Validation of Swine Model for Testing a Novel Therapy for Postoperative Atrial Fibrillation using Nanoformulated Calcium Chloride to Suppress Cardiac Ganglionated Plexi

使用纳米氯化钙抑制心脏神经节丛来测试术后心房颤动新疗法的猪模型的验证

• 批准号: 10514602
• 负责人: Alex Y Tan
• 金额: --
• 依托单位: VA VETERANS ADMINISTRATION HOSPITAL
• 依托单位国家: 美国
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-10-01 至 2025-09-30
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10514602
• 关键词: Acute; Adverse effects; Affect; Anatomy; Animal Model; Arrhythmia; Atrial Fibrillation; Autonomic nervous system; Calcium; Calcium Chloride; Canis familiaris; Cardiac; Cardiac Surgery procedures; Characteristics; Chronic; Complication; Coronary Artery Bypass; Data; Development; Electrophysiology (science); Family suidae; Glutamates; Glycolic-Lactic Acid Polyester; Goals; Health Expenditures; Heart; Heart Atrium; Heart failure; Human; Incidence; Inflammation; Injury; Institution; Length of Stay; Mediating; Methods; Microinjections; Miniature Swine; Modeling; Operative Surgical Procedures; Patients; Pericardial body location; Pericarditis; Postoperative Period; Predisposition; Prevention therapy; Publishing; Recurrence; Reporting; Risk; Safety; Site; Surgical Models; Testing; Thoracotomy; Validation; autonomic nerve; canine model; clinical translation; cost; cost effective; high risk population; in vivo; in vivo Model; injury and repair; military veteran; myocardial damage; nano; nanoparticle; neural; neuron apoptosis; neuroregulation; novel; novel therapeutics; porcine model; prevent; response; safety testing

The goal of this proposal is to validate the feasibility of the swine model to test our novel therapy for the prevention of postoperative atrial fibrillation (POAF). POAF is the most common complication from cardiac surgery affecting 30%-50% of patients after coronary artery bypass grafting and/or valve surgeries. POAF leads to increased heart failure and hospital stays, costing an excess of US$2 billion per annum. POAF is an independent predictor of the development of AF long term. POAF is a highly prevalent issue in the veteran population. We recently reported a 40% incidence of POAF at our institution, with a 30% 5-year risk of recurrence of AF compared to 3% without POAF. Overactivity of the cardiac autonomic nervous system (CANS), is an important substrate for both POAF and AF. We hypothesize that neuromodulation of CANS can suppress POAF. We recently published in a canine model of POAF, that microinjection of nanoformulated CaCl2 into cardiac ganglionated plexi (GP), a critical component of the CANS, during open heart surgery, suppresses/prevents POAF. The mechanism of action is by inducing neuronal apoptosis in GP thus protecting the heart from sympathetic surge and inducing reverse remodeling of the heart, with potentially long term suppression of AF.7 The goals of this proposal are to (a) validate our successful canine model of POAF in Yucatan miniature swine species (b) test the safety and efficacy of nCaCl2 for neuromodulation and suppression POAF vulnerability in swine. Validating the swine model facilitates clinical translation of our novel therapy with the significance of targeted, effective and safe therapy for POAF and potentially long term suppression of AF vulnerability in a high-risk population.

该提案的目的是验证猪模型的可行性，以测试我们的新疗法 预防术后房颤（POAF）。 POAF是心脏最常见的并发症 冠状动脉搭桥术和/或瓣膜手术后，手术影响30％-50％的患者。 POAF 导致心力衰竭增加和住院，每年耗资超过20亿美元。 POAF是一个 长期发展的独立预测指标。 POAF是老兵非常普遍的问题 人口。我们最近在我们的机构报告了POAF的40％，5年的5年风险 AF的复发，而没有POAF的3％。心脏自主神经系统的过度活动 （罐），是POAF和AF的重要底物。我们假设罐的神经调节罐 抑制POAF。我们最近在POAF的犬模型中发表了纳米形式的显微注射 CaCl2进入心脏手术期间的心脏神经节plexi（GP），这是罐子的关键成分 抑制/阻止POAF。作用机理是通过诱导GP的神经元凋亡来保护 同情激增的心脏和诱导心脏反向重塑的心脏，潜在的长期 抑制AF.7该提案的目标是（a）验证我们成功的POAF犬模型 Yucatan微型猪（B）测试NCACL2神经调节和功效的安全性和功效 抑制猪中的poaf脆弱性。验证猪模型有助于我们小说的临床翻译 具有针对性，有效且安全的POAF和潜在长期治疗的意义 在高危人群中抑制AF脆弱性。