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Association between cardiotrophin 1 levels and central blood pressure in untreated patients with essential
Eugenia Gkaliagkousi1, Eleni Gavriilaki, Barbara Nikolaidou
12nd Propedeutic Department of Internal Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece.
Insights
Cardiotrophin 1 (CT-1) is elevated in untreated essential hypertension (EH) patients and correlates with higher blood pressure and arterial stiffness. This suggests CT-1 may play a role in cardiovascular damage in EH.
Area of Science:
- Cardiovascular Research
- Hypertension Pathophysiology
- Cytokine Signaling
Background:
- Cardiotrophin 1 (CT-1), an IL-6-related cytokine, is linked to cardiac hypertrophy and vascular damage.
- Essential hypertension (EH) is a condition associated with cardiovascular risks.
Purpose of the Study:
- To quantify CT-1 levels in untreated grade I EH patients versus normotensive (NT) individuals.
- To explore the relationship between CT-1 levels and arterial stiffness indices in EH.
Main Methods:
- Enrolled 45 untreated grade I EH patients and 25 NT subjects.
- Measured CT-1 levels using ELISA.
- Assessed arterial stiffness via applanation tonometry.
Main Results:
- CT-1 levels were significantly higher in EH patients (P < 0.001).
- CT-1 positively correlated with office, ambulatory, and central blood pressure.
- CT-1 levels showed a significant correlation with pulse wave velocity (P = 0.02).
- Central systolic and diastolic BP were the sole significant predictors of CT-1 in multivariable analysis.
Conclusions:
- This study is the first to link CT-1 levels with ambulatory/central BP and pulse wave velocity in EH.
- CT-1's role in the cardiovascular system of EH patients warrants further investigation.
Background:
Cardiotrophin 1 (CT-1) is an interleukin 6-related cytokine recently implicated in cardiac hypertrophy and vascular damage in essential hypertension (EH). We aimed first to determine CT-1 levels in naive, untreated patients with grade I EH (UH) as compared with normotensive (NT) individuals and, second, to investigate a possible association of CT-1 levels with indices of arterial stiffness.
Methods:
We enrolled 45 consecutive untreated patients recently diagnosed with grade I EH by means of office and ambulatory blood pressure (BP) measurements and 25 age- and sex-matched NT subjects. CT-1 levels were measured with a commercially available enzyme-linked immunosorbent assay kit, and indices of arterial stiffness were determined by applanation tonometry.
Results:
CT-1 levels were significantly elevated in UH patients compared with NT subjects (P < 0.001). Furthermore, CT-1 levels correlated positively with office, ambulatory and central BP. A significant bivariable correlation was also found between CT-1 levels and pulse wave velocity (P = 0.02). In the multivariable analysis, central systolic and diastolic BP proved the only significant predictors of CT-1 levels after controlling for other related factors.
Conclusions:
To our knowledge, this is the first study that correlates CT-1 levels with ambulatory and central BP, as well as with pulse wave velocity in patients with essential hypertension. Thus, studying the effects of CT-1 in the cardiovascular system in patients with EH represents a promising area of investigation in the future.
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