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Ippei Takeuchi,Tatsuyo Suzuki,Taro Kishi,Daisuke Kanamori,Manako Hanya,Junji Uno,Kiyoshi Fujita,Hiroyuki Kamei 대한정신약물학회 2015 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.13 No.1
Clozapine has been demonstrated to be useful for treating refractory schizophrenia. However, hypersalivation occurs in 31.0- 97.4% of the patients treated with clozapine. Accordingly, some patients who are disturbed by their hypersalivation refuse to continue with clozapine treatment. This study investigated the efficacy of the anticholinergic agent scopolamine butylbromide against clozapine-induced hypersalivation. Five schizophrenia patients were coadministered scopolamine butylbromide (30-60 mg/ day) for 4 weeks. At the baseline and after 4 weeks’ treatment, we subjectively evaluated hypersalivation using a visual analog scale and objectively assessed it using the Drooling Severity Scale and Drooling Frequency Scale. As a result, improvements in the patients’ Drooling Severity Scale and Drooling Frequency Scale scores, but no improvements in their visual analog scale scores, were observed after scopolamine butylbromide treatment. These results indicate that at least some schizophrenic patients with clozapine-induced hypersalivation would benefit from scopolamine butylbromide treatment. We conclude that clozapine-induced hypersalivation is one factor of stress to patients. Subjective hypersalivation was not improved, but objective hypersalivation was, by scopolamine butylbromide treatment. However, scopolamine butylbromide and clozapine possess anticholinergic effects so clinicians should closely monitor patients who take scopolamine butylbromide.
Donghyeon Lee,Donghyeon Han,Seyeop Jung,Nyunjong Lee,Suzuki Ippei,Takahashi Yukiko,Sanghoon Kim 한국자기학회 2021 한국자기학회 학술연구발표회 논문개요집 Vol.31 No.1
A granular magnetic thin film is a well-known material system for achieving an ultra-high density recording media. Such nano-scale segregation of magnetic elements with excellent thermal stability can be made in the thin film. This material system typically consists of small grains in a few nanometers scale which is isolated by few nanometer-thick boundary. FePt-C is the most popular material for the hard disk drive industry. In general, L1<sub>0</sub>-structured FePt grains surrounded by C are placed on an MgO layer. Grain size in the film varies in a range between 7 nm~20 nm. Magnetic easy axis of each grain is also deviated from the vertical direction to the plane. In this presentation, we suggest the Stoner-Wohlfarth model with the standard deviation of the magnetic easy axis to understand the magnetization switching behavior of the FePt-C thin film. From our model, we can quantify a degree of deviation of the magnetic easy axis in the FePt-C granular film.