Objective:To evaluate the effects of Capsosiphon fulvescens(C.fulvescens)ethanolic extract on inflammation in lipopolysaccharide(LPS)-induced RAW296.7 macrophages.Methods:The protective effects of C.fulvescens ethanol...Objective:To evaluate the effects of Capsosiphon fulvescens(C.fulvescens)ethanolic extract on inflammation in lipopolysaccharide(LPS)-induced RAW296.7 macrophages.Methods:The protective effects of C.fulvescens ethanolic extract on LPS-induced inflammation in RAW264.7 macrophages were assessed using biochemical analysis,including enzyme-linked immunosorbent assay,quantitative reverse transcription-polymerase chain reaction,and Western blot analysis.To examine reactive oxygen species(ROS)production,flow cytometry analysis,and immunofluorescence staining were used.Furthermore,the modulatory effect of C.fulvescens ethanolic extract on NF-κB activation was investigated.Results:C.fulvescens ethanolic extract significantly attenuated LPS-induced levels of pro-inflammatory cytokines and notably reduced the secretion and mRNA levels of LPS-mediated matrix metalloproteinases.In addition,C.fulvescens ethanolic extract decreased ROS production and suppressed the TLR4/NF-κB signaling pathway.Conclusions:C.fulvescens ethanolic extract alleviates inflammation as well as oxidative stress by modulating the TLR4/NF-κB signaling in LPS-induced RAW264.7 macrophages.C.fulvescens can be used as a potential therapeutic agent to suppress inflammation and oxidative stress-associated diseases.展开更多
目的:研究Toll样受体4(TLR4)基因多态性与2型糖尿病(T2DM)肾病患者尿路感染易感性的关系。方法:选取2020年02月-2023年02月该院收治的T2DM肾病合并尿路感染者85例(记为感染组)及同期未合并尿路感染的T2DM肾病患者81例(记为未感染组)、...目的:研究Toll样受体4(TLR4)基因多态性与2型糖尿病(T2DM)肾病患者尿路感染易感性的关系。方法:选取2020年02月-2023年02月该院收治的T2DM肾病合并尿路感染者85例(记为感染组)及同期未合并尿路感染的T2DM肾病患者81例(记为未感染组)、健康体检者30例(对照组)为研究对象,收集尿路感染者的中段尿液并予以病原菌培养和鉴定,测定其肾功能、炎症因子指标,经聚合酶链式反应(PCR)限制性片段长度多态性方法分析TLR4基因多态性,多因素Logistics回归法分析T2DM肾病患者尿路感染的危险因素。结果:85例T2DM肾病并发尿路感染患者中,中段尿样本共检出94株病原菌,包括革兰阴性菌55株(58.51%)、革兰阳性菌34株(36.17%)、真菌5株(5.32%),其中大肠埃希菌39株(占41.49%);感染组血清血肌酐(Scr)、24 h尿微量白蛋白(24 h UMA)、尿素氮(BUN)及超敏C反应蛋白(hs-CRP)、肿瘤坏死因子-α(TNF-α)、白细胞介素-6(IL-6)、核因子κB(NF-κB)、Nod样受体蛋白3炎性小体(NLRP3)均高于未感染组、对照组(P<0.05);感染组的TLR4 rs10759932位点TT+TC基因型及等位基因T频率、rs11536889位点GG+GC基因型、等位基因G频率高于未感染组(P<0.05);T2DM肾病患病年限、留置尿管史、NF-κB、NLRP3水平及TLR4基因rs10759932位点、rs11536889位点基因多态性为T2DM肾病并发尿路感染的独立危险因素(P<0.05)。结论:T2DM肾病患者尿路感染的病原菌以大肠埃希菌为主,且TLR4基因多态性与T2DM肾病患者尿路感染易感性存在密切关联,可予以检测。展开更多
基金funded by Korea Institute of Marine Science&Technology Promotion(KIMST)funded by the Ministry of Oceans and Fisheries,Korea(20220488).
文摘Objective:To evaluate the effects of Capsosiphon fulvescens(C.fulvescens)ethanolic extract on inflammation in lipopolysaccharide(LPS)-induced RAW296.7 macrophages.Methods:The protective effects of C.fulvescens ethanolic extract on LPS-induced inflammation in RAW264.7 macrophages were assessed using biochemical analysis,including enzyme-linked immunosorbent assay,quantitative reverse transcription-polymerase chain reaction,and Western blot analysis.To examine reactive oxygen species(ROS)production,flow cytometry analysis,and immunofluorescence staining were used.Furthermore,the modulatory effect of C.fulvescens ethanolic extract on NF-κB activation was investigated.Results:C.fulvescens ethanolic extract significantly attenuated LPS-induced levels of pro-inflammatory cytokines and notably reduced the secretion and mRNA levels of LPS-mediated matrix metalloproteinases.In addition,C.fulvescens ethanolic extract decreased ROS production and suppressed the TLR4/NF-κB signaling pathway.Conclusions:C.fulvescens ethanolic extract alleviates inflammation as well as oxidative stress by modulating the TLR4/NF-κB signaling in LPS-induced RAW264.7 macrophages.C.fulvescens can be used as a potential therapeutic agent to suppress inflammation and oxidative stress-associated diseases.
文摘目的:研究Toll样受体4(TLR4)基因多态性与2型糖尿病(T2DM)肾病患者尿路感染易感性的关系。方法:选取2020年02月-2023年02月该院收治的T2DM肾病合并尿路感染者85例(记为感染组)及同期未合并尿路感染的T2DM肾病患者81例(记为未感染组)、健康体检者30例(对照组)为研究对象,收集尿路感染者的中段尿液并予以病原菌培养和鉴定,测定其肾功能、炎症因子指标,经聚合酶链式反应(PCR)限制性片段长度多态性方法分析TLR4基因多态性,多因素Logistics回归法分析T2DM肾病患者尿路感染的危险因素。结果:85例T2DM肾病并发尿路感染患者中,中段尿样本共检出94株病原菌,包括革兰阴性菌55株(58.51%)、革兰阳性菌34株(36.17%)、真菌5株(5.32%),其中大肠埃希菌39株(占41.49%);感染组血清血肌酐(Scr)、24 h尿微量白蛋白(24 h UMA)、尿素氮(BUN)及超敏C反应蛋白(hs-CRP)、肿瘤坏死因子-α(TNF-α)、白细胞介素-6(IL-6)、核因子κB(NF-κB)、Nod样受体蛋白3炎性小体(NLRP3)均高于未感染组、对照组(P<0.05);感染组的TLR4 rs10759932位点TT+TC基因型及等位基因T频率、rs11536889位点GG+GC基因型、等位基因G频率高于未感染组(P<0.05);T2DM肾病患病年限、留置尿管史、NF-κB、NLRP3水平及TLR4基因rs10759932位点、rs11536889位点基因多态性为T2DM肾病并发尿路感染的独立危险因素(P<0.05)。结论:T2DM肾病患者尿路感染的病原菌以大肠埃希菌为主,且TLR4基因多态性与T2DM肾病患者尿路感染易感性存在密切关联,可予以检测。