Effect of Single Dose Intranasal Insulin On Cognitive Function
2013년 2월 12일 업데이트: Xiaoduo Fan, University of Massachusetts, Worcester
Effect of Single Dose Intranasal Insulin on Cognitive Function in Patients With Schizophrenia
The purpose of the study is to find out how a small dose of insulin might affect memory, the ability to concentrate, and improve your daily functioning in patients with schizophrenia and schizoaffective disorders. Insulin is not being used to treat diabetes in this study. The investigators propose a single dose, double-blinded, placebo-controlled trial of intranasal insulin in 40 subjects with schizophrenia or schizoaffective disorder to examine insulin's effect on cognition. The specific aims include:
- Examine the effects of single doses of 40 IU intranasal insulin compared to placebo on cognitive functioning, including attention and memory.
- Examine whether single dose of intranasal insulin administration will raise serum insulin level and decrease plasma glucose level
Insulin will be delivered through an air spray pump into your nose. The investigators will be comparing one dose of insulin (40 International Units) with placebo, an inactive liquid.
연구 개요
상세 설명
Insulin signaling in the brain is associated with improved cognitive function in both animal and human studies.
Intranasal administration of insulin, which is non-invasive and minimizes the risk of hypoglycemia, may represent a new intervention approach with the potential to improve cognition and real life functioning in this patient with schizophrenia.
연구 유형
중재적
등록 (실제)
30
단계
- 4단계
연락처 및 위치
이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.
연구 장소
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Massachusetts
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Boston, Massachusetts, 미국, 02114
- Freedom Trail Clinic
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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
18년 (성인, 고령자)
건강한 자원 봉사자를 받아들입니다
예
연구 대상 성별
모두
설명
Inclusion Criteria:
- Age 18-65 years
- Diagnosis of schizophrenia, any subtype or schizoaffective disorder, any subtype
- Male or female
- Stable dose of the current antipsychotic drug for at least one month
- Well established compliance with out-patient treatment per treating clinician's judgement.
- Able to complete the cognitive assessment battery (must be English speaking)
Exclusion Criteria:
- Inability to provide informed consent
- Current substance abuse
- On clozapine or olanzapine
- Psychiatrically unstable per treating clinician's judgement.
- Significant medical illnesses including uncontrolled hypertension, diabetes, seizure disorder, severe cardiovascular, cerebrovascular, pulmonary, or thyroid diseases etc.
- Incapable to complete the cognitive battery assessment.
공부 계획
이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.
연구는 어떻게 설계됩니까?
디자인 세부사항
- 주 목적: 치료
- 할당: 무작위
- 중재 모델: 병렬 할당
- 마스킹: 삼루타
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
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위약 비교기: Placebo (1)
Subjects are given a one-time, single dose of placebo intranasal spray
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위약
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실험적: Single-Dose Intranasal Insulin
Subjects are given a one-time, single dose of intranasal insulin
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40 IU Intranasal Insulin will be administered once
다른 이름들:
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연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
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Improvement in Cognitive Function- HVLT Immediate Recall Total (Number)
기간: pretreatment= in the morning; postreatment= in the afternoon, 30 minutes after intranasal spray administration
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Subjects performed the HVLT Immediate Recall Task.
For this task, participants were read aloud a list of 12 words from three taxonomic categories.
Participants were read the list three separate times, and after each reading were immediately asked to recall as many words from the list as they could.
The number of words recalled successfully was measured before and after intranasal treatment.
Values below represent posttreatment performance minus pretreatment performance.
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pretreatment= in the morning; postreatment= in the afternoon, 30 minutes after intranasal spray administration
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Improvement in Cognitive Function- HVLT-Delayed Recall (Number)
기간: pretreatment= in the morning; postreatment= in the afternoon, 30 minutes after intranasal spray administration
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Subjects performed the HVLT word recall task after a 20-minute delay before and after intranasal treatment.
In the HVLT delayed recall task, participants were asked to recall the same list of 12 words dictated in the immediate recall task 20 minutes after the completion of the immediate recall task.
Words successfully recalled after the 20-minute delay were measured.
Values below represent posttreatment performance minus pretreatment performance.
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pretreatment= in the morning; postreatment= in the afternoon, 30 minutes after intranasal spray administration
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CPT d Score
기간: pretreatment= in the morning; postreatment= in the afternoon, 30 minutes after intranasal spray administration
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Subjects performed a computer-based test designed to measure sustained attention (attention to a specific stimuli over a period of several minutes) before and after intranasal treatment.
During this test, participants respond as quickly as possible to any consecutive presentation of identical stimuli on the computer screen.
The stimuli (2, 3, and 4-digit targets) were presented with increasing cognitive load in successive blocks.
Correct responses, responses made to the second of 2 identical stimuli presented in a row, were scored as hits.
False alarms were also recorded.
The "d prime score" is a score given to each participant on a scale of 0.0- 1.0 in which discrimination sensitivity is measured.
A score of zero equates to no sensitivity, whereas a score of 1.0 equates to perfect sensitivity.
Values below represent postreatment performance minus pretreatment performance.
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pretreatment= in the morning; postreatment= in the afternoon, 30 minutes after intranasal spray administration
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Improvement in Cognitive Function- CPT Hits Rate (Proportion)
기간: pretreatment= in the morning; postreatment= in the afternoon, 30 minutes after intranasal spray administration
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Subjects performed a computer-based test designed to measure sustained attention before and after intranasal treatment.
The task is described in the previous outcome measure ("CPT d score").
Hits rate refers to each participant's ability to correctly respond to two consecutive target presentations (i.e.
correct responses).
Hits rate was measured as a proportion of overall attempts (0= no hits, 1.0= 100% accuracy on hits).
Values below represent posttreatment performance minus pretreatment performance.
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pretreatment= in the morning; postreatment= in the afternoon, 30 minutes after intranasal spray administration
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Improvement in Cognitive Function- CPT Reaction Time of Hits (Milliseconds)
기간: pretreatment= in the morning; postreatment= in the afternoon, 30 minutes after intranasal spray administration
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Subjects performed a computer-based test designed to measure sustained attention before and after intranasal treatment.
The task is described in detail in a previous outcome measure ("CPT d score").
Reaction time of hits refers to the average time each participant took to correctly respond to a stimuli in milliseconds.
Values below represent posttreatment performance minus pretreatment performance.
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pretreatment= in the morning; postreatment= in the afternoon, 30 minutes after intranasal spray administration
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Improvement in Cognitive Function- CPT False Alarm Rate (Proportion)
기간: pretreatment= in the morning; postreatment= in the afternoon, 30 minutes after intranasal spray administration
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Subjects performed a computer-based test designed to measure sustained attention before and after intranasal treatment.
The task is described in detail in a previous outcome measure ("CPT d score").
False alarm rate refers to the proportion of overall attempts that were characterized as incorrect responses (responses to two non-identical targets).
Values below represent posttreatment performance minus pretreatment performance.
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pretreatment= in the morning; postreatment= in the afternoon, 30 minutes after intranasal spray administration
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공동 작업자 및 조사자
여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.
수사관
- 수석 연구원: Xiaoduo Fan, MD, MPH, MS, UMass Medical School
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
2006년 10월 1일
기본 완료 (실제)
2010년 1월 1일
연구 완료 (실제)
2010년 1월 1일
연구 등록 날짜
최초 제출
2008년 1월 31일
QC 기준을 충족하는 최초 제출
2008년 3월 27일
처음 게시됨 (추정)
2008년 3월 28일
연구 기록 업데이트
마지막 업데이트 게시됨 (추정)
2013년 2월 15일
QC 기준을 충족하는 마지막 업데이트 제출
2013년 2월 12일
마지막으로 확인됨
2013년 2월 1일
추가 정보
이 연구와 관련된 용어
추가 관련 MeSH 약관
기타 연구 ID 번호
- 4-2006
- CORRC tracking number: 4-2006
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. .
위약에 대한 임상 시험
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Assistance Publique - Hôpitaux de Paris아직 모집하지 않음
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University Hospital, Strasbourg, France모집하지 않고 적극적으로
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AJU Pharm Co., Ltd.OM Pharma SA모병