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Most types of artificial lighting emit light in the problematic wavelengths, with fluorescent lighting being the worst offender. Color temperature can be a good indicator of what light is most detrimental, as the higher the color temperature, the more violet light (380–450 nm) is emitted. Incandescent and LED lighting in the soft white range ...
X-linked dominant erythropoietic protoporphyria is a relatively mild version of porphyria with the predominant symptom being extreme photosensitivity causing severe itching and burning sensation of the skin due to the buildup of protoporphyrin IX. One possible treatment was discovered when treating an individual with supplemental iron for a ...
Plastic films can be attached to car windows and homes to filter out some of the wavelengths that could cause harm to someone's skin with this disease. Incandescent bulbs replace the normal fluorescent lamps. These bulbs release less light, which prevents the "porphyrin-exciting" wavelengths that fluorescent lights emit. [17]
X-linked dominant protoporphyria is a rare form of erythropoietic protoporphyria caused by a gain-of-function mutation in ALAS2 characterized by severe photosensitivity. [22] [23] In the autosomal recessive types, anyone who inherit a single gene may become a carrier. Generally they do not have symptoms but may pass the gene on to offspring. [24]
This June 25, 2023, image provided by Jessica Damiano shows a potted pothos plant in Hawley, Pa. Pothos plants make good office plants because they can thrive under fluorescent lighting in ...
New lighting systems have not used magnetic ballasts since the turn of the century, however some older installations still remain. Fluorescent lamps with magnetic ballasts flicker at a normally unnoticeable frequency of 100 or 120 Hz (twice of the utility frequency; the lamp is lit on both the positive and negative half-wave of a cycle).
Afamelanotide, sold under the brand name Scenesse, is a medication used to prevent phototoxicity and to reduce pain from light exposure for people with erythropoietic protoporphyria. [1] [2] [4] It is a melanocortin 1 receptor (MC 1 receptor) agonist [1] and a synthetic peptide and analogue of α-melanocyte stimulating hormone. [1]
erythropoietic protoporphyria [6] Diverse types of cancer; The virtue of elevated ZPP testing as a screen is that all of these conditions can be considered worth discovering. The fluorescent properties of ZPP in intact red cells allows the ZPP/heme molar ratio to be measured quickly, at low cost, and in a small sample volume. [7]