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Kadam MS, Burra VLSP. S-adenosyl-l-methionine interaction signatures in methyltransferases. J Biomol Struct Dyn 2024; 42:3166-3176. [PMID: 37261836 DOI: 10.1080/07391102.2023.2217679] [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: 02/09/2023] [Accepted: 05/01/2023] [Indexed: 06/02/2023]
Abstract
The switching on or off of methylation, a change from a normal methylation to hyper or hypo methylation is implicated in many diseases that include cancers, infectious, neurodegenerative diseases and others. Methyltransferases are one of the most sought targets that have diversified for the methylation of a variety of substrates. However, without S-adenosyl-l-methionine (SAM), the universal methyl donor, the majority of the methyltransferases remain functionally inactive. In this article, we did a comprehensive analysis of all available SAM-receptor crystal structures at atom, moiety and structure levels to gain deeper insights into the structure and function of SAM. SAM demonstrated flexibility in binding to a variety of receptors irrespective of the size of the binding pockets. Further analysis of the binding pockets resulted in all SAM conformations clustering into four natural shapes. The conserved interaction analysis provides an unambiguous orientation of SAM binding to receptors which has been elusive till now. SAM peptide moiety (SPM) and SAM nucleobase moiety (SNM) show up to 89% interactions with receptors whereas only 11% interactions with SAM ribose moiety (SRM). It is found that SPM and SNM terminal atoms anchor to the highly conserved receptor subsites creating a workbench for catalysis. It is seen that every interacting atom and its position is crucial in the methyl transfer phenomenon. A very unique observation is that the methyl group of SAM does not have even one interaction with the receptor. The deep insights gained help in the design and development of novel drugs against the methyltransferases.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Mangal S Kadam
- Center for Advanced Research and Innovation in Structural Biology of Diseases (CARISBD), Department of Biotechnology, KLEF University, Vaddeswaram, Andhra Pradesh, India
| | - V L S Prasad Burra
- Center for Advanced Research and Innovation in Structural Biology of Diseases (CARISBD), Department of Biotechnology, KLEF University, Vaddeswaram, Andhra Pradesh, India
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Yang J, Shin J, Kim H, Sim Y, Cha E, Yang J. Analysis of metabolite differences between South Korean and Chinese yellow goosefish (Lophius litulon) using capillary electrophoresis time-of-flight mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1228:123863. [PMID: 37639994 DOI: 10.1016/j.jchromb.2023.123863] [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: 04/04/2023] [Revised: 08/02/2023] [Accepted: 08/19/2023] [Indexed: 08/31/2023]
Abstract
The yellow goosefish is a benthic fish that belongs to the family Lophiidae and order Lophiiformes and is distributed in the Yellow and East China Seas. This study aimed to distinguish between yellow goosefish from different geographical origins by analyzing their metabolites. Capillary electrophoresis time-of-flight mass spectrometry was used to analyze metabolite profiles in the muscle tissues of yellow goosefish to distinguish between Korean and Chinese yellow goosefish. In total, 271 putative metabolites were extracted using 50% acetonitrile in water. Principal component analysis and orthogonal partial least squares discriminant analysis (OPLS-DA) were used to distinguish different geographical origins using the metabolite profiles obtained. The R2 and Q2 values of the OPLS-DA model were 0.856 and 0.695, respectively, indicating that the model was well-fitted and had good predictability. The heat map revealed that nucleic acid and amino compounds differed between the Korean and Chinese fish, and the variable importance in the projection scores obtained from OPLS-DA showed that there were geographical differences in the primary metabolites (5'-methylthioadenosine, adenosine, uridine 5-diphosphate, guanosine 5-diphosphate, urea, homocarnosine, O-acetylcarnitine, cycloleucine, cycloleucine S-adenosylmethionine, S-adenosylhomocysteine, ethanolamine, myo-inositol 1-phosphate), which were identified as potential candidate biomarkers.
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Affiliation(s)
- Junho Yang
- Department of Food Science & Technology, Pukyong National University, Busan 48513, South Korea.
| | - Jiyoung Shin
- Department of Food Science & Technology, Pukyong National University, Busan 48513, South Korea.
| | - Hyunsuk Kim
- Department of Food Science & Technology, Pukyong National University, Busan 48513, South Korea.
| | - Yikang Sim
- Department of Food Science & Technology, Pukyong National University, Busan 48513, South Korea.
| | - Eunji Cha
- Department of Food Science & Technology, Pukyong National University, Busan 48513, South Korea.
| | - Jiyoung Yang
- Department of Food Science & Technology, Pukyong National University, Busan 48513, South Korea.
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Alcohol Use Disorder: Neurobiology and Therapeutics. Biomedicines 2022; 10:biomedicines10051192. [PMID: 35625928 PMCID: PMC9139063 DOI: 10.3390/biomedicines10051192] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 05/18/2022] [Accepted: 05/20/2022] [Indexed: 02/04/2023] Open
Abstract
Alcohol use disorder (AUD) encompasses the dysregulation of multiple brain circuits involved in executive function leading to excessive consumption of alcohol, despite negative health and social consequences and feelings of withdrawal when access to alcohol is prevented. Ethanol exerts its toxicity through changes to multiple neurotransmitter systems, including serotonin, dopamine, gamma-aminobutyric acid, glutamate, acetylcholine, and opioid systems. These neurotransmitter imbalances result in dysregulation of brain circuits responsible for reward, motivation, decision making, affect, and the stress response. Despite serious health and psychosocial consequences, this disorder still remains one of the leading causes of death globally. Treatment options include both psychological and pharmacological interventions, which are aimed at reducing alcohol consumption and/or promoting abstinence while also addressing dysfunctional behaviours and impaired functioning. However, stigma and social barriers to accessing care continue to impact many individuals. AUD treatment should focus not only on restoring the physiological and neurological impairment directly caused by alcohol toxicity but also on addressing psychosocial factors associated with AUD that often prevent access to treatment. This review summarizes the impact of alcohol toxicity on brain neurocircuitry in the context of AUD and discusses pharmacological and non-pharmacological therapies currently available to treat this addiction disorder.
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Søderstrøm S, Lie KK, Lundebye AK, Søfteland L. Beauvericin (BEA) and enniatin B (ENNB)-induced impairment of mitochondria and lysosomes - Potential sources of intracellular reactive iron triggering ferroptosis in Atlantic salmon primary hepatocytes. Food Chem Toxicol 2022; 161:112819. [PMID: 35038498 DOI: 10.1016/j.fct.2022.112819] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 01/07/2022] [Accepted: 01/10/2022] [Indexed: 12/13/2022]
Abstract
Beauvericin (BEA) and enniatin B (ENNB) are emerging mycotoxins frequently detected in plant-based fish feed. With ionophoric properties, they have shown cytotoxic potential in mammalian models. Sensitivity in fish is still largely unknown. Primary hepatocytes isolated from Atlantic salmon (Salmo salar) were used as a model and exposed to BEA and ENNB (0.05-10 μM) for 48 h. Microscopy, evaluation of cell viability, total ATP, total H2O2, total iron content, total Gpx enzyme activity, and RNA sequencing were used to characterize the toxicodynamics of BEA and ENNB. Both mycotoxins became cytotoxic at ≥ 5 μM, causing condensation of the hepatocytes followed by formation of blister-like protrusions on the cell's membrane. RNA sequencing analysis at sub-cytotoxic levels indicated BEA and ENNB exposed hepatocytes to experience increased energy expenditure, elevated oxidative stress, and iron homeostasis disturbances sensitizing the hepatocytes to ferroptosis. The present study provides valuable knowledge disclosing the toxic action of these mycotoxins in Atlantic salmon primary hepatocytes.
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Affiliation(s)
| | - Kai K Lie
- Institute of Marine Research (IMR), Bergen, Norway
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Arya P, Kumar U, Sharma S, Durgappa M, Guleria A, Raj R, Pande G, Kumar D. Targeted NMR-based serum metabolic profiling of serine, glycine and methionine in acute-on-chronic liver failure patients: Possible insights into mitochondrial dysfunction. ANALYTICAL SCIENCE ADVANCES 2021; 2:536-545. [PMID: 38715854 PMCID: PMC10989557 DOI: 10.1002/ansa.202000167] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 05/18/2021] [Accepted: 05/30/2021] [Indexed: 06/11/2024]
Abstract
BACKGROUND A recent study based on blood metabolomics analysis revealed inflammation-associated mitochondrial dysfunction as a potential mechanism underlying acute-on-chronic liver failure (ACLF) in cirrhotic patients. Serine, glycine, and methionine serve to maintain a healthy immune system and adequately sustain mitochondrial functionality in hepatocytes for regulating redox homeostasis through the production of antioxidant glutathione (GSH). Based on this, we hypothesized that the circulatory levels of serine, glycine and methionine will be altered in ACLF patients due to acute worsening of hepatic function and may provide novel insights into the mitochondrial dysfunction as well. METHODS The circulatory concentrations of serine, glycine, and methionine were estimated in the sera of 40 ACLF patients and 49 normal controls (NC) subject using 1D 1H-CPMG NMR spectra recorded at 800 MHz NMR spectrometer. The resulting metabolite concentrations were compared using unpaired Student t-test and p-value < 0.05 was considered as the criterion of statistical significance. The diagnostic potential and statistical correlations were established using receiver-operating-characteristic (ROC) curve analysis and Pearson-r method, respectively. RESULTS Circulating levels of serine and glycine were significantly decreased in ACLF patients (Ser = 23.06 ± 1.67 µM and Gly = 83.11±7.52 µM) compared to NC subjects (Ser = 55.61 ± 2.28 µM and Gly = 156.9±7.16 µM) with p-value < 0.0001, whereas those of methionine were significantly increased in ACLF (22.60 ± 2.49 µM) compared to NC subjects (=14.63 ± 0.85 µM) with p-value < 0.0015. Further, the ROC analysis yielded satisfactory sensitivity and specificity for serine, glycine, and methionine-to-glycine ratio (MGR) with area under ROC (AUROC) curve values equal to: 0.95 [95%CI = 0.91-0.99] for Ser; 0.87 [95%CI = 0.79-0.95] for Gly; and 0.90 [95%CI = 0.83-0.97] for MGR. CONCLUSION Compared to NC subjects, the sera of ACLF patients were characterized by hypermethioninemia and aberrantly decreased levels of serine and glycine suggesting mitochondrial dysfunction as the possible mechanism for disturbed redox homeostasis and therefore depressed immune system in ACLF.
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Affiliation(s)
- Payal Arya
- Centre of Biomedical Research (CBMR)Sanjay Gandhi Postgraduate Institute of Medical Sciences (SGPGIMS)LucknowUttar Pradesh226014India
| | - Umesh Kumar
- Centre of Biomedical Research (CBMR)Sanjay Gandhi Postgraduate Institute of Medical Sciences (SGPGIMS)LucknowUttar Pradesh226014India
| | - Supriya Sharma
- Department of Surgical GastroenterologySanjay Gandhi Postgraduate Institute of Medical Sciences (SGPGIMS)LucknowUttar Pradesh226014India
| | - Manjunath Durgappa
- Department of GastroenterologySanjay Gandhi Postgraduate Institute of Medical Sciences (SGPGIMS)LucknowIndia
| | - Anupam Guleria
- Centre of Biomedical Research (CBMR)Sanjay Gandhi Postgraduate Institute of Medical Sciences (SGPGIMS)LucknowUttar Pradesh226014India
| | - Ritu Raj
- Centre of Biomedical Research (CBMR)Sanjay Gandhi Postgraduate Institute of Medical Sciences (SGPGIMS)LucknowUttar Pradesh226014India
| | - Gaurav Pande
- Department of GastroenterologySanjay Gandhi Postgraduate Institute of Medical Sciences (SGPGIMS)LucknowIndia
| | - Dinesh Kumar
- Centre of Biomedical Research (CBMR)Sanjay Gandhi Postgraduate Institute of Medical Sciences (SGPGIMS)LucknowUttar Pradesh226014India
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Yan G, Li X, Yang J, Li Z, Hou J, Rao B, Hu Y, Ma L, Wang Y. Cost-Effective Production of ATP and S-Adenosylmethionine Using Engineered Multidomain Scaffold Proteins. Biomolecules 2021; 11:biom11111706. [PMID: 34827704 PMCID: PMC8616028 DOI: 10.3390/biom11111706] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/18/2021] [Accepted: 10/18/2021] [Indexed: 12/27/2022] Open
Abstract
Adenosine triphosphate (ATP) and S-adenosyl-L-methionine (SAM) are important intermediates that are widely present in living organisms. Large-scale preparation and application of ATP or SAM is limited by expensive raw materials. To lower the production costs for ATP/SAM, in this study we used strategies applying engineered multidomain scaffold proteins to synthesize ATP and SAM. An artificial scaffold protein containing CBM3 domain, IM proteins and CL-labeled proteins was assembled to form complex 1 for catalytic reactions to increase ATP production. The ATP synthesis system produced approximately 25 g/L of ATP with approximately 15 g/L of ADP and 5 g/L of AMP using 12.5 g/L of adenosine and 40 g/L of sodium hexametaphosphate reaction at 35 °C and a pH of 8.5 for 6 h. Based on the above ATP synthesis system, two CL-labeled methionine adenosyltransferases (CL9-MAT4 and CL9-MAT5) were applied to construct scaffold protein complex 2 to achieve SAM synthesis. Approximately 25 μg of MAT4 in a reaction system with 0.3 M MgCl2 catalyzed at 20 °C and a pH of 8 catalyzed 0.5 g/L of l-Met to produce approximately 0.9 g/L of SAM. Approximately 25 μg of MAT5 in a reaction system with 0.7 M MgCl2 catalyzed at 35 °C and a pH of 8 catalyzed 0.5 g/L of l-Met to produce approximately 1.2 g/L of SAM. Here, we showed that low-cost substrates can be efficiently converted into high-value additional ATP and SAM via multi-enzyme catalytic reactions by engineered multidomain scaffold proteins.
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Affiliation(s)
- Guangbo Yan
- State Key Laboratory of Biocatalysis and Enzyme, Engineering Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, Biology Faculty of Hubei University, Hubei University, Wuhan 430062, China; (G.Y.); (X.L.); (J.Y.); (Z.L.); (J.H.); (L.M.)
| | - Xia Li
- State Key Laboratory of Biocatalysis and Enzyme, Engineering Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, Biology Faculty of Hubei University, Hubei University, Wuhan 430062, China; (G.Y.); (X.L.); (J.Y.); (Z.L.); (J.H.); (L.M.)
| | - Jun Yang
- State Key Laboratory of Biocatalysis and Enzyme, Engineering Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, Biology Faculty of Hubei University, Hubei University, Wuhan 430062, China; (G.Y.); (X.L.); (J.Y.); (Z.L.); (J.H.); (L.M.)
| | - Zhongchen Li
- State Key Laboratory of Biocatalysis and Enzyme, Engineering Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, Biology Faculty of Hubei University, Hubei University, Wuhan 430062, China; (G.Y.); (X.L.); (J.Y.); (Z.L.); (J.H.); (L.M.)
| | - Jia Hou
- State Key Laboratory of Biocatalysis and Enzyme, Engineering Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, Biology Faculty of Hubei University, Hubei University, Wuhan 430062, China; (G.Y.); (X.L.); (J.Y.); (Z.L.); (J.H.); (L.M.)
| | - Ben Rao
- National Biopesticide Engineering Technology Research Center, Hubei Biopesticide Engineering Research Center, Hubei Academy of Agricultural Sciences, Biopesticide Branch of Hubei Innovation Centre of Agricultural Science and Technology, Wuhan 430064, China;
| | - Yong Hu
- Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Key Laboratoy of Industrial Microbiology, National “111” Center for Cellular Regulation and Molecular Pharmaceutics, Hubei Research Center of Food Fermentation Engineering and Technology, Hubei University of Technology, Wuhan 430062, China;
| | - Lixin Ma
- State Key Laboratory of Biocatalysis and Enzyme, Engineering Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, Biology Faculty of Hubei University, Hubei University, Wuhan 430062, China; (G.Y.); (X.L.); (J.Y.); (Z.L.); (J.H.); (L.M.)
| | - Yaping Wang
- State Key Laboratory of Biocatalysis and Enzyme, Engineering Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, Biology Faculty of Hubei University, Hubei University, Wuhan 430062, China; (G.Y.); (X.L.); (J.Y.); (Z.L.); (J.H.); (L.M.)
- Correspondence:
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Klimova EM, Drozdova LA, Lavinska OV, Bychenko EA, Kot YH, Kordon TI. Hepatosplenomegaly in liver cirrhosis is caused by reactive oxygen species formation, an increase in apoptosis and autophagy, and pronounced autoimmune reactions. REGULATORY MECHANISMS IN BIOSYSTEMS 2021. [DOI: 10.15421/022156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Various factors of infectious and toxic genesis can lead to the liver cirrhosis, often accompanied by complications such as recurrent bleeding due to portal hypertension against the background of hepatosplenomegaly. Metabolic changes and disturbances in immunoreactivity occur in the liver and spleen. To substantiate the choice of personalized treatment tactics for patients with hepatosplenomegaly, we investigated individual metabolic predictors and immunopathological processes in patients with: liver cirrhosis and hepatitis B (HBV) and/or hepatitis C (HCV) viruses (I group, n = 52); with herpes viruses CMV (cytomegalovirus) and EBV (Epstein-Barr virus) (II group, n = 48), and with splenomegaly and frequent recurrent bleeding associated with hereditary enzymopathies (III group, n = 15). We used the methods of immunoturbidimetry; enzyme immunoassay; light, fluorescence and confocal microscopy. In group I (HBV/HCV), we revealed a decrease in the C4 component; a significant increase in the phagocytic index and phagocytic number, a reduced number of active phagocytes and the digestion index; a decrease in the IL-1β content and an increase in IL-18 and IL-6. In group II (CMV/EBV), we revealed a high activity of the C3 and a low activity of the C4 component against the background of a high level of ROS in neutrophils; the antineutrophil antibodies (ANCA) formation in 85.7% of patients (71.4% –perinuclear antibodies (pANCA) to myeloperoxidase; 14.3% – cytoplasmic antibodies (CANCA) to proteinase 3). Also, in group II, an increased level of pro-inflammatory cytokines IFN-γ, IL-1β, TNF-α, IL-18 and anti-inflammatory IL-6 was detected. Changes in links of immunity in II group led to the formation of autoimmune reactions in 64.7% of patients, which was expressed in the development of a broad range of antinuclear antibodies ANA (11 specificities, including ANA to chromatin and chromatin-associated proteins, to proteins cytoskeleton, enzymes and enzyme complexes). In group III, we revealed a low absorption capacity of neutrophils, a high frequency of antineutrophil antibodies pANCA occurrence and cANCA (in 67.2% of the examined), and low concentration of TNF-α. The developed model of the stepwise change of immunological markers makes it possible to substantiate the choice of a complex targeted treatment, including antiviral and immunotropic therapy.
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S-Adenosylmethionine Deficiency and Brain Accumulation of S-Adenosylhomocysteine in Thioacetamide-Induced Acute Liver Failure. Nutrients 2020; 12:nu12072135. [PMID: 32709137 PMCID: PMC7400803 DOI: 10.3390/nu12072135] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/09/2020] [Accepted: 07/15/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Acute liver failure (ALF) impairs cerebral function and induces hepatic encephalopathy (HE) due to the accumulation of neurotoxic and neuroactive substances in the brain. Cerebral oxidative stress (OS), under control of the glutathione-based defense system, contributes to the HE pathogenesis. Glutathione synthesis is regulated by cysteine synthesized from homocysteine via the transsulfuration pathway present in the brain. The transsulfuration-transmethylation interdependence is controlled by a methyl group donor, S-adenosylmethionine (AdoMet) conversion to S-adenosylhomocysteine (AdoHcy), whose removal by subsequent hydrolysis to homocysteine counteract AdoHcy accumulation-induced OS and excitotoxicity. METHODS Rats received three consecutive intraperitoneal injections of thioacetamide (TAA) at 24 h intervals. We measured AdoMet and AdoHcy concentrations by HPLC-FD, glutathione (GSH/GSSG) ratio (Quantification kit). RESULTS AdoMet/AdoHcy ratio was reduced in the brain but not in the liver. The total glutathione level and GSH/GSSG ratio, decreased in TAA rats, were restored by AdoMet treatment. CONCLUSION Data indicate that disturbance of redox homeostasis caused by AdoHcy in the TAA rat brain may represent a deleterious mechanism of brain damage in HE. The correction of the GSH/GSSG ratio following AdoMet administration indicates its therapeutic value in maintaining cellular redox potential in the cerebral cortex of ALF rats.
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Colon V, Gumpenberger M. Diagnosis of hepatic lipidosis in a tiger salamander (Ambystoma tigrinum) by computed tomography. J Exot Pet Med 2020. [DOI: 10.1053/j.jepm.2020.01.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Li G, Li H, Tan Y, Hao N, Yang X, Chen K, Ouyang P. Improved S-adenosyl-l-methionine production in Saccharomyces cerevisiae using tofu yellow serofluid. J Biotechnol 2020; 309:100-106. [PMID: 31926980 DOI: 10.1016/j.jbiotec.2020.01.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 12/26/2019] [Accepted: 01/09/2020] [Indexed: 01/01/2023]
Abstract
S-adenosyl-l-methionine (SAM) has been attracting increasing attention because of its significance in the pharmaceutical industry; however, the high cost of this compound limits its application. Tofu yellow serofluid exhibits high nutritional value and is not costly; therefore, it can be utilized as a substrate in the fermentation industry. In the current study, Saccharomyces cerevisiae was cultured in the tofu yellow serofluid fermentation medium for the SAM biosynthesis. The optimum tofu yellow serofluid fermentation medium contained 70 g/L of glucose, 30 % of yellow serofluid, 20 g/L of l-methionine, and 2.5 g/L of ammonium citrate. Under these conditions, the optimum feeding strategy was established. The results revealed that the dry cell weight (DCW) reached 123.1 g/L, the maximum production of SAM was 16.14 g/L, the highest SAM productivity reached 1.048 g/L/h, and SAM content was determined at 131.1 mg/g DCW. Furthermore, addition of tofu yellow serofluid reduced the average cost of SAM by 31.9 % to compare with the culture process without addition of tofu yellow serofluid. Thus, the tofu yellow serofluid fermentation medium improved the production of SAM and significantly reduced the production costs.
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Affiliation(s)
- Ganlu Li
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211816, China
| | - Hui Li
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211816, China
| | - Yuyan Tan
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211816, China
| | - Ning Hao
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211816, China.
| | - Xuelian Yang
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology & Business University (BTBU), Beijing, 100048, China.
| | - Kequan Chen
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211816, China
| | - Pingkai Ouyang
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211816, China
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Metabolic engineering of Lactococcus lactis for high level accumulation of glutathione and S-adenosyl-l-methionine. World J Microbiol Biotechnol 2019; 35:185. [DOI: 10.1007/s11274-019-2759-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 11/05/2019] [Indexed: 10/25/2022]
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Abstract
Multiple factors involving the methionine salvage pathway (MSP) and polyamine biosynthesis have been found to be involved in cancer cell proliferation, migration, invasion and metastasis. This review summarizes the relationships of the MSP enzyme acireductone dioxygenase (ARD), the ADI1 gene encoding ARD and other gene products (ADI1GP) with carcinomas and carcinogenesis. ARD exhibits structural and functional differences depending upon the metal bound in the active site. In the penultimate step of the MSP, the Fe2+ bound form of ARD catalyzes the on-pathway oxidation of acireductone leading to methionine, whereas Ni2+ bound ARD catalyzes an off-pathway reaction producing methylthiopropionate and carbon monoxide, a biological signaling molecule and anti-apoptotic. The relationship between ADI1GP, MSP and polyamine synthesis are discussed, along with possible role(s) of metal in modulating the cellular behavior of ADI1GP and its interactions with other cellular components.
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Qamar N, Sultan H, Khan KM, Azmat R, Naz R, Hameed A, Lateef M. 8‐Hydroxyquinoline‐Methionine Mixed Ligands Metal Complexes: Preparation and Their Antioxidant Activity. ChemistrySelect 2019. [DOI: 10.1002/slct.201803882] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Noshab Qamar
- Department of ChemistryUniversity of Karachi Karachi Pakistan
| | - Hira Sultan
- Department of ChemistryNED University of Engineering and Technology Karachi Pakistan
| | - Khalid Mohammed Khan
- H. E. J. Research Institute of ChemistryInternational Center of Chemical and Biological Sciences (ICCBS)University of Karachi Karachi- 75270 Pakistan
- Department of Clinical PharmacyInstitute for Research and Medical Consultations (IRMC)Imam Abdulrahman Bin Faisal University P.O. Box 31441 Dammam Saudi Arabia
| | - Rafia Azmat
- Department of ChemistryUniversity of Karachi Karachi Pakistan
| | - Raheela Naz
- Department of ChemistryUniversity of Karachi Karachi Pakistan
| | - Abdul Hameed
- H. E. J. Research Institute of ChemistryInternational Center of Chemical and Biological Sciences (ICCBS)University of Karachi Karachi- 75270 Pakistan
- Department of ChemistryForman Christian College (A Chartered University) Ferozepur Road, Lahore- 54600 Pakistan
| | - Mehreen Lateef
- MDRLBaharia University of Medical & Dental College Karachi Pakistan
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Brzački V, Mladenović B, Dimić D, Jeremić L, Živanović D, Djukić D, Stojanović NM, Sokolović DT. Comparison between the effects of selenomethionine and S-adenosylmethionine in preventing cholestasis-induced rat liver damage. Amino Acids 2019; 51:795-803. [DOI: 10.1007/s00726-019-02716-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Accepted: 02/28/2019] [Indexed: 01/09/2023]
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Hou Q, Li C, Liu Y, Li W, Chen Y, Siqinbateer, Bao Y, saqila W, Zhang H, Menghe B, Sun Z. Koumiss consumption modulates gut microbiota, increases plasma high density cholesterol, decreases immunoglobulin G and albumin. J Funct Foods 2019. [DOI: 10.1016/j.jff.2018.11.023] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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16
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Kouam AF, Yuan F, Njayou FN, He H, Tsayem RF, Oladejo BO, Song F, Moundipa PF, Gao GF. Induction of Mkp-1 and Nuclear Translocation of Nrf2 by Limonoids from Khaya grandifoliola C.DC Protect L-02 Hepatocytes against Acetaminophen-Induced Hepatotoxicity. Front Pharmacol 2017; 8:653. [PMID: 28974930 PMCID: PMC5610691 DOI: 10.3389/fphar.2017.00653] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 09/01/2017] [Indexed: 12/11/2022] Open
Abstract
Drug-induced liver injury (DILI) is a major clinical problem where natural compounds hold promise for its abrogation. Khaya grandifoliola (Meliaceae) is used in Cameroonian traditional medicine for the treatment of liver related diseases and has been studied for its hepatoprotective properties. Till date, reports showing the hepatoprotective molecular mechanism of the plant are lacking. The aim of this study was therefore to identify compounds from the plant bearing hepatoprotective activity and the related molecular mechanism by assessing their effects against acetaminophen (APAP)-induced hepatotoxicity in normal human liver L-02 cells line. The cells were exposed to APAP (10 mM) or co-treated with phytochemical compounds (40 μM) over a period of 36 h and, biochemical and molecular parameters assessed. Three known limonoids namely 17-epi-methyl-6-hydroxylangolensate, 7-deacetoxy-7-oxogedunin and deacetoxy-7R-hydroxygedunin were identified. The results of cells viability and membrane integrity, reactive oxygen species generation and lipid membrane peroxidation assays, cellular glutathione content determination as well as expression of cytochrome P450 2E1 demonstrated the protective action of the limonoids. Immunoblotting analysis revealed that limonoids inhibited APAP-induced c-Jun N-terminal Kinase phosphorylation (p-JNK), mitochondrial translocation of p-JNK and Bcl2-associated X Protein, and the release of Apoptosis-inducing Factor into the cytosol. Interestingly, limonoids increased the expression of Mitogen-activated Protein Kinase Phosphatase (Mkp)-1, an endogenous inhibitor of JNK phosphorylation and, induced the nuclear translocation of Nuclear Factor Erythroid 2-related Factor-2 (Nrf2) and decreased the expression of Kelch-like ECH-associated Protein-1. The limonoids also reversed the APAP-induced decreased mRNA levels of Catalase, Superoxide Dismutase-1, Glutathione-S-Transferase and Methionine Adenosyltransferase-1A. The obtained results suggest that the isolated limonoids protect L-02 hepatocytes against APAP-induced hepatotoxicity mainly through increase expression of Mkp-1 and nuclear translocation of Nrf2. Thus, these compounds are in part responsible of the hepatoprotective activity of K. grandifoliola and further analysis including in vivo and toxicological studies are needed to select the most potent compound that may be useful as therapeutic agents against DILI.
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Affiliation(s)
- Arnaud F Kouam
- Laboratory of Pharmacology and Toxicology, Department of Biochemistry, Faculty of Science, University of Yaoundé 1Yaoundé, Cameroon.,CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of SciencesBeijing, China
| | - Fei Yuan
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of SciencesBeijing, China
| | - Frédéric N Njayou
- Laboratory of Pharmacology and Toxicology, Department of Biochemistry, Faculty of Science, University of Yaoundé 1Yaoundé, Cameroon
| | - Hongtao He
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of SciencesBeijing, China
| | - Roméo F Tsayem
- Laboratory of Pharmacology and Toxicology, Department of Biochemistry, Faculty of Science, University of Yaoundé 1Yaoundé, Cameroon
| | - Babayemi O Oladejo
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of SciencesBeijing, China
| | - Fuhang Song
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of SciencesBeijing, China
| | - Paul F Moundipa
- Laboratory of Pharmacology and Toxicology, Department of Biochemistry, Faculty of Science, University of Yaoundé 1Yaoundé, Cameroon
| | - George F Gao
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of SciencesBeijing, China
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Yu L, Su R, Wang B, Zhang L, Zou Y, Zhang J, Gao L. Prediction of Novel Drugs for Hepatocellular Carcinoma Based on Multi-Source Random Walk. IEEE/ACM TRANSACTIONS ON COMPUTATIONAL BIOLOGY AND BIOINFORMATICS 2017; 14:966-977. [PMID: 27076463 DOI: 10.1109/tcbb.2016.2550453] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Computational approaches for predicting drug-disease associations by integrating gene expression and biological network provide great insights to the complex relationships among drugs, targets, disease genes, and diseases at a system level. Hepatocellular carcinoma (HCC) is one of the most common malignant tumors with a high rate of morbidity and mortality. We provide an integrative framework to predict novel d rugs for HCC based on multi-source random walk (PD-MRW). Firstly, based on gene expression and protein interaction network, we construct a gene-gene weighted i nteraction network (GWIN). Then, based on multi-source random walk in GWIN, we build a drug-drug similarity network. Finally, based on the known drugs for HCC, we score all drugs in the drug-drug similarity network. The robustness of our predictions, their overlap with those reported in Comparative Toxicogenomics Database (CTD) and literatures, and their enriched KEGG pathway demonstrate our approach can effectively identify new drug indications. Specifically, regorafenib (Rank = 9 in top-20 list) is proven to be effective in Phase I and II clinical trials of HCC, and the Phase III trial is ongoing. And, it has 11 overlapping pathways with HCC with lower p-values. Focusing on a particular disease, we believe our approach is more accurate and possesses better scalability.
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Zhou Z, Park S, Kim JW, Zhao J, Lee MY, Choi KC, Lim CW, Kim B. Detrimental effects of nicotine on thioacetamide-induced liver injury in mice. Toxicol Mech Methods 2017; 27:501-510. [DOI: 10.1080/15376516.2017.1323256] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Zixiong Zhou
- Biosafety Research Institute and Laboratory of Pathology, College of Veterinary Medicine, Chonbuk National University, Iksan, Republic of Korea
| | - Surim Park
- Biosafety Research Institute and Laboratory of Pathology, College of Veterinary Medicine, Chonbuk National University, Iksan, Republic of Korea
| | - Jong Won Kim
- Biosafety Research Institute and Laboratory of Pathology, College of Veterinary Medicine, Chonbuk National University, Iksan, Republic of Korea
| | - Jing Zhao
- Biosafety Research Institute and Laboratory of Pathology, College of Veterinary Medicine, Chonbuk National University, Iksan, Republic of Korea
| | - Moo-Yeol Lee
- College of Pharmacy, Dongguk University, Goyang, Gyeonggi-do, Republic of Korea
| | - Kyung Chul Choi
- Laboratory of Biochemistry and Immunology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Chae Woong Lim
- Biosafety Research Institute and Laboratory of Pathology, College of Veterinary Medicine, Chonbuk National University, Iksan, Republic of Korea
| | - Bumseok Kim
- Biosafety Research Institute and Laboratory of Pathology, College of Veterinary Medicine, Chonbuk National University, Iksan, Republic of Korea
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19
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Maghbooli Z, Hossein-Nezhad A, Ramezani M, Moattari S. Epigenetic Alterations and Exposure to Air Pollutants: Protocol for a Birth Cohort Study to Evaluate the Association Between Adverse Birth Outcomes and Global DNA Methylation. JMIR Res Protoc 2017; 6:e29. [PMID: 28232302 PMCID: PMC5344983 DOI: 10.2196/resprot.7114] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 01/22/2017] [Accepted: 01/23/2017] [Indexed: 12/17/2022] Open
Abstract
Background Prenatal exposure to air pollutants can increase the risk of adverse birth outcomes and susceptibility to a number of complex disorders later in life. Despite this general understanding, the molecular and cellular responses to air pollution exposure during early life are not completely clear. Objective The aims of this study are to test the association between air pollution and adverse pregnancy outcomes, and to determine whether the levels of maternal and cord blood and of placental DNA methylation during pregnancy predict adverse birth outcomes in polluted areas. Methods This is a birth cohort study. We will enroll pregnant healthy women attending prenatal care clinics in Tehran, Iran, who are resident in selected polluted and unpolluted regions before the 14th week of pregnancy. We will calculate the regional background levels of fine particulate matter (particles with a diameter between 2.5 and 10 μm) and nitrogen dioxide for all regions of by using data from the Tehran Air Quality Control Company. Then, we will select 2 regions as the polluted and unpolluted areas of interest. Healthy mothers living in the selected polluted and non polluted regions will be enrolled in this study. A maternal health history questionnaire will be completed at each trimester. During the first and second trimester, we will draw mothers’ blood for biochemical and DNA methylation analyses. At the time of delivery time, we will collect maternal and cord blood for biochemical, gene expression, and DNA methylation analyses. We will also record birth outcomes (the newborn’s sex, birth date, birth weight and length, gestational age, Apgar score, and level of neonatal care required). Results The project was funded in March 2016 and enrollment will be completed in August 2017. Data analysis is under way, and the first results are expected to be submitted for publication in November 2017. Conclusions We supposed that prenatal exposures to air pollutants can influence fetal reprogramming by epigenetic modifications such as DNA methylation. This could explain the association between air pollution and adverse pregnancy outcomes.
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Affiliation(s)
- Zhila Maghbooli
- Osteoporosis Research Center, Endocrinology and Metabolism Research Institute of Tehran University of Medical Sciences, Tehran, Islamic Republic Of Iran
| | - Arash Hossein-Nezhad
- Osteoporosis Research Center, Endocrinology and Metabolism Research Institute of Tehran University of Medical Sciences, Tehran, Islamic Republic Of Iran.,Department of Medicine, Section of Endocrinology, Nutrition, and Diabetes, Vitamin D, Skin and Bone Research Laboratory, Boston University Medical Center, Boston, MA, United States
| | - Majid Ramezani
- Department of Endocrinology, Baghiatallah University of Medical Sciences, Tehran, Islamic Republic Of Iran
| | - Syamak Moattari
- Osteoporosis Research Center, Endocrinology and Metabolism Research Institute of Tehran University of Medical Sciences, Tehran, Islamic Republic Of Iran.,Health Science Department, Worcester State University, Worcester, MA, United States
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20
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A genetic method to enhance the accumulation of S-adenosylmethionine in yeast. Appl Microbiol Biotechnol 2017; 101:1351-1357. [DOI: 10.1007/s00253-017-8098-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 12/25/2016] [Accepted: 12/26/2016] [Indexed: 10/20/2022]
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21
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Kanai M, Kawata T, Yoshida Y, Kita Y, Ogawa T, Mizunuma M, Watanabe D, Shimoi H, Mizuno A, Yamada O, Fujii T, Iefuji H. Sake yeast YHR032W/ERC1 haplotype contributes to high S-adenosylmethionine accumulation in sake yeast strains. J Biosci Bioeng 2017; 123:8-14. [DOI: 10.1016/j.jbiosc.2016.07.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 06/23/2016] [Accepted: 07/10/2016] [Indexed: 12/19/2022]
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22
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Ren H, Chen Z, Zhang X, Zhao Y, Wang Z, Wu Z, Xu H. Rapid and Quantitative Determination of S-Adenosyl-L-Methionine in the Fermentation Process by Surface-Enhanced Raman Scattering. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2016; 2016:4910630. [PMID: 27818834 PMCID: PMC5081456 DOI: 10.1155/2016/4910630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 09/07/2016] [Accepted: 09/08/2016] [Indexed: 06/06/2023]
Abstract
Concentrations of S-Adenosyl-L-Methionine (SAM) in aqueous solution and fermentation liquids were quantitatively determined by surface-enhanced Raman scattering (SERS) and verified by high-pressure liquid chromatography (HPLC). The Ag nanoparticle/silicon nanowire array substrate was fabricated and employed as an active SERS substrate to indirectly measure the SAM concentration. The linear relationship between the integrated intensity of peak centered at ~2920 cm-1 in SERS spectra and the SAM concentration was established, and the limit of detections of SAM concentrations was analyzed to be ~0.1 g/L. The concentration of SAM in real solution could be predicted by the linear relationship and verified by the HPLC detection method. The relative deviations (δ) of the predicted SAM concentration are less than 13% and the correlation coefficient is 0.9998. Rolling-Circle Filter was utilized to subtract fluorescence background and the optimal results were obtained when the radius of the analyzing circle is 650 cm-1.
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Affiliation(s)
- Hairui Ren
- Beijing Bioprocess Key Laboratory, Beijing University of Chemical Technology, Beijing 100029, China
- College of Science, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhaoyang Chen
- Beijing Bioprocess Key Laboratory, Beijing University of Chemical Technology, Beijing 100029, China
- College of Science, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xin Zhang
- Beijing Bioprocess Key Laboratory, Beijing University of Chemical Technology, Beijing 100029, China
- College of Science, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yongmei Zhao
- Engineering Research Center for Semiconductor Integrated Technology, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
| | - Zheng Wang
- Beijing Bioprocess Key Laboratory, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhenglong Wu
- Analytical and Testing Center, Beijing Normal University, Beijing 100875, China
| | - Haijun Xu
- Beijing Bioprocess Key Laboratory, Beijing University of Chemical Technology, Beijing 100029, China
- College of Science, Beijing University of Chemical Technology, Beijing 100029, China
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23
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Ku S, Park MS, Ji GE, You HJ. Review on Bifidobacterium bifidum BGN4: Functionality and Nutraceutical Applications as a Probiotic Microorganism. Int J Mol Sci 2016; 17:ijms17091544. [PMID: 27649150 PMCID: PMC5037818 DOI: 10.3390/ijms17091544] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 09/01/2016] [Accepted: 09/08/2016] [Indexed: 01/20/2023] Open
Abstract
Bifidobacterium bifidum BGN4 is a probiotic strain that has been used as a major ingredient to produce nutraceutical products and as a dairy starter since 2000. The various bio-functional effects and potential for industrial application of B. bifidum BGN4 has been characterized and proven by in vitro (i.e., phytochemical bio-catalysis, cell adhesion and anti-carcinogenic effects on cell lines, and immunomodulatory effects on immune cells), in vivo (i.e., suppressed allergic responses in mouse model and anti-inflammatory bowel disease), and clinical studies (eczema in infants and adults with irritable bowel syndrome). Recently, the investigation of the genome sequencing was finished and this data potentially clarifies the biochemical characteristics of B. bifidum BGN4 that possibly illustrate its nutraceutical functionality. However, further systematic research should be continued to gain insight for academic and industrial applications so that the use of B. bifidum BGN4 could be expanded to result in greater benefit. This review deals with multiple studies on B. bifidum BGN4 to offer a greater understanding as a probiotic microorganism available in functional food ingredients. In particular, this work considers the potential for commercial application, physiological characterization and exploitation of B. bifidum BGN4 as a whole.
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Affiliation(s)
- Seockmo Ku
- Department of Food and Nutrition, Research Institute of Human Ecology, Seoul National University, Seoul 151-742, Korea.
- Laboratory of Renewable Resources Engineering, Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47907-2022, USA.
| | - Myeong Soo Park
- Department of Hotel Culinary Arts, Yeonsung University, Anyang 430-749, Korea.
| | - Geun Eog Ji
- Department of Food and Nutrition, Research Institute of Human Ecology, Seoul National University, Seoul 151-742, Korea.
- Research Center, BIFIDO Co., Ltd., Hongcheon 250-804, Korea.
| | - Hyun Ju You
- Department of Food and Nutrition, Research Institute of Human Ecology, Seoul National University, Seoul 151-742, Korea.
- Institute of Health and Environment, Graduate School of Public Health, Seoul National University, Seoul 151-742, Korea.
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24
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Schoeman JC, Hou J, Harms AC, Vreeken RJ, Berger R, Hankemeier T, Boonstra A. Metabolic characterization of the natural progression of chronic hepatitis B. Genome Med 2016; 8:64. [PMID: 27286979 PMCID: PMC4902991 DOI: 10.1186/s13073-016-0318-8] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 05/17/2016] [Indexed: 02/07/2023] Open
Abstract
Background Worldwide, over 350 million people are chronically infected with the hepatitis B virus (HBV) and are at increased risk of developing progressive liver diseases. The confinement of HBV replication to the liver, which also acts as the central hub for metabolic and nutritional regulation, emphasizes the interlinked nature of host metabolism and the disease. Still, the metabolic processes operational during the distinct clinical phases of a chronic HBV infection—immune tolerant, immune active, inactive carrier, and HBeAg-negative hepatitis phases—remains unexplored. Methods To investigate this, we conducted a targeted metabolomics approach on serum to determine the metabolic progression over the clinical phases of chronic HBV infection, using patient samples grouped based on their HBV DNA, alanine aminotransferase, and HBeAg serum levels. Results Our data illustrate the strength of metabolomics to provide insight into the metabolic dysregulation experienced during chronic HBV. The immune tolerant phase is characterized by the speculated viral hijacking of the glycerol-3-phosphate–NADH shuttle, explaining the reduced glycerophospholipid and increased plasmalogen species, indicating a strong link to HBV replication. The persisting impairment of the choline glycerophospholipids, even during the inactive carrier phase with minimal HBV activity, alludes to possible metabolic imprinting effects. The progression of chronic HBV is associated with increased concentrations of very long chain triglycerides together with citrulline and ornithine, reflective of a dysregulated urea cycle peaking in the HBV envelope antigen-negative phase. Conclusions The work presented here will aid in future studies to (i) validate and understand the implication of these metabolic changes using a thorough systems biology approach, (ii) monitor and predict disease severity, as well as (iii) determine the therapeutic value of the glycerol-3-phosphate–NADH shuttle. Electronic supplementary material The online version of this article (doi:10.1186/s13073-016-0318-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Johannes C Schoeman
- Department of Analytical Biosciences, Leiden Academic Center for Drug Research, Leiden University, Einsteinweg 55, 2333, CC, Leiden, The Netherlands.,Netherlands Metabolomics Centre, Leiden University, Einsteinweg 55, 2333, CC, Leiden, The Netherlands
| | - Jun Hou
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center Rotterdam, Wytemaweg 80, Room Na-1011, 3015, CE, Rotterdam, The Netherlands
| | - Amy C Harms
- Department of Analytical Biosciences, Leiden Academic Center for Drug Research, Leiden University, Einsteinweg 55, 2333, CC, Leiden, The Netherlands.,Netherlands Metabolomics Centre, Leiden University, Einsteinweg 55, 2333, CC, Leiden, The Netherlands
| | - Rob J Vreeken
- Department of Analytical Biosciences, Leiden Academic Center for Drug Research, Leiden University, Einsteinweg 55, 2333, CC, Leiden, The Netherlands.,Netherlands Metabolomics Centre, Leiden University, Einsteinweg 55, 2333, CC, Leiden, The Netherlands.,Present address: Discovery Sciences, Janssen R&D, Turnhoutseweg 30, 2340, Beerse, Belgium
| | - Ruud Berger
- Department of Analytical Biosciences, Leiden Academic Center for Drug Research, Leiden University, Einsteinweg 55, 2333, CC, Leiden, The Netherlands.,Netherlands Metabolomics Centre, Leiden University, Einsteinweg 55, 2333, CC, Leiden, The Netherlands
| | - Thomas Hankemeier
- Department of Analytical Biosciences, Leiden Academic Center for Drug Research, Leiden University, Einsteinweg 55, 2333, CC, Leiden, The Netherlands.,Netherlands Metabolomics Centre, Leiden University, Einsteinweg 55, 2333, CC, Leiden, The Netherlands
| | - Andre Boonstra
- Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center Rotterdam, Wytemaweg 80, Room Na-1011, 3015, CE, Rotterdam, The Netherlands.
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Liu Y, Chen B, Wang Z, Liu L, Tan T. Functional characterization of a thermostable methionine adenosyltransferase from Thermus thermophilus HB27. Front Chem Sci Eng 2016. [DOI: 10.1007/s11705-016-1566-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Kim SY, Kim H, Min H. Effects of excessive dietary methionine on oxidative stress and dyslipidemia in chronic ethanol-treated rats. Nutr Res Pract 2015; 9:144-9. [PMID: 25861420 PMCID: PMC4388945 DOI: 10.4162/nrp.2015.9.2.144] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 03/09/2015] [Accepted: 03/19/2015] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND/OBJECTIVE The aim of this study was to examine the effect of high dietary methionine (Met) consumption on plasma and hepatic oxidative stress and dyslipidemia in chronic ethanol fed rats. MATERIALS/METHODS Male Wistar rats were fed control or ethanol-containing liquid diets supplemented without (E group) or with DL-Met at 0.6% (EM1 group) or 0.8% (EM2 group) for five weeks. Plasma aminothiols, lipids, malondialdehyde (MDA), alanine aminotransferase (ALT), and aspartate aminotransferase were measured. Hepatic folate, S-adenosylmethionine (SAM), and S-adenosylhomocysteine (SAH) were measured. RESULTS DL-Met supplementation was found to increase plasma levels of homocysteine (Hcy), triglyceride (TG), total cholesterol (TC), and MDA compared to rats fed ethanol alone and decrease plasma ALT. However, DL-Met supplementation did not significantly change plasma levels of HDL-cholesterol, cysteine, cysteinylglycine, and glutathione. In addition, DL-Met supplementation increased hepatic levels of folate, SAM, SAH, and SAM:SAH ratio. Our data showed that DL-Met supplementation can increase plasma oxidative stress and atherogenic effects by elevating plasma Hcy, TG, and TC in ethanol-fed rats. CONCLUSION The present results demonstrate that Met supplementation increases plasma oxidative stress and atherogenic effects by inducing dyslipidemia and hyperhomocysteinemia in ethanol-fed rats.
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Affiliation(s)
- Seon-Young Kim
- Department of Food and Nutrition, College of Bio-Nano Science, Hannam University, 461-6 Jeonmin-dong, Yuseong-gu, Daejeon 305-811, Korea
| | - Hyewon Kim
- Department of Food and Nutrition, College of Bio-Nano Science, Hannam University, 461-6 Jeonmin-dong, Yuseong-gu, Daejeon 305-811, Korea
| | - Hyesun Min
- Department of Food and Nutrition, College of Bio-Nano Science, Hannam University, 461-6 Jeonmin-dong, Yuseong-gu, Daejeon 305-811, Korea
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Başaran-Küçükgergin C, Bingül İ, Tekkeşin MS, Olgaç V, Doğru-Abbasoğlu S, Uysal M. Effects of carnosine, taurine, and betaine pretreatments on diethylnitrosamine-induced oxidative stress and tissue injury in rat liver. Toxicol Ind Health 2014; 32:1405-1413. [DOI: 10.1177/0748233714563432] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Several chemicals such as N-diethylnitrosamine (DEN) promote hepatocellular cancer in rodents and induce hepatocyte injury. DEN affects the initiation stage of carcinogenesis together with enhanced cell proliferation accompanied by hepatocellular necrosis. DEN-induced hepatocellular necrosis is reported to be related to enhanced generation of reactive oxygen species. Carnosine (CAR), taurine (TAU), and betaine (BET) are known to have powerful antioxidant properties. We aimed to investigate the effects of CAR, TAU, and BET pretreatments on DEN-induced oxidative stress and liver injury in male rats. Rats were given CAR (2 g L−1 in drinking water), TAU (2.5% in chow), and BET (2.5% in chow) for 6 weeks and DEN (200 mg kg−1 intraperitoneally) was given 2 days before the end of this period. Serum alanine aminotransferase, aspartate aminotransferase, lactate dehydrogenase, and γ-glutamyl transferase activities were determined and a histopathologic evaluation was performed on the liver tissue. Oxidative stress was detected in the liver by measuring malondialdehyde, diene conjugate, protein carbonyl and nitrotyrosine levels, glutathione and glutathione peroxidase levels, and superoxide dismutase and glutathione transferase activities. Pretreatments with CAR, TAU, and BET decreased liver prooxidant status without remarkable changes in antioxidant parameters in DEN-treated rats. Pretreatments with TAU and BET, but not CAR, were also found to be effective to reduce liver damage in DEN-treated rats. In conclusion, TAU, BET, and possibly CAR may have an ameliorating effect on DEN-induced hepatic injury by reducing oxidative stress in rats.
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Affiliation(s)
- C Başaran-Küçükgergin
- Department of Biochemistry, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - İ Bingül
- Department of Biochemistry, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - M Soluk Tekkeşin
- Department of Pathology, Oncology Institute, Istanbul University, Istanbul, Turkey
| | - V Olgaç
- Department of Pathology, Oncology Institute, Istanbul University, Istanbul, Turkey
| | - S Doğru-Abbasoğlu
- Department of Biochemistry, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - M Uysal
- Department of Biochemistry, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
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Imhasly S, Naegeli H, Baumann S, von Bergen M, Luch A, Jungnickel H, Potratz S, Gerspach C. Metabolomic biomarkers correlating with hepatic lipidosis in dairy cows. BMC Vet Res 2014; 10:122. [PMID: 24888604 PMCID: PMC4048253 DOI: 10.1186/1746-6148-10-122] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Accepted: 05/20/2014] [Indexed: 11/15/2022] Open
Abstract
Background Hepatic lipidosis or fatty liver disease is a major metabolic disorder of high-producing dairy cows that compromises animal performance and, hence, causes heavy economic losses worldwide. This syndrome, occurring during the critical transition from gestation to early lactation, leads to an impaired health status, decreased milk yield, reduced fertility and shortened lifetime. Because the prevailing clinical chemistry parameters indicate advanced liver damage independently of the underlying disease, currently, hepatic lipidosis can only be ascertained by liver biopsy. We hypothesized that the condition of fatty liver disease may be accompanied by an altered profile of endogenous metabolites in the blood of affected animals. Results To identify potential small-molecule biomarkers as a novel diagnostic alternative, the serum samples of diseased dairy cows were subjected to a targeted metabolomics screen by triple quadrupole mass spectrometry. A subsequent multivariate test involving principal component and linear discriminant analyses yielded 29 metabolites (amino acids, phosphatidylcholines and sphingomyelines) that, in conjunction, were able to distinguish between dairy cows with no hepatic lipidosis and those displaying different stages of the disorder. Conclusions This proof-of-concept study indicates that metabolomic profiles, including both amino acids and lipids, distinguish hepatic lipidosis from other peripartal disorders and, hence, provide a promising new tool for the diagnosis of hepatic lipidosis. By generating insights into the molecular pathogenesis of hepatic lipidosis, metabolomics studies may also facilitate the prevention of this syndrome.
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Affiliation(s)
| | - Hanspeter Naegeli
- University of Zürich-Vetsuisse, Institute of Pharmacology and Toxicology, Zürich CH-8057, Switzerland.
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Larabi R, Abtouche S, Brahimi M. Theoretical study of methyl group transfer assisted by proton transfer reaction in the N-acylated imidates. J Mol Model 2014; 20:2302. [DOI: 10.1007/s00894-014-2302-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 05/12/2014] [Indexed: 11/28/2022]
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Izu H, Shobayashi M, Manabe Y, Goto K, Iefuji H. S-Adenosylmethionine (SAM)-Accumulating Sake Yeast Suppresses Acute Alcohol-Induced Liver Injury in Mice. Biosci Biotechnol Biochem 2014; 70:2982-9. [PMID: 17151469 DOI: 10.1271/bbb.60377] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The suppressive effects on acute alcoholic liver injury of S-adenosylmethionine (SAM) and the sake yeast, Saccharomyces cerevisiae Kyokai No. 9, have been shown previously. To enhance the suppression of acute alcoholic liver injury by sake yeast, we prepared SAM-accumulating sake yeast (SAM yeast). Male C57BL/6 mice that had been fed on a diet containing 0.25% SAM yeast or sake yeast for two weeks received three doses of ethanol (5 g/kg BW). In the mice fed on the SAM yeast, the ethanol-induced increases in both triglyceride (TG) and alanine aminotransferase (ALT) were significantly repressed. In addition, the SAM yeast-fed mice did not show an ethanol-induced decrease in hepatic SAM level, suggesting that a disorder of methionine metabolism in the liver caused by ethanol was relieved by the SAM yeast. These results suggest that the SAM yeast had a stronger effect suppressing acute alcoholic liver injury in mice than the sake yeast.
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Affiliation(s)
- Hanae Izu
- National Research Institute of Brewing, Hiroshima.
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Liu GY, Wang W, Jia WD, Xu GL, Ma JL, Ge YS, Yu JH, Sun QK, Meng FL. Protective effect of S-adenosylmethionine on hepatic ischemia-reperfusion injury during hepatectomy in HCC patients with chronic HBV infection. World J Surg Oncol 2014; 12:27. [PMID: 24485003 PMCID: PMC3914845 DOI: 10.1186/1477-7819-12-27] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2013] [Accepted: 01/18/2014] [Indexed: 12/15/2022] Open
Abstract
Background Although hepatectomy is often performed with the Pringle maneuver, the problem of hepatic ischemia-reperfusion injury (HIRI) can also be serious. Thus, the present study was designed to investigate the protective effect of S-adenosylmethionine (SAMe) on HIRI, especially for patients with hepatocellular carcinoma (HCC) associated with chronic hepatitis B virus (HBV) infection and cirrhosis. Methods Eighty-one HCC patients with chronic HBV infection, undergoing partial hepatectomy with inflow occlusion, were divided into three groups. In the pretreatment group (PR group, n = 26), patients were given SAMe two hours before surgery. In the post-treatment group (PO group, n = 25), patients were given SAMe six hours after surgery. And in the control group (control group, n = 30), patients received partial hepatectomy without any SAMe. All pre-, intra- and postoperative blood samples were collected to measure the plasma levels of transaminases, bilirubin and cytokines. The results were compared among the three groups. Results There were no statistically significant intergroup differences observed in age, gender, hepatic inflow occlusion time and the results of liver function tests. Preoperative administration of SAMe (PR group) significantly reduced the plasma levels of alanine transaminase (ALT), aspartate transferase (AST), total bilirubin (TBIL) and direct bilirubin (DBIL) as compared to the other two groups. In the PO group, TBIL and DBIL were significantly lower than in the control group. Significant differences were also seen in IL-6 and TNF-α between the PR group and the other groups. In all groups, postoperative liver reserve function in the PR group as revealed by ICGR15 (Post ICGR15) was at its best before abdominal closure. Compared to the control group, the risk of complications and the hospital stay after surgery were significantly meliorated in the PR group. Additionally, patients with cirrhosis had a more acute rate of change in ALT and AST than non-cirrhotic patients. Conclusions Taken together, our preliminary findings suggest that preoperative administration of SAMe is useful and safe for reducing the HIRI in partial hepatectomy, especially for HCC patients whose disease is associated with chronic HBV infection and cirrhosis.
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Affiliation(s)
| | | | - Wei-dong Jia
- Anhui Key Laboratory of Hepatopancreatobiliary Surgery, 17 Lujiang Road, Hefei 230001, China.
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Amin KA, Hashem KS, Al-muzafar HM, Taha EM. Oxidative hepatotoxicity effects of monocrotaline and its amelioration by lipoic acid, S-adenosyl methionine and vitamin E. JOURNAL OF COMPLEMENTARY & INTEGRATIVE MEDICINE 2014; 11:35-41. [PMID: 24413220 DOI: 10.1515/jcim-2013-0041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2013] [Accepted: 12/07/2013] [Indexed: 01/06/2023]
Abstract
Liver is the major site for several xenobiotics metabolism, and formation of toxic metabolites that may be hepatotoxic, therefore the burden of metabolism and exposure to dangerous chemicals make liver vulnerable to a variety of disorders. Our work aimed to investigate the effects of some antioxidants such as lipoic acid (LA), S-adenosyl methionine (SAM) and vitamin E in a trail to investigate the possibility of using these substances to relieve and protect liver from exposure to monocrotaline (MCT). Twenty-five mature adult rats were classified into five groups (five rats in each group), control group, MCT-induced hepatic damage, LA+MCT, SAM+MCT and vitamin E+MCT group. Homogenates of liver samples were used for measuring the oxidative biomarkers and hepatic antioxidant status. The results showed that administration of vitamin E, SAM and LA caused a significant increase in liver glutathione contents, glutathione reductase, glutathione peroxidase and glutathione-S-transferase activities and a significant decrease in hepatic catalase and superoxide dismutase. We could conclude that administration of natural LA, SAM and vitamin E before and after MCT injection modulate the hepatic oxidative stresses induced by MCT in various extents.
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The chemopreventive effects of ginger aqueous and methanolic extracts against alcohol-induced sexual dysfunction in rats. ACTA ACUST UNITED AC 2013. [DOI: 10.1097/01.mjx.0000437954.88749.53] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Nagamma T, Bhutia RD, Pokharel DR, Yadav S, Baxi J. Influence of alcohol consumption on oxidative stress and antioxidant status in cancer patients--case-control study from Western Nepal. Asian Pac J Cancer Prev 2013; 13:3513-7. [PMID: 22994787 DOI: 10.7314/apjcp.2012.13.7.3513] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
AIM The present study assess the effect of consumption of alcohol on oxidative stress and antioxidant status in patients suffering from different types of cancer. METHODS This hospital based case control study conducted in the Western part of Nepal covered a total of 93 cancer patients with or without alcohol intake and smoking habits, along with 94 age, sex and habit-matched individuals serving as controls. Plasma thiobarbituric acid reacting substances (TBARS), total antioxidant activity (TAA), vitamin C, α-tocopherol and erythrocyte reduced glutathione (GSH) were estimated and compared. RESULTS The TBARS level was found to be significantly higher (p≤0.001) in all types of cancer patients when compared to controls, being aggravated in alcoholics with a smoking habit. No statistical significance (p≥0.05) was observed in the level of vitamin C and α-tocopherol. GSH and TAA level were significantly decreased (p≤0.001) in all the groups except those who consumed both branded as well as homemade alcohol and non-alcoholics without smoking habit. CONCLUSION Alcohol, irrespective of its commercial brand, increases oxidative stress in all types of cancer patients. This is even higher when alcohol intake is combined with a smoking habit. Decreased TAA and GSH are major risk factors for cancer development.
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Affiliation(s)
- T Nagamma
- Department of biochemistry, Melaka Manipal Medical College, Manipal, India.
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S-Adenosyl-L-Methionine augmentation in patients with stage II treatment-resistant major depressive disorder: an open label, fixed dose, single-blind study. ScientificWorldJournal 2013; 2013:204649. [PMID: 23766680 PMCID: PMC3666233 DOI: 10.1155/2013/204649] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Accepted: 04/18/2013] [Indexed: 12/03/2022] Open
Abstract
We investigated the efficacy of S-Adenosyl-L-Methionine (SAMe) augmentation in patients with treatment-resistant depressive disorder (TRD). Thirty-three outpatients with major depressive episode who failed to respond to at least 8 weeks of treatment with two adequate and stable doses of antidepressants were treated openly with fixed dose of SAMe (800 mg) for 8 weeks, added to existing medication. The primary outcome measure was the change from baseline in total score on Hamilton Rating Scale for Depression (HAM-D). The Clinical Global Impression of Improvement (CGI-I) was rated at the endpoint. Patients with a reduction of 50% or more on HAM-D total score and a CGI-I score of 1 or 2 at endpoint were considered responders; remission was defined as a HAM-D score ≤7. Secondary outcome measures included the Snaith-Hamilton Pleasure Scale (SHAPS) and the Sheehan Disability Scale (SDS). At 8 weeks, a significant decrease in HAM-D score was observed with response achieved by 60% of the patients and remission by 36%. Also a statistically significant reduction in SHAPS and SDS was observed. Our findings indicate that SAMe augmentation may be effective and well tolerated in stage II TRD. However, limitations of the present study must be considered and further placebo-controlled trials are needed.
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Malek S, Sinclair E, Hosgood G, Moens NMM, Baily T, Boston SE. Clinical findings and prognostic factors for dogs undergoing cholecystectomy for gall bladder mucocele. Vet Surg 2013; 42:418-26. [PMID: 23330871 DOI: 10.1111/j.1532-950x.2012.01072.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To report clinical findings and explore prognostic factors for dogs that had cholecystectomy for gall bladder mucocele. STUDY DESIGN Retrospective case series. ANIMALS Dogs (n = 43) with gall bladder mucoceles. RESULTS Diagnosis of gall bladder mucoceles was confirmed by histopathology and 74% were diagnosed based on preoperative abdominal ultrasonography. Intraoperative evidence of gall bladder rupture was noted in 10 dogs (23%), and 16 (37%) had evidence of previous leakage in the abdominal cavity. One dog had positive bacterial growth from the gall bladder content. The most common histopathologic findings in liver biopsies obtained at surgery were cholangiohepatitis, biliary hyperplasia, or cholestasis. Univariate analysis showed evidence of postoperative hypotension (P = .05) to be significantly negatively associated with survival. Significant difference in mean postoperative serum lactate (P = .034) and postoperative packed cell volume (P = .063) between dogs that survived and died was also noted. CONCLUSIONS Elevations in postoperative serum lactate concentrations and immediate postoperative hypotension in dogs undergoing cholecystectomy for gall bladder mucoceles are associated with poor clinical outcome.
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Affiliation(s)
- Sarah Malek
- Department of Companion Animals, Atlantic Veterinary College, University of Prince Edward Island, Canada.
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Lee CC, Shen SR, Lai YJ, Wu SC. Rutin and quercetin, bioactive compounds from tartary buckwheat, prevent liver inflammatory injury. Food Funct 2013; 4:794-802. [DOI: 10.1039/c3fo30389f] [Citation(s) in RCA: 107] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Chu J, Qian J, Zhuang Y, Zhang S, Li Y. Progress in the research of S-adenosyl-l-methionine production. Appl Microbiol Biotechnol 2012; 97:41-9. [DOI: 10.1007/s00253-012-4536-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2012] [Revised: 10/21/2012] [Accepted: 10/22/2012] [Indexed: 12/30/2022]
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Anstee QM, Day CP. S-adenosylmethionine (SAMe) therapy in liver disease: a review of current evidence and clinical utility. J Hepatol 2012; 57:1097-109. [PMID: 22659519 DOI: 10.1016/j.jhep.2012.04.041] [Citation(s) in RCA: 150] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Revised: 04/12/2012] [Accepted: 04/15/2012] [Indexed: 12/13/2022]
Abstract
S-adenosyl-L-methionine (SAMe; AdoMet) is an important, metabolically pleiotropic molecule that participates in multiple cellular reactions as the precursor for the synthesis of glutathione and principle methyl donor required for methylation of nucleic acids, phospholipids, histones, biogenic amines, and proteins. SAMe synthesis is depressed in chronic liver disease and so there has been considerable interest in the utility of SAMe to ameliorate disease severity. Despite encouraging pre-clinical data confirming that SAMe depletion can exacerbate liver injury and supporting a hepatoprotective role for SAMe therapy, to date no large, high-quality randomised clinical trials have been performed that establish clinical utility in specific disease states. Here, we offer an in-depth review of the published scientific literature relating to the physiological and pathophysiological roles of SAMe and its therapeutic use in liver disease, critically assessing implications for clinical practice and offering recommendations for further research.
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Affiliation(s)
- Quentin M Anstee
- Liver Research Group, Institute of Cellular Medicine, The Medical School, Newcastle University, Framlington Place, Newcastle-Upon-Tyne NE2 4HH, UK.
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Abstract
In humans, oxidative stress and antioxidant defenses are the sum of a complicated network of enzymatic and non-enzymatic processes. Depending on the stage and severity of diseases, a patient's antioxidant armamentarium may increase as an appropriate response to an oxidant challenge, whereas others may decrease as an indication of unbalanced consumption. In some cases, the formation of reactive oxygen species is a requisite and healthy event. In fact, free radicals can affect intracellular signal transduction and gene regulation, resulting in cytokine production essential to the inflammatory process. In many other cases, especially liver diseases, excessive oxidative stress undoubtedly contributes to the progression and pathological findings of disease and serves as a prognostic indicator. Reactive oxygen species are highly reactive molecules that are naturally generated in small amounts through metabolism and could damage cellular molecules such as lipids, proteins or DNA. Oxidative stress plays a major role in many liver diseases. In this review, we summarize the biological character of free radicals and some antioxidants, and the related methods of analysis. Then, we discusses the association of oxidative stress to many types of liver diseases.
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Affiliation(s)
- Runzhi Zhu
- Clinical Research Center, Affiliated Hospital of Guangdong Medical College, Zhanjiang Jiangsu Key Laboratory of Carcinogenesis and Intervention, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, China
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Adenosine kinase-deficient mutant of Saccharomyces cerevisiae accumulates S-adenosylmethionine because of an enhanced methionine biosynthesis pathway. Appl Microbiol Biotechnol 2012; 97:1183-90. [DOI: 10.1007/s00253-012-4261-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Revised: 06/07/2012] [Accepted: 06/22/2012] [Indexed: 11/25/2022]
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Au AY, Hasenwinkel JM, Frondoza CG. Hepatoprotective effects of S-adenosylmethionine and silybin on canine hepatocytes in vitro. J Anim Physiol Anim Nutr (Berl) 2012; 97:331-41. [PMID: 22320165 DOI: 10.1111/j.1439-0396.2012.01275.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Inflammation and oxidative stress are associated with liver injury and development of liver disease. The transcription factors nuclear factor-kappa beta (NF-κB) and nuclear factor erythroid 2-related factor 2 (Nrf2) play critical roles in modulating liver injury and damage. Activation of NF-κB induces production of pro-inflammatory molecules including prostaglandin E2 (PGE2 ), interleukin-8 (IL-8) and macrophage chemotactic protein-1 (MCP-1). Nrf2 regulates genes controlling antioxidants. Our laboratory previously showed that hepatocytes, the primary functional cell type comprising liver tissue, respond to the cytokine interleukin-1 beta (IL-1β) by increased production of PGE2 , IL-8 and MCP-1. This increase is associated with nuclear translocation of NF-κB. In this study, we evaluated whether primary canine hepatocytes pre-treated with the combination of S-adenosylmethionine (SAMe; 30 and 2000 ng/ml) and silybin (SB; 298 ng/ml), agents with known anti-inflammatory and antioxidant properties, could attenuate IL-1β-induced inflammation and oxidative stress. The SAMe and SB combination reduced cytokine-induced PGE2 , IL-8 and MCP-1 production while also inhibiting NF-κB nuclear translocation. These changes were accompanied by increased antioxidant enzyme-reduced glutathione (GSH) comparable to control levels. The study shows for the first time that the SAMe and SB combination inhibits both inflammation and oxidative stress through two separate signalling pathways.
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Affiliation(s)
- A Y Au
- Research and Development, Nutramax Laboratories, Inc., 2208 Lakeside Blvd., Edgewood, MD 21040, USA
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Llacuna L, Mach N. Papel de los antioxidantes en la prevención del cáncer. REVISTA ESPAÑOLA DE NUTRICIÓN HUMANA Y DIETÉTICA 2012. [DOI: 10.1016/s2173-1292(12)70067-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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A methionine-choline-deficient diet elicits NASH in the immunodeficient mouse featuring a model for hepatic cell transplantation. Exp Cell Res 2011; 318:276-87. [PMID: 22108588 DOI: 10.1016/j.yexcr.2011.11.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2011] [Revised: 10/12/2011] [Accepted: 11/05/2011] [Indexed: 12/19/2022]
Abstract
Non-alcoholic staetohepatitis (NASH) is associated with fat deposition in the liver favoring inflammatory processes and development of fibrosis, cirrhosis and finally hepatocellular cancer. In Western lifestyle countries, NASH has reached a 20% prevalence in the obese population with escalating tendency in the future. Very often, liver transplantation is the only therapeutic option. Recently, transplantation of hepatocyte-like cells differentiated from mesenchymal stem cells was suggested a feasible alternative to whole organ transplantation to ameliorate donor organ shortage. Hence, in the present work an animal model of NASH was established in immunodeficient mice to investigate the feasibility of human stem cell-derived hepatocyte-like cell transplantation. NASH was induced by feeding a methionine/choline-deficient diet (MCD-diet) for up to 5 weeks. Animals developed a fatty liver featuring fibrosis and elevation of the proinflammatory markers serum amyloid A (SAA) and tumor necrosis factor alpha (TNFα). Hepatic triglycerides were significantly increased as well as alanine aminotransferase demonstrating inflammation-linked hepatocyte damage. Elevation of αSMA mRNA and collagen I as well as liver architecture deterioation indicated massive fibrosis. Both short- and long-term post-transplantation human hepatocyte-like cells resided in the mouse host liver indicating parenchymal penetration and most likely functional engraftment. Hence, the NASH model in the immunodeficient mouse is the first to allow for the assessment of the therapeutic impact of human stem cell-derived hepatocyte transplantation.
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Nunes PM, Jones JG, Rolo AP, Palmeira CMM, Carvalho RA. Ursodeoxycholic acid treatment of hepatic steatosis: a (13)C NMR metabolic study. NMR IN BIOMEDICINE 2011; 24:1145-1158. [PMID: 21538633 DOI: 10.1002/nbm.1672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2010] [Revised: 12/10/2010] [Accepted: 12/13/2010] [Indexed: 05/30/2023]
Abstract
Ursodeoxycholic acid (UDCA) is commonly used for the treatment of hepatobiliary disorders. In this study, we tested whether a 4-week treatment with this bile acid (12-15 mg/kg/day) could improve hepatic fatty acid oxidation in obese Zucker rats - a model for nonalcoholic fatty liver disease and steatosis. After 24 h of fasting, livers were perfused with physiological concentrations of [U-(13) C]nonesterified fatty acids and [3-(13) C]lactate/[3-(13) C]pyruvate. Steatosis was associated with abundant intracellular glucose, lactate, alanine and methionine, and low concentrations of choline and betaine. Steatotic livers also showed the highest output of glucose and lactate. Glucose and glycolytic products were mostly unlabeled, indicating active glycogenolysis and glycolysis after 24 h of fasting. UDCA treatment resulted in a general amelioration of liver metabolic abnormalities with a decrease in intracellular glucose and lactate, as well as their output. Hepatic betaine and methionine were also normalized after UDCA treatment, suggesting the amelioration of anti-oxidative defenses. Choline levels were not affected by the bile acid, which may indicate a deficient synthesis of very-low-density lipoproteins. The percentage contribution of [U-(13) C]nonesterified fatty acids to acetyl-coenzyme A entering the tricarboxylic acid (TCA) cycle was significantly lower in livers from Zucker obese rats relative to control rats: 23.1 ± 4.9% versus 44.1 ± 2.7% (p < 0.01). UDCA treatment did not alter significantly fatty acid oxidation in control rats, but improved significantly oxidation in Zucker obese rats to 46.0 ± 6.1% (p > 0.05), comparable with control group values. The TCA cycle activity subsequent to fatty acid oxidation was reduced in steatotic livers and improved when UDCA was administered (0.24 ± 0.04 versus 0.37 ± 0.05, p = 0.05). We further suggest that the mechanism of action of UDCA is either related to the activity of the farnesoid receptor, or to the amelioration of the anti-oxidative defenses and cell nicotinamide adenine dinucleotide (NAD(+) /NADH) ratio, favoring TCA cycle activity and β-oxidation.
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Affiliation(s)
- Patrícia M Nunes
- Center for Neuroscience and Cell Biology, Department of Zoology, University of Coimbra, Portugal
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Cámara-Lemarroy CR, Guzmán-de la Garza FJ, Cordero-Pérez P, Alarcón-Galván G, Torres-Gonzalez L, Muñoz-Espinosa LE, Fernández-Garza NE. Comparative effects of triflusal, S-adenosylmethionine, and dextromethorphan over intestinal ischemia/reperfusion injury. ScientificWorldJournal 2011; 11:1886-92. [PMID: 22125445 PMCID: PMC3217601 DOI: 10.1100/2011/583603] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2011] [Accepted: 10/12/2011] [Indexed: 12/21/2022] Open
Abstract
Ischemia/reperfusion (I/R) is a condition that stimulates an intense inflammatory response. No ideal treatment exists. Triflusal is an antiplatelet salicylate derivative with anti-inflammatory effects. S-adenosylmethionine is a metabolic precursor for glutathione, an endogenous antioxidant. Dextromethorphan is a low-affinity N-methyl-D-aspartate receptor inhibitor. There is evidence that these agents modulate some of the pathways involved in I/R physiopathology. Intestinal I/R was induced in rats by clamping the superior mesenteric artery for 60 minutes, followed by 60 minutes of reperfusion. Rats either received saline or the drugs studied. At the end of the procedure, serum concentrations of tumor necrosis factor-alpha (TNF-alpha), malonaldehyde (MDA), and total antioxidant capacity (TAC) were determined and intestinal morphology analyzed. I/R resulted in tissue damage, serum TNF-alpha and MDA elevations, and depletion of TAC. All drugs showed tissue protection. Only triflusal reduced TNF-alpha levels. All drugs lowered MDA levels, but only triflusal and S-adenosylmethionine maintained the serum TAC.
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Affiliation(s)
- Carlos R Cámara-Lemarroy
- Departamento de Fisiología, Facultad de Medicina, UANL, Avenida Francisco I. Madero y Dr. Eduardo Aguirre Pequeño S/No, Col. Mitras Centro, 64460 Monterrey, NL, Mexico.
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Methionine and protein metabolism in non-alcoholic steatohepatitis: evidence for lower rate of transmethylation of methionine. Clin Sci (Lond) 2011; 121:179-89. [PMID: 21446920 DOI: 10.1042/cs20110060] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Hepatic metabolism of methionine is the source of cysteine, the precursor of glutathione, the major intracellular antioxidant in the body. Methionine also is the immediate precursor of SAM (S-adenosylmethionine) the key methyl donor for phosphatidylcholine synthesis required for the export of VLDL (very-low-density lipoprotein) triacylglycerols (triglycerides) from the liver. We have examined the kinetics of methionine, its transmethylation and trans-sulfuration with estimates of whole body rate of protein turnover and urea synthesis in clinically stable biopsy-confirmed subjects with NASH (non-alcoholic steatohepatitis). Subjects with NASH were more insulin-resistant and had significantly higher plasma concentrations of usCRP (ultrasensitive C-reactive protein), TNFα (tumour necrosis factor α) and other inflammatory cytokines. There was no significant effect of insulin resistance and NASH on whole body rate of protein turnover [phenylalanine Ra (rate of appearance)] and on the rate of urea synthesis. The rates of methylation of homocysteine and transmethylation of methionine were significantly lower in NASH compared with controls. There was no difference in the rate of trans-sulfuration of methionine between the two groups. Enteric mixed nutrient load resulted in a significant increase in all the measured parameters of methionine kinetics. Heterozygosity for MTHFR (5,10-methylene-tetrahydrofolate reductase) (677C→T) did not have an impact on methionine metabolism. We speculate that, as a result of oxidant stress possibly due to high fatty acid oxidation, the activity of methionine adenosyltransferase is attenuated resulting in a lower rate of transmethylation of methionine and of SAM synthesis. These results are the first evidence for perturbed metabolism of methionine in NASH in humans and provide a rationale for the development of targeted intervention strategies.
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Vincenzi B, Daniele S, Frezza AM, Berti P, Vespasiani U, Picardi A, Tonini G. The role of S-adenosylmethionine in preventing oxaliplatin-induced liver toxicity: a retrospective analysis in metastatic colorectal cancer patients treated with bevacizumab plus oxaliplatin-based regimen. Support Care Cancer 2011; 20:135-9. [PMID: 21229271 DOI: 10.1007/s00520-010-1078-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2010] [Accepted: 12/27/2010] [Indexed: 01/02/2023]
Abstract
BACKGROUND Hepatotoxicity represents a frequent chemotherapy-related side effect, often associated with course delays, discontinuations, and dose reductions. S-adenosylmethionine (AdoMet) administration is effective in the treatment of a variety of liver injuries, but it has never been evaluated in the prevention of chemotherapy-induced damage. PATIENTS AND METHODS Seventy-eight patients affected by metastatic colorectal cancer were enrolled. Forty-two patients were treated with bevacizumab and XELOX without administering AdoMet, 32 were treated with the same regimen plus supplementation with AdoMet. Liver enzymes levels were assessed before starting the treatment, and then every therapy cycle, liver toxicity, chemotherapy course delays, discontinuations, and dose reductions due to liver toxicity were recorded. RESULTS Aspartate aminotransferase (P = 0.02), alanine transaminase (P < 0.001), lactate dehydrogenase (P = 0.008), total bilirubin (P = 0.03), and gamma-glutamyltransferase (P < 0.001) were found to be significantly lower in patients treated with AdoMet than in those who were not. Patients supplemented with AdoMet experimented a lower grade of liver toxicity (P = 0.009) and had a reduced need of course delay (P = 0.042) and dose reduction (P = 0.051). CONCLUSIONS AdoMet supplementation in patients affected by metastatic colorectal cancer treated with oxaliplatin-based regimen seems to be effective in the prevention of chemotherapy-induced liver injury.
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Affiliation(s)
- Bruno Vincenzi
- Department of Medical Oncology, University Campus Bio-Medico, Via Alvaro del Portillo 200, 00128, Rome, Italy.
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Jameel NM, Thirunavukkarasu C, Murase N, Cascio M, Prelich J, Yang S, Harvey SAK, Gandhi CR. Constitutive release of powerful antioxidant-scavenging activity by hepatic stellate cells: protection of hepatocytes from ischemia/reperfusion injury. Liver Transpl 2010; 16:1400-9. [PMID: 21117250 DOI: 10.1002/lt.22172] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Within the liver, reactive oxygen species produced by infiltrating blood cells and Kupffer cells (resident macrophages) can injure hepatocytes. We hypothesized that hepatocyte survival is influenced by the relatively small juxtaposed population of hepatic stellate cells (HSCs). We used cultures of primary rat hepatocytes as targets for superoxide-induced damage, which was determined by crystal violet assay and lactate dehydrogenase release. An HSC-conditioned medium prevented the superoxide-induced death of hepatocytes, and the protective factor released by HSCs was a protein or proteins (apparent molecular weight > 100 kDa) resistant to heat (70°C) and pH (4.5-8.5). The protein or proteins were partially purified on DE52 cellulose, and the active fraction contained no detectable levels of superoxide dismutase: after separation by Sephadex G-100 gel filtration, the antioxidant activity could be reconstituted by the combination of 2 protein peaks, and this reconstituted activity was protective both in vitro and against liver ischemia/reperfusion injury in intact rats. Mass spectrometry proteomic studies confirmed that this activity could not be attributed to any previously identified antioxidant protein. Thus, HSCs protect hepatocytes against oxidative damage through the production of a novel protein, the further purification of which may lead to the isolation of a powerful oxygen radical scavenger with clinical applications.
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Affiliation(s)
- Noor Mohamed Jameel
- Thomas E. Starzl Transplantation Institute and Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15213, USA
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