Binge Alcohol Consumption Elevates Sympathetic Transduction to Blood Pressure: A Randomized Controlled Trial

傍晚 血压 冷压试验 医学 交感神经系统 心率 早晨 内科学 交叉研究 心脏病学 内分泌学 天文 安慰剂 物理 病理 替代医学
作者
Jeremy A. Bigalke,Ian M. Greenlund,Tatiana X. Solis-Montenegro,John J. Durocher,Michael J. Joyner,Jason R. Carter
出处
期刊:Hypertension [Lippincott Williams & Wilkins]
卷期号:81 (10): 2140-2151
标识
DOI:10.1161/hypertensionaha.124.23416
摘要

BACKGROUND: Alcohol consumption is associated with cardiovascular disease, and the sympathetic nervous system is a suspected mediator. The present study investigated sympathetic transduction of muscle sympathetic nerve activity to blood pressure at rest and in response to cold pressor test following evening binge alcohol or fluid control, with the hypothesis that sympathetic transduction would be elevated the morning after binge alcohol consumption. METHODS: Using a randomized, fluid-controlled (FC) crossover design, 26 healthy adults (12 male, 14 female, 25±6 years, 27±4 kg/m 2 ) received an evening binge alcohol dose and a FC. All participants underwent next-morning autonomic-cardiovascular testing consisting of muscle sympathetic nerve activity, beat-to-beat blood pressure, and heart rate during a 10-minute rest period and a 2-minute cold pressor test. Sympathetic transduction was assessed at rest and during the cold pressor test in both experimental conditions. RESULTS: Evening alcohol increased heart rate (FC: 60±9 versus alcohol: 64±9 bpm; P =0.010) but did not alter resting mean arterial pressure (FC: 80±6 versus alcohol: 80±7 mm Hg; P =0.857) or muscle sympathetic nerve activity (FC: 18±9 versus alcohol: 20±8 bursts/min; P =0.283). Sympathetic transduction to mean arterial pressure (time×condition; P =0.003), diastolic blood pressure (time×condition; P =0.010), and total vascular conductance (time×condition; P =0.004) was augmented after alcohol at rest. Sympathetic transduction during the cold pressor test was also elevated after evening binge alcohol consumption ( P =0.002). CONCLUSIONS: These findings suggest that evening binge alcohol consumption leads to augmented morning-after sympathetic transduction of muscle sympathetic nerve activity to blood pressure, highlighting a new mechanism whereby chronic or excessive alcohol consumption contributes to cardiovascular disease progression via altered end-organ responsiveness to sympathetic neural outflow. REGISTRATION: URL: https://clinicaltrials.gov/study/NCT03567434 ; Unique identifier: NCT03567434.
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