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I.はじめに
細菌に対する抗生物質の発達に比較して,制癌剤は,正常細胞には障害を与えず,癌細胞のみを選択的に破壊するという意味での選択的毒性は低く,その副作用のために癌の化学療法はまだ満足できる状態には至っていない.
これらの解決方法の1つとして,単一薬剤の分割投与方法,投与量の工夫や,併用療法などが工夫されてきたが,いずれもまだ不十分である.
During a 6.5-year period from March 1978, 136 patients with brain tumors, which were diagnosed as gliomas or metastatic brain tumors during surgical ope-ration, were treated by the application of sustained release anticancer pellets in seven institutes.
Histological diagnosis disclosed that the majority of the tumors were malignant gliomas (61 cases), meta-static brain tumors (35 cases), and benign astrocytoma (17 cases).
The anticancer agents (250 mg of 5FU, 1.5 mg of MMC, 250 mg of BUdR and 6,000 iu of urokinase) were sealed in a Silastic silicone tube of 6 mm in diameter, 0.25 mm in wall thickness, and 12 mm in length.
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