Biomedical subjects
Publications and source records attributed to Shin-Ichi Kondo.
To explore the anion recognition ability of silanol hydroxy groups, a silanediol-based receptor 1 was prepared. Spectroscopic studies and X-ray crystallography revealed that the receptor exhibits the characteristic recognition of anions via two hydrogen bonds in chloroform.
A 48-year-old male patient with follicular lymphoma, grade II, stage IV, was treated with CHOP, ESHAP and MACOP-B, resulting in partial remission. After 9 months, the disease progressed and several chemotherapy agents, including three courses of rituximab combined with etoposide, sobuzoxane or methotrexate, only resulted in a stable disease response. However, the fourth course of rituximab combined with a small dose of melphalan produced excellent results and the complete response continued for more than 15 months. It is possible that these two drugs may act synergistically.
Dihydrogen phosphate anion is selectively recognized by amide-based receptors bearing pyridyl moieties as hydrogen bond acceptors in 0.5% DMSO-acetonitrile.
A novel type of DNA intercalator, 8,8'-bis(dimethylaminomethyl)-2,2'-binaphthalene (1) based on 2,2'-binaphthalene skeleton, was prepared via homocoupling of 7-bromo-1-methylnaphthalene as a key step. The binding ability of 1 for calf thymus (CT) DNA was evaluated by UV-vis and fluorescence spectroscopic titrations and the melting temperature of CT DNA. The apparent association constant of 1 with CT DNA was larger than that of ethidium bromide (EB).