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Articles by H Shima
Total Records ( 2 ) for H Shima
  H Shima , H Takatsu , S Fukuda , M Ohmae , K Hase , H Kubagawa , J. Y Wang and H. Ohno
 

Fc receptors specifically bind to the Fc region of Igs to mediate the unique functions to each class of Igs. To identify a novel Fc receptor for IgM, we searched expressed sequence tag database for molecules containing Ig domains with homology to those of known Fc receptors for IgM, Fc/µR and polymeric Ig receptor. As a result, we identified TOSO/Fas apoptotic inhibitory molecule 3 (FAIM3) as a possible Fc receptor for IgM. HeLa cells transfected with a TOSO/FAIM3-expression vector bound to IgM but not IgG and were able to internalize IgM-conjugated beads but not IgG-conjugated beads, suggesting that TOSO/FAIM3 is indeed a receptor for IgM (FcµR). FcµR protein was expressed predominantly on B-lineage cells; expression of the Fcmr transcripts was observed from the pre-B-cell stage and maintained thereafter during B-cell development. These results identify TOSO/FAIM3 as a receptor for IgM and suggest that FcµR may serve as an uptake receptor for IgM-opsonized antigens by B cells.

  I Kobayashi , E Ishimura , K Hirowatari , T Tsuchida , A Nishihira , H Shima , K Shidara , K Mori , M Inaba , K. i Wakasa and Y. Nishizawa
 

A renal biopsy was performed in a 47-year-old man with haemophilia A. Thirty minutes after administration of an intravenous bolus of 4000 units of recombinant factor VIII, which increased the activity to 74–91%, a needle renal biopsy was successfully performed, followed by administration of 3000 units of factor VIII in the evening, and then the subsequent morning and evening. The patient was diagnosed with hepatitis C virus-associated membranoproliferative glomerulonephritis. Treatment with interferon, ribavirin, prednisolone and cyclosporine A improved the nephrotic syndrome. This is the first report of a successful renal biopsy in a patient with haemophilia A after factor VIII injection.

 
 
 
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