Related Experiment Videos
[Photoaging of a skin]
Ryszard Galus1, Łukasz Zandecki, Marek Antiszko
1Akademia Medyczna w Warszawie, Katedra i Zakład Histologii i Embriologii Centrum Biostruktury. rgalus@ib.amwaw.edu.pl
Abstract:
Photoaging is a skin aging caused by long-term exposure to the ultraviolet radiations of the sun. Ultraviolet activates activating protein-1 and generate reactive oxygen species which play a substantial role in collagen degradation. Clinically, photoaged skin appears as a coarse with deep wrinkles. Presently there are available several agents to reverse the photodamage. There is conclusive evidence that synthetic vitamin A derivatives are the most effective in the treatment of photoaging. Erythema and scaling may be experienced initially.
Related Concept Videos
Pigmentation
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...
The Effect of Aging on Tissues
Changes in Skin Color: Clinical Perspectives
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
Renewal of Skin Epidermal Stem Cells
Skin Cancer
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
Aging
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...