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Study of phyto-chemical constituents of Ricinus communis Linn. under the influence of industrial effluent 蓖麻植物化学成分的研究。受工业废水的影响
Pub Date : 2013-08-01 DOI: 10.1016/j.jopr.2013.08.005
Kavita Tyagi , Sandhya Sharma , Rajat Rashmi , Sanjiv Kumar

Aims of the study

To carried out the phyto-chemical constituents of Ricinus communis Linn. growing in a highly polluted and non-polluted sites.

Method

The industrial effluent was analysed by APHA method. The phyto-chemical constituents were analysed by Cromwell, 1955 & Trease and Evans, 1983 were followed. TLC was analysed by WHO, 1998. Chlorophyll was estimated according to Arnon, 1949.

Results

The physico-chemical parameters of analysed effluent were found higher values as compared to standard values. Colour reaction tests showed the degree of changes in plants of polluted sites. The number of spots were decreased in the plant samples of polluted sites. Chlorophyll a, chlorophyll b and total chlorophyll were decreased in those leaves which were collected from polluted sites.

Conclusion

It may be concluded that the plants growing at non-polluted areas are not suitable for quality medicines, since, the study reveals quantitative alternations in the chemical constituents of plants growing in industrial areas and other parameters also found declining values in plants collected from polluted area.

目的研究蓖麻的植物化学成分。生长在高污染和非污染地区。方法采用APHA法对工业废水进行分析。植物化学成分分析由克伦威尔,1955 &接着是Trease和Evans, 1983。世界卫生组织于1998年对薄层色谱进行了分析。叶绿素的估算依据Arnon, 1949。结果分析出水的理化参数均高于标准值。颜色反应测试显示了受污染地点植物的变化程度。污染场地植物样品中斑点数量有所减少。叶绿素a、叶绿素b和总叶绿素含量均降低。结论无污染地区的植物不适合生产优质药物,因为研究发现,工业区植物的化学成分和其他参数在污染地区采集的植物中也出现了定量变化。
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引用次数: 5
Comparison of hepatoprotective activity of Swertia chirayita and Andrographis paniculata plant of North–East India against CCl4 induced hepatotoxic rats 印度东北獐牙菜和穿心莲对CCl4诱导的肝毒性大鼠肝保护作用的比较
Pub Date : 2013-07-01 DOI: 10.1016/j.jopr.2013.07.008
Vinod Kumar Verma, Khomendra K. Sarwa, Atul Kumar, Md. Kamaruz Zaman

Background

The aim of present study was to demonstrate and compare the hepatoprotective activity of ethanol extract of two well-known plants Swertia chirayita Buch-Ham and Andrographis paniculata (Burm.f.) Nees, in Swiss albino rats.

Method

The hepatotoxicity induced by single dose of CCl4 dissolved in olive oil (1 ml/kg b.w.; p.o.) while vehicle control given food and water only. Vehicle as well as hepatotoxic rats were divided into groups (n = 6). Standard group treated with Silymarin (50 mg/kg b.w.; p.o.) daily for 16 days; and treated group received ethanol extract of plant A. paniculata and S. chirayita at the dose of 200 mg/kg b.w. p.o. daily for 16 days respectively.

Results

Ethanol extract of plant S. chirayita and A. paniculata, at a dose of 200 mg/kg body weight exhibited protective lowering effects of the serum enzyme levels SGPT, SGOT, GGTP and SALP to a significant extent. The pronounced activity observed in ethanol extract of A. Paniculata with dose of 200 mg/kg (b.w.) however decreases the elevated level of bilirubin, and lipid peroxidase (LPO). The decreased level of TP, GSH, SOD and CAT levels in CCl4 induced hepatotoxic animal were significantly increase on treatment with ethanol extract of A. Paniculata and S. chirayita plant. The histopathological studies of liver were also supported hepatoprotective activity of A. paniculata.

Conclusion

Since results of biochemical studies conclude that the ethanol extract of A. Paniculata showed significant better hepatoprotective as compare to S. chirayita.

本研究的目的是证明和比较两种知名植物獐牙菜和穿心莲的乙醇提取物对肝脏的保护作用。Nees,在瑞士的白化老鼠身上。方法橄榄油中溶解CCl4单剂量(1 ml/kg b.w)诱导肝毒性;p.o.),而车辆控制组只提供食物和水。对照组和肝毒性大鼠随机分为两组(n = 6)。标准组给予水飞蓟素(50 mg/kg b.w.;p.o.),共16天;处理组分别以200 mg/kg b.w.p.o. / d的剂量给药,连续16 d。结果乙醇提取物在200 mg/kg体重剂量下对血清SGPT、SGOT、GGTP和SALP具有显著的保护性降低作用。200 mg/kg (b.w.)乙醇提取物对胆红素和脂质过氧化物酶(LPO)有明显的抑制作用。对CCl4致肝毒性动物的TP、GSH、SOD和CAT水平的降低,在加药后显著升高。肝脏的组织病理学研究也支持了金针叶的保肝作用。结论生化实验结果表明,金合欢乙醇提取物对肝脏的保护作用明显优于金合欢。
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引用次数: 27
Hibiscus tiliaceus: A possible immunomodulatory agent 木槿:一种可能的免疫调节剂
Pub Date : 2013-07-01 DOI: 10.1016/j.jopr.2013.05.023
Guduru Rajeswari , Balugari Priyanka , R.E. Amrutha , Cuddapah Rajaram , Rupesh S. Kanhere , Sadhu Nelson Kumar

Objective

The objective of the study is to evaluate the immunomodulatory effect of methanolic leaf extract of Hibiscus tiliaceus (MLHT) in pyrogallol induced immunosuppressed Wistar rats.

Methods

The methanolic extract of leaves of H. tiliaceus was administered orally at the dosage levels of 250 mg/kg/day and 500 mg/kg/day b.w in Wistar rats for 28 days. The assessment of immunomodulatory activity, humoral and cellular immunity was studied by hemagglutination antibody (HA) titer, delayed type hypersensitivity (DTH), Neutrophil adhesion test and carbon clearance test. In order to induce immunosuppression in rats pyrogallol (100 mg/kg/day, p.o.) is used and septilin syrup (1ml/100 g/day, p.o.) used as standard as it is immunostimulating agent. Hematological and biochemical were estimated by standard methods.

Results

Oral administration of MLHT showed a significant increase in the production of circulating antibody titer in response to sheep red blood cells (SRBCs). A significant (P < 0.001) increase in both primary and secondary HA titer was observed when compared to control group, whereas in H. tiliaceus showed significant (P < 0.001) increase in HA titer. MLHT significantly (P < 0.001) potentiated the DTH reaction by facilitating the footpad thickness response to SRBCs in sensitized rats. Also MLHT evoked a significant (P < 0.001) increase in percentage neutrophil adhesion to nylon fibers and phagocytic activity. It also enhanced the production of RBC, WBC and hemoglobin. It does not much affect the biochemical parameters.

Conclusion

An oral administration of the MLHT showed immunomodulatory effect in Wistar rats in a dose dependent manner. From the results obtained and reported phytochemical studies H. tiliaceus has a significant effect on both humoral and cellular immunity in experimental animals, this may be attributed to the polyphenols and flavonoid content of the plant extract.

目的探讨木槿叶甲醇提取物(MLHT)对邻苯三酚诱导免疫抑制Wistar大鼠的免疫调节作用。方法采用Wistar大鼠分别以250 mg/kg/d和500 mg/kg/d灌胃给药28 d。采用血凝抗体(HA)滴度、延迟型超敏反应(DTH)、中性粒细胞粘附试验和碳清除试验评价免疫调节活性、体液免疫和细胞免疫。以邻苯三酚(100mg /kg/day, p.o.)和septilin糖浆(1ml/ 100g /day, p.o.)作为免疫刺激剂诱导大鼠免疫抑制。血液学、生化指标按标准方法测定。结果口服MLHT可显著提高绵羊红细胞(srbc)对血液循环抗体滴度的影响。P <0.001)原发性和继发性血凝素滴度与对照组相比均升高,而在H. tiliaceus中则显示显著(P <0.001)血凝素滴度升高。MLHT显著(P <0.001)通过促进srbc对致敏大鼠足垫厚度的反应来增强DTH反应。MLHT也诱发了显著的(P <0.001)中性粒细胞粘附在尼龙纤维上的百分比和吞噬活性增加。它还能促进红细胞、白细胞和血红蛋白的产生。它对生化参数影响不大。结论口服多酚对Wistar大鼠有一定的免疫调节作用,且呈剂量依赖性。从所获得的结果和已报道的植物化学研究来看,铁莲属植物对实验动物的体液和细胞免疫都有显著的影响,这可能归因于植物提取物的多酚和类黄酮含量。
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引用次数: 2
Antioxidant potential of the flowers of Caesalpinia pulcherrima, Swartz in an in vitro system subjected to oxidative stress 氧化应激条件下紫花苜蓿花的抗氧化能力研究
Pub Date : 2013-07-01 DOI: 10.1016/j.jopr.2013.07.026
S.T. Yamuna , P.R. Padma

Background

Oxidative stress leads to various pathological conditions including cancer. Antioxidant enzymes such as superoxide dismutase and catalase represent the cell defense mechanism for preventing oxidative damage. Recently many studies have focused on finding natural antioxidants, especially of plant origin for the treatment of oxidative stress associated diseases. The pharmacological and therapeutic properties of plants are attributed to the ability of antioxidants in them to scavenge free radicals.

Objective

In the present study, goat liver was selected as an in vitro model to determine the antioxidant effects of the three flowers (orange, pink and yellow) of Caesalpinia pulcherrima both in the presence and the absence of a standard oxidant (H2O2). The enzymic antioxidants (catalase, peroxidase, superoxide dismutase, glutathione reductase and glutathione S-transferase) and the non-enzymic antioxidants (vitamins A, C, E and reduced glutathione) were analysed.

Results

Treatment with hydrogen peroxide reduced the antioxidant levels in goat liver slices which were improved on co-treatment with the flower extracts, which proved the antioxidant efficacy of the flowers.

Conclusion

Our findings showed that the methanolic extract of the flowers of C. pulcherrima exhibits significant antioxidant activity against H2O2-induced oxidative stress in goat liver model.

氧化应激可导致包括癌症在内的多种病理状况。抗氧化酶如超氧化物歧化酶和过氧化氢酶代表了防止氧化损伤的细胞防御机制。近年来,许多研究都集中在寻找天然抗氧化剂,特别是植物来源的抗氧化剂来治疗氧化应激相关疾病。植物的药理和治疗特性归因于其抗氧化剂清除自由基的能力。目的以羊肝为体外模型,研究在标准氧化剂(H2O2)存在和不存在的情况下,羊肝三种花(橙、粉、黄)的抗氧化作用。分析了酶抗氧化剂(过氧化氢酶、过氧化物酶、超氧化物歧化酶、谷胱甘肽还原酶和谷胱甘肽s -转移酶)和非酶抗氧化剂(维生素A、C、E和还原性谷胱甘肽)。结果过氧化氢处理降低了山羊肝片的抗氧化水平,与花提取物共处理后抗氧化水平提高,证明了花的抗氧化作用。结论本研究结果表明,山参花甲醇提取物对h2o2诱导的山羊肝脏氧化应激具有明显的抗氧化活性。
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引用次数: 6
Chronic effects of anti-Alzheimer's drug, Galantamine hydrobromide on cholinergic system of mice brain 抗阿尔茨海默病药物氢溴酸加兰他敏对小鼠脑胆碱能系统的慢性影响
Pub Date : 2013-07-01 DOI: 10.1016/j.jopr.2013.06.010
Yellamma Kuna , Nirmala Kumari Borra

Objectives

The present study emphasizes the prolonged effects of an anti-Alzheimer's drug, Galantamine hydrobromide (GHB) on morphometric, behavioural and cholinergic system in mice in the absence of the disease, AD.

Methods

One month old male albino mice, Mus musculus (20 ± 2 g) were selected as experimental model and GHB as the test drug. The ED50 dose (5 mg/kg body weight) was given to experimental mice once in a day up to 180 days continuously.

Results

Observations on the morphometric aspects such as weight, size and also changes in the behaviour pattern of both control and experimental mice were recorded with help of the Morris water maze technique. Various constituents of the cholinergic system viz. acetylcholine content and acetylcholinesterase level were estimated in different regions of brain such as Olfactory Lobe, Hippocampus, Cerebral Cortex, Cerebellum, Pons-medulla and Spinal cord on selected days during the entire treatment schedule lasting for 180 days through standard biochemical assay techniques. From the results, it was evident that GHB exerted severe perturbations in the cholinergic system in all regions of brain on chronic exposure, thus eventually leading to behavioural changes.

Conclusions

From this, it was concluded that GHB, even though exerted positive effects on all the above mentioned parameters which were of course short-lived and during later stages, GHB exerted ill effects. In view of this, particularly, children are cautioned not to consume indiscriminately any kind of memory enhancing drugs or any formulated health drinks containing these chemicals either directly or indirectly for improvement of their cognitive skills.

目的本研究强调抗阿尔茨海默病药物氢溴化加兰他明(GHB)对无AD小鼠形态计量学、行为学和胆碱能系统的长期影响。方法以1月龄雄性白化小鼠小家鼠(20±2 g)为实验模型,GHB为试验药物。实验小鼠每天1次给予ED50剂量(5 mg/kg体重),连续给予180天。结果采用Morris水迷宫技术对对照组和实验组小鼠的体重、体型及行为模式的变化进行了形态学观察。在整个180天的治疗过程中,通过标准的生化测定技术,在选定的日子里,测定了脑不同区域(如嗅叶、海马、大脑皮层、小脑、脑髓和脊髓)胆碱能系统的各种成分,即乙酰胆碱含量和乙酰胆碱酯酶水平。从结果来看,很明显GHB在慢性暴露下对大脑所有区域的胆碱能系统产生严重的扰动,从而最终导致行为改变。结论GHB对上述各参数均有积极作用,但作用时间较短,在后期产生不良影响。鉴于此,尤其要告诫儿童不要不加选择地饮用任何一种增强记忆的药物或任何含有这些化学物质的配方健康饮料,无论是直接还是间接地提高他们的认知能力。
{"title":"Chronic effects of anti-Alzheimer's drug, Galantamine hydrobromide on cholinergic system of mice brain","authors":"Yellamma Kuna ,&nbsp;Nirmala Kumari Borra","doi":"10.1016/j.jopr.2013.06.010","DOIUrl":"10.1016/j.jopr.2013.06.010","url":null,"abstract":"<div><h3>Objectives</h3><p>The present study emphasizes the prolonged effects of an anti-Alzheimer's drug, Galantamine hydrobromide (GHB) on morphometric, behavioural and cholinergic system in mice in the absence of the disease, AD.</p></div><div><h3>Methods</h3><p>One month old male albino mice, <strong><em>Mus musculus</em></strong> (20 ± 2 g) were selected as experimental model and GHB as the test drug. The ED<sub>50</sub> dose (5 mg/kg body weight) was given to experimental mice once in a day up to 180 days continuously.</p></div><div><h3>Results</h3><p>Observations on the morphometric aspects such as weight, size and also changes in the behaviour pattern of both control and experimental mice were recorded with help of the Morris water maze technique. Various constituents of the cholinergic system viz. acetylcholine content and acetylcholinesterase level were estimated in different regions of brain such as Olfactory Lobe, Hippocampus, Cerebral Cortex, Cerebellum, Pons-medulla and Spinal cord on selected days during the entire treatment schedule lasting for 180 days through standard biochemical assay techniques. From the results, it was evident that GHB exerted severe perturbations in the cholinergic system in all regions of brain on chronic exposure, thus eventually leading to behavioural changes.</p></div><div><h3>Conclusions</h3><p>From this, it was concluded that GHB, even though exerted positive effects on all the above mentioned parameters which were of course short-lived and during later stages, GHB exerted ill effects. In view of this, particularly, children are cautioned not to consume indiscriminately any kind of memory enhancing drugs or any formulated health drinks containing these chemicals either directly or indirectly for improvement of their cognitive skills.</p></div>","PeriodicalId":16787,"journal":{"name":"Journal of Pharmacy Research","volume":"6 7","pages":"Pages 714-719"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.jopr.2013.06.010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78408342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Phenolic content of Ruprechtia salicifolia leaf and its immunomodulatory, anti-inflammatory, anticancer and antibacterial activity 水杨叶酚类物质含量及其免疫调节、抗炎、抗癌和抗菌活性
Pub Date : 2013-07-01 DOI: 10.1016/j.jopr.2013.07.015
Eman G. Haggag, Mohamed I.S. Abdelhady, Amel M. Kamal

Objectives

This work aimed to isolate phenolics from leaves of Ruprechtia salicifolia and evaluate its immunomodulatory, anti-inflammatory, anticancer and antibacterial activity.

Methods

80% MeOH leaf extract was subjected to chromatographic separation, structures of the isolated compounds were established by different chromatographic and spectral techniques UV, MS, 1H and 13C NMR. Immunomodulatory was evaluated through RAW 264.7 macrophages proliferation by MTT assay. Anti-inflammatory was evaluated by inhibition of NO and TNF-α factor generation in LPS-stimulated cells through bicinchoninici acid assay and ELISA assay, respectively. Cytotoxicity estimated through Hep-G2, MCF-7 and HCT-116 cell lines measured by MTT assay. Antibacterial activity tested by agar diffusion method.

Results

Eleven known phenolic compounds were isolated for the first time from this species including five flavonoid glycosides viz; Rutin 3, quercetin 3-O-arabinoglucoside 4, apigenin 7-O-β-d-glucoside 5, quercetin 3-O-α-l-arabinofuranoside 6 and isoquercetin 7 along with four aglycones viz; kaemferide 8, apigenin 9, quercetin 10 and naringenin 11 and two phenolic acids; caffeic 1 and gallic 2. Compounds 5 showed the most activity increasing macrophage proliferation implying immunomodulatory activity. 80% MeOH extract, 4, 5 and 11 inhibited nitrite oxide by 68.19%, 52.95%, 20.33% and 15.22%, respectively and TNF-α generation by 70.82%, 29.88%, 13.13% and 6.14%, respectively in LPS-stimulated cells implying anti-inflammatory activity. 80% MeOH leaf extract and the tested compounds 4 and 5 were safe possessing no cytotoxic activity against hepatocellular carcinoma (Hep-G2), breast adenocarcinoma (MCF-7) and colon carcinoma (HCT-116), while Compound 11 had cytotoxicity against only HCT-116 cells (IC50 = 27.67 μg/ml). Also 80% MeOH leaf extract showed antibacterial activity against both G +ve and G −ve bacteria, moreover it inhibits growth of Klebsiella pneumonia strain, which is resistant to Ciprofloxacin broad-spectrum antibiotic.

Conclusions

R. salicifolia contain phenolics of immunomodulatory anti-inflammatory, cytotoxicity and antibacterial activity, giving R. salicifolia grate potential as a medicinal natural drug.

目的从水杨树叶中分离酚类物质,并评价其免疫调节、抗炎、抗癌和抗菌活性。方法对80%的MeOH叶提取物进行色谱分离,通过不同的色谱和光谱技术(UV、MS、1H和13C NMR)建立化合物的结构。MTT法检测RAW 264.7巨噬细胞增殖的免疫调节作用。分别通过双霉素酸法和ELISA法检测lps刺激细胞对NO和TNF-α因子生成的抑制作用。MTT法测定Hep-G2、MCF-7和HCT-116细胞株的细胞毒性。琼脂扩散法测定抗菌活性。结果首次从该属植物中分离到6个已知的酚类化合物,包括5个类黄酮苷类化合物;芦丁3、槲皮素3- o -阿拉伯葡萄糖苷4、芹菜素7- o -β-d-葡萄糖苷5、槲皮素3- o -α-l-阿拉伯葡萄糖苷6、异槲皮素7及4种糖苷元;山柰素8、芹菜素9、槲皮素10、柚皮素11和两种酚酸;咖啡因和没食子。化合物5对巨噬细胞增殖的促进作用最大,表明其具有免疫调节作用。80% MeOH提取物、4、5和11对lps刺激细胞中亚硝酸盐的抑制作用分别为68.19%、52.95%、20.33%和15.22%,对TNF-α的抑制作用分别为70.82%、29.88%、13.13%和6.14%。80% MeOH叶提取物和化合物4、5对肝细胞癌(Hep-G2)、乳腺癌(MCF-7)和结肠癌(HCT-116)均无细胞毒活性,化合物11仅对HCT-116细胞有细胞毒活性(IC50 = 27.67 μg/ml)。80% MeOH叶提取物对G +ve和G−ve菌均有抑菌活性,且对肺炎克雷伯菌生长有抑制作用,该菌对环丙沙星广谱抗生素具有耐药性。水杨花含有免疫调节、抗炎、细胞毒性和抗菌活性的酚类物质,具有天然药用价值。
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引用次数: 9
In silico drug docking and screening for the drug discovery of new tyrosinase inhibitors 对新型酪氨酸酶抑制剂进行药物对接和筛选
Pub Date : 2013-07-01 DOI: 10.1016/j.jopr.2013.06.021
Sapna S. Ingle, Chandrahas N. Khobragade

Aim

To investigate potent tyrosinase inhibitor by drug docking analysis.

Methods

The study involved the protein structure of tyrosinase of B. megaterium to investigate the drugs designed by Chem office and drug docking was performed by AutoDock to investigate QSAR activity of the drug.

Results

Tyrosinase is an important enzyme linked with disorders like Parkinson's, melanogenesis, and hyper pigmentation, and studies on selection tyrosinase inhibitor and its implication in drug therapy is an urgent need. We have investigated five drugs which showcased tyrosinase inhibitor activity when tested by QSAR analysis in AutoDock. Docking study was done with the tyrosinase of B. megaterium, and results highlighted potent binding affinity of the drugs with binding energy in the range of −06.00 kcal/mol. In view, designed drugs show potential as tyrosinase inhibitor and may be used further for study.

Conclusion

All five drugs docked successfully with binding energy in the range of −06.00 kcal/mol suggested significant results.

目的通过药物对接分析寻找有效的酪氨酸酶抑制剂。方法利用化学办公室设计的药物,对巨型白刺菌酪氨酸酶的蛋白质结构进行研究,并用AutoDock进行药物对接,考察药物的QSAR活性。结果酪氨酸酶是与帕金森病、黑色素形成、色素沉着等疾病相关的重要酶,迫切需要研究酪氨酸酶抑制剂的选择及其在药物治疗中的意义。我们研究了五种在AutoDock中通过QSAR分析显示酪氨酸酶抑制剂活性的药物。与巨芽孢杆菌的酪氨酸酶进行对接研究,结果表明药物具有较强的结合亲和力,结合能在−06.00 kcal/mol范围内。因此,所设计的药物具有作为酪氨酸酶抑制剂的潜力,并可用于进一步的研究。结论5种药物均成功对接,结合能均在- 06.00 kcal/mol范围内,效果显著。
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引用次数: 2
Novel validated stability-indicating UPLC method for the determination of Metoclopramide and its degradation impurities in API and pharmaceutical dosage form 稳定性指示UPLC测定原料药和制剂中甲氧氯普胺及其降解杂质的新方法
Pub Date : 2013-07-01 DOI: 10.1016/j.jopr.2013.07.004
Prathyusha Sowjanya , Palani Shanmugasundaram , Petla Naidu , Sanjeev Kumar Singamsetty

Aim

To develop a stability-indicating reversed phase ultra performance liquid chromatographic (RP-UPLC) method for the determination of related substances in Metoclopramide bulk drugs and pharmaceutical dosage form.

Method

The chromatographic separation was achieved using a Waters X-terra RP18 (150 × 4.6 mm), 3.5 μm particle size column using the gradient program with mobile phase consisting of solvent A: 30 mM monobasic sodium phosphate and 2.3 mM of pentane-1-sulphonic acid sodium salt (pH 3.0 buffer) and solvent-B (Acetonitrile). A flow rate of 1.2 mL/min and UV detector at 273 nm was used. The runtime was 18 min within which Metoclopramide and its four impurities, ACETYLMETO, ACMA, CLEE and ACME were well separated.

Results and discussion

The drug was subjected to stress conditions such as oxidative, acid & base hydrolysis, thermal and photolytic degradation. Metoclopramide was found to degrade significantly in photolytic, oxidative & thermal stress conditions and stable in acid, base, hydrolytic & humidity stress conditions. The major degradation impurities in oxidation and photolytic degradation were identified by LCMS. The degradation products were well resolved from the main peak and its impurities, thus proved the stability-indicating power of the method.

Conclusion

The developed method was validated as per ICH guidelines with respect to specificity, linearity, limit of detection, limit of quantification, accuracy, precision and robustness. The calibration curves obtained for the four impurities were linear over the range 0.062–3.040 μg/mL.

目的建立稳定指示反相超高效液相色谱法(RP-UPLC)测定甲氧氯普胺原料药及制剂中有关物质的方法。方法采用Waters X-terra RP18 (150 × 4.6 mm), 3.5 μm粒径柱,梯度分离,流动相为溶剂a: 30 mm一碱磷酸钠,2.3 mm戊烷-1-磺酸钠盐(pH 3.0缓冲液)和溶剂b(乙腈)。流速为1.2 mL/min,紫外检测器波长为273 nm。运行时间为18 min,甲氧氯普胺及其4种杂质ACETYLMETO、ACMA、CLEE和ACME分离效果良好。结果与讨论该药物经受氧化、酸、酸等应激条件;碱水解,热和光解降解。发现甲氧氯普胺在光解、氧化和氧化中降解显著;在酸、碱、水解等热应力条件下稳定;湿度压力条件。利用LCMS对氧化和光解降解中的主要降解杂质进行了鉴定。降解产物较好地从主峰及其杂质中分离出来,证明了该方法的稳定性指示能力。结论该方法在特异性、线性度、检出限、定量限、准确度、精密度、鲁棒性等方面均符合ICH标准。4种杂质在0.062 ~ 3.040 μg/mL范围内均呈线性关系。
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引用次数: 3
Identification and characterization of foodborne pathogen Listeria monocytogenes strain Pyde1 and Pyde2 using 16S rRNA gene sequencing 食源性致病菌单核增生李斯特菌Pyde1和Pyde2的16S rRNA基因测序及鉴定
Pub Date : 2013-07-01 DOI: 10.1016/j.jopr.2013.07.009
Acharya Nagarjun Pyde , P. Nagaraja Rao , Aditya Jain , Divya Soni , Shailesh Saket , Sheaza Ahmed , Sugunakar Vuree , Anuraj Nayarisseri

Aim

Listeria monocytogenes acts as a pathogen for humans and animals, mainly causing, neonatal sepsis, abortions in pregnant females and severe infections such as septicemia and meningoencephalitis in susceptible hosts. Current study was aimed to identify novel strains of L. monocytogenes from retail chicken, beef meat and seafood samples.

Methods

In order to identify the strain, extraction and amplification of genomic DNA, 16S rRNA sequence analysis was carried out. Phylogenetic trees were constructed using dnapars and dnaml available in Phylip. The secondary structures of 16S rRNA gene sequence were predicted using UNAFOLD, a Linux based software.

Results

The results obtained were found to be a novel foodborne pathogens, which was further named L. monocytogenes strain Pyde1 and L. monocytogenes strain Pyde2, after characterization the sequence of isolate was deposited in GenBank with accession numbers ‘KC852899’ and ‘KC852900’ respectively. The Gibb's free energy of the secondary structures of L. monocytogenes strain Pyde1 and Pyde2 were −275.60 and −282.20 kcal/mol seems to be more stable in the present investigation.

Conclusion

The described results of phylogenetic distinctiveness and phenotypic disparities indicate that strain 2b represents a novel strain of foodborne pathogens within L. monocytogenes species, for which the name L. monocytogenes strain Pyde1 and L. monocytogenes strain Pyde2 is proposed.

单核增生李斯特菌是人类和动物的病原体,主要引起新生儿败血症、孕妇流产和易感宿主败血症、脑膜脑炎等严重感染。本研究旨在从零售鸡肉、牛肉和海鲜样品中鉴定新的单核细胞增生乳杆菌菌株。方法为鉴定菌株,提取基因组DNA并扩增,进行16S rRNA序列分析。利用philip中提供的dnapars和dnaml构建了系统发育树。采用基于Linux的UNAFOLD软件预测16S rRNA基因序列的二级结构。结果鉴定结果为一种新型食源性病原菌,并将其命名为单核增生乳杆菌Pyde1菌株和单核增生乳杆菌Pyde2菌株,经鉴定后,分离物序列已存入GenBank,登录号分别为KC852899和KC852900。单核增生乳杆菌Pyde1和Pyde2二级结构的吉布自由能分别为−275.60和−282.20 kcal/mol,在本研究中较为稳定。结论系统发育差异和表型差异表明菌株2b是单核增生乳杆菌种内的一种新型食源性致病菌,建议将其命名为单核增生乳杆菌Pyde1和Pyde2。
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引用次数: 8
Reverse vaccinology: An approach to search vaccine leads of Shigella sonnei 反向疫苗学:寻找索内志贺氏菌疫苗线索的一种方法
Pub Date : 2013-07-01 DOI: 10.1016/j.jopr.2013.07.030
Yatharth Anand , Sunil Pande , Dilip Gore

Aim

To develop vaccine leads by reverse vaccinology approach for Shigella sonnei.

Materials and methods

Study screened the coding proteins of S. sonnei as vaccine targets collected from NCBI website and filtered as cell surface proteins using programs such as SignalP 4.1, TMHMM, LipoP 1.0, PsortB and BLASTP.

Observation and results

In recent years due to rapid development in genome sequencing technology vaccine development program has achieved defined specificity and success. In our study, in total 63 cell surface proteins as vaccine leads were searched which are highly conserved among genus Shigella.

Conclusion

Study successfully used reverse vaccinology in search of vaccine leads in S. sonnei.

目的利用反向疫苗学方法开发sonnei志贺氏菌疫苗先导物。材料与方法本研究从NCBI网站收集sonnei沙门氏菌作为疫苗靶点的编码蛋白进行筛选,并使用SignalP 4.1、TMHMM、LipoP 1.0、PsortB和BLASTP等程序筛选为细胞表面蛋白。观察与结果近年来,由于基因组测序技术的快速发展,疫苗开发计划取得了明确的特异性和成功。在我们的研究中,共搜索到63种作为疫苗引线的细胞表面蛋白,这些蛋白在志贺氏菌属中高度保守。结论本研究成功地应用了反向疫苗学方法寻找sonnei链球菌的疫苗线索。
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引用次数: 4
期刊
Journal of Pharmacy Research
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