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The metabolite, alpha-ketoglutarate inhibits non-alcoholic fatty liver disease progression by targeting lipid metabolism

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Liver Research 2020年第2期4卷 94-100页

作者： Katsuya Nagaoka Joud Mulla kevin cao Zhixiang Cheng Dan Liu William Mueller Amalia Bay Grace Hildebrand Shaolei Lu Chiung-Kuei Huang Liver Research Center Division of Gastroenterology&Liver Research CenterWarren Alpert Medical School of Brown University and Rhode Island HospitalProvidenceRIUSA Department of Pathology and Laboratory Medicine Warren Alpert Medical School of Brown UniversityRhode Island HospitalProvidenceRIUSA

Background:Non-alcoholic liver disease is of increased concern and contributing to economic burdens not only in developing countries but in developed countries as *** the biomarker of early diagnosis and early intervention approaches for non-alcoholic liver disease is unmet and required further *** the alpha-ketoglutarate(a-KG)is recently proposed to be a potential biomarker in differentiating patients with obesity from those with non-alcoholic liver disease,how a-ketoglutatate is involved in the fatty liver progression is not ***:A high-fat diet(HFD)feeding animal model,liver functional assays,and molecular approaches were adopted to clarify the impact of a-KG in fatty liver ***:In the current study,it was found that dietary a-KG would inhibit weight gain in male and female mice fed with a normal chew or *** feeding caused fatty liver in male mice,but a-KG treatment could substantially inhibit hepatic steatosis *** studies revealed the possible linkage of a-KG protective functions to lipid *** analysis identified the important role of peroxisome proliferator-activated receptors in beneficial a-KG-mediated effects on fatty liver ***:The current study demonstrates the therapeutic potential of a-KG and how it may be used,via dietary supplementation,as a preventive intervention for non-alcoholic liver disease in obese patients.

关键词： Peroxisome proliferator-activated receptor gamma(PPARγ) Steatosis Non-alcoholic fatty liver disease(NAFLD) Non-alcoholic steatohepatitis(NASH) Alpha-ketoglutarate(a-KG) Gender difference C57BL/6 mouse

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Polylactic acid micro/nanoplastic-induced hepatotoxicity: Investigating food and air sources via multi-omics

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Environmental Science and Ecotechnology 2024年第5期21卷 294-308页

作者： Hua Zha Shengyi Han Ruiqi Tang Dan cao kevin Chang Lanjuan Li State Key Laboratory for Diagnosis and Treatment of Infectious Diseases National Clinical Research Center for Infectious DiseasesNational Medical Center for Infectious DiseasesCollaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesThe First Affiliated HospitalZhejiang University School of MedicineHangzhouChina Department of Statistics The University of AucklandAucklandNew Zealand

Micro/nanoplastics(MNPs)are detected in human liver,and pose significant risks to human *** exposure to MNPs derived from non-biodegradable plastics can induce toxicity in mouse ***,nasal exposure to non-biodegradable plastics can cause airway dysbiosis in ***,the hepatotoxicity induced by foodborne and airborne biodegradable MNPs remains poorly *** we show the hepatotoxic effects of biodegradable polylactic acid(PLA)MNPs through multi-omics analysis of various biological samples from mice,including gut,fecal,nasal,lung,liver,and blood *** results show that both foodborne and airborne PLA MNPs compromise liver function,disrupt serum antioxidant activity,and cause liver ***,foodborne MNPs lead to gut microbial dysbiosis,metabolic alterations in the gut and serum,and liver transcriptomic *** MNPs affect nasal and lung microbiota,alter lung and serum metabolites,and disrupt liver *** gut Lachnospiraceae_NK4A136_group is a potential biomarker for foodborne PLA MNP exposure,while nasal unclassified_Muribaculaceae and lung Klebsiella are potential biomarkers for airborne PLA MNP *** relevant results suggest that foodborne PLA MNPs could affect the“gut microbiota-gutliver”axis and induce hepatoxicity,while airborne PLA MNPs could disrupt the“airway microbiota-lungliver”axis and cause *** findings have implications for diagnosing PLA MNPs-induced hepatotoxicity and managing biodegradable materials in the *** current study could be a starting point for biodegradable MNPs-induced *** research is needed to verify and inhibit the pathways that are crucial to MNPs-induced hepatotoxicity.

关键词： Micro/nanoplastics Hepatotoxicity Microbiota dysbiosis Metabolic disruption Transcriptomic dysregulation

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Poisoning effect of polyvinyl chloride on the catalytic pyrolysis of mixed plastics over zeolites

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Science China Chemistry 2024年第7期67卷 2265-2273页

作者： Jiangchun Yuan Wenjie Wang Weixiao Sun Zhirong Yang Yueqiang cao Wenyao Chen Xiaohu Ge Gang Qian Xiang Feng Xuezhi Duan Xinggui Zhou kevin M.Van Geem Jing Zhang State Key Laboratory of Chemical Engineering East China University of Science and TechnologyShanghai 200237China School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China Laboratory for Chemical Technology(LCT) Department of MaterialsTextiles and Chemical EngineeringFaculty of Engineering&ArchitectureGhent UniversityZwijnaarde B-9052Belgium State Key Lab of Heavy Oil Processing China University of PetroleumQingdao 266580China

Nowadays,the chemical recycling is applied for only 1%of total waste plastics,largely due to contaminants in plastic waste and difficulty in product *** the major contaminant,polyvinyl chloride(PVC)often forms corrosive hydrogen chloride(HCl)during the chemical recycling,which may cause severe catalyst deactivation and equipment ***,the investigation on catalytic pyrolysis(the major route for plastics chemical recycling)of the PVC containing mixed plastics has been rarely ***,catalytic co-pyrolysis of PVC and polyethylene(PE)was studied over an aromatization catalyst,Pt/ZSM-5,since the basic building block aromatics are desired products from plastics chemical *** poisoning effect of PVC vapor on the catalyst stability was explored by collective efforts of thorough product analysis and catalyst *** was found that the HCl evolving from PVC has an autocatalytic effect that promotes the scission of dehydrochlorinated PVC,resulting in the high yield of benzene and acetylene from *** the other hand,the presence of PVC suppressed the aromatics formation from PE,largely due to the poisoning effect of PVC-derived HCl on the Pt/*** deactivation is irreversible as evidenced by the decreased zeolite crystallinity and the loss of strong acid sites that are key to the aromatization,possibly due to the removal of framework Al upon the interaction with *** modification with octadecylphosphonic acid only slightly alleviated the PVC poisoning *** insights on the PVC poisoning of zeolite catalysts provided in this work may guide the process design of chemical recycling of PVC containing waste plastics.

关键词： polyvinyl chloride polyethylene zeolite aromatics deactivation

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Activating Connexin43 gap junctions primes adipose tissue for therapeutic intervention

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Acta Pharmaceutica Sinica B 2022年第7期12卷 3063-3072页

作者： Yi Zhu Na Li Mingyang Huang Xi Chen Yu AAn Jianping Li Shangang Zhao Jan-Bernd Funck Jianhong cao Zhenyan He Qingzhang Zhu Zhuzhen Zhang Zhao VWang Lin Xu kevin W.Williams Chien Li kevin Grove Philipp E.Scherer Touchstone Diabetes Center Department of Internal Medicinethe University of Texas Southwestern Medical Center at DallasDallasTX 75390USA Division of Cardiology Department of Internal Medicinethe University of Texas Southwestern Medical Center at DallasDallasTX 75390USA Division of Hypothalamic Research Department of Internal Medicinethe University of Texas Southwestern Medical Center at DallasDallasTX 75390USA Quantitative Biomedical Research Center Department of Population and Data Sciencesthe University of Texas Southwestern Medical Center at DallasDallasTX 75390USA Department of Pediatrics the University of Texas Southwestern Medical Center at DallasDallasTX 75390USA Novo Nordisk Research Center SeattleWA 98109USA Children’s Nutrition Research Center Department of PediatricsBaylor College of MedicineHoustonTX 77030USA Department of Cell Biology the University of Texas Southwestern Medical Center at DallasDallasTX 75390USA

Adipose tissue is a promising target for treating obesity and metabolic ***,pharmacological agents usually fail to effectively engage adipocytes due to their extraordinarily large size and insufficient vascularization,especially in obese *** have previously shown that during cold exposure,connexin43(Cx43)gap junctions are induced and activated to connect neighboring adipocytes to share limited sympathetic neuronal input amongst multiple *** reason the same mechanism may be leveraged to improve the efficacy of various pharmacological agents that target adipose *** an adipose tissue-specific Cx43 overexpression mouse model,we demonstrate effectiveness in connecting adipocytes to augment metabolic efficacy of theβ_(3)-adrenergic receptor agonist Mirabegron and ***,combing those molecules with the Cx43 gap junction channel activator danegaptide shows a similar enhanced *** light of these findings,we propose a model in which connecting adipocytes via Cx43 gap junction channels primes adipose tissue to pharmacological agents designed to engage ***,Cx43 gap junction activators hold great potential for combination with additional agents targeting adipose tissue.

关键词： GJA1 Adipose tissue Gap junction Connexin43 FGF21 β3-Adrenergic receptor agonist Obesity Type 2 diabetes

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FUV and NIR size of the HI selected low surface brightness galaxies

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Research in Astronomy and Astrophysics 2021年第3期21卷 251-260页

作者： Cheng Cheng Wei Du Cong kevin Xu Tian-Wen cao Hong-Xin Zhang Jia-Sheng Huang Chuan He Zi-Jian Li Shu-Mei Wu Hai Xu YSophia Dai Xu Shao Marat Musin Chinese Academy of Sciences South America Center for Astronomy National Astronomical ObservatoriesCASBeijing 100101China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China Key Laboratory of Optical Astronomy NAOC20A Datun RoadChaoyang DistrictBeijing 100101China CAS Key Laboratory for Research in Galaxies and Cosmology Department of AstronomyUniversity of Science and Technology of ChinaHefei 230026China School of Astronomy and Space Science University of Science and Technology of ChinaHefei 230026China

How low surface brightness galaxies(LSBGs)form stars and assemble stellar mass is one of the most important questions related to understanding the LSBG *** select a sample of 381 HI bright LSBGs with both far ultraviolet(FUV)and near infrared(NIR)observations to investigate the star formation rate(SFR)and stellar mass scales,and the growth *** measure the FUV and NIR radii of our sample,which represent the star-forming and stellar mass distribution scales *** also compare the FUV and H band radius-stellar mass relation with archival data,to identify the SFR and stellar mass structure difference between the LSBG population and other *** galaxy HI mass has a tight correlation with the HI radius,we can also compare the HI and FUV radii to understand the distribution of HI gas and star formation *** results show that most of the HI selected LSBGs have extended star formation *** stellar mass distribution of LSBGs may have a similar structure to disk galaxies at the same stellar mass bins,but the star-forming activity of LSBGs happens at a larger radius than the high surface density galaxies,which may help to identify the LSBG sample from the wide-field deep u band image *** HI is also distributed at larger radii,implying a steeper(or not)Kennicutt-Schmidt relation for LSBGs.

关键词： Galaxies:evolution Galaxies:dwarf Ultraviolet:galaxies Galaxies:star formation

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Intra-articular sustained-release of pirfenidone as a disease-modifying treatment for early osteoarthritis

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Bioactive Materials 2024年第9期39卷 255-272页

作者： Xiaobo Zhu Mingde cao Kejia Li Yau-Tsz Chan Hon-Fai Chan Yi-Wah Mak Hao Yao Jing Sun Michael Tim-Yun Ong kevin Ki-Wai Ho Chien-Wei Lee Oscar Kuang-Sheng Lee Patrick Shu-Hang Yung Yangzi Jiang Institute for Tissue Engineering and Regenerative Medicine School of Biomedical SciencesFaculty of MedicineThe Chinese University of Hong KongShatinHong Kong Special Administrative Region of ChinaChina School of Biomedical Sciences Faculty of MedicineThe Chinese University of Hong KongShatinHong Kong Special Administrative Region of Chin1China Department of Orthopaedics&Traumatology Faculty of MedicineThe Chinese University of Hong KongPrince of Wales HospitalShatinHong Kong Special Administrative Region of Chin1China Center for Neuromusculoskeletal Restorative Medicine Hong Kong Special Administrative Region of Chin1China Key Laboratory for Regenerative Medicine Ministry of EducationSchool of Biomedical SciencesFaculty of MedicineThe Chinese University of Hong KongHong Kong Special Administrative Region of Chin1China Department of Orthopaedic Surgery The First Affiliated HospitalSchool of MedicineZhejiang UniversityChina

Osteoarthritis(OA)is a major clinical challenge,and effective disease-modifying drugs for OA are still lacking due to the complicated pathology and scattered treatment *** early treatments are urgently needed to prevent OA *** excessive amount of transforming growth factorβ(TGFβ)is one of the major causes of synovial fibrosis and subchondral bone sclerosis,and such pathogenic changes in early OA precede cartilage *** we report a novel strategy of intra-articular sustained-release of pirfenidone(PFD),a clinically-approved TGFβinhibitor,to achieve disease-modifying effects on early OA *** found that PFD effectively restored the mineralization in the presence of excessive amount of TGFβ1(as those levels found in patients’synovial fluid).A monthly injection strategy was then designed of using poly lactic-co-glycolic acid(PLGA)microparticles and hyaluronic acid(HA)solution to enable a sustained release of PFD(the“PLGA-PFD+HA”strategy).This strategy effectively regulated OA progression in destabilization of the medial meniscus(DMM)-induced OA mice model,including preventing subchondral bone loss in early OA and subchondral bone sclerosis in late OA,and reduced synovitis and pain with cartilage preservation *** finding suggests the promising clinical application of PFD as a novel disease-modifying OA drug.

关键词： TGFβ1 signaling Osteoarthritis Subchondral bone Pirfenidone DMOAD

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CFTR is a negative regulator ofγδT cell IFN-γproduction and antitumor immunity

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Cellular & Molecular Immunology 2021年第8期18卷 1934-1944页

作者： Yuanyuan Duan Guangqiang Li Miaomiao Xu Xiaofei Qi Mingxia Deng Xuejia Lin Zhiwei Lei Yi Hu Zhenghu Jia Quanli Yang Guangchao cao Zonghua Liu Qiong Wen Zhenhua Li Jie Tang Wei kevin Zhang Pingbo Huang Limin Zheng Richard A.Flavell Jianlei Hao Zhinan Yin Zhuhai Precision Medical Center Zhuhai People’s Hospital(Zhuhai Hospital Affiliated with Jinan University)Jinan UniversityZhuhai519000GuangdongChina The Biomedical Translational Research Institute Faculty of Medical ScienceJinan UniversityGuangzhou510632GuangdongChina Department of Physiology School of Basic Medical SciencesSouthern Medical UniversityGuangzhou510515GuangdongChina The First Affiliated Hospital Jinan UniversityGuangzhou510632China School of Pharmaceutical Sciences South-Central University for NationalitiesWuhan430074HubeiChina Division of Life Science Hong Kong University of Science and Technology(HKUST)Hong KongChina State Key Laboratory of Oncology in Southern China Collaborative Innovation Center for Cancer MedicineSun Yat-sen University Cancer CenterGuangzhou510060China Department of Immunobiology School of MedicineYale UniversityNew HavenCT06520USA

CFTR,a chloride channel and ion channel regulator studied mostly in epithelial cells,has been reported to participate in immune regulation and likely affect the risk of cancer ***,little is known about the effects of CFTR on the differentiation and function ofγδT *** this study,we observed that CFTR was functionally expressed on the cell surface ofγδT *** deletion and pharmacological inhibition of CFTR both increased IFN-γrelease by peripheralγδT cells and potentiated the cytolytic activity of these cells against tumor cells both in vitro and in ***,the molecular mechanisms underlying the regulation ofγδT cell IFN-γproduction by CFTR were either TCR dependent or related to Ca^(2+)*** was recruited to TCR immunological synapses and attenuated Lck-P38 MAPK-c-Jun *** addition,CFTR was found to modulate TCR-induced Ca^(2+)influx and membrane potential(Vm)-induced Ca^(2+)influx and subsequently regulate the calcineurin-NFATc1 signaling pathway inγδT ***,CFTR serves as a negative regulator of IFN-γproduction inγδT cells and the function of these cells in antitumor *** investigation suggests that modification of the CFTR activity ofγδT cells may be a potential immunotherapeutic strategy for cancer.

关键词： CFTR γδT cells TCR Membrane potential Antitumor immunity

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矿化剂硫酸钙和氟化钙作用下硅酸三钙的合成(英文)

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硅酸盐学报 2014年第5期42卷 601-606页

作者：周勇敏 Tom ROBL kevin HENKE 南京工业大学材料科学与工程学院南京210009 Center for Applied Energy Research University of Kentucky

硅酸三钙(C3S)是硅酸盐水泥和阿利特硫铝酸盐水泥熟料中重要的矿物之一。为研究C3S的特性和性能,使用CaSO4和CaF2作为矿化剂,分别在1 350、1 400和1 450℃合成了高纯度的C3S。1 350℃得到的C3S纯度高于95%,而在1 400和1 450℃合成的C3S... 详细信息

硅酸三钙(C3S)是硅酸盐水泥和阿利特硫铝酸盐水泥熟料中重要的矿物之一。为研究C3S的特性和性能,使用CaSO4和CaF2作为矿化剂,分别在1 350、1 400和1 450℃合成了高纯度的C3S。1 350℃得到的C3S纯度高于95%,而在1 400和1 450℃合成的C3S纯度高于97%。检测结果显示3个不同温度下合成的C3S的游离氧化钙含量均小于1%。样品的化学成分分析表明,1 400和1 450℃合成的C3S中仅有痕量的SO3存在,合成过程中几乎所有的CaSO4均分解为cao,并且与部分SiO2形成了C3S。对所有样品的X射线衍射分析结果显示,合成的C3S为M1与(或)M3型。扫描电子显微镜分析结果显示,不同温度下合成的C3S的微结构有所不同。通过差热分析对矿化剂作用下的C3S合成过程进行了分析,结果表明该合成方法与通常的C2S和cao通过固相反应合成C3S之间存在显著差异,是一个两步合成过程。

关键词：硅酸三钙硫酸钙氟化钙制备形成过程矿化剂

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Spectral energy distribution similarity of the local galaxies and the 3.6μm selected galaxies from the Spitzer Extended Deep Survey

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Research in Astronomy and Astrophysics 2021年第10期21卷 197-208页

作者： Cheng Cheng Jia-Sheng Huang Hai Xu Gao-Xiang Jin Chuan He Tian-Wen cao Zi-Jian Li Shu-Mei Wu Piao-Ran Liang Ya-Ru Shi Xu Shao YSophia Dai Cong kevin Xu Marat Musin Chinese Academy of Sciences South America Center for Astronomy National Astronomical ObservatoriesCASBeijing 100101China CAS Key Laboratory of Optical Astronomy National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China

The Spitzer Extended Deep Survey(SEDS)as a deep and wide mid-infrared(MIR)survey project provides a sample of 500000+sources spreading 1.46 square degree and a depth of 26 AB mag(3σ).Combining with the previous available data,we build a PSF-matched multi-wavelength photometry catalog from u band to 8μ*** fit the SEDS galaxies spectral energy distributions by the local galaxy *** results show that the SEDS galaxy can be fitted well,indicating the high redshift galaxy(z~1)shares the same templates with the local *** study would facilitate the further study of the galaxy luminosity and high redshift mass function.

关键词： cosmology:observations galaxies:high-redshift galaxies:evolution galaxies:statistics infrared:galaxies

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三维网络结构氧化铜纳米线锂离子电池负极材料的制备和性能研究

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功能材料 2020年第4期51卷 4142-4147页

作者：曹宇光肖煌周佳盈高云 Manon D'Assuncao Lourenco kevin Peter Homewood 鲍钰文夏晓红湖北大学材料科学与工程学院功能材料绿色制备与应用教育部重点实验室有机化工新材料湖北省协同创新中心武汉430062

通过阳极氧化法和后退火处理在铜箔上合成了三维网络结构氧化铜纳米线,将其作为负极材料制备了无需添加粘结剂的锂离子电池。研究了恒压氧化时间对材料形貌和电化学性能的影响。在1C的倍率下,氧化1000 s制备的CuO纳米线表现出最高的1172... 详细信息

通过阳极氧化法和后退火处理在铜箔上合成了三维网络结构氧化铜纳米线,将其作为负极材料制备了无需添加粘结剂的锂离子电池。研究了恒压氧化时间对材料形貌和电化学性能的影响。在1C的倍率下,氧化1000 s制备的CuO纳米线表现出最高的1172 mAh/g首圈放电比容量和594 mAh/g的可逆比容量,500圈循环可逆比容量为607.6 mAh/g,可逆容量保留率为102.3%。交联的三维网络结构CuO纳米线相互支撑,提供稳定的结构,有效缓解了CuO纳米线作为锂离子电池负极材料中的体积膨胀问题,表现出了优异的倍率性能和循环寿命。

关键词：氧化铜纳米线阳极氧化网络结构无粘结剂锂离子电池

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