痤疮相关基因多态性的研究进展

痤疮是一种可能与多基因遗传有关的累及毛囊皮脂腺的炎症性皮肤病,发病机制复杂,目前尚未完全阐明.已有研究表明,某些基因的单核苷酸多态性可能与痤疮易感性相关,如SELL基因、RETN基因、DDB2基因、MYC基因、转化生长因子通路相关基因、胰岛素样生长因子1基因等.从炎症相关基因多态性、推激素受体相关基因多态性、转化生长因子β通路相关基因多态性及胰岛素受体相关基因多态性4个方面,探讨痤疮相关基因多态性的研究进展.深入探索痤疮相关基因多态性对基因靶向药物的研发有重要意义.     

FLG基因及相关疾病研究进展

丝聚蛋白(filaggrin,FLG)基因位于人类染色体1q21.3,其翻译表达产物与维持皮肤屏障和细胞分化功能密切相关。研究发现FLG基因的多态性与特应性皮炎、银屑病、寻常型鱼鳞病等多种疾病发病相关,本文对近年关于FLG基因及与其相关疾病的研究进行了综述。     

高通量测序分析重度寻常痤疮患者和健康人肠道菌群差异

目的 利用高通量测序技术分析重度寻常痤疮患者和健康人肠道菌群的差异.方法 门诊确诊的重度寻常痤疮患者10例及年龄、性别相匹配的健康人10例,分别收集粪便标本,提取细菌DNA,行16S rRNA测序鉴定微生物的种类,并进行菌群差异分析.结果 两组肠道菌群多样性未发现显著差异,仅在肠道菌群的相对丰度上发现个别具有显著差异的菌.两组标本主要由拟杆菌门、厚壁菌门、变形菌门、放线菌门组成.比较两组在门、属水平上菌群相对丰度,差异均无统计学意义;在种水平上,Blautia producta、Coprococcus eutactus在两组间差异有统计学意义.结论 重度寻常痤疮患者和健康人相比,菌群多样性指数未见明显差异.但某些细菌菌种存在显著差异.     

窄谱蓝光联合1%克林霉素磷酸酯凝胶治疗寻常痤疮疗效观察

目的观察窄谱蓝光联合外用克林霉素磷酸酯凝胶治疗寻常痤疮的疗效。方法 110例痤疮患者随机分为两组,治疗组58例,采用窄谱蓝光照射联合外用1%克林霉素磷酸酯凝胶治疗;对照组52例,外用1%克林霉素磷酸酯凝胶治疗。结果治疗组和对照组有效率分别为75.9%和25.0%,治疗组疗效和有效率高于对照组(P<0.01)。结论窄谱蓝光照射联合外用1%克林霉素磷酸酯凝胶治疗痤疮疗效优于单用克林霉素磷酸酯凝胶。     

A pilot methodology study for the photographic assessment of post‐inflammatory hyperpigmentation in patients treated with tretinoin

Background Post‐inflammatory hyperpigmentation (PIH) is a common occurrence in patients with acne vulgaris, particularly in those with skin of colour. Aims A previous study has demonstrated the benefit of tretinoin (retinoic acid) in the treatment of PIH; however, there is currently no standard protocol to evaluate change in PIH following treatment. Based on these findings, we performed a pilot, exploratory, blinded, intraindividual‐controlled methodology study that consisted of a photographic assessment protocol with facial mapping. Materials and methods The study was based on a secondary analysis of a phase 4, community‐based trial of 544 acne patients who were treated with tretinoin gel microsphere 0.04% or 0.1%. Only patients with Fitzpatrick types III–V (skin of colour) were included in the study; subjects with Fitzpatrick skin type VI were excluded because the photographic assessment did not allow for proper evaluation. Results Despite the small number of subjects evaluated (n = 25), the results revealed consistent assessment of improvement in PIH between two independent graders (weighted κ = 0.84). Conclusion Further study with a larger population is recommended to validate the accuracy of this method.     

种子引发对夏枯草种子活力影响的初步研究

目的:探讨提高夏枯草种子活力的有效途径。方法:20℃、黑暗条件下,采用一定浓度的液体引发剂对3个居群夏枯草种子进行引发处理。结果:20%~30%聚乙二醇(PEG),200~400mg·L^-1赤霉素(GA₃)引发促进夏枯草种子萌发,种子活力提高;0.6%~3.0%NaCl引发,夏枯草种子发芽率降低,发芽时间不同程度提前。0.6%~2.4%KNO₃-KH₂PO₄引发,促进紫金山、磐安夏枯草种子萌发,亳州夏枯草种子发芽率降低。结论:适量浓度PEG,GA₃提高夏枯草种子活力,KNO₃-KH₂PO₄,NaCl降低低活力夏枯草种子的发芽率。     

窄谱中波紫外线联合中药药浴治疗寻常型银屑病疗效观察及对血管内皮细胞生长因子影响

目的:观察中药药浴联合窄谱中波紫外线(NB-UVB)治疗寻常型银屑病的疗效及治疗前后血清细胞因子浓度改变,探讨治疗机制。方法:32例寻常型银屑病患者中药药浴后,给予NB-UVB照射,每周3次,共40次。用酶联免疫吸附试验检测32例患者治疗前后血管内皮细胞生长因子(VEGF)水平。结果:32例患者治疗后痊愈11例,临床有效率为90.6%。32例患者治疗前VEGF血清水平较健康对照者水平高,照射后显著下降。结论:中药药浴联合NB-UVB照射治疗银屑病疗效好,不良反应少,VEGF在寻常型银屑病中发挥重要作用。