FIGURE 1
FROM:
UVA-Induced Modification of Catalase Charge Properties in the Epidermis Is Correlated with the Skin Phototype
Vittoria Maresca, Enrica Flori, Stefania Briganti, Emanuela Camera, Muriel Cario-André, Alain Taïeb and Mauro Picardo
BACK TO ARTICLEFigure 1.
UVA is more effective than UVB in inducing modifications of enzymatic antioxidant activities in reconstructed epidermis and the phototype of melanocytes has a role in the photoprotection. Reconstructed epidermis was irradiated with UVA or UVB. The epidermis was homogenated and enzymatic activities were determined on the supernatants by spectrophotometrical techniques. REK=reconstructed epidermis with only keratinocytes; REML=reconstructed epidermis with melanocytes and keratinocytes from low phototype subjects; REMH=reconstructed epidermis with melanocytes and keratinocytes from high phototype subjects; CTR=not-irradiated samples; UVA=reconstructed epidermis irradiated with 8 J/cm2 UVA; UVB=reconstructed epidermis irradiated with 0.15 J/cm2 UVB. Each value is the mean
SD of three determinations in duplicate. *P<0.05 in not-irradiated REML with respect to not-irradiated REMH; *
P<0.05 in UV-treated reconstructed epidermis versus not-irradiated ones; **
P<0.005 in UV-treated reconstructed epidermis versus not-irradiated ones; ***
P<0.001 in UV-treated reconstructed epidermis versus non-irradiated ones.
