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Teaching Video NeuroImage: Isolated Undulating Tongue Hyperkinesia Following a Basilar Stroke.
Neurology
February 2024
From the Neuroscience Center (D.A.S., F.O.C., H.N.D., H.C.-L.), Bahiana School of Medicine and Public Health, Salvador; Departments of Neurology (D.A.S., F.O.C.) and Radiology (J.A.F.), Suburban Hospital, Salvador, Bahia, Brazil.
An 82-year-old man with a history of hypertension and coronary revascularization presented with sudden-onset right hemiparesis and disorientation lasting 5 hours. On admission, he was intubated because of gasping and a Glasgow Coma Scale of 3. Hemorrhagic stroke was suspected, but ruled out by the initial head CT, which revealed old cerebellar lacunae.
View Article and Find Full Text PDFNeurilemmoma of Tongue in A Young Female: A Case Report.
Cureus
October 2023
Department of Oral and Maxillofacial Surgery, Sharad Pawar Dental College, Datta Meghe Institute of Higher Education and Research (DMIHER), Wardha, IND.
Neurilemmomas are benign, slowly growing tumors originating from Schwann cells in peripheral nerves. The precise cause is unclear. They commonly occur in the head and neck region (25-48% of cases) and rarely in the oral cavity (1%).
View Article and Find Full Text PDFNeuromuscular Ultrasound Findings of Myokymia in a Young Woman With Generalized Anti-LGI-1 and Anti-Caspr2 Antibodies Negative Isaac Syndrome.
J Clin Neuromuscul Dis
December 2023
Department of Internal Medicine, Medical Center Manila, Philippines.
Isaac syndrome is one of the rare peripheral nerve hyperexcitability (PNH) syndromes, which manifests with gross fasciculations, muscle undulation, twitching, and cramps, with or without autonomic and sensory symptoms. The diagnosis relies on characteristic electromyogram findings and the presence of anti-leucine-rich glial inactivated 1 and anti-contactin-associated protein 2 antibodies in the serum. Here, we report the case of a 21-year-old woman, who presented with extremities and tongue myokymia whose electromyogram findings were compatible with PNH, albeit seronegative for antibodies.
View Article and Find Full Text PDFA Case Series of Patients With MYBPC1 Gene Variants Featuring Undulating Tongue Movements as Myogenic Tremor.
Pediatr Neurol
September 2023
Department of Pediatrics, Tohoku University School of Medicine, Sendai, Japan.
Myosin-binding protein C1 (MYBPC1) encodes myosin-binding protein C, slow type (sMyBP-C), an accessory protein that regulates actomyosin cross-linking, stabilizes thick filaments, and modulates contractility in muscle sarcomeres and has recently been linked to myopathy with tremor. The clinical features of MYBPC1 mutations manifesting in early childhood bear some similarities to those of spinal muscular atrophy (SMA), such as hypotonia, involuntary movement of the tongue and limbs, and delayed motor development. The development of novel therapies for SMA has necessitated the importance of differentiating SMA from other diseases in the early infancy period.
View Article and Find Full Text PDFAntipredator behavior of newts (Cynops pyrrhogaster) against snakes.
PLoS One
December 2021
Department of Zoology, Graduate School of Science, Kyoto University, Kyoto, Japan.
Newts and salamanders show remarkable diversity in antipredator behavior, developed to enhance their chemical defenses and/or aposematism. The present study reports on the antipredator behavior of newts (Cynops pyrrhogaster) in response to snakes. Newts displayed a significant amount of tail-wagging and tail-undulation in response to a contact stimulus from the snake's tongue, which is a snake-specific predator stimulus, as compared to a control stimulus (behavioral scores: tongue, 1.
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