Neonatal-onset brainstem reticular reflex myoclonus following a prenatal brain insult: Generalized myoclonic jerk and a brainstem lesion

Yosuke Kakisaka, Kazuhiro Haginoya, Noriko Togashi, Taro Kitamiura, Mitsugu Uematsu, Naomi Hino-Fukuyo, Shigeo Kure, Junko Saito, Setsuko Kitaoka, Shuei Watanabe, Hideto Yoshikawa, Takahiro Nara, Yoichi Suzuki, Shigeru Tsuchiya

研究成果: Article査読

5 被引用数 (Scopus)

抄録

Brainstem reticular reflex myoclonus (BRRM) is characterized by sudden, generalized, shock-like movements that can be elicited by sensory stimulation. We present a boy, born after 35 weeks gestation, who was diagnosed with neonatal-onset BRRM. Within 1 hr of birth, the patient showed spasticity and generalized clonic movements of all limbs elicited with tactile stimulation anywhere on the body. Surface electromyography showed co-contraction of agonistic and antagonistic muscles, revealing that his generalized clonic movements were tremulous myoclonus in nature. Brain magnetic resonance imaging (MRI) at 21 hrs after birth disclosed high-intensity lesions in the Rolandic area, thalamus, basal ganglia, and brainstem, including the dorsal pons and medulla, the center of BRRM, in T1-weighted images. Follow-up MRI at 1 month revealed dramatic improvement in the pontine lesion. The patient showed gradual remission of the characteristic movements, which disappeared at 1 year of age, but the patient died unexpectedly at 1 year and 3 months. In conclusion, neonatal BRRM arises as a result of severe brainstem injury, and the associated lesions may only be seen temporarily on MRI taken soon after birth.

本文言語English
ページ(範囲)303-308
ページ数6
ジャーナルTohoku Journal of Experimental Medicine
211
3
DOI
出版ステータスPublished - 2007 3 9

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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