351
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Iwai Y, Hirano A, Awaya J, Matsuo S, Omura S. 1,3-Diphenethylurea from Streptomyces sp. No. AM-2498. J Antibiot (Tokyo) 1978; 31:375-6. [PMID: 659334 DOI: 10.7164/antibiotics.31.375] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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352
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Ito Y, Iwai Y, Ota C, Kawai S, Suzuki S. [At a scene of education. 12. A discussion at the conclusion of the series]. [KANGO KYOIKU] JAPANESE JOURNAL OF NURSES' EDUCATION 1978; 19:233-42. [PMID: 246996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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353
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Iwai Y. [At a scene of education. 11. Progress in nursing education at our school in the last 10 years]. [KANGO KYOIKU] JAPANESE JOURNAL OF NURSES' EDUCATION 1978; 19:172-5. [PMID: 246095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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354
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Iwai Y. [Scenes in education. 5. Home nursing in the nursing curriculum]. [KANGO KYOIKU] JAPANESE JOURNAL OF NURSES' EDUCATION 1977; 18:588-91. [PMID: 243060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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355
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Iwai Y, Tanaka H, Oiwa R, Shimizu S, Omura S. Studies on bacterial cell wall inhibitors. III. 3-amino-3-deoxy-D-glucose, an inhibitor of bacterial cell wall synthesis. BIOCHIMICA ET BIOPHYSICA ACTA 1977; 498:223-8. [PMID: 884150 DOI: 10.1016/0304-4165(77)90102-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
It was shown that 3-amino-3-deoxy-D-glucose, one of the constituents of the kanamycin molecule and a metabolite of Bacillus sp., inhibits the bacterial synthesis of cell wall. The antibiotic (100 microgram/ml) significantly inhibits the growth of Staphylococcus aureus FDA 209P as well as the incorporation of DL-[14C]alanine into the acid-insoluble macromolecular fraction of its growing cells in the presence of chloramphenicol (100 microgram/ml). In contrast, the antibiotic does not affect the incorporation of [3H]thymidine, [3H]uridine and L-[14C]leucine. The other constituents of kanamycin, 6-amino-6-deoxy-D-glucose and deoxystreptamine do not inhibit the synthesis of bacterial cell wall peptidoglycan.
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356
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Tanaka H, Iwai Y, Oiwa R, Shinohara S, Shimizu S, Oka T, Omura S. Studies on bacterial cell wall inhibitors. II. Inhibition of peptidoglycan synthesis in vivo and in vitro by amphomycin. BIOCHIMICA ET BIOPHYSICA ACTA 1977; 497:633-40. [PMID: 407940 DOI: 10.1016/0304-4165(77)90283-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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357
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Iwai Y. [In nursing education. I. Curriculum]. [KANGO KYOIKU] JAPANESE JOURNAL OF NURSES' EDUCATION 1977; 18:303-7. [PMID: 585755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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358
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Kon K, Kashiwakura T, Iwai Y. [Effective conferences. The role of the conference in nursing planning--in the case of muscular dystrophy]. KANGO TENBO. THE JAPANESE JOURNAL OF NURSING SCIENCE 1977; 2:16-20. [PMID: 242657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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359
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Omura S, Iwai Y, Hirano A, Nakagawa A, Awaya J, Tsuchya H, Takahashi Y, Masuma R. A new alkaloid AM-2282 OF Streptomyces origin. Taxonomy, fermentation, isolation and preliminary characterization. J Antibiot (Tokyo) 1977; 30:275-82. [PMID: 863788 DOI: 10.7164/antibiotics.30.275] [Citation(s) in RCA: 473] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
AM-2282, a new alkaloid has been isolated from cultures of Streptomyces sp. AM-2282 by solvent extraction and silica gel chromatography. The compound exhibits a strong absorption maximum at 292 nm and shows antimicrobial activity against fungi and yeast. The LD50 of its hydrochloride (i.p. in mice) is 6.6 mg/kg. The molecular formula of AM-2282 has been determined as C28H26N4O3. The producing strain, AM-2282 was classified as a new species and the name, Streptomyces staurosporeus AWAYA, TAKAHASHI and OMURA, nov. sp. is proposed.
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360
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Iwai Y. Development of electronic equipment--cooperation between hospital and industry. WORLD HOSPITALS 1976; 13:189-91. [PMID: 10305869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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361
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Higashino T, Iwai Y, Hayashi E. [Studies on pyrazolo(3,4-d)pyrimidine derivatives. III. On the reaction of 1-methyl- and 1-phenyl-4-chloro-1H-pyrazolo(3,4-d)-pyrimidine with carbanion (author's transl)]. YAKUGAKU ZASSHI 1976; 96:1352-6. [PMID: 1034693 DOI: 10.1248/yakushi1947.96.11_1352] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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362
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Omura S, Iwai Y, Suzuki Y, Awaya J, Konda Y. Production of quinoline-2-methanol and quinoline-2-methanol acetate by a new species of Kitasatoa Kitasato griseophaeus. J Antibiot (Tokyo) 1976; 29:797-803. [PMID: 993116 DOI: 10.7164/antibiotics.29.797] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Two metabolites have been isolated from the fermentation broth of a new species of Kitasatoa, Kitasatoa griseophaeus. These alkaloids have been identified as quinoline-2-methanol and quinoline-2-methanol acetate. The former exhibits hypoglycemic activity in the rat.
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363
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Omura S, Nishikiori T, Oiwa R, Iwai Y, Masuma R. A new antibiotic KM-214 produced by a strain of Bacillus. J Antibiot (Tokyo) 1976; 29:477-8. [PMID: 931818 DOI: 10.7164/antibiotics.29.477] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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364
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Yamamoto E, Iwai Y, Takagi T, Tsuda E, Muteki G. [Succinylcholine and low serum pseudocholinesterase activity - effect of administration of purified human pseudocholinesterase]. MASUI. THE JAPANESE JOURNAL OF ANESTHESIOLOGY 1975; 24:1006-11. [PMID: 1239519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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365
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Higashino T, Iwai Y, Hayashi E. [Studies on pyrazolo[3,4-d]pyrimidine derivatives. II. On the reaction of 4-chloro-1-methyl-1H-pyrazolo[3,4-d]pyrimidine with ketone carbanion]. YAKUGAKU ZASSHI 1974; 94:1191-5. [PMID: 4477580 DOI: 10.1248/yakushi1947.94.10_1191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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366
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Satoh K, Komiyama K, Kitao C, Iwai Y, Atsumi K. Isolation and characterization of a new antitumor antibiotic OS-3256-B from Streptomyces candidus var. azaticus. J Antibiot (Tokyo) 1974; 27:620-5. [PMID: 4474156 DOI: 10.7164/antibiotics.27.620] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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367
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Higashino T, Iwai Y, Hayashi E. [Studies on pyrazolo (3,4-d) pyrimidine derivatives. I. On the reactions of 1-methyl-and 1-phenyl-1H-pyrazolo-(3,4-d) pyrimidine with Grignard reagent (author's transl)]. YAKUGAKU ZASSHI 1974; 94:666-71. [PMID: 4472630 DOI: 10.1248/yakushi1947.94.6_666] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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368
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Ono H, Matsumae A, Iwai Y, Nakae M, Omura S. In vitro and in vivo activity of penicillinase inhibitor KA-107 against Staphylococcus aureus FS-1277. Antimicrob Agents Chemother 1973; 4:226-30. [PMID: 4758831 PMCID: PMC444533 DOI: 10.1128/aac.4.3.226] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
The activities of penicillinase inhibitor, KA-107 extracted from culture filtrates of Streptomyces gedanensis ATCC 4880, were studied by using penicillin-resistant S. aureus FS-1277 and by means of in vitro and in vivo tests.
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369
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Iwai Y, Ono H, Takeshima H, Yamaguchi N, Omura S. Screening and isolation of penicillinase inhibitor, KA-107. Antimicrob Agents Chemother 1973; 4:222-5. [PMID: 4202340 PMCID: PMC444532 DOI: 10.1128/aac.4.3.222] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
It is known that penicillin resistance of bacteria is mainly caused by the inactivation of penicillin by penicillinase derived from such strains. We have developed a screening procedure for penicillinase inhibitors. Several microorganisms were found to produce such inhibitors, and from the culture filtrate of Streptomyces gedanensis ATCC 4880 a penicillinase inhibitor, named KA-107, was isolated. The characteristics of this inhibitor were revealed by an in vitro test by using penicillinase derived from penicillin resistant Staphylococcus aureus, FS-1277. When KA-107 was used in combination with penicillin-G, ampicillin, d- or l-phenethicillin, the growth inhibitory activity of these penicillins was maintained.
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370
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Hata T, Umezawa I, Iwai Y, Katagiri M, Awaya J. Studies on the antitumor activity of an alazopeptin isolated from a new strain of Streptomyces. J Antibiot (Tokyo) 1973; 26:181-3. [PMID: 4205875 DOI: 10.7164/antibiotics.26.181] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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371
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Kobayashi T, Iwai Y. Recent data and their analysis from the Toshiba multiphasic-health-screening centre. MEDICAL & BIOLOGICAL ENGINEERING 1973; 11:15-26. [PMID: 4690332 DOI: 10.1007/bf02477291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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372
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Hata T, Omura S, Iwai Y, Ono H, Takeshima H. Studies on penicillinase inhibitors produced by microorganisms. J Antibiot (Tokyo) 1972; 25:473-4. [PMID: 4648490 DOI: 10.7164/antibiotics.25.473] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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373
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Yamashita H, Iwai Y, Yamane I. Proposal to establish the Asian and Oceanian Committee for the Standarization of Electromedical Equipment related to I.E.C. TC-62. AUSTRALASIAN RADIOLOGY 1972; 16:9-11. [PMID: 5080310 DOI: 10.1111/j.1440-1673.1972.tb01315.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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374
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Kobayashi T, Moriyama Y, Iwai Y. Health test systems in Japan. MEDICAL PROGRESS THROUGH TECHNOLOGY 1972; 1:26-34. [PMID: 4650496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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375
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Yago N, Sekiyama S, Kurokawa H, Iwai Y, Sato F, Shiragai A. A stereological study on size and number of mitochondria in zona fasciculata of rat adrenal cortex after whole-body x-irradiation. INTERNATIONAL JOURNAL OF RADIATION BIOLOGY AND RELATED STUDIES IN PHYSICS, CHEMISTRY, AND MEDICINE 1972; 21:1-10. [PMID: 4536927 DOI: 10.1080/09553007214550011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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376
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Iwai Y, Komiyama K, Oliwa R, Awaya J, Umezawa I. Studies on anti-L-1210 antibiotic produced by Streptomyces sp., No. OS-1998. THE KITASATO ARCHIVES OF EXPERIMENTAL MEDICINE 1971; 44:205-11. [PMID: 5170584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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377
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Sato T, Yamaguchi K, Katagiri M, Awaya J, Iwai Y. Studies on antibiotic O-2867, a new antiobiotic. J Antibiot (Tokyo) 1971; 24:774-8. [PMID: 5140524 DOI: 10.7164/antibiotics.24.774] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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378
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Yago N, Sekiyama S, Kurokawa H, Iwai Y, Sato F. Volume increase in rat adrenocortical mitochondria by single ACTH administration. A stereological study. ENDOCRINOLOGIA JAPONICA 1971; 18:359-64. [PMID: 4334758 DOI: 10.1507/endocrj1954.18.359] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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379
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Sekiyama S, Yago N, Iwai Y, Kurokawa H, Sato F. A stereological description of size and number of zona fasciculata mitochondria in rat adrenal cortex after hypophysectomy. ENDOCRINOLOGIA JAPONICA 1971; 18:365-9. [PMID: 5172182 DOI: 10.1507/endocrj1954.18.365] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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380
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Iwai Y, Komiyama K, Oiwa R, Awaya J, Umezawa I. Studies on water-soluble antitumor antibiotics produced by Streptomyces sp., No. OS-786. THE KITASATO ARCHIVES OF EXPERIMENTAL MEDICINE 1971; 44:95-105. [PMID: 5148026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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381
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Hata T, Omura S, Iwai Y, Nakagawa A, Otani M. A new antibiotic, kinamycin: fermentation, isolation, purification and properties. J Antibiot (Tokyo) 1971; 24:353-9. [PMID: 5091211 DOI: 10.7164/antibiotics.24.353] [Citation(s) in RCA: 74] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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382
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Iwai Y. [Hospital automation system]. NIHON ISHIKAI ZASSHI. JOURNAL OF THE JAPAN MEDICAL ASSOCIATION 1971; 65:411-22. [PMID: 5101936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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383
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Yago N, Kobayashi S, Sekiyama S, Kurokawa H, Iwai Y. Further studies on the submitochondrial localization of cholesterol side chain-cleaving enzyme system in hog adrenal cortex by sonic treatment. J Biochem 1970; 68:775-83. [PMID: 4395728 DOI: 10.1093/oxfordjournals.jbchem.a129414] [Citation(s) in RCA: 41] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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384
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Iwai Y. [Recent trend in medical and biological engineering observation at the 8th International Congress on Medical and Biological Engineering]. NIHON RINSHO. JAPANESE JOURNAL OF CLINICAL MEDICINE 1969; 27:3043-8. [PMID: 4391397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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385
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Sekiyama S, Iwai Y, Amitani J. Electron microscopic study on adrenal medullary cells of rats following whole body x-irradiation. JOURNAL OF RADIATION RESEARCH 1969; 10:8-16. [PMID: 5808557 DOI: 10.1269/jrr.10.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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386
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Sekiyama S, Iwai Y, Hirai M, Nakao T. Histological study on norethynodrel treated rat ovary. JIKEIKAI MEDICAL JOURNAL 1968; 15:271-7. [PMID: 12254411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
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387
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Sekiyama S, Takahashi I, Iwai Y, Matsuba M. [Effects of borethynodrel and EE3ME on induction of ovarian tumors by irradiation]. HORUMON TO RINSHO. CLINICAL ENDOCRINOLOGY 1968; 16:385-8. [PMID: 5749426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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