基于CNKI的中医药治疗癫痫的知识图谱分析＊

目的 运用科学知识图谱的手段，分析中医药治疗癫痫的研究进程并提炼重点。方法 设置检索时间为1990年至2020年，检索对象为中国知网（CNKI）该领域的相关文献，运用CiteSpace软件科学、准确地分析这些文献的作者信息、研究（发文）机构、关键词情况。结果 共计纳入文献793篇，马融-张喜莲、刘金民、谢炜、王洪图-张丽萍等领导核心作者团队，北京、广州以及广西中医药大学、天津中医药大学第一附属医院、南方医科大学等单位为主要进行相关研究的机构，高频关键词包括大鼠、难治性癫痫、小儿癫痫、海马、脑电图等，作用机制、网络药理学、肠道菌群、氧化应激、分子生物学等为近年来的热点与前沿。结论 通过借用知识图谱的分析能帮助提炼国内中医药治疗癫痫研究领域的重点，全面分析并科学判断近年来该领域的热点及前沿，为未来的研究夯实基础并把握方向。     

Immunogenicity and reactogenicity after booster dose with AZD1222 via intradermal route among adult who had received CoronaVac

BackgroundCurrently, booster dose is needed after 2 doses of non-live COVID-19 vaccine. With limited resources and shortage of COVID-19 vaccines, intradermal(ID) administration might be a potential dose-sparing strategy.ObjectiveTo determine immunologic response and reactogenicity of ID ChAdOx1 nCoV-19 vaccine (AZD1222,Oxford/AstraZeneca) as a booster dose after completion of 2-dose CoronaVac(SV) in healthy adult.MethodsThis is a prospective cohort study of adult aged 18–59 years who received 2-dose SV at 14–35 days apart for more than 2 months. Participants received ID AZD1222 at fractional low dose(1×10¹⁰ viral particles,0.1 ml). Antibody responses were evaluated by surrogate virus neutralization test(sVNT) against delta variant and wild type, and anti-spike-receptor-binding-domain immunoglobulin G(anti-S-RBD IgG) at prior, day14, 28, 90, and 180 post booster. Solicited reactogenicity was collected for 7 days post-booster. Primary endpoint was the differences of sVNT against delta strain ≥ 80% inhibition at day14 and 90 compared with the parallel cohort study of 0.5-ml intramuscular(IM) route.ResultsFrom August2021, 100 adults with median age of 46 years(IQR 41–52) participated. Prior to booster, geometric mean(GM) of sVNT against delta strain was 22.4% inhibition(95 %CI 18.7–26.9) and of anti-S-RBD IgG was 109.3 BAU/ml(95.4–125.1). Post ID booster, GMs of sVNT against delta strain were 95.5% inhibition (95%CI 94.2–96.8) at day14, 73.1% inhibition (66.7–80.2) at day90, and 22.7% inhibition (14.9–34.6) at day180. The differences of proportion of participants achieving sVNT against delta strain ≥ 80% inhibition in ID recipients versus IM were + 4.2% (95 %CI -2.0to10.5) at day14, and ?37.3%(-54.2to-20.3) at day90. Anti-S-RBD IgG GMs were 2037.1 BAU/ml (95%CI 1770.9–2343.2) at day14 and 744.6 BAU/ml(650.1–852.9) at day90, respectively. Geometric mean ratios(GMRs) of anti-S-RBD IgG were 0.99(0.83–1.20) at day14, and 0.82(0.66–1.02) at day90. Only 18% reported feverish, compared with 37% of IM (p = 0.003). Common reactogenicity was erythema at injection site(53%) while 7% reported blister.ConclusionLow-dose ID AZD1222 booster enhanced lower neutralizing antibodies at 3 months compared with IM route. Less systemic reactogenicity occurred, but higher local reactogenicity.     

RG108 调控 TFPI-2 甲基化/TMPRSS4 表达对 NSCLC 细胞增殖和凋亡的影响

目的：探讨RG108对人非小细胞肺癌（non-small cell lung cancer, NSCLC）A549和H1299细胞增殖、凋亡的影响及其可能的作用机制。方法：体外培养A549和H1299细胞，经不同浓度RG108处理后，采用MTT法、流式细胞术分别检测细胞增殖率、细胞周期和凋亡水平；qPCR和Western blotting（WB）法检测细胞内TFPI-2 mRNA和蛋白的表达及TMPRSS4的表达量，以甲基化特异性PCR和比色法检测细胞中TFPI-2启动子区域甲基化的状态和程度；分别采用siRNA-TFPI-2和pcDNA3.0-TMPRSS4质粒敲减TFPI-2或过表达TMPRSS4，然后检测细胞增殖率及凋亡率的变化。结果：RG108处理后，A549和H1299细胞的增殖率显著降低（均P<0.05）、细胞周期阻滞于G1/S期（均P<0.05）而凋亡率显著增加（均P<0.01），细胞中TFPI-2 mRNA及蛋白表达水平均显著升高（P<0.01和P<0.05），同时细胞中TFPI-2启动子区域甲基化程度显著降低（均P<0.05）、TMPRSS4的表达也明显减少（P<0.05）。沉默TFPI-2表达后，A549和H1299细胞的增殖水平显著增加（均P<0.05），而转染pcDNA3.0-TMPRSS4质粒则显著降低细胞的凋亡率（均P<0.05）。结论：RG108能够通过抑制TFPI-2甲基化负向调控TMPRSS4表达进而抑制A549和H1299细胞的增殖，并促进其凋亡。