艾灸联合综合性营养干预对晚期肝癌患者营养状况及细胞免疫功能的影响

目的 探讨艾灸联合综合性营养干预对晚期肝癌患者营养状况及细胞免疫功能的影响。方法 选取2017年1月～2019年5月我院门诊就诊晚期肝癌患者76例,采用抛硬币法将患者分为联合组和对照组各38例。对照组患者给予综合性营养干预治疗,联合组患者在对照组综合性营养干预基础上加以艾灸治疗。两组患者均治疗8周。观察并比较两组患者治疗前后的营养状况[血清血红蛋白(Hb)、白蛋白(ALB)和上臂三头肌肌围(MAMC)]及免疫功能[CD3~+、CD4~+、CD8~+和CD4~+/CD8~+比值]指标的变化。结果 治疗8周后,两组患者血清Hb、ALB及MAMC水平较治疗前显著上升(P0.05或P0.01),且联合组患者上升幅度较对照组更显著(P0.05);两组患者血清CD3~+、CD4~+和CD4~+/CD8~+比值较治疗前显著上升,CD8~+较治疗前显著下降(P0.05或P0.01),且联合组患者变化幅度较对照组更显著(P0.05)。结论 艾灸联合综合性营养干预用于晚期肝癌患者不仅可改善其营养状况,减少营养不良的发生,而且可以纠正T淋巴细胞紊乱,增强细胞免疫功能。     

细胞免疫、体液免疫指标与难治性支原体肺炎患儿病情的关系

目的探讨细胞免疫指标、体液免疫指标与小儿难治性支原体肺炎病情的关系。方法 收集我院2016 年11 月～2019 年11 月儿科收治的74 例小儿支原体肺炎患儿作为研究对象,根据儿童肺炎支原体肺炎诊治专家共识中诊断意见,分为A 组（普通支原体肺炎,n=42）与B 组（难治性支原体肺炎,n=42）。对比两组细胞免疫指标（CD3+、CD4+）与体液免疫指标[免疫球蛋白G（IgG）、免疫球蛋白M（IgM）]的水平变化情况,并分析CD3+、CD4+、IgG、IgM 的水平,以及与难治性支原体肺炎患儿病情的关系。结果 B 组患儿的CD3+为（52.42±4.01）%、CD4+（27.97±4.26）%水平均比A 组[（60.01±4.32）%、（33.63±4.15）%]低,差异有统计学意义（t=7.721、5.746,P=0.000、0.000）;B 组患儿的IgG（10.43±1.16）g/L、IgM 为（2.10±0.70）g/L 水平均比A 组[（7.30±1.13）g/L、（1.43±0.78）g/L]高,差异有统计学意义（t=11.670、3.824,P=0.000、0.000）;将小儿难治性支原体肺炎中重度难治性支原体肺炎是否发生作为因变量（1=中重度,0=轻度）,分别将CD3+、CD4+、IgG、IgM 作为协变量,经二元Logistic 回归分析检验结果显示CD3+、CD4+、IgG、IgM 均可能是中重度难治性支原体肺炎的影响因素（OR＞1,P＜0.05）。结论 细胞免疫、体液免疫与小儿难治性支原体肺炎密切相关,检测其指标对小儿难治性支原体肺炎具有诊断意义,并能够有效观察小儿难治性支原体肺炎的病情严重程度,值得临床推广应用。     

Copper ability to induce premature senescence in human fibroblasts

Human diploid fibroblasts (HDFs) exposed to subcytotoxic concentrations of oxidative or stressful agents, such as hydrogen peroxide, tert-butylhydroperoxide, or ethanol, undergo stress-induced premature senescence (SIPS). This condition is characterized by the appearance of replicative senescence biomarkers such as irreversible growth arrest, increase in senescence-associated β-galactosidase (SA β-gal) activity, altered cell morphology, and overexpression of several senescence-associated genes. Copper is an essential trace element known to accumulate with ageing and to be involved in the pathogenesis of some age-related disorders. Past studies using either yeast or human cellular models of ageing provided evidence in favor of the role of intracellular copper as a longevity modulator. In the present study, copper ability to cause the appearance of senescent features in HDFs was assessed. WI-38 fibroblasts exposed to a subcytotoxic concentration of copper sulfate presented inhibition of cell proliferation, cell enlargement, increased SA β-gal activity, and mRNA overexpression of several senescence-associated genes such as p21, apolipoprotein J (ApoJ), fibronectin, transforming growth factor β-1 (TGF β1), insulin growth factor binding protein 3, and heme oxygenase 1. Western blotting results confirmed enhanced intracellular p21, ApoJ, and TGF β1 in copper-treated cells. Thus, similar to other SIPS-inducing agents, HDF exposure to subcytotoxic concentration of copper results in premature senescence. Further studies will unravel molecular mechanisms and the biological meaning of copper-associated senescence and lead to a better understanding of copper-related disorder establishment and progression.

Electronic supplementary material

The online version of this article (doi:10.1007/s11357-011-9276-7) contains supplementary material, which is available to authorized users.     

Role of 12 ? lipoxygenase in the process of diabetic mesangial hypertrophy

Objective To explore the role of 12 - lipoxygenase (12 - LO) in the pathogenesis of diabetic renal mesangial cells (MC) hypertrophy and its related mechanisms. MethodsWT and 12-LO knockout mice were induced as type 1 diabetes to investigate the renal hypertrophy and expression of p21, p27 in glomeruli. The ratio of total protein to cell number was detected as cellular hypertrophy diagnosis to explore the role of 12-LO in hyperglycemia induced mesangial cellular hypertrophy. Real-time PCR and Western blotting were used to detect the changes of p21 as well as p27 induced by 12(S)-HETE which was 12 - LO metabolic product. Results12(S) - HETE promoted p21 gene expression (P＜0.05), increased p21 and p27 protein levels in MC (all P＜0.05), therefore induced cellular hypertrophy (P＜0.05). MC from 12-LO knockout mouse showed less hypertrophy and decreased expression of p21 and p27 compared with WT MC under high glucose condition (all P＜0.05). On the contrary, over - expression of 12 - LO significantly enhanced p21 and p27 protein expression in MC (P＜0.01). Compared to WT mice, 12-LO knockout mice showed less renal hypertrophy and decreased expression of p21 and p27 in glomeruli induced by hyperglycemia (all P＜0.05). Conclusion12-LO involves in the process of diabetic renal hypertrophy through regulating the expression of p21 and p27.     

胚肾发育过程中诱骗受体2表达与细胞衰老的关系

目的通过研究诱骗受体2(DcR2)在小鼠胚肾发育过程中的定位和表达,探讨DcR2在胚肾发育中与细胞衰老的关系。 方法分别选取胚龄为12.5 d、16.5 d、20.5 d和出生后8w小鼠的肾脏组织,使用过碘酸雪夫(PAS)染色观察肾组织形态,定量RT-PCR检测肾组织DcR2 mRNA表达水平,免疫组织化学染色观察DcR2的表达分布,免疫荧光共染检测DcR2与近端肾小管标志绒毛蛋白villin、远端肾小管标志水通道蛋白2(AQP-2)、衰老标志P16、胞核形态标志物核纤层蛋白B1(LaminB1)、增殖标志Ki-67和增殖细胞核抗原(PCNA)的共表达关系。 结果随着胚肾的发育,胚肾组织中DcR2 mRNA及蛋白表达逐渐增多,且明显高于成年肾脏;DcR2特异性表达于肾小管,且与villin共表达,但不与AQP-2共表达;DcR2阳性细胞高表达P16,却低表达LaminB1、Ki-67和PCNA。 结论DcR2特异性表达于胚肾近端肾小管细胞,且表达水平随胚龄增长而增多。此外,DcR2阳性细胞具有衰老相关表型,提示DcR2可能在胚肾发育过程中通过调控细胞衰老而具有重要作用。     

肾癌患者术后化疗联合DC-CIK免疫治疗临床疗效研究

目的评价肾癌患者术后化疗联合自体树突状细胞(DC)联合细胞因子诱导的杀伤(CIK)治疗的临床疗效和安全性。方法收集2007年1月至2010年7月在辽宁省肿瘤医院45例肾癌化疗联合DC-CIK治疗的患者(化疗联合DC-CIK治疗组)及同期对照30例单纯化疗的肾癌患者(单纯化疗组),比较两组患者临床疗效、不良反应以及生存差异,并对外周血淋巴细胞亚群和细胞因子水平进行检测,比较组间差异。结果化疗联合DC-CIK治疗组实体瘤近期缓解情况显著优于化疗组;与治疗前比较,化疗与DC-CIK细胞免疫联合治疗的患者外周血淋巴细胞亚群中CD3~+CD4~+CD8~+、CD3~+CD16~+CD56~+T细胞计数增加(P<0.05);化疗联合CIK治疗组患者的总生存时间(OS)为64个月,明显高于单纯化疗组的45个月(P<0.05)。治疗过程中患者均未出现发热和寒颤等相关不良反应。结论自体DC-CIK细胞回输在联合化疗的基础上治疗晚期肾癌更有生存优势,而且安全性及耐受性良好。