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Author: Vickram Ramkumar
Publisher: Springer
ISBN: 3319925075
Category : Medical
Languages : en
Pages : 237
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Book Description
Common forms of preventable hearing loss are drug and noise-induced hearing loss which are believed to be produced by a similar mechanism. The generation of reactive oxygen species appears to be a common mechanism mediating hearing loss produced by these different sources. As such, a number of laboratories have focused their research towards identifying the sources of ROS production in the cochlea following administration of chemotherapeutic agents or noise exposure. This led to the identification of ROS generating enzymes, such as xanthine oxidases, nitric oxide synthase, and NADPH oxidases which are activated and/or induced during the development of hearing loss. A consequence of these findings was the implementation of antioxidants in preclinical studies for the treatment of hearing loss. These antioxidants have provided different levels of protection in animal and human studies, but none of these have been approved by the US Food and Drug Administration for the treatment of hearing loss. More recently, it was shown that noise-induced hearing loss was associated with recruitment of inflammatory cells and mediators in the cochlea. This finding would suggest that noise could produce injury to the cochlea which stimulates local and/or circulating inflammatory cells. A similar finding was observed in the cochlea following administration of the anticancer drug, cisplatin. In addition, our laboratory and others have provided a plausible mechanism by which noise or chemotherapeutic agents could stimulate the inflammatory response. Surprisingly, this mechanism involves ROS activation of transcription factors linked to inflammatory processes in the cochlea. These studies have led to the use of anti-inflammatory agents for the treatment of hearing loss. Preliminary studies targeting inflammatory cytokines appear especially promising in preclinical studies. A primary goal of this project is to describe our current understanding of the oxidant hypothesis of noise and drug-induced hearing loss and show how this relates to cochlear inflammation. Several different aspects of the cochlear inflammatory process will be discussed in detail, ranging from the sources of inflammatory cells, chemokines, inflammatory cytokines, and cochlea resident immune cells. Molecular pathways leading to activation of the local inflammatory process will be highlighted and treatment options will be discussed. The relevance of certain clinically used anti-inflammatory interventions, such as trans-typmanic steroids will also be discussed. Furthermore, we will examine recent patents focusing on the use of anti-inflammatory agents for the treatment of drug and noise-induced hearing loss.
Author: Vickram Ramkumar
Publisher: Springer
ISBN: 3319925075
Category : Medical
Languages : en
Pages : 237
Get Book Here
Book Description
Common forms of preventable hearing loss are drug and noise-induced hearing loss which are believed to be produced by a similar mechanism. The generation of reactive oxygen species appears to be a common mechanism mediating hearing loss produced by these different sources. As such, a number of laboratories have focused their research towards identifying the sources of ROS production in the cochlea following administration of chemotherapeutic agents or noise exposure. This led to the identification of ROS generating enzymes, such as xanthine oxidases, nitric oxide synthase, and NADPH oxidases which are activated and/or induced during the development of hearing loss. A consequence of these findings was the implementation of antioxidants in preclinical studies for the treatment of hearing loss. These antioxidants have provided different levels of protection in animal and human studies, but none of these have been approved by the US Food and Drug Administration for the treatment of hearing loss. More recently, it was shown that noise-induced hearing loss was associated with recruitment of inflammatory cells and mediators in the cochlea. This finding would suggest that noise could produce injury to the cochlea which stimulates local and/or circulating inflammatory cells. A similar finding was observed in the cochlea following administration of the anticancer drug, cisplatin. In addition, our laboratory and others have provided a plausible mechanism by which noise or chemotherapeutic agents could stimulate the inflammatory response. Surprisingly, this mechanism involves ROS activation of transcription factors linked to inflammatory processes in the cochlea. These studies have led to the use of anti-inflammatory agents for the treatment of hearing loss. Preliminary studies targeting inflammatory cytokines appear especially promising in preclinical studies. A primary goal of this project is to describe our current understanding of the oxidant hypothesis of noise and drug-induced hearing loss and show how this relates to cochlear inflammation. Several different aspects of the cochlear inflammatory process will be discussed in detail, ranging from the sources of inflammatory cells, chemokines, inflammatory cytokines, and cochlea resident immune cells. Molecular pathways leading to activation of the local inflammatory process will be highlighted and treatment options will be discussed. The relevance of certain clinically used anti-inflammatory interventions, such as trans-typmanic steroids will also be discussed. Furthermore, we will examine recent patents focusing on the use of anti-inflammatory agents for the treatment of drug and noise-induced hearing loss.
Author: B. Vona
Publisher: Karger Medical and Scientific Publishers
ISBN: 3318058564
Category : Medical
Languages : en
Pages : 158
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Book Description
Genetics of Deafness offers a journey through areas crucial for understanding the causes and effects of hearing loss. It covers such topics as the latest approaches in diagnostics and deafness research and the current status and future promise of gene therapy for hearing restoration. The book begins by bringing attention to how hearing loss affects the individual and society. Methods of hearing loss detection and management throughout the lifespan are highlighted as is a particularly new development in newborn hearing screening. The challenges of hearing loss, an extremely heterogeneous impairment, are addressed. Additional topics include current research interests, ranging from novel gene identification to their functional validation in the mouse and zebrafish. The book ends with a chapter on the state of the art of gene therapy—an area that is certain to gain increasing attention as molecular mechanisms of deafness are better understood. Genetics of Deafness, written by leading authors in the field, is a must read for clinicians, researchers, and students. It provides much needed insight into the diagnosis and research of hereditary hearing loss.
Author: Jolanta Dorszewska
Publisher: Frontiers Media SA
ISBN: 2889717321
Category : Science
Languages : en
Pages : 316
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Book Description
Author: Huawei Li
Publisher: Springer
ISBN: 9811361231
Category : Medical
Languages : en
Pages : 182
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Book Description
This book systematically discusses the pathogenesis, prevention, and the current and potential clinical treatment of hearing loss, as well as the latest advances in hearing research. Hearing loss is a prevalent sensory disorder, which according to a 2015 World Health Organization (WHO) report affected 9% of the global population in 2015. As populations continue to age, more and more people are suffering from the condition, with 60% of those aged between 65 and 75 affected. Hearing loss seriously affects patients’ ability to work ability and quality of life, and as such deafness has become an increasingly urgent social problem around the globe. Sensorineural hearing loss is mainly caused by damage to the hair cells (HCs), and the subsequent loss of spiral ganglion neurons (SGNs). Damage to the HCs in the inner ear can result from exposure to loud noises and environmental and chemical toxins as well as genetic disorders, aging, and certain medications. This book provides ENT specialists and researchers, as well as individuals affected a comprehensive introduction to the field of hearing loss.
Author: Harold Frederick Schuknecht
Publisher:
ISBN: 9780783741895
Category :
Languages : en
Pages : 521
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Book Description
Through a combination of text, color pictures, and numerous bandw illustrations, the pathology of the human ear is presented with a practical, clinical approach, primarily for practicing otologists. The volume encompasses the entire field of otology, beginning with the basics of laboratory methodology, anatomy, and pathophysiology, and continuing with otopathology in 15 chapters organized as logical compendia based on clinical and pathological manifestations. Extensively rewritten because of the substantial growth in knowledge that has occurred in temporal bone pathology and clinical otology, this edition (first was 1974) also adds two new chapters on disorders of the immune system and surgical pathology. 9.25x12.25" Annotation copyright by Book News, Inc., Portland, OR
Author: Guillermo Plaza
Publisher: Springer Nature
ISBN: 3031613856
Category :
Languages : en
Pages : 162
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Book Description
Author: Steven P. Roose M.D.
Publisher: Oxford University Press
ISBN: 0198034849
Category : Medical
Languages : en
Pages : 417
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Book Description
We live in an aging world. Illnesses that are prevalent and cause significant morbidity and mortality in older people will consume an increasing share of health care resources. One such illness is depression. This illness has a particularly devastating impact in the elderly because it is often undiagnosed or inadequately treated. Depression not only has a profound impact on quality of life but it is associated with an increased risk of mortality from suicide and vascular disease. In fact for every medical illness studied, e.g. heart disease, diabetes, cancer, individuals who are depressed have a worse prognosis. Research has illuminated the physiological and behavioral effects of depression that accounts for these poor outcomes. The deleterious relationship between depression and other illnesses has changed the concept of late-life depression from a "psychiatric disorder" that is diagnosed and treated by a psychiatrist to a common and serious disorder that is the responsibility of all physicians who care for patients over the age of 60. This is the first volume devoted to the epidemiology, phenomenology, psychobiology, treatment and consequences of late-life depression. Although much has been written about depressive disorders, the focus has been primarily on the illness as experienced in younger adults. The effects of aging on the brain, the physiological and behavioral consequences of recurrent depression, and the impact of other diseases common in the elderly, make late-life depression a distinct entity. There is a compelling need for a separate research program, specialized treatments, and a book dedicated to this disorder. This book will be invaluable to psychiatrists, gerontologists, clinical psychologists, social workers, students, trainees, and others who care for individuals over the age of sixty.
Author: Stephen A. Lerner
Publisher: Little, Brown Medical Division
ISBN:
Category : Medical
Languages : en
Pages : 488
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Book Description
Author: Peter S. Steyger
Publisher: Frontiers Media SA
ISBN: 2889454835
Category :
Languages : en
Pages : 292
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Book Description
The auditory perception of sounds (environmental, vocal or music) is one of the 5 principal senses consciously monitored by our brains, and is crucial for many human endeavors as well as quality of life. Loss of optimal performance in this principal sensory system leads to loss of effective communication and intimacy, as well as increased risk of isolation, depression, cognitive decline, and greater vulnerability to predators. The vestibular system ensures that individuals remain upright and effectively monitor their posture within their spatial surroundings, move effectively, and remain focused on visual targets during motion. The loss of vestibular sensitivity results in postural instability, falls, inability to observe the environment during motion, and a debilitating incapacity to function effectively. The sensory cells for both auditory and vestibular systems are located within the inner ear of the temporal bulla. There are many causes of auditory and vestibular deficits, including congenital (or genetic) events, trauma, aging and loud sound exposures. Ototoxicity refers to damage of the auditory or vestibular structures or functions, as the result of exposure to certain pharmaceuticals, chemicals, and/or ionizing radiation exposure that damage the inner ear. Ototoxicity is a major contributor to acquired hearing loss and vestibular deficits, and is entirely preventable. In 2009, the United States Department of Defense initiated the Hearing Center of Excellence (HCE), headquartered in San Antonio, Texas, in response to the prevalence of acquired auditory and vestibular deficits in military and veteran populations. The knowledge shared in this eBook supports the HCE’s mandate to improve aural protection of military and civilian populations worldwide. The last few years have seen significant advances in understanding the cellular mechanisms underlying ototoxic drug-induced hearing loss and vestibular deficits. In this eBook, we present some of these advances and highlight gaps where further research is needed. Selected articles discuss candidate otoprotective agents that can ameliorate the effects of ototoxicity in the context of how they illustrate cellular mechanisms of ototoxicity. Our goal in illustrating these advances in mechanisms of ototoxicity is to accelerate the development of clinical therapies that prevent or reverse this debilitating disorder.
Author: Aage R. Moller
Publisher: Elsevier
ISBN: 0080554466
Category : Medical
Languages : en
Pages : 569
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Book Description
Understanding tinnitus and treating patients with tinnitus must involve many disciplines of basic science and clinical practice. The book provides comprehensive coverage of a wide range of topics related to tinnitus including its pathophysiology, etiology and treatment. The chapters are written by researchers and clinicians who are active in the areas of basic science such as neurophysiology and neuroanatomy and in clinical specialties of psychology, psychiatry, audiology and otolaryngology.* Comprehensive coverage of the pathology and cause of tinnitus including genetics * Hyperacusis, phonophobia and other abnormalities in perception of sounds * The role of neural plasticity in tinnitus
