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1.
吸烟对大学生24h动态血压的影响 总被引:1,自引:0,他引:1
目的 探讨吸烟对大学生血压的形响。 方法 随机选择日吸烟量≥ 10支男性大学生 34例为吸烟组 ,不吸烟者 31例为不吸烟组 ,行 2 4h动态血压监测。 结果 吸烟组 2 4h、日间及夜间平均血压均高于不吸烟组 ,日间血压差异有极显著意义 (P <0 .0 1) ;2 4h血压显示吸烟组血压波动范围高于不吸烟组 ,分为差异有显著性、差异无显著性以及部分时段血压不稳定三个阶段 ;吸烟组吸烟时心率显著快于对照组。 结论 吸烟可致正常血压男性大学生血压升高心率加快 ,应采取有效措施禁止学生吸烟 相似文献
2.
医学微生物学"项目-导师制"实验教学改革初探 总被引:1,自引:0,他引:1
目的:探讨"项目-导师制"实验教学改革效果及其在医学微生物学实验教学中应用价值.方法:采用"项目-导师制"法对2001级学生进行医学微生物学实验教学,以无记名问卷调查和专家评议方式了解实验教学效果,以现场操作了解学生实验技能,以相对标准化试卷综合测试学生成绩,并与2000级学生医学微生物学实验教学效果、实验技能、考试成绩进行回顾性和对比分析.结果:2001级和2000级学生实验教学效果不满意、满意、很满意率分别为0%(0/180)、25.00%(45/180)、75.00%(135/180)和55.38%(72/130)、34.62%(45/130)、10.00%(13/130),差异有显著性(P<0.01).实验技能考核及格、良好、优秀率分别为0%(0/180)、22.22%(40/180)、77.78%(140/180)和56.92%(74/130)、35.38%(46/130)、7.69%(10/130),差异有显著性(P<0.01).综合考试成绩不及格、及格、良好、优秀率分别为0%(0/180)、17.78%(32/180)、47.22%(85/180)、35.00%(63/180)和154%(2/130)、38.46%(50/130)、52.31%(68/130)、7.69%(10/130),差异有显著性(P<0.01).结论:"项目-导师制"实验教学是一种新型实验教学模式,可显著增强实验教学效果,帮助学生快速掌握实验技能,提高学生综合考试成绩,克服传统实验教学存在的一些弊端,具有应用推广价值. 相似文献
3.
本文记述四川省峨眉山蚋属Simulium蚋亚属Simulium一新种,以中国科学院院士胡经甫命名为经甫蚋S.(S.)jinfful sp.nov.该蚋与S.(S.)himalayense Purl,1930,S.(S.)taiwanicum Takaoka,1979.S.(S.)shanxlense Cai and An,2003,S.(S.)immortalls Cai and An,2003,S.(S.)chamlongi Takaoka and Suzuki,1984相似,但是,雌虫的生殖叉突具内突和外突,肛上板椭圆形,前腿基节、转节、股节棕黄色;生殖腹板板体短,其长约为顶端宽度的0.8倍,与上述蚋种明显不同。模式标本保存在北京军事医学科学院医学昆虫标本馆。 相似文献
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人面部蠕形螨感染致病及其防治 总被引:8,自引:0,他引:8
蠕形螨(demodex)寄生于人面部可引起人面部蠕形螨病(demodicidosis),对人的美容和生活造成影响。本文就人面部蠕形螨感染致病及其防治的研究予以综述,以求为临床诊断和治疗面部蠕形螨病提供依据。 相似文献
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《European journal of pharmaceutics and biopharmaceutics》2014,88(3):510-517
Formulating nanoparticles for delivery to the deep lung is complex and many techniques fail in terms of nanoparticle stability. Spray freeze drying (SFD) is suggested here for the production of inhalable nanocomposite microcarriers (NCM). Different nanostructures were prepared and characterized including polymeric and lipid nanoparticles. Nanoparticle suspensions were co-sprayed with a suitable cryoprotectant into a cooled, stainless steel spray tower, followed by freeze drying to form a dry powder while equivalent compositions were spray dried (SD) as controls. SFD-NCM possess larger specific surface areas (67–77 m2/g) and lower densities (0.02 g/cm3) than their corresponding SD-NCM. With the exception of NCM of lipid based nanocarriers, SFD produced NCM with a mass median aerodynamic diameter (MMAD) of 3.0 ± 0.5 μm and fine particle fraction (FPF ⩽ 5.2 μm) of 45 ± 1.6% with aerodynamic performances similar to SD-NCM. However, SFD was superior to SD in terms of maintaining the particle size of all the investigated polymeric and lipid nanocarriers following reconstitution (Sf/Si ratio for SFD ≈ 1 versus >1.5 for SD). The SFD into cooled air proved to be an efficient technique to prepare NCM for pulmonary delivery while maintaining the stability of the nanoparticles. 相似文献
9.
The treatment of advanced non-small cell lung cancer (NSCLC) may be changing, but the cisplatin-based doublet remains the foundation of treatment for the majority of patients with advanced NSCLC. In this respect, changes in practice to various aspects of cisplatin use, such as administration schedules and the choice of methods and frequency of monitoring for toxicities, have contributed to an incremental improvement in patient management and experience. Chemoresistance, however, limits the clinical utility of this drug in patients with advanced NSCLC. Better understanding of the molecular mechanisms of cisplatin resistance, identification of predictive markers and the development of newer, more effective and less toxic platinum agents is required. In addition to maximising potential benefits from advances in molecular biology and associated therapeutics, modification of existing cisplatin-based treatments can still lead to improvements in patient outcomes and experiences. 相似文献
10.
《Pancreatology》2022,22(1):74-82
ObjectivePost-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP) is the most common complication following ERCP and the mechanism is not fully understood. This study evaluated the changes in the inflammatory response, cellular apoptosis, and tight junction integrity in a rat model of pancreatitis to explore the underlying mechanism.MethodsPEP was induced in rats by retrograde biliopancreatic ductal infusion of contrast agents or saline. Pancreatic tissues were harvested and evaluated by histopathologic, immunohistochemical, immunofluorescence, and Western blot analyses. In addition, amylase and proinflammatory cytokines in plasma were quantified by ELISA assay.ResultsPEP rats developed more severe acute pancreatitis than the sham group after injection of the contrast agent or isotonic saline. PEP rats exhibited increased tissue damage, plasma amylase, proinflammatory cytokines, necrosis, inflammatory infiltrates, apoptosis, and tight junction disruption. At the molecular level, contrast agent and isotonic saline-injected PEP rats demonstrated elevated NF-κB p65 and STAT3 pathways activation, altered expression and activation of apoptosis-related proteins, and suppressed expression of tight junction molecules. However, the contrast agent concentration had no effect on these changes.ConclusionsIn models of acute pancreatitis induced using contrast agent and hydrostatic pressure, the contrast agent and high hydrostatic pressure easily induced the inflammatory response, apoptosis, and tight junction disruption. It is noteworthy that no significant difference in damaged pancreatic acinar cells was observed with different concentrations of the contrast agent. 相似文献