A case of ruptured hepatocellular carcinoma originated from nonalcoholic steatohepatitis (NASH)

A 69-year-old woman visited our emergency room because of sudden right lower quadrant abdominal pain. Abdominal CT revealed a ruptured tumor in the anterior segment of the liver. Emergency laparotomy was selected due to interventional radiology was not available. As the patient was in shock status with massive intraabdominal hemorrhage, ligation of the right hepatic artery and suturing of the tumor bleeding point was carried out. Given the patient's history and liver biopsy report, we concluded as hepatocellular carcinoma derived form NASH. Anterior resection of the liver was performed after the patient became stable. About one year later, tumor was detected in the lateral segment and was removed. The patient is free of disease for two and a half years after the initial operation. Carcinogenesis of the hepatocellular carcinoma within NASH is not well described. We herein report a case of ruptured hepatocellular carcinoma originated from NASH.     

鼻咽癌细胞株中C-KIT表达和突变以及对Imatinib的反应性

背景与目的:我们先前报道了鼻咽癌组织中存在C-KIT表达和突变,但体外水平Imatinib是否对鼻咽癌细胞有增殖抑制作用及其机制尚不清楚。本研究评价了鼻咽癌细胞株中C-KIT表达和突变以及对Imatinib的反应性,探讨三者之间的相关性。方法:应用Western blot检测鼻咽癌细胞株CNE-1、CNE-2、Hone-1、C-666、SUNE-1、5-8F及鼻咽上皮细胞株NP-69的C-KIT表达情况,应用直接测序法检测CNE-1、CNE-2、Hone-1、C-666、SUNE-1、5-8F、NP-69的C-KIT基因突变情况,应用CCK-8试剂盒进行Imatinib对CNE-1、CNE-2、Hone-1、C-666、SUNE-1及5-8F的增殖抑制实验,应用Pearson相关分析和t检验分析鼻咽癌细胞株中C-KIT表达、突变和对Imatinib的反应性三者之间是否有相关性。结果:鼻咽癌CNE-1、CNE-2、Hone-1、C-666、SUNE-1及5-8F细胞株相对于鼻咽上皮细胞株NP-69存在C-KIT蛋白高表达。CNE-1、CNE-2、Hone-1、NP-69发现杂合IVS17+78T>C,C-666...     

Stratus optical coherence tomography study of filtering blebs after primary trabeculectomy with a fornix‐based conjunctival flap

Purpose: To investigate the relationship between filtering bleb function and Stratus optical coherence tomography (OCT) images. Methods: We studied 72 eyes of 65 consecutive patients who had a fornix‐based conjunctival flap in primary trabeculectomy with mitomycin C (MMC). Filtering blebs with various types of glaucoma were examined using Stratus OCT. Success rates were defined as intraocular pressure (IOP) ≤ 15 mmHg and IOP reduction ≥ 25% without medication or additional surgery. Success rates among classified groups were compared using Kaplan–Meier survival curves and the log‐rank test. Results: Blebs were classified into three different categories on the basis of the following Stratus OCT patterns: cystoid type (multiple cysts inside the bleb; 17 eyes), diffuse type (low to high reflective areas that were mixed inside the bleb; 31 eyes) and layer type (medium to high reflective layer inside the bleb; 24 eyes). Success rates in the cystoid‐, diffuse‐ and layer‐type blebs were 94%, 97% and 75% (P = 0.02), respectively. Conclusion: In trabeculectomy with MMC and a fornix‐based conjunctival flap, there is a significant association between the success rates and the postoperative Stratus OCT findings of filtering blebs.     

CD8~+NKT细胞表面活化性受体NKG2D在肺癌患者外周血中的表达及临床意义

背景与目的 NKT细胞活化性受体NKG2D及sMICA是近来肿瘤免疫研究领域的热点之一。本研究旨在观察肺癌患者外周血中CD8+NKT细胞受体NKG2D表达水平的变化,并对NKG2D及sMICA进行相关性分析,探讨它们在肺癌免疫监视中的作用及临床意义。方法选择82例初发未治疗的肺癌患者,采用流式细胞术检测外周血CD8+NKT细胞活化性受体NKG2D的表达,并以45例健康人作对照,采用酶联免疫吸附法检测肺癌患者血清中sMICA的表达,分析NKG2D与肺癌临床生物学特征的关系。结果肺癌患者外周血中CD8+NKT细胞表面活化性受体NKG2D水平均低于对照组,差异有统计学意义(P<0.001)。随TNM分期的增加,NKG2D的表达率逐渐降低。其中IV期肺癌患者NKG2D的表达明显低于I期-II期及III期患者该受体的表达,差异有统计学意义(P<0.001)。肺Ca患者中吸烟人群外周血中CD8+NKT细胞受体NKG2D的表达较非吸烟者低,差异有统计学意义(P<0.05)。CD8+NKT细胞受体NKG2D与sMICA呈负相关(r=-0.598,P<0.001)。结论肺癌患者CD8+NKT细胞表面受体NKG2D在外周血中低表...     

Tuberculosis Acquired Outside of Households, Rural Vietnam

Using population-based data from rural Vietnam, we assessed tuberculosis (TB) transmission within and outside of households. Eighty-three percent of persons with recent household TB were infected by different strains of Mycobacterium tuberculosis than were their household members. This result argues against the effectiveness of active TB case finding among household members.     

An examination of the association of selected toxic metals with total and central obesity indices: NHANES 99-02

It is conceivable that toxic metals contribute to obesity by influencing various aspects of metabolism, such as by substituting for essential micronutrients and vital metals, or by inducing oxidative stress. Deficiency of the essential metal zinc decreases adiposity in humans and rodent models, whereas deficiencies of chromium, copper, iron, and magnesium increases adiposity. This study utilized the NHANES 99-02 data to explore the association between waist circumference and body mass index with the body burdens of selected toxic metals (barium, cadmium, cobalt, cesium, molybdenum, lead, antimony, thallium, and tungsten). Some of the associations were significant direct relationships (barium and thallium), and some of the associations were significant inverse relationships (cadmium, cobalt, cesium, and lead). Molybdenum, antimony, and tungsten had mostly insignificant associations with waist circumference and body mass index. This is novel result for most of the toxic metals studied, and a surprising result for lead because high stored lead levels have been shown to correlate with higher rates of diabetes, and obesity may be a key risk factor for developing diabetes. These associations suggest the possibility that environmental exposure to metals may contribute to variations in human weight gain/loss. Future research, such as prospective studies rather than the cross-sectional studies presented here, is warranted to confirm these findings.     

纤维蛋白凝胶促进大鼠间充质干细胞的成骨分化

背景：纤维蛋白是一种天然的可生物降解、组织相容性好的高分子材料,是一种能促进细胞和外源性生长因子释放的载体,其中血纤维蛋白稳定因子ⅩⅢ已证明有利于未分化的间充质干细胞在高度交联的凝胶支架内迁移,并且促进这些细胞的增殖与分化能力。 目的：观察大鼠间充质干细胞在纤维蛋白凝胶内的行为。 方法：无菌条件下分离大鼠胎肢细胞获得间充质干细胞,取第3代细胞分别接种于0,5,10,20 g/L纤维蛋白凝胶内,用倒置相差显微镜和激光扫描共聚焦显微镜分析细胞在凝胶内的形态学变化; 酶标仪和Von Kossa染色分析碱性磷酸酶活性和钙盐沉积。 结果与结论：5 g/L低浓度纤维蛋白凝胶有利于细胞形态的发生,20 g/L高浓度凝胶有利于细胞的成骨分化。20 g/L纤维蛋白凝胶碱性磷酸酶活性高于对照组,10和20 g/L浓度纤维蛋白凝胶矿化结节出现在21至28 d,而对照组无矿化结节出现。提示大鼠间充质干细胞的形态与成骨分化依赖于纤维蛋白凝胶浓度,提示纤维蛋白凝胶有助于间充质干细胞的成骨分化。中国组织工程研究杂志出版内容重点：生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程全文链接：     

Uterine artery embolization followed by dilation and curettage within 24 hours compared with systemic methotrexate for cesarean scar pregnancy

Objective

To assess the efficacy of uterine artery embolization (UAE) combined with dilation and curettage (D&C) within 24 hours for the treatment of a cesarean scar pregnancy (CSP), compared with methotrexate and D&C.

Methods

A retrospective cohort study of 119 women with CSP was conducted at two tertiary hospitals in Guangzhou and Shenzhen, China, during 2009–2012. Twenty-six women received systemic methotrexate followed by D&C, and 93 women were treated with UAE followed by D&C within 24 hours.

Results

Mean blood loss was 261.0 ± 357.4 mL in the methotrexate group versus 14.1 ± 40.6 mL in the UAE group (P < 0.001). The time to resolution of the level of β-human chorionic gonadotropin was 40.5 ± 17.2 days versus 15.4 ± 7.7 days (P < 0.001), respectively. The duration of hospitalization was 14.6 ± 9.2 days versus 6.2 ± 3.7 days (P < 0.001), respectively. An additional intervention was needed in 9 (35%) women in the methotrexate group and in 5 (5%) in the UAE group (P < 0.001).

Conclusion

UAE combined with D&C within 24 hours was an effective uterine preservation treatment for CSP, and was associated with less blood loss and a shorter hospital stay than administration of methotrexate followed by D&C.     

Prevalence and risk factors of gallbladder polypoid lesions in Chinese petrochemical employees

AIM:To investigate the prevalence and risk factors of polypoid lesions of the gallbladder (PLGs) in petrochemical employees in Ningbo, Zhejiang Province, China. METHODS:All active and retired employees aged 20-90 years (n = 11098) of a refinery and chemical plant in eastern China were requested to participate in a health survey. The participants were subjected to interview, physical examination, laboratory assessments and ultrasonography. All the participants were invitedto have a physical examination after a face-to-face interview. Fasting blood samples were obtained from the antecubital vein, and the samples were used for the analysis of biochemical values. Abdominal ultrasonography was conducted. RESULTS:A total of 10461 (7331 men and 3130 women) current and former petrochemical employees attended for screening. The overall prevalence of postcholecystectomy, gallstones and PLGs was 0.9%, 5.2% and 7.4%, respectively. Compared with the increased prevalence of either gallstones or post-cholecystectomy in older persons, PLGs were more common in the middle-aged, peaking in those aged 40-59 years. Excluding the patients with gallstones, gallstones mixed with PLGs, or those who had undergone cholecystectomy, in the remaining 9828 participants, the prevalence of PLGs in men (8.9%) was significantly higher than that in women (5.5%, P < 0.001). The analyzed risk factors with increased OR for the development of PLGs were male gender (OR = 1.799, P < 0.001), age ≥ 30 years (OR = 2.699, P < 0.001) and hepatitis B surface antigen (HBsAg) positivity (OR = 1.374, P = 0.006). CONCLUSION:PLGs are not rare among Chinese petrochemical employees. Male gender, HBsAg positivity, and middle age are risk factors for developing PLGs.