Active clinical trials for "Melanosis"

Tranexamic acid and 1927 diode laser non-ablative fractionated laser for the treatment of Melasma.

Comparative split face study in which 30 patients with freckles are recruited.One side of the face will be treated with Q Switched (QS)KTP 532nm, and the other side will be treated with intradermal tranexamic acid (TXA).

Melasma (also called chloasma and pregnancy mask) is characterized by pigmented lesions darker than their usual complexion on the faces of affected subjects. The physiopathology of melasma is still poorly understood. To date, the factors that favor the onset of melasma appear to be: genetic predisposing factors, changes in sex hormone levels, and sun exposure. Vascularization as well as elastosis also appear to be increased in skin with melasma. The aim of this study is to evaluate the different levels of expression of biomarkers between pigmented melasma lesions and surrounding healthy skin when melasma is highly pigmented but also when it is dormant (ie treated melasma, without UV solicitation in the heart of winter). The goal is to identify and better understand the involvement of different genes and proteins and thus offer more specific ways of care, and therefore effective, for the subjects.

Study's objectives are to determine proportion of melasma cases in hyperthyroid patients and to compare severity of melasma before and after medications of three months hyperthyroid therapy using modified melasma area and severity index (mMASI) score. A quasi experimental (pre-post intervention) study was conducted in Jakarta in August 2019-February 2020.

Melasma is a commonly pigmention characterized by melanotic patches on the face. literature searched revealed that periodontitis and vitamin D deficiency have occurred along with anemia. Actinic associated factors may be indirectly related to vitamin D, melasma contributes to sun exposed area of face.To correlate melasma with clinical evidence of periodontitis and vitamin D serum analysis along side hb %. Patients with facial melasma between 30-70yrs of either gender formed Group A (95). Anaemia and periodontitis were Clinically checked. Additionally serum analysis of vitamin D and hb percentage were analysed. Similar procedure was carried out on controls which had Group B (95) patients with no melasma on face. The study revealed significant correlation between melasma and periodontitis with vitamin D abnormalities (p value<.05), where as insignificant correlation between melasma and Hb%. The correlation between melasma, vitamin d changes and periodontitis may prompt the clinician to check for any such changes in any patient. Melasma in patients with periodontitis and serum vitamin D changes might be a considered as a syndrome.

The objective of the study was to compare the level of serum FT4 and TSH in patients with mild melasma and moderate-severe melasma. The determination of melasma lesion could also be known by using Janus II facial analysis UV light and polarization light to analyze the pattern of hyperpigmentation on melasma. This was a descriptive-analytic study used a cross-sectional method that was performed in 2019 at two different dermatology and venerology clinics in Indonesia, Cipto Mangunkusumo Hospital Jakarta and Gatot Subroto Army Hospital Jakarta. Forty-eight subjects with melasma, 50% diagnosed with mild melasma and 50% with moderate-severe melasma according to the modified melasma area and severity index (mMASI) score. The level of serum FT4 and TSH were then measured in both groups of the patients.

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.

Oxidative stress has been reported to play a role in melasma pathophysiology. The objective of the study is to compare oral superoxide dismutase (GLISODin) to placebo, in combination to sunscreen to decrease melasma severity.

The treatment of melasma and the maintenance of depigmentation represent a challenge due to its frequent recurrences. Pathophysiological mechanisms and factors have been linked to melasma such as inflammation, sun exposure, increased CD4+ T lymphocytic infiltrate and IL-17 in damaged skin. Tissue-resident memory T cells (Trm), derived from naïve T lymphocytes, are associated with the recurrence of lesions at the same sites but they have not been described in melasma. This a Cross-sectional, prospective analytical study. 20 female patients, 18 to 55 years of age, with diagnosis of melasma and mMASI score of at least 7, at least 1-year duration, lesional and perilesional skin biopsies were taken for PCR and DIF. The objective is to determine the transcription factors of Trm cells in malar melasma.

Melasma is an acquired hyperpigmentary disorder that commonly affects women from Asia and Latin-America.There is evidence of subclinical inflammation supported by diffuse spectrometry and by prominent inflammatory cells in affected areas; however this infiltrate and its inflammatory mediators remains unexplored. Chronic inflammation induces melanogenesis and angiogenesis; thus, it could be linked to its recurrent nature.Therefore, the aim of this study is to describe the inflammatory cellular infiltrate, and the expression of main inflammatory and angiogenic mediators in this condition, as well as to explore its relationship with severity of disease. Using histological, histochemistry, immunohistochemistry, and quantitative real-time PCR, we evaluated melasma lesions from 20 healthy female patients with malar melasma without specific solar exposure or photoprotection measures within the previous 3 weeks and compared them to non lesional skin.