加味当归四逆壳聚糖喷膜剂的研制

研制加味当归四逆壳聚糖喷膜剂,并且制定生产工艺和质量标准。试验采用水煎法提取处方药材;通过正交试验确定壳聚糖盐酸盐、PVPK-30以及乙醇成膜材料的最佳配比;按照药典相关规定,采用紫外分光光度法测定每瓶总黄酮的含量。成膜材料的最佳配比为壳聚糖盐酸盐1%,3%PVPK-30和40%乙醇。通过TLC鉴定样品含有阿魏酸和芍药苷成分。质量标准中性状为澄清有清凉气味的红棕色液体,总黄酮的含量1.83 mg/mL。以处方为219 mg/mL中药复方,1%的壳聚糖盐酸盐,3%的PVPK-30以及40%的乙醇制备出加味当归四逆壳聚糖喷膜剂,且制定质量标准中样品含有阿魏酸和芍药苷并且每瓶总黄酮含量满足1.83 mg/mL。     

稳健方法用于光度法药物制剂的多组分测定

将最小平方中位数参数估计方法结合多元线性直接校正技术用于复方苯海拉明滴鼻液紫外光度法多组分同时测定，获得明显优地以最小二乘原理为基础的校正技术的浓度估计，表明该方法有良好的应用价值。     

Aqueous humor and plasma concentrations of a compounded 0.2% solution of terbinafine following topical ocular administration to normal equine eyes

Objective To determine the transcorneal penetration and systemic absorption of a compounded 0.2% terbinafine solution following repeated topical administration to normal equine eyes. Sample population Six healthy adult horses with normal ocular examinations. Procedures One eye of each horse received 0.2 mL of a compounded 0.2% terbinafine solution every 4 h for seven doses. During the 1 h following administration of the final dose, multiple peripheral blood samples were obtained, and a single aqueous humor (AH) sample was collected at the end of the hour. AH and plasma concentrations of terbinafine were determined using high pressure liquid chromatography (HPLC). Stability of the formulation was assessed with HPLC analysis over a 14‐day time period. Results Terbinafine was not detected in the AH or plasma of any horse at any time point. No signs of ocular irritation or systemic toxicity were noted in any horse at any time point. The solution was stable over 14 days. Conclusion Topical ocular administration of compounded 0.2% terbinafine solution does not result in detectable AH or plasma levels following administration to normal equine eyes, suggesting its use for deep corneal or intraocular fungal infections in equine ophthalmology may be limited.     

盐酸左旋咪唑擦剂驱除猪消化道线虫效果观察

应用１５％盐酸左旋咪唑擦剂对自然感染猪蛔虫,结节虫,类圆线虫,毛首线虫等消化道线虫的猪进行了驱虫试验。结果试验组猪蛔虫虫卵减少率为９９．９％,虫卵转阴率为８５．７％,类圆线虫虫卵减少率和虫卵转阴率均为１００％,结节虫分别为９７．６％和３７．５％,毛首线虫分别为２７．３％和１２．５％。     

不同产地益母草饮片中盐酸水苏碱含量差异分析

目的比较全国不同产地益母草饮片中盐酸水苏碱含量差异,为益母草的质量研究提供参考依据。方法按照2010版《中国药典》规定,采用HPLC-ELSD法测定各样品中盐酸水苏碱的含量。结果不同产地益母草饮片中盐酸水苏碱含量差异很大,在0.102%～2.142%之间。结论为保证益母草饮片的质量和疗效,建议选择规范化人工栽培的益母草。     

盐酸沃尼妙林预混剂的研制及其对猪增生性肠的炎疗效观察

以盐酸沃尼妙林为原料,利用流化床制粒包衣技术成功制备微丸型盐酸沃尼妙林预混剂,用HPLC测定制剂中主药含量。结果表明,制得的产品粒度均匀、流动性良好、含量稳定。选用猪增生性肠炎的自然发病猪为试验对象,以延胡索酸泰妙菌素疗效为对照。结果显示,试验组的高中低不同剂量组(中剂量为推荐剂量)与对照组对猪增生性肠炎治愈率分别为91.0%、82.0%、66.7%和75.3%,有效率分别为96.7%、88.7%、76.7%和83.6%,相同推荐剂量的微丸型盐酸沃尼妙林预混剂组的治愈率和有效率均高于泰妙菌素预混剂组(P<0.05)。     

复方阿莫西林纳米乳的高效液相色谱分析及有效期研究

利用高效液相色谱仪建立测定复方阿莫西林纳米乳(AMX-LH-NE)中阿莫西林(AMX)和盐酸左氧氟沙星(LH)两种主药含量的高效液相色谱(HPLC)分析方法,并确定该药物的有效期。结果表明,AMX和LH分别在0.5～50μg/mL和5～60μg/mL浓度范围内线性关系良好;平均回收率为(99.27±1.26)%和(99.65±1.51)%,相对标准偏差(RSD)为1.27%和1.52%;平均保留时间为(10.22±0.13)min和(7.15±0.13)min;日内精密度RSD为1.56%和1.75%,日间精密度RSD为2.46%和2.62%。AMX-LH-NE的有效期为20个月。建立的HPLC分析方法专属性好,回收率、重复性和精密度高,可用于AMX-LH-NE制剂的主药含量测定及其质量控制。     

Comparative efficacies of oral ketoconazole and terbinafine for reducing Malassezia population sizes on the skin of Basset Hounds

The objective of this study was to compare the efficacy of oral ketoconazole and terbinafine for reducing population sizes of Malassezia yeasts on canine skin. Twenty-one Basset Hounds were randomised in three groups of seven according to Malassezia populations. Dogs in the first group were treated by oral administration of ketoconazole (Ketofungol) 200 mg, Janssen-Cilag) at 10 mg x kg-1, every 24 h with food, for 3 weeks. Dogs in the second group were treated by oral administration of terbinafine (Lamisil) 250 mg, Novartis) at 30 mg x kg-1, every 24 h with food, for 3 weeks. The seven remaining dogs were used as controls. Malassezia population sizes were assessed by use of contact plates on four cutaneous sites at days 7, 14 and 21. Both ketoconazole and terbinafine were effective in reducing the baseline levels of Malassezia organisms with no significant difference between the two drugs. In further studies, oral terbinafine should be evaluated for the management of canine cases of Malassezia dermatitis.     

Flash electroretinography in standing horses using the DTL microfiber electrode

Purpose The goal of our study was the evaluation of a practical method for the recording of flash electroretinograms (ERGs) in sedated, standing horses with the DTL? microfiber electrode. Methods The horses were sedated intravenously with detomidine hydrochloride (0.015 mg/kg). The pupil was dilated and the auriculopalpebral nerve was blocked. The ERGs were recorded with the active electrode on the cornea (DTL?), the reference electrode near the lateral canthus, and the ground electrode over the occipital bone. The light intensities of the white strobe light were 0.03 cd·s/m² (scotopic) and 3 cd·s/m² (scotopic and photopic). Photopic and scotopic single flash and flicker responses to Ganzfeld stimulation were recorded. During the 20‐min dark adaptation period the retina was stimulated every 5 min with the 0.03 cd·s/m² single flash. Results The median b‐wave amplitudes and implicit times were 38 µV and 33 ms (photopic cone‐dominated response), 43 µV and 63 ms (5‐min dark adaptation), 72 µV and 89 ms (10 min), 147 µV and 103 ms (15 min), 188 µV and 109 ms (20 min, 0.03 cd·s/m², rod response), and 186 µV and 77 ms (20 min, 3 cd·s/m², maximal combined rod‐cone response). A steady increase in amplitude and implicit time was noted during dark adaptation. No oscillatory potentials could be isolated. Conclusions The use of detomidine hydrochloride sedation and the DTL? microfiber electrode allowed the recording of good quality ERGs. This protocol should permit the detection of functional problems in the retina without the risk involved with general anesthesia.     

甲霜灵·刺复配剂对棉疫病菌的联合毒力

在实验室条件下，测定了甲霜灵和霜霉威复配剂对棉疫病菌（Phytophthora boehmeriae）的联合毒力。结果表明，复配剂MPA、MPB、MPC对棉疫病菌的DC5。分别为0．0555,0．1044μg／mL和0．0845μg／mL，对照单剂甲霜灵和霜霉威对棉疫病菌的EC50分别为0．0391μg／mL和10．6183μg／mL；联合毒力分析表明，甲霜灵和霜霉威按1：1．5复配有增效作用，按1：1和1．5：1复配有相减作用。