351
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Matsuzaki S, Tanaka S, Suzuki M, Hamana K. A possible role of cadaverine in the biosynthesis of polyamines in the Japanese newt testis. ENDOCRINOLOGIA JAPONICA 1981; 28:305-12. [PMID: 6796394 DOI: 10.1507/endocrj1954.28.305] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Polyamine content in testes of various vertebrates was studied extensively. Putrescine, spermidine and spermine were detected in all the animals examined, although the distribution pattern varied greatly from animal to animal. Cadaverine was detected only in amphibian testes; sym-homospermidine was found not only in testes but also in various other tissues of amphibians and of some reptiles. In the newt testis the concentration of cadaverine was lower than that of any other polyamines in summer, but there was a great increase in cadaverine content from autumn to winter. The testicular content of cadaverine was greater than that of other polyamines in winter. There was a gradual decrease in the cadaverine content in spring. The spermidine and spermine levels, which were rather low in winter, increased in spring and reached a peak in summer when spermatogenesis was active. The testicular concentration of putrescine that was much higher than that of spermidine or spermine throughout the year, increased only a little in summer. There was a significant negative correlation between the cadaverine levels and four other polyamine levels. Exogenous cadaverine decreased the testicular levels of putrescine. Mammalian gonadotropins decreased the cadaverine levels and increased the levels of other polyamines. A partially purified LH fraction from pituitaries of bullfrog, Rana catesbeiana, was also potent in depleting cadaverine of the testes of newts kept at 8 degrees C. These results suggest that testicular cadaverine suppresses the biosynthesis of polyamines, especially spermidine and spermine which are closely associated with spermatogenesis.
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352
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Matsuzaki S, Gordon E, Lieber CS. Increased alcohol dehydrogenase independent ethanol oxidation at high ethanol concentrations in isolated rat hepatocytes: the effect of chronic ethanol feeding. J Pharmacol Exp Ther 1981; 217:133-7. [PMID: 7009832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Rates of ethanol oxidation in isolated rat hepatocytes increased with increasing ethanol concentrations even at near-saturation of the alcohol dehydrogenase (ADH) pathway. After inhibition of ADH by pyrazole, approximately 30% of ethanol-oxidizing activity remained and this activity of the non-ADH pathway was also dependent upon ethanol concentration. The apparent Km of th non-ADH pathway for ethanol was 13 mM, which is comparable to the value for the microsomal ethanol oxidizing system. Inhibition of catalase by azide affected the activity of the non-ADH pathway by less than 10%. After chronic ethanol feeding, the rates of ethanol oxidation in isolated hepatocytes and liver slices increased significantly compared to those in pair-fed controls. This adaptive increase of ethanol oxidation was more striking at a high ethanol level (30 mM) than at a low one (10 mM). Significant differences between the two groups remained even after inhibition of ADH and catalase. The results suggest that the microsomal ethanol oxidizing system may account for the major part of the non-ADH pathway.
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353
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Araki M, Kobayashi A, Matsuzaki S, Kamoshita I, Horiuchi A. [Diabetic retinopathy related to blood sugar and lipids: ten year follow up studies (author's transl)]. NIPPON GANKA GAKKAI ZASSHI 1981; 85:315-321. [PMID: 7270356] [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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354
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Matsuzaki S, Iwamura K, Itakura M, Katsunuma T. Abnormalities of serum cholinesterase isozyme in liver cirrhosis and hepatoma (Part II). GASTROENTEROLOGIA JAPONICA 1980; 15:543-9. [PMID: 6256250 DOI: 10.1007/bf02773757] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The pattern of serum cholinesterase (ChE) isozyme appeared to be characteristically abnormal in liver cirrhosis and hepatoma. In liver cirrhosis an abnormal fast moving peak was observed in 92.5% of fifty three patients studied. Further, diminishing activities of ChE 3 and 4, accompanied by an emergence of weak bands with unusual rates of flow, were noted in 58.5%. The latter abnormality was always associated with the former one. The pattern in hepatoma was essentially the same with liver cirrhosis, though diversity of bands was also present in some cases. It was ascertained that these abnormalities was due to sialic acid content bound to the enzyme, but was not due to production of abnormal enzyme protein moiety. It was suggested by clinical analysis that the degree of the abnormality of the isozyme may be useful for the diagnosis and prognostic evaluation of liver cirrhosis.
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355
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Matsuzaki S, Iwamura K, Katsunuma T, Kamiguchi H. Separation of serum cholinesterase isozymes by an improved polyacrylamide gel electrophoresis and its application for the study of liver diseases (Part I). GASTROENTEROLOGIA JAPONICA 1980; 15:33-40. [PMID: 7358258 DOI: 10.1007/bf02773702] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A method for separation of serum (pseudo) cholinesterase isozymes was studied in order to take advantage of it for clinical research. By employing modifications on a previously reported method, analytical time was shortened to a half (1.5 days) of the original method without abolishing qualitative and quantitative accuracy. Thus, the present method facilitated its clinical application for the study of this isozyme. A normal pattern of the isozyme in Japanese in this method was determined by the analysis of sixteen normal subjects, which appeared to be very consistent in each individual under the present conditions. The distribution of relative activities of respective isozymes measured on a densitogram coincided well with that measured calorimetrically. Abnormalities of the zymogram were newly found in patients with liver cirrhosis and metastatic liver cancer, which seemed to be characteristic to the respective diseases. Isozyme patterns in the liver and ascites were also measured and compared with those in serum.
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356
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Lieber CS, Baraona E, Matsuda Y, Salaspuro M, Hasumura Y, Matsuzaki S. Hepatotoxicity of acetaldehyde. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1980; 126:397-411. [PMID: 7405688 DOI: 10.1007/978-1-4684-3632-7_29] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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357
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Gordon E, Pikkarainen P, Matsuzaki S, Lieber CS. The effect of chronic ethanol consumption on pathways of ethanol metabolism. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1980; 132:475-80. [PMID: 7191621 DOI: 10.1007/978-1-4757-1419-7_48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The contribution of the known hepatic pathways for the disposal of ethanol was studied utilizing two different experimental designs. In vitro studies were carried out in hepatocytes isolated from rats fed Purina chow. Rates of ethanol oxidation in these preparations increased with increasing levels of ethanol (10-50 mM). After inhibition of alcohol dehydrogenase (ADH) by pyrazole (2 mM) and the catalase by azide (1 mM) approximately 25% of the ethanol oxidizing activity remained. The residual activity was also dependent upon ethanol concentration and the apparent Km was 13 mM. Hepatocytes from ethanol-fed rats exhibited rates of ethanol oxidation which were also dependent upon the concentration of ethanol. The rates were higher in the hepatocytes from the ethanol-fed rats than in the controls. The addition of inhibitors of ADH and catalase lowered the rates, but abolished neither the differences nor the concentration dependency. In the in vivo studies, ethanol elimination rates were measured in alcohol-fed and control baboons by using a constant ethanol infusion to maintain blood ethanol at three different levels: 5, 10 or 50 mM. Ethanol elimination rate was accelerated with increasing concentration, particularly in alcohol-fed baboons. These observations indicate that a pathway other than the low Km alcohol dehydrogenase participates in alcohol oxidation and is responsible in part for the adaptive increase in ethanol metabolism associated with chronic ethanol consumption.
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358
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Friedman HS, Matsuzaki S, Choe SS, Fernando HA, Celis A, Zaman Q, Lieber CS. Demonstration of dissimilar acute haemodynamic effects of ethanol and acetaldehyde. Cardiovasc Res 1979; 13:477-86. [PMID: 487386 DOI: 10.1093/cvr/13.8.477] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
To determine whether the acute cardiac depressant effects of ethanol could be attributed to its metabolite (acetaldehyde), either ethanol or acetaldehyde was intravenously infused into pentobarbital anaesthetised, closed-chest dogs. At a venous blood ethanol level of 199 +/- 43 (SE) mg . dl-1, ejection fraction had decreased from 35 +/- 2 to 30 +/-2%, P less than 0.05, max dP/dt/end-diastolic volume from 14.0 +/- 2.1 to 8.6 +/- 1.1 kPa . s-1 . cm-3 (105 +/- 16 to 65 +/- 8 mmHg . s-1 . cm-3), P less than 0.02, whereas end-diastolic volume (P less than 0.005), myocardial oxygen consumption (P less than 0.05) and coronary blood flow (P less than 0.005) had increased. Higher ethanol levels exaggerated these changes when peak arterial acetaldehyde was 20.2 +/- mumol . litre-1. By contrast, infusion of acetaldehyde to a peak blood level comparable with that produced by ethanol increased cardiac output from 2.4 +/- 0.2 to 2.8 +/- 0.2 litre-1 . min-1 P less than 0.01), coronary sinus oxygen saturation from 46 +/- 4 to 55 +/- 3% (P less than 0.25) and reduced systemic resistance from 8.0 +/- 0.7 to 6.3 +/- 0.5 kPa . litre-1 . min-1 (60 +/- 5 to 47 +/- 4 mmHg . litre-1 . min-1) (P less than 0.001). High dosage of acetaldehyde to a level of 129 +/- 23 mumol . litre-1 produced elevation of cardiac output (P less than 0.001), ejection fraction (P less than 0.01), coronary blood flow (P less than 0.02), whereas systemic resistance (P less than 0.001), heart rate (P less than 0.05) and myocardial oxygen consumption (P less than 0.05) decreased. Discontinuation of acetaldehyde infusion significantly reversed these changes. Max dP/dt/left ventricular end-diastolic volume and left ventricular end-diastolic volume were not significantly altered by acetaldehyde. Thus, ethanol depresses cardiac performance and increases myocardial oxygen consumption. By contrast, acetaldehyde at levels produced by ethanol metabolism improves cardiac performance, consequent to afterload reduction, and reduces myocardial oxygen consumption.
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359
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Yora T, Matsuzaki S, Kondo Y, Ui N. Changes in the contents of multiple components of rat pituitary thyrotropin in altered thyroid states. Endocrinology 1979; 104:1682-5. [PMID: 446389 DOI: 10.1210/endo-104-6-1682] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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360
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Hamana K, Matsuzaki S. Occurrence of sym-homospermidine in the Japanese newt, Cynops pyrrhogaster pyrrhogaster. FEBS Lett 1979; 99:325-8. [PMID: 428556 DOI: 10.1016/0014-5793(79)80983-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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361
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Matsuzaki S, Suzuki M, Hamana Y, Ito K. [Rise of intraglandular polyamine and histamine levels in thyroid neoplasms]. HORUMON TO RINSHO. CLINICAL ENDOCRINOLOGY 1979; 27:265-8. [PMID: 436311] [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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362
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Matsuzaki S, Kikuchi K, Iwamura K, Inaba M, Sugimoto E, Itakura M, Ueno F, Nakazaki H. [A case of eosinophilic granuloma (inflammatory fibroid polyp) of the colon (author's transl)]. NIHON SHOKAKIBYO GAKKAI ZASSHI = THE JAPANESE JOURNAL OF GASTRO-ENTEROLOGY 1979; 76:126-32. [PMID: 423383] [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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363
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Matsuzaki S. [Endogenous morphine-like peptide]. NIHON NAIBUNPI GAKKAI ZASSHI 1978; 54:1307-13. [PMID: 107051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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364
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Matsuzaki S, Suzuki M, Hamana K, Itoh K. Elevated levels of polyamines and histamine in adenocarcinomas of the thyroid. J Clin Endocrinol Metab 1978; 47:1038-41. [PMID: 263733 DOI: 10.1210/jcem-47-5-1038] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The concentrations of polyamines (putrescine, spermidine, and spermine) and of histamine in normal and diseased thyroids were determined with an automated amino acid analyzer. A total of 39 specimens was investigated: 7 specimens of normal tissue, 6 adenocarcinomas, 2 specimens of tissues adjacent to adenocarcinoma, 13 specimens from treated Graves' disease, 7 follicular adenomas, 2 adenomatous goiters, and 2 specimens of Hashimoto's thyroiditis. Mean putrescine levels in tissues from normal thyroid, adenocarcinomas, Graves' disease, and follicular adenoma were 26, 143, 20, and 12 nmol/g wet tissue, respectively. The mean levels of both spermidine and spermine were slightly but significantly higher in adenocarcinomas than in other thyroid tissues. The molar ratio of spermidine to spermine was about 0.5 both in the normal and diseased thyroid tissues, except for specimens of thyroiditis. Histamine was detected in 3 of the 6 cases of thyroid carcinomas, and in case of adenomatous goiter. The data suggest that measurement of polyamines, especially putrescine, may be useful for diagnosis of thyroid adenocarcinomas.
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365
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Feinman L, Baraona E, Matsuzaki S, Korsten M, Lieber CS. Concentration dependence of ethanol metabolism in vivo in rats and man. Alcohol Clin Exp Res 1978; 2:381-5. [PMID: 367207 DOI: 10.1111/j.1530-0277.1978.tb04748.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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366
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Matsuzaki S, Kakegawa T, Suzuki M, Hamana K. Thyroid function and polyamines. III. Changes in ornithine decarboxylase activity and polyamine contents in the rat thyroid during hyperplasia and involution. ENDOCRINOLOGIA JAPONICA 1978; 25:129-39. [PMID: 668626 DOI: 10.1507/endocrj1954.25.129] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Changes in ornithine decarboxylase (ODC) activity and in polyamine contents of the rat thyroid were studied under various experimental conditions. Methylthiouracil (MTU) treatment produced several-fold increases in the thyroid ODC activity and in the content of putrescine, spermidine and spermine within a week. While serum thyrotropin (TSH) levels increased gradually up to 3 weeks, the content of both putrescine and spermidine tended to reach a plateau after 2 weeks of the goitrogen treatment; spermine content continued to increase progressively for 3 weeks. Discontinuance of MTU at 7 days resulted in a rapid decline in the elevated thyroid ODC activity, followed by a diminution of putrescine, spermidine and RNA contents. Thyroidal putrescine, spermidine and RNA responded more sensitively to both introduction and withdrawal of TSH stimulation than thyroidal spermine and DNA. Excess iodide, having no effect on the basal level of thyroid ODC, suppressed the MTU-induced increase in this enzyme activity without affecting circulating TSH, thyroxine (T4) and triiodothyronine (T3) levels. There was a significant negative correlation between the ODC activity and intrathyroidal concentration of iodine in MTU-pretreated rats. Theophylline increased the thyroid weight and ODC activity when given to rats fed with a subeffective dose of MTU. Analyses of serum TSH, T4, T3 and of thyroidal iodine revealed that TSH-induced thyroid ODC activity was suppressed by increased circulating thyroid hormones and/or intrathyroidal iodine. Furthermore, it was suggested that thyroid hormones and excess iodide acted directly on the thyroid to alter polyamine biosynthesis, possibly by changing the responsiveness of the gland to TSH.
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367
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Matsuzaki S, Suzuki M, Hamana Y. [Quantitative changes in polyamines and histamine during the formation of goiter in rats]. HORUMON TO RINSHO. CLINICAL ENDOCRINOLOGY 1978; 26:31-4. [PMID: 688642] [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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368
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Lieber CS, DeCarli LM, Matsuzaki S, Ohnishi K, Teschke R. The microsomal ethanol oxidizing system (MEOS). Methods Enzymol 1978; 52:355-67. [PMID: 97494 DOI: 10.1016/s0076-6879(78)52039-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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369
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Matsuzaki S, Sieber CS. Increased susceptibility of hepatic mitochondria to the toxicity of acetaldehyde after chronic ethanol consumption. Biochem Biophys Res Commun 1977; 75:1059-65. [PMID: 861024 DOI: 10.1016/0006-291x(77)91489-9] [Citation(s) in RCA: 67] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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370
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Teschke R, Matsuzaki S, Ohnishi K, DeCarli LM, Lieber CS. Microsomal ethanol oxidizing system (MEOS): current status of its characterization and its role. Alcohol Clin Exp Res 1977; 1:7-15. [PMID: 412430 DOI: 10.1111/j.1530-0277.1977.tb05759.x] [Citation(s) in RCA: 90] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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371
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Teschke R, Matsuzaki S, Ohnishi K, Hasumura Y, Lieber CS. Metabolism of alcohol at high concentrations: role and biochemical nature of the hepatic microsomal ethanol oxidizing system. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1977; 85A:257-80. [PMID: 562604 DOI: 10.1007/978-1-4899-5181-6_18] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
At intermediate and higher alcohol concentrations, ethanol metabolism proceeds via alcohol dehydrogenase (ADH) and the microsomal ethanol oxidizing system (MEOS), whereas catalase plays no significant role. Following prolonged ethanol consumption, an enhancement of both MEOS activity as well as the rates of ethanol metabolism occurs; the latter persisted despite inhibition of ADH by pyrazole and catalase by sodium axide, suggesting the involvement of MEOS in the adaptive increase. MEOS exhibits characteristics similar to those of other microsomal drug metabolizing enzymes and can be differentiated and isolated from both ADH and catalase activities. Reconstitution of MEOS activity was achieved with partially purified cytochrome P-450 and NADPH-cytochrome c reductase in the presence of synthetic phospholipid.
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372
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Matsuzaki S. Reduction of 5'-nucleotidase activity in rat thyroid and adenohypophysis following methylthiouracil treatment. ENDOCRINOLOGIA JAPONICA 1976; 23:49-54. [PMID: 179798 DOI: 10.1507/endocrj1954.23.49] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
5' -Nucleotidase activity was determined in rat thyroid and some other organs employing a specific assay method. During the course of methylthiouracil (MTU) treatment, thyroid 5'-nucleotidase activity decreased significantly. This decrease was specific for this enzyme since the activity of neutral phosphatase did not change and the activity of alkaline phosphatase and Mg2+-activated adenosine triphosphatase increased markedly. The 5'-nucleotidase activity of the adenohypophysis also decreased following MTU treatment. This enzyme activity of the liver, heart and whole brain remained unchanged after the treatment. The role of this enzyme was discussed in relation to tissue growth and increased contents of RNA and DNA in the thyroid and adenohypophysis.
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373
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Matsuzaki S, Suzuki M. Thyroid function and polyamines. II. Thyrotropin stimulation of polyamine biosynthesis in the rat thyroid. ENDOCRINOLOGIA JAPONICA 1975; 22:339-45. [PMID: 811458 DOI: 10.1507/endocrj1954.22.339] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Thyrotropin (TSH) injected intraperitoneally caused a significant rise in the activity of L-ornithine decarboxylase of rat thyroid within 4 hr. TSH-releasing hormone (TRH) also increased the activity of this enzyme in a dose-related manner and of putrescine-activated S-adenosyl-L-methionine decarboxylase, probably through the increased secretion of TSH from the pituitary. Administration of methylthiouracil (MTU) in the drinking water to rats resulted in an increase of these two enzymes in the thyroid. Maximal activation was observed 4 days after the initiation of MTU treatment for both enzymes. The intracellular level of putrescine and spermidine increased during the rapid phase of thyroid enlargement caused by MTU treatment. The spermine concentration, however, was relatively constant during the treatment. The RNA/DNA ratio followed a pattern very similar to that exhibited by the spermidine/spermine ratio. These results indicate that TSH stimulates the biosynthesis of polyamines by increasing the activity of the decarboxylases in the thyroid. The findings further suggest that polyamines play a role in the regulation of thyroid growth and nucleic acid metabolism.
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374
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Matsuzaki S. [Electron microscopic observations of malignant melanoma. The comparative studies on intracellular organelle in the malignant melanoma of the choroid and in the malignant melanoma of the skin (author's transl)]. NIPPON GANKA GAKKAI ZASSHI 1975; 79:567-82. [PMID: 1237991] [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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375
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Korsten MA, Matsuzaki S, Feinman L, Lieber CS. High blood acetaldehyde levels after ethanol administration. Difference between alcoholic and nonalcoholic subjects. N Engl J Med 1975; 292:386-9. [PMID: 1110723 DOI: 10.1056/nejm197502202920802] [Citation(s) in RCA: 364] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Blood actaldehyde and ethanol levels were measured in 11 subjects, six with chronic alcholoism and five nonalcholic controls, after alcohol had been given intravenously. Despite a progressive fall in blood ethanol over a range of 54 to 33 mM/acetaldehyde did not decrease in any of the 11 subjects. The mean acetaldehyde plateau level was significantly (p less than 0.001) higher in alcoholic (42.7 plus or minus 1.2 mum) than in nonalcoholic (26.5 plus or minus 1.5 mum) subjects. When the mean blood ethanol concentration reached 24 mM,the acetaldehyde plateau ended abruptly in each subject. The ethanol concentration at which this fall of blood acetaldehyde occurred suggests desaturation of an ethanol oxidizing system other than alcohol dehydrogenase and indicates that at high ethanol blood levels, such a system contributes to ethanol oxidation. The highet acetaldehyde levels in alcholism may result from both greater activity of this system and mitochondrial damage, and could contribut to the neurologic, hepatic and cardiac complications of alcoholism.
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376
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Takahashi T, Matsuzaki S, Nunez J. Modifications in soluble protein kinase and cyclic-AMP binding capacity of developing rat brain. J Neurochem 1975; 24:303-9. [PMID: 163291 DOI: 10.1111/j.1471-4159.1975.tb11880.x] [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: 12/13/2022]
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377
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Lieber CS, DeCarli LM, Feinman L, Hasumura Y, Korsten M, Matsuzaki S, Teschke R. Effect of chronic alcohol consumption on ethanol and acetaldehyde metabolism. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1975; 59:185-227. [PMID: 241214 DOI: 10.1007/978-1-4757-0632-1_14] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Hepatic metabolism of ethanol to acetaldehyde by the alcohol dehydrogenase (ADH) pathway is associated with the generation of reducing equivalents as NADH. Conversely, reducing equivalents are consumed when ethanol oxidation is catalyzed by the NADPH dependent microsomal ethanol oxidizing system (MEOS). Since the major fraction of ethanol metabolism proceeds via ADH and since the oxidation of acetaldehyde also generates NADH, an excess of reducing equivalents is produced. This explains a variety of effects following acute ethanol administration, including hyperlactacidemia, hyperuricemia, enhanced lipogenesis and depressed lipid oxidation. To the extent that ethanol is oxidized by the alternate MEOS pathway, it slows the metabolism of other microsomal substrates. Following chronic ethanol consumption, adaptive microsomal changes prevail, which include enhanced ethanol and drug metabolism, and increased lipoprotein production. Eventually, injury develops with alterations of the rough endoplasmic reticulum and structural and functional abnormalities of the mitochondria.
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378
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Matsuzaki S, Suzuki M. Thyroid function and polyamines. I. Rapid fluctuation of thyroid ornithine decarboxylase activity in response to change in circulating thyrotropin level in the rat. ENDOCRINOLOGIA JAPONICA 1974; 21:529-37. [PMID: 4377129 DOI: 10.1507/endocrj1954.21.529] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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379
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Matsuzaki S. Casein phosphatase in the developing rat brain. NIHON SEIRIGAKU ZASSHI. JOURNAL OF THE PHYSIOLOGICAL SOCIETY OF JAPAN 1974; 36:433-5. [PMID: 4376175] [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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380
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Suzuki M, Kakegawa T, Matsuzaki S. Proceedings: Negative feedback action of thyroid hormone on the pituitary gland. NIHON SEIRIGAKU ZASSHI. JOURNAL OF THE PHYSIOLOGICAL SOCIETY OF JAPAN 1974; 36:405. [PMID: 4478631] [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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381
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Matsuzaki S, Kakegawa T, Suzuki M. [Proceedings: Correlation between the weight of the thyroid gland, DNA volume and blood TSH level in rats]. NIHON NAIBUNPI GAKKAI ZASSHI 1974; 50:83. [PMID: 4476659] [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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382
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Suzuki M, Langer P, Kakegawa T, Ieiri S, Matsuzaki S. [Proceedings: Dualism in the pituitary control of thyroid hormones with special reference to the mechanism of suppression of TSH secretion]. NIHON NAIBUNPI GAKKAI ZASSHI 1974; 50:113. [PMID: 4476283] [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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383
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Matsuzaki S, Pochet R, Schell-Frederick E. A comparison of the subcellular distribution of 5'-nucleotidase, (Na+-K+)-ATPase and adenyl cyclase in beef thyroid gland. BIOCHIMICA ET BIOPHYSICA ACTA 1973; 313:329-37. [PMID: 4270211 DOI: 10.1016/0304-4165(73)90032-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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384
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Matsuzaki S. [Growth hormone (GH)]. HORUMON TO RINSHO. CLINICAL ENDOCRINOLOGY 1973; 21:129-35. [PMID: 4571206] [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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385
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Matsuzaki S, Dumont JE. Effect of calcium ion on horse parathyroid gland adenyl cyclase. BIOCHIMICA ET BIOPHYSICA ACTA 1972; 284:227-34. [PMID: 5073760 DOI: 10.1016/0005-2744(72)90061-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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386
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Matsuzaki S. [Effect of aging on biliary tract diseases]. NIHON SHOKAKIBYO GAKKAI ZASSHI = THE JAPANESE JOURNAL OF GASTRO-ENTEROLOGY 1972; 69:824-42. [PMID: 4674104] [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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387
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Shizume K, Irie M, Matsuzaki S, Sawano S. [Group discussion: on the 2d International Symposium on Growth Hormone]. HORUMON TO RINSHO. CLINICAL ENDOCRINOLOGY 1971; 19:971-87. [PMID: 4400627] [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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388
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Matsuzaki S. [Electron microscopic observations of the choroidal malignant melanoma--about the melanin synthesis in the melanocyte]. NIHON GANKA KIYO 1971; 22:500-7. [PMID: 5107238] [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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389
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Matsuzaki S. [A case of malignant melanoma of the choroid misdiagnosed for retinal detachment. The method of diagnosis, light and electron microscopic observation]. NIPPON GANKA GAKKAI ZASSHI 1971; 75:31-45. [PMID: 5101702] [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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390
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Matsuzaki S. Effects of graded doses of L-thyroxine on 14C-leucine incorporation into anterior pituitary proteins of thyroidectomized rats. ENDOCRINOLOGIA JAPONICA 1970; 17:379-85. [PMID: 5537370 DOI: 10.1507/endocrj1954.17.379] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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391
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Kawamura T, Shishiba Y, Tomori A, Kato N, Matsuzaki S. [Experience in the use of chlorpropamide in diabetes inspidus--combined therapy of chlorpropamide and chlorthiazide diuretics]. NAIKA. INTERNAL MEDICINE 1970; 25:753-6. [PMID: 5429549] [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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392
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Sato T, Matsuzaki S, Fujiwara Y, Tahashi J, Suguro T. [Case of multiple coloniciverticulosis]. NAIKA. INTERNAL MEDICINE 1970; 25:563-6. [PMID: 5444911] [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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393
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Kono N, Umetsu R, Matsuzaki S. [The relationship between exercise and fibrinolytic enzyme system. 3. Changes of urinary sediments in relation to blood clotting system influenced by exercise]. Nihon Hinyokika Gakkai Zasshi 1970; 61:193-205. [PMID: 5462394 DOI: 10.5980/jpnjurol1928.61.2_193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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394
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Horiuchi A, Matsuzaki S, Oshima T, Okayasu M, Hagihara T. [An autopsy case of acute leukemia associated with pulmonary manifestations, which changed several times on x-ray films]. NIHON NAIKA GAKKAI ZASSHI. THE JOURNAL OF THE JAPANESE SOCIETY OF INTERNAL MEDICINE 1970; 59:47-53. [PMID: 5462390 DOI: 10.2169/naika.59.47] [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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395
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Matsuzaki S. [Acromegaly]. HORUMON TO RINSHO. CLINICAL ENDOCRINOLOGY 1970; 18:83-9. [PMID: 5461283] [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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396
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Matsuzaki S. Effects of thyroidectomy and thyroxine supplement on the glucose metabolism in the rat anterior pituitary. ENDOCRINOLOGIA JAPONICA 1969; 16:507-15. [PMID: 5395931 DOI: 10.1507/endocrj1954.16.507] [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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397
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Matsuzaki S, Kakegawa T, Yamamoto K. Effect of cold exposure on amino acid transport and incorporation into rat anterior pituitary in vitro. ENDOCRINOLOGIA JAPONICA 1969; 16:403-7. [PMID: 4309710 DOI: 10.1507/endocrj1954.16.403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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398
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Matsuzaki S, Suzuki M, Matsuzawa T. Changes in lactate dehydrogenase isozyme patterns of rat anterior pituitary in varied thyroid states. ENDOCRINOLOGIA JAPONICA 1969; 16:301-8. [PMID: 5394336 DOI: 10.1507/endocrj1954.16.301] [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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399
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Kono N, Matsuzaki S. [Exercise and fibrinolytic enzyme system. II. The fibrinolytic activities of the fresh urine and the pH2-treated urine and the urokinase]. Nihon Hinyokika Gakkai Zasshi 1969; 60:529-40. [PMID: 5817249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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400
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Sambe K, Tsuchiya M, Asakura Y, Suzuki K, Matsuzaki S. [Problems in the lipid-digestion-absorption test by isotope-tagged substances]. NIHON RINSHO. JAPANESE JOURNAL OF CLINICAL MEDICINE 1969; 27:473-81. [PMID: 5814648] [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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