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Biomedical subjects

N Miyanaga

Publications and source records attributed to N Miyanaga.

59 records · Page 4Linked to original sources

[The long-term prognosis of intra-arterial chemotherapy in invasive bladder cancer].

During the period from August 1980 to April 1989, preoperative intra-arterial infusion chemotherapy was performed in 22 patients with resectable bladder cancer. An oblique incision approximately 12 cm long was made in the gluteal lesion to expose the inferior gluteal artery, into which a Teflon catheter was inserted and fixed. Via this catheter, a single dose of 10-20 mg CDDP and/or 10 mg ADM was injected 1-2/week. The majority of patients were treated with radiation and/or hyperthermia as a combined therapy. The 5-year survival rates (Kaplan-Meier method) were 81.6% in patients treated with intra-arterial infusion chemotherapy as an adjuvant to total cystectomy, compared with 37.5% in patients treated with total cystectomy only. There was a statistically significant difference between the two groups (p less than 0.01). Therefore, inferior-gluteal-artery infusion chemotherapy is effective as a preoperative adjuvant therapy with no serious side effects.

Aged↗

[Radioactive nuclides in the marine environment--distribution and behaviour of 95Zr, 95Nb originated from fallout].

To investigate behaviour of 95Zr, 95Nb in the marine environment, various samples have been collected and measured by means of Ge(Li) gamma-ray spectrometry and/or radiochemical analysis during a period from 1974 to 1982 at coastal area of Tokai-mura, Ibaraki prefecture. Concentration of the nuclides in seaweeds increased remarkably after atmospheric nuclear detonation by P.R. of China, and the activity ratio between the nuclides changed by time was not fit well by the transient decay equation. Concentration variation in sea water was smaller than that in sea weeds, and the minimum change in sea sediment. Increase of concentration in these environmental samples was observed in chronological order of sea water, sea weeds then sediment after detonations, suggesting that the uptake of the nuclides by these sea weeds from sea water is faster than that via root. Observed concentration factors on the nuclides by sea weeds were calculated from the observed concentrations in sea water and sea weeds. Maximum values on 95Zr and 95Nb were 2110, 2150, respectively for Ecklonia cava and Eisenia bicyclis.

Niobium↗