脆弱X症候群
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English Journal
- Genetics of premature ovarian failure.
- Bilgin EM1, Kovanci E.
- Current opinion in obstetrics & gynecology.Curr Opin Obstet Gynecol.2015 Jun;27(3):167-74. doi: 10.1097/GCO.0000000000000177.
- PURPOSE OF REVIEW: To provide an overview on the genetic basis of premature ovarian failure (POF) with specific attention to recently published molecular genetic studies.RECENT FINDINGS: POF is an insidious cause of female infertility. Despite enormous efforts to understand the genetic pathogenesis,
- PMID 25919233
- Fragile X premutation carriers: A systematic review of neuroimaging findings.
- Brown SS1, Stanfield AC2.
- Journal of the neurological sciences.J Neurol Sci.2015 May 15;352(1-2):19-28. doi: 10.1016/j.jns.2015.03.031. Epub 2015 Mar 27.
- BACKGROUND: Expansion of the CGG repeat region of the FMR1 gene from less than 45 repeats to between 55 and 200 repeats is known as the fragile X premutation. Carriers of the fragile X premutation may develop a neurodegenerative disease called fragile X-associated tremor/ataxia syndrome (FXTAS). Rec
- PMID 25847019
- Emergency department and inpatient hospitalizations for young people with fragile x syndrome.
- McDermott S, Hardin JW, Royer JA, Mann JR, Tong X, Ozturk OD, Ouyang L.
- American journal on intellectual and developmental disabilities.Am J Intellect Dev Disabil.2015 May;120(3):230-43. doi: 10.1352/1944-7558-120.3.230.
- We compared hospital encounters between adolescents and young adults with fragile X syndrome (FXS) to peers with intellectual disability (ID) from other causes, autism spectrum disorder (ASD), and a comparison group without these conditions matched by gender, age, and insurance coverage. Those with
- PMID 25928435
Japanese Journal
- A New X-Linked Mental Retardation Syndrome with Diplegia and Delayed Myelination
- Ehara Hiroaki,Ohtani Kyoichi,Yamamoto Toshiyuki,Ohno Kousaku,Takeshita Kenzo,Kanemura Yonehiro,Yamasaki Mami
- Yonago Acta medica 49(3), 77-82, 2006-09
- … Fragile X (FRAXA), fragile XE (FRAXE), proteolipid protein and L1 cell adhesion molecule (L1CAM) genes were normal. …
- NAID 120001352374
- Comparative Cytogenetic and PCR Studies in Fragile X Syndrome
- GAMBARINI Greicy H. R.,DELLA-ROSA Valter A.,MORAES Ana Maria S. Machado de
- Cytologia : international journal of cytology 70(3), 233-237, 2005-09-30
- NAID 10016378028
- Comparative Cytogenetic and PCR Studies in Fragile X Syndrome
- Gambarini Greicy H. R.,Della-Rosa Valter A.,Machado de Moraes Ana Maria S.
- CYTOLOGIA 70(3), 233-237, 2005
- … Results from cytogenetic and molecular studies by Polymerase Chain Reaction (PCR) techniques in 34 patients suspected of fragile X syndrome (FRAXA) are compared. … Although PCR technique guaranteed fast FRAXA search, the cytogenetic study was as efficient as the PCR technique to diagnose fragile chromosome X syndrome in mentally retarded subjects. …
- NAID 130004447885
Related Links
- FRAXA is a parent-run nonprofit organization finding a cure for Fragile X Syndrome, the most common inherited cause of intellectual disabilities and autism ... As the parent of a Fragile X young man, I know that my contribution to ...
- 脆弱X症候群協会研究基金(FRAXA Research Foundation) 脆弱X症候群協会(FRAXA)は合衆国立の501(c)(3)に基づく非営利団体であり,患者両親や医療専門家により運営されています.大部分はボランティアにより構成されています.1994 ...
Related Pictures
★リンクテーブル★
[★]
- 英
- fragile X syndrome FRAXA
- 同
- 脆弱X染色体症候群、
- 関
- MSH 2遺伝子 MSH
概念
- 定義:FMR-1遺伝子がコードしているFMR-1タンパクの低下、欠損によるX連鎖遺伝性精神遅滞(PED.219)
病因
- FMR-1遺伝子の5'末端UTR上のCGGリピートが増加することによる
- Xq27.3にマップされる
- CGGリピート
- 正常:29
- 前突然変異:52-200
- 完全突然変異:230-4000
- プロモーター領域のCpGがメチル化を受けるために、FMR-1の発現が抑制されることによる
疫学
- 原因の判明している精神遅滞の中ではダウン症候群に次いで多い
- 欧米では一般男性1/4,000人,女性1/10,000人。(♂1,500人対1人、♀2,500人対1人(PED.219)
- 脆弱X突然変異を有する人の中で男性の20%が無症状、女性の30%に軽度の知的障害が認められる。
遺伝形式
病変形成&病理
症状
- 精神遅滞,細長い顔,突出した下顎,大耳介,小児期の自閉・多動,思春期以降の巨大睾丸(80%)
診断
検査
治療
予後
予防
[★]
FRAXA症候群、脆弱X症候群
- 関
- fragile X syndrome
[★]
- 英
- FRAXA syndrome
- 関
- 脆弱X症候群
[★]
- 関
- 骨粗鬆症
参考
- http://www.shef.ac.uk/FRAX/tool.jsp?lang=jp
[★]
- 関
- c-Fos protein、Fos-related antigen、proto-oncogene protein c-Fos