A Monocentric, Single-Blind, Randomized, Placebo-Controlled Study of the Safety and Efficacy of the Topical Drug Acnase Creme in the Treatment of Acne Vulgaris I and II
试验速览
- 阶段
- 3 期
- 发起方
- 入组人数
- 80
- 试验地点
- 1
- 主要终点
- Average clinical development of target lesions of the groups for each experimental time.
研究概览
简要总结
The objective of this study is to establish the safety in use of the topical drug Acnase Creme and its effectiveness in treatment of acne grade I (comedones) and II (comedones, papules, pustules).
详细描述
The acne is a common dermatosis in dermatological practice, affects more than 80% of the population during the second and third decades of life. It is found worldwide, with no evidence of racial or ethnic differences that influence the susceptibility to its development. However there is influence of genetic factors, hormones, the use of certain drugs that may have previous or aggravate the disease.
It is an inflammatory disease of the follicle polissebáceo, which consists of large sebaceous glands, multiacinares, rudimentary hair follicle and a channel comprising a acro-infundibulum in its upper portion and an infra-infundibulum in the dermal portion.
This is a benign condition, self-limited, but can cause serious psychological problems or disfiguring scars, which can persist for the rest of life.
The initial change is a disorder of follicular epithelial differentiation, during which the cornea cells (keratinocytes) which are the follicle polissebáceo are excessively released in the lumen. The result of this event is the appearance of the precursor, microcomedão, from which the lesions of acne are developed (closed comedones, open comedones, papules, pustules and nodules). The dilation of the follicular infundibulum with the material produces a corneal comedão closed. This is the first clinically visible lesions of acne. As hyperkeratosis extends to the upper infundibulum, extended its opening, it formed the comedão open.
The pathogenesis of acne is complex and understood only in part. The follicular occlusion with adherent keratinocytes and activation of hormone secretion resulting in the formation of sebaceous microcomedão. Studies suggest that free fatty acids intrafoliculares control inflammation through chemotactic properties on leukocytes, monocytes and neutrophils. The free fatty acids may provide the primary stimulus for the retention hyperkeratosis follicularis. Moreover, tallow provides a favorable substrate for the proliferation of Propiniobacterium acnes (P. acnes). Studies suggest that P. acnes, a microaerophilic bacterium (almost anaerobic), Gram-positive, has a lipase able to hydrolyze triglycerides in sebum into free fatty acids. Therefore, these pathogens play critical role in the generation of inflammatory lesions. The P. acnes produces proteases and neuroaminidases, which may increase the permeability of the follicular epithelium. Also produce a chemotactic factor of low molecular weight that selects the polymorphonuclear leukocytes. In the process of phagocytosis of bacteria are released hydrolases, which break the integrity of the follicular wall. Subsequently, the content intrafolicular - fragments of keratin, fat, hair, and P. acnes - is expelled to the dermis.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 12 Years 至 35 Years（Child, Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Age: 12 to 35 years;
- •Oily skin with tendency to acne;
- •Presence of non-inflammatory lesions and inflammatory, acne vulgaris diagnosed as grade I or II, as the following: I) Comedones - only comedones; II) Papulopustular - comedones, papules and pustules; III) Nodulocystic - comedones, papules, pustules, nodules and cysts; IV) Conglobates - severe acne, usually affects other areas of the body, out of preference, giving comedones, papules, pustules, abscesses, confluent nodules, cysts and scars.
- •Agreement in compliance with the procedures of the trial and attend the clinic on certain days and times for medical evaluations and scores of injuries acne;
- •Signing of the Term of Free and Informed Consent and agreement of the lowest in the case of patients between 12 and 17 years.
排除标准
- •Pregnancy (pregnancy test by urinary indication to women voluntary of childbearing age);
- •Nodulocystic and Conglobates acne;
- •Conditions associated hormone (tireoid disease, micropolicysts ovaries, adrenal or pituitary disorders);
- •Drug use systemic corticosteroids, anticonvulsants, photo-sensibility and / or new drugs for up to 01 months before the selection;
- •Use of topical therapy, systemic or physical (cleaning of the skin) for the treatment of acne at least 01 months before the selection;
- •History of atopic or allergic skin;
- •History of hypersensitivity to Benzoyl peroxide or sulfur;
- •Skin Conditions active (and / or spread) that may interfere with the outcome of the study;
- •Beginning or end-use of contraceptives; (for females)
- •Sunlight intense exposure until 01 months before the assessment;
- •Aesthetic treatments, skin up to 01 months before the selection;
- •Use of specific oily cosmetic for skin / acne and makeup, facial moisturizing, etc..;
- •Use of the drug Acnase prior to inclusion in the study.
研究组 & 干预措施
Acnase
干预措施: Benzoyl Peroxide 5% and Sulphur 2% (Drug)
Vehicle
干预措施: Vehicle of Acnase (Drug)
结局指标
主要结局
Average clinical development of target lesions of the groups for each experimental time.
时间窗: 12 weeks
次要结局
- Evaluation of oily skin through the clinical evaluation with four-point scale (absent, mild, moderate, intense)(12 weeks)
- Observation of occurrence and intensity of clinical parameters erythema, scaling, itching and burning through the clinical evaluation with four-point scale (absent, mild, moderate, severe).(12 weeks)
- Clinical evolution of the acne through the counting of inflammatory and non - inflammatory lesions.(12 weeks)