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【目的】基于网络药理学及分子对接技术研究黄芪调控仔猪肠道菌群失调性腹泻的有效活性成分及其作用机制。【方法】从TCMSP数据库搜集黄芪中药化合物成分,并获取其潜在靶点。利用GeneCards和OMIM数据库搜集肠道菌群失调性腹泻(flora imbalance diarrhea)的作用靶点,将两者预测的潜在作用靶点进行映射,获得共同作用靶点。运用STRING数据库构建靶点蛋白-蛋白相互作用(PPI)关系,用Cytoscape_3.8.0软件对其网络进行拓扑分析,用DAVID数据库对共同作用靶点进行富集分析,用AutoDuck_4.2.6软件对其核心成分与核心靶点进行分子对接。【结果】黄芪含有11个调控仔猪肠道菌群失调性腹泻核心成分,其对应靶点基因65个,疾病靶点854个,交集靶点25个。PPI网络中显示肿瘤坏死因子(TNF)、转录因子AP-1(JUN)、半胱氨酸蛋白酶-3(CASP3)、白细胞介素-6(IL6)、NF-κB抑制剂α(NFKBIA)、IL1B、IL10、细胞肿瘤抗原p53(TP53)、过氧化物酶体增殖物激活受体γ(PPARG)、C-C基序趋化因子2(CCL2)为关键靶点。GO功能和KEGG通路富集分析发现,黄芪有效成分主要通过美国锥虫病、炎症性肠病、阿米巴病、细胞因子-细胞因子受体相互作用、A型流感、疟疾、T细胞受体信号通路、沙门菌感染等信号通路参与转录调控、免疫反应、细胞对脂多糖的反应等生物过程。分子对接结果显示,槲皮素、山奈酚、芒柄花素等核心成分与TNF、IL1B等关键靶点结合紧密,亲和力较好。【结论】黄芪可能通过槲皮素、山奈酚、芒柄花素等主要活性成分作用于TNF、IL1B等靶点,通过参与美国锥虫病、炎症性肠病、疟疾、T细胞受体信号通路、沙门菌感染等信号通路进而治疗仔猪肠道菌群失调性腹泻。 相似文献
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本研究旨在基于网络药理学研究蒲公英抗氧化功能的物质基础和潜在作用机制，并对以蒲公英为原料开发功能性植物提取物饲料添加剂提供指导。通过HERB本草组鉴数据库、TCMSP数据库和SwissTargetPrediction网页工具筛选蒲公英中的活性成分以及潜在作用靶点，使用SwissADME工具计算活性成分的理化性质，从GeneCards数据库中获得与抗氧化相关的目的基因，使用Cytoscape和STRING数据库构建化合物-靶点-功能、化合物-靶点-通路可视化网络和蛋白质-蛋白质相互作用(PPI)网络，通过DAVID数据库进行基因本体论(GO)、京都基因和基因组百科全书(KEGG)途径富集分析，通过ABTS法和FRAP法对蒲公英不同提取组分进行了体外抗氧化活性测定。结果显示：筛选到活性成分28个、化合物预测靶点296个、抗氧化靶点1 371个和交集靶点135个。理化性质计算显示，活性成分中大部分为水溶性。蛋白质互作分析表明，JUN、VEGFA、SRC、HSP90AA1和MMP9等20个关键蛋白可能在抗氧化功能中发挥关键作用。GO和KEGG富集分析表明，抗氧化功能可能与血管内皮生长因子通路、... 相似文献
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【目的】 通过网络药理学对丹参、益母草、黄芩、连翘组成的中药复方进行分析,研究其有效成分治疗奶牛子宫内膜炎的潜在作用靶点,并对靶点作用通路的机制进行阐述。【方法】 利用TCMSP数据库筛选药物成分作用靶点,通过NCBI、GeneCard、geneMap、TTD、DrugBank查找奶牛子宫内膜炎的相关靶点,筛选出药物成分靶点与奶牛子宫内膜炎相关靶点的共有基因靶点,作为该中药复方治疗奶牛子宫内膜炎的预测靶点,并上传到STRING数据库建立蛋白互作(PPI)网络,通过Cytoscape 3.8.2软件根据连接度对PPI网络进行筛选,找到其核心靶点。运用Metascape数据库对核心靶点进行GO功能与KEGG通路富集分析。【结果】 从该中药复方中筛出有效活性成分133种,主要包括槲皮素、山奈酚、黄芩素、丹参酮ⅡA等,通过药物成分找到对应靶点蛋白292个,通过数据库找到奶牛子宫内膜炎的相关靶点130个,筛出中药复方治疗奶牛子宫内膜炎的预测靶点24个,其中核心靶点7个,包括肿瘤坏死因子、蛋白激酶、前列腺素内过氧化物合酶2等。GO功能富集分析得到生物过程20个条目、分子功能6个条目及细胞组分6个条目,生物过程包括脂多糖的反应、白细胞-细胞黏附的正向调节、对无机物的反应等;分子功能包括信号受体活性调节、转录辅激活子的结合、血红素结合等;细胞组分包括细胞膜筏、薄膜侧面、颗粒分泌腔等。KEGG通路富集分析涉及20个基因,参与调控的通路有9条,其中涉及基因较多的包括AGE-RAGE信号通路、癌症蛋白聚糖通路、血流剪切应力与动脉粥样硬化通路及Th17细胞分化通路。【结论】 该中药复方可能是通过调控肿瘤坏死因子、蛋白激酶、前列腺素内过氧化物合酶2等靶点,通过参与AGE-RAGE信号通路及Th17细胞的分化对奶牛子宫内膜炎产生治疗作用。 相似文献
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【目的】运用网络药理学和分子对接技术探讨归芪益母口服液治疗猪气虚血瘀证的有效活性成分及其作用机理。【方法】通过中药系统药理学数据库与分析平台(TCMSP)、中医药综合数据库(TCMID)获取归芪益母口服液主要活性成分及其靶点,通过GeneCards、OMIM和Malacards数据库获得母猪气虚血瘀证的作用靶点。使用Cytoscape 3.9.0软件构建药物-成分-靶点网络图,利用STRING数据库和Cytoscape 3.9.0软件构建靶点蛋白-蛋白互作(PPI)网络图,采用DAVID数据库对共同作用靶点进行GO功能和KEGG信号通路富集分析。通过Autodock Tools 1.5.7软件对其核心成分与核心靶点进行分子对接。【结果】归芪益母口服液筛选得到主要的有效活性成分为槲皮素、山奈酚和异鼠李素,其对应76个关键作用靶点,6 335个疾病靶点,41个交集靶点;PPI网络显示肿瘤坏死因子(TNF)、白介素-6(IL6)和IL10为关键靶点。GO功能富集分析共筛选出12条目,其中生物过程7条目,包括免疫应答、STAT蛋白酪氨酸磷酸化的正向调节、对糖皮质激素的反应等;细胞组分2条目,包括细胞外组分和细胞外空隙;分子功能3条目,包括细胞因子、生长因子活性和IL2受体结合。KEGG信号通路富集分析显示,归芪益母口服液主要通过细胞因子受体互作、JAK-STAT信号通路、PI3K-Akt信号通路发挥作用。分子对接结果显示,槲皮素、山奈酚、异鼠李素等核心成分与母猪气虚血瘀证关键靶点的结合能均＜0 kJ/mol。【结论】归芪益母口服液可能通过槲皮素、山奈酚、异鼠李素等主要活性成分作用于核糖体结合蛋白(RPN1)、胰核糖核酸酶(RNASE1)、血管生成蛋白抑制因子1(RNH1)等靶点,通过参与细胞因子受体互作、JAK-STAT信号通路、PI3K-Akt信号通路等治疗猪气虚血瘀证。 相似文献
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为了探究赪桐潜在防治奶牛乳房炎的作用机制,试验基于网络药理学,利用TCMSP数据库收集赪桐潜在抗奶牛乳房炎致病菌活性成分,在GeneCards数据库中收集与奶牛乳房炎致病菌相关的作用靶点。利用Cytoscape 3.8.2软件绘制赪桐活性成分与致病菌靶点网络图,通过将筛选到的致病菌靶点导入STRING数据库构建致病菌靶点相互作用网络,最后利用DAVID、Metascape数据库对各靶点进行GO功能注释和KEGG富集分析。结果表明:共得到赪桐潜在抗奶牛乳房炎活性成分11个,对应致病菌靶点86个;共得到97个节点,174条相互作用关系;去除游离的病菌靶点后,最终得到31个关键作用靶点。GO功能注释得到312条基因数量较大的功能注释,主要涉及细胞膜、原子核、蛋白质结合、基于转录正向调控过程、信号转导过程等。KEGG富集分析主要涉及蛋白结合通路、酶结合通路、ATP结合通路等。说明基于网络药理学预测,赪桐可通过多种活性成分作用于不同靶点,并通过调控炎症反应、氧化还原反应等过程达到防治奶牛乳房炎的目的。 相似文献
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基于网络药理学的方法探讨乳难中药共同代谢通路。遴选2020年版《中国药典》中具有下乳或通乳作用的中药材，应用中药系统药理学分析平台(TCMSP)和中国知网筛选中药材的全部活性成分，并使用TCMSP和Swiss Target Prediction分析平台查询相关靶点。借助UniPort数据库进行基因标准化查询。应用GeneCards数据库和OMIM数据库筛选乳难疾病的靶点；通过在线Venny获得药物疾病的共同靶点。将获得的结果导入Cytoscape软件中进行可视化分析，构建PPI网络，筛选核心靶点。采用Metascape数据库对核心靶点进行GO分析和KEGG相关通路富集。共获得有效活性成分58种，潜在靶点336个，疾病靶点2175个，得到共同靶点158个。GO分析得到生物过程947个，细胞组分29个，分子功能54个，KEGG得到IL-17信号通路、肿瘤坏死因子信号通路等119条通路。利用网络药理学分析平台可对治疗乳难中药的有效成分靶点、乳难疾病靶点以及相关信号通路进行预测，为进一步研究探讨乳难中药共同代谢通路提供了重要依据。 相似文献
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【目的】运用网络药理学和分子对接方法研究山楂调节氧化应激的活性成分及潜在作用机制。【方法】通过TCMSP数据库检索山楂的化学成分及其作用靶点;在Uniprot数据库中对所得靶点进行标准基因名转化。利用GeneCards和OMIM数据库筛选氧化应激相关靶点。通过Venny 2.1.0软件获得山楂和氧化应激的交集靶点;借助STRING数据库和Cytoscape 3.8.0软件构建山楂-主要活性成分-靶点网络和蛋白-蛋白互作网络,筛选核心靶点,随后利用AutoDockTools 1.5.7和AutoDock Vina 1.1.2软件进行分子对接。应用DAVID数据库进行GO功能富集和KEGG通路注释分析,结果由Pymol软件进行可视化作图。【结果】筛选获得槲皮素、山奈酚、异鼠李素、豆甾醇、谷甾醇、表儿茶素等山楂的主要活性成分。基于主要活性成分和氧化应激分别筛选获得185和9 647个靶点,其中山楂与氧化应激交集靶点共171个,如丝氨酸/苏氨酸蛋白激酶AKT(serine/threonine-protein kinase AKT,AKT1)、细胞肿瘤抗原p53(cellular tumor a... 相似文献
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《中国畜牧兽医》2020,(5)
试验旨在基于网络药理学方法探究中药黄连主要活性成分的抗菌作用机制。从TCMSP数据库筛选黄连有效成分及作用靶点,利用Uniprot数据库转化成相应靶点基因,将活性成分和靶点基因导入Cytoscape 3.6.1软件,构建活性成分-靶点网络图。再结合GeneCards数据库检索黄连抗菌相关靶点,将核心靶点基因上传至STRING平台,构建蛋白相互作用网络,最后,利用DAVID数据库对关键靶点进行GO生物学过程分析和KEGG通路富集分析。结果显示,黄连9种有效成分作用于105个抗菌靶点参与22条生物学过程(生物过程18条、分子功能3条、细胞组成1条)和19条相关信号通路。其中黄连的主要有效成分为槲皮素、氢化小檗碱、氧化小檗碱、小檗碱和巴马汀等;抗菌作用靶点为IL2、VCAM1、STAT1、NOS2、TGFB1、CASP9、MMP1、NFKBIA和CXCL10等;参与的生物学过程主要包括炎症反应、RNA聚合酶Ⅱ启动子转录的正调节、对脂多糖的反应、凋亡过程的负调节、细胞黏附等;主要作用于Toll样受体信号通路、肿瘤坏死因子(TNF)信号通路、NF-κB信号通路等。本试验结果表明,黄连可能通过槲皮素、小檗碱、巴马汀等活性成分作用于IL2、VCAM1、STAT1等关键靶标参与Toll样受体信号通路、TNF信号通路联合发挥抗菌作用,充分体现了黄连多成分、多靶点、多通路的抗菌作用机制,为进一步深入阐明黄连抗菌机制提供理论参考。 相似文献
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基于网络药理学探究中药黄连抗菌作用机制 总被引：1，自引：0，他引：1
试验旨在基于网络药理学方法探究中药黄连主要活性成分的抗菌作用机制。从TCMSP数据库筛选黄连有效成分及作用靶点，利用Uniprot数据库转化成相应靶点基因，将活性成分和靶点基因导入Cytoscape 3.6.1软件，构建活性成分-靶点网络图。再结合GeneCards数据库检索黄连抗菌相关靶点，将核心靶点基因上传至STRING平台，构建蛋白相互作用网络，最后，利用DAVID数据库对关键靶点进行GO生物学过程分析和KEGG通路富集分析。结果显示，黄连9种有效成分作用于105个抗菌靶点参与22条生物学过程（生物过程18条、分子功能3条、细胞组成1条）和19条相关信号通路。其中黄连的主要有效成分为槲皮素、氢化小檗碱、氧化小檗碱、小檗碱和巴马汀等；抗菌作用靶点为IL2、VCAM1、STAT1、NOS2、TGFB1、CASP9、MMP1、NFKBIA和CXCL10等；参与的生物学过程主要包括炎症反应、RNA聚合酶Ⅱ启动子转录的正调节、对脂多糖的反应、凋亡过程的负调节、细胞黏附等；主要作用于Toll样受体信号通路、肿瘤坏死因子（TNF）信号通路、NF-κB信号通路等。本试验结果表明，黄连可能通过槲皮素、小檗碱、巴马汀等活性成分作用于IL2、VCAM1、STAT1等关键靶标参与Toll样受体信号通路、TNF信号通路联合发挥抗菌作用，充分体现了黄连多成分、多靶点、多通路的抗菌作用机制，为进一步深入阐明黄连抗菌机制提供理论参考。 相似文献
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为了基于网络药理学方法探究芪姜粉治疗猪脾胃虚寒型腹泻的效果和作用机制，本试验借助中药系统药理学分析平台(TCMSP)对芪姜粉进行药效物质基础分析及作用靶点预测，通过GeneCards和OMIM数据库检索与腹泻相关的疾病靶点，并用Uniprot数据库进行校正；用Cytoscape 3.7.2软件构建“芪姜粉—活性成分—靶点网络图”“芪姜粉—活性成分—腹泻—靶点网络图”,利用String数据库构建蛋白相互作用(PPI)网络；在DAVID数据库中进行基因本体(GO)功能富集分析和京都基因与基因组百科全书(KEGG)通路富集分析，以预测其作用机制。结果显示，活性成分—靶点网络包含20个活性成分和相应靶点159个，关键靶点涉及PPARG、PTGS2、PTGS1、NOS2等；PPI核心网络包含101个蛋白，关键蛋白涉及TNF、TP53、IL-6、IL-8等；GO功能富集分析得到GO条目272个(P<0.05),其中生物过程(BP)条目198个，分子功能(CC)条目23个，细胞组成(MF)条目51个；KEGG通路富集筛选得到119条信号通路(P<0.05),相关度较高的疾病依次为癌症、乙... 相似文献
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基于我国农药信息网数据和新修订的《食品安全国家标准 食品中农药最大残留限量》（GB 2763 — 2021）中葡萄相关指标,结合葡萄生产实际,对我国葡萄上农药登记的现状及生产中农药的应用情况进行梳理,指出了存在的问题,分析了产生问题的原因,提出了相应建议,以期为我国葡萄的安全生产提供参考。 相似文献
12.
MV Root Kustritz 《Reproduction in domestic animals = Zuchthygiene》2012,47(Z4):214-222
Surgical sterilization of dogs and cats is a well-accepted measure for population control in some countries, but is considered unethical as an elective surgery in other countries. This is a review of what is known regarding positive and negative effects of gonadectomy surgery on individual animals and on societal management of unowned dog and cat populations. 相似文献
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K Fegeros G Papadopoulos G Zervas E Ziras B Cafantaris 《Archives of Animal Nutrition》1989,39(11):921-931
Two experiments were conducted to evaluate the effects of sugar beet molasses (0, 8 and 16%) with or without lasalocid sodium (33 ppm) on rumen liquor and blood parameters of sheep, and on fattening reared Karagouniko breed lambs. In Expt. 1 six adult Karagouniko fistulated wethers were fed six different pelleted diets. The results showed that lasalocid decreased (P less than 0.01) total VFAs concentration in the rumen (7.1%) by reducing (P less than 0.001) acetic, n-butyric and iso-valeric acids while increased (P less than 0.001) propionic acid concentrations. The same trends were observed in molar proportions of the individual VFAs. The total VFAs production was also depressed by 13.75% when molasses were used at the level of 16%. No interaction among the main treatments was observed with the exception of L X M with 16% molasses where the propionic acid concentration decreased, and those of butyric and iso-valeric acids increased. Lasalocid did not alter the mean values of rumen liquor pH and ammonia nitrogen concentration while molasses increased the later parameter. No significant differences on dietary protein degradability were observed among treatments. Lasalocid reduced the beta-HBA concentration by 13% in the blood while molasses increased it (P less than 0.001). Free fatty acids' concentration was decreased by the molasses inclusion to the diets, while lasalocid didn't alter blood glucose concentration. Finally, the number of protozoa in the rumen liquor was reduced by 49 and 70% at 0 and 5 hours post feeding respectively with the addition of lasalocid to the diets, regardless of the use of molasses. In Expt. 2 utilized 86 weaned male Karagouniko fattening lambs, with initial mean LW 13 kg, for 60 days. They were assigned to six groups and fed ad libitum with diets of the same composition as in Exp 1. Lasalocid increased the growth rate by 8.6%, reduced feed consumption by 4.8% (P less than 0.005) and improved feed conversion by 11.8%. Molasses also improved growth rate by 16-34% and increased feed consumption by 15-22%. The interaction of L X M to feed consumption was significant (P less than 0.001). None of the treatments had an effect on carcass characteristics. Finally lasalocid showed its positive action when it was used in combination with molasses in ruminants' diets. 相似文献
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血根碱药理及毒理作用的研究进展 总被引：1，自引：0，他引：1
血根碱(sanguinarine)作为一种苯菲啶异喹啉类生物碱,具有抗菌、抗炎、抗氧化、抗肿瘤、改善肝功能及诱导细胞凋亡等作用,同时对肝脏、心脏等具有一定的毒性。作者就血根碱对细菌、真菌和癌细胞的药理作用及毒性作一综述,为该药在临床中的有效合理应用奠定基础。 相似文献
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Dr G. Milisits E. Kovács O. Pőcze J. Ujvári Zs. Taraszenkó G. Jekkel 《British poultry science》2010,51(2):289-295
1.?Using the so-called TOBEC (Total Body Electrical Conductivity) method, which allows the determination of egg composition in vivo, correlations between egg composition, hatchability and hatched chicks’ development were studied.
2.?A total of 1500 hen eggs (Ross-308) were measured by TOBEC, and eggs with extremely high (10%, n = 150), extremely low (10%, n = 150) and average (10%, n = 150) electrical conductivity values were chosen for further investigation.
3.?During the incubation period, it was observed that eggs with high electrical conductivity had a significantly higher mortality than eggs with low electrical conductivity.
4.?It was observed that both the increase in electrical conductivity at the same egg weight, and the increase in egg weight at the same electrical conductivity resulted in an increase in the hatching weight.
5.?It was found that the dry matter, protein and fat content of the chicks hatched from eggs with low electrical conductivity was higher at hatching than that of the chicks hatched from eggs with high electrical conductivity.
6.?At 42 d of age the liveweight of cocks and pullets hatched from eggs with low electrical conductivity was 3·2 and 8·2% higher than the liveweight of cocks and pullets hatched from eggs with high electrical conductivity.
7.?Because of the higher liveweight at slaughter, there was a significant superiority of the chicks hatched from eggs with low electrical conductivity in the case of the examined carcase traits at slaughter.
8.?Similar tendencies were found also in the ratios of carcase variables to liveweight, but the between group differences were not statistically significant in this case.
9.?Based on the results it was concluded that TOBEC seems to be a useful method for separating eggs with different composition.
10.?This could be a good starting point for further in vivo investigations in order to clarify the effect of egg composition on hatchability and further development. 相似文献
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A total of 260 New Zealand White growing rabbits were used to study the effect of diet on chemical composition of cecal contents and on production and composition of soft and hard feces. Eight diets varying in their acid detergent fiber (9.8% to 32.7%) and starch (13% to 30%) levels were evaluated. The diet affected (P less than .01) all the variables studied, except dry matter (DM) and molar proportions of volatile fatty acids on cecal contents. An increase of dietary crude fiber increased crude fiber level in cecal contents (from 11.58% to 26.53%). However, a relatively lower proportion of fibrous material was found in the cecal contents when rabbits were fed the more fibrous diets. This suggests that dietary fiber has a direct influence on the efficiency of particle separation in the digestive tract. Crude protein and volatile fatty acid concentrations of cecal contents decreased (from 30.14% to 19.65% and from 47.8 to 36.7 mmol/liter, respectively) when dietary crude fiber increased. This could be related to availability of energy to cecal microorganisms. Ammonia concentration of cecal contents was not affected by dietary crude fiber. Daily production of soft feces varied from 14.98 to 29.59 g DM/d, and the contribution of soft feces to total DM and to crude protein intake ranged from 10.6% to 15.0% and from 12.8% to 20.5%, respectively; these values were the smallest and the largest for the least and the most fibrous diets, respectively. From this study we conclude that dietary fiber has a major effect on the digestive processes in the rabbit and that dietary starch level has no influence on any of the variables studied. 相似文献
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Domestic stock on a farm 30 km north of Grahamstown were treated with an acaricide at regular intervals over a period of several years. This resulted in a marked reduction in all stages of development of Amblyomma hebraeum on kudu (Tragelaphus strepsiceros), scrub hares (Lepus saxatilis) and helmeted guinea fowl (Numida meleagris) which were on the farm compared with the burdens of similar animals in an adjacent nature reserve. The populations of free-living larvae of A. hebraeum on this farm and on another farm 10 km south of Grahamstown, on which the domestic stock were also regularly treated with acaricides, were markedly reduced when a comparison was made with the free-living populations in the adjoining nature reserves. 相似文献
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