检索结果-南通市图书馆

Application of antibody-conjugated small intestine submucosa to capture urine-derived stem cells for bladder repair in a rabbit model

引用

Bioactive Materials 2022年第8期7卷 443-455页

作者： Yu-Ting Song Yan-Qing Li Mao-Xuan Tian Jun-Gen Hu xiu-Ru zhang Peng-Cheng Liu xiu-zhen zhang Qing-Yi zhang Li Zhou Long-Mei Zhao Jesse Li-Ling Hui-Qi Xie Laboratory of Stem Cell and Tissue Engineering Orthopedic Research InstituteMed-X Center for MaterialsState Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengduSichuan610041China Department of Aesthetic Surgery The People’s Hospital of PengzhouChengduSichuan611930China Surgery of Spine and Spinal Cord Henan Provincial People’s HospitalZhengzhouHenan450000China Department of Burn and Plastic Surgery West China HospitalSichuan UniversityChengduSichuan610041China Research Core Facility of West China Hospital Sichuan UniversityChengduSichuan610041China Department of Medical Genetics and Prenatal Diagnosis West China Second HospitalSichuan UniversityChengduSichuan610041China

The need for bladder reconstruction and side effects of cystoplasty have spawned the demand for the development of alternative material substitutes.Biomaterials such as submucosa of small intestine(SIS)have been widely used as patches for bladder repair,but the outcomes are not fully satisfactory.To capture stem cells in situ has been considered as a promising strategy to speed up the process of re-cellularization and functionalization.In this study,we have developed an anti-CD29 antibody-conjugated SIS scaffold(AC-SIS)which is capable of specifically capturing urine-derived stem cells(USCs)in situ for tissue repair and regeneration.The scaffold has exhibited effective capture capacity and sound biocompatibility.In vivo experiment proved that the AC-SIS scaffold could promote rapid endothelium healing and smooth muscle regeneration.The endogenous stem cell capturing scaffolds has thereby provided a new revenue for developing effective and safer bladder patches.

关键词： Regenerative medicine Bladder tissue engineering Scaffold Antibody-conjugated

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Promotion of right ventricular outflow tract reconstruction using a novel cardiac patch incorporated with hypoxia-pretreated urine-derived stem cells

引用

Bioactive Materials 2022年第8期7卷 206-218页

作者： Long-Mei Zhao Long Wang Wen-Qian zhang Rui Wang xiu-zhen zhang Xiong-Xin Lei Yan Liang Yu-Ting Song Qing-Yi zhang Ke Lin Hui-Qi Xie Laboratory of Stem Cell and Tissue Engineering Orthopedic Research InstituteMed-X Center for MaterialsState Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengduSichuan610041China Department of Cardiovascular Surgery West China HospitalSichuan UniversityChengduSichuan610041China Department of Cardiovascular Surgery Shandong Provincial HospitalShandong First Medical UniversityJinanShandong250021China Research Core Facility West China HospitalSichuan UniversityChengduSichuan610041China

Approximately 25%of patients with congenital heart disease require implantation of patches to repair.However,most of the currently available patches are made of inert materials with unmatched electrical conductivity and mechanical properties,which may lead to an increased risk for arrhythmia and heart failure.In this study,we have developed a novel Polyurethane/Small intestinal submucosa patch(PSP)with mechanical and electrical properties similar to those of the native myocardial tissue,and assessed its feasibility for the reconstruction of right ventricular outflow tract.A right ventricular outflow tract reconstruction model was constructed in 40 rabbits.Compared with commercially available bovine pericardium patch,the PSP patch has shown better histocompatibility and biodegradability,in addition with significantly improved cardiac function.To tackle the significant fibrosis and relatively poor vascularization during tissue remodeling,we have further developed a bioactive patch by incorporating the PSP composites with urine-derived stem cells(USCs)which were pretreated with hypoxia.The results showed that the hypoxia-pretreated bioactive patch could significantly inhibit fibrosis and promote vascularization and muscularization,resulting in better right heart function.Our findings suggested that the PSP patch combined with hypoxia-pretreated USCs may provide a better strategy for the treatment of congenital heart disease.

关键词： Congenital heart disease Polypyrrole Polyurethane/small intestinal submucosa Hypoxia Urine-derived stem cells

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Application of metabolomics in urolithiasis:the discovery and usage of succinate

引用

Signal Transduction and Targeted Therapy 2023年第2期8卷 771-783页

作者： xiu-zhen zhang Xiong-xin Lei Yan-lin Jiang Long-mei Zhao Chen-yu Zou Yun-jin Bai Ya-xing Li Rui Wang Qian-jin Li Qiu-zhu Chen Ming-hui Fan Yu-ting Song Wen-qian zhang Yi zhang Jesse Li-Ling Hui-qi Xie Laboratory of Stem Cell and Tissue Engineering Orthopedic Research InstituteDepartment of OrthopedicsState Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengduSichuan 610041China Department of Urology Institute of UrologyWest China HospitalSichuan UniversityChengduSichuan 610041China Research Core Facility of West China Hospital Sichuan UniversityChengduSichuan 610041China Department of Medical Genetics West China Second University HospitalChengduSichuan 610041China

Urinary stone is conceptualized as a chronic metabolic disorder punctuated by symptomatic stone events.It has been shown that the occurrence of calcium oxalate monohydrate(COM)during stone formation is regulated by crystal growth modifiers.Although crystallization inhibitors have been recognized as a therapeutic modality for decades,limited progress has been made in the discovery of effective modifiers to intervene with stone disease.In this study,we have used metabolomics technologies,a powerful approach to identify biomarkers by screening the urine components of the dynamic progression in a bladder stone model.By in-depth mining and analysis of metabolomics data,we have screened five differential metabolites.Through density functional theory studies and bulk crystallization,we found that three of them(salicyluric,gentisic acid and succinate)could effectively inhibit nucleation in vitro.We thereby assessed the impact of the inhibitors with an EG-induced rat model for kidney stones.Notably,succinate,a key player in the tricarboxylic acid cycle,could decrease kidney calcium deposition and injury in the model.Transcriptomic analysis further showed that the protective effect of succinate was mainly through anti-inflammation,inhibition of cell adhesion and osteogenic differentiation.These findings indicated that succinate may provide a new therapeutic option for urinary stones.

关键词： crystallization thereby protective

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Multifunctional two-component in-situ hydrogel for esophageal submucosal dissection for mucosa uplift,postoperative wound closure and rapid healing

引用

Bioactive Materials 2023年第9期27卷 461-473页

作者： Xiong-Xin Lei Juan-Juan Hu Chen-Yu Zou Yan-Lin Jiang Long-Mei Zhao xiu-zhen zhang Ya-Xing Li An-Ni Peng Yu-Ting Song Li-Ping Huang Jesse Li-Ling Hui-Qi Xie Department of Orthopedic Surgery and Orthopedic Research Institute Laboratory of Stem Cell and Tissue EngineeringState Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengduSichuan610041China Department of Otolaryngology Head and Neck SurgeryWest China HospitalSichuan UniversityChengduSichuan610041China Institute of Biomedical Engineering and Informatics Ilmenau University of TechnologyGustav-Kirchh Off Str.298693IlmenauGermany Department of Medical Genetics West China Second HospitalSichuan UniversityChengduSichuan610041China

Endoscopic submucosal dissection (ESD) for gastrointestinal tumors and premalignant lesions needs submucosal fluid cushion (SFC) for mucosal uplift before dissection, and wound care including wound closure and rapid healing postoperatively. Current SFC materials as well as materials and/or methods for post-ESD wound care have single treatment effect and hold corresponding drawbacks, such as easy dispersion, short duration, weak hemostasis and insufficient repair function. Thus, designing materials that can serve as both SFC materials and wound care is highly desired, and remains a challenge. Herein, we report a two-component in-situ hydrogel prepared from maleimide-based oxidized sodium alginate and sulfhydryl carboxymethyl-chitosan, which gelated mainly based on "click" chemistry and Schiff base reaction. The hydrogels showed short gelation time, outstanding tissue adhesion, favorable hemostatic properties, and good biocompatibility. A rat subcutaneous ultrasound model confirmed the ability of suitable mucosal uplift height and durable maintenance time of AM solution. The in vivo/in vitro rabbit liver hemorrhage model demonstrated the effects of hydrogel in rapid hemostasis and prevention of delayed bleeding. The canine esophageal ESD model corroborated that the in-situ hydrogel provided good mucosal uplift and wound closure effects, and significantly accelerated wound healing with accelerating re-epithelization and ECM remodeling post-ESD. The two-component in-situ hydrogels exhibited great potential in gastrointestinal tract ESD.

关键词： Hydrogel Endoscopic submucosal dissection Mucosa uplift Tissue sealant Wound healing

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Procyanidins-crosslinked small intestine submucosa: A bladder patch promotes smooth muscle regeneration and bladder function restoration in a rabbit model

引用

Bioactive Materials 2021年第6期6卷 1827-1838页

作者： xiu-zhen zhang Yan-Lin Jiang Jun-Gen Hu Long-Mei Zhao Qiu-Zhu Chen Yan Liang Yi zhang Xiong-Xin Lei Rui Wang Yi Lei Qing-Yi zhang Jesse Li-Ling Hui-Qi Xie Laboratory of Stem Cell and Tissue Engineering Orthopedic Research InstituteState Key Laboratory of Biotherapy and Cancer CenterWest China HospitalSichuan University and Collaborative Innovation Center of BiotherapyChengduSichuanChina Research Core Facility of West China Hospital Sichuan UniversityChengduSichuanChina

Currently the standard surgical treatment for bladder defects is augmentation cystoplasty with autologous tissues,which has many side effects.Biomaterials such as small intestine submucosa(SIS)can provide an alternative scaffold for the repair as bladder patches.Previous studies have shown that SIS could enhance the capacity and compliance of the bladder,but its application is hindered by issues like limited smooth muscle regeneration and stone formation since the fast degradation and poor mechanical properties of the SIS.Procyanidins(PC),a natural bio-crosslinking agent,has shown anti-calcification,anti-inflammatory and anti-oxidation properties.More importantly,PC and SIS can crosslink through hydrogen bonds,which may endow the material with enhanced mechanical property and stabilized functionalities.In this study,various concentrations of PC-crosslinked SIS(PC-SIS)were prepared to repair the full-thickness bladder defects,with an aim to reduce complications and enhance bladder functions.In vitro assays showed that the crosslinking has conferred the biomaterial with superior mechanical property and anti-calcification property,ability to promote smooth muscle cell adhesion and upregulate functional genes expression.Using a rabbit model with bladder defects,we demonstrated that the PC-SIS scaffold can rapidly promote in situ tissue regrowth and regeneration,in particular smooth muscle remodeling and improvement of urinary functions.The PC-SIS scaffold has therefore provided a promising material for the reconstruction of a functional bladder.

关键词： Bladder reconstruction Small intestinal submucosa Procyanidins Bio-crosslinking Smooth muscle regeneration

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

In vitro anti-hepatitis B virus activity screening of Gankang granule prescriptions

引用

中国现代医学杂志 2011年第6期21卷 709-717页

作者： Hui-ying Li Li-wen Wei xiu-zhen zhang Yi-yun Xiao Guo Chen Jia-gen Wen Yu-xiang Chen School of Bioscience and Technology Central South University Changsha Hunan 410013 P.R.China School of Pharmacy Central South University Changsha Hunan 410013 P.R.China

Objective To improve the compound--Gankang granules(GKGs) on the odor,taste and efficacy by decreasing 30% components and to prepare the new compound GKGs based on the Traditional Chinese Medicine Theory.Methods The drug was extracted by the optimized technology ascertained in the previous studies.The cytotoxicity of the prescriptions was tested by MTT [3-(4,5-di-methylthiazol-2-yl)-2,5-diphenyl tetrazolium] assay,and the anti-hepatitis B virus(anti-HBV) activity was determined by ELISA(enzyme-linked-immunosorbent assay) in vitro.Results In the human HBV-transfected liver cell line HepG2.2.15,the new GKGs did not show any cytotoxicity with the 50% cytotoxic concentration(TC50) of 7.131,1.756 and 1.809 mg/mL after treatment for 3,6 and 9 days respectively,which was obviously higher than that in the human liver cell line HepG2.Moreover,they effectively suppressed the secretion of the HBV antigens with the TI of 8.519,5.730 and 7.066 for HBsAg,and 1.723,12.839 and 47.65 for HBeAg at day 3,6 and 9 respectively.This effect was as good as that of the old GKGs.On the 6th and 9th day,the rate of HBeAg inhibition exceeded 90% even with the concentration as low as 0.16 mg/mL,which was similar to that of the old GKGs.Conclusions These results reflect that the new GKGs precede the old GKGs by much lower cytotoxicity with similar anti-HBV activity,which provides reliable evidences for further pharmacological and toxicological exploration on this new compound.

关键词： GKG prescription cytotoxicity anti-HBV in vitro HBeAg HBsAg

来源：

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

Clinical value of precise rehabilitation nursing in management of cerebral infarction

引用

World Journal of Clinical Cases 2024年第1期12卷 24-31页

作者： Ya-Na Xu xiu-zhen Wang Xiao-Rong zhang Department of Neurology Wuhan Fourth HospitalWuhan 430030Hubei ProvinceChina Department of Neurosurgery The First People's Hospital of Jiangxia DistrictWuhan City(Union Jiangnan Hospital of Huazhong University of Science and Technology)Wuhan 430200Hubei ProvinceChina

BACKGROUND Cerebral infarction,previously referred to as cerebral infarction or ischemic stroke,refers to the localized brain tissue experiencing ischemic necrosis or softening due to disorders in brain blood supply,ischemia,and hypoxia.The precision rehabilitation nursing model for chronic disease management is a continuous,fixed,orderly,and efficient nursing model aimed at standardizing the clinical nursing process,reducing the wastage of medical resources,and improving the quality of medical services.AIM To analyze the value of a precise rehabilitation nursing model for chronic disease management in patients with cerebral infarction.METHODS Patients(n=124)admitted to our hospital with cerebral infarction between November 2019 and November 2021 were enrolled as the study subjects.The random number table method was used to divide them into a conventional nursing intervention group(n=61)and a model nursing intervention group(n=63).Changes in the nursing index for the two groups were compared after conventional nursing intervention and precise rehabilitation intervention nursing for chronic disease management.RESULTS Compared with the conventional intervention group,the model intervention group had a shorter time to clinical symptom relief(P<0.05),lower Hamilton Anxiety Scale and Hamilton Depression Scale scores,a lower incidence of total complications(P<0.05),a higher disease knowledge mastery rate,higher safety and quality,and a higher overall nursing satisfaction rate(P<0.05).CONCLUSION The precision rehabilitation nursing model for chronic disease management improves the clinical symptoms of patients with cerebral infarction,reducing the incidence of total complications and improving the clinical outcome of patients,and is worthy of application in clinical practice.

关键词： Precise rehabilitation nursing model for chronic disease management Cerebral infarction Knowledge of disease Safety and quality

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Possibilities for the synthesis of superheavy element Z=121 in fusion reactions

引用

Nuclear Science and Techniques 2024年第6期35卷 90-100页

作者： Ming-Hao zhang Yu-Hai zhang Ying Zou xiu-xiu Yang Gen zhang Feng-Shou zhang The Key Laboratory of Beam Technology of Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China Institute of Radiation Technology Beijing Academy of Science and TechnologyBeijing 100875China School of Physical Science and Technology Guangxi UniversityNanning 530004China National Laboratory of Heavy Ion Accelerator of Lanzhou Center of Theoretical Nuclear PhysicsLanzhou 730000China

Based on the dinuclear system model,the calculated evaporation residue cross sections matched well with the current experimental results.The synthesis of superheavy elements Z=121 was systematically studied through combinations of stable projectiles with Z=21-30 and targets with half-lives exceeding 50 d.The influence of mass asymmetry and isotopic dependence on the projectile and target nuclei was investigated in detail.The reactions^(254)Es(^(46)Ti,3n)^(297)121 and^(252)Es(^(46)Ti,3n)^(295)121 were found to be experimentally feasible for synthesizing superheavy element Z=121,with maximal evaporation residue cross sections of 6.619 and 4.123 fb at 219.9 and 223.9 MeV,respectively.

关键词： Superheavy nuclei Dinuclear system model Fusion reaction Evaporation residue cross section

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Application of neoadjuvant chemoradiotherapy and neoadjuvant chemotherapy in curative surgery for esophageal cancer:A metaanalysis

引用

World Journal of Gastrointestinal Oncology 2024年第1期16卷 214-233页

作者： Mao-xiu Yuan Qi-Gui Cai zhen-Yang zhang Jian-Zhong Zhou Cai-Yun Lan Jiang-Bo Lin The Graduate School Fujian Medical UniversityFuzhou 350000Fujian ProvinceChina Department of Thoracic Surgery Affiliated Hospital of Jinggangshan UniversityJi’an 343000Jiangxi ProvinceChina Department of Thoracic Surgery Fujian Medical University Union HospitalFuzhou 350000Fujian ProvinceChina

BACKGROUND The effectiveness of neoadjuvant therapy in esophageal cancer(EC)treatment is still a subject of debate.AIM To compare the clinical efficacy and toxic side effects between neoadjuvant chemoradiotherapy(nCRT)and neoadjuvant chemotherapy(nCT)for locally advanced EC(LAEC).METHODS A comprehensive search was conducted using multiple databases,including PubMed,EMBASE,MEDLINE,Science Direct,The Cochrane Library,China National Knowledge Infrastructure,Wanfang Database,Chinese Science and Technology Journal Database,and Chinese Biomedical Literature Database Article.Studies up to December 2022 comparing nCRT and nCT in patients with EC were selected.RESULTS The analysis revealed significant differences between nCRT and nCT in terms of disease-free survival.The results indicated that nCRT provided better outcomes in terms of the 3-year overall survival rate(OSR)[odds ratio(OR)=0.95],complete response rate(OR=3.15),and R0 clearance rate(CR)(OR=2.25).However,nCT demonstrated a better 5-year OSR(OR=1.02)than nCRT.Moreover,when compared to nCRT,nCT showed reduced risks of cardiac complications(OR=1.15)and pulmonary complications(OR=1.30).CONCLUSION Overall,both nCRT and nCT were effective in terms of survival outcomes for LAEC.However,nCT exhibited better performance in terms of postoperative complications.

关键词： Esophageal cancer Neoadjuvant chemoradiotherapy Radical resection for esophageal cancer Neoadjuvant chemotherapy Meta-analysis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nuclear charge radius predictions by kernel ridge regression with odd-even effects

引用

Nuclear Science and Techniques 2024年第2期35卷 94-102页

作者： Lu Tang zhen-Hua zhang Mathematics and Physics Department North China Electric Power UniversityBeijing 102206China Hebei Key Laboratory of Physics and Energy Technology North China Electric Power UniversityBaoding 071000China

The extended kernel ridge regression(EKRR)method with odd-even effects was adopted to improve the description of the nuclear charge radius using five commonly used nuclear models.These are:(i)the isospin-dependent A^(1∕3) formula,(ii)relativistic continuum Hartree-Bogoliubov(RCHB)theory,(iii)Hartree-Fock-Bogoliubov(HFB)model HFB25,(iv)the Weizsacker-Skyrme(WS)model WS*,and(v)HFB25*model.In the last two models,the charge radii were calculated using a five-parameter formula with the nuclear shell corrections and deformations obtained from the WS and HFB25 models,respectively.For each model,the resultant root-mean-square deviation for the 1014 nuclei with proton number Z≥8 can be significantly reduced to 0.009-0.013 fm after considering the modification with the EKRR method.The best among them was the RCHB model,with a root-mean-square deviation of 0.0092 fm.The extrapolation abilities of the KRR and EKRR methods for the neutron-rich region were examined,and it was found that after considering the odd-even effects,the extrapolation power was improved compared with that of the original KRR method.The strong odd-even staggering of nuclear charge radii of Ca and Cu isotopes and the abrupt kinks across the neutron N=126 and 82 shell closures were also calculated and could be reproduced quite well by calculations using the EKRR method.

关键词： Nuclear charge radius Machine learning Kernel ridge regression method

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：