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Effects of Repeat Dosing of GSK1521498

2014-08-27 03:19:24 | BioPortfolio

Summary

The overall purpose of this study is to see whether the drug is safe and well tolerated when given to overweight or obese but otherwise healthy volunteers for 10 days. Up to 4 groups of people will be given the drug at variable strengths. The blood levels of the drug will be measured and the effects on mood and cognition (the mental processes involved in awareness, learning and judgement) will be assesed.

Description

This study is to test a new drug which may be used for treating eating behaviour and patterns that some overweight and obese patients find difficult to control. The drug works by inhibiting the effects of messenger molecules called opioids, e.g. endorphins. These opioids are naturally produced within the human body and control hunger, thirst, and the pleasurable feelings we relate to eating food. The drug attaches to opioid binding sites in the brain, known as mu-opioid receptors; this blocks the natural effect of opioids which may reduce the craving to eat fatty or sugary foods. Single doses of the drug have been given to humans and showed it was safe. Now the drug will be given every day for 10 days to check that the drug is safe and tolerated when given repeatedly. The study is in two parts:

Part A: people will receive a sleeping tablet to make them sleepy (or a dummy drug) and will complete some questionnaires and simple tests including computer exercises to test the effect of this tablet on mood and cognition. This information will be used to help judge what is happening in Part B.

Part B: requires staying in the unit for 10 days to receive a tablet every day and complete questionnaires and other tests to check for any mood and cognitive changes. Various other assessments will include effects on eating behaviour, pain measures and changes in body composition (content of fat, muscle and water).

Study Design

Allocation: Randomized, Endpoint Classification: Safety Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Treatment

Conditions

Obesity

Intervention

GSK1521498 or placebo, Zolpidem or placebo - Hypnotic drug given for sleep disorders

Location

GSK Investigational Site
Cambridge
Cambridgeshire
United Kingdom
CB2 0QQ

Status

Completed

Source

GlaxoSmithKline

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:19:24-0400

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Medical and Biotech [MESH] Definitions

Misunderstanding among individuals, frequently research subjects, of scientific methods such as randomization and placebo controls.

An effect usually, but not necessarily, beneficial that is attributable to an expectation that the regimen will have an effect, i.e., the effect is due to the power of suggestion.

A short-acting barbiturate that is effective as a sedative and hypnotic (but not as an anti-anxiety) agent and is usually given orally. It is prescribed more frequently for sleep induction than for sedation but, like similar agents, may lose its effectiveness by the second week of continued administration. (From AMA Drug Evaluations Annual, 1994, p236)

Periods of sleep manifested by changes in EEG activity and certain behavioral correlates; includes Stage 1: sleep onset, drowsy sleep; Stage 2: light sleep; Stages 3 and 4: delta sleep, light sleep, deep sleep, telencephalic sleep.

Dyssomnias (i.e., insomnias or hypersomnias) associated with dysfunction of internal sleep mechanisms or secondary to a sleep-related medical disorder (e.g., sleep apnea, post-traumatic sleep disorders, etc.). (From Thorpy, Sleep Disorders Medicine, 1994, p187)

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