pH滴定法测定羟乙膦酸钠的含量

本文采用ｐＨ滴定法,以ｐＨ５．０为起始ｐＨ,ｐＨ８．２为终点指示ｐＨ,用ＮａＯＨ直接滴定,测定了羟乙膦酸钠的含量。该方法简便、准确快速,平均回收率为１００．７２％,ＲＳＤ为０．２２％（ｎ＝６）。     

Protective effects of Terminalia arjuna against Doxorubicin-induced cardiotoxicity

Terminalia arjuna has been marked as a potential cardioprotective agent since vedic period. The present study was aimed to investigate the effects of butanolic fraction of Terminalia arjuna bark (TA-05) on Doxorubicin (Dox)-induced cardiotoxicity. Male wistar rats were used as in vivo model for the study. TA-05 was administered orally to Wistar rats at different doses (0.42 mg/kg, 0.85 mg/kg, 1.7 mg/kg, 3.4 mg/kg and 6.8 mg/kg) for 6 days/week for 4 weeks. Thereafter, all the animals except saline and TA-05-treated controls were administered 20 mg/kg Dox intraperitonially. There was a significant decrease in myocardial superoxide dismutase (38.94%) and reduced glutathione (23.84%) in animals treated with Dox. Concurrently marked increase in serum creatine kinase-MB (CKMB) activity (48.11%) as well as increase in extent of lipid peroxidation (2.55-fold) was reported. Co-treatment of TA-05 and Dox resulted in an increase in the cardiac antioxidant enzymes, decrease in serum CKMB levels and reduction in lipid peroxidation as compared to Dox-treated animals. Electron microscopic studies in Dox-treated animals revealed mitochondrial swelling, Z-band disarray, focal dilatation of smooth endoplasmic reticulum (SER) and lipid inclusions, whereas the concurrent administration of TA-05 led to a lesser degree of Dox-induced histological alterations. These findings suggest that butanolic fraction of Terminalia arjuna bark has protective effects against Dox-induced cardiotoxicity and may have potential as a cardioprotective agent.     

双膦酸盐类药物治疗多发性骨髓瘤骨病的评价

目的:评价双膦酸盐类药物在多发性骨髓瘤骨病治疗中的研究进展和临床应用情况.方法:查阅近期国内外相关文献,进行评价和分析.结果:在多发性骨髓瘤治疗中,双膦酸盐类药物在预防病理性脊柱骨折、高钙血症和缓解骨痛方面疗效显著,在预防非脊柱骨折、高钙血症和总生存率等方面无显著差异,不良反应轻微,常为恶心、呕吐、腹泻和便秘.结论:随着双膦酸盐类药物的开发进展,其药物强度越来越高,疗效更持久,不良反应更低,给多发性骨髓瘤骨病的治疗带来新的希望.     

帕米磷酸二钠治疗多发性骨髓瘤的溶骨性病变的临床观察

目的 :探讨帕米磷酸二钠治疗多发性骨髓瘤的溶骨性病变的疗效。方法 :在 35例患者中以帕米磷酸二钠和密钙息为对照药进行对比研究。结果 :帕米磷酸二钠对多发性骨髓瘤的溶骨性病变的有效率高于密钙息 (P <0 0 1)。结论 :帕米磷酸二钠对肿瘤溶骨性病变及其他并发症有良好疗效     

培美曲塞与DP方案在非小细胞肺癌二线治疗中临床疗效观察

目的 比较DP 方案与培美曲塞在晚期非小细胞肺癌(NSCLC) 治疗中的近期疗效和毒副反应.方法 NSCLC 患者27例.分别接受DP方案和培美曲塞两种方案的治疗,其中培美曲塞组13例,DP组14例,治疗2个周期后分别评价疗效和毒副反应.结果 有效率培美曲塞组为23.1%,DP组为28.6%,差异无统计学意义(P>0....     

培美曲塞或吉西他滨联合顺铂治疗晚期非小细胞肺癌的比较研究

目的比较培美曲塞或吉西他滨联合顺铂治疗晚期非小细胞肺癌(NSCLC)的疗效及不良反应。方法选择晚期NSCLC患者50例,随机分为培美曲塞加顺铂组(PC组)和吉西他滨加顺铂组(GC组)各25例。PC组给予培美曲塞500mg/m2,第1天,GC组吉西他滨1000mg/m2,第1、8天,两组均给予顺铂30mg,第2～4天,均为21d一个周期。结果培美曲塞加顺铂组和吉西他滨加顺铂组有效率分别为48%和44%,两组之间有效率无统计学意义(P>0.05)。PC组粒细胞减少的发生率小于GC组。结论 PC方案治疗晚期非小细胞肺癌的疗效与GC方案的疗效相当,但毒副作用明显减少,可以作为一线治疗方案。     

4-(4-甲氧基苄基氧基)苯丙二酸-4-甲氧基苄基单酯的工艺改进

目的 4-(4-甲氧基苄基氧基)苯丙二酸-4-甲氧基苄基单酯的合成工艺改进。方法 以对甲氧基苄醇与盐酸反应后生成的对甲氧基苄氯和对羟基苯乙酸为原料,经过酯化和醚化反应及羧基的α位发生羧基化反应得到4-(4-甲氧基苄基氧基)苯丙二酸-4-甲氧基苄基单酯。结果 目标产物的结构经过熔点,1H-NMR确认。结论 与原工艺相比,改进后的工艺减少了碘化钠的用量,提高了溶剂利用率,收率高,成本低,操作简单。     

因卡膦酸二钠治疗恶性肿瘤骨转移性疼痛的临床观察

目的:评价因卡膦酸二钠治疗恶性肿瘤骨转移性疼痛的有效性和安全性。方法:应用因卡膦酸二钠治疗恶性肿瘤骨转移患者28例,并与帕米膦酸二钠治疗组30例进行对照研究,观察2组止痛疗效、生活质量改善程度及不良反应。结果:因卡膦酸二钠治疗组止痛有效率为75.0%,生活质量改善有效率为53.6%,均优于帕米膦酸二钠组,不良反应少于帕米膦酸二钠组。结论:因卡膦酸二钠高效缓解恶性肿瘤骨转移所致的骨痛,并且应用安全,耐受性良好,值得临床推广使用。     

注射用帕米膦酸二钠致肌肉疼痛

1例75岁男性患者,因治疗前列腺癌骨转移,静脉滴注帕米膦酸二钠60mg+0.9%氯化钠注射液500mL。14d后出现左上臂肌肉疼痛,逐渐发展至右上臂、胸部肌肉疼痛,同时两手手指发僵。考虑帕米膦酸二钠致肌肉疼痛,遂给予口服萘汀美酮每次0.5g,每日2次,持续10d,肌肉疼痛症状缓解并逐渐消失。