The Relation Between Serum Level of Amioterminal Propeptide of Type I Procollagen and Diastolic Dysfunction in Hypertensive Patients Without Diabetes Mellitus

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

Study Classification

OBSERVATIONAL

Brief Summary

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In the present study, we assessed the relation between diastolic dysfunction and myocardial fibrosis in hypertensive patients without diabetes mellitus. A total of 20 medically treated ambulatory non-diabetic hypertensive patients with normal left ventricular (LV) systolic function were enrolled into this study. Myocardial fibrosis was evaluated by serum concentrations of amino-terminal propeptides of type I and III procollagen (PINP and PIIINP). All patients underwent examinations of diastolic function by echocardiography and technetium-99m (99mTc) radionuclide ventriculography. There were 8 patients with PINP ≦53 μg/l (group 1) and 12 patients with PINP \>53 μg/l (group 2). Patients in group 2 had significantly lower LV peak filling rate (PFR; 3.2 ± 0.3 vs. 2.5 ± 0.2 end-diastolic volume/s) and shorter time to PFR ( 257 ± 41 vs. 174 ± 22 ms). Besides, the group 2 patients also had lower right ventricle PFR (1.9 ± 0.2 vs. 1.5 ± 0.1 end-diastolic volume/s) and shorter time to PFR ( 221 ± 29 vs. 154 ± 29 ms). Echocardiographic parameters for LV diastolic dysfunction (E/A ratio of mitral flow, deceleration time of E flow, velocities of pulmonary venous flow \[retrograde A wave, systolic /diastolic velocity ratio\], isovolumetric relaxation time, Tei index) were all comparable between two groups. In multiple regression analysis, LV time to peak filling rate was the only parameter that independently predicted serum PINP level (p\<0.05). In conclusion, elevated serum PINP level reflected LV diastolic dysfunction in hypertensive patients without diabetes.

Detailed Description

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Conditions

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Hypertension

Study Design

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Observational Model Type

DEFINED_POPULATION

Study Time Perspective

OTHER

Eligibility Criteria

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Inclusion Criteria

* We enrolled 20 medically treated ambulatory, non-diabetic, hypertensive patients in this study.

Exclusion Criteria

* Patients with abnormal liver functions, leukocytosis, elevated serum levels of C-reactive protein, systolic dysfunction (LV ejection fraction \<50%) and LV hypertrophy due to etiologies other than hypertension were excluded from this study.

Minimum Eligible Age

0 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Principal Investigators

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Yi-Lwun Ho, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

National Taiwan University Hospital

Other Identifiers

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9361700202

Identifier Type: -

Identifier Source: org_study_id