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| 1 | Gadd45a deletion aggravates hematopoietic stem cell dysfunction in ATM-deficient mice显示文摘混乱毛细管扩张变异(ATM ) kinase 在 genomic 的维护起一个必要作用稳定性。ATM 缺乏(ATM/) 老鼠展出造血的干细胞(HSC ) 机能障碍和淋巴瘤的高发生。Gadd45a 控制房间周期拘捕, apoptosis 和 DNA 修理,并且涉及 ATM-p53 调停的 DNA 损坏反应。然而,在调整 ATM/ HSC 的功能的 Gadd45a 的角色是未知的。这里,我们报导那 Gadd45a 删除没在 ATM/ 鼠标救 T 房间和 B 房间开发的缺点。相反, ATM 和 Gadd45a 加倍 HSC 展出了的大美人(ATM/Gadd45a/) 在与在 HSC 移植的 ATM/ HSC 相比的长期的自强能力的一个加重的缺点试验。进一步的实验表明 ATM/Gadd45a/ HSC 的加重的缺点由于房间增长的减小,包括 p53-p21 发信号的一条起来规定与 DNA 损坏的累积和 DNA 损坏反应的随后的激活联系了小径。另外, ATM/Gadd45a/ 老鼠比 ATM/ 老鼠显示出造血的恶意,以及转移的增加的率的增加的发生。在结论, Gadd45a 删除加重了 DNA 损坏累积,它随后在 ATM/ HSC 导致了一个进一步损害的自强能力和增加的恶意的转变。 | Yulin Chen Runan Yang Peng Guo Zhenyu Ju | 2014 | Protein & Cell2014，5，1： | 4 |
| 2 | Highly Improved Microstructure and Properties of Poly(p-phenylene terephthalamide) Paper-based Materials via Hot Calendering Process显示文摘In this study,the effect of hot calendering process on the microstructure and properties of poly(p-phenylene terephthalamide)(PPTA) paper-based materials was investigated.The microstructures of the fracture surface,crystalline structure,and single fiber strength of the PPTA paperbased materials as well as the different bonding behaviors between the PPTA fibers and PPTA fibrids obtained before and after the hot calendering process were examined.The results indicated that a high linear pressure would result in a limited improvement of the strength owing to the unimproved paper structure.The optimal values of tensile index and dielectric strength of 56.6 N·m/g and 27.6 kV/mm,respectively,could only be achieved with a synergistic effects of hot calendering temperature and linear pressure(240℃ and 110 k N/m,respectively).This result suggested it was possible to achieve a significant reinforcement and improvement in the interfacial bonding of functional PPTA paper-based materials,and avoid the formation of unexpected pleats and cracks in PPTA paper-based materials during the hot calendering process. | Bin Yang ZhaoQing Lu MeiYun Zhang ShunXi Song RuNan Wang | 2017 | Paper And Biomaterials2017，2，3： | 3 |
| 3 | Application of Human Adenovirus Genotyping by Phylogenetic Analysis in an Outbreak to Identify Nosocomial Infection显示文摘Nosocomial infections are common in pediatric patients and can be fatal in infants and immunocompromised patients. In September 2018, a high positive rate of human adenovirus HAdV was occurred among hospitalized children in the Children's Hospital Affiliated to the Capital Institute of Paediatrics in Beijing. To investigate whether this outbreak of HAdV was related to nosocomial infections or the result of community infections, we collected respiratory specimens from patients with acute respiratory infections in a respiratory ward during June to December 2018, and screened for respiratory viruses. Among 1,840 cases included, 95(5.2%, 95/1840) were positive for HAdV and 81 were genotyped based on phylogenetic analysis, including seven as HAdV-1(8.6%), 30 HAdV-3(37.0%), two HAdV-6(2.5%), and 42 HAdV-7(51.9%). More HAdV-positive samples were collected in August(4.7%, 12/255), September(15.0%, 41/274) and October(6.9%, 17/247), with a peak in September 2018. By combining the results of HAdV phylogenetic analysis with clinical data of patients, there were 77 cases(4.2%, 77/1840;81.1%, 77/95) excluded from nosocomial infections, eight cases representing possible infections transmitted by visitors or attending parents, three cases without sequences that might have been due to infection transmitted by roommates positive for HAdV, one case of a roommate without an HAdV sequence, and six cases that shared highly homologous sequences with those of their roommates, for which nosocomial infections might be considered. In conclusion, genotyping of HAdVs based on phylogenetic analysis combined with clinical information provides a powerful method to distinguish nosocomial infections from community acquired infection, especially when tracing the origins of nosocomial infections. | Chuanyu Yang Chunmei Zhu Yuan Qian Jie Deng Baoyuan Zhang Runan Zhu Fang Wang Yu Sun Dongmei Chen Qi Guo Yutong Zhou Lei Yu Ling Cao Linqing Zhao | 2021 | Virologica Sinica2021，36，3： | 3 |
| 4 | The study of modified talc powder on filler retention in papermaking 显示文摘 | Zhang Haitao Zhang Yunzhan Yang Runan | 2006 | Journal of Tianjin University of Science and technol ogy2006，，19： | 1 |
| 5 | Simultaneous multi-material embedded printing for 3D heterogeneous structures显示文摘In order to mimic the natural heterogeneity of native tissue and provide a better microenvironment for cell culturing,multi-material bioprinting has become a common solution to construct tissue models in vitro.With the embedded printing method,complex 3D structure can be printed using soft biomaterials with reasonable shape fidelity.However,the current sequential multi-material embedded printing method faces a major challenge,which is the inevitable trade-off between the printed structural integrity and printing precision.Here,we propose a simultaneous multi-material embedded printing method.With this method,we can easily print firmly attached and high-precision multilayer structures.With multiple individually controlled nozzles,different biomaterials can be precisely deposited into a single crevasse,minimizing uncontrolled squeezing and guarantees no contamination of embedding medium within the structure.We analyse the dynamics of the extruded bioink in the embedding medium both analytically and experimentally,and quantitatively evaluate the effects of printing parameters including printing speed and rheology of embedding medium,on the 3D morphology of the printed filament.We demonstrate the printing of double-layer thin-walled structures,each layer less than 200μm,as well as intestine and liver models with 5%gelatin methacryloyl that are crosslinked and extracted from the embedding medium without significant impairment or delamination.The peeling test further proves that the proposed method offers better structural integrity than conventional sequential printing methods.The proposed simultaneous multi-material embedded printing method can serve as a powerful tool to support the complex heterogeneous structure fabrication and open unique prospects for personalized medicine. | Ziqi Gao Jun Yin Peng Liu Qi Li Runan Zhang Huayong Yang Hongzhao Zhou | 2023 | International Journal of Extreme Manufacturing2023，5，3： | 0 |
| 6 | More common RNAemia in the early stage of severe SARS-CoV-2 BF.7.14 infections in pediatric patients显示文摘The risk factors of severe infections in children during the severe acute respiratory syndrome coronavirus 2(SARS‐CoV‐2)outbreak in Beijing remain elusive.SARS‐CoV‐2‐positive children admitted to the intensive care unit(ICU)with collected plasma specimens were enrolled and screened for common pathogens using capillary electrophoresis‐based multiplex PCR from December 12,2022,to January 24,2023.The SARS‐CoV‐2 subvariants were identified using next‐generation sequencing.Plasma was positive for two(positive;P),one(suspicious;S),or no(negative;N)SARS‐CoV‐2 genes were classified as plasmatic RNA‐positive(RNAemia;P+S)or without RNAemia(N).Clinical and laboratory data of the enrolled cases were then collected and analyzed.The 34 enrolled children included 26 males and 24 younger than three years.All were negative for other respiratory pathogens.BF.7.14(18/29)was the predominant subvariant.Viral loads in respiratory specimens,hours from symptom onset to the first respiratory specimen collection(time‐variable),with comorbidities and BF.7.14 and BA.5.2 distributions were significantly different in P vs.N and RNAemia vs.without RNAemia group.Among most cases,the T lymphocyte ratios decreased,while the cytokine level and the B lymphocyte ratio increased.The time variables were 2.22±2.05 and 4.00±2.49 days in BF.7.14 and BA.5.2 infections,respectively.In conclusion,SARS‐CoV‐2 was more likely to cause severe infections among males aged≤3 years old with comorbidities during the SARS‐CoV‐2 outbreak in Beijing,while RNAemia is more common in children at the early stage of severe BF.7.14 infections,and most had high cytokine levels and B‐cell activation. | Yu Sun Runan Zhu Yang Pan Ri De Shuang Liu Liping Jia Bing Lv Xiaoyun Li Dongmei Chen Yao Yao Dong Qu Daitao Zhang Linqing Zhao | 2024 | Biosafety and Health2024，6，1： | 0 |
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