Fatty acid balance studies in term infants fed formula milk containing long-chain polyunsaturated fatty acids

Long-chain polyunsaturated fatty acids (LCP) are thought to be required for optimal nervous system development in the newborn. A commercial milk formula containing LCP (Aptamil-LCP) with a fatty acid profile closely resembling breast milk, has recently been introduced for term infants. The absorption of fatty acids in term infants was examined in a double-blind randomized controlled trial comparing Aptamil-LCP ( n = 20) and standard Aptamil ( n = 20). Formula-fed newborn infants were studied from birth for 14 d. Fat balances (3 d) were performed from d 10. A 3-d stool collection was performed from d 10 in a parallel breastfed group ( n = 21). Plasma samples were taken on d 6. Median fat excretion (mg kg⁻¹) was 897.1, 615.0 and 355.2 with Aptamil, Aptamil-LCP and breastfeeding, respectively. The median total fat absorption coefficient in Aptamil-LCP-fed infants was higher than in those fed standard Aptamil ( p < 0:01). These findings were accounted for by differences in the excretion and absorption of long-chain saturated fatty acids (C14:0, C16:0 and C18:0). Higher fat excretion was associated with bulkier and firmer stools. Only trace amounts of LCP were detected in the stools of all groups. This accounted for less than 4% of dietary intake in Aptamil-LCP-fed infants. No differences in the utilization of LCP from Aptamil-LCP and breast milk feeding were apparent. Plasma phospholipid fatty acid composition data reflected differences in dietary LCP intake. Thus, PL LCP levels were highest in the breastfed infants and lowest in the Aptamil-fed infants, with values for the Aptamil-LCP-fed group falling in between.     

鹿角方对实验性心力衰竭兔血流动力学的影响

采用腹主动脉半结扎术复制家兔慢性心衰模型，发现术后１２ｄ其心脏重量指数增加，心脏舒张、收缩功能降低，与假手术组和正常对照组相比，差异显著。给心衰兔喂服鹿角方，可显著改善其心脏收缩功能，但对舒张功能无明显作用     

精制芎归缓释滴丸的制备

目的:筛选水溶性和水不溶性载体的种类、配比,研究缓释滴丸剂的成型处方。方法:以圆整度、硬度、料液的黏度、流动性、易滴制程度、累计释放百分数等为考察指标,采用正交设计试验对精制芎归缓释滴丸的成型处方进行优选。结果与结论:按照选定的处方既能有一定的速释量,还能保证10h持续释药80%以上,达到了释药设计目的。     

二阶导数分光光度法测定乳酸环丙沙星乳膏含量

目的建立乳酸环丙沙星含量测定的分析方法.方法采用二阶导数分光光度法,以282.5 nm为检测波长测定乳酸环丙沙星乳膏含量.结果在5～40 mg·L-1的范围内吸收度与浓度呈良好的线性关系(r=0.999 8),平均回收率为101.1%.结论用二阶导数分光光度法可排除基质干扰,准确测定乳酸环丙沙星乳膏的含量.     

甲硝唑乳膏的制备及质量控制

目的:制备甲硝唑乳膏并建立其质量控制标准。方法:以甲硝唑为主药制备甲硝唑乳膏,采用紫外分光光度法测定甲硝唑乳膏中甲硝唑的含量。结果:甲硝唑的平均回收率为100.2％,RSD为1.7％。结论:该制剂处方及工艺具有生产可行性,其质量控制标准符合《中国药典》要求,含量测定方法简单、快速、准确。     

补肾活血方治疗多囊卵巢综合征105例

采用补肾活血方治疗多囊卵巢综合征105例,痊愈72例,有效23例,无效10例,妊娠52例,总有效率90．48％。     

补肾益气方对流产大鼠胎盘孕酮生成通路的影响

目的:探讨补肾益气方对流产大鼠胎盘孕酮生成通路中相关重要上游因素低密度脂蛋白受体(LDLR)、细胞色素P450链裂解酶(P450scc)、3β-羟基类固醇脱氢酶(3β-HSD)的影响及其与孕酮(P)分泌的关系。方法:溴隐亭皮内注射法建立流产大鼠模型,分别于孕1-8 d、1-11 d灌服补肾益气方药,黄体酮肌注作为阳性对照组,采用放免法测定大鼠血清P水平;RT-PCR技术检测LDLR、P450scc、3β-HSD在不同组动物胎盘中的mRNA表达。结果:模型组LDLR、P450scc、3β-HSD mRNA表达较正常对照组明显降低;中药组及黄体酮组不同程度提高模型大鼠胎盘LDLR、P450scc、3β-HSD mRNA表达,表达强度随孕天和给药时间逐渐升高,与血P有显著相关性。结论:补肾益气方清热益气、固肾安胎,能调控胎盘滋养细胞LDLR、P450scc、3β-HSD基因表达,促进孕激素合成分泌增加,从而达到保胎维持妊娠的目的。     

反相高效液相色谱法测定复方二氧化钛乳膏中水杨酸苄酯的浓度

目的:建立复方二氧化钛乳膏中水杨酸苄酯的含量测定方法.方法:采用反相高效液相色谱法(RP-HPLC).色谱柱Hypersil ODS C18(5 μm,4.6 mm×250 mm);流动相为甲醇-水(79∶21);紫外检测波长308 nm;流速1 mL*min-1.结果:水杨酸苄酯在5～30 mg·L-1的浓度范围内线性良好(r=0.9999),平均回收率为100.6%,RSD为1.17%(n=5);日内平均RSD为1.27%(n=5),日间平均RSD为1.57%(n=5).结论:该方法简便、快速、准确,可作为该制剂的质控方法.     

4%与1%吲哚美辛乳膏的镇痛抗炎作用比较

目的:观察4%与1%吲哚美辛乳膏的镇痛抗炎作用.方法:以1%吲哚美辛乳膏为对比,对几种炎症、疼痛模型考察4%吲哚美辛乳膏的治疗作用.结果:4%吲哚美辛乳膏对甲醛致小鼠足部疼痛、热板法致小鼠足部疼痛、大鼠尾部压痛均有明显镇痛效果,对卡拉胶致大鼠足肿胀和二甲致小鼠耳肿胀有明显抗炎效果.结论:4%吲哚美辛乳膏具有明显的镇痛抗炎药效,优于1%吲哚美辛乳膏.     

磺胺噻唑鱼肝油乳剂的制备及质量控制

目的:介绍磺胺噻唑鱼肝油乳剂制备方法及质量控制.方法:采用三波长分光光度法.结果:经过系列波长筛选,最后确定该制剂的测定组合波长为297,290,263 nm.结论:磺胺噻唑鱼肝油乳剂稳定、制备简便,质量控制方法准确.