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This database contains 438 studies, archived under the term: "USA"

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Diverse effects of a low dose supplement of lipidated curcumin in healthy middle aged people

Background: Curcumin extracts of turmeric are proposed to produce health benefits. To date, human intervention studies have focused mainly on people with existing health problems given high doses of poorly absorbed curcumin. The purpose of the current study was to check whether in healthy people, a low dose of a lipidated curcumin extract could alter […]

Effects of atorvastatin on cerebral blood flow in middle-aged adults at risk for Alzheimer’s disease: a pilot study

Background/aims: Hypercholesterolemia in midlife increases risk for Alzheimer’s disease (AD) and contributes to cerebrovascular dysregulation – an early finding in preclinical AD pathology. Statins improve vascular reactivity, but it is unknown if they increase regional cerebral blood flow (CBF) in individuals at risk for AD.; Methods: In a randomized, controlled, double-blind pilot study, 16 asymptomatic […]

Safety and pharmacology of ponezumab (PF-04360365) after a single 10-minute intravenous infusion in subjects with mild to moderate Alzheimer disease

Objective: Ponezumab (PF-04360365) is a humanized anti-amyloid beta (Aβ) monoclonal antibody designed for treatment of Alzheimer disease (AD). A single 2-hour intravenous infusion of 0.1 to 10 mg/kg was previously shown to be safe and well tolerated in subjects with mild to moderate AD, with measurable effects on plasma and cerebrospinal fluid Aβ. This phase […]

Reduction of hippocampal hyperactivity improves cognition in amnestic mild cognitive impairment

Elevated hippocampal activation is observed in conditions that confer risk for Alzheimer’s disease, including amnestic mild cognitive impairment (aMCI). Studies in relevant animal models have indicated that overactivity in selective hippocampal circuits contributes to cognitive impairment. Here, we tested the effect of reducing hippocampal activation in aMCI. Under placebo treatment, hippocampal activation in the dentate […]

High-intensity physical activity modulates diet effects on cerebrospinal amyloid-β levels in normal aging and mild cognitive impairment

We previously showed that amyloid-β 1-42 (Aβ(42)) levels in cerebrospinal fluid (CSF) were markedly altered in response to a 4-week dietary intervention in normal aging and mild cognitive impairment (MCI). Here, we re-examined the data to assess whether diet-induced effects on CSF Aβ(42) were modulated by high intensity physical activity (hi-PA). Normal older adults (n […]

A randomized, double-blind, placebo-controlled trial of pridopidine in Huntington’s disease

We examined the effects of 3 dosages of pridopidine, a dopamine-stabilizing compound, on motor function and other features of Huntington’s disease, with additional evaluation of its safety and tolerability. This was a randomized, double-blind, placebo-controlled trial in outpatient neurology clinics at 27 sites in the United States and Canada. Two hundred twenty-seven subjects enrolled from […]

A randomized, double-blind, placebo-controlled study of latrepirdine in patients with mild to moderate Huntington disease

BACKGROUND Latrepirdine is an orally administered experimental small molecule that was initially developed as an antihistamine and subsequently was shown to stabilize mitochondrial membranes and function, which might be impaired in Huntington disease. OBJECTIVE To determine the effect of latrepirdine on cognition and global function in patients with mild to moderate Huntington disease. DESIGN Randomized, […]

Factors associated with sustained attention during an activity intervention in persons with dementia

Background/aims: Are the noncognitive factors of self-reported mood and personality related to sustained attention in nursing home residents with dementia during an activity intervention?; Methods: Intervention data from a randomized clinical trial were used to address the aim of this project. Subjects were 128 nursing home residents who were assessed for mood, personality, behavioral indicators […]

Mnemonic strategy training partially restores hippocampal activity in patients with mild cognitive impairment

Learning and memory deficits typify patients with mild cognitive impairment (MCI) and are generally attributed to medial temporal lobe dysfunction. Although the hippocampus is perhaps the most commonly studied neuroanatomical structure in these patients, there have been few attempts to identify rehabilitative interventions that facilitate its functioning. Here, we present results from a randomized, controlled, […]

Safety and biomarker effects of solanezumab in patients with Alzheimer’s disease

Objectives: To assess the safety, tolerability, pharmacokinetics, and pharmacodynamics of 12 weekly infusions of solanezumab, an anti-β-amyloid (Aβ) antibody, in patients with mild-to-moderate Alzheimer’s disease. Cognitive measures were also obtained.; Methods: In this phase 2, randomized, double-blind, placebo-controlled clinical trial, 52 patients with Alzheimer’s disease received placebo or antibody (100 mg every 4 weeks, 100 […]

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