Use of a Test That Evaluates How the Body Handles Insulin and Glucose
AACTG Modified Frequently Sampled Intravenous Glucose Tolerance Test (FSIVGTT) for the Assessment of Insulin Sensitivity: A Substudy of A5079
The purpose of this study is to find out if testosterone gel affects how the body handles insulin and glucose.
Specific anti-HIV treatments may increase a patient's risk of certain diseases by causing metabolic problems such as reduced sensitivity to insulin. This substudy will examine how testosterone affects insulin sensitivity. If testosterone increases insulin sensitivity in the patients, then giving testosterone to HIV-infected patients may allow the continuation of anti-HIV treatments without increasing the patients' risk of disease. The test used to determine insulin sensitivity will be a modified frequently sampled intravenous glucose tolerance test (FSIVGTT), which can accurately measure insulin sensitivity.
調査の概要
状態
条件
詳細な説明
Assessment of insulin sensitivity is an important objective of this substudy. Extrapolation from earlier studies suggests that insulin resistance will be associated with low testosterone levels at baseline in HIV-infected men with visceral obesity and that physiologic testosterone replacement in these individuals is likely to increase insulin sensitivity. However, direct assessment of insulin sensitivity under carefully controlled conditions is crucial to understanding the full metabolic impact of physiologic testosterone replacement in the context of A5079. The FSIVGTT, using the Bergman minimal model, has become a widely used method for the assessment of insulin sensitivity in epidemiological and intervention studies. Based on these considerations, the modified FSIVGTT was chosen as the optimal modality to assess insulin sensitivity in A5112s.
This study is a substudy of A5079. Patients enrolled in A5079 are eligible for this substudy but receive no study treatment other than that which they receive on A5079. Insulin sensitivity is measured by FSIVGTT performed at entry and at Weeks 24 and 48. In the modified FSIVGTT, 15 serial blood specimens for glucose are drawn over a 245-minute interval. The FSIVGTT assesses whether patients given testosterone supplements have more sensitivity to insulin than patients given a placebo.
研究の種類
入学
連絡先と場所
研究場所
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California
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Los Angeles、California、アメリカ、900331079
- Univ of Southern California / LA County USC Med Ctr
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San Francisco、California、アメリカ、94110
- Univ of California San Francisco
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Hawaii
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Honolulu、Hawaii、アメリカ、96816
- Univ of Hawaii
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Illinois
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Chicago、Illinois、アメリカ、60612
- Rush Presbyterian - Saint Luke's Med Ctr
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Indiana
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Indianapolis、Indiana、アメリカ、462025250
- Indiana Univ Hosp
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Indianapolis、Indiana、アメリカ、46202
- Methodist Hosp of Indiana / Life Care Clinic
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Indianapolis、Indiana、アメリカ、46202
- Wishard Hosp
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New York
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New York、New York、アメリカ、10016
- Bellevue Hosp / New York Univ Med Ctr
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-
参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria
Patients may be eligible for this study if they:
- Are enrolled in A5079.
研究計画
研究はどのように設計されていますか?
協力者と研究者
捜査官
- スタディチェア:Shalender Bhasin
研究記録日
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (見積もり)
学習記録の更新
投稿された最後の更新 (見積もり)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
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