Toyotaka Iguchi

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Bisphosphonates have been used for the treatment of hypercalcemia associated with malignancies and osteoporosis. It was previously reported that the mevalonate pathway is involved in nitrogen-containing bisphosphonate-induced apoptosis in osteoclasts and myeloma cells. The aim of this study was to determine the effects of two bisphosphonates, incadronate,(More)
A 59-year-old man was referred to our hospital for the evaluation of pain on exertion of the right arm. X-ray examination showed a humeral tumor, and a tumorectomy was subsequently performed. The histological analysis showed necrotic tissue with no malignant cells. Serum protein electrophoresis yielded a small amount of M proteins without monoclonality of(More)
Osteosarcoma is one of the most common primary malignant tumors of the bone in children and adolescents. Some patients continue to have a poor prognosis, as they have metastatic disease and frequent occurrence of drug resistance. Zoledronate is a nitrogen-containing bisphosphonate that has been used for the treatment of hypercalcemia and bone metastasis,(More)
To ascertain the exact anti-myeloma mechanism of thalidomide in vivo, we performed structural development studies of thalidomide, and obtained various analogues with specific molecular properties. Among these derivatives, we found that a new thalidomide analogue, 2-(2,6-diisopropylphenyl)-5-hydroxy-1H-isoindole-1,3-dione (5HPP-33) had the most potent(More)
A 66-year-old man was referred to our hospital for the treatment of refractory multiple myeloma with thalidomide. He had a history of an interstitial pneumonia of unknown etiology two months before admission. Eight days after starting 200 mg/ day of thalidomide, he developed dyspnea and fever, followed by a macropapular rash in the trunk. The dyspnea got(More)
2-(2,6-Diisopropylphenyl)-5-hydroxy-1H-isoindole-1,3-dione (5HPP-33), which was obtained during our previous structural development studies on thalidomide, was revealed to possess potent tubulin-polymerization-inhibiting activity, comparable to that of the known tubulin-polymerization inhibitors, rhizoxin and colchicine. A major metabolite of thalidomide,(More)
A 20-year-old man was referred to our hospital because of leukocytosis and was diagnosed as having chronic myelogenous leukemia in lymphoblastic crisis. His left leg began to swell soon after the beginning of induction chemotherapy and deep vein thrombosis (DVT) was confirmed by doppler echography, which progressed to compartment syndrome next day. After(More)
A 58-year-old man had a relapsed follicular lymphoma (Grade 2) and was treated with mitoxantrone, fludarabine and dexamethasone followed by rituximab, and achieved partial remission. The patient then underwent high-dose chemotherapy followed by autologous peripheral blood stem cell transplantation (auto-PBSCT). Three days after starting high-dose therapy,(More)
A 44-year-old man with relapsed acute promyelocytic leukemia (APL), refractory to all-trans-retinoic acid (ATRA), daunorubicin, and cytosine arabinoside, was treated with arsenic trioxide (ATO). ATO was given intravenously at a dose of 0.15 mg/kg/day for 20 days, and the patient achieved complete remission. No serious adverse events related to ATO infusion(More)