基于网络药理学和分子对接探讨解毒通利方治疗肝纤维化的作用机制

目的 采用网络药理学和分子对接的方法探讨解毒通利方治疗肝纤维化(HF)的可能作用机制。方法 借助中药系统药理学数据库与分析平台(TCMSP)、本草组鉴(HERB)获得解毒通利方所有有效活性成分,通过TCMSP数据库将这些有效活性成分进行成分靶点预测,并与GeneCards数据库、PharmGkb数据库、TTD数据库、OMIM数据库和DrugBank数据库中HF疾病基因相关靶点使用R语言软件取交集,从而获得解毒通利方治疗HF的靶点;通过STRING绘制交集靶点的蛋白互作(PPI)网络,筛选核心蛋白;利用Cytoscape 3.8.0软件构建“中药—关键化合物—核心靶点”网络;运用R语言软件进行基因本体论(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,预测核心靶点的作用机制。最后,应用分子对接技术,将关键有效活性成分和PPI中核心蛋白进行分子对接。结果 共筛选解毒通利方药物活性化合物172种,作用靶点4 068个,构建PPI网络,运用“CytoNCA”插件筛选出IL6、AKT1、STAT1、RELA、MYC、FOS、STAT3、MAPK1、CCND1等19个核心蛋白...     

基于网络药理学和分子对接探讨裘氏二藤汤治疗慢性盆腔炎的机制

[目的] 基于网络药理学和分子对接方法,探讨二藤汤的有效成分治疗慢性盆腔炎的机制。[方法] 利用TCMSP和TCMID数据库筛选出二藤汤有效成分及其靶点,运用Uniprot数据库获取标准化的靶点名称,同时,利用Cytoscape3.7.2软件构建“药物-活性成分-靶点”网络。通过GeneCards、OMIM数据库收集慢性盆腔炎靶点,同时,利用Venny 2.1.0获取“药物-疾病”的交集靶点并绘制韦恩图,通过STRING平台构建PPI网络图,并运用Cytoscape 3.7.2软件中CytoNCA插件筛选关键靶点。利用Metascape数据库进行GO功能和KEGG通路的富集分析。最后,利用AutoDock Vina 1.1.2对关键靶点和活性成分进行分子对接。[结果] 通过筛选共获得231个活性成分,211个“药物-疾病”交集靶点;GO分析获得2538个条目,分别为2174个BP,233个MF及131个CC条目。KEGG分析得到209条信号通路;分子对接结果显示关键靶点与核心活性成分具有较好的结合活性。[结论]二藤汤通过多成分、多靶点、多通路治疗慢性盆腔炎。     

基于网络药理学和分子对接探讨二仙汤治疗卵巢早衰的作用机制

目的：对二仙汤治疗卵巢早衰（premature ovarian failure,POF）作用机制进行探讨。方法：基于网络药理学和分子对接的方法,通过检索TCMSP数据库获取二仙汤中各药物的活性成分;通过Gene Cards、OMIM、Pharm Gkb和Drugbank数据库收集卵巢早衰疾病靶点,将活性成分与疾病基因靶点取交集,得到二仙汤治疗卵巢早衰的预测靶点。采用Cytoscape 3.8.0构建“药物-成分-靶点-疾病”网络;通过STRING数据库和Cytoscape构建蛋白互作网络（PPI）及精简核心网络;运用R Studio软件对二仙汤治疗POF进行GO富集和KEGG通路富集分析。采用分子对接技术对“药物-成分-靶点-疾病”网络结果进行验证。结果：筛选出68个主要活性成分,涉及182个基因靶点,其中主要活性成分包括槲皮素（Quercetin）、木犀草素（Luteolin）、山柰酚（Kaempferol）等;核心靶点基因包括RB1、TP53、FOS、CDKN1A、ESR1、AKT1、MAPK1、TNF等;富集到GO生物过程（biological process,BP）2545条、...     

基于网络药理学和分子对接技术探讨解毒活血汤治疗新型冠状病毒肺炎的潜在作用机制

目的 运用网络药理学方法和分子对接技术探讨解毒活血汤治疗新型冠状病毒肺炎(COVID-19)多成分、多靶点、多通路的作用机制。方法 通过中药系统药理学数据库与分析平台(TCMSP)检索解毒活血汤中除生地黄外9味中药的活性成分及靶点,查阅文献筛选生地黄的活性成分,使用GeneCards数据库获取COVID-19的靶点,通过STRING数据库构建蛋白质-蛋白质相互作用(PPI)网络,利用Cytoscape 3.7.2软件构建药物-化合物-靶点网络,通过R软件的ClusterProfiler包对关键靶点进行基因本体(GO)富集分析和京都基因与基因组百科全书(KEGG)通路富集分析,最后对严重急性呼吸综合征冠状病毒2(SARS-CoV-2)3CL水解酶(Mpro)、血管紧张素转化酶Ⅱ(ACE2)及关键靶点与显著化合物进行分子对接。结果 解毒活血汤包含了10味中药、153个化合物和253个靶点,将解毒活血汤主要活性成分调控的靶点与COVID-19的治疗靶点取交集,得到51个潜在靶点,GO功能富集分析得到82个条目(P<0.05),KEGG通路富集分析筛选得到154条信号通路(P <0...     

基于网络药理学探究大泻心汤治疗肺癌的作用机制

目的 运用网络药理学方法探究大泻心汤治疗肺癌的作用机制。方法 通过中药系统药理学数据库与分析平台(TCMSP)获取大泻心汤中单味药的活性成分及其靶点。利用疗效药靶数据库(TTD)、DisGeNET数据库查找肺癌相关靶点,使用Cytoscape 3.7.2软件确定该复方治疗肺癌的关键靶标,绘制蛋白质-蛋白质相互作用(PPI)图,同时构建“中药-化合物-靶点-疾病”网络构建图。使用DAVID平台对共同靶点进行基因本体(GO)功能分析和京都基因与基因组百科全书(KEGG)信号通路富集分析,并使用Omicshare Tools进行可视化。结果 大泻心汤共筛选获得164个活性成分,与肺癌疾病靶点交集出154个共同靶点,通过筛选共同靶点得到27个关键靶点,主要为信号转导和转录活化因子3(STAT3)、丝氨酸/苏氨酸蛋白激酶1(AKT1)、丝裂原活化蛋白激酶1(MAPK1)及肿瘤抑制基因TP53等。GO功能分析显示与细胞氧化应激反应、核受体、转录因子调节等有关;KEGG信号通路富集分析得到173条信号通路,主要涉及乙型肝炎、糖尿病并发症中的AGE-RAGE信号通路、流体剪切应力与动脉粥样硬化、小细胞...     

基于网络药理学探讨苇茎汤治疗哮喘急性发作的作用机制

目的通过网络药理学探究苇茎汤治疗哮喘急性发作的潜在作用机制。方法使用TCMSP数据库筛选苇茎汤药物活性成分,使用Uniprot及TCMSP数据库查找药物活性成分及潜在靶点,运用Cytoscape构建"中药-活性成分-靶点"网络图。在Drug Bank、Gene Cards、TTD等数据库中搜索哮喘急性发作的疾病靶点,将苇茎汤药物活性靶点与哮喘急性发作的疾病靶点取交集,并制作韦恩图。借助String数据库及Cytoscape软件分析交集靶点的蛋白与蛋白相互作用,并绘制PPI图。运用的Cytoscape的MCODE及cytohubba插件探索药物-疾病交集靶点关系。运用Metascape分析平台探索交集靶点的GO、KEGG富集情况,使用在线绘图平台绘制GO富集分析图及KEGG动态气泡图。结果苇茎汤共有22个活性成分,获得54个药物活性靶点。搜索哮喘急性发作靶点827个,将药物-疾病靶点取交集,共有20个交集靶点,其中JUN、CHRM1、CASP8、PTGS2、TGFB1等为核心交集靶点。GO富集分析结果为:血液循环、调节离子传输、乙酰胆碱受体活性、蛋白质结构域特异性结合等。KEGG富集分析结果显示苇茎汤治疗哮喘急性发作主要与组织生长因子(TNF)、核转录因子κB(NF-κB)、神经受体-配体相互作用、PI3K-Akt、钙离子、NOD样受体等信号通路有关。结论苇茎汤可能通过控制炎症反应、缓解气道高反应及延缓气道重塑等方面治疗哮喘急性发作。     

基于网络药理学探讨“防风-白术”抗结直肠癌作用机制

目的基于网络药理学方法探讨“防风-白术”两药配伍治疗结直肠癌的潜在靶点及作用机制。方法通过中药系统药理学分析平台(CMSP)数据库检索“防风-白术”的主要活性成分、作用靶点;借助GeneCards及在线人类孟德尔遗传数据库(OMIM)数据库获得结直肠癌相关标靶点;运用Venny2.1.0绘制出防风-白术与结直肠癌的基因交集,并将交集基因导入STRING在线网站构建PPI网络;利用cytoscape 3.7.1软件构建化合物-靶点(基因)网络;运用DAVID数据库进行基因本体(GO)功能富集分析和基于京都基因与基因组百科全书(KEGG)通路富集分析。结果最终得到35个有效成分-疾病交集靶点;主要信号通路有靶点基因富集的蛋白功能主要包括诱导细胞凋亡、抑制细胞增殖、调节免疫等;     

网络药理学常见不同富集方法比较研究——以当归补血汤治疗贫血为例

目的:以当归补血汤治疗贫血为例比较常见网络药理学不同富集方法的差异,并对当归补血汤的活性成分和核心靶点进行分子对接,为后续网络药理学研究提供参考。方法:从TCMSP数据库、Uni Prot数据库、Gene Cards数据库获取当归补血汤活性成分、作用靶点及贫血相关靶点,用在线Venny 2.1.0平台对活性成分作用靶点和贫血靶点取交集,用Cytoscape 3.7.1绘制药物-活性成分-靶点-疾病网络。交集靶点导入STRING蛋白互作数据库构建PPI网络,取DC值的2倍中位数得到核心靶点。使用Auto Dock软件对活性成分和核心靶点进行分子对接、验证成分和靶点的结合性。用Metascape数据库、DAVID数据库、Cytoscape软件的Glue GO插件及R语言的“cluster Profiler”程序包对核心靶点进行基因本体论(gene ontology,GO)富集分析和京都基因与基因组百科全书(kyoto encyclopedia of genes and genomes,KEGG)通路分析,取KEGG通路分析结果前20条信号通路进行比较。结果:当归补血汤活性成分共22个,对应...     

基于网络药理学分析角药葛根-鹿衔草-羌活治疗颈椎病的作用机制

目的 采用网络药理学方法探讨角药葛根-鹿衔草-羌活治疗颈椎病的作用机制。方法 使用中药系统药理学数据库与分析平台筛选葛根、鹿衔草、羌活的主要有效活性成分及其作用靶点。采用CTD、GeneCards及OMIM数据库获取颈椎病的相关基因靶点,并将其与角药的有效活性成分作用靶点进行交集,获取共同靶点。针对共同靶点,构建“药物-成分-靶点-疾病”可视化网络,以及蛋白质-蛋白质互相作用(PPI)网络,同时进行基因本体论(GO)功能富集分析和京都基因和基因组百科全书(KEGG)通路富集分析。结果 共获得葛根-鹿衔草-羌活的有效活性成分28个及其靶点86个,与12 097个颈椎病相关基因靶点取交集后得到共同靶点72个。根据PPI网络筛选出白细胞介素6(IL-6)、半胱氨酸天冬氨酸蛋白酶3(Caspase3)、雌激素受体1(ESR1)等关键靶点蛋白。GO功能富集分析结果显示,共同靶点主要涉及核受体活性、转录因子活性/直接配体调节的序列特异性、类固醇激素受体活性等生物过程或功能;KEGG通路富集分析结果显示,葛根-鹿衔草-羌活治疗颈椎病的信号通路主要涉及丝裂原活化蛋白激酶(MAPK)信号通路、磷脂酰肌醇...     

基于网络药理学探讨二仙汤治疗乳腺增生症的潜在作用机制

目的：运用网络药理学的研究方法,分析二仙汤治疗乳腺增生症的潜在作用靶点和机制。方法：使用中药系统药理学数据库与分析平台（TCMSP）筛选二仙汤的有效活性成分及其作用靶点,利用GeneCards数据库检索乳腺增生症的相关靶点。映射疾病靶点与药物靶点,通过String数据库预测两者间关键靶点的相互作用,构建“药物-有效成分-作用靶点”网络图,并对关键靶点进行基因本体（GO）富集分析和京都基因和基因组百科全书（KEGG）富集分析,分析二仙汤治疗乳腺增生症的潜在作用机制。结果：共获得85个二仙汤有效成分,215个有效成分靶点,4 775个乳腺增生症靶点,有效成分与疾病交集靶点175个,蛋白质相互作用（PPI）核心网络包含10个靶点,并得出排名前10位的GO富集结果和排名前20位的KEGG富集结果。结论：二仙汤通过槲皮素、山柰酚、β-谷甾醇等多个活性成分作用于ESR1、TP53、AKT1等靶点,直接或间接通过调控PI3K-AKT、MAPK等多条信号通路调节雌激素的活性,发挥治疗乳腺增生症的作用。     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

Objective：To investigate the gene expression of osteoprotegerin（OPG） and osteoclast differentiation factor（ODF） in the bone tissue of patients with hip fracture due to osteoporosis. Methods：OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers（over 50 years old） with hip fracture（Observer Group） and 30 cases of hip facture sufferers with no osteoporosis（Control group） were analyzed with the Semi-Quantitative RT-PCR method. Results：The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion：Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

Objective：To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas（SPTP）. Methods：Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin（HE） staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results：Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin（9/9 cases）, AAT（9/9 cases）, NSE（9/9 cases）, ACT（7/9 cases）, CK20（2/9 cases）, CgA（1/9 cases）, S-100（3/gcases）, PR（4/gcases）, Syn（3/9 cases） and CD56（5/9cases）, negative in CEA and ER. Conclusion：SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.     

SCREENING FOR A 21-CHROMOSOME ABNORMALITY IN PREIMPLANTED EMBRYOS OF ELDERLY WOMEN

Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.