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  • 1
    Online Resource
    Online Resource
    Newark :John Wiley & Sons, Incorporated,
    Keywords: Electrophoresis. ; Proteins - Analysis. ; Proteins -- Analysis. ; Proteins - Structure. ; Proteins -- Structure. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (556 pages)
    Edition: 1st ed.
    ISBN: 9783527613496
    DDC: 572/.6
    Language: English
    Note: From Genome to Proteome -- Contents -- Reviews -- Proteome Analysis: A Pathway to the Functional Analysis of Proteins -- Diagnosis of cellular states of microbial organisms using proteomics -- Candida albicans pathogenicity: A proteomic perspective -- Proteomics for genetic and physiological studies in plants -- Proteomics In human disease: Cancer, heart and Infectious diseases -- Genotypes and phenotypes -- Replication-Induced protein synthesis and Its importance to proteomics -- Advances In proteln solubillsatlon for two-dimensional electrophoresis -- Proteomics and automation -- Genomes and proteomes: Towards a multidimensional view of biology -- Sample preparation and solubilization -- The potential use of laser capture microdissection to selectively obtain distinct populations of cells for proteomic analysis - Preliminary findings -- Extractlon of Escherichia coli proteins with organic solvents prior to two-dimensional electrophoresis -- Towards the recovery of hydrophobic proteins on two-dimensional electrophoresis gels -- Developments in electrophoresis -- Recent developments In two-dimensional gel electrophoresis with immobilized pH gradients: Wide pH gradients up to pH 12, longer separation distances and simplified procedures -- Steady-state electrolysis of a solution of nonamphotheric compounds -- Modified lmmobillzed pH gradient gel strip equilibration procedure in SWISS-2DPAGE protocols -- Microchannel networks for electrophoretic separations -- Detection and quantitation -- Proteome analysis of polyacrylamide gel-separated proteins visualized by reversible negative staining using lmidazole-zinc salts -- Studies of quantitative analysis of protein expression in Saccharomyces cerevisiae -- Mass spectrometry -- High sensitivity mass spectrometric methods for obtaining intact molecular weights from gel-separated proteins. , Method for ldentlfication and quantitative analysis of protein lysine methylation using matrix-assisted laser desorption/ionization - time-of-flight mass spectrometry and amino acid analysis -- Proteome data analysis and management -- New algorithmic approaches to protein spot detection and pattern matching in two-dimensional electrophoresis gel databases -- Mining protein data from two-dimensional gels: Tools for systematic post-planned analyses -- Prokaryotes and yeast -- Effects of Interferon gamma on Chlamydia trachomatis serovar A and L2 protein expression Investigated by two-dimensional gel electrophoresis -- Induction of heat shock proteins in response to primary alcohols In Acinetobacter calcoaceticus -- Characterization of perlplasmic Escherichia coli protein expression at high cell densities -- Proteome analysis of factor for inversion stIlmulation (Fis) overproductlon In Escherichia coli -- Investigation of translation dynamics under cell-free protein blosynthesis conditions using high-resolutlon two-dimensional gel electrophoresis -- Regulation of virulence genes by environmental signals In Salmonella typhimurium -- Proteome analysis of the model microsymbiont Sinorhizoblum meliloti: Isolation and characterlsation of novel proteins -- Comparison of yeast cell protein solubilizatlon procedures for two-dimensional electrophoresis -- Biological Fluids -- A nondenaturing protein map of human plasma proteins correlated wlth a denaturing polypeptide map combining techniques of micro two-dimensional gel electrophoresis -- Proteins of rat serum: III. Gender-related differences in protein concentration under baseline conditions and upon experimental lnflammation as evaluated by two-dimensional electrophoresis -- Proteins of rat serum IV. Time-course of acutcphase protein expression and Its modulation by indomethacine. , improved two-dimensional gel electrophoresis representation of serum proteins by using ProtoClearTM -- ldentlflcation of proteins In a human pleural exudate using two-dimensional preparative liquid-phase electrophoresis and matrix-assisted laser desorption/Ionization mass spectrometry -- Two-dimensional polyacrylamide gel electrophoresis map of bovine ovarian fluid proteins -- Two-dimenslonal electrophoresis and computer imaging: Quantitatlon of human milk casein -- Analysis of tear protein patterns by a neural network as a diagnostlcal tool for the detection of dry eyes -- Demonstratlon of different forms of the anti-inflammatory proteins Iipocortin-1 and Clara cell protein-16 In human nasal and bronchoalveolar lavage fluids -- Eukaryotic cells and tissue -- A two-dimensional electrophoresls database of rat heart proteins -- Bovine dilated cardiomyopathy: Proteomic analysis of an animal model of human dilated cardiomyopathy -- Two-dimensional map of human brain proteins -- Analysis of proteins from membrane-enriched cerebellar preparations by two-dimensional gel electrophoresis and mass spectrometry -- Decreased levels of synaptosomal associated protein 25 in the brain of patients with Down Syndrome and Alzheimer's disease -- A proteome analysis of livers from obese (ob/ob) mice treated with the peroxisome prollferator WY14,643 -- Regional protein alterations in rat kidneys induced by lead exposure -- Functional proteomics of signal transduction by membrane receptors -- Modulation of signal transduction pathways and global protein composition of macrophages by ionizing radiation -- Characterisation of stem cell expression using two-dimensional electrophoresis -- The characterization of human spermatozoa membrane proteins - surface antigens and Immunological infertility. , Mapping and identification of HeLa cell proteins separated by immobilized pH-gradient two-dimensional gel electrophoresis and construction of a two-dimenslonal polyacrylamide gel electrophoresis database -- Mapping and Identification of interferon gamma-regulated HeLa cell proteins separated by immobilized pH gradient two-dimensional gel electrophoresis -- A two-dimensional protein map of Chinese hamster ovary cells -- Two-dimensional gel electrophoresis as analytical tool for identifying Candida albicans Immunogenic proteins -- Biochemical analysis of membrane proteins from an early maturatlon stage of phagosomes -- A computer-assisted two-dimensional gel electrophoresis approach for studying the variations in protein expression related to an induced functional repression of NFKB in lymphoblastold cell lines -- Technology development at the interface of proteome research and genomics: Mapping nonpolymorphic proteins on the physical map of mouse chromosomes -- Active dissociation of the fluorescent dye Hoechst 33342 from DNA in a living cell: Who could do It? -- Oncology -- Two-dlmenslonal gel analysis of protein expression In ovarian tumors shows a low degree of intratumorai heterogeneity -- The analysis of S100A9 and S100A8 expression In matched sets of rnacroscopically normal colon mucosa and colorectal carcinoma: The S100A9 and S100A8 positive cells underlie and invade tumor mass -- Characterization of colonic polyps by two-dimensional gel electrophoresis -- Protein changes associated wlth ionizing radiation-Induced apoptosis In human prostate epithelial tumor cells -- Two-dimensional electrophoresis of prostate-specific antigen in sera of men with prostate cancer or benign prostate hyperplasia -- A novel Isoform ratio switch of the polypyrimidine tract binding protein. , Glial fibrillary acidic protein and its fragments discriminate astrocytoma from oligodendroglloma -- ldentlflcatlon of HSP-60 as the specific antigen of IgM produced by BRG-lymphoma cells -- Plants -- Separation and characterization of needle and xylem maritime pine proteins -- Two-dimensional electrophoretic analysis of proteins associated with somatic embryogenesis development In Cupressus sempervirens L -- Index.
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  • 2
    Online Resource
    Online Resource
    San Diego :Elsevier Science & Technology,
    Keywords: Gel electrophoresis. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (422 pages)
    Edition: 1st ed.
    ISBN: 9781483193540
    Language: English
    Note: Front Cover -- Gel Electrophoresis of Proteins -- Copyright Page -- Table of Contents -- Preface -- List of Contributors -- List of Abbreviations -- Chapter 1. Steady-state Gel Electrophoresis Systems -- 1.1 Introduction -- 1.2 Historical Developments -- 1.3 Fundamental Steady-state Electrophoresis Systems -- 1.4 Fundamental Properties of Steady-state Electrophoresis Systems -- 1.5 Nomenclature and Definitions -- 1.6 Conductivity -- 1.7 Equations for Calculation of System Composition -- 1.8 Isotachophoresis -- 1.9 Moving Boundary Electrophoresis -- 1.10 Isoelectric Focusing Systems -- Acknowledgements -- References -- Chapter 2. One-dimensional PAA-gel Electrophoretic Techniques to Separate Functional and Denatured Proteins -- 2.1 Introduction -- 2.2 Structure and Physico-chemical Properties of Polyacrylamide Gels -- 2.3 Analytical Polyacrylamide Gel Electrophoresis -- 2.4 Affinity Electrophoresis -- Acknowledgments -- References -- Chapter 3. Conventional Isoelectric Focusing and Immobilised pH Gradients -- 3.1 Introduction -- 3.2 The Principles of IEF -- 3.3 IEF in Agarose Matrices -- 3.4 IEF in Polyacrylamide Matrices -- 3.5 Titration Curves -- 3.6 Production of Narrow pH Gradients -- 3.7 Measurements of pH Gradients -- 3.8 Trouble Shooting -- 3.9 Artefacts: a Unified View -- 3.10 The Chemicals -- the Immobiline Matrix -- 3.11 Narrow and Ultra-narrow pH Gradients -- 3.12 Extended pH Gradients -- 3.13 On Buffering Capacity and Ionic Strength -- 3.14 On Electro-endosmosis -- 3.15 Polymerisation Kinetics -- 3.16 Methodology: Casting an Immobiline Gel -- 3.17 Artefacts -- 3.18 Conclusions -- Acknowledgments -- References -- Chapter 4. High Resolution Two-dimensional Polyacrylamide-gel Electrophoresis -- 4.1 Introduction -- 4.2 Two-dimensional Electrophoresis under Non-denaturing Conditions. , 4.3 Denaturing 2D Systems using Electrophoresis in both Dimensions -- 4.4 The O'Farrell System -- 4.5 Sample Preparation and Solubilisation -- 4.6 IEF Dimension -- 4.7 New Alternatives for the First Dimension of 2D PAGE -- 4.8 Equilibration -- 4.9 SDS Dimension -- 4.10 Visualisation, Detection and Analysis -- 4.11 Heterogeneity and Artefacts -- 4.12 Estimates of Resolution -- 4.13 Applications -- 4.14 2D-PAGE and the Study of Human Genetic Disorders -- Acknowledgments -- References -- Chapter 5. Immunoelectrophoretic Methods -- 5.1 Introduction -- 5.2 Historical Background -- 5.3 Theory -- 5.4 General Conditions and Guidelines -- 5.5 Contemporary Methods -- 5.6 Applicability of Immunoelectrophoretic Methods -- 5.7 Advantages and Drawbacks -- References -- Chapter 6. In situ Peptide Mapping of Proteins and Polypeptides Separated by Polyacrylamide Gel Electrophoresis -- 6.1 Introduction -- 6.2 Primary Gel Systems -- 6.3 Storage, Rehydration and Equilibration -- 6.4 Protein Cleavage -- 6.5 Secondary Gel Systems -- 6.6 Detection -- 6.7 Evaluation -- References -- Chapter 7. Protein Staining and Detection Methods -- 7.1 Historical Introduction -- 7.2 Post-Electrophoretic Organic Protein Stains -- 7.3 Pre-electrophoretic Organic Stains -- 7.4 Silver Stains -- 7.5 Enzyme Stains -- 7.6 Detection of Radioactive Proteins -- 7.7 Detection of Protein-bound Trace Elements -- 7.8 Detection of Proteins on a Support Matrix after Electroblotting -- 7.9 Conclusion -- Acknowledgments -- References -- Chapter 8. Quantifying Patterns from Two-dimensional PAGE -- 8.1 Introduction -- 8.2 Basic Outlines -- 8.3 Detectors -- 8.4 Scanning Method and Speeds of Collection -- 8.5 Collecting Data -- 8.6 Programming Languages -- 8.7 Numerical Analyses -- 8.8 Reducing Data to Models -- 8.9 Presentation of Data -- Appendices -- References -- Index.
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  • 3
    Online Resource
    Online Resource
    Newark :John Wiley & Sons, Incorporated,
    Keywords: Proteomics. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (695 pages)
    Edition: 1st ed.
    ISBN: 9783527622160
    DDC: 572.6
    Language: English
    Note: Intro -- Clinical Proteomics -- Contents -- Editor's Overview -- Acknowledgements -- List of Contributors -- I Technologies -- 1 Preanalytical Issues in Clinical Proteomic Studies -- 1.1 Introduction -- 1.2 Preanalytical Factors -- 1.2.1 Biological Variation -- 1.2.1.1 Intrinic Influences/Factors -- 1.2.1.2 Extrinsic Influences/Factors -- 1.2.2 Technical Variables -- 1.2.2.1 Specimen/Sample Collection Mode -- 1.2.2.2 Type of Sample Container -- 1.2.2.3 Sample Processing and Handling Conditions -- 1.2.2.4 Sample Storage -- 1.3 Summary and Concluding Remarks -- 2 Protein Separation by Two-Dimensional Electrophoresis -- 2.1 Introduction -- 2.2 2DE: Protein Solubilization and Sample Preparation -- 2.3 2DE: Protein Separation -- 2.3.1 Focusing in the First Dimension -- 2.3.2 Advances in IEF -- 2.4 Improving Proteomic Coverage by Subcellular Fractionation -- 2.5 Protein Detection and Image Analysis -- 2.6 The Future of 2DE -- 3 Protein Separation: Liquid Chromatography -- 3.1 Introduction -- 3.2 Liquid Chromatography -- 3.2.1 HPLC Separation Principles -- 3.2.2 Reversed-Phase LC (RPLC, 1DLC) -- 3.2.3 Affinity Chromatography -- 3.2.4 Size-Exclusion Chromatography -- 3.2.5 Ion-Exchange Chromatography -- 3.2.6 Two-Dimensional LC -- 3.2.6.1 Chromatofocusing to Reversed Phase -- 3.2.6.2 Ion-Exchange-Reversed-Phase Liquid Chromatography -- 3.2.7 Three-Dimensional Liquid Chromatography -- 3.2.8 LC Image Analysis Requirement -- 3.2.9 Mass Spectrometry for LC -- 3.2.9.1 MALDI-TOF MS -- 3.2.9.2 ESI-MS/MS -- 3.3 Conclusions -- 4 HPLC in Protein Discovery -- 4.1 Introduction -- 4.2 LC-Based Approaches in Peptide Mass Mapping -- 4.3 LC-Based Approaches in Protein Mapping -- 4.4 Orthogonal 2D HPLC Separations -- 4.5 Conclusion -- 5 IEF Analysis of Peptides for Biomarkers Discovery -- 5.1 Introduction -- 5.2 Background -- 5.2.1 Isoelectric Focusing. , 5.2.2 Shotgun Proteomics -- 5.2.3 Shotgun IEF -- 5.3 Shotgun IEF Workflow -- 5.4 Applications -- 5.5 Discussion and Outlook -- 6 Capillary Electrophoretic Separations for Clinical Proteomics -- 6.1 Introduction -- 6.2 (Single-Dimension) Capillary Electophoretic Separation -- 6.3 Capillary Electrophoresis-Based Multidimensional Separations -- 6.3.1 Capillary Liquid Chromatography-Capillary Electrophoresis -- 6.3.2 Capillary Electrophoresis-Capillary Electrophoresis -- 6.3.3 Capillary Electrophoresis-Liquid Chromatography -- 6.3.3.1 Characterization of Human Saliva Proteome -- 6.3.3.2 Targeted Tissue Proteomics -- 6.4 Conclusions -- 7 Quantitative Proteomics Using Nano-LC with High Accuracy Mass Spectrometry -- 7.1 Introduction -- 7.2 Fundamentals of a High Mass Accuracy-Based LC-MS Approach -- 7.3 Nano-LC-MS for Enhanced Sensitivity and Dynamic Range Coverage -- 7.4 Further Developments for Increasing Proteomic Throughput -- 7.5 Obtaining More Robust Quantitative Proteomic Measurements -- 7.6 Summary and Perspective -- 8 Antibody Microarrays for Protein and Glycan Detection -- 8.1 Introduction -- 8.2 Antibody Preparation and Microarray Production -- 8.3 Sandwich Assays with Fluorescence Detection -- 8.4 Antibody Microarrays with Lectin Detection -- 8.5 Conclusion -- 8.6 Detailed Protocols -- 9 Biomarker Identification: The Role of Experimental Design, Statistics, and Data Sharing -- 9.1 Introduction -- 9.2 Experimental Designs for Biomarker Discovery -- 9.3 Identification of Biomarker Proteins -- 9.4 Biomarker Validation and the Issue of Data Sharing -- 9.5 Conclusions -- II Cancer -- 10 Applications of Stable Isotope Tagging Based Quantitative Proteomics in Cancer Research -- 10.1 Introduction -- 10.2 Stable Isotope Tagging Methods -- 10.2.1 Chemical Labeling of Stable Isotope Tags -- 10.2.2 Biological Incorporation of Stable Isotope Tags. , 10.3 Applications in Studies of Tissue Samples -- 10.3.1 Whole Tumor Tissue Labeled with ICAT -- 10.3.2 Whole Tumor Tissue Labeled with ICAT and iTRAQ -- 10.3.3 Isolated Tumor Cells Labeled with ICAT -- 10.3.4 Isolated Tumor Cells Labeled with (16)O/(18)O -- 10.4 Applications in Studies of Bodily Fluids -- 10.4.1 Pancreatic Juice Labeled with ICAT -- 10.4.2 Nipple Aspirate Fluid Labeled with ICAT -- 10.4.3 CSF -- 10.5 Applications in Studies of Cell Lines -- 10.5.1 Ovarian Cancer Cell Lines Labeled with ICAT -- 10.5.2 Breast Cancer Cell Lines Labeled with (18)O Labeling -- 10.5.3 Prostate Cancer Cell Lines Labeled with SILAC -- 10.5.4 Secretome by Pancreatic Cancer Cell Line Labeled with SILAC -- 10.6 Applications in Studies of Protein Interaction -- 10.7 Applications in Studies of Posttranslational Modifications (PTM) -- 10.8 Summary -- 11 Two-Dimensional Liquid Separations, Protein Microarrays, and Mass Spectrometry in Comprehensive Analysis of Posttranslational Modifications and Biomarker Discovery in Cancers -- 11.1 Challenges in Biomarker Discovery: The Emerging Role of Posttranslational Modifications -- 11.2 Proteomics in Disease Research -- 11.3 The Problem of Identifying and Characterizing Posttranslational Modifications: Current Efforts -- 11.4 Microarrays in Proteomic Investigations -- 11.5 A Comprehensive Method Combining Liquid Separations, Microarrays, and Mass Spectrometry -- 11.6 2D Liquid-Based Separations and Mass Mapping -- 11.7 Posttranslational Modification (PTM) Analysis -- 11.8 Phosphorylation -- 11.9 Glycosylation -- 11.10 Autoimmune (Humoral) Response Studies -- 11.11 Future of a 2DLC, Microarray Methodologies in Discovery and Diagnostics -- 12 Development and Use of Reversed-Phase Protein Microarrays for Clinical Applications -- 12.1 Introduction -- 12.2 The Growing Role of Protein Arrays in Molecular Diagnostics. , 12.3 Reversed-Phase Arrays: Enabling Technology for Patient-Tailored Therapeutics -- 12.4 Use of Reversed-Phase Arrays for Signal Pathway Profiling of Human Cancer -- 12.5 Use of Reversed-Phase Arrays: A View to the Future -- 13 Cyclin-Dependent Kinase Inhibitors and Cancer: Usefulness of Proteomic Approaches in Assessment of the Molecular Mechanisms and Efficacy of Novel Therapeutics -- 13.1 Introduction -- 13.2 Proteomic Analysis of Cancer Cells Responding to the Synthetic CDKI -- 13.3 Two-Dimensional Protein Maps of Cancer Cells Treated by CDKI -- 13.3.1 Model of Hematological Malignancy: CEM T-Lymphoblastic Leukemia -- 13.3.2 Solid Tumor Model: A549 Lung Adenocarcinoma Cells -- 13.4 Evaluation of the Protein Maps: Possible Pathways Relevant to Anticancer Effects of CDK Inhibition -- 13.4.1 Candidate Biomarkers Identified Using the Hematological Malignancy Model -- 13.4.2 Candidate Biomarkers Identified Using the Solid Tumor Model -- 13.5 Biomarker Validation Studies Focused on the crkl Protein -- 13.6 Conclusions -- III Cardiac Disease -- 14 Diagnostic Markers for Monitoring Heart Transplant Rejection -- 14.1 Introduction -- 14.2 Acute Rejection -- 14.3 Chronic Rejection -- 14.4 Cardiopulmonary Bypass -- 14.5 Conclusions -- 15 The Study of Microheterogeneity in Human Plasma Proteins: Application to Acute Myocardial Infarction -- 15.1 Background -- 15.2 Technical Approach -- 15.3 Programmatic Study of Disease: Population Proteomics Versus Myocardial Infarction -- 15.3.1 Preliminary Screening, (Putative) Biomarker Discovery and Identification -- 15.3.2 Verification -- 15.3.3 Knowledge Assembly and Next-Generation Assay Design -- 15.3.4 Data Generation -- 15.3.5 Data Analysis -- 15.3.6 Blind and Randomized Challenge of Final Assay -- 15.4 Summary -- 16 Discovery of Biomarkers for Cardiovascular Diseases. , 16.1 Current Proteomic Technologies Available for CVD Biomarker Searches -- 16.2 Challenging Issues for Proteomic Profiling -- 16.3 Screening Blood for Biomarkers -- 16.4 Tissue Surveys -- 16.5 The Value of Animal Models -- 16.6 After Technology Platform and Sample Selection: What Makes a Good Biomarker? -- 16.7 Ongoing Considerations -- 16.8 Outlook -- 17 Development of Biomarker Development Pipeline: Search for Myocardial Ischemia Biomarkers -- 17.1 Introduction -- 17.2 Myocardial Ischemia and Infarction -- 17.3 Lessons Learned from Cardiac Troponin -- 17.4 Building a Biomarker Development Platform I-Discovery -- 17.4.1 High-Abundant Protein Partitioning -- 17.4.2 Utilizing Multiple Protein Separation Methods to Maximize Proteome Coverage: A Synergistic Approach -- 17.5 Validation -- 17.5.1 Technologies in Validation -- 17.5.2 Cohorts for the Validation -- 17.6 Summary -- 18 The Albuminome as a Tool for Biomarker Discovery -- 18.1 Protein-Protein Interactions and Protein-Centric Approaches in Proteomics -- 18.2 Defining the Albuminome -- 18.3 The Albuminome as a Tool in Biomarker Discovery -- 18.4 Role of the Albuminome in Cardiovascular Proteomics -- 18.5 Other Plasma Subproteomes -- 18.6 Conclusion -- 19 Application of Metabolomics to Cardiovascular Biomarker and Pathway Discovery -- 19.1 Introduction -- 19.2 The Birth of Metabolomics -- 19.3 Technologies to Define the Human Metabolome -- 19.4 The Diagnostic Utility of Metabolic Peak Patterns: A Call for Unambiguous Identification -- 19.5 Pathway Analysis of Metabolomic Data -- 19.6 Rationale for Metabolomic Approaches to Study Atherosclerosis and its Complications: The Role of Proinflammatory Lipid Metabolites -- 19.7 Unanticipated Roles of "Intracellular" Metabolites -- 19.8 Clinical Rationale for Applying Metabolomics to Coronary Heart Disease -- 19.9 Impediments to Human Applications. , 19.10 Application of Metabolomics to Unique Human Cardiovascular Disease Models.
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  • 4
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of organic chemistry 23 (1958), S. 1539-1544 
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of organic chemistry 60 (1995), S. 2210-2215 
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 372 (1981), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1573-2576
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We examined the potential contribution of thromboxanes in human monocyte adherence to plastic. Monocyte adherence to plastic could be augmented by various stimuli including lipopolysaccharide, chemotactic peptide, and supernates of antigen-stimulated lymphocytes. Increments in monocyte adhesiveness were suppressed by inhibition of cyclooxygenase, thromboxane synthetase, or by antiserum to thromboxane B2. Neither prostaglandin E2 or F2α significantly affected baseline or lipopolysaccharide-stimulated monocyte adherence. Additional experiments confirmed incremental production of thromboxane B2 by monocytes after incubation with lipopolysaccharide. Thromboxane B2 itself did not stimulate monocyte adhesiveness. These data demonstrate that monocytes release thromboxane A2 following stimulation and suggest that thromboxane A2 may play a significant role in monocyte-substrate attachment.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: We have previously reported that endothelin-1 stimulates phospholipase C-in-duced hydrolysis of phosphatidylinositol-4, 5-bisphosphate, Other signal transduction pathways that hydrolyze alternative phospholipids through phospholipase D may also mediate endothelin-stimulated cellular responses. We initially evaluated endothelin-dependent generation of 32P-phosphatidic acid as an indirect indication of phospholipase D activity in rat mesangial cells. Endothelin (10-7M) induced an elevation of phosphatidic acid that was maximal at 15 min and persisted upward of 60 min. Pretreatment with the diacylglycerol-kinase inhibitor, R59022, did not reduce formation of endothelin-stimulated 32P-phosphatidic acid, demonstrating that the sequential actions of phospholipase C/diacylglycerol kinase do not contribute to endothelin-stimulated phosphatidic acid formation. We next conclusively identified a role for phospholipase D in the generation of phosphatidic acid by assessing the formation of 3H-phosphatidylethanol from 3H-alkyl lyso glycerophosphocholine and exogenous ethanol. Endothelin stimulated 3H-alkyl phosphatidylethanol formation in the presence but not the absence of 0.5% ethanol. Also, endothelin induced a concomitant elevation of 3H-alkyl-phosphatidic acid that was significantly reduced when the cells were exposed to exogenous ethanol, reflecting the formation of phosphatidylethanol. In addition, endothelin stimulated the release of 3H-choline and 3H-ethanolamine, demonstrating that additional phospholipids may serve as substrates for phospholipase D. Phorbol esters and synthetic diglycerides mimicked the effects of endothelin to stimulate phospholipase D and inhibitors of protein kinase C significantly reduced endothelin-stimulated phospholipase D. In addition, endothelin did not stimulate phosphatidylethanol formation in protein kinase C down-regulated cells. The calcium ionophore, ionomycin, did not stimulate phospholipase D and mesangial cells pretreated with BAPTA to chelate cytosolic calcium did not show a diminished endothelin-stimulated phospholipase D. Thus these data demonstrate that mesangial cells possess a protein kinase C-regulated phospholipase D activity that can be stimulated with endothelin.
    Additional Material: 9 Ill.
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  • 9
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 153 (1992), S. 244-255 
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: We have previously reported that platelet-activating factor (PAF) elevates cytosolic free calcium concentration ([Ca2+]i) in fura-2-loaded glomerular mesangial cells. To confirm that this increase in [Ca2+]i is a result of receptor-mediated activation of phospholipase C, we investigated hydrolysis of phosphaphatidylinositol-4,5-bisphosphate (Ptdlns-4,5-P2) in PAF-treated mesangial cells. PAF (10-7 M) stimulated a rapid and transient formation of inositol trisphosphate. In concomitant experiments, PAF stimulated a biphasic accumulation of 3H-arachidonatelabeled 1,2-diacylglycerol (DAG). The secondary elevation in DAG was coincident with a rise in 3H-phosphorylcholine (PC) and 3H-phosphorylethanolamine (PE) suggesting that PAF stimulates delayed phospholipase activities which hydrolyze alternate phospholipids besides the polyphosphoinositides. This PAF-stimulated elevation in 3H-water soluble phosphorylbases was seen at 5 min but not at 15 sec suggesting that the initial rise in DAG as well as the initial elevation in [Ca2+]i are due primarily to Ptdlns-4,5-P2 hydrolysis. PAF also stimulated PGE2 as well as 3H-arachidonic acid and 3H-lyso phosphatidylcholine (PtdCho) formation. We suggest that arachidonate released specifically from PtdCho via phospholipase A2 is a source of this PAF-elevated PGE2. It has been postulated that anti-inflammatory prostaglandins may antagonize the contractile and proinflamatory effects of PAF via activation of adenylate cyclase. Surprisingly, exogenous PAF reduced basal and receptor-mediated cAMP concentration indicating that PAF-stimulated transmembrane signaling pathways may oppose receptor-mediated activation of adenylyl cyclase. We have taken advantage of the different sensitivities of phospholipases A2 and C(s) to PMA, EGTA, and pertussis toxin to dissociate phospholipase A2 and C activities. Acute PMA-treatment enhanced PAF-stimulated PGE2 formation, reduced PAF-induced elevations in [Ca2+]i and had no effect upon PAF-stimulated 3H-PE. We have also demonstrated that phospholipase A2, but not Ptdlns-specific phospholipase C, was sensitive to external calcium concentration. The role of a GTP-binding protein to couple PAF-receptors to the Ptdlns-specific phospholipase C was confirmed as GTPγS synergistically elevated PAF-stimulated inositol phosphate formation. We also demonstrated that pertussis toxin ADP-ribosylates a single protein of an apparent 42 kD mass and that PAF pretreatment reduced subsequent ADP-ribosylation in a time-dependent manner. However, pertussis toxin had no effect upon phospholipase C-generated water soluble phosphorylbases or inositol phosphates. In contrast, PAF-stimulated phospholipase A2 and PAF-inhibited adenylyl cyclase activities were sensitive to pertussis toxin. These results suggest that a pertussis toxin-sensitive GTP binding protein(s) may couple PAF receptors to both phospholipase A2 and adenylyl cyclase which is distinct from a pertussis toxin-insensitive GTP binding protein that links PAF receptors to phospholipase C(s). Thus, we conclude that PAF activates rat mesangial cells through multiple signaling pathways.
    Additional Material: 9 Ill.
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  • 10
    Electronic Resource
    Electronic Resource
    New York, N.Y. : Wiley-Blackwell
    Journal of Supramolecular Structure 8 (1978), S. 465-471 
    ISSN: 0091-7419
    Keywords: spectrin ; fractionation ; trypsin digestion ; peptide mapping ; Life Sciences ; Molecular Cell Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: The two major polypeptides of erythrocyte membrane spectrin have been isolated by preparative polyacrylamide gel electrophoresis in the presence of sodium dodecyl sulfate. The tryptic peptide maps of the two polypeptides have been prepared by thin-layer chromatography and electrophoresis. Radioactive peptides have been prepared by 14C-carboxymethylation and chloramine T-catalysed 125I iodination. Maps of both sets of peptides demonstrate a marked similarity between the two parent polypeptides.
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