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Inflammation, Stress & Social Behavior: Using Ecological Assessments & Model Systems to Enhance Relevance to Health Outcomes

2013年7月18日 更新者:University of Arizona

Inflammation, Stress and Social Behavior: Using Ecological Assessments and Model Systems to Enhance Relevance to Health Outcomes

The current study has been designed to identify behavioral and physiological mechanisms through which positive social connectivity (PCS) and negative social processes (NSP) interact with psychosocial stress to promote resilience in the context of illness. The investigators model inflammation (a central element of all disease states) through the use of treatment with interferon (IFN)-alpha, which provides a standardized regimen of chronic cytokine exposure known to produce profound behavioral disturbances, including depression, fatigue and sickness, in a high percentage of individuals. To objectively assess social processes, the current project will employ the Electronically Activated Recorder (EAR), which periodically and unobtrusively records snippets of ambient sounds in people's momentary environments. To objectively assess behavioral and physiological responses to psychosocial stress the current project will employ the Trier Social Stress Test (TSST), a standardized laboratory stressor known to reliably activate behavioral, neuroendocrine and inflammatory responses. These novel methodologies and model systems will be employed to test the hypotheses that (a) pre-existing affiliative and prosocial behavior will promote resilience in the context of chronic inflammation and that (b) -conversely-chronic inflammation will reduce affiliative and prosocial behavior via effects on stress reactivity, neuroendocrine function and sleep. Finally, it will explore (c) the potential mediating role of stress physiology. To test these hypotheses, 110 subjects with chronic hepatitis C virus infection will be randomized to receive treatment with pegylated IFN-alpha plus ribavirin or to postpone treatment for 6 weeks: 55 subjects at University of Arizona and 55 subjects at Emory University. Prior to randomization and 6 weeks later all subjects will be evaluated with the EAR and sleep actigraphy in their home environments and will undergo TSST and 14 hour diurnal neuroendocrine and immune measurement.

調査の概要

状態

引きこもった

条件

介入・治療

研究の種類

介入

段階

  • 適用できない

連絡先と場所

このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。

研究場所

    • Arizona
      • Tucson、Arizona、アメリカ、85724
        • University of Arizona
    • Georgia
      • Atlanta、Georgia、アメリカ
        • Emory University

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

適格基準

就学可能な年齢

21年~65年 (大人、高齢者)

健康ボランティアの受け入れ

いいえ

受講資格のある性別

全て

説明

Inclusion Criteria:

  • Age 21-65 years including males, females and minorities
  • Ability to speak and read remedial English
  • Serum positive for either anti-HCV antibodies or HCV-RNA positive by PCR
  • Compensated liver disease with the following minimum hematologic and biochemical criteria: hemoglobin ≥13 g/dl for males; ≥12 g/dl for females, white blood cell count > 3,000/mm3, neutrophil count >1,5000/mm3, platelets > 100,000/mm3, prothrombin time ≤ 2 seconds prolonged compared to control, or equivalent INR ratio, albumin stable and within normal limits, serum creatinine within normal limits, thyroid-stimulating hormone within normal limits, direct bilirubin ≤ 0.3 mg/dl or within 20% of upper limit of normal (ULN) for local laboratory, indirect bilirubin ≤ 0.8 mg/dl or within 20% of ULN for local laboratory, fasting blood sugar ≤ 115 mg/dl or within 20% of ULN for non-diabetic patients
  • Negative pregnancy test for women of childbearing potential, and confirmation and documentation that adequate contraception or monogamous relationship with a male partner who has had a vasectomy during the treatment period and for 6 months after discontinuation of therapy
  • Not breastfeeding
  • Documentation and confirmation of adequate contraception in sexually active males
  • Free from all psychotropic medications for 14 days prior to baseline visit (8 weeks for fluoxetine)

Exclusion Criteria:

  • Evidence of untreated or poorly controlled endocrine, cardiovascular, hematological, renal, or neurological disease
  • Evidence of decompensated liver disease (such as a history or presence of ascites, bleeding varices, spontaneous encephalopathy)
  • History of narcolepsy, PLMS or sleep apnea (or documented during the adaptation night)
  • History of CNS trauma or active seizure disorder requiring medication
  • Any cause for liver disease other than chronic hepatitis C, such as co-infection with hepatitis B virus and/or human immunodeficiency virus, hemochromatosis, or Wilson's diseases
  • Prior treatment with ribavirin or other antiviral or immunomodulatory drugs, including corticosteroids within 6 months of entry into protocol
  • Chronic use of agents known to affect monoamine metabolism/function (and hence potentially affect the TSST), including, but not limited to, alpha- and beta-receptor agonists and antagonists, methylphenidate hydrochloride, dextroamphetamine, midodrine hydrochloride, theophylline, ephedrine, systemic antifungal azoles, sumatriptan succinate
  • Psychotropic medications within 14 days prior to baseline visit (8 weeks for fluoxetine)
  • Clinical gout
  • Hypersensitivity to alpha interferon or ribavirin
  • Hemoglobinopathies (e.g. thalassemia)
  • A positive pregnancy test
  • Organ transplants
  • A score of <24 on the Mini Mental Status Exam (MMSE)
  • Active, effective treatment of depression with an antidepressant within the past six months
  • Actively meet criteria for major depression within the past six months
  • Meet criteria for schizophrenia or bipolar disorder (mania) past or present
  • Active abuse of alcohol or illicit/prescription drugs within the past year any other condition which in the opinion of the investigator would make the patient unsuitable for enrollment, or could interfere with participating in or completing the protocol

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

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:基礎科学
  • 割り当て:ランダム化
  • 介入モデル:並列代入
  • マスキング:独身

武器と介入

参加者グループ / アーム
介入・治療
アクティブコンパレータ:HCV Interferon-alpha group
Subjects receiving treatment with interferon (IFN)-alpha for chronic hepatitis C virus infection.
Hepatitis C patients who are eligible to receive IFN-alpha treatment and enrolled in this study will be treated with pegylated IFN-alfa-2b or pegylated IFN-alfa-2a plus ribavirin at a dose of 800-1,400 mg/d as determined by the treating gastroenterologist. All medication administration is for purely clinical indications as dictated by treating physicians. Any and all diagnostic or treatment issues related to potential treatment with IFN-alpha will be conducted by treating clinicians. Subjects will be randomized to start their clinical (non-research) treatment following completion of baseline assessments or to delay the start of their clinical (non-research) treatment by 7 weeks.
他の名前:
  • Pegintron®, Schering Plough
  • PEGASYS®, Roche
プラセボコンパレーター:HCV Control Group
Subjects delaying the start of treatment with interferon (IFN)-alpha for chronic hepatitis C virus infection by 7 weeks.
Hepatitis C patients who are eligible to receive IFN-alpha treatment and enrolled in this study will be treated with pegylated IFN-alfa-2b or pegylated IFN-alfa-2a plus ribavirin at a dose of 800-1,400 mg/d as determined by the treating gastroenterologist. All medication administration is for purely clinical indications as dictated by treating physicians. Any and all diagnostic or treatment issues related to potential treatment with IFN-alpha will be conducted by treating clinicians. Subjects will be randomized to start their clinical (non-research) treatment following completion of baseline assessments or to delay the start of their clinical (non-research) treatment by 7 weeks.
他の名前:
  • Pegintron®, Schering Plough
  • PEGASYS®, Roche

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
Percent time laughing
時間枠:7 weeks
7 weeks
Percent time expressing empathy for others
時間枠:7 weeks
7 weeks
Percent of time spent in substantive conversations
時間枠:7 weeks
7 weeks
Percent of time spent alone
時間枠:7 weeks
7 weeks

二次結果の測定

結果測定
時間枠
Cortisol concentrations in blood in response to stress test
時間枠:7 weeks
7 weeks
Interleukin (IL)-6 concentrations in the blood in response to stress test
時間枠:7 weeks
7 weeks
Diurnal plasma concentrations of interleukin-6 and tumor necrosis factor-alpha type II receptors in response to a stress test
時間枠:7 weeks
7 weeks
Diurnal plasma concentrations of inflamcortisol in response to a stress test
時間枠:7 weeks
7 weeks
Wake time after sleep onset measured by actigraphy
時間枠:7 weeks
7 weeks
Sleep latency by measured by actigraphy
時間枠:7 weeks
7 weeks
Total sleep time by actigraphy
時間枠:7 weeks
7 weeks
Sleep efficiency by actigraphy
時間枠:7 weeks
7 weeks
Structured Interview Guide for the Hamilton Depression Scale and Inventory of Depressive Symptomatology (SIGH-IDS)
時間枠:7 weeks
7 weeks

協力者と研究者

ここでは、この調査に関係する人々や組織を見つけることができます。

スポンサー

捜査官

  • 主任研究者:Charles L. Raison, MD、University of Arizona

研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始

2012年6月1日

一次修了 (実際)

2013年7月1日

研究の完了 (実際)

2013年7月1日

試験登録日

最初に提出

2012年6月11日

QC基準を満たした最初の提出物

2012年6月19日

最初の投稿 (見積もり)

2012年6月21日

学習記録の更新

投稿された最後の更新 (見積もり)

2013年7月22日

QC基準を満たした最後の更新が送信されました

2013年7月18日

最終確認日

2013年7月1日

詳しくは

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。

C型肝炎の臨床試験

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