SMARTDRV是一个MICROSOFT DOS 5.0以上版本中的实用工具,即磁盘高速缓存程序,它在DOS6.0公布以后得到了非常广泛的应用。 高速缓存(WRITE-CATCH)实质上是一块内存,存放一些磁盘的数据信息,每当需要读取磁盘数据时,CPU便会先到高速缓存去...SMARTDRV是一个MICROSOFT DOS 5.0以上版本中的实用工具,即磁盘高速缓存程序,它在DOS6.0公布以后得到了非常广泛的应用。 高速缓存(WRITE-CATCH)实质上是一块内存,存放一些磁盘的数据信息,每当需要读取磁盘数据时,CPU便会先到高速缓存去找,如果找到了,便直接由高速缓存读取,不必进行磁盘I/O的动作,所以速度非常快,深受计算机工作者青睐。下面从几个实用的角度分析其功能。 一、DOS中的应用 DOS6.X的SMARTDRV.EXE更进一步地提供写入高速缓存的功能。当需要将数据写入磁盘时。展开更多
目的观察电针联合悬吊训练(sling exercise therapy,SET)治疗慢性非特异性下腰痛(chronic nonspecific low back pain,CNLBP)的临床疗效。方法将72例CNLBP患者随机分为观察组和对照组,每组36例。对照组行SET治疗,观察组在对照组基础上...目的观察电针联合悬吊训练(sling exercise therapy,SET)治疗慢性非特异性下腰痛(chronic nonspecific low back pain,CNLBP)的临床疗效。方法将72例CNLBP患者随机分为观察组和对照组,每组36例。对照组行SET治疗,观察组在对照组基础上采用电针腰夹脊穴治疗。观察两组治疗前后视觉模拟评分法(visual analog scale,VAS)、腰椎功能障碍指数(oswestry disability index,ODI)、日本骨科协会(Japanese Orthopaedc Association,JOA)评分的变化,并比较两组治疗前后竖脊肌、多裂肌表面肌电图(surface electromyography,sEMG)中的指标均方根值(root mean square,RMS)和中位频率值(median frequency value,MF)。结果两组治疗2周后VAS、ODI评分低于治疗前,治疗后VAS、ODI评分低于治疗2周后和治疗前,差异有统计学意义(P<0.05);观察组治疗2周后和治疗后VAS、ODI评分低于对照组,差异有统计学意义(P<0.05)。两组治疗2周后JOA评分高于治疗前,治疗后JOA评分高于治疗2周后和治疗前,差异有统计学意义(P<0.05);观察组治疗2周后和治疗后JOA评分高于对照组,差异有统计学意义(P<0.05)。对照组竖脊肌、多裂肌双侧RMS值治疗2周后与治疗前比较,差异无统计学意义(P>0.05);治疗后竖脊肌、多裂肌双侧RMS值高于治疗2周后和治疗前,差异有统计学意义(P<0.05);观察组治疗2周后竖脊肌、多裂肌双侧RMS值高于治疗前,治疗后竖脊肌、多裂肌双侧RMS值高于治疗2周后和治疗前,差异有统计学意义(P<0.05);观察组治疗2周后、治疗后竖脊肌和多裂肌双侧RMS值高于对照组,差异有统计学意义(P<0.05)。两组治疗2周后竖脊肌、多裂肌双侧MF值高于治疗前,治疗后竖脊肌、多裂肌双侧MF值高于治疗2周后和治疗前,差异有统计学意义(P<0.05);观察组治疗2周后和治疗后竖脊肌、多裂肌双侧MF值高于对照组,差异有统计学意义(P<0.05)。结论电针联合SET训练能更好地减轻患者疼痛,改善椎旁核心肌(多裂肌、竖脊肌)的肌电信号,促进腰椎核心肌群功能恢复。展开更多
Biodiversity constitutes the fundamental cornerstone of ecosystem stability and resilience,furnishing indispensable services that encompass food production,the provision of clean water,climate regulation and the contr...Biodiversity constitutes the fundamental cornerstone of ecosystem stability and resilience,furnishing indispensable services that encompass food production,the provision of clean water,climate regulation and the control of disease.Nonetheless,the planet is currently experiencing an unprecedented biodiversity crisis.展开更多
Successful ex situ conservation of plant populations requires a high degree of genetic representativeness.However,spatially biased sampling in ex situ conservation efforts may fail to capture all wild genetic clusters...Successful ex situ conservation of plant populations requires a high degree of genetic representativeness.However,spatially biased sampling in ex situ conservation efforts may fail to capture all wild genetic clusters for species with range-wide genetic structure.To investigate the extent of spatially biased sampling in living collections and the coverage of wild genetic clusters in plant populations under ex situ conservation worldwide,we combined a global synthesis of ex situ conservation efforts with a case study of an endangered riparian plant species,Myricaria laxiflora.Our analysis of ex situ conservation worldwide revealed that the majority(82.6%)of ex situ populations fail to cover all wild genetic clusters,largely due to spatially biased sampling with low geographic coverage.Our case study of M.laxiflora showed that genetic diversity differed between the ex situ and upstream populations,while it was comparable between ex situ populations and other wild populations.However,current ex situ populations did not cover all wild genetic clusters,as the upstream genetic cluster was previously uncollected.Our study suggests that the failure to cover all wild genetic clusters in ex situ populations is a widespread issue,and ex situ populations with high genetic diversity can also fail to cover all wild genetic clusters.In future ex situ conservation programs,both the importance of high genetic diversity and the high coverage of wild genetic clusters should be prioritized.展开更多
Background:Ex vivo lung perfusion(EVLP)has emerged as a critical technique for lung preservation and evaluation prior to transplantation.While conventional rat EVLP systems utilize closed-loop dual cannulation of pulm...Background:Ex vivo lung perfusion(EVLP)has emerged as a critical technique for lung preservation and evaluation prior to transplantation.While conventional rat EVLP systems utilize closed-loop dual cannulation of pulmonary artery(PA)and vein,the effect of the simplified model using single PA cannulation with passive venous drainage is unknown.Methods:We developed two EVLP models in rats:a semi-closed circuit with PA-only cannulation and left atrial incision for passive venous drainage(SC-EVLP),and a closed circuit employing both arterial and venous cannulation(C-EVLP).Donor lungs were perfused for a defined duration and subsequently orthotopically transplanted.We evaluated pulmonary function parameters,histopathological injury scores,inflammatory cytokine levels,and apoptotic marker expression at the end of perfusion and posttransplantation.Results:Compared to the conventional EVLP,the SC-EVLP group exhibited significantly lower PA pressure and improved dynamic lung compliance throughout perfusion.Although the levels of tumor necrosis factor-αin the perfusate were higher in the SC-EVLP group,other cytokine levels in the perfusate and bronchoalveolar lavage fluid exhibited no significant differences.Pulmonary edema was reduced in the SC-EVLP group,as indicated by a lower lung wet-to-dry ratio.After transplantation,lungs from the SC-EVLP group exhibited lower histological injury scores,reduced apoptosis,and decreased serum cytokine levels,suggesting attenuated inflammation and tissue damage.Conclusions:In a rat model,single PA cannulation with passive venous drainage reduced pulmonary edema during EVLP and reduced lung injury and systemic inflammation after transplantation.展开更多
Objective The basic helix-loop-helix(bHLH)transcription factors(TFs)are pivotal in regulating fungal growth,development,and secondary metabolism.However,the knowledge about the Ganoderma lucidum bHLHs(GlbHLHs)in ganod...Objective The basic helix-loop-helix(bHLH)transcription factors(TFs)are pivotal in regulating fungal growth,development,and secondary metabolism.However,the knowledge about the Ganoderma lucidum bHLHs(GlbHLHs)in ganoderic acid(GA)biosynthesis of G.lucidum was limited.This study aimed to explore the functions of bHLH genes in ganoderic acid biosynthesis during G.lucidum growth development.Methods First,the genome-wide identification of GlbHLHs was performed through Hidden Markov model searches and Two-way blast.Furthermore,through physicochemical properties,gene structure,and phylogenetic analysis,as well as combining the transcriptome and metabolome data from different developmental stages of G.lucidum,candidate GlbHLHs were screened.Subsequently,their regulatory roles in ganoderic acid biosynthesis were explored using yeast one-hybrid and dual-luciferase reporter assays.Results A total of 11 GlbHLH members were characterized in G.lucidum.The upstream promoter regions of these genes enriched hormones and abiotic stress responsive elements.Although individual ganoderic acid monomers demonstrated marked differences in accumulation patterns across specific growth phases and tissue types,overall,the total GA content was consistently higher in caps than in stipes throughout development.In addition,all GlbHLHs exhibited high expression in whole G.lucidum from the primordium to maturation stages.Among them,GlbHLH5 and GlbHLH7 showed the highest expression in any stage and highly correlated with key genes associated with GA pathway.Functional validation through dual-luciferase assays and yeast one-hybrid experiments had demonstrated that GlbHLH5 activated the P2 region of the lanosterol synthase promoter,while GlbHLH7 activated the promoters of squalene epoxidase and squalene synthase.Conclusion Compared to plants,G.lucidum harbored a small number of bHLH members but all high expression in any stages.Additionally,GlbHLH5 and GlbHLH7 with the highest expression among GlbHLHs showed activation in regulating the biosynthesis of GA.These results provide a theoretical reference for further research on ganoderic acid regulation in G.lucidum,and thereby providing a molecular foundation for enhancing ganoderic acid yield to optimize the medicinal value of G.lucidum.展开更多
文摘目的观察电针联合悬吊训练(sling exercise therapy,SET)治疗慢性非特异性下腰痛(chronic nonspecific low back pain,CNLBP)的临床疗效。方法将72例CNLBP患者随机分为观察组和对照组,每组36例。对照组行SET治疗,观察组在对照组基础上采用电针腰夹脊穴治疗。观察两组治疗前后视觉模拟评分法(visual analog scale,VAS)、腰椎功能障碍指数(oswestry disability index,ODI)、日本骨科协会(Japanese Orthopaedc Association,JOA)评分的变化,并比较两组治疗前后竖脊肌、多裂肌表面肌电图(surface electromyography,sEMG)中的指标均方根值(root mean square,RMS)和中位频率值(median frequency value,MF)。结果两组治疗2周后VAS、ODI评分低于治疗前,治疗后VAS、ODI评分低于治疗2周后和治疗前,差异有统计学意义(P<0.05);观察组治疗2周后和治疗后VAS、ODI评分低于对照组,差异有统计学意义(P<0.05)。两组治疗2周后JOA评分高于治疗前,治疗后JOA评分高于治疗2周后和治疗前,差异有统计学意义(P<0.05);观察组治疗2周后和治疗后JOA评分高于对照组,差异有统计学意义(P<0.05)。对照组竖脊肌、多裂肌双侧RMS值治疗2周后与治疗前比较,差异无统计学意义(P>0.05);治疗后竖脊肌、多裂肌双侧RMS值高于治疗2周后和治疗前,差异有统计学意义(P<0.05);观察组治疗2周后竖脊肌、多裂肌双侧RMS值高于治疗前,治疗后竖脊肌、多裂肌双侧RMS值高于治疗2周后和治疗前,差异有统计学意义(P<0.05);观察组治疗2周后、治疗后竖脊肌和多裂肌双侧RMS值高于对照组,差异有统计学意义(P<0.05)。两组治疗2周后竖脊肌、多裂肌双侧MF值高于治疗前,治疗后竖脊肌、多裂肌双侧MF值高于治疗2周后和治疗前,差异有统计学意义(P<0.05);观察组治疗2周后和治疗后竖脊肌、多裂肌双侧MF值高于对照组,差异有统计学意义(P<0.05)。结论电针联合SET训练能更好地减轻患者疼痛,改善椎旁核心肌(多裂肌、竖脊肌)的肌电信号,促进腰椎核心肌群功能恢复。
基金supported by the Guangdong Basic and Applied Basic Research Foundation-Special Program on Biodiversity(2023B0303050001).
文摘Biodiversity constitutes the fundamental cornerstone of ecosystem stability and resilience,furnishing indispensable services that encompass food production,the provision of clean water,climate regulation and the control of disease.Nonetheless,the planet is currently experiencing an unprecedented biodiversity crisis.
基金supported by National Key Research and Development Program of China(2024YFF1307400)Hubei Provincial Natural Science Foundation and Three Gorges Innovation Development Joint Fund(Grant No.2023AFD195)China Three Gorges Corporation(NBZZ202300130).
文摘Successful ex situ conservation of plant populations requires a high degree of genetic representativeness.However,spatially biased sampling in ex situ conservation efforts may fail to capture all wild genetic clusters for species with range-wide genetic structure.To investigate the extent of spatially biased sampling in living collections and the coverage of wild genetic clusters in plant populations under ex situ conservation worldwide,we combined a global synthesis of ex situ conservation efforts with a case study of an endangered riparian plant species,Myricaria laxiflora.Our analysis of ex situ conservation worldwide revealed that the majority(82.6%)of ex situ populations fail to cover all wild genetic clusters,largely due to spatially biased sampling with low geographic coverage.Our case study of M.laxiflora showed that genetic diversity differed between the ex situ and upstream populations,while it was comparable between ex situ populations and other wild populations.However,current ex situ populations did not cover all wild genetic clusters,as the upstream genetic cluster was previously uncollected.Our study suggests that the failure to cover all wild genetic clusters in ex situ populations is a widespread issue,and ex situ populations with high genetic diversity can also fail to cover all wild genetic clusters.In future ex situ conservation programs,both the importance of high genetic diversity and the high coverage of wild genetic clusters should be prioritized.
基金Key Science and Technology Program of Shaanxi Province,Grant/Award Number:2024SF2-GJHX-45National Natural Science Foundation of China,Grant/Award Number:82472191The Natural Science Foundation of Shaanxi Province,Grant/Award Number:2024JC-ZDXM-49。
文摘Background:Ex vivo lung perfusion(EVLP)has emerged as a critical technique for lung preservation and evaluation prior to transplantation.While conventional rat EVLP systems utilize closed-loop dual cannulation of pulmonary artery(PA)and vein,the effect of the simplified model using single PA cannulation with passive venous drainage is unknown.Methods:We developed two EVLP models in rats:a semi-closed circuit with PA-only cannulation and left atrial incision for passive venous drainage(SC-EVLP),and a closed circuit employing both arterial and venous cannulation(C-EVLP).Donor lungs were perfused for a defined duration and subsequently orthotopically transplanted.We evaluated pulmonary function parameters,histopathological injury scores,inflammatory cytokine levels,and apoptotic marker expression at the end of perfusion and posttransplantation.Results:Compared to the conventional EVLP,the SC-EVLP group exhibited significantly lower PA pressure and improved dynamic lung compliance throughout perfusion.Although the levels of tumor necrosis factor-αin the perfusate were higher in the SC-EVLP group,other cytokine levels in the perfusate and bronchoalveolar lavage fluid exhibited no significant differences.Pulmonary edema was reduced in the SC-EVLP group,as indicated by a lower lung wet-to-dry ratio.After transplantation,lungs from the SC-EVLP group exhibited lower histological injury scores,reduced apoptosis,and decreased serum cytokine levels,suggesting attenuated inflammation and tissue damage.Conclusions:In a rat model,single PA cannulation with passive venous drainage reduced pulmonary edema during EVLP and reduced lung injury and systemic inflammation after transplantation.
基金funding from the Scientific and Technological Innovation Project of China Academy of Chinese Medical Sciences(No.CI2021A04008)National Key Research and Development Project(No.2023YFC3504104)+2 种基金Hangzhou Joint Fund of the Zhejiang Provincial Natural Science Foundation of China(No.LHZSZ24H280003)Technology Major Program on Agricultural New Variety Breeding(No.2021C02073)Central Guiding Local Science and Technology Development Fund Project(No.2024ZY01009).
文摘Objective The basic helix-loop-helix(bHLH)transcription factors(TFs)are pivotal in regulating fungal growth,development,and secondary metabolism.However,the knowledge about the Ganoderma lucidum bHLHs(GlbHLHs)in ganoderic acid(GA)biosynthesis of G.lucidum was limited.This study aimed to explore the functions of bHLH genes in ganoderic acid biosynthesis during G.lucidum growth development.Methods First,the genome-wide identification of GlbHLHs was performed through Hidden Markov model searches and Two-way blast.Furthermore,through physicochemical properties,gene structure,and phylogenetic analysis,as well as combining the transcriptome and metabolome data from different developmental stages of G.lucidum,candidate GlbHLHs were screened.Subsequently,their regulatory roles in ganoderic acid biosynthesis were explored using yeast one-hybrid and dual-luciferase reporter assays.Results A total of 11 GlbHLH members were characterized in G.lucidum.The upstream promoter regions of these genes enriched hormones and abiotic stress responsive elements.Although individual ganoderic acid monomers demonstrated marked differences in accumulation patterns across specific growth phases and tissue types,overall,the total GA content was consistently higher in caps than in stipes throughout development.In addition,all GlbHLHs exhibited high expression in whole G.lucidum from the primordium to maturation stages.Among them,GlbHLH5 and GlbHLH7 showed the highest expression in any stage and highly correlated with key genes associated with GA pathway.Functional validation through dual-luciferase assays and yeast one-hybrid experiments had demonstrated that GlbHLH5 activated the P2 region of the lanosterol synthase promoter,while GlbHLH7 activated the promoters of squalene epoxidase and squalene synthase.Conclusion Compared to plants,G.lucidum harbored a small number of bHLH members but all high expression in any stages.Additionally,GlbHLH5 and GlbHLH7 with the highest expression among GlbHLHs showed activation in regulating the biosynthesis of GA.These results provide a theoretical reference for further research on ganoderic acid regulation in G.lucidum,and thereby providing a molecular foundation for enhancing ganoderic acid yield to optimize the medicinal value of G.lucidum.
