Publications by authors named "Kei-Ichi Yamamoto"

A Gram-stain-negative, spiral bacterium (PAGU 1991) was isolated from the blood of a patient with diffuse large B-cell lymphoma. Phylogenetic analysis based on 16S rRNA gene sequences showed that the isolate was very closely related to LMG 23362 (99.1 % similarity), originally isolated from a faecal sample from a healthy horse.

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Article Synopsis
  • The case report discusses a 35-year-old male with anti-NMDAR encephalitis who experienced atypical relapses characterized by multiple white matter lesions and psychiatric symptoms.
  • A brain biopsy revealed demyelinated lesions resembling those seen in multiple sclerosis, and treatment with methylprednisolone improved his condition.
  • The study suggests that changes in the patient's symptoms correlated with fluctuations in the cerebrospinal fluid NMDAR antibody levels, indicating that the lesions may be a result of the encephalitis.
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Oligomer Abeta is the term utilized for multimeric but non-fibrillar forms of amyloid beta-protein (Abeta). The most prominent property of oligomer Abeta is considered to be its solubility and structure. Here, we examined the histochemical localization of oligomer Abeta in AD brains.

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Natural products have been used for healthcare and pharmacotherapy. Because difficulties in quality control affect their production, processing, and marketing, it is necessary to establish adequate marker compounds for their effective application. Ergosta-4,6,8(14),22-tetraen-3-one(I) was studied in the screening of the marker compounds for the standardization of Polyporus Sclerotium ([symbol: see text]), which has the advantage of easy qualitative and quantitative analysis because of its fluorescence.

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