Formulation and Characterization of Benzoyl Peroxide Gellified Emulsions

The present investigation was carried out with the objective of formulating a gellified emulsion of benzoyl peroxide, an anti-acne agent. The formulations were prepared using four different vegetable oils, viz. almond oil, jojoba oil, sesame oil, and wheat germ oil, owing to their emollient properties. The idea was to overcome the skin irritation and dryness caused by benzoyl peroxide, making the formulation more tolerable. The gellified emulsions were characterized for their homogeneity, rheology, spreadability, drug content, and stability. In vitro permeation studies were performed to check the drug permeation through rat skin. The formulations were evaluated for their antimicrobial activity, as well as their acute skin irritation potential. The results were compared with those obtained for the marketed formulation. Later, the histopathological examination of the skin treated with various formulations was carried out. Formulation F3 was found to have caused a very mild dysplastic change to the epidermis. On the other hand, the marketed formulation led to the greatest dysplastic change. Hence, it was concluded that formulation F3, containing sesame oil (6%w/w), was the optimized formulation. It exhibited the maximum drug release and anti-microbial activity, in addition to the least skin irritation potential.     

达英-35加面部护理治疗痤疮疗效观察

目的 探讨面部护理加服达英－３５治疗痤疮的疗效。方法 采用面部护理治疗的同时按月经周期服用达英－３５的方法对５６例痤疮的患者进行系统性治疗２个月,并与单纯面部护理及单纯口服达英－３５进行对照。结果 混合组治愈率达８５％,总有效率１００％,较单纯面部护理有显著性差异,与单纯口服达英－３５组无显著性差异,但有显著性差异的趋势。结论 在单纯面部护理基础上服用达英－３５可以提高疗效,并可减少痤疮后遗症。     

围刺结合刺络拔罐治疗聚合性痤疮的随机对照研究

目的:观察围刺结合刺络拔罐治疗聚合性痤疮的临床疗效,探讨其机制。方法:选取52例聚合性痤疮患者,随机分为针刺组和西药组各26例。针刺组取痤疮局部围刺的基础上,合谷、血海、丰隆、三阴交穴常规针刺,每日治疗1次,同时,结合大椎、肺俞穴刺络拔罐,每周治疗2次;西药组选用异维A酸胶丸口服,10mg/次,每日3次;两组疗程均为4周。治疗结束后观察两组的临床疗效,并于治疗前后分别釆用双抗体夹心ELISA法检测血清白介素-6(IL-6)含量。结果:针刺组26例中,痊愈3例,显效14例,有效6例,无效3例,总有效率为88.5%;西药组26例中,痊愈4例,显效11例,有效7例,无效4例,总有效率84.6%;两组临床疗效比较,差异无统计学意义(P>0.05)。两组治疗后血清IL-6水平较治疗前均明显下降(P<0.01),针刺组较西药组降低更明显(P<0.05)。西药组与针刺组比较有更为明显的不良反应。结论:围刺结合刺络拔罐治疗聚合性痤疮疗效显著,与西药疗效相当;降低血清IL-6水平,调节机体的免疫功能,可能是其促进皮损恢复的机制之一。     

消痤乳液对兔耳痤疮模型治疗作用的实验研究

目的：建立兔耳痤疮模型,观察消痤乳液对实验性痤疮的治疗作用.方法：将50%煤焦油溶液外涂于兔耳内侧导管开口处约2 cm×2 cm,连续14 d,制备痤疮模型 痤疮模型制备成功后将家兔分为6组,分别在兔耳患处涂高、冲、低剂量的消痤乳液,生理盐水,基质,克林霉素甲硝唑搽剂治疗,逐日观察痤疮模型的变化,于用药后7 d取患处皮肤活检并观察病理切片.结果：外涂煤焦油溶液14 d后,肉眼可见免耳出现不同程度的粉刺,病理切片显示模型组呈现与人类痤疮类似的病理改变 外用高、中剂量消痤乳液组治疗7 d,兔耳痤疮完全消退,皮肤接近正常对照组,克林霉素甲硝唑搽刺组兔耳痤疮大部分消退,皮肤仍有少量角化及粉刺颗粒,生理盐水及基质组痤疮无显著性变化.结论：消痤乳液对实验性兔耳痤疮模型有显著的治疗效果.     

Oral Zinc as a Novel Adjuvant and Sparing Therapy for Systemic Isotretinoin in Acne Vulgaris: A Preliminary Comparative Study

BackgroundSystemic isotretinoin is the most effective treatment for acne vulgaris (AV). However, numerous side effects are associated with isotretinoin. Oral zinc has a better safety profile and has been used to treat AV with variable results. ObjectiveWe sought to evaluate the safety and efficacy of combining oral zinc to low-dose systemic isotretinoin in AV patients.MethodsSixty AV patients were divided into two groups. Group A received oral zinc sulfate plus low-dose isotretinoin and Group B received the standard isotretinoin dosage. At each visit acne severity, photos, side effects, and patient-reported satisfaction were recorded.ResultsIn the two groups, no significant difference in reduction of lesion count and Global Acne Grading System scores. The frequency of treatment-related side effects was (20%) in Group A and (76.7%) in Group B. Furthermore, there was no difference regarding the relapse rates between both groups (p>0.05). Finally, the patients’ satisfaction rates did not differ between the two groups.ConclusionOral zinc plus low-dose isotretinoin resulted in satisfactory improvement in AV patients with fewer side effects. Further studies are recommended to compare the efficacy of other zinc preparations if combined with systemic isotretinoin at different concentrations.     

痤疮患者治疗情况临床流行病学分析

目的　了解痤疮患者目前的治疗状况和就医行为特点。方法　对 2 3 3 1例门诊痤疮患者进行问卷式流行病学调查。结果　在近 1年内接受过治疗的痤疮患者占所调查痤疮患者总数的 5 2 .6% ;痤疮程度重、女性患者和广州患者更愿意接受治疗 ;患者对治疗满意的占 43 % ,Ⅲ级和Ⅳ级痤疮患者更容易对治疗不满意 ,而在医院接受治疗、采用维持治疗和同时配合面膜治疗的患者一般对疗效满意。结论　要对痤疮患者进行健康教育 ,及早、正确、足够疗程的治疗和维持治疗对于提高疗效和患者的满意度非常关键     

青痤乳膏的药效学实验研究

目的：评价青痤乳膏治疗痤疮的作用机制及药效学研究。方法：采用小鼠二甲苯耳肿胀法、豚鼠磷酸组织胺法、小鼠耳部奇正消痛贴微循环实验法以观察青痤乳膏的药效学机制。结果：青痤乳膏能够明显抑制二甲苯所致小鼠耳片炎性肿胀、提高了磷酸组织胺对豚鼠右后足背部的致痒阈、改善了奇正消痛贴对小鼠耳廓微循环。结论：青痤乳膏具有较好的改善微循环、抗炎、止痒作用。     

中西药内服联合自拟痤疮软膏局部外用治疗寻常痤疮临床观察

目的：观察中药内服和自拟痤疮软膏外用治疗寻常性痤疮的疗效。方法：72例患者随机分为两组,治疗组36例采用口服中药联合皮损局部外用自拟痤疮软膏,对照组36例采用单纯口服中药。结果：治疗组有效率为88.89%,对照组有效率为58.33%。差异有显著性（P〈0.05）。结论：中药内服联合自拟痤疮软膏局部外用治疗寻常性痤疮疗效优于单纯口服中药。     

清肺祛脂方治疗寻常痤疮的临床研究

目的验证清肺祛脂方治疗寻常痤疮的临床疗效和作用机理.方法观察皮肤损害、记录个数、测量皮脂溢出率(吸烟纸法).结果通过临床观察,清肺祛脂方总有效率为90%,跟对照组无显著差异.结论清肺祛脂方是临床治疗寻常痤疮的有效药物,抑制皮脂溢出率是其作用机理之一.     

Notch信号通路在皮肤病的研究进展

Notch信号通路是一条进化上十分保守的信号转导系统.Notch受体与相邻细胞的配体相互作用转导细胞信号,从而影响细胞的增殖、分化和凋亡.较多文献表明,Notch信号通路在维持皮肤正常生理功能以及炎症性皮肤病、自身免疫性皮肤病、皮肤肿瘤、色素性皮肤病等多种皮肤病中发挥重要作用.尽管目前临床应用尚不成熟,Notch信号抑制剂和激活剂有希望为皮肤病的治疗提供新思路.