肺癌患者同步放化疗期间症状群的调查研究

目的调查分析肺癌患者同步放化疗期间症状群的发生及分布特征。方法采用M.D安德森症状评估量表中文版(MDASI-C)对141例同步放化疗的肺癌患者进行调查。Spearman相关分析用于症状间相关性的分析;主成分分析用于提取患者的症状群。结果同步放化疗的肺癌患者疲乏症状强度得分最高,为(6.1±2.0)分,疲乏症状发生频率亦最高,为95.7%;MDASI-C各症状间均存在正相关(P<0.01),相关系数为0.13～0.74;主成分分析显示存在3个症状群:消化道症状群、情感症状群和病感症状群,3个症状群的内部信度Cronbach’sα系数分别为0.84、0.80和0.82。结论肺癌患者同步放化疗期间存在不同的症状群,认识该症状群有助于医护人员准确预见并为建立干预措施提供参考,以减轻肺癌患者的症状负担,提高其生活质量。     

脂蛋白相关磷脂酶A2酶活性水平及其基因多态性与冠心病的相关性研究

目的 建立脂蛋白相关磷脂酶A2(Lp-PLA2)基因A379V点突变等位基因特异-荧光定量PCR(TaqMan-ARMS)测定方法,探讨Lp-PLA2的酶活性水平及SNPs是否是冠心病的危险因素.方法 采用等位基因特异性PCR(ARMS)技术结合荧光定量PCR技术(TaqMan探针),通过对不同基因型引物3’端正配与错配扩增效率差别的比较,建立TaqMan-ARMS检测Lp-PLA2基因(PLA2G7)A379V点突变的方法,并对方法进行评价.应用TaqMan-ARMS PCR力法,检测395例冠心病患者(CAD组)和396例非冠心病对照者(NCAD组)PLA2G7的A379V基因频率,并对Lp-PLA2的酶活性水平、年龄、CHO、GLU 、TG、HDL、LDL、Hs-CRP、Lp(a)进行测定和调查,运用独立样本t检验、卡方检验、方差分析、logistic回归对数据进行分析.结果 CAD组的Lp-PLA2酶活性水平明显高于NCAD组(31.51 nmol·ml-1·min-1＞21.31 nmol·ml-1·min-1),差异有统计学意义(F=16.40,P＜0.001)；校正传统冠心病危险因子[CHO,TG,Hs-CRP,Lp(a),GLU]后,Lp-PLA2酶活性的最高四分化数与最低四分位数相比,CAD的比值比(OR)为7.50(95％ CI:2.34～24.05);在校正年龄、性别后,A379V点突变基因型VV的OR值为2.95(95％ CI:1.22～7.15,P＜0.05).结论 成功建立了基于TaqMan-ARMS PCR技术的定性检测A379V基因突变的方法；Lp-PLA2的酶活性水平在冠心病患者中显著升高,是冠心病的危险因子；A379V点突变基因型VV是冠心病的危险因子.     

胃粘膜相关淋巴组织淋巴瘤临床特点分析

目的总结胃粘膜相关淋巴组织淋巴瘤(MALT)临床特征、内镜特点及治疗,提高诊断率。方法收集我院2008年12月～2012年8月收治的6例MALT淋巴瘤患者临床资料,对其临床、内镜特点、病理资料和治疗方面进行回顾性分析。结果胃MALT淋巴瘤临床表现无明显特异性,误诊率高(3/6)。以上腹痛多见(3/6),内镜下以溃疡型多见,病理类型为B细胞型淋巴瘤,治疗多行手术治疗(4/6),配合抗HP、放化疗。结论早期需提高对胃MALT淋巴瘤的认识,降低误诊率。抗HP治疗发挥重要作用。     

Association between the NBS1 Glu185Gln polymorphism and breast cancer risk: a meta-analysis

Nijmegen breakage syndrome 1 (NBS1), a vital DNA repair protein in the homologous recombination repair pathway and a signal modifier in the intra-S phase checkpoint, plays a critical role in cellular response to DNA damages and the maintenance of genomic stability. The NBS1 Glu185Gln (NBS1 E185Q, NBS1 8360G>C, rs1805794) polymorphism has been indicated to be involved in the development of cancer, but results of previous individual studies on the association between NBS1 Glu185Gln polymorphism and breast cancer risk remain controversial and inconclusive. Our meta-analysis investigated this association for the first time by pooling the odds ratios with corresponding 95 % confidence intervals (95 % CIs) of all individual publications available to date. Overall, 14 separate studies with 6,642 cases and 7,138 controls were finally included into the present meta-analysis after a comprehensive literature search of the PubMed, Embase, Web of Science, and China National Knowledge Infrastructure databases up to October 21, 2012. Overall analysis and subgroup analyses by ethnicity and source of controls were performed. Meta-analysis of total studies showed that the NBS1 Glu185Gln variant carriers were not susceptible to breast cancer (OR_{Gln vs. Glu}?=?1.05, 95 % CI 0.80–1.39, P _OR?=?0.719; OR _{Gln/Gln vs. Glu/Glu}?=?0.82, 95 % CI 0.62–1.08, P _OR?=?0.154; OR _{Glu/Gln vs. Glu/Glu}?=?1.00, 95 % CI 0.90–1.13, P _OR?=?0.939; OR_{Gln/Gln + Glu/Gln vs. Glu/Glu}?=?0.96, 95 % CI 0.83–1.11, P _OR?=?0.551; OR_{Gln/Gln vs. Glu/Glu + Glu/Gln}?=?0.84, 95 % CI 0.67–1.05, P _OR?=?0.134). Similar results were observed in heterogeneity-adjusted meta-analysis of all studies. Furthermore, subgroup analyses by ethnicity and source of controls did not identify any appreciable relationship of the NBS1 Glu185Gln polymorphism with breast cancer susceptibility in any populations. Sensitivity analysis by sequentially omitting individual studies confirmed the stability and reliability of our results. Our meta-analysis of currently available data shows no association between the NBS1 Glu185Gln polymorphism and breast cancer risk.     

Characteristic Echocardiographic Manifestations of Behçet's Disease

The objective of this study was to determine the characteristic echocardiographic manifestations of Behçet's disease. Ninety-seven Behçet's patients admitted to our hospital from January 2002 to December 2016 were retrospectively analyzed. There were 63 patients (64.9%) with cardiac involvement; these included 47 men (74.6%) and 16 women (25.4%). Of these 63 patients, most (74.6%) exhibited valvular lesions, especially aortic regurgitation. The primary characteristic manifestations of valves were cusp prolapse with aneurysmal changes, vegetation-like lesions and echo-free spaces within the annulus. Second (30.0%) were aortic lesions, including aortic dilation or aneurysm formation, aortic pseudoaneurysm and coronary sinus aneurysm. Other manifestations, such as cardiac thrombosis, coronary arterial pseudoaneurysm, pulmonary aneurysm and pericardial effusion, were rare. Cardiac involvement is not uncommon in Behçet's patients, especially in males, and it is characterized by valvular disease, especially aortic regurgitation. The diagnosis of Behçet's disease should be considered when evaluating patients with these characteristic echocardiographic manifestations.     

Purification and identification of a polysaccharide from medicinal mushroom Amauroderma rude with immunomodulatory activity and inhibitory effect on tumor growth

Medicinal mushrooms in recent years have been the subject of many experiments searching for anticancer properties. We previously screened thirteen mushrooms for their potential in inhibiting tumor growth, and found that the water extract of Amauroderma rude exerted the highest activity. Previous studies have shown that the polysaccharides contained in the water extract were responsible for the anticancer properties. This study was designed to explore the potential effects of the polysaccharides on immune regulation and tumor growth. Using the crude Amauroderma rude extract, in vitro experiments showed that the capacities of spleen lymphocytes, macrophages, and natural killer cells were all increased. In vivo experiments showed that the extract increased macrophage metabolism, lymphocyte proliferation, and antibody production. In addition, the partially purified product stimulated the secretion of cytokines in vitro, and in vivo. Overall, the extract decreased tumor growth rates. Lastly, the active compound was purified and identified as polysaccharide F212. Most importantly, the purified polysaccharide had the highest activity in increasing lymphocyte proliferation. In summary, this molecule may serve as a lead compound for drug development.     

Effects of Ions on Insulin Aggregation Status and Formation of Insulin Fibrils

<正>It is crucial that maintain the insulin in solution in the monomer state to guarantee its physiological activity.Therefore,it is necessary to find the related ions which are able to promote depolymerization of insulin hexamer,while inhibition of the formation of insulin β-amyloid fibrils.The research on these ions can be a clue to help to improve the bioavailability of insulin formulations and be references for the diagnosis,