Quantitative observation by enzyme cytochemistry of human rectal adenocarcinoma cells killed by LAK cells

Activity of succinic dehydrogenase(SDH)and acid phosphatase(AcPase)of effector-target cells during the process of LAK cells killing HR8348 cells was estimated by enzyme cyto-chemistry technique.SHD positive granules and AePase gray level were assayed with MIAS-300image analyser.The results showed:(1)After cocultivation of effector and target cells for vari-ous times,the activity of AcPase of HR8348 cells was apparently higher than that of the controlgroup,and it increased following prolonged coincubation.SDH activity of target cells increasedmarkedly within 30 and 60 rain cocultivation,but became low after 90 min treatment.(2)Ac-Pase content within LAK cells at 60,90,120,180 and 240 rain cocultivation was significantlyhigher than that of control group(P<0.01).The phenomenon of high AcPase and SDH activitywithin effector-target cells indicates that the function of the two types of cells was in an activestate.At the early stage of effector-target combining,the increase of SDH with HR8348 cellsmay be related to defensive function of the target cells.Higher AcPase activity of target cells in-dicates the activation of lysosomal enzyme which serves as the material basis for autolysis of thecells.     

脊髓萎缩（附2例报告）

本文报告了两例脊髓萎缩，并结合文献复习讨论了该病的好发部位、病因、临床表现、诊断和治疗。脊髓萎缩的病因多为继发性，也可为特发性。根据临床表现结合脊髓ＣＴ造影及ＭＲＩ检查，可以明确诊断。     

SOLIS在颈椎前路融合术中的应用

目的 探讨新型颈椎前路融合器(SOLIS)在颈椎前路融合术中的应用效果.方法 对18例脊髓型颈椎病、12例颈椎间盘突出症采用颈椎前路减压融合术,小切口入路(3～4 cm),椎间盘及部分椎体后缘切除后保留椎体终板,植人带自体松质骨的SOLIS.以手术前后X线片及JOA评分评价疗效.结果 30例随访6～18个月,平均12.5个月.置人的SOLIS位置良好,无移动及脱出迹象;病变椎间隙高度恢复正常,未见椎间高度丢失;所有节段均于术后3～8个月骨性融合.术前JOA评分平均10.4分,术后平均14.9分,两者有统计学意义(P＜0.01).结论 颈椎前路融合器SOLIS具有良好的生物相容性,手术创伤小,能有效地恢复颈椎高度,融合率高,融合后稳定性好,神经功能改善优良率高.     

人大肠癌细胞株（HT29）与人多器官血管内皮细胞粘附数目及形态学观察

为了模拟体内癌细胞与血管内皮粘附的过程，用人大肠癌细胞与人多器官血管内皮细胞共同培养，观察到与不同血管内皮粘附的癌细胞数有显著性统计学差异（Ｐ＜０．０５—０．０１）。与门静脉、肠系膜静脉内皮粘附的癌细胞数多，细胞表面微绒毛多，丝状突起细长，伪足多且长；与大隐静脉内皮粘附的癌细胞数少，细胞表面突起也细小。这表明不同的血管内皮对癌细胞的粘附是具有选择性的。     

LAK细胞体外杀伤直肠腺癌细胞的扫描电镜观察

应用扫描电镜观察体外LAK细胞与直肠腺癌细胞相互作用时的形态学变化。结果表明:LAK细胞与HR8348细胞均具有主动互相趋向运动,效靶细胞借其细胞突起及微绒毛相互接触。LAK细胞及肿瘤细胞的细胞突起及微绒毛由早期的平面接触逐渐发展为犬牙交错状结合。效靶细胞紧密结合后,靶细胞鼓泡,细胞膜出现环形穿孔。互相接触,结合的微绒毛及细胞突起在靶细胞的溶解过程中起到一个物理微桥的作用。LAK细胞分泌的杀伤物质通过微桥介导靶细胞的溶解。效靶细胞互相结合的微绒毛间形成关闭小室,它可能与维持局部杀伤物质浓度有关。     

Comparison of the efficacy and safety of the adalimumab biosimilar TQ-Z2301 and adalimumab for the treatment of Chinese patients with active ankylosing spondylitis: a multi-center,randomized, double-blind,phase III clinical trial

Clinical Rheumatology - To assess the clinical equivalence of TQ-Z2301, a biosimilar of adalimumab, to the reference adalimumab in the treatment of Chinese patients with active ankylosing...     

Mesopore-dominant nitrogen-doped carbon with a large defect degree and high conductivity via inherent hydroxyapatite-induced self-activation for lithium-ion batteries

In this study, N-doped mesopore-dominant carbon (NMC) materials were prepared using bio-waste tortoise shells as a carbon source via a one-step self-activation process. With intrinsic hydroxyapatites (HAPs) as natural templates to fulfill the synchronous carbonization and activation of the precursor, this highly efficient and time-saving method provides N-doped carbon materials that represent a large mesopore volume proportion of 74.59%, a high conductivity of 4382 m S⁻¹, as well as larger defects, as demonstrated by Raman and XRD studies. These features make the NMC exhibit a high reversible lithium-storage capacity of 970 mA h g⁻¹ at 0.1 A g⁻¹, a strong rate capability of 818 mA h g⁻¹ at 2 A g⁻¹, and a good capacity of 831 mA h g⁻¹ after 500 cycles at 1 A g⁻¹. This study provides a highly efficient and feasible method to prepare renewable biomass-derived carbons as advanced electrode materials for the application of energy storage.

A hydroxyapatite-induced self-activation method has been used to prepare nitrogen-doped mesopore-dominant carbon. The carbon has abundant macro/mesopores, high conductivity, and favorable defects and exhibited high-performance in LIBs.     

急性心肌梗死患者早期快速测定血浆N-末端B型利钠肽原的临床价值

目的探讨急性心肌梗死（AMI）患者早期快速测定血浆N-末端B型利钠肽原（NT—proBNP）的水平对临床预后的判断价值。方法选择56例符合诊断的AMI患者,人院早期快速测定血浆NT—proBNP的水平,根据血浆NT-proBNP的水平分成三组：A组〈500ng／L,B组500—2000ng／L,C组〉2000ng／L,观察三组在住院期间、30d发生心血管不良事件情况（严重心律失常、充血性心力衰竭、心源性休克及死亡）。结果三组住院期间、30d发生心血管不良事件情况（A组1例、0例,B组3例、1例,c组8例、6例）明显不同（χ2=6．705,P=0．035;χ2=7．957,P=0．008）。三组发生心血管不良事件发生率呈递增趋势,分别为6．6％．18．18％,73．69％。结论AMI患者早期快速测定血浆NT—proBNP水平,对评估AMI患者近期临床预后及指导治疗具有重要临床价值。     

冠心病与雄性激素的相关性

目的 探讨老年男性冠心病与内生性血浆睾酮及其它相关因素的关系.方法 选择ACS男性患者28例、稳定型心绞痛（SAP）男性患者28例、男性健康体检者28例为对照组.分别对三组人员进行颈动脉多普勒检查,并检查外周血睾酮（T）浓度及血脂（TC、LDL-C）、血糖（Glu）、CRP等相关指标,计算BMI.结果 ACS组、SAP组外周血T、TC、LDL-C、Glu等均显著高于对照组（P＜0.05）,冠心病患者（包括ACS、SAP）较对照组颈动脉中内膜厚度（IMT）、斑块个数等差异有统计学意义（P＜0.05）.ACS组与SAP组比较：外周血T、Tc、LDL-C、CRP的浓度及BMI、IMT、不稳定斑块差异均有统计学意义（P＜0.05）.ACS组与SAP组比较外周血Glu及硬斑例数差异无统计学意义（P＞0.05）.结论 老年男性冠心病患者T浓度与动脉粥样硬化、不稳定斑块、Tc、LDL-C、BMI呈负相关.     

泼尼松联合甲氨蝶呤氯喹治疗系统性红斑狼疮的研究

目的　回顾性研究 ,旨在探讨PMC治疗 (小剂量泼尼松合并甲氨蝶呤、氯喹 )对于轻、中度活动期SLE患者的疗效及副作用 ,以减少药物用量和副作用。方法　将入选的门诊患者按起始激素剂量 ,分为A (泼尼松剂量≤ 0 2mg·kg-1·d-1)和B (泼尼松 0 5～ 0 6mg·kg-1·d-1)两组 ,并联合应用甲氨蝶呤 7 5～ 10mg/周及氯喹 0 2 5g/d ,各 30例。观察疗效和副作用 ,为期 1年。结果　A组积分由治疗前的 2 1± 1 4降至 0 9± 0 7,B组感染多于A组 (2 2∶7,P <0 0 0 1) ,其中多为肺部感染 ,其次为皮肤感染。B组由 2 9± 2 3降至 1 3± 1 3。二组治疗前后相比疗效显著 ,但A、B两组间的疗效差异无显著性。B组中出现了库兴综合征及股骨头无菌性坏死 ,A组没有。结论　PMC方案对没有严重内脏累及的轻到中度的SLE患者有效。但在加大激素剂量的B组 ,感染问题比较突出