HPLC法测定氧氟沙星栓剂的含量

目的 建立高效液相色谱法测定氧氟沙星栓剂的氧氟沙星含量。方法 用Hypersil ODS色谱柱，以0．05mol／L枸橼酸溶液(三乙胺调节pH值至4．0)—乙腈(85：15)为流动相，检测波长293nm。结果氧氟沙星在进样量0．8～1．2μg范围内与主峰面积线性关系良好(r=0．9999)，平均回收率100．0％，重复进样RSD0．46％(n=8)，中间精密度RSD0．61％。结论 用本法测定氧氟沙星栓剂的含量，方法专属，可排除有关物质和辅料的影响，测定结果准确。     

紫外分光光度法测定氧氟沙星胶囊的含量

本文报道了以0.1mol／L盐酸溶液为溶剂，采用紫外分光光度法测定氧氟沙星胶囊的含量的方法，其平均回收率99.51％，RSD=0．60％，n=9；样品含量测定的平均RSD为0．90％，n=6。     

紫外分光光度法测定氧氟沙星滴耳液中氧氟沙星的含量

目的：探讨氧氟沙星滴耳液的含量测定方法。方法：采用紫外分光光度法。在293．6nm波长处测定氧氟沙星的含量。结果：氧氟沙星在2．5～15μg／d浓度范围内呈良好的线性关系（γ=0．9998），平均同收率为99．96％，RSD为0．522％（n=5）。结论：该制剂含量测定方法快速、简便，结果准确、可靠。适合基层医院制剂的质量控制。     

旋光法测定盐酸左氧氟沙星片的含量

目的：对盐酸左氧氟沙星片剂的含量测定方法进行研究。方法：用旋光法测定盐酸左氧氟沙星片剂的含量，并将测定结果与紫外分光光度法比较。结果：在2．5—15mg／mL范围内，旋光度与浓度呈线性关系，r=0．99996。方法平均回收率为99．89％，RSD=0．92％(n=5)，与分光光度法相符。结论：本法简便快速准确，适于医院制剂的快速检验。     

高效液相色谱法测定盐酸左氧氟沙星胶囊中左氧氟沙星含量

目的建立测定盐酸左氧氟沙星胶囊中左氧氟沙星含量的高效液相色谱（HPLC）法。方法色谱柱为Phenomenex Luna C18柱（250mm×4．6mm,5μm）,流动相为0．05mol／L枸橼酸溶液-1mol／L醋酸铵溶液-乙腈（77：1：14）,流速为1．0mL／min,检测波长为293／lm,进样量10μL,柱温为30℃。结果左氧氟沙星检测质量浓度的线性范围为10．44～104．4μg／mL（r=0．9999）,平均回收率为99．50％,RSD=0．45％（n=6）。结论该方法快速、准确、重现性好,可用于该制剂的含量测定。     

复方氧氟沙星乳剂主药的含量测定

目的：测定复方氧氟沙星乳剂中氧氟沙星和甲硝唑的含量，方法：分别采用双波长-等吸收波长法和双波长-系数倍率法测定复方氧氟沙星乳剂中氧氟沙星和甲硝唑的含量。结果：在浓度2．0-5．2μg／mL范围内，氧氟沙星和甲硝唑的浓度与吸收度线性关系均起好（r=0．9999）；平均回收率氧氟沙星为101．5％（RSD=1．34％），甲硝唑为99．4％（RSD=0．65％）。结论：两法简便、准确、可靠。适用于复方氧氟沙星乳剂中氧氟沙星和甲硝唑的质量控制。     

一阶导数光谱法测定复方氧氟沙星栓剂中氧氟沙星和甲硝唑的含量

目的：测定复方氧氟沙星栓剂中氧氟沙星和甲硝唑的含量。方法：采用一阶导数光谱法,选择273．5nm为氧氟沙星的测定波长,260．5nm为甲硝唑的测定波长,结果：一阶导数光谱法测定复方氧氟沙星栓剂中氧氟沙星和甲硝唑的含量,线性关系良好,同时可排除栓剂中基质的干扰,测得氧氟沙星平均回收率为99．952％,RSD＝1．283％,r=0.9995(n=5),甲硝唑平均回收率为100．002％,RSD＝0．941％,r=0.9999(n=5),结论：一阶导数光谱法简便,快速,准确。     

左氧氟沙星凝胶的制备及质量控制

目的 建立制备左氧氟沙星凝胶剂及质量控制的方法。方法 用聚乙烯醇124作凝胶基质，制备左氧氟沙星凝胶；采用紫外分光光度法进行含量测定，测定波长为293nm；一元线性回归分析．线性范围为2.0～12．0mg／L，r=0．9999．结果 含量测定平均回收率为99．8％．RSD=0．15％(n=5)。结论 制备该凝胶工艺简单，质量稳定，测定方法可靠，应用无刺激，可供临床应用。     

紫外分光光度法测定洁阴灵中醋酸氯已定和氧氟沙星含量

目的：建立洁阴灵中醋酸氯已定和氧氟沙星含量检测方法。方法：采用双波长分光光度法,在波长255,269．4nm处,测定醋酸氯已定含量,在波长326nm处,测定氧氟沙星含量,结果：醋酸氯已定平均回收率为99．6％,RSD为0．8％（n=9),氧氟沙星平均回收率为99．85,RSD为0．3％,（n=9),结论：该方法简便、准确、可用于洁阴灵中醋酸氯已定和氧氟沙星含量测定。     

紫外分光光度法测定氧氟沙星片的含量

目的：建立氧氟沙星片的含量测定方法。方法：采用紫外分光光度法，用0．4％氢氧化钠溶液作溶剂，测定波长为288nm。结果：平均回收率为100．3％，RSD为0．40％。结论：方法简便，结果准确。     

HPLC测定氧氟沙星胶囊中氧氟沙星的含量

目的建立高效液相色谱法测定氧氟沙星胶囊中氧氟沙星的含量。方法用D ikm a-C18色谱柱,以0.05 mol/L枸橼酸-乙腈(79∶21)用三乙胺调节pH值至4.0为流动相,检测波长293 nm。结果线性范围:20~40μg/m l;r=0.9993。加样回收率为99.8%,RSD=0.65%。结论本法测定氧氟沙星胶囊的含量,方法专属性强,简便,可靠,测定结果准确。     

HPLC测定氧氟沙星胶囊中氧氟沙星的含量

目的建立高效液相色谱法测定氧氟沙星胶囊中氧氟沙星的含量.方法用Dikma-C18色谱柱,以0.05 mol/L枸橼酸-乙腈(79:21)用三乙胺调节pH值至4.0为流动相,检测波长293 nm.结果线性范围:20～40μg/ml;r=0.9993.加样回收率为99.8%,RSD=0.65%.结论本法测定氧氟沙星胶囊的含量,方法专属性强,简便,可靠,测定结果准确.     

HPLC法测定氧氟沙星滴耳液中氧氟沙星的含量

目的建立测定氧氟沙星滴耳液中氧氟沙星含量的HPLC方法。方法采用Dikma Diamonsil C18柱(4.6 mm×150 mm,5μm),乙腈-0.1%三乙胺溶液(14∶86,H3PO4调节pH值至3.0)为流动相,柱温35℃,流速1.0 mL/min,Waters 996 PDA检测器,检测波长294 nm。结果进样量在0.153 9～3.078 0μg范围内线性关系良好,r=0.999 9(n=6),平均回收率99.84%,RSD=0.56%。结论该方法准确、简便、重现性好,可用于氧氟沙星滴耳液的含量测定。     

Multiple dose kinetics of ofloxacin and ofloxacin metabolites in haemodialysis patients

Summary 7 patients with end-stage renal disease on regular haemodialysis were treated orally with a loading dose of 200 mg ofloxacin and multiple maintenance doses of 100 mg per 24 h for 10 days. The pharmacokinetics of ofloxacin and its metabolites were studied at the end of the treatment period. Plasma and dialysate concentrations of ofloxacin and ofloxacin metabolites were measured by HPLC.Peak (3.1 mg·1^–1) and trough levels (1.6 mg·1^–1) and the AUC of ofloxacin were comparable to the values in healthy volunteers given 300 to 400 mg ofloxacin p.o. The mean half-life, determined in the dialysis-free interval (t_1/2) and during the haemodialysis session (t_1/2HD), was 38.5 h and 9.9 h, respectively. Extrarenal clearance (32.7 ml·min^–1) was unchanged as compared to that reported in healthy volunteers after a single dose of ofloxacin. The fractional removal by haemodialysis amounted to 21.5%. Two metabolites, ofloxacin-N-oxide and demethyl-ofloxacin, were detected in plasma. Despite prolonged t_1/2 of both metabolites (66.1 and 50.9 h) and multiple doses of ofloxacin the peak concentrations of the metabolites reached only 14% and 5% of that of the parent drug, respectively.It is concluded that in patients on regular haemodialysis treatment the dosage adjustment employed resulted in safe and therapeutically favourable plasma concentrations. The observed accumulation of ofloxacin metabolites does not appear to have any toxic or therapeutic significance.     

紫外分光光度法测定氧麻滴鼻液中氧氟沙星的含量

本文作者应用紫外分光光度法测定氧麻滴鼻液中氧氟沙星的含量。在1.5～21μg/ml的浓度范围,氧氟沙星的吸收度与浓度呈良好的线性关系;平均回收率为100.07％,RSD=0.16％(n=5),并具有灵敏、快速、特异、简便、重现性好、回收率高的特点。     

氧氟沙星致紫癜性肾炎

患者男,64岁.因内踝关节肿痛于1999年7月上旬来院骨科门诊就诊,诊断为骨膜炎.予以氧氟沙星注射液100ml(0.2g)静滴,qd.用药7天,肿痛消退,感觉良好,治疗终止.     

Reproductive toxicity of ofloxacin

The reproductive toxicity of (+/-)-9-fluoro-2, 3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de] [1,4]benzoxazine-6-carboxylic acid (ofloxacin, Tarivid), a new antibacterial agent, was investigated in rats and rabbits after oral administration. Neither the male or female fertility nor the reproductive performance of the rats was affected by doses of up to 360 mg/kg. Ofloxacin elicited no evidence of teratogenicity when administered orally during the period of organogenesis to pregnant rats at doses of up to 810 mg/kg, or to pregnant rabbits at doses of up to 160 mg/kg. However, the female rats receiving 810 mg/kg showed salivation, dirty hair coats, soft stools, and decreases of body weight and food intake. The fetuses in the higher dose groups exhibited decreased body weight and retardation of ossification, and those in the highest dose group showed increased mortality and skeletal variations (cervical ribs, shortened 13th ribs). Further investigation of the fetal skeleton revealed that the critical period of the occurrence of skeletal variations was on days 9 and 10 of gestation. The occurrence of cervical ribs and shortened 13th ribs was not an indicator of teratogenicity when ofloxacin was administered at doses of up to 1600 mg/kg during the critical period. Moreover, the shortening of the 13th ribs was the only type of retardation of ossification degree. Decreases of maternal body weight and food intake, and increased mortality of fetuses were observed in rabbits at a dose of 160 mg/kg. In a perinatal and postnatal toxicity study in rats using doses of up to 360 mg/kg, no adverse effects were observed.     

RP-HPLC法测定复方氧氟沙星鱼肝油乳剂中氧氟沙星和甲硝唑的含量

目的:建立反相高效液相色谱法测定复方氧氟沙星鱼肝油乳剂中甲硝唑和氧氟沙星的含量.方法:采用反相高效液相色谱法,色谱柱为Diamonsii C18柱(250mm×4.6mm,5μm), 流动相为甲醇-1%醋酸铵(40∶60),流速1.0mL·min-1, 检测波长293nm.结果:甲硝唑在3.0～30.0μg·mL-1范围内线性关系良好,回归方程:Y=0.123 30 1.833 75X,r=0.999 9(n=5),平均回收率100.33%,RSD=1.49%(n=9);氧氟沙星在2.0～20.0μg·mL-1范围内线性关系良好,回归方程:Y=0.157 53 0.623 53X,r=0.999 9(n=5),平均回收率100.31%,RSD=1.19%(n=9).结论:该方法灵敏度高;专属性好;操作简便;重现性好.     

氧氟沙星缓释微丸的研制

目的：制备氧氟沙星缓释微丸，开发氧氟沙星新剂型。方法：采用正交试验设计，以体外累积释药百分率为指标，筛选缓释微丸的最佳处方，并考察制剂的稳定性。结果：缓释微丸的释药动力学符合Higuchi方程，制剂的稳定性良好。结论：氧氟沙星缓释微丸制备工艺可靠，质量可控。     

氧氟沙星注射剂致全身抽搐

患者女,20岁。因患急性盆腔炎,来我院治疗。给予0.9%氯化钠注射液100ml 氧氟沙星粉针剂0.2g静滴。治疗20min后,患者出现头痛、头晕、眼花,继之出现右侧嘴角肌肉抽搐,四肢强直,肌张力增高。立即停止静滴氧氟沙星注射剂,给予盐酸肾上腺素1mg肌注。在抢救期间,患者全身抽搐同时,意识模糊、躁动不安,双瞳孔等大等圆,对光反射灵敏,查体:P100～110次/min,BP95/60mmHg(1mmHg=0.133kPa),R26次/min。给予吸氧,保持呼吸道通畅,建立新的静脉通道,地西泮10mg静脉推注,5%葡萄糖注射液500ml 地塞米松20mg静脉滴注。20min后,上述症状逐渐消失,1h后,患者…