Publications by authors named "M Tomomatsu"

Recent studies have highlighted the indispensable role of oxidized lipids in inflammatory responses, cell death, and disease pathogenesis. Consequently, inhibitors targeting oxidized lipids, particularly lipid-derived radicals critical in lipid peroxidation, which are known as radical-trapping antioxidants (RTAs), have been actively pursued. We focused our investigation on nitroxide compounds that have rapid second-order reaction rate constants for reaction with lipid-derived radicals.

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Article Synopsis
  • - Recent research highlights mitochondrial dysfunction as a key factor in the development and progression of age-related macular degeneration (AMD), affecting crucial metabolic processes like oxidative phosphorylation and glycolysis.
  • - The study investigates oxidized low-density lipoprotein (ox-LDL), found in drusen, and its impact on metabolic changes in retinal pigment epithelial (RPE) cells, revealing that prolonged exposure leads to altered fatty acid β-oxidation, OXPHOS, and increased reactive oxygen species production.
  • - The research also critiques conventional ARPE-19 cell lines used in AMD studies, noting their limitations compared to stem cell-derived RPE cells, which could provide better insights into the disease mechanisms.
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The patient was a 69-year-old man. He visited our hospital with a complaint of right back pain. An abdominal CT scan confirmed a hypovascular mass 35 mm in diameter in the pancreatic head.

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A 53-year-old woman was referred to our hospital because of upper abdominal pain and expansion of the pancreatic main duct. Enhanced computed tomography revealed expansion of the main pancreatic duct from the head to the tail; in addition, a 30 mm cystic tumor was observed in the pancreatic head and a 56 mm tumor was observed in the ventral side of the pancreatic body. Endoscopy revealed fistula formation in the duodenum of the Vater papilla on the oral side.

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Angiotensin III has been reported to exist in various animals and tissues. The physiological role, however, is still unclear except that brain angiotensin III is a central regulator of vasopressin release. In this study, angiotensin III as well as angiotensin II enhanced an increase in body weight of clam worms of Perinereis sp.

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