Author Interviews, Blood Pressure - Hypertension, Exercise - Fitness, Heart Disease, JAMA / 05.08.2021 Interview with: Fernando Ribeiro PhD School of Health Sciences Institute of Biomedicine - iBiMED University of Aveiro Aveiro, Portugal What is the background for this study? What are the main findings? Response: Resistant hypertension is a puzzling problem without a clear solution. The available treatment options to lower blood pressure, namely medication and renal denervation, have had limited success, making nonpharmacological strategies good candidates to optimize the treatment of this condition. Exercise training is consistently recommended as adjuvant therapy for patients with hypertension, yet, it is with a great delay that the efficacy of exercise training is being tested in patients with resistant hypertension. Having that in mind, the EnRicH trial was designed to address whether the benefits of an exercise intervention with proven results in hypertensive individuals are extended to patients with resistant hypertension, a clinical population with low responsiveness to drug therapy. Exercise training was safe and associated with a significant and clinically relevant reduction in 24-hour, daytime ambulatory, and office blood pressure compared with control (usual care). (more…)
AHA Journals, Author Interviews, Blood Pressure - Hypertension, Kidney Disease / 04.08.2021 Interview with: Maria Luisa S. Sequeira Lopez, MD, FAHA Harrison Distinguished Professor in Pediatrics and Biology University of Virginia Charlottesville, VA 22908 What is the background for this study? Response: The renin-angiotensin system (RAS) is crucial in the regulation of the blood pressure (BP). Synthesis and secretion of renin is the key regulated event in the operation of the RAS. One of the main mechanisms that control renin synthesis and release is the baroreceptor mechanism whereby a decrease in blood pressure results in increased release of renin by juxtaglomerular (JG) cells. In spite of its enormous importance, the nature and location of the renal baroreceptor was still unknown. This was due in great part to the lack of appropriate in vitro and in vivo models to confidently allow tracking of the fate and isolation of renin cells, and the lack of tools to study the chromatin in scarce cells. (more…)
AHA Journals, Author Interviews, Blood Pressure - Hypertension, Cognitive Issues, Memory / 21.06.2021 Interview with: Daniel A. Nation, Ph.D., Associate Professor of Psychological Science Institute for Memory Impairments and Neurological Disorders University of California, Irvin What is the background for this study? Response: Hypertension is a risk factor for cognitive decline and dementia, and treatment of hypertension has been linked to decreased risk for cognitive impairment. Prior studies have attempted to identify which specific type of antihypertensive treatment conveys the most benefit for cognition, but findings have been mixed regarding this question.  We hypothesized that antihypertensive drugs acting on the brain angiotensin system may convey the greatest benefit since they affect the brain angiotensin system that has been implicated in memory function. (more…)
Author Interviews, Blood Pressure - Hypertension, JAMA, USPSTF / 07.05.2021 Interview with: John B. Wong, M.D. Chief Scientific Officer Vice chair for Clinical Affairs Chief of the Division of Clinical Decision Making and Primary care Clinician Department of Medicine at Tufts Medical Center What is the background for this study? Response: Hypertension affects nearly half of all adults in the United States and is a major risk factor for many serious health conditions. Fortunately, by screening all adults for hypertension, clinicians can improve their patient’s health. The Task Force continues to recommend screening all adults for hypertension so that they can get the care they need to help prevent health conditions such as heart attack, stroke, and kidney failure. (more…)
AHA Journals, Author Interviews, Baylor College of Medicine Houston, Blood Pressure - Hypertension, Microbiome / 30.04.2021 Interview with: David J. Durgan, PhD Department of Anesthesiology Baylor College of Medicine Houston, TX What is the background for this study? Response: Our lab and others had previously shown that gut dysbiosis is not only associated with hypertension, but actually plays a causal role. For example we have shown in both a genetic model of hypertension as well as an obstructive sleep apnea induced model of hypertension, that transplantation of their dysbiotic microbiota into normotensive recipients induced elevations in blood pressure. With this understanding our focus shifted to two new questions 1) How can we manipulate the microbiota to improve/prevent hypertension, and 2) What are the signals originating from the microbiota that have the capability to influence host blood pressure? These questions lead to the experimental design of this study. (more…)