Insulin Resistance and Vessel Function After Meals: Does Early Intervention Make a Difference?

NCT ID: NCT00259168

Last Updated: 2018-12-03

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

70 participants

Study Classification

INTERVENTIONAL

Study Start Date

2003-06-30

Study Completion Date

2006-03-31

Brief Summary

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The purpose of this study is to determine whether attenuation/normalization of elevated blood sugar after meals ameliorates vessel wall (endothelial) function in individuals with insulin resistance.

Detailed Description

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Background:Insulin Resistance (IR) is accompanied by a high incidence and prevalence of cardiovascular disease. IR is present in individuals with pre-diabetes/ type 2 diabetes. Epidemiological data demonstrate a tight relationship between postprandial blood sugar, insulin resistance and cardiovascular disease (CVD). Endothelial dysfunction seems to be the very first sign of CVD.

Purpose: We propose to determine whether attenuation /normalization of post-prandial hyperglycaemia, through the administration of an oral hypoglycaemic agent of ultra rapid action (nateglinide), ameliorates endothelial function in the IR.

We extrapolate that a better endothelial function in the brachial artery reflects regression of atherosclerotic changes in the coronary system.

Method and Study Design: Prospective, open, parallel, group comparison study of 1 intervention group, 1 intervention control group and 1 disease control group. The intervention group and the intervention control group each consist of 30 individuals with IR. Individuals in the intervention group receive an individually adjusted dose of nateglinide 3 times daily during 12 weeks. The third group consists of 10 healthy, young individuals. All groups are followed during 3 months with an otherwise unchanged lifestyle. Endothelial function is measured with the Flow Mediated Dilation method before and after the intervention/observation period.

Conditions

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Insulin Resistance Impaired Fasting Glucose

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Interventions

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Nateglinide

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Insulin resistance, impaired glucose tolerance

Exclusion Criteria

* unstable chronic disease, acute disease
Minimum Eligible Age

25 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Novartis

INDUSTRY

Sponsor Role collaborator

Bayer

INDUSTRY

Sponsor Role collaborator

Atheline Major-Pedersen

OTHER

Sponsor Role lead

Responsible Party

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Atheline Major-Pedersen

MD

Responsibility Role SPONSOR_INVESTIGATOR

Principal Investigators

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Christian Torp-Pedersen, MD, DMSc

Role: STUDY_CHAIR

Bispebjerg Hospital

Locations

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Endothelial laboratory, Cardiology clinic Y-research, H:S Bispebjerg Hospital

Bispebjerg Bakke, Copenhagen, Copenhagen NV, Denmark

Site Status

Countries

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Denmark

References

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Ceriello A, Taboga C, Tonutti L, Quagliaro L, Piconi L, Bais B, Da Ros R, Motz E. Evidence for an independent and cumulative effect of postprandial hypertriglyceridemia and hyperglycemia on endothelial dysfunction and oxidative stress generation: effects of short- and long-term simvastatin treatment. Circulation. 2002 Sep 3;106(10):1211-8. doi: 10.1161/01.cir.0000027569.76671.a8.

Reference Type BACKGROUND
PMID: 12208795 (View on PubMed)

Celermajer DS, Sorensen KE, Gooch VM, Spiegelhalter DJ, Miller OI, Sullivan ID, Lloyd JK, Deanfield JE. Non-invasive detection of endothelial dysfunction in children and adults at risk of atherosclerosis. Lancet. 1992 Nov 7;340(8828):1111-5. doi: 10.1016/0140-6736(92)93147-f.

Reference Type BACKGROUND
PMID: 1359209 (View on PubMed)

Corretti MC, Anderson TJ, Benjamin EJ, Celermajer D, Charbonneau F, Creager MA, Deanfield J, Drexler H, Gerhard-Herman M, Herrington D, Vallance P, Vita J, Vogel R; International Brachial Artery Reactivity Task Force. Guidelines for the ultrasound assessment of endothelial-dependent flow-mediated vasodilation of the brachial artery: a report of the International Brachial Artery Reactivity Task Force. J Am Coll Cardiol. 2002 Jan 16;39(2):257-65. doi: 10.1016/s0735-1097(01)01746-6.

Reference Type BACKGROUND
PMID: 11788217 (View on PubMed)

Other Identifiers

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02-005/03

Identifier Type: -

Identifier Source: org_study_id

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