神经节苷脂对急性脑出血患者TNF-α、IL-1β、CRP的影响及疗效分析

目的观察神经节苷脂对急性脑出血患者的疗效及其对肿瘤坏死因子-α(TNF-α)、白细胞介素-1β(IL-1β)及C反应蛋白(CRP)的影响。方法选择2014年3月至2016年3月我院收治的118例急性脑出血患者作为研究对象。以数字法将其分为观察组及对照组,每组59例。观察组患者给予神经节苷脂进行治疗,对照组患者给予胞磷胆碱钠进行治疗,观察两组的疗效及TNF-α、IL-1β、CRP的变化。结果观察组疗效优者占61.02%(36/59),优良率为98.31%(58/59),明显高于对照组的35.59%(21/59)及76.27%(45/59)(P<0.05)。观察组呕吐、头痛以及食欲不振的患者数量均明显少于对照组(P<0.05)。治疗后观察组与对照组的评分均得到明显改善(P<0.05),但观察组的降低程度明显优于对照组(P<0.05)。观察组与对照组的TNF-α、IL-1β及CRP水平在治疗后均明显降低(P<0.05),但观察组的降低程度明显高于对照组(P<0.05)。结论神经节苷脂能够有效调节急性脑出血患者的TNF-α、IL-1β及CRP水平,并且能改善患者生活质量,缓解疼痛,效果较好。     

康复新液促进小鼠压疮创面愈合机制的研究

目的 探讨康复新液对小鼠压疮创面促进愈合的作用及机制.方法 根据缺血-再灌注损伤机制,通过体外磁片加压法制备小鼠早期压疮模型,观察康复新液对小鼠压疮愈合的影响和组织病理学改变,通过免疫组织化学法从碱性成纤维细胞生长因子(bFGF)、转化生长因子(TGF-β)、表皮细胞生长因子(EGF)的蛋白表达方面研究康复新液的作用机理.结果 康复新液对小鼠压疮具有一定的促愈作用,可促进肉芽组织生长、血管新生、坏死组织、炎性物质的清除,较高剂量的康复新液可上调bFGF、TGF-β、EGF的蛋白表达,较低剂量的康复新液亦可促进bFGF的蛋白表达.结论 康复新液对模型小鼠早期压疮创面促愈和修复的作用机制可能与促进bFGF蛋白的表达相关,对TGF-β及EGF蛋白表达的上调可能也发挥了协同作用.     

8-氧-叔丁基二甲基硅烷基-4,5-氧-羰基-3-去氧-β-D-甘露-2-辛酮糖甲酸酯烯丙基苷的合成

目的 研究8-氧-叔丁基二甲基硅烷基-4,5-氧-羰基-3-去氧-β-D-甘露-2-辛酮糖甲酸酯烯丙基苷的合成.方法 以草酰乙酸和D-阿拉伯糖为原料,通过cornforth反应、乙酰化、甲酯化、烯醇化、脱乙酰基、硅基化、碳酸酯化等7步反应制备目标化合物.结果与结论 与文献谱图进行对照,确证目标化合物的结构,7步反应的总收率为22％,化合物的立体选择性较高,方法操作简单、易于实施,为含(2-7)苷键结构的Kdo寡糖制备奠定了基础.     

TGF-β1与非创伤性股骨头坏死相关性研究

目的 探讨TGF-β 1在非创伤性股骨头坏死发病机制中的作用.方法 选取30例非创伤性股骨头坏死行股骨头置换手术切除的股骨头(观察组),10例非正常死亡者股骨头标本(对照组).分别取股骨头承重面软骨下骨组织及软骨标本,行HE染色及免疫组织化学技术检测TGF-β 1蛋白的表达.结果 ①肉眼观察:对照组关节面光滑完整,厚薄正常,切面鲜红,无骨化.实验组股骨头表面部分软骨增厚,局部与骨质分离.②HE染色:对照组关节软骨细胞层数正常,软骨细胞无极性改变,间质染色均匀.实验组软骨层增厚,细胞形态、排列改变,数量减少,纤维增生、骨化.③免疫组化染色:对照组软骨仅见到少许TGF-β 1阳性细胞(3.81％).实验组软骨细胞的胞浆及胞核多处可见黄色及棕色着色,以胞浆染色为主,与对照组相比,实验组(18.41％) TGF-β 1的表达明显增多(x2=3.93,P＜0,05).结论 股骨头坏死时TGF-β1的表达明显增多,且随软骨缺损程度的加重表达增高明显,提示TGF-β 1在非创伤性股骨头坏死发病机制中具有重要作用.     

肺泡表面活性物质联合双水平气道正压通气治疗新生儿呼吸窘迫综合征的临床疗效及对其血清TGF-β1和BMP-7表达水平的影响

目的探讨肺泡表面活性物质(PS)联合双水平气道正压通气(BiPAP)治疗新生儿呼吸窘迫综合征(NRDS)的临床疗效及对其血清中转化生长因子-β1(TGF-β1)和骨形态发生蛋白-7(BMP-7)表达水平的影响,为临床诊治提供参考依据。方法将2015年1月-2017年4月佳木斯大学附属第一医院收治的80例NRDS患儿随机分为观察组及对照组;对照组采用BiPAP治疗,观察组在对照组治疗的基础上联合PS治疗;在治疗结束后对临床疗效进行评估;治疗前及治疗结束后1h记录患儿呼吸频率、心率、氧合指数指标,并记录不良反应;治疗前及治疗后24h检测患儿血清中TGF-β1及BMP-7水平。结果观察组临床疗效显著优于对照组,差异有统计学意义(P<0.05);治疗后患儿心率、呼吸显著降低,氧合指数显著升高,且观察组患儿心率、呼吸显著低于对照组,氧合指数显著高于对照组,差异有统计学意义(均P<0.05);治疗后两组患儿血清中TGF-β1及BMP-7水平均显著降低,且观察组显著低于对照组,差异有统计学意义(均P<0.05);观察组不良反应发生率显著低于对照组,差异有统计学意义(P<0.05)。结论采用PS联合BiPAP对NRDS患儿治疗后,可有效提高临床疗效并降低不良反应发生率,并可有效改善血清中TGF-β1及BMP-7水平。     

NLRP3/IL-1β/TGF-β1信号轴在矽肺肺纤维化大鼠模型中的表达及意义

目的探讨NLRP3/IL-1β/TGF-β1信号轴在矽肺肺纤维化大鼠模型中的表达情况及意义。方法选择健康SPF级Wistar雄性大鼠80只,随机分为4组,分别为高(100 mg/ml)、中(50 mg/ml)、低(25 mg/ml)浓度SiO2染尘组和正常对照组,每组20只。各组分别在SiO2染尘后7 d、14 d、28 d、56 d处死5只大鼠,观察肺组织肺泡炎程度及肺纤维化程度,采用酶联免疫吸附试验(ELISA)检测肺组织中IL-1β、IL-18、TGF-β1含量,Western Blot法检测大鼠肺组织中NLRP3、Caspase-1蛋白表达情况。结果与正常对照组比较,各染尘组大鼠7 d、14 d、28 d、56 d的肺泡炎评分、纤维化程度明显升高,差异均有统计学意义(P<0.01);与正常对照组比较,各染尘组大鼠7 d、14 d、28 d、56 d的IL-1β、IL-18、TGF-β1浓度明显升高(P<0.01);与正常对照组比较,各染尘组大鼠肺组织中NLRP3、Caspase-1蛋白表达在7 d、14 d、28 d、56 d均升高(P<0.01);低、中、高浓度SiO2染尘组内NLRP3、Caspase-1、IL-1β、IL-18和TGF-β1表达量在7 d、14 d和28 d间两两比较,差异均有统计学意义(P<0. 05),均呈随着染尘时间的增加而升高的时间-效应关系。结论NLRP3及其下游因子Caspase-1、IL-1β、IL-18、TGF-β1在矽肺肺纤维化大鼠模型肺组织中高表达,提示NLRP3/IL-1β/TGF-β1信号轴可能与矽肺肺纤维化有密切的关系,在矽肺形成过程中发挥了作用。     

Nano-curcumin therapy,a promising method in modulating inflammatory cytokines in COVID-19 patients

BackgroundAs an ongoing worldwide health issue, Coronavirus disease 2019 (COVID–19) has been causing serious complications, including pneumonia, acute respiratory distress syndrome (ARDS), and multi-organ failure. However, there is no decisive treatment approach available for this disorder, which is primarily attributed to the large amount of inflammatory cytokine production. We aimed to identify the effects of Nano-curcumin on the modulation of inflammatory cytokines in COVID-19 patients.MethodForty COVID-19 patients and 40 healthy controls were recruited and evaluated for inflammatory cytokine expression and secretion. Subsequently, COVID-19 patients were divided into two groups: 20 patients receiving Nano-curcumin and 20 patients as the placebo group. The mRNA expression and cytokine secretion levels of IL-1β, IL-6, TNF-α and IL‐18 were assessed by Real‐time PCR and ELISA, respectively.ResultOur primary results indicated that the mRNA expression and cytokine secretion of IL-1β, IL-6, TNF-α, and IL-18 were increased significantly in COVID-19 patients compared with healthy control group. After treatment with Nano-curcumin, a significant decrease in IL-6 expression and secretion in serum and in supernatant (P = 0.0003, 0.0038, and 0.0001, respectively) and IL-1β gene expression and secretion level in serum and supernatant (P = 0.0017, 0.0082, and 0.0041, respectively) was observed. However, IL-18 mRNA expression and TNF-α concentration were not influenced by Nano-curcumin.ConclusionNano-curcumin, as an anti-inflammatory herbal based agent, may be able to modulate the increased rate of inflammatory cytokines especially IL-1β and IL-6 mRNA expression and cytokine secretion in COVID-19 patients, which may cause an improvement in clinical manifestation and overall recovery.     

(E)-2-(2-Allylidenehydrazinyl)thiazole derivatives: Design,green synthesis,in silico and in vitro antimycobacterial and radical scavenging studies

By understanding the rampant infections of Mycobacterium tuberculosis (Mtb) and inflammations caused due to the generation of radical species during the Mtb infection, a series of (E)-2-(2-allylidenehydrazinyl)thiazole derivatives, with dual-action properties, was designed. The molecules were designed with a considerable variation in LogP, one of the critical parameters in physicochemical properties, and analyzed for their drug-likeness. For the synthesis, a simple, green, and multicomponent one-pot synthesis method was developed. The in vitro inhibition potentials were evaluated against Mtb H₃₇Rv by the microplate Alamar Blue assay. The results reveal that compound 6 was potent, with a MIC value of 6.5 µg/ml, and showed better interactions with the KasA protein with binding free energy (ΔG) of −9.4 kcal/mol. Also, the radical scavenging properties were studied to establish the dual-action properties of the molecules. Compound 9 exhibited promising antioxidant and nitric oxide radical scavenging activities, with 81.7% and 81.0%, respectively, at 1,000-μg/ml concentration.