[Objective] To extract the effective component rosmarinic acid from Folium perillae,study preparation technology and quality control of rosmarinic acid injection and provide test basis for hemorheological drug develop...[Objective] To extract the effective component rosmarinic acid from Folium perillae,study preparation technology and quality control of rosmarinic acid injection and provide test basis for hemorheological drug development and clinic application.[Method]The coarse powder of Folium perillae(40 μm)was lixiviated with hot water and acidized to make aqueous extracts.Rosmarinic acid from the aqueous mixture was extracted with Ethyl Acetate.And Et Ac was evaporated to obtain primary product.The injection was purified by pH adjustment.Concentration of rosmarinic acid in the injection was detected by high performance liquid chromatography(HPLC).Contents of tannin,resin and oxalate were eliminated according to the Chinese Pharmacopeia(2005 edition).Stability,irritation,haemolyticus,LD50 and thermogenic substance of this injection were also detected.[Result]The content of rosmarinic acid in Folium perillae injection is 2.81 mg/ml,and the content of LD50 was 406.82 mg/kg.This injection was consistent with the stipulation of Chinese Pharmacopeia(2005 edition).[Conclusion]The preparation technology of this experiment was reasonable.The stable qualities of the prepared injection meet the injection requirement.展开更多
背景:天然来源的多糖海藻酸钠具有含量高、成本低、生物相容性好、生物可降解性好等特点,在可注射型水凝胶的生产中得到了广泛应用,成为制备可注射水凝胶的理想原料之一。目的:就海藻酸钠的性质、可注射海藻酸钠水凝胶的制备及其在组织...背景:天然来源的多糖海藻酸钠具有含量高、成本低、生物相容性好、生物可降解性好等特点,在可注射型水凝胶的生产中得到了广泛应用,成为制备可注射水凝胶的理想原料之一。目的:就海藻酸钠的性质、可注射海藻酸钠水凝胶的制备及其在组织工程中的应用进展进行综述。方法:利用计算机检索Web of Science、PubMed、中国知网等数据库,中文检索词为“海藻酸钠;水凝胶;可注射”,英文检索词为“alginate;hydrogel;inject*”,检索文献时间范围为2017年6月至2022年6月。结果与结论:由于海藻酸钠来源广泛,分子链结构上存在着许多可改性基团,可用各种共价交联或非共价交联的方法合成多种性能优良的可注射型水凝胶;将其他具有生物功能的分子引入海藻酸钠水凝胶中,可以调节其功能、拓宽其应用范围。另外,由于生物相容性和生物可降解性等优良的物理化学特性,可注射型海藻酸钠水凝胶在生物医学方面有着广泛的发展潜力,海藻酸钠水凝胶在体外与各种药物、细胞、因子或其他生物作用分子均匀调配,在人体内可形成凝胶,在基因载体、细胞支架和创口修复中起着举足轻重的作用。展开更多
Injectable hydrogels have been considered as promising materials for bone regeneration,but their osteoinduction and mechanical performance are yet to be improved.In this study,a novel biocompatible injectable and self...Injectable hydrogels have been considered as promising materials for bone regeneration,but their osteoinduction and mechanical performance are yet to be improved.In this study,a novel biocompatible injectable and self-healing nano hybrid hydrogel was on-demand prepared via a fast(within 30 s)and easy gelation approach by reversible Schiff base formed between-CH=O of oxidized sodium alginate(OSA)and-NH2 of glycol chitosan(GCS)mixed with calcium phosphate nanoparticles(CaP NPs).Its raw materials can be ready in large quantities by a simple synthesis process.The mechanical strength,degradation and swelling behavior of the hydrogel can be readily controlled by simply controlling the molar ratio of-CH=O and-NH2.This hydrogel exhibits pH responsiveness,good degradability and biocompatibility.The hydrogel used as the matrix for mesenchymal stem cells can significantly induce the proliferation,differentiation and osteoinduction in vitro.These results showed this novel hydrogel is an ideal candidate for applications in bone tissue regeneration and drug delivery.展开更多
基金Supported by National Natural Science Foundation Project(10572029,10772054)Key Project of National Natural Science Foundation(10632010)~~
文摘[Objective] To extract the effective component rosmarinic acid from Folium perillae,study preparation technology and quality control of rosmarinic acid injection and provide test basis for hemorheological drug development and clinic application.[Method]The coarse powder of Folium perillae(40 μm)was lixiviated with hot water and acidized to make aqueous extracts.Rosmarinic acid from the aqueous mixture was extracted with Ethyl Acetate.And Et Ac was evaporated to obtain primary product.The injection was purified by pH adjustment.Concentration of rosmarinic acid in the injection was detected by high performance liquid chromatography(HPLC).Contents of tannin,resin and oxalate were eliminated according to the Chinese Pharmacopeia(2005 edition).Stability,irritation,haemolyticus,LD50 and thermogenic substance of this injection were also detected.[Result]The content of rosmarinic acid in Folium perillae injection is 2.81 mg/ml,and the content of LD50 was 406.82 mg/kg.This injection was consistent with the stipulation of Chinese Pharmacopeia(2005 edition).[Conclusion]The preparation technology of this experiment was reasonable.The stable qualities of the prepared injection meet the injection requirement.
文摘背景:天然来源的多糖海藻酸钠具有含量高、成本低、生物相容性好、生物可降解性好等特点,在可注射型水凝胶的生产中得到了广泛应用,成为制备可注射水凝胶的理想原料之一。目的:就海藻酸钠的性质、可注射海藻酸钠水凝胶的制备及其在组织工程中的应用进展进行综述。方法:利用计算机检索Web of Science、PubMed、中国知网等数据库,中文检索词为“海藻酸钠;水凝胶;可注射”,英文检索词为“alginate;hydrogel;inject*”,检索文献时间范围为2017年6月至2022年6月。结果与结论:由于海藻酸钠来源广泛,分子链结构上存在着许多可改性基团,可用各种共价交联或非共价交联的方法合成多种性能优良的可注射型水凝胶;将其他具有生物功能的分子引入海藻酸钠水凝胶中,可以调节其功能、拓宽其应用范围。另外,由于生物相容性和生物可降解性等优良的物理化学特性,可注射型海藻酸钠水凝胶在生物医学方面有着广泛的发展潜力,海藻酸钠水凝胶在体外与各种药物、细胞、因子或其他生物作用分子均匀调配,在人体内可形成凝胶,在基因载体、细胞支架和创口修复中起着举足轻重的作用。
基金supported by the National Key Research and Development Program of China(No.2017YFC1104102)National Natural Science Foundation of China(Nos.31370958,21875044)+1 种基金Key Program of Natural Science Foundation of Fujian Province(No.2018Y0056)the International Scientific Partnership Program ISPP at King Saud University for funding this research work through ISPP-17-94(2)。
文摘Injectable hydrogels have been considered as promising materials for bone regeneration,but their osteoinduction and mechanical performance are yet to be improved.In this study,a novel biocompatible injectable and self-healing nano hybrid hydrogel was on-demand prepared via a fast(within 30 s)and easy gelation approach by reversible Schiff base formed between-CH=O of oxidized sodium alginate(OSA)and-NH2 of glycol chitosan(GCS)mixed with calcium phosphate nanoparticles(CaP NPs).Its raw materials can be ready in large quantities by a simple synthesis process.The mechanical strength,degradation and swelling behavior of the hydrogel can be readily controlled by simply controlling the molar ratio of-CH=O and-NH2.This hydrogel exhibits pH responsiveness,good degradability and biocompatibility.The hydrogel used as the matrix for mesenchymal stem cells can significantly induce the proliferation,differentiation and osteoinduction in vitro.These results showed this novel hydrogel is an ideal candidate for applications in bone tissue regeneration and drug delivery.
