Journal of neurology, neurosurgery, and psychiatry
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J. Neurol. Neurosurg. Psychiatr. · Jul 2015
Review Meta AnalysisCholinesterase inhibitors for Parkinson's disease: a systematic review and meta-analysis.
Parkinson's disease (PD) is a progressive neurodegenerative movement disorder frequently associated with a wide variety of non-motor symptoms related to non-dopaminergic pathways. Although the depletion of dopamine is the key neurochemical impairment in PD and anticholinergic medications are used for symptomatic treatment, significant deficits in cholinergic transmission are also present and have been associated with cognitive decline and gait dysfunction. Therefore, use of a cholinesterase inhibitor (ChI) might improve cognitive function and reduce the risk of falls in patients with PD, although it could plausibly worsen motor features. Our objective was to conduct a systematic review of prospective, randomised controlled trials, in order to assess the efficacy and safety of ChIs compared with placebo in patients with PD. ⋯ ChIs are effective in the treatment of cognitive impairment in patients with PD, but do not affect risk of falls. The choice of treatment has to be balanced considering the increased tremor and adverse drug reactions.
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J. Neurol. Neurosurg. Psychiatr. · Jul 2015
Review Meta AnalysisTheory of mind in behavioural-variant frontotemporal dementia and Alzheimer's disease: a meta-analysis.
Current evidence suggests that neurocognitive testing has limited practical benefit in distinguishing behavioural-variant frontotemporal dementia (bvFTD) and Alzheimer's disease (AD). In this meta-analysis of 30 studies, theory of mind (ToM) performances of 784 individuals with bvFTD (n=273) and AD (n=511) were compared with 671 healthy controls. ToM performances of 227 patients with bvFTD and 229 with AD were also compared in studies matched for general cognition. ⋯ In contrast, ToM deficits are modest compared with level of general cognitive impairment in AD. In both disorders, longer duration of disease and level of general cognitive impairment are related to relatively more severe ToM deficits. Assessment of ToM can be beneficial for early identification of bvFTD.