螺旋CT多功能重建在骨关节外伤中的应用

目的 探讨螺旋cT功能重建在骨与关节外伤中的应用，提高重建技术的使用能力和诊断水平。方法 对使用双层螺旋CT，SSD，MPR，MIP等多种方式重建检查的49例复杂的骨与关节外伤病例进行回顾性分析。结果 49例骨关节外伤重建成像，其中，颅底3例，颌面部7例，颈、胸、腰、骶椎共17例，肩胛骨3例，髋关节8例，膝关节11例。SSD在显示碎骨片明显移位的空间关系方面较MIP，MPR为佳，它可以直观地、立体地、清晰地、多角度显示骨关节损伤，而MIP在显示骨折细节方面较优，尤其在外伤中颅窝观察有关神经孔方面。结论 螺旋CT的SSD，MPR和MIP技术的综合应用，对复杂的骨折、关节损伤的显示效果良好，具有较高的临床应用价值。     

Regulation of Toll-like receptor-mediated inflammatory response by microRNA-152-3p-mediated demethylation of MyD88 in systemic lupus erythematosus

Objective

microRNAs (miRNAs) play critical roles in embryogenesis, cell differentiation and the pathogenesis of several human diseases, including systemic lupus erythematosus (SLE). Toll-like receptors (TLRs) are also known to exert crucial functions in the immune response activation occurring in the pathogenesis of autoimmune diseases like SLE. Herein, the current study aimed to explore the potential role of miR-152-3p in TLR-mediated inflammatory response in SLE.

Methods

We determined the miR-152-3p expression profiles in CD4⁺ T cells and peripheral blood mononuclear cells (PBMCs) harvested from patients with SLE and healthy controls, and analyzed the correlation between miR-152-3p expression and clinicopathological parameters. CD70 and CD40L expression patterns in CD4⁺ T cells were assessed by RT-qPCR and flow cytometry. ChIP was adopted to determine the enrichment of DNA methyltransferase 1 (DNMT1) in the promoter region of myeloid differentiation factor 88 (MyD88).

Results

The obtained findings revealed that miR-152-3p was highly-expressed in CD4⁺ T cells and PBMCs of patients with SLE, and this high expression was associated with facial erythema, joint pain, double-stranded DNA, and IgG antibody. DNMT1 could be enriched in the MyD88 promoter, and miR-152-3p inhibited the methylation of MyD88 by targeting DNMT1. We also found that silencing miR-152-3p inhibited MyD88 expression not only to repress the autoreactivity of CD4⁺ T cells and but also to restrain their cellular inflammation, which were also validated in vivo.

Conclusion

Our study suggests that miR-152-3p promotes TLR-mediated inflammatory response in CD4⁺ T cells by regulating the DNMT1/MyD88 signaling pathway, which highlights novel anti-inflammatory target for SLE treatment.

     

紫杉醇联合香菇多糖胸腔内用药治疗恶性胸水的临床分析

目的探讨紫杉醇联合香菇多糖局部胸腔灌注治疗恶性胸腔积液的疗效。方法将明确诊断为恶性胸腔积液60例患者随机分为试验组、对照1组及对照2组,胸腔引流后试验组给予紫杉醇和香菇多糖,对照1组给予紫杉醇,对照2组给予香菇多糖,治疗4周后结果比较疗效。结果试验组有效率80%,对照1组55%,对照2组45%,试验组明显优于对照两组（P〈0.05）。结论紫杉醇联合香菇多糖胸腔内用药治疗恶性胸水安全有效,值得临床推广。     

吉非替尼治疗21例晚期非小细胞肺癌疗效评价

目的：探讨吉非替尼治疗难治性晚期非小细胞肺癌的疗效和不良反应。方法：选择晚期非小细胞肺癌患者21例,给予吉非替尼250 mg/d口服,评价其临床疗效。结果：总的疾病控制率为52.4%,患者中位生存期为272 d。结论：吉非替尼可改善晚期非小细胞肺癌患者的临床症状和生活质量,且耐受好。     

从随机肽库中筛选血管内皮生长因子的抑制剂

目的：从随机噬菌体肽库中筛选血管内皮生长因子（VEGF165）的抑制剂,研究治疗实体瘤生长的小分子药物。方法：以VEGF165分子的受体KDR为靶分子,筛选随机噬菌体环7肽库,通过竞争性洗脱得到能特异结合KDR的阳性噬菌体,以ELISA、细胞免疫组化、细胞ELISA、鸡胚绒毛膜尿囊膜实验和MTT法,鉴定其结合活性和抑制活性。结果：得到5个能特异结合靶分子的阳性噬菌体克隆,它们均可以与表面有KDR表达的细胞结合,其中噬菌体克隆3和13还能抑制VEGF165诱导鸡胚绒毛尿囊膜新生血管形成的活性。但MTT法结果显示,这两种噬菌体小肽对高表达KDR的阳性细胞生长没有明显的抑制活性。结论：从随机噬菌体肽库筛选到了能抑制VEGF165生物活性的克隆,为进一步研究小分子抑瘤药物提供了一定基础。     

Dynamic changes in type Ⅰ collagen,MMP-1 and TIMP-1 after angioplasty

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“什伍膏”治疗急性无菌性软组织损伤的临床研究

目的:研究分析中药配方颗粒组方“什伍膏”在急性无菌性软组织损伤治疗方面的应用与效果。方法:纳入我院2019年7月-2020年2月期间收治的66例急性无菌性软组织损伤患者为本次研究的主要对象,采用双盲随机法分为研究组(36例)及对照组(30例),其中对照组患者接受云南白药喷雾剂治疗,研究组患者接受“什伍膏”治疗,就两组患者临床治疗情况进行评估分析并比较。结果:治疗后研究组患者患侧肢体疼痛、肢体肿胀程度改善情况均显著优于对照组(P<0.05),临床疗效显著高于对照组(P<0.05)。结论:对急性无菌性软组织损伤患者给予“什伍膏”治疗的临床效果确切,起效迅速且止痛消肿效果显著。     

192Ir血管内放射治疗对血管成形术后I型胶原表达的影响

探讨^192Ir血管内放射治疗对血管成形术后I型胶原表达的影响及其机制。小型猪髂动脉再狭窄模型，成形术后随机分为放疗组（血管数n=6)和对照组（血管数n=18)，分别于术后12周及24周取材进行I型胶原、MMP－1及TIMP－1的免疫组化染色和I型胶原mRNA原位杂交并进行定量研究。结果显示，放疗组I型胶原蛋白、mRNA及TIMP－1／MMP－1比值均低于对照组，对照组I型胶原mRNA表达高峰在24周，而放疗组表达高峰在12周。提示^192Ir血管内放射治疗通过抑制I型胶原的合成和调节MMP－1及TIMP－1的活性而影响血管成形术后细胞外胶原的代谢。