脓汁查抗酸阳性杆菌感染一例报道

患者，王丽莹，女，47岁，患者主诉，左侧乳房始终有一溃疡，并流脓汁，看过好多地方，用过好多抗菌素，始终未治愈。     

我院2000-2004年医院感染革兰阴性杆菌耐药性趋势的研究

[目的]了解2000年～2004年院内感染革兰阴性杆菌分布及其耐药性。[方法]主要使用MicroScan-4微生物鉴定及药敏仪对2000年1月～2004年12月引起院内感染革兰阴性杆菌进行鉴定及药物敏感试验，结果录入Whonet5．3软件进行分析、统计。[结果]5年间，革兰阴性杆菌所致医院感染中，大肠埃希菌比例最高，在32．8％～38．1％之间，阴沟肠杆菌、不动杆菌比例呈上升趋势。细菌的耐药率在逐年上升，其中阴沟肠杆菌和鲍曼不动杆菌，耐药性高于其它革兰阴性杆菌（P〈0．05），对第三代头孢菌素耐药率分别达到60％～80％、40％～70％。对亚胺培南耐药的菌株日益增多。[结论]细菌的耐药性逐渐增强，阴沟肠杆菌、鲍曼不动杆菌成为非常重要的医院感染病原菌，医务工作者要重视医院感染，加强耐药性监测，合理使用抗生素。     

Relationship between Mandarin speech reception thresholds and pure-tone thresholds in the geriatric population.

BACKGROUND/PURPOSE: In the geriatric population, the reliability of pure-tone threshold (PTT) is sometimes poorer than that in young adults because of various reasons. This study assessed the relationship between Mandarin speech reception thresholds (SRTs) and PTTs in the aged and developed SRT as a measure for corroborating PTT. METHODS: This prospective study enrolled 46 consecutive subjects over 60 years of age. The results of SRT and PTT were collected from one ear randomly selected from each subject. Simple linear and multiple regressions were used to determine the correlation and linear regression coefficients between SRTs and PTTs at various frequencies. RESULTS: In the simple regression analysis, the correlation coefficient was highest at 1000 Hz (r = 0.949) and 500 Hz (r = 0.922), followed by 250 Hz (r = 0.850) and 2000 Hz (r = 0.792). In the multiple regression model with SRT as the dependent variable and PTTs as predictor variables, the resultant multiple correlation coefficient R was 0.967, while R2 was 0.936. In this model, PTTs at the frequencies of 500 Hz and 1000 Hz contributed significantly to the variance in SRTs with p values of 0.029 and < 0.001, respectively. These results demonstrated that the Mandarin SRT is strongly associated with PTTs at the frequencies of 500 Hz and 1000 Hz. CONCLUSION: This study established the agreement between Mandarin SRTs and PTTs in the low tone area of speech frequencies in the geriatric population. In clinical settings, SRT test can be rapidly and easily performed and is relatively inexpensive. It is a vital indicator of the accuracy of PTT measurement.     

The Influence of Intramammary Lipopolysaccharide Infusion on Serum Ca,P, Vitamin D,Cytokines and Cortisol Concentrations in Lactating Sows

Ten multiparous lactating sows were used to investigate whether intramammary infusion of lipopolysaccharides (LPS; Escherichia coli 0111:B4; 2.0 μg/kg of body weight) would affect the circulating concentrations of Ca, P, 25‐hydroxyvitamin D (25‐OHD), tumour necrosis factor‐α (TNF‐α), interleukin‐6 (IL‐6) and cortisol. The sows were randomly allotted to either control group (control) or LPS‐treated group with five individuals per group and were infused with either physiological saline solution or LPS solution. The rectal temperature and udder quarter appearance were recorded at 0 (just before infusion), 1, 3, 7, 12 or 24 h after infusion. Blood samples were taken at 0, 1, 3, 7, 12 or 24 h after infusion. Before infusion, the rectal temperatures of all sows were below 39.2°C. At 3 and 7 h after infusion, the sows in the LPS group had a rectal temperature over 39.4°C. At 24 h after infusion, the rectal temperatures returned to pre‐infusion levels. Serum Ca and P concentrations in the LPS group decreased (P < 0.05) after LPS infusion compared with the control group at 1 h after infusion. No significant differences (P > 0.05) in the concentrations of 25‐OHD were observed between groups control and LPS at any sampling time. Increased (P < 0.01) concentrations of serum TNF‐α, IL‐6 and cortisol were observed in the LPS group compared with the control group at 3 and 7 h after infusion respectively. In conclusion, the elevation of serum concentrations of TNF‐α, IL‐6 and cortisol and the alterations of circulating concentrations of Ca and P following LPS infusion indicate that the immune system has been activated and immune activation may affect macromineral homeostatic regulation, which might have important implications for metabolic health of lactating sows. Lowered serum Ca and P following immune activation also shows a causative mechanism whereby immune activation increases the risk of secondary disorders such as mastitis‐metritis‐agalactia syndrome. However, immune activation did not affect circulating concentrations of vitamin D metabolites.     

参芪扶正注射液对淋巴细胞的作用

目的:观察参芪扶正注射液对淋巴细胞的作用.方法:用参芪扶正注射液处理Jurkat淋巴细胞,通过台盘兰染色计数和流式细胞计观察其对淋巴细胞的作用,用参芪处理过的淋巴细胞分别加入化疗药和肝癌细胞,观察两种细胞的反应.结果:参芪扶正注射液处理过的淋巴细胞,细胞增殖快,有较强的抵抗化疗药诱导凋亡的能力,杀伤肝癌细胞的能力增强.结论:参芪扶正注射液具有多方面的免疫调节作用.     

谁抢了我的维生素

肤色晦暗不一定是皮肤需要做美容，吃饭时咬到舌头也不一定就是馋肉，诸如此类的现象，也许都是维生素缺失引起的。 维生素是维持正常生命活动所必需的小分子有机化合物，它既不供给能量，也不构成组织成分。在体内不能合成或合成甚微，而且必须由食物供给。 尽管需要量很少，但绝对不可或缺，它对物质代谢起着重要的调节作用。[编者按]     

利用转录因子结合位点识别人类肿瘤特异性启动子研究

目的 研究应用计算机技术对人类肿瘤特异性启动子进行识别、预测。方法 通过收集肿瘤特异性启动子序列、转录因子结合位点序列、非肿瘤启动子序列3种数据集合，利用转录因子结合位点在不同序列集合中的密度求出各位点的对应密度比，确定识别特征，进行肿瘤特异性启动子的识别。结论 该方法具有较高的准确性，在保证对训练集合90％以上的识别率的情况下，对测试集合的识别率达到80％以上。     

HBV前C/C基因与绿色荧光蛋白基因融合表达载体的构建及在HEK293细胞中的表达

目的 :构建含HBV前C C基因与绿色荧光蛋白基因的融合表达载体 ,并在真核细胞中表达。方法 :用PCR法扩增含 1.3倍HBVayw型全基因组真核表达载体pHBV1.3的前C C基因片断 ,应用含绿色荧光蛋白基因的真核表达质粒构建融合表达载体 ,采用脂质体介导方法将其转染到HEK2 93细胞 ,并用荧光显微镜及ELISA法检测融合蛋白的表达。结果 :经PCR及酶切鉴定 ,证实成功构建了含HBV前C C基因的真核表达重组体pEGFP -HB VC ,显微镜下观察及ELISA法证实在HEK2 93细胞中表达了相应融合蛋白。结论 :构建的重组表达载体能在真核细胞中表达目的蛋白与GFP的双功能融合蛋白 ,适合于针对HBV前C C区的相关研究。     

大肠癌的外科治疗

1　大肠癌的治疗原则实践证明 ,大肠癌根治术后约 5 0 %未治愈 ,主要是术前发生远隔转移和术后复发所致。为消灭这些微小病灶而进行化疗 ,为预防术后复发进行放疗 ,生物治疗、中药治疗能提高机体免疫力从而提高疗效。大肠癌的生物学特性是对放化疗不敏感 ,所以多学科合作治疗肿