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Mechanism of Tolerance to Intranuclear Autoantigens
Kimito, Kawahata,Yoshikata, Misaki,Kazuhiko, Yamamoto 가톨릭 의과학연구원 2001 가톨릭 의과학연구원 국제학술대회 Vol.5 No.-
Immune response to systemic nuclear autoantigens is a distinctive feature of system lupus erythe matosus. Healthy individuals usually keep immunological toerance to nuclear antigens. Even though central tolerance or thymic deletion is importnat, this is usually not perfect. In some experiments, T cells specific for a nuclear autoantigen could be detectde even in peripheral blood of healthy individuals.
Edge Density Profile Measurement by Using Ultrashort Pulsed Radar Reflectometer on LHD
tokihiko Tokuzawa,K. Kawahata,K. Tanaka 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.III
We have installed a ten-channel Ka-band ultrashort pulsed radar reflectometer system which uses an ultrashort sub-cycle pulse and performed an edge electron density profile measurement in the Large Helical Device. The delay time of the reflected pulses from each cut-off layer in the plasma is measured by a time-of-flight measurement technique in order to avoid a mixture of the radiation effect and spurious reflection. The electron density profile is obtained by reconstruction by using an Abel inversion method from the profile of the delay time as a function of the probing frequency. In the density modulation experiment, the time evolution of the reconstructed density profile is used for the particle transport study.I
Masaki Kuwatani,Yoshimasa Kubota,Shuhei Kawahata,Kimitoshi Kubo,Kazumichi Kawakubo,Hiroshi Kawakami,Naoya Sakamoto 소화기인터벤션의학회 2018 International journal of gastrointestinal interven Vol.7 No.1
A 69-year-old woman with jaundice was referred to our hospital. After a final diagnosis of pancreatic cancer with liver metastasis, we performed transpapillary biliary drainage with a covered self-expandable metal stent (SEMS). Three months later, we also placed an uncovered duodenal stent for duodenal stricture in a side-to-end fashion. Another month later, for biliary SEMS obstruction, we attempted a transpapillary approach. A duodenoscope was advanced and a guidewire was passed through the mesh of the duodenal stent into the bile duct with a flexible tip catheter, but the catheter was not. Thus, we exchanged the duodenoscope for a forward-viewing two-channel endoscope and used the left working channel with a flexible tip catheter. By adjusting the axis, we finally succeeded biliary cannulation and accomplished balloon cleaning for recanalization of the SEMS. This is the first case with successful biliary cannulation by combined use of a two-channel endoscope and a flexible tip catheter.
Masaki Kuwatani,Yoshimasa Kubota,Shuhei Kawahata,Kimitoshi Kubo,Kazumichi Kawakubo,Hiroshi Kawakami,Naoya Sakamoto 소화기인터벤션의학회 2018 Gastrointestinal Intervention Vol.7 No.1
A 69-year-old woman with jaundice was referred to our hospital. After a final diagnosis of pancreatic cancer with liver metastasis, we performed transpapillary biliary drainage with a covered self-expandable metal stent (SEMS). Three months later, we also placed an uncovered duodenal stent for duodenal stricture in a side-to-end fashion. Another month later, for biliary SEMS obstruction, we attempted a transpapillary approach. A duodenoscope was advanced and a guidewire was passed through the mesh of the duodenal stent into the bile duct with a flexible tip catheter, but the catheter was not. Thus, we exchanged the duodenoscope for a forward-viewing two-channel endoscope and used the left working channel with a flexible tip catheter. By adjusting the axis, we finally succeeded biliary cannulation and accomplished balloon cleaning for recanalization of the SEMS. This is the first case with successful biliary cannulation by combined use of a two-channel endoscope and a flexible tip catheter.