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Metabolism and Functions of Bioactive Ether Lipids in the Brain
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Main description:

Information on bioactive ether lipids and their involvement in neurological disorders is currently scattered throughout the literature in the form of original papers and reviews. Metabolism and Functions of Bioactive Ether Lipids in the Brain provides readers with a comprehensive description of metabolism of bioactive ether lipids in the brain, activities of enzymes involved in their metabolism, and their involvement in neurological disorders.


This book will be particularly useful to neuroscience graduate students, academics, and researchers. Clinicians will find this book useful for understanding molecular aspects of neurodegeneration in acute neural trauma and neurodegenerative diseases that are mediated by plamalogen-selective phospholipases A2 and PAF acetyl hydrolases. This monograph is the first to provide a comprehensive description of not only metabolism and role of plasmalogen and platelet activating factor in brain tissue but also the involvement of these lipids with abnormal signal transduction processes in neurological disorders.


 


Key Features


• Provides the neuroscience community with extensive description of ether lipids-derived lipid mediators their roles and association with neurological disorders


• Particular attention given to the description of keys enzymes associated with the generation of ether lipid-derived lipid mediators


• Illustrated with chemical structures and line diagrams of signal transduction pathways


• Discusses the future direction of research on ether lipid metabolism


 



About the Authors


Akhlaq A. Farooqui is a leader in the field of bioactive ether lipids, glutamate-mediated neurotoxicity, and brain phospholipases A2. In collaboration with late Dr. Lloyd A. Horrocks, he discovered a plasmalogen-selective phospholipase A2 in brain and showed its stimulation in kainate-mediated neurotoxicity and brain tissue from patients with Alzheimer disease. He has also found a decrease in plasmalogen levels in brain from Alzheimer’s disease patients. This decrease in plasmalogens is due to the stimulation of phospholipases A2. Akhlaq A. Farooqui has authored two monographs, Glycerophospholipids in Brain: Phospholipase A2 in Neurological Disorders (Springer, 2006) and Neurochemical Aspects of Excitotoxicity (Springer, 2007). Tahira Farooqui is an expert on glycerophospholipid and sphingolipid metabolism and neural plasticity. She has published extensively on molecular mechanism of neuroinflammation, interactions between glycerophospholipid and sphingolipid-derived lipid mediators, and neural plasticity in the brain.



Feature:

A comprehensive description of the metabolism and function of bioactive ether lipids in the brain


First book to describe the involvement of these lipids with abnormal signal transduction processes in neurological disorders


Of interest to both researchers and clinicians working with neurodegenerative disorders


Back cover:

Information on bioactive ether lipids and their involvement in neurological disorders is currently scattered throughout the literature in the form of original papers and reviews. Metabolism and Functions of Bioactive Ether Lipids in the Brain provides readers with a comprehensive description of metabolism of bioactive ether lipids in the brain, activities of enzymes involved in their metabolism, and their involvement in neurological disorders.


This book will be particularly useful to neuroscience graduate students, academics, and researchers. Clinicians will find this book useful for understanding molecular aspects of neurodegeneration in acute neural trauma and neurodegenerative diseases that are mediated by plamalogen-selective phospholipases A2 and PAF acetyl hydrolases. This monograph is the first to provide a comprehensive description of not only metabolism and role of plasmalogen and platelet activating factor in brain tissue but also the involvement of these lipids with abnormal signal transduction processes in neurological disorders.


 


Key Features


• Provides the neuroscience community with extensive description of ether lipids-derived lipid mediators their roles and association with neurological disorders


• Particular attention given to the description of keys enzymes associated with the generation of ether lipid-derived lipid mediators


• Illustrated with chemical structures and line diagrams of signal transduction pathways


• Discusses the future direction of research on ether lipid metabolism


 



About the Authors


Akhlaq A. Farooqui is a leader in the field of bioactive ether lipids, glutamate-mediated neurotoxicity, and brain phospholipases A2. In collaboration with late Dr. Lloyd A. Horrocks, he discovered a plasmalogen-selective phospholipase A2 in brain and showed its stimulation in kainate-mediated neurotoxicity and brain tissue from patients with Alzheimer disease. He has also found a decrease in plasmalogen levels in brain from Alzheimer’s disease patients. This decrease in plasmalogens is due to the stimulation of phospholipases A2. Akhlaq A. Farooqui has authored two monographs, Glycerophospholipids in Brain: Phospholipase A2 in Neurological Disorders (Springer, 2006) and Neurochemical Aspects of Excitotoxicity (Springer, 2007). Tahira Farooqui is an expert on glycerophospholipid and sphingolipid metabolism and neural plasticity. She has published extensively on molecular mechanism of neuroinflammation, interactions between glycerophospholipid and sphingolipid-derived lipid mediators, and neural plasticity in the brain.



Contents:

Occurrence and importance of ether lipids in brain.- Introduction.- Classification of ether lipids found in brain.- Physicochemical properties of ether lipids.- Fecapentaenes, the novel plasmalogens.- Other ether lipid found in mammalian tissues.- Lipid metabolism in ether lipid-deficient mice.- Conclusion.- Biosynthesis of plasmalogens in brain.- General considerations and distribution of plasmalogens in brain.- Biosynthesis of plasmalogens.- Dihydroxyacetone phosphate acyltransferase.- Alkyl-dihydroxyacetone phosphate synthase.- Acyl/alkyl dihydroxyacetone phosphate reductase 2.2.4. Alkyl-GP acyltransferase.- Alkylacyl-GP phosphohydrolase.- CDP-ethanomamine: diacylglycerol ethanolaminephosphotransferase.- Plasmalogen synthesizing enzymes during brain development.- Topology and distribution of plasmalogen and plasmalogen synthesizing enzymes.- Plasmalogens in lipid rafts.- Plasmalogens in the nucleus.- Factors affecting plasmalogen biosynthesis in brain.- Conclusion.- Catabolism of plasmalogens in brain.- Introduction.- Plasmalogen-selective phospholipase A2.- Receptor-mediated degradation of plasmalogens.- Regulation of PlsEtn-PLA2.- Turnover of Plasmalogen in brain.- Remodeling of plasmalogens (Reacylation/deacylation reactions).- Degradation of plasmalogens by phospholipase C.- Non-enzymic oxidation of plasmalogens in brain.- Plasmalogen-derived lipid mediators and their importance in brain.- Lysoplasmalogens in brain.- Conclusion.- Assay and purification of plasmalogen-selective phospholipase A2 and lysoplasmalogenase activities.- Introduction.- Determination of PlsEtn and PlsCho-PLA2 by radiochemical procedures.- Preparation of radiolabled [3H] plasmenylcholine (choline plasmalogen).- Labeling of lysoplasmenylcholine at the sn-2 position.- Determination of PlsCho-PLA2 activity.- Determination of PlsEtn-PLA2 by fluorometric assay.- Purification of ethanolamine plasmalogen.- Labeling of ethanolamine plasmalogen with pyrenesulfonyl chloride.- Determination of PlsEtn-PLA2 activity with pyrene-labeled plasmalogen.- Continuous spectrophotometric determination of PlsEtn-PLA2.- Determination of lysoplasmalogenase.- Continuous spectrophotometric procedure for lysoplasmalogenase.- Continuous spectrofluorometric procedure for lysoplasmalogenase.- Activities of plasmalogen-selective PLA2 in brains of various animal species and cultured cells of neuronal and glial origin.- Determination of lysoplasmalogenase activity in rat liver and brain microsomes.- Purification of plasmalogen-selective PLA2 from brain.- Purification of lysoplasmalogenase from liver.- Conclusion.- Roles of plasmalogens in brain.- Introduction.- Roles of plasmalogens in brain.- Plasmalogens as neural membrane components.- Plasmalogens as a storage depot for second messengers.- Plasmalogens in regulation of enzymic activities.- Plasmalogens in membrane fusion.- Plasmalogens in ion transport.- Plasmalogens in high density lipoprotein.- Plasmalogen, cholesterol oxidation, efflux and atherosclerosis.- Plasmalogens and their antioxidant activity.- Plasmalogen and generation of long-chain aldehydes.- Plasmalogen in differentiation.- Plasmalogens in ocular development.- Plasmalogens as precursors for PAF.- Conclusion.- Involvement of plasmalogens in neurological disorders.- Introduction.- Plasmalogens in neurological disorders.- Plasmalogens in ischemic injury.- Plasmalogens in Alzheimer disease.- Plasmalogens in spinal cord injury.- Plasmalogens in peroxisomal disorders.- Plasmalogens in Sjogren-Larsson syndrome.- Plasmalogens in malnutrition.- Plasmalogens in fetal alcohol syndrome.- Plasmalogens in diabetic heart.- Plasmalogens in other neurological disorders.- Plasmalogens in uraemic patients.- Plasmalogens in myelin-deficient mutant mice.- Conclusion.- Synthesis of platelet activating factor in brain.- Introduction.- Biosynthesis of platelet activating factor.- Remodeling pathway.- Cytosolic phospholipase A2.- Acetyl CoA: lyso-PAF acetyltransferase.- CoA-independent transacetylase.- De novo synthesis of PAF.- 1-Alkyl-2-lyso-sn-glycero-3-phosphate: acetyl-CoA acetyltransferase.- 1-Alkyl-2-acetyl-sn-glycero-3-phosphate phosphohydrolase.- 1-Alkyl-2-acetyl sn- glycerol: CDP-choline phosphotransferase.- Oxidative fragmentation pathway for PAF synthesis.-  Regulation of PAF synthesis.- Conclusion.- Degradation of platelet activating factor in brain.- Introduction.- PAF acetyl hydrolases in brain and plasma.- Purification and properties of PAF acetyl hydrolases.- Type I PAF acetyl hydrolase in mammalian tissues.- Type II PAF acetyl hydrolase in mammalian tissues.- PAF-acetyl hydrolases in mammalian plasma.- Other PAF acetyl hydrolases.- Regulation and role of PAF acetyl hydrolases in brain.- PAF hydrolyzing phospholipase C.- Other PAF hydrolyzing lipases.- Conclusion.- Roles of platelet activating factor in brain.- Introduction.- PAF receptors in brain.- Translocation of PAF from synthetic site to cell surface receptors.- PAF-receptor-mediated signal transduction.- Roles of platelet activating factor in brain.- PAF in gene expression.- PAF in neural cell migration.- PAF in long-term potentiation.- PAF in glutamate-mediated neurotoxicity.- PAF and calcium influx.- PAF in neuroinflammation.- PAF in cerebral blood flow and blood brain barrier permeability.- PAF in apoptosis.-  PAF in nociception.-  PAF in immune response.- Conclusion.- Involvement of platelet activating factor in neurological disorders.-  Introduction.- Involvement of platelet-activating factor in neurological disorders.- PAF in ischemia.- PAF in traumatic brain and spinal cord injury.- PAF in meningitis.-  PAF in HIV infection.- PAF in prion diseases.- PAF in multiple sclerosis.- PAF in Miller-Dieker lissencephaly.- PAF in migraine attacks.- PAF in kainic acid-mediated neurodegeneration.- Involvement of PAF in non-neural injuries.- Consequences of altered PAF acetyl hydrolase in cardiovascular system.- Molecular mechanism of PAF-mediated neural injury.- Clinical application of PAF antagonists for the treatment of neurological disorders.- Conclusion.- Biochemical effects of non-physiological antitumor ether lipids.- Introduction.- Effect of AEL on enzymes involved in signal transduction.- Effects of AEL on phospholipases A2, C., and D.- Effects of AEL on protein and lipid kinases.- Effect of AEL on cellular receptors.- Other effects of AEL on cellular metabolism.- Molecular mechanism and site of action of AEL.- Conclusion.- Perspective and directions for future development on ether lipids.- Introduction.- Interactions among glycerophospholipid, sphingolipid, and cholesterol-derived lipid mediators.-  Interactions between ether lipid and sphingolipid-derived lipid mediators.- Interactions between sphingolipid and cholesterol-derived lipid mediators.- Use of lipidomics, proteomics, and genomics for characterization of enzymes, lipid mediators, and signal transduction process in normal and diseased brain tissues.- Use of RNAi for the treatment of ether lipid-related neurodegenerative diseases.-  Conclusion



PRODUCT DETAILS

ISBN-13: 9780387774015
Publisher: Springer (Springer New York)
Publication date: April, 2008
Pages: 280

Subcategories: Neurology