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Resident immune responses to spinal cord injury:role of astrocytes and microglia 被引量:8
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作者 Sydney Brockie Cindy Zhou Michael G.Fehlings 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第8期1678-1685,共8页
Spinal cord injury can be traumatic or non-traumatic in origin,with the latter rising in incidence and prevalence with the aging demographics of our society.Moreove r,as the global population ages,individuals with co-... Spinal cord injury can be traumatic or non-traumatic in origin,with the latter rising in incidence and prevalence with the aging demographics of our society.Moreove r,as the global population ages,individuals with co-existent degenerative spinal pathology comprise a growing number of traumatic spinal cord injury cases,especially involving the cervical spinal cord.This makes recovery and treatment approaches particula rly challenging as age and comorbidities may limit regenerative capacity.For these reasons,it is critical to better understand the complex milieu of spinal cord injury lesion pathobiology and the ensuing inflammatory response.This review discusses microglia-specific purinergic and cytokine signaling pathways,as well as microglial modulation of synaptic stability and plasticity after injury.Further,we evaluate the role of astrocytes in neurotransmission and calcium signaling,as well as their border-forming response to neural lesions.Both the inflammatory and reparative roles of these cells have eluded our complete understanding and remain key therapeutic targets due to their extensive structural and functional roles in the nervous system.Recent advances have shed light on the roles of glia in neurotransmission and reparative injury responses that will change how interventions are directed.Understanding key processes and existing knowledge gaps will allow future research to effectively target these cells and harness their regenerative potential. 展开更多
关键词 ASTROCYTES glial signaling MICROGLIA spinal cord injury synaptic transmission
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Factors affecting sexual health in individuals with spinal cord injury:A systematic scoping review
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作者 Azam Rahmani Ataollah Shahbandi +10 位作者 Shahryar Ghashghaie Zahra Ghodsi Zahra Khazaeipour Mahkameh Abbaszadeh Mohammad Amin Dabbagh Ohadi Seyed Aria Nejadghaderi Rasha Atlasi Raziyeh Maasoumi Elaheh Khodadoust Alex R.Vaccaro Vafa Rahimi-Movaghar 《Chinese Journal of Traumatology》 2025年第3期193-200,共8页
Purpose:This study aims to review the literature to explore some factors affecting sexual and partnership adjustment in individuals with spinal cord injury(SCI).Methods:This study was based on the methodological frame... Purpose:This study aims to review the literature to explore some factors affecting sexual and partnership adjustment in individuals with spinal cord injury(SCI).Methods:This study was based on the methodological framework of scoping reviews,including 3 methodological steps:(1)identifying relevant studies(searching for related studies);(2)selecting related studies;(3)collecting key findings,summarizing,and reporting the results.The electronic databases were searched including Medline(PubMed),Scopus,Web of Science,Embase,and Cochrane Library.Studies were included if they reported data about the related factors of sexual and partnership adjustment in individuals with SCI.No limitations were considered in terms of time or methodology of the search.Results:After the full-text screening,52 studies were included from the year of 1978-2019 with various methodologies.The present review demonstrated that proper sexual health among individuals with SCI is related to several factors including the anatomical factor,level of the injury,completeness of the injury,psycho-social factor,socio-economic status,and type of relationship.Conclusion:With consideration of factors affecting sexual and partnership adjustment in individuals with SCI,a better estimation of sexual health can be achieved in clinical to improve the relationship and quality of life. 展开更多
关键词 Sexual adjustment Partnership adjustment Spinal cord injuries Scoping review
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周期性压力下椎间盘细胞中肌动蛋白的变化及其意义 被引量:4
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作者 于胜吉 邱贵兴 +3 位作者 Yang BL Roth S Whyne C Yee AJ 《中华骨科杂志》 CAS CSCD 北大核心 2005年第9期52-56,共5页
目的探讨在周期性压力下,体外培养的椎间盘细胞中的肌动蛋白的变化及其意义。方法采用10只5~6周龄、体重为25~30kg的猪的椎间盘进行体外细胞的分离和培养,对细胞施加周期性液压,通过对细胞的形态学观察及Western免疫印迹和免疫荧光实... 目的探讨在周期性压力下,体外培养的椎间盘细胞中的肌动蛋白的变化及其意义。方法采用10只5~6周龄、体重为25~30kg的猪的椎间盘进行体外细胞的分离和培养,对细胞施加周期性液压,通过对细胞的形态学观察及Western免疫印迹和免疫荧光实验,检测在周期性压力下椎间盘细胞中的肌动蛋白的变化。结果纤维环细胞和髓核细胞经1MPa、1Hz,持续每天3h加压,3d后髓核细胞的存活率大于90%,纤维环细胞的存活率大于85%,加压后的纤维环细胞和髓核细胞体积均缩小,由多角形转变为细长形。Western免疫印迹结果显示,肌动蛋白在纤维环细胞和髓核细胞中的表达均明显减少,以髓核细胞为著。免疫荧光结果显示,肌动蛋白由正常纤维环细胞和髓核细胞内的疏松排列转变为受压细胞内的紧密排列,髓核细胞的体积明显缩小,其中的肌动蛋白在细胞膜周围紧密排列。结论体外培养的单层椎间盘细胞在受力状态下,肌动蛋白的表达减少,细胞的体积缩小,并且肌动蛋白在细胞内重排列。这可能是激发细胞内或细胞表面信号传导的重要机制。 展开更多
关键词 肌动蛋白类 椎间盘 细胞
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机械负荷调节猪腰椎间盘细胞表达α5β1整合素的体外研究 被引量:2
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作者 于胜吉 邱贵兴 +3 位作者 Yang B Roth S Whyne C Yee AJ 《中华骨科杂志》 CAS CSCD 北大核心 2006年第6期415-420,共6页
目的研究α5β1整合素在体外培养的猪腰椎间盘细胞中的表达和机械负荷对其的影响。方法取10只年龄5~6周、体重25~30kg的猪,处死后12h内,无菌条件下切取完整的腰椎,剔除腰椎周围的韧带和软组织,尤其是椎间盘周围的韧带。从腹侧一次性... 目的研究α5β1整合素在体外培养的猪腰椎间盘细胞中的表达和机械负荷对其的影响。方法取10只年龄5~6周、体重25~30kg的猪,处死后12h内,无菌条件下切取完整的腰椎,剔除腰椎周围的韧带和软组织,尤其是椎间盘周围的韧带。从腹侧一次性切开椎间盘取出髓核(nucleuspulpous,NP),仔细分离纤维环(anulusfibrous,AF),将两者立即置于Hanks平衡盐溶液中,制成细胞悬液。分别对腰椎间盘的AF和NP细胞施加1MPa、1Hz,3h/d,共3d的周期性液压,通过对细胞的形态学观察、Western免疫印迹和免疫组织化学染色,检测α5β1整合素在正常腰椎间盘AF细胞和NP细胞中的表达及周期性压力对其的影响。结果经周期性液压后,NP细胞的存活率大于90%,AF细胞的存活率大于85%,加压后的AF细胞和NP细胞均可见体积缩小。α5β1整合素在正常腰椎间盘AF细胞和NP细胞中的表达呈强阳性。Western免疫印迹结果显示:加压后α5β1整合素在AF细胞中的表达均明显减少,P值分别为0.000、0.003,与对照组比较差异有统计学意义;α5β1整合素在NP细胞中的表达也明显减少,P值分别为0.001、0.015,与对照组比较差异有统计学意义。结论机械负荷可引起腰椎间盘细胞中α5β1整合素的变化,提示α5β1整合素在腰椎间盘细胞中可能发挥力学传感器的作用。 展开更多
关键词 整合素Α5Β1 椎间盘 动力传导 细胞
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周期性压力作用下椎间盘细胞中整合素α_3的表达 被引量:1
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作者 于胜吉 孙秀芳 +4 位作者 邱贵兴 Yang B Roth S Whyne C Yee AJ 《中华物理医学与康复杂志》 CAS CSCD 北大核心 2005年第4期209-213,共5页
目的 探讨整合素在体外培养的椎间盘细胞力学传导中的作用。方法 采用猪的椎间盘进行体外细胞的分离和培养,对细胞施加周期性液压负荷, 通过对细胞的形态学观察、Western免疫印迹、免疫细胞化学染色和免疫荧光,分别检测整合素α3 和... 目的 探讨整合素在体外培养的椎间盘细胞力学传导中的作用。方法 采用猪的椎间盘进行体外细胞的分离和培养,对细胞施加周期性液压负荷, 通过对细胞的形态学观察、Western免疫印迹、免疫细胞化学染色和免疫荧光,分别检测整合素α3 和肌动蛋白在周期性压力下椎间盘细胞中的表达。结果 经加压后,纤维环细胞和髓核细胞均可见体积缩小,由多角形转变为细长形,α3 和肌动蛋白在AF和NP细胞中的表达均明显减少。结论 压力抑制了整合素α3 的产生,整合素α3 将力的信号转换到细胞内时, 进一步影响到与其关系密切的肌动蛋白。 展开更多
关键词 整合素Α3 椎间盘细胞 周期性 压力作用 免疫细胞化学染色 Western 肌动蛋白 分离和培养 形态学观察 力学传导 体外培养 体外细胞 免疫印迹 免疫荧光 体积缩小 髓核细胞 信号转换 性压力 纤维环 P细胞 细胞内
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Pressure ulcers and acute risk factors in individuals with traumatic spinal fractures with or without spinal cord injuries:A prospective analysis of the National Spinal Column/Cord Injury Registry of Iran(NSCIR-IR)data 被引量:2
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作者 Farzin Farahbakhsh Hossein Rezaei Aliabadi +5 位作者 Vali Baigi Zahra Ghodsi Mohammad Dashtkoohi Ahmad Pour-Rashid James SHarrop Vafa Rahimi-Movaghar 《Chinese Journal of Traumatology》 CAS CSCD 2023年第4期193-198,共6页
Purpose:To identify risk factors for developing pressure ulcers(PUs)in the acute care period of traumatic spinal fracture patients with or without spinal cord injuries(SCIs).Methods:Data were collected prospectively i... Purpose:To identify risk factors for developing pressure ulcers(PUs)in the acute care period of traumatic spinal fracture patients with or without spinal cord injuries(SCIs).Methods:Data were collected prospectively in participating the National Spinal column/Cord Injury Registry of Iran(NSCIR-IR)from individuals with traumatic spinal fractures with or without SCIs,in-clusive of the hospital stay from admission to discharge.Trained nursing staff examined the patients for the presence of PUs every 8 h during their hospital stay.The presence and grade of PUs were assessed according to the European Pressure Ulcer Advisory Panel classification.In addition to PU,following data were also extracted from the NSCIR-IR datasets during the period of 2015-2021:age,sex,Glasgow coma scale score at admission,having SCIs,marital status,surgery for a spinal fracture,American Spinal Injury Association impairment scale(AIS),urinary incontinence,level of education,admitted center,length of stay in the intensive care unit(ICU),hypertension,respiratory diseases,consumption of ciga-rettes,diabetes mellitus and length of stay in the hospital.Logistic regression models were used to es-timate the unadjusted and adjusted odds ratio(OR)with 95%confidence intervals(CI).Results:Altogether 2785 participants with traumatic spinal fractures were included.Among them,87(3.1%)developed PU during their hospital stay and 392(14.1%)had SCIs.In the SCI population,63(16.1%)developed PU during hospital stay.Univariate logistic regression for the whole sample showed that marital status,having SCIs,urinary incontinence,level of education,treating center,number of days in the ICU,age,and Glasgow coma scale score were significant predictors for PUs.However,further analysis by multiple logistic regression only revealed the significant risk factors to be the treating center,marital status,having SCIs,and the number of days in the ICU.For the subgroup of individuals with SCIs,marital status,AIS,urinary incontinence,level of education,the treating center,the number of days in the ICU and the number of days in the hospital were significant predictors for PUs by univariate analysis.After adjustment in the multivariate model,the treating center,marital status(singles vs.marrieds,OR=3.06,95%CI:1.55-6.03,p=0.001),and number of days in the ICU(OR=1.06,95%Cl:1.04-1.09,p<0.001)maintained significance.Conclusions:These data confirm that individuals with traumatic spinal fractures and SCIs,especially single young patients who suffer from urinary incontinence,grades A-D by AIS,prolonged ICU stay,and more extended hospitalization are at increased risk for PUs;as a result strategies to minimize PU development need further refinement. 展开更多
关键词 Spinal fractures Spinal cord injuries Pressureulcer NSCIR-IR
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Reasons for delayed spinal cord decompression in individuals with traumatic spinal cord injuries in Iran:A qualitative study from the perspective of neurosurgeons
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作者 Masoud SohrabiAsl Zahra Ghodsi +9 位作者 Roya Habibi Arejan Zahra Azadmanjir Mahdi Sharif-Alhoseini Moein Khormali Maryam Shojaei Abbas Rahimiforoushani Alireza Khoshnevisan Alexander R.Vaccaro Michael G.Fehlings Vafa Rahimi-Movaghar 《Chinese Journal of Traumatology》 CAS CSCD 2021年第6期356-359,共4页
Purpose:The median time from the event leading to the spinal cord injury(SCI)to the time of decompressive surgery is estimated to be 6.9 days in Iran,which is much longer than the proposed ideal time(less than 24 h)in... Purpose:The median time from the event leading to the spinal cord injury(SCI)to the time of decompressive surgery is estimated to be 6.9 days in Iran,which is much longer than the proposed ideal time(less than 24 h)in published guidelines.The current qualitative study aimed to determine the reasons for the observed decompression surgery delay in Iran from the perspective of neurosurgeons.Methods:This qualitative study is designed to perform content analysis on the gathered data from face-to-face semi-structured interviews with 12 Iranian neurosurgeons.Results:The findings of the current study suggest that patient-related factors constitute more than half of the codes extracted from the interviews.Overall,the type of injury,presence of polytrauma,and surgeons’’wrong attitude are the main factors causing delayed spinal cord decompression in Iranian patients from the perspective of neurosurgeons.Other notable factors include delay in transferring patients to the trauma center,delay in availability of necessary equipment,and scarce medical personnel.Conclusion:In the perspective of neurosurgeons,the type of injury,presence of polytrauma,and surgeons’’wrong attitude are the leading reasons for delayed decompressive surgery of individuals with SCI in Iran. 展开更多
关键词 Spinal cord injuries DECOMPRESSION SURGICAL Neurosurgeons Iran Qualitative research
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