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Endocan and Non-Dipping Circadian Pattern in Newly Diagnosed Essential Hypertension

BACKGROUND AND OBJECTIVES: Non-dipper hypertension is frequently accompanied by endothelial dysfunction and activation. Previous studies suggested that endocan may be a novel endothelial dysfunction marker. This study aims to investigate the association between circadian blood pressure (BP) pattern...

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Detalles Bibliográficos
Autores principales: Çimen, Tolga, Bilgin, Murat, Akyel, Ahmet, Felekoğlu, Mehmet Ali, Nallbani, Ali, Özdemir, Şeyda, Erden, Gönül, Öztürk, Alpaslan, Doğan, Mehmet, Yeter, Ekrem
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Korean Society of Cardiology 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5099339/
https://www.ncbi.nlm.nih.gov/pubmed/27826342
http://dx.doi.org/10.4070/kcj.2016.46.6.827
Descripción
Sumario:BACKGROUND AND OBJECTIVES: Non-dipper hypertension is frequently accompanied by endothelial dysfunction and activation. Previous studies suggested that endocan may be a novel endothelial dysfunction marker. This study aims to investigate the association between circadian blood pressure (BP) pattern and plasma endocan levels together with high-sensitivity C-reactive protein (hsCRP) in patients with newly diagnosed untreated hypertension. SUBJECTS AND METHODS: Twenty-four hour ambulatory blood pressure monitoring was recorded in 35 dipper, 35 non-dipper hypertensives and 35 healthy controls. Endocan levels were measured by enzyme-linked immunosorbent assay. Serum levels of hsCRP were also recorded. RESULTS: Despite similar daytime and 24-hour average BP values between dippers and non-dippers, statistically significant high nocturnal BP was accompanied by a non-dipping pattern (Systolic BP: 132±9 vs. 147±11 mmHg; Distolic BP: 80±7 vs. 91±9 mmHg, respectively, p<0.001 for both). Non-dipper patients demonstrated higher endocan levels compared to dippers and normotensives (367 (193-844) pg/mL, 254 (182-512) pg/mL and 237 (141-314) pg/ml, respectively, p<0.001). HsCRP levels were significantly higher in non-dippers than the other groups (p=0.013). In a multivariate logistic regression analysis, endocan (p=0.021) and hsCRP (p=0.044) were independently associated with a non-dipping pattern. CONCLUSION: Elevated endocan levels were found in non-dipper groups. Endocan and hsCRP were found to be independently associated with a non-dipping pattern. We suggest that elevated levels of endocan in non-dipper hypertensive patients might be associated with a longer duration of exposure to high BP. These results point to the possible future role of endocan in selection of hypertensive patients at higher risk or target organ damage.