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

2013년 7월 18일 업데이트: 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.

연구 개요

상태

빼는

정황

연구 유형

중재적

단계

  • 해당 없음

연락처 및 위치

이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.

연구 장소

    • Arizona
      • Tucson, Arizona, 미국, 85724
        • University of Arizona
    • Georgia
      • Atlanta, Georgia, 미국
        • Emory University

참여기준

연구원은 적격성 기준이라는 특정 설명에 맞는 사람을 찾습니다. 이러한 기준의 몇 가지 예는 개인의 일반적인 건강 상태 또는 이전 치료입니다.

자격 기준

공부할 수 있는 나이

21년 (성인, 고령자)

건강한 자원 봉사자를 받아들입니다

아니

연구 대상 성별

모두

설명

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

공부 계획

이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.

연구는 어떻게 설계됩니까?

디자인 세부사항

  • 주 목적: 기초 과학
  • 할당: 무작위
  • 중재 모델: 병렬 할당
  • 마스킹: 하나의

무기와 개입

참가자 그룹 / 팔
개입 / 치료
활성 비교기: 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.
다른 이름들:
  • Pegintron®, Schering Plough
  • PEGASYS®, Roche
위약 비교기: 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.
다른 이름들:
  • Pegintron®, Schering Plough
  • PEGASYS®, Roche

연구는 무엇을 측정합니까?

주요 결과 측정

결과 측정
기간
Percent time laughing
기간: 7 weeks
7 weeks
Percent time expressing empathy for others
기간: 7 weeks
7 weeks
Percent of time spent in substantive conversations
기간: 7 weeks
7 weeks
Percent of time spent alone
기간: 7 weeks
7 weeks

2차 결과 측정

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

공동 작업자 및 조사자

여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.

수사관

  • 수석 연구원: Charles L. Raison, MD, University of Arizona

연구 기록 날짜

이 날짜는 ClinicalTrials.gov에 대한 연구 기록 및 요약 결과 제출의 진행 상황을 추적합니다. 연구 기록 및 보고된 결과는 공개 웹사이트에 게시되기 전에 특정 품질 관리 기준을 충족하는지 확인하기 위해 국립 의학 도서관(NLM)에서 검토합니다.

연구 주요 날짜

연구 시작

2012년 6월 1일

기본 완료 (실제)

2013년 7월 1일

연구 완료 (실제)

2013년 7월 1일

연구 등록 날짜

최초 제출

2012년 6월 11일

QC 기준을 충족하는 최초 제출

2012년 6월 19일

처음 게시됨 (추정)

2012년 6월 21일

연구 기록 업데이트

마지막 업데이트 게시됨 (추정)

2013년 7월 22일

QC 기준을 충족하는 마지막 업데이트 제출

2013년 7월 18일

마지막으로 확인됨

2013년 7월 1일

추가 정보

이 정보는 변경 없이 clinicaltrials.gov 웹사이트에서 직접 가져온 것입니다. 귀하의 연구 세부 정보를 변경, 제거 또는 업데이트하도록 요청하는 경우 register@clinicaltrials.gov. 문의하십시오. 변경 사항이 clinicaltrials.gov에 구현되는 즉시 저희 웹사이트에도 자동으로 업데이트됩니다. .

C 형 간염에 대한 임상 시험

Interferon-alpha에 대한 임상 시험

3
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