Lewy bodies are the inclusion bodies – abnormal aggregations of protein – that develop inside neurons affected by Parkinson's disease (PD), the Lewy body dementias, and some other disorders. They are also seen in cases of multiple system atrophy, particularly the parkinsonian variant (MSA-P).
The tau proteins form a group of six highly soluble protein isoforms produced by alternative splicing from the gene MAPT. They have roles primarily in maintaining the stability of microtubules in axons and are abundant in the neurons of the central nervous system (CNS), where the cerebral cortex has the highest abundance. They are less common elsewhere but are also expressed at very low levels in CNS astrocytes and oligodendrocytes.
Neurofibrillary tangles (NFTs) are intracellular aggregates of hyperphosphorylated tau protein that are most commonly known as a primary biomarker of Alzheimer's disease. Their presence is also found in numerous other diseases known as tauopathies. Little is known about their exact relationship to the different pathologies.
Parkinson-plus syndromes (PPS) are a group of neurodegenerative diseases featuring the classical features of Parkinson's disease with additional features that distinguish them from simple idiopathic Parkinson's disease (PD). Parkinson-plus syndromes are either inherited genetically or occur sporadically.
Tauopathies are a class of neurodegenerative diseases characterized by the aggregation of abnormal tau protein. Hyperphosphorylation of tau proteins causes them to dissociate from microtubules and form insoluble aggregates called neurofibrillary tangles. Various neuropathologic phenotypes have been described based on the anatomical regions and cell types involved as well as the unique tau isoforms making up these deposits. The designation 'primary tauopathy' is assigned to disorders where the predominant feature is the deposition of tau protein. Alternatively, diseases exhibiting tau pathologies attributed to different and varied underlying causes are termed 'secondary tauopathies'. Some neuropathologic phenotypes involving tau protein are Alzheimer's disease, frontotemporal dementia, progressive supranuclear palsy, and corticobasal degeneration.
A neurodegenerative disease is caused by the progressive loss of neurons, in the process known as neurodegeneration. Neuronal damage may also ultimately result in their death. Neurodegenerative diseases include amyotrophic lateral sclerosis, multiple sclerosis, Parkinson's disease, Alzheimer's disease, Huntington's disease, multiple system atrophy, tauopathies, and prion diseases. Neurodegeneration can be found in the brain at many different levels of neuronal circuitry, ranging from molecular to systemic. Because there is no known way to reverse the progressive degeneration of neurons, these diseases are considered to be incurable; however research has shown that the two major contributing factors to neurodegeneration are oxidative stress and inflammation. Biomedical research has revealed many similarities between these diseases at the subcellular level, including atypical protein assemblies and induced cell death. These similarities suggest that therapeutic advances against one neurodegenerative disease might ameliorate other diseases as well.
Sir John Anthony Hardy is a human geneticist and molecular biologist at the Reta Lila Weston Institute of Neurological Studies at University College London with research interests in neurological diseases.
Gladstone Institutes is an American independent, non-profit biomedical research organization whose focus is to better understand, prevent, treat and cure cardiovascular, viral and neurological conditions such as heart failure, HIV/AIDS and Alzheimer's disease. Its researchers study these diseases using techniques of basic and translational science. Another focus at Gladstone is building on the development of induced pluripotent stem cell technology by one of its investigators, 2012 Nobel Laureate Shinya Yamanaka, to improve drug discovery, personalized medicine and tissue regeneration.
Andrew B. Singleton is a British neurogeneticist currently working in the USA. He was born in Guernsey, the Channel Islands in 1972, where he lived until he was 18 years old. His secondary education was conducted at the Guernsey Grammar School. He earned a first class degree in Applied Physiology from Sunderland University and his PhD in neuroscience from the University of Newcastle upon Tyne where he studied the genetics of Alzheimer's disease and other dementias at the Medical Research Council (MRC) Neurochemical Pathology Unit. He moved to the United States in 1999, where he began working at the Mayo Clinic in Jacksonville, Florida studying the genetic basis of Parkinson's disease, ataxia, and dystonia. He moved to the National Institutes of Health in 2001 to head the newly formed Molecular Genetics unit within the Laboratory of Neurogenetics. In 2006 he took over as Chief of the Laboratory of Neurogenetics and became an NIH Distinguished Investigator in the intramural program at the National Institute on Aging (NIA) in 2017. In 2020 he stepped down as the Chief of the Laboratory of Neurogenetics and became the Acting Director of the newly formed Center for Alzheimer's and Related Dementias at the NIA. In 2021 he became the Director of CARD.
William W. Seeley is an American neurologist. He is a Professor of Neurology and Pathology at the UCSF Memory and Aging Center at the University of California, San Francisco (UCSF). He leads the Selective Vulnerability Research Lab at UCSF. He is a 2011 MacArthur Fellow.
Michel Goedert FRS, FMedSci is a Luxembourgish-British neuroscientist and former Head of Neurobiology, at the MRC Laboratory of Molecular Biology.
Virginia Man-Yee Lee is a Chinese-born American biochemist and neuroscientist who specializes in the research of Alzheimer's disease. She is the current John H. Ware 3rd Endowed Professor in Alzheimer's Research at the Department of Pathology and Laboratory Medicine, and the director of the Center for Neurodegenerative Disease Research and co-director of the Marian S. Ware Alzheimer Drug Discovery Program at the Perelman School of Medicine, University of Pennsylvania. She received the 2020 Breakthrough Prize in Life Sciences.
Giovanna Rachele Mallucci is van Geest Professor of Clinical Neurosciences at the University of Cambridge in England and associate director of the UK Dementia Research Institute at the University of Cambridge. She is a specialist in neurodegenerative diseases.
Benjamin Wolozin is an American pharmacologist and neurologist currently at Boston University School of Medicine. He is also an Elected Fellow of the American Association for the Advancement of Science.
Nancy M. Bonini is an American neuroscientist and geneticist, best known for pioneering the use of Drosophila as a model organism to study neurodegeneration of the human brain. Using the Drosophila model approach, Bonini's laboratory has identified genes and pathways that are important in the development and progression of neurodegenerative diseases such as Amyotrophic lateral sclerosis, Alzheimer's disease, and Parkinson's disease, as well as aging, neural injury and regeneration, and response to environmental toxins.
Lary Walker is an American neuroscientist and researcher at Emory University in Atlanta, Georgia. He is Associate Director of the Goizueta Alzheimer's Disease Research Center at Emory, and he is known for his research on the role of abnormal proteins in the causation of Alzheimer's disease.
Dennis J. Selkoe is an American physician (neurologist) known for his research into the molecular basis of Alzheimer's disease. In 1985 he became Co-Director of the Center for Neurological Diseases and from 1990, Vincent and Stella Coates Professor of Neurological Diseases at Harvard Medical School. He is also a Fellow of the AAAS and a member of the National Academy of Medicine.
Mel B. Feany is an American neuropathologist and geneticist at Brigham and Women's Hospital who researches neurodegenerative disease. She is a co-editor of the Annual Review of Pathology: Mechanisms of Disease.
Gerard David Schellenberg is an academic neuropathologist who specializes in the research of Alzheimer's disease. He is the director of Penn Neurodegeneration Genomics Center as well as a professor of Pathology and Laboratory Medicine at the University of Pennsylvania. He is a leading contributor to Alzheimer's disease research.
