阿维A对缺氧培养的HaCaT细胞体外增殖和缺氧诱导因子1α及血管内皮生长因子表达的影响

目的 通过阿维A作用于缺氧培养的HaCaT细胞,初步探讨阿维A治疗银屑病的可能机制.方法 将浓度为10-5、10-6、10-7、10-8mol/L的阿维A分别作用于HaCaT细胞,用CCK-8法检测缺氧培养12、24、36h对HaCaT细胞体外增殖的影响.反转录PCR和Western印迹检测不同浓度阿维A对缺氧培养24 h的HaCaT细胞HIF-1α、血管内皮生长因子(VEGF)蛋白及mRNA表达的影响.结果 阿维A 10-8、10-7、10-6、10-5 mol/L作用24 h,HaCaT细胞体外增殖抑制率分别为(13.31±1.15)％、(21.86±5.31)％、(32.05±2.99)％、(37.28±3.21)％,且随着缺氧培养时间延长和阿维A浓度增加,对HaCaT细胞体外增殖的抑制作用逐渐增强.当阿维A浓度为10-5mol/L时,HIF-1α蛋白的表达由1.196±0.088降至0.319±0.180(P＜ 0.05),而HIF-1α mRNA表达水平无明显下降;VEGF mRNA的表达由1.108±0.073降至0.442±0.090(P＜ 0.05),VEGF蛋白的表达则由1.174±0.186降至0.216±0.066(P＜ 0.05).结论 阿维A可抑制缺氧培养的HaCaT细胞体外增殖,并在蛋白水平下调HIF-1α及VEGF的表达,在mRNA水平下调VEGF的表达.     

芳维A酸氨丁三醇对HaCaT细胞分化的影响

目的观察芳维A酸氨丁三醇作用于无血清培养的HaCaT细胞后,细胞内分化相关基因TGase1表达的变化,探讨其剂量-时间曲线,并比较芳维A酸氨丁三醇与依曲替酸对HaCaT分化的影响。方法将不同浓度的芳维A酸氨丁三醇和依曲替酸(0.001～1.0μm/L)分别加入无血清培养的HaCaT细胞培养液中,在添加芳维A酸氨丁三醇6h、12h和24h后分别回收总RNA,逆转录PCR(RT-PCR)法检测HaCaT细胞分化的特异性标记基因TGase1 mRNA的表达情况;芳维A酸氨丁三醇和依曲替酸分别在孵育24h后回收总RNA,用RT-PCR法检测TGase1 mRNA的表达,比较这两种药物对HaCaT细胞分化的差异。结果0.001～1.0μm/L浓度的芳维A酸氨丁三醇作用于HaCaT细胞6h、12h和24h后能显著促进HaCaT细胞内分化基因TGase1mRNA表达,且呈剂量和时间依赖性(P<0.05)。芳维A酸氨丁三醇及依曲替酸都可促进TGase1 mRNA表达,且TGase1mRNA的表达呈剂量依赖性,这两种药物的剂量曲线非常相似,其促进TGase1 mRNA表达程度比较,差异无显著性意义(P>0.05)。结论芳维A酸氨丁三醇能显著促进HaCaT细胞内分化基因TGase1 mRNA的表达,且呈时间和剂量依赖性,其促进HaCaT细胞分化的作用与依曲替酸的效果类同。     

葡萄籽提取物原花青素对UVA照射HaCaT细胞表达AQP3、Caspase-14和BH mRNA的影响

目的通过研究UVA照射前后及不同浓度葡萄籽提取物原花青素(grape-seed proanthocyanins extract,GSPE)干预的HaCaT细胞表达水通道蛋白3(AQP3)、半胱氨酸蛋白酶14(Caspase-14)和博来霉素水解酶(BH) mRNA的变化,探索GSPE是否能够修复长波紫外线引起的皮肤屏障损伤。方法实验分为五个组:空白对照组、单纯光照组(选取UVA的能量密度为25 J/cm~2)、照光联合不同浓度GSPE干预组(10、50、100μg/mL),采用RT-PCR法分别检测各组AQP3、Caspase-14和BH mRNA的表达量。结果 25 J/cm~2的UVA可以提高AQP3 mRNA表达量。GSPE药物浓度大于10μg/mL时,随药物浓度增加,可以逐渐降低光照后高表达的基因水平,并呈浓度依赖性。UVA可下调BH和Caspase-14 mRNA表达量,而GSPE可以提高光照后降低的基因表达量,且呈浓度依赖性,逐渐使其恢复正常。结论合适浓度的GSPE可以调节UVA对HaCaT细胞AQP3、Caspase-14和BH mRNA表达的影响,并使其趋于正常,推测其具有修复长波紫外线引起的皮肤屏障功能损伤的作用。     

地塞米松对HaCaT细胞糖皮质激素受体α表达的影响

目的:探讨糖皮质激素(GC)对角质形成细胞的糖皮质激素受体α(GRα)表达的影响.方法:采用反转录(RT)PCR和Western blotting,观察在不同浓度及不同时间的地塞米松作用下,培养的人角质形成细胞株(HaCaT细胞)GRα mRNA和蛋白质的表达情况.结果:地塞米松可下调HaCaT细胞GRα的表达,作用呈时间依赖性.结论:Gc对HaCaT细胞GRα的表达呈时间依赖性下调,可以部分解释持续外用GC制剂皮肤耐受现象以及对GC治疗的抵抗.     

阿维A对P物质诱导的HaCaT细胞NF-κB表达的影响

目的:明确阿维A对HaCaT细胞NF-κB表达的影响。方法:细胞共分5组:对照组、单纯P物质刺激组、P物质+小剂量阿维A组、P物质+中剂量阿维A组、P物质+大剂量阿维A组。应用免疫细胞化学法、Western-blot和RT-PCR法检测各组HaCaT细胞中NF-κB阳性细胞表达率、细胞蛋白和基因表达的变化。结果:单纯P物质刺激组较对照组阳性细胞表达率、细胞蛋白、mRNA表达均增强。各阿维A剂量组较P物质组阳性细胞表达率、蛋白和mRNA表达均降低(P0.05或P0.01)。结论:阿维A对人角质形成细胞NF-κB的调控是其治疗皮肤病的作用途径之一。     

阿维A对HaCaT细胞体外凋亡和胰岛素样生长因子结合蛋白7及血管内皮生长因子表达的影响

目的 探讨阿维A对HaCaT细胞体外凋亡和胰岛素样生长因子结合蛋白7（IGFBP7）及血管内皮生长因子（VEGF）表达的影响。 方法 将10-5、10-6、10-7、10-8 mol/L的阿维A分别作用于HaCaT细胞24、48、72 h后,采用CCK8法检测细胞增殖情况;流式细胞仪检测阿维A对HaCaT细胞凋亡率的影响;Western印迹和RT-PCR法检测阿维A对HaCaT细胞IGFBP7、VEGF蛋白及其mRNA表达的影响。 结果 10-8 mol/L阿维A处理HaCaT细胞48 h时表现出对细胞增殖的抑制作用,随着时间延长和药物浓度升高,抗增殖作用亦增强,当药物浓度增加到10-5 mol/L时,48 h和72 h的抑制率分别为39.94% ± 2.27%和49.77% ± 1.87%。与对照组相比,10-5 mol/L阿维A作用48 h后,凋亡率由1.803% ± 0.313%（对照组）上升至7.617% ± 0.767%（阿维A组）（P ＜ 0.05）,IGFBP7的表达由0.436 ± 0.013上升至0.939 ± 0.040（P ＜ 0.05）,IGFBP7 mRNA的表达由0.190 ± 0.056上升至0.872 ± 0.079（P ＜ 0.05）,VEGF的表达由0.798 ± 0.036下降至0.213 ± 0.032（P ＜ 0.05）,VEGF mRNA的表达由0.933 ± 0.054下降至0.274 ± 0.041（P ＜ 0.05）。 结论 阿维A可促进HaCaT细胞的体外凋亡,并可在蛋白及mRNA水平上调IGFBP7及下调VEGF的表达。     

复方甘草酸苷对HaCaT细胞表达AQP3的影响

目的 观察复方甘草酸苷(compound glycyrrhizin,CG)对HaCaT细胞表达水通道蛋白3(aquaporin3,AQP3)的影响.方法 不同浓度CG处理人角质形成细胞株HaCaT,MTT法检测CG对HaCaT细胞的增殖抑制作用,蛋白质印迹法(Western blotting method)分析CG处理后的HaCat细胞的AQP3表达.结果 低浓度(31.25～62.5μL/mL)CG对HaCaT细胞生长没有明显影响,而125μL/mLCG则对HaCaT细胞的生长产生低毒,但AQP3的表达明显高于正常对照组.结论 浓度(62.5～125)μL/mLCG可促进HaCaT细胞表达AQP3,而自125μL/mL开始出现细胞毒性,但此时AQP3表达至最高峰.     

地塞米松及甲氨蝶呤上调HaCaT细胞结合珠蛋白的表达

目的:探讨地塞米松及甲氨蝶呤对人角质形成细胞系HaCaT细胞合成结合珠蛋白(Hp)的影响。方法:采用RT-PCR方法检测Hp mRNA表达水平,ELISA方法检测Hp浓度。结果:地塞米松或甲氨蝶呤刺激HaCaT24h后,HaCaT细胞表达Hp增加;但较短刺激时间或较低刺激浓度时,HaCaT细胞表达Hp水平无明显变化。结论:地塞米松及甲氨蝶呤能够上调HaCaT细胞Hp的合成,这种作用具有时间依赖性及剂量依赖性的趋势。     

芳维A酸氨丁三醇和阿维A酸对HaCaT细胞维A酸受体表达的影响

目的：研究角质形成细胞维A酸受体的基础表达,及芳维A酸氨丁三醇（FY-10）和阿维A酸（acitretin）对角质形成细胞维A酸受体转录水平的影响。方法：以体外培养的角质形成细胞株Ha-CaT细胞为对象,不同浓度的FY-10或acitretin处理不同时间后,用RT-PCR测定各处理组RARα、RARβ、RARγ mRNA水平。结果：HaCaT细胞中RARγ表达最高,RARβ表达量最低;不同浓度的FY-10及acitretin对HaCaT细胞RARα、RARβ、RARγ转录水平无影响,亦不存在时间依赖性。结论：角质形成细胞HaCaT均表达RARα、RARβ、RARγ,且此三种受体的转录水平不受芳维A酸氨丁三醇及阿维A酸影响。     

综合疗法治疗复发性念珠菌性包皮龟头炎

目的探讨口服氟康唑胶囊、外用曲安奈德益康唑乳膏联合包皮环切术防治复发性念珠菌包皮龟头炎的疗效。方法采用随机分组法,治疗组(46例)给予氟康唑胶囊200mg,1次/d,连服3d,外用曲安奈德益康唑乳膏,早、晚各1次,2周为1个疗程,炎症控制后行包皮环切术。对照组(40例)给予氟康唑胶囊连服6d,曲安奈德益康唑乳膏外用2周。治疗后2周及2,4和6个月时随访。结果 2周后,两组痊愈率分别为89.13%和85.00%,差异无统计学意义(P>0.05)。两组有效率分别为100.00%和95.00%,差异无统计学意义(P>0.05)。2,4,6个月治疗组复发率分别为4.88%,9.76%和9.76%,对照组复发率分别为23.53%,38.24%和50.00%,两组比较差异均有统计学意义(P均<0.05)。结论综合疗法治疗复发性念珠菌包皮龟头炎安全有效,并能有效减少复发。     

Effect of photochemotherapy on the cardiovascular system

The effect of PUVA therapy on the cardiovascular system was studied in 2 groups of patients. The first group consisted of 9 otherwise healthy patients, who were treated without airconditioning. The second group was formed by 15 otherwise healthy psoriasis patients, who were treated with photochemotherapy, using airconditioning. In both groups the cabinet-skin and rectal temperature rose significantly. The most marked finding however was the rise in heart rate. By applying airconditioning, significantly smaller increases in the measured parameters occurred. In none of the patients changes in the electrocardiograms were observed. The effects on the cardiovascular system can evidently be limited by applying airconditioning and by keeping the time of light exposure as short as possible.     

Effect of environmental pollutants on the spermatogram

Increasing environmental exposure to harmful substances as a result of industry has led to an enhanced uptake of chemicals by means of food, water and inhalation. Therefore, the danger of damage of the male reproductive potential cannot be excluded. This assumption is supported by reports from the USA indicating a tendency towards a decrease in the number of spermatozoa in fertile men within the last 50 years. A similar tendency has been shown by investigations on the fertility potential in other industrial countries (Australia, Sweden, France). In Germany, however, so far there is no evidence indicating decrease in the quality of semen in fertile men. The influence of heavy metals, herbicides and pesticides on male fertility is well known. Chlorinated hydrocarbon compounds have aroused particular interest within recent years. Since there are only a few investigations demonstrating the impairment of male fertility by environmental pollutants, it is time to focus our efforts on studying the problem of environmental hazards regarding male fertility from an experimental, clinical and epidemiological viewpoint in order to prevent irreparable damage to mankind.     

生精散治疗特发性弱精子症96例疗效的临床观察

目的:观察生精散治疗特发性弱精子症患者的疗效.方法:采用自身前后对照的方法,对山东中医药大学第二附属医院生殖医学科2011年3月～2011年11月96例特发性弱精子症病例,服用生精散(1袋,3次/d)治疗8周.以精子密度和a、b级精子及精子活动率(a+b+c)为指标,评价生精散的疗效.结果:服用生精散病例较治疗前精液量,精子浓度和a、b级精子及精子活动率(a+b+c)均显著升高(P＜0.05).结论:生精散对特发性弱精子症有明显疗效,并未见不良反应.     

Effect of L-dopa on the seborrhoea of Parkinsonism

By studying the sebum excretion rate in patients with Parkinsonism before and during treatment with L-dopa we have shown that L-dopa reduces sebum excretion if seborrhoea is initially present, but has no effect on normal sebum excretion rates. The seborrhoea of Parkinsonism may be due to increased production of melanocyte-stimulating hormone, and our finding may have therapeutic implications in Parkinsonism and breast cancer.     

Effect of heliotherapy on the cost of psoriasis

A 2-year trial was conducted to evaluate the cost-effectiveness of heliotherapy for psoriasis. The course and cost of psoriasis of 46 Finnish patients were first closely monitored for 1 year, then the patients received a 4-week supervised heliotherapy treatment in the Canary Islands, Spain, after which they continued to be followed for another year. Heliotherapy dramatically reduced the severity of psoriasis and also seemed to have favourable long-term effects on psoriasis. The mean direct cost of the 4-week heliotherapy for one patient was FIM12,289 (£1 = FIM7.0 in 1989). The cost of flights and half-board in Spain formed nearly 60% (FIM7033) of the total cost. In the year preceding heliotherapy, the mean direct annual cost of antipsoriasis therapy was FIM7335 and in the year after FIM5700, a reduction of 22% in annual costs; this change was not statistically significant because there were large variations in costs among patients. The costs of heliotherapy exceeded manyfold the mean monthly cost of conventional psoriasis therapy. There were no overall savings using heliotherapy in those patients suffering mainly from moderately severe psoriasis. Heliotherapy saved costs only in those patients with severe psoriasis that required expensive medication or ward treatment. Although heliotherapy cannot be regarded as an economical treatment for the average patients with psoriasis, it clears psoriasis effectively and is preferred by patients. Thus, heliotherapy constitutes an alternative for patients suffering severe psoriasis.     

Effect of glove occlusion on the skin barrier

Wet work tasks are the most common exposures leading to occupational irritant contact dermatitis. Use of liquid‐proof gloves is recommended when performing wet work, however, gloves may also contribute to impairment of the skin barrier and development of irritant contact dermatitis. The aim of this study is to review the literature on the effects of glove occlusion on skin barrier function. The PubMed database was searched up to 1 February 2015 for articles on the association between glove occlusion and skin barrier function, including human studies only and in English. Only experimental studies including assessment of the skin barrier function were included in the data analysis. Thirteen articles were identified, 8 with focus on occlusion alone, 7 with focus on occlusion in combination with irritant exposure (some overlapping), and 2 field studies. In conclusion, data from the literature showed that the negative effect of occlusion in itself is limited, and that only extensive and long‐term occlusion will cause barrier impairment. However, studies investigating combined effect of occlusion and exposure to soaps/detergents indicate that occlusion significantly enhances the skin barrier damage caused by detergents/soaps in a dose‐response fashion.