Publications by authors named "Shinichi Maruyama"

Maintaining good medication adherence is important for providing desirable outcomes from medication therapy. We showed that therapeutic drug monitoring (TDM) contributed to the identification of low medication adherence to cabozantinib in a patient with cancer. We present an educational case to assist with understanding TDM in a patient with cancer.

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Article Synopsis
  • Cabozantinib is effective for advanced renal cell carcinoma (RCC), but 60% of patients experience severe side effects requiring dose reductions; this study examines its impact in Japanese patients.
  • Researchers measured cabozantinib trough concentrations in 10 Japanese RCC patients, finding higher concentrations correlated with better cancer control and increased adverse events.
  • Results suggest monitoring cabozantinib levels could enhance treatment effectiveness and reduce serious side effects in Japanese patients with RCC.
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Pazopanib is a multi-kinase inhibitor used to treat advanced/metastatic renal cell carcinoma and advanced soft tissue tumors; however, side effects such as diarrhea and hypertension have been reported, and dosage adjustment based on drug concentration in the blood is necessary. However, measuring pazopanib concentrations in blood using the existing methods is time-consuming; and current dosage adjustments are made using the results of blood samples taken at the patient's previous hospital visit (approximately a month prior). If the concentration of pazopanib could be measured during the waiting period for a doctor's examination at the hospital (in approximately 30 min), the dosage could be adjusted according to the patient's condition on that day.

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We previously established the selection-marker-free rice-based oral cholera vaccine (MucoRice-CTB) line 51A for human use by -mediated co-transformation and conducted a double-blind, randomized, placebo-controlled phase I trial in Japan and the United States. Although MucoRice-CTB 51A was acceptably safe and well tolerated by healthy Japanese and U.S.

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Cabozantinib is an oral small-molecule tyrosine kinase inhibitor that has become a standard of care for advanced renal cell carcinoma (RCC). However, cabozantinib is associated with a high rate of adverse events. Therefore, individualised cabozantinib administration and monitoring could help maximise its therapeutic efficacy and avoid serious adverse events.

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MucoRice-CTB is a promising cold-chain-free oral cholera vaccine candidate. Here, we report a double-blind, randomized, placebo-controlled, phase I study conducted in the USA in which vaccination with the 6-g dose of MucoRice-CTB induced cross-reactive antigen-specific antibodies against the B subunit of cholera toxin (CTB) and enterotoxigenic Escherichia coli heat-labile enterotoxin without inducing serious adverse events. This dosage was acceptably safe and tolerable in healthy men and women.

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Article Synopsis
  • Researchers developed a rice-based oral vaccine, MucoRice-CTB, which includes cholera toxin B subunits and has a lower allergen protein expression compared to regular rice.
  • The team confirmed that the transgene sequences and their positions on rice chromosomes were consistent across seed banks, indicating stability over generations.
  • Analyses showed no significant genetic or protein differences between the new seed bank (NSB) and the original master seed bank (MSB), suggesting NSB can replace MSB for future uses.
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