Physical Factors in Sun Exposures

Daniels, Farrington

doi:10.1001/archderm.1962.01590030056007

Cited by 16 publications

(2 citation statements)

References 3 publications

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“…Since it has been established that the erythemogenic portion of the solar spectrum fall between 2,900 and 3,130 A [21], it is of significance that use of the benzophenones, which have a wide UV absorption spectra, have been shown to provide excellent protection from these erythema-producing UV wavelengths [22,23]. The benzophenones have also been reported to screen those wavelengths which cause pigmentation and photosensitivity phenom ena [22], A representative substituted benzophenone, 3-benzoyl-4-hydroxy-6-methyoxy-benzensulphonic acid, was described by K nox el al.…”

Section: Discussionmentioning

confidence: 99%

The Protective Effect of a Sunscreen upon the Lysosomes of Ultraviolet-Irradiated Skin

Fand

1972

Dermatology

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It has been generally accepted in the literature that the substituted benzophenones, having wide-spectrum ultraviolet absorbing properties, provide excellent protection from the harmful effects of sunburn. Evidence is here presented which indicates that release of lysosomal acid phosphatase and acid protease was facilitated in cultured human foreskin and rodent skin in vivo after exposure to UV radiation, without protection by 10% sulisobenzone. Under these experimental conditions, there occurred in human foreskin an accelerated leakage of acid phosphatase from membrane-bound sites evidenced by diffuse histochemical staining.

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Section: Discussionmentioning

confidence: 99%

The Protective Effect of a Sunscreen upon the Lysosomes of Ultraviolet-Irradiated Skin

Fand

1972

Dermatology

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“…The chief disadvantages are ( l) less than 0.2 per cent of the active ultraviolet rays shorter than 3200 A. and no rays shorter than 2900 A. reach the earth's surface from the sun, and (2) the sun's active rays are available only during the late spring and summer in most geographical areas. 13 Thus the sun generally is an inefficient, unpredictable source. * To augment the availability of natural sunlight, approximately 75 new types of ultraviolet and sun lamps have been developed in the last 30 years.…”

Section: Available Therapeutic Sourcesmentioning

confidence: 99%