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Baroreceptors, sensors that play a role in controlling arterial blood pressure (BP), are mechanical stretch receptors located in the aortic arch and carotid sinuses. Factors affecting the degree of stretch in the vessel wall with BP, such as increased arterial stiffness, may compromise baroreceptor sensitivity (BRS) to BP changes. Yet, evidence of this is scattered, as both baroreceptor sensitivity (BRS) and arterial stiffness are calculated variables with multiple methodological approaches. This pilot study (n=10) investigates the correlation of arterial stiffness and BRS using multiple BRS calculation techniques (spectral and sequence methodologies at aortic and finger sites) and arterial stiffness measurement [carotid-femoral pulse wave velocity (cfPWV), carotid compliance and distensibility]. BRS was assessed under resting BP conditions and during BP altered by maneuvers (0.1 Hz controlled breathing and leg ischemia). Magnitude of arterial stiffness - BRS correlation was positive for carotid distensibility and compliance, and negative for cfPWV, supporting the theory. A sample size of 100 participants (not rounded - exact figure by power calculation) would be required to confirm or reject all permutations of correlation between BRS by multiple calculation methods and large artery stiffness by PWV and compliance/distensibility measures.
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http://dx.doi.org/10.1109/EMBC40787.2023.10340723 | DOI Listing |
Clin Exp Nephrol
December 2024
Department of Pediatric Nephrology, Ulus Maternity and Child Health and Diseases Training and Research Hospital, Dr. Sami, Ankara, Turkey.
Background: Patients diagnosed with congenital kidney malformations are at an increased risk of developing hypertension, proteinuria, and progressing to chronic kidney disease (CKD). The present study aimed to determine the frequency of masked hypertension and ambulatory arterial stiffness index (AASI) in patients with congenital kidney malformations.
Methods: The study included 174 patients with congenital kidney malformations (48 patients with unilateral renal agenesis (URA), 40 patients with ectopic kidney (EK), 36 patients with horseshoe kidney (HK), 31 patients with multicystic dysplastic kidney (MCDK), 19 patients with unilateral renal hypoplasia (URH), and 45 healthy controls.
Eur J Nutr
December 2024
Department of Nutrition and Movement Sciences, NUTRIM Research Institute of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Universiteitssingel 50, PO Box 616, 6200 MD, Maastricht, The Netherlands.
Purpose: The dietary egg-protein hydrolysate Newtricious (NWT)-03 has previously demonstrated improvements in blood pressure and metabolic profiles. However, the long-term effects on vascular function and cardiometabolic risk markers are unknown.
Methods: Forty-four older (aged 60-75) adults with overweight/obesity experiencing elevated Subjective Cognitive Failures (SCF) were randomized into a 36-week, double-blind, placebo-controlled trial.
Front Med (Lausanne)
December 2024
Metabolismo Óseo, Vascular y Enfermedades Inflamatorias Crónicas, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain.
Introduction: Cardiovascular disease is the major cause of premature death in chronic kidney disease (CKD) and vascular damage is often detected belatedly, usually evaluated by expensive and invasive techniques. CKD involves specific risk factors that lead to vascular calcification and atherosclerosis, where inflammation plays a critical role. However, there are few inflammation-related markers to predict vascular damage in CKD.
View Article and Find Full Text PDFAm J Physiol Heart Circ Physiol
December 2024
Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY.
Background: Chronic kidney disease (CKD) is on the rise, and over 50% of patients die from cardiac causes. Patients develop heart failure due to unelucidated reno-cardiac interactions, termed type 4 cardiorenal syndrome (CRS4). The aim of this study is to establish and characterize a reliable model of CRS4 in swine with marked cardiac diastolic dysfunction.
View Article and Find Full Text PDFArterial stiffness is a key contributor to cardiovascular diseases, including atherosclerosis, restenosis, and coronary artery disease, it has been characterized to be associated with the aberrant migration of vascular smooth muscle cells (VSMCs). However, the underlying molecular mechanisms driving VSMC migration in stiff environments remain incompletely understood. We recently demonstrated that survivin, a member of the inhibitor of apoptosis protein family, is highly expressed in both mouse and human VSMCs cultured on stiff polyacrylamide hydrogels, where it modulates stiffness-mediated cell cycle progression and proliferation.
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