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| Name | Class |
|---|---|
| Hospital Central "Dr. Ignacio Morones Prieto" | OTHER |
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Melasma is a hyperpigmentation disorder that is probably exacerbated by visible light. Opsin receptors (OPN 1, 2, 3, 4 y 5) were described in the skin, being capable of activating melanogenesis induced by visible light. The aim of this study was to evaluate the expression of OPN in melasma skin and its changes following treatment with UV-Vis filter and 0.05% retinoic acid for 12 weeks.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Retinoic Acid | Active Comparator | patients with melasma treated with 0.05% retinoic acid plus UV-Visible light filter |
|
| Sunscreen | Placebo Comparator | patients with melasma treated with UV-Visible light filter alone |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Retinoic acid | Drug | To evaluate the role of Opsin receptors in melasma. The patients were treated with 0.05% Retinoic Acid, a regular therapy to treatment melasma, a ligand of Opsin receptors. Also, Uv-Visible light filter treatment as a posible opsin receptor blocker |
| Measure | Description | Time Frame |
|---|---|---|
| MASI score | Melasma Activity and Severity Index | 3 months |
| Measure | Description | Time Frame |
|---|---|---|
| Opsin receptors | Relative Expression of the opsin receptors by RT-qPCR | 3 months |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Dermatology Department. Hospital Central "Dr. Ignacio Morones Prieto" | San Luis Potosà City | 78290 | Mexico |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 28842328 | Result | Regazzetti C, Sormani L, Debayle D, Bernerd F, Tulic MK, De Donatis GM, Chignon-Sicard B, Rocchi S, Passeron T. Melanocytes Sense Blue Light and Regulate Pigmentation through Opsin-3. J Invest Dermatol. 2018 Jan;138(1):171-178. doi: 10.1016/j.jid.2017.07.833. Epub 2017 Aug 24. | |
| 31097585 | Result | Ozdeslik RN, Olinski LE, Trieu MM, Oprian DD, Oancea E. Human nonvisual opsin 3 regulates pigmentation of epidermal melanocytes through functional interaction with melanocortin 1 receptor. Proc Natl Acad Sci U S A. 2019 Jun 4;116(23):11508-11517. doi: 10.1073/pnas.1902825116. Epub 2019 May 16. |
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| ID | Term |
|---|---|
| D008548 | Melanosis |
| ID | Term |
|---|---|
| D017495 | Hyperpigmentation |
| D010859 | Pigmentation Disorders |
| D012871 | Skin Diseases |
| D017437 | Skin and Connective Tissue Diseases |
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| ID | Term |
|---|---|
| D014212 | Tretinoin |
| ID | Term |
|---|---|
| D014801 | Vitamin A |
| D012176 | Retinoids |
| D002338 | Carotenoids |
| D011090 | Polyenes |
| D000475 |
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patients with melasma divided in a UV-Visible light filter with 0.05% retinoic acid group and UV-Visible light filter alone
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| Alkenes |
| D006839 | Hydrocarbons, Acyclic |
| D006838 | Hydrocarbons |
| D009930 | Organic Chemicals |
| D053138 | Cyclohexenes |
| D003510 | Cyclohexanes |
| D003516 | Cycloparaffins |
| D006840 | Hydrocarbons, Alicyclic |
| D006844 | Hydrocarbons, Cyclic |
| D013729 | Terpenes |
| D004224 | Diterpenes |
| D010860 | Pigments, Biological |
| D001685 | Biological Factors |