高效液相色谱法在生药分析中的应用

随着植物药越来越受到人们的重视,其需求也不断增长,开展植物药的药代动力学、毒理学研究和质量控制,开发快速、灵敏、具有选择性的分析方法也越来越迫切。高效液相色谱法（HPLC）作为分析化学成分的有效手段,近年在药学领域的应用日趋广泛。现综述高效液相色谱法在生药分析中的应用。

镰形棘豆的生药分析

目的建立镰形棘豆药材品质评价的方法。方法从原植物、性状、显微、薄层鉴别、HPLC法测定含量等对镰形棘豆进行生药分析研究。结果镰形棘豆药材原植物、药材性状、显微特征具有专属性,药材中2′,4′-二羟基查耳酮含量可达0.92%。结论原植物、性状、显微、薄层鉴别及HPLC法测定含量可用于镰形棘豆药材的品质控制。

超临界流体萃取—超临界流体色谱法联用技术及其在生药分析中的应用

超临界流体萃取—超临界流体色谱法联用技术及其在生药分析中的应用梁延寿（山西省中药材学校太原０３００３１）超临界流体萃取－超临界流体色谱法联用技术（ＤｉｒｅｃｔｌｙＣｏｕｐｌｅｄＳｕｐｅｒｃｒｉｔｉｃａｌＦｌｕｉｄＥｘｔｒａｃｔｉｏｎ－Ｓｕｐｅｒｃｒｉ...

超临界流体萃取法及其在生药分析上的应用

本文介绍了超临界流体萃取法的原理、过程及共用于生药成分萃取和其与薄层色谱法联用的情况等。

MEKC法在生药分析中的应用

ＭＥＫＣ法在生药分析中的应用日本学者岩上正藏等将胶束电动色谱法（ＭＥＫＣ）用于生药和汉方制剂分析中，并对其研究结果做了系列报道。１双方制剂中甘草皂甙的定量分析１．１样品配制精密称量甘草粉末１ｇ或汉方制剂１日量，加５０％甲醇７０ｍｌ，超声处理１５ｍｉｎ...

The Alkaloids from Leaves of Croton hemiargyerius var. gymnodiscus

Aim Investigation of alkaloids from the leaves of Brazilian medicinal plantCroton hemiargyerius var. gymnodiscus. Methods Silica gel column chromatography was used repeatedlyfor the isolation and purification, and their structures were identified by extensive spectroscopyand comparison of the chemical and physical data with those of authentic samples reported inliterature. Results Twelve alkaloids were isolated and their structures were identified. ConclusionFour new alkaloids named hemiargines A (1), B (5), C (6) and D (7), together with eight knownalkaloids namely isoc-orydine (2), corydine (3), norcorydine (4), salutaridine (8), glaucine (9),tetrahydropalmatrubine (10), xylopinoine (11), and norlaudanosine (12) were isolated.

Pharmacological intervention of traditional Chinese medicine for the quality of life in patients with colorectal cancer： a systematic review and meta-analysis

Objective： The objective of this study is to evaluate the impact of various traditional Chinese medicine （TCM）approaches on the quality of life in patients with colorectal cancer. Methods： In this study, we systematically performedthe screening of randomized controlled trials from Cochrane Library, Pubmed, Embase, Medline, and Web of Science.The data were extracted by two reviewers independently, and then risk assessment was performed. All the analyses wereconducted using Review Manager 5.3. Results： A total of 18 eligible studies containing 1312 patients were included.Experimental group were treated with TCM combined with Western medicine or TCM alone （N = 688） and controlgroup were treated with Western medicine treatment alone （N = 624）. The results showed that the recent clinicalefficiency between the two groups was not statistically significant （P = 0.06）. KPS scores of the experimental group werehigher than those in the control group [P 〈 0.001, WMD = 9.60, 95%CI = （5.62, 13.57）]. The toxicity comparisonshowed that the occurrence of toxicities, such as leucopenia, thrombocytopenia, nausea and vomiting, diarrhea, andneurotoxicity in the experimental group was lower than that in the control group [P 〈 0.001, OR = 0.31, 95%CI = （0.19,0.50）], [P = 0.003, OR = 0.49, 95%CI = （0.31, 0.78）], [P 〈 0.001, OR = 0.30, 95%CI = （0.16, 0.54）], [P 〈 0.001, OR =0.40, 95%CI = （0.27, 0.58）], and [P 〈 0.001, OR = 0.43, 95%CI = （0.30, 0.61）]. The immunological test comparisondemonstrated that the immunological parameters （CD3, CD4, and CD4/CD8） showed higher values in the experimentalgroup than those in the control group [P 〈 0.001, MD = 5.55, 95%CI = （4.83, 6.28）], [P 〈 0.0001, MD = 6.75, 95%CI =（5.25, 8.26）], and [P = 0.001, MD = 0.26, 95%CI = （0.10, 0.41）]. Conclusions： TCM did not show significant recentclinical efficiency. However, treatment with TCM showed increase in KPS scores in patients with colorectal cancer,alleviation of toxicity associated with chemotherapy, regulation of autoimmunity, and improvement in the quality of lifeof patients.

Network Pharmacology-based Analysis on the Molecular Biological Mechanisms of Xin Hui Tong Formula in Coronary Heart Disease Treatment

Objective To investigate the potential molecular mechanism of Xin Hui Tong Formula (XHTF) in the treatment of coronary heart disease (CHD) by using network pharmacology and bioinformatics. Methods The targets network of CHD was constructed through Therapeutic Targets Database (TTD) and Drugbank database;The XHTF pharmacodynamic molecule-targets network and the XHTF pharmacodynamic molecule-CHD targets network were explored by the traditional Chinese medicine systems pharmacology database and analysis platform (TCMSP). And the multi-targets mechanism and molecular regulation network of XHTF in the treatment of CHD were explored from multiple perspectives by Gene Ontology (GO) analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) database pathway enrichment analysis. Results A total of 88 CHD targets were screened out through the Therapeutic Targets and the Drugbank database. 393 compounds and corresponding 205 drug targets of XHTF were retrieved from TCMSP. A total of 13 known targets directly related to the development of CHD were retrieved from the disease-related databases: TP53, MAPK14, NFKB1, HSPA5, PLG, PTGS2, ADRB1, NOS2, CYP3A4, GRIA2, CYP2A6, GRIA1, PTGS1. XHTF also contained 118 drug targets that directly interact with CHD targets. GO enrichment analysis showed that the biological processes of 13 direct targets proteins were found to be mainly enriched in response to drug, cellular response to biotic stimulus, long-chain fatty acid metabolic process, fatty acid metabolic process and regulation of blood pressure. KEGG pathway enrichment analysis found that XHTF participated in the CHD pathological process mainly through retrograde endocannabinoid signaling, regulation of lipolysis in adipocytes, cAMP signaling pathway, chemical carcinogenesis and other pathways. Conclusions XHTF plays a role in the treatment of CHD through multiple targets and multiple pathways, and provides a scientific basis for the theory of "virtual standard" in the treatment of CHD.

Therapeutic effect of different treatment methods on functional anorectal pain

Objective： To observe the clinical efficacy of oral traditional Chinese medicine （Jiaweitiaoqi decoction）, electroacupuncture, biofeedback, and combined treatment on functional anorectal pain （FAP）. Methods： A total of 200 patients with FAP were randomly divided into 4 groups, with 50 patients in each group. Group 1 was given oral Jiaweitiaoqi decoction; group 2 was given electroacupuncture at the lumbosacral acupoints; group 3 was given biofeedback training; and group 4 was given combined treatment. The numeric rating scale （NRS）, Short Form-36 （SF-36） quality of life scale, static pressure of the anal canal, and maximum systolic pressure were observed in the 4 groups. Results： The observation indices of the 4 groups were all improved after treatment compared with those before treatment, and the fourth group showed the most obvious improvement. Regarding NRS scores, the static pressure of the anal canal, and maximum systolic pressure, group 4 had lower values than the other 3 groups （P 〈 0.05 for all）. In the SF-36 quality of life score, group 4 showed a higher value than the other 3 groups （P 〈 0.05）. Conclusion： Non-drug therapy including acupuncture and physical exercise can enhance the clinical efficacy of single Chinese medicine in the treatment of FAP .

The effect of traditional Chinesemedicine washing combined withmassage for neonataljaundice： a meta-analysis

Objective： To systematically assess the effect of traditional Chinese medicine washing （TCM washing） combined withmassage for the treatment of neonatal jaundice.Methods and analysis： Databases, including PubMed, the Cochrane Library, Embase, Web of Science, the ChineseBiomedical Literature Database （CBM）, CNKI, and Wanfang Data were electronically searched for randomizedcontrolled trials （from inception to July 2017）. The methodological qualities of included trials were evaluated by theCochrane risk of bias assessment tool. The meta-analysis was performed by using RevMan 5.3 software.Results： Overall, thirteen trials with a total of 1998 participants were included. The results of meta-analysis indicatedthat TCM washing combined with massage group was significantly superior to the control group in the first meconiumtime （MD, -16.67; 95% CI, -24.59 to -8.74; P〈0.001）, time for transformation of meconium （MD, -15.44; 95% CI,-23.59 to -7.28; P〈0.001）, transcutaneous bilirubin index changes [after treating three days （MD, -1.99; 95% CI, -2.57 to-1.40; P〈0.001）, after treating four days （MD, -1.86; 95% CI, -2.77 to -0.95; P〈0.001）, after treating five days （MD,-2.44; 95% CI, -3.47 to -1.42; P〈0.001）, after treating six days （MD, -2.23; 95% CI, -3.30 to -1.16; P〈0.001）, and thechanges of serum bilirubin levels [after treating five days （MD, -3.17; 95% CI, -5.83 to -0.50; P=0.02）, after treating sixdays （MD, -1.63; 95% CI, -3.10 to -0.16; P=0.03）, after treating fifteen days （MD,-1.20; 95% CI, -1.99 to -0.41; P=0.003）.Conclusions： TCM washing combined with massage may be an effective therapy for the treatment of neonatal jaundice.It can accelerate the excretion of meconium, shorten the time for transformation of meconium, and decreasetranscutaneous bilirubin index and the level of serum bilirubin. But it should be careful to interpreting these findings.Well-designed RCTs are needed to further clarify the conclusion.

Analysis Method for Pesticide Residues in Biological Matrices： Gas Chromatography-mass Spectrometry

Pesticides have done a great service to human, but their use is not safe for public health. Apart from pesticides acute toxicity, their chronic toxicity can cause various problems for human health. The objective of this work was to validate a liquid-liquid extraction method, which allows a fairly reliable analysis of pesticides using gas chromatography-spectrometry mass （GC/MS） in toxicology laboratory at National Institute of hygiene, Rabat Morocco. The equipment required to perform these analyzes are the biological matrices （blood, gastric fluid）, in which the authors have doped the Organophosphorus pesticides such as Chlorpyrifos, Dichlorvos and Organochlorine pesticide： dichlorodiphenyltrichloroethane （DDT） and Heptachlor. After extracting the mixture with toluene, the supernatant was collected after centrifugation and concentrated in a small volume of 1.5 mL and then analyzed in GC/MS. After analyzing, the authors found that the yields of each pesticide in samples are significant; respectively they represented 73.4% of Chlorpyrifos, 70.8% of Dichlorvos, 47.8% of DDT and 71.6% of Heptachlor. The blood has a strong link with the most pesticides, where it＇s important to use the GC/MS to identify these products. The extraction with toluene was effective, especially to OP, but it＇s also sensitive to OC.

Cell Area and Strut Distribution Changes of Bent Coronary Stents:A Finite Element Analysis

Coronary stents are metal coils or mesh tubes delivered to blocked vessels through catheters, whic Recently, special drugs h are expanded by balloons to reopen and scaffold target vessels. are carried by stents （drug-eluting stents） to further reduce instent restenosis rate after stenting procedure. However, continual study on biomechanical characteristics of stents is necessary provide a more suitable drug loading for better interactions between stents and tissue, or to platform for drug-eluting stents. The purpose of this paper is to show how finite element methods can be used to study cell area and strut distribution changes of bent coronary stents. A same bending deformation was applied to two commercial coronary stent models by a rigid curved vessel. Results show that the stent design influenced the changes of cell area and strut distribution under bending situation. The stent with links had more cell area changes at outer curvature, and the stent with peak-peak （ 〉 〈 ） strut design could have strut contact and overlapping at inner curvature. In conclusion, this finite element method can be used to study and compare cell area and strut distribution changes of bent stents, and to provide a convenient tool for designers in testing and improving biomechanical characteristics of new stents.

The application of immunoassay in bioanalysis

Immunoassay technology is an analytical method with high sensitivity and specificity; it provides a technique to assay materials which cannot be measured by other methods, or are difficult to detect. It plays a very important role in biological sample pre-treatment, therapeutic drug monitoring and drug determination, and is one of the important means for in vivo drug analyses. This paper reviews immunoassays commonly used in bioanalysis, including immunoextraction and immunodepletion for pretreatment of biological samples, conventional immunoassay methods and new immunoassay technologies for determination of target drugs.