2000
DOI: 10.1002/(sici)1096-8628(20000501)92:1<1::aid-ajmg1>3.0.co;2-h
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Asymptomatic maternal myasthenia as a cause of the Pena-Shokeir phenotype

Abstract: We report six sibs with arthrogryposis multiplex congenita and a Pena-Shokeir phenotype, born to a healthy woman who was discovered to have asymptomatic myasthenia gravis (MG). This is the first report of anti-acetylcholine receptor (AChR) antibodies causing fetal akinesia/hypokinesia sequence in the offspring of an asymptomatic mother.

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Cited by 66 publications
(38 citation statements)
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“…The embryonic AChR (a2,b,g,d) is replaced by the adult isoform (a2,b,e,d) by 33 weeks of gestation [41]. The presence in the mother of high-titer antibodies which disrupt the function of the fetal-type AChR can be responsible for arthrogryposis multiplex congenita (AMC), due to severe fetal akinesia during early muscle development and characterized by joint contractures with multiple deformities and increased intrauterine death [42]. A new disease, termed 'fetal acetylcholine receptor inactivation syndrome', has recently been reported in children with persistent focal weakness following NMG [43 ].…”
Section: Neonatal Myasthenia Gravis and Related Diseasesmentioning
confidence: 99%
“…The embryonic AChR (a2,b,g,d) is replaced by the adult isoform (a2,b,e,d) by 33 weeks of gestation [41]. The presence in the mother of high-titer antibodies which disrupt the function of the fetal-type AChR can be responsible for arthrogryposis multiplex congenita (AMC), due to severe fetal akinesia during early muscle development and characterized by joint contractures with multiple deformities and increased intrauterine death [42]. A new disease, termed 'fetal acetylcholine receptor inactivation syndrome', has recently been reported in children with persistent focal weakness following NMG [43 ].…”
Section: Neonatal Myasthenia Gravis and Related Diseasesmentioning
confidence: 99%
“…Hastalarımızda annede MG olmaması ve belirtilerin 1 yaş sonrası başlaması nedeniyle neonatal MG düşünülmedi. Ancak neonatal MG her zaman tipik bir seyir göstermeyebilir ve bulgular beklenenden uzun süre devam edebilir [13,14]. Çoğunlukla selim bir seyir gösterme-sine karşın, fetusun maternal AchR antikorları nedeniyle hareket azlığına bağlı artrogripozis multipleks konjenita gelişebilir [13].…”
Section: Klinikunclassified
“…Ancak neonatal MG her zaman tipik bir seyir göstermeyebilir ve bulgular beklenenden uzun süre devam edebilir [13,14]. Çoğunlukla selim bir seyir gösterme-sine karşın, fetusun maternal AchR antikorları nedeniyle hareket azlığına bağlı artrogripozis multipleks konjenita gelişebilir [13]. Üç kardeşte, neonatal MG sonrası fokal güçsüzlüğün devam etmesi ile karakterize, "fetal asetilkolin reseptör inaktivasyon sendromu" olarak adlandırılan yeni bir klinik tablo tanımlan-mıştır [14].…”
Section: Klinikunclassified
See 1 more Smart Citation
“…Pena-Shokeir syndrome may result from truncating mutations in RAPSN or DOK7. Prenatal exposure to circulating maternal neurogenic antibodies to the acetylcholine receptor is another cause of the syndrome [2]. The protein encoded by DOK7 induces autophosphorylation of the skeletal muscle receptor-like tyrosine kinase, a key protein involved in postsynaptic differentiation.…”
Section: Introductionmentioning
confidence: 99%