Effect of Statin Treatment on Insulin Sensitivity During Myocardial Infarction

NCT ID: NCT01205347

Last Updated: 2013-09-10

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE4

Total Enrollment

27 participants

Study Classification

INTERVENTIONAL

Study Start Date

2010-10-31

Study Completion Date

2013-09-30

Brief Summary

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Stress hyperglycemia during myocardial infarction (MI) is related to mortality at short and long term. Recent studies, however, revealed that chronic statin treatment may decrease both insulin sensitivity and secretion immediately after statin therapy initiation. This study aim was to investigate the dose-dependent effect of statins on insulin sensitivity in patients in the acute phase of MI.

Detailed Description

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Stress hyperglycemia during myocardial infarction (MI) is a predictor of worse prognosis at short and long term. From the mechanistic standpoint, hyperglycemia can attenuate thrombolysis, increase platelet aggregation, induce coronary vasoconstriction, reduce oxygen transport and prolong endothelial inflammation after MI. Consistently, observational data indicates that glucose normalization improves survival in hyperglycemic patients hospitalized with MI.

High dose potent statins have been included in the early treatment of acute coronary syndromes (ACS) based upon a broad range of potentially beneficial mechanisms. Recent studies, however, revealed that chronic statin treatment may increase the incidence of type 2 diabetes mellitus in a dose-dependent manner. Moreover, according to studies in cellular and animal models, such decrease in insulin sensitivity may be observed immediately after statin therapy initiation. By inference, one may speculate that statin treatment initiated at the acute phase of MI may potentially favor the appearance or aggravation of stress hyperglycemia. To date, however, this hypothesis has not been investigated. Hence, this study aim was to investigate the dose-dependent effect of statins on insulin sensitivity in patients in the acute phase of MI.

Conditions

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Myocardial Infarction

Keywords

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Statin Myocardial infarction Insulin sensitivity

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Simvastatin 80mg

Simvastatin 80mg once a day

Group Type EXPERIMENTAL

Simvastatin 80mg

Intervention Type DRUG

Simvastatin 80mg once a day

Simvastatin 10mg

Simvastatin 10mg once a day

Group Type ACTIVE_COMPARATOR

Simvastatin 10mg

Intervention Type DRUG

Simvastatin 10mg once a day

Interventions

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Simvastatin 80mg

Simvastatin 80mg once a day

Intervention Type DRUG

Simvastatin 10mg

Simvastatin 10mg once a day

Intervention Type DRUG

Other Intervention Names

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Zocor Zocor

Eligibility Criteria

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Inclusion Criteria

* Less than 24 hours after the onset of MI symptoms
* ST-segment elevation of a least 1 mm (frontal plane) or 2 mm (horizontal plane) in two contiguous leads
* Myocardial necrosis, as evidenced by increased Creatine Kinase-MB (CK-MB) and troponin levels

Exclusion Criteria

* Diabetes or prior use of statins in the last 6 months
Minimum Eligible Age

40 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Brasilia Heart Study Group

OTHER

Sponsor Role lead

Responsible Party

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Andrei C. Sposito

Professor of Cardiology

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Andrei C Sposito, MD PhD

Role: STUDY_CHAIR

Faculty of Medical Sciences, State University of Campinas

Locations

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Hospital de Base do Distrito Federal

Brasília, Federal District, Brazil

Site Status

Countries

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Brazil

Other Identifiers

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Statin_InsulinSensitivity

Identifier Type: -

Identifier Source: org_study_id