651
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Yamamoto R, Munakata H, Yamamoto M, Yosizawa Z. Hormonal effects on the biosynthesis of sulfated glycoprotein in a microsomal fraction of the endometrium of rabbit uterus. J Biochem 1978; 83:537-42. [PMID: 632235 DOI: 10.1093/oxfordjournals.jbchem.a131941] [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: 12/23/2022] Open
Abstract
A crude microsomal fraction (M-Fr) was separated from the endometrial scrapings of uteri of ovariectomized rabbits with or without hormonal treatment. The effects of estrogen and progesterone on the incorporation into M-Fr of L-[U-14C]-fucose and N-acetyl-D-[6-3H]-glucosamine from their nucleotides were investigated. Estrogen increased the incorporation of these sugars, whereas progesterone suppressed this effect. The results of fractionation on a DEAE-Sephadex A-25 (Cl- form) column of the isotope-labelled complex saccharide mixtures, obtained by pronase digestion of the incubation mixtures, indicated that biosynthesis of sulfated glycoprotein was most sensitive to the hormones among the complex saccharides in M-Fr. Thus, a hormonal effects on the biosynthesis of sulfated glycoprotein in the endometrium of ovariectomized rabbit has been unambiguously confirmed at the microsomal level.
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652
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Yamamoto R, Matsuoka H, Doyama M. Structural relaxation of the dense random packing model for amorphous iron. ACTA ACUST UNITED AC 1978. [DOI: 10.1002/pssa.2210450136] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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653
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Kukla GJ, Angell JK, Korshover J, Dronia H, Hoshiai M, Namias J, Rodewald M, Yamamoto R, Iwashima T. New data on climatic trends. Nature 1977. [DOI: 10.1038/270573a0] [Citation(s) in RCA: 64] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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654
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Nevins DJ, Huber DJ, Yamamoto R, Loescher WH. beta-d-Glucan of Avena Coleoptile Cell Walls. PLANT PHYSIOLOGY 1977; 60:617-21. [PMID: 16660149 PMCID: PMC542675 DOI: 10.1104/pp.60.4.617] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
A specific glucanase was used to liberate a noncellulosic beta-d-glucan from isolated cell walls of Avena sativa coleoptile tissue. Cell walls of this tissue contain as much as 7 to 9 mg of glucan/100 mg of dry wall. Because of the specific action pattern of the enzyme, a linkage sequence of.. 1 --> 4 Glc 1 --> 3 Glc 1 --> 4 Glc.. is indicated and the predominance of trisaccharide and tetrasaccharide as hydrolytic products suggests a rather regular repeating pattern in the polysaccharide. The trisaccharide and the tetrasaccharide are tentatively identified as 3-O-beta-cellobiosyl-d-glucose and 3-O-beta-cellotriosyl-d-glucose, respectively. Recovery of these oligosaccharides following glucanase treatment of native wall material was feasible only after wall-bound glucosidases were inactivated. In the absence of enzyme inactivation the released fragments were recovered as glucose. The beta-d-glucan was not extracted from walls by either hot water or protease treatment.Cell walls prepared from auxin-treated Avena coleoptile segments yielded less glucan than did segments incubated in buffer suggesting an auxin effect on the quantity of this wall component. No IAA-induced change in the ratio of the trisaccharide and tetrasaccharide could be detected, suggesting no shift in the 1,3 to 1,4 linkage ratio. While the enzyme acts directly on the beta-d-glucan, no elongation response was apparent when Avena sections were treated with the purified glucanase. The presence of the glucan was not associated with any wound response which could be attributed to the preparation of coleoptile segments. The relationship of glucan metabolism to auxin growth responses is discussed.
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655
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Ibrahim AA, Yamamoto R. Arginine catabolism by Mycoplasma meleagridis and its role in pathogenesis. Infect Immun 1977; 18:226-9. [PMID: 908618 PMCID: PMC421217 DOI: 10.1128/iai.18.1.226-229.1977] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
A thin-layer chromatography technique was used to study the arginine metabolism of Mycoplasma meleagridis. The technique reflected the enzyme activity of the dihydrolase pathway through detection of readily visible end products on X-ray film. Strains of M. meleagridis differing in their pathogenicity for turkeys did not vary in arginine metabolism. In addition, no significant difference was observed in plasma arginine concentrations between M. meleagridis-infected and uninfected poults. It was concluded that the pathogenesis of M. meleagridis infection in turkeys was not based on its competition with the host for arginine.
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656
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657
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Ibrahim AA, Yamamoto R. Morphology and Growth Cycle of Mycoplasma meleagridis Viewed by Scanning-Electron Microscopy. Avian Dis 1977. [DOI: 10.2307/1589325] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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658
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Ibrahim AA, Yamamoto R. Morphology and growth cycle of Mycoplasma meleagridis viewed by scanning-electron microscopy. Avian Dis 1977; 21:415-21. [PMID: 907583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The three-dimensional structure of Mycoplasma meleagridis strain RY-39A was studied by scanning-electron microscopy. The morphologic forms observed between 12 hours and 7 days suggest that the organism undergoes a sequential metamorphosis in its development. Single rounded forms in lag phase give rise to larger cells and filaments in the log phase, which fragment into coccus forms in the late stationary phase.
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659
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Kaminoya S, Yamamoto R. [Nursing of patients with protatic hypertrophy associated with various other clinical conditions--a case of a patient with personality problems]. [KANGO GIJUTSU] : [NURSING TECHNIQUE] 1977; 23:75-83. [PMID: 65488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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660
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Lewis JE, Carmack CE, Yamamoto R, Granger GA. Antibodies against human lymphokines: I. Methods for induction of antibodies capable of neutralizing stable (alpha) and unstable (beta) lymphotoxins released in vitro by activated human lymphocytes. J Immunol Methods 1977; 14:163-76. [PMID: 557069 DOI: 10.1016/0022-1759(77)90006-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Various methods were employed to induce antibodies in rabbits that were capable of neutralizing different families of lymphotoxins (LT). Both stable (alpha-LT) and unstable (beta-LT) molecules, released by activated human lymphocytes in vitro, were neutralized. The different LT families were first separated into their respective groups by physical-chemical methods. Immunization with small quantities of antigen yielded a high percentage of responder animals. Techniques were developed for eliciting alpha-LT antibodies using as little as 2--3 ml of a cell-free supernatant. The situation was more difficult, however, when the unstable beta-LT molecules were employed as antigens. We found that because of the low concentration and lability of beta-LT in supernatants, the immunizing dose had to be: a) handled rapidly, b) larger than that used with the alpha-LT, and c) injected at closer intervals and over a longer immunization protocol. Physical-chemical studies supperted the concept that the LT-neutralizing activity in the immune serum was immunoglobulin.
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661
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McCapes RH, Yamamoto R, Ghazikhanian G, Dungan WM, Ortmayer HB. Antibiotic Egg Injection to Eliminate Disease I. Effect of Injection Methods on Turkey Hatchability and Mycoplasma meleagridis Infection. Avian Dis 1977. [DOI: 10.2307/1589364] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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662
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McCapes RH, Yamamoto R, Ghazikhanian G, Dungan WM, Ortmayer HB. Antibiotic egg injection to eliminate disease. I. Effect of injection methods on turkey hatchability and Mycoplasma meleagridis infection. Avian Dis 1977; 21:57-68. [PMID: 843304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Mycoplasma meleagridis infection in turkey hatching eggs was eliminated by injecting eggs with a combination of tylosin and gentamicin. Hatched F1 and F2 progeny remained free of egg-transmitted infection. Contact exposure was experienced in one negative flock. Of the preincubation injection procedures studied, a drilled hole on the small end of the egg was the inoculation site easiest to administer and best tolerated by the embryo. The embryo can tolerate a dose of gentamicin sulfate injected at 10 days of incubation that would be toxic if administered before incubation. Requirements for maintaining progeny free of infection are discussed.
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663
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Tuboi M, Yamamoto R. [Dark adaptation curves of rhesus monkeys studied by double flash ERG (author's transl)]. NIPPON GANKA GAKKAI ZASSHI 1976; 80:1028-32. [PMID: 827201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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664
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Lewis AE, Yamamoto R, Carmack C, Lundak RL, Granger GA. Lymphocyte effector molecules: an vitro production method for obtaining liter volumes of supernatants from mitogen-stimulated human lymphocytes. J Immunol Methods 1976; 11:371-83. [PMID: 1084376 DOI: 10.1016/0022-1759(76)90131-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
An in vitro method has been developed utilizing phytohemagglutinin (PHA) activated lymphocytes obtained from human tonsils and adenoids which permit the accumulation of multi-liter quantities of cell-free supernatants containing lymphotoxin and other lymphocyte effector molecules (LEM). An enriched media is employed which contains a large molecular weight, heat stable bovine serum fraction which supports lymphoid cell activation and levels of LEM secretion equal to that of cultures maintained in medium supplemented with whole serum. Elimination of whole serum from the media greatly reduces overall protein concentrations and facilitates concentration and purification studies. Various technical aspects of these cultures have been examined, i.e.: 1) cell concentration, 2) kinetics of LT production over a ten-day period, 3) mitogen dosage, and 4) types of media. Supernatants can be harvested repeatedly from a single culture over the ten day period, thus doubling the yield of LEM collected from a single culture.
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665
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Tamura H, Kondo K, Yamamoto R. [Comparative phase contrast and scanning electron microscopic observation of designated cancer cells in ascites and esophagus (author's transl]. RINSHO BYORI. THE JAPANESE JOURNAL OF CLINICAL PATHOLOGY 1976; 24:354-8. [PMID: 787596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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666
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Sato T, Sasaki K, Yamamoto R. Image processing system using incoherent image feedback. APPLIED OPTICS 1976; 15:717-720. [PMID: 20165046 DOI: 10.1364/ao.15.000717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
By combining a TV system with suitable optical systems an image processor which uses the technique of image feedback is constructed. The special features are the simplicity of the arrangement and the flexibility for the treatable input images as well as the ability as a real-time processor. Results for ghost image elimination under several conditions and for sharping of images are shown.
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667
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McCapes RH, Yamamoto R, Ortmayer HB, Scott WF. Injecting Antibiotics into Turkey Hatching Eggs to Eliminate Mycoplasma meleagridis Infection. Avian Dis 1975. [DOI: 10.2307/1589076] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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668
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McCapes RH, Yamamoto R, Ortmayer HB, Scott WF. Injecting antibiotics into turkey hatching eggs to eliminate Mycoplasma meleagridis infection. Avian Dis 1975; 19:506-14. [PMID: 1164318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Hatching eggs from a commercial strain of turkeys infected naturally with Mycoplasma meleagridis were injected before incubation with various doses of tylosin, gentamicin, erythromycin, and chloramphenicol, individually and in combination. The antibiotics were inoculated into the albumen through a hole made in the small end of the egg. Gentamicin was the only drug consistently effective in reducing infection. With inoculation by the procedure described, the embryos tolerated several dose levels of gentamicin, tylosin, and erythromycin well.
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669
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Yamamoto R. [Health problems in a small village observed by a public health nurse]. [HOKENFU ZASSHI] THE JAPANESE JOURNAL FOR PUBLIC HEALTH NURSE 1975; 31:290-1. [PMID: 1041298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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670
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Matsumoto M, Yamamoto R. Protective quality of an aluminum hydroxide-absorbed broth bacterin against infectious coryza. Am J Vet Res 1975; 36:579-82. [PMID: 1124872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Various aspects of immunity induced by a merthiolate-inactivated, aluminum hydroxide-absorbed chicken meat infusion (CMI) broth bacterin prepared from Haemophilus gallinarium were studied. A bacterin dose of 10-8 colony-forming units (CFU)/ml was the minimal dose which protected a significant number of chickens against intrasinus challenge with live organisms. This finding simplifies production procedures because yields of 10-8 CFU/ml of CMI broth are routinely obtained. A significant number of chickens vaccinated with the bacterin were immune to intrasinus challenge through 9 months postvaccination. On a comparative basis, an egg-yolk bacterin prepared from the same strain protected for only 3 months. Birds vaccinated with broth bacterins prepared from 2 strains of H gallinarum (17756 and M) which shared common surface antigens were immune to intrasinus inoculation with the homologous but not to the heterologous organisms. Preliminary data indicated that the broth bacterin prevented a sharp decrease in egg production when the immunity of vaccinated birds was challenged (instrasinus) at the height of egg production.
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671
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Endo M, Yamamoto R, Yosizawa Z, Sasai Y, Saito N. Urinary chondroitin of epidermolysis bullosa cystrophica et albo-papuloidea (Pasini). Clin Chim Acta 1974; 57:249-53. [PMID: 4434645 DOI: 10.1016/0009-8981(74)90404-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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672
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673
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Ghazikhanian G, Yamamoto R. Characterization of pathogenic and nonpathogenic strains of Mycoplasma meleagridis: manifestations of disease in turkey embryos and poults. Am J Vet Res 1974; 35:417-24. [PMID: 4819724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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674
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Ghazikhanian G, Yamamoto R. Characterization of pathogenic and nonpathogenic strains of Mycoplasma meleagridis: in ovo and in vitro studies. Am J Vet Res 1974; 35:425-30. [PMID: 4856496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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675
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Matsumoto M, Yamamoto R. Demonstration of complement-dependent and independent systems in immune inactivation of Mycoplasma meleagridis. J Infect Dis 1973; 127:Suppl:S43-51. [PMID: 4734701 DOI: 10.1093/infdis/127.supplement_1.s43] [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: 01/12/2023] Open
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