高效液相色谱法测定宁神补心片丹参酮ⅡA的含量

目的建立高效液相色谱法测定宁神补心片中丹参的丹参酮ⅡA含量.方法利用Lichrospher5-C18色谱柱,流动相甲醇-水为73∶27,检测波长为270 nm,流速1.6 mL/min,柱温为30℃.结果进样量在0.208～1.664 μg范围内呈现良好的线性关系,回归方程为Y=2.735×107X 8.870×105,r=0.9996,平均回收率为98.54%,RSD=1.33%(n=5).结论该方法快速简便,准确可靠,灵敏度高,可用于宁神补心片的质量控制.     

RhCcEe抗原配合性悬浮红细胞输注在温抗体型AIHA患者紧急输血中的应用

目的 研究RhCcEe抗原配合性悬浮红细胞输注对提高温抗体型自身免疫性溶血性贫血(AIHA)患者紧急输血安全性和有效性的作用.方法 根据输血情况将我院温抗体型AIHA患者接受紧急红细胞血液成分输注者分为A、B、C三组,A组进行ABO,RhC、c、D、E、e抗原相合性或相容性悬浮红细胞输注;B组仅进行ABO、RhD相合性...     

系统免疫炎症指数在胰腺导管腺癌患者Whipple术后总体生存率中的预测价值

目的:研究系统免疫炎症指数(SII)在胰腺导管腺癌患者Whipple术后总体生存率中的预测价值。方法:回顾性分析2010年1月1日至2017年12月31日在郑州大学第一附属医院进行Whipple术的胰腺导管腺癌患者临床资料,计算SII值。取SII最佳截断值为900,以900为界值将所有患者分为低SII组(SII≤900...     

The role of toll-like receptors (TLRs) in pan-cancer

BackgroundToll-like receptors (TLRs) are important components of the innate and adaptive immune systems, and abnormal TLR expression has been linked to a variety of cancers. However, there was a lack of clarity on the association of TLR stimulation with the carcinogenesis of cancer. The study''s goal was to analyse the clinical importance of TLRs expression at the mRNA level in pan-cancer datasets, as well as the link between TLR expression and carcinogenesis, progression, and clinical prognosis.MethodsThe expression profile of TLRs derived from UCSC pan-cancer data was analysed in multiple dimensions, including clinical analysis, immunological subtype analysis, tumour microenvironment (TME) analysis, tumour stem cell correlation analysis, and drug sensitivity analysis. Additionally, we analyse protein-protein interactions, functional enrichment, and chromatin accessibility, as well as TLR expression in single-cell sequencing data.ResultsOur multi-omics analysis results imply that TLRs may operate as a biological marker for carcinogenesis and progression, a potential target for anti-tumour therapy, and a prognostic biomarker, laying the theoretical groundwork for future translational medicine research.ConclusionTLRs are involved in the formation of malignancies and can be explored in further detail as potential prognostic indicators.

Key Messages

• Toll-like receptors (TLRs) are key factors in the process of the innate and adaptive immune response, and their aberrant expression of TLRs have been widely reported in various cancer. However, the association between TLRs stimulation and tumorigenesis of cancer has not been well clarified.
• In this study, in the pan-cancer data, integrated TLR family gene expression analysis, clinical correlation analysis, immune subtype correlation analysis, tumour microenvironment correlation analysis, tumour stem cell correlation analysis, and drug sensitivity correlation analysis were performed.
• TLRs play an important role in the development of tumours and can be studied in depth as potential prognostic markers.

     

磷酸二酯酶4抑制剂咯利普兰对慢性应激抑郁模型大鼠学习记忆及海马突触可塑性的影响

目的 探讨磷酸二酯酶4(phosphodiesterase 4,PDE4)抑制剂咯利普兰对慢性应激抑郁模型大鼠行为活动、学习记忆及海马突触可塑性的影响.方法 采用慢性温和不可预见性应激的方式建立抑郁模型,将SD大鼠随机分为4组,即空白组、抑郁模型组、氟西汀组、咯利普兰组.造模的同时,氟西汀组灌胃氟西汀(5.4 mg/k...     

精神分裂症症状严重度预测维思通的6周疗效

目的通过精神分裂症疗前症状的严重度预测维思通治疗6周时的疗效。方法对27例服用维思通(3.9±1.0)mg/d的精神分裂症患者在治疗前和治疗6周末分别评定简明精神病量表(BPRS)。结果疗前BPRS总分与6周BPRS总分减分值相关(r=0.526,P<0.05)。同样,焦虑忧郁、缺乏活力、思维障碍、激活性和敌对猜疑因子的疗前分分别与6周减分值有正相关(r分别为0.965、0.525,0.604、0.715和0.882,P<0.05)。结论疗前总症状或各症状群越重,维思通治疗6周后的相关症状改善越明显,基线各因子的预测效率以焦虑忧郁和敌对猜疑为最高,激活性为中度,而思维障碍和缺乏活力为低度。     

复方银杏叶胶囊质量标准的研究

目的研究复方银杏叶胶囊的质量控制方法。方法采用TLC法对复方中的银杏叶提取物、白芍药、人参叶分别进行薄层鉴别研究。采用HPLC方法,样品用甲醇超声提取30min,在C18柱上以甲醇-水(31:69)为流动相,在波长230nm处紫外检测测定复方中芍药苷的含量。结果银杏叶提取物、白芍药和人参叶薄层鉴别具有较好的专属性,芍药苷含量测定的线性范围为0.120～1.80μg,线性回归方程为Y=2100.48X 8.65968,r=0.9999,平均回收率为100.41%,RSD为3.02%。测定了复方白芍药中芍药苷的含量。结论本质量标准可有效地控制复方银杏叶胶囊的药物质量。     

Self-assembled morphologies of polyelectrolyte-grafted nanoparticles directed by oppositely charged polymer matrices

Self-assembled structure of polymer grafted nanoparticles is an interesting and growing subject in the field of hybrid electronics and high energy density materials. In light of this, the self-assembled morphologies of polyelectrolyte (PE) sparsely grafted nanoparticles tuned by oppositely charged matrix chains are studied using molecular dynamics simulations. Our focus is to elucidate the effect of matrix chain polymerization on modulating the stretching properties of tethered PE layers, on the self-assembled structuring of nanoparticles. Through varying the matrix chain length and stiffness as well as electrostatic interaction strength, rich phase behaviors of PE coated nanoparticles are predicted, including spherical micelle-like structures being preferred with short matrix chains and percolating network morphologies favored with long matrix chains, which is more pronounced with an enhanced matrix chain rigidness. To pinpoint the mechanisms of self-assembled structure formation, the thickness of grafted layers, the gyration radius of tethered chains, and pair correlation functions between nanoparticles are analyzed carefully. Additionally, electrostatic correlations, manifested as the bridging via matrix chains, are examined by identifying three states of matrix PE chains. Our simulation results may be useful for designing smart polymer nanocomposites based on PE coated nanoparticles.

Self-assembled structure of polymer grafted nanoparticles is an interesting and growing subject in the field of hybrid electronics and high energy density materials.     

基于扫描式葡萄糖监测系统的儿童1型糖尿病患者血糖波动的影响因素

目的：经典1型糖尿病(type 1 diabetes mellitus,T1DM)患者由于胰岛β细胞破坏、胰岛素绝对缺乏,需终身依赖外源性胰岛素治疗。中国糖尿病患儿中T1DM约占90%,发病率快速增加且低龄化严重。流行病学研究显示中国患儿平均糖化血红蛋白(glycated haemoglobin,HbA1c)整体偏高、达标率低。良好的血糖管理是糖尿病治疗的重点,维持血糖在目标范围内可阻止或延缓T1DM患者慢性血管并发症。本研究旨在利用扫描式葡萄糖监测系统(flash glucose monitoring system,FGMS)了解湖南省和河南省T1DM患儿的血糖控制情况,分析该群体血糖波动的影响因素。方法：选择2017年8月至2020年8月于两省16所医院内分泌科就诊的T1DM患儿215例,年龄≤14岁,均佩戴FGMS采集血糖数据,分析HbA1c、病程和葡萄糖扫描频率与血糖波动的相关性;根据患儿病程、HbA1c、葡萄糖扫描频率及胰岛素注射方式等因素进行分组比较。结果：HbA1c、病程与平均血糖、血糖标准差、平均血糖波动幅度(mean amplitude of glucose excu...     

益生菌改善孕期应激子代大鼠异常行为和海马损伤

目的：在怀孕期间孕妇极易对外界刺激产生应激反应,影响自身健康和胎儿发育。目前针对孕妇在孕期的应激反应没有很好的治疗方式,本研究旨在探索益生菌对孕期应激子代异常行为和海马损伤的作用。方法：将SD孕鼠分为对照组、应激组、益生菌组,每组6只。对照组不做任何处理;应激组在母鼠怀孕第15～20天进行束缚应激;益生菌组在母鼠怀孕第15～20天进行束缚应激的同时给予双歧杆菌三联活菌胶囊,子代继续给予益生菌饲喂直至生后60 d(P60)。子代大鼠在出生后60～70 d完成旷场实验、高架十字迷宫实验、新物体识别实验和Barnes迷宫实验等行为学检测。采用尼氏染色反映海马神经元受损的情况;免疫组织化学染色检测小胶质细胞标志物离子钙接头蛋白1(ionized calcium binding adapter molecule 1,IBA-1)的表达,以反映小胶质细胞活化情况;ELISA检测血浆TNF-α、IL-1β的含量;蛋白质印迹法检测Bax、Bcl-2及caspase-3的表达。结果：应激组子代大鼠在旷场中央区滞留时间明显少于对照组(P<0.01),益生菌组在旷场中央区滞留时间明显长于应激组(P&l...