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Circulating immune cell landscape in patients who had mild ischaemic stroke

Stroke & Vascular Neurology 2022年第4期7卷 319-327,I0020-I0022页

作者： Young-eun Cho Hyangkyu Lee Heekyong R.Bae Hyungsuk Kim Sijung Yun Rany Vorn Ann Cashion Mary Jo Rucker Mariam Afzal Lawrence Latour Jessica Gill College of Nursing The University of IowaIowa CityIowaUSA National Institute of Nursing Research National Institutes of HealthBethesdaMarylandUSA Mo-Im Kim Nursing Research Institute College of NursingYonsei UniversitySeoulSouth Korea National Eye Institute National Institutes of HealthBethesdaMarylandUSA Predictiv Care IncSunnyvaleCaliforniaUSA School of Nursing Johns Hopkins UniversityBaltimoreMarylandUSA College of Nursing University of Tennessee Health Science CenterMemphisTennesseeUSA Suburban Hospital BethesdaMarylandUSA National Institute of Neurological Disorders and Stroke National Institutes of HealthBethesdaMarylandUSA

Introduction Patients who had a mild ischaemic stroke who present with subtle or resolving symptoms sometimes go undiagnosed,are excluded from treatment and in some cases clinically *** immune cells are potential biomarkers that can assist with diagnosis in ischaemic *** the transcriptomic changes of each cell population caused by ischaemic stroke is critical because they work closely in a complicated *** this study,we investigated peripheral blood mononuclear cells(PBMCs)transcriptomics of patients who had a stroke using a single-cell RNA sequencing to understand peripheral immune response after mild stroke based on the gene expression in an unbiased *** Transcriptomes of PBMCsfrom 10 patients who had an acute ischaemic stroke within 24 hours after stroke onset were compared with 9 race-matched/age-matched/gender-matched *** PBMCs were prepared with ddSeqTM(Illumina-BioRad)and sequenced on the Illumina NovaSeq 6000 *** Notable population changes were observed in patients who had a stroke,especially in NK cells and CD14+*** number of NK cells was increased,which was further confirmed by flow *** analysis implied that the activity of NK cells also is enhanced in patients who had a ***14+monocytes were clustered into two groups;dendritic cell-related CD14+monocytes and NK cell-related CD14+*** found CD14+monocyte subclusters were dramatically reduced in patients who had a *** This is the first study demonstrating the increased number of NK cells and new monocyte subclusters of mild ischaemic stroke based on the transcriptomic *** findings provide the dynamics of circulating immune response that could assist diagnosis and potential therapeutic development of mild ischaemic stroke.

关键词： patients diagnosis Circulating

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RGD peptide and graphene oxide co-functionalized PLGA nanofiber scaffolds for vascular tissue engineering

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Regenerative Biomaterials 2017年第3期4卷 159-166页

作者： Yong Cheol Shin Jeonghyo Kim Sung eun Kim Su-Jin Song SuckWon Hong Jin-Woo Oh Jaebeom Lee Jong-Chul Park Suong-Hyu Hyon Dong-Wook Han Department of Cogno-Mechatronics Engineering Department of Optics and Mechatronics Engineering Department of Nanoenergy Engineering College of Nanoscience and NanotechnologyPusan National UniversityBusan 46241Korea Cellbiocontrol Laboratory Department of Medical EngineeringYonsei University College of MedicineSeoul 03722Korea and 5Center for Fiber and Textile Science Kyoto Institute of TechnologyMatsugasakiKyoto 606-8585Japan

In recent years,much research has been suggested and examined for the development of tissue engineering scaffolds to promote cellular *** our study,RGD peptide and graphene oxide(go)co-functionalized poly(lactide-co-glycolide,PLGA)(RGD-go-PLGA)nanofiber mats were fabricated via electrospinning,and their physicochemical and thermal properties were characterized to explore their potential as biofunctional scaffolds for vascular tissue *** electron microscopy images revealed that the RGD-go-PLGA nanofiber mats were readily fabricated and composed of randomoriented electrospun nanofibers with average diameter of *** successful co-functionalization of RGD peptide and go into the PLGA nanofibers was confirmed by Fourier-transform infrared spectroscopic ***,the surface hydrophilicity of the nanofiber mats was markedly increased by co-functionalizing with RGD peptide and *** was found that the mats were thermally stable under the cell culture ***,the initial attachment and proliferation of primarily cultured vascular smoothmuscle cells(VSMCs)on the RGD-go-PLGA nanofibermats were *** was revealed that the RGD-go-PLGA nanofibermats can effectively promote the growth of *** conclusion,our findings suggest that the RGD-go-PLGA nanofiber mats can be promising candidates for tissue engineering scaffolds effective for the regeneration of vascular smooth muscle.

关键词： RGD peptide graphene oxide poly(lactic-co-glycolic acid) biofunctional scaffold vascular smooth muscle cell

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The interplay of aging,genetics and environmental factors in the pathogenesis of Parkinson’s disease

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Translational Neurodegeneration 2019年第1期8卷 279-289页

作者： Shirley Yin-Yu Pang Philip Wing-Lok Ho Hui-Fang Liu Chi-Ting Leung Lingfei Li eunice eun Seo Chang David Boyer Ramsden Shu-Leong Ho Division of Neurology Department of MedicineQueen Mary HospitalUniversity of Hong KongHong KongPeople’s Republic of China Institute of Metabolism and Systems Research University of BirminghamBirminghamUK

Background:Parkinson’s disease(PD)is characterized by dopaminergic neuronal loss in the substantia nigra pars compacta and intracellular inclusions called Lewy bodies(LB).During the course of disease,misfoldedα-synuclein,the major constituent of LB,spreads to different regions of the brain in a prion-like fashion,giving rise to successive non-motor and motor *** is likely multifactorial,and involves interplay among aging,genetic susceptibility and environmental *** body:The prevalence of PD rises exponentially with age,and aging is associated with impairment of cellular pathways which increases susceptibility of dopaminergic neurons to cell ***,the majority of those over the age of 80 do not have PD,thus other factors in addition to aging are needed to cause *** of neurotoxins which can result in parkinsonism led to efforts in identifying environmental factors which may influence PD ***,the causality of most environmental factors is not conclusively established,and alternative explanations such as reverse causality and recall bias cannot be *** lack of geographic clusters and conjugal cases also go against environmental toxins as a major cause of *** mutations as well as common variants in genes such as SNCA,LRRK2 and GBA are associated with risk of PD,but Mendelian causes collectively only account for 5%of PD and common polymorphisms are associated with small increase in PD *** of PD has been estimated to be around 30%.Thus,aging,genetics and environmental factors each alone is rarely sufficient to cause PD for most ***:PD is a multifactorial disorder involving interplay of aging,genetics and environmental *** has implications on the development of appropriate animal models of PD which take all these factors into *** converging pathways likely include mitochondrial dysfunction,impaired autophagy,oxidative stress and neuroinflammation,which are

关键词： Parkinson’s disease Genetics Aging Environmental toxins

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