期刊文献+
共找到16,196篇文章
< 1 2 250 >
每页显示 20 50 100
基于FBS-TRIZ的园艺拖拉机设计研究
1
作者 董佳丽 张健瑞 郑明霄 《包装工程》 CAS 北大核心 2024年第4期115-122,共8页
目的关注园艺拖拉机使用过程中驾驶者的相关行为,提取园艺拖拉机驾驶者的使用需求,并将其转化为产品技术特性的设计要求,提升园艺拖拉机驾驶者的用户需求满意度。方法将FBS-TRIZ理论融合作为研究园艺拖拉机功能需求映射的方法。通过对... 目的关注园艺拖拉机使用过程中驾驶者的相关行为,提取园艺拖拉机驾驶者的使用需求,并将其转化为产品技术特性的设计要求,提升园艺拖拉机驾驶者的用户需求满意度。方法将FBS-TRIZ理论融合作为研究园艺拖拉机功能需求映射的方法。通过对用户行为特征的分析,结合用户访谈、问卷调研等方式获取用户需求,运用FBS模型,构建出园艺拖拉机功能需求模型,将行为作为连接功能需求与产品结构的纽带,通过分析获取解决设计问题的方法;运用TRIZ理论进行冲突问题的分析与转化,并针对设计层面产品特性的矛盾提出解决方案。结论FBS与TRIZ理论的融合应用能够将用户需求精准转化为技术特性层面的设计要求,对园艺拖拉机用户需求设计方面的不足提出了相应的解决方案,为设计师提供了将用户需求向功能结构的映射转化的指导,验证了该方法的有效性。 展开更多
关键词 用户需求 园艺拖拉机 fbS TRIZ
下载PDF
Activation of endogenous neurogenesis and angiogenesis by basic fibroblast growth factor-chitosan gel in an adult rat model of ischemic stroke 被引量:2
2
作者 Hongmei Duan Shulun Li +11 位作者 Peng Hao Fei Hao Wen Zhao Yudan Gao Hui Qiao Yiming Gu Yang Lv Xinjie Bao Kin Chiu Kwok-Fai So Zhaoyang Yang Xiaoguang Li 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第2期409-415,共7页
Attempts have been made to use cell transplantation and biomaterials to promote cell proliferation,differentiation,migration,and survival,as well as angiogenesis,in the context of brain injury.However,whether bioactiv... Attempts have been made to use cell transplantation and biomaterials to promote cell proliferation,differentiation,migration,and survival,as well as angiogenesis,in the context of brain injury.However,whether bioactive materials can repair the damage caused by ischemic stroke by activating endogenous neurogenesis and angiogenesis is still unknown.In this study,we applied chitosan gel loaded with basic fibroblast growth factor to the stroke cavity 7 days after ischemic stroke in rats.The gel slowly released basic fibroblast growth factor,which improved the local microenvironment,activated endogenous neural stem/progenitor cells,and recruited these cells to migrate toward the penumbra and stroke cavity and subsequently differentiate into neurons,while enhancing angiogenesis in the penumbra and stroke cavity and ultimately leading to partial functional recovery.This study revealed the mechanism by which bioactive materials repair ischemic strokes,thus providing a new strategy for the clinical application of bioactive materials in the treatment of ischemic stroke. 展开更多
关键词 adult endogenous neurogenesis ANGIOGENESIS basic fibroblast growth factor-chitosan gel CHITOSAN functional recovery ischemic stroke neural stem cell newborn neuron
下载PDF
基于AHP/QFD/FBS模型的果园管理机创新设计研究
3
作者 文俊中 石元伍 朱玮辰 《包装工程》 CAS 北大核心 2024年第2期99-109,124,共12页
目的 改善本土农机装备现行设计流程在方案创新中的不足,实现果园管理机要素的优化和设计的创新。方法 面向农业4.0场景应用,引入工业设计创新思维到农机装备设计,构建层次分析法(AHP)、质量功能展开(QFD)和FBS(Function-Behavior-Struc... 目的 改善本土农机装备现行设计流程在方案创新中的不足,实现果园管理机要素的优化和设计的创新。方法 面向农业4.0场景应用,引入工业设计创新思维到农机装备设计,构建层次分析法(AHP)、质量功能展开(QFD)和FBS(Function-Behavior-Structure)模型相结合的创新设计流程。首先,通过AHP和QFD的分析过程,将用户需求转化为关键产品特性。然后,结合相关特性指标,优化、更新、重组产品功能的内在属性,逐步建立概念性功能系统。最后,通过FBS模型的“功能-行为-结构”映射,求解功能实现的结构载体,以满足产品功能创新和结构要素为设计条件。最终完成果园管理机创新设计。结果 集成AHP/QFD/FBS的创新设计流程包含完整的需求分析、特性发掘、功能创新和结构求解过程。通过设计实践,果园管理机在用户体验、功能配置、适应性和智能化方面得到了提升。结论 该流程在农机装备方案创新中呈现出的有效性,能够为农业4.0中相关产品设计提供新思路和参考。 展开更多
关键词 农业4.0 果园管理机 创新设计 功能创新 fbS模型
下载PDF
基于QFD-FBS的儿童游泳辅助产品创新设计研究
4
作者 王军 刘晓彤 +2 位作者 刘敬妍 金信 徐宇飞 《包装工程》 CAS 北大核心 2024年第4期200-206,共7页
目的为消除儿童游泳时的恐水心理,助其更好地学习游泳,探索儿童游泳辅助产品的创新设计路径。方法首先,采用实地问卷调查法提取儿童初学游泳的需求并在层次分析法(AHP)中筛选出最大权重项;其次,运用QFD建立“用户需求-设计要求”关系矩... 目的为消除儿童游泳时的恐水心理,助其更好地学习游泳,探索儿童游泳辅助产品的创新设计路径。方法首先,采用实地问卷调查法提取儿童初学游泳的需求并在层次分析法(AHP)中筛选出最大权重项;其次,运用QFD建立“用户需求-设计要求”关系矩阵,将关键设计目标转化为主要功能;最后,在FBS模型中映射出功能对应的结构模块。结果提出儿童游泳辅助产品以用户行为需求为导向的四大功能模块,即预警功能模块、学习功能模块、娱乐功能模块、调节功能模块,并以此为起点完成功能层-行为层-结构层的映射,从而指导游泳辅助产品的创新设计表现。结论QFD-FBS相结合能够填补空白点,在游泳辅助产品创新开发领域具有较好的指导意义,提高了儿童学习游泳的满意度,为游泳辅助产品设计领域引入新思路。 展开更多
关键词 QFD fbS 多功能模块 游泳辅助浮板 儿童创新产品
下载PDF
结合FAST-FAHP-FBS整合模型的适老化智能床头柜设计研究
5
作者 刘继坛 郁舒兰 《设计》 2024年第11期102-105,共4页
为了优化现有适老化智能床头柜设计,改善当今适老化家具市场存在的定位失焦、同质化严重、智能乱象等问题。首先,依据扎根理论构建需求体系,通过FAST理论将需求转化为功能并进一步功能细化;其次,采用FAHP进行功能权重求解。基于权重计... 为了优化现有适老化智能床头柜设计,改善当今适老化家具市场存在的定位失焦、同质化严重、智能乱象等问题。首先,依据扎根理论构建需求体系,通过FAST理论将需求转化为功能并进一步功能细化;其次,采用FAHP进行功能权重求解。基于权重计算结果并借助FBS将权重较高的功能转化为结构设计点进行设计,应用模糊综合评价方法进行设计反馈。FAST-FAHP-FBS整合模型设计流程将质性与量化研究整合,将适老化智能床头柜设计建立于用户需求之上,为今后适老化家具的设计提供理论与实践参考。 展开更多
关键词 适老化家具 FAST FAHP fbS 模糊综合评价
下载PDF
The Combined Effect of Lumenato and Ceramide in the Protection of Collagen Damage Induced by Neutrophils in Normal Human Dermal Fibroblasts
6
作者 Yulia Solomonov Rachel Levy 《Advances in Bioscience and Biotechnology》 CAS 2024年第2期140-159,共20页
Introduction: Collagen is the primary structural protein fibroblasts produce in the skin’s extracellular matrix. Infiltration of neutrophils into the epidermis and dermis by exposure to UV causes collagen damage and ... Introduction: Collagen is the primary structural protein fibroblasts produce in the skin’s extracellular matrix. Infiltration of neutrophils into the epidermis and dermis by exposure to UV causes collagen damage and contributes to photoaging. Methods: To study the combined effect of Lumenato and ceramide in preventing collagen-1 damage induced by phagocytes, we used co-cultures of normal human dermal fibroblasts (fibroblasts) and activated human neutrophils. The present study aimed to determine the protective effect of the combination of Lumenato and ceramide on fibroblast collagen-1 damage induced by neutrophils. Results: Lumenato (in the range of 6.5 - 208 μg/ml) or ceramide (in the range of 0.1 - 50 μM) inhibited the production of superoxides and MPO by TNFα-stimulated neutrophils, as well as the production of NO by LPS-stimulated macrophages in a dose-dependent manner. The combinations of Lumenato and ceramide, in low concentrations, caused synergistic prevention of fibroblasts’ collagen-1 damage induced by TNFα-activated neutrophils, detected by fluorescence immunostaining and WB analysis. MPO activity in the supernatants of the co-cultures was also synergistically inhibited. Adding Lumenato or ceramide singly or in combinations in these low concentrations to the fibroblast cultures did not affect the expression of collagen-1. The combinations of Lumenato or ceramide in these concentrations also caused a synergistic inhibition of NO production by activated macrophages. Conclusions: The results suggest that combining low concentrations of Lumenato and ceramide results in synergistic protection against fibroblasts’ collagen-1 damage induced by neutrophils, thus indicating their possible potential for enhanced skin health. 展开更多
关键词 Dermal fibroblasts NEUTROPHILS Collagen-1 Lumenato CERAMIDE
下载PDF
Lysine demethylase 5B transcriptionally regulates TREM1 in human cardiac fibroblasts
7
作者 CHUNLING LIANG JING CHEN +2 位作者 XIAOJIE CHEN WEI YAN JIE YU 《BIOCELL》 SCIE 2024年第7期1105-1113,共9页
Background:A differential gene,triggering receptor expressed on myeloid cells 1(TREM1),was identified in blood sequencing datasets from myocardial infarction patients and healthy controls.Myocardialfibrosis following my... Background:A differential gene,triggering receptor expressed on myeloid cells 1(TREM1),was identified in blood sequencing datasets from myocardial infarction patients and healthy controls.Myocardialfibrosis following myocardial infarction significantly contributes to cardiac dysfunction.Objectives:This study aimed to unveil the intrinsic regulatory mechanism of TREM1 in myocardialfibrosis.Methods:Mimicking pathology by angiotensin II(Ang II)treatment of human cardiacfibroblasts(HCFs),the impacts of TREM1 knockdown on its proliferation,migration,and secretion of the pro-fibrotic matrix were identified.Using the Human Transcription Factor Database(HumanTFDB)website,lysine-specific demethylase 5B(KDM5B)was found to bind to the TREM1 promoter,which was further validated through luciferase reporter and chromatin immunoprecipitation(ChIP).By promoting KDM5B overexpression,its effect on the regulation of TREM1 was examined.Results:TREM1 knockdown suppressed the proliferation,migration,and secretion of the pro-fibrotic matrix in HCFs upon Ang II treatment.KDM5B bound to the TREM1 promoter and upregulated its transcriptional expression.Furthermore,KDM5B overexpression reversed the regulation of the above cellular phenotypes by TREM1 knockdown.Conclusion:This study sheds light on the positive regulation of TREM1 by KDM5B,demonstrating their role in promoting myocardialfibrosis.Thisfinding provides a theoretical foundation for understanding disease pathology and potentially advancing the development of new targeted therapies. 展开更多
关键词 Cardiac fibroblasts FIBROSIS Myeloid cell receptor MIGRATION PROLIFERATION
下载PDF
CRABP2 regulates infiltration of cancer-associated fibroblasts and immune response in melanoma
8
作者 SHUANGSHUANG ZENG XI CHEN +4 位作者 QIAOLI YI ABHIMANYU THAKUR HUI YANG YUANLIANG YAN SHAO LIU 《Oncology Research》 SCIE 2024年第2期261-272,共12页
Finding biomarkers for immunotherapy is an urgent issue in cancer treatment.Cellular retinoic acid-binding protein 2(CRABP2)is a controversial factor in the occurrence and development of human tumors.However,there is ... Finding biomarkers for immunotherapy is an urgent issue in cancer treatment.Cellular retinoic acid-binding protein 2(CRABP2)is a controversial factor in the occurrence and development of human tumors.However,there is limited research on the relationship between CRABP2 and immunotherapy response.This study found that negative correlations of CRABP2 and immune checkpoint markers(PD-1,PD-L1,and CTLA-4)were observed in breast invasive carcinoma(BRCA),skin cutaneous melanoma(SKCM),stomach adenocarcinoma(STAD)and testicular germ cell tumors(TGCT).In particular,in SKCM patients who were treated with PD-1 inhibitors,high levels of CRABP2 predicted poor prognosis.Additionally,CRABP2 expression was elevated in cancer-associated fibroblasts(CAFs)at the single-cell level.The expression of CRABP2 was positively correlated with markers of CAFs,such as MFAP5,PDPN,ITGA11,PDGFRα/βand THY1 in SKCM.To validate the tumor-promoting effect of CRABP2 in vivo,SKCM xenograft mice models with CRABP2 overexpression have been constructed.These models showed an increase in tumor weight and volume.Enrichment analysis indicated that CRABP2 may be involved in immunerelated pathways of SKCM,such as extracellular matrix(ECM)receptor interaction and epithelial-mesenchymal transition(EMT).The study suggests that CRABP2 may regulate immunotherapy in SKCM patients by influencing infiltration of CAFs.In conclusion,this study provides new insights into the role of CRABP2 in immunotherapy response.The findings suggest that CRABP2 may be a promising biomarker for PD-1 inhibitors in SKCM patients.Further research is needed to confirm these findings and to explore the clinical implications of CRABP2 in immunotherapy. 展开更多
关键词 CRABP2 MELANOMA PD-1 Cancer-associated fibroblasts Immune infiltration
下载PDF
Effects of Serum Concentration, Synchronization Time and Confluence on the Cell-Cycle Synchronization Efficiency of Goat Fibroblasts
9
作者 Van Khanh Nguyen Huong Thu Thi Vu +4 位作者 Au Thi Hoang Yen Kim Thi Pham Giang Thi Thanh Nhan Hung Phu Lai Lan Doan Pham 《Open Journal of Animal Sciences》 2024年第3期194-203,共10页
This study aims to evaluate the effect of serum concentration, synchronization time, and confluence degree on the synchronisation efficiency of goat fibroblast cycle. The results indicated that there was no difference... This study aims to evaluate the effect of serum concentration, synchronization time, and confluence degree on the synchronisation efficiency of goat fibroblast cycle. The results indicated that there was no difference in the percentage of nucleated fibroblasts in the G0/G1 stage between serum concentrations of 0.3% and 0.4% (83.89% and 82.69%, respectively, P > 0.05) as well as between serum concentrations of 0.2% and 0.5% (76.95% and 75.46%, respectively, P > 0.05). The percentage of nucleated fibroblasts in the G0/G1 stage was highest at the concentration of 0.3% and lowest in the control group (83.89% vs. 62.67%, P 0.05). The beneficial effect of high confluence was confirmed by the large percentage of nucleated fibroblasts at the G0/G1 stage. The 60% confluency was significantly lower than the 80% and 100% confluency (73.44%, 86.63%, and 87.17%, respectively, P < 0.05). The results indicate that the goat fibroblast cycle synchronization is the most effective at the serum concentration of 0.3%, 72 hours of synchronization and 100% confluency. 展开更多
关键词 Goat fibroblast Cycle Synchronisation Serum Concentration Synchronization Time CONFLUENCE
下载PDF
Uniportal video-assisted thoracoscopic fissureless right upper lobe anterior segmentectomy for inflammatory myofibroblastic tumor:A case report
10
作者 Seha Ahn Youngkyu Moon 《World Journal of Clinical Cases》 SCIE 2024年第2期425-430,共6页
BACKGROUND Inflammatory myofibroblastic tumors(IMTs)are exceptionally rare neoplasms with intermediate malignant potential.Surgery is the accepted treatment option,aiming for complete resection with clear margins.CASE... BACKGROUND Inflammatory myofibroblastic tumors(IMTs)are exceptionally rare neoplasms with intermediate malignant potential.Surgery is the accepted treatment option,aiming for complete resection with clear margins.CASE SUMMARY A 39-year-old woman presented with a growing solitary pulmonary nodule measuring 2.0 cm in the right upper lobe(RUL)of the lung.The patient underwent a RUL anterior segmentectomy using uniportal video-assisted thoracoscopy.A preliminary tissue diagnosis indicated malignancy;however,it was later revised to an IMTs.Due to the absence of a minor fissure between the right upper and middle lobes,an alternative resection approach was necessary.Therefore,we utilized indocyanine green injection to aid in delineating the intersegmental plane.Following an uneventful recovery,the patient was discharged on the third postoperative day.Thereafter,annual chest tomography scans were scheduled to monitor for potential local recurrence.CONCLUSION This case underscores the challenges in diagnosing and managing IMTs,showing the importance of accurate pathologic assessments and tailored surgical strategies. 展开更多
关键词 Uniportal video-assisted thoracoscopic surgery Fissureless Anterior segmentectomy Inflammatory fibroblastic tumor Case report
下载PDF
Impact of STAT-signaling pathway on cancer-associated fibroblasts in colorectal cancer and its role in immunosuppression
11
作者 Damián Sánchez-Ramírez Mónica G Mendoza-Rodríguez +7 位作者 Omar R Alemán Fernando A Candanedo-González Miriam Rodríguez-Sosa Juan JoséMontesinos-Montesinos Mauricio Salcedo Ismael Brito-Toledo Felipe Vaca-Paniagua Luis I Terrazas 《World Journal of Gastrointestinal Oncology》 SCIE 2024年第5期1705-1724,共20页
Colorectal cancer(CRC)remains one of the most commonly diagnosed and deadliest types of cancer worldwide.CRC displays a desmoplastic reaction(DR)that has been inversely associated with poor prognosis;less DR is associ... Colorectal cancer(CRC)remains one of the most commonly diagnosed and deadliest types of cancer worldwide.CRC displays a desmoplastic reaction(DR)that has been inversely associated with poor prognosis;less DR is associated with a better prognosis.This reaction generates excessive connective tissue,in which cancer-associated fibroblasts(CAFs)are critical cells that form a part of the tumor microenvironment.CAFs are directly involved in tumorigenesis through different mechanisms.However,their role in immunosuppression in CRC is not well understood,and the precise role of signal transducers and activators of transcription(STATs)in mediating CAF activity in CRC remains unclear.Among the myriad chemical and biological factors that affect CAFs,different cytokines mediate their function by activating STAT signaling pathways.Thus,the harmful effects of CAFs in favoring tumor growth and invasion may be modulated using STAT inhibitors.Here,we analyze the impact of different STATs on CAF activity and their immunoregulatory role. 展开更多
关键词 Cancer-associated fibroblasts Signal transducer and activator of transcription signaling Colorectal cancer IMMUNITY IMMUNOSUPPRESSION
下载PDF
Fibroblast growth factor 21 inhibits ferroptosis following spinal cord injury by regulating heme oxygenase-1
12
作者 Qi Gu Weiping Sha +8 位作者 Qun Huang Jin Wang Yi Zhu Tianli Xu Zhenhua Xu Qiancheng Zhu Jianfei Ge Shoujin Tian Xiaolong Lin 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第7期1568-1574,共7页
Interfering with the ferroptosis pathway is a new strategy for the treatment of spinal cord injury.Fibroblast growth factor 21 can inhibit ferro ptosis and promote neurofunctional recovery,while heme oxygenase-1 is a ... Interfering with the ferroptosis pathway is a new strategy for the treatment of spinal cord injury.Fibroblast growth factor 21 can inhibit ferro ptosis and promote neurofunctional recovery,while heme oxygenase-1 is a regulator of iron and reactive oxygen species homeostasis.The relationship between heme oxygenase-1and ferroptosis remains controve rsial.In this study,we used a spinal co rd injury rat model to show that the levels of fibroblast growth factor 21 in spinal co rd tissue decreased after spinal cord injury.In addition,there was a significant aggravation of ferroptosis and a rapid increase in heme oxygenase-1 expression after spinal cord injury.Furthe r,heme oxygenase-1 aggravated fe rroptosis after spinal cord injury,while fibroblast growth factor 21 inhibited fe rroptosis by downregulating heme oxygenase-1.Thus,the activation of fibroblast growth factor 21 may provide a potential treatment for spinal co rd injury.These findings could provide a new potential mechanistic explanation for fibroblast growth factor 21 in the treatment of spinal cord injury. 展开更多
关键词 ferroptosis fibroblast growth factor 21 functional recovery heme oxygenase-1 lipid peroxidation NEURON reactive oxygen species spinal cord injury
下载PDF
Roles of fibroblast growth factors in the treatment of diabetes
13
作者 Chun-Ye Zhang Ming Yang 《World Journal of Diabetes》 SCIE 2024年第3期392-402,共11页
Diabetes affects about 422 million people worldwide,causing 1.5 million deaths each year.However,the incidence of diabetes is increasing,including several types of diabetes.Type 1 diabetes(5%-10%of diabetic cases)and ... Diabetes affects about 422 million people worldwide,causing 1.5 million deaths each year.However,the incidence of diabetes is increasing,including several types of diabetes.Type 1 diabetes(5%-10%of diabetic cases)and type 2 diabetes(90%-95%of diabetic cases)are the main types of diabetes in the clinic.Accumulating evidence shows that the fibroblast growth factor(FGF)family plays important roles in many metabolic disorders,including type 1 and type 2 diabetes.FGF consists of 23 family members(FGF-1-23)in humans.Here,we review current findings of FGFs in the treatment of diabetes and management of diabetic complications.Some FGFs(e.g.,FGF-15,FGF-19,and FGF-21)have been broadly investigated in preclinical studies for the diagnosis and treatment of diabetes,and their therapeutic roles in diabetes are currently under investigation in clinical trials.Overall,the roles of FGFs in diabetes and diabetic complications are involved in numerous processes.First,FGF intervention can prevent high-fat diet-induced obesity and insulin resistance and reduce the levels of fasting blood glucose and triglycerides by regulating lipolysis in adipose tissues and hepatic glucose production.Second,modulation of FGF expression can inhibit renal and cardiac fibrosis by regulating the expression of extracellular matrix components,promote diabetic wound healing process and bone repair,and inhibit cancer cell proliferation and migration.Finally,FGFs can regulate the activation of glucoseexcited neurons and the expression of thermogenic genes. 展开更多
关键词 fibroblast growth factors Type 1 diabetes Type 2 diabetes Metabolic disorders TREATMENT Clinical trials
下载PDF
基于Kano-FBS模型的智能桌面便签机设计
14
作者 韩康 唐昌乔 《工业设计》 2024年第4期87-90,共4页
为帮助办公人群更高效率地完成工作并获得更多乐趣,同时缓解工作压力,将使用便利贴记事这一行为向智能化趋势靠拢,文章首先基于Kano模型深入分析智能桌面便签机用户需求,确定功能特性类型,并明确相对重要的用户体验需求。其次采用FBS模... 为帮助办公人群更高效率地完成工作并获得更多乐趣,同时缓解工作压力,将使用便利贴记事这一行为向智能化趋势靠拢,文章首先基于Kano模型深入分析智能桌面便签机用户需求,确定功能特性类型,并明确相对重要的用户体验需求。其次采用FBS模型将关键需求与产品设计相对应,确保设计方案的合理性。最后通过理论模型的应用得到更具创新性和实用性的设计方案,提高用户工作效率的同时增添趣味性,为办公用品创新发展和改进提供有针对性的指导。 展开更多
关键词 工业设计 智能办公用品 KANO模型 fbS模型 创新设计
下载PDF
Attenuation of the Activation of NLRP3 Inflammasome in Fibroblast Like Synoviocytes of Rheumatoid Arthritis by Baicalin through Regulating the Let-7i-3p/PI3K/Akt/NF-κB Signaling Axis
15
作者 Wei ZHANG Li WANG +4 位作者 Yuxin YANG Rui MA Li WANG Ling HUANG Qiaofeng WAN 《Medicinal Plant》 2024年第2期69-73,76,共6页
[Objectives]To study the effect and mechanism of baicalin on the activation of NLRP3 inflammasome in human fibroblast like synoviocytes of rheumatoid arthritis(HFLS-RA).[Methods]To confirm that baicalin alleviated the... [Objectives]To study the effect and mechanism of baicalin on the activation of NLRP3 inflammasome in human fibroblast like synoviocytes of rheumatoid arthritis(HFLS-RA).[Methods]To confirm that baicalin alleviated the activation of NLRP3 inflammasome in HFLS-RA,the expression of NLRP3 before and after baicalin treatment was observed by immunofluorescence.Western blot was used to detect the protein expression of p-PI3K,p-Akt,NF-κB p65,NLRP3,ASC and caspase-1 after baicalin treatment for 48 h,and the contents of IL-1 and IL-18 in the supernatents were detected by ELISA.In order to explore the mechanism of baicalin alleviating the activation of NLRP3 inflammasome,the corresponding relationship between let-7i-3p and PIK3CA was verified by double luciferin and Westen blot analysis.The expression of let-7i-3p and PI3K before and after baicalin intervention was detected by RT-qPCR.let-7i-3p interference was used to verify whether baicalin mitigated the activation of enhanced NLRP3 inflammasome.[Results]Baicalin(50 and 100 mg/L)significantly reduced the activation of NLRP3 inflammasome,inhibited the protein expressions of p-PI3K,p-Akt,NF-κB p65,NLRP3,ASC and caspase-1,and the secretion of IL-1 and IL-18.let-7i-3p and PIK3CA had a targeted correspondence,and baicalin up-regulated the expression of let-7i-3p and down-regulated the expression of PIK3CA.Baicalin attenuated the activation of NLRP3 inflammasome enhanced by let-7i-3p interference.[Conclusions]Baicalin can up-regulate let-7i-3p expression,inhibit PI3K/Akt/NF-κB signal transduction,and thus reduce the activation of NLRP3 inflammasome in HFLS-RA. 展开更多
关键词 BAICALIN Rheumatoid arthritis Human fibroblast like synoviocytes of rheumatoid arthritis NLRP3 inflammasome miRNA Dual-luciferase
下载PDF
RNA sequencing of exosomes secreted by fibroblast and Schwann cells elucidates mechanisms underlying peripheral nerve regeneration
16
作者 Xinyang Zhou Yehua Lv +8 位作者 Huimin Xie Yan Li Chang Liu Mengru Zheng Ronghua Wu Songlin Zhou Xiaosong Gu Jingjing Li Daguo Mi 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第8期1812-1821,共10页
Exosomes exhibit complex biological functions and mediate a variety of biological processes,such as promoting axonal regeneration and functional recove ry after injury.Long non-coding RNAs(IncRNAs)have been reported t... Exosomes exhibit complex biological functions and mediate a variety of biological processes,such as promoting axonal regeneration and functional recove ry after injury.Long non-coding RNAs(IncRNAs)have been reported to play a crucial role in axonal regeneration.Howeve r,the role of the IncRNA-microRNAmessenger RNA(mRNA)-competitive endogenous RNA(ceRNA)network in exosome-mediated axonal regeneration remains unclear.In this study,we performed RNA transcriptome sequencing analysis to assess mRNA expression patterns in exosomes produced by cultured fibroblasts(FC-EXOs)and Schwann cells(SCEXOs).Diffe rential gene expression analysis,Gene Ontology analysis,Kyoto Encyclopedia of Genes and Genomes analysis,and protein-protein intera ction network analysis were used to explo re the functions and related pathways of RNAs isolated from FC-EXOs and SC-EXOs.We found that the ribosome-related central gene Rps5 was enriched in FC-EXOs and SC-EXOs,which suggests that it may promote axonal regeneration.In addition,using the miRWalk and Starbase prediction databases,we constructed a regulatory network of ceRNAs targeting Rps5,including 27 microRNAs and five IncRNAs.The ceRNA regulatory network,which included Ftx and Miat,revealed that exsosome-derived Rps5 inhibits scar formation and promotes axonal regeneration and functional recovery after nerve injury.Our findings suggest that exosomes derived from fibro blast and Schwann cells could be used to treat injuries of peripheral nervous system. 展开更多
关键词 ceRNA network EXOSOMES fibroblast cells Gene Ontology(GO) Kyoto Encyclopedia of Genes and Genomes(KEGG) protein-protein interaction(PPI)networks RNA-seq Schwann cells
下载PDF
肿瘤相关成纤维细胞上调hsa-miR-18b-5p靶向FBXL3促进前列腺癌的增殖及转移
17
作者 骆金光 陶怀祥 +3 位作者 闻志远 陈龙 胡昊 关翰 《南方医科大学学报》 CAS CSCD 北大核心 2024年第7期1284-1296,共13页
目的探讨受肿瘤相关成纤维细胞(CAFs)调控的hsa-miR-18b-5p在前列腺癌(PCa)中的表达水平及作用,并研究对其在PCa发生发展过程中的分子机制。方法利用生物信息学技术分析在PCa中高表达的miRNA,构建肿瘤相关成纤维细胞并与PCa细胞系共培养... 目的探讨受肿瘤相关成纤维细胞(CAFs)调控的hsa-miR-18b-5p在前列腺癌(PCa)中的表达水平及作用,并研究对其在PCa发生发展过程中的分子机制。方法利用生物信息学技术分析在PCa中高表达的miRNA,构建肿瘤相关成纤维细胞并与PCa细胞系共培养,验证CAFs对PCa细胞增殖和迁移的影响及对hsa-miR-18b-5p的调控作用;RT-qPCR验证20例患者癌组织及癌旁正常组织、前列腺正常上皮增生细胞及PCa各细胞系中hsa-miR-18b-5p的表达水平;通过脂质体法将阴性对照及hsamiR-18b-5p抑制物分别转染入PCa细胞C4-2、LNCAP中,分为NC inhibitor组和hsa-miR-18b-5p inhibitor组;采用细胞集落形成、CCK-8实验、划痕愈合、Transwell、IC_(50)实验、流式细胞术分别检测C4-2、LNCAP细胞增殖、迁移、侵袭、耐药能力、凋亡和周期;建立PCa裸鼠移植瘤模型,定期测量移植瘤的质量和体积,Kaplan-Meier生存曲线分析裸鼠生存情况;利用靶基因预测分析网站(Targetscan、Mirtarbase、miRDB、miRDIP)预测has-miR-18b-5p的靶基因,并通过双荧光素酶报告基因分析验证hsa-miR-18b-5p与靶基因的靶向关系,RT-qPCR、Western blotting检测各组细胞靶基因的表达水平。结果生物信息学分析结果显示,在PCa中高表达的miRNA有17个,结合差异表达程度以及相关文献筛选出拟研究的基因:miR-148a、miR-17、miR-18b-5p、miR-770、miR-297-3p。CAFs与PCa细胞系共培养后hsa-miR-18b-5p的表达水平升高(P<0.01),且促进PCa细胞的增殖与迁移(P<0.01),敲除has-miR-18b-5p可抵消CAFs对PCa细胞增殖及迁移的影响,确定has-miR-18b-5p为研究基因。与正常前列腺上皮细胞或肿瘤旁组织相比,PCa细胞或肿瘤组织中hsa-miR-18b-5p的表达升高(P<0.05);敲除hsa-miR-18b-5p可抑制C4-2、LNCAP细胞的增殖、迁移、侵袭以及耐药(P<0.05);敲除hsa-miR-18b-5p可抑制裸鼠移植瘤质量和体积的增长,增加裸鼠的生存时间(P<0.05)。靶基因预测分析网站显示,FBXL3是hsa-miR-18b-5p的一个潜在作用靶点,双荧光素酶报告基因证实has-miR-18b-5p与FBXL3基因间存在结合位点,且敲除hsa-miR-18b-5p可增加C4-2、LNCAP细胞中FBXL3的蛋白表达(P<0.05)。结论CAFs上调前列腺癌细胞hsa-miR-18b-5p的表达水平,后者可能通过靶向调控FBXL3基因的表达促进PCa细胞的增殖和转移。 展开更多
关键词 hsa-miR-18b-5p 肿瘤相关成纤维细胞 fbXL3 前列腺癌 促癌
下载PDF
血清Nesfatin-1、IGFBP-3、FGF-21联合检测对特发性矮小症的诊断价值
18
作者 宋梅 刘瀚文 +2 位作者 王静娜 齐瑞芳 李荣敏 《标记免疫分析与临床》 CAS 2024年第4期658-665,共8页
目的探究血清摄食抑制因子(Nesfatin-1)、类胰岛素生长因子结合蛋白3(IGFBP-3)、成纤维细胞生长因子21(FGF-21)联合检测对特发性矮小症(ISS)的诊断价值。方法本研究选取2022年6月至2023年6月期间在本院诊治的85例ISS患儿记为ISS组,另选7... 目的探究血清摄食抑制因子(Nesfatin-1)、类胰岛素生长因子结合蛋白3(IGFBP-3)、成纤维细胞生长因子21(FGF-21)联合检测对特发性矮小症(ISS)的诊断价值。方法本研究选取2022年6月至2023年6月期间在本院诊治的85例ISS患儿记为ISS组,另选74例在本院体检的儿童记为对照组,记录两组儿童一般资料并进行比较分析。酶联免疫吸附实验(ELISA)检测受试者血清Nesfatin-1、IGFBP-3、FGF-21;使用原子吸收光谱仪测定受试者血清营养元素钙(Ca)、镁(Mg)、铜(Cu)、铁(Fe)、锌(Zn)的水平。X线骨密度仪检查受试者骨龄(BA)。Pearson相关性分析ISS患儿血清Nesfatin-1、IGFBP-3、FGF-21水平的相关性;多因素Logistic回归分析影响儿童发生ISS的影响因素;受试者工作特征(ROC)曲线分析Nesfatin-1、IGFBP-3、FGF-21水平对ISS的诊断价值;通过Z检验比较曲线下面积(AUC)的差异。结果与对照组相比,ISS组BA、身高、体重、BMI以及IGFBP-3、FGF-21水平较低,Nesfatin-1水平、性发育状态I级人数较高(P<0.05);ISS组患儿Nesfatin-1与IGFBP-3、FGF-21水平呈负相关(r_(Nesfatin-1 vs IGFBP-3)=-0.469,r_(Nesfatin-1 vs FGF-21)=-0.483),IGFBP-3与FGF-21水平呈正相关(r_(IGFBP-3 vs FGF-21)=0.456)(P<0.05);BA、性发育状态、IGFBP-3、FGF-21是儿童发生ISS的独立保护因素,而Nesfatin-1是儿童发生ISS的独立危险因素(P<0.05);Nesfatin-1、IGFBP-3、FGF-21单独诊断ISS的AUC分别为0.831、0.836、0.823,3者联合诊断ISS的AUC为0.928,优于单独及两两联合诊断(P<0.05)。结论ISS患儿血清中Nesfatin-1水平较高,IGFBP-3、FGF-21水平较低,3者是儿童发生ISS的影响因素,联合诊断ISS具有较高价值。 展开更多
关键词 特发性矮小症 摄食抑制因子 类胰岛素生长因子结合蛋白3 成纤维细胞生长因子21 诊断价值
下载PDF
基于QFD-Kano与FBS的产科等待座椅设计研究 被引量:6
19
作者 章彰 张琳 丁伟 《家具与室内装饰》 北大核心 2023年第1期38-43,共6页
为减缓孕妇在医院等待产检过程的焦虑,客观理性地将孕妇对于等待区座椅的需求转化为产品的设计特性,提升孕妇产检过程以及整个围生期的用户体验。本研究首先进行用户访谈和文献查询获取孕妇对于等待空间座椅的需求,采用Kano模型分析各... 为减缓孕妇在医院等待产检过程的焦虑,客观理性地将孕妇对于等待区座椅的需求转化为产品的设计特性,提升孕妇产检过程以及整个围生期的用户体验。本研究首先进行用户访谈和文献查询获取孕妇对于等待空间座椅的需求,采用Kano模型分析各需求类型;其次,运用QFD矩阵将孕妇的需求转化为座椅的设计需求并得出各项设计需求的权重;最后,将关键的设计需求引入FBS模型,推导出座椅的结构化信息,得到等待空间座椅的设计。通过QFD-Kano与FBS模型的综合运用,对产科等待空间座椅的材质、造型、隐私、舒适性等方面的不足提出相应的解决方案,座椅的结构与设计需求相匹配,整个设计流程科学规范。同时验证了QFD-Kano与FBS融合运用的可能性。 展开更多
关键词 座椅设计 产科 等待空间 QFD-Kano fbS 孕妇
下载PDF
结合Kano-QFD与FBS模型的露营椅创新设计方法研究 被引量:2
20
作者 叶俊男 姚梦雨 杨超翔 《家具与室内装饰》 北大核心 2023年第7期11-15,共5页
针对露营椅开发设计主要依赖生产企业和设计师的主观判断、设计方案与用户需求匹配度低、缺少科学量化的设计要素获取方法等问题,结合Kano-QFD与FBS模型,探索针对露营椅的创新设计方法。首先,通过用户访谈和调查问卷获取露营椅的初始用... 针对露营椅开发设计主要依赖生产企业和设计师的主观判断、设计方案与用户需求匹配度低、缺少科学量化的设计要素获取方法等问题,结合Kano-QFD与FBS模型,探索针对露营椅的创新设计方法。首先,通过用户访谈和调查问卷获取露营椅的初始用户需求,利用Kano模型得到用户需求类别及重要度;其次,基于QFD理论对用户需求进行量化分析,获取露营椅各项设计要求及权重;最后,将获得的关键设计要求导入FBS模型,完成露营椅功能要素到结构要素的映射转化,最终实现露营椅的创新设计。实践证明,结合Kano-QFD和FBS模型,能全面获取及分析用户需求,输出露营椅的具体解决方案,实现了用户需求到产品设计要素的精准映射,为展开露营椅创新设计提供一条新路径。 展开更多
关键词 露营椅 Kano-QFD模型 fbS模型 创新设计
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部