of lactitol against endotoxemia in patients with chronic viral hepatitis. Mol Med Rep 2012; 7:401-5. [PMID: 23165913 DOI: 10.3892/mmr.2012.1188] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Accepted: 08/16/2012] [Indexed: 11/06/2022] Open
Abstract
Although antiviral drugs are widely used in the clinic, progression to liver cirrhosis and hepatocellular carcinoma cannot yet be entirely prevented. The aim of this study was to determine the effects of lactitol in chronic viral hepatitis patients with endotoxemia. Ninety-four patients with chronic viral hepatitis were separated into two groups based on plasma endotoxin levels: one group with endotoxemia (≥ 45 ng/l, n=60) and one group without endotoxemia (<45 ng/l, n=34). Sixty patients with gut-derived endotoxemia were randomly and evenly divided into a lactitol treatment group and a control group. Plasma endotoxin levels in patients with chronic viral hepatitis exhibited a negative correlation with superoxide dismutase (SOD) activity (P<0.001) and a positive correlation with levels of malondialdehyde (MDA) (P<0.001). The levels of SOD in the lactitol-treated group increased (P<0.01), while the levels of MDA decreased (P<0.01). Plasma endotoxin levels decreased (P<0.01) and the number of lactobacilli and bifidobacteria in the intestinal tract increased (P<0.01 for all). These results suggest that lactitol administration is capable of reducing injury caused by oxidants through regulating intestinal flora and decreasing gut-derived endotoxemia in patients with chronic viral hepatitis.
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Affiliation(s)
- Chunlei Chen
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, P.R. China
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Lipid-induced peroxidation in the intestine is involved in glucose homeostasis imbalance in mice. PLoS One 2011; 6:e21184. [PMID: 21698161 PMCID: PMC3116876 DOI: 10.1371/journal.pone.0021184] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2010] [Accepted: 05/22/2011] [Indexed: 12/03/2022] Open
Abstract
Background Daily variations in lipid concentrations in both gut lumen and blood are detected by specific sensors located in the gastrointestinal tract and in specialized central areas. Deregulation of the lipid sensors could be partly involved in the dysfunction of glucose homeostasis. The study aimed at comparing the effect of Medialipid (ML) overload on insulin secretion and sensitivity when administered either through the intestine or the carotid artery in mice. Methodology/Principal Findings An indwelling intragastric or intracarotid catheter was installed in mice and ML or an isocaloric solution was infused over 24 hours. Glucose and insulin tolerance and vagus nerve activity were assessed. Some mice were treated daily for one week with the anti-lipid peroxidation agent aminoguanidine prior to the infusions and tests. The intestinal but not the intracarotid infusion of ML led to glucose and insulin intolerance when compared with controls. The intestinal ML overload induced lipid accumulation and increased lipid peroxidation as assessed by increased malondialdehyde production within both jejunum and duodenum. These effects were associated with the concomitant deregulation of vagus nerve. Administration of aminoguanidine protected against the effects of lipid overload and normalized glucose homeostasis and vagus nerve activity. Conclusions/Significance Lipid overload within the intestine led to deregulation of gastrointestinal lipid sensing that in turn impaired glucose homeostasis through changes in autonomic nervous system activity.
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Abstract
Peroxynitrite is a reactive oxidant produced from nitric oxide and superoxide, which reacts with proteins, lipids, and DNA, and promotes cytotoxic and proinflammatory responses. Here, we overview the role of peroxynitrite in various forms of circulatory shock. Immunohistochemical and biochemical evidences demonstrate the production of peroxynitrite in various experimental models of endotoxic and hemorrhagic shock both in rodents and in large animals. In addition, biological markers of peroxynitrite have been identified in human tissues after circulatory shock. Peroxynitrite can initiate toxic oxidative reactions in vitro and in vivo. Initiation of lipid peroxidation, direct inhibition of mitochondrial respiratory chain enzymes, inactivation of glyceraldehyde-3-phosphate dehydrogenase, inhibition of membrane Na+/K+ ATPase activity, inactivation of membrane sodium channels, and other oxidative protein modifications contribute to the cytotoxic effect of peroxynitrite. In addition, peroxynitrite is a potent trigger of DNA strand breakage, with subsequent activation of the nuclear enzyme poly(ADP-ribose) polymerase, which promotes cellular energetic collapse and cellular necrosis. Additional actions of peroxynitrite that contribute to the pathogenesis of shock include inactivation of catecholamines and catecholamine receptors (leading to vascular failure) and endothelial and epithelial injury (leading to endothelial and epithelial hyperpermeability and barrier dysfunction), as well as myocyte injury (contributing to loss of cardiac contractile function). Neutralization of peroxynitrite with potent peroxynitrite decomposition catalysts provides cytoprotective and beneficial effects in rodent and large-animal models of circulatory shock.
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Stabile AM, Moreto V, Antunes-Rodrigues J, Carnio EC. Central but not systemic inhibition of inducible nitric oxide synthase modulates oxytocin release during endotoxemic shock. Peptides 2010; 31:706-11. [PMID: 19932725 DOI: 10.1016/j.peptides.2009.11.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2009] [Revised: 11/05/2009] [Accepted: 11/08/2009] [Indexed: 11/30/2022]
Abstract
Previous studies have shown that immunological challenges as lipopolysaccharide (LPS) administration increases plasma oxytocin (OT) concentration. Nitric oxide (NO), a free radical gas directly related to the immune system has been implicated in the central modulation of neuroendocrine adaptive responses to immunological stress. This study aimed to test the hypothesis that the NO pathway participates in the control of OT release induced by LPS injection. For this purpose, adult male Wistar rats received bolus intravenous (i.v.) injection of LPS, preceded or not by i.v. or intracerebroventricular (i.c.v.) injections of aminoguanidine (AG), a selective inducible nitric oxide synthase (iNOS) inhibitor. Rats were decapitated after 2, 4 and 6h of treatment, for measurement of OT by radioimmunoassay. In a separate set of experiments, mean arterial pressure (MAP) and heart rate (HR) were measured every 15 min over 6h, using a polygraph. These studies revealed that LPS reduced MAP and increased HR at 4 and 6h post-injection. LPS significantly increased plasma OT concentration at 2 and 4h post-injection. Pre-treatment with i.c.v. AG further increased plasma OT concentration and attenuated the LPS-induced decrease in MAP, however, i.v. AG failed to show similar effects. Thus, iNOS pathway may activate a central inhibitory control mechanism that attenuates OT secretion during endotoxemic shock.
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Affiliation(s)
- Angelita Maria Stabile
- Department of General and Specialized Nursing, University of São Paulo, College of Nursing, Ribeirão Preto, São Paulo, Brazil
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Mittal R, Sharma S, Chhibber S, Harjai K. Contribution of free radicals to Pseudomonas aeruginosa induced acute pyelonephritis. Microb Pathog 2008; 45:323-30. [DOI: 10.1016/j.micpath.2008.08.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2008] [Revised: 07/04/2008] [Accepted: 08/06/2008] [Indexed: 01/30/2023]
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Liver Tissue Inducible Nitric Oxide Synthase (iNOS) Expression and Lipid Peroxidation in Experimental Hepatic Ischemia Reperfusion Injury Stimulated With Lipopolysaccharide: The Role of Aminoguanidine. J Surg Res 2008; 148:214-23. [DOI: 10.1016/j.jss.2007.10.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2007] [Revised: 09/14/2007] [Accepted: 10/12/2007] [Indexed: 11/19/2022]
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