CD10分子的研究进展及临床应用

CD10分子最初作为普通急性淋巴细胞白血病抗原(CALLA)被发现,是一个相对分子质量为90 000-110 000Ⅱ型单链穿膜糖蛋白.CD10分子广泛分布在各种组织,具有中性肽链内切酶(NEP)的功能,并且表达在不同的组织,其功能不尽相同.目前广泛应用于用血液系统肿瘤以及部分实体肿瘤的诊断和预后判断,还用于造血细胞分化发育研究和部分组织干细胞的研究.     

Atopic dermatitis patients carrying G allele in –1082 G/A IL-10 polymorphism are predisposed to higher serum concentration of IL-10

Introduction

Atopic dermatitis (AD) is a chronic skin inflammatory disease in which Th2-derived cytokines play an essential role. Aim of the study was to assess interleukin 4, 10 and 13 (IL-4, IL-10 and IL-13) serum concentrations in AD patients and to correlate the values with the occurrence of genotypes of selected polymorphisms in genes encoding these cytokines.

Material and methods

Seventy-six AD patients (mean age 11.4 years) and 60 healthy controls were enrolled in the study. Blood samples were analyzed for IL-4, IL-10 and IL-13 concentrations with ELISA assay and genotyping for –590C/T IL-4, –1082A/G IL-10 and –1055C/T IL-13 polymorphisms with PCR-RFLP.

Results

The obtained results revealed statistically higher serum concentration of IL-10 and IL-13 in AD patients when compared to healthy controls (10.30 pg/ml vs. 8.51 pg/ml for IL-10 and 5.67 pg/ml vs. 4.98 pg/ml for IL-13). There were no significant differences between AD patients and controls in regard to IL-4 serum level (5.10 pg/ml vs. 7.1 pg/ml). Analyzing the association between level of the examined cytokines and genotype polymorphisms –590 C/T for the IL-4 gene, –1082 A/G for the IL-10 gene and –1055 C/T for the IL-13 gene, we found a statistically higher IL-10 serum level among carriers of the G allele in the –1082 G/A IL-10 polymorphism both in AD and control groups. We did not find any significant differences between serum level of IL-4 and IL-13 in regard to genotype occurrence in examined polymorphisms: –590 C/T for the IL-4 gene and –1055 C/T for the IL-13 gene.

Conclusions

The obtained results confirm the genetic background of IL-10 synthesis in the Polish population.     

Moderate acute exercise (70% VO2 peak) induces TGF‐β, α‐amylase and IgA in saliva during recovery

Strenuous exercise promotes changes in salivary IgA and can be associated with a high incidence of upper respiratory tract Infections. However, moderate exercise enhances immune function. The effect of exercise on salivary IgA has been well studied, but its effect on other immunological parameters is poorly studied. Thus, this study determined the effect of moderate acute exercise on immunological salivary parameters, such as the levels of cytokines (TGF‐β and IL‐5), IgA, α‐amylase and total protein, over 24 h. Ten male adult subjects exercised for 60 min at an intensity of 70% VO₂ peak. Saliva samples were collected before (‘basal’) and 0, 12 and 24 h after an exercise session. The total salivary protein was lower after 12 and 24 h than immediately after exercise, whereas α‐amylase increased at 12 and 24 h after exercise compared with basal levels. The IgA concentration was increased at 24 h after exercise relative to immediately after exercise, and there was no difference in the IL‐5 while TGF‐β concentration increased in recovery. In conclusion, 70% VO₂ peak exercise does not induce changes immediately after exercise, but after 24 h, it produces an increase in salivary TGF‐β without changing IL‐5.     

血清miR-155联合组织PTEN检测对子宫内膜癌的诊断价值

目的 探讨血清微小RNA-155(miR-155)联合组织人第10号染色体缺失的磷酸酶及张力蛋白同源的基因(PTEN)检测对子宫内膜癌的诊断价值。方法 选取2015年9月至2018年6月邯郸市第一医院妇产科收治的子宫内膜癌51例、良性病变患者52例,采用荧光实时定量聚合酶链反应(Q-PCR)法检测研究对象血清中miR-155表达,免疫组织化学法检测各组子宫内膜组织中PTEN水平,并通过受试者工作特征(ROC)曲线评价miR-155、PTEN及二者联合对子宫内膜癌的诊断价值。结果 与良性病变组相比,子宫内膜癌组血清miR-155表达水平显著升高,差异有统计学意义(P<0.05);与良性病变组相比,子宫内膜癌组PTEN蛋白表达量显著降低,差异有统计学意义(P<0.05);ROC曲线显示,血清miR-155水平预测患者子宫内膜癌发生的曲线下面积为0.876,灵敏度为96.3%,特异度为94.2%;子宫内组织PTEN水平预测患者子宫内膜癌发生的曲线下面积为0.952,灵敏度为94.1%,特异性度为92.3%;二者联合检测诊断子宫内膜癌曲线下面积为0.991,灵敏度为99.2%,特异度为92.5%。结论 血清miR-155联合组织PTEN检测可作为子宫内膜癌的诊断指标。     

脂蛋白相关磷酸酶A2和炎性蛋白在诊断脑梗死后血管性痴呆及判断预后中的应用

目的探讨脂蛋白相关磷酸酶A2(Lp⁃PLA2)、炎性蛋白[超敏C反应蛋白(hs⁃CRP)、白介素⁃6(IL⁃6)]在脑梗死后血管性痴呆(VD)诊断及预后中的应用价值。方法选取2018年6月至2019年7月本院收治的75例单纯脑梗死患者(无VD组)及60例脑梗死后VD患者(VD组),比较两组临床资料,通过酶联免疫吸附法检测血清Lp⁃PLA2、IL⁃6水平,通过干式免疫层析技术检测血清hs⁃CRP水平,采用Logistic回归性分析影响脑梗死后VD发生的危险因素,采用受试者工作特征曲线(ROC)及曲线下面积(AUC)分析各指标诊断脑梗死后VD的价值,采用Pearson分析各指标与美国国立卫生研究院卒中量表(NIHSS)、日常生活活动能力量表评分(ADL)之间的相关性。结果VD组NIHSS、ADL评分及血清Lp⁃PLA2、hs⁃CRP、IL⁃6均较无VD组高(P<0.05);年龄、Lp⁃PLA2、hs⁃CRP、IL⁃6均为影响脑梗死后VD发生的相关危险因素(P<0.05);诊断脑梗死后VD的AUC IL⁃6>hs⁃CRP>Lp⁃PLA2;Lp⁃PLA2、hs⁃CRP和IL⁃6与NIHSS评分呈正相关(P<0.05),与ADL评分呈负相关(P<0.05)。结论Lp⁃PLA2、hs⁃CRP和IL⁃6在脑梗死后VD患者中高表达,且明显与患者预后评分相关,可辅助VD诊断及评估患者功能预后。     

ICD-10编码在睡眠障碍中的应用

在研究睡眠障碍的相关病案时发现,实现准确编码对于病案首页数据内涵有重要的意义,同时也方便医疗经费的控制与管理.编码员在进行编码时,应仔细研究相关病案,分析病因,结合病案的实际情况,依照国际疾病分类原则,区分器质性与非器质睡眠障碍,同时根据鉴别结果给予相应的疾病分类编码.     

Decreasing rates of natural deaths in a remote Australian Aboriginal community, 1996–2010

Objective : To examine the trends of all‐cause natural mortality for people aged 15 years and over in a remote Australian Aboriginal community between 1996 and 2010. Methods : The annual population in the community by gender and age group was obtained from the Australian Bureau of Statistics (ABS). All known deaths and all records of start of renal replacement therapy (RRT) for renal failure were recorded between 1996 and 2010. Five‐year aggregated death rates were calculated and the changes in natural mortality over the interval were evaluated. Mortality was compared with those of the Northern Territory (NT) Indigenous and non‐Indigenous people as a whole from 1998 to 2006. Results : Rates of natural deaths were lower in the third interval 2006–2010 relative to the first interval 1996–2000, with higher, but more rapidly falling rates for females than males. Reductions were prominent for both sexes in the 65 and over age groups, but death rates in females of earlier middle age also trended lower. The trends applied whether or not the starting of RRT was considered as a natural death. There was a similar trend in rates of natural death in the aggregate Indigenous population of NT. Conclusions: The downward trends probably reflect improvements in risk factor status since the 1960s, all‐of‐life health interventions, as well as better chronic disease management in the last two decades. The higher death rates in females than males in this community remain unexplained, but the rapid rate of decline of female death rates predicts that this gap will soon be minimised.     

Intestinal microbes direct CX3CR1+ cells to balance intestinal immunity

ABSTRACT

Intestinal damage driven by unrestricted immune responses against the intestinal microbiota can lead to the development of inflammatory diseases including inflammatory bowel disease. How such breakdown in tolerance occurs alongside the mechanisms to reinforce homeostasis with the microbiota are a focus of many studies. Our recent work demonstrates coordinated interactions between intact microbiota and CX₃CR1 expressing intestinal antigen presenting cells (APCs) that limits T helper 1 cell responses and promotes differentiation of regulatory T cells (Treg) against intestinal antigens including pathogens, soluble proteins and the microbiota itself. We find a microbial attachment to intestinal epithelial cells is necessary to support these anti-inflammatory immune functions. In this addendum, we discuss how our findings enhance understanding of microbiota-directed homeostatic functions of the intestinal immune system and implications of modulating this interaction in ameliorating inflammatory disease.