The Dermoscopic Features of Photoaging and Its Association with Sun Index Score in the Coastal Population at Cilincing, Jakarta: A Cross-Sectional Study

Ameliorative effect of transfersome gel of kepok banana peel extract (Musa balbisiana) against photoaging in Wistar rat skin

Background

Repeated acute exposure to ultraviolet B (UVB) rays can cause photoaging. Musa balbisiana peel contains flavonoid compounds which act as antioxidants. However, the physicochemicals of flavonoids are unstable, have high molecular weight, and are easily oxidized, causing their use is still limited and transdermal delivery to be inefficient.

Aim

To investigate the ameliorative effect of transfersome gel of M. balbisiana peels against photoaging in Wistar rat skin.

Methods

Transfersome gel was characterized by transmission electron microscopy (TEM). In vivo research was used to determine the ameliorative effects of M. balbisiana peel. The composition of transfersome consists of ethanol extracts of M. balbisiana peel, soybean phosphatidylcholine, and tween 80. The gel was applied three times a week for 4 weeks with a total UVB radiation dose of 840 mJ/cm2. To evaluate the repair mechanism by measuring the degree of wrinkles, epidermal thickening, dermal thinning, collagen fiber irregularity, matrix metalloproteinase 1 (MMP-1), and transforming growth factor-β (TGF-β) expression, malondialdehyde (MDA) and tumor necrosis factor-α (TNFα) levels.

Results

TEM results show that gel transfersome M. balbisiana peel has a round morphology with a diameter of ±50 nm and no aggregation, which are defined as nanoparticles. Transfersome gel ameliorated the degree of wrinkle, epidermal thickening, dermal thinning, and irregularity of collagen fibers caused by UVB exposure, suppresses lipid peroxidation by decreasing MDA and TNFα level, also collagen imbalance by inhibiting MMP-1 expression and activating TGF-β expression, which was found statistically significantly different from non-transfersome gel group.

Conclusion

Transfersome gel of M. balbisiana peel can act as an alternative medicine to ameliorate clinical photoaging due to exposure to UVB.

The correlation between dermoscopy and clinical and pathological tests in the evaluation of skin photoaging

BACKGROUND

There are no standards for evaluating skin photoaging. Dermoscopy is a non-invasive detection method that might be useful for evaluating photoaging.

OBJECTIVE

To assess the correlation between the dermoscopic evaluation of photoaging and clinical and pathological evaluations.

METHODS

The age, clinical evaluation (Fitzpatrick classification, Glogau Photoaging Classification, and Chung's standardized image ruler), histopathology (Masson staining and MMP-1 immunohistochemistry), and dermoscopy (Hu's and Isik's) of 40 donor skin samples were analyzed statistically, and Spearman rank correlation analysis was performed.

RESULTS

There was a robust correlation between the total Hu scores and Isik dermoscopy. The correlation of dermoscopy with histopathology was higher than that of clinical evaluation methods. There is a strong correlation between telangiectases and lentigo. Xerosis, superficial wrinkle, diffuse erythema, telangiectases, and reticular pigmentation were significantly correlated with the three clinical evaluation methods. Superficial wrinkles were correlated with Masson, MMP-1, various clinical indicators, and other dermoscopic items.

CONCLUSION

There is a good correlation between dermoscopy and clinical and histopathological examination. Dermoscopy might help evaluate skin photoaging.