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Recent Advances in the Electrochemical Defluorinative Transformations of C-F Bonds

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Chinese Journal of Chemistry 2024年第16期42卷 1913-1928页

作者： Qinhui Wan rui-xue Liu Zhongyi Zhang Xia-Die Wu Zhong-Wei Hou Lei Wang Advanced Research Institute and Schoolof Pharmaceutical Sciences Taizhou UniversityJiaojiangZhejiang 318000China Department of Chemistry Southern University of Science and TechnologyhenzhenGuangdong 518055China College of Material Chemistry and Chemical Engineering Key Laboratory of Organosilicon Chemistry and Material Technology Ministryof EducationHangzhou Normal UniversityHangzhouZhejiang 311121China

Organic fluorine compounds are ubiquitous and pivotally important organic molecules,yet their activation and transformation have long been a formidable challenge due to the high energy and low reactivity of C-F *** electrosynthesis,an environmentally benign synthetic method in organic chemistry,enables a myriad of chemical transformations without the need for external redox *** recent years,organic electrochemistry has emerged as a powerful tool for achieving the activation and transformation of C-F bonds in fluorine-containing *** review aims to succinctly recapitulate the latest advancements in the electrochemical defluorinative transformations of C-F bonds and to delve into the reaction design,mechanistic insights,and developmental prospects ofthese methods.

关键词： Organic electrochemistry Electroreduction Defluorination C-F bond activation Organic fluorine compounds

Potential therapeutic role of spermine via Rac1 in osteoporosis:Insights from zebrafish and mice

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Zoological Research 2024年第2期45卷 367-380页

作者： rui-xue Jiang Nan Hu Yu-Wei Deng Long-Wei Hu Hao Gu Nan Luo Jin Wen Xin-Quan Jiang Department of Prosthodontics Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai 200011China College of Stomatology Shanghai Jiao Tong UniversityNational Center for StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyShanghai Research Institute of StomatologyShanghai Engineering Research Center of Advanced Dental Technology and MaterialsShanghai 200125China Department of Endodontics Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai Jiao Tong UniversityShanghai 200011China Department of Oral and Maxillofacial-Head and Neck Oncology Shanghai Ninth People’s HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200011China Department of Preventive Dentistry Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai Jiao Tong UniversityShanghai 200011China

Osteoporosis(OP)is a prevalent metabolic bone *** drug therapy is essential to prevent bone loss in osteoporotic patients,current treatments are limited by side effects and high costs,necessitating the development of more effective and safer targeted *** a zebrafish(Danio rerio)larval model of osteoporosis,we explored the influence of the metabolite spermine on bone *** showed that spermine exhibited dual activity in osteoporotic zebrafish larvae by increasing bone formation and decreasing bone *** not only demonstrated excellent biosafety but also mitigated prednisolone-induced embryonic neurotoxicity and ***,spermine showcased protective attributes in the nervous systems of both zebrafish embryos and *** the molecular level,Rac1 was identified as playing a pivotal role in mediating the antiosteoporotic effects of spermine,with P53 potentially acting downstream of *** findings were confirmed using mouse(Mus musculus)models,in which spermine not only ameliorated osteoporosis but also promoted bone formation and mineralization under healthy conditions,suggesting strong potential as a bonestrengthening *** study underscores the beneficial role of spermine in osteoporotic bone homeostasis and skeletal system development,highlighting pivotal molecular *** their efficacy and safety,human endogenous metabolites like spermine are promising candidates for new anti-osteoporotic drug development and daily bone-fortifying agents.

关键词： Osteoporosis Spermine Rac1 Zebrafish Mice

Relationship between ultrasound parameters of the umbilical and middle cerebral arteries and intrauterine fetal distress

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World Journal of Clinical Cases 2024年第16期12卷 2745-2750页

作者： Ji Chen Fei-xue Liu rui-xue Tao Department of Obstetrics The Third Affiliated Hospital of Anhui Medical UniversityHefei 230061Anhui ProvinceChina Anhui Medical University First Clinical School of MediumClass 2021Clinical MedicineHefei 230032Anhui ProvinceChina

BACKGROUND By comprehensively analyzing the blood flow parameters of the umbilical and middle cerebral arteries,doctors can more accurately identify fetal intrauterine distress,as well as assess its severity,so that timely interventions can be implemented to safeguard the health and safety of the *** To identify the relationship between ultrasound parameters of the umbilical and middle cerebral arteries and intrauterine *** Clinical data of pregnant women admitted between January 2021 and January 2023 were collected and divided into the observation and control groups(n=50 each),according to the presence or absence of intrauterine *** ultrasound hemodynamic parameters of the uterine artery(UtA),fetal middle cerebral artery(MCA),and umbilical artery(UmA)were compared with neonatal outcomes and occurrence of intrauterine distress in the two *** Comparison of ultrasonic hemodynamic parameters,resistance index(RI),pulsatility index(PI),and systolic maximal blood flow velocity of UmA compared to diastolic blood flow velocity(S/D),revealed higher values of fetal MCA,PI,and S/D of UmA in pregnant women with UtA compared to controls(P<0.05),while there was no difference between the two groups in terms of RI(P<0.05)The incidence of a neonatal Apgar score of 8-10 points was lower in the observation group(66.7%)than in the control group(90.0%),and neonatal weight(2675.5±27.6 g)was lower than in the control group(3117.5±31.2 g).Further,cesarean section rate was higher in the observation group(70.0%)than in the control group(11.7%),and preterm labor rate was higher in the observation group(40.0%)than in the control group(10.0%).The incidence of fetal distress,neonatal growth restriction and neonatal asphyxia were also higher in the observation group(all P<0.05).CONCLUSION Fetal MCA,UmA,and maternal UtA hemodynamic abnormalities all develop in pregnant women with intrauterine distress during late pregnancy,which suggests that clinical attenti

关键词： Late pregnancy Fetal intrauterine distress Ultrasound blood flow parameters Uterine artery Middle cerebral artery Umbilical artery

Natural long-chain saturated fatty acids doped LNPs enabling spleen selective mRNA translation and potent cancer immunotherapy

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Nano Research 2024年第3期17卷 1804-1817页

作者： Fazhan Wang Meng Zhang Meiling Tian Jia Lou Longze Pan Xiaoke Gao Lijing Zhang Xiaohan Lou Linyu Zhu Yuqiao Sheng Ming Wang rui xue Wenjing Deng Shuai Shao Zhihai Qin Medical Research Center The First Affiliated Hospital of Zhengzhou UniversityZhengzhou UniversityZhengzhou 450052China Translational Medical Center The First Affiliated Hospital of Zhengzhou UniversityZhengzhou UniversityZhengzhou 450052China Department of Neuro-Intensive Care Unit The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052China Academy of Medical Sciences Zhengzhou UniversityZhengzhou 450052China

Rationally tailored lipid nanoparticles(LNPs)with efficient and tunable delivery of mRNA in vivo are crucial for mRNA *** expression of antigenic protein in lymphoid tissues/organs could improve the immunostimulatory efficacy and safety of LNPs-based mRNA *** by the metabolic behavior that long-chain saturated fatty acids tending to enter lymphoid tissue rather than the liver,we developed fatty acid-doped LNPs capable of mediating differential protein expressions in the liver and spleen when administered *** the molar ratio of saturated fatty acid located 60%–70%,the doped LNPs achieved the spleen selective mRNA *** mechanism could be attributed to the different cellular uptake behaviors of saturated fatty acids in *** with a model antigen(ovalbumin)mRNA-loaded spleen selective LNPs,we observed enhanced antigen-specific T cell immune responses,and potent immunotherapeutic and immunoprophylactic efficacy in the mouse lymphoma *** natural long-chain saturated fatty acids metabolic characteristics-inspired design of LNPs for spleen-selective mRNA vaccines delivery will provide references for designing mRNA vaccines with high efficacy and safety for tumor immunotherapy.

关键词： mRNA vaccine lipid nanoparticles spleen long-chain saturated fatty acid cancer immunotherapy

Probing the Gamma-Ray Emission Region of Five TeV Flat Spectrum Radio Quasars

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Research in Astronomy and Astrophysics 2024年第6期24卷 156-169页

作者： Hu-Bing Xiao Hai-Tao Cao rui xue Jin-Ting Cai Ge-Ge Wang Marina Manganaro Shao-Hua Zhang Zhi-Hao Ouyang Li-Ping Fu Jun-Hui Fan Shanghai Key Lab for Astrophysics Shanghai Normal UniversityShanghai 200234China School of Information Engineering Guangzhou Panyu PolytechnicGuangzhou 511483China Department of Physics Zhejiang Normal UniversityJinhua 321004China College of Mathematics and Physics Guangxi Minzu UniversityNanning 530006China Key Laboratory of Cosmology and Astrophysics(Liaoning) College of SciencesNortheastern UniversityShenyang 110819China Department of Physics University of RijekaRijeka 51000Croatia Center for Astrophysics Guangzhou UniversityGuangzhou 510006China Key Laboratory for Astronomical Observation and Technology of Guangzhou Guangzhou 510006China Astronomy Science and Technology Research Laboratory of Department of Education of Guangdong Province Guangzhou 510006China

The location ofγ-ray emission of blazars remains a contested topic,inspiring the development of numerous investigative techniques to address this *** this work,we analyzed Fermiγ-ray light curves in the GeV and MeV bands,employing the discrete cross-correlation function method to discern time lags between the two *** 4C+21.35,Ton 599,B21420+32,and PKS 1510-089,we identified a time lag spanning several days,while for PKS 1441+25,the time lag was not statistically *** results imply that the soft photons necessary for inverse Compton scattering predominantly originate from the dusty torus in the first four sources,whereas for PKS1441+25,they seem to be sourced mainly from the broad-line *** analysis of the opacity(τγγ)and the GeV spectra study supports the conclusion that the location of the dissipation region must be beyond the BLR to avoid significant ***,for PKS 1441+25,the emission region is also posited to lie outside yet proximate to the *** parameters of describing the emission region were obtained by fitting broadband spectral energy distribution with contemporaneous observation *** findings suggest that for the five TeV FSRQs,during Te V flaring events,the jet appears to maintain an equilibrium between the energy density of the magnetic field and that of the particles for all investigated sources,with the exceptions of 4C+21.35 and PKS1441+*** terms of the overall jet power,particle energy is the dominant contributor,and the observed blazar radiation cannot be solely attributed to the magnetic field,except in the case of 4C+***,magnetic reconnection is unlikely to be the primary mechanism behind particle acceleration in these systems.

关键词： galaxies:active gamma-rays:galaxies galaxies:jets

New role of platelets in schizophrenia:predicting drug response

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General Psychiatry 2024年第2期37卷 197-206页

作者： Yamin Zhang Yanghao Zheng Peiyan Ni Sugai Liang Xiaojing Li Hua Yu Wei Wei xueyu Qi xueli Yu rui xue Liansheng Zhao Wei Deng Qiang Wang Wanjun Guo Tao Li Department of Neurobiology Zhejiang University School of Medicine Affiliated Mental Health Centre&Hangzhou Seventh People's HospitalHangzhouZhejiangChina Liangzhu Laboratory Zhejiang University MOE Frontier Science Center for Brain Science and Brain Machine IntegrationHangzhouZhejiangChina Mental Health Center and Psychiatric Laboratory West China Hospital of Sichuan UniversityChengduSichuanChina

Background Elevated platelet count(PLTc)is associated with first-episode schizophrenia and adverse outcomes in individuals with precursory ***,the impact of antipsychotic medications on PLTc and its association with symptom improvement remain *** We aimed to investigate changes in PLTc levels following antipsychotic treatment and assess whether PLTc can predict antipsychotic responses and metabolic changes after accounting for other related *** A total of 2985 patients with schizophrenia were randomised into seven *** group received one of seven antipsychotic treatments and was assessed at 2,4 and 6 *** symptoms were evaluated using the positive and negative syndrome scale(PANSS).Additionally,we measured blood cell counts and metabolic parameters,such as blood *** measures analysis of variance was used to examine the effect of antipsychotics on PLTc changes,while structural equation modelling was used to assess the predictive value of PLTc on PANSS *** PLTc significantly increased in patients treated with aripiprazole(F=6.00,p=0.003),ziprasidone(F=7.10,p<0.001)and haloperidol(F=3.59,p=0.029).It exhibited a positive association with white blood cell count and metabolic *** baseline PLTc was observed in non-responders,particularly in those defined by the PANSS-negative *** the structural equation model,PLTc,white blood cell count and a latent metabolic variable predicted the rate of change in the PANSS-negative subscale ***,higher baseline PLTc was observed in individuals with less metabolic change,although this association was no longer significant after accounting for baseline metabolic *** Platelet parameters,specifically PLTc,are influenced by antipsychotic treatment and could potentially elevate the risk of venous thromboembolism in patients with *** PLTc levels and associated factors may impede symptom improvement by

关键词： schizophrenia assessed treatment

学校多样化特色发展与“双减”一体化推进研究

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教学与管理 2024年第13期 17-21页

作者：李瑞雪北京教育科学研究院基础教育科学研究所北京100036

多样化特色发展与“双减”应该相互融通、双向赋能、协同推进。从历史发展、理论基础、内在关联角度分析多样化特色发展与“双减”普遍的逻辑联系和强大的共通属性。基于此,普通高中多样化特色发展要拓展和推动“双减”落实,义务教育“... 详细信息

多样化特色发展与“双减”应该相互融通、双向赋能、协同推进。从历史发展、理论基础、内在关联角度分析多样化特色发展与“双减”普遍的逻辑联系和强大的共通属性。基于此,普通高中多样化特色发展要拓展和推动“双减”落实,义务教育“双减”要对接和指向多样化特色发展。普通高中学校要构筑学生多元发展、个性成长的环境和机制,呼应“双减”提出的新要求,主动对接义务教育学校特色建设,重视中考招生牵动作用,联结高中减负新基础和新背景;义务教育学校要开设开放性特色课后课程,高效开展课堂教学,前置生涯规划教育,营造良好校园环境。

关键词：多样化特色发展 “双减” 一体化推进普通高中义务教育学校

Ventricular system-unrelated cerebellar ependymoma:A case report

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World Journal of Clinical Cases 2024年第25期12卷 5814-5820页

作者： Chao-Ge Yang rui-Feng xue Lu-Xia Yang Xiao-Lin Jieda Wei Xiang Jie Zhou Department of Neurosurgery The Affiliated Hospital of Southwest Medical UniversityLuzhou 646000Sichuan ProvinceChina Department of Neonatology Children's Medical CenterThe Affiliated Hospital of Southwest Medical UniversityLuzhou 646000Sichuan ProvinceChina

BACKGROUND An ependymoma is a glial tumor that usually occurs in or near the ventricle,close to the *** rarely occurs exclusively in the brain parenchyma without being associated with the *** SUMMARY Here,we report a rare case of a cerebellar ependymoma completely located in the brain parenchyma.A previously healthy 32-year-old female with a 1-month history of dizziness was admitted to our *** hospitalization,magnetic resonance imaging of the brain revealed a space-occupying lesion measuring 57 mm×41 mm×51 mm in the right cerebellar hemisphere and inferior cerebellar *** patient underwent surgical resection for the right cerebellar *** pathological examination revealed an *** 1 year follow-up,the patient was doing well and showed no *** We conducted a literature review and summarized three theories regarding ependymomas located exclusively in the brain parenchyma,which are key to the diagnosis of intraparenchymal cerebellar *** and postoperative radiotherapy are the primary treatment options for ependymomas.

关键词： Cerebellar ependymoma Brain parenchyma Mechanisms Surgery Case report

Application of alginate in inflammatory bowel disease

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Biomedical Engineering Communications 2024年第2期3卷 10-16页

作者： rui-xue Kang Ying Zhuang Ming-Jie Liu Qi Han Wei-Li Zhang Wei-Yu Fan xue Gao Jia-Zheng Zhou Jian-Bin Zhang Collage of Pharmacy Dalian Medical UniversityDalian 116044China Laboratory Animal Center Dalian Medical UniversityDalian 116044China

Inflammatory bowel disease(IBD)represents a chronic inflammatory condition profoundly impacting the gastrointestinal *** prevalence has markedly risen in both developed and developing nations over recent *** the absence of definitive etiological elucidation,therapeutic strategies predominantly revolve around pharmacological interventions aimed at symptom ***(AG)is a polysaccharide of marine origin that has garnered significant attention due to its inherent biocompatibility,pH sensitivity,and *** exploration within drug delivery systems for IBD treatment stems from its natural sourcing,non-cytotoxic nature,and economic ***,AG demonstrates facile interpolymeric cross-linking,facilitating the formation of a cohesive network conducive to sustained drug release ***-based carrier systems for sustained drug release,and targeted drug delivery have been widely *** article reviews the pathogenesis of IBD and the current drugs,AG-based drug delivery systems and their properties in alleviating *** prospect of further development of AG in the field of biopharmaceutical and drug delivery is prospected.

关键词： alginate inflammatory bowel disease drug delivery