10 results
The primary objectives of this study are:• To evaluate the safety and tolerability of GS-9620 in subjects with chronic hepatitis B (CHB) infection currently being treated with oral antivirals (OAV)• To evaluate the efficacy of GS-9620 at Week 24…
To replicate and extend the findings of the recent methylphenidate study in which methylphenidate was found to enhance episodic memory performance; To explore whether this effect of methylphenidate is primarily mediated by its dopaminergic action.
to assess whether a single-dose of levodopa improves cognitive symptoms and balances goal-directed and habitual behavior.
To investigate the effects of galantamine on cognitive impairment and visual hallucinations in Parkinson`s disease, both therapeutic (direct effect) and preventive (protection against an acute increase of dopaminergic medication used by the patient…
This is a medical-scientific research study. The purpose of the study is to investigate the effect of multiple doses of the study compound BIA 28-6156 on the pharmacokinetics of the drugs levodopa-carbidopa (Group 1) and levodopa-benserazide (Group…
The study consists of two phases. In the first phase, we aim to investigate whether the dopamine receptor D4 (DRD4) genotype confers differential susceptibility to the effects of early life stress on empathy and prosocial behavior more generally in…
To determine whether [18F]FES PET/CT improves staging for women with clinical stage II/III or LRR, ER+ breast cancer as compared to standard [18F]FDG PET/CT.
- part A: to identify the pharmacokinetic model that represents the [18F]FES kinetics most optimally and to validate simplified quantitative parameters of [18F]FES uptake. - part B: to investigate the repeatability of simplified quantitative…
The aim of this study is to improve our understanding of the mechanisms underlying altered social performance monitoring from a pharmacological perspective by directly comparing the effects of dopamine and oxytocin on individual and social…
To investigate whether early treatment with levodopa has a delayed beneficial effect on PD symptoms and functional health, and improves the ability to (maintain) work, reduces the use of (informal) care, caregiver burden, and costs. Additionally,…