检索结果-南通市图书馆

Simultaneous embolization of a spontaneous porto-systemic shunt and intrahepatic arterioportal fistula:A case report

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2021年第31期9卷 9577-9583页

作者： Guo-feng Liu Xiao-Ze Wang xue-feng luo Department of Gastroenterology and Hepatology Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal CancerWest China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina

BACKGROUND Hepatic encephalopathy(HE)is a frequent and debilitating complication of chronic liver *** HE is strongly linked with spontaneous portosystemic shunts(SPSSs).Intrahepatic arterioportal fistulas(IAPFs)occur rarely but pose a major clinical challenge and may lead to or worsen portal ***,we present a rare case of recurrent HE secondary to a SPSS combined with an *** SUMMARY A 63-year-old female with primary biliary cirrhosis presented with recurrent disturbance of consciousness for 4 *** communicating the superior mesenteric vein with the inferior vena cava and IAPF linking the intrahepatic artery with the portal vein were found on contrast-enhanced abdominal computed *** patient did not respond well to medical ***,simultaneous embolization of SPSS and IAPF was *** embolization,the symptoms of HE showed obvious *** The presence of liver vascular disorders should not be neglected in patients with chronic liver disease,and interventional therapy is a reasonable choice in such patients.

关键词： Spontaneous portosystemic shunts Intrahepatic arterioportal fistula Endovascular embolization Hepatic encephalopathy Liver disease Case report

Gastrointestinal bleeding caused by extrahepatic arterioportal fistula associated with portal vein thrombosis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2012年第44期18卷 6501-6503页

作者： Ling Nie xue-feng luo Xiao Li Laboratory of Pathology Department of Pathology State Key Laboratoty of Biotherapy West China Hospital Sich- uan University Chengdu 610041 Sichuan Province China Department of Gastroenterology West China Hospital Sichuan University Chengdu 610041 Sichuan Province China Center for Vascular and Liver Disease West China Hospital Sichuan University Chengdu 610041 Si- chuan Province China

An extrahepatic arterioportal fistula(APF) involving the gastroduodenal artery and superior mesenteric vein is rare and mostly results from iatrogenic *** clinical symptoms associated with APFs may include abdominal pain,gastrointestinal bleeding,ascites,nausea,vomiting,diarrhea,or even congestive heart *** present the case of a 70-year-old man who presented with chronic abdominal pain and gastrointestinal bleeding secondary to APF and portal vein *** endovascular embolization of APF was accomplished successfully,and symptoms of portal hypertension resolved immediately after ***,the patient did not respond well to anticoagulation therapy with ***,the patient underwent implantation of a transjugular intrahepatic portosystemic shunt,and the complications of portal hypertension *** conclusion,the embolization of APF is technically feasible and effective and can be considered the first-choice therapy in selected patients.

关键词： Extrahepatic arterioportal fistula Portal veinthrombosis Embolization Transjugular intrahepaticportosystemic shunt

Update on techniques for cryopreservation of human spermatozoa

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2022年第6期24卷 563-569页

作者： Chuan Huang Yu-Lin Tang Jian-Ling Hu Wen-Jun Zhou Zeng-Hui Huang xue-feng luo Zheng Li Wen-Bing Zhu Institute of Reproductive and Stem Cell Engineering Basic Medicine CollegeCentral South UniversityChangsha 410000China Reproductive and Genetic Hospital of CITIC-Xiangya Changsha 410000China Department of Andrology Center for Men's HealthShanghai General HospitalShanghai Key Lab of Reproductive MedicineShanghai 200025China

In the 1960s,sperm cryopreservation was developed as a method to preserve ***,techniques for the cryopreservation of human spermatozoa have been widely used in assisted ***,although sperm cryobiology has made notable achievements,the optimal method for the recovery of viable spermatozoa after cryopreservation remains *** sperm quality can be affected by cryoprotectants,ice formation,storage conditions,and osmotic stress during the freezing *** review discusses recent advances in different cryopreservation techniques,cryoprotectants,and freezing and thawing methods during cryopreservation and new indications for the use of cryopreserved spermatozoa.

关键词： cryodamage cryoprotectant dry preservation freezing and thawing sperm cryopreservation

Chemical derivatization strategies for enhancing the HPLC analytical performance of natural active triterpenoids

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Pharmaceutical Analysis 2024年第3期14卷 295-307页

作者： Xiao-feng Huang Ying xue Li Yong Tian-Tian Wang Pei luo Lin-Sen Qing Chengdu Institute of Biology Chinese Academy of SciencesChengdu610041China State Key Laboratory for Quality Research in Chinese Medicines Macao University of Science and TechnologyMacaoChina Sichuan Center for Disease Control and Prevention Chengdu610041China University of Chinese Academy of Sciences Beijing100049China

Triterpenoids widely exist in nature,displaying a variety of pharmacological *** triterpenoids in different matrices,especially in biological samples holds great ***-performance liquid chromatography(HPLC)has become the predominant method for triterpenoids analysis due to its exceptional analytical ***,due to the structural similarities among botanical samples,achieving effective separation of each triterpenoid proves challenging,necessitating significant improvements in analytical ***,triterpenoids are characterized by a lack of ultraviolet(UV)absorption groups and chromophores,along with low ionization efficiency in mass ***,routine HPLC analysis suffers from poor *** derivatization emerges as an indispensable technique in HPLC analysis to enhance its *** the structural characteristics of triterpenoids,various derivatization reagents such as acid chlorides,rhodamines,isocyanates,sulfonic esters,and amines have been employed for the derivatization analysis of *** review comprehensively summarized the research progress made in derivatization strategies for HPLC detection of ***,the limitations and challenges encountered in previous studies are discussed,and future research directions are proposed to develop more effective derivatization methods.

关键词： Triterpenoid HPLC Derivatization Quantification

Stent-grafts for the treatment of TIPS dysfunction:Fluency stent vs Wallgraft stent

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2013年第30期19卷 5000-5005页

作者： xue-feng luo Ling Nie Zhu Wang Jiaywei Tsauo Ling-Jun Liu Yang Yu Biao Zhou Cheng-Wei Tang Xiao Li Department of Gastroenterology West China HospitalSichuan University Department of Interventional Radiology West China HospitalSichuan University Department of Pathology West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina

AIM:To evaluate the clinical efficacy of an expanded polytetrafluoro-ethylene-covered Fluency stent compared with that of a polyethylene terephthalate-covered Wallgraft stent for the management of transjugular intrahepatic portosystemic shunt(TIPS)***:A retrospective review of patients who underwent TIPS revision with stent-grafts between May 2007 and June 2011 was *** patients were divided into two groups according to the stentgrafts implanted:the Fluency stent(Bard Incorporated,Karlsruhe,Germany)and the Wallgraft stent(Boston Scientific,Galway,Ireland).The primary patency rates were calculated and compared using the Kaplan-Meier ***:A total of 73 patients were evaluated in this study:33 with Fluency stents and 40 with Wallgraft *** primary patency rates at 12 and 24 mo were 91% and 85%,respectively,in the Fluency stent group and 78% and 63%,respectively,in the Wallgraft stent *** primary shunt patency rates after TIPS revision were significantly better with the Fluency stent than with the Wallgraft stent(P = 0.033).CONCLUSION:TIPS revision with the Fluency stent has higher medium-term patency rates than that with the Wallgraft stent.

关键词： Expanded polytetrafluoroethylene-covered stent-grafts Transjugular intrahepatic portosystemic shunt dysfunction Revision Fluency

Two sandwich-type uranyl-containing polytungstates catalyze aerobic synthesis of benzimidazoles

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2024年第3期43卷 1316-1322页

作者： Yu-feng Liu Qi-Long Hu xue-Jiao Chen Ke Li Pei luo Guo-Ping Yang School of Chemistry and Material Science Jiangxi Province Key Laboratory of Synthetic ChemistryJiangxi Key Laboratory for Mass Spectrometry and InstrumentationEast China University of TechnologyNanchang330013China School of Environmental Science and Engineering Southern University of Science and TechnologyShenzhen518055China

Diversified synthetic strategies are extremely important for the structural diversity of uranium-containing polyoxometalates(U-POMs)and their functional ***,two sandwich-type U-POMs were reported,which are Na_(5.6)K_(6.4)[(UO_(2))(H_(2)O)(TeW_(9)O_(33))]_(2)·21H_(2)O(UTeW_(9))and Na_(8.9)K_(2.7)H_(1.19)[K_(0.79)(UO_(2))_(2.21)(PW_(9)O_(34))_(2)]·12H_(2)O(UPW_9)using in-situ strategy and lacunary precursor strategy,***_9 shows a typical Keggin-typeopen or half-sandwich configuration.

关键词： configuration expansion sandwich

Binary Hybrid Artificial Hummingbird with Flower Pollination Algorithm for Feature Selection in Parkinson’s Disease Diagnosis

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Bionic Engineering 2024年第2期21卷 1003-1021页

作者： Liuyan feng Yongquan Zhou Qifang luo College of Artificial Intelligence Guangxi University for NationalitiesNanning530006China Xiangsihu College of Guangxi University for Nationalities Nanning532100GuangxiChina Guangxi Key Laboratories of Hybrid Computation and IC Design Analysis Nanning530006China

Parkinson’s disease is a neurodegenerative disorder that inflicts irreversible damage on *** experimental data regarding Parkinson’s patients are redundant and irrelevant,posing significant challenges for disease ***,there is a need to devise an effective method for the selective extraction of disease-specific information,ensuring both accuracy and the utilization of fewer *** this paper,a Binary Hybrid Artificial Hummingbird and Flower Pollination Algorithm(FPA),called BFAHA,is proposed to solve the problem of Parkinson’s disease diagnosis based on speech ***,combining FPA with Artificial Hummingbird Algorithm(AHA)can take advantage of the strong global exploration ability possessed by FPA to improve the disadvantages of AHA,such as premature convergence and easy falling into local ***,the Hemming distance is used to determine the difference between the other individuals in the population and the optimal individual after each iteration,if the difference is too significant,the cross-mutation strategy in the genetic algorithm(GA)is used to induce the population individuals to keep approaching the optimal individual in the random search process to speed up finding the optimal ***,an S-shaped function converts the improved algorithm into a binary version to suit the characteristics of the feature selection(FS)*** this paper,10 high-dimensional datasets from UCI and the ASU are used to test the performance of BFAHA and apply it to Parkinson’s disease *** with other state-of-the-art algorithms,BFAHA shows excellent competitiveness in both the test datasets and the classification problem,indicating that the algorithm proposed in this study has apparent advantages in the field of feature selection.

关键词： Artificial Hummingbird Algorithm Flower pollination algorithm Feature selection Parkinson’s disease Meta-heuristic

MKK7-mediated phosphorylation of JNKs regulates the proliferation and apoptosis of human spermatogonial stem cells

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Stem Cells 2021年第11期13卷 1797-1812页

作者： Zeng-Hui Huang Chuan Huang Xi-Ren Ji Wen-Jun Zhou xue-feng luo Qian Liu Yu-Lin Tang Fei Gong Wen-Bing Zhu Institute of Reproductive and Stem Cell Engineering Central South UniversityChangsha 410008Hunan ProvinceChina Department of Reproductive Center Reproductive and Genetic Hospital of CITIC-XiangyaChangsha 410008Hunan ProvinceChina Department of Sperm Bank Reproductive and Genetic Hospital of CITICXiangyaChangsha 410008Hunan ProvinceChina

BACKGROUND Human spermatogonial stem cells(SSCs)are the basis of ***,little is known about the developmental regulatory mechanisms of SSC due to sample origin and species *** To investigates the mechanisms involved in the proliferation of human *** The expression of mitogen-activated protein kinase kinase 7(MKK7)in human testis was identified using immunohistochemistry and western blotting(WB).MKK7 was knocked down using small interfering RNA,and cell proliferation and apoptosis were detected by WB,EdU,cell counting kit-8 and fluorescenceactivated cell *** bioinformatic analysis,the interaction of MKK7 with c-Jun N-terminal kinases(JNKs)was verified by protein co-immunoprecipitation and *** phosphorylation of JNKs was inhibited by SP600125,and the phenotypic changes were detected by WB,cell counting kit-8 and fluorescenceactivated cell *** MKK7 is mainly expressed in human SSCs,and MKK7 knockdown inhibits SSC proliferation and promotes their ***7 mediated the phosphorylation of JNKs,and after inhibiting the phosphorylation of JNKs,the phenotypic changes of the cells were similar to those after MKK7 *** expression of MKK7 was significantly downregulated in patients with abnormal spermatogenesis,suggesting that abnormal MKK7 may be associated with spermatogenesis *** MKK7 regulates the proliferation and apoptosis of human SSC by mediating the phosphorylation of JNKs.

关键词： MKK7 Spermatogonial stem cell Proliferation Apoptosis JNKs

Design,preparation,microstructure and mechanical property of the lightweight radiation-shielding Mg-Ta-Al composites basing differential temperature hot rolling

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Magnesium and Alloys 2024年第6期12卷 2433-2446页

作者： Wenbo luo Songya feng Xiuzhu Han Li Zhou Qinke Kong Zhiyong xue Jianzhao Wang Mei Zhan Xianhua Chen Fusheng Pan Institute for Advanced Materials North China Electric Power UniversityBeijing 102206China Beijing Institute of Spacecraft System Engineering Beijing 100094China Sinosteel Equipment&Engineering Co Ltd.Beijing100080China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Inner Mongolia 014030China School of Materials Science Northwestern Polytechnical UniversityXi’an 710072China College of Materials Science and Engineering Chongqing UniversityChongqing 400045China

A novel lightweight,radiation-shielding Mg-Ta-Al layered metal-matrix composite(LMC)was successful designed by doping the extremely refractory metal(Ta)into Mg *** Mg-based LMCs sheets shows excellent radiation-dose shield effect,about 145 krad·a^(−1),which is about 17 times of traditional Mg alloy,while its surface density is only about 0.9 g·cm^(−2),reducing by 60%than that of pure *** quantitate relationship between radiation-dose and the materials’thickness was also confirmed to the logistic function when the surface density is in the range of 0.6-1.5 g·cm^(−2).Meantime,the rolling parameters,interface microstructure and mechanical properties in both as-rolled and annealing treated samples were *** sheets possess a special dissimilar atoms diffusion transitional zone containing an obvious inter-diffusion Mg-Al interface and the unique micro-corrugated Ta-Al interface,as well as a thin Al film with a thickness of about 10μ*** special zone could reduce the stress concentration and enhance the strength of Mg-Ta-Al *** interface bonding strength reaches up to 54-76 *** ultimate tensile strength(UTS)and yield strength(TYS)of the Mg-Ta-Al sheet were high to 413 MPa and 263 MPa,respectively,along with an elongation of 5.8%.The molecular dynamics(MD)analysis results show that the two interfaces exhibit different formation mechanism,the Mg-Al interface primarily depended on Mg/Al atoms diffusion basing point defects movement,while the Ta-Al interface with a micro-interlock pining shape formed by close-packed planes slipping during high temperature strain-induced deformation process.

关键词： Dissimilar metals composites Mg based alloys Radiation shielding Hot rolling Lightweight