HPLC法测定右旋兰索拉唑控释胶囊中左旋异构体含量

目的：建立HPLC法对右旋兰索拉唑控释胶囊中左旋和右旋异构体进行拆分并测定其中左旋异构体含量。方法：采用Chiral-AGP手性柱（4.6 mm×150 mm,5μm）;流动相为乙腈-pH 6.0磷酸盐缓冲液（10∶90）;流速0.5 mL·min-1;柱温30℃;检测波长285 nm;进样量20μL。结果：兰索拉唑左旋和右旋异构体之间的分离度为3.0,左旋异构体的线性范围为0.51~5.10μg·mL-1（r=0.9996）,检测限为2.52 ng,平均回收率（n=9）为98.4%。结论：该方法操作简便,结果准确,可用于右旋兰索拉唑控释胶囊中左旋异构体的含量测定。     

Experimental Investigation of the Performance of a Hybrid Self-Healing System in Porous Asphalt under Fatigue Loadings

Self-healing asphalt, which is designed to achieve autonomic damage repair in asphalt pavement, offers a great life-extension prospect and therefore not only reduces pavement maintenance costs but also saves energy and reduces CO₂ emissions. The combined asphalt self-healing system, incorporating both encapsulated rejuvenator and induction heating, can heal cracks with melted binder and aged binder rejuvenation, and the synergistic effect of the two technologies shows significant advantages in healing efficiency over the single self-healing method. This study explores the fatigue life extension prospect of the combined healing system in porous asphalt. To this aim, porous asphalt (PA) test specimens with various healing systems were prepared, including: (i) the capsule healing system, (ii) the induction healing system, (iii) the combined healing system and (iv) a reference system (without extrinsic healing). The fatigue properties of the PA samples were characterized by an indirect tensile fatigue test and a four-point bending fatigue test. Additionally, a 24-h rest period was designed to activate the built-in self-healing system(s) in the PA. Finally, a damaging and healing programme was employed to evaluate the fatigue damage healing efficiency of these systems. The results indicate that all these self-healing systems can extend the fatigue life of porous asphalt, while in the combined healing system, the gradual healing effect of the released rejuvenator from the capsules may contribute to a better induction healing effect in the damaging and healing cycles.     

Bacteriophage Encapsulation in pH-Responsive Core-Shell Capsules as an Animal Feed Additive

Increasing antibiotic resistance in bacteria that cause zoonotic infections is a major problem for farmers rearing animals for food as well as for consumers who eat the contaminated meat resulting in food-borne infections. Bacteriophages incorporated in animal feed may help reduce carriage and infections in animals including chickens and pigs. There are, however, unmet challenges in protecting phages from processing stresses e.g., during animal feed pelleting operations and during transit of phages through the acidic gastric environment. Core-shell capsules were produced using a concentric nozzle and commercially available encapsulation equipment to fabricate capsules with phages formulated in an oil-in-water microemulsion in the core. pH-responsive capsules released the encapsulated phage cargo within 10–30 min triggered by changes in local environmental pH typically found in the lower gastrointestinal (GI) tract of animals. Acid stability of phages exposed to pH values as low as pH 1 was demonstrated. Encapsulated phages were able to withstand exposure to 95 °C wet heat thermal stress for up to 120 s, conditions typically encountered during feed pellet extrusion processing. Free phages were inactivated within 15 s under these conditions. The present study demonstrates that encapsulation of bacteriophages in core-shell pH-responsive capsules with water-in-oil emulsified phages in the core significantly improves phage viability upon exposure to processing and environmental stresses that require consideration during production of animal feed and application in animals for biocontrol. The results from this study should help guide future development of phage formulations suitable for use in animal feed for animal biocontrol applications.     

红外分光光度法鉴别阿莫西林胶囊

【】 目的：建立阿莫西林胶囊的红外光谱鉴定法。方法：取胶囊内容物,以高纯度溴化钾压片,直接测定红外吸收光谱。结果：阿莫西林胶囊与阿莫西林对照品的红外光谱完全一致,并与《药品红外光谱集》中阿莫西林的标准光谱一致。结论：本方法专属性好,能快速、准确,可用于阿莫西林胶囊中阿莫西林成分的鉴别。     

阿仑膦酸钠与阿法骨化醇治疗老年性骨质疏松症的疗效比较

目的比较阿仑膦酸钠片、阿法骨化醇胶囊治疗老年性骨质疏松症的临床疗效及安全性。方法将56例老年性骨质疏松症患者,采取随机法分成2组。观察组给予口服阿仑膦酸钠片70 mg,每周1次;对照组给予口服阿法骨化醇胶囊0.5μg,每日1次;同时2组患者每天均服用钙剂600 mg,连续治疗6个月。测定治疗前后骨密度(BMD)、生化指标,采取VAS法评价治疗前后疼痛改善情况等。结果治疗后观察组的L2、L3、L4、股骨颈的骨密度值分别增加了3.61%、4.76%、3.66%和5.06%;观察组的骨密度值分别增加了3.57%、4.71%、3.61%和5.0%,2组间差异无统计学意义(p>0.05)。治疗后观察组改善疼痛症状优于对照组(p<0.05)。结论两种药物治疗老年性骨质疏松症具有良好的临床疗效,能显著增加患者骨密度,缓解疼痛程度;但阿仑膦酸钠片服药方便,患者顺从性较好,较适宜在临床推广应用。     

复方甘草酸苷胶囊联合红光治疗面部糖皮质激素依赖性皮炎疗效观察

目的:观察复方甘草酸苷胶囊联合红光治疗糖皮质激素依赖性皮炎的疗效。方法:66例患者,随机分为两组:治疗组43例,口服复方甘草酸苷胶囊20mg,每日3次,联合红光面部照射,使用波长(633±3)nm,能量密度128 J/cm2,每次照射20min,每周治疗2次;对照组23倒,口服咪唑斯汀缓释片10mg,每日1次。所有患者外涂硅油霜,两组疗程均为8周。结果:治疗组有效率为90%,对照组为65%,两组比较差异具有显著性(P0.05)。结论:复方甘草酸苷胶囊联合红光治疗面部糖皮质激素依赖性皮炎疗效好,无不良反应。     

白芍总苷胶囊联合左西替利嗪口服液治疗儿童慢性特发性荨麻疹的疗效及其对炎性因子及T淋巴细胞亚群的影响

[摘要]目的：探讨白芍总苷胶囊联合左西替利嗪口服液对慢性特发性荨麻疹（CIU）患儿炎性因子及T淋巴细胞亚群的影响。方法：选取2013年1月至2018年1月仙桃市第一人民医院收治的CIU患儿149例,依据随机数字法分为对照组75例和观察组74例。对照组患儿给予左西替利嗪口服液治疗,观察组在对照组的基础上给予白芍总苷胶囊治疗,两组疗程均为1个月。观察比较两组患儿临床疗效、炎性因子、T淋巴细胞亚群及不良反应发生情况。结果：观察组总有效率为98.65%,高于对照组的89.33%（P<0.05）。两组患儿治疗后的白细胞介素-4（IL-4）、白细胞介素-17（IL-17）及肿瘤坏死因子-α（TNF-α）水平均低于治疗前（P<0.05）,且观察组低于对照组（P<0.05）。两组患儿治疗后的CD3+、CD4+及CD4+/CD8+均高于治疗前,CD8+低于治疗前（P<0.05）。观察组治疗后的CD3+、CD4+及CD4+/CD8+高于对照组,CD8+低于对照组（P<0.05）。观察组不良反应的总发生率为14.86%,与对照组的10.67%比较差异无统计学意义（P>0.05）。结论：白芍总苷胶囊联合左西替利嗪口服液治疗CIU患儿的疗效较好,用药安全性较高,可能与改善患儿机体的炎性因子及T淋巴细胞亚群状态有关。     

强骨胶囊联合鲑鱼降钙素针剂辅助治疗老年骨质疏松性压缩骨折临床观察

目的探讨强骨胶囊联合鲑鱼降钙素针剂辅助治疗老年骨质疏松性压缩骨折临床疗效及影响。方法 257例胸腰椎骨质疏松性骨折患者随机分为3组,观察组口服强骨胶囊同时肌肉注射鲑鱼降钙素注射液,对照I组口服强骨胶囊,对照Ⅱ组肌肉注射鲑鱼降钙素针剂。观察临床疗效,测定治疗前和治疗后骨密度(BMD),血骨钙素(BGP)、血钙、血磷浓度及碱性磷酸酶。尿液中尿钙,尿羟脯氨酸,尿肌酐的含量,并计算尿钙/尿肌酐与羟脯氨酸/尿肌酐比值。结果观察组总有效率明显优于对照I组和对照II组(P0.05)。治疗后,3组BMD明显升高,痛觉评分均明显降低(P0.01),尤其观察组更加明显(P0.05)。治疗后,3组骨钙素较治疗前有明显的升高(P0.05或0.01),碱性磷酸酶和羟脯氨酸/尿肌酐较治疗前有明显的下降(P0.05或0.01),尤其治疗组明显优于对照I组和对照II组。治疗后对照组I组和观察组血钙较治疗前有明显的下降(P0.05),但3组组间无差异性(P0.05)。治疗后,3组血磷和尿钙/尿肌酐较治疗前变化不明显,组间比较无差异性(P0.05)。结论骨胶囊和鲑鱼降钙素治疗老年骨质疏松性骨折疗效肯定,能缓解疼痛,促进愈合和降低骨折的再发生,无明显不良反应。     

金天格胶囊对绝经后膝骨关节炎OPN和MMP3表达的影响

目的：探讨金天格胶囊对绝经后膝骨关节炎患者血清中骨桥蛋白（OPN）和基质金属蛋白酶3（MMP－3）表达的影响。方法2013年1月－12月将180例绝经后膝骨关节炎妇女随机分为金天格胶囊组（ A组）、盐酸氨基葡萄糖胶囊组（ B组）、仙灵骨葆胶囊组（C组）,每组60例,采用酶联免疫吸附试验测定各组血清MMP－3、OPN、雌二醇（E2）、Ⅰ型胶原C端肽（CTX）和Ⅰ型胶原N端前肽（PINP）水平。结果 A组和B组在治疗后4周和6周JOA和VAS评分明显优于C组（P＜0．05）,B组在治疗后4周的MMP－3表达改善明显（P＜0．05）,优于其他两组。治疗后6周,A组OPN和MMP－3表达水平改善明显（P＜0．05）,优于其他两组。同时,A组和C组CTX和PINP水平明显改善（P＜0．05）,优于B组。结论金天格胶囊能有效改善绝经后骨性关节炎的症状,可能通过调节OPN和MMP3的复合体表达,改善关节软骨的功能实现这一目的。     

植物空心胶囊的研究进展

目前我国药用空心胶囊中绝大数为动物明胶空心硬胶囊。由于明胶的原料来源复杂、质量难控,这决定其存在诸多难以克服的性能及安全方面的缺陷。全球动物疫情频繁爆发、胶囊铬超标事件,使明胶空心胶囊面对前所未有的信任危机。因此,寻求质量更为可控的胶囊显得很有必要性,笔者综述了植物空心胶囊研究进展以期提供有益参考。