基于转录组学探讨滋肾清肝方改善2型糖尿病糖、脂代谢的作用机制

目的：基于网络药理学及转录组学探讨滋肾清肝方(ZSQGF)改善2型糖尿病(T2DM)模型大鼠糖、脂代谢的作用机制。方法：基于网络药理学分析ZSQGF与T2DM的差异基因,进行基因本体(GO)富集分析与京都基因与基因组百科全书(KEGG)通路富集分析,并通过分子对接分析对接能,验证成分与靶点结合。通过高脂喂养及注射链脲佐菌素的方法建立T2DM大鼠模型,并随机分为正常组、模型组、二甲双胍组(二甲双胍72 mg·kg^-1)和ZSQGF高、中、低剂量组(分别折合生药量4.8、2.4、1.2 g·kg^-1的药液);监测大鼠的生活状态;检测大鼠血清总胆固醇(TC)、总甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)、天冬氨酸氨基转移酶(AST)、丙氨酸氨基转移酶(ALT)含量;对肝脏组织进行苏木素-伊红(HE)染色和油红O染色;通过肝脏转录组学分析差异基因、进行GO与KEGG富集分析,绘制蛋白质-蛋白质相互作用(PPI)网络图筛选核心靶点;结合网络药理学与转录组学分析结果进行蛋白通路验证,通过蛋白免疫印迹法(Weste...     

Type 2A (IIH) von Willebrand disease is due to mutations that affect von Willebrand factor multimerization

Summary.  Background:  Type IIH von Willebrand disease was reported 20 years ago as a novel variant characterized by the loss of the largest multimers in plasma and platelets and absence of the typical triplet structure. Objectives and methods:  The propositus and his daughter have been reinvestigated and characterized at the molecular level. The identified mutations were expressed in COS-7 cells to evaluate the mechanism of this variant. Results and Discussion:  The propositus had normal von Willebrand factor (VWF):ristocetin cofactor activity (RCo) and high VWF antigen (VWF:Ag) values, with a low VWF:RCo/VWF:Ag ratio (0.51). No abnormalities were found in his daughter, except for the reduced triplet structure in plasma VWF and diminished ultralarge VWF (ULVWF) multimers in platelets. Three mutations were identified in the propositus: 604C>T (R202W), 4748G>A (R1583Q), and 2546G>A (C849Y). The amounts of secreted recombinant VWF (rVWF) were apparently increased for R202W (130%), R202W-R1583Q (131%), and R202W-R1583Q/WT (121%), reduced for C849Y (72%) and C849Y/WT (83%), and normal for R1583Q (107%) and R202W-R1583Q/C849Y (102%). In cell lysates, higher values were found in association with the C849Y mutation. A normal multimeric pattern was found in R1583Q rVWF, mainly dimers in R202W rVWF, and intermediate molecular weight multimers in C849Y rVWF. Hybrid R202W-R1583Q/WT and C849Y/WT rVWFs had a nearly normal multimeric pattern, whereas in hybrid R202W-R1583Q/C849Y rVWF there was a loss of large/intermediate multimers. Conclusions:  The propositus phenotype seems to be due to mutations R202W and C849Y, both affecting the VWF multimerization process and, for C849Y rVWF, intracellular survival. The absent triplet multimeric structure in the propositus and its reduction in his daughter appears to be related to the lack of ULVWF multimers, which mainly contribute to the formation of satellite bands.     

大型肿瘤医院放疗中心环境辐射剂量调查研究

目的 以我国西部地区最大型肿瘤医院放疗中心(四川省肿瘤医院)为代表,对其周边工作环境及工作人员辐射剂量水平进行调查和分析。方法 采用热释光剂量计对在中心工作的医生、护士、技术员、物理师、工程师和T作场所60Co治疗机、医用加速器、后装治疗机、X线模拟定位机、CT、MRI、头部γ刀、医生办公室)与外环境进行为期60d连续的累积剂量监测,并将所得结果和有关部门公布的调查结果进行比较分析。结果 该放疗中心室内工作环境平均剂量约为1.96μC·kg-1·月-1,室外环境剂量为1.6μC·kg-1·月-1。结论 由于该中心25年来严格按照环保和防护部门规范建设,所有机房外、办公区和候诊区的辐射水平均在完全安全范嗣内,无一超标。     

T HELPER 1/2 LYMPHOCYTE URINARY CYTOKINE PROFILES IN RESPONDING AND NONRESPONDING PATIENTS AFTER 1 AND 2 COURSES OF BACILLUS CALMETTE-GUERIN FOR SUPERFICIAL BLADDER CANCER

PURPOSE: Interleukin (IL)-2 and interferon-gamma are released during T helper 1 lymphocyte responses and IL-10 is released during T helper 2 lymphocyte responses. We have previously reported that a T helper 1 lymphocyte urinary cytokine profile is associated with a favorable prognosis after bacillus Calmette-Guerin (BCG) treatment. We evaluated the T helper 1/2 lymphocyte cytokine profiles during courses 1 and 2 of 6 weekly BCG instillations. MATERIALS AND METHODS: Urinary interferon-gamma, IL-2 and IL-10 were measured by enzyme-linked immunosorbent assay after each of 6 weekly instillations of 150 mg. BCG, Pasteur strain, in 19 patients with superficial stages Ta and T1 bladder cancer, and carcinoma in situ. The 11 patients who did not respond to course 1 were re-treated according to the same schedule and reevaluated. RESULTS: During course 1 interferon-gamma was higher than during course 2 (p <0.001), which was associated with nonrecurrence (p <0.001). In contrast, IL-2 cytokine was higher after course 2 (p <0.01), which was associated with a BCG response (p = 0.01). Interferon-gamma and IL-10 correlated during courses 1 and 2 (p = 0.04 and 0.0004, respectively). We distinguished groups 1-immediate T helper 1 lymphocyte profile consisting of responders to course 1 with high interferon-gamma, IL-2 and IL-10, 2-delayed T helper 1 lymphocyte profile consisting of responders to course 2 with early high IL-2 and 3-consisting of nonresponders to the 2 courses with low interferon-gamma, IL-2 and IL-10. CONCLUSIONS: A T helper 1 lymphocyte urinary cytokine profile was associated with a clinical response to BCG. A repeat BCG course induces a favorable immune response in a subset of patients, suggesting that maintenance therapy may be beneficial.     

Glucose tolerance and cognitive impairment in an elderly population

We investigated the associations between abnormal glucose tolerance and cognitive impairment in elderly subjects, taking into account some other known determinants of cognitive function. The study population consisted of community-living northern Finnish subjects aged 70 y or over (n=379, of whom were 141 men). Thirty-one percent of the men and women (n=43 for the men and n=75 for the women) scored 23 or less in the Mini Mental State Examination. A low level of basic education and high age were the most powerful predictors of impaired cognition. When adjusted for age, gender, educational level, presence of cardiovascular disease (or hypertension), use of alcohol, number of depressive symptoms and poor vision, abnormal glucose tolerance (including IGT) was also weakly associated with impaired cognitive function among these elderly subjects. Public Health (2001) 115, 197–200.     

THE EFFECT OF PREVIOUS ANTIBIOTIC THERAPY ON THE BACTERIOLOGY OF THE TONSILS IN CHILDREN

The bacteriology of the tonsillar surface and core in 30 children undergoing tonsillectomy was studied. Antibiotics taken in the six months before surgery were recorded. Haemophilus influenzae and Staphylococcus aureus were the commonest isolates; Streptococcus pyogenes was relatively rare. Eight children had received no antibiotics, the others had been prescribed 65 different courses of 13 different types. No relationship between the various antibiotic regimens prescribed and tonsillar bacteriology could be demonstrated, and it would appear that the tonsillar bacteriology at the time of tonsillectomy is not altered by antibiotics prescribed in the previous six months.     

基于体内代谢-药效学相关性分析的 中药复方药效物质基础研究

中药复方药效物质基础研究是制约中药现代化、国际化的关键问题之一。近年来许多专家学者对此进行了大量研究与实践,尤其是中药血清药物化学研究方法受到了广泛关注,并取得了比较显著的成绩。作者对近5年来中药血清药物化学研究进行了简要介绍,并在前人研究基础上提出基于体内代谢-药效学相关性分析的中药复方药效物质基础研究方法,通过阐明药效与体内药物成分及代谢产物的定性定量关系,以姜黄胶囊为例,来揭示中药复方的药效物质基础。希望能够为中药复方药效物质基础研究扩展思路。     

冠心病489例证型特点回顾性分析

根据山东中医药大学附院心内科近10年的489例住院病例回顾性调查结果,结合中医理论和古今文献系统地分析了冠心病心绞痛、心肌梗塞证治特点。489例冠心病中医证型多见于气阴两虚型(41%)、气虚血瘀(39%)、痰湿壅盛(36%)、痰瘀痹阻(17%)、气滞血瘀(11%)、心阳不振(5%)。其中401例心绞痛以气虚血瘀占42.39%,88例心肌梗塞以气阴两虚证占68.18%居各组证型首位。研究表明:热证在冠心病中占60%左右。由此提出清化瘀热应为治疗冠心病的重要法则之一。     

The intranuclear cleft of the intervertebral disk: magnetic resonance imaging

Three cadaver spines, 40 patients who were symptomatic for lumbar disk disease, and ten healthy subjects were examined by MR. T2 weighted spin echo images were used to evaluate the character of an intranuclear cleft. This cleft appears identical to annular tissue both on T2 weighted images and histologically. A 120 msec TE, 3 sec TR image was used to delimit the normal nucleus pulposus from the annulus. The incidence and age distribution of the cleft were calculated. An intranuclear cleft was present in all normal disks in both control and symptomatic subjects who were 30 years of age and older. If present in one disk, it was also present in 94% of the other disks in the same subject. This cleft represents a normal anatomic structure and appears to be a constant feature in subjects 30 years of age or older. Its absence, in the presence of an increased signal intensity within the disk, suggests a pathological process with a long T2 value, such as inflammation.     

松茸多糖两种测定方法的比较研究

目的 选择一种准确、稳定、简便的松茸多糖含量测定的方法.方法 对硫酸-蒽酮法和苯酚-硫酸法测定松茸子实体多糖的含量进行比较.结果 硫酸-蒽酮法和苯酚-硫酸法分别在1.2～12 mg·L-1(r=0.999 3)和1.5～15 mg·L-1(r=0.999 1)范围内呈线性关系;精密度实验RSD分别为0.13%和0.31%;硫酸-蒽酮法在3h内稳定,苯酚-硫酸法在6h内稳定;含量测定结果分别为4.28%和4.95%.结论 苯酚-硫酸法测定松茸多糖含量显色灵敏,颜色稳定,操作简便,可作为测定松茸多糖含量测定的方法.