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Biomedical subjects

M Ohbayashi

Publications and source records attributed to M Ohbayashi.

At least 91 records · Page 5Linked to original sources
PubMed1983

[Nematode parasites of rodents in Malaysia. II. Trichostrongyloidea].

Many trichostrongyloid species parasitizing rodents in Malaysia were described in 1967 in a thesis that was never published. Some of these species have since been redescribed sometimes with, sometimes without reference to the thesis. The remaining species are redescribed using information given in the thesis and certain additional morphological data (in particular, the synlophe) taken from study of the paratypes. The species are reclassified according to criteria established in the most recent classification. The following genera are proposed: Brevistriatinae: - Macrostrongylus n. gen. characterized by a caudal bursa of Calypsostrongylus type and absence of synlophe. Nippostrongylinae: - Malaistrongylus n. gen. characterized by a synlophe of Heligmonoides type but with a larger number of ridges and by the fusion of rays 4 and 5 in the caudal bursa. - Rattus strongylus n. gen. characterized by small, subequal dorsal left ridges and a total number of ridges less than 20. - Sabanema n. gen. characterized by small subequal dorsal left ridges and a total number of ridges greater than 30. The species under consideration are the following: Hepatojarakus malayae Yeh, 1955; Pithecostrongylus bicapitatus n. sp. (= P. bicapitatus Ow Yang, 1967, in litt); Macrostrongylus ratti n. gen., n. sp. (= Macrostrongylus ratti Ow Yang, 1967, in litt.); Calypsostrongylus malayensis Durette-Desset, 1976 (= Brevistriata malayensis Ow Yang, 1967, in litt); Fissicauda callosciuri (Supperer et Kutzer, 1964); Fissicauda brevispicula n. sp. (= Brevistriata brevispicula Ow Yang, 1967, in litt.); Nippostrongylus brasiliensis (Travassos, 1914); Orientostrongylus tenorai Durette-Desset, 1970 (= Longistriata selangora Ow Yang, 1967, in litt.); O. krishnansamyi Durette-Desset et Lim-Boo-Liat, 1974 (= Longistriata malaccae Ow Yang, 1967, in litt.); Heligmonoides bulbosus n. sp. (= Heligmonina (Heligmonoides) bulbosa Ow Yang, 1967, in litt.); Heligmonoides lanceolatus n. sp. (= Heligmonina (Heligmonoides) lanceolata Ow Yang 1967, in litt.); Malaistrongylus odontospicularis n. gen., n. sp. (= Malaistrongylus odontospicularis Ow Yang, 1967, in litt.); Paraheligmonelloides triangulus n. sp. (= Longistriata triangulum Ow Yang, 1967, in litt.); P. annandalei n. sp. (= Longistriata annandalei Ow Yang, 1967, in litt.); P. rajah n. sp. (= Heligmonina (Heligmonoides) rajah Ow Yang, 1967, in litt.); Rattustrongylus odontoconus n. gen., n. sp. (= Longistriata odontocona Ow Yang, 1967, in litt.); R. rotundoconus n. sp. (= Longistriata rotundocona Ow Yang, 1967, in litt.); Sabanema sabana n. gen., n. sp. (= Longistriata sabana Ow Yang, 1967, in litt.); S. kepongi n. sp. (= Longistriata kepongi Ow Yang,

Animals↗
PubMed1981

Tallysomycin, a new antitumor antibiotic complex related to bleomycin. IV. New biosynthetic derivatives of tallysomycin.

A series of new biosynthetic derivatives of tallysomycins A and B were obtained by precursor amine-feeding fermentation. Certain diamines were incorporated into tallysomycins as the terminal amine moiety affording two classes of biosynthetic derivatives, with or without the Beta-lysine moiety in the subterminal position. Among 21 derivatives prepared, tallysomycin S10b was selected for further studies in view of its favorable therapeutic indices.

Actinomycetales↗
PubMed1980

BBM-928, a new antitumor antibiotic complex. I. Production, isolation, characterization and antitumor activity.

A complex of the antitumor antibiotic BBM-928 was produced by an actinomycete strain No. G455-101. Four components, BBM-928 A, B, C and D, were isolated in crystalline form and characterized. They were shown to be cyclic depsipeptide antibiotics containing a quinoline nucleus as the chromophore. BBM-928 A is a monoacetyl derivative of BBM-928 B and a diacetyl derivative of BBM-928 C. BBM-928 components exhibit antimicrobial activity against Gram-positive and acid-fast bacteria. BBM-928 A is highly active in mice against various experimental tumors including leukemia P388, leukemia L1210, melanoma B16, LEWIS lung carcinoma and sarcoma 180. BBM-928 B is less active than BBM-928 A, and BBM-928 C has no antitumor activity.

Animals↗