The Effect of Silica Dust Exposure on the Serum Clara Cell Protein 16 Levels in Chinese Workers

<正>Pneumoconiosis is a systemic occupational disease that commonly manifests as diffuse fibrosis of the lungs caused by long-term inhalation of silica dust in the production process. The development of pneumoconiosis is a chronic and progressive process; once it occurs, it is irreversible, and gradually develops into lung injury and respiratory failure, and can cause death regardless of exposure to dust. The     

Development of fluorometric reactive oxygen species assay for photosafety evaluation

The present investigation involved an attempt to develop a new reactive oxygen species (ROS) assay system for the photosafety assessment of chemicals using 1,3-diphenylisobenzofuran (DPBF), a fluorescent probe for monitoring ROS generation. The assay conditions of the fluorometric ROS (fROS) assay were optimized focusing on the solvent system, concentration of DPBF, fluorescent determination, screening run time and reproducibility. The photoreactivity of 21 phototoxic and 11 non-phototoxic compounds was assessed by fROS assay, and the obtained ROS data were compared with the results from a micellar ROS (mROS) assay and in vitro/in vivo phototoxicity information to confirm the predictive capacity of the fROS assay. In the optimized fROS assay, intra-day and inter-day precision levels (coefficient of variation) were found to be below 5%, and the Z'-factor for DPBF fluorescence quenching showed a large separation between positive and negative controls. Of all tested compounds, 3 false positive and 7 false negative predictions were observed in the fROS assay, and the negative predictivity for the fROS assay was found to be lower than that for the mROS assay. Although the fROS assay has some limitations, the procedures for it were highly simplified with a marked reduction in screening run time and one analytical sample for monitoring ROS generation from compounds. The fROS assay has the potential to become a new tool for photosafety assessment at an early stage of product development.     

沙眼衣原体和支原体所引起非淋菌性尿道炎和宫颈管炎的临床资料分析

目的 对76例临床症状不突出,容易被忽视的沙眼衣原体和支原体引起的非淋菌性尿道炎和宫颈管炎的临床资料进行分析.方法 设计调查表格,由有丰富临床经验的医生对病人进行调查和填写表格;沙眼衣原体实验室诊断采用英国CLEARVIEW试剂盒,支原体由液体培养基培养.采用淋球菌培养方法除外淋球菌感染.结果 男性尿道沙眼衣原体或支原体感染,表现为尿道口稀薄分泌物占74.4%(29/39).女性宫颈管沙眼衣原体或支原体感染,宫颈管口粘液脓性分泌物占64.9%(29/37).结论 沙眼衣原体或支原体引起的男性尿道感染,以尿道稀薄分泌物为特征;引起的女性宫颈管炎,以宫颈管口粘液脓性分泌物为特征.     

对STD健康教育处方认识的调查

目的 了解医务人员和性病患者对STD健康教育处方的认识。方法 190名医务人员和621名性病患者分别填写1份有关STD健康教育处方认识的问卷并将资料整理分析。结果 大多数医务人员和性病患者认为在性病门诊发放STD健康教育处方很有必要,但其中有35％的性病患者认为没有必要,因为他们不可能将其带出性病门诊。结论 从调查结果看,医务人员和性病患者对STD健康教育处方的态度是很积极的。     

The mixed 5-HT1A2A receptor drug FG5938 suppresses alcohol drinking while enhancing feeding in P rats

The neurotransmitter serotonin (5-HT) has long been implicated in the etiology of aberrant consumption of alcohol. Several compounds thought to possess a potential therapeutic value to counteract drinking have high affinities for 5-HT_1A and 5-HT_2A receptors in the brain. For example, amperoxide and FG5865 significantly reduce the volitional intake of alcohol, without altering food intake, both in rats genetically predisposed or chemically induced to drink alcohol. The present study was undertaken in the alcohol-preferring (P) rat to determine whether an amperozide-like drug. FG5938 (1-[4-(p-fluorophenyl)butyl]-4-(6-methyl-2-pyridinyl)-piperazine fumarate), exerts an action on the volitional drinking of alcohol as well as on the intakes of food and water. In 11 male P rats, the pattern of preference for different concentrations of alcohol was determined by an 11-day test for water vs. 3 to 30% alcohol solutions. After maximally preferred alcohol concentrations, i.e., 9 to 15%, had stabilized for 4 days, saline of FG5938 was injected subcutaneously at 1600 and 2200 h in a dose of 2.5, 5.0, or 10.0 mg/kg over 4 consecutive days. Following treatment, preference testing for the same concentrations of alcohol was continued for 5 additional days. FG5938 caused a significant suppression in alcohol drinking in terms of both absolute g/kg and proportion to total fluid intake. During its administration, FG5938 also enhanced the ingestion of food and water of the P animals significantly, with the largest intake occurring on the initial day, while body weights increased. After FG5938 injections, food and water intakes returned to predrug levels. The saline control vehicle had no significant effect on the intakes of alcohol, food, or water of the P rats. Overall, these results show that FG5938 acts to attenuate alcohol preference while simultaneously increasing the ingestion of food paradoxically. To our knowledge, this is the first known drug to possess this unique property. Finally, these findings support the view that a compound having affinities to both 5-HT_1A and 5-HT_2A receptors may be useful as a therapeutic agent in the treatment of alcoholism.     

寻常性银屑病患者表皮中DNA甲基化转移酶2和3a mRNA的表达

目的 检测寻常性银屑病患者表皮中DNA甲基化转移酶（DNMT2和DNMT3a）mRNA表达。方法 利用实时定量PCR技术检测2009年3月至2010年12月来自中国医学科学院皮肤病医院皮肤科及宜兴市人民医院皮肤科门诊的46例寻常性银屑病患者皮损和非皮损表皮以及来自中国医学科学院皮肤病医院皮肤外科的28例健康对照表皮中DNMT2和DNMT3a mRNA的表达。结果 在银屑病患者皮损、非皮损和对照组表皮DNMT2 mRNA表达水平（2-ΔΔCt值）分别是0.62 ± 0.02、0.36 ± 0.05和0.15 ± 0.11,皮损组明显高于非皮损组（t = 6.23,P < 0.01）,非皮损组明显高于对照组（t = 7.33,P < 0.01）;DNMT3a mRNA表达水平（2-ΔΔCt值）分别是0.85 ± 0.03、0.43 ± 0.04和0.18 ± 0.09,皮损组明显高于非皮损组（t = 5.66,P < 0.01）,非皮损组明显高于对照组（t = 8.62,P < 0.01）。结论 寻常性银屑病患者表皮DNMT2和DNMT3a mRNA均异常高表达。     

Single-dose and multiple-dose pharmacokinetics of zaltoprofen after oral administration in healthy Chinese volunteers

Zaltoprofen, a propionic acid derivative of non-steroidal anti-inflammatory drugs, has strong inhibitory effects on actue and chronic inflammation. A randomized, dose-escalating study was conducted to evaluate the pharma-cokinetics of single and multiple oral doses of zaltoprofen in 12 healthy Chinese volunteers. Pharmacokinetics was determined from serial blood samples obtained up to 24 h after administration of a single dose of zaltoprofen at 80, 160 or 240 mg and after multiple doses of zaltqorofen at 80 mg 3 times daily. The C max and AUC 0-24 of zaltoprofen were found to be proportional to drug dose. Zaltoprofen was rapidly absorbed (t max =1.46±0.83 h) and cleared (t 1/2 =4.96±2.97 h). Pharmacokinetic parameters after multiple doses were similar to those after single doses. Zaltoprofen was well tolerated. These results support a tid regimen of zaltoprofen for the management of acute and chronic inflammation.     

不同pH值对几种常见暗色致病真菌生长的影响

目的观察不同pH值对几种暗色致病真菌生长的影响。方法将裴氏着色真菌、紧密着色真菌、疣状瓶霉、卡氏支孢霉、皮炎外瓶霉、甄氏外瓶霉、假阿利什菌、链格孢和申克氏孢子丝菌接种在pH值为1～14的沙氏培养基上,观察其生长情况。结果几种着色真菌在pH值为5、6、7的沙氏培养基上均生长良好;疣状瓶霉、皮炎外瓶霉适宜生长的pH值范围较广,在pH值为4～12的培养基上均生长良好;在pH值为1、2、14的培养基上以上6种真菌均不生长。假阿利什菌在pH4～14的培养基上可生长,链格孢、申克氏孢子丝菌在pH3～14的培养基上可生长。结论 pH值对几种着色真菌、外瓶霉、假阿利什菌、链格孢和申克氏孢子丝菌的生长均有不同程度的影响。皮炎外瓶霉、疣状瓶霉较裴氏着色真菌、卡氏支孢霉适宜生长的pH值范围广。     

Preclinical anti-angiogenesis and anti-tumor activity of SIM010603, an oral,multi-targets receptor tyrosine kinases inhibitor

Objective  

SIM010603 is a structurally novel, oral, multi-targeted receptor tyrosine kinase inhibitor. This study investigated the anti-angiogenic and anti-tumor effects of SIM010603.     

江苏省流动妇女心理健康状况及影响因素分析

目的:了解居住地在江苏的流动妇女心理健康状况和影响心理健康的因素。方法:采用症状自评量表(SCL-90)和社会支持评定量表对1 178例流动人口进行调查,其中流动妇女729例。结果:①流动妇女总分、躯体化、焦虑、敌对、恐怖、精神病性因子的均分高于中国普通人群常模,在躯体化、恐怖、精神病性因子与中国常模差异有统计学意义(P0.001)。②流动妇女总分和各因子均分除偏执因子外均高于男性流动人口,躯体化、人际关系敏感、焦虑、恐怖和总分与男性流动人口差异有统计学意义(P0.05)。③按标准化偏回归系数显示影响流动妇女心理健康的因素为每天工作时间、是否签订劳动合同、客观支持、尚未找到工作、对生活状况满意程度、打零工和暂时不打算工作。结论:流动妇女存在一定程度的心理健康问题。