Relationships between Cardio-Ankle Vascular Index and Peptides Related to Hypertensive Disorders of Pregnancy in Patients with Lower Extremity Arterial Disease
Related Experiment Video
Updated: May 12, 2025

Assessment of Vascular Tone Responsiveness using Isolated Mesenteric Arteries with a Focus on Modulation by Perivascular Adipose Tissues
Published on: June 3, 2019
Ichiro Wakabayashi1, Yoko Sotoda2
1Department of Environmental and Preventive Medicine, School of Medicine, Hyogo Medical University, Nishinomiya, Japan.
Insights
Two hypertensive disorder of pregnancy (HDP)-related peptides, P-2091 and P-2378, correlate with diff-CAVI, an indicator of leg ischemia in lower extremity arterial disease (LEAD) patients. These peptides may serve as novel biomarkers for assessing leg ischemia severity in LEAD.
Area of Science:
- Vascular Medicine
- Biomarker Discovery
- Cardiovascular Research
Background:
- Cardio-ankle vascular index (CAVI) measures arterial stiffness, independent of blood pressure.
- The difference in CAVI between legs (diff-CAVI) is a potential indicator for leg ischemia in lower extremity arterial disease (LEAD).
- Hypertensive disorders of pregnancy (HDP)-related peptides are investigated as potential biomarkers for leg ischemia.
Purpose of the Study:
- To investigate the relationship between diff-CAVI and serum levels of seven HDP-related peptides in LEAD patients.
- To determine if HDP-related peptides can serve as biomarkers for leg ischemia in LEAD.
Main Methods:
- 165 outpatients with LEAD receiving medication therapy were studied.
- Serum levels of seven HDP-related peptides were measured using mass spectrometry.
- Correlations between diff-CAVI and peptide levels were analyzed, including multivariate analyses.
Main Results:
- Peptides P-2091 and P-2378 showed significant positive correlations with diff-CAVI.
- Higher tertiles of P-2091 and P-2378 were associated with significantly higher odds of large diff-CAVI (≥1.05).
- These associations remained significant and independent of common risk factors in multivariate analyses.
Conclusions:
- HDP-related peptides P-2091 and P-2378 are associated with diff-CAVI in LEAD patients.
- These peptides show potential as useful indicators for leg ischemia in patients with LEAD.
Introduction:
Cardio-ankle vascular index (CAVI), a blood pressure-independent measure of heart-ankle pulse wave velocity, is a relatively new indicator of arterial stiffness. The absolute value of the difference in right CAVI and left CAVI (diff-CAVI) has been proposed as a new indicator of leg ischemia in patients with lower extremity arterial disease (LEAD). The aim of this study was to elucidate the relationships between diff-CAVI and peptides related to hypertensive disorders of pregnancy (HDP), which have been proposed as biomarkers for leg ischemia in patients with LEAD.
Methods:
The participants were 165 outpatients with LEAD who had already received medication therapy for LEAD. The relationships between diff-CAVI and serum levels of the seven HDP-related peptides, which were measured by mass spectrometry, were investigated.
Results:
HDP-related peptides with m/z 2091 (P-2091) and m/z 2378 (P-2378) showed significant positive correlations with diff-CAVI, and odds ratios (ORs) for large diff-CAVI (≥1.05) of the 3rd vs. 1st tertile groups of P-2091 (OR [99.3% confidence interval]: 3.71 [1.24-11.15]) and P-2378 (OR: 4.46 [1.39-14.30]) were significantly higher (p < 0.01) than the reference level. The associations of P-2091 and P-2378 with diff-CAVI were shown to be independent of age, gender, habit of smoking, history of diabetes, BMI, and blood pressure in multivariate analyses. The other peptides with m/z 2081, 2127, 2209, 2858, and 3156 did not show significant associations with diff-CAVI.
Conclusion:
P-2091 and P-2378 were associated with diff-CAVI and are thought to be useful indicators of leg ischemia in patients with LEAD.
Related Concept Videos
Assessment of the Cardiovascular System III: Palpation
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above...
Treatment for Pulmonary Arterial Hypertension: Endothelin Receptor Antagonists
ETs are synthesized through a complex sequence of enzymatic steps, primarily involving an enzyme referred to as endothelin-converting enzyme...
Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
Hormonal Regulation
Pre-Procedural Guidelines for Assessing Blood Pressure
Pulse Assessment Sites

