ミオクローヌス三角
WordNet
- a three-sided polygon (同)trigon, trilateral
- something approximating the shape of a triangle; "the coastline of Chile and Argentina and Brazil forms two legs of a triangle"
- a percussion instrument consisting of a metal bar bent in the shape of an open triangle
- any of various triangular drafting instruments used to draw straight lines at specified angles
PrepTutorEJDIC
- 三角形 / 三角形の物 / 《米》三角定規 / (楽器の)トライアングル / 三つ組,三人組;(男女の)三角関係
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出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2014/05/17 14:25:09」(JST)
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The myoclonic triangle (also known by its eponym Triangle of Guillain-Mollaret) is an important feedback circuit of the brainstem and deep cerebellar nuclei which is responsible for modulating spinal cord motor activity.
The circuit is thus composed:
- Fibers of the rubro-olivary tract project from the parvocellular red nucleus via the central tegmental tract to the ipsilateral inferior olivary nucleus.
- The inferior olivary nucleus sends its afferents via climbing fibers in the inferior cerebellar peduncle to Purkinje cells of the contralateral cerebellar cortex.
- The Purkinje cells send their afferents to the ipsilateral dentate nucleus.
- The dentate nucleus afferents travel via the superior cerebellar peduncle to the contralateral red nucleus, thus completing the cycle.
Of note, this circuit contains a double decussation, implying that a lesion in this tract will cause ipsilateral symptoms.
The descending rubrospinal tract and reticulospinal tract originate in the red nucleus and reticular formation (which is closely associated with the central tegmental tract) respectively, thereby providing the mechanism by which this circuit exerts its effects on spinal cord motor activity.
Lesions involving this circuit may produce palatal myoclonus, one of the few involuntary movements that do not disappear during sleep. Palatal myoclonus may be seen as a component of the lateral medullary syndrome (a.k.a. Wallenberg Syndrome), if the infarction extends to involve the central tegmental tract.
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English Journal
- Blepharoclonus: anatomical localization and etiological consideration..
- Methawasin K, Bhidayasiri R, Phanthumchinda K, Kaufman L.
- Journal of the Medical Association of Thailand = Chotmaihet thangphaet.J Med Assoc Thai.2014 Sep;97(9):977-81.
- Blepharoclonus refers to myoclonic rhythmic eyelid closure. This is an extremely rare abnormal movement of the eyelids. The symptom has an ill-defned anatomical localization and hypothesized etiologies are diverse. We describe a 42 year-old woman with known poorly controlled hypertension (HTN) who p
- PMID 25536716
- Clinical and molecular features of POLG-related mitochondrial disease.
- Stumpf JD1, Saneto RP, Copeland WC.
- Cold Spring Harbor perspectives in biology.Cold Spring Harb Perspect Biol.2013 Apr 1;5(4):a011395. doi: 10.1101/cshperspect.a011395.
- The inability to replicate mitochondrial genomes (mtDNA) by the mitochondrial DNA polymerase (pol γ) leads to a subset of mitochondrial diseases. Many mutations in POLG, the gene that encodes pol γ, have been associated with mitochondrial diseases such as myocerebrohepatopathy spectrum (MCHS) diso
- PMID 23545419
- [Case of dentatorubral-pallidoluysian atrophy with onset of psychomotor retardation in infancy].
- Kanayama M1, Tsukamoto H, Miyachi T, Hamaguchi T, Fujimoto S, Ishikawa T, Togari H.
- No to hattatsu. Brain and development.No To Hattatsu.2004 Sep;36(5):407-12.
- We report a patient with dentatorubral-pallidoluysian atrophy (DRPLA). She developed normally until the age of 6 month, when she could sit by herself. However, her psychomotor development was subsequently slow with gradual appearance of equilibrium disturbances and involuntary movements such as poly
- PMID 15461030
Japanese Journal
- 乳児期後半から発達遅滞を認めた歯状核赤核淡蒼球ルイ体萎縮症(DRPLA)の1例
- 金山 学,塚本 東子,宮地 泰士,濱口 貴代,藤本 伸治,石川 達也,戸苅 創
- 脳と発達 36(5), 407-412, 2004
- 早期発症の歯状核赤核淡蒼球ルイ体萎縮症 (dentatorubral-pallidoluysian atrophy: DRPLA) の症例 (女児) を経験した.症例は生後6カ月に座位を獲得するまでは正常発達.その後, 発達遅滞が見られ, 加えて小脳失調症状を伴い, 4歳6カ月以後ミオクロニー発作が起こってからは発達の退行も見られた.脳波異常があり頭部MRIでも小脳と脳幹の萎縮などの所見が見られた …
- NAID 130004068290
- 胆嚢癌の脳幹転移により Myoclonic Seizure を呈した79才女性の剖検例
- 平井 俊策,福地 義之助,森松 光紀,沢田 晧史,岡野 一年,吉川 政己
- 日本老年医学会雑誌 7(1-2), 73-76, 1970
- … 本例は79才の女性で脳血管障害を思わせる症状で初発したが, 意織障害が徐々に進行し myoclonic scizure を呈したために最後まで診断に迷い, 剖検上, 脳幹部に胆嚢癌の転移を認めた症例であって, 転移性脳腫瘍としては非常に診しい症例と思われる. …
- NAID 130003444669
Related Links
- The myoclonic triangle (also known by its eponym Triangle of Guillain-Mollaret) is an important feedback circuit of the brainstem and deep cerebellar nuclei which is responsible for modulating spinal cord motor activity. The circuit is ...
- Note: Many of our articles have direct quotes from sources you can cite, within the Wikipedia article! This article doesn't yet, but we're working on it! ... From Wikipedia, the free encyclopedia The myoclonic triangle (also known by its ...
★リンクテーブル★
[★]
- 英
- Guillain-Mollaret triangle
- 同
- ミオクローヌス三角 myoclonic triangle
[★]
[★]
- 関
- deltoid、triangular