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Sodium nitrite hepatic

Karin E Eriksson, Ting Yang, Mattias Carlström, Eddie Weitzberg
Numerous studies have shown beneficial cardiovascular and metabolic effects of dietary nitrate but the release or uptake of these anions on an organ level is still poorly elucidated. Here we administered sodium nitrate in the pig and measured acute changes in release/uptake of nitrate and nitrite across several organs as well as cardiovascular and metabolic functions. In 17 anesthetized pigs multiple venous catheters and arterial ultrasonic blood flow probes were positioned. After pretreatment with the NO synthase (NOS) inhibitor l-NAME to minimize involvement of NOS-dependent nitrate/nitrite generation, the animals received bolus injections of either sodium nitrate or sodium chloride...
February 8, 2018: Nitric Oxide: Biology and Chemistry
Laila Mohamed Fadda, Hala A Attia, Nouf Mohamed Al-Rasheed, Hanaa Mahmoud Ali, Manal Aldossari
This study aimed to explore the efficiency of carnosine (Cs) and/or l-arginine (Agn) in the downregulation of apoptotic and inflammatory molecule expression and DNA damage caused hepatic injury in response to sodium nitrite (Sd)-induced hypoxia in rats. Rats were injected with Sd; Agn or/and Cs were administrated prior to Sd intoxication. Sd significantly decreased hemoglobin concentration and Bcl-2 mRNA expression, while increased expressions of apoptotic markers (Bax and caspase), tumor necrosis factor-α, nuclear factor kappa B, and C-reactive protein and the oxidative DNA damage in hepatic tissue...
December 2017: Journal of Biochemical and Molecular Toxicology
Ozlem Ozsoy, Sinem Aras, Ayse Ozkan, Hande Parlak, Burcu Gemici, Nimet Uysal, Mutay Aslan, Piraye Yargicoglu, Aysel Agar
The aim of this study was to investigate the possible toxic effects of sulfite on neurons by measuring active avoidance learning in normal and sulfite oxidase (SOX)-deficient aged rats. Twenty-four months of age Wistar rats were divided into four groups: control (C), sulfite-treated group (S), SOX-deficient group (D) and SOX-deficient + sulfite-treated group (DS). SOX deficiency was established by feeding rats with a low molybdenum (Mo) diet and adding 200 ppm tungsten (W) to their drinking water. Sulfite in the form of sodium metabisulfite (25 mg/kg) was given by gavage for six weeks...
February 2017: Toxicology Mechanisms and Methods
Guan Gui, Shan-shan Meng, Lu-juan Li, Bin Liu, Hong-xia Liang, Chao-shen Huangfu
Nitrites play multiple characteristic functions in invasion and metastasis of hepatic cancer cells, but the exact mechanism is not yet known. Cancer cells can maintain the malignant characteristics via clearance of excess mitochondria by mitophagy. The purpose of this article was to determine the roles of nitrite, reactive oxygen species (ROS) and hypoxia inducing factor 1 alpha (HIF-1 α) in mitophagy of hepatic cancer cells. After exposure of human hepatocellular carcinoma SMMC-7721 cells to a serial concentrations of sodium nitrite for 24 h under normal oxygen, the maximal cell vitality was increased by 16 mg x (-1) sodium nitrite...
January 2016: Yao Xue Xue Bao, Acta Pharmaceutica Sinica
Yili Zhao, Peter Zhou, Baoling Liu, Ted Bambakidis, Ralph Mazitschek, Hasan B Alam, Yongqing Li
BACKGROUND: Lipopolysaccharide (LPS) has a deleterious effect on several organs, including the liver, and eventually leads to endotoxic shock and death. LPS-induced hepatotoxicity is characterized by disturbed intracellular redox balance and excessive reactive oxygen species (ROS) accumulation, leading to liver injury. We have shown that treatment with suberoylanilide hydroxamic acid (SAHA), a histone deacetylase inhibitor, improves survival in a murine model of LPS-induced shock, but the protective effect of SAHA against liver damage remains unknown...
April 2015: Journal of Surgical Research
Mohammed M H Al-Gayyar, Abdullah Alyoussef, Ahmed M Hamdan, Ahmed Abbas, Mohamed M Darweish, Amany A El-Hawwary
AIMS: Sodium nitrite is used to inhibit the growth of microorganisms and is responsible for the desirable red color of meat; however, it can be toxic in high quantities for humans and other animals. Moreover, glycogen, a branched polysaccharide, efficiently stores and releases glucose monosaccharides to be accessible for metabolic and synthetic requirements of the cell. Therefore, we examined the impact of dietary sodium nitrite and cod liver oil on liver glycogen. MAIN METHODS: Thirty-two Sprague-Dawley rats were treated daily with sodium nitrite (80 mg/kg) in the presence/absence of cod liver oil (5 ml/kg)...
January 1, 2015: Life Sciences
I O Sherif, M M Al-Gayyar
OBJECTIVES: Exposure to sodium nitrites, a food additive, at high levels has been reported to produce reactive nitrogen and oxygen species that cause dysregulation of inflammatory responses and tissue injury. In this work, we examined the impact of dietary cod liver oil on sodium nitrite-induced inflammation in rats. METHODS: Thirty-two adult male Sprague-Dawely rats were treated with 80 mg/kg sodium nitrite in presence/absence of 5 ml/kg cod liver oil. Liver sections were stained with hematoxylin/eosin...
January 2015: Redox Report: Communications in Free Radical Research
Pascal James Imperato, Gavin H Imperato
Dr Morris Greenberg was an eminent American epidemiologist who served with the New York City Department of Health for a 40 year period, from 1920 until his passing in 1960. In 1946, he became Director of the department's Bureau of Preventable Diseases. In this role, he set very high standards for outbreak and epidemic investigations joined with a commitment to scholarly research and collaboration with the city's medical centers. He received his medical degree from Columbia University College of Physicians and Surgeons and then interned at Bellevue Hospital in New York City...
August 2014: Journal of Community Health
Imam O Sherif, Mohammed M H Al-Gayyar
PURPOSE: Sodium nitrite, a food additive that is used as a color fixative and preservative for meats and fish, has been reported to have adverse health effects due to increased oxidative stress that could be harmful to different organs including the liver. Meanwhile, silymarin protects against hepatotoxicity caused by a variety of agents, on account of its antioxidative and anti-inflammatory effects. We therefore examined the impact of dietary silymarin on sodium nitrite-induced liver damage in rats...
July 2013: European Cytokine Network
Mingyao Wang, Guang Cheng, Samir S Khariwala, Dipankar Bandyopadhyay, Peter W Villalta, Silvia Balbo, Stephen S Hecht
An earlier study demonstrated that hydrolysates of all human liver DNA samples analyzed contain the DNA adduct 7-(2'-carboxyethyl)guanine (7-CEGua) with an average level of 74.6 adducts per 10(9) nucleotides. One possible source of this DNA adduct would be endogenous nitrosation of the normal pyrimidine metabolites dihydrouracil (DHU) and β-ureidopropionic acid (β-UPA), yielding the corresponding nitroso compounds N-nitrosodihydrouracil, a potent hepatocarcinogen, and N-nitroso-β-ureidopropionic acid. Another potential source would be reaction of endogenously formed acrylic acid with DNA...
October 25, 2013: Chemico-biological Interactions
Mohamed F Salama, Ahmed Abbas, Mohamed M Darweish, Amany A El-Hawwary, Mohammed M H Al-Gayyar
CONTEXT: Exposure to high levels of nitrites for a prolonged time have adverse health effects on several organs especially the liver due to oxidative properties. Meanwhile, cod liver oil has been reported to ameliorate organ dysfunction in animal models that involve oxidative stress. OBJECTIVE: Examine the impact of dietary cod liver oil on sodium nitrite-induced liver damage. MATERIALS AND METHODS: Thirty-two adult male Sprague-Dawely rats were daily treated with sodium nitrite (80 mg/kg) in presence or absence of cod liver oil (5 ml/kg)...
November 2013: Pharmaceutical Biology
Sanaa Ahmed Ali, Hanan Farouk Aly, Lilla Mohammed Faddah, Zeenat F Zaidi
The present study aims to clarify the protective effect of supplementation with some antioxidants, such as idebenone (200 mg/kg, ip), melatonin (10 mg/kg, ip) and arginine (200 mg/kg, ip) and their combination, on liver function (T. protein, albumin, alanine aminotransferase, aspartate aminotransferase and alkaline phosphatase), energetic parameters (adenosine triphosphate, adenosine diphosphate, adenosine monophosphate, inorganic phosphate, total adenylate, adenylate energy charge and potential phosphate)...
November 28, 2012: World Journal of Gastroenterology: WJG
M N Khodosovskiĭ, V V Zinchuk
The parameters of blood oxygen transport were determined in rabbits during the hepatic ischemia/reperfusion (HIR) with or without sodium nitroprusside (SNP) administration. Hepatic ischemia was induced for 30 min by a. hepatica propria clamping, reperfusion lasted 120 min. Indices of blood oxygen transport (hemoglobin-oxygen affinity index (p50), pO2, pH, pCO2, HCO3-, TCO2, ABE, etc.) and nitrite/nitrate (NO(x)) amounts were measured in blood during HIR. Animals were subdivided into two groups: 1st group--HIR; 2nd--HIR plus SNP infusion (SNP, Sigma, i...
May 2012: Rossiĭskii Fiziologicheskiĭ Zhurnal Imeni I.M. Sechenova
Thangarasu Silambarasan, Boobalan Raja
The present study was aimed to evaluate the antihypertensive effect of diosmin in deoxycorticosterone acetate (DOCA)-salt induced hypertension in male Wistar rats. Hypertension was induced in uninephrectomized rats by weekly twice subcutaneous injection of DOCA (25 mg/kg body weight) and 1% NaCl in the drinking water for six consecutive weeks. The important pathological events that occurred in DOCA-salt treated rats were significant increase in systolic, diastolic blood pressure, sodium and chloride in serum and lipid peroxidation products (thiobarbituric acid reactive substances, lipid hydroperoxides and conjugated dienes) in plasma and tissues (liver, kidney, heart and aorta) and significant decrease in serum potassium, total nitrite and nitrate levels in plasma...
March 15, 2012: European Journal of Pharmacology
Ester Correia Sarmento Rios, Ana Soares Moretti, Irineu Tadeu Velasco, Heraldo Possolo de Souza, Fatima Abatepaulo, Francisco Soriano
OBJECTIVES: In this study, we tested the hypothesis that hypertonic saline exerts anti-inflammatory effects by modulating hepatic oxidative stress in pancreatitis. INTRODUCTION: The incidence of hepatic injury is related to severe pancreatitis, and hypertonic saline reduces pancreatic injury and mortality in pancreatitis. METHODS: Wistar rats were divided into four groups: control (not subjected to treatment), untreated pancreatitis (NT, pancreatitis induced by a retrograde transduodenal infusion of 2...
2011: Clinics
Mohamed A Haidara, Mohamed D Morsy, Hesham A Abdel-Razek, Dimitri P Mikhailidis, Esma R Isenovic
Septicemia leads to oxidative stress with overproduction of reactive-oxygen species (ROS) and consumption of endogenous antioxidant enzymes. We tested a twofold hypothesis: (1) does oxidative stress (OxS) induced by sepsis acting alone or in concert with augmented inflammatory processes contributes to sepsis-related vascular dysfunction, and, (2) whether ozone (O(3)) and L-canavanine (CAV) mitigate the negative impact of the aforementioned phenomena. We investigated the relative impact of treatment with CAV and/or O(3) on vascular OxS associated vascular functional changes in septicemic rats...
September 2010: Journal of Physiology and Biochemistry
T-P Xie, Y-F Zhao, L-Q Chen, Z-J Zhu, Y Hu, Y Yuan
The objective of this study is to investigate the risk of esophageal carcinoma in a cohort with long-term occupational exposure to sodium nitrite. The method used was a retrospective cohort study. A small wood screw manufacturer was founded in 1977 and closed down in 2000. In their production process, the sodium nitrite solution was used to serve as anticorrosive and coolant fluid. One hundred sixty workers in turning and milling shops had direct exposure to sodium nitrite through skin, mouth, and airway because of lack of occupational protective knowledge (study group), whereas 255 workers from other workshops without direct contact with sodium nitrite served as control group...
January 2011: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
Hanaa A Hassan, Mokhtar I Yousef
The current study was carried out to elucidate the modulating effect of chicory (Cichorium intybus L.)-supplemented diet against nitrosamnine-induced oxidative stress and hepatotoxicity in male rats. Rats were divided into four groups and treated for 8 weeks as follow: group 1 served as control; group 2 fed on chicory-supplemented diet (10% w/w); group 3 received simultaneously nitrosamine precursors [sodium nitrite (0.05% in drinking water) plus chlorpromazine (1.7 mg/kg body weight)] and group 4 received nitrosamine precursors and fed on chicory-supplemented diet...
August 2010: Food and Chemical Toxicology
C Chandronitha, S Ananthi, G Ramakrishnan, R Lakshmisundaram, V Gayathri, Hannah R Vasanthi
The protective effect of green tea (Camellia sinensis) was tested against arsenic-induced toxicity. However, the possible role of tannins in green tea in alleviating hepatic and renal oxidative injury has also been studied. Administration of sodium arsenite (100 mg/kg/day) for 28 days in Sprague Dawley female rats resulted in significant reduction of biochemical parameters such as delta-aminolevulinic acid dehydratase (ALAD), reduced glutathione (GSH), glutathione peroxidase (GPx), superoxide dismutase (SOD) and elevation of thiobarbituric acid reactive substances (TBARS) and the index of nitrite/nitrate (NOx) levels...
September 2010: Human & Experimental Toxicology
Jeng-Dong Hsu, Shao-Hsuan Kao, Chang-Che Tu, Yi-Ju Li, Chau-Jong Wang
Solanum nigrum L. (SN) is a widespread plant and is regarded as a common relish in the east and the south of Taiwan. Our previous study has found that SN water extract (SNWE) alleviated carbon tetrachloride-induced liver damage in rats. However, the effects of SNWE on chemical-induced hepatic injury and hepatocarcinogenesis remain unclear. Therefore, this study aims to investigate the effects of SNWE on hepatic injury and hepatocarcinogenesis by using 2-acetylaminofluorene (AAF) and AAF/NaNO(2) treatment. The serum biomarkers for hepatic injury, glutamate oxaloacetate transaminase, glutamate pyruvate transaminase, and gamma-glutamyl transferase, and for hepatocarcinogenesis, alpha-fetoprotein, were determined...
September 23, 2009: Journal of Agricultural and Food Chemistry
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