العربية
中国
Français
Deutsch
Ελληνική
हिन्दी
Italiano
日本語
Português
Русский
EspañolCOCKAYNE SYNDROME
(Redirected from Cockayne\'s syndrome)
'Cockayne syndrome' (or "Weber-Cockayne syndrome", or "Neill-Dingwall Syndrome") is a rare, autosomal recessive disorder characterized by growth failure, impaired development of the nervous system, abnormal sensitivity to sunlight (photosensitivity), and premature aging. Hearing loss and eye abnormalities (pigmentary retinopathy) are other common features, but problems with any or all of the internal organs are possible. It is named after English physician Edward Alfred Cockayne (1880-1956).
★ CS Type I, or the “classic form”, is characterized by normal fetal growth with the onset of abnormalities in the first two years of life. Impairment of vision, hearing, and the central and peripheral nervous system progressively degenerate until death in the first or second decade of life.
★ CS Type II, otherwise known as connatal CS, involves very little neurological development after birth. Death usually occurs by age 7.
★ CS Type III is rare and is characterized by late onset. It is milder than Type I and Type II.
★ Xeroderma-pigmentiosum-Cockayne syndrome (XP-CS) occurs when an individual also suffers from Xeroderma pigmentosum, another DNA repair disease. Some symptoms of each disease are expressed.
The condition is also classified genetically as follows:
★ (TYPE A)
★ (TYPE B)
★ (TYPE C)
Mutations in the ERCC6 and ERCC8 genes cause Cockayne syndrome. The proteins made by the ERCC8 and ERCC6 genes are involved in repairing damaged DNA by the transcription-coupled repair mechanism, particularly the DNA in active genes. If either tr the ERCC6 gene is altered, DNA damage is not repaired. As this damage accumulates, it can lead to malfunctioning cells or cell death, and the signs and symptoms of Cockayne syndrome.
Small head size, short stature, sunken eyes, "aged" look, may or may not have sensitivity to sunlight.
★ Accelerated aging disease
★ Biogerontology
★ Degenerative disease
★ Genetic disorder
Share and Care Cockayne Syndrome Network
★
★ ''This article incorporates public domain text from The U.S. National Library of Medicine''
'Cockayne syndrome' (or "Weber-Cockayne syndrome", or "Neill-Dingwall Syndrome") is a rare, autosomal recessive disorder characterized by growth failure, impaired development of the nervous system, abnormal sensitivity to sunlight (photosensitivity), and premature aging. Hearing loss and eye abnormalities (pigmentary retinopathy) are other common features, but problems with any or all of the internal organs are possible. It is named after English physician Edward Alfred Cockayne (1880-1956).
| Contents |
| Forms of Cockayne syndrome |
| Causes |
| Physical appearance |
| See also |
| External links |
Forms of Cockayne syndrome
★ CS Type I, or the “classic form”, is characterized by normal fetal growth with the onset of abnormalities in the first two years of life. Impairment of vision, hearing, and the central and peripheral nervous system progressively degenerate until death in the first or second decade of life.
★ CS Type II, otherwise known as connatal CS, involves very little neurological development after birth. Death usually occurs by age 7.
★ CS Type III is rare and is characterized by late onset. It is milder than Type I and Type II.
★ Xeroderma-pigmentiosum-Cockayne syndrome (XP-CS) occurs when an individual also suffers from Xeroderma pigmentosum, another DNA repair disease. Some symptoms of each disease are expressed.
The condition is also classified genetically as follows:
★ (TYPE A)
★ (TYPE B)
★ (TYPE C)
Causes
Mutations in the ERCC6 and ERCC8 genes cause Cockayne syndrome. The proteins made by the ERCC8 and ERCC6 genes are involved in repairing damaged DNA by the transcription-coupled repair mechanism, particularly the DNA in active genes. If either tr the ERCC6 gene is altered, DNA damage is not repaired. As this damage accumulates, it can lead to malfunctioning cells or cell death, and the signs and symptoms of Cockayne syndrome.
Physical appearance
Small head size, short stature, sunken eyes, "aged" look, may or may not have sensitivity to sunlight.
See also
★ Accelerated aging disease
★ Biogerontology
★ Degenerative disease
★ Genetic disorder
External links
Share and Care Cockayne Syndrome Network
★
★ ''This article incorporates public domain text from The U.S. National Library of Medicine''
This article provided by Wikipedia. To edit the contents of this article, click here for original source.
psst.. try this: add to faves
