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用体外培养人角朊细胞研究了1-25-双羟维生素D3对角朊细胞增殖,细胞形态及HLA-DR,ICAM-1分子表达的影响。培养液中加入1,25(OH)2D3可使细胞增殖明显抑制用流式细胞仪测定,1,25(OH)2D3处理6天后角朊细胞体积较未处理的明显变大。 相似文献
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1,25-双羟维生素D_3和MC903对培养人角朊细胞白介素1α及白介素8分泌的影响 总被引:2,自引:0,他引:2
1,25-双羟维生素D3[1,25(OH)2D3]及其衍生物钙泊三醇(MC903)对银屑病有治疗作用。我们用体外培养人角朊细胞研究了1,25(OH)2D3和MC903对角朊细胞白介素1α(IL1α)及白介素8(IL8)分泌的影响。1,25(OH)2D3和MC903本身对未受刺激的角朊细胞IL1α分泌无明显影响。用佛泊脂PMA和脂多糖(LPS)刺激角朊细胞,使得IL1α分泌显著下降和使IL8分泌显著升高。同时加入1,25(OH)2D3和MC903可抑制这些变化,并显示剂量相关性。用肿瘤坏死因子α刺激角朊细胞,可使IL8分泌显著升高和使IL1α轻度升高。1,25(OH)2D3和MC903也可抑制这些升高。在本实验中,PMA/LPS刺激角朊细胞引起的IL1α和IL8分泌变化与银屑病皮损非常相似,提示1,25(OH)2D3和MC903的这些作用可能与它们对银屑病的疗效有关。 相似文献
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为了解粘连分子在异位性皮炎(AD)炎症及免疫反应过程中的作用,对AD皮损部位细胞间粘连分子-1(ICAM-1)的表达作了研究。结果虽然正常皮肤表皮不表达ICAM-1,但AD皮损处角朊细胞则局灶性表达ICAM-1,尤其在有严重单个核细胞浸润及表皮内淋巴细胞移入的部位。免疫表型研究表明,AD真皮浸润中CD4+/CDw29+/CD45RA-记忆性T细胞占主导,推测它们可能通过分泌某些细胞因子而诱导角朊细胞表达ICAM-1。ICAM-1与淋巴细胞表面的淋巴细胞功能相关抗原-1(LFA-1)之间相互作用可能对淋巴细胞在皮肤内的运行起调控作用。 相似文献
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用免疫组化法对发疹型药疹皮损中ICAM-1和HLA-DR及LFA-1的检测 总被引:1,自引:0,他引:1
目的 探讨细胞间粘附分子-1(ICAM-1)和人类白细胞表面抗原-DR(HLA-DR)及淋巴细胞功能相关抗原-1(LFA-1)在发疹型药疹发病机制中的作用。方法 用免疫组化LSAB法对34例发疹型药疹患者皮损组织和8例对照皮肤中ICAM-1和HLA-DR及LFA-1进行了检测。结果 发现皮损中角质形成细胞表达ICAM-1和HLA-DR,其阳性率明显高于8例正常对照,在真皮的血管内皮细胞也有ICAM-1的表达,真皮浸润淋巴细胞还表达LFA-1。结论 HLA-DR、ICAM-1和LFA-1参与了发疹型药疹的炎症过程。 相似文献
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为了解粘连分子在异位性皮炎炎症及免疫反应过程中的作用,对AD皮损部位细胞间粘连分子-1的表达作了研究。结果虽然正常皮肤表皮不表达ICAM-1但AD皮损处角朊细胞则局灶性表达ICAM-1,尤其在有严重单个核细胞浸润及表皮内淋细胞移入的部位。免疫表型研究表明,AD真皮浸润中CD4^4+/CDw29^+/CD45RA^-1记忆性T细胞占主导,推测它们可能通过分泌某些细胞因子而诱导角朊细胞表达ICAM-1 相似文献
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异位性皮炎皮损中ICAM—1的表达及其临床意义 总被引:1,自引:0,他引:1
为了探讨ICAM-1在异位性皮炎(AD)发病机理中的作用,用免疫组化方法对16例AD皮损中ICAM-1的表达进行研究,结果显示,16例AD皮损中14例表皮角朊细胞膜上有ICAM-1的灶性表达,在有表皮海绵水肿处表达强,16例AD真皮血管内皮细胞ICAM-1高表达。10例正常表皮角朊细胞上无ICAM-1的表达。AD皮损ICAM-1染色评分与临床症状评分有相关性(r=0.476,P〈0.05)。提示I 相似文献
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目的 探讨血管内皮细胞在银屑病发病中的作用。方法 采用ABC免疫组化方法研究寻常型银屑病皮损处血管内皮细胞ICAM-1、CD34、HLA-DR、FⅧRAg和CD36的表达情况。结果 进行期寻常型银屑病患者皮损处真皮浅层血管内皮细胞ICAM-1、CD34和HLA-DR的表达明显强于静止期,而静止期则强于正常人皮肤。FⅧRAg和CD36在进行期和静止期的表达变化不明显。结论 银屑病患者皮损真皮浅层血管 相似文献
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目的 探讨白细胞流变性和细胞粘附分子(CAMS)表达与银屑病的关系。方法 采用ELISA法、红细胞变形能力测定 体外血栓血小板粘附两用仪检测了115例银屑2和89例健康人白细胞CD18表达、血清可溶性细胞间粘附分子-1(sICAM-1)浓度、白细胞滤过指数(LFI)和白细胞粘附率(AR)的变化。结果 银屑病患者白细胞CD18表达、sICAM-1浓度、LFI和LAR均明显增高,与对照组比较差异均有 相似文献
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目的:对两种氯雷他定(百为坦和开瑞坦)治疗湿疹、皮炎的成本效果进行分析.方法:将患者分为两组,每组30例,分别服用百为坦和开瑞坦,除观察疗效外还进行成本效果分析。结果:两组疗效相当,均无明显的不良反应。但百为坦的治疗成本明显低于开瑞坦.结论:氯雷他定治疗湿疹、皮炎疗效高,安全性好。百为坦比开瑞坦治疗成本低。 相似文献
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Rickettsial and ehrlichial infections are both carried by arthropod vectors. Both Rickettsia and Ehrlichia are small intracellular gram-negative coccobacilli. Clinical manifestations of Rickettsia range from spotted fevers to various forms of typhus. Human ehrlichiosis can present as monocytic ehrlichiosis or granulocytic anaplasmosis. Prevention is by avoidance of the responsible vectors. Therapy is usually with doxycycline, but chloramphenicol can also be used. 相似文献
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Bernhard Fink PhD Frauke Neuser PhD Gwenelle Deloux PhD Susanne Röder Paul J Matts PhD 《Journal of Cosmetic Dermatology》2013,12(1):78-84
Female hair color is thought to influence physical attractiveness, and although there is some evidence for this assertion, research has yet not addressed the question if and how physical damaging affects the perception of female hair color. Here we investigate whether people are sensitive (in terms of visual attention and age, health and attractiveness perception) to subtle differences in hair images of natural and colored hair before and after physical damaging. We tracked the eye‐gaze of 50 men and 50 women aged 31–50 years whilst they viewed randomized pairs of images of 20 natural and 20 colored hair tresses, each pair displaying the same tress before and after controlled cuticle damage. The hair images were then rated for perceived health, attractiveness, and age. Undamaged versions of natural and colored hair were perceived as significantly younger, healthier, and more attractive than corresponding damaged versions. Visual attention to images of undamaged colored hair was significantly higher compared with their damaged counterparts, while in natural hair, the opposite pattern was found. We argue that the divergence in visual attention to undamaged colored female hair and damaged natural female hair and associated ratings is due to differences in social perception and discuss the source of apparent visual difference between undamaged and damaged hair. 相似文献
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J E Sebben 《Journal of the American Academy of Dermatology》1984,11(3):381-392
Adequate instrument handling and sterilization are important aspects of office surgery. Heat sterilization is the most reliable choice. The steam autoclave is highly recommended. Dry heat is effective but can pose some storage problems. Gas sterilization is useful for heat-sensitive materials but not practical for the private office. Cold "sterilization" is not reliable for incisional surgery. In addition to proper sterilization modality selection, the surgeon must observe important standards of instrument care, packing, and storage. 相似文献
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