C-peptide Correlation With Microvascular Complications in T1DM

NCT ID: NCT04474535

Last Updated: 2020-07-17

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

UNKNOWN

Total Enrollment

200 participants

Study Classification

OBSERVATIONAL

Study Start Date

2020-03-03

Study Completion Date

2021-12-31

Brief Summary

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The purpose of this study is to investigate the presence of residual insulin secretion in patients with DM1 and its correlation with the possible protection against early microvascular and macrovascular complications, emphasizing on the functionality of the myocardium.

Detailed Description

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The study will include approximately 200 patients, male and female, with DM1 who are being followed in the outpatient diabetic clinic of our hospital.

Each patient will visit the Research Laboratory of the Diabetes Centre of our Department. The visit will take place in the morning in a fasting state of about 12 hours. Demographic data will be recorded along with the patients' habits, lifestyle, current medication and complete medical history of concomitant diseases.

This will be followed by anthropometric measurements (weight, height, BMI) and afterwards blood samples will be taken for the determination of urea, creatinine, glucose, HbA1c and lipids. Part of each blood sample will be collected in tubes containing EDTA to determine fasting c-peptide concentrations. The presence of microalbuminuria will be assessed from a morning urine sample by calculating urinary albumin to creatinine ratio (ACR).

The functionality of the heart's autonomic nervous system will be assessed through the use of heart rate variability (HRV) measurements, using the standard Ewing's tests panel: deep inhalation, standing up and Valsalva's manoeuvre. Changes in blood pressure when changing from the supine to the standing position will also be recorded. Subsequently, the distensibility of the large vessels will be determined, by calculating the conduction velocity of the pulse wave between the carotid and the femoral artery (pulse wave velocity (PWV)).

Finally, a full transthoracic echocardiographic study will be carried out to assess functionality, systolic and diastolic, of the left ventricle (LV).

All data will be recorded in an electronic database for statistical processing.

Conditions

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Type 1 Diabetes C-peptide Diabetes Complications

Study Design

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Observational Model Type

COHORT

Study Time Perspective

CROSS_SECTIONAL

Eligibility Criteria

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Inclusion Criteria

* Type 1 diabetes
* Informed consent form

Exclusion Criteria

* Known macrovascular complications
* Known serious microvascular complications
Minimum Eligible Age

15 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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National and Kapodistrian University of Athens

OTHER

Sponsor Role lead

Responsible Party

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Alexandros Kokkinos

Associate Professor in Internal Medicine

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Alexandros Kokkinos

Role: PRINCIPAL_INVESTIGATOR

First Department of Propaedeutic Medicine, University of Athens

Locations

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Diabetes Clinical Research Laboratory, 1st Department of Propaedeutic Internal Medicine

Athens, , Greece

Site Status RECRUITING

Countries

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Greece

Central Contacts

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Alexandros Kokkinos

Role: CONTACT

+302132061248

Facility Contacts

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Alexandros Kokkinos, MD, PhD

Role: primary

+302132061248

Other Identifiers

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T1DM C-peptide

Identifier Type: -

Identifier Source: org_study_id

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