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Intestinal mucosal barrier in functional constipation:Dose it change?

World Journal of Clinical Cases 2022年第19期10卷 6385-6398页

作者： jun-ke wang Wei Wei Dong-Yan Zhao Hui-Fen wang Yan-Li Zhang Jie-Ping Lei Shu-Kun Yao Graduate School Peking Union Medical College and Chinese Academy of Medical SciencesBeijing 100730China Department of Gastroenterology China-Japan Friendship HospitalBeijing 100029China Department of Clinical Nutrition and Department of Health Medicine Peking Union Medical College HospitalChinese Academy of Medical SciencesBeijing 100730China Data and Project Management Unit Institute of Clinical Medical SciencesChina-Japan Friendship HospitalBeijing 100029China

BACKGROUND The intestinal mucosal barrier is the first line of defense against numerous harmful substances,and it contributes to the maintenance of intestinal homeostasis.Recent studies reported that structural and functional changes in the intestinal mucosal barrier were involved in the pathogenesis of several intestinal diseases.However,no study thoroughly evaluated this barrier in patients with functional constipation(FC).AIM To investigate the intestinal mucosal barrier in FC,including the mucus barrier,intercellular junctions,mucosal immunity and gut permeability.METHODS Forty FC patients who fulfilled the Rome IV criteria and 24 healthy controls were recruited in the Department of Gastroenterology of China-Japan Friendship Hospital.The colonic mucus barrier,intercellular junctions in the colonic epithelium,mucosal immune state and gut permeability in FC patients were comprehensively examined.Goblet cells were stained with Alcian Blue/Periodic acid Schiff(AB/PAS)and counted.The ultrastructure of intercellular junctional complexes was observed under an electron microscope.Occludin and zonula occludens-1(ZO-1)in the colonic mucosa were located and quantified using immunohistochemistry and quantitative real-time polymerase chain reaction.Colonic CD3+intraepithelial lymphocytes(IELs)and CD3+lymphocytes in the lamina propria were identified and counted using immunofluorescence.The serum levels of D-lactic acid and zonulin were detected using enzyme-linked immunosorbent assay.RESULTS Compared to healthy controls,the staining of mucus secreted by goblet cells was darker in FC patients,and the number of goblet cells per upper crypt in the colonic mucosa was significantly increased in FC patients(control,18.67±2.99;FC,22.42±4.09;P=0.001).The intercellular junctional complexes in the colonic epithelium were integral in FC patients.The distribution of mucosal occludin and ZO-1 was not altered in FC patients.No significant differences were found in occludin(control,5.76E-2±1.62E-2;FC,5.17E-2±1.80E-2;P=0.240)and ZO-1(con

关键词： Intestinal mucosal barrier Functional constipation Goblet cells Intercellular junctions Mucosal immunity Gut permeability

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Sulfonated poly(4-vinylpyridine) heteropolyacid salts:A reusable green solid catalyst for Mannich reaction

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Chinese Chemical Letters 2014年第4期25卷 575-578页

作者： Wen-You Li Ying-Xiao Zong jun-ke wang Yu-Ying Niu Department of Chemical Engineering Jiuquan Vocational and Technical College key Laboratory of Hexi Corridor Resources Utilization of Gansu Universities College of Chemistry and Chemical EngineeringHexi University Gansu Engineering Laboratory of Applied Mycology Hexi University

Sulfonated poly（4-vinylpyridine） heteropolyacid salts acted as a heterogeneous catalyst to effectively catalyze the one-pot synthesis of β-amino carbonyl compounds via the Mannich reaction between aromatic aldehydes, aromatic ketone, and aromatic amines. In addition, the catalyst could be easily recovered by the filtration and reused six times without significant loss of catalytic activity.

关键词： Mannich reaction Heteropolyacid Poly(4-vinylpyridine) Heterogeneous catalyst

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Synthesis of N-benzothiazol-2-yl-amides by Pd-catalyzed C(sp^2)–H functionalization

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Chinese Chemical Letters 2015年第11期26卷 1376-1380页

作者： jun-ke wang Ying-Xiao Zong Xi-Cun wang Yu-Lai Hu Guo-Ren Yue key Laboratory of Hexi Corridor Resources Utilization of Gansu Universities College of Chemistry and Chemical Engineering Hexi University Gansu key Laboratory of Polymer Materials College of Chemistry and Chemical Engineering Northwest Normal University Gansu Engineering Laboratory of Applied Mycology Hexi University

A catalytic synthesis of N-benzothiazol-2-yl-amides from 1-acyl-B-（phenyl）thioureas was achieved in the presence of a palladium catalyst through the C（sp2）-H functionalization/C-S bond formation, This synthetic me... 详细信息

关键词： BenzothiazolePal-catalyzed1 -Acyl-3 -phenylthioureaC-H functionalizationL-Proline

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Highly efficient synthesis of 2,3-dihydroquinazolin-4(1H)-ones catalyzed by heteropoly acids in water

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Chinese Chemical Letters 2010年第7期21卷 778-781页

作者： YingXiao Zong Yan Zhao WenCai Luo Xing Hai Yu jun ke wang Yi Pan key Laboratory of Resources and Environment Chemistry of West ChinaHexi UniversityZhangye 734000China School of Chemistry and Chemical Engineering Nanjing UniversityNanjing 210093China

Heteropoly，酸高效地在周围的温度在水里与醛催化 anthranilamide 的 cyclocondensation 反应并且负担得起 -quinazolinones 加重在的相应 2,3-dihydro-4 (1H ) 对优秀收益好。这个方法提供温和反应条件和干净反应侧面，用催化剂和一... 详细信息

Heteropoly，酸高效地在周围的温度在水里与醛催化 anthranilamide 的 cyclocondensation 反应并且负担得起 -quinazolinones 加重在的相应 2,3-dihydro-4 (1H ) 对优秀收益好。这个方法提供温和反应条件和干净反应侧面，用催化剂和一个简单 workup 过程的小数量。

关键词：杂多酸催化高效合成小时水环合反应环境温度高效催化反应条件

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PEG-SO_3H as an efficient and reusable catalyst for chemoselective synthesis of 1,1-diacetates

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Chinese Chemical Letters 2013年第2期24卷 140-142页

作者： Ying-Xiao Zong jun-ke wang Yu-Ying Niu Zheng-Liang Li Zheng-En Song Zheng-jun Quan Xi-Cun wang Guo-Ren Yue Yi Pan key Laboratory of Hexi Corridor Resources Utilization of Cansu Universities College of Chemistry and Chemical EngineeringHexi University key Laboratory of Hexi Corridor Resources Utilization of Gansu Universities College of Chemistry and Chemical Engineering Hexi University School of Chemistry and Chemical Engineering.Nanjing University key Laboratory of Hexi Corridor Resources Utilization of Cansu Universities.College of Chemistry and Chemical Engineering.Hexi University Cansu key Laboratory of Polymer Materials College of Chemistry and Chemical EngineeringNorthwest Normal University key Laboratory of Hexi Corridor Resources Utilization of Gansu Universities College of Chemistry and Chemical EngineeringHexi University School of Chemistry and Chemical Engineering Nanjing University

Received 20 November 2012 Received in revised form 13 December 2012 Accepted 21 December 2012 Available online 29 January 2013

关键词： Chemoselectivityl l-DiacetatePEG-SO3HSo/vent-free

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Effectiveness of additional resection of the invasive cancer-positive proximal bile duct margin in cases of hilar cholangiocarcinoma

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Hepatobiliary Surgery and Nutrition 2018年第4期7卷 251-269页

作者： Wen-Jie Ma Zhen-Ru Wu Anuj Shrestha Qin Yang Hai-Jie Hu jun-ke wang Fei Liu Rong-Xing Zhou Quan-Sheng Li Fu-Yu Li Department of Biliary Surgery West China HospitalSichuan UniversityChengdu 610041China Laboratory of Pathology West China HospitalSichuan UniversityChengdu 610041China Department of General Surgery Andaki Medical CollegePokharaNepal

Background: The survival benefits of additional resection of the positive proximal ductal margin (PM) in hilar cholangiocarcinoma (HCCA) remains controversial. This retrospective study investigated the effectiveness of additional resection of the invasive cancer PM under different levels of preoperative carbohydrate antigen 19-9 (CA19-9). Methods: Patients who underwent hepatectomy for HCCA from 2000 to 2017 were analyzed. Surgical variables, resection margin status, length of the PM (LPM), prognostic factors, and survival were evaluated. Results: A total of 228 patients were enrolled: 175 PM(?) without additional resection patients (group A), 21 PM(?) after additional resection (group B), 16 PM(+) without additional resection (group C), and 16 PM(+) after additional resection (group D). The median survival of group B (20.99 months) was similar to that of group A (23.00 months;P=0.16), and both were significantly better than those of group C (11.60 months) and D (9.50 months), especially when preoperative CA19-9>150 U/mL (P10 mm was significantly better compared with those with an LPM ≤10 mm, especially when preoperative CA19-9 was >150 U/mL (P10 mm group, the survival of group B was comparable with that of group A (P>0.05). Conclusions: HCCA patients could get a survival benefit from a negative PM resulting from additional resection. Survival could be comparable with that of negative PM without additional resection among HCCA patients. An LPM >10 mm is possibly more associated with better survival compared with whether additional resection of the positive PM is performed under different levels of preoperative CA19-9.

关键词： Klatskin tumor margins of excision bile ducts antigens neoplasm carbohydrate antigen 19-9 (CA19-9)

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联合肝外胆管切除应用于进展期胆囊癌是否合理?

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Gastroenterology Report 2019年第6期7卷 426-433,I0002页

作者： jun-ke wang Wen-Jie Ma Zhen-Ru Wu Qin Yang Hai-Jie Hu Fei Liu Fu-Yu Li Department of Biliary Surgery West China HospitalSichuan UniversityChengduSichuanP.R.China Laboratory of Pathology West China HospitalSichuan UniversityChengduSichuanP.R.China

背景:胆囊癌手术中,肝外胆管是否应常规切除仍然存在争议。本研究旨在探讨联合肝外胆管应用于进展期胆管癌根治性手术的临床意义。方法:213例行根治性手术的T2-T4期胆囊癌患者纳入研究。比较术中联合与未联合胆外胆管切除患者的临床病... 详细信息

背景:胆囊癌手术中,肝外胆管是否应常规切除仍然存在争议。本研究旨在探讨联合肝外胆管应用于进展期胆管癌根治性手术的临床意义。方法:213例行根治性手术的T2-T4期胆囊癌患者纳入研究。比较术中联合与未联合胆外胆管切除患者的临床病理特征。同时,采用单因素和多因素Cox比例风险回归模型来明确影响总体生存(OS)的危险因素。结果:213例入组患者中,87例(40.8%)行联合肝外胆管切除。与未行肝外胆管切除者相比,联合肝外胆管切除者术后并发症发生率更高(33.3%vs 21.4%,P=0.046)。然而,联合肝外胆管切除者中位OS显著延长(25 vs 11个月,P=0.008)。按T分期和N分期进行的亚组分析显示,在T3、T4或有淋巴结转移病例中,联合肝外胆管切除者中位OS均优于未行肝外胆管切除者(T3:15 vs 7个月,P=0.002;T4:11 vs 6个月,P=0.021;N+:12 vs 7个月,P<0.001);而在T2或无淋巴结转移病例中,联合肝外胆管切除则未显示出生存获益。多因素预后危险因素分析显示,T分期、淋巴结转移、切缘状态、术前CA19-9水平及肝外胆管切除是进展期胆囊癌患者总体生存的独立预后因素(均P<0.05)。结论:联合肝外胆管切除可独立影响进展期胆囊癌患者的总体生存时间。对于T3、T4或有淋巴结转移的胆囊癌,联合肝外胆管切除是合理的,可改善患者总体生存。

关键词：肝外胆管切除 Cox比例风险回归模型进展期胆囊癌根治性手术胆管癌亚组分析无淋巴结转移 T分期

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Microstructural evolution and deformation behavior of friction stir welded twin-induced plasticity steel

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Journal of Materials Science & Technology 2024年第2期169卷 68-81页

作者： ke Qiao Kuaishe wang Jia wang Zhengyang Hao Yating Xiang Peng Han jun Cai Qi Yang Wen wang School of Metallurgical Engineering National and Local Joint Engineering Research Center for Functional Materials ProcessingXi’an University of Architecture and TechnologyXi’an 710055China Shanghai Research Institute of Materials Shanghai 200437China

The weldability of twin-induced plasticity(TWIP)steel with ultra-high strength via friction stir welding(FSW)technique was investigated,and microstructural evolution and deformation behavior of whole and micro-zones of FSW TWIP joint were studied for the first time.The results showed that the content of recrystallized grains in the stir zone(SZ)increased from 10.5%of basal material(BM)to 14.2%,and that of heat affected zone(HAZ)increased to 78.6%.The percentage of annealing twins decreased from 26.8%in BM to 11%in SZ,while increased to 35%in HAZ.Compared with the BM,the ultimate tensile strength and yield strength of the FSW joint increased to 1036 and 550 MPa,respectively,reaching 106.7%and 110.9%of BM,respectively.The elongation of the entire joint was 50.5%,which was lower than that of BM due to the nonuniform deformation during the tensile test.The engineering strain was mainly concentrated in BM and SZ and transferred to each other during the tensile test,while the engineering strain in HAZ was always the lowest.Finally,the tensile fracture occurred in the SZ.The order of ultimate tensile strength of micro-zones in the FSW joint was as follows:HAZ>BM≈SZ.The order of yield strength was as follows:HAZ>BM>SZ.

关键词： Twin-induced plasticity steel Friction stir welding Microstructure Mechanical property Deformation behavior

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Al-modified yolk-shell silica particle-supported NiMo catalysts for ultradeep hydrodesulfurization of dibenzothiophene and 4,6-dimethyldibenzothiophene:Efficient accessibility of active sites and suitable acidity

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Petroleum Science 2024年第1期21卷 654-666页

作者： ke Yu Wei-Min Kong Zhen Zhao Ai-jun Duan Lian Kong Xi-Long wang State key Laboratory of Heavy Oil Processing China University of PetroleumBeijing102249China Institute of Catalysis for Energy and Environment College of Chemistry and Chemical EngineeringShenyang Normal UniversityShenyang 110034LiaoningChina

Yolk-shell SiO2 particles(YP)with center-radial meso-channels were fabricated through a simple and effective method.Al-containing YP-supported NiMo catalysts with different Al amounts(NiMo/AYP-x,x=Si/Al molar proportion)were prepared and dibenzothiophene(DBT)and 4,6-dimethyl-dibenzothiophene(4,6-DMDBT)were employed as the probes to evaluate the hydrodesulfurization(HDS)catalytic performance.The as-prepared AYP-x carriers and corresponding catalysts were characterized by some advanced characterizations to obtain deeper correlations between physicochemical properties and the HDS performance.The average pore sizes of series AYP-x supports are above 6.0 nm,which favors the mass transfer of organic sulfides.The cavity between the yolk and the shell is beneficial for the enrichment of S-containing compounds and the accessibility between reactants and active metals.Aluminum embedded into the silica framework could facilitate the formation of Lewis(L)and Brønsted(B)acid sites and adjust the metal-support interaction(MSI).Among all the as-synthesized catalysts,NiMo/AYP-20 catalyst shows the highest HDS activities.The improved HDS activity of NiMo/AYP-20 catalyst is attributed to the perfect combination of excellent structural properties of the yolk-shell mesoporous silica,enhanced acidity,moderate MSI,and good accessibility/dispersion of active components.

关键词： Al-containing yolk-shell silica particles Accessibility Acidity Metal-support interaction Hydrodesulfurization

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Discovering the ultralow thermal conductive A_(2)B_(2)O_(7)-type high-entropy oxides through the hybrid knowle dge-assiste d data-driven machine learning

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Journal of Materials Science & Technology 2024年第1期168卷 131-142页

作者： Ying Zhang ke Ren William Yi wang Xingyu Gao Ruihao Yuan jun wang Yiguang wang Haifeng Song Xiubing Liang Jinshan Li State key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China Innovation Center NPU ChongqingChongqing 401135China Institute of Advanced Structure Technology Beijing Institute of TechnologyHaidian DistrictBeijing 100081China Laboratory of Computational Physics Institute of Applied Physics and Computational MathematicsBeijing 100088China Defense Innovation Institute Academy of Military Sciences of the PLA of ChinaBeijing 100071China

Lattice engineering and distortion have been considered one kind of effective strategies for discovering advanced materials.The instinct chemical flexibility of high-entropy oxides(HEOs)motivates/accelerates to tailor the target properties through phase transformations and lattice distortion.Here,a hybrid knowledge-assisted data-driven machine learning(ML)strategy is utilized to discover the A_(2)B_(2)O_(7)-type HEOs with low thermal conductivity(κ)through 17 rare-earth(RE=Sc,Y,La-Lu)solutes optimized A-site.A designing routine integrating the ML and high throughput first principles has been proposed to predict the key physical parameter(KPPs)correlated to the targetedκof advanced HEOs.Among the smart-designed 6188(5RE_(0.2))_(2)Zr_(2)O_(7)HEOs,the best candidates are addressed and validated by the princi-ples of severe lattice distortion and local phase transformation,which effectively reduceκby the strong multi-phonon scattering and weak interatomic interactions.Particularly,(Sc_(0.2)Y_(0.2)La_(0.2)Ce_(0.2)Pr_(0.2))_(2)Zr_(2)O_(7)with predictedκbelow 1.59 Wm^(−1)K^(−1)is selected to be verified,which matches well with the ex-perimentalκ=1.69 Wm^(−1)K^(−1)at 300 K and could be further decreased to 0.14 Wm^(−1)K^(−1)at 1473 K.Moreover,the coupling effects of lattice vibrations and charges on heat transfer are revealed by the cross-validations of various models,indicating that the weak bonds with low electronegativity and few bond-ing charge density and the lattice distortion(r∗)identified by cation radius ratio(r A/r B)should be the KPPs to decreaseκefficiently.This work supports an intelligent designing strategy with limited atomic and electronic KPPs to accelerate the development of advanced multi-component HEOs with proper-ties/performance at multi-scales.

关键词： High-entropy oxides Thermal conductivity Pyrochlore key physical parameter First-Principles

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