类型:新闻
难度:容易
(Reuters)-ResearchersforthefirsttimehaveidentifiedsomeoneintheUnitedStateswhowasreinfectedwiththenovelcoronavirus.Casesofpresumedreinfectionhavecroppedupinotherpartsoftheworld,butquestionshavearisenabouttestingaccuracy.ResearchersattheUniversityofNevada,RenoSchoolofMedicineandtheNevadaStatePublicHealthLaboratoryemphasizedthatreinfectionwiththevirusisprobablyrare,butsaidthefindingsimplythatinitialexposuretothevirusmaynotresultinfullimmunityforeveryone.
研究人员首次确认美国新冠病毒再感染病例。疑似再感染病例在世界其他地区相继出现,是否与检测准确性有关值得商榷。内华达大学雷诺分校医学院及内华达州公共卫生实验室研究人员表示,新冠病毒再感染或许罕见,但研究结果提示首次暴露不会使每个人都产生完全免疫。
群内教学现场回顾
9.1主题:组织原位记忆T细胞与溃疡性结肠炎专业:消化内科类型:新闻
难度:稍难
(Reuters)-"Theimmunesystemisbelievedtoplayamajorroleinthepathogenesisofinflammatoryboweldisease(IBD).However,thetypesofimmunecellsinvolvedandtheirspecificcontributionstoIBDhaveremainedanareaofintenseresearch,"Dr.JohnChangoftheUniversityofCalifornia,SanDiegotoldReutersHealthbyemail."WeobservedseveralsubtypesofCD8+tissue-residentmemoryT(TRM)cells,aspecificclassofmemoryTcellthatresidesinorgansonceformed,"hesaid."Oneofthesetissue-residentmemoryTcellsubtypes(Eomes)wasspecificallyenrichedintheintestinaltissuesofpatientswithulcerativecolitis(UC)andprogrammedtoproducelargeamountsofinflammatorycytokinesandothermoleculestokillinfectedcells."
“免疫系统被认为在炎症性肠病(inflammatoryboweldisease,IBD)发病中扮演重要角色,但参与其中的免疫细胞类型及其特定影响还需大量研究”,加州大学圣地亚哥分校的JohnChang医生通过邮件向路透社表示。“我们观察到CD8+组织原位记忆T细胞的几种亚型,前者是一类特殊的记忆T细胞,一旦形成就会存在于器官中”,JohnChang医生提到。“Eomes是其中一种亚型,在溃疡性结肠炎(ulcerativecolitis,UC)患者肠组织中尤为丰富,可产生大量炎症细胞因子及其他分子以杀伤感染细胞。”
群内教学现场回顾
9.2主题:多囊卵巢综合征专业:妇产科类型:通识
难度:容易
Themajorfeaturesofpolycysticovariansyndrome(PCOS)includemenstrualdysfunction,anovulation,andsignsofhyperandrogenism.Althoughtheexactetiologyofthisconditionisunclear,PCOScanresultfromabnormalfunctionofthehypothalamic-pituitary-ovarian(HPO)axis.(FromMedscape)
多囊卵巢综合征(polycysticovariansyndrome,PCOS)的主要特征包括月经失调、排卵障碍及雄激素过高体征。尽管其确切病因尚不清楚,但可因下丘脑-垂体-卵巢轴功能异常引发。
群内教学现场回顾
9.3主题:鱼鳞癣
专业:皮肤科
类型:通识
难度:容易
Ichthyosisreferstoarelativelyun