Preface |
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iii | |
Contributors |
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xv | |
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Stratum Corneum Barrier Function: Definitions and Broad Concepts |
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1 | (4) |
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Why a Barrier and What Do We Mean by ``Barrier Function''? |
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1 | (1) |
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How Are the Various Barrier Functions Mediated? |
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1 | (1) |
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Evolving Concepts of the SC Barrier |
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2 | (3) |
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Defensive Functions of the Stratum Corneum: Integrative Aspects |
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5 | (10) |
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Protective Functions Are Linked |
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5 | (3) |
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Multiple Defensive Functions Can Be Altered by a Single Stressor |
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8 | (3) |
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Perturbations of One Function Can Alter Other Defensive Functions |
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11 | (1) |
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12 | (3) |
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A Brief History of How the Dead Stratum Corneum Became Alive |
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15 | (10) |
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22 | (1) |
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23 | (2) |
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The Epidermal Permeability Barrier: From Saran® Wrap to Biosensor |
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25 | (8) |
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25 | (5) |
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30 | (3) |
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PART II. STRUCTURE OF THE STRATUM CORNEUM |
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Biochemistry of Human Stratum Corneum Lipids |
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33 | (10) |
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Composition of Human Stratum Corneum Lipids |
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33 | (4) |
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37 | (3) |
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40 | (3) |
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Stratum Corneum Ceramides: Function, Origins, and Therapeutic Applications |
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43 | (22) |
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43 | (1) |
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44 | (1) |
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Why Are Stratum Corneum Ceramides Unique? |
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45 | (3) |
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Generation of Stratum Corneum Ceramides |
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48 | (5) |
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53 | (5) |
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58 | (1) |
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58 | (7) |
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Structure of the Skin Barrier |
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65 | (32) |
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65 | (1) |
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Stratum Corneum Lipid Composition and Organization in Normal Skin |
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66 | (12) |
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Barrier Function in Human Skin Equivalents |
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78 | (3) |
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Relation Between Lipid Composition and Organization |
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81 | (4) |
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A Unique Molecular Arrangement in the Long Periodicity Phase |
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85 | (3) |
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Extrapolation of In Vitro Findings to the Lipid Composition and Organization in Diseased and in Xerotic Skin |
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88 | (1) |
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88 | (1) |
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89 | (8) |
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Cornified Envelope and Corneocyte-Lipid Envelope |
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97 | (14) |
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97 | (1) |
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The Life-Cycle of Keratinocytes and the Histo-Architecture of the Epidermis |
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98 | (2) |
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Formation of the CE and the CLE |
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100 | (5) |
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Conclusions and Future Directions |
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105 | (1) |
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106 | (5) |
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Profilaggrin and the Fused S100 Family of Calcium-Binding Proteins |
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111 | (30) |
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111 | (3) |
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114 | (11) |
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Filaggrin-2: A Filaggrin-Related Protein |
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125 | (2) |
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127 | (1) |
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127 | (1) |
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128 | (1) |
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129 | (1) |
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Summary and Concluding Remarks |
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130 | (2) |
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132 | (9) |
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The Role of Keratins in Epithelial Homeostasis |
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141 | (30) |
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141 | (1) |
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Keratin Complexity, Nomenclature, and Genome Organization |
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141 | (1) |
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142 | (1) |
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The Mammalian Keratin Type I Clusters |
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142 | (3) |
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The Mammalian Keratin Type II Clusters |
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145 | (1) |
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Domain Structure, Assembly, and Protein Modifications |
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146 | (2) |
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Gene Regulation and Expression |
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148 | (3) |
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151 | (1) |
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152 | (1) |
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Keratin Knockout Mice and Other Functional Studies |
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153 | (6) |
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Conclusions and Perspectives |
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159 | (1) |
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160 | (11) |
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Corneodesmosomes: Pivotal Actors in the Stratum Corneum Cohesion and Desquamation |
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171 | (20) |
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171 | (5) |
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176 | (5) |
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181 | (4) |
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185 | (6) |
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Epidermal Barrier Function: Role of Tight Junctions |
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191 | (20) |
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191 | (1) |
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Tight Junctions (TJ) in Simple Epithelia |
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192 | (4) |
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Tight Junctions in the Skin |
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196 | (4) |
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Barrier Function of TJ in the Skin |
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200 | (2) |
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202 | (1) |
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202 | (9) |
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What Makes a Good Barrier? Adaptive Features of Vertebrate Integument |
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211 | (12) |
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211 | (2) |
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Impact Resistance of the Integument |
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213 | (1) |
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214 | (1) |
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Facultative Waterproofing |
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215 | (4) |
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Why Do Lessons from Comparative Biology Matter to the Barrier Researchers? |
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219 | (1) |
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220 | (3) |
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PART III. DYNAMIC PROPERTIES OF THE STRATUM CORNEUM |
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SC pH: Measurement, Origins, and Functions |
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223 | (8) |
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223 | (1) |
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223 | (1) |
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224 | (1) |
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SC pH: Functions Impacted |
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225 | (2) |
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227 | (1) |
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227 | (4) |
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Stratum Corneum Lipid Processing: The Final Steps in Barrier Formation |
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231 | (30) |
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231 | (1) |
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Lamellar Membrane Structures in Mammalian Stratum Corneum |
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231 | (2) |
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Glucosylceramides as a Major Source of Stratum Corneum Ceramides |
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233 | (3) |
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Glucosylceramide Processing Is Required for Epidermal Barrier Function |
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236 | (1) |
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Regulation of GlcCer'ase Activity in the Epidermis and SC |
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237 | (2) |
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Lipid Processing of the Corneocyte Lipid Envelope |
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239 | (1) |
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Sphingomyelinase Activity in the Generation of SC Barrier Lipids |
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240 | (2) |
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Processing of Glycerophospholipids by Secretory Phospholipases |
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242 | (1) |
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Ceramidases in Epidermal Lipid Processing and Function |
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243 | (1) |
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Processing of Cholesterol Sulfate by Steroid Sulfatase |
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244 | (1) |
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Lipid Processing Alterations in Atopic Dermatitis |
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245 | (2) |
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Altered Lipid Processing in Psoriasis |
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247 | (1) |
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Altered Lipid Processing with Aging |
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248 | (1) |
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249 | (1) |
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249 | (12) |
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PART IV. REGULATION OF STRATUM CORNEUM FORMATION |
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The Epidermal Lamellar Body as a Multifunctional Secretory Organelle |
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261 | (12) |
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Lamellar Bodies---Species and Tissue Distribution as an Indicator of Permeability Barrier Function |
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261 | (4) |
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Regulation of Lamellar Body Secretion |
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265 | (4) |
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Pathophysiology of Lamellar Body Secretion |
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269 | (1) |
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269 | (4) |
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Skin Structural Development |
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273 | (16) |
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273 | (1) |
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Development of Human Skin |
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273 | (2) |
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Periderm---the Embryonic Skin Layer of Unknown Function |
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275 | (8) |
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283 | (1) |
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284 | (5) |
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Epidermal Calcium Gradient and the Permeability Barrier |
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289 | (16) |
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289 | (1) |
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The Epidermal Calcium Gradient |
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290 | (2) |
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Altered Calcium Gradient in Skin Dysfunctions |
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292 | (3) |
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Calcium Gradient and Permeability Barrier: Experimental Studies |
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295 | (2) |
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Regulation of the Calcium Gradient |
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297 | (3) |
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Implications of Epidermal Calcium Gradient for Skin Biologists |
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300 | (1) |
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301 | (4) |
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The Role of the Primary Cytokines, TNF, IL-1, and IL-6, in Permeability Barrier Homeostasis |
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305 | (14) |
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305 | (1) |
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305 | (3) |
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308 | (1) |
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309 | (1) |
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Effect of Barrier Disruption on Cytokine Homeostasis in the Epidermis |
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310 | (2) |
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312 | (1) |
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Pathophysiologic Consequences |
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313 | (1) |
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313 | (1) |
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314 | (5) |
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Nuclear Hormone Receptors: Epidermal Liposensors |
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319 | (18) |
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The Nuclear Hormone Receptor Super Family |
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319 | (1) |
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319 | (3) |
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322 | (1) |
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Peroxisome Proliferator--Activated Receptors (PPAR) |
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322 | (1) |
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322 | (3) |
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325 | (2) |
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327 | (2) |
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329 | (3) |
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Crosstalk Between Lipids and Proteins in the Epidermis |
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332 | (1) |
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333 | (4) |
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PART V. FUNCTIONS OF THE STRATUM CORNEUM |
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Permeability Barrier Homeostasis |
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337 | (26) |
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Structural and Biochemical Basis for the Stratum Corneum Barrier |
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337 | (9) |
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Metabolic Regulation of Permeability Barrier Homeostasis |
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346 | (6) |
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Extracellular Signals of Barrier Homeostasis |
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352 | (2) |
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354 | (9) |
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Cutaneous Barriers in Defense Against Microbial Invasion |
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363 | (16) |
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363 | (1) |
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364 | (1) |
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365 | (1) |
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365 | (4) |
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Other Proteins and Peptides with Antimicrobial Peptide Functions |
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369 | (2) |
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371 | (1) |
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372 | (1) |
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373 | (1) |
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373 | (6) |
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The Epidermal Antioxidant Barrier |
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379 | (20) |
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379 | (1) |
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Generation of Reactive Oxygen Species and Oxidative Stress |
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379 | (1) |
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Physiological Barrier Antioxidants |
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380 | (1) |
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381 | (1) |
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Vitamin C, Glutathione, and Uric Acid |
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382 | (1) |
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Enzymatic Antioxidants in the Stratum Corneum |
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383 | (1) |
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Impact of Environmental Factors on Barrier Antioxidants |
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384 | (3) |
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Physiological Mechanisms of Barrier Antioxidant Repletion |
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387 | (2) |
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389 | (4) |
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393 | (6) |
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Sources and Role of Stratum Corneum Hydration |
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399 | (28) |
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399 | (2) |
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Stratum Corneum Hydration and Water Content |
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401 | (4) |
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Stratum Corneum Water Retention Capacity |
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405 | (4) |
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Stratum Corneum Lipid and NMF Gradients |
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409 | (1) |
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The Effect of the Seasons and Atmospheric Conditions on the Stratum Corneum |
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410 | (4) |
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The Role of Water in the Stratum Corneum |
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414 | (6) |
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420 | (2) |
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422 | (5) |
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Vitamin D and the Epidermis |
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427 | (20) |
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427 | (1) |
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Vitamin D Production and Metabolism in the Epidermis |
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427 | (4) |
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Role of Vitamin D3 in Epidermal Differentiation |
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431 | (6) |
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437 | (10) |
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PART VI. ABNORMALITIES IN THE STRATUM CORNEUM |
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Diseases That Affect Barrier Function |
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447 | (22) |
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447 | (1) |
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In Vivo Functional Assessment of the SC Barrier |
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448 | (1) |
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Measurements of Skin Surface Hydration State |
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449 | (1) |
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Assessment of Skin Barrier Function in Dermatoses |
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450 | (10) |
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SC Changes That Occur Later in Life in Those with Normal Healthy Skin |
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460 | (2) |
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462 | (1) |
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463 | (6) |
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Pathogenesis of the Barrier Abnormalities in Disorders of Cornification |
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469 | (42) |
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469 | (8) |
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Abnormalities in Extracellular Lipid Lamellar Structures and Other Lipid Metabolic Defects |
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477 | (9) |
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Acquired Ichthyoses Due to Unknown |
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486 | (1) |
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Abnormalities of Corneocytes |
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486 | (9) |
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Abnormalities in Intercellular Communication (Gap Junctions) |
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495 | (2) |
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Abnormalities in Corneocyte Cohesion Due to Abnormal Proteolysis of Desmosomes |
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497 | (1) |
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498 | (13) |
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Pathogenesis of Desquamation and Permeability Barrier Abnormalities in RXLI |
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511 | (8) |
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The Molecular and Biochemical Basis for Recessive X-Linked Ichthyosis |
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511 | (1) |
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Steroid Sulfatase and Cholesterol Sulfate in Normal Epidermal Physiology |
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512 | (1) |
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Regulation of Differentiation by Cholesterol Sulfate |
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513 | (1) |
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Mechanisms Proposed to Perturb Permeability Barrier Homeostasis in RXLI |
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514 | (1) |
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Mechanisms Proposed as Causes of Abnormal Desquamation in RXLI |
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514 | (1) |
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515 | (4) |
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Prevention and Repair of Barrier Disruption in Occupational Dermatology |
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519 | (16) |
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519 | (2) |
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Primary Individual Prevention |
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521 | (6) |
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Secondary Individual Prevention |
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527 | (2) |
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Tertiary Individual Prevention |
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529 | (1) |
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530 | (5) |
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The Aged Epidermal Permeability Barrier: Basis for Functional Abnormalities |
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535 | (18) |
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Structure, Function, Lipid Composition, and Metabolism of the Barrier |
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535 | (2) |
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Regulation of the Normal Epidermal Barrier |
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537 | (1) |
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The Aged Epidermal Barrier |
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538 | (7) |
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Barrier Repair Strategies for Aged Epidermis |
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545 | (1) |
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546 | (1) |
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547 | (6) |
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Psychological Stress and the Barrier: The Psychosensory Interface |
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553 | (16) |
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553 | (1) |
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554 | (5) |
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559 | (3) |
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Effect of Odorant Inhalation on Barrier Homeostasis |
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562 | (1) |
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Epidermis and Endocrine System |
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562 | (1) |
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Epidermis and Neurotransmitters |
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563 | (1) |
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564 | (1) |
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565 | (4) |
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The Stratum Corneum of the Epidermis in Atopic Dermatitis |
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569 | (22) |
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Normal Stratum Corneum: Composition and Function |
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569 | (1) |
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Atopic Dermatitis: Genetics |
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570 | (1) |
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Atopic Dermatitis: Function |
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571 | (1) |
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Basis for Barrier Abnormalities |
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572 | (6) |
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Clinical Manifestations Resulting from Impaired Barrier Function |
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578 | (2) |
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580 | (1) |
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581 | (10) |
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PART VII. IMPROVING BARRIER FUNCTION |
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Epilogue: Fixing the Barrier---Theory and Rational Deployment |
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591 | (10) |
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591 | (1) |
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Dynamics of Barrier Recovery |
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591 | (1) |
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Clinical Applications of the Cutaneous Stress Test |
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592 | (1) |
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Individual Lipid Requirements for the Barrier |
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593 | (1) |
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The Three Key SC Lipids Are Required in an Equimolar Distribution |
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593 | (1) |
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Non-Physiologic Lipids---Mechanism of Action |
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593 | (2) |
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Potential of Barrier Repair Therapy |
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595 | (2) |
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597 | (4) |
Index |
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601 | |