Publications by authors named "Yun-Chung Chen"

Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is the most prevalent monogenic cerebral small vessel diseases caused by a mutation in the NOTCH3 gene. The clinical manifestations of CADASIL range from single or multiple lacunar infarcts, transient ischemic attacks, dementia, migraine with aura to psychiatric disorders. The features of brain MRI of CADASIL include multiple lacunar infarcts and diffuse leukoencephalopathy, which frequently involves external capsules and anterior temporal regions.

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2-(Acylmethylene)pyrrolidine derivatives were synthesized via intermolecular decarbonylative Mannich reaction from various methyl ketones and 1-alkyl-1-pyrroliniums, generated in situ from 1-alkylprolines. This approach mimics the biosynthetic pathway and provides a direct access to a series of 2-(acylmethylene)pyrrolidine alkaloids, including hygrine, N-methylruspolinone, dehydrodarlinine, and ruspolinone.

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Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is an adult-onset, dominantly inherited small-vessel disease of the brain caused by NOTCH3 mutations and characterized by recurrent subcortical infarctions, dementia, migraine with aura, and mood disturbance. We report a patient with unusual presentation of CADASIL with acute simultaneous multiple subcortical lacunar infarcts as the first manifestation. A 69-year-old man developed confusion, drowsiness, right hemiparesis, and slurred speech following orthopedic surgeries.

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Mutations in the 5' non-coding region of GJB1 are rarely reported in patients with Charcot-Marie-Tooth disease (CMT). We therefore aimed to assess the frequency and identities of the GJB1 5' non-coding region mutations in a cohort of CMT. We analyzed the 5' non-coding region of GJB1 (including the promoter P2 and exon 1b) in 91 unrelated CMT patients without an identified genetic cause.

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