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7篇 您的检索式:作者名="Michael MacAskill"
    题名 作者 年代 出处 被引量
1Reduced striatal volumes in Parkinson’s disease:a magnetic resonance imaging study显示文摘Background:The presence and extent of structural changes in the brain as a consequence of Parkinson’s disease(PD)is still poorly understood.Methods:High-resolution 3-tesla T1-weighted structural magnetic resonance images in sixty-five PD and 27 age-matched healthy control participants were examined.Putamen,caudate,and intracranial volumes were manually traced in the axial plane of 3D reconstructed images.Striatal nuclei volumes were normalized to intracranial volume for statistical comparison.Disease status was assessed using the Unified Parkinson’s Disease Rating Scale and Hoehn and Yahr scale.Cognitive status was assessed using global status tests and detailed neuropsychological testing.Results:Both caudate and putamen volumes were smaller in PD brains compared to controls after adjusting for age and gender.Caudate volumes were reduced by 11%(p=0.001)and putamen volumes by 8.1%(p=0.025).PD striatal volumes were not found to be significantly correlated with cognitive or motor decline.Conclusion:Small,but significant reductions in the volume of both the caudate and putamen occur in PD brains.These reductions are independent of the effects of age and gender,however the relation of these reductions to the functional loss of dopamine,which is characteristic of PD,remains unclear.Toni L Pitcher Tracy R Melzer Michael R MacAskill Charlotte F Graham Leslie Livingston Ross J Keenan Richard Watts John C Dalrymple-Alford Tim J Anderson 2012Translational Neurodegeneration2012,1,1:2
2Caregiver burden is increased in Parkinson’s disease with mild cognitive impairment (PD-MCI)显示文摘Background:There is limited evidence on caregiver outcomes associated with mild cognitive impairment in patients with Parkinson’s disease(PD-MCI)and the coping strategies used by these caregivers.Methods:To investigate this relationship,we examined levels of burden,depression,anxiety,coping strategies and positive aspects of caregiving in the informal caregivers of 96 PD patients.The PD patients were classified using MDS-Task Force Level II criteria as showing either normal cognition(PD-N;n=51),PD-MCI(n=30)or with dementia(PDD;n=15).Results:Mean Zarit Burden Interview(ZBI)score increased significantly between carers of PD-N(M=13.39,SD=12.22)compared to those of PD-MCI patients(M=22.00,SD=10.8),and between carers of PD-MCI and PDD patients(M=29.33,SD=9.59).Moreover,the proportion of carers showing clinically significant levels of burden(ZBI score≥21)also increased as the patients’cognitive status declined(18% for PD-N;60% for PD-MCI;and 80%for PDD)and was mirrored by an increasing amount of time spent providing care by the caregivers.Caregiver ZBI score was independent of patient neuropsychiatric symptoms,motor function,disease duration and time that caregivers spent caregiving.Caregiver use of different coping strategies increased with worsening cognition.However,we found only equivocal evidence that the use of problem-focused,emotion-focused and dysfunctional coping mediated the association between patient cognitive status and caregiver burden,because the inverse models that used caregiver burden as the mediator were also significant.Conclusions:The study highlights the impact of Parkinson’s disease on those providing care when the patient’s cognition is poor,including those with MCI.Caregiver well-being has important implications for caregiver support,nursing home placement and disease course.Ann J.Jones Roeline G.Kuijer Leslie Livingston Daniel Myall Kyla Horne Michael MacAskill Toni Pitcher Paul T.Barrett Tim J.Anderson John C.Dalrymple-Alford 2017Translational Neurodegeneration2017,6,1:2
3Meta-analytic methods for diagnostic test accuracy显示文摘Les Irwig Petra Macaskill Paul Glasziou Michael Fahey 1995Journal of Clinical Epidemiology1995,,1:1
4A study of the effects of the aromatase inhibitors anastrozole and letrozole on bone metabolism in postmenopausal women with estrogen receptor-positive breast cancer显示文摘Fiona M. McCaig Lorna Renshaw Linda Williams Oliver Young Juliette Murray Elizabeth J. Macaskill Mary McHugh Rosemary Hannon J. Michael Dixon 2010Breast Cancer Research and Treatment2010,,:1
5Gene expression profiling of response to mTOR inhibitor everolimus in pre-operatively treated post-menopausal women with oestrogen receptor-positive breast cancer显示文摘Vicky S. Sabine Andrew H. Sims E. Jane Macaskill Lorna Renshaw Jeremy S. Thomas J. Michael Dixon John M. S. Bartlett 2010Breast Cancer Research and Treatment2010,,2:1
6Meta-analytic methods for diagnostic test accuracy显示文摘Les Irwig Petra Macaskill Paul Glasziou Michael Fahey 1995Journal of Clinical Epidemiology1995,,1:1
7Comparison of cognitive and UHDRS measures in monitoring disease progression in Huntington’s disease: a 12-month longitudinal study显示文摘Progressive cognitive decline is a feature of Huntington’s disease(HD),an inherited neurodegenerative movement disorder.Comprehensive neuropsychological testing is the‘gold standard’to establish cognitive status but is often impractical in time-constrained clinics.The study evaluated the utility of brief cognitive tests(MMSE and MoCA),UHDRS measures and a comprehensive neuropsychological tests battery in monitoring short-term disease progression in HD.Twenty-two manifest HD patients and 22 matched controls were assessed at baseline and 12-month.A linear mixed-effect model showed that although the HD group had minimal change in overall global cognition after 12 months,they did show a significant decline relative to the control group.The controls exhibited a practice effect in most of the cognitive domain scores over time.Cognitive decline at 12-month in HD was found in the executive function domain but the effect of this on global cognitive score was masked by the improvement in their language domain score.The varying practice effects by cognitive domain with repeated testing indicates the importance of comparing HD patients to control group in research trials and that cognitive progression over 12 months in HD should not be judged by changes in global cognitive score.The three brief cognitive tests effectively described cognition of HD patients on cross-sectional analysis.The UHDRS cognitive component,which focuses on testing executive function and had low variance over time,is a more reliable brief substitute for comprehensive neuropsychological testing than MMSE and MoCA in monitoring cognitive changes in HD patients after 12 months.Eng A Toh Michael R MacAskill John C Dalrymple-Alford Daniel J Myall Leslie Livingston Sandy AD Macleod Tim J Anderson 2014Translational Neurodegeneration2014,3,1:0
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