On The Development Of Animal Models For Degenerative Retinal Disease

Affecting over a hundred million individuals worldwide, retinal diseases are among the leading causes of irreversible visual impairment and blindness, and appropriate study models, especially animal models, are essential to furthering our understanding of the etiology, pathology, and progression of these endemic diseases. In Animal Models for Retinal Diseases, recognized experts in the field highlight valuable techniques as well as animal models for the prominent retinal diseases in order to aid in the evaluation, development, and improvement of therapeutic strategies. Beginning with an overview of the morphology of the retina, visual behavior, and genetics and genomics approaches for retinal research, the book continues by covering animal models for the research of specific human retinal diseases, e.g., retinal degeneration, age-related macular degeneration, retinopathy of prematurity, diabetic retinopathy, glaucoma, retinal ischemia, and retinal inflammation. As a volume in the successful Neuromethods series, the chapters provide authoritative reviews of the most commonly used approaches in the field. Vital and easy to use, Animal Models for Retinal Diseases serves to support the important future research of ocular investigators, ophthalmologists, and neuroscientists currently delving into this fascinating field of study.

Age-related macular degeneration (AMD) is a degenerative condition that begins in Bruch’s membrane and progresses to involve the retinal pigment epithelium and ultimately, overlying photoreceptors. The only required etiologic factor is age, and AMD is regarded as the leading cause of blindness in individuals over 65 years. AMD results from variable contributions of age, environment, and genetic predisposition. Many loci are linked to AMD—in the vast majority of cases, the disease is associated with polymorphisms within these genes, rather than mutations that ablate gene function. The etiologic complexity of AMD is reflected by the paucity of animal models that entirely replicate the human disease. In this review, we compare the salient anatomy of the primate and rodent retina, particularly in the light of AMD pathology. Next, prevailing hypotheses explaining how AMD may develop are discussed. These include the role of complement activation and macrophage chemotaxis in AMD, molecular mechanisms of choroidal neovascularization, and the roles of oxidative damage and lipid metabolism. An overview of spontaneous and induced non-human primate models is given, and relevant mouse models are described in the context of each pathogenetic mechanism.

The eye is a complex sensory organ, which enables visual perception of the world. Thus the eye has several tissues that do different tasks. One of the most basic aspects of eye function is the sensitivity of cells to light and its transduction though the optic nerve to the brain. Different organisms use different ways to achieve these tasks. In this sense, eye function becomes a very important evolutionary aspect as well. This book presents the different animal models that are commonly used for eye research and their uniqueness in evaluating different aspects of eye development, evolution, physiology and disease. Presents information on the major animal models used in eye research including invertebrates and vertebrates Provides researchers with information needed to choose between model organisms Includes an introductory chapter on the different types of eyes, stressing possible common molecular machinery

This book describes experimental animal models that mimic common human ocular diseases: herpetic keratitis, cataract, glaucoma, age-related macular degeneration, diabetic retinopathy, uveitis, retinitis pigmentosa, Graves’ disease, and intraocular tumors. In conjunction, these models reflect the diversity and utility of tools used to study human disease. World expert clinicians discuss each model based on their clinical experience and the text is supported by numerous photos and diagrams. In describing the most pertinent animal models of ophthalmic diseases, this book will be of interest to ophthalmologists, vision researchers, fellows, residents and medical students.

This book will contain the proceedings of the XIV International Symposium on Retinal Degeneration (RD2010), held July 13-17, 2010, in Mont-Tremblant, Quebec, Canada. The volume will present representative state-of-the-art research in almost all areas of retinal degenerations, ranging from cytopathologic, physiologic, diagnostic and clinical aspects; animal models; mechanisms of cell death; candidate genes, cloning, mapping and other aspects of molecular genetics; and developing potential therapeutic measures such as gene therapy and neuroprotective agents for potential pharmaceutical therapy.

Retinal dystrophies are the major causes of incurable blindness in the Western world. Our insight into their aetiology has improved remarkably over the past decade and a number of key genes have been identified. Together with a more detailed understanding of disease processes, this knowledge is stimulating new approaches to therapeutic strategies involving gene therapy, growth factors and retinal cell transplantation. Molecular genetic studies have provided detailed information on the pathogenesis of retinal dystrophies. An important proof of principle that gene therapy holds great promise for the treatment of these conditions was demonstrated in the rds mouse: introduction of a functional copy of the peripherin gene subretinally resulted in complete rescue of rod outer segment structure. Novel approaches are being developed based on the manipulation of biochemical pathways that previously were not considered relevant to these diseases. For example, renewed interest in retinal dystrophy pathogenesis led to the successful use of high dose vitamin A treatment in Sorsby fundus dystrophy. This important new book covers all aspects of retinal dystrophies from the molecular and developmental biology of these disorders to possible therapeutic approaches, with special reference to gene therapy. Specific chapters deal with the molecular genetics of gene therapies, clinical genetic studies, molecular and cellular mechanisms of the development of the disease, functional genomics of retinal diseases, animal models of retinal dystrophies, and finally with studies on gene therapeutic approaches to correcting the disorder. With contributions by many of the leading researchers worldwide, this book is likely to be an important milestone in this rapidly developing field.