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Overexpression of cyclooxygenase-2 in human HepG2, Bel-7402 and SMMC-7721 hepatoma cell lines and mechanism of cyclooxygenase-2 selective inhibitor celecoxib-induced cell growth inhibition and apoptosis

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World Journal of Gastroenterology 2005年第40期11卷 6281-6287页

作者： ning-bo liu Tao Peng Chao Pan Yu-Yu Yao bo Shen Jing Leng Laboratory of Reproductive Medicine Department of Pathology Nanjing MedicalUniversity Nanjing 210029 Jiangsu Province China Atherosclerosis Research Center NanjingMedical U .niversity Nanjing 210029 Jiangsu Province China

AIM： To investigate the cyclooxygenase-2 （COX-2） expression level in human HepG2, Bel-7402 and SMMC-7721 hepatoma cell lines and the molecular mechanism of COX-2 selective inhibitor celecoxib-induced cell growth inhibition and cell apoptosis. METHODS： Hepatoma cells were cultured and treated with celecoxib. Cell in situ hybridization （ISH） and immunocytochemistry were used to detect COX-2 mRNA and protein expression. Proliferating cell nuclear antigen and phosphorylated Akt were also detected by immunocytochemistry assay. Cell growth rates were assessed by 3-（4, 5-dimethylthiazol-2-yl-2, 5-diphenyltetrazolium （MTT） bromide colorimetric assay. Celecoxib- induced cell apoptosis was measured by terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling （TUNEL） and flow cytometry （FCM）. The phosphorylated Akt and activated fragments of caspase-9, caspase-3 were examined by Western blotting analysis. RESULTS： Increased COX-2 mRNA and protein expression were detected in all three hepatoma cell lines. Celecoxib could significantly inhibit cell growth and the inhibitory effect was in a dose- and time-dependent manner evidenced by MTT assays and morphological changes. The apoptotic index measured by TUNEL increased correspondingly with the increased concentration of celecoxib and the reaction time. With 50 μmol/L celecoxib treatment for 24 h, the apoptotic index of HepG2, BEL-7402 and SMMC-7721 cells was 25.01±3.08%, 26.40±3.05%,and 30.60±2.89%, respectively. Western blotting analysis showed remarkable activation of caspase-9, caspase-3 and dephosphorylation of Akt （Thr^308）. Immunocytochemistry also showed the reduction of PCNA expression and phosphorylation Akt （Thr^308） after treatment with celecoxib. CONCLUSION： COX-2 mRNA and protein overexpression in HepG2, Bel-7402 and SMMC-7721 cell lines correlate with the increased cell growth rate. Celecoxib can inhibit proliferation and induce apoptosis of hepatoma cell strains in a dose- and time-dependent manner.

关键词： Apoptosis Akt Celecoxib Caspase Cellproliferation COX-2 HCC PCNA

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Interconnections between diabetic corneal neuropathy and diabetic retinopathy:diagnostic and therapeutic implications

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Neural Regeneration Research 2025年第8期20卷 2169-2180页

作者： Mingyi Yu Faith Teo En ning Chang liu Yu-Chi liu Tissue Engineering and Stem Cell Group Singapore Eye Research InstituteSingapore Yong Loo Lin School of Medicine National University of SingaporeSingapore Department of Cornea and External Eye Disease Singapore National Eye CenterSingapore Ophthalmology and Visual Sciences Academic Clinical Program Duke-NUS Medical SchoolSingapore

Diabetic corneal neuropathy and diabetic retinopathy are ocular complications occurring in the context of diabetes *** corneal neuropathy refers to the progressive damage of corneal *** retinopathy has traditionally been considered as damage to the retinal ***,growing evidence suggests that diabetic retinopathy is a complex neurovascular disorder resulting from dysfunction of the neurovascular unit,which includes both the retinal vascular structures and neural *** retinopathy is one of the leading causes of blindness and is frequently screened for as part of diabetic ocular ***,diabetic corneal neuropathy is commonly overlooked and underdiagnosed,leading to severe ocular surface *** studies have found that these two conditions tend to occur together,and they share similarities in their pathogenesis pathways,being triggered by a status of chronic *** review aims to discuss the interconnection between diabetic corneal neuropathy and diabetic retinopathy,whether diabetic corneal neuropathy precedes diabetic retinopathy,as well as the relation between the stage of diabetic retinopathy and the severity of corneal *** also endeavor to explore the relevance of a corneal screening in diabetic eyes and the possibility of using corneal nerve measurements to monitor the progression of diabetic retinopathy.

关键词： cornea corneal nerves diabetes diabetic corneal neuropathy diabetic retinopathy retina

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Investigation of recystallization behavior of IF-steel using EBSD technique

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电子显微学报 2002年第5期21卷 727-728页

作者： LI bo long, ZHANG ning, liu Qing (Department of Material Science and Engineering, Tsinghua university, Beijing 100084) Department of Material Science and Engineering Tsinghua university 北京 100084

The orientation nucleation behavior of γ fiber of IF steel was studied using high resolution electron back scattering diffraction (EBSD) technique during annealing. The γ fiber nucleation occurs in the deformation b... 详细信息

关键词： EBSD 电子背散射衍射技术 IF钢再结晶显微分析

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Plerixafor-based mobilization and mononuclear cell counts in graft increased the risk of engraftment syndrome after autologous hematopoietic stem cell transplantation

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Blood Science 2024年第3期6卷 48-54页

作者： Le-Qing Cao Qi Wen bo-ning liu Zhen-Yu Zhao Xiao-Hui Zhang Lan-Ping Xu Huan Chen Yu Wang Lu Yu Feng-Rong Wang Xiao-Jun Huang Xiao-Dong Mo Peking University People’s Hospital Peking University Institute of HematologyNational Clinical Research Center for Hematologic DiseaseBeijing Key Laboratory of Hematopoietic Stem Cell TransplantationBeijingChina Hainan General Hospital Hainan Affiliated Hospital of Hainan Medical UniversityHaikouChina Peking-Tsinghua Center for Life Sciences Academy for Advanced Interdisciplinary StudiesPeking UniversityBeijingChina Research Unit of Key Technique for Diagnosis and Treatments of Hematologic Malignancies Chinese Academy of Medical SciencesBeijing 2019RU029China

Engraftment syndrome(ES)is one of the most common complications in the early phase after autologous hematopoietic stem cell transplantation(ASCT),and we aimed to evaluate the incidence and risk factors for ES patients receiving ASCT in the era of plerixafor-based mobilization.A total of 294 were enrolled,and 16.0%(n=47)experienced ES after *** main clinical manifestations were fever(100%),diarrhea(78.7%),skin rash(23.4%),and hypoxemia/pulmonary edema(12.8%).Plerixafor-based mobilization was associated with higher counts of CD3^(+)cells,CD4^(+)cells,and CD8^(+)cells in *** univariate analysis of the total cohort,age≥60 years,receiving ASCT at complete remission(CR),higher number of mononuclear cell(MNC),CD3^(+)cell counts,CD4^(+)cells as well as CD8^(+)cells transfused and plerixafor-based mobilization were associated with ES after *** analysis showed that age≥60 years(P=0.0014),receiving ASCT at CR(P=0.002),and higher number of MNC transfused(P=0.026)were associated with ES in total *** plasma cell disease subgroup,age≥60 years(P=0.013),plerixafor-based mobilization(P=0.036),and receiving ASCT at CR(P=0.002)were associated with *** with more risk factors had a higher risk of *** 1-year probabilities of relapse,non-relapse mortality,and survival were comparable between patients with and without ***,plerixafor-based mobilization may influence the composition of T lymphocytes in grafts and increase the risk of ES,particularly in patients with plasma cell disease.

关键词： Autologous stem cell transplantation Engraftment syndrome Plerixafor Risk factors

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Calculation on the Incubation Period of Proeutectoid Ferrite Transformation for Si-Mn TRIP Steel

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Journal of Shanghai Jiaotong university(Science) 2011年第2期16卷 167-172页

作者：唐广波彭宁琦刘正东 Institute for Structural Materials Central Iron and Steel Research Institute

The incubation period of proeutectoid ferrite transformation for Si-Mn transformation induced plasticity (TRIP) steel has been calculated by the Aaronson's incubation period model for *** influences of chemical compositions and hot deformation of austenite on the incubation period have been taken into consideration in the calculation,and some parameters have been proposed and validated with the measured time temperature transformation (TTT) curves from dilation *** calculation results show that it is essential to take into account of the effect of solute atoms on the interfacial energy in the austenite grain *** hypoeutectoid steel,the incubation period of ferrite transformation increases with the increase of C and Mn contents,and C has a greater impact than that of Mn,while the incubation period of ferrite transformation decreases with the increase of Si *** deformation shortens the incubation time and promotes austenite to ferrite transformation.

关键词： transformation induced plasticity (TRIP) steel proeutectoid ferrite phase transformation incubation period

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Analysis of risk factors of surgical site infections in breast cancer

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Chinese Medical Journal 2010年第5期123卷 559-562页

作者： GAO Yang-xu XU Ling YE Jing-ming WANG Dong-min ZHAO Jian-xin ZHANG Lan-bo DUAN Xue-ning liu Yin-hua Center of Breast Disease Peking University First Hospital Beijing 100034 China

Background Adjuvant chemotherapy has become an important component of standard therapy for breast cancer. However, until now, there have been few reports on the surgical site infections （SSI） after breast cancer surgery, specially after adjuvent chemotherapy. To study the risk factors of SSI of breast cancer, we analyzed patients diagnosed with breast cancer and treated with surgery. Methods Fifty-five patients diagnosed with breast cancer and received breast conserving or modified radical operations in our hospital during January 2008 to March 2008 were selected. Factors （patients＇ age, body mass index （BMI）, diabetes mellitus, no or administered adjuvant chemotherapy, with or without onset of myelosuppression and the degree, surgical approaches, duration of operation, postoperative drainage duration and total drainage volume） associated with SSI were retrospectively reviewed and statistically analyzed by single factor analysis. Results Five patients suffered SSI （5/55, 9.1%）; nineteen receiving adjuvant chemotherapy experienced Grade III＋ myelosuppression, among which 4 had SSI; only 1 out of the remaining 36 patients without adjuvant chemotherapy had SSI. The difference between the two groups was significant （P=-0.043）. The incidence of SSI in patients with postoperative drainage tube indwelling longer than 10 days was 5/21, whereas no SSI occurred in that less than 10 days （P=0.009）. In our study, there was no significient difference in other associated factors. Conclusions Concurrent Grade III＋ myelosuppression after adjuvant chemotherapy is an important risk factor of SSI in breast cancer and needs further study. No SSI was detected with indwelling time of post operative drainage less than 10 days.

关键词： breast cancer adjuvant treatment surgical site infection

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Preparation of Modified Composite Nanofiltration Membrane Synergistically Using Carboxylic Multi- walled Carbon Nanotube and β-cyclodextrin

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 232-239页

作者： liu Peng MAO Junpeng FANG Yanfeng YU Yunwu CHEN Changxiu TANG ning WAN Ye GU Yaxin liu Yunxue WANG Lihua School of Materials Science and Engineering Shenyang Jianzhu UniversityShenyang 110168China

A new modified blend ultrafiltration(UF)membrane with good hydrophilicity,high porosity and excellent anti-fouling performance was developed by using carboxylic multi-walled carbon nanotube(CMWCNT)as casting solution ***,a composite nanofiltration(NF)membrane with large water flux and good retention rate was fabricated by using the PVDF/CMWCNT blend UF membrane as the substrate,and polyvinyl alcohol(PVA),β-cyclodextrin(β-CD)and polyethylenimine(PEI)as the coating *** results show that with the appropriate addition of CMWCNT in the casting solution,the surface roughness,porosity and recovery rate of the PVDF/CMWCNT blend UF membrane is obviously *** water flux of blend UF membrane is significantly improved when the CMWCNT content increases from 0 wt%to 0.2 wt%.The water flux of blend UF membrane with 0.2 wt%CMWCNT is 162.7 L/(m^(2)·h),which is 44.3%higher than that of the pure PVDF ***β-CD content is 0.8 wt%,the retention rate of Congo red by PVDF/CMWCNT/β-CD composite NF membrane reaches 98.7%,which is 28.3%higher than that of single PVA/PEI modified *** research will provide a new idea and simple method for developing novel high-performance composite NF membranes.

关键词： CMWCNT cyclodextrin nanofiltration membrane

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Solution‑Processed Thin Film Transparent Photovoltaics:Present Challenges and Future Development

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Nano-Micro Letters 2025年第2期17卷 566-600页

作者： Tianle liu Munerah M.S.Almutairi Jie Ma Aisling Stewart Zhaohui Xing Mengxia liu bo Hou Yuljae Cho UM-SJTU Joint Institute Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China School of Physics and Astronomy Cardiff UniversityCardiff CF243AAWalesUK Department of Electrical and Computer Engineering Yale UniversityNew HavenCT 06511USA Energy Sciences Institute Yale UniversityWest HavenCT 06516USA Future Photovoltaics Research Center Global Institute of Future TechnologyShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Electrical energy is essential for modern society to sustain economic *** soaring demand for the electrical energy,together with an awareness of the environmental impact of fossil fuels,has been driving a shift towards the utilization of solar ***,traditional solar energy solutions often require extensive spaces for a panel installation,limiting their practicality in a dense urban *** overcome the spatial constraint,researchers have developed transparent photovoltaics(TPV),enabling windows and facades in vehicles and buildings to generate electric *** TPV advancements are focused on improving both transparency and power output to rival commercially available silicon solar *** this review,we first briefly introduce wavelength-and non-wavelengthselective strategies to achieve *** of merit and theoretical limits of TPVs are discussed to comprehensively understand the status of current TPV *** we highlight recent progress in different types of TPVs,with a particular focus on solution-processed thin-film photovoltaics(PVs),including colloidal quantum dot PVs,metal halide perovskite PVs and organic *** applications of TPVs are also reviewed,with emphasis on agrivoltaics,smart windows and ***,current challenges and future opportunities in TPV research are pointed out.

关键词： Transparent semiconductors Solution-processable transparent solar cell Emerging solar cell materials Buildingintegrated photovoltaics

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Investigation of recystallization behavior of IF-steel using EBSD technique

Investigation of recystallization behavior of IF-steel using...

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第十二届全国电子显微学会议

作者： LI bo long, ZHANG ning, liu Qing (Department of Material Science and Engineering, Tsinghua university, Beijing 100084)

The orientation nucleation behavior of γ fiber of IF steel was studied using high resolution electron back scattering diffraction (EBSD) technique during annealing. The γ fiber nucleation occurs in

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Dispatchable Capability of Aggregated Electric Vehicle Charging in Distribution Systems

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Energy Engineering 2025年第1期122卷 129-152页

作者： ShiqianWang bo liu Yuanpeng Hua Qiuyan Li Binhua Tang Jianshu Zhou Yue Xiang Economic and Technology Research Institute State Grid Henan Electric Power CompanyZhengzhou450052China College of Electrical Engineering Sichuan UniversityChengdu610065China

This paper introduces a method for modeling the entire aggregated electric vehicle(EV)charging process and analyzing its dispatchable *** methodology involves developing a model for aggregated EV charging at the charging station level,estimating its physical dispatchable capability,determining its economic dispatchable capability under economic incentives,modeling its participation in the grid,and investigating the effects of different scenarios and EV penetration on the aggregated load dispatch and dispatchable *** results indicate that using economic dispatchable capability reduces charging prices by 9.7%compared to physical dispatchable capability and 9.3%compared to disorderly ***,the peak-to-valley difference is reduced by 64.6%when applying economic dispatchable capability with 20%EV penetration and residential base load,compared to disorderly charging.

关键词： Aggregated charging dispatchable capability peak shaving and valley filling the economics of charging demand response

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