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超声应变技术评估PCSK9基因敲除对肥胖小鼠心肌功能的影响

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中国医学影像学杂志 2024年第9期32卷 873-877,907页

作者：王琴井一淑马鑫潘璐燕茹马学平宁夏医科大学总医院心脏中心功能检查部宁夏银川750004 延安市人民医院超声诊断科陕西延安716000 宁夏医科大学总医院心内科宁夏银川750004

目的应用超声应变技术评估PCSK9基因敲除对肥胖小鼠心肌功能的影响,并探讨其机制。材料与方法选取6周龄野生型C57BL/6雄性小鼠20只,随机分为正常组和肥胖组,各10只;选取6周龄PCSK9^(-/-)C57BL/6雄性小鼠10只为PCSK9^(-/-)组。肥胖组和PC... 详细信息

目的应用超声应变技术评估PCSK9基因敲除对肥胖小鼠心肌功能的影响,并探讨其机制。材料与方法选取6周龄野生型C57BL/6雄性小鼠20只,随机分为正常组和肥胖组,各10只;选取6周龄PCSK9^(-/-)C57BL/6雄性小鼠10只为PCSK9^(-/-)组。肥胖组和PCSK9^(-/-)组给予高脂饲料造模,正常组给予普通饲料,12周后从肥胖组和PCSK9^(-/-)组中选取造模成功小鼠,3组小鼠行心脏超声、透射电镜及免疫荧光染色进行观察。结果肥胖组、正常组和PCSK9^(-/-)组小鼠室间隔舒张末期厚度分别为(0.98±0.13)mm、(0.77±0.07)mm、(0.78±0.13)mm,差异有统计学意义(F=5.10,P=0.02),肥胖组较正常组增厚(t=2.73,P<0.05),PCSK9^(-/-)组较肥胖组变薄(t=-2.92,P<0.05)。3组左心室整体纵向应变及整体圆周应变差异有统计学意义(F=7.44、15.40,P<0.05),其中肥胖组较正常组整体纵向应变和整体圆周应变减低(t=3.79、5.50,P<0.05),PCSK9^(-/-)组较肥胖组整体纵向应变和整体圆周应变升高(t=-2.53、-3.37,P<0.05)。电镜及免疫荧光结果显示,肥胖组心肌超微结构受损,NLRP3及Caspase-1表达较正常组增多(t=12.53、-4.73,P<0.05),PCSK9^(-/-)组心肌超微结构受损明显改善,NLRP3及Caspase-1表达较肥胖组减少(t=-6.23、2.05,P<0.05)。结论超声应变技术较常规心脏超声参数能更敏感地发现PCSK9基因敲除肥胖小鼠心肌功能的改变;PCSK9基因敲除后可能通过抑制NLRP3及Caspase-1表达改善肥胖小鼠心肌功能。

关键词：肥胖症超声检查心脏应变显微镜检查电子透射 PCSK9基因基因敲除技术心肌功能小鼠

滨蒿提取物对脂多糖诱导小鼠急性肺损伤的保护作用及抗氧化活性

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中药药理与临床 2024年第4期40卷 78-82页

作者：刘燕马雪萍史玉柱王雪新疆维吾尔自治区药物研究所乌鲁木齐830004

目的:研究滨蒿提取物减轻脂多糖(LPS)诱导的小鼠急性肺损伤(ALI)的保护作用,并评价其体外抗氧化活性。方法:将60只ICR小鼠随机分为正常对照组、模型对照组、醋酸地塞米松2.5 mg/kg组和滨蒿提取物100、200、400 mg/kg组,小鼠连续给药5 d... 详细信息

目的:研究滨蒿提取物减轻脂多糖(LPS)诱导的小鼠急性肺损伤(ALI)的保护作用,并评价其体外抗氧化活性。方法:将60只ICR小鼠随机分为正常对照组、模型对照组、醋酸地塞米松2.5 mg/kg组和滨蒿提取物100、200、400 mg/kg组,小鼠连续给药5 d,末次给药后1.5 h鼻腔滴入10 mg/kg LPS建立小鼠急性肺损伤模型。造模后16 h,检测小鼠肺指数,试剂盒检测血清中髓过氧化物酶(MPO)、超氧化物歧化酶(SOD)、谷胱甘肽(GSH)和丙二醛(MDA)活力或含量;采用苏木精-伊红(HE)染色观察肺组织病理学变化。运用1,1-二苯基-2-三硝基苯肼(DPPH)自由基、2,2’-联氮-双(3-乙基苯并噻唑啉-6-磺酸)二铵盐(ABTS)自由基和超氧阴离子自由基清除试验及铁离子还原能力测定试验,对滨蒿提取物进行体外抗氧化活性评价。结果:与正常对照组比较,模型对照组小鼠体质量和血清SOD活力明显降低(P<0.05),肺指数和血清MPO、MDA、GSH活力或含量明显升高(P<0.05或P<0.01),肺组织出现明显的病理改变,包括肺泡壁增厚、肺泡出血、炎性细胞浸润;与模型对照组比较,滨蒿提取物200、400 mg/kg组能明显降低小鼠血清MPO活力和GSH含量(P<0.05);滨蒿提取物400 mg/kg组明显降低小鼠肺指数和血清MDA含量,显著升高血清SOD活力(P<0.05),同时还能够减轻急性肺损伤小鼠肺组织病理损伤。在滨蒿的体外抗氧化试验中,测得其对DPPH自由基、ABTS自由基和超氧阴离子自由基的IC50分别为24.46、17.70、347.3μg/mL。说明滨蒿提取物在体外具有显著的清除自由基的能力,其清除作用与滨蒿提取物的浓度在一定范围内呈现一定的剂量关系。此外,滨蒿提取物对铁离子具有一定的还原能力。结论:滨蒿提取物具有体外抗氧化活性,同时对急性肺损伤小鼠具有明显的保护作用,其作用机制可能与其具有较好的抗氧化作用有关。

关键词：滨蒿提取物急性肺损伤脂多糖抗氧化

Middle and Late Devonian brachiopod assemblages,sea level change and paleogeography of Hunan,China

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Science China Earth Sciences 2010年第12期53卷 1849-1863页

作者： xueping ma Pu Zong Peking Univ Key Lab Orogen Belts & Crustal Evolut MOE Dept Geol Beijing 100871 Peoples R China

Givetian through middle Famennian brachiopods of Hunan are used to define five biozones,comprising,in ascending order,the Stringocephalus Abundance Zone,the Ambocoeliid-Leiorhynchid Assemblage Zone,the Cyrtospiriferid Assemblage Zone,the Yunnanellina-Sinospirifer Assemblage Zone,and the Yunnanella-Hunanospirifer Assemblage *** correspond approximately to the *** Zone to *** Zone,*** Zone to *** Zone,*** Zone to *** Zone,*** Zone to Upper *** Zone,and Uppermost *** Zone to *** Zone,*** rifting activity in South China during the Devonian began in the middle of the Lower *** Zone(a level marked by the first appearance of ***),which is consistent with the Lower-Middle Givetian substage boundary suggested by the International Subcommission on Devonian Stratigraphy(SDS).This assumed that rifting activity in the Lower *** Zone was signified by the deposition of the Baqi Formation in Guangxi and was marked largely by the extensive deposition of the Qiziqiao Formation in central Hunan,which probably led to an opposite pattern of relative sea level change-rising in deeper water trough areas and lowering in carbonate platform *** previously recognized *** Zone sea level rise in platform margin areas of Guangxi can be identified not only in the trough areas but also in platform areas,which probably indicates an overall marine transgression at this time,rather than tectonically induced sea level ***,this level coincides with the Middle-Upper Givetian substage boundary suggested by the *** the sea level rise may have occurred in the deeper water trough areas of South China towards the end of the Givetian,platformal areas experienced uplifting at various degrees,especially in the central and northern regions of Hunan where Early Frasnian deposits were apparently absent in many ***,the end-Frasnian regre

关键词： Hunan Devonian Brachiopoda rifting sea level paleogeography

Chinese Society of Cardiology guidelines on the diagnosis and treatment of adult fulminant myocarditis

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Science China(Life Sciences) 2024年第5期67卷 913-939页

作者： Chinese Society of Cardiology,Chinese Medical Association,Writing Group Jiangang Jiang Hongyang Shu Dao Wen Wang Rutai Hui Chenze Li Xiao Ran Hong Wang Jing Zhang Shaoping Nie Guanglin Cui Dingcheng Xiang Qun Shao Shengyong Xu Discussion experts:Ning Zhou Yuming Li Wei Gao Yuguo Chen Yuan Bian Guoping Wang Liming Xia Yan Wang Chunxia Zhao Zhiren Zhang Yuhua Zhao Jianan Wang Shaoliang Chen Hong Jiang Jing Chen Xianjin Du mao Chen Yinxian Sun Sheng Li Hu Ding xueping ma Hesong Zeng Li Lin Shenghua Zhou Likun ma Ling Tao Juan Chen Yiwu Zhou Xiaomei Guo 不详 Tongji Hospital Tongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Fuwai Hospital National Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100037China Zhongnan Hospital of Wuhan University Wuhan 430062China Fuwai Huazhong Cardiovascular Hospital Zhengzhou 450003China Beijing Anzhen Hospital Capital Medical UniversityBeijing 100029China Guangzhou General Hospital of Guangzhou Military Command Guangzhou 510010China Harbin Medical University Cancer Hospital Harbin 150081China Union Hospital Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730China Taida Hospital Tianjin 300457China Peking University Third Hospital Beijing 100191China Qilu Hospital of Shandong University Jinan 250012China Kanghua Hospital DongguanGuangzhou 523080China Second Affiliated Hospital Zhejiang University School of Medicine Hangzhou 310003China Nanjing First Hospital Nanjing Medical UniversityNanjing 210006China Renmin Hospital of Wuhan University Wuhan 430060Wuhan West China Hospital Sichuan UniversityChengdu 610044China First Hospital of China Medical University Shenyang 110002China General Hospital of Ningxia Medical University Yinchuan 750003China The Second Xiangya Hospital Central South UniversityChangsha 410012China The First Affiliated Hospital of USTC University of Science and Technology of ChinaHefei 230002China The First Affiliated Hospital of Air Force Medical University Xi’an 710032China Central Hospital of Wuhan City Wuhan 430014China Tongji Medical College Huazhong University of Science and TechnologyWuhan 430030China

Fulminant myocarditis is an acute diffuse inflammatory disease of *** is characterized by acute onset,rapid progress and high risk of *** pathogenesis involves excessive immune activation of the innate immune system and formation of inflammatory *** to China’s practical experience,the adoption of the“life support-based comprehensive treatment regimen”(with mechanical circulation support and immunomodulation therapy as the core)can significantly improve the survival rate and long-term *** emphasis is placed on very early identification,very early diagnosis,very early prediction and very early treatment.

关键词： fulminant myocarditis guidelines life support-based comprehensive treatment regimen diagnosis treatment cytokine storm overactivation of immunity

复方一枝蒿颗粒体外抗呼吸道合胞病毒的作用及对先天免疫信号通路的影响

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华西药学杂志 2024年第4期39卷 371-376页

作者：马雪萍王雪司丽君王林林新疆维吾尔自治区药物研究所维吾尔药重点实验室新疆乌鲁木齐830011 中国科学院新疆理化技术研究所新疆乌鲁木齐830011

目的研究复方一枝蒿颗粒体外抗呼吸道合胞病毒(RSV)的作用及对病毒诱导激活先天免疫信号通路的影响。方法Viral Tox Glo法测定复方一枝蒿颗粒体外抗呼吸道合胞病毒的作用;Western Blotting法测定先天免疫通路蛋白表达的水平;流式微球技... 详细信息

目的研究复方一枝蒿颗粒体外抗呼吸道合胞病毒(RSV)的作用及对病毒诱导激活先天免疫信号通路的影响。方法Viral Tox Glo法测定复方一枝蒿颗粒体外抗呼吸道合胞病毒的作用;Western Blotting法测定先天免疫通路蛋白表达的水平;流式微球技术测定细胞因子表达的水平。结果复方一枝蒿颗粒在体外对呼吸道合胞病毒有明显的抑制作用,且药物浓度与抗病毒作用呈量效关系;复方一枝蒿颗粒可促进先天免疫信号通路靶点核因子κB(NF-κB)抑制蛋白α、NF-κBp65蛋白的表达水平,降低TANK结合激酶1(TBK1)、丝氨酸/苏氨酸激酶的表达水平,对RSV病毒诱导表达的炎症因子白介素-2(IL-2)、IL-6、IL-10和肿瘤坏死因子-α有明显的干预作用,表现出下调趋势。结论复方一枝蒿颗粒可通过作用于先天免疫信号通路TBK1/NF-κB发挥免疫调节作用,从而达到抗呼吸道合胞病毒的作用。

关键词：复方一枝蒿颗粒呼吸道合胞病毒人肺癌A549细胞信号通路炎性细胞因子先天免疫气道上皮细胞抗病毒

2015-2021年宁夏腹泻病例中人星状病毒分子流行病学特征分析

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病毒学报 2024年第1期40卷 125-132页

作者：袁芳蒯文和曹慜马学平魏新峰马江涛张薇宁夏回族自治区疾病预防控制中心银川750003 宁夏回族自治区人民医院银川700021

基于宁夏食源性疾病监测系统研究宁夏地区2015-2021年15家哨点医院腹泻病例中的人星状病毒(Human astrovirus,HAstV)感染状况,流行病学特点和基因特征。对收集的粪便标本,采用Real-time PCR方法筛选出的HAstV阳性标本,进行了回顾性分析... 详细信息

基于宁夏食源性疾病监测系统研究宁夏地区2015-2021年15家哨点医院腹泻病例中的人星状病毒(Human astrovirus,HAstV)感染状况,流行病学特点和基因特征。对收集的粪便标本,采用Real-time PCR方法筛选出的HAstV阳性标本,进行了回顾性分析。通过逆转录PCR对保存的HAstV阳性样本进行测序和基因分型,确定宁夏地区HAstV流行的基因型别和遗传进化。2015-2021年共收集腹泻病例标本8586例,HAstV阳性率为5.9%(513例),其中单独HAstV感染293例(占57%),和其它病毒共同感染220例(占42%),共同感染中与轮状病毒和诺如病毒GII组感染最多见,其次是两种以上病毒感染。感染发生在所有年龄组,5岁以下儿童的阳性率最高(8.0%),11-20岁年龄组阳性率最低(1.9%)。感染全年发生,一月和六月高发。对保存的168份HAstV单独阳性标本进行测序分析,测序获得94条HAstV基因序列,经鉴定为5种基因型别,分别是HAstV-1、HAstV-2、HAstV-3、HAstV-4、 HAstV-5,其中HAstV-1型为最常见的基因型(占61.7%),其次是HAstV-5(占19.1%)和HAstV-4(占15.9%)。系统发育分析显示HAstV-1分别属于HAstV-1a和HAstV-1b亚型,HAstV-1a较常见。HAstV-5和HAstV-4分别属于HAstV-5c和HAstV-4c亚型。全人群均可感染星状病毒,但主要受影响为5岁以下儿童。HAstV-1型是宁夏地区流行的主要型别,同时存在HAstV-1a和HAstV-1b、HAstV-4c、HAstV-5c共循环。

关键词：病毒性腹泻星状病毒流行特征基因特征

Environment and Age of the Upper Devonian‒Carboniferous Zhulumute and Hongguleleng Formations,Junggar Basin,NW China:Ichnological and Palynological Aspects

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Acta Geologica Sinica(English Edition) 2021年第3期95卷 724-739页

作者： MichałS TACHACZ marcelina KONDAS PawełFILIPIAK ma xueping Institute of Geological Sciences Jagiellonian University in KrakówGronostajowa 3a30-387 KrakówPoland University of Silesia in Katowice Faculty of Natural SciencesBędzińska 6041-200 SosnowiecPoland School of Earth and Space Sciences Peking UniversityBeijing 100871China

Two Upper Devonian to Lower Carboniferous sections,namely the Bulongguoer and Haer(Gennaren area)in the Junggar Basin,Central Asian Orogenic Belt,in northwestern China were examined with regard to ichnology and *** deposits of the Hongguleleng Formation and Namu Member of the Heishantou Formation,respectively,are mostly unbioturbated or poorly bioturbated,with poorly diversified trace fossils,which indicate unfavourable conditions for the burrowing benthic community during the Late Devonian and Early *** main factor governing the growth of the bioturbating population was the rapid sedimentation of fine-grained,volcanic material documented as tempestites,which buried the benthic *** the Bulongguoer section,the presence of miospores Teichertospora torquata and Grandispora gracilis enabled identification of the broad Teichertospora torquata–Grandispora gracilis Miospore Zone from the transitional Frasnian/Famennian *** accurate identification of palynostratigraphical levels(DE and CZ Miospore zones)is only *** the basis of palynofacies analysis,samples from the lower Bulongguoer section indicate deposition in more proximal conditions,whereas samples from the top of the section indicate deposition in a more distal *** the Haer section,only a general biostratigraphic indication for the Tournaisian was possible,owing to poor preservation of organic matter.

关键词： trace fossils palynology event deposition Frasnian/Famennian/Tournaisian Xinjiang

A Middle-Upper Devonian Boundary Section in the Open Platform,Platform margin Facies of Guilin,South China

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Acta Geologica Sinica(English Edition) 2009年第3期83卷 524-534页

作者： LI Hua ma xueping WEI Longming School of Earth and Space Sciences Peking University Beijing 100871 China Department of Resource and Environment Guilin University of Technology Guangxi 541004 China

The Caiziyan Middle and Upper Devonian boundary section is located approximately 30 km northeast of Guilin. It hosts relatively abundant benthic and common-rare pelagic fossils, including brachiopods, corals, tentaculites, and conodonts, which may serve as a better suitable section for pelagic and neritic stratigraphic correlation. In this section, 10 ＂standard＂ conodont zones are recognized across the Givetian-Frasnian boundary, including, in descending order, the Lower hassi Zone, punctata Zone, transitans Zone, the Upperfalsiovalis Zone, the Lowerfalsiovalis Zone, disparilis Zone, the Upper hermanni-cristatus Zone, the Lower hermanni-cristatus Zone, the Upper varcus Zone, and the Middle varcus Zone, all of which are defined by the first occurrence of their defining conodont species. The Middle-Upper Devonian （Givetian-Frasnian） boundary is defined by the first occurrence of Ancyrodella pristina in accordance with the Global Stratotype Section and Point （GSSP）, which is assigned at 6.2m above the base of bed 19 in the Caiziyan section.

关键词： conodont biostratigraphy Givetian-Frasnian boundary Devonian Caiziyan Guangxi

Atrypid Brachiopods from the Upper Devonian Wangchengpo Formation(Frasnian)of southern Guizhou,China—Extinction Patterns in the Frasnian of South China

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Acta Geologica Sinica(English Edition) 2005年第4期79卷 437-452页

作者： ma xueping Paul COPPER SUN Yuanlin LIAO Weihua The Key Laboratory of Orogenic Belts and Crustal Evolution Department of Geology Peking University Beijing 100871 China Department of Earth Sciences. Laurentian University Sudbury Canada P3E 2C6 Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences Nanjing Jiangsu 210008 China

The Wangchengpo Frasnian section of Dushan County contains two atrypid brachiopod assemblages. The lower is characterized by the Atryparia （Costatrypa） dushanensis fauna that appears at the base of the Hejiazhai Member approximately in the falsiovalis to transitans conodont zones： the upper is characterized by the Radiatrypa yangi fauna, which appears in the Lujiazhai Member approximately correspondent with the hassi to Upper rhenana conodont zones. Atrypid brachiopods, together with other brachiopods from the Dushan section show that the Hejiazhai Member is of Frasnian age. Preliminary analyses of Frasnian atrypid brachiopods from sections of South China indicate that there are nine genera and subgenera including Atryparia （Costatrypa）, Kyrtatrypa, Spinatrypa, lsospinatrypa, Spinatrypina, lowatrypa, Desquamatia （Desquamatia）. Desquamatia （Seratrypa）, and Radiatr）pa. Atrypid species diversity did not change much through the Frasnian. On a regional scale in South China, most atrypid species went extinct prior to the Frasnian/Famennian boundary. At any specific locality or section, these atrypids became extinct about 20-40 m below the Frasnian/Famennian （F/F） boundary, within the linguiformis conodont Zone, marking this as the major extinction level. Three new atrypid species are described： Atryparia （Costatrypa） dushanensis, lowatrypa pseudobodini, and Radiatrypa yangi.

关键词： Atrypids Brachiopoda Upper Devonian Wangchengpo Formation South China