451
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Aoki N, Sasaki R. [Hypertension and stroke: screening methods]. NIHON RINSHO. JAPANESE JOURNAL OF CLINICAL MEDICINE 1980; 38:3082-7. [PMID: 7253251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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452
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Abstract
Hydroxyproline concentration in the NaCl-soluble, TCA-soluble, and residual fractions of heart muscle was chemically determined in 40 autopsy subjects (25 men and 15 women), to study the effects of aging. In the left ventricle, the total hydroxyproline content of the endocardium and papillary muscle increased significantly in relation to age; the increase was greatest in the TCA-soluble fraction, followed by the residual fraction. Statistical analysis revealed that hydroxyproline in the residual fraction increased from the epicardium to the endocardium and then to the papillary muscle. Significant negative correlations were found between heart weight and total hydroxyproline in the epicardium and endocardium. In the right ventricle, a significant negative correlation was noted between heart weight and total hydroxyproline content. Though no correlations were evident between age and hydroxyproline content in females, significant correlations were observed between age and the total hydroxyproline content of the endocardium and papillary muscle in males. Furthermore, soluble collagen increased in most parts of the heart in females, but insoluble collagen increased in all parts of the heart in males. It is concluded that the hydroxyproline content of heart muscle increases in proportion to age and is in inverse proportion to heart weight. The increase occurs in the TCA-soluble and residual fractions, and extends from the endocardium to the papillary muscle. More profound changes in collagen metabolism are observed in males.
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453
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Narita H, Ikura K, Yanagawa S, Sasaki R, Chiba H, Saimyoji H, Kumagai N. 2,3-Bisphosphoglycerate in developing rabbit erythroid cells. J Biol Chem 1980; 255:5230-5. [PMID: 7372634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Rabbits were made anemic to different extents by phenylhydrazine injections so as to vary the developmental stages of the erythroid cells in their peripheral blood and bone marrow. It was found that the more severe the anemia, the lower the concentration of glycerate-2,3-P2 in the bone marrow cells and in the circulating erythroid cells. The glycerate-2,3-P2 level was shown to rise during erythroid differentiation in a linear relationship to the hemoglobin level, corresponding to the equation Y = 0.03x + 0.29, where y is the concentration of glycerate-2,3-P2 (micromoles per ml packed cells) and x is the concentration of hemoglobin (milligrams per packed cells). The bone marrow cells were fractionated on a size (i.e. maturity) basis and enzyme activities in the fractionated cells were measured. The accumulation of glycerate-2,3-P2 was found to be primarily attributable to the increase in glycerate-2,3-P2 synthase activity. Glycerate-2,3-P2 phosphatase and phosphofructokinase increased as the cells matured from the polychromatic stages to become reticulocytes while pyruvate kinase and phosphoglyceromutase decreased. The changes in phosphofructokinase and pyruvate kinase appear to be advantageous for glycerate-2,3-P2 accumulation. The two enzyme activities directly responsible for the synthesis and the breakdown of glycerate-2,3-P2 are probably manifested by a single protein, glycerate-2,3-P2 synthase-phosphatase.
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454
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Narita H, Ikura K, Yanagawa S, Sasaki R, Chiba H, Saimyoji H, Kumagai N. 2,3-Bisphosphoglycerate in developing rabbit erythroid cells. J Biol Chem 1980. [DOI: 10.1016/s0021-9258(19)70775-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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455
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Sasaki R, Sugimoto M. [Terminal transferase in hematopoietic and leukemic cells (author's transl)]. TANPAKUSHITSU KAKUSAN KOSO. PROTEIN, NUCLEIC ACID, ENZYME 1979; 24:1404-16. [PMID: 395573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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456
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Hisamichi S, Sasaki R, Sugawara N, Yanbo T, Yamagata S. Stomach cancer in various age groups (Japan) as detected by gastric mass survey. J Am Geriatr Soc 1979; 27:439-43. [PMID: 469144 DOI: 10.1111/j.1532-5415.1979.tb01723.x] [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: 12/15/2022]
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457
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Arakawa Y, Fujita S, Ohtoh K, Katsuhara N, Sasaki R, Oguchi K, Satoh K, Kaneda H, Honda T. [Liver biopsy findings of patients surviving fulminant hepatitis (author's transl)]. NIHON SHOKAKIBYO GAKKAI ZASSHI = THE JAPANESE JOURNAL OF GASTRO-ENTEROLOGY 1979; 76:1667-76. [PMID: 537193] [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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458
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Sasaki R. [Terminal transferase of the hematopoietic cells]. NIHON RINSHO. JAPANESE JOURNAL OF CLINICAL MEDICINE 1979; Suppl:2115-7. [PMID: 491090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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459
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Horikoshi A, Sasaki R, Mizoguchi H, Miura Y, Takaku F, Amaki I. Alterations in the response to erythropoietin and RNA-dependent DNA polymerase activity in mouse spleen cells infected with Friend leukemia virus. Cancer Res 1979; 39:1841-6. [PMID: 85492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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460
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Narita H, Ikura K, Sasaki R, Chiba H. Regulation of protein synthesis in rabbit reticulocyte lysates by 2,3-bisphosphoglycerate. Biochem Biophys Res Commun 1979; 86:755-61. [PMID: 426819 DOI: 10.1016/0006-291x(79)91777-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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461
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Narita H, Utsumi S, Ikura K, Sasaki R, Chiba H. Comparative studies of the enzymes involved in 2,3-bisphosphoglycerate metabolism of rabbit erythrocytes and muscle cells. THE INTERNATIONAL JOURNAL OF BIOCHEMISTRY 1979; 10:25-38. [PMID: 217747 DOI: 10.1016/0020-711x(79)90135-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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462
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Sasaki R, Takaku F, Sakamoto S, Kanoh Y. Terminal deoxynucleotidyl transferase activity and B cell markers in chronic myelogenous leukemia blast crisis. Acta Haematol 1979; 62:143-7. [PMID: 118612 DOI: 10.1159/000207560] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
High terminal deoxynucleotidyl transferase activities were found in blast cells having B cell markers in 3 patients suffering from chronic myelogenous leukemia. The blast cells from these patients were lymphoblastic in appearance. Two of these cases were treated with vincristine and prednisolone. They responded well to this therapy.
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463
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Ikura K, Narita H, Sasaki R, Chiba H. Immunochemical and enzymatic properties of bisphosphoglyceromutase/phosphatase and phosphoglyceromutase from human erythrocytes. EUROPEAN JOURNAL OF BIOCHEMISTRY 1978; 89:23-31. [PMID: 212268 DOI: 10.1111/j.1432-1033.1978.tb20892.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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464
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Ueda M, Hirose M, Sasaki R, Chiba H. Regulation of glucose 1,6-bisphosphate level in liver. III. Purification and properties of bovine glucose 1,6-bisphosphate synthase. J Biochem 1978; 83:1721-30. [PMID: 670163 DOI: 10.1093/oxfordjournals.jbchem.a132086] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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465
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Chiba H, Sasaki R. Functions, of 2,3-bisphosphoglycerate and its metabolism. CURRENT TOPICS IN CELLULAR REGULATION 1978; 14:75-116. [PMID: 32014 DOI: 10.1016/b978-0-12-152814-0.50007-1] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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466
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Sasaki R, Sakamoto S. The function and clinical significance of DNA polymerases in human hematopoietic cells. NIHON KETSUEKI GAKKAI ZASSHI : JOURNAL OF JAPAN HAEMATOLOGICAL SOCIETY 1977; 40:1104-16. [PMID: 273361] [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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467
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Abstract
Inactivation of yeast phosphoglyceromutase (tetramer) with 1,2-cyclohexanedione correlates with the modification of six arginyl residues per mole of the enzyme. Protection experiments using 3-phosphoglycerate suggest that four arginyl residues (one residue per subunit) are involved in the binding of the substrate to the enzyme. The modified enzyme reversibly regained its activity upon incubation with hydroxylamine. The reactivity of lysyl residues which have been shown to be involved in the active site is markedly reduced in the enzyme inactivated with 1,2-cyclohexanedione, indicating that the lysyl and arginyl residues are in close proximity in the active site.
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468
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Sasaki R, Takaku F, Kanou Y, Sakamoto S. High terminal deoxynucleotidyl transferase activity in the spleen of a patient with chronic myelogenous leukemia in blastic crisis. NIHON KETSUEKI GAKKAI ZASSHI : JOURNAL OF JAPAN HAEMATOLOGICAL SOCIETY 1977; 40:500-4. [PMID: 270270] [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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469
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Kakita K, Fukuma S, Taketomo S, Sasaki R, Omachi J. [The tentorial meningioma fed by "marginal tentorial artery" arising from the external carotid artery--a case report and review of literature (author's transl)]. NO SHINKEI GEKA. NEUROLOGICAL SURGERY 1977; 5:279-83. [PMID: 557749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
It is well known that a Bernasconi-Cassinari artery is an important finding at diagnosis of the abnormality in tentorium. Since Bernasconi and Cassinari reported the artery in 1956, many reports have been presented and showed that the artery arose from the intracavernous portion of the internal carotid artery. We presented a 54-year-old female with tentorial meningioma. In selective external carotid angiography, the artery feeding the tumor was revealed arising from the accessory meningeal artery, which came off the internal maxillary artery and passed into the carnium through the foramen ovale, and took the same course of "Bernasconi-Cassinari artery". This angiographic finding suggests that it is possible for marginal tentorial artery to arise from an external carotid arterial system. It is said in the anatomical studies, when the trunk of primitive maxillary artery which is one of maxillo-carotid anastomotic arteries in fetus regresses, "marginal tentorial artery" usually remains linked to the internal carotid artery. But, if this transition of "the artery" from the external to the internal carotid artery failed, it is easily conceived the artery results in the origin of accessory meningeal artery, a branch of the external carotid artery.
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470
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Tsuboyama A, Sasaki R, Takaku F, Mizoguchi H, Miura Y. [Megaloblastic anemia due to folic acid deficiency observed in a pregnant women with hereditary spherocytosis (author's transl)]. [RINSHO KETSUEKI] THE JAPANESE JOURNAL OF CLINICAL HEMATOLOGY 1976; 17:1122-7. [PMID: 1034036] [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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471
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Sasaki R, Utsumi S, Sugimoto E, Chiba H. Subunit structure and multifunctional properties of yeast phosphoglyceromutase. EUROPEAN JOURNAL OF BIOCHEMISTRY 1976; 66:523-33. [PMID: 182494 DOI: 10.1111/j.1432-1033.1976.tb10578.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
1. A new and efficient method for preparation of pure phosphoglyceromutase from baker's yeast (Saccharomyces cerevisiae) is described. Proteolytic alterations of the enzyme during extraction can be minimized by grinding the dried yeast with aluminium oxide at low temperature. 2. Yeast phosphoglyceromutase contains four highly similar, probably idential subunits of molecular weight 28000, a conclusion based on the following observations. Polyacrylamide gel electrophoresis containing dodecylsulphate or urea gives a single band, indicating that the enzyme is composed of four subunits similar in their molecular weight and net charge. Cyanogen bromide cleavage and tryptic digestion of the enzyme yield the number of peptides expected for identical subunites from the amino acid composition analysis. 3. The purified phosphoglyceromutase preparation has bisphosphoglyceromutase activity synthesizing 2,3-bisphosphoglycerate from 1,3-bisphosphoglycerate and 3-phosphoglycerate. It has been reported that yeast phosphoglyceromutase catalyzes the hydrolysis of 2,3-bisphosphoglycerate at the same active site which catalyzes the phosphoglyceromutase reaction [Sasaki, R. et al (1971) Biochim. Biophys, Acta, 227, 584-594, 595-607]. Immunological studies and chemical modification experiments indicate that bisphosphoglyceromutase activity also is due to the phosphoglyceromutase protein and involves amino groups which have been shown to be essential for the other two activities.
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472
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Ikura K, Sasaki R, Narita H, Sugimoto E, Chiba H. Multifunctional enzyme, bisphosphoglyceromutase/2,3-bisphosphoglycerate phosphatase/phosphoglyceromutase, from human erythrocytes. Evidence for a common active site. EUROPEAN JOURNAL OF BIOCHEMISTRY 1976; 66:515-22. [PMID: 182493 DOI: 10.1111/j.1432-1033.1976.tb10577.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Bisphosphoglyceromutase and 2,3-bisphosphoglycerate phosphatase activities responsible for 2,3-bisphosphoglycerate metabolsim in human red cells are displayed by the same enzyme protein which has phosphoglyceromutase activity [Sasaki, R., et al. (1975) Eur J. Biochem. 50, 581-593]. This enzyme was subjected to chemical modification by trinitrobenzenesulfonate. The three enzyme activities were inactivated by trinitrobenzenesulfonate at the same rate. The sulfhydryl content of the enzyme was unchanged during trinitrophenylation, indicating that derivatization was through the amino group. Trinitrophenylation of about one amino group per mole of the enzyme resulted in complete loss of the three activities. Both 2,3-bisphosphoglycerate and 1,3-bisphosphoglycerate inhibited trinitrophenylation and effectively protected the enzyme from inactivation. Although monophosphoglycerates did not show any protective effect at concentrations which should be adequate based upon their kinetic constants, they were protective at higher concentrations. Inactivation by trinitrophenylation was an apparent first-order reaction. The dissociation constant of the enzyme - 2,3-bisphosphoglycerate complex was determined by analyzing the first-order reaction on the assumption that the protective effect of 2,3-bisphosphoglycerate was due to competition with trinitrobenzenesulfonate. The dissociation constant was in good agreement with kinetic constants of 2,3-bisphosphoglycerate in the enzyme reactions, which indicated that 2,3-bisphosphoglycerate did indeed exert its protective effect through competition with trinitrobenzenesulfonate for an amino group of the enzyme. The protective effect of monophosphoglycerates could be rationalized with kinetic evidence that 2-phosphoglycerate at high concentrations interacts with the 2,3-bisphosphoglycerate binding site. These results indicate that the enzyme exhibits the three enzyme activities at a common active site at which one amino group essential for binding of bisphosphoglycerates is located. Based on the multifunctional properties of this enzyme, a possible mechanism was discussed for regulation of 2,3-bisphosphoglycerate metabolism in human red cells.
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473
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Sasaki R, Horikoshi A, Kano Y, Takaku F. RNA dependent DNA polymerase in human hematopoietic cells. NIHON KETSUEKI GAKKAI ZASSHI : JOURNAL OF JAPAN HAEMATOLOGICAL SOCIETY 1976; 39:292-7. [PMID: 62483] [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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474
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Sasaki R, Mura M, Takeuchi T, Furihata C, Matsushima T. Premature induction of amylase in pancreas and parotid gland of growing rats by dexamethasone. Biochim Biophys Acta Gen Subj 1976; 428:619-26. [PMID: 179580 DOI: 10.1016/0304-4165(76)90190-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Studies were made on changes in the contents of alpha-amylase (EC 3.2.1.1) in the pancreas and parotid gland of rats during postnatal development, on the premature induction of this enzyme by hormones and on the existence of specific glucocorticoid receptors in these tissues. The amylase content in the pancreas increased from the 9th day after birth and reached the adult level on the 28th day, its content in the parotid gland increased rapidly from the 16th to the 28th day after birth and then rose more gradually to the adult level. Injection of dexamethasone into rats 6--8 days after birth induced increase in the amylase of the pancreas but not the parotid gland. However, injection of dexamethasone into weanling rats 21--23 days after birth resulted in precocious induction of amylase in both tissues. Specific glucocorticoid receptors were detectable in the parotid gland of rats from 6 days after birth but were almost undetectable in the pancreas until adolescence.
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475
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Yamagata S, Sasaki R, Sakurada H, Iwai S. [Ischemic colitis]. NIHON RINSHO. JAPANESE JOURNAL OF CLINICAL MEDICINE 1976; 34:994-1003. [PMID: 988243] [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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