Influence of Treatment With Olanzapine or Ziprasidone on Transcapillary Glucose Transport in Human Skeletal Muscle
试验速览
- 阶段
- 4 期
- 状态
- 已完成
- 试验地点
- 2
研究概览
简要总结
Healthy volunteers will undergo euglycaemic hyperinsulinaemic clamp and microdialysis before and after administration of 10mg olanzapine or 80mg ziprasidone during 10 days.
详细描述
Background:
The efficacy of atypical antipsychotics, such as olanzapine, clozapine, risperidone, quetiapine and ziprasidone in treating a broad spectrum of symptoms in schizophrenia as well as their lower likelihood of extrapyramidal symptoms have led to an increased use of these substances. However there is an ongoing debate whether treatment with atypical antipsychotics is associated with a higher risk for metabolic abnormalities. The FDA stated in 2003 that all atypical antipsychotics increase the risk for glucose abnormalities. For olanzapine many, but not all studies report an increased risk for the development of metabolic abnormalities, such as glucose intolerance, insulin-resistance and consequentially NIDDM (Non-Insulin-Dependent-Diabetes Mellitus). Ziprasidone on the other hand seems to be associated with a more favorable metabolic safety profile.Glucose intolerance and insulin resistance being risk factors for the development of NIDDM and cardiovascular disease, the exact determination of putative effects of atypical antipsychotics on insulin sensitivity and resistance is of great need. An innovative technique, microdialysis, allows for the measurement of various analytes in the interstitial space, i.e. to assess insulin sensitivity directly at the responsible compartment, which is the human skeletal muscle. With the use of microdialysis it is possible to determine the arterial to interstitial gradient, a suitable marker for plasma glucose extraction of peripheral tissue, and thus detect insulin resistance directly at the site of insulin action.
Aim of the study:
To compare the effects of treatment with the atypical antipsychotics olanzapine and ziprasidone in steady-state conditions on the arterial to interstitial skeletal muscle gradient for glucose in human skeletal muscle during euglycaemic hyperinsulinaemic clamp conditions in male healthy volunteers.
Study design:
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 55 Years（Adult）
- 性别
- Male
- 接受健康志愿者
- 是
入选标准
- •Age between 18-55
- •Healthy male volunteers
- •No history of drug or alcohol abuse
- •No regular nicotine consumption at time of enrollment
- •Physical activity at least twice a week
- •Body mass Index between 19-24 kg/m2
- •Normal laboratory values
- •Normotension (blood pressure less than 140/90)
- •No past or present history of psychiatric disorder
- •No family history of diabetes or obesity
- •Written informed consent
排除标准
- •Use of medication within the last 14 days
- •Consumption of alcohol within the last 5 days
- •Family history of diabetes or obesity
- •Past or present psychiatric disorder