文献:The prevention effects of cryptotanshinone nanoemulsion on postoperative peritoneal adhesions
文献链接:https://pubmed.ncbi.nlm.nih.gov/30560692/
作者:Wang Chengxi, Guo Rishuo, Gu QuLiang, Wang Laiyou, Hou Lianbing & Qin Linghao
相关产品:Sodium oleate 油酸钠
原文摘要:The purpose of this study was to prepare a novel cryptotanshinone loaded nanoemulsion (Cry LN) and to evaluate its prevention effect on the postoperative peritoneal adhesions (PPA). The Cry LN was prepared by high pressure homogenization method, and various methods were used to investigate the physicochemical properties. The results showed that Cry LN has nanoscale particle size with uniform distribution and could slowly release the incorporated drug compared with Cry solution. With superior safety, Cry LN could increase the ratio of tissue plasminogen activator (tPA)/plasminogen activator inhibitor-1 (PAI-1) up to 673% compared with control group. Furthermore, in vivo animal study confirmed the Cry LN activated the fibrinolytic system and successfully prevented PPA formation in rat. In conclusion, Cry nanoemulsion could be considered as a potentially promising and effective strategy for PPA treatment.
油酸钠Sodium oleate是一种有机化合物,通常用于表面活性剂、乳化剂、分散剂等领域。Sodium oleate的制备可能涉及到钠的反应或工艺过程,但具体细节可能因制备方法和原料的不同而有所差异。制备一种新型隐丹参酮负载纳米乳液(Cry LN),并评价其对术后腹膜粘连(PPA)的预防作用。采用高压均质法制备了Cry LN,并采用各种方法研究了其理化性质。
图为:Cry的化学结构
Sodium在Cry LN的制备中的应用:
采用高压均质法制备LN。首先,磷脂酰胆碱、甘油、波洛沙默、Tween 80,将油酸钠加入双蒸馏水中混合.其次,将Cry加入混合油相加热.然后,将油相缓慢地滴入水溶液中。剧烈搅拌获得Cry LN粗乳液,将溶液转移到容量瓶中,用双蒸馏水稀释至体积。在高压均质器给予的压力下获得最终的CryLN8次,然后在氮气保护下密封Cry LN下灭菌。
Cry LN可防止术后在体内的粘连:
雄性SD大鼠分为高组、中剂量、低剂量组、载体 LN组和对照组。在静脉注射戊巴比妥钠溶液麻醉后,打开大鼠的腹部。然后,在大鼠腹膜侧壁上设置缺血按钮。术后,每组大鼠随机分为各组,分别用尾注射给药。一段时间后处死动物,评估每只大鼠腹部的粘附水平,并由不分组的研究者确定评分。
图为:小鼠静脉注射Cry LN、载体LN后的体重变化。
结论:制备一种新型cry纳米乳,并在体内外进行了评价。ClyLN分散系统保持稳定,并具有缓释行为。LN在动物体内是相当安全的。Cry LN增加了纤溶系统的活性,并成功地阻止了PPA的形成。Cry LN的影响改变了损伤区tPA和PAI之间的平衡,使PPA以剂量依赖性恢复。