2009
DOI: 10.1590/s0365-05962009000300008
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Bases biomoleculares do fotoenvelhecimento

Abstract: Resumo:Com o aumento da expectativa de vida, o estudo do processo de envelhecimento orgânico tem sido estimulado. O envelhecimento da pele, órgão que espelha os sinais do tempo, é processo de deterioração progressiva, tempo-dependente, e pode ser intensificado pela exposição solar, então designado fotoenvelhecimento. O dano das radiações sobre diversas estruturas celulares e cutâneas leva a alterações morfológicas nesses componentes, fruto de modificações biomoleculares. Muitas pesquisas são desenvolvidas com … Show more

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Cited by 35 publications
(26 citation statements)
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“…This type of aging is a cumulative process and depends on the amount of solar exposure [25]. Skin changes caused by solar exposure are presented as yellowish skin and irregular pigmentation [25,26].…”
Section: Evaluation Of Skin Pigmentationmentioning
confidence: 99%
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“…This type of aging is a cumulative process and depends on the amount of solar exposure [25]. Skin changes caused by solar exposure are presented as yellowish skin and irregular pigmentation [25,26].…”
Section: Evaluation Of Skin Pigmentationmentioning
confidence: 99%
“…In the skin of the elderly the following occur: a decrease in the function of connective tissue, a degradation of elastic fibers, a lower amount of oxygen reaches the tissues, a higher loss of water occurs, and a hardening of collagen fibers takes place, resulting in the formation of wrinkles or expression lines [15,17,21,25].…”
Section: Wrinkle Evaluationmentioning
confidence: 99%
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“…The deterioration of connective tissue functioning means the fat pads under the skin are no longer uniform and the degeneration of elastic fibers, combined with a slower rate of tissue oxygen exchange, causes dehydration of the skin, resulting in wrinkles and facial sagging. 1,2 The face is prematurely affected by signs of aging, such as the formation of wrinkles. A complex system of muscles, fascia and skin interconnect to form what is almost a single tissue, with similar movements in different facial expression positions.…”
Section: Introductionmentioning
confidence: 99%
“…As a result the NLF has been adopted as a reference, as by measuring the length and angulation of the fold the degree of facial aging can be inferred. 1,4,5 Cephalometrics have also emerged as a method of increasing the accuracy of measuring facial aging. This is a technique that geometrically analyzes the anatomical complexity of the human head.…”
Section: Introductionmentioning
confidence: 99%