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Hiroshi Kanno,Tetsuya Yoshizumi,Naomi Nakazato,Masamichi Shinonaga 대한신경과학회 2020 Journal of Clinical Neurology Vol.16 No.1
Background and Purpose An epidural blood patch (EBP) is a highly effective therapy for spinal cerebrospinal fluid (CSF) leakage. However, the factors predicting the response to an EBP have not been fully elucidated. The aim of this study was to elucidate factors predicting the response to an EBP. Methods We retrospectively examined the relationship between the response to an EBP and clinical variables of 118 patients with spinal CSF leakage, such as patient age, sex, etiology, interval from the onset to EBP application, CSF opening pressure (OP), radioisotope (RI) cisternography findings, rate of RI remaining in the CSF space, computed tomography (CT) myelography findings, magnetic resonance imaging (MRI) findings, and subjective symptoms (headache, vertigo/dizziness, visual disturbance, nausea, numbness, nuchal pain, back pain/lumbago, fatigability, photophobia, and memory disturbance). The correlations between these variables and the responses to EBPs were analyzed statistically. Results A positive response to an EBP was significantly (p<0.05) correlated with the following variables: <1.5 years from the onset to EBP application, age <40 years, CSF OP <7 cm H2O, epidural CSF leakage in RI cisternography, epidural CSF collection in MRI, <20% RI remaining after 24 hours, orthostatic headache, nausea, nuchal pain, and photophobia. The other variables did not show significant correlations with the responses to EBPs. Conclusions It might be prudent to take the following variables into account when applying an EBP to treat spinal CSF leakage: the interval from the onset to EBP application, age, CSF OP, epidural CSF leakage in RI, epidural CSF collection in MRI, rate of remaining RI, orthostatic headache, nuchal pain, photophobia, and nausea.
Sang Jun Yoon,Jae Goo Lee,Hideo Tajima,Akihiro Yamasaki,Tetsuya Nakazato,Hiroaki Tao,Fumio Kiyono 한국공업화학회 2010 Journal of Industrial and Engineering Chemistry Vol.16 No.3
Extractions of five kinds of lanthanide metal ions by bis(2-ethylhexyl)phosphoric acid (DEHPA) with [1-Cn-3-methylimidazolium][PF6](Cn = C2, C4) or [1-butyl-4-methylpyridinium][PF6] were carried out under various DEHPA and HNO3 concentrations from 0 to 1 M and under different temperature conditions from 298 to 333 K. These results were compared with those using the conventional organic solvent, hexane, in terms of their distribution coefficient values. Under all of the conditions in this study,the ionic liquid system shows more than three times greater extractability for lanthanide compared to when hexane was used. The distribution coefficient of lanthanide ions decreased as the length of the alkyl chain increased from the ethyl to the butyl. In addition, the imidazolium cation generally shows a higher distribution coefficient compared to the pyridinium cation in an ionic liquid. The concentration ratio of lanthanides and DEHPA resulted in an extraction affinity transition for lanthanides. Also evaluated in this study were issues related to the selectivity associated with the lanthanide mixture and the dependency of the ionic radius during lanthanide extraction. 2010 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
Gene Expression Profiling for Toxicological Assessment of Manufactured Nanoparticles in Rat Lung
Katsuhide Fujita,Yasuo Morimoto,Akira Ogami,Toshihiko Myojyo,Isamu Tanaka,Manabu Shimada,Wei-Ning Wang,Shigehisa Endoh,Kunio Uchida,Hiroaki Tao,Masaharu Inada,Tetsuya Nakazato,Moritaka Tamura,Kazuhiro 환경독성보건학회 2008 한국독성학회 심포지움 및 학술발표회 Vol.- No.-