HPLC法测定六味地黄胶囊中马钱苷含量

目的：建立六味地黄胶囊中马钱苷含量测定方法。方法采用Phenomenex色谱柱(250mm×4.6mm,5μm),流动相为乙腈-0.1%磷酸(8：92);流速1.0ml·min-1,柱温30℃,检测波长为236nm。结果马钱苷在11.25μg/ml~180.0μg/ml范围内,呈良好的线性关系(r=0.9993),定量限为7.88ng·ml-1,回收率为97.1%,RSD为1.2%(n=9)。结论本方法简便、准确。方法的稳定性、重复性良好,可作为六味地黄胶囊质量分析控制方法。     

HPLC法同时测定益心舒片中丹参酮ⅡA的含量

目的：建立采用 HPLC法测定益心舒片中丹参酮ⅡA含量的方法。方法采用 KromasilC18色谱柱(4.6 mm×250 mm,5 um),以甲醇原水(82：18)水梯度洗脱,流速为1 mL/min,柱温30℃；紫外检测器波长为270 nm。结果丹参酮ⅡA在2.556~51.12μg/ml范围内呈良好的线性关系(r=0.9998)。其平均回收率为97.58%,RSD为0.6%(n=9)。结论本方法灵敏高、简便、重复性好,可用于益心舒片中丹参酮ⅡA的含量测定。     

HPLC法测定感丹中三组分的含量及马来酸氯苯那敏含量均匀度

目的建立高效液相色谱法测定感丹(氨酚伪麻那敏泡腾颗粒)中马来酸氯苯那敏、对乙酰氨基酚、盐酸伪麻黄碱的含量及马来酸氯苯那敏含量均匀度。方法采用Agela Venusil XBP-C_(18)柱(4.6mm×250mm,5μm),流动相为甲醇-0.05mol.L~(-1)磷酸二氢钾溶液(10%磷酸调pH至3.0)(25:75),流速为1.0mL.min~(-1),检测波长为210nm,进样量10μL,柱温为35℃。结果马来酸氯苯那敏浓度在0.16~0.56μg.mL~(-1)之间、对乙酰氨基酚浓度在2.0~7.0μg.mL~(-1)之间、盐酸伪麻黄碱浓度在0.24~0.84μg.mL~(-1)之间均与峰面积呈良好线性关系,r=0.999 0~0.999 8;平均加样回收率分别为101.62%(RSD=1.26%)、97.04%(RSD=0.98%)、95.02%(RSD=2.18%)。结论本法操作简便,结果准确,可作为该制剂的质量控制方法。     

HPLC法测定青蒿琥酯片的含量

目的 研究青蒿琥酯片的含量测定方法.方法 采用高效液相色谱法.色谱柱Kromasil ODS柱(4.6×250 mm,5μm);流动相乙腈-水(三氟乙酸调PH=3.5±0.5)(6535);流速为1.0ml·min-1;检测波长为210.结果 青蒿琥酯在0.01～0.03 μg·mL-1浓度范围内与峰面积呈良好的线性关系(r=0.9997),平均回收率为99.67%(RSD=1.10%,n=6).结论 本法专属性强,重现性好,操作简便,结果准确,可用于青蒿琥酯片的含量测定.     

HPLC法测定珍珠菜提取物中芦丁的含量

目的 建立高效液相色谱法测定珍珠菜提取物中芦丁含量.方法 色谱柱为Diamonsil C18(4.6mm×250mm);流动相为甲醇-0.4%冰醋酸-四氢呋喃(30∶60∶10);流速1.0ml/min;检测波长355nm.结果 提取物中芦丁的保留时间为25.4min,色谱峰分离良好,对照品芦丁线性范围为1.0312～30.936靏/ml(r=0.9994,n=5),方法回收率为100.1%,RSD为1.03%.结论 该法可用于珍珠菜提取物中芦丁的含量测定,可以用来对提取物进行质量控制.     

交联透明质酸凝胶中交联剂的HPLC测定

目的 建立交联透明质酸钠凝胶中交联剂二乙烯基砜(DVS)残留量的测定方法.方法 用高效液相色谱法测定DVS残留量,色谱条件为:色谱柱为C8(4.6mm×250mm),流动相为25mmol/L磷酸二氢钾溶液(pH3.0)-乙腈(90∶10),检测波长为210nm.结果 DVS在1～50μg/g范围内线性关系良好(r=0.999 7),平均回收率98.4%,RSD为1.02% .结论 用高效液相色谱法测定交联透明质酸钠凝胶中DVS残留量,方法准确、可靠,可用于产品质量控制.     

高效液相色谱法测定赤芍中芍药苷的含量

目的 建立赤芍中芍药苷的含量测定方法,探讨不同溶液提取对芍药苷含量的影响.方法 采用甲醇和70%乙醇超声提取样品,用Agileni1100型高效液相色谱仪,Agilent EeliPse XDB C18(4.6mm×250mm,5靘)色谱柱,柱温:25℃,流动相:V(乙腈):V(0.1%磷酸溶液)=14:86,流速:1.0ml/min,检测波长:230nm,进样体积10μL.结果 芍药苷进样量在0.27μg～1.60μg范围内与峰面积呈良好线性关系,R=0.9998;平均回收率为100.34%,RSD=0.46%.乙醇提取液中芍药苷的平均含量为0.0700μg/ml(n=3),甲醇提取液中芍药苷的平均含量为0.0462μg/ml(n=3).结论 采用70%乙醇作为溶液提取赤芍芍药苷得率高;本实验所建立的方法重复性良好,准确度较高,可用于赤芍中芍药苷的质量控制.     

离子色谱法测定液体创可贴中的氮含量

目的建立离子色谱法检测液体创可贴中氮含量的方法,对液体创可贴中氮含量进行准确定量来衡量液体创可贴中硝化棉的投料量,进而间接衡量液体创可贴的成膜性、硬度、附着力等性能。方法用DIONX ICS-1100离子色谱仪进行检测,色谱柱AS9-HC柱(4 mm×250 mm),淋洗液为5.0 mmol/L对羟基苯甲酸和5.3 mmol/L N,N-二乙基乙醇胺混合液,流速1 mL/min,电导检测器,外标法定量,用不同浓度梯度的亚硝酸根离子对照品和不同浓度梯度的硝酸根离子对照品分别绘制工作曲线,分别分析不同浓度的亚硝酸根离子和硝酸根离子的出峰时间和峰面积,选取A医疗器械厂家的液体创可贴产品为待测样品,最后将待测样品消解后与对照品平行的进行样品处理并检测。结果亚硝酸根离子在浓度2.9998~6.9995μg/mL范围内与峰面积保持良好的线性关系(r=0.9990),检出限为0.14999 g/mL(S/N=3),精密度相对标准偏差(relative standard deviation,RSD)为1􀆰62%(n=5),平均加标回收率为99.9%(n=9);硝酸根离子在浓度1.7015~3.9701μg/mL范围内与峰面积保持良好的线性关系(r=0.9999),检出限为0.08507μg/mL(S/N=3),精密度RSD为1.48%(n=5),平均加标回收率为100.9%(n=9)。最后对测试样本测试的结果进行计算,得出测试样本中氮的平均含量为11.24 mg/g。结论该方法具备良好的线性范围,准确度高、重复性好,样品经过前处理后,不受样品中其他组分的干扰,可用于液体创可贴中氮含量的测定。     

HPLC法测定加味逍遥散复方中丹参酮ⅡA的含量

目的 建立加味逍遥散复方中丹参酮ⅡA的测定方法。方法 采用十八烷基硅烷键合硅胶柱（inertsil ODS-3柱 250 mm×4.6 mm,5 μm）;流动相:乙腈-0.1%磷酸,进行梯度洗脱;检测波长:270 nm;流速:1.0 ml/min;柱温:20℃。结果 丹参酮ⅡA在0.0001~0.0005 μg范围内呈现良好的线性关系[r=0.9991,平均回收率为97.36%（RSD=1.38%,n=6）]。结论 本方法专属性强,准确度高,重现性良好,可用于加味逍遥散的质量控制。     

HPLC法测定对乙酰氨基酚片的含量

目的 建立HPLC法测定对乙酰氨基酚片的含量。方法 色谱柱为Agilent Eclipse XDB-C18柱（4.6 mm×150 mm,5 μm）;流动相为甲醇-水（20∶80）,流速为1.0 ml/min,检测波长为244 nm,柱温30 ℃。结果 对乙酰氨基酚浓度在10.16~30.48 μg/ml范围内线性关系良好,r=0.9998（n=5）;平均加样回收率为100.04%,RSD=0.95%（n=6）。结论 HPLC法操作简便、结果准确、重复性好、专属性强,适用于测定对乙酰氨基酚片中对乙酰氨基酚的含量。     

Level of functioning of siblings and parents of probands of varying degrees of retardation

A further analysis of already published data supports the position that retardates of low ability level less frequently have retarded siblings, retarded parents, and parents low in occupational level than do retardates higher in ability level. The analysis supports the position that there are two types of retarded individuals, persons retarded as a result of gene or chromosomal anomalies, brain injury, etc., who more frequently occur in the lower-level retardate group, and persons whose retardation represents polygenic segregation, who more frequently occur in the higher-level group.     

局部注射辛伐他汀对骨质疏松大鼠股骨髁骨小梁的改建效应

背景：局部注射具有成骨作用的辛伐他汀,可显著增加骨质疏松大鼠股骨颈及股骨髁部的骨密度及力学强度,分析局部注射辛伐他汀对股骨髁骨小梁的影响。 目的：进一步研究骨质疏松大鼠股骨内局部注射辛伐他汀对股骨髁骨小梁的影响。为将辛伐他汀应用于临床骨质疏松局部治疗提供实验基础。 方法：18只雌性SD大鼠双侧卵巢切除后3个月,制备大鼠骨质疏松模型。实验大鼠随机数字表法均分为3组,分别在实验大鼠的右侧股骨髓腔内单次注射辛伐他汀溶液5 mg、10 mg,对照组单纯注射空白载体。分别在注射后1个月处死大鼠并取材。Micro-CT扫描并定量分析骨组织形态变化。 结果与结论：给药后1个月,Micro-CT扫描结果显示,辛伐他汀治疗组的骨微结构参数如骨皮质厚度、骨小梁密度及连接率明显优于对照组。说明疏松骨骼单次注射小剂量辛伐他汀可显著促进股骨髁部骨小梁改建,改善骨骼微结构,可为强化局部、防治骨质疏松骨折的新选择进一步提供实验基础。     

石斛属民族药用植物的分类及生药学研究

中药石斛早在《神农本草经》中就被列为上品,其应用历史悠久,具有养阴生津、补肾益气、润喉护嗓、活血明目、抗癌防老等功效。本文对国内外石斛属民族药用植物的分类及生药学研究进行了综述。     

膝关节骨性关节炎的关节镜治疗体会

目的我科自2001～2005年4月对59例67膝的骨性关节炎（0A），进行关节镜检查及镜下清理术。方法镜检：膝关节骨性关节炎伴不同程度滑膜炎，滑膜皱壁粘连纤维片，关节软骨不同程度破坏。镜下清除增生滑膜，松解粘连，去除剥脱软骨、修复关节面。结果随访2月～4年，平均1.5年，术后综合评估2月～1年，优良率94％；1～2年，优良率79.2％；2年以上优良率54.8％。结论关节镜对膝关节骨性关节炎诊断能提供了比较全面的资料，并对骨性关节炎早期有良好疗效，具有创伤小、恢复快、并发症少和重复治疗等优点。     

Anatomical study of distribution of valves of the cutaneous veins of adult''s limbs

Since the cutaneous veins of the four limbs have been used as autogenous grafts in the treatment of cardiovascular disorders, knowledge of distribution of the valves is increasingly required depending upon the use. In the gross anatomical study of distribution of valves of the trunci venae, there has been argument about locational relationships between the venous roots and the valves in the vicinity of the roots and the inter-valvular distance. However, there have been only few reports discussing detailed information about valves of the cutaneous veins of the four limbs. The authors observed patterns of distribution of the cutaneous venous valves of the four limbs of cadavers prepared for practice in anatomy. The following parts were excised from each cadaver: the cephalic, basilic, and the great saphenous veins, which originate from the acral venous network and flow into the proximal deep veins, and the venous roots communicating with these veins. An incision was made on each excised vein in the direction of the long axis under observation with a stereoscopic microscope, and the inter-valvular distance and the distance between the valve and the orifice of venous root in the vicinity of the valve were measured. The inter-valvular distance varied with type of the truncus venae, and it varied according to area even in the same truncus venae.     

Pathways of the realization of immunomodulating effects of neurotransmitters

Translated fromByulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 115, N ^o 4, pp. 401–404, April, 1993     

Characterization of sterols of three digenetic trematodes of buffalo

Sterols of three digenetic trematodes were isolated and characterized by infrared and 1H nuclear magnetic resonance spectroscopies, and gas-liquid chromatography and gas chromatography-mass spectrometry. Sterols identified were cholesterol, cholestanol, 24-methylcholesterol, 24-methylcholestanol, 24-ethyl-22-dehydrocholesterol, 24-ethyl-22-dehydrocholestanol, 24-ethylcholesterol and 24-ethylcholestanol.     

Mechanisms of generation of slow components of bioelectric activity in diagnostics of functional state of the gastrointestinal tract

New electrophysiologic devices were used for the diagnostics of the state of excitable structures in the gastrointestinal tract and correction of their motor functions. Bioelectrical and biomechanical activities form the basis of functioning of internal organs. The mechanisms of generation of slow bioelectrical activity that are important for clinical and physiological studies are described. One of these mechanisms is a capacitance parametric transducer converting the energy of contractions into specific electric signals reflecting muscle functions. Another mechanism results from slow oscillations of resting potentials of interrelated excitable cells in large neuromuscular structures of internal organs. The elaborated procedure is efficient for preventing early postoperative paresis of the gastrointestinal tract. Translated fromByulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 128, No. 10, pp. 448–452, October, 1999     

胃小弯侧血管弓的MDCT解剖

目的：研究正常胃小弯侧血管弓及其属支血管的多排螺旋CT表现。方法：回顾性分析51例正常成人的上腹部CT资料,观察胃小弯侧血管弓及其属支血管的显示情况、血管弓形态及其与胃壁的关系。结果：51例均显示胃小弯侧血管弓,血管弓贲门部属支、胃体部属支和幽门部属支分别显示46例、15例和10例;血管弓与胃壁紧邻41例。结论：MDCT检查可良好显示正常胃小弯侧血管弓及其属支血管。     

Assessment of the efficacy of treatment of hemangiomas

Assessment of the aftereffects of cryoexposure and ultrahigh-frequency cryoexposure on hemangioma tissue of various types, cavernous and squamous, showed a higher cryogenic effect in hemangiomatous tissue preexposed to ultrahigh-frequency waves. A quantitative criterion is proposed for assessing the efficacy of the studied methods of exposure. Translated fromByulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 119, N ^o 6, pp. 669–672, June, 1995