Search PubMed⌕ Search

Biomedical subjects

G Tamura

Publications and source records attributed to G Tamura.

At least 289 records · Page 16Linked to original sources
PubMed1969

Antiviral and antitumor antibiotics. XIV. Effects of ascochlorin and other respiration inhibitors on multiplication of Newcastle disease virus in cultured cells.

Antiviral activity on Newcastle disease virus was examined with some respiration inhibitors including ascochlorin, rotenone, antimycin A(3), piericidin A, dicoumarol, 2, 4-dinitrophenol, pentachlorophenol, and fatty acids. Of the chemicals tested, ascochlorin and rotenone showed significant inhibitory effect on the viral growth in cultured cells as determined by the plate and tube assay methods. Dose response of ascochlorin and rotenone was observed in rate and final yield of hemagglutinin synthesis. Ratio of infectivity for hemagglutinin was nearly equal at any test concentrations of ascochlorin. Thus, the possibility of inhibition of virus maturation by the antibiotic was excluded. Ascochlorin had no activity on virus particles and on viral adsorption onto host cells.

Adsorption↗
PubMed1969

Antiviral and antitumor antibiotics. XX. Effects of rotenone, deguelin, and related compounds on animal and plant viruses.

Rotenoids and related compounds were investigated for their effects on animal and plant viruses. Of 35 compounds examined, rotenone, rotenone norketone, acetylrotenone, acetylrotenone norketone, deguelin, deguelic acid, dehydrodeguelin, and isotubanol norketone, all used at low concentrations, suppressed the growth of Newcastle disease and herpes simplex viruses as determined by the agar diffusion, plaque inhibition method. Most of the compounds likewise decreased the number of necrotic spots on tobacco mosaic virus-infected leaf discs. Only derrisic acid completely inhibited the local lesion formation at subphytotoxic concentrations. Correlation of antiviral activity with respiratory inhibition of these compounds is discussed.

Animals↗