紫外分光光度法测定醋酸氟轻松搽剂中醋酸氟轻松的含量

目的：建立醋酸氟轻松搽剂中醋酸氟轻松含量的测定方法。方法：采用紫外分光光度法测定醋酸氟轻松搽剂中醋酸氟轻松的含量。结果：采用紫外分光光度法以238．4nm为检测波长，其回归方程为A=0．0326C 0．0002，r=0．9998。平均回收率=99．17％；RSD=2．55％。同时采用对照品比值法进行回收试验，其平均回收率=100．3％；RSD=0．85％。结论：采用紫外分光光度法测定醋酸氟轻松搽剂中醋酸氟轻松的含量，方法快捷，准确，可行。     

HPLC法测定复方醋酸地塞米松搽剂中醋酸地塞米松和樟脑的含量

目的采用HPLC法测定复方醋酸地塞米松搽剂中醋酸地塞米松和樟脑的含量。方法色谱柱为C18,流动相为甲醇-水（60：40,V／V）,检测波长醋酸地塞米松为240nm和樟脑为290am,流速1mL·min^-1,柱温为室温。结果醋酸地塞米松和樟脑分别在5．05～80．8mg·L^-1（r=0．9999）和0．1～5．0g·L^-1（r=0．9999）浓度内线性关系良好,平均回收率分别为100．6％（RSD=0．49％）和100．7％（RSD=0．61％）。结论本方法简便,准确性、重现性好,适用于复方醋酸地塞米松搽剂中醋酸地塞米松和樟脑的含量测定。     

复方泼尼松龙滴鼻液中醋酸泼尼松龙的含量测定法

目的建立复方醋酸泼尼松龙滴鼻液中醋酸泼尼松龙含量测定的简便方法。方法采用紫外分光光度法测定样品中醋酸泼尼松龙的含量。结果醋酸泼尼松龙在11～25μg／ml的线性关系良好,r=0．9998,平均回收率为99．00％（n=5）,RSD为0．64％。结论本方法检测快速,定量准确,重现性好,可用于本院制剂复方泼尼松龙滴鼻液中醋酸泼尼松龙的含量检测。     

HPLC法测定中成药中醋酸泼尼松的含量

目的建立HPLC法测定中成药中醋酸泼尼松含量的方法。方法以醋酸泼尼松为对照品，TLC法筛选定性。结果醋酸泼尼松在0．202—1．01mg／ml之间线性关系良好，线性相关系数r=0．9998，平均回收率99．1％，RSD=1．2％（n=6）。结论HPLC法测定中成药中的醋酸泼尼松的含量，分析速度快，线性范围宽，各项分析指标均达到要求。     

RP—HPLC法测定醋酸氢化可的松乳膏中醋酸氢化可的松的含量

目的：建立了RP—HPLC法测定醋酸氢化可的松乳膏中醋酸氢化可的松的含量。方法：采用AgilentHC C18（4．6IDATI×250mm,5μm）色谱柱,乙腈-水（36：64）为流动相,检测波长254nm,流速1．0ml／min,柱温40℃。结果：醋酸氢化可的松在0．506～202．4μg／ml浓度范围内呈良好线性关系（r=0．99999）;醋酸氢化可的松乳膏的平均回收率为99．28％,RSD为0．42％（n=9）。结论：该方法快速、简便、准确、灵敏、重现性好,并能有效控制药品质量。     

复方醋酸洗必泰溶液测定方法的研究

采用无水乙醇作稀释剂及双波长分光光度法排除了醋酸洗必泰与甲硝唑两组份测定时的相互干扰，建立了复方醋酸洗必泰溶液的测定方法。醋酸洗必泰的回收率为１００．０３％，ＲＳＤ＝０．１５％，甲硝唑回收率为９９．９１％。，ＲＳＤ＝０．５１％。     

高效液相色谱法测定发酵液中醋酸可的松及醋酸泼尼松的含量

介绍了用HPLC法对醋酸泼尼松发酵液中的底物醋酸可的松和产物醋酸泼尼松的含量进行测定的方法。采用正相硅胶吸附色谱柱，以二氯甲烷-乙醚-甲醇-水（体积比86．0：12．0：1．6：0．4）为流动相，在240nm波长下检测，流速0．8ml／min。发现两种组分分离良好，醋酸可的松和醋酸泼尼松的线性范围均为40～600μg／ml；检出限均为0．1μg／ml。该方法准确，灵敏，重现性好。     

流动注射化学发光法测定醋酸泼尼松

利用醋酸泼尼松对Ｃｅ－Ｎａ２ＳＯ３化学发光体系的增强作用，建立了流动注射化学发光法醋酸泼尼松的新方法。化学发光强度与醋酸泼尼松的浓度在０．２－２０．０ｍｇ／Ｌ范围内呈线性关系，检出限０．０３ｍｇ／Ｌ，对０．２ｍｇ／Ｌ醋酸泼尼松标准溶液的１１次平行测定的相对标准偏差为１．８％。     

RP-HPLC法测定醋酸曲安奈德地米乳膏中醋酸曲安奈德和醋酸地塞米松的含量

目的 建立测定醋酸曲安奈德地米乳膏中醋酸曲安奈德和醋酸地塞米松的高效液相色谱法.方法 采用XBridge C18 (250mm×4.6mm,5μm)色谱柱,以甲醇-乙腈-水-冰醋酸(53∶15∶32∶0.1)为流动相,流速1.0mL·min-1,检测波长为240nm.结果 醋酸曲安奈德、醋酸地塞米松分别在10.1520～81.2160μ·mL-1、2.2640～ 18.1120μg·mL-1范围内线性关系良好;平均回收率分别为99.49％ (RSD =0.34％)、99.27％ (RSD =0.59％).结论 所用方法简便可行、重现性好,可较好地控制该制剂质量.     

HPLC法测定复方醋酸曲安奈德滴耳液中醋酸曲安奈德含量

目的：建立HPLC法测定复方醋酸曲安奈德滴耳液中醋酸曲安奈德含量。方法：采用WondaSil^TM C18（250mm×4．6mm,5μm）色谱柱,以甲醇-水（62：38）为流动相,流速1．0ml／min,检测波长240nm。结果醋酸曲安奈德在10．24—30．72μg／ml浓度范围内与吸收度呈良好线性关系（r=0．9998）,平均回收率为100．8％,RSD为1．37％（n=9）。结论：本方法简便、准确、可靠。     

醋酸染色联合碘染色在早期宫颈疾病筛查中的应用价值

目的 探讨醋酸染色联合碘染色在早期宫颈疾病筛查中的应用价值.方法 收集近期在我院妇科门诊检查的344例疑似妇科疾病患者临床资料,并以醋酸染色联合碘染色进行筛查,以病理组织学结果为金标准,比较两种检查方法及两种方法联合的诊断符合率、敏感度、特异度、假阴性率、假阳性率.结果 本组344例患者中病理组织学确诊122例(35.5％)宫颈上皮内瘤样变(CIN)及宫颈鳞癌(SCC).醋酸染色法联合碘染色后肉眼观察法诊断宫颈疾病敏感度为78.7％、特异度为87.4％,诊断符合率77.4％,显著优于单独检测组(P＜ 0.05).结论 醋酸染色法及碘染色法观察筛查宫颈癌适合于在经济条件相对落后地区进行推广应用.     

Acetic acid and phenylquinone writhing test: a critical study in mice

Studies were planned to establish the dose-effect relationship with both acetic acid and phenylquinone and to find out suitable concentrations for these two chemicals for pre- and post screening. The LD50 of acetic acid and phenylquinone were found to be 3.16% and 0.23%, respectively. Based on the studies conducted, the prescreening and postscreening concentrations of 0.5% is recommended for acetic acid, while for phenylquinone, prescreening concentration of 0.005% and postscreening concentration of 0.02% is advocated. Using this criterion in the acetic acid writhing test, analgin was the most potent analgesic while aspirin was the least. However, suprofen was most potent and paracetamol least among analgesics employed against phenylquinone induced writhing.     

对乙酰氨基酚等六组分含量的岭回归法测定

采用岭回归分光光度法同时测定对乙酰基酚、对硝基酚、对氨基酚、艰乙酰氨基酚乙酸酯、对硝在酚乙酸酯和醋酸等６个分的含量,样品不经分离取得满意的结果,平均回收分别为９６．４％、９９．５％、９５．５％、１０６．１％、９９．８％、９５．８％、９．０７％０．９８％、５．２１％、７．９６％。     

气相色谱法测定聚维酮碘溶液中乙醇和乙酸的残留量

目的建立毛细管气相色谱法测定聚维酮碘溶液中乙醇和乙酸的残留量。方法采用毛细管气相色谱法,色谱柱为Agilent J＆W DB-624（30m×0．320mm,1．80ttm）;柱温采用程序升温;进样口温度为200℃;检测器温度为240℃;载气为高纯氮;检测器为FID。结果乙醇和乙酸的质量浓度（p）在0．20032～4．0064g·L-1时与其峰面积（A）之间呈良好线性关系,r分别为1．0000．0．9998。高、中、低3种浓度下的日内和日间精密度良好,RSD为0．62％～2．88％。乙醇和乙酸的检测限分别为0．18、4．68mg·L-1。乙醇和乙酸加样回收率分别为99．70％、99．00％（n=6）,RSD分别为0．59％、1．05％。结论本法简便、快捷、灵敏度高,适用于聚维酮碘溶液中乙醇和乙酸残留量的测定。     

3,4,5-三甲氧基苯乙酸合成工艺改进

目的合成3,4,5-三甲氧基苯乙酸并进行工艺改进。方法以3,4,5-三甲氧基苯甲醛为起始原料,经硼氢化钾还原、氯化、氰化、水解＂一锅＂反应得到3,4,5-三甲氧基苯乙酸。结果所得产物经核磁共振谱确证,总收率64.2%。结论改进后的工艺,操作简便,环境污染小,更适合工业化生产。     

Acetic acid opens large-conductance Ca2+-activated K+ channels in guinea pig detrusor smooth muscle cells

Acetic acid was found to have actions on urinary bladder smooth muscle in our routine ion channel screening assays. Numerous studies have examined the mechanisms of bladder irritation by acetic acid; however, the direct effect of acetic acid on ion channels in detrusor smooth muscle cells has not been evaluated. We used whole-cell patch-clamp techniques to examine the effect of acetic acid on large-conductance Ca2+-activated K+ channels (BKCa) from guinea pig detrusor smooth muscle cells and CHO cells expressing recombinant human BKCaalphabeta1 (CHO BKCaalphabeta1) and human BKCaalpha (CHO BKCaalpha). Acetic acid activated BKCa currents in a concentration-dependent (0.01% to 0.05% v/v) manner in all the cell systems studied. Acetic acid (0.05%) increased BKCa current at +30 mV by 2764+/-918% (n=8) in guinea pig detrusor smooth muscle cells. Acetic acid (0.03%) shifted the V1/2 of conductance-voltage curve by 64+/-14 (n=5), 128+/-14 (n=5), and 126+/-12 mV (n=4) in CHO BKCaalpha, CHO BKCaalphabeta1 and detrusor smooth muscle cells, respectively. This effect of acetic acid was found to be independent of pH and was also not produced by its salt form, sodium acetate. Automated patch-clamp experiments also showed similar activation of CHO BKCaalphabeta1 by acetic acid. In conclusion, acetic acid directly activates BKCa channels in detrusor smooth muscle cells. This novel study necessitates caution while interpreting the results from acetic acid bladder irritation model.     

Role of gastric glutathione in smoke flavouring-induced gastric injury in rats

Some commercial liquid smoke flavourings have been shown to induce acute gastric mucosal injury in rats when given orally as a large single dose. The present study was carried out to examine the mechanism of action in rats of two selected smoke flavourings containing about 10% total acids as acetic acid. These flavourings and 10% acetic acid decreased the concentration of glutathione (GSH) in the glandular stomach. The decrease in gastric GSH was coupled with smoke flavouring-induced gastric injury. Pretreatment with N-ethylmaleimide, a GSH depletor, enhanced acetic acid-induced gastric injury. Pretreatment with cysteine, a sulphhydryl compound, protected rats against smoke flavouring-induced gastric injury. Aqueous fractions of the smoke flavourings, after removal of non-polar compounds and acidic organic compounds (including acetic acid) by diethyl ether extraction, decreased the gastric GSH concentration considerably and had a marked reactivity in vitro with GSH, but these fractions by themselves showed no ability to induce gastric injury. Addition of 10% acetic acid to these aqueous fractions caused greater gastric injury than 10% acetic acid alone, which suggests that these aqueous fractions contain the (unidentified) compound(s) that facilitate acetic acid-induced gastric injury. These findings indicate that gastric endogenous and exogenous sulphhydryls play an important part in gastric cytoprotection.     

Muscle irritation study on cefoperazone (author's transl)

Muscular injury caused by cefoperazone (CPZ) was compared with that of cefazolin (CEZ), cephaloridine (CER) or cephalothin (CET) in adult and juvenile male rabbits. These drugs were dissolved by the way of clinical use and were injected singly into the muscular vastus lateralis. Then, the degree of muscular injury at the time of 48 hours and 7 days after the injection was judged from muscle ratio, gross local observation and histological observations. The degree of muscular injury caused by these drugs was compared also with that of saline 075% or 6% acetic acid. The following results were obtained: There was no difference among CPZ, CEZ and CER on the degree of muscular injury and these changes were almost equal to those of 0.75% acetic acid, however severer than that of saline. While, muscular injury caused by CET was severer than that of CPZ, CEZ, CER or 0.75% acetic acid, but milder than 6% acetic acid. The inflammatory reaction against these drugs was almost similar in adult and juvenile rabbits.     

益气汤中绿原酸和盐酸小檗碱的HPLC测定

建立了HPLC法同时测定益气汤中的绿原酸和盐酸小檗碱.采用C18色谱柱,以1%醋酸甲醇溶液-1%醋酸为流动相,梯度洗脱,检测波长345 nm.绿原酸和盐酸小檗碱分别在4～64 μg/ml和4～32 μg/ml浓度范围内线性关系良好.回收率大于99%,日内、日间RSD均小于2%.     

反相高效液相色谱法测定溃结灌肠液中没食子酸和绿原酸的含量

用反相高效液相色谱法,以甲醇:冰醋酸:二甲基甲酰胺:水(5:1:25:169),甲醇:冰醋酸:水(15:2:83)为流动相测定溃结灌肠液中主要有效成分没食子酸和绿原酸的含量,结果提示:溃结灌肠液中没食子酸含量为0.14～0.21％,绿原酸含量1.30～1.41％,没食子酸回收率为99.82％,变异系数为1.65％,绿原酸含量为99.51％,变异系数为1.05％。