新入生勧誘イベント

写真あ

上腸間膜動脈限局性の高安動脈炎の一例

腹痛を呈した上腸間膜動脈（superior mesenteric artery: SMA）に限局した高安動脈炎の一例を経験したので，文献的考察を加えて報告する．症例は17歳，男性．心窩部痛・右背部痛を認め，近医を受診し，その際施行した体外式腹部超音波検査（ultrasound: US）でSMA の壁肥厚が疑われ，当院総合診療科を紹介受診した．身体診察では上腹部正中に軽度圧痛を認め，血液生化学検査では血沈（60min）35mm, CRP 3.92mg/dL と軽度上昇を認めた．US では，腹痛を訴える部位に一致してSMA 起始部にびまん性の壁肥厚を認め，血管炎が疑われた．胸部造影・上腹骨盤部単純造影CT 検査（computed tomography: CT）ではSMA 周囲に造影効果を認める軟部影を認め，18F-FDGPET（18F-fluorodeoxyglucose positron emission tomography: PET）/CT 検査ではSMA 起始部付近に腫大と軽度のFDG 集積を認め，動脈炎による集積で矛盾しない所見であった．以上のことから，SMA に限局した高安動脈炎と診断した．ステロイド治療を開始し腹痛は速やかに消褪すると共に，US 所見にも改善がみられた．We report the case of a 17-year-old male who visited a hospital complaining of epigastric and right back pain. Thickening of the wall of the superior mesenteric artery （SMA) was suspected by ultrasound （US), and he was referred to our hospital. Physical examination revealed median upper abdominal tenderness. Laboratory tests showed an erythrocyte sedimentation rate （60 min) of 35 mm and C-reactive protein of 3.92mg/dL. US examination in our hospital showed diffuse wall thickening at the origin of the SMA. Because the location of the pain and the affected area identified by US were the same, we suspected angiitis. An enhanced area around the SMA was revealed by computed tomography. 18F-fluorodeoxyglucose positron emission tomography/computed tomography showed swelling at the origin of the SMA and mild accumulation of fluorodeoxyglucose. He was diagnosed with Takayasu arteritis involving the SMA. Steroid therapy was started, and his abdominal pain and US findings improved

2015年度読書運動プロジェクト活動報告書

活動資料 p.(1)～p.(5)はじめに : 藤本 朝巳 p.1新入生勧誘イベント : 中藤 祥子 p.2読書会 : 匿名、森園 佳子、藏田 香織 p.3-p.5コンテスト・コンクール : 森園 佳子 p.6-p.7展示 : 秋葉 祐子 p.8-p.10コラボランチ : 秋葉 祐子 p.11選書ツアーとPOP講座 : 匿名 p.12文学散歩 : 吉満 みなみ p.13大学祭 : 小根山 桃子、今井 舞菜 p.14-p.16高校訪問 : 森園 佳子 p.17読み聞かせレッスン : 森園 佳子 p.18サマースクールプログラム朗読発表 : 鈴木 珠友 p.19小学校朗読会 : 森園 佳子 p.20朗読会 : 森園 佳子、阿部 果鈴 p.21-p.22朗読チームの活動を振り返って : 高橋 里奈、匿名 p.23-p.24プロフィール p.25-p.31おわりに : 森園 佳子 p.32写真あり表あ

Photoinduced Electron Transfer between Ruthenium-bipyridyl Complex and Methylviologen in Suspensions of Smectite Clays

We examined photoinduced electron transfer (PET) in multicomponent aqueous suspensions composed of tris­(2,2′-bipyridine)­ruthenium­(II) (Ru­(bpy)₃²⁺, photocatalyst), methylviologen (1,1′-dimethyl-4,4′-bipyridinium dication, MV²⁺, electron acceptor), and ethylenediamine tetraacetate (EDTA, sacrificial electron donor) together with particles of smectite-type clays although previous studies indicated inhibition of the electron transfer from Ru­(bpy)₃²⁺ to MV²⁺ in the presence of clay particles. Clays with different lateral particle sizes were compared: hectorite (Hect) and saponite (Sapo) with small particle sizes (∼30 nm) and fluorohectorite (FH) and montmorillonite (Mont) with large particle sizes (>0.1 μm). Clay particles were flocculated and were settled in many cases after the addition of Ru­(bpy)₃²⁺, MV²⁺, and EDTA species, and the Ru­(bpy)₃²⁺ and MV²⁺ cations were almost all adsorbed on the clay particles. When Hect and Sapo were used, reduction of MV²⁺ was observed on the aggregated clay particles upon visible light irradiation indicating the occurrence of PET from Ru­(bpy)₃²⁺ to MV²⁺. However, the reaction was not observed for the samples where the clay particles were not settled. When FH and Mont were used, PET was not observed irrespective of the flocculation of clay particles. These results demonstrated that PET from Ru­(bpy)₃²⁺ to MV²⁺ in the presence of clay particles is possible when the clay particles with small sizes are appropriately aggregated to allow interparticle electron hopping

Two Pathways for Importing GDP-fucose into the Endoplasmic Reticulum Lumen Function Redundantly in the O-Fucosylation of Notch in Drosophila*

Notch is a transmembrane receptor that shares homology with proteins containing epidermal growth factor-like repeats and mediates the cell-cell interactions necessary for many cell fate decisions. In Drosophila, O-fucosyltransferase 1 catalyzes the O-fucosylation of these epidermal growth factor-like repeats. This O-fucose elongates, resulting in an O-linked tetrasaccharide that regulates the signaling activities of Notch. Fucosyltransferases utilize GDP-fucose, which is synthesized in the cytosol, but fucosylation occurs in the lumen of the endoplasmic reticulum (ER) and Golgi. Therefore, GDP-fucose uptake into the ER and Golgi is essential for fucosylation. However, although GDP-fucose biosynthesis is well understood, the mechanisms and intracellular routes of GDP-fucose transportation remain unclear. Our previous study on the Drosophila Golgi GDP-fucose transporter (Gfr), which specifically localizes to the Golgi, suggested that another GDP-fucose transporter(s) exists in Drosophila. Here, we identified Efr (ER GDP-fucose transporter), a GDP-fucose transporter that localizes specifically to the ER. Efr is a multifunctional nucleotide sugar transporter involved in the biosynthesis of heparan sulfate-glycosaminoglycan chains and the O-fucosylation of Notch. Comparison of the fucosylation defects in the N-glycans in Gfr and Efr mutants revealed that Gfr and Efr made distinct contributions to this modification; Gfr but not Efr was crucial for the fucosylation of N-glycans. We also found that Gfr and Efr function redundantly in the O-fucosylation of Notch, although they had different localizations and nucleotide sugar transportation specificities. These results indicate that two pathways for the nucleotide sugar supply, involving two nucleotide sugar transporters with distinct characteristics and distributions, contribute to the O-fucosylation of Notch