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

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT00172406
First Posted: September 15, 2005
Last Update Posted: December 9, 2005
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by:
National Taiwan University Hospital
  Purpose
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.

Condition
Hypertension

Study Type: Observational
Study Design: Observational Model: Defined Population
Observational Model: Natural History
Time Perspective: Cross-Sectional
Time Perspective: Prospective

Further study details as provided by National Taiwan University Hospital:

  Eligibility

Information from the National Library of Medicine

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Ages Eligible for Study:   Child, Adult, Senior
Sexes Eligible for Study:   All
Criteria

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.
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00172406


Sponsors and Collaborators
National Taiwan University Hospital
Investigators
Principal Investigator: Yi-Lwun Ho, MD, PhD National Taiwan University Hospital
  More Information

ClinicalTrials.gov Identifier: NCT00172406     History of Changes
Other Study ID Numbers: 9361700202
First Submitted: September 12, 2005
First Posted: September 15, 2005
Last Update Posted: December 9, 2005
Last Verified: August 2005