Expression of Cytochrome P450nor in Escherichia coli , Purification and Preparation of Polyclonal Antibodies

The term “cytochrome P450” was characterized of aunique 450 nm optical absorption peak of its carbon mon oxide bound form. Cytochrome P450s constitute a super gene family of heme containing proteins that are involvedin the metabolism of a variety o…     

湖北省以替诺福韦为初治抗逆转录病毒方案的HIV/AIDS患者肾功能情况及其影响因素分析

目的 评估替诺福韦（tenofovir,TDF）作为一线治疗方案的HIV/AIDS患者慢性肾病（chronic kidney disease,CKD）发生情况及其影响因素。方法 采用回顾性队列研究方法,收集分析TDF组和齐多夫定（zidovudine,AZT）组HIV/AIDS的人口学信息及临床检查资料,比较2组患者CKD的发生率和差异,多因素Cox比例风险模型分析TDF组患者CKD发生的影响因素。结果 共纳入432例HIV/AIDS患者,其中TDF组249例,AZT组193例,开始治疗时年龄中位数分别为32（26,50）、31（26,43）岁,传播途径主要以同性传播为主（分别为69.48%、82.90%）。TDF组与AZT组24个月CKD累积发生率分别是2.8%和0,差异有统计学意义（P<0.05）。各时间点肾小球滤过率（eGFR）值中,AZT组均高于TDF组（均P<0.01）。多因素Cox比例风险模型分析显示：TDF组患者中,女性（HR=57.46,95% CI：2.981~67.684）和基线eGFR异常（HR=4.75,95% CI：1.351~16.702）者发生CKD的风险更高。结论 TDF可以引起HIV/AIDS患者CKD的发生,但发生率较低,女性和基线eGFR异常者发生CKD的风险更高。在临床治疗过程中,要密切关注女性患者以及评估患者肾功能。     

瑞血新治疗肿瘤放化疗中白细胞减少临床研究

目的探讨瑞血新(rhG-CSF)治疗因放化疗而引起的白细胞减少的作用。方法应用瑞血新治疗65例恶性肿瘤在放、化疗引起的白细胞减少,并与应用一般升白细胞药物(中成药)治疗58例恶性肿瘤所致白细胞减少进行了对比观察。结果瑞血新和一般升白细胞药物均能使放、化疗白细胞下降的患者恢复至正常范围(4×109/L),但应用瑞血新组白细胞回升到正常的平均时间为3.5d,而一般对照组需要11.2d,瑞血新组最低值为(2.1×109/L),对照组最低值0.8×109/L(两者显著差异P＜0.01)。结果瑞血新与传统中药相比,能明显缩短白细胞回升到正常的时间,减轻白细胞下降的程度,有助于放化疗如期进行。     

加酶义齿清洁剂对口腔厌氧菌的杀菌效果实验

目的 :通过对清洁前后的义齿表面进行细菌培养 ,了解加酶义齿清洁剂对口腔厌氧菌的杀菌效果。方法 :从临床选取 8付正在使用的全口义齿 ,随机分为两组 ,其中一组浸泡在加酶义齿清洁剂中 ,另一组不做任何处理 ,再从义齿表面取菌 ,比较细菌培养结果。结果使用加酶义齿清洁剂组经菌落计数lg均值为 0 ;未使用加酶义齿清洁剂组菌落计数lg均值为 3 .4 4。统计学结果表明 :使用加酶义齿清洁剂组与未使用加酶义齿清洁剂组相比较 ,菌落计数有极显著性差异 (P <0 .0 0 1)。结论加酶义齿清洁剂对义齿表面的口腔厌氧菌具有杀灭作用     

童年期居住环境卫生对农村居民中老年期慢性病患病的影响研究

目的探讨童年期居住环境卫生对农村居民中老年期慢性病患病的影响, 并检验童年期健康状况在其中的中介效应。方法基于中国健康与养老追踪调查2018年最新调查和2014年生命历程调查共同访问的12 506名农村居民数据, 运用χ2检验、秩和检验、logistic回归分析模型、倾向评分加权法、负二项回归模型和KHB分析法进行分析。结果调整其他混杂因素后, 相比童年期居住环境卫生较好的农村居民, 童年居住环境卫生较差的中老年农村居民患哮喘风险提高23.7%(OR=1.237, 95%CI:1.060～1.445), 患肝脏疾病、肾脏疾病和消化系统疾病的风险增加16.4%(OR=1.164, 95%CI:1.006～1.347)、22.4%(OR=1.224, 95%CI:1.083～1.383)和19.6%(OR=1.196, 95%CI:1.103～1.296), 患血脂异常和心脏病的可能性上升了26.6%(OR=1.266, 95%CI:1.153～1.390)和13.6%(OR=1.136, 95%CI:1.031～1.253)。负二项回归模型分析结果显示, 童年居住环境卫生较差的中老年农村...     

社区糖尿病患者的周围血管病变患病率及其影响因素研究

目的 了解社区管理2型糖尿病患者的周围血管病变（PAD）流行现况及影响因素。方法 本研究基于中国糖尿病足预防模式项目基线调查,采用二阶段整群随机抽样的方法抽取武汉市江岸区和江苏省常熟市社区管理的2型糖尿病患者2 528名,进行问卷调查、体格检查及血糖检测。采用非条件多因素logistic模型进行影响因素分析。结果 糖尿病患者的PAD患病率为11.2%,<55、55~、65~、≥75岁年龄组的患病率分别为7.8%、6.0%、12.9%、22.5%。多因素分析结果显示,与<55岁年龄组糖尿病患者相比,55~、65~、≥75岁年龄组PAD患病的OR值分别为0.74（95%CI：0.43~1.28）、1.72（95%CI：1.05~2.81）、3.56（95%CI：2.07~6.11）;与小学及以下文化程度糖尿病患者相比,初中、高中/中专/技校、大专及以上文化程度PAD患病的OR值分别为1.37（95%CI：0.97~1.94）、2.48（95%CI：1.73~3.55）、1.99（95%CI：1.26~3.13）;现在吸烟（OR=1.49,95%CI：1.02~2.17）、现在饮酒（OR=0.45,95%CI：0.28~0.71）、餐后2 h血糖控制未达标（OR=1.72,95%CI：1.22~2.43）、心肌梗死或心绞痛史（OR=2.32,95%CI：1.50~3.61）均是糖尿病PAD的影响因素。结论 社区管理糖尿病患者的PAD患病率较高,有必要在基层医疗卫生机构开展PAD常规筛查,及早发现,早期预防,减少糖尿病足的发生。     

Human monocyte-derived hemangioma-like endothelial cells: evidence from an in vitro study

BACKGROUNDS: Hemangiomas are highly prevalent in newborns and infants and can lead to severe complications. However, the pathogenesis of hemangiomas is still unknown. This study was designed to examine the potential of human monocytes to differentiate into hemangioma endothelial cells. METHODS: Purified monocytes from adult human peripheral blood were cultured under a conditional culture environment supplemented with basic fibroblast growth factor and vascular endothelial growth factor. Cells cultured for 2 weeks were subjected to histological and immunochemical examinations in order to determine the expression of specific markers for hemangioma endothelial cells. RESULTS: Monocytes cultured for 2 weeks in angiogenic medium expressed human erythrocyte-type glucose transporter protein, FcgammaRII, and several other endothelial markers, all of which are deemed specific markers for hemangioma endothelial cells. However, neither CD133 nor alpha smooth muscle actin was detected in our monocyte culture. CONCLUSION: Our data suggested that monocytes are capable of differentiating into hemangioma endothelial cells under the angiogenic stimulation from microenvironment of proliferative hemangioma.     

Eye lrritation caused by Formaldehyde as an Indoor AIr Pollution—A Controlled Human Exposure Experiment

Obejective　The present study focuses on health assessment of wood based panels which are widely used in interior decoration practices over the recent years in China. Formaldehyde has been identified as chemical indicator of (IAO) and an indoor air pollutant. To test its health effects experiment was undertaken. Method　A small environmental test chamber (60/L) was used as the generator of emission gas from new panels, and was operating at a temperature of 22.7±0.6℃ and a humidity of 44.4±2.5 % with an air exchange rate of 1.0±0.15h-1. On the three experimental days the values of product loading in chamber were 4, 2 and 6 m2/m3, respectively. Eight people were selected randomly from the students and employees of Wuhan Health and Anti-epidemic Station as subjects, with an average age of 21.9±5.9 years, and a gender ratio of 1:1, and two of them were smokers (one male and one female). The subjects' eyes were exposed to formaldehyde through a pair of goggles. Each goggle had its flow inlet and outlet, and connected to chamber exhaust of emission gas and to an exhaust from the room. The exposure time was very short, just 5 minutes and the formaldehyde doses were at 1.65±0.01, 2.99±0.07 and 4.31±0.02 ppm. A 60-mm linear visual analogue rating scales was used to measure the intensity of sensory eye irritation and a video tape recorder was used to record eye blinking frequency. Results　The results demonstrated that tests of sensory eye irritation and eye blinking can be used for materials testing, and that a dose-effect as well as a time-variance of the effect can be measured. Conclusion　The tests showed that eye irritation was perceived at all of the three levels.     

平阳霉素治疗血管瘤、血管畸形后组织学观察

目的 :观察平阳霉素治疗血管瘤、血管畸形后引起的组织学变化。方法 :13例不同类型的血管病变 ,分1～ 3次注射平阳霉素 4～ 2 4mg ,多次注射者间隔 10～ 12d .在末次注射后 12～ 15d切除治疗后的病变组织进行组织学观察。结果 :注射 1次的标本中血管壁增厚 ,管腔变狭窄 ;注射 2次的标本中管腔闭塞 ,管壁失去正常结构 ;注射 3次的标本中管壁结构消失 ,组织纤维化。结论 :平阳霉素瘤腔内注射后可引起血管内膜变化 ,致使管腔闭塞 ,从而治愈血管瘤及血管畸形     

微生物农药的安全性研究

为了解微生物农药的安全性,通过对苏云金杆菌,增产菌,白僵菌,棉铃虫核型多角体病毒,茶小卷叶娥颗粒体病毒,苜蓿银纹夜蛾颗粒体病毒５种微生物农药的安全性评价,认为单纯微生物农药没有化学农药意义上的急,慢性毒性,所试微生物对哺乳动物不致病,无生殖毒性和致突变作用,是安全的。