女用长效口服避孕药生产工人体检小结

对长效口服避孕药片剂生产及18甲基炔诺酮原料生产工人进行了制药前后的体检。结果制药工人中有头晕,乏力、嗜睡等神衰样症状达87.5%;恶心、食欲改变等消化道症状30.1%。但离岗休养后症状大部分可消失,生产18甲原料的女工月经改变率68%,提示有性激素影响.片剂与原料生产对甘油三酯的影响相反,可能与片剂中含长效雌激素有关。外周血淋巴细胞SCE 频率在18甲原料生产后显著升高,考虑与生产环境中接触各种有害物质有关.就体检所见提出了改善避孕药生产劳动保护的重要性.     

从过敏原检测与支气管舒张试验相关性看COPD与支气管哮喘的鉴别诊断

目的探讨过敏原检测与支气管舒张试验对COPD与支气管哮喘的鉴别诊断意义。方法随机抽取74例COPD患者作为观察组,再选取同期本院支气管哮喘患者74例作为对照组,均进行过敏原检测与支气管舒张试验。结果有多种过敏原的COPD患者当中舒张试验阳性率明显高于无过敏原的患者,且FEV1改善率、FEV1增加绝对值均高于没有过敏原的患者,差异有统计学意义(P<0.05)。观察组的舒张试验阳性、PEF指标明显高于对照组,其余各项指标均无统计学意义。结论过敏原检测与支气管舒张试验对COPD与支气管哮喘有重要的鉴别诊断价值。     

A preliminary 13-week oral toxicity study of ginger oil in male and female Wistar rats

Zingiber officinale Roscoe, ginger, is a major spice extensively used in traditional medicine. The toxicity profile of ginger oil was studied by subchronic oral administration for 13 weeks at doses of 100, 250, and 500 mg/kg per day to 6 groups of Wistar rats (5/sex per dose). Separate groups of rats (5/sex per group) received either paraffin oil (vehicle) or were untreated and served as comparative control groups. There was no mortality and no decrease in body weight or food consumption as well as selective organ weights during the study period. Administration of ginger oil to rats did not produce any treatment-related changes in hematological parameters, hepatic, renal functions, serum electrolytes, or in histopathology of selected organs. The major component of ginger oil was found to be zingiberene (31.08%), and initial studies indicated the presence of zingiberene in the serum after oral dosing. These results confirmed that ginger oil is not toxic to male and female rats following subchronic oral administrations of up to 500 mg/kg per day (no observed adverse effect level [NOAEL]).     

人工肱骨头置换治疗肱骨近端恶性骨肿瘤的护理

目的　探讨人工肱骨头置换治疗肱骨近端恶性骨肿瘤围手术期的护理及临床效果。方法　对 2 1例肱骨近端恶性骨肿瘤患者采用肿瘤广泛切除、人工肱骨头置换重建肩关节 ,术前重点施行心理护理、患肢肌力训练 ;术后做好观察病情 ,肩关节脱位、感染等并发症的预防 ,尤其功能锻炼 ,并对术侧肩关节的功能进行定期随访。结果　随访 6～ 4 8个月 ,平均 2 4 .5个月 ,肩可外展 5 5～ 80° ,平均 6 0°;前屈 4 0～ 6 0° ,平均 5 0° ;后伸 2 5°。 2 1例术后均无发生感染、肩关节脱位、肿瘤复发和其他护理并发症。结论　人工肱骨头置换是肱骨近端恶性骨肿瘤保肢术中较理想的方法 ,而围手术期的护理在保证手术成功及肩关节功能恢复中则起着重要作用     

锌对染氟大鼠生精细胞c-fos和c-jun蛋白表达的影响

目的:观察锌对染氟大鼠生精细胞c-fos、c-jun蛋白表达水平的影响.方法:选用4周龄雄性SD大鼠50只,随机分为对照组、染氟组、氟加低锌组、氟加中锌组、氟加高锌组,灌胃染毒6周后处死动物,采用氟离子选择电极法测定各组大鼠睾丸组织中氟的含量,用试剂盒检测睾丸组织中的乳酸脱氢酶(LDH)活力,做精于质量分析及睾丸组织病...     

锌对染氟大鼠生精细胞Bcl-2和Bax蛋白表达的影响

目的:探讨锌对氟致雄性大鼠生精细胞Bcl-2和Bax蛋白表达的影响.方法:选用4～5周龄雄性Wistar大鼠50只,随机分为对照组、染氟组、氟加低锌组、氟加中锌组和氟加高锌组,灌胃染毒6周后处死动物,采用放射免疫法检测血清睾酮含量,免疫组织化学法检测生精细胞中Bcl-2和Bax蛋白的表达水平,氟离子选择电极法测定睾丸氟...     

Nogo受体(N-20)在大鼠视神经损伤后视网膜的表达

观察Nogo受体(NgR)在Wistar大鼠视神经(ON)损伤后视网膜各层的表达变化及分布规律,为Nogo蛋白抑制中枢神经再生的理论提供形态学依据。本实验各组动物均采用眶内眼球后2 mm ON切断术,术后动物分别存活3 d和7 d后取视网膜固定、冰冻后做水平切片,用免疫组织化学的方法观察NgR的表达情况。结果显示:NgR在正常对照组视网膜内3层有表达;在切断ON后实验各组有强烈表达;各组在损伤ON和移植神经组织后存活3 d时也有强烈表达,至7 d时表达有所下降。以上结果表明:NgR在大鼠ON损伤后视网膜的表达位于节细胞层、神经纤维层和内网层;其表达程度与移植物的种类有关,并可随存活时间的延长而下降。     

阿卡波糖联合二甲双胍治疗2型糖尿病伴高血脂症疗效的回顾性研究

摘 要 目的：分析阿卡波糖联合二甲双胍治疗2型糖尿病伴高血脂症的疗效。方法: 采用回顾性研究方法,收集本中心全科门诊2型糖尿病伴高血脂症患者2 000例,其中采用阿卡波糖单药治疗1 050例为对照组,采用阿卡波糖联合二甲双胍治疗的950例为联合组。比较治疗3个月后两组疗效和药品不良反应;以及治疗前后两组血糖、血脂指标变化。结果: 联合组总有效率为94.83%,显著高于对照组的72.38%(P<0.05)。治疗后,两组患者各项血糖指标均有明显下降(P<0.05),且联合组均低于对照组(P<0.05)。治疗后联合组患者各项血脂指标均有显著改善(P<0.05),且均明显优于对照组(P<0.05)。两组药品反应发生率差异无统计学意义(P>0.05)。结论:阿卡波糖联合二甲双胍治疗2型糖尿病伴高脂血症可显著改善患者血糖水平和血脂水平,临床疗效值得肯定。     

Design considerations in the use of interdigitated microsensor electrode arrays (IMEs) for impedimetric characterization of biomimetic hydrogels

Microlithographically fabricated interdigitated microsensor electrodes (IMEs) were cleaned, surface activated, chemically functionalized (amine) and derivatized with an Acrloyl-PEG-NHS to receive a spun-applied monomer cocktail of UV polymerizable monomer. IMEs were 2050.5, 1550.5, 1050.5 and 0550.5 possessing lines and spaces that were 20, 15, 10, and 5 μm respectively; 5 mm line lengths and were 50 lines on each opposing bus. Bioactive hydrogels were synthesized from spun-applied and UV-crosslinked tetraethyleneglycol diacrylate (TEGDA) (crosslinker), 2-hydroxyethylmethacrylate (HEMA), polyethyleneglycol(200) monomethacrylate (PEGMA), N-[tris(hydroxymethyl)methyl]-acrylamide (HMMA) and poly(HEMA) (MW 60,000) (viscosity modifier) and 2,2-dimethoxy-2-phenylacetophenone (DMPA) (photoinitiator) to produce a 5 μm thick p(HEMA-co-PEGMA-co-HMMA) hydrogel membrane on the IMEs. Unmodified and hydrogel coated IMEs where characterized by AC electrical impedance spectroscopy using 50 mV p-t-p over the frequency range from 10 Hz to 100 kHz in aqueous PBS 7.4 buffer and in buffer containing 50 mM [Fe(CN)₆]^3-/4− solution at RT. Impedimetric responses were found to scale with the device geometric parameters. Equivalent circuit modeling revealed deviations from ideality at lower device dimensions suggesting an implication of the substrate surface charge on the double layer capacitance of the electrodes. Diffusion coefficients derived from the Warburg component are in accord with literature values.