PDGF-C/-D在IgA肾病肾间质纤维化中的表达及意义

目的 探讨血小板源性生长因子-C(plelet-derived growth fctor-C,PDGF-C)和血小板源性生长因子-D(plelet-derived growth fctor-D,PDGF-D)与IgA肾病患者不同程度肾间质纤维化的关系及意义.方法 将50例肾组织标本按肾间质纤维化程度分为4组(对照组、轻度组、中度组、重度组).应用免疫组化方法检测各组PDGF-C及PDGF-D的表达,并将PDGF-C/-D的表达情况与肾间质纤维化程度及临床指标(24h尿蛋白、尿素氮、肌酐)进行相关性分析.结果 IgA肾病患者肾组织PDGF-C/-D的表达水平明显高于对照组(P＜0.05),且与肾间质纤维化的程度成正相关(r=0.654和r=0.571,P＜0.01).此外,IgA肾病肾组织PDGF-C/-D的表达与血尿素氮(BUN)及血肌酐(Scr)水平呈正相关(P＜0.05),与24h尿蛋白定量无明显相关性.结论 随着肾小管间质病变程度的加重,PDGF-C、PDGF-D的表达量明显上调,PDGF-C/-D可能在IgA肾病肾间质纤维化的发生、发展过程中起着重要的作用.     

扶正化瘀胶囊配合肝病治疗仪治疗慢性肝炎肝纤维化30例

目的评价扶正化瘀胶囊联合肝病治疗仪治疗慢性肝炎肝纤维化的临床疗效。方法 60例确诊为慢性肝炎肝纤维化患者分成两组,对照组给予单纯的扶正化瘀胶囊治疗,联合组采取扶正化瘀胶囊联合肝病治疗仪治疗方案,观察治疗前后肝功能指标变化情况。结果联合组ALB、T-Bi L、PTA等肝功指标改善效果优于对照组,HA、LN等肝纤维化指标下降幅度大于对照组(P0.05),对比差异均具有统计学意义。联合组有效率为90.0%,显著高于对照组的76.7%(χ~2=13.452,P0.05)。结论扶正化瘀胶囊联合肝病治疗仪能够进一步改善慢性肝炎肝纤维化治疗效果,协同作用强,适合临床推广。     

中医药对肺纤维化大鼠肺组织超微结构的影响

肺纤维化是一种发病机制尚不明确的慢性炎症性肺疾病,中医药(包括针灸)等治疗方法在对其治疗上有着独特的优势。随着现代医学科学技术的发展,许多新的研究手段逐渐应用于肺纤维化的研究,本文查阅近十余年来应用透射电子显微镜研究肺纤维化的文献,总结了传统中医药及针灸治疗对肺纤维化超微结构的影响,以期获得临床用药的实验室基础。     

Relationship Among Radiological Measurements of Anterior Mediastinal Fat and Outcomes of Lung Transplantation in Fibrotic Patients

ObjectiveLung transplantation (LT) for pulmonary fibrosis is related to higher mortality than other transplant indications. We aim to assess whether the amount of anterior mediastinal fat (AMF) was associated to early and long-term outcomes in fibrotic patients undergoing LT.MethodsRetrospective analysis of 92 consecutive single lung transplants (SLT) for pulmonary fibrosis over a 10-year period. AMF dimensions were measured on preoperative CT-scan: anteroposterior axis (AP), transverse axis (T), and height (H). AMF volumes (V) were calculated by the formula: AP × T × H × 3.14/6.According to the radiological AMF dimensions, patients were distributed into two groups: low-AMF (V < 20 cm³) and high-AMF (V > 20 cm³), and early and long-term outcomes were compared by univariable and multivariable analyses.ResultsThere were 92 SLT: 73M/19F, 53 ± 11 [14–68] years old. 30-Day mortality (low-AMF vs. high-AMF): 5 (5.4%) vs. 15 (16.3%), p = 0.014. Patients developing primary graft dysfunction within 72 h post-transplant, and those dying within 30 days post-transplant presented higher AMF volumes: 21.1 ± 19.8 vs. 43.3 ± 24.7 cm³ (p = 0.03) and 24.4 ± 24.2 vs. 56.9 ± 63.6 cm³ (p < 0.01) respectively. Overall survival (low-AMF vs. high-AMF) (1, 3, and 5 years): 85%, 81%, 78% vs. 55%, 40%, 33% (p < 0.001).Factors predicting 30-day mortality were: BMI (HR = 0.77, p = 0.011), AMF volume (HR = 1.04, p = 0.018), CPB (HR = 1.42, p = 0.002), ischaemic time (HR = 1.01, p = 0.009).Factors predicting survival were: AMF volume (HR = 1.02, p < 0.001), CPB (HR = 3.17, p = 0.003), ischaemic time (HR = 1.01, p = 0.001).ConclusionPreoperative radiological assessment of mediastinal fat dimensions and volumes may be a useful tool to identify fibrotic patients at higher risk of mortality after single lung transplantation.     

人脂肪来源间充质干细胞条件培养基对病理性瘢痕成纤维细胞生物学行为的影响

目的探讨人脂肪间充质干细胞条件培养基(human adipose-derived mesenchymal stem cells conditioned media,hADSCs-CM)对病理性瘢痕成纤维细胞增殖、迁移能力的影响。方法分离培养hADSCs和病理性瘢痕成纤维细胞,取第3代细胞用于后续实验。于培养12、24、48 h收集hADSCs条件培养基作为实验组条件培养基(12 h-CM、24 h-CM、48 h-CM),无hADSCs的空白无血清低糖DMEM培养基置于培养箱内12、24、48 h作为对照组条件培养基(12 h-CC、24 h-CC、48 h-CC)。选取增生性瘢痕成纤维细胞(HSFs)、瘢痕疙瘩成纤维细胞(KFs)以及正常皮肤成纤维细胞(NFs),分别以实验制备的培养基进行处理,每组培养基3个复孔,以CCK-8实验检测HSFs及KFs的增殖能力,以细胞划痕实验检测条件培养基处理后细胞迁移能力的变化,流式细胞仪分析细胞的周期分布、凋亡及乳酸脱氢酶(LDH)水平变化情况。实验数据以Graphpad 7.0软件进行分析,多组样本均数比较应用One-Way ANOVA,P<0.05为差异有统计学意义。结果CCK-8结果显示,24 h-CM、48 h-CM处理后24 h KFs、HSFs的增殖速度较对照组开始出现明显减慢,HSFs增殖趋势也出现了类似的变化趋势,NFs无明显的增殖趋势变化;实验组条件培养基对HSFs增殖的抑制作用在48 h达到峰值:24 h-CM KFs增殖活性为1.81±0.10,24 h-CC KFs为2.36±0.05(t=4.24,P<0.001);24 h-CM HSFs增殖活性为1.52±0.10,24 h-CC HSFs为1.96±0.15(t=8.98,P=0.001);48 h-CM KFs增殖活性为1.65±0.10,48 h-CC KFs为2.57±0.10(t=26.64,P<0.001);48 h-CM HSFs增殖活性为1.29±0.20,48 h-CC HSFs为1.94±0.10(t=11.14,P<0.001);之后抑制作用渐弱。细胞划痕实验结果表明,与对照组相比,24、48 h收集的hADSCs-CM处理后HSFs和KFs的迁移能力下降。细胞周期检测结果显示,在KFs中,12 h-CM、24 h-CM、48 h-CM组细胞处于G0/G1期的细胞比例较对照组升高,而处于S期的细胞比例则较对照组下降,在HSFs中也观察到了类似的现象。细胞凋亡检测结果显示各组NFs、KFs、HSFs未见明显凋亡。LDH漏出检测结果显示各组间无明显差异。结论hADSCs条件培养基可能通过其中含有的分泌因子抑制病理性瘢痕成纤维细胞的增殖、迁移,但不诱导其凋亡。     

FOXO1/3: Potential suppressors of fibrosis

Fibrosis is a universally age-related disease that involves nearly all organs. It is typically initiated by organic injury and eventually results in organ failure. There are still few effective therapeutic strategy targets for fibrogenesis. Forkhead box proteins O1 and O3 (FOXO1/3) have been shown to have favorable inhibitory effects on fibroblast activation and subsequent extracellular matrix production and can ameliorate fibrosis levels in numerous organs, including the heart, liver, lung, and kidney; they are therefore promising targets for anti-fibrosis therapy. Moreover, we can develop appropriate strategies to make the best use of FOXO1/3’s anti-fibrosis properties. The information reviewed here should be significant for understanding the roles of FOXO1/3 in fibrosis and should contribute to the design of further studies related to FOXO1/3 and the fibrotic response and shed light on a potential treatment for fibrosis.     

炎性肿块肺纤维化组织中miR-21和TGFβ1的表达变化

[目的]观察炎性肿块肺纤维化组织中miR-21和转化生长因子β1(transforming growth factorβ1,TGFβ1)的表达变化,探讨两者的表达变化是否与肺纤维化形成有关.[方法]选择10例炎性肺部肿块标本,每例分别按纤维化组织和旁近正常肺组织配对留取,所有标本均采用Real-time PCR方法检测组织中miR-21和TGFβ1的表达量变化,分析其表达是否与肺纤维化有关.[结果]肺纤维化组织中miR-21和TGFβ1的表达明显高于正常旁近肺组织,且两者相比较差异均有显著性(P＜0.01).[结论]miR-21和TGFβ1在炎性肿块肺纤维化组织中高表达,其高表达与炎症导致的肺纤维化形成有关.     

基质金属蛋白酶-9与自发性高血压大鼠心肌纤维化的相关性研究

目的:探讨基质金属蛋白酶-9(MMP-9)与自发性高血压大鼠(SHR)心肌纤维化的相关性。方法:将16只14周龄雄性SHR随机平分为ACEI组和对照组,另以8只同龄雄性SD大鼠作为正常对照组。ACEI组以卡托普利100mg/(kg.d)灌胃,SHR对照组不灌药,于灌药12周后麻醉下取出大鼠心脏。免疫组化分析MMP-9、Collagen和的表达;RT-PCR检测MMP-9mRNA表达;MASSON染色测量胶原容积分数(CVF);碱水解法测定羟脯氨酸(Hypro)含量。结果:(1)SHR对照组LVI、CVF、Hypro、MMP-9、Collagen和的表达明显高于正常对照组(P<0.01);相对于SHR对照组,ACEI组各参数则显著降低(P<0.05);(2)MMP-9与上述指标呈高度正相关(P<0.01)。结论:MMP-9与SHR心肌纤维化密切相关,ACEI能抑制MMP-9的表达。     

CT Findings in People Who Were Environmentally Exposed to Asbestos in Korea

Asbestos related pleuropulmonary disease has been emerging health problem for recent years. It can cause variable clinical symptoms and radiological abnormalities. However, there has been no report for their characteristics in subjects who were environmentally exposed to asbestos. We reviewed the CT images of 35 people who were environmentally exposed to asbestos in Chungnam province, Korea. The study result showed high incidence of pleural plaque and pulmonary fibrosis on chest CT (94% and 77%, respectively). The common CT findings of lung parenchymal lesions were as follows: centrilobular opacities (94%), subpleural dot-like or branching opacities (80%), interlobular septal thickening (57%), intralobular interstitial thickening (46%), parenchymal bands (43%) and subpleural curvilinear line (29%). There were no significant differences in the prevalence of pulmonary fibrosis and pleural plaques according to sex, age and duration of exposure. In conclusion, pleural plaque and pulmonary fibrosis are common asbestos-related CT finding in the exposed people. Asbestos related lung parenchymal CT findings in the participants with environmental exposure show similar to those observed in the occupational exposure.