Abstract
Background
Atherosclerotic changes can be attributed to early endothelial damage in individuals with hypertension. We aimed to explore the relationship between endothelial dysfunction and hypertension in newly diagnosed children without end-organ damage, considering carotid intima-media thickness (CIMT), flow-mediated dilatation (FMD), and functional capillaroscopy parameters. We also analyzed the differences between dipper and non-dipper patients.
Methods
In this cross-sectional study, 20 patients diagnosed with essential hypertension with no target organ damage, and 20 age and sex-matched healthy volunteers were enrolled. The patient group comprised newly diagnosed individuals not receiving antihypertensive treatment. Hypertensive patients were divided into two groups (dipper and non-dipper patients). The measurements of CIMT, brachial FMD, and functional capillaroscopy were performed before starting treatment.
Results
Among the patients, 11 were boys, and 9 were girls, with a median age of 16.0 (2.13) years. Of 20 hypertensive patients, 10 were dipper and 10 were non-dipper. Significant differences were observed between the hypertensive patients and controls in terms of CIMT (p = 0.04), brachial artery FMD (p = 0.02), and functional capillary density (p < 0.001). Hypertensive patients exhibited increased CIMT, reduced brachial artery FMD, and lower capillary density. However, there were no differences between dippers and non-dippers regarding age, sex, height SDS, weight SDS, CIMT SDS, brachial artery FMD, and capillary density.
Conclusions
Understanding the vascular consequences associated with essential hypertension emphasizes the importance of early detection and management of hypertension. Herein, we have effectively highlighted significant endothelial changes through the analysis of three parameters in newly diagnosed children without apparent target organ damage.
Graphical abstract
Similar content being viewed by others
Data Availability
The data are available from the corresponding author upon request.
References
Halbach SM, Flynn JT (2023) Childhood primary hypertension: not uncommon, not benign. Hypertension 80:1197–1198
Lurbe E, Torro MI, Alvarez J (2013) Ambulatory blood pressure monitoring in children and adolescents: coming of age? Curr Hypertens Rep 15:143–149
Cuspidi C, Sala C, Tadic M et al (2015) Non-dipping pattern and subclinical cardiac damage in untreated hypertension: a systematic review and meta-analysis of echocardiographic studies. Am J Hypertens 28:1392–1402
Eelen G, de Zeeuw P, Simons M, Carmeliet P (2015) Endothelial cell metabolism in normal and diseased vasculature. Circ Res 116:1231–1244
Gallo G, Volpe M, Savoia C (2021) Endothelial dysfunction in hypertension: current concepts and clinical implications. Front Med (Lausanne) 8:798958
Singh S, Kothari SS, Bahl VK (2004) Coronary slow flow phenomenon: an angiographic curiosity. Indian Heart J 56:613–617
Simon A, Gariepy J, Chironi G, Megnien JL, Levenson J (2002) Intima-media thickness: a new tool for diagnosis and treatment of cardiovascular risk. J Hypertens 20:159–169
Ghiadoni L, Salvetti M, Muiesan ML, Taddei S (2015) Evaluation of endothelial function by flow mediated dilation: methodological issues and clinical importance. High Blood Press Cardiovasc Prev 22:17–22
Cutolo M, Smith V (2013) State of the art on nailfold capillaroscopy: a reliable diagnostic tool and putative biomarker in rheumatology? Rheumatology (Oxford) 52:1933–1940
Foster BJ, Mackie AS, Mitsnefes M et al (2008) A novel method of expressing left ventricular mass relative to body size in children. Circulation 27:2769–2775
Neyzi O, Bundak R, Gokcay G et al (2015) Reference values for weight, height, head circumference, and body mass index in Turkish children. J Clin Res Pediatr Endocrinol 7:280–293
Wuhl E, Witte K, Soergel M, Mehls O, Schaefer F, German Working Group on Pediatric Hypertension (2002) Distribution of 24-h ambulatory blood pressure in children: normalized reference values and role of body dimensions. J Hypertens 20:1995–2007
Weber T, Wassertheurer S, Rammer M et al (2011) Validation of a brachial cuff-based method for estimating central systolic blood pressure. Hypertension 58:825–832
Basalely A, Hill-Horowitz T, Sethna CB (2023) Ambulatory blood pressure monitoring in pediatrics, an update on interpretation and classification of hypertension phenotypes. Curr Hypertens Rep 25:1–11
Jourdan C, Wuhl E, Litwin M et al (2005) Normative values for intima-media thickness and distensibility of large arteries in healthy adolescents. J Hypertens 23:1707–1715
Celermajer DS, Sorensen KE, Gooch VM et al (1992) Non-invasive detection of endothelial dysfunction in children and adults at risk of atherosclerosis. Lancet 340:1111–1115
Serne EH, Gans RO, ter Maaten JC et al (2001) Impaired skin capillary recruitment in essential hypertension is caused by both functional and structural capillary rarefaction. Hypertension 38:238–242
Serne EH, Gans RO, ter Maaten JC et al (2001) Capillary recruitment is impaired in essential hypertension and relates to insulin’s metabolic and vascular actions. Cardiovasc Res 49:161–168
Cheng C, Daskalakis C, Falkner B (2010) Association of capillary density and function measures with blood pressure, fasting plasma glucose, and insulin sensitivity. J Clin Hypertens (Greenwich) 12:125–135
Conkar S, Yilmaz E, Hacikara S, Bozabali S, Mir S (2015) Is daytime systolic load an important risk factor for target organ damage in pediatric hypertension? J Clin Hypertens (Greenwich) 17:760–766
Modena MG, Bonetti L, Coppi F, Bursi F, Rossi R (2002) Prognostic role of reversible endothelial dysfunction in hypertensive postmenopausal women. J Am Coll Cardiol 40:505–510
Shimbo D, Grahame-Clarke C, Miyake Y et al (2007) The association between endothelial dysfunction and cardiovascular outcomes in a population-based multi-ethnic cohort. Atherosclerosis 192:197–203
Yeboah J, Crouse JR, Hsu FC, Burke GL, Herrington DM (2007) Brachial flow-mediated dilation predicts incident cardiovascular events in older adults: the cardiovascular health study. Circulation 115:2390–2397
Jurko A Jr, Jurko T, Minarik M et al (2018) Endothelial function in children with white-coat hypertension. Heart Vessels 33:657–663
Evrengul H, Tanriverdi H, Kilic ID et al (2012) Aortic stiffness and flow-mediated dilatation in normotensive offspring of parents with hypertension. Cardiol Young 22:451–456
Lande MB, Carson NL, Roy J, Meagher CC (2006) Effects of childhood primary hypertension on carotid intima media thickness: a matched controlled study. Hypertension 48:40–44
Juonala M, Magnussen CG, Venn A et al (2010) Influence of age on associations between childhood risk factors and carotid intima-media thickness in adulthood: the cardiovascular risk in young finns study, the childhood determinants of adult health study, the Bogalusa heart study, and the Muscatine study for the international childhood cardiovascular cohort (i3C) consortium. Circulation 122:2514–2520
Junqueira CLC, Magalhaes MEC, Brandao AA et al (2018) Microcirculation and biomarkers in patients with resistant or mild-to-moderate hypertension: a cross-sectional study. Hypertens Res 41:515–523
Penna GL, Garbero Rde F, Neves MF, Oigman W, Bottino DA, Bouskela E (2008) Treatment of essential hypertension does not normalize capillary rarefaction. Clinics (Sao Paulo) 63:613–618
Ozen K, Karahan MZ (2023) Non-dipper blood pressure impact on coronary slow flow in hypertensive patients with normal coronary arteries. Cureus 15:e33356
Huang CCLH, Wu TC, Lin SJ, Chen JW (2009) Circadian variation of blood pressure is correlated to vascular endothelial function in nondiabetic essential hypertensives. Acta Cardiol Sin 25:134–141
Higashi Y, Nakagawa K, Kimura M et al (2002) Circadian variation of blood pressure and endothelial function in patients with essential hypertension: a comparison of dippers and non-dippers. J Am Coll Cardiol 40:2039–2043
Funding
No financial support or funding was received for this paper.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Ethical approval
The protocol of the study was approved by the Ethical Commission for Research from Kocaeli University School of Medicine (KÜ-GOKAEK-2023/03.07). Informed consent was obtained from all participants before the study.
Conflict of interest statement
The authors declare that there is no conflict of interest in this article.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Large Language Models (LLMs) such as ChatGPT were not used in the study.
Supplementary information
Below is the link to the electronic supplementary material.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Doğan, K., Başar, E.Z., Aytaç, M.B. et al. Evaluation of endothelial dysfunction in hypertensive children and adolescents. Pediatr Nephrol 39, 1193–1199 (2024). https://doi.org/10.1007/s00467-023-06205-4
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00467-023-06205-4