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Changes After Prolonged Exposure to Sunlight: A Study of Factors Influencing Actinic Degeneration

Changes After Prolonged Exposure to Sunlight: A Study of Factors Influencing Actinic Degeneration Abstract Sunlight may have many effects on the skin, and one of the most important both clinically and cosmetically is aging. Many laymen, unaware of the fact that exposure to the harmful ultraviolet rays of sunlight causes aging, are becoming sun fadists. Gross changes in actinically damaged skin are a dry, coarse, leathery appearance, laxity with wrinkling, and various pigmentary changes. Frequently in elderly and even in some relatively young white adults there is a striking difference between light-exposed regions and those protected by clothing. A weather-beaten farmer often appears considerably older than a physician of comparable age.1 Since Negro skin has natural protection in its high melanin content, elderly Negroes often appear deceptively young. According to Blum, the thickness of the corneal and granular layers is very important in determining the skin's response to the ultraviolet radiation which strikes its surface.2 That these layers must play an important References 1. Knox, J. M.: Harmful Effects of Sunlight , Texas J. Med. 56:653-656, 1960. 2. Blum, H. F.: Sunlight and Cancer of the Skin , J. Nat. Cancer Inst. 1:397-421, 1940. 3. Bachem, A., and Reed, C. I.: Skin and Radiation , Arch. Phys. Ther. 12:581-590, 1931. 4. Mackie, B. S., and McGovern, V. J.: The Mechanism of Solar Carcinogenesis , A.M.A. Arch. Derm. 78:218-244, 1958.Crossref 5. Thomson, M. L.: Relative Efficiency of Pigment and Horny Layer Thickness in Protecting the Skin of Europeans and Africans Against Solar Ultraviolet Radiation , J. Physiol. 127:236-246, 1955. 6. Bachem, A., and Reed, C. I.: The Penetration of Light Through the Human Skin , Amer. J. Physiol. 97:86-91, 1931. 7. Loewi, G.; Glynn, L. E., and Darling, J.: Studies on Nature of Collagen Degeneration , J. Path. Bact. 80:1-8, 1960.Crossref 8. Kirby-Smith, J. S.; Blum, H. F., and Grady, H. G.: Penetration of Ultraviolet Radiation into Skin as a Factor in Carcinogenesis , J. Nat. Cancer Inst. 2:403-412, 1942. 9. Magnusson, A. H. W.: Skin Cancer , Acta Radiol. Supp. 22, pp. 1-287, 1935. 10. Knox, J. M.; Guin, J. D., and Cockerell, E. G.: Benzophenones: Ultraviolet Light Absorbing Agents , J. Invest. Derm. 29:435-444, 1957.Crossref 11. Cockerell, E. G., and Knox, J. M.: Experimental Ultraviolet Carcinogenesis , Texas J. Med. 56:657-660, 1960. 12. Knox, J. M.; Griffin, A. C., and Hakim, R. E.: Protection from Ultraviolet Carcinogenesis , J. Invest. Derm. 34:51-56, 1960. 13. Lansing, A. I.: Aging of Elastic Tissue and the Systemic Effects of Elastose , Ciba Foundation Colloquia on Aging, London, J. & A. Churchill, Ltd,. 1955. 14. Rothman, S.: Physiology and Biochemistry of the Skin , The University of Chicago Press, Chicago, 1954. 15. Lorincz, A. L.: Physiology of the Aging Skin , Illinois Med. J. 117:59-62, 1960. 16. Wells, G. C.: Senile Changes of the Skin in Man , J. Amer. Geriat. Soc. 2:535-549, 1954. 17. Gersh, I., and Catchpole, H. R.: The Organization of Ground Substance and Basement Membrane and Its Significance in Tissue Injury, Disease and Growth , Amer. J. Anat. 85:457-521, 1949.Crossref http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Dermatology American Medical Association

Changes After Prolonged Exposure to Sunlight: A Study of Factors Influencing Actinic Degeneration

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Publisher
American Medical Association
Copyright
Copyright © 1961 American Medical Association. All Rights Reserved.
ISSN
0003-987X
eISSN
1538-3652
DOI
10.1001/archderm.1961.01580150113018
Publisher site
See Article on Publisher Site

Abstract

Abstract Sunlight may have many effects on the skin, and one of the most important both clinically and cosmetically is aging. Many laymen, unaware of the fact that exposure to the harmful ultraviolet rays of sunlight causes aging, are becoming sun fadists. Gross changes in actinically damaged skin are a dry, coarse, leathery appearance, laxity with wrinkling, and various pigmentary changes. Frequently in elderly and even in some relatively young white adults there is a striking difference between light-exposed regions and those protected by clothing. A weather-beaten farmer often appears considerably older than a physician of comparable age.1 Since Negro skin has natural protection in its high melanin content, elderly Negroes often appear deceptively young. According to Blum, the thickness of the corneal and granular layers is very important in determining the skin's response to the ultraviolet radiation which strikes its surface.2 That these layers must play an important References 1. Knox, J. M.: Harmful Effects of Sunlight , Texas J. Med. 56:653-656, 1960. 2. Blum, H. F.: Sunlight and Cancer of the Skin , J. Nat. Cancer Inst. 1:397-421, 1940. 3. Bachem, A., and Reed, C. I.: Skin and Radiation , Arch. Phys. Ther. 12:581-590, 1931. 4. Mackie, B. S., and McGovern, V. J.: The Mechanism of Solar Carcinogenesis , A.M.A. Arch. Derm. 78:218-244, 1958.Crossref 5. Thomson, M. L.: Relative Efficiency of Pigment and Horny Layer Thickness in Protecting the Skin of Europeans and Africans Against Solar Ultraviolet Radiation , J. Physiol. 127:236-246, 1955. 6. Bachem, A., and Reed, C. I.: The Penetration of Light Through the Human Skin , Amer. J. Physiol. 97:86-91, 1931. 7. Loewi, G.; Glynn, L. E., and Darling, J.: Studies on Nature of Collagen Degeneration , J. Path. Bact. 80:1-8, 1960.Crossref 8. Kirby-Smith, J. S.; Blum, H. F., and Grady, H. G.: Penetration of Ultraviolet Radiation into Skin as a Factor in Carcinogenesis , J. Nat. Cancer Inst. 2:403-412, 1942. 9. Magnusson, A. H. W.: Skin Cancer , Acta Radiol. Supp. 22, pp. 1-287, 1935. 10. Knox, J. M.; Guin, J. D., and Cockerell, E. G.: Benzophenones: Ultraviolet Light Absorbing Agents , J. Invest. Derm. 29:435-444, 1957.Crossref 11. Cockerell, E. G., and Knox, J. M.: Experimental Ultraviolet Carcinogenesis , Texas J. Med. 56:657-660, 1960. 12. Knox, J. M.; Griffin, A. C., and Hakim, R. E.: Protection from Ultraviolet Carcinogenesis , J. Invest. Derm. 34:51-56, 1960. 13. Lansing, A. I.: Aging of Elastic Tissue and the Systemic Effects of Elastose , Ciba Foundation Colloquia on Aging, London, J. & A. Churchill, Ltd,. 1955. 14. Rothman, S.: Physiology and Biochemistry of the Skin , The University of Chicago Press, Chicago, 1954. 15. Lorincz, A. L.: Physiology of the Aging Skin , Illinois Med. J. 117:59-62, 1960. 16. Wells, G. C.: Senile Changes of the Skin in Man , J. Amer. Geriat. Soc. 2:535-549, 1954. 17. Gersh, I., and Catchpole, H. R.: The Organization of Ground Substance and Basement Membrane and Its Significance in Tissue Injury, Disease and Growth , Amer. J. Anat. 85:457-521, 1949.Crossref

Journal

Archives of DermatologyAmerican Medical Association

Published: Sep 1, 1961

References