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Altered Copper Metabolism As A Theranostic Biomarker In Neurodegeneration | 21907
ISSN: 2161-0460

Journal of Alzheimers Disease & Parkinsonism
Open Access

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Altered copper metabolism as a theranostic biomarker in neurodegeneration

2nd International Conference on Alzheimers Disease and Dementia

Fangyu Peng

ScientificTracks Abstracts: J Alzheimers Dis Parkinsonism

DOI: 10.4172/2161-0460.S1.006

Abstract
Copper is an essential nutrient element, but excess of copper is harmful. Copper homeostasis is tightly regulated by a delicate network of copper transporters and chaperons. Wilson?s disease, or hepatolenticular degeneration, caused by mutation of ATP7B gene is characterized by accumulation of excess copper ions in liver and brain tissues. Positron emission tomography (PET) is a versatile tool for real-time assessment of copper fluxes in vivo noninvasively and quantitatively. Increased accumulation of 64Cu in liver of Atp7b-/- knockout mice, a well-established mouse model of Wilson?s disease, was demonstrated by measuring copper fluxes in vivo with PET/CT using copper-64 chloride (64CuCl2) as a radioactive tracer (64CuCl2-PET/CT). Age-dependent increase of 64Cu radioactivity was detected in the brain of Atp7b-/- knockout mice at 20 weeks of age compared with 64Cu radioactivity in the brains of Atp7b-/- knockout mice at 6 to 12 weeks of age. In addition to hepatolenticular degeneration, emerging body of evidence suggests the role of altered copper metabolism in pathophysiology of Alzheimer?s disease (AD) and other neurodegenerative diseases. Altered copper metabolism may be a useful theranostic biomarker for early diagnosis of AD at preclinical stage with PET/CT using 64CuCl2 as a radioactive tracer. Based on favorable outcome of copper-modulating therapy in clinical management of the patients diagnosed with Wilson?s disease, altered copper metabolism holds potential as a therapeutic target for copper modulating therapy of AD and other neurodegenerative disease associated with disturbance of cerebral copper metabolism.
Biography
Fangyu Peng has graduated from Jiangxi Medical College, China, in 1982 and obtained his PhD in Medical Microbiology and Immunology from University of South Florida, USA, in 1994. He completed his nuclear medicine residency training at University of Connecticut Health Center in 2000, and clinical fellowship in nuclear medicine and molecular imaging at National Institutes of Health Clinical Center in 2003. He is currently Associate Professor of Radiology and Advanced Imaging Research Center, University of Texas Southwestern Medical Center, USA. He has published more than 30 peer-reviewed articles in reputed journals and serving as an editorial board member of Journal of Radiology and Radiation Therapy.
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