medigraphic.com
ISSN 0016-3813 (Print)

2008, Number 1

<< Back Next >>

Gac Med Mex 2008; 144 (1)

Absorción ultravioleta de los protectores solares para prescripción en México

Castanedo-Cázares JP, Torres-Álvarez B, Araujo-Andrade C, Castanedo-Tardan MP, Moncada B

Language: Spanish
References: 21
Page: 35-38
PDF size: 60.30 Kb.


ABSTRACT

Background: An appropriate sunscreen should provide high and broad ultraviolet protection both for the B and A range. The objective was quantify the ultraviolet absorption spectrum in sunscreens available for medical prescription, and analyze its relationship with the labeled Sun Protection Factor (SPF).
Material and methods: Thirty-nine sunscreens were analyzed in vitro using ultraviolet spectroscopy following exposure to simulated solar irradiation.
Results: Fifty-six percent of sunscreens absorbed 90% or more of ultraviolet radiation. Seventy-five percent (n=34) absorbed more than 95% of ultraviolet B radiation, and 46% (n=18) more than 90% of ultraviolet A. There was no significant association between ultraviolet absorption and SPF.
Conclusion: We were unable to estimate ultraviolet absorption only by its SPF. Protection differed considerably among products with similar SPF. Our study highlights regulation deficiencies in marketing practices of these products.


REFERENCES

  1. Castanedo-Cázares lP, Lepe V, Gordillo-Moscoso A, Moncada B. Ultraviolet radiation doses in Mexican students. Salud Publica Mex 2003;45:439-444.

  2. Koh HK, Geller AC, Miller DR, Grossbart T A, Lew RA. Prevention and early detection strategies for melanoma and skin cancer. Arch DermatoI 1996;132:436-443.

  3. Wikonkal NM, Brash DE. Ultraviolet radiation induced signature mutations in photocarcinogenesis. J Invest Dermatol Symp Proc 1999;4:6-10.

  4. Yaar M, Gilchrest BA. Aging and photoaging: postulated mechanisms and effectors. J Invest Dermatol Symp Proc 1998;3:47-51.

  5. Nishigori C, Yarosh DB. Donawho C, Kripke ML. The immune system in ultraviolet carcinogenesis. J Invest Dermatol Symp Proc 1996;1:143-146.

  6. Sliney DH. Epidemiological studies of sunlight and cataract: the critical factor of ultraviolet exposure geometry. Ophtalmic Epidemiol1994;1:107-119.

  7. Cole CA, Forbes PD, Davies RE. An action spectrum for ultravioleta photocarcinogenesis. Photochem PhotobioI 1986;36:187-191.

  8. Serre I, Cano JP, Picot MC, Meynadier J, Meunier L. Immunosuppression induced by acute solar-simulated ultraviolet exposure in humans: prevention by a sunscreen with a sun protection factor of 15 and high ultravioleta A protection. J Am Acad Dermatol 1997;37:187-194.

  9. Stem RS. Clinical practice. Treatment of photoaging. N Engl J Med 2004;350:1526--1534.

  10. Krutmann I. Ultraviolet A radiation-induced biological effects in human skin: relevance for photoaging and photodermatosis. J Dermatol Sci 2000;23(Suppl 1):S22-S226.

  11. Buller DB, Geller AC, Cantor M, Buller MK, Rosseel K, Benjes L, et al. Sun protection policies and environmental features in US elementary schools. Arch DermatoI 2002;138:771-774.

  12. Thompson SC, Jolley D, Marks R. Reduction of solar keratoses by regular sunscreen use. N Engl J Med 1993;329:1147-1151.

  13. Azurdia RM, Pagliaro JA, Rhodes LE. Sunscreen application technique in photosensitive patients: a quantitative assessment of the effect of education. Photodermatol Photoimmunol Photomed 2000;16:53-56.

  14. Norma Oficial Mexicana. NOM-141-SSAI-1995. Bienes y servicios. Etiquetado para productos de perfumería y belleza preenvasados. Secretaría de Salud, México.

  15. Diccionario de Especialidades Farmacéuticas (DEF). José Antonio Solís Sánchez, editor. México: Thomson PLM, edición 51; 2005.

  16. Castanedo-Cázares JP, Torres-Álvarez B, Briones-Estevis S, Moncada B. La inconsistencia del factor de protección solar (FPS) en México. El caso de los filtros para piel oleosa. Gac Med Mex 2005;141:111-114.

  17. Department of Health and Human Services FDA, USA. Sunscreen Drug Products For Over-The-Counter Human Use; Final Monograph. Federal Registrer 1999;64;27666-27693.

  18. Diffey BL, Tanner PR, Matts P J, Nash JF. In vitro assessment of the broad–spectrum ultraviolet protection ofsunscreen products. J Am Acad DermatoI 2000;43:1024-1035.

  19. Kullavanijaya P, Lim HW. Photoprotection. J Am Acad DermatoI 2005;52:937-958.

  20. Mitchell D. Revisiting the photochemistry of solar UVA in human skin. Proc Natl Acad Sci USA. 2006;103:13567-13568.

  21. Castanedo-Cázares JP, Torres-Álvarez B, Medellín-Pérez ME, Aguilar- Hernández GA, Moncada B. Conocimientos y actitudes de la población mexicana con respecto a la radiación solar. Gac Med Mex 2006;142:451-455.




2020     |     www.medigraphic.com