Interleukin 17A genetic variations and susceptibility to non‐small cell lung cancer

Lung cancer is the leading cause of cancer‐related death, in which non‐small cell lung cancer (NSCLC) is the most common type. Evidence have shown that interleukin 17 (IL‐17) greatly involves in human immune responses. In this study, we investigated the effect of IL‐17 on NSCLC by examining the association between IL‐17A genetic polymorphisms and the susceptibility to NSCLC. IL‐17A ‐420A/G and IL‐17A ‐73G/A polymorphisms were detected in 330 NSCLC patients and 382 healthy controls. We found that subjects carrying ?73GA genotype or AA genotype had 2.09‐fold or 2.52‐fold increased risk of NSCLC than those with ?73GG genotype [odds ratio (OR) = 2.09, 95% confidence interval (CI), 1.46 – 2.98, p < 0.001; OR = 2.52, 95% CI, 1.30–4.88, p = 0.005, respectively). However, the IL‐17A ‐420A/G did not reveal any correlation with the cancer. Further investigation showed that prevalence of IL‐17A ?73GA genotype and A allele were significantly increased in adenocarcinoma patients (OR = 1.75, 95% CI, 1.08–2.86, p = 0.024, OR = 1.57, 95% CI, 1.09–2.28, p = 0.016, respectively). We also evaluated the effect of the polymorphisms on gene expression, and identified that peripheral blood mononuclear cells with IL‐17A ‐73GA and AA genotypes produced significantly higher level of IL‐17 than the cells with IL‐17A ‐73GG genotype. Our results suggest that IL‐17A ‐73G/A genetic variations may upregulate IL‐17 expression and are associated with increased susceptibility to NSCLC.     

臭氧在妇科阴道炎症治疗中的应用

目的探讨臭氧在妇科阴道炎治疗中的作用及安全性。方法对2009年6月至2012年6月在来宾市卫校附属医院就诊的800例阴道炎患者的临床资料进行回顾性分析。依据炎症类型分为细菌性阴道炎(BV)、滴虫阴道炎(TV)、念珠菌性阴道炎(MV)、混合性阴道炎(CV)4类,各200例;每类再根据治疗方法不同分为臭氧组和常规治疗组,每组100例,其中臭氧组予以臭氧治疗,常规治疗组予以常规治疗,比较4类中臭氧组与常规治疗组患者临床症状及体征改善情况、治疗效果、症状缓解时间及不良反应发生情况。结果 BV、MV及CV患者治疗后,臭氧组与常规治疗组症状体征评分及症状缓解时间比较差异无统计学意义(P>0.05),而TV臭氧组与常规治疗组的症状体征评分及症状缓解时间比较差异有统计学意义(P<0.05)。除TV中的常规治疗组疗效显著高于臭氧组(P<0.05)外,其余各类阴道炎的臭氧组与常规治疗组的疗效比较差异均无统计学意义(P>0.05);治疗中臭氧组有2例MV患者因臭氧过敏出现临床症状轻度加重,常规治疗组有5例出现局部药疹,4例外阴瘙痒加重,两组不良反应差异有统计学意义(χ2=4.517,P<0.05)。结论臭氧在妇科阴道炎症中的应用,具有效性、安全性,有广阔的应用前景。     

2种取血方式下SD大鼠血常规及生化指标变化的探讨

目的了解成年雌雄SD大鼠在应激与麻醉两种取血方式下,血常规及生化指标变化趋势。方法初离乳SD大鼠400只,雌雄各半,分20批,喂饲30 d后,禁食16 h,不禁水,前10批应激状态下取静脉血,后10批麻醉后取静脉血,进行血常规及生化共14项指标测定,比较两种方式下各项指标的差异。结果 2种取血方式下,雌雄SD大鼠共有10项指标同时出现差异。结论了解雌雄大鼠在应激与麻醉两种状态下血常规及生化指标差异,对其安全性毒理学评价有重要意义。     

Peripheral whole blood FOXP3 TSDR methylation: a potential marker in severity assessment of autoimmune diseases and chronic infections

Immune dysregulation is a cardinal feature of autoimmune diseases and chronic microbial infections. In particular, regulatory T cells are downregulated in autoimmune diseases while upregulated in chronic microbial infections. FOXP3 is the master regulator of Treg development. Treg-specific demethylated region (TSDR) is a highly conserved locus on the FOXP3 gene that is fully demethylated in natural Tregs but methylated in effector T cells. In our study, we used high resolution melt-polymerase chain reaction (HRM-PCR) to determine the FOXP3 TSDR methylation status in autoimmune diseases and chronic microbial infections. We found that FOXP3 TSDR to have the highest mean melting temperature (highly methylated) in active SLE patients compared to all the other groups (p?<?0.001). The psoriasis group also had a significantly high mean melting temperature (78.62?±?0.20) when compared with the inactive SLE group (78.49?±?0.29, p?<?0.05) and control group (78.44?±?0.25, p?<?0.01). There was no significant difference in melting temperature between inactive SLE and healthy controls. Disease activity in SLE was directly associated with methylation of the FOXP3 TSDR. On the other hand, patients with chronic microbial infections had significantly lower FOXP3 TSDR mean melting temperature (demethylated) when compared with healthy controls (78.28?±?0.21 vs 78.44?±?0.25, p?<?0.05). Our results suggest that the use of HRM-PCR to detect FOXP3 TSDR methylation status is a reliable and easy method to predict natural regulatory T cell levels in peripheral blood in different disease conditions. Determining FOXP3 TSDR methylation status can be a useful tool in diagnosis, and monitoring the severity of autoimmune diseases and chronic microbial infections.     

康健三维疗法治疗膝骨关节炎疗效观察

目的 观察康健三维疗法治疗膝骨性关节炎(KOA)的临床疗效.方法 将60例KOA患者按照随机数字表法分为2组,治疗组30例予康健三维疗法治疗(康健关节葆胶囊口服加医用几丁糖关节腔注射联合股四头肌功能锻炼),对照组30例予塞来昔布胶囊口服联合玻璃酸钠注射液关节腔内注射治疗.2组均治疗6周后统计疗效,比较2组治疗前、治疗后、治疗后2个月西安大略和麦克马斯特大学骨关节炎指数(WOMAC)评分(包含疼痛、僵硬、躯体功能)、疼痛视觉模拟评分(VAS)变化情况.结果 治疗组总有效率93.3％(28/30),对照组83.3％(25/30),治疗组疗效优于对照组(P<0.05).2组治疗后、治疗后2个月WOMAC疼痛、僵硬、躯体功能评分与本组治疗前比较均降低(P<0.05),且治疗组治疗后、治疗后2个月评分均低于与对照组治疗后同期水平.2组治疗后、治疗后2个月疼痛VAS与本组治疗前比较均降低(P<0.05),且治疗组治疗后、治疗后2个月疼痛VAS均低于对照组治疗后同期水平.结论 康健三维疗法治疗KOA,临床疗效确切,可明显缓解患者疼痛症状,改善膝关节功能,且远期疗效稳定.     

靶向CD47 抗肿瘤治疗的研究进展

[摘要] CD47 是细胞表面高度糖化的穿膜蛋白，是一种“别吃我”信号，可与信号调节蛋白α（SIRPα）等形成CD47-SIRPα 抑制信号复合体，从固有免疫和适应性免疫两方面同时逃避机体的免疫监视。研究发现，CD47 在血液肿瘤和多种实体瘤中高表达，通过与巨噬细胞上的SIRPα 配体结合，启动一系列抑制性的信号转导而躲避吞噬，其高水平表达既能促进肿瘤细胞的生长又能促进肿瘤细胞的转移。通过抗CD47 抗体阻断CD47-SIRPα 信号通路，达到抑制肿瘤细胞的免疫逃逸，增强巨噬细胞的吞噬作用和适应性免疫应答，是免疫治疗肿瘤的新途径。目前，国内外开展了越来越多靶向CD47-SIRPα 的药物或抗体的基础研究和临床试验，有望从抗体分子设计和重组蛋白等方面解决靶向CD47 抗肿瘤治疗时发生的贫血和输液相关不良反应等问题。本文就CD47 的分子结构与生理功能、CD47-SIRPα 表达调控机制、CD47 抗肿瘤治疗研究现状以及靶向CD47 导致的相关生物安全性问题和解决方案等方面进行综述，为CD47新靶点的基础研究和临床应用提供参考。     

miR-149与肿瘤关系的研究进展

miRNAs是一类长度约为20~25个核苷酸，参与基因调控表达的内源性非编码RNA。miR-149作为miRNAs的重要成员，在多种肿瘤中表达异常，其表达水平与肿瘤细胞增殖、转移、凋亡、耐药、患者的早期诊断及预后密切相关。因此，miR-149有望成为新一类抗肿瘤治疗的靶点。