Publications by authors named "T Toyonaga"

Background/aims: Visualization of palisade vessels (PVs) in Barrett's esophagus is crucial for proper assessment. This study aimed to determine whether red dichromatic imaging (RDI) improves PV visibility compared with white-light imaging (WLI) and narrow-band imaging (NBI).

Methods: Five expert and trainee endoscopists evaluated the PV visibility in Barrett's esophagus using WLI, NBI, and RDI on 66 images from 22 patients.

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A 61-year-old woman who had been taking olmesartan for 7 years complained of epigastric pain, diarrhea, loss of appetite, and weight loss. Esophagogastroduodenoscopy revealed roughened mucosa and erosions in the stomach and duodenum. An endoscopic biopsy failed to identify the cause of the mucosal disorder.

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A 64-year-old man was admitted for hematemesis. Esophagogastroduodenoscopy revealed a gastric ulcer with a visible vessel on the posterior wall of the gastric body. After admission, the patient developed multiple episodes of massive hematemesis.

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Article Synopsis
  • The study investigates synaptic density in autistic adults using positron emission tomography (PET) and synaptic vesicle glycoprotein 2A (SV2A) as a marker.
  • Results show that autistic individuals exhibit a 17% lower synaptic density across the whole cortex compared to non-autistic peers, with significant deficits in various brain regions, especially the prefrontal cortex.
  • The findings suggest that lower synaptic density is associated with increased autistic features, pointing to a potential molecular basis for autism that requires further exploration.
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