4801
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Nakamura M, Sakamoto H. Modification of the growth of human mycoplasmas in tissue culture by infection with influenza virus and Japanese encephalitis (JE) virus. PROCEEDINGS OF THE SOCIETY FOR EXPERIMENTAL BIOLOGY AND MEDICINE. SOCIETY FOR EXPERIMENTAL BIOLOGY AND MEDICINE (NEW YORK, N.Y.) 1969; 131:343-8. [PMID: 5787108 DOI: 10.3181/00379727-131-33874] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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4802
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Matsuzawa T, Hatakeyama T, Nakamura M, Abe M. [Quantitative studies on microautoradiography of tritium labelled compound in vivo. 4. The durations of the cell cycle for the ascites tumor cells of ten-lines in rats]. NIHON IGAKU HOSHASEN GAKKAI ZASSHI. NIPPON ACTA RADIOLOGICA 1969; 29:312-4. [PMID: 5259784] [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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4803
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Matsuzawa T, Abe M, Nakamura M. [Radiosensitivity of agregated tumor cells]. NIHON IGAKU HOSHASEN GAKKAI ZASSHI. NIPPON ACTA RADIOLOGICA 1969; 29:319-21. [PMID: 5259785] [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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4804
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Miyazaki T, Nakamura M. Acid-soluble nucleotides analysis of bovine coronary artery and aorta. JAPANESE HEART JOURNAL 1969; 10:259-66. [PMID: 5306966 DOI: 10.1536/ihj.10.259] [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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4805
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Kyo Y, Okamoto T, Nakamura M, Matsuoka K, Mishina Y. [Study on the Porter-Silber reaction--chromogenicity in various concentration of sulfuric acid]. RINSHO BYORI. THE JAPANESE JOURNAL OF CLINICAL PATHOLOGY 1969; 17:403-407. [PMID: 5816864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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4806
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Nakamura M. [My concept of student autonomy. A step toward becoming a specialist in the health field to serve the people]. [KANGO KYOIKU] JAPANESE JOURNAL OF NURSES' EDUCATION 1969; 10:27-9. [PMID: 5194085] [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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4807
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Hattori E, Yatsuki K, Miyazaki T, Sata T, Nakamura M. Adenine nucleotides of myocardium from rats treated with isoproterenol and-or Mg- or K-deficiency. JAPANESE HEART JOURNAL 1969; 10:218-24. [PMID: 5306965 DOI: 10.1536/ihj.10.218] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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4808
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Okamoto T, Kyo Y, Matsuoka K, Nakamura M, Mishina Y. [Determination of 17-ketogenic steroids. 1. Comparison between indirect and direct methodw with NaBi03 and NaIO4 methods]. RINSHO BYORI. THE JAPANESE JOURNAL OF CLINICAL PATHOLOGY 1969; 17:392-6. [PMID: 4308504] [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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4809
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Motomura K, Shibata A, Nakamura M, Matuura R. Fatty acid monolayers in the expanded state. II. The effect of compression velocities. J Colloid Interface Sci 1969; 29:623-8. [PMID: 5788923 DOI: 10.1016/0021-9797(69)90213-6] [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: 01/16/2023]
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4810
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Nakamura M, Yamada K. [Spontaneous diabetes mellitus in animals]. SAISHIN IGAKU. MODERN MEDICINE 1969; 24:534-43. [PMID: 4890888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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4811
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4812
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Abstract
SUMMARYThe lecithinase and haemolytic activity of thirty strains ofCl. welchiiisolated from food, faeces, and soil, was studied. The strains from foods produced smaller amounts of lecithinase and were, in general, less haemolytic than the strains isolated from soil and faeces.The haemolytic activity ofCl. welchiion erythrocytes from different animal species displayed considerable variation. Sheep erythrocytes were the most sensitive to the action of alpha toxin, whereas rabbit blood was most sensitive to haemolysis by theta toxin. The degree of haemolysis was also dependent upon the concentration of the enzyme, and temperature and length of incubation.The haemolytic activity of commercial lecithinase was observed to be similar to the haemolytic activity of the alpha toxin ofCl. welchii. This finding provides further evidence that the haemolytic and lecithinase activities ofCl. welchiiare due to one substance, the alpha toxin. Exposure of commercial lecithinase to heat resulted in the destruction of its haemolytic properties.
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4813
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Nakamura M, Schulze JA, Cross WR. Factors affecting lecithinase activity and production in Clostridium welchii. J Hyg (Lond) 1969; 67:153-62. [PMID: 4322821 PMCID: PMC2130698 DOI: 10.1017/s002217240004153x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
SUMMARYA variety of factors that affect lecithinase activity and lecithinase production byCl. welchiiwere studied. The lecithinase activity was time and temperature dependent. The optimum temperature varied from 30° to 46° C. according to the strain ofCl. welchiiemployed. Maximum lecithinase activity was produced after 12–60 hr. There was considerable strain variation. This could easily account for the differences in the published data.Commercial purified lecithinase was more readily destroyed by heat than the lecithinase produced byCl. welchiiin culture media. The enzyme inactivation pattern at 60° C. was similar to that at 90° C. This is not in agreement with the reports of others who found that less enzyme was inactivated at the higher temperatures.Acid pH values completely inactivated the enzyme. However, alkaline pH values did not significantly destroy the enzyme. The lecithovitellin reaction was completely inhibited at pH values of 1–5. The optimum pH for the reaction was around pH 7–8.The production of lecithinase was dependent upon the pH of the culture medium. One strain produced measurable lecithinase at pH values of 5·5–8·5, whereas another strain produced lecithinase only at pH values 6–5–7–5.Lecithin stimulated the production of lecithinase in a chemically defined medium.
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4814
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Nakamura M, Sasanuma M, Sato S, Watanabe M, Yamashita H, Iguchi Y, Ejiri A, Nakai S, Yamaguchi S, Sagawa T, Nakai Y, Oshio T. Absorption Structure Near theKEdge of the Nitrogen Molecule. ACTA ACUST UNITED AC 1969. [DOI: 10.1103/physrev.178.80] [Citation(s) in RCA: 126] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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4815
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Nakamura M. [Studies on the rheumatoid factor. Detection of IgA- and IgG-rheumatoid factors]. ARERUGI = [ALLERGY] 1969; 18:129-36. [PMID: 4181626] [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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4816
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Koguchi K, Ede K, Sagara Y, Nakamura M. Effect of thallium acetate on the growth of bacteria. Kurume Med J 1969; 16:163-8. [PMID: 4982833 DOI: 10.2739/kurumemedj.16.163] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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4817
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Nakamura M, English G, Magee DF. Relationship between pancreozymin and cholinergic stimulation of pancreatic secretion. Can J Physiol Pharmacol 1969; 47:33-8. [PMID: 5761844 DOI: 10.1139/y69-006] [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: 01/16/2023]
Abstract
In conscious pancreatic-fistula dogs with low gastroenterostomies the interactions of pancreozymin (PZ) with methacholine were studied. Combinations of methacholine and PZ depressed amylase, lipase, and total protein secretion when doses were high, i.e. above 2 units/min PZ with 2 μg/min methacholine as background, and above 4 μg/min methacholine with 2 units/min PZ as background. Atropine depressed the enzyme response to Boots but not to Jorpes PZ. It did not alter the depression produced by high doses of PZ and methacholine in combination. These data are consistent with the view that the actions of PZ and methacholine on enzyme production are closely related.
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4818
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Nakamura M. Maintenance of infectivity of M. lepraemurium in vitro for sixteen years by means of lyophilization. Determination by bacteriologic and morphologic observation of the infecting bacilli. INTERNATIONAL JOURNAL OF LEPROSY AND OTHER MYCOBACTERIAL DISEASES : OFFICIAL ORGAN OF THE INTERNATIONAL LEPROSY ASSOCIATION 1969; 37:64-7. [PMID: 4897240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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4819
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Nakamura M, Privett OS. Metabolism of lipids in rat testes: interconversions and incorporation of linoleic acid into lipid classes. Lipids 1969; 4:41-9. [PMID: 5766848 DOI: 10.1007/bf02531793] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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4820
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Adachi M, Atsumi T, Saito N, Nakamura M, Horiuchi Y. Detection of IgA- and IgG-rheumatoid factors by antiglobulin augmentation technique. INTERNATIONAL ARCHIVES OF ALLERGY AND APPLIED IMMUNOLOGY 1969; 35:77-87. [PMID: 5813149 DOI: 10.1159/000230161] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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4821
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Nakajima S, Nakamura M, Magee DF. Effect of secretin on gastric acid and pepsin secretion in response to various stimuli. THE AMERICAN JOURNAL OF PHYSIOLOGY 1969; 216:87-91. [PMID: 4885441 DOI: 10.1152/ajplegacy.1969.216.1.87] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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4822
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Hattori E, Miyazaki T, Nakamura M. Incorporation of adenosine and adenosine triphosphate into rat myocardium. JAPANESE HEART JOURNAL 1969; 10:47-52. [PMID: 5305454 DOI: 10.1536/ihj.10.47] [Citation(s) in RCA: 12] [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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4823
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Nakamura M. On the pathogenesis of cerebral and myocardial infarction. JAPANESE CIRCULATION JOURNAL 1968; 32:1721. [PMID: 5756567] [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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4824
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Nakamura M, Sakamoto H. [Effect of nucleic acid, DNA, amino acids and mucin on the growth of Mycoplasma]. Nihon Saikingaku Zasshi 1968; 23:777-82. [PMID: 4237727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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4825
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