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Werner syndrome | |
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Classification and external resources | |
ICD-10 | E34.8 (ILDS E34.820) |
ICD-9 | 259.8 |
OMIM | 277700 |
DiseasesDB | 14096 |
MeSH | C16.320.925 |
GeneReviews |
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Werner syndrome (WS, also known as "adult progeria"[1]:573) is a rare, autosomal recessive[2] disorder characterized by the appearance of premature aging.[3] It affects about 1 in 100,000 in Japan, and 1 in 1-10 million outside of Japan.[4] Werner syndrome more closely resembles accelerated aging than any other segmental progeria, so it is often referred to as a progeroid syndrome, as it partly mimics the symptoms of progeria.
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Werner syndrome is named after Otto Werner,[5] a German scientist, who, as a student, described the syndrome as part of his doctoral thesis in 1904.
Werner syndrome is an autosomal recessive disorder.[2] The WRN gene associated with Werner Syndrome lies on chromosome 8 in humans[6] and it is the only gene known to be associated with Werner syndrome.[7] The disease is caused by a mutation in the WRN gene,[7] (or RECQL2) which codes a DNA helicase that functions 3' 5' as well as base exertion properties that also function in the same direction. Increased telomere attrition and genomic instability have been observed in Werner syndrome, and rapid telomere decay is thought to play a causal[verification needed] role in the clinical and pathological manifestations of the disease. The process by which the mutant WRN gene promotes telomere instability is unknown.
Although the symptoms manifest after 10 years, the earliest person diagnosed was six years old.[7] Following puberty, they age rapidly, so that by age 40, they often appear several decades older.
The signs of Werner syndrome are: lack of teenage growth spurt, graying of hair, hoarseness of the voice, thickening of the skin, diabetes mellitus, cataracts, hypogonadism, cancer, and atherosclerosis.[7] Werner causes a "bird-like" pinch to the nose.[7]
In people with Werner syndrome, death usually occurs by myocardial infarction or cancer[7]
In 2010, vitamin C supplementation was found to reverse the premature aging and several tissue dysfunctions in a genetically modified mouse model of the disease. Vitamin C supplementation also appeared to normalize several age-related molecular markers such as the increased levels of the transcription factor NF-κB. Vitamin C decreases activity of genes activated in human Werner syndrome, and increases gene activity involved in tissue repair.[8] Vitamin C supplementation is suspected to be beneficial in the treatment of human Werner syndrome, although there was no evidence of anti-aging activity in nonmutant mice.[8]
On the episode "Stargazer in a Puddle" from the series Bones, the victim had Werner syndrome.
Werner syndrome was featured in the film Jack, starring Robin Williams, in which his character aged four times faster than normal.
In an early cut scene from the game Metal Gear Solid 4, Hal "Otacon" Emmerich cites "classic Werner syndrome" as the most likely cause of Solid Snake's premature aging, though he goes on to say that testing had been inconclusive.
In season 3 episode 9, "The Ballad of Kevin and Tess", of TV show The 4400, Kevin is said to have Werner syndrome to hide his real condition from the public.
In The Invisible Man (2000 TV series) season 1 episode 6, "Impetus", the new character Gloria has an experimentally altered type of Werner syndrome that causes it to become contagious.
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This article incorporates public domain text from The U.S. National Library of Medicine
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リンク元 | 「ウェルナー症候群」 |
関連記事 | 「progeria」「adult」 |
プロジェリア : 約 56,300 件 プロゲリア : 約 940 件 早老 : 約 84,100 件 早老症 : 約 52,100 件 プロジェリア progeria : 約 7,000 件 プロゲリア progeria : 71 件 早老 progeria : 約 4,080 件 早老症 progeria : 約 1,610 件
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