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Dramatic Response to Cabozantinib in a Patient with Refractory Hepatocellular Carcinoma with c-MET Amplification 被引量:1
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作者 Yun Beom Sang Gwangil Kim +2 位作者 Sohyun Hwang Haeyoun Kang Hong Jae Chon 《Journal of Clinical and Translational Hepatology》 SCIE 2023年第3期747-750,共4页
We report a case of a patient with c-MET amplified hepato-cellular carcinoma (HCC) who had a dramatic response to cabozantinib despite being refractory to four previous lines of systemic therapy. The patient had previ... We report a case of a patient with c-MET amplified hepato-cellular carcinoma (HCC) who had a dramatic response to cabozantinib despite being refractory to four previous lines of systemic therapy. The patient had previously received re-gorafenib plus nivolumab as first-line treatment, lenvatinib as second-line, sorafenib as third-line, and ipilimumab plus nivolumab as fourth-line treatment in sequence. However, all regimens showed early progression within 2 months. The pa-tient’s HCC was well-controlled, with a partial response (PR) of over 9 months after beginning cabozantinib treatment. Although there were mild adverse events such as diarrhea and elevated liver enzymes, they were tolerable. Next-gen-eration sequencing (NGS) of the patient’s previous surgical specimen indicated amplification of c-MET genes. Although it is well known that cabozantinib has excellent effectiveness for inhibiting c-MET at the preclinical level, to the best of our knowledge this is the first case of dramatic response to cabozantinib in a patient with advanced HCC with c-MET am-plification. 展开更多
关键词 Hepatocellular carcinoma c-met amplification Cabozantinib Dra-matic response Next-generation sequencing
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Mesenchymal-epithelial transition factor amplification correlates with adverse pathological features and poor clinical outcome in colorectal cancer
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作者 Qiu-Xiao Yu Ping-Ying Fu +2 位作者 Chi Zhang Li Li Wen-Ting Huang 《World Journal of Gastrointestinal Surgery》 SCIE 2024年第5期1395-1406,共12页
BACKGROUND Colorectal cancer(CRC)is the third most common cancer and the second most common cause of cancer-related mortality worldwide.Mesenchymal-epithelial transition factor(MET)gene participates in multiple tumor ... BACKGROUND Colorectal cancer(CRC)is the third most common cancer and the second most common cause of cancer-related mortality worldwide.Mesenchymal-epithelial transition factor(MET)gene participates in multiple tumor biology and shows clinical potential for pharmacological manipulation in tumor treatment.MET amplification has been reported in CRC,but data are very limited.Investigating pathological values of MET in CRC may provide new therapeutic and genetic screening options in future clinical practice.AIM To determine the pathological significance of MET amplification in CRC and to propose a feasible screening strategy.METHODS A number of 205 newly diagnosed CRC patients undergoing surgical resection without any preoperative therapy at Shenzhen Cancer Hospital of Chinese Academy of Medical Sciences were recruited.All patients were without RAS/RAF mutation or microsatellite instability-high.MET amplification and c-MET protein expression were analyzed using fluorescence in situ hybridization(FISH)and immunohistochemistry(IHC),respectively.Correlations between MET aberration and pathological features were detected using the chi-squared test.Progression free survival(PFS)during the two-year follow-up was detected using the Kaplan-Meier method and log rank test.The results of MET FISH and IHC were com pared using one-way ANOVA.RESULTS Polysomy-induced MET amplification was observed in 14.4%of cases,and focal MET amplification was not detected.Polysomy-induced MET amplification was associated with a higher frequency of lymph node metastasis(LNM)(P<0.001)and higher tumor budding grade(P=0.02).In the survival analysis,significant difference was detected between patients with amplified-and non-amplified MET in a two-year follow-up after the first diagnosis(P=0.001).C-MET scores of 0,1+,2+,and 3+were observed in 1.4%,24.9%,54.7%,and 19.0%of tumors,respectively.C-MET overexpression correlated with higher frequency of LNM(P=0.002),but no significant difference of PFS was detected between patients with different protein levels.In terms of concordance between MET FISH and IHC results,MET copy number showed no difference in c-MET IHC 0/1+(3.35±0.18),2+(3.29±0.11)and 3+(3.58±0.22)cohorts,and the MET-to-CEP7 ratio showed no difference in three groups(1.09±0.02,1.10±0.01,and 1.09±0.03).CONCLUSION In CRC,focal MET amplification was a rare event.Polysomy-induced MET amplification correlated with adverse pathological characteristics and poor prognosis.IHC was a poor screening tool for MET amplification. 展开更多
关键词 Colorectal cancer MET amplification Pathological features Prognosis Fluorescence in situ hybridization
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Research and Application of"Soft"Devices for Realizing Servo Amplification
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作者 Shuwen Zhang Fei Meng 《Frontiers of Metallurgical Industry》 2024年第1期31-33,共3页
This article analyzes and discusses the working principle and problems encountered by various servo amplification devices used in the on-site continuous adjustment system,analyzes and discusses the application of the ... This article analyzes and discusses the working principle and problems encountered by various servo amplification devices used in the on-site continuous adjustment system,analyzes and discusses the application of the servo mechanism,and analyzes the mechanism of the servo device's implementation of the"positioning"func-tion on the control device.Intended to guide the continuous adjustment process in controlling the function/accuracy of actuator equipment and application debugging,ensuring the safe and stable operation of production equipment and facilities. 展开更多
关键词 servo amplification working mechanism APPLICATION
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Current trends in nanomaterials-mediated biosensing platforms and signal amplification strategies for antibiotics detection in dairy products
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作者 Cui-Yun Zhou Feng Jiang Chen-Xi Huang 《Food and Health》 2024年第1期28-42,共15页
Dairy products have become one of the most prevalent daily foods worldwide,but safety concerns are rising.In dairy farming,unscrupulous traders misuse antibiotics to treat some diseases such as mastitis in cows,leadin... Dairy products have become one of the most prevalent daily foods worldwide,but safety concerns are rising.In dairy farming,unscrupulous traders misuse antibiotics to treat some diseases such as mastitis in cows,leading to antibiotic residues in dairy products.Rapid,sensitive,and simple detection methods for antibiotic residues are particularly important for food safety in dairy products.Traditional detection technology can effectively detect antibiotics,but there are defects such as complicated pre-treatment and high cost.Biosensors are widely used in food safety due to fast detection speed,low detection cost,strong anti-interference ability,and suitability for the field application.Nevertheless,these sensors often fail to trigger the signal conversion output due to low target concentration.To cope with this issue,some high-efficiency signal amplification systems can be introduced to improve the detection sensitivity and linear range of biosensors.In this review,we focused on:(i)Sources and toxicity of major antibiotics in animal-derived foods.(ii)Nanomaterial-mediated biosensors for real-time detection of target antibiotics in animal-derived foods.(iii)Signal amplification techniques to increase the sensitivity of biosensors.Finally,future prospects and challenges in this research field are discussed. 展开更多
关键词 Nanosensors Signal amplification Antibiotics detection Animal-derived foods.
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Assessment of future Antarctic amplification of surface temperature change under different Scenarios from CMIP6 被引量:1
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作者 ZHU Jiang-ping XIE Ai-hong +1 位作者 QIN Xiang XU Bing 《Journal of Mountain Science》 SCIE CSCD 2023年第4期1074-1089,共16页
Global warming may result in increased polar amplification,but future temperature changes under different climate change scenarios have not been systematically investigated over Antarctica.An index of Antarctic amplif... Global warming may result in increased polar amplification,but future temperature changes under different climate change scenarios have not been systematically investigated over Antarctica.An index of Antarctic amplification(AnA)is defined,and the annual and seasonal variations of Antarctic mean temperature are examined from projections of the Coupled Model Intercomparison Project Phase 6(CMIP6)under scenarios SSP119,SSP126,SSP245,SSP370 and SSP585.AnA occurs under all scenarios,and is strongest in the austral summer and autumn,with an AnA index greater than 1.40.Although the warming over Antarctica accelerates with increased anthropogenic forcing,the magnitude of AnA is greatest in SSP126 instead of in SSP585,which may be affected by strong ocean heat uptake in high forcing scenario.Moreover,future AnA shows seasonal difference and regional difference.AnA is most conspicuous in the East Antarctic sector,with the amplification occurring under all scenarios and in all seasons,especially in austral summer when the AnA index is greater than 1.50,and the weakest signal appears in austral winter.Differently,the AnA over West Antarctica is strongest in austral autumn.Under SSP585,the temperature increase over the Antarctic Peninsula exceeds 0.5℃when the global average warming increases from 1.5℃to 2.0℃above preindustrial levels,except in the austral summer,and the AnA index in this region is strong in the austral autumn and winter.The projections suggest that the warming rate under different scenarios might make a large difference to the future AnA. 展开更多
关键词 Antarctic amplification amplification index CMIP6 ScenarioMIP Near-surface temperature Climate change
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Influence of Surface Types on the Seasonality and Inter-Model Spread of Arctic Amplification in CMIP6 被引量:1
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作者 Yanchi LIU Yunqi KONG +1 位作者 Qinghua YANG Xiaoming HU 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2023年第12期2288-2301,共14页
A robust phenomenon termed the Arctic Amplification(AA)refers to the stronger warming taking place over the Arctic compared to the global mean.The AA can be confirmed through observations and reproduced in climate mod... A robust phenomenon termed the Arctic Amplification(AA)refers to the stronger warming taking place over the Arctic compared to the global mean.The AA can be confirmed through observations and reproduced in climate model simulations and shows significant seasonality and inter-model spread.This study focuses on the influence of surface type on the seasonality of AA and its inter-model spread by dividing the Arctic region into four surface types:ice-covered,ice-retreat,ice-free,and land.The magnitude and inter-model spread of Arctic surface warming are calculated from the difference between the abrupt-4×CO_(2)and pre-industrial experiments of 17 CMIP6 models.The change of effective thermal inertia(ETI)in response to the quadrupling of CO_(2) forcing is the leading mechanism for the seasonal energy transfer mechanism,which acts to store heat temporarily in summer and then release it in winter.The ETI change is strongest over the ice-retreat region,which is also responsible for the strongest AA among the four surface types.The lack of ETI change explains the nearly uniform warming pattern across seasons over the ice-free(ocean)region.Compared to other regions,the ice-covered region shows the maximum inter-model spread in JFM,resulting from a stronger inter-model spread in the oceanic heat storage term.However,the weaker upward surface turbulent sensible and latent heat fluxes tend to suppress the inter-model spread.The relatively small inter-model spread during summer is caused by the cancellation of the inter-model spread in ice-albedo feedback with that in the oceanic heat storage term. 展开更多
关键词 Arctic amplification surface type dependence seasonal energy transfer effective thermal inertia
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Nonlinear optical imaging by detection with optical parametric amplification(invited paper) 被引量:1
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作者 Yi Sun Haohua Tu Stephen A.Boppart 《Journal of Innovative Optical Health Sciences》 SCIE EI CAS CSCD 2023年第1期5-14,共10页
Nonlinear optical imaging is a versatile tool that has been proven to be exceptionally useful in various research fields.However,due to the use of photomultiplier tubes(PMTs),the wide application of nonlinear optical ... Nonlinear optical imaging is a versatile tool that has been proven to be exceptionally useful in various research fields.However,due to the use of photomultiplier tubes(PMTs),the wide application of nonlinear optical imaging is limited by the incapability of imaging under am-bient light.In this paper,we propose and demonstrate a new optical imaging detection method based on optical parametric amplification(OPA).As a nonlinear optical process,OPA in-trinsically rejects ambient light photons by coherence gating.Periodical poled lithium niobate(PPLN)crystals are used in this study as the media for OPA.Compared to bulk nonlinear optical crystals,PPLN crystals support the generation of OPA signal with lower pump power.Therefore,this characteristic of PPLN crystals is particularly beneficial when using high-repetition-rate lasers,which facilitate high-speed optical signal detection,such as in spec-troscopy and imaging.A PPLN-based OPA system was built to amplify the emitted imaging signal from second harmonic generation(SHG)and coherent anti-Stokes Raman scattering(CARS)microscopy imaging,and the amplified optical signal was strong enough to be detected by a biased photodiode under ordinary room light conditions.With OPA detection,ambient-light-on SHG and CARS imaging becomes possible,and achieves a similar result as PMT detection under strictly dark environments.These results demonstrate that OPA can be used as a substitute for PMTs in nonlinear optical imaging to adapt it to various applications with complex.light ing conditions. 展开更多
关键词 Nonlinear optical microscopy optical parametric amplification optical detection
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Ultrathin metal-organic framework nanosheets (Cu-TCPP)-based isothermal nucleic acid amplification for food allergen detection 被引量:1
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作者 Jiale Gao Xiaodong Sun +3 位作者 Yongxin Liu Bing Niu Qin Chen Xueen Fang 《Food Science and Human Wellness》 SCIE CSCD 2023年第5期1788-1798,共11页
The rapid and accurate detection of peanuts and soybeans allergen is important to the food safety. In this study, Cu-TCPP nanosheet, a kind of ultra-thin metal-organic framework(MOF)was synthesized and applied in loop... The rapid and accurate detection of peanuts and soybeans allergen is important to the food safety. In this study, Cu-TCPP nanosheet, a kind of ultra-thin metal-organic framework(MOF)was synthesized and applied in loop-mediated isothermal amplification(named Cu-TCPP@LAMP), which can inhibit the non-specific amplification by absorbing and precise temperature releasing of single primer. As thus, Cu-TCPP@LAMP can achieve high sensitivity and specific amplification of the target gene. As a result, peanut and soybean allergens genes contained in food were successfully detected with a favorable detection sensitivity(5 ng/μL for peanuts and 10 ng/μL for soybeans)and reliable repeatability(The coefficient of variation was 3.38% for peanuts and 3.33% for soybeans). Moreover, the established method was utilized for detection of several commercial products, and had a high consistency with the standard method. Apart from food allergens, this novel assay can be widely used in other areas, such as pathogen detection, tumor nucleic acid detection and so on. 展开更多
关键词 Cu-TCPP nanosheet Plant allergen Nucleic acid detection Loop-mediated isothermal amplification
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Research progress and prospects of nucleic acid isothermal amplification technology
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作者 SHUHUI WU PING XU +1 位作者 XIANGBIN XU SONG-BAI LIU 《BIOCELL》 SCIE 2023年第11期2385-2395,共11页
Nucleic acid(DNA and RNA)detection and quantification methods play vital roles in molecular biology.With the development of molecular biology,isothermal amplification of DNA/RNA,as a new molecular biology technology,c... Nucleic acid(DNA and RNA)detection and quantification methods play vital roles in molecular biology.With the development of molecular biology,isothermal amplification of DNA/RNA,as a new molecular biology technology,can be amplified under isothermal condition,it has the advantages of high sensitivity,high specificity,and high efficiency,and has been applied in various fields of biotechnology,including disease diagnosis,pathogen detection,food hygiene and safety detection and so on.This paper introduces the progress of isothermal amplification technology,including rolling circle amplification(RCA),nucleic acid sequence-dependent amplification(NASBA),strand displacement amplification(SDA),loop-mediated isothermal amplification(LAMP),helicase-dependent amplification(HDA),recombinase polymerase amplification(RPA),cross-priming amplification(CPA),and its principle,advantages and disadvantages,and application development are briefly summarized. 展开更多
关键词 Isothermal amplification Rolling circle amplification Nucleic acid sequence-based amplification Strand displacement amplification Loop-mediated isothermal amplification Helicase-dependent amplification Recombinase polymerase amplification Cross-primer amplification
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Enhanced phase sensitive amplification towards improving noise immunity
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作者 郭辉 李治 +2 位作者 孙恒信 刘奎 郜江瑞 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第5期126-130,共5页
Quantum states are essential resource for quantum-enhanced applications.Loss incurred in the distribution channel,however,dissipates the high signal-to-noise ratio advantage enjoyed by the squeezed state.Here,we first... Quantum states are essential resource for quantum-enhanced applications.Loss incurred in the distribution channel,however,dissipates the high signal-to-noise ratio advantage enjoyed by the squeezed state.Here,we first demonstrate noise immunity enhancement by using phase-sensitive amplifier(PSA)with measurement-based noiseless linear amplifier(MB-NLA).We explore the signal transfer capability with the amplifier in a noisy channel.The MB-NLA enhanced PSA has obvious suppression effect on channel noises,especially it has improvement for the noise contaminated signal.Better performance can be achieved by flexibly adjusting amplifier parameters.With the amplifier,it is promising to overcome the entanglement-distribution loss and show its superiority in squeezing based quantum sensing. 展开更多
关键词 phase sensitive amplification noiseless linear amplification quantum sensing
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黄芪建中汤对脾胃虚寒证胃溃疡大鼠炎症因子及HGF/c-Met信号通路的影响
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作者 韩运宗 陈思清 +3 位作者 刘琴 周姝 蔺晓源 周赛男 《中国中医急症》 2024年第1期22-26,共5页
目的观察黄芪建中汤对脾胃虚寒证胃溃疡大鼠炎症因子及HGF/c-Met信号通路的影响。方法将60只大鼠随机分为4组,即正常组、模型组、黄芪建中汤组[黄芪建中汤6.8 g/(kg·d)]、奥美拉唑组[奥美拉唑肠溶胶囊4.2 mg/(kg·d)],每组15... 目的观察黄芪建中汤对脾胃虚寒证胃溃疡大鼠炎症因子及HGF/c-Met信号通路的影响。方法将60只大鼠随机分为4组,即正常组、模型组、黄芪建中汤组[黄芪建中汤6.8 g/(kg·d)]、奥美拉唑组[奥美拉唑肠溶胶囊4.2 mg/(kg·d)],每组15只大鼠。正常组除外,其他组采用耗气破气法结合饥饱失常法进行大鼠脾胃虚寒证模型造模,再采用冰醋酸法建立大鼠胃溃疡模型。比较各组大鼠体质量、溃疡指数;HE染色观察大鼠胃组织病理学变化;采用酶联免疫吸附法检测血清中白细胞介素-6(IL-6)、白细胞介素-1β(IL-1β)、肿瘤坏死因子-α(TNF-α)含量;免疫组化法检测胃组织中肝细胞生长因子(HGF)、肝细胞生长因子受体(c-Met)表达;荧光定量PCR检测胃组织HGF、c-Met m RNA水平。结果与正常组相比,模型组大鼠体质量降低,溃疡指数升高,IL-6、IL-1β、TNF-α含量升高,HGF升高,HGF、c-Met m RNA升高(P<0.05);与模型组相比,黄芪建中汤组和奥美拉唑组大鼠体质量升高,溃疡指数降低,IL-6、IL-1β、TNF-α降低,HGF升高,HGF、c-Met mRNA升高(P<0.05)。结论黄芪建中汤可以通过抑制炎症因子、调节HGF/c-Met通路的表达促进胃黏膜修复。 展开更多
关键词 胃溃疡 黄芪建中汤 脾胃虚寒证 HGF/c-met通路 大鼠
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Influence of coupling asymmetry on signal amplification in a three-node motif
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作者 梁晓明 方超 +1 位作者 张希昀 吕华平 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第1期239-243,共5页
The three-node feedforward motif has been revealed to function as a weak signal amplifier. In this motif, two nodes(input nodes) receive a weak input signal and send it unidirectionally to the third node(output node).... The three-node feedforward motif has been revealed to function as a weak signal amplifier. In this motif, two nodes(input nodes) receive a weak input signal and send it unidirectionally to the third node(output node). Here, we change the motif's unidirectional couplings(feedforward) to bidirectional couplings(feedforward and feedback working together).We find that a small asymmetric coupling, in which the feedforward effect is stronger than the feedback effect, may enable the three-node motif to go through two distinct dynamic transitions, giving rise to a double resonant signal response. We present an analytical description of the double resonance, which agrees with the numerical findings. 展开更多
关键词 network motif SYNCHRONIZATION coupling asymmetry signal amplification
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Development and Characterization of Microsatellite Markers for Harpadon nehereus Based on High-Throughput Sequencing and Cross-Species Amplification in Three Myctophiformes Fishes
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作者 HUANG Xinxin NING Zijun YANG Tianyan 《Journal of Ocean University of China》 SCIE CAS CSCD 2023年第1期181-188,共8页
Harpadon nehereus is a widespread economical fish found in the coastal seas of China and has important ecological value in the marine ecosystem.H_(o)wever,its germplasm resources have been seriously degraded due to na... Harpadon nehereus is a widespread economical fish found in the coastal seas of China and has important ecological value in the marine ecosystem.H_(o)wever,its germplasm resources have been seriously degraded due to natural factors and anthropogenic activities.In this study,high-throughput sequencing was applied to search for microsatellite loci in H.nehereus transcriptome to provide references for its resource conservation and utilization.Polymorphic loci were developed by non-denaturing polyacrylamide gel electrophoresis,and their cross-species amplified ability was detected in three related species.A total of 5652 microsatellites were identified from 16974320 unigenes.Among the primer pairs designed for 100 SSRs for PCR amplification,80%were successfully amplified,and 26 loci were polymorphic with a high number of alleles from 3 to 11 each.The expected(H_(e))and observed(H_(o))heterozygosities were 0.355–0.885 and 0.375–0.958,respectively.Most of the loci were highly polymorphic(polymorphism information content:0.316–0.852;mean:0.713),and these markers can be applied in the population genetic diversity research of H.nehereus.H_(o)wever,the transferability of these primers was low,probably because of the close relation of the collected species.In follow-up work,simple sequence repeats will be excavated with genome-based technologies,and related species will be gathered to address the present inadequacies. 展开更多
关键词 Harpadon nehereus microsatellite markers high-throughput sequencing cross-species amplification
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Dissipation and amplification management in an electrical model of microtubules: Hybrid behavior network
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作者 Sedric Ndoungalah Guy Roger Deffo +1 位作者 Arnaud Djine Serge Bruno Yamgoue 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第11期392-400,共9页
The control of dissipation and amplification of solitary waves in an electrical model of a microtubule is demonstrated.This model consists of a shunt nonlinear resistance–capacitance(J(V)–C(V)) circuit and a series ... The control of dissipation and amplification of solitary waves in an electrical model of a microtubule is demonstrated.This model consists of a shunt nonlinear resistance–capacitance(J(V)–C(V)) circuit and a series resistance–inductance(R–L) circuit. Through linear dispersion analysis, two features of the network are found, that is, low bandpass and bandpass filter characteristics. The effects of the conductance’s parameter λ on the linear dispersion curve are also analyzed. It appears that an increase of λ induces a decrease(an increase) of the width of the bandpass filter for positive(negative) values of λ. By applying the reductive perturbation method, we derive the equation governing the dynamics of the modulated waves in the system. This equation is the well-known nonlinear Schr?dinger equation extended by a linear term proportional to a hybrid parameter σ, i.e., a dissipation or amplification coefficient. Based on this parameter, we successfully demonstrate the hybrid behavior(dissipation and amplification) of the system. The exact and approximate solitary wave solutions of the obtained equation are derived, and the effects of the coefficient σ on the characteristic parameters of these waves are investigated. Using the analytical solutions found, we show numerically that the waves that are propagated throughout the system can be dissipated, amplified, or remain stable depending on the network parameters. These results are not only in agreement with the analytical predictions, but also with the existing experimental results in the literature. 展开更多
关键词 MICROTUBULE dissipation and amplification hybrid behavior solitary wave solutions
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基于转录组测序探究C-MET表达在非小细胞肺癌中的免疫调控机制
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作者 徐越 张言斌 苏珊 《实用医学杂志》 CAS 北大核心 2024年第1期7-12,共6页
目的通过转录组测序技术分析C-MET表达在非小细胞肺癌中的免疫调控机制。方法使用siRNA分子干扰技术将C-MET高表达肺腺癌细胞株(H1993)、肺鳞癌细胞株(EBC-1)的C-MET表达沉默,利用转录组测序技术检测C-MET沉默前后细胞差异表达的基因(DE... 目的通过转录组测序技术分析C-MET表达在非小细胞肺癌中的免疫调控机制。方法使用siRNA分子干扰技术将C-MET高表达肺腺癌细胞株(H1993)、肺鳞癌细胞株(EBC-1)的C-MET表达沉默,利用转录组测序技术检测C-MET沉默前后细胞差异表达的基因(DEGs),通过生物信息学分析挖掘出C-MET可能参与调控的免疫微环境信号通路及相关基因。最后使用人免疫细胞与H1993、EBC-1共培养技术验证C-MET对免疫因子(INF-γ、INF-β、CXCL-10)的影响。结果通过转录组测序技术共检测到505个DEGs,其中H1993的C-MET调控前后表达差异组的表达差异基因共有38个,上调的差异表达基因有24个,下调的差异表达基因有14个。EBC-1的C-MET调控前后表达差异组的表达差异基因共有467个,上调的差异表达基因有347个,下调的差异表达基因121个。差异基因的KEGG分析表明,C-MET表达可能通过白细胞介素(IL-17)信号通路、白细胞分化、细胞因子受体活性、细胞周期、细胞因子-细胞因子受体相互作用参与免疫细胞调节因子的调控。使用肺癌细胞与人免疫细胞共同培养技术验证C-MET对免疫因子分泌的影响,Rt-qPCR检测结果提示:与C-MET高表达组共培养的PBMC中干扰素(INF-γ)的m RNA转录水平是低表达组的77倍、CXCL-10的mRNA转录水平是低表达组的1.6倍,INF-β的mRNA转录水平是低表达组的2倍。结论C-MET表达可能通过IL-17信号通路、白细胞分化、细胞因子受体活性通路参与肿瘤周围免疫微环境调控。 展开更多
关键词 非小细胞肺癌 c-met 免疫微环境 表达谱测序
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Personal glucose meters coupled with signal amplification technologies for quantitative detection of non-glucose targets:Recent progress and challenges in food safety hazards analysis
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作者 Feng He Haijie Wang +7 位作者 Pengfei Du Tengfei Li Weiting Wang Tianyu Tan Yaobo Liu Yanli Ma Yuanshang Wang A.M.Abd El-Aty 《Journal of Pharmaceutical Analysis》 SCIE CAS CSCD 2023年第3期223-238,共16页
Ensuring food safety is paramount worldwide.Developing effective detection methods to ensure food safety can be challenging owing to trace hazards,long detection time,and resource-poor sites,in addition to the matrix ... Ensuring food safety is paramount worldwide.Developing effective detection methods to ensure food safety can be challenging owing to trace hazards,long detection time,and resource-poor sites,in addition to the matrix effects of food.Personal glucose meter(PGM),a classic point-of-care testing device,possesses unique application advantages,demonstrating promise in food safety.Currently,many studies have used PGM-based biosensors and signal amplification technologies to achieve sensitive and specific detection of food hazards.Signal amplification technologies have the potential to greatly improve the analytical performance and integration of PGMs with biosensors,which is crucial for solving the challenges associated with the use of PGMs for food safety analysis.This review introduces the basic detection principle of a PGM-based sensing strategy,which consists of three key factors:target recognition,signal transduction,and signal output.Representative studies of existing PGM-based sensing strategies combined with various signal amplification technologies(nanomaterial-loaded multienzyme labeling,nucleic acid reaction,DNAzyme catalysis,responsive nanomaterial encapsulation,and others)in the field of food safety detection are reviewed.Future perspectives and potential opportunities and challenges associated with PGMs in the field of food safety are discussed.Despite the need for complex sample preparation and the lack of standardization in the field,using PGMs in combination with signal amplification technology shows promise as a rapid and cost-effective method for food safety hazard analysis. 展开更多
关键词 Food safety Personal glucose meter Signal amplification Point-of-care testing Detection principle
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宫颈癌患者癌组织c-Met mRNA与NF-κB mRNA表达的关系及其对预后的影响
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作者 刘占军 郑莹莹 +1 位作者 杜鹃 张云清 《中南医学科学杂志》 CAS 2024年第2期210-213,共4页
目的分析肝细胞生长因子受体原癌基因c-Met mRNA与核因子-κB(NF-κB)mRNA在宫颈癌发病中的关系及对宫颈癌患者预后的影响。方法选取本院宫颈癌患者89例作为癌变组,宫颈癌前病变患者89例作为癌前病变组,因子宫肌瘤行全子宫切除患者89例... 目的分析肝细胞生长因子受体原癌基因c-Met mRNA与核因子-κB(NF-κB)mRNA在宫颈癌发病中的关系及对宫颈癌患者预后的影响。方法选取本院宫颈癌患者89例作为癌变组,宫颈癌前病变患者89例作为癌前病变组,因子宫肌瘤行全子宫切除患者89例作为正常宫颈组。采用RT-PCR检测3组宫颈组织中c-Met、NF-κB mRNA相对表达量。采用Spearman/Pearson分析c-Met mRNA与NF-κB mRNA在宫颈癌发病中的关系。采用Kaplan-Meier曲线分析不同c-Met mRNA、NF-κB mRNA表达水平患者的3年生存率。结果宫颈组织中c-Met、NF-κB mRNA相对表达量,癌变组>癌前病变组>正常宫颈组(P<0.05)。癌前病变组、癌变组c-Met mRNA与NF-κB mRNA呈正相关(P<0.001)。c-Met高表达与NF-κB mRNA高表达在宫颈癌发病中呈正向交互作用(P<0.05)。c-Met、NF-κB mRNA与宫颈癌临床分期、淋巴结转移、脉管浸润呈正相关,与分化程度呈负相关(P<0.05)。癌变组c-Met、NF-κB mRNA高表达患者3年生存率低于低表达患者(P<0.05)。结论c-Met mRNA与NF-κB mRNA高表达在宫颈癌发病中呈正向交互作用,与临床分期、淋巴结转移、脉管浸润呈正相关,且宫颈癌患者3年生存率显著降低。 展开更多
关键词 宫颈癌 发病风险 肝细胞生长因子受体原癌基因c-met 核因子-κB 预后
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Revealing the contribution of basilar membrane's biological activity to the mechanism of the cochlear phonosensitive amplification
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作者 J.Y.LIANG Wenjuan YAO 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI CSCD 2023年第5期823-840,共18页
Explaining the mechanism of the cochlear active phonosensitive amplification has been a major problem in medicine.The basilar membrane(BM)is the key infrastructure.In 1960,Nobel Laureate von B′ek′esy first discovere... Explaining the mechanism of the cochlear active phonosensitive amplification has been a major problem in medicine.The basilar membrane(BM)is the key infrastructure.In 1960,Nobel Laureate von B′ek′esy first discovered BM's traveling wave motion.Since that time,BM's models only have considered the traveling wave but not the biological activity.Therefore,a new model considering changes of BM's stiffness in space and time is established based on the immersed boundary method to describe its biological activity.It not only reproduces the results of traveling wave motion but also explains the mechanization on the generation of traveling wave.An important discovery is that changes of BM's stiffness in space and time will cause the unstable global resonance,which will induce amplification of sounds in cochlea.An important inference is that biological activity shall be included in the application of mechanical principles to the analysis of life,which is the essential difference between biomechanics and general mechanics. 展开更多
关键词 basilar membrane(BM) biological activity mechanical analysis cochlear phonosensitive amplification
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Role of Ocean Dynamics in the Seasonal Hadley Cell:A Response to Idealized Arctic Amplification
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作者 Haijin DAI Qiang YAO 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2023年第12期2211-2223,共13页
How atmospheric and oceanic circulations respond to Arctic warming at different timescales are revealed with idealized numerical simulations.Induced by local forcing and feedback,Arctic warming appears and leads to se... How atmospheric and oceanic circulations respond to Arctic warming at different timescales are revealed with idealized numerical simulations.Induced by local forcing and feedback,Arctic warming appears and leads to sea-ice melting.Deep-water formation is inhibited,which weakens the Atlantic Meridional Overturning Circulation(AMOC).The flow and temperature in the upper layer does not respond to the AMOC decrease immediately,especially at mid-low latitudes.Thus,nearly uniform surface warming in mid-low latitudes enhances(decreases)the strength(width)of the Hadley cell(HC).With the smaller northward heat carried by the weaker AMOC,the Norwegian Sea cools significantly.With strong warming in Northern Hemisphere high latitudes,the long-term response triggers the“temperature-wind-gyre-temperature”cycle,leading to colder midlatitudes,resulting in strong subsidence and Ferrel cell enhancement,which drives the HC southward.With weaker warming in the tropics and stronger warming at high latitudes,there is a stronger HC with decreased width.A much warmer Southern Hemisphere appears due to a weaker AMOC that also pushes the HC southward.Our idealized model results suggest that the HC strengthens under both warming conditions,as tropical warming determines the strength of the HC convection.Second,extreme Arctic warming led by artificially reduced surface albedo decreases the meridional temperature gradient between high and low latitudes,which contracts the HC.Third,a warmer mid-high latitude in the Northern(Southern)Hemisphere due to surface albedo feedback(weakened AMOC)in our experiments pushes the HC northward(southward).In most seasons,the HC exhibits the same trend as that described above. 展开更多
关键词 Hadley cell Arctic amplification Southern Hemisphere warming Atlantic Meridional Overturning Circulation
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CTC、RON及c-Met在早期三阴性乳腺癌预后预测中的作用
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作者 叶露 张明芳 +1 位作者 孙萍 张园园 《分子诊断与治疗杂志》 2024年第3期490-493,502,共5页
目的 分析循环肿瘤细胞(CTC)、受体酪氨酸激酶(RON)及间质表皮转化因子(c-Met在早期三阴性乳腺癌(TNBC)预后预测中的作用。方法 分析2018年1月至2021年1月于郑州大学第一附属医院进行诊治的1 225例乳腺癌患者资料,根据纳入标准最终选取... 目的 分析循环肿瘤细胞(CTC)、受体酪氨酸激酶(RON)及间质表皮转化因子(c-Met在早期三阴性乳腺癌(TNBC)预后预测中的作用。方法 分析2018年1月至2021年1月于郑州大学第一附属医院进行诊治的1 225例乳腺癌患者资料,根据纳入标准最终选取168例TNBC患者设为研究组,选取患者癌旁3 cm的组织为对照组,另选取同时期在本院进行健康体检者168名为健康组。根据患者治疗后的预后情况将研究组分为预后良好组(n=142)以及预后不良组(n=26)。比较研究组与健康组CTC的表达情况,比较研究组与对照组c-Met与RON的表达情况,采用多元Logistic回归分析影响TNBC预后的独立危险因素;并通过受试者工作特征曲线(ROC)分析c-Met、RON、CTC对TNBC患者预后的预测价值。结果 研究组CTC水平高于健康组,差异有统计学意义(P<0.05);研究组c-Met与RON阳性表达高于对照组,差异有统计学意义(P<0.05);预后良好组、预后不良组年龄、肿瘤直径比较差异无统计学意义(P>0.05),预后良好组、预后不良组腋窝淋巴结、体重指数、糖尿病、RON、c-Met、CTC比较,差异有统计学意义(P<0.05),经非条件多因素logistic回归模型分析显示,腋窝淋巴结转移、CTC阳性、RON阳性、c-Met阳性为TNBC患者预后的危险因素(P<0.05)。CTC、RON及c-Met单独检测以及三者联合检测AUC分别为0.764、0.778、0.776、0.857,其中三者联合检测AUC值最大。结论 联合检测RON、c-MET、CTC水平对TNBC患者预后具有一定的预测价值。 展开更多
关键词 CTC RON c-met 三阴乳腺癌
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