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This database contains 108 studies, archived under the term: "time factors"

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Randomized controlled trial of memantine in dementia associated with Parkinson’s disease
The objective of this study is to investigate the safety and tolerability of memantine, a glutamatergic modulator, in patients suffering from dementia associated with Parkinson’s disease (PDD), an increasingly common complication of PD. This was a 22-week trial of 25 participants with a DSM-IV diagnosis of PDD who were randomized to either placebo or 20 […]

Early intervention for mild cognitive impairment: a randomised controlled trial
Background: Positive effects are reported for memory training for healthy older adults, and yet there is limited information about the benefit of cognitive intervention for older adults with increasing memory difficulties-mild cognitive impairment.; Objective: To investigate the usefulness of an early cognitive intervention for the memory difficulties experienced by people with amnestic mild cognitive impairment.; […]

Tetrabenazine as anti-chorea therapy in Huntington disease: an open-label continuation study. Huntington Study Group/TETRA-HD Investigators
Background: Tetrabenazine (TBZ) selectively depletes central monoamines by reversibly binding to the type-2 vesicular monoamine transporter. A previous double blind study in Huntington disease (HD) demonstrated that TBZ effectively suppressed chorea, with a favorable short-term safety profile (Neurology 2006;66:366-372). The objective of this study was to assess the long-term safety and effectiveness of TBZ for […]

Continuous positive airway pressure deepens sleep in patients with Alzheimer’s disease and obstructive sleep apnea
Objective: Patients with Alzheimer’s disease (AD) and obstructive sleep apnea (OSA) experience disrupted sleep. This study examined the effect of continuous positive airway pressure (CPAP) on sleep parameters in AD patients with OSA.; Methods: A randomized placebo-controlled trial of 3 weeks of therapeutic CPAP (tCPAP) vs. 3 weeks placebo CPAP (pCPAP) followed by 3 weeks […]

Randomized controlled trial of atomoxetine for cognitive dysfunction in early Huntington disease
Background: Cognitive symptoms are associated with functional disability in Huntington disease; yet, few controlled trials have examined cognitive treatments that could improve patient independence and quality of life. Atomoxetine is a norepinephrine reuptake inhibitor approved for treatment of attention-deficit/hyperactivity disorder.; Methods: Twenty participants with mild Huntington disease who complained of inattention were randomized to receive […]

Reduced TNF-α and increased IGF-I levels in the serum of Alzheimer’s disease patients treated with the neurotrophic agent cerebrolysin
According to current scientific knowledge, excess tumour necrosis factor-α (TNF-α) and low insulin-like growth factor-I (IGF-I) are pathogenic-risk factors that constitute therapeutic targets for Alzheimer’s disease (AD). Changes in serum TNF-α, total and dissociable IGF-I levels were determined by ELISA in 207 AD patients completing a 24-wk, double-blind, placebo-controlled trial to evaluate the effects of […]

Effects of donepezil, galantamine and rivastigmine in 938 Italian patients with Alzheimer’s disease: a prospective, observational study
Acetylcholinesterase inhibitors (AChEIs) have been used to improve cognitive status and disability in patients with mild to moderate Alzheimer’s disease (AD). However, while the efficacy of AChEIs (i.e. how they act in randomized controlled trials) in this setting is widely accepted, their effectiveness (i.e. how they behave in the real world) remains controversial. To compare […]

Vitamins B(12), B(6), and folic acid for cognition in older men
Objective: To investigate whether supplementing older men with vitamins B(12), B(6), and folic acid improves cognitive function.; Methods: The investigators recruited 299 community-representative hypertensive men 75 years and older to a randomized, double-blind controlled clinical trial of folic acid, vitamin B(6), and B(12) supplementation vs placebo over 2 years. The primary outcome of interest was […]

Safety and tolerability of donepezil in mild cognitive impairment: open-label extension study
Following a 48-week, double-blind, randomized, placebo-controlled trial of donepezil in 821 patients with amnestic mild cognitive impairment (aMCI), safety and tolerability of donepezil (10 mg) were further evaluated in a 28-week extension study. Of 499 participants who completed the double-blind phase, 145 enrolled in the open-label study. Adverse events (AEs) were recorded throughout. Overall, 57.4% […]

A randomized, placebo-controlled trial of latrepirdine in Huntington disease
Objectives: To evaluate the safety and tolerability of latrepirdine in Huntington disease (HD) and explore its effects on cognition, behavior, and motor symptoms.; Design: Double-blind, randomized, placebo-controlled trial.; Setting: Multicenter outpatient trial.; Participants: Ninety-one participants with mild to moderate HD enrolled at 17 US and UK centers from July 18, 2007, through July 16, 2008.; […]

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