- •Diabetic Retinopathy
- •Preface
- •Contents
- •Contributors
- •Nonproliferative Diabetic Retinopathy
- •Nonproliferative Diabetic Retinopathy
- •Inflammatory Mechanisms
- •Microaneurysms
- •Vascular Permeability
- •Capillary Closure
- •Classification Of Nonproliferative Retinopathy
- •Macular Edema
- •Risk Factors For Progression Of Retinopathy
- •Severity of Retinopathy
- •Glycemic Control
- •The Diabetes Control and Complications Trial
- •Epidemiology of Diabetes Interventions and Complications Trial
- •The United Kingdom Prospective Diabetes Study
- •Hypertension
- •The United Kingdom Prospective Diabetes Study
- •Appropriate Blood Pressure Control in Diabetes Trials
- •Elevated Serum Lipid Levels
- •Pregnancy and Diabetic Retinopathy
- •Other Systemic Risk Factors
- •Management Of Nonproliferative Diabetic Retinopathy
- •Photocoagulation
- •Scatter Photocoagulation for Nonproliferative Diabetic Retinopathy
- •Scatter Photocoagulation for Proliferative Retinopathy
- •Focal Photocoagulation for Diabetic Macular Edema
- •Other Treatment of Diabetic Macular Edema
- •Medical Therapy
- •Aspirin And Antiplatelet Treatments
- •Aldose Reductase Inhibitors
- •Other Medical Treatments
- •Summary
- •Acknowledgment
- •References
- •Proliferative Diabetic Retinopathy
- •Development and Natural History
- •Histopathology and Early Development
- •Proliferation and Regression of New Vessels
- •Contraction of the Vitreous and Fibrovascular Proliferations
- •Retinal Distortion and Detachment
- •Burned-Out Proliferative Diabetic Retinopathy
- •Systemic Associations
- •Proliferative Diabetic Retinopathy and Glycemic Control
- •Other Risk Factors for Proliferative Diabetic Retinopathy
- •Rubeosis Iridis
- •Anterior Hyaloidal Fibrovascular Proliferation
- •Management of Proliferative Diabetic Retinopathy
- •Pituitary Ablation
- •Photocoagulation
- •Randomized Clinical Trials of Laser Photocoagulation
- •The Diabetic Retinopathy Study
- •Risks and Benefits Photocoagulation In The Drs
- •The Early Treatment Diabetic Retinopathy Study
- •Indications For Photocoagulation of Pdr
- •PRP and Macular Edema
- •PRP Treatment Techniques
- •Vitrectomy for PDR
- •Pharmacologic Treatment of PDR
- •Acknowledgment
- •References
- •Brief Historical Background
- •The Wesdr
- •Prevalence of Diabetic Retinopathy
- •Incidence of Diabetic Retinopathy
- •Diabetic Retinopathy in African American and Hispanic Whites
- •Native Americans and Asian Americans
- •Age and Puberty
- •Genetic and Familial Factors
- •Modifiable Risk Factors
- •Hyperglycemia
- •Clinical Trials of Intensive Treatment of Glycemia
- •Diabetes Control and Complications Trial
- •The United Kingdom Diabetes Prospective Study (UKPDS)
- •Hypertension
- •Lipids
- •Subclinical and Clinical Diabetic Nephropathy
- •Microalbuminuria and Diabetic Retinopathy
- •Gross Proteinuria and Retinopathy
- •Diabetic Retinopathy as a Risk Indicator of Subclinical Nephropathy
- •Other Risk Factors For Retinopathy
- •Smoking and Drinking
- •Body Mass Index and Physical Activity
- •Hormone and Reproductive Exposures in Women
- •Prevalence and Incidence of Visual Impairment
- •Conclusions
- •Acknowledgments
- •References
- •Introduction
- •Fluorescein Angiography
- •Properties
- •Side Effects
- •Normal Fluorescein Angiography
- •Terminology
- •Fluorescein Angiography in the Evaluation of Diabetic Retinopathy
- •Fluorescein Angiography in the Evaluation of Diabetic Macular Edema
- •Optical Coherence Tomography
- •Low-Coherence Interferometry
- •OCT Image Interpretation
- •OCT Technology Development
- •The Role of OCT in Diabetic Macular Edema
- •Morphologic Patterns of Diabetic Macular Edema
- •Clinical Applications of OCT in Diabetic Macular Edema
- •Conclusions
- •References
- •Diabetic primates
- •Type of Diabetes
- •Histopathology and Rate of Development of the Retinopathy
- •Therapies Studied in this Model
- •Advantages and Disadvantages of the Model
- •Diabetic dogs
- •Type of Diabetes
- •Histopathology and Rate of Development of Retinopathy
- •Therapies Studied in this Model
- •Advantages and Disadvantages of the Model
- •Diabetic cats
- •Type of Diabetes
- •Histopathology and Rate of Development of Retinopathy
- •Therapies Studied in this Model
- •Advantages and Disadvantages of the Model
- •Diabetic rats
- •Type of Diabetes
- •Type 1 diabetes
- •Type 2 diabetes
- •Histopathology and Rate of Development of Retinopathy
- •Vascular disease
- •Neuronal disease
- •Therapies or Gene Modifications Studied in this Model
- •Advantages and Disadvantages of the Model
- •Diabetic mice
- •Type of Diabetes
- •Type 1 diabetes
- •Type 2 diabetes
- •Histopathology and Rate of Development of Retinopathy
- •Vascular disease
- •Neural disease
- •Therapies or Gene Modifications Studied in this Model
- •Advantages and Disadvantages of the Model
- •Other Rodents
- •Galactose Feeding
- •Nondiabetic Models in Which Growth Factors are Altered
- •VEGF overexpression
- •IGF overexpression
- •PDGF-B-deficient mice
- •Oxygen-Induced Retinopathy
- •Sympathectomy
- •Retinal Ischemia–Reperfusion
- •Summary
- •References
- •Introduction
- •Biochemistry and Genetics of The Polyol Pathway
- •Aldose Reductase
- •The Aldose Reductase Enzyme
- •The Aldose Reductase Gene
- •Polymorphisms of the AR Gene
- •Sorbitol Dehydrogenase
- •The Sorbitol Dehydrogenase Enzyme
- •The Sorbitol Dehydrogenase Gene
- •Ar Polymorphisms and Risk of Diabetic Retinopathy
- •Sdh Polymorphisms and Diabetic Retinopathy
- •Ar Overexpression
- •Sdh Overexpression
- •Ar “Knockout” Mice
- •Sdh-Deficient Mice
- •Osmotic Stress
- •Oxidative Stress
- •Activation of Protein Kinase C
- •Generation of AGE Precursors
- •Proinflammatory Events and Apoptosis
- •Ari Structures and Properties
- •Effects of Aris in Experimental Diabetic Retinopathy
- •The Polyol Pathway in Human Diabetic Retinopathy
- •The Sorbinil Trial
- •Perspective and Needs
- •Rationale for Defining the Pathogenic Role of the Polyol Pathway
- •Needs to be Met to Arrive at Anti-Polyol Pathway Therapy
- •References
- •Introduction to Diabetic Retinopathy
- •Biochemistry of Age Formation
- •Pathogenic Role of Ages In Diabetic Retinopathy
- •AGEs and Clinical Correlation of Diabetic Retinopathy
- •AGE Accumulation in the Eye
- •Effect of AGEs on Retinal Cells
- •RAGE in Diabetic Retinopathy
- •Other AGE Receptors in Diabetic Retinopathy
- •Anti-Age Strategies For Diabetic Retinopathy
- •Conclusion
- •References
- •Introduction
- •Dag-Pkc Pathway
- •Diabetes and Retinal Blood Flow
- •Basement Membrane and Ecm Changes
- •Vascular Permeability and Angiogenesis
- •Conclusions
- •References
- •Sources of Oxidative Stress in The Diabetic Retina
- •Overview
- •Mitochondrial Electron Transport Chain (ETC)
- •Advanced Glycation End (AGE) Product Formation
- •Cyclo-oxygenase (COX)
- •Flux Through Aldose Reductase (AR) Pathway
- •Activation of Protein Kinase C (PKC)
- •Endothelial NO Synthase (eNOS)
- •Inducible NOS (iNOS)
- •NADPH Oxidase
- •Antioxidants in Diabetic Retinopathy
- •Overview
- •Glutathione (GSH)
- •Superoxide Dismutase (SOD)
- •Catalase
- •Effects of Oxidative Stress in The Diabetic Retina
- •Overview
- •Growth Factors and Cytokines
- •Cytoxicity
- •Therapeutic Strategies For Reducing Oxidative Stress
- •Overview
- •Antioxidants
- •PKC Inhibitors
- •Inhibitors of the Renin-Angiotensin System
- •Inhibitors of the Polyol Pathway
- •HMG-CoA Reductase Inhibitors (Statins)
- •PEDF
- •Cannabinoids
- •Cyclo-oxygenase-2 (COX-2) Inhibitors
- •References
- •Pericyte Loss in the Diabetic Retina
- •Introduction
- •Origin and Differentiation
- •Morphology and Distribution
- •Identification
- •Function
- •Contractility
- •Role in Vessel Formation and Stabilization
- •Loss In Diabetic Retinopathy
- •Rats
- •Mice
- •Chinese Hamster
- •Animal Models Mimicking Retinal Pericyte Loss
- •Pdgf-B-Pdgf-Ssr
- •Angiopoietin-Tie
- •Vegf-Vegfr2
- •Mechanisms of Loss
- •Biochemical Pathways
- •Aldose Reductase
- •Age Formation
- •Modification of Ldl
- •Loss Through Active Elimination
- •Capillary Dropout in Diabetic Retinopathy
- •Diabetic Retinopathy
- •Methods to Measure and Detect Capillary Dropout
- •Models to Study Retinal Capillary Dropout in Diabetes
- •Potential Mechanisms For Capillary Dropout
- •Capillary Cell Apoptosis
- •Proinflammatory Changes/Leukostasis
- •Microthrombosis/Platelet Aggregation
- •Consequences of Capillary Dropout
- •Macular Ischemia
- •Neovascularization
- •Macular Edema
- •Acknowledgments
- •References
- •Neuroglial Dysfunction in Diabetic Retinopathy
- •The Neurons of The Retina
- •The Glial Cells of The Retina
- •Diabetes Reduces Retinal Function
- •Diabetes Induces Neurodegeneration in The Retina
- •Neuroinflammation in Diabetic Retinopathy
- •Historical Perspective on Diabetic Retinopathy
- •Neuroglial Dysfunction in Diabetic Retinopathy.
- •References
- •Introduction
- •Inflammatory Cells Promote and Regulate The Development of Ischemic Ocular Neovascularization
- •VEGF as a Proinflammatory Factor in Diabetic Retinopathy
- •VEGF164/165 as a Proinflammatory Cytokine
- •Nonsteroidal Anti-inflammatory Drugs (NSAIDs)
- •Corticosteroids
- •Anti-VEGF Agents
- •Pegaptanib
- •Ranibizumab and Bevacizumab
- •Conclusions
- •Acknowledgment
- •References
- •Glia-Endothelial Interaction
- •Specialized Retinal Vessels Control Flux into Neural Tissue
- •Overview of Tight Junction Proteins
- •Claudins Confer Tight Junction Barrier Properties
- •Occludin Regulates Barrier Properties
- •Alterations in Occludin in Diabetic Retinopathy
- •Ve-Cadherin and Diabetic Retinopathy
- •Permeability in Diabetic Retinopathy
- •Summary and Conclusions
- •References
- •Introduction
- •Stages of Angiogenesis
- •Vascular Endothelial Growth Factor
- •Regulation of Vegf Expression in The Retina
- •Regulation of VEGF in Proliferative Diabetic Retinopathy
- •Regulation of VEGF in Nonproliferative Diabetic Retinopathy
- •Basic Vegf Biology
- •Receptors
- •Vegf’S Multiple Actions on Retinal Endothelial Cells
- •Main Signaling Pathways
- •Other Actions of Vegf
- •Proinflammatory Effects of VEGF
- •VEGF and Retinal Neuronal Development
- •VEGF and Neuroprotection
- •Modulation of Vegf Action By Other Growth Factors
- •Conclusion
- •References
- •Insulin-Like Growth Factor
- •Basic Fibroblast Growth Factor
- •Angiopoietin
- •Erythropoietin
- •Hepatocyte Growth Factor
- •Tumor Necrosis Factor
- •Extracellular Proteinases
- •The Urokinase Plasminogen Activator System (uPA/uPAR System)
- •Proteinases in Retinal Neovascularization
- •Integrins
- •Endogenous Inhibitors of Neovascularization
- •Pigment Epithelium Derived Growth Factor
- •Angiostatin and Endostatin
- •Thrombospondin-1
- •Tissue Inhibitor of Matrix Metalloproteinases
- •Clinical Implications
- •Acknowledgments
- •References
- •Introduction
- •Pathogenesis
- •Vascular Endothelial Growth Factor (Vegf)
- •Vegf in Physiological and Pathological Angiogenesis
- •Vegf in Ocular Neovascularization
- •Vegf and Diabetic Retinopathy
- •Clinical Application of Anti-VEGF Drugs
- •Pegaptanib
- •Bevacizumab
- •Ranibizumab
- •Use of Anti-VEGF Therapies in Diabetic Retinopathy
- •Safety
- •Clinical Experience with Bevacizumab in Diabetic Retinopathy
- •Ranibizumab in Diabetic Macular Edema
- •Effect on Foveal Thickness and Macular Volume
- •Effect on Visual Acuity
- •Summary
- •References
- •Introduction
- •Pkc Inhibition With Ruboxistaurin
- •Early Clinical Trials With Rbx
- •Rbx and Progression of Diabetic Retinopathy
- •Ongoing Trials With Rbx
- •Rbx and Other, Nonocular Complications of Diabetes
- •Safety Profile of Rbx
- •Clinical Status of Rbx
- •Conclusions
- •References
- •The Role of Intravitreal Steroids in the Management of Diabetic Retinopathy
- •Clinical Efficacy
- •Safety
- •Pharmacology
- •Pharmacokinetics
- •Combination With Laser Treatment
- •Clinical Guidelines
- •Macular Edema Caused by Focal Parafoveal Leak
- •Widespread Heavy Diffuse Leak
- •Macular Edema and High-Risk Proliferative Retinopathy
- •Macular Edema Prior to Cataract Surgery
- •Juxtafoveal Hard Exudate With Heavy Leak
- •Control of Systemic Risk Factors
- •The Future of Intravitreal Steroid Therapy
- •References
- •Overview
- •Introduction and Historical Perspective
- •Growth Hormone and Diabetic Retinopathy
- •The IGF-1 System and Retinopathy
- •The Role of SST in Diabetic Retinopathy
- •Rationale for the Clinical use of Octreotide
- •Clinical evidence for sst as a therapeutic for pdr
- •Potential Reasons for Mixed Success in Clinical Trials
- •Future Direction: Sst Analogs in Combination Therapy
- •Conclusion
- •Acknowledgements
- •Introduction
- •Diabetic Retinopathy and Mortality
- •Diabetic Retinopathy and Cerebrovascular Disease
- •Diabetic Retinopathy and Heart Disease
- •Diabetic Retinopathy, Nephropathy, and Neuropathy
- •Conclusion
- •References
- •Name Index
Contents
Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
v |
|
Elia J. Duh |
|
|
Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
ix |
|
PART I CLINICAL ASPECTS OF DIABETIC RETINOPATHY |
|
|
1 |
Nonproliferative Diabetic Retinopathy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
3 |
|
Catherine B. Meyerle, Emily Y. Chew, and Frederick L. Ferris III |
|
2 |
Proliferative Diabetic Retinopathy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
29 |
|
Ronald P. Danis and Matthew D. Davis |
|
3 |
The Epidemiology of Diabetic Retinopathy . . . . . . . . . . . . . . . . . . . . . . . . . . |
67 |
|
Ronald Klein |
|
4 |
Diagnostic Modalities in Diabetic Retinopathy . . . . . . . . . . . . . . . . . . . . . . . |
109 |
|
Ron Margolis and Peter K. Kaiser |
|
PART II PATHOPHYSIOLOGY / BASIC RESEARCH |
|
|
5 |
In Vivo Models of Diabetic Retinopathy . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
137 |
|
Timothy S. Kern |
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A PATHWAYS OF HYPERGLYCEMIA-INDUCED DAMAGE |
|
|
6 |
The Polyol Pathway and Diabetic Retinopathy . . . . . . . . . . . . . . . . . . . . . . . |
159 |
|
Mara Lorenzi and Peter J. Oates |
|
7 |
The Role of Advanced Glycation in Diabetic Retinopathy . . . . . . . . . . . . . . |
187 |
|
Alan W. Stitt |
|
8 |
The Role of Protein Kinase C in Diabetic Retinopathy . . . . . . . . . . . . . . . . . |
207 |
|
Manvi Prakash, Jennifer K. Sun, and George L. King |
|
9 |
Oxidative Stress in Diabetic Retinopathy . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
217 |
|
Ruth B. Caldwell, Azza E.B. El-Remessy, and Robert W. Caldwell |
|
B PATHOPHYSIOLOGICAL PROCESS IN DIABETIC RETINOPATHY |
|
|
10 |
Pericyte Loss in the Diabetic Retina. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
245 |
|
Frederick Pfister, Yuxi Feng, and Hans-Peter Hammes |
|
vii
viii |
Contents |
11 Capillary Dropout in Diabetic Retinopathy . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Renu A. Kowluru and Pooi-See Chan
12 Neuroglial Dysfunction in Diabetic Retinopathy . . . . . . . . . . . . . . . . . . . . . . 283
Heather D. VanGuilder, Thomas W. Gardner, and Alistair J. Barber
13 The Role of Inflammation in the Pathophysiology
of Diabetic Retinopathy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303
Lauren E. Swenarchuk, Linda E. Whetter, and Anthony P. Adamis
14 Vascular Permeability in Diabetic Retinopathy . . . . . . . . . . . . . . . . . . . . . . . 333
David A. Antonetti, Heather D. VanGuilder, and Cheng Mao-Lin
15 Retinal Neovascularization and the Role of VEGF . . . . . . . . . . . . . . . . . . . . 353
Elia J. Duh
16Beyond VEGF – Other Factors Important
in Retinal Neovascularization: Potential Targets
in Proliferative Diabetic Retinopathy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 375
Arup Das, Deepti Navaratna, and Paul G. McGuire
PART III EMERGING TREATMENTS AND CONCEPTS IN DIABETIC RETINOPATHY
17 Anti-VEGF Therapy as an Emerging Treatment
for Diabetic Retinopathy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 401
Diana V. Do, Julia A. Haller, Anthony P. Adamis,
Carla Striata, Quan Dong Nguyen, Syed Mahmood Shah, and Antonia M. Joussen
18 Clinical Trials in Protein Kinase C-β Inhibition in Diabetic Retinopathy . . . 423
Jennifer K. Sun, Rola Hamam, and Lloyd P. Aiello
19 The Role of Intravitreal Steroids in the Management
of Diabetic Retinopathy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 435
Mark C. Gillies
20 Antagonism of the Growth Hormone
Axis as a Therapeutic Strategy for Diabetic Retinopathy. . . . . . . . . . . . . . . . 449
Alexander V. Ljubimov, Michael Boulton, Sergio Caballero, and Maria B. Grant
21 Diabetic Retinopathy and Systemic Complications . . . . . . . . . . . . . . . . . . . . 466
Ning Cheung and Tien Y. Wong
Name Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 483
Subject Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 489
