Testing of HIV Protease Inhibitors to Suppress Inflammation and Improve Cardio Pulmonary Hemodynamics in Subjects With Pulmonary Arterial Hypertension
Study Rationale:There is recent evidence that HIV protease inhibitors (HIV-PI) can improve pulmonary hemodynamics in experimental models of pulmonary arterial hypertension (PAH). There is also experimental evidence that both TLR4 and high mobility group box 1 (HMGB1) participate in the pathogenesis of experimental pulmonary hypertension. A recent high throughput screen for inhibitors of HMGB1 induced macrophage activation yielded HIV-protease inhibitors (PIs) as potent inhibitors of HMGB1 induced cytokine production. Based on the experimental evidence we propose a trial to determine whether HIV-PIs will alter the pathobiology of PAH.
Study Objectives:The main objective of this study is to determine whether saquinavir and ritonavir (SQV+RIT) which have a well-characterized safety profile in humans will reduce bio markers of inflammation and pulmonary artery pressures in patients with PAH.
Study Hypothesis:We hypothesize that the HIV-PI, SQV+RIT, will reduce circulating parameters of inflammation including HMGB1, IL1-beta, IL-6, IL-8, IL-10, TNF-alpha and CRP. Our end points will be changes in these parameters from baseline over the duration of the study.We hypothesize that treatment with SQV+RIT will reduce pulmonary artery(PA) pressure of patients with PAH as measured by echocardiography.
Study Design:This is a single center open label phase 0 study to evaluate the effect of SQV +RIT in patients with IPAH. Subjects with IPAH(N=20) will be enrolled into a study, which will be divided into 3 cohorts and entail the administration of HIV protease inhibitors in three doses. The first cohort (n=3) will receive a starting dose of SQV 0.3 mg/kg twice daily in combination with RIT 0.03 mg/kg twice daily. If the first dose is well-tolerated, the second cohort (n= 3 ) with IPAH will be given doses of SQV 3 mg/kg and RIT 0.3 mg/kg twice daily. If the second dose is well-tolerated, the last cohort (n= 14 ) with IPAH will be given doses of SQV 15 mg/kg and RIT 1.5 mg/kg twice daily.
調査の概要
研究の種類
入学 (予想される)
段階
- 初期フェーズ 1
連絡先と場所
研究連絡先
- 名前:Li Ying, MD
- 電話番号:0086-13787184360
- メール:lydia0312@csu.edu.cn
研究場所
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Hunan
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Changsha、Hunan、中国
- 募集
- Xiangya Hospital
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コンタクト:
- YU ZAI XIN, PhD
- 電話番号:0086-13875873205
- メール:yuzaixin@126.com
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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:
- Age 18-60
- Idiopathic pulmonary arterial hypertension
- Evidence of a personally signed and dated informed consent document indicating that the subject (or a legally acceptable representative) has been informed of all pertinent aspects of the study
- Had the diagnosis of PAH confirmed by a cardiac catheterization:Mean pulmonary artery pressure (mPAP) ≥ 25 mm Hg (at rest),a pulmonary capillary wedge pressure equal or less than 15mmHg, and a normal or reduced cardiac output
- Stable PAH therapy for at least 3 months
Exclusion Criteria:
- Baseline systemic hypotension, defined as MAP less than 50 mmHg
- Required intravenous inotropes within 30 days prior to study participation
- Has uncontrolled systemic hypertension as evidenced by sitting systolic blood pressure >160 mm Hg or sitting diastolic blood pressure >100 mm Hg at screening
- Has a history of portal hypertension or chronic liver disease, including cirrhosis, chronic alcoholism, hepatitis B and/or hepatitis C (with evidence of recent infection and/or active virus replication) defined as moderate to severe hepatic impairment (Child-Pugh Class B-C)
- Has chronic renal insufficiency as defined by serum creatinine >2.5 mg/dL at screening or requires dialysis support
- Has a hemoglobin concentration <9 g/dL at Screening
- History of atrial septostomy
- Repaired or unrepaired congenital heart disease (CHD)
- Pericardial constriction
- Restrictive or congestive cardiomyopathy
- Left ventricular ejection fraction 40% by multiple gated acquisition scan (MUGA), angiography or echocardiography
- Symptomatic coronary disease with demonstrable ischemia
- Other severe acute or chronic medical or laboratory abnormality that may increase the risk associated with study participation or investigational product administration or may interfere with the interpretation of study results and, in the judgment of the investigator, would make the subject inappropriate for entry into this study
- Has a psychiatric, addictive or other disorder that compromises the ability to give informed consent for participating in this study. This includes subjects with a recent history of abusing alcohol or illicit drugs 30 days prior to study screening Day 1 and for the duration of the study
- Poorly controlled asthma defined by active wheezing and/or cough with FEV1 < 70% predicted, responsive to inhaled BD (>15% increase in FEV1 with BD)
- Clinically significant intercurrent illness (including lower respiratory tract infection) or clinically significant surgery within 4 weeks before the administration of study drug
- History of hypersensitivity or idiosyncratic reaction to drugs from multiple drug classes
- Receipt of an investigational product or device, or participation in a drug research study within a period of 15 days (or 5 half lives of the drug, whichever is longer) before the first dose of study drug
- Blood loss or blood donation >550mL within 90 days or plasma donation >500 mL within 14 days before administration of study drug;
- Patients with a QTc interval > 450 msec
- Has diabetes mellitus as defined by symptoms of hyperglycemia and serum fasting plasma glucose level≥7.0mmol/l or casual plasma glucose≥11.1mmol/l at screen
- Has a hyperlipidemia as TC≥6.22 mmol/L, LDL-C ≥4.14 mmol/L or TG ≥2.26 mmol/L
- History of crohn's disease, ulcerative colitis (UC) and etc. Inflammatory bowel disease (IBD)
- Patients who are not willing to take contraceptive measures during the study
- Patients who are taking certain other medication will need to be evaluated for possible exclusion based on the potential for adverse drug interactions
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:処理
- 割り当て:ランダム化
- 介入モデル:並列代入
- マスキング:なし(オープンラベル)
武器と介入
参加者グループ / アーム |
介入・治療 |
---|---|
実験的:micro/low dose saquinavir and ritonavir
To determine if micro dose and low dose SQV+RIT mediates parameters of chronic inflammation in patients with IPAH.
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micro and low dose
standard dose
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実験的:standard dose saquinavir and ritonavir
To determine if short-term use of SQV+RIT reduces parameters of chronic inflammation and PA pressure of IPAH based on echocardiographic parameters.
Safety issue also evaluated at the same time.
|
micro and low dose
standard dose
|
この研究は何を測定していますか?
主要な結果の測定
結果測定 |
時間枠 |
---|---|
HMGB1 level
時間枠:14 days
|
14 days
|
二次結果の測定
結果測定 |
時間枠 |
---|---|
TNF、IL-1Β、IL-6、NT-ProBNP and CRP level
時間枠:14 days
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14 days
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NYHA/WHO functional class
時間枠:14 days
|
14 days
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Brog respiration class
時間枠:14 days
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14 days
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PA pressure and total right heart function measured by echocardiography
時間枠:14 days
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14 days
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その他の成果指標
結果測定 |
時間枠 |
---|---|
6 minute walk distance
時間枠:14 days
|
14 days
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協力者と研究者
出版物と役立つリンク
研究記録日
主要日程の研究
研究開始
一次修了 (予想される)
研究の完了 (予想される)
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
本研究に関する用語
追加の関連 MeSH 用語
その他の研究ID番号
- HPI-PAH-0
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。
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