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ENDOTHELIAL DYSFUNCTION IN ACROMEGALIC PATIENTS: A CASE-CONTROL STUDY
S Ghiorghe1, A Dragomir2, D Bartos3
1"Policlinico di Monza" Medical Center, Dept. of Cardiology, Bucharest, Romania.
Insights
Cardiovascular risk in acromegaly patients is better assessed by endothelial dysfunction than traditional factors. Growth hormone levels significantly correlate with this dysfunction, suggesting a unique risk evaluation approach.
Area of Science:
- Endocrinology
- Cardiology
- Vascular Medicine
Background:
- Traditional cardiovascular risk factors are insufficient for assessing risk in acromegaly patients.
- Endothelial dysfunction is proposed as a more accurate indicator of cardiovascular risk in acromegaly.
Observation:
- The study compared endothelial dysfunction in 54 acromegaly patients and 64 hypertensive patients using flow-mediated dilation (FMD).
- Endothelial dysfunction was more prevalent in the acromegaly group (61.10%) compared to the hypertensive group (32.10%).
- Higher growth hormone (GH) levels strongly correlated with endothelial dysfunction in acromegaly patients.
Findings:
- Acromegaly patients exhibited a higher prevalence of endothelial dysfunction than hypertensive patients, despite fewer traditional cardiovascular risk factors.
- Growth hormone (GH) levels showed the strongest correlation with endothelial dysfunction in the acromegaly cohort.
- Traditional cardiovascular risk factors were less significant in predicting endothelial dysfunction in acromegaly.
Implications:
- Cardiovascular risk assessment in acromegaly requires a different approach than in the general population.
- Monitoring GH levels is crucial for managing cardiovascular risk in acromegaly.
- Further research into tailored cardiovascular risk management strategies for acromegaly is warranted.
Purpose:
Assessing cardiovascular risk in patients with acromegaly using traditional cardiovascular risk factors is inadequate. Endothelial dysfunction seems to be a much better indicator for assessing cardiovascular risk in acromegaly. The study aims to compare from this point of view two groups of patients, with hypertension and with acromegaly.
Methods:
The first group consists of 54 patients with acromegaly and the second group of 64 hypertensive patients. Endothelial dysfunction was evaluated by the FMD method. The relationship between endothelial dysfunction, specific humoral markers of acromegaly and traditional cardiovascular risk factors was analysed in both groups.
Results:
Although the presence of cardiovascular risk factors was statistically significantly higher in the group of hypertensives (the most important were age, blood pressure, glycemia, hypertriglyceridemia and SCORE), the presence of endothelial dysfunction was higher in the acromegaly group (61.10% vs. 32.10%, p=0.02). The best correlation with endothelial dysfunction in acromegaly group was the level of GH (28.9±28 vs. 11.7±10.3, p=0.003).
Conclusions:
The presence of endothelial dysfunction in patients with acromegaly is highly dependent on the level of GH and traditional cardiovascular risk factors are less important. In these patients the cardiovascular risk should not be evaluated in the same way as in normal population.
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