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Comparative Study of Intrachain versus Interchain Cross-linking on the Mechanical,Thermal and Dielectric Properties of Low-k Polyimide

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Chinese Journal of Polymer Science 2024年第11期 1824-1834页

作者： Wan-Jing Zhao Yi-Zhang Tong Pei-Pei Zeng Yang-sheng Zhou Xian-wu Cao Wei wu National Engineering Research Center of Novel Equipment for Polymer Processing Key Laboratory of Polymer Processing Engineering of Ministry of EducationGuangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing School of Mechanical and Automotive Engineering South China University of Technology Guangdong Provincial Key Laboratory of Distributed Energy Systems Guangdong Provincial Engineering Research Center of Distributed Energy SystemsDongguan University of Technology Engineering Center for Superlubricity Jihua Laboratory

Polyimide (PI) is widely used in high-frequency communication technology due to its exceptional comprehensive ***,traditional PI has a relatively elevated dielectric constant and dielectric ***,the different cross-linked structures were introduced in PI matrix and conducted a detailed discussion on the influence of cross-linking agent content and cross-linking structure type on the overall performance of PI *** comparison to the dielectric constant of 2.9 of neat PI,PI with an interchain cross-linking structure containing 2 wt%1,3,5-tris(4-aminophenyl)benzene (TAPB)(interchain-PI-2) exhibited the reduced dielectric constant of 2.55 at 1 *** PI films with intrachain crosslinking structure containing 2 wt%TAPB (intrachain-PI-2) exhibited the lowest dielectric constant of 2.35 and the minimum dielectric loss of0.0075 at 1 *** was due to the more entanglement junctions of intrachain-PI resulting in decreased carrier *** thermal expansion coefficients of both interchain-PI and intrachain-PI films were effectively ***,in contrast to interchain-PI films,the intrachain-PI films maintained colorlessness and transparency as the cross-linking agent content *** work compared the effects of two different cross-linked structures on the performance of PI films and provided a feasible way to obtain low-k PI films with excellent comprehensive performance for 5G applications.

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Plasma metabolites and risk of myocardial infarction:a bidirectional Mendelian randomization study

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Journal of Geriatric Cardiology 2024年第2期21卷 219-231页

作者： Dong-Hua LI Qiang wu Jing-sheng LAN Shuo CHEN You-Yi HUANG Lan-Jin wu Zhi-Qing QIN Ying HUANG Wan-Zhong HUANG Ting ZENG Xin HAO Hua-Bin SU Qiang SU Department of Cardiovascular Medicine Minzu Hospital of Guangxi Zhuang Autonomous RegionGuangxiChina Senior Department of Cardiology the Sixth Medical CenterChinese PLA General HospitalBeijingChina Library of Graduate School Chinese PLA General HospitalBeijingChina Department of Cardiology Jiangbin Hospital of Guangxi Zhuang Autonomous RegionGuangxiChina Health Management Institute the Second Medical CenterChinese PLA General HospitalBeijingChina

BACKGROUND Myocardial infarction(MI)is a critical cardiovascular event with multifaceted etiology,involving several genetic and environmental *** is essential to understand the function of plasma metabolites in the development of MI and unravel its complex *** This study employed a bidirectional Mendelian randomization(MR)approach to investigate the causal relationships between plasma metabolites and MI *** used genetic instruments as proxies for plasma metabolites and MI and conducted MR analyses in both directions to assess the impact of metabolites on MI risk and vice *** addition,the large-scale genome-wide association studies datasets was used to identify genetic variants associated with plasma metabolite(1400 metabolites)and MI(20,917 individuals with MI and 440,906 individuals without MI)*** variance weighted was the primary method for estimating causal *** estimates are expressed as beta coefficients or odds ratio(OR)with 95%*** We identified 14 plasma metabolites associated with the occurrence of MI(P<0.05),among which 8 plasma metabolites[propionylglycine levels(OR=0.922,95%CI:0.881–0.965,P<0.001),gamma-glutamylglycine levels(OR=0.903,95%CI:0.861–0.948,P<0.001),hexadecanedioate(C16-DC)levels(OR=0.941,95%CI:0.911–0.973,P<0.001),pentose acid levels(OR=0.923,95%CI:0.877–0.972,P=0.002),X-24546 levels(OR=0.936,95%CI:0.902–0.971,P<0.001),glycine levels(OR=0.936,95%CI:0.909–0.964,P<0.001),glycine to serine ratio(OR=0.930,95%CI:0.888–0.974,P=0.002),and mannose to trans-4-hydroxyproline ratio(OR=0.912,95%CI:0.869–0.958,P<0.001)]were correlated with a decreased risk of MI,whereas the remaining 6 plasma metabolites[1-palmitoyl-2-arachidonoyl-GPE(16:0/20:4)levels(OR=1.051,95%CI:1.018–1.084,P=0.002),behenoyl dihydrosphingomyelin(d18:0/22:0)levels(OR=1.076,95%CI:1.027–1.128,P=0.002),1-stearoyl-2-docosahexaenoyl-GPE(18:0/22:6)levels(OR=1.067,95%CI:1.027–1.109,P=0.001),alpha-ketobutyrate levels(OR=1.108,95%

关键词： infarction alterations diagnosis

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Comparative Analysis of Noise Margin between Pure SET-SET and Hybrid SET-PMOS Inverters

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Chinese Journal of Electronics 2024年

作者： Fan ZHANG Yi LIU Yibo WANG Minghu wu sheng HU Youli DONG Hubei Key Laboratory for High-Efficiency Utilization of Solar Energy and Operation Control of Energy Storage System Hubei University of Technology School of Electrical and Electronic Engineering Hubei University of Technology

Single-electron transistor（SET） is considered as one of the promising candidates for future electronic devices due to its advantages of low power consumption and high integration. The comparative analysis of SETbased inverters, especially the noise margin, is carried out. Pure SET-SET and hybrid SET with p type metal oxide semiconductor（SET-PMOS） inverters are designed for investigation. The effects of SET supply voltage, junction resistance and junction capacitance on noise tolerance and power consumption of inverters are studied. For hybrid SET-PMOS inverters, the noise margin for a logic high（NMH） is less than 60 mV under various conditions, which may become the bottleneck of its application. For pure SET-SET inverters, both NMH and the noise margin for a logic low（NML） could reach 300 mV at a supply voltage of 0.8 V. The minimum power consumption of pure SETSET and hybrid SET-PMOS inverters is 2.85 nW and 58 nW, respectively. The pure SET-SET inverters have greater noise tolerance and lower power consumption, which is more conducive to large-scale integration. When junction capacitance CJ= 0.0273 aF and junction resistance V, the NMH and NML are not significantly affected by the junction resistance and the noise margin fluctuates at 300mV.

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Efficacy of hepatic arterial infusion chemotherapy and its combination strategies for advanced hepatocellular carcinoma:A network meta-analysis

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World Journal of Gastrointestinal Oncology 2024年第8期16卷 3672-3686页

作者： Shun-An Zhou Qing-Mei Zhou Lei wu Zhi-Hong Chen Fan wu Zhen-Rong Chen Lian-Qun Xu Bi-LingGan Hao-sheng Jin Ning Shi Department of General Surgery Guangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhou 510000Guangdong ProvinceChina Department of Geriatrics Ganzhou Hospital-Nanfang HospitalSouthern Medical UniversityGanzhou 341000Jiangxi ProvinceChina Guangdong Cardiovascular Institute Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhou 510000Guangdong ProvinceChina Department of Liver Surgery Peking Union Medical College HospitalChinese Academy of Medical Science and Peking Union Medical CollegeBeijing 100730China

BACKGROUND With the rapid progress of systematic therapy for hepatocellular carcinoma(HCC),therapeutic strategies combining hepatic arterial infusion chemotherapy(HAIC)with systematic therapy arised increasing ***,there have been no systematic review comparing HAIC and its combination strategies in the first-line treatment for advanced *** To investigate the efficacy and safety of HAIC and its combination therapies for advanced *** A network meta-analysis was performed by including 9 randomized controlled trails and 35 cohort studies to carry out our *** outcomes of interest comprised overall survival(OS),progression-free survival(PFS),tumor response and adverse *** ratios(HR)and odds ratios(OR)with a 95% confidence interval(CI)were calculated and agents were ranked based on their ranking *** HAIC outperformed Sorafenib(HR=0.55,95%CI:0.42-0.72;HR=0.51,95%CI:0.33-0.78;OR=2.86,95%CI:1.37-5.98;OR=5.45,95%CI:3.57-8.30;OR=7.15,95%CI:4.06-12.58;OR=2.89,95%CI:1.99-4.19;OR=0.48,95%CI:0.25-0.92,respectively)and transarterial chemoembolization(TACE)(HR=0.50,95%CI:0.33-0.75;HR=0.62,95%CI:0.39-0.98;OR=3.08,95%CI:1.36-6.98;OR=2.07,95%CI:1.54-2.80;OR=3.16,95%CI:1.71-5.85;OR=2.67,95%CI:1.59-4.50;OR=0.16,95%CI:0.05-0.54,respectively)in terms of efficacy and ***+lenvatinib+ablation,HAIC+ablation,HAIC+anti-programmed cell death 1(PD-1),and HAIC+radiotherapy had the higher likelihood of providing better OS and PFS outcomes compared to HAIC ***+TACE+S-1,HAIC+lenvatinib,HAIC+PD-1,HAIC+TACE,and HAIC+sorafenib had the higher likelihood of providing better partial response and objective response rate outcomes compared to ***+PD-1,HAIC+TACE+S-1 and HAIC+TACE had the higher likelihood of providing better complete response and disease control rate outcomes compared to HAIC *** HAIC proved more effective and safer than sorafenib and ***,combined with other interventions,HAIC showed imp

关键词： Hepatic arterial infusion chemotherapy Hepatocellular carcinoma Network meta-analysis Interventional therapy Systemic treatment

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Pig H3K4me3,H3K27ac,and gene expression profiles reveal reproductive tissue-specific activity of transposable elements

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Zoological Research 2024年第1期45卷 138-151页

作者： Tao Jiang Zhi-Min Zhou Zi-Qi Ling Qing Zhang Zhong-Zi wu Jia-Wen Yang Si-Yu Yang Bin Yang Lu-sheng Huang National Key Laboratory of Pig Genetic Improvement and Germplasm Innovation Jiangxi Agricultural UniversityNanchangJiangxi 330045China

Regulatory sequences and transposable elements(TEs)account for a large proportion of the genomic sequences of species;however,their roles in gene transcription,especially tissue-specific expression,remain largely *** serve as an excellent animal model for studying genomic sequence biology due to the extensive diversity among their wild and domesticated ***,we conducted an integrated analysis using H3K27ac ChIP-seq,H3K4me3 ChIP-seq,and RNA-seq data from 10 different tissues of seven fetuses and eight closely related adult *** aimed to annotate the regulatory elements and TEs to elucidate their associations with histone modifications and mRNA expression across different tissues and developmental *** on correlation analysis between mRNA expression and H3K27ac and H3K4me3 peak activity,results indicated that H3K27ac exhibited stronger associations with gene expression than ***,1.45%of TEs overlapped with either the H3K27ac or H3K4me3 peaks,with the majority displaying tissue-specific ***,a TE subfamily(LTR4C_SS),containing binding motifs for SIX1 and SIX4,showed specific enrichment in the H3K27ac peaks of the adult and fetal ***-seq analysis also revealed widespread expression of TEs in the exons or promoters of genes,including 4688 TE-containing transcripts with distinct development stage-specific and tissue-specific *** note,1967 TE-containing transcripts were enriched in the *** identified a long terminal repeat(LTR),MLT1F1,acting as a testis-specific alternative promoter in SRPK2(a cell cycle-related protein kinase)in our pig *** element was also conserved in humans and mice,suggesting either an ancient integration of TEs in genes specifically expressed in the testes or parallel evolutionary ***,our findings demonstrate that TEs are deeply embedded in the genome and exhibit important tissue-specific biological functions,particularly in the reproductive

关键词： Transposable elements Porcine Histone modification Alternative promoter TE-containing transcript

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Optical colorimetric LiTaO_(3)wafers for highprecision lithography on frequency control of SAW devices

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Photonics Research 2024年第2期12卷 341-349页

作者： MING HUI FANG YINONG XIE FANGQI XUE ZHILIN wu JUN SHI sheng YU YANG YILIN LIU ZHIHUANG LIU HSIN CHI WANG FAJUN LI QING HUO LIU JINFENG ZHU School of Electronic Science and Engineering Xiamen UniversityXiamen 361005China Quanzhou San’an Integrated Circuit Co. Ltd.Quanzhou 362300China Eastern Institute of Technology Ningbo 315200China

Surface acoustic wave(SAW)resonators based on lithium tantalate(LT,LiTaO_(3))wafers are crucial elements of mobile communication *** use of intrinsic LT wafers typically brings about low fabrication accuracy of SAW resonators due to strong UV reflection in the lithography *** hinders their resonance frequency control seriously in industrial *** doping and chemical reduction could be applied to decrease the UV reflection of LT wafers for high lithographic ***,conventional methods fail to provide a fast and nondestructive approach to identify the UV performance of standard single-side polished LT wafers for highprecision frequency ***,we propose a convenient on-line sensing scheme based on the colorimetry of reduced Fe-doped LT wafers and build up an automatic testing system for industrial *** levels of Fe doping and chemical reduction are evaluated by the lightness and color difference of LT-based *** correlation between the wafer visible colorimetry and UV reflection is established to refine the lithography process and specifically manipulate the frequency performance of SAW *** study provides a powerful tool for the fabrication control of SAW resonators and will inspire more applications on sophisticated devices of mobile communication.

关键词： lithography doping wafer

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Benchmark Dose for Dioxin Based on Gestational Diabetes Mellitus Using Coexposure Statistical Methods and an Optimized Physiologically Based Toxicokinetic Model

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Environment & Health 2024年第9期2卷 661-671页

作者： Tao Ying Xin Liu Lei Zhang Wencheng Cao sheng Wen Yongning wu Gengsheng He Jingguang Li School of Public Health Key Laboratory of Public Health Safety of the Ministry of EducationFudan UniversityShanghai 200032China NHC Key Laboratory of Food Safety Risk Assessment Chinese Academy of Medical Science Research Unit(No.2019RU014)China National Center for Food Safety Risk AssessmentBeijing 100021China Key Laboratory for Deep Processing of Major Grain and Oil(The Chinese Ministry of Education) College of Food Science and EngineeringWuhan Polytechnic UniversityWuhan 430023China China Hubei Provincial Center for Disease Control and Prevention Hubei Provincial Academy of Preventive MedicineHubei 430023China

Dioxins are ubiquitous endocrine-disrupting substances,but determining the effects and benchmark doses in situations of coexposure is highly *** objective of this study was to assess the relationship between dioxin andgestational diabetes mellitus(GDM),calculate the benchmark dose(BMD)of dioxin in coexposure scenarios,and derive a daily exposure threshold using an optimized physiologically based toxicokinetic(PBTK)*** on a nested casecontrol study including 77 cases with GDM and 154 controls,serum levels of 29 dioxin-like compounds(DLCs)along with 10 perfluoroalkyl acids(PFAAs),seven polybrominated diphenyl ethers(PBDEs),and five non-dioxin-like polychlorinated biphenyls(ndl-PCBs)were measured at 9−16 weeks of *** machine kernel regression(BKMR)was employed to identify significant chemicals,and probit and logistic models were used to calculate BMD adjusted for significant chemicals.A physiologically based toxicokinetic(PBTK)model was optimized using polyfluorinated dibenzo-p-dioxins and dibenzofurans(PFDD/Fs)data by the Bayesian−Monte Carlo Markov chain method and was used to determine the daily dietary exposure *** median serum level of total dioxin toxic equivalent(TEQ)was 7.72 pg TEQ/g *** regression analysis revealed that individuals in the fifth quantile of total TEQ level had significantly higher odds of developing GDM compared to those in the first quantile(OR,8.87;95%CI 3.19,27.58).The BKMR analysis identified dioxin TEQ and BDE-153 as the compounds with the greatest *** binary logistic and probit models showed that the BMD10(benchmark dose corresponding to a 10%extra risk)and BMDL_(10)(lower bound on the BMD_(10))were 3.71 and 3.46 pg TEQ/g fat,respectively,when accounting for coexposure to BDE-153 up to the 80%*** the optimized PBTK model and modifying factor,it was estimated that daily exposure should be below 4.34 pg TEQ kg^(−1)bw week^(−1)in order to not reach a harmful serum concen

关键词： dioxin gestational diabetes mellitus coexposure benchmark dose physiologically based toxicokinetic model

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Lymph node-biomimetic scaffold boosts CAR-T therapy against solid tumor

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National Science Review 2024年第4期11卷 206-215页

作者： Ziyan Liao Jie Jiang Wei wu Jiaqi Shi Yanfang Wang Yuejun Yao Tao sheng Feng Liu Wei Liu Peng Zhao Feifei Lv Jie Sun Hongjun Li Zhen Gu National Key Laboratory of Advanced Drug Delivery and Release Systems College of Pharmaceutical Sciences Zhejiang University Key Laboratory of Advanced Drug Delivery Systems of Zhejiang Province College of Pharmaceutical SciencesZhejiang University Liangzhu Laboratory Zhejiang University Bone Marrow Transplantation Center of the First Affiliated Hospital and Department of Cell Biology Zhejiang University School of Medicine Department of Medical Oncology The First Affiliated Hospital School of Medicine Zhejiang University Department of Laboratory Medicine The First Affiliated Hospital Zhejiang University School of Medicine Department of Hepatobiliary and Pancreatic Surgery The Second Affiliated HospitalSchool of MedicineZhejiang University Jinhua Institute of Zhejiang University MOE Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education Department of Polymer Science and EngineeringZhejiang University Department of General Surgery Sir Run Run Shaw Hospital School of Medicine Zhejiang University

The limited infiltration and persistence of chimeric antigen receptor(CAR)-T cells is primarily responsible for their treatment deficits in solid tumors. Here, we present a three-dimensional scaffold, inspired by the physiological process of T-cell proliferation in lymph nodes. This scaffold gathers the function of loading,delivery, activation and expansion for CAR-T cells to enhance their therapeutic effects on solid tumors. This porous device is made from poly(lactic-co-glycolic acid) by a microfluidic technique with the modification of T-cell stimulatory signals, including anti-CD3, anti-CD28 antibodies, as well as cytokines. This scaffold fosters a 50-fold CAR-T cell expansion in vitro and a 15-fold cell expansion in vivo. Particularly, it maintains long-lasting expansion of CAR-T cells for up to 30 days in a cervical tumor model and significantly inhibits the tumor growth. This biomimetic delivery strategy provides a versatile platform of cell delivery and activation for CAR-T cells in treating solid tumors.

关键词： drug delivery cell therapy bioinspired biomaterials cancer immunotherapy

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Chinese Guidelines for the Diagnosis and Management of Atrial Fibrillation

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Journal of Geriatric Cardiology 2024年第3期21卷 251-314页

作者： Chang-sheng MA Shu-Lin wu Shao-Wen LIU Ya-Ling HAN Chinese Society of Cardiology Chinese Medical Association Heart Rhythm Committee of Chinese Society of Biomedical Engineering Beijing Anzhen Hospital Capital Medical University Guandong Provincial People’s Hospital Shanghai First People’s Hospital General Hospital of Northern Theater Command 不详

Atrial fibrillation(AF)is the most common sustained cardiac arrhythmia,significantly impacting patients’quality of life and increasing the risk of death,stroke,heart failure,and *** the past two decades,there have been significant breakthroughs in AF risk prediction and screening,stroke prevention,rhythm control,catheter ablation,and integrated *** this period,the scale,quality,and experience of AF management in China have greatly improved,providing a solid foundation for the development of guidelines for the diagnosis and management of *** further promote standardized AF management,and apply new technologies and concepts to clinical practice in a timely and comprehensive manner,the Chinese Society of Cardiology of the Chinese Medical Association and the Heart Rhythm Committee of the Chinese Society of Biomedical Engineering have jointly developed the Chinese Guidelines for the Diagnosis and Management of Atrial *** guidelines have comprehensively elaborated on various aspects of AF management and proposed the CHA2DS2-VASc-60 stroke risk score based on the characteristics of AF in the Asian *** guidelines have also reevaluated the clinical application of AF screening,emphasized the significance of early rhythm control,and highlighted the central role of catheter ablation in rhythm control.

关键词： prevention sustained diagnosis

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A combined nanotherapeutic approach targeting farnesoid X receptor,ferroptosis,and fibrosis for nonalcoholic steatohepatitis treatment

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Acta Pharmaceutica Sinica B 2024年第5期14卷 2228-2246页

作者： Jiangtao Fu Pingping Zhang Zhiguo Sun Guodong Lu Qi Cao Yiting Chen Wenbin wu Jiabao Zhang Chunlin Zhuang Chunquan sheng Jiajun Xu Ying Lu Pei Wang The Center for Basic Research and Innovation of Medicine and Pharmacy(MOE) School of PharmacyNaval Medical UniversityShanghai 200433China National Demonstration Center for Experimental Pharmaceutical Education Naval Medical University/Second Military Medical UniversityShanghai 200433China Department of Diving and Hyperbaric Medicine Naval Special Medical CenterNaval Medical UniversityShanghai 200433China

Obeticholic acid(OCA),a farnesoid X receptor(FXR)agonist with favorable effects on fatty and glucose metabolism,has been considered the leading candidate drug for nonalcoholic steatohepatitis(NASH)***,its limited effectiveness in resolving liver fibrosis and lipotoxicity-induced cell death remains a major ***,a newly recognized form of cell death characterized by uncontrolled lipid peroxidation,is involved in the progression of *** oxide(NO)is a versatile biological molecule that can degrade extracellular *** this study,we developed a PEGylated thiolated hollow mesoporous silica nanoparticles(MSN)loaded with OCA,as well as a ferroptosis inhibitor liproxsatin-1 and a NO donor S-nitrosothiol(ONL@MSN).Biochemical analyses,histology,multiplexed flow cytometry,bulk-tissue RNA sequencing,and fecal 16S ribosomal RNA sequencing were utilized to evaluate the effects of the combined nanoparticle(ONL@MSN)in a mouse NASH *** with the OCA-loaded nanoparticles(O@MSN),ONL@MSN not only protected against hepatic steatosis but also greatly ameliorated fibrosis and ***@MSN also displayed enhanced therapeutic actions on the maintenance of intrahepatic macrophages/monocytes homeostasis,inhibition of immune response/lipid peroxidation,and correction of microbiota *** findings present a promising synergistic nanotherapeutic strategy for the treatment of NASH by simultaneously targeting FXR,ferroptosis,and fibrosis.

关键词： Nonalcoholic steatohepatitis Nanotherapy Farnesoid X receptor Ferroptosis Fibrosis Obeticholic acid S-Nitrosothiol Liproxstatin-1

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