阿霉素磁性明胶微球的研究

报告了阿霉素磁性明胶微球（Ａｄｒ－ＭＧ－ｍｓ）的制备与性质，研究了超细氧化铁粒子的合成和磁性明胶微球（ＭＧ－ｍｓ）在狗体内的栓塞效果。阿霉素磁性明胶微球由２％阿霉素（Ａｄｒ）、６８％明胶和３０％的磁铁粒子组成，微球的平均粒径为２２μｍ。在体外实验中，药物释放速度证明微球有缓释的性质。磁铁粒子的平均粒径约为１０ｎｍ，磁性明胶微球与￣（９９ｍ）Ｔｃ标记磁性明胶微球通过导管分别输入狗的肝动脉内进行栓塞，照相和血管造影显示在未加外磁场时磁性明胶微球在左右肝叶分布几乎相等，而在１２００高斯的外磁场作用下，靶部位肝左叶的微球分布是肝右叶的２．２５倍，而甲状腺、脑、心脏的微球很微量，结果表明磁性明胶微球在外磁场作用下是一个很好的治疗肝癌的栓塞剂。     

晚期宫颈癌伴上尿路梗阻19例分析

目的:探讨宫颈癌伴上尿路梗阻的治疗方法。方法:19例宫颈癌伴输尿管梗阻患者,首诊9例,宫颈癌根治术后10例,肾功能不全者11例。膀胱镜下留置双J管9例,输尿管皮肤造瘘5例,经皮肾穿刺造瘘1例,输尿管膀胱吻合1例,放弃治疗3例。结果:3例放弃治疗者,2例于2月、4月后死于肾衰。留置双J管者6例,于9~24月死于肿瘤转移,6例输尿管及肾脏造瘘者,5例于9~18月死于肿瘤转移。所有积极治疗者,肾功能明显改善。结论:宫颈癌伴输尿管梗阻患者,首选膀胱镜下留置双J管引流,失败者,根据不同情况,制定适宜的治疗方案。     

Aspirin inhibits monocyte chemoattractant protein-1 and interleukin-8 expression in TNF-alpha stimulated human umbilical vein endothelial cells

Atherosclerosis and its complications such as stroke, myocardial infraction and peripheral vascular disease, remain the major causes of morbidity and mortality in the world. Studies have showed that chemokines and adhesion molecules are involved in causing atherosclerosis by promoting directed migration of inflammatory cells. Monocyte chemoattractant protein-1 (MCP-1) is one of the key factors critical for the initiating and developing of atherosclerotic lesions. IL-8, a CXC chemokine, stimulates neutrophil chemotaxis. Aspirin is the most common drug used to prevent the complications of atherosclerosis such as stroke and coronary heart disease. In this study, we found that aspirin inhibited TNF-alpha (10 ng/ml)-induced MCP-1 and IL-8 expression at the RNA and protein levels in human umbilical vein endothelial cells (HUVECs), monocyte adhesion and transmigration, and that its inhibitory effects were not due to decreased HUVEC viability as assessed by MTT test. Aspirin at the dose as low as 10 microg/ml significantly inhibited the release of TNF-stimulated MCP-1 by 29.1% (P = 0.008) and IL-8 by 26.9% (P = 0.0146) as compared to TNF-stimulated release. Antibodies pretreatment were likely to decrease the production of MCP-1 (P < 0.0001) and IL-8 (P < 0.0001). Furthermore, aspirin (10 microg/ml) inhibited U937 cell adhesion by a 13.4% (P = 0.0119) inhibition as compared to TNF-stimulated alone. Finally, at higher concentration, aspirin also inhibited U937 migration to HUVEC by 89.1% (P = 0.0475) as compared to TNF-stimulated alone. These results in our study suggest that aspirin inhibits TNF-alpha stimulated MCP-1 and IL-8 release in HUVECs, for its additional therapeutic effects of aspirin in causing atherosclerosis.     

Recurrent infections caused by cefotaxime- and ciprofloxacin-resistant Salmonella enterica serotype choleraesuis treated successfully with imipenem

We present a case of recurrent infection (infective spondilitis, psoas abscess, and bacteraemia) caused by a single strain of cefotaxime- and ciprofloxacin-resistant and bla(CMY-2)-containing Salmonella enterica serotype choleraesuis during a 4-month period in a patient with uremia. The patient was successfully treated with imipenem for 7 weeks. Our observation indicates that a carbapenem might be considered as a drug of choice for the treatment of infections caused by this emerging multi-resistant pathogen.     

叶绿酸对反式-7,8-二羟-9,10-环氧苯并芘抗细胞转化活性的影响

目的研究叶绿酸对反式-7,8-二羟-9,10-环氧苯并芘(反式-BPDE)诱发的SV40 large T抗原永生化的人支气管上皮细胞系(16HBE)恶性转化的抑制作用.方法在反式- BPDE诱导的细胞转化整个过程中,分别加入浓度为10、50和100 μmol/L的叶绿酸,应用刀豆凝集素(ConA)凝集实验、软琼脂集落形成实验和裸鼠成瘤实验进行细胞恶性度鉴定.结果细胞培养至25代,发现叶绿酸和反式-BPDE共处理组细胞与反式-BPDE单独处理组细胞相比,前者ConA凝集时间延长;叶绿酸和反式-BPDE共处理组细胞在软琼脂中集落形成率分别为7.4‰、11.4‰和14.4‰,明显低于反式-BPDE单独处理组(19.6‰),且有剂量反应关系;各处理组细胞均能在裸鼠体内成瘤,叶绿酸和BPDE共处理组在裸鼠体内生长的肿瘤体积分别为(0.43±0.13) cm3、(0.22±0.04) cm3、(0.10±0.06) cm3,明显小于BPDE单独处理组的(1.71±0.37)cm3,并有剂量依赖关系,肿瘤组织经病理学证实为低分化鳞状细胞癌.结论体外试验显示叶绿酸具有一定的抗细胞恶变能力.     

Lupus erythematosus (LE) cells in ascites: initial diagnosis of systemic lupus erythematosus by cytological examination: a case report

Systemic lupus erythematosus (SLE) is an autoimmune disease, involving multiple organs. Diverse manifestations may obscure the diagnosis and confuse our thinking process, especially when few clues are present at the beginning. Serositis is one of the various presentations, and the presence of lupus erythematosus (LE) cell in body fluid may be a hint for the final diagnosis of SLE. Herein, we present a young female patient diagnosed of SLE with initial presentation of lupus peritonitis. Finding of LE cell in ascites prompted us for immunologic survey. Diagnosis of SLE was confirmed with high titer of anti-nuclear antibody and antibody to double-stranded DNA. Cytologic examination of body fluid is mainly useful in detecting malignant cells, but high specificity of this marker aids in early diagnosis of SLE.     

Incidence trend of nasopharyngeal carcinoma from 1987 to 2011 in Sihui County,Guangdong Province,South China:an age-period-cohort analysis

Introduction:In the past several decades, declining incidences of nasopharyngeal carcinoma (NPC) have been observed in Chinese populations in Hong Kong, Taiwan, Los Angeles, and Singapore. A previous s...     

Correlation and prediction of trunk fat mass with four anthropometric indices in Chinese males

To increase our understanding of the relationships of trunk fat mass (FMtrunk) and four anthropometric indices in Chinese males, 1090 males aged 20-40 years were randomly recruited from the city of Changsha, China. Waist circumference (WC) and hip circumference (HC) were measured using standardized equipment, and three other anthropometric indices of BMI, waist:hip ratio (WHR) and conicity index (CoI) were calculated using weight, height, HC and WC. FMtrunk (in kg) was measured using a Hologic QDR 4500 W dual-energy X-ray absorptiometry scanner. There was an increasing trend of FMtrunk, %FMtrunk (percentage of FMtrunk) and BMI, WC, WHR, CoI in successively older age groups (e.g. the mean FMtrunk values were 4.63 (SD 2.58), 5.39 (SD 2.74), 5.93 (SD 2.82), 6.57 (SD 2.94) in four 5-year age groups, respectively). FMtrunk and %FMtrunk were significantly correlated with four anthropometric indices with the Pearson's correlation coefficients ranging from 0.25 to 0.86. Principal component analysis was performed to form three principal components that interpreted over 99.5% of the total variation of four related anthropometric indices in all age groups, with over 65% of the total variation accounted by principal component 1. Multiple regression analyses showed that three principal components explained a greater variance (R(2) 70.0-80.1%) in FMtrunk than did BMI or WC alone (R(2) 57.8-74.1%). The present results suggest that there is an increasing trend of FMtrunk and four anthropometric indices in successively older age groups; that age has important effects on the relationships of FMtrunk and studied anthropometric indices; and that the accuracy of predicting FMtrunk using four anthropometric indices is higher than using BMI or WC alone.