[Artículo traducido] Dermatoscopia como herramienta auxiliar en la evaluación de foliculitis por Malassezia: estudio observacional

Malassezia folliculitis is an under-recognized entity commonly affecting the face and upper trunk. Clinical picture mimics acne vulgaris and diagnosis is challenging at times. Ten percent potassium hydroxide examination is usually performed to confirm the diagnosis. This study sought to describe the dermoscopic features in Malassezia folliculitis. Patients diagnosed clinically with Malassezia folliculitis and confirmed by 10% potassium hydroxide preparation were included in the study. Dermoscopy was performed with a videodermatoscope (Dino-Lite AM413ZT; Polarizer) from the most representative lesion. A total of 45 patients (M:F = 1:0.8) were recruited. All patients had monomorphic papulo-pustular lesions. Itching was present in 64.4% patients. Dermoscopy reveled folliculocentricity (100%), perilesional background erythema (100%), dotted/linear/tortous vessels (88.9%), dirty white scaling (77.8%), hypopigmentation of hair follicle (64.4%), coiled/looped hairs (57.8%) and broken hairs (13.3%).In conclusion, dermoscopy shows typical features in Malassezia folliculitis and can serve as a office-based tool for identification of this entity.     

不同针灸疗法治疗寻常痤疮的网状Meta分析＊

目的 采用网状Meta分析方法，评价针刺、火针、艾灸等不同针灸疗法对寻常痤疮（acne vulgaris， AC）临床有效率及复发率的影响。方法 计算机检索PubMed、Embase、Cochrane、Web of Science、CINAHL、中国知网（China National Knowledge Infrastructure， CNKI）、万方数据库（WanFang Data）、中国生物医学文献数据库（China Biology Medicine disc， CBM）和维普中文期刊服务平台（VIP Database），搜集针灸疗法治疗寻常痤疮的随机对照试验（randomized controlled trail， RCT），检索时间均为建库至2021年3月，文献筛选、资料提取及偏倚风险评价均由两名研究者独立进行。数据分析使用Stata16.0软件。结果 纳入42项RCT，共3911例寻常痤疮患者。数据分析结果显示，临床总有效率：艾灸、放血、放血+穴位注射、放血+针刺、火针优于西药（P<0.05），放血、放血+穴位注射、放血+针刺、火针、穴位埋线优于针刺疗法（P<0.05），放血+针刺疗法优于自血疗法（P<0.05），累计排序概率曲线下面积（surface under the cumulative，SUCRA）显示放血+针刺治疗寻常痤疮总有效率最高；复发率：放血疗法+穴位注射优于电针（P<0.05），SUCRA结果显示针刺+自血疗法治疗寻常痤疮复发率最低。结论 放血联合针刺疗法在提高总有效率上具有最好的疗效，针刺联合自血疗法可有效降低复发率，受纳入研究所限，以上结论尚需更多大样本、高质量RCT进一步验证。     

Demodex folliculorum infestations in common facial dermatoses: acne vulgaris,rosacea, seborrheic dermatitis

BackgroundDemodex mites are found on the skin of many healthy individuals. Demodex mites in high densities are considered to play a pathogenic role.ObjectiveTo investigate the association between Demodex infestation and the three most common facial dermatoses: acne vulgaris, rosacea and seborrheic dermatitis.MethodsThis prospective, observational case-control study included 127 patients (43 with acne vulgaris, 43 with rosacea and 41 with seborrheic dermatitis) and 77 healthy controls. The presence of demodicosis was evaluated by standardized skin surface biopsy in both the patient and control groups.ResultsIn terms of gender and age, no significant difference was found between the patients and controls (p > 0.05). Demodex infestation rates were significantly higher in patients than in controls (p = 0.001). Demodex infestation rates were significantly higher in the rosacea group than acne vulgaris and seborrheic dermatitis groups and controls (p = 0.001; p = 0.024; p = 0.001, respectively). Demodex infestation was found to be significantly higher in the acne vulgaris and seborrheic dermatitis groups than in controls (p = 0.001 and p = 0.001, respectively). No difference was observed between the acne vulgaris and seborrheic dermatitis groups in terms of demodicosis (p = 0.294).Study limitationsSmall sample size is a limitation of the study. The lack of an objective scoring system in the diagnosis of Demodex infestation is another limitation.ConclusionThe findings of the present study emphasize that acne vulgaris, rosacea and seborrheic dermatitis are significantly associated with Demodex infestation. Standardized skin surface biopsy is a practical tool in the determination of Demodex infestation.     

注射氨基酮戊酸光动力疗法对大鼠痤疮样炎性结节模型的疗效及组织病理学影响

【摘要】 目的 探讨注射氨基酮戊酸（ALA）光动力疗法对大鼠痤疮样炎性结节模型的疗效及组织病理改变。方法 40只SPF级SD大鼠分为正常对照组、模型对照组、注射ALA组、外敷ALA组，每组10只。除正常对照组不处理外，其余3组大鼠右耳廓内侧接种痤疮丙酸杆菌，建立大鼠痤疮样炎性结节模型。造模成功后，模型对照组不处理，注射ALA组将5%ALA注射入结节内再予红光照射，外敷ALA组直接外敷5%ALA于鼠耳痤疮样结节处再予红光照射，均为每周1次，共2次。末次治疗24 h后观察各组大鼠耳部大体表现和组织病理学变化，测量耳廓厚度，并检测肝肾功能。采用单因素方差分析和LSD-t检验比较各组差异。结果 正常对照组、模型对照组、外敷ALA组、注射ALA组大鼠耳廓厚度分别为（0.435 ± 0.006）、（1.269 ± 0.071）、（1.088 ± 0.098）、（0.699 ± 0.095） mm，差异有统计学意义（F = 235.60，P < 0.001），模型对照组耳廓厚度高于正常对照组、外敷ALA组和注射ALA组（t 值分别为24.18、5.24、16.48，均P < 0.01）；注射ALA组低于外敷ALA组（t = 11.24，P < 0.01）。外敷ALA组和注射ALA组大鼠耳廓局部红肿程度、结节数均低于模型对照组，真皮及皮下组织浸润炎症细胞数量减少，注射ALA组结节消退更明显，亦未见团块状分布的炎症细胞或微脓肿形成。各组大鼠丙氨酸转氨酶、天冬氨酸转氨酶、肌酐、尿素氮水平差异均无统计学意义（均P > 0.05）。结论 注射ALA光动力疗法治疗大鼠痤疮样炎性结节模型较外敷ALA光动力疗法治疗更有效。     

超分子水杨酸在皮肤病中的应用研究进展

超分子水杨酸作为水杨酸的一种控缓释剂型,对皮肤具有抗炎、抗菌、双向调节角质等作用, 因此近年来广泛应用于皮肤病的临床治疗中。本文详细介绍了超分子水杨酸的作用机理,并结合相关文献 报道综述超分子水杨酸在皮肤科的应用,包括痤疮、玫瑰痤疮、黄褐斑、炎症后色素沉着及其他皮肤病, 以期为超分子水杨酸的临床应用提供参考。     

中药汤剂内服联合夫西地酸乳膏外敷治疗寻常痤疮的效果

目的 探讨中药汤剂内服联合夫西地酸乳膏外敷治疗寻常痤疮的应用效果。方法 选取2021年 5月-2023年2月我院收治60例寻常痤疮患者作为研究对象,按照随机数字表法分为对照组和观察组,每 组30例。对照组给予夫西地酸乳膏治疗,观察组给予中药汤剂内服联合夫西地酸乳膏外敷治疗,比较两 组中医症状积分、心理状态、舒适度及临床疗效。结果 观察组治疗后颜面潮红、瘙痒肿痛以及热脱屑 积分均低于对照组,差异有统计学意义（P＜0.05）;观察组治疗后SAS以及SDS评分均低于对照组,差 异有统计学意义（P＜0.05）;观察组生理、社会、心理、环境以及整体上舒适度评分均低于对照组,差 异有统计学意义（P＜0.05）;观察组治疗总有效率高于对照组,差异有统计学意义（P＜0.05）。结论 采用中药汤剂内服联合夫西地酸乳膏外敷治疗寻常痤疮,临床疗效确切,可改善患者临床症状,缓解不 良情绪,且舒适度较高。