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急性敌草快中毒大鼠肠道损伤机制的研究

中华危重病急救医学 2024年第3期36卷 293-297页

作者：张建爽孙艺青高恒波苑霖姚冬奇刘亮吕宝谱田英平河北医科大学第二医院急诊科石家庄050000

目的探讨敌草快(DQ)对大鼠肠道焦亡相关蛋白及紧密连接蛋白表达的影响,分析细胞焦亡在急性DQ中毒大鼠肠道损伤中的作用。方法将36只Wistar雄性大鼠随机分为对照组及染毒3 h、12 h、36 h、3 d组,每组6只。各染毒组均给予1/2半数致死量(LD... 详细信息

目的探讨敌草快(DQ)对大鼠肠道焦亡相关蛋白及紧密连接蛋白表达的影响,分析细胞焦亡在急性DQ中毒大鼠肠道损伤中的作用。方法将36只Wistar雄性大鼠随机分为对照组及染毒3 h、12 h、36 h、3 d组,每组6只。各染毒组均给予1/2半数致死量(LD50)115.5 mg/kg DQ一次性灌胃;对照组给予等量生理盐水灌胃。对照组于DQ灌胃后3 h麻醉取空肠组织;各染毒组分别于DQ灌胃后3 h、12 h、36 h、3 d麻醉取空肠组织。记录大鼠的一般情况;采用苏木素-伊红(HE)染色观察各组大鼠空肠组织病理学改变;采用免疫组织化学染色观察空肠组织焦亡相关蛋白〔NOD样受体蛋白3(NLRP3)、天冬氨酸特异性半胱氨酸蛋白酶1(caspase-1)、Gasdemin D(GSDMD)〕的表达;采用蛋白质免疫印迹试验(Western blotting)检测空肠组织焦亡相关蛋白和紧密连接蛋白〔闭合蛋白(Occludin)、封闭蛋白-1(Claudin-1)〕的表达。结果光镜下显示,大鼠空肠组织在染毒早期(3 h)即出现病理学改变,染毒12 h组损伤最重,可见大量炎症细胞浸润,染毒3 d组损伤明显减轻。免疫组织化学染色结果显示,NLRP3、caspase-1和GSDMD在对照组和各染毒组大鼠空肠黏膜组织中均有表达,其中对照组阳性细胞表达较少,着色浅;各染毒组大鼠上述蛋白表达均明显增加,着色深。Western blotting结果显示,各染毒组大鼠空肠组织NLRP3蛋白表达均较对照组升高,以染毒36 h组升高最显著(NLRP3/β-actin:1.47±0.06比0.43±0.14,P0.05)。与对照组比较,各染毒组Occludin、Claudin-1蛋白表达均降低,其中染毒3 h、12 h、36 h组Occludin蛋白表达明显降低(Occludin/β-actin:0.74±0.17、0.91±0.20、0.79±0.23比1.41±0.08,均P<0.05),各染毒组Claudin-1蛋白表达虽有下降,但差异均无统计学意义。结论急性DQ中毒大鼠肠道损伤可能与激活小肠细胞焦亡途径、细胞间连接致密性降低有关。

关键词：敌草快肠道焦亡相关蛋白紧密连接蛋白

Promotion effect of Re additive on the bifunctional Ni catalysts for methanation coupling with water gas shift of biogas: Insights from activation energy

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Chinese Journal of Chemical Engineering 2020年第6期28卷 1628-1636页

作者： Xinxin Dong Baosheng Jin Zhiwei Kong yiqing sun Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy&EnvironmentSoutheast UniversityNanjing 210096China

The cheap manganese sand was first modified by H2O2 and was further creatively utilized as Ni-based catalyst *** order to enhance the catalytic performance,Re was added into the Ni-based catalyst and the promotion effect of Re on the methanation coupling with water gas shift of biogas was investigated from the perspective of activation *** was found that CH4 and CO2 formation rates,which separately represented the reaction rate of methanation and water gas shift,were both enhanced after Re addition compared to non-added *** kinetics models including empirical model and K-model were employed and from the results of calculation,it showed that Re selectively decreased the activation energy of methanation reaction and had little impact on the activation energy of water gas *** increased CO2 formation rate was owing to the assistance of accelerated H2O production from methanation rather than the activation energy change in water gas shift.

关键词： Promoter Catalyst Nickel Methanation Water gas shift Kinetics

核因子红细胞2相关因子2在毒死蜱毒性机制中的作用

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中国工业医学杂志 2024年第3期37卷 267-270页

作者：路依林高恒波姚冬奇孟娜孙艺青苑霖郑拓康田英平河北医科大学第二医院急诊科河北石家庄050000

毒死蜱(chlorpyrifos,CPF)是一种广泛使用的有机磷农药,其对人类健康和生态系统的潜在风险已引起广泛关注。CPF主要通过抑制乙酰胆碱酯酶(AChE)发挥杀虫作用,但越来越多的研究表明,CPF的毒性作用远不止于此,也与氧化应激、炎症反应、细... 详细信息

毒死蜱(chlorpyrifos,CPF)是一种广泛使用的有机磷农药,其对人类健康和生态系统的潜在风险已引起广泛关注。CPF主要通过抑制乙酰胆碱酯酶(AChE)发挥杀虫作用,但越来越多的研究表明,CPF的毒性作用远不止于此,也与氧化应激、炎症反应、细胞死亡等多种生物学过程密切相关,因而可能导致神经退行性疾病、生殖发育障碍以及其他慢性健康问题。核因子红细胞2相关因子2(Nrf 2)作为一种关键的抗氧化应激调节因子,具有显著的保护作用。本文旨在综述Nrf 2在调节CPF诱导的氧化应激、神经毒性、细胞死亡和炎症反应中的作用机制,探讨其作为潜在治疗靶点的前景,以为开发新的CPF中毒治疗策略提供理论基础。

关键词：有机磷中毒毒死蜱(CPF) 核因子红细胞2相关因子2(Nrf 2) 氧化应激

Epidemiology and genetic characterization of tet(X4)-positive Klebsiella pneumoniae and Klebsiella quasipneumoniae isolated from raw meat in Chengdu City, China

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Biosafety and Health 2024年第2期6卷 116-124页

作者： Weishuai Zhai yiqing Wang Honghu sun Bo Fu Qidi Zhang Congming Wu Jianzhong Shen Dejun Liu Yang Wang National Key Laboratory of Veterinary Public Health and Safety College of Veterinary MedicineChina Agricultural UniversityBeijing 100193China Technology Innovation Center for Food Safety Surveillance and Detection Sanya InstituteChina Agricultural University Sanya 572025China Irradiation Preservation Key Laboratory of Sichuan ProvinceChengdu Institute of Food InspectionChengdu 611135China Collge of Veterlnary Medicine Qingdao Agricultural UniversityQingdao 266109China

The rapid spread of mobile tigecycline resistance presents a significant public health threat,particularly with the increasing prevalence of tet(X4)-positive Enterobacterales across various *** study aimed to inves-tigate the epidemic features and transmission dynamics of tet(X4)-positive Klebsiella pneumoniae(***-niae)through the analysis of 206 raw meats,including pork(n=182),beef(n=16),duck(n=5),and chicken(n=3).These samples were collected from schools,markets,and restaurants in Chengdu City,China.A total of 25 isolates were obtained from 13 administrative *** isolates exhibited resistance to tetracycline,tigecycline,ampicillin,chloramphenicol,and *** half of the isolates also demon-strated resistance to streptomycin(80%),sulfamethoxazole/trimethoprim(72%),ciprofloxacin(64%),and ampicillin/sulbactam(56%).Among these strains,14 distinct sequence types(STs)were identified,revealing evidence of inter-regional clonal spread,notably among 9 *** *** analysis revealed the presence of two *** ST5 closely resembling hypervirulent *** from ***,12 isolates were capable of transferring tigecycline resistance to Escherichia coli *** plasmid analysis showed that the tet(X4)-harboring plasmids in *** could be classified into four types,primarily belonging to the IncFIA(HI1)/HI1A/HI1B hybrid plasmid(n=16)and IncFII plasmid(n=7),which significantly contributed to the cross-species dissemination of tet(X4).In summary,this study highlights the prevalence of MDR tet(X4)-positive *** in Chengdu,driven predominantly by clonal expansion and plasmid-mediated horizontal gene *** findings emphasize the importance of contin-uous surveillance of tet(X4)-positive *** in raw meat and the implementation of effective measures to control their spread.

关键词： tet(X4) Tigecycline K.pneumoniae Clonal spread Horizontal transfer

EXPERIENCE WITH OVERLAY TYMPANOPLASTY IN 83 CHINESE PATIENTS

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Journal of Otology 2014年第1期9卷 43-47页

作者： PENG Bengang MIAO Xutao WANG Xin ZHU Sixiang sun yiqing Department of Otolaryngology Jishuitan Hospital

Background In many European and American hospitals, represented by the House Ear Clinic (HEC), the overlay tympanoplasty is used with rare exception, with simultaneous canal wall up or down mastoidectomy being taken if needed. In China, underlay tympanoplasty is used across the country, but the overlay tech-nique is used rarely. The aim of the current study was to report the authors’experience with overlay tympa-noplasty in 83 Chinese patients and study its value. Methods Eight-three patients (86 ears) underwent over-lay tympanoplasty in accordance to the standard of the HEC. The patients were followed up and conditions of the external auditory canal, tympanic membrane and hearing were reviewed and analyzed. Results All patients gained stage I incision healing. The size of external auditory canal and tympanic membrane mor-phology were satisfactory. Hearing either remained unchanged or improved. There were no hearing deterio-ration or serious complications. Conclusions Overlay tympanoplasty carries positive value in treating chron-ic otitis media and cholesteatoma with the merits of procedure standardization, adequate operative exposure, thorough disease elimination and extensive adaptation.

关键词： Tympanoplasty Overlay technique External auditory canal Surgery

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河北省体外膜氧合开展情况调查分析

中国体外循环杂志 2024年第4期22卷 263-267页

作者：宋豪杰孙艺青田英平高恒波姚冬奇刘亮吕宝谱肖浩孟庆冰郑拓康张睿崔晓磊河北医科大学第二医院急诊科石家庄050000

目的调查近5年河北省体外膜氧合(ECMO)开展情况。方法河北省医师协会体外生命支持委员会于2024年1月1日至1月20日通过电话随访本省各地委员及各医院中心负责人,收集近5年ECMO开展情况。结果近5年ECMO开展中心数由8个上升到31个,年例数... 详细信息

目的调查近5年河北省体外膜氧合(ECMO)开展情况。方法河北省医师协会体外生命支持委员会于2024年1月1日至1月20日通过电话随访本省各地委员及各医院中心负责人,收集近5年ECMO开展情况。结果近5年ECMO开展中心数由8个上升到31个,年例数由65例上升到489例,ECMO机器数量由28台增加到100台。2023年开展ECMO的科室共计47个,其中急诊ICU有18个,ICU有21个,心内科ICU有3个,呼吸ICU有2个,心外科有3个。近5年呼吸支持和循环支持患者的住院生存率有下降趋势,2022年最低,2023年较2022年有所升高,体外心肺复苏(ECPR)患者的生存率总体有升高趋势。2023年不同适应证成人ECMO患者生存率偏低,呼吸支持患者的住院生存率为41.7%、循环支持为36.4%、ECPR患者为17.9%。2023年11个地市共开展ECMO 489例,开展最多的城市为274例,开展最少的城市为11例,ECMO生存率最高的城市为51.7%,生存率最低的城市为9%。结论近5年来河北省ECMO技术开展中心数和例数均较前明显增多,但仍存在各地区发展不平衡,生存率较国际及国内水平偏低,有待进一步完善三级医疗ECMO救治网络,加强培训与质量控制,从而推动河北省ECMO技术发展。

关键词：体外膜氧合体外心肺复苏住院生存率数据收集质量控制

Zeolitic germanosilicate analogue to pharmacosiderite crystallized in an acidic medium

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Green Carbon 2023年第2期1卷 185-192页

作者： Guangying Fu Qiaolin Lang Xiaolong Liu Haonuan Zhao yiqing sun Lei Zhao Ahmed Omran Peng Lu Xiaobo Yang Bing Yu Valentin Valtchev The ZeoMat Group Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of ScienceLaoshan District266101 QingdaoChina College of Chemistry and Chemical Engineering Qingdao University266071 QingdaoChina Normandie University ENSICAENUNICAENCNRSLaboratoire Catalyse et SpectrochimieF-14000 CaenFrance

Zeolites are typically synthesized in alkaline or fluoride-containing near-neutral *** organic structure-directing agents have been investigated for such systems with the aim of discovering materials with unprecedented structures and properties for novel technical *** contrast,zeolite crystallization in strongly acidic media has yet to be *** study demonstrates that a zeolitic silicate phase crystallizes from acidic gels using trimethylamine as an organic additive with the composition 1 SiO_(2):0.3 TMA:0.3 HCl:0.15 HF:55 H_(2)O:(0.1-0.4)GeO_(2).This phase has an interrupted four-connected framework analog to the octahedron/tetrahedron-mixed framework of the mineral family *** comparison to the pharmacosiderite-type HK_(3)(Ge_(7)O_(16))(H_(2)O)_(4),the four GeO_(6)-octahedra forming the central[HGe_(4)O_(4)O_(12)]-cluster are replaced by four SiO_(4)-tetrahedra in a[Si_(4)O_(6)(OH)2.89]-unit in the new ***,the structure is distorted and may contain connectivity and point defects;thus,healing by the occasional incorporation of GeO_(6)-units is *** refined unit cell has a cubic symmetry,space group P-43m(#215),with a=7.7005(1)Å.Acidic-medium synthesis is a useful way to find new zeolites that move in a fundamentally different direction from sophisticated organic structure-directing agents.

关键词： Zeolite synthesis in acidic medium New germanosilicate zeolite 4-connected analogue of pharmacosiderite Structure analysis Structure-directing agents

miR1290在子宫内膜癌发生发展中的作用及其机制

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中华肿瘤杂志 2022年第2期44卷 130-138页

作者：申晓畅孙一卿颜磊赵兴波山东大学附属省立医院妇科济南250021 山东大学附属生殖医院妇科济南250021

目的探讨miR1290在子宫内膜癌组织中的表达情况及其与子宫内膜癌病理分级的关系, miR1290对子宫内膜癌细胞生物学特性的影响及其机制。方法收集2020年5月至2020年10月于山东大学附属省立医院手术切除的38例子宫内膜样腺癌组织、10例癌... 详细信息

目的探讨miR1290在子宫内膜癌组织中的表达情况及其与子宫内膜癌病理分级的关系, miR1290对子宫内膜癌细胞生物学特性的影响及其机制。方法收集2020年5月至2020年10月于山东大学附属省立医院手术切除的38例子宫内膜样腺癌组织、10例癌旁组织和23例正常子宫内膜组织, 采用逆转录聚合酶链反应检测其miR1290的表达。通过慢病毒转染敲低子宫内膜癌细胞KLE和Ishikawa中miR1290的表达, 细胞计数试剂盒8(CCK-8)法和集落形成实验检测细胞的增殖能力, 划痕实验和Transwell实验检测细胞的侵袭、迁移能力, Western blot法检测上皮-间充质转化(EMT)、磷脂酰肌醇3激酶(PI3K)/Akt和Wnt/β-catenin通路相关蛋白的表达。结果子宫内膜癌组织中miR1290的相对表达量为5.40±3.20, 为正常子宫内膜组织的1.55倍(P0.05);而Ishikawa细胞中EMT相关蛋白N-cadherin、Snail和Slug表达降低, E-cadherin表达升高(均P0.05)。结论子宫内膜癌组织中miR1290的表达高于癌旁组织和正常子宫内膜组织。敲低miR1290的表达可以促进子宫内膜癌细胞增殖, 但抑制细胞的侵袭、迁移及EMT能力, 可能通过PI3K/Akt和Wnt/β-catenin通路发挥作用。

关键词：子宫内膜肿瘤 miR1290 增殖侵袭、迁移 EMT 信号通路

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肿瘤相关巨噬细胞糖代谢重编程及靶向治疗

中国肿瘤临床 2023年第7期50卷 363-367页

作者：胡馨元孙一卿王颖梅薛凤霞天津医科大学总医院妇产科天津市女性生殖健康与优生重点实验室天津市300052

肿瘤相关巨噬细胞(tumor-associated macrophages,TAMs)作为肿瘤微环境(tumor microenvironment,TME)中重要的免疫细胞,具有高度异质性及可塑性,在肿瘤细胞分泌的细胞因子刺激下,可发生表型、代谢及功能变化。TAMs代谢改变以糖代谢重编... 详细信息

肿瘤相关巨噬细胞(tumor-associated macrophages,TAMs)作为肿瘤微环境(tumor microenvironment,TME)中重要的免疫细胞,具有高度异质性及可塑性,在肿瘤细胞分泌的细胞因子刺激下,可发生表型、代谢及功能变化。TAMs代谢改变以糖代谢重编程为主,M1型TAMs有氧糖酵解、磷酸戊糖途径增强,三羧酸循环减弱,具有抗肿瘤功能;M2型TAMs具有完整的三羧酸循环,可促进肿瘤进展。而在TME作用下TAMs具有多种表现形式,其糖代谢重编程可影响肿瘤迁移、侵袭及血管生成,而具体作用机制尚不明确。本文旨在探讨TAMs糖代谢重编程作用机制及其与肿瘤免疫相关性,提示TME中TAMs糖代谢重编程对肿瘤发展和靶向治疗有重要意义,可为肿瘤治疗提供新思路。

关键词：肿瘤相关巨噬细胞肿瘤微环境糖代谢重编程靶向治疗