1801
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Meltz M, Okada S. Characterization of the rapidly labeled hybridizable RNA synthesized in L5178Y mouse leukemic cells. Hybridization lifetime studies. Biophys J 1971; 11:582-95. [PMID: 5104468 PMCID: PMC1483978 DOI: 10.1016/s0006-3495(71)86237-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
An attempt is made to characterize the rapidly labeled hybridizable RNA of L5178Y mouse leukemic cells which has been shown to have similar base sequences when synthesized in two different stages of the cell cycle. The size of rapidly labeled RNA molecules was heterogeneous. For labeling times of 20 min or less, the per cent of hybridization was maximal. With longer labeling times, the per cent of hybridization decreased as radioactivity appeared in long-lived species of low hybridization efficiency; the radioactivity profile resembled the optical density profile in sucrose gradients. The lifetime of newly synthesized hybridizable RNA was studied by pulse labeling exponentially growing cells and then "chasing" with nonradioactive uridine. The per cent of hybridization was studied as a function of chase time. Three RNA groups, which comprised different proportions of rapidly labeled hybridizable RNA, were distinguished. The short-lived group had a half-life of 10 min, much less than the values reported in the literature for messenger RNA of mammalian cells. The half-life of 1-1(1/2) hr observed for a medium-lived group more closely corresponds to that of messenger RNA. A long-lived group had a half-life of approximately 20 hr. Specific activity measurements during chase indicate the presence of a "pool" of labeled uridine derivatives. The uridine of this pool appears to be nonexchangeable with but dilutable by exogenous uridine. A nontoxic concentration of actinomycin D was added to the chase media in an attempt to block the "pool effect". A rapidly degradable RNA was demonstrable both by specific activity and per cent of hybridization measurements.
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1802
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O'Brien JS, Okada S, Ho MW, Fillerup DL, Veath ML, Adams K. Ganglioside storage diseases. FEDERATION PROCEEDINGS 1971; 30:956-69. [PMID: 4252532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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1803
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O'Brien JS, Okada S, Fillerup DL, Veath ML, Adornato B, Brenner PH, Leroy JG. Tay-Sachs disease: prenatal diagnosis. Science 1971; 172:61-4. [PMID: 5546285 DOI: 10.1126/science.172.3978.61] [Citation(s) in RCA: 136] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Fifteen pregnant women with a 25 percent risk of delivering a child with Tay-Sachs disease were monitored by amniocentesis and hexosaminidase A assays of amniotic fluid, uncultured amniotic cells, and cultured amniotic cells. Tay-Sachs disease was diagnosed prenatally in six fetuses; the diagnosis was confirmed in one child after birth and in five fetuses after therapeutic abortion. Prenatal diagnosis indicated the absence of Tay-Sachs disease in nine other fetuses; this diagnosis was confirmed postnatally in six, three are still in utero.
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1804
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Nitsuki H, Hinoki M, Hine M, Okada S, Fukui K. [Experimental study on the significance of sympathetic hypertonia in the manifestation of cervial equilibrium disorder (vertigo)--observation of nystagmus induced by injection of isoproterenol, a sympathetic beta receptor agonist into the cervical muscle]. NIHON JIBIINKOKA GAKKAI KAIHO 1971; 74:434-5. [PMID: 4398454] [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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1805
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Uchimaru F, Okada S, Kosasayama A, Konno T. Mass spectra of pyrazineN-oxides. Studies on pyrazine derivatives. III. J Heterocycl Chem 1971. [DOI: 10.1002/jhet.5570080118] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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1806
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Ushio N, Tada Y, Hinoki M, Hine M, Okada S. [Relationship between the deep receptor of the lumbar region and cerebellum in lumbar symptoms, cerebellar disorders (vertigo) and equilibrium disorders caused by whiplash injuries]. NIHON JIBIINKOKA GAKKAI KAIHO 1971; 74:436-7. [PMID: 4255304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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1807
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Matsumiya T, Umemoto S, Kawamura T, Okada S, Haga T. [Measures for reduction of Japanese tuberculosis mortality which is still several times higher than that of the U.S.A., Britain and other countries]. KEKKAKU : [TUBERCULOSIS] 1971; 46:4-5. [PMID: 5549796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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1808
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Okada S, Veath ML, Leroy J, O'Brien JS. Ganglioside GM2 storage diseases: hexosaminidase deficiencies in cultured fibroblasts. Am J Hum Genet 1971; 23:55-61. [PMID: 5581981 PMCID: PMC1706637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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1809
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Meltz ML, Okada S. Increased hybridization of RNA synthesized immediately after irradiation in cultured L5178Y mouse leukaemic cells. INTERNATIONAL JOURNAL OF RADIATION BIOLOGY AND RELATED STUDIES IN PHYSICS, CHEMISTRY, AND MEDICINE 1971; 19:287-92. [PMID: 5315009 DOI: 10.1080/09553007114550391] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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1810
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1811
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Sawada S, Okada S. Cysteamine, cystamine, and single-strand breaks of DNA in cultured mammalian cells. Radiat Res 1970; 44:116-32. [PMID: 5528819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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1812
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Sawada S, Okada S. Cysteamine, Cystamine, and Single-Strand Breaks of DNA in Cultured Mammalian Cells. Radiat Res 1970. [DOI: 10.2307/3573177] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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1813
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Ishida Y, Hinoki M, Hine S, Okada S, Niki H. [Cervico-muscular vertigo: experimental studies of its mechanism]. South Med J 1970; 63:Suppl:968-9. [PMID: 5460112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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1814
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Murao M, Okada S, Ito S, Iwasaki K, Sakai F. [Symposium: influenza]. KANSENSHOGAKU ZASSHI. THE JOURNAL OF THE JAPANESE ASSOCIATION FOR INFECTIOUS DISEASES 1970; 44:360-3. [PMID: 4990816] [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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1815
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O'Brien JS, Okada S, Chen A, Fillerup DL. Tay-sachs disease. Detection of heterozygotes and homozygotes by serum hexosaminidase assay. N Engl J Med 1970; 283:15-20. [PMID: 4986776 DOI: 10.1056/nejm197007022830104] [Citation(s) in RCA: 299] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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1816
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Hino S, Hinoki M, Kato S, Okada S, Niki H. [Vertigo caused by head and neck injuries]. NIHON JIBIINKOKA GAKKAI KAIHO 1970; 73:Suppl:1192-3. [PMID: 5466841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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1817
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Okada S, Yamakawa K. [Study on absenteeism among nursing students]. [KANGO KYOIKU] JAPANESE JOURNAL OF NURSES' EDUCATION 1970; 11:62-8. [PMID: 5201100] [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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1818
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Izumi S, Nishiura M, Sugimori M, Okada S, Takizawa H. A method of classifying solid leprosy bacilli based on the number of band structures on them. INTERNATIONAL JOURNAL OF LEPROSY AND OTHER MYCOBACTERIAL DISEASES : OFFICIAL ORGAN OF THE INTERNATIONAL LEPROSY ASSOCIATION 1970; 38:126-33. [PMID: 4920410] [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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1819
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Okada S, Torii K, Onisi M. [Experimental and clinical studies on the deodorant, Flagyl (Metronidazole)]. KOKU EISEI GAKKAI ZASSHI 1970; 20:45-9. [PMID: 5422779 DOI: 10.5834/jdh.20.45] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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1820
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Burki HJ, Okada S. Killing of Cultured Mammalian Cells by Radioactive Decay of Tritiated Thymidine at -196°C. Radiat Res 1970. [DOI: 10.2307/3572886] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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1821
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Burki HJ, Okada S. Killing of cultured mammalian cells by radioactive decay of tritiated thymidine at -196 degrees C. Radiat Res 1970; 41:409-24. [PMID: 5461813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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1822
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Sawada S, Okada S. Rejoining of Single-Strand Breaks of DNA in Cultured Mammalian Cells. Radiat Res 1970. [DOI: 10.2307/3572903] [Citation(s) in RCA: 62] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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1823
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Sawada S, Okada S. Rejoining of single-strand breaks of DNA in cultured mammalian cells. Radiat Res 1970; 41:145-62. [PMID: 5409693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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1824
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Okada S. [New curriculum of the School of Nursing, Mie Prefectural University, School of Medicine. Basic policy of our new curriculum]. [KANGO KYOIKU] JAPANESE JOURNAL OF NURSES' EDUCATION 1969; 10:2-6. [PMID: 5196346] [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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1825
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Okada S. Suppression of erythropoiesis by actinomycin D. 3. The effect of actinomycin D on the hemoglobin level of bone marrow erythrocytes and erythroblasts. ACTA MEDICINAE OKAYAMA 1969; 23:387-92. [PMID: 4244047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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