Subcutaneous and Cutaneous Melanins in Rhabdomys: Complementary Ultraviolet Radiation Shields
نویسندگان
چکیده
منابع مشابه
Animal models of ultraviolet radiation (UVR)-induced cutaneous melanoma.
The incidence of cutaneous melanoma continues to increase in many parts of the world including the United States. The American Cancer Society predicts that there will be approximately 53,600 new cases of melanoma in the United States during 2002 and that there will be 7,400 deaths from melanoma during the same time period. Increased understanding of the underlying mechanisms and risk factors in...
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The hypothalamic-pituitary-adrenal (HPA) axis maintains basal and stress-related homeostasis in vertebrates. Skin expresses all elements of the HPA axis including corticotropin-releasing hormone (CRH), proopiomelanocortin (POMC), ACTH, β-endorphin (β-END) with corresponding receptors, the glucocorticoidogenic pathway, and the glucocorticoid receptor (GR). To test the hypothesis that cutaneous r...
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While structurally complex benthic egg capsules can lower the vulnerability of gastropod embryos to a variety of environmental risks, including predation, desiccation, osmotic shock, and bacterial attack, little is known about their ability to shield embryos from ultraviolet radiation (UV) I examined the exposure of benthic egg capsules of the marine intertidal gastropod Nucella emarginata to s...
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Background and Objective: Monitoring the amount of ultraviolet radiation from sunlight can provide a basis for assessing people's exposure, raise public awareness and warn people against this radiation. Measuring the sun's ultraviolet index over a working period is an accurate choice to achieve this goal. Materials and Methods: In this study, the amount of solar UV index in one of the outdoor ...
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Presence of fungal agents in lesions of two patients in Tehran was studied. One of them had clinical symptoms of mycetoma in his foot, and the other had a skin infection in his arm. Examination of the lesions indicated Nocardia asteroides. These patients did not show any evidence of nocardia infection in other parts of the body. Negative results were obtained from the cultures of blood and...
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ژورنال
عنوان ژورنال: Journal of Mammalogy
سال: 1982
ISSN: 1545-1542,0022-2372
DOI: 10.2307/1380666