BACKGROUND AND PURPOSE Early white matter (WM) changes and cortical atrophy in Huntington's disease (HD) are often evident before disease onset and extend through the brain during manifest stages. The trajectory of these brain abnormalities in symptomatic stages remains relatively unexplored. The aim of this study is to investigate how the pattern of WM and gray matter (GM) alterations progress over time. METHODS We investigated alterations in brain WM, cortical thickness, and subcortical structures using diffusion and structural magnetic resonance imaging, in manifest HD patients (n = 13) compared to age-matched healthy controls (n = 11). Imaging and clinical data for the HD group were collected at follow-up (7 months) to explore possible longitudinal changes. RESULTS Cross-sectional analyses identified significant posterior cortical thinning (P less then .05) and symmetric fractional anisotropy (FA) reduction (P less then .01) in brain WM of HD group compared to HC. BODIPY493/503 These changes were strongly correlated with impairment in motor symptoms and processing speed. Subcortical atrophy was significant in caudate, putamen, globus pallidus, and thalamus (P less then .001). Regions of interest analysis revealed a significant reduction in FA of the corpus callosum (CC) (-2.19%, P less then .05) upon follow-up, whereas no significant cortical thinning and subcortical atrophy was found. CONCLUSIONS This study showed broad GM and WM abnormalities in manifest HD patients. Reductions in FA and cortical thinning correlated significantly with the disturbances of motor and cognitive processing that describe HD. Follow-up assessment showed that the CC is compromised in the absence of detectable GM changes or motor decline, suggesting it plays an important role in disease progression. © 2020 by the American Society of Neuroimaging.The Island of Borneo is a major biodiversity hotspot, and in the Malaysian state of Sabah, ultramafic soils are extensive and home to more than 31 endemic nickel hyperaccumulator plants. The aim of this study was to characterize the structure and the diversity of the rhizosphere bacterial communities of several of these nickel hyperaccumulator plants and factors that affect these bacterial communities in Sabah. The most abundant phyla were Proteobacteria, Acidobacteria and Actinobacteria. At family level, Burkholderiaceae and Xanthobacteraceae (Proteobacteria phylum) were the most abundant families in the hyperaccumulator rhizospheres. Redundancy analysis based on soil chemical analyses and relative abundances of the major bacterial phyla showed that abiotic factors of the studied sites drove the bacterial diversity. For all R. aff. bengalensis rhizosphere soil samples, irrespective of studied site, the bacterial diversity was similar. Moreover, the Saprospiraceae family showed a high representativeness in the R. aff. bengalensis rhizosphere soils and was linked with the nickel availability in soils. The ability of R. aff. bengalensis to concentrate nickel in its rhizosphere appears to be the major factor driving the rhizobacterial community diversity unlike for other hyperaccumulator species. © 2020 Society for Applied Microbiology and John Wiley & Sons Ltd.Actively collecting the mechanical energy by efficient conversion to other forms of energy such as light opens a new possibility of energy-saving, which is of pivotal significance for supplying potential solutions for the present energy crisis. Such energy conversion has shown promising applications in modern sensors, actuators, and energy harvesting. However, the implementation of such technologies is being hindered because most luminescent materials show weak and non-recoverable emissions under mechanical excitation. Herein, a new class of heterojunctioned ZnS/CaZnOS piezophotonic systems is presented, which displays highly reproducible mechanoluminescence (ML) with an unprecedented intensity of over two times higher than that of the widely used commercial ZnS (the state-of-the-art ML material). Density functional theory calculations reveal that the high-performance ML originates from efficient charge transfer and recombination through offset of the valence and conduction bands in the heterojunction interface region. By controlling the ZnS-to-CaZnOS ratio in conjunction with manganese (Mn2+ ) and lanthanide (Ln3+ ) doping, tunable ML across the full spectrum is activated by a small mechanical stimulus of 1 N (10 kPa). The findings demonstrate a novel strategy for constructing efficient ML materials by leveraging interface effects and ultimately promoting practical applications for ML. © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.AIMS The current study sought to assess the impact of the utilized energy source during index ablation on long-term clinical outcomes after repeat ablation of atrial fibrillation (AF). Index ablation procedures were either performed using radiofrequency current (RFC) (RFC group) or cryoballoon (CB) ablation (CB group). Repeat ablation was performed by the use of RFC. METHODS A total of 195 patients (138 RFC group; 57 CB group) with paroxysmal AF were included. All patients had a recurrence of AF following the index ablation procedure. Freedom from AF was estimated with the Kaplan-Meier method. RESULTS After a 3 years follow-up, the estimated arrhythmia-free survival did not differ between the two groups (RFC group 48% vs CB group 47%, P = .78). During index ablation, procedure times were significantly shorter in the CB group (95 [80, 140] vs 140 [115, 164] minutes, P ≤ .001), whereas fluoroscopy times (16 [11; 22] vs 19 [14; 25] minutes, P = .003), the dose area product (1862 [1203; 2922] vs 3148 [1756; 5888] cGycm2 , P ≤ .001) and the amount of contrast dye (92 ± 32 vs 123 ± 33 mL, P ≤ .001) were significantly lower in the RFC group. During repeat ablation, procedure times were significantly shorter in patients being initially treated with RFC (115 [85; 145] vs 125 [105; 150] minutes, P = .007). There was a trend towards a higher pulmonary vein reconnection rate in the RFC group without meeting statistical significance (P = .074). CONCLUSIONS In patients with repeat ablation of AF, index RFC or CB ablation are equally effective in terms of freedom from AF. Although CB ablation results in shorter index procedures times, durations of repeat ablation are significantly longer. © 2020 The Authors. Journal of Cardiovascular Electrophysiology published by Wiley Periodicals, Inc.BODIPY493/503
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