毒理性
识别和使用:全氟丁烷是一种无色气体。它被用作医学研究化学品,以及作为超声造影剂。人类暴露和毒性:71名接受前列腺活检的患者接受了全氟丁烷微泡(商品名:Sonazoid)的静脉注射。对比剂给药后的安全观察期为2天。不良事件的发生率为6.7%,不良反应的发生率为4%。动物研究:对小鼠单次静脉注射用于超声成像的气体载体对比剂,导致了盲肠和近端结肠(盲肠结肠区域)的炎症、坏死和溃疡,以及肝脏的局部坏死。在大鼠单次静脉注射气体载体对比剂后,也发现了类似的肠道损伤。在豚鼠或兔多次静脉注射Sonazoid后,未发现肠道或肝脏损伤。在狗身上,连续28天每天静脉注射后,发现了盲肠和/或结肠的最轻微到轻度粒细胞炎症,但在连续14天每天注射或单次注射后未发现。提出大鼠和小鼠在单次静脉注射气体载体对比剂后出现的肠道和肝脏损伤是由一个共同的机制引起的:在气体过饱和的组织中,气体载体剂的血管内生长,如大鼠和小鼠的盲肠壁中发生的情况。在这种特殊环境中,不断增长的气体泡会导致盲肠和结肠壁以及肝脏的缺血和坏死。
IDENTIFICATION AND USE: Perfluorobutane is a colorless gas. It is used as a medical research chemical, and as an ultrasound contrast agent. HUMAN EXPOSURE AND TOXICITY: Seventy-one patients undergoing prostate biopsy received intravenous injection of perfluorobutane microbubbles (Sonazoid). The safety observation period was 2 days after contrast administration. The incidence of adverse events was 6.7% and that of adverse reactions was 4%. ANIMAL STUDIES: Single intravenous administration of gas-carrier contrast agents used in ultrasound imaging to mice caused inflammation, necrosis, and ulceration of cecum and proximal colon (cecocolonic area) and focal necrosis in the liver. Similar intestinal lesions were also found in rats after treatment with a single iv administration of a gas-carrier contrast agent. No intestinal or hepatic lesions were found in guinea pigs or rabbits after repeated intravenous administrations of Sonazoid. In dogs, minimal to mild granulocytic inflammation of the cecum and/or colon was found after daily repeated intravenous injections for 28 days, but not after daily repeated administration for 14 days nor after a single administration. It is proposed that the intestinal and hepatic lesions in rats and mice after a single intravenous injection of gas-carrier contrast agents are caused by a common mechanism: intravascular growth of gas-carrier agents in tissues with gas supersaturation, as occurs in the cecal wall of rats and mice. In this particular environment the growing gas bubbles cause ischemia and necrosis in the cecal and colonic wall and liver.
来源:Hazardous Substances Data Bank (HSDB)