Search PubMed⌕ Search

Biomedical subjects

H Seto

Publications and source records attributed to H Seto.

At least 163 records · Page 9Linked to original sources
PubMed1986

A novel macrolide antibiotic, notonesomycin A.

Fermentation of Streptomyces aminophilus subsp. notonesogenes 647-AV1 produced a mixture of antifungal antibiotics. Notonesomycin A, the main component has been characterized as a new macrolide antibiotic containing a sulfate group, a malonate moiety, two deoxysugars and a 1,3,4-trisubstituted benzene system in the molecule. It was active against some fungi and Gram-positive bacteria in vitro and effective against the sheath blight disease of rice plant in a green house test.

Animals↗
PubMed1986

[Fundamental and clinical studies on imipenem/cilastatin sodium in the field of obstetrics and gynecology].

Fundamental and clinical studies on imipenem/cilastatin sodium (MK-0787/MK-0791) in the field of obstetrics and gynecology were carried out. The concentration of MK-0787 in uterine tissue was 5.9-12.2 micrograms/g at 30 minutes after an administration of 500 mg/500 mg of MK-0787/MK-0791 by a 30-minute intravenous drip infusion and 0.9-1.1 micrograms/g at 185 minutes. The clinical application of the drug to 9 patients with gynecological infections produced "good" results with all the patients clearly showing clinical or bacteriological improvement. Neither side effects nor abnormal laboratory findings were observed. Based on these findings, MK-0787/MK-0791 appeared to be a useful antibiotic for the treatment obstetrical and gynecological infections.

Adnexa Uteri↗
PubMed1985

13C nuclear magnetic resonance studies on bacteriochlorophyll a biosynthesis in Rhodopseudomonas spheroides S.

The 13C NMR spectra were analyzed in bacteriochlorophyll a and magnesium protoporphyrin methyl ester formed in Rhodopseudomonas spheroides S. in the presence of L-[1-13C]glutamate and [2-13C]glycine. After reassignment of three alpha-pyrrolic carbons (C-9, -14 and -16) of bacteriochlorophyll a, the spectra showed that C-2 of glycine was preferentially incorporated into the eight-carbon atoms in these tetrapyrrole macrocycles derived from C-5 of 5-aminolevulinic acid (ALA). C-2 of glycine was also incorporated specifically into methyl ester carbon of magnesium protoporphyrin IX methyl ester and methoxyl carbon of methoxycarbonyl group attached to isocyclic ring of bacteriochlorophyll a. No enrichment of these nine-carbon atoms was observed in the spectrum of bacteriochlorophyll formed in the presence of L-[1-13C]glutamate, showing exclusive operation of ALA synthase on bacteriochlorophyll biosynthesis.

Bacteriochlorophylls↗