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Photoaging of a woman. Photoaging or photoageing [1] (also known as "dermatoheliosis" [2]) is a term used for the characteristic changes to skin induced by chronic UVA and UVB exposure. [3]: 29 Tretinoin is the best studied retinoid in the treatment of photoaging. [4]
The wavelength of the light source needs to be appropriate for exciting the photosensitizer to produce radicals and/or reactive oxygen species. These are free radicals (Type I) generated through electron abstraction or transfer from a substrate molecule and highly reactive state of oxygen known as singlet oxygen (Type II). PDT is a multi-stage ...
“The rise in rates of these conditions are the by-products of a longer life span,” says Nicole Ehrhart, V.M.D., the director of Colorado State University’s Columbine Health Systems Center ...
The free radical theory of aging states that organisms age because cells accumulate free radical damage over time. [1] A free radical is any atom or molecule that has a single unpaired electron in an outer shell. [2] While a few free radicals such as melanin are not chemically reactive, most biologically relevant free radicals are highly ...
An anti-aging therapy led to an extension of life by 25% in a new animal study. The treatment significantly decreased cancer-related deaths and reduced various diseases associated with fibrosis ...
The mitochondrial theory of ageing has two varieties: free radical and non-free radical. The first is one of the variants of the free radical theory of ageing. It was formulated by J. Miquel and colleagues in 1980 [1] and was developed in the works of Linnane and coworkers (1989). [2] The second was proposed by A. N. Lobachev in 1978. [3]
Aging researchers explain what inflammaging is and how to manage chronic inflammation as you age.
Doctors are warning individuals who have turned to diabetes medications to lose weight that the drugs may result in unwanted side effects such as facial ageing.. In recent months, injectable ...