阿达帕林 (Cabtreo, Differin, Epiduo +2)

概览

Adapalene is a third-generation topical retinoid with anti-comedogenic, comedolytic, and anti-inflammatory properties used to treat acne vulgaris in adolescents and adults.

作用机制

Adapalene is used for the treatment/maintenance of mild-to-severe acne (acne vulgaris). Acne is a multifactorial condition, and evidence exists to support multiple mechanisms of action for adapalene. Adapalene binds to retinoic acid receptor (RAR)-beta and RAR-gamma; this complex subsequently binds to one of three retinoid X receptors (RXRs), which as a complex is capable of binding DNA to modulate transcriptional activity. Although the full extent of transcriptional modulation is not described, retinoid activation is generally known to affect cellular proliferation and differentiation, and adapalene has been shown to inhibit HeLa cell proliferation and human keratinocyte differentiation. These effects primarily account for adapalene's comedolytic and anticomedogenic properties. In addition, adapalene modulates the immune response by down-regulating toll-like receptor 2 (TLR-2) expression and inhibiting the transcription factor activator protein 1 (AP-1). TLR-2 recognizes Cutibacterium acnes (formerly Propionibacterium acnes), the bacterium primarily associated with acne. TLR-2 activation causes nuclear translocation of AP-1 and downstream pro-inflammatory gene regulation. Therefore, adapalene has a general anti-inflammatory effect, which reduces inflammation-mediated acne symptoms. When used with benzoyl peroxide, which possesses free radical-mediated bactericidal effects, the combination acts synergistically to reduced comedones and inflammatory lesions.

适应症

Adapalene is indicated for the topical treatment of acne vulgaris in patients aged 12 and over. It is also indicated for acne vulgaris in combination with benzoyl peroxide and in a triple combination therapy with benzoyl peroxide and clindamycin.

• Acne Vulgaris