photodamage การใช้

• In addition to that, the laser may cause photodamage and sample heating.
• Each photosynthetic organism has a specific level of sensitivity to photodamage of compounds needed for survival, such as proteins.
• Photoinduction takes place with a brief exposure to light ( wavelength is tetrazole-dependent ) to minimize photodamage to cells.
• Knockouts for Rubisco and photosystem II complexes, which would experience more photodamage than normal, exhibit an upregulation of plastid terminal oxidase.
• Carotenoids serve two key roles in plants and algae : they absorb light energy for use in photosynthesis, and they protect chlorophyll from photodamage.
• "There is limited evidence that tazarotene and isotretinoin benefit patients with moderate photodamage on the face : both are associated with skin irritation and erythema ."
• Vitamin A, also known as retinoids, benefits the skin by normalizing keratinization, downregulating sebum production which contributes to acne, and reversing and treating photodamage, striae, and cellulite.
• In addition to tretinoin, which has been associated with greater skin improvements with high concentrations, tazarotene and isotretinoin creams are also found to be effective for photodamage, but at the expense of skin irritation.
• It has been reported in many cases that fairer individuals who have lesser melanin pigment show more dermal DNA photodamage, infiltrating neutrophils, keratinocyte activation, IL-10 expression and increased MMPs after UV exposure.
• While many studies agree with the stress-protective role of the enzyme, one study showed that overexpression of " PTOX " increases the production of reactive oxygen species and causes more photodamage than normal.
• Photodamage can also be characterized as a disorganization of the collagen fibrils that constitute most of the connective tissue, and the accumulation of abnormal, amorphous, elastin-containing material, a condition known as actinic elastosis.
• In the second process, triggered primarily by UVB, there is an increase in production of melanin ( melanogenesis ), which is the body's reaction to direct DNA photodamage ( formation of pyrimidine dimers ) from UV radiation.
• Multiphoton excitation in laser scanning fluorescence microscopy provides for high resolution, high signal-to-noise imaging in living cells and deep in turbid tissues in vivo and significantly reduces photodamage and minimizes image degradation due to scattering and autofluorescence.
• However, in order to cause true melanogenesis-tanning by means of UV exposure, some direct DNA photodamage must first be produced, and this requires UVB exposure ( as present in natural sunlight, or sunlamps that produce UVB ).
• "Conceivably Retin-A could be used not only to repair photodamage, but prevent photodamage in healthy skin, " said Dr . Barbara A . Gilchrest, chairman of the dermatology department at the Boston University School of Medicine.
• "Conceivably Retin-A could be used not only to repair photodamage, but prevent photodamage in healthy skin, " said Dr . Barbara A . Gilchrest, chairman of the dermatology department at the Boston University School of Medicine.
• In 2009, Ahava Dermud range of skincare products has been shown to have protective, anti-oxidant and anti-inflammatory properties that can antagonize biological effects of UVB radiation on skin, reducing skin photodamage and photoaging, and reducing oxidative stress and inflammation in skin pathologies.
• Photoaging may be defined as skin changes caused by chronic exposure to UV light . "'Photodamage "', implies changes beyond those associated with aging alone, defined as cutaneous damage caused by chronic exposure to solar radiation and is associated with emergence of neoplastic lesions.
• IPL is employed in the treatment of a range of dermatological conditions including photodamage induced dyspigmentation and vascular changes, poikiloderma of Civatte, rosacea, acne vulgaris, sebaceous gland hyperplasia, broken capillaries / telangiectases, vascular lesions ( small blood vessels ), pigmented lesions ( freckles, liver spots, birth marks ), melasma, actinic keratosis, photorejuvenation, basal cell carcinoma, and Bowen's disease ( squamous cell carcinoma ).