Publications by authors named "H Takaya"
Iron oxide nanoparticles (NPs) are nontoxic and abundant materials which have long been investigated as reusable catalysts in oxidation reactions, but their use so far has been hampered by a low selectivity. Here, unsupported iron oxide NPs have been found to successfully catalyze the microwave-assisted oxidation of primary and secondary alcohols to their respective aldehydes and ketones with a high selectivity when -methylmorpholine -oxide was used as the terminal oxidant. The crystalline phase and size of the iron-based catalyst have a drastic effect on its activity, with small magnetite (FeO) NPs being the optimal catalyst for this reaction.
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- The study aimed to determine if the levels of von Willebrand factor (VWF) and a protein called ADAMTS13 can predict the progression of esophagogastric varices (EGV) in patients with liver cirrhosis caused by hepatitis C after successful antiviral treatment.
- Researchers analyzed 47 patients who achieved a sustained virologic response (SVR) after direct-acting antiviral (DAA) therapy; 18 of these patients showed signs of EGV progression post-treatment.
- Results indicated that a higher VWF-to-ADAMTS13 ratio (greater than 2.3) was a significant risk factor for EGV progression, suggesting that this ratio can help identify patients at risk for complications
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- Despite negative cultures, his condition improved, and he was discharged 20 days later without peritonitis symptoms.
- After a 40-day follow-up culture revealed Mycobacterium tuberculosis and the recurrence of peritonitis, a positive T-SPOT test led to successful anti-tuberculosis treatment, highlighting its potential for early diagnosis.
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- The study aimed to examine the von Willebrand factor to ADAMTS13 ratio (VWF:Ag/ADAMTS13:AC) as a biomarker for predicting outcomes in patients with acute kidney injury (AKI) related to liver cirrhosis (LC).
- Researchers compared 91 patients with AKI against 91 control patients without AKI, measuring plasma levels of VWF and ADAMTS13 to identify risk factors.
- Results showed that higher VWF:Ag/ADAMTS13:AC ratios were linked to increased risk of AKI onset, higher 90-day mortality rates, and poorer treatment responses, suggesting this ratio could be a significant predictor for patients with LC.
In this study, we synthesized two cryptands featuring entangled tri- and tetra(ethylene glycol) linkers. The cryptand bearing short linkers was chiral without any asymmetric carbon atoms. After chiral high-performance liquid chromatography was used to separate the enantiomers, the absolute configuration of each cryptand was determined through single-crystal X-ray and circular dichroism analyses.
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