Diureticactivities of xanthine or nonxanthine adenosineantagonists and their ameliorative effects against glycerol-induced acute renal failure in rats were investigated in order to clarify the physiological and pathological function of adenosine receptors in the kidney. Diuretic and natriuretic activities of a variety of adenosineantagonists clarified systematically for the first time that the blockade
为了阐明肾脏中腺苷受体的生理和病理功能,研究了黄嘌呤或非黄嘌呤腺苷拮抗剂的利尿作用及其对甘油诱导的急性肾衰竭的缓解作用。各种腺苷拮抗剂的利尿和利尿作用首次系统性地阐明,在钠和水的排泄中,A1受体的阻滞比A2受体的阻滞更重要,并支持内源性肾内腺苷水平直接增强肾小管钠吸收的假说。 。急性肾衰竭中8取代的黄嘌呤的构效关系研究表明,腺苷A1受体的激活是发展这种肾衰竭的重要因素。一系列8-(3-去甲金刚烷基)黄嘌呤表现出极强的利尿和利尿活性(24; 2.5微克/千克,po,治疗大鼠尿排泄值与对照大鼠尿排泄值之比= 1.69,该比率(治疗大鼠的Na + / K +相对于对照组大鼠的Na + / K + = 1.76)和抗甘油诱导的急性肾衰竭的有效改善作用(24; 10微克/ kg,腹腔注射,抑制55%)。通过对结构-活性关系的详细研究,我们可以推测,肾脏和大脑之间可能存在腺苷A1受体的一些组织差异,并
Xanthine derivatives
申请人:Kyowa Hakko Kogyo Co., Ltd.
公开号:US05068236A1
公开(公告)日:1991-11-26
Novel xanthine compounds represented by the following formula: ##STR1## and pharmaceutically acceptable salts thereof have a diuretic action, a renal-protecting action and a vasodilative action. The compounds are useful as a diuretic, a renal-protecting agent and an antihypertensive agent.