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The role of sequestosome 1/p62 protein in amyotrophic lateral sclerosis and frontotemporal dementia pathogenesis

Neural Regeneration Research 2020年第12期15卷 2186-2194页

作者： adriana delice foster Sarah Lyn Rea Harry Perkins Institute of Medical Research University of Western Australia Perron Institute for Neurological and Translational Science Centre for Neuromuscular and Neurological DisordersThe University of Western AustraliaNedlandsWestern AustraliaAustralia Centre for Molecular Medicine and Innovative Therapeutics Murdoch University Murdoch Western Australia Australia

Amyotrophic lateral sclerosis and frontotemporal lobar degeneration are multifaceted diseases with genotypic,pathological and clinical *** such overlap is the presence of SQSTM1/p62 *** traditionally mutations manifesting in the ubiquitin-associated domain of p62 were associated with Paget’s disease of bone,mutations affecting all functional domains of p62 have now been identified in amyotrophic lateral sclerosis and frontotemporal lobar degeneration patients.p62 is a multifunctional protein that facilitates protein degradation through autophagy and the ubiquitin-proteasome system,and also regulates cell survival via the Nrf2 antioxidant response pathway,the nuclear factor-kappa B signaling pathway and *** in these signaling and protein degradation pathways have been observed in amyotrophic lateral sclerosis and frontotemporal lobar degeneration,and mutations that affect the role of p62 in these pathways may contribute to disease *** this review we discuss the role of p62 in these pathways,the effects of p62 mutations and the effect of mutations in the p62 modulator TANK-binding kinase 1,in relation to amyotrophic lateral sclerosis-frontotemporal lobar degeneration pathogenesis.

关键词： aggregate/inclusion body formation amyotrophic lateral sclerosis-frontotemporal lobar degeneration autophagy cell signaling mitophagy p62/SQSTM1 protein degradation

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Low temperature thermoluminescence behaviour of Y_2O_3 nanoparticles

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Journal of Rare Earths 2019年第1期37卷 19-23,M0002页

作者： S.delice M.Isik N.M.Gasanly Department of Physics Hitit University Department of Electrical and Electronics Engineering Atilim University Department of Physics Middle East Technical University Virtual International Scientific Research Centre Baku State University

Y_2O_3 nanoparticles were investigated using low temperature thermoluminescence (TL) experiments. TL glow curve recorded at constant heating rate of 0.4 K/s exhibits seven peaks around 19, 62, 91,115,162,196 and 215 K. Activation energies and characteristics of traps responsible for observed curves were revealed under the light of results of initial rise analyses and T_(max)-T_(stop) experimental methods. Analyses of TL curves obtained at different stopping temperatures resulted in presence of one quasi-continuously distributed trap with activation energies increasing from 18 to 24 meV and six single trapping centers at49, 117, 315, 409, 651 and 740 meV. Activation energies of all revealed centers were reported in the present paper. Structural characterization of Y_2O_3 nanoparticles was accomplished using X-ray diffraction and scanning electron microscopy measurements.

关键词： Y2O3 Luminescence Thermoluminescence Defects Rare earths

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