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| 1 | Digital subtraction angiographic characteristics of progression of moyamoya disease 6 months prior to surgical revascularisation显示文摘background Evidence on the natural angiographic course of moyamoya disease(MMD)is lacking.It takes about 6 months for waiting for revascularisation surgery.The issue of when to perform subtraction angiography(DSA)for follow-up remains unclear.We investigated the natural course of MMD by DSA and attempted to determine the best interval to perform the follow-up DSA.Methods This is a single-centre cohort study of Chinese MMD inpatients treated from 1 January 2015 to 31 August 2019.Their angiographic findings were evaluated on Suzuki stage and collateral circulation between two follow-ups of the same hemisphere.results A total of 110 patients who met the criteria were enrolled in this study.After a median 6 months follow-up,five patients(4.5%)had progression,four females and one male.Time interval of progression ranged from 4 to 137 months with a mean of 61.4 months.Of five patients with progression,four had unilateral lesion(two ipsilateral and two contralateral)and one had bilateral lesions.Collateral circulation was changed in three of five patients.Conclusions The angiographic evidence of progression in MMD was rare in the short-term follow-up,and most patients with progression had initial unilateral involvement.DSA re-examination may be not needed in patients with bilateral MMD,but needed in unilateral MMD. | Peicong Ge Qian Zhang Xun Ye Xingju Liu Xiaofeng Deng Jia Wang Rong Wang Yan Zhang Dong Zhang Ji Zong Zhao | 2020 | Stroke & Vascular Neurology2020，5，1： | 1 |
| 2 | Preparation of CeO2 Nanophotocatalyst Using Precipitation Method 显示文摘 | Qiu Kehui Wang Yanrong Zhang Peicong | 2007 | Mater Sci Forum2007，，： | 1 |
| 3 | Preparation of CeO2 nanophotoeatalyst using precipitation method显示文摘 | QIU Kehui WANG Yanrong ZHANG Peicong | 2007 | Materials Science Forum2007，，： | 1 |
| 4 | Preparation of ceria nanophotocatalyst using precipitation method显示文摘 | Qiu Kehui Wang Yanrong Zhang Peicong | 2007 | Mater Sci2007，，： | 1 |
| 5 | Porous polyurethane hydrogels incorporated with CMC for eliminating methylene blue from water显示文摘Here,a series of polyurethane porous hydrogels(PUF-s)loaded with different sodium carboxymethyl cellulose(CMC)were successfully prepared by one-step foaming method.The physio-chemical prop-erties and morphologies were characterized.The effects of CMC content,adsorbent dosage,temperature,pH value and other fac-tors on the adsorption of methylene blue(MB)dye in water by CMC-PUF-s were also investigated through static adsorption experi-ments.The results showed that CMC-PUF-10 had excellent adsorp-tion performance for MB solution with removal rate of 81.47%,and the maximum adsorption capacity was 27.5 mg/g.In addition,the study of adsorption kinetics and adsorption isotherms showed that the adsorption of MB by CMC-PUF was more consistent with Langmuir isotherm adsorption model and pseudo second-order kinetic model.The adsorption thermodynamics study suggested that the adsorption process of MB by CMC-PUF-10 was sponta-neous and exothermic at room temperature.The results of cyclic adsorption experiment demonstrated that the removal rate of MB reached above 70%after five cycles,indicating the foams with excellent recyclability.Finally,a low-cost,environmentally friendly and recyclable MB adsorbent was synthesized in this study.As polyurethane foam was synthesized by one-step foaming method,this adsorbent can be prepared on site in practical application and reduce the transportation cost. | Li Wang Qing Yang Yong Yang Kun Luo Ruqing Bai Peicong Zhang | 2023 | International Journal of Smart and Nano Materials2023，14，1： | 0 |
| 6 | Biocompatible Poly(ε-caprolactone)-based Shape-memory Polyurethane Composite Scaffold with Bone-induced Activity显示文摘3D porous scaffold could provide suitable bone-like structure for cell adhesion and proliferation;however,surgical suffering from large volume implantation is a great challenge for patients.In this study,a shape programmable porous poly(ε-caprolactone)(PCL)-based polyurethane scaffold with memory effect was synthesized via gas foaming method,using Citrate modified Amorphous calcium Phosphate(CAP)as bioactive factor.The bending experiments indicated that the scaffolds achieved excellent shape-memory effect,which could be influenced by particle weight content.In vitro mineralization results suggested that the deposition of hydroxyapatite was promoted by scaffolds.Additionally,cell assay showed that composite scaffolds presented good cell toxicity and osteogenicity by the differentiation of rat Mesenchymal Stem Cells(rMSCs)into the osteogenic lineage.In the model of rat cranial implantation,the reparative tissue covered the defect site and bone-like structure deposited on the scaffold due to the formation of new bones.In summary,the porous smart shape-memory composite scaffolds could be a potential candidate in future distinctive bone repair applications. | Kun Luo Li Wang Xiaohu Chen Xiyang Zeng Shiyi Zhou Peicong Zhang Junfeng Li | 2022 | Journal of Bionic Engineering2022，19，1： | 0 |
| 7 | 3D Biocompatible Polyester Blend Scaffolds Containing Degradable Calcium Citrate for Bone Tissue Engineering显示文摘In this study,a novel porous 3D composite scaffold based on the biodegradable Poly(ε-caprolactone)(PCL),Polylactide Acid(PLA)and Calcium Citrate(CC)was developed via polymer blends and thermal-induced phase separation.The chemical structure,crystalline structure and micromorphology as well as mechanical strength of the scaffolds were characterized by Fourier Transform Infrared Spectroscopy(FTIR),X-ray Diffraction(XRD),Scanning Electron Microscope(SEM)and tensile tests.The results show that the obtained composite scaffold present a suitable bone-like porous structure and sufficient mechanical strength.Furthermore,the release of calcium ions in Simulated Body Fluid(SBF)indicates that the composite material can provide a stable calcium-ion environment and maintain a constant pH value during the soaking process.The cell proliferation results from CCK-8 and light microscopy show that MG63 cells exhibit excellent adhesion and proliferation on the stent.At the same time,animal implantation histology confirms that the composite scaffolds have good biocompatibility in vivo.The scaffold material has greatly potential application value in the field of bone tissue engineering. | Yifei Xiao Li Wang Kun Luo Yanan Yang Peicong Zhang Junfeng Li | 2022 | Journal of Bionic Engineering2022，19，2： | 0 |
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