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Biomedical subjects

K Yukawa

Publications and source records attributed to K Yukawa.

At least 55 records · Page 3Linked to original sources
PubMed1987

A B cell-specific differentiation antigen, CD23, is a receptor for IgE (Fc epsilon R) on lymphocytes.

Two independent L cell transformants expressing human lymphocyte Fc epsilon R were established by using cellular DNA from RPMI 8866 cells. The surface expression of the receptor was confirmed on the basis of the binding of a panel of anti-Fc epsilon R antibodies and its ability to bind IgE. Anti-CD23 antibodies strongly stained the transformants, indicating possible identity or antigenic relationship between Fc epsilon R and CD23. This interesting observation warrants additional clarification as to the role of CD23 and Fc epsilon R in B cell differentiation.

Animals↗
PubMed1987

Speech perception with multi-channel cochlear implant of short duration pulse strategy.

A multi-channel cochlear implant (Nucleus type) was implanted in a 40-year-old female Japanese patient who became totally deaf after meningitis. The formant-based speech processing strategy was used, but a narrow pulse width of 22-42 microseconds was required because of intermittent difficulty in controlling the pulse amplitude. The patient was tested with a speech tracking test and could recognize 24 bunsetsues (the minimum meaningful unit of the Japanese sentence) per minute using the cochlear implant plus lipreading and 14.3 bunsetsues for the lipreading alone after 3.5 months' training. The patient was also able to understand usual conversational sentences spoken a little slowly. Scores of vowel and consonant tests reached 70% and 54% respectively for the cochlear implant alone, and 100% and 73% for the cochlear implant plus lipreading. This study has also shown that cochlear stimulation with very narrow pulse widths can be used, and restore speech comprehension ability for the Japanese.

Acoustic Stimulation↗
PubMed1977

Treatment of the intestinal tuberculosis.

Twenty-seven cases of patients with intestinal tuberculosis were reported. Seventeen cases showed good response to antituberculosis chemotherapy. The numbers and size of ulceration, pseudopolyp and deformity of intestinal tract were checked by endoscopic and X-ray studies on comparative evaluation between prechemotherapeutic and postchemotherapeutic stage. In these cases, subjective symptoms were disappeared parallel with the marked improvement on X-ray and endoscopic findings. These data suggest that with current well planned antituberculosis chemotherapy program, tuberculous colitis is controlled fairly while tuberculous enteritis in controlled inadequately. Therefore, surgical procedures are commly indicated to the treatment of tuberculous enteritis.

Adult↗