The Influence of Peripheral Androgen Conversion at Toll-like Receptors-2 and CD1d Expressions in Human Keratinocytes as Well as Their Modulation After 6 Months Treatment With Oral Contraceptive.
试验速览
- 阶段
- 不适用
- 发起方
- 入组人数
- 60
- 试验地点
- 1
- 主要终点
- Clinical evaluation of the treatment group
研究概览
简要总结
Acne vulgaris is a chronic inflammatory disease that affects the pilosebaceous unit. Recent studies have demonstrated an increase number of acne cases in adult women. These cases are predominantly normoandrogenic and have some clinical differences when compared with the most common group, the adolescent. The local glandular metabolism converts some hormonal precursors to more active substances that increase the sebum production, leaving these areas more prone to increase the colonization to Propionibacterium Acnes (P. Acnes). Toll-like receptor 2, expressed by inflammatory cells play a crucial role in the innate immune response to this bacterium. Previous studies confirm that exist a reduced expression of CD1d by keratinocytes in acne lesion, what can be interpreted as a low antigen-present function. The influence of hormonal alteration in the sebaceous glands could modulate the expressions of TLR-2 and CD1d explaining the persistence of lesions in adult women. The change to more estrogenic metabolism, with use of specific contraceptive pills could normalize this immune-mediated inflammatory process.
Objective
To analyze how the peripheral androgen conversion can influence the toll-like receptor 2 and CD1d expression in women with inflammatory acne before and after 6 months of oral contraceptives with anti-androgen activity.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Diagnostic
- 盲法
- Single (Outcomes Assessor)
入排标准
- 年龄范围
- 26 Years 至 44 Years（Adult）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •Signing the consent form before any study procedures;
- •women aged 26 to 44 years, not pregnant and in good health;
- •no topical treatment for acne in the past three months,
- •absence of the use of oral antibiotics in the last 3 months;
- •absence of the use of isotretinoin in the last 2 years;
- •absence of oral contraceptive use in the last 3 months;
- •absence of clinical evidence of immunosuppression and
- •accordance with the conditions of study, ability to understand and strictly follow the instructions given.
- •For the oral contraceptives group:
- •No contraindications to the use hormonal contraceptives.
- •For the azelaic acid group:
- •Absence of hypersensitivity to azelaic acid.
排除标准
- •Women who do not agree with the conditions of the study or without the ability to understand and closely follow the guidelines received without availability to attend the revaluations or who refuse to sign the Informed Consent Form;
- •pregnant or lactating women;
- •use of the following oral medications: cortisone derivatives, lithium, anticonvulsants, isoniazid, oral contraceptives, androgens, danazol, iodides, bromides, disulfiram, cyclosporine, azathioprine, thiuram, vitamins B2, B6 and B12;
- •treatment of facial skin with topical retinoids (tretinoin and adapalene), azelaic acid, benzoyl peroxide, clindamycin, erythromycin, nicotinamina, alone or in combination, in the past 3 months;
- •treatment with oral antibiotics in the past 3 months;
- •acnogenics cosmetics.
- •For the group treated with oral contraceptives:
- •Presence of contraindications to oral contraceptive use:
- •Smokers over 35 years;
- •history of deep venous thrombosis;
- •history of stroke;
- •history of breast cancer;
- •presence of jaundice, and severe active liver disease or biliary disease;
- •diabetes mellitus for more than 20 years or eye injury, or neurological impairment;
- •blood pressure greater than or equal to 160 to 100 for systolic and diastolic;
- •cardiovascular disease and
- •presence of severe headache associated with blurred vision frequently.
- •For the group treated with azelaic acid:
- •1.Presense of allergic and / or irritating symptoms to the use of azelaic acid.
- •For the control group 1:
- •History, clinical signs and / or laboratory evidence of hyperandrogenism. 2 .Presence of inflammatory acne.
研究组 & 干预措施
treatment 1
topical acid azelaic, used 2 times a day for 6 months
干预措施: treatment azelaic acid (azelan) (Drug)
treatment 2
contraceptive with drospirenone/ethinyl estradiol used for 6 months
干预措施: dorspirenone/ethynil estradiol (Drug)
结局指标
主要结局
Clinical evaluation of the treatment group
时间窗: 6 months
by the researcher: by counting the inflammatory lesions. by the research subjects: the general appearance of skin at the time of study entry and after the treatment. Will be used a 4-point scale: 0 = no acne, 1 = mild acne, moderate acne, and 2 = 4 = severe acne.
次要结局
- Photographic study of the treatment group(6 months)
研究者
Marco Alexandre Dias da Rocha
MD
Federal University of São Paulo