期刊文献+
共找到394,145篇文章
< 1 2 250 >
每页显示 20 50 100
应用OCS可编程控制器实现天然气计量核查
1
作者 裴锐 《中国仪器仪表》 2024年第4期30-34,共5页
天然气计量现场需要对流量计算机进行计量核查,一次表流量计种类不同、组态参数配置复杂、受液晶显示窗口限制无法同步采集计量核查数据等问题制约了现场操作的可行性。本文研发了一种基于OCS可编程控制器的天然气计量网关,可针对不同... 天然气计量现场需要对流量计算机进行计量核查,一次表流量计种类不同、组态参数配置复杂、受液晶显示窗口限制无法同步采集计量核查数据等问题制约了现场操作的可行性。本文研发了一种基于OCS可编程控制器的天然气计量网关,可针对不同厂家流量计算机的数据参数表,动态配置数据类型、从机地址、字节顺序、读写权限并映射到OCS的%R设备寄存器,解决了天然气计量核查数据预采集的难题;结合现场天然气介质组份、实时工况温度、实时工况压力值等数据,使用依据GB/T17747-2011《天然气压缩因子的计算》所研发的“天然气流量计算机压缩因子核查软件”,按流量计算机参数设置进行的计量核查;使用依据GB/T11062-2020《天然气发热量、密度、相对密度和沃泊指数的计算方法》所研发的“天然气流量能量计量核查软件”,进行天然气能量计量核查;针对天然气的现场计量核查,实现了硬件自动化采集预处理,软件自动化快速计算,有效提升了计量的工作效率和可靠性。 展开更多
关键词 ocs控制器 网关 天然气 流量计算机 压缩因子 能量计量
下载PDF
Metabolic and proteostatic differences in quiescent and active neural stem cells 被引量:1
2
作者 Jiacheng Yu Gang Chen +4 位作者 Hua Zhu Yi Zhong Zhenxing Yang Zhihong Jian Xiaoxing Xiong 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第1期43-48,共6页
Adult neural stem cells are neurogenesis progenitor cells that play an important role in neurogenesis.Therefore,neural regeneration may be a promising target for treatment of many neurological illnesses.The regenerati... Adult neural stem cells are neurogenesis progenitor cells that play an important role in neurogenesis.Therefore,neural regeneration may be a promising target for treatment of many neurological illnesses.The regenerative capacity of adult neural stem cells can be chara cterized by two states:quiescent and active.Quiescent adult neural stem cells are more stable and guarantee the quantity and quality of the adult neural stem cell pool.Active adult neural stem cells are chara cterized by rapid proliferation and differentiation into neurons which allow for integration into neural circuits.This review focuses on diffe rences between quiescent and active adult neural stem cells in nutrition metabolism and protein homeostasis.Furthermore,we discuss the physiological significance and underlying advantages of these diffe rences.Due to the limited number of adult neural stem cells studies,we refe rred to studies of embryonic adult neural stem cells or non-mammalian adult neural stem cells to evaluate specific mechanisms. 展开更多
关键词 adult neurogenesis cell metabolic pathway cellular proliferation neural stem cell niches neural stem cells neuronal differentiation nutrient sensing pathway PROTEOSTASIS
下载PDF
The MORC2 p.S87L mutation reduces proliferation of pluripotent stem cells derived from a patient with the spinal muscular atrophy-like phenotype by inhibiting proliferation-related signaling pathways 被引量:1
3
作者 Sen Zeng Honglan Yang +8 位作者 Binghao Wang Yongzhi Xie Ke Xu Lei Liu Wanqian Cao Xionghao Liu Beisha Tang Mujun Liu Ruxu Zhang 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第1期205-211,共7页
Mutations in the microrchidia CW-type zinc finger protein 2(MORC2)gene are the causative agent of Charcot-Marie-Tooth disease type 2Z(CMT2Z),and the hotspot mutation p.S87L is associated with a more seve re spinal mus... Mutations in the microrchidia CW-type zinc finger protein 2(MORC2)gene are the causative agent of Charcot-Marie-Tooth disease type 2Z(CMT2Z),and the hotspot mutation p.S87L is associated with a more seve re spinal muscular atrophy-like clinical phenotype.The aims of this study were to determine the mechanism of the severe phenotype caused by the MORC2 p.S87L mutation and to explore potential treatment strategies.Epithelial cells were isolated from urine samples from a spinal muscular atrophy(SMA)-like patient[MORC2 p.S87L),a CMT2Z patient[MORC2 p.Q400R),and a healthy control and induced to generate pluripotent stem cells,which were then differentiated into motor neuron precursor cells.Next-generation RNA sequencing followed by KEGG pathway enrichment analysis revealed that differentially expressed genes involved in the PI3K/Akt and MAP K/ERK signaling pathways were enriched in the p.S87L SMA-like patient group and were significantly downregulated in induced pluripotent stem cells.Reduced proliferation was observed in the induced pluripotent stem cells and motor neuron precursor cells derived from the p.S87L SMA-like patient group compared with the CMT2Z patient group and the healthy control.G0/G1 phase cell cycle arrest was observed in induced pluripotent stem cells derived from the p.S87L SMA-like patient.MORC2 p.S87Lspecific antisense oligonucleotides(p.S87L-ASO-targeting)showed significant efficacy in improving cell prolife ration and activating the PI3K/Akt and MAP K/ERK pathways in induced pluripotent stem cells.Howeve r,p.S87L-ASO-ta rgeting did not rescue prolife ration of motor neuron precursor cells.These findings suggest that downregulation of the PI3K/Akt and MAP K/ERK signaling pathways leading to reduced cell proliferation and G0/G1 phase cell cycle arrest in induced pluripotent stem cells might be the underlying mechanism of the severe p.S87L SMA-like phenotype.p.S87L-ASO-targeting treatment can alleviate disordered cell proliferation in the early stage of pluripotent stem cell induction. 展开更多
关键词 antisense oligonucleotides cell cycle arrest Charcot-Marie-Tooth disease 2Z induced pluripotent stem cells MAPK/ERK PI3K/Akt PROLIFERATION spinal muscular atrophy-like
下载PDF
Evaluation of the intracellular lipid-lowering effect of polyphenols extract from highland barley in HepG2 cells 被引量:1
4
作者 Yijun Yao Zhifang Li +2 位作者 Bowen Qin Xingrong Ju Lifeng Wang 《Food Science and Human Wellness》 SCIE CSCD 2024年第1期454-461,共8页
Active ingredients from highland barley have received considerable attention as natural products for developing treatments and dietary supplements against obesity.In practical application,the research of food combinat... Active ingredients from highland barley have received considerable attention as natural products for developing treatments and dietary supplements against obesity.In practical application,the research of food combinations is more significant than a specific food component.This study investigated the lipid-lowering effect of highland barley polyphenols via lipase assay in vitro and HepG2 cells induced by oleic acid(OA).Five indexes,triglyceride(TG),total cholesterol(T-CHO),low density lipoprotein-cholesterol(LDL-C),aspartate aminotransferase(AST),and alanine aminotransferase(ALT),were used to evaluate the lipidlowering effect of highland barley extract.We also preliminary studied the lipid-lowering mechanism by Realtime fluorescent quantitative polymerase chain reaction(q PCR).The results indicated that highland barley extract contains many components with lipid-lowering effects,such as hyperoside and scoparone.In vitro,the lipase assay showed an 18.4%lipase inhibition rate when the additive contents of highland barley extract were 100μg/m L.The intracellular lipid-lowering effect of highland barley extract was examined using 0.25 mmol/L OA-induced HepG2 cells.The results showed that intracellular TG,LDL-C,and T-CHO content decreased by 34.4%,51.2%,and 18.4%,respectively.ALT and AST decreased by 51.6%and 20.7%compared with the untreated hyperlipidemic HepG2 cells.q PCR results showed that highland barley polyphenols could up-regulation the expression of lipid metabolism-related genes such as PPARγand Fabp4. 展开更多
关键词 Highland barley Polyphenols extract Lipid-lowering effect HepG2 cells
下载PDF
Model reduction of fractional impedance spectra for time–frequency analysis of batteries, fuel cells, and supercapacitors 被引量:1
5
作者 Weiheng Li Qiu-An Huang +6 位作者 Yuxuan Bai Jia Wang Linlin Wang Yuyu Liu Yufeng Zhao Xifei Li Jiujun Zhang 《Carbon Energy》 SCIE EI CAS CSCD 2024年第1期108-141,共34页
Joint time–frequency analysis is an emerging method for interpreting the underlying physics in fuel cells,batteries,and supercapacitors.To increase the reliability of time–frequency analysis,a theoretical correlatio... Joint time–frequency analysis is an emerging method for interpreting the underlying physics in fuel cells,batteries,and supercapacitors.To increase the reliability of time–frequency analysis,a theoretical correlation between frequency-domain stationary analysis and time-domain transient analysis is urgently required.The present work formularizes a thorough model reduction of fractional impedance spectra for electrochemical energy devices involving not only the model reduction from fractional-order models to integer-order models and from high-to low-order RC circuits but also insight into the evolution of the characteristic time constants during the whole reduction process.The following work has been carried out:(i)the model-reduction theory is addressed for typical Warburg elements and RC circuits based on the continued fraction expansion theory and the response error minimization technique,respectively;(ii)the order effect on the model reduction of typical Warburg elements is quantitatively evaluated by time–frequency analysis;(iii)the results of time–frequency analysis are confirmed to be useful to determine the reduction order in terms of the kinetic information needed to be captured;and(iv)the results of time–frequency analysis are validated for the model reduction of fractional impedance spectra for lithium-ion batteries,supercapacitors,and solid oxide fuel cells.In turn,the numerical validation has demonstrated the powerful function of the joint time–frequency analysis.The thorough model reduction of fractional impedance spectra addressed in the present work not only clarifies the relationship between time-domain transient analysis and frequency-domain stationary analysis but also enhances the reliability of the joint time–frequency analysis for electrochemical energy devices. 展开更多
关键词 battery fuel cell supercapacitor fractional impedance spectroscopy model reduction time-frequency analysis
下载PDF
Cell replacement with stem cell-derived retinal ganglion cells from different protocols
6
作者 Ziming Luo Kun-Che Chang 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第4期807-810,共4页
Glaucoma,characterized by a degenerative loss of retinal ganglion cells,is the second leading cause of blindness worldwide.There is currently no cure for vision loss in glaucoma because retinal ganglion cells do not r... Glaucoma,characterized by a degenerative loss of retinal ganglion cells,is the second leading cause of blindness worldwide.There is currently no cure for vision loss in glaucoma because retinal ganglion cells do not regenerate and are not replaced after injury.Human stem cell-derived retinal ganglion cell transplant is a potential therapeutic strategy for retinal ganglion cell degenerative diseases.In this review,we first discuss a 2D protocol for retinal ganglion cell differentiation from human stem cell culture,including a rapid protocol that can generate retinal ganglion cells in less than two weeks and focus on their transplantation outcomes.Next,we discuss using 3D retinal organoids for retinal ganglion cell transplantation,comparing cell suspensions and clusters.This review provides insight into current knowledge on human stem cell-derived retinal ganglion cell differentiation and transplantation,with an impact on the field of regenerative medicine and especially retinal ganglion cell degenerative diseases such as glaucoma and other optic neuropathies. 展开更多
关键词 cell clumps cell suspension cell transplantation DIFFERENTIATION direct-induced protocol GLAUCOMA optic neuropathy regenerative medicine retinal ganglion cell retinal organoids stem cells
下载PDF
The combined application of stem cells and three-dimensional bioprinting scaffolds for the repair of spinal cord injury
7
作者 Dingyue Ju Chuanming Dong 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第8期1751-1758,共8页
Spinal cord injury is considered one of the most difficult injuries to repair and has one of the worst prognoses for injuries to the nervous system.Following surgery,the poor regenerative capacity of nerve cells and t... Spinal cord injury is considered one of the most difficult injuries to repair and has one of the worst prognoses for injuries to the nervous system.Following surgery,the poor regenerative capacity of nerve cells and the generation of new scars can make it very difficult for the impaired nervous system to restore its neural functionality.Traditional treatments can only alleviate secondary injuries but cannot fundamentally repair the spinal cord.Consequently,there is a critical need to develop new treatments to promote functional repair after spinal cord injury.Over recent years,there have been seve ral developments in the use of stem cell therapy for the treatment of spinal cord injury.Alongside significant developments in the field of tissue engineering,three-dimensional bioprinting technology has become a hot research topic due to its ability to accurately print complex structures.This led to the loading of three-dimensional bioprinting scaffolds which provided precise cell localization.These three-dimensional bioprinting scaffolds co uld repair damaged neural circuits and had the potential to repair the damaged spinal cord.In this review,we discuss the mechanisms underlying simple stem cell therapy,the application of different types of stem cells for the treatment of spinal cord injury,and the different manufa cturing methods for three-dimensional bioprinting scaffolds.In particular,we focus on the development of three-dimensional bioprinting scaffolds for the treatment of spinal cord injury. 展开更多
关键词 BIOMATERIALS embryonic stem cells induced pluripotent stem cells mesenchymal stem cells nerve regeneration spinal cord injury stem cell therapy stem cells three-dimensional bioprinting
下载PDF
Mechanism of inflammatory response and therapeutic effects of stem cells in ischemic stroke:current evidence and future perspectives
8
作者 Yubo Wang Tingli Yuan +5 位作者 Tianjie Lyu Ling Zhang Meng Wang Zhiying He Yongjun Wang Zixiao Li 《Neural Regeneration Research》 SCIE CAS 2025年第1期67-81,共15页
Ischemic stroke is a leading cause of death and disability worldwide,with an increasing trend and tendency for onset at a younger age.China,in particular,bears a high burden of stroke cases.In recent years,the inflamm... Ischemic stroke is a leading cause of death and disability worldwide,with an increasing trend and tendency for onset at a younger age.China,in particular,bears a high burden of stroke cases.In recent years,the inflammatory response after stroke has become a research hotspot:understanding the role of inflammatory response in tissue damage and repair following ischemic stroke is an important direction for its treatment.This review summarizes several major cells involved in the inflammatory response following ischemic stroke,including microglia,neutrophils,monocytes,lymphocytes,and astrocytes.Additionally,we have also highlighted the recent progress in various treatments for ischemic stroke,particularly in the field of stem cell therapy.Overall,understanding the complex interactions between inflammation and ischemic stroke can provide valuable insights for developing treatment strategies and improving patient outcomes.Stem cell therapy may potentially become an important component of ischemic stroke treatment. 展开更多
关键词 cell therapy immune cell INFLAMMATORY ischemic stroke stem cell
下载PDF
Long non-coding RNA H19 regulates neurogenesis of induced neural stem cells in a mouse model of closed head injury 被引量:1
9
作者 Mou Gao Qin Dong +4 位作者 Zhijun Yang Dan Zou Yajuan Han Zhanfeng Chen Ruxiang Xu 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第4期872-880,共9页
Stem cell-based therapies have been proposed as a potential treatment for neural regeneration following closed head injury.We previously reported that induced neural stem cells exert beneficial effects on neural regen... Stem cell-based therapies have been proposed as a potential treatment for neural regeneration following closed head injury.We previously reported that induced neural stem cells exert beneficial effects on neural regeneration via cell replacement.However,the neural regeneration efficiency of induced neural stem cells remains limited.In this study,we explored differentially expressed genes and long non-coding RNAs to clarify the mechanism underlying the neurogenesis of induced neural stem cells.We found that H19 was the most downregulated neurogenesis-associated lnc RNA in induced neural stem cells compared with induced pluripotent stem cells.Additionally,we demonstrated that H19 levels in induced neural stem cells were markedly lower than those in induced pluripotent stem cells and were substantially higher than those in induced neural stem cell-derived neurons.We predicted the target genes of H19 and discovered that H19 directly interacts with mi R-325-3p,which directly interacts with Ctbp2 in induced pluripotent stem cells and induced neural stem cells.Silencing H19 or Ctbp2 impaired induced neural stem cell proliferation,and mi R-325-3p suppression restored the effect of H19 inhibition but not the effect of Ctbp2 inhibition.Furthermore,H19 silencing substantially promoted the neural differentiation of induced neural stem cells and did not induce apoptosis of induced neural stem cells.Notably,silencing H19 in induced neural stem cell grafts markedly accelerated the neurological recovery of closed head injury mice.Our results reveal that H19 regulates the neurogenesis of induced neural stem cells.H19 inhibition may promote the neural differentiation of induced neural stem cells,which is closely associated with neurological recovery following closed head injury. 展开更多
关键词 closed head injury Ctbp2 induced neural stem cell lncRNA H19 miR-325-3p NEUROGENESIS
下载PDF
SOCS2对山羊鼻甲骨细胞增殖、周期及凋亡的影响
10
作者 李秋云 田芯源 +5 位作者 廖文圣 张焕容 任玉鹏 杨发龙 朱江江 向华 《畜牧兽医学报》 CAS CSCD 北大核心 2024年第5期2226-2240,共15页
细胞因子信号转导抑制因子2 (suppressor of cytokine signaling 2,SOCS2)在动物体内参与调节多种生理和病理过程,如细胞凋亡、细胞增殖、细胞周期、肿瘤和炎症反应等。本研究在首次克隆山羊SOCS2基因的基础上,研究过表达和干扰SOCS2表... 细胞因子信号转导抑制因子2 (suppressor of cytokine signaling 2,SOCS2)在动物体内参与调节多种生理和病理过程,如细胞凋亡、细胞增殖、细胞周期、肿瘤和炎症反应等。本研究在首次克隆山羊SOCS2基因的基础上,研究过表达和干扰SOCS2表达对山羊鼻甲骨细胞增殖、周期及凋亡的影响。以1周岁的健康简州大耳羊(6只)的心、肝、脾、肺、肾、瘤胃、大肠、小肠和山羊鼻甲骨细胞共9个样本为模板,采用反转录PCR技术克隆山羊SOCS2基因CDS区序列,并进行序列分析。利用RT-qPCR技术检测SOCS2基因在不同组织中的表达。将克隆得到的SOCS2基因CDS区连接载体构建真核表达载体pcDNA3.1-SOCS2。根据山羊SOCS2基因序列设计合成并筛选有效siRNA。利用Lipofectamine^(TM) 3000试剂将pcDNA3.1-SOCS2和siRNA片段分别转染至鼻甲骨细胞,采用蛋白免疫印迹技术检测SOCS2蛋白表达,MTT法检测SOCS2对细胞增殖的影响,流式细胞术检测SOCS2对细胞周期和凋亡的影响,并利用RT-qPCR技术检测细胞周期相关基因p21、CDK2和凋亡相关基因Caspase3、Caspase7、PARP1、p53、Bax、BCL2L11和Bcl-2的转录水平。结果显示,成功扩增山羊SOCS2基因序列,总长为1 065 bp, CDS区长为597 bp,编码198个氨基酸残基。SOCS2基因在肝中表达水平最高;SOCS2可以抑制细胞增殖。成功构建真核表达载体pcDNA3.1-SOCS2,且该基因在鼻甲骨细胞内成功表达。SOCS2过表达可导致G2/M+S期细胞数量显著增加,且下调CDK2和p21基因的mRNA表达;促进细胞凋亡,且上调Caspase3、Caspase7、Bax、p53、BCL2L11、Bcl-2基因的mRNA表达,PARP1表达水平无显著变化。而干扰SOCS2表达后,G0/G1期细胞数量显著升高,且CDK2和p21基因的mRNA表达上调;细胞凋亡被抑制,且Caspase3、Bax、p53、PARP1基因的mRNA表达下调,Caspase7、BCL2L11、Bcl-2基因表达水平无显著变化。综上所述,SOCS2可将细胞周期阻滞在G2/M+S期,促进细胞凋亡,抑制细胞增殖。研究结果为全面揭示山羊SOCS2功能提供试验数据。 展开更多
关键词 山羊 Socs2 细胞增殖 细胞周期 细胞凋亡
下载PDF
Effect of VEGF/GREDVY Modified Surface on Vascular Cells Behavior
11
作者 魏来 TAN Jianying +7 位作者 LI Li WANG Huanran LIU Sainan ZENG Zheng LIU Tao WANG Jian 陈俊英 WENG Yajun 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2024年第1期244-254,共11页
We synthesized B-He/B-GREDVY and immobilized them on avidin-coated surfaces.To examine the immobilization of molecules in the material, the following experiments were performed:fluorescein isothiocyanate(FITC) fluores... We synthesized B-He/B-GREDVY and immobilized them on avidin-coated surfaces.To examine the immobilization of molecules in the material, the following experiments were performed:fluorescein isothiocyanate(FITC) fluorescence staining, water contact angle and atomic force microscopy(AFM) measurements. Besides, the biological evaluation experiments were also performed, such as platelets adhesion and activation, the culturing of smooth muscle cells(SMC) and endothelial cells(EC). These experimental results show that the modified surfaces could prevent the hyperproliferation of SMC, and promote the proliferation and migration of EC and EPC. Furthermore, the adding of VEGF improved the EC adhesion in a dynamic environment. Generally, it is expected that the modified surfaces could be used to accelerate the formation of the newly endothelial layer for the construction of platforms for coronary artery stent therapy. 展开更多
关键词 biotin-GREDVY VEGF ANTICOAGULATION endothelial cells endothelial progenitor cells
下载PDF
Therapeutic and regenerative potential of different sources of mesenchymal stem cells for cardiovascular diseases
12
作者 YARA ALZGHOUL HALA J.BANI ISSA +8 位作者 AHMAD K.SANAJLEH TAQWA ALABDUH FATIMAH RABABAH MAHA AL-SHDAIFAT EJLAL ABU-EL-RUB FATIMAH ALMAHASNEH RAMADA R.KHASAWNEH AYMAN ALZU’BI HUTHAIFA MAGABLEH 《BIOCELL》 SCIE 2024年第4期559-569,共11页
Mesenchymalstemcells(MSCs)areidealcandidatesfortreatingmanycardiovasculardiseases.MSCscanmodify the internal cardiac microenvironment to facilitate their immunomodulatory and differentiation abilities,which are essent... Mesenchymalstemcells(MSCs)areidealcandidatesfortreatingmanycardiovasculardiseases.MSCscanmodify the internal cardiac microenvironment to facilitate their immunomodulatory and differentiation abilities,which are essential to restore heart function.MSCs can be easily isolated from different sources,including bone marrow,adipose tissues,umbilical cord,and dental pulp.MSCs from various sources differ in their regenerative and therapeutic abilities for cardiovascular disorders.In this review,we will summarize the therapeutic potential of each MSC source for heart diseases and highlight the possible molecular mechanisms of each source to restore cardiac function. 展开更多
关键词 Bone marrow mesenchymal stem cells Adipose tissue mesenchymal stem cells Dental pulp stem cells Umbilical cord mesenchymal stem cells CARDIOMYOCYTES REGENERATION Myocardial infarction Mesenchymal stem cells Differentiation IMMUNOMODULATION
下载PDF
Milk fat globule membrane supplementation protects againstβ-lactoglobul-ininduced food allergy in mice via upregulation of regulatory T cells and enhancement of intestinal barrier in a microbiota-derived short-chain fatty acids manner 被引量:1
13
作者 Han Gong Tiange Li +3 位作者 Dong Liang Jingxin Gao Xiaohan Liu Xueying Mao 《Food Science and Human Wellness》 SCIE CSCD 2024年第1期124-136,共13页
Milk fat globule membrane(MFGM),which contains abundant glycoproteins and phospholipids,exerts beneficial effects on intestinal health and immunomodulation.The aim of this study was to evaluate the protective effects ... Milk fat globule membrane(MFGM),which contains abundant glycoproteins and phospholipids,exerts beneficial effects on intestinal health and immunomodulation.The aim of this study was to evaluate the protective effects and possible underlying mechanisms of MFGM on cow’s milk allergy(CMA)in aβ-lactoglobulin(BLG)-induced allergic mice model.MFGM was supplemented to allergic mice induced by BLG at a dose of 400 mg/kg body weight.Results demonstrated that MFGM alleviated food allergy symptoms,decreased serum levels of lipopolysaccharide,pro-inflammatory cytokines,immunoglobulin(Ig)E,Ig G1,and Th2 cytokines including interleukin(IL)-4,while increased serum levels of Th1 cytokines including interferon-γand regulatory T cells(Tregs)cytokines including IL-10 and transforming growth factor-β.MFGM modulated gut microbiota and enhanced intestinal barrier of BLG-allergic mice,as evidenced by decreased relative abundance of Desulfobacterota,Rikenellaceae,Lachnospiraceae,and Desulfovibrionaceae,while increased relative abundance of Bacteroidetes,Lactobacillaceae and Muribaculaceae,and enhanced expressions of tight junction proteins including Occludin,Claudin-1 and zonula occludens-1.Furthermore,MFGM increased fecal short-chain fatty acids(SCFAs)levels,which elevated G protein-coupled receptor(GPR)43 and GPR109A expressions.The increased expressions of GPR43 and GPR109A induced CD103+dendritic cells accumulation and promoted Tregs differentiation in mesenteric lymph node to a certain extent.In summary,MFGM alleviated CMA in a BLG-induced allergic mice model through enhancing intestinal barrier and promoting Tregs differentiation,which may be correlated with SCFAs-mediated activation of GPRs.These findings suggest that MFGM may be useful as a promising functional ingredient against CMA. 展开更多
关键词 Cow’s milk allergy Milk fat globule membrane Gut microbiota Short-chain fatty acid G protein-coupled receptor Regulatory T cell
下载PDF
Meningeal lymphatic vessel crosstalk with central nervous system immune cells in aging and neurodegenerative diseases
14
作者 Minghuang Gao Xinyue Wang +5 位作者 Shijie Su Weicheng Feng Yaona Lai Kongli Huang Dandan Cao Qi Wang 《Neural Regeneration Research》 SCIE CAS 2025年第3期763-778,共16页
Meningeal lymphatic vessels form a relationship between the nervous system and periphery, which is relevant in both health and disease. Meningeal lymphatic vessels not only play a key role in the drainage of brain met... Meningeal lymphatic vessels form a relationship between the nervous system and periphery, which is relevant in both health and disease. Meningeal lymphatic vessels not only play a key role in the drainage of brain metabolites but also contribute to antigen delivery and immune cell activation. The advent of novel genomic technologies has enabled rapid progress in the characterization of myeloid and lymphoid cells and their interactions with meningeal lymphatic vessels within the central nervous system. In this review, we provide an overview of the multifaceted roles of meningeal lymphatic vessels within the context of the central nervous system immune network, highlighting recent discoveries on the immunological niche provided by meningeal lymphatic vessels. Furthermore, we delve into the mechanisms of crosstalk between meningeal lymphatic vessels and immune cells in the central nervous system under both homeostatic conditions and neurodegenerative diseases, discussing how these interactions shape the pathological outcomes. Regulation of meningeal lymphatic vessel function and structure can influence lymphatic drainage, cerebrospinal fluid-borne immune modulators, and immune cell populations in aging and neurodegenerative disorders, thereby playing a key role in shaping meningeal and brain parenchyma immunity. 展开更多
关键词 central nervous system meningeal lymphatic vessels IMMUNITY myeloid cells lymphatic cells neurodegenerative disease
下载PDF
Mesenchymal stem cells for repairing glaucomatous optic nerve
15
作者 Bai-Yu Hu Mei Xin +2 位作者 Ming Chen Ping Yu Liu-Zhi Zeng 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2024年第4期748-760,共13页
Glaucoma is a common and complex neurodegenerative disease characterized by progressive loss of retinal ganglion cells(RGCs)and axons.Currently,there is no effective method to address the cause of RGCs degeneration.Ho... Glaucoma is a common and complex neurodegenerative disease characterized by progressive loss of retinal ganglion cells(RGCs)and axons.Currently,there is no effective method to address the cause of RGCs degeneration.However,studies on neuroprotective strategies for optic neuropathy have increased in recent years.Cell replacement and neuroprotection are major strategies for treating glaucoma and optic neuropathy.Regenerative medicine research into the repair of optic nerve damage using stem cells has Received considerable attention.Stem cells possess the potential for multidirectional differentiation abilities and are capable of producing RGCfriendly microenvironments through paracrine effects.This article reviews a thorough researches of recent advances and approaches in stem cell repair of optic nerve injury,raising the controversies and unresolved issues surrounding the future of stem cells. 展开更多
关键词 stem cell GLAUCOMA retinal ganglion cell optic nerve axon regeneration
下载PDF
An overview of autophagy in the differentiation of dental stem cells
16
作者 XITONG ZHAO TIANJUAN JU +3 位作者 XINWEI LI CHANGFENG LIU LULU WANG LI-AN WU 《BIOCELL》 SCIE 2024年第1期47-64,共18页
Dental stem cells(DSCs)have attracted significant interest as autologous stem cells since they are easily accessible and give a minimal immune response.These properties and their ability to both maintain self-renewal ... Dental stem cells(DSCs)have attracted significant interest as autologous stem cells since they are easily accessible and give a minimal immune response.These properties and their ability to both maintain self-renewal and undergo multi-lineage differentiation establish them as key players in regenerative medicine.While many regulatory factors determine the differentiation trajectory of DSCs,prior research has predominantly been based on genetic,epigenetic,and molecular aspects.Recent evidence suggests that DSC differentiation can also be influenced by autophagy,a highly conserved cellular process responsible for maintaining cellular and tissue homeostasis under various stress conditions.This comprehensive review endeavors to elucidate the intricate regulatory mechanism and relationship between autophagy and DSC differentiation.To achieve this goal,we dissect the intricacies of autophagy and its mechanisms.Subsequently,we elucidate its pivotal roles in impacting DSC differentiation,including osteo/odontogenic,neurogenic,and angiogenic trajectories.Furthermore,we reveal the regulatory factors that govern autophagy in DSC lineage commitment,including scaffold materials,pharmaceutical cues,and the extrinsic milieu.The implications of this review are far-reaching,underpinning the potential to wield autophagy as a regulatory tool to expedite DSC-directed differentiation and thereby promote the application of DSCs within the realm of regenerative medicine. 展开更多
关键词 Dental stem cells Cell differentiation AUTOPHAGY MITOPHAGY Autophagy regulation
下载PDF
High quality repair of osteochondral defects in rats using the extracellular matrix of antler stem cells
17
作者 Yu-Su Wang Wen-Hui Chu +4 位作者 Jing-Jie Zhai Wen-Ying Wang Zhong-Mei He Quan-Min Zhao Chun-Yi Li 《World Journal of Stem Cells》 SCIE 2024年第2期176-190,共15页
BACKGROUND Cartilage defects are some of the most common causes of arthritis.Cartilage lesions caused by inflammation,trauma or degenerative disease normally result in osteochondral defects.Previous studies have shown... BACKGROUND Cartilage defects are some of the most common causes of arthritis.Cartilage lesions caused by inflammation,trauma or degenerative disease normally result in osteochondral defects.Previous studies have shown that decellularized extracellular matrix(ECM)derived from autologous,allogenic,or xenogeneic mesenchymal stromal cells(MSCs)can effectively restore osteochondral integrity.AIM To determine whether the decellularized ECM of antler reserve mesenchymal cells(RMCs),a xenogeneic material from antler stem cells,is superior to the currently available treatments for osteochondral defects.METHODS We isolated the RMCs from a 60-d-old sika deer antler and cultured them in vitro to 70%confluence;50 mg/mL L-ascorbic acid was then added to the medium to stimulate ECM deposition.Decellularized sheets of adipocyte-derived MSCs(aMSCs)and antlerogenic periosteal cells(another type of antler stem cells)were used as the controls.Three weeks after ascorbic acid stimulation,the ECM sheets were harvested and applied to the osteochondral defects in rat knee joints.RESULTS The defects were successfully repaired by applying the ECM-sheets.The highest quality of repair was achieved in the RMC-ECM group both in vitro(including cell attachment and proliferation),and in vivo(including the simultaneous regeneration of well-vascularized subchondral bone and avascular articular hyaline cartilage integrated with surrounding native tissues).Notably,the antler-stem-cell-derived ECM(xenogeneic)performed better than the aMSC-ECM(allogenic),while the ECM of the active antler stem cells was superior to that of the quiescent antler stem cells.CONCLUSION Decellularized xenogeneic ECM derived from the antler stem cell,particularly the active form(RMC-ECM),can achieve high quality repair/reconstruction of osteochondral defects,suggesting that selection of decellularized ECM for such repair should be focused more on bioactivity rather than kinship. 展开更多
关键词 Osteochondral defect repair Mesenchymal stem cells Extracellular matrix DECELLULARIZATION Antler stem cells Reserve mesenchymal cells Xenogeneic
下载PDF
Surface-functionalized hole-selective monolayer for high efficiency single-junction wide-bandgap and monolithic tandem perovskite solar cells
18
作者 Devthade Vidyasagar Yeonghun Yun +13 位作者 Jae Yu Cho Hyemin Lee Kyung Won Kim Yong Tae Kim Sung Woong Yang Jina Jung Won Chang Choi Seonu Kim Rajendra Kumar Gunasekaran Seok Beom Kang Kwang Heo Dong Hoe Kim Jaeyeong Heo Sangwook Lee 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2024年第1期317-326,I0008,共11页
Carbazole moiety-based 2PACz([2-(9H-carbazol-9-yl)ethyl]phosphonic acid)self-assembled monolayers(SAMs)are excellent hole-selective contact(HSC)materials with abilities to excel the charge-transferdynamics of perovski... Carbazole moiety-based 2PACz([2-(9H-carbazol-9-yl)ethyl]phosphonic acid)self-assembled monolayers(SAMs)are excellent hole-selective contact(HSC)materials with abilities to excel the charge-transferdynamics of perovskite solar cells(PSCs).Herein,we report a facile but powerful method to functionalize the surface of 2PACz-SAM,by which reproducible,highly stable,high-efficiency wide-bandgap PSCs can be obtained.The 2PACz surface treatment with various donor number solvents improves assembly of 2PACz-SAM and leave residual surface-bound solvent molecules on 2PACz-SAM,which increases perovskite grain size,retards halide segregation,and accelerates hole extraction.The surface functionalization achieves a high power conversion efficiency(PCE)of 17.62%for a single-junction wide-bandgap(~1.77 e V)PSC.We also demonstrate a monolithic all-perovskite tandem solar cell using surfaceengineered HSC,showing high PCE of 24.66%with large open-circuit voltage of 2.008 V and high fillfactor of 81.45%.Our results suggest this simple approach can further improve the tandem device,when coupled with a high-performance narrow-bandgap sub-cell. 展开更多
关键词 Perovskite solar cells 2PACz Monolithic tandem solar cells Wide bandgap
下载PDF
Mesenchymal stem cells’“garbage bags”at work:Treating radial nerve injury with mesenchymal stem cell-derived exosomes
19
作者 Mazhar Mushtaq Doaa Hussein Zineldeen +1 位作者 Muhammad Abdul Mateen Khawaja Husnain Haider 《World Journal of Stem Cells》 SCIE 2024年第5期467-478,共12页
Unlike central nervous system injuries,peripheral nerve injuries(PNIs)are often characterized by more or less successful axonal regeneration.However,structural and functional recovery is a senile process involving mul... Unlike central nervous system injuries,peripheral nerve injuries(PNIs)are often characterized by more or less successful axonal regeneration.However,structural and functional recovery is a senile process involving multifaceted cellular and molecular processes.The contemporary treatment options are limited,with surgical intervention as the gold-standard method;however,each treatment option has its associated limitations,especially when the injury is severe with a large gap.Recent advancements in cell-based therapy and cell-free therapy approaches using stem cell-derived soluble and insoluble components of the cell secretome are fast-emerging therapeutic approaches to treating acute and chronic PNI.The recent pilot study is a leap forward in the field,which is expected to pave the way for more enormous,systematic,and well-designed clinical trials to assess the therapeutic efficacy of mesenchymal stem cell-derived exosomes as a bio-drug either alone or as part of a combinatorial approach,in an attempt synergize the best of novel treatment approaches to address the complexity of the neural repair and regeneration. 展开更多
关键词 EXOSOME Mesenchymal stem cells Nerve injury Stem cells SECRETOME Regeneration
下载PDF
Unlocking the versatile potential:Adipose-derived mesenchymal stem cells in ocular surface reconstruction and oculoplastics
20
作者 Pier Luigi Surico Anna Scarabosio +5 位作者 Giovanni Miotti Martina Grando Carlo Salati Pier Camillo Parodi Leopoldo Spadea Marco Zeppieri 《World Journal of Stem Cells》 SCIE 2024年第2期89-101,共13页
This review comprehensively explores the versatile potential of mesenchymal stem cells(MSCs)with a specific focus on adipose-derived MSCs.Ophthalmic and oculoplastic surgery,encompassing diverse procedures for ocular ... This review comprehensively explores the versatile potential of mesenchymal stem cells(MSCs)with a specific focus on adipose-derived MSCs.Ophthalmic and oculoplastic surgery,encompassing diverse procedures for ocular and periocular enhancement,demands advanced solutions for tissue restoration,functional and aesthetic refinement,and aging.Investigating immunomodulatory,regenerative,and healing capacities of MSCs,this review underscores the potential use of adipose-derived MSCs as a cost-effective alternative from bench to bedside,addressing common unmet needs in the field of reconstructive and regenerative surgery. 展开更多
关键词 Stem cells Adipose stem cell Ocular therapy Oculoplastics REGENERATIVE
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部