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A long-term evaluation of erythema and pigmentation induced by ultraviolet radiations of different wavelengths.
Skin Res Technol. 2007 Nov; 13(4):360-8.SR

Abstract

BACKGROUND/AIMS

The long-term reactions of human skin by different ultraviolet (UV)-wavebands were not reported. This study was to investigate a time course of erythema and pigmentation induced by UVA-1, broadband UVA (BBUVA), narrowband UVB (NBUVB) and broadband UVB (BBUVB).

METHODS

Ten volunteers participated in this study for 6 months. Four skin areas, from the back of each subject, were irradiated with two minimal erythema dose (MED) of four different UV wavelengths corresponding to UVA-1, BBUVA, NBUVB and BBUVB.

RESULTS

For both UVA-1 and BBUVA, erythema and pigmentation were most pronounced immediately and 1 h after exposure. Erythema rapidly diminished but pigmentation persisted throughout the study. For both NBUVB and BBUVB, test areas reacted with erythema of maximum intensity at 1 and 2 days, respectively. A maximum tanning was reached at 3-6 days for NBUVB and 4-7 days for BBUVB, and the return toward the original point was at 1 and 3 months, respectively.

CONCLUSION

Two MED of UVA produced far prolonged erythema and pigmentation than UVB. For UVA, UVA-1 and BBUVA showed similar intensity and time course of skin reaction. For UVB, erythema and pigmentation produced by NBUVB were milder in intensity and shorter in a time course than those by BBUVB.

Authors+Show Affiliations

Department of Dermatology, Kosin University College of Medicine, Busan, South Korea.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17908186

Citation

Suh, K-S, et al. "A Long-term Evaluation of Erythema and Pigmentation Induced By Ultraviolet Radiations of Different Wavelengths." Skin Research and Technology : Official Journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI), vol. 13, no. 4, 2007, pp. 360-8.
Suh KS, Roh HJ, Choi SY, et al. A long-term evaluation of erythema and pigmentation induced by ultraviolet radiations of different wavelengths. Skin Res Technol. 2007;13(4):360-8.
Suh, K. S., Roh, H. J., Choi, S. Y., Jeon, Y. S., Doh, K. S., Bae, J. H., & Kim, S. T. (2007). A long-term evaluation of erythema and pigmentation induced by ultraviolet radiations of different wavelengths. Skin Research and Technology : Official Journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI), 13(4), 360-8.
Suh KS, et al. A Long-term Evaluation of Erythema and Pigmentation Induced By Ultraviolet Radiations of Different Wavelengths. Skin Res Technol. 2007;13(4):360-8. PubMed PMID: 17908186.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A long-term evaluation of erythema and pigmentation induced by ultraviolet radiations of different wavelengths. AU - Suh,K-S, AU - Roh,H-J, AU - Choi,S-Y, AU - Jeon,Y-S, AU - Doh,K-S, AU - Bae,J-H, AU - Kim,S-T, PY - 2007/10/3/pubmed PY - 2008/2/1/medline PY - 2007/10/3/entrez SP - 360 EP - 8 JF - Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI) JO - Skin Res Technol VL - 13 IS - 4 N2 - BACKGROUND/AIMS: The long-term reactions of human skin by different ultraviolet (UV)-wavebands were not reported. This study was to investigate a time course of erythema and pigmentation induced by UVA-1, broadband UVA (BBUVA), narrowband UVB (NBUVB) and broadband UVB (BBUVB). METHODS: Ten volunteers participated in this study for 6 months. Four skin areas, from the back of each subject, were irradiated with two minimal erythema dose (MED) of four different UV wavelengths corresponding to UVA-1, BBUVA, NBUVB and BBUVB. RESULTS: For both UVA-1 and BBUVA, erythema and pigmentation were most pronounced immediately and 1 h after exposure. Erythema rapidly diminished but pigmentation persisted throughout the study. For both NBUVB and BBUVB, test areas reacted with erythema of maximum intensity at 1 and 2 days, respectively. A maximum tanning was reached at 3-6 days for NBUVB and 4-7 days for BBUVB, and the return toward the original point was at 1 and 3 months, respectively. CONCLUSION: Two MED of UVA produced far prolonged erythema and pigmentation than UVB. For UVA, UVA-1 and BBUVA showed similar intensity and time course of skin reaction. For UVB, erythema and pigmentation produced by NBUVB were milder in intensity and shorter in a time course than those by BBUVB. SN - 0909-752X UR - https://www.unboundmedicine.com/medline/citation/17908186/A_long_term_evaluation_of_erythema_and_pigmentation_induced_by_ultraviolet_radiations_of_different_wavelengths_ L2 - https://doi.org/10.1111/j.1600-0846.2007.00238.x DB - PRIME DP - Unbound Medicine ER -