351
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Oomagari K, Uchimura H, Matsumoto T, Yokoo H, Hirano M, Kim JS, Nakahara T. Serotonin and 5-hydroxyindoleacetic acid concentrations in individual hypothalamic nuclei and other brain areas of rat. EXPERIENTIA 1984; 40:1288-90. [PMID: 6209163 DOI: 10.1007/bf01946679] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Serotonin and 5-hydroxyindoleacetic acid (5-HIAA) were measured in individual nuclei of rat hypothalamus and other brain areas using HPLC with electrochemical detection. 5-HIAA levels were first demonstrated in hypothalamic and some discrete brain areas. The 5-HIAA/5-HT ratio was highest in the n. caudatus putamen, high in the n. ventromedialis and lowest in the n. suprachiasmaticus.
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352
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Uchimura H, Hirano M, Matsumoto T, Nakahara T, Itoh M, Oomagari K. [Distributions and functions of neurotransmitters and their related enzymes in individual brain nuclei]. TANPAKUSHITSU KAKUSAN KOSO. PROTEIN, NUCLEIC ACID, ENZYME 1984; 29:1353-63. [PMID: 6152064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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353
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Kondo H, Tsuruta M, Hayakawa Y, Nakahara T, Tsuda K, Miyata T, Yazaki T, Hida Y, Urisu A, Torii S. [Clinical studies on asthmatic children induced by Candida antigen]. ARERUGI = [ALLERGY] 1984; 33:381-388. [PMID: 6388530] [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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Matsutani T, Tamaru M, Hayakawa Y, Nagayoshi M, Nakahara T, Tsukada Y. A neurochemical study of developmental impairment of the brain caused by the administration of cytosine arabinoside during the fetal or neonatal period of rats. Neurochem Res 1983; 8:1295-306. [PMID: 6656988 DOI: 10.1007/bf00963999] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Injection of pregnant rats with cytosine arabinoside (ara-C) (280 mg/kg) on day 15 of gestation caused a significant rise (about two times the control value) in monoamine concentrations (norepinephrine, dopamine, and serotonin) accompanied by a decrease (about 60% of the control) in the brain weight and DNA content in the cerebrum of the offspring at 60 days of age. When neonatal rats were injected with ara-C (30 mg/kg/day) for four consecutive days from the fourth to seventh days after birth, a decrease of DNA content per cerebellum and an elevation of monoamine concentrations in the cerebellum were found. However, the total content of each monoamine per cerebrum or cerebellum showed no difference from the control. These results suggest that monoaminergic neurons may remain intact, with normal monoaminergic synapses compressed into a small brain volume. The neonatal administration of ara-C caused an elevation of 2',3'-cyclic nucleotide 3'-phosphodiesterase (CNPase) (EC 3.1.4.37) activity and myelin protein content in the cerebellum, suggesting a relative increase in myelin concentration as a result of hypoplasia of granule cells.
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355
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Inagaki M, Sakata S, Takata K, Nakahara T, Fukuda M. [Relation between postoperative serum GOT, GPT, and LDH activities and succinylcholine administered during anesthesia in children]. MASUI. THE JAPANESE JOURNAL OF ANESTHESIOLOGY 1983; 32:1075-1080. [PMID: 6663696] [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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356
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Matsumoto T, Uchimura H, Hirano M, Kim JS, Yokoo H, Shimomura M, Nakahara T, Inoue K, Oomagari K. Differential effects of acute and chronic administration of haloperidol on homovanillic acid levels in discrete dopaminergic areas of rat brain. Eur J Pharmacol 1983; 89:27-33. [PMID: 6861888 DOI: 10.1016/0014-2999(83)90604-0] [Citation(s) in RCA: 65] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
After acute administration of haloperidol, homovanillic acid (HVA) levels were increased in the prefrontal cortex, anterior cingulate cortex, discrete limbic areas and A14 dopamine (DA) neurons. The maximal effect of haloperidol was attained more slowly in the prefrontal cortex and amygdala than in the other regions. The ED50 of haloperidol was 0.03 mg/kg in the prefrontal cortex, but was 0.06-0.07 mg/kg in other areas examined. After repeated administration of haloperidol, tolerance to the HVA increase was observed in the striatum and all limbic areas examined, the amygdala being the most susceptible to this tolerance. In contrast, no tolerance was found in the anteromedial and suprarhinal DA neurons of the prefrontal cortex and A14 DA neurons. These results suggest that the prefrontal cortex may be a possible site for the antipsychotic action of haloperidol. On the other hand, no change of HVA levels in the A12 and A13 DA neurons of the hypothalamus was observed after haloperidol treatments, suggesting a lack of neuronal feedback mechanism in the A12 and A13 DA neurons.
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357
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Shirai S, Okinaga T, Tsuru H, Fukushima M, Sakai Y, Koganemaru M, Ohtake H, Nakahara T, Kohfuji K. [A case of amelanotic malignant melanoma]. RINSHO HOSHASEN. CLINICAL RADIOGRAPHY 1983; 28:507-10. [PMID: 6887599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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358
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Sato Y, Shoji H, Shinagawa K, Kaji M, Anraku S, Kida H, Nakahara T. [Motor neuron disease with presenile dementia: report of a case]. NIHON NAIKA GAKKAI ZASSHI. THE JOURNAL OF THE JAPANESE SOCIETY OF INTERNAL MEDICINE 1983; 72:315-9. [PMID: 6864053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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359
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Yokoo H, Nakahara T, Uchimura H, Matsumoto T, Hirano M. Effect of a TRH analog (DN-1417) on tyrosine hydroxylase activity in discrete areas of rat brain. Kurume Med J 1983; 30 Suppl:S37-43. [PMID: 6148453 DOI: 10.2739/kurumemedj.30.supplement_s37] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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360
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Nakahara T, Hirano M, Uchimura H, Saito M, Kim JS, Matsumoto T, Yokoo H, Shimomura M, Mukai A. Dopamine, serotonin and alpha-adrenergic receptor blocking activities in serum and their relationships to prolactin level in schizophrenic patients receiving long-term chlorpromazine treatment. Psychopharmacology (Berl) 1983; 79:266-70. [PMID: 6133307 DOI: 10.1007/bf00427825] [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: 01/18/2023]
Abstract
The clinical application of a dopamine radioreceptor assay for neuroleptics has been proposed. Simultaneous monitoring of serum antidopaminergic (anti-DA), antiserotonergic (anti-5HT) antiadrenergic (anti-NA) activities may provide a better understanding of clinical effects of neuroleptics. Serum anti-DA and anti-5HT activities were estimated by competition for 3H-spiperone binding to dopamine and serotonin receptors in rat brain, respectively, and anti-NA activity by competition for 3H-WB-4101 binding to alpha-receptors. Thirty-one patients receiving maintenance doses of chlorpromazine (CPZ) chronically were studied. Serum activities varied among patients receiving the same dose, but correlated significantly with dose. Anti-DA activity also correlated with both anti-5HT anti-NA activities, and the average ratio of anti-5HT or anti-NA to anti-DA activity was slightly reduced by metabolism of CPZ. However, some patients had a different spectrum of serum activities from that of in vitro activities. Serum prolactin (PRL) correlated weakly with all the serum activities. The serum PRL anti-DA activity ratio appeared to be independent of anti-5HT or anti-NA activity, suggesting the predominant involvement of anti-DA activity in the stimulation of PRL release.
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361
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Karube I, Nakahara T, Matsunaga T, Suzuki S. Salmonella electrode for screening mutagens. Anal Chem 1982; 54:1725-7. [PMID: 6756209 DOI: 10.1021/ac00248a015] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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362
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Matsumoto T, Uchimura H, Hirano M, Kim JS, Nakahara T, Tanaka K. Mass fragmentographic determination of homovanillic acid in individual dopaminergic neuron systems of rat brain: application of reaction gas chromatography. J Neurochem 1982; 38:285-8. [PMID: 7108532 DOI: 10.1111/j.1471-4159.1982.tb10884.x] [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: 01/23/2023]
Abstract
Homovanillic acid (HVA) levels of 12 discrete rat brain areas were determined by a mass fragmentographic method using the reaction gas chromatographic technique. The use of reaction gas chromatography increased the sensitivity for determination of HVA. The sensitivity of this method allows measurement of HVA in small amounts of brain tissue. The HVA levels in polar, medial, and lateral fields of prefrontal cortex, anterior cingulate cortex, septum, amygdala, A12, A13, and A14 dopaminergic neurons were 0.417 +/- 0.018 ng/mg protein, 0.689 +/- 0.004, 0.753 +/- 0.024, 0.496 +/- 0.029, 1.311 +/- 0.046, 0.555 +/- 0.008, 1.949 +/- 0.077, 1.109 +/- 0.112, and 0.489 +/- 0.019, respectively. The HVA levels in these areas are first reported in the present paper.
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363
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Karuhe I, Matsunaga T, Nakahara T, Suzuki S, Kada T. Preliminary screening of mutagens with a microbial sensor. Anal Chem 1981; 53:1024-6. [PMID: 6791519 DOI: 10.1021/ac00230a023] [Citation(s) in RCA: 39] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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364
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Kim JS, Uchimura H, Hirano M, Saito M, Matsumoto T, Nakahara T. Type B monoamine oxidase activities toward beta-phenylethylamine in discrete hypothalamic and circumventricular nuclei of the rat. Biochem Pharmacol 1981; 30:893-5. [PMID: 7247971 DOI: 10.1016/s0006-2952(81)80014-7] [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: 01/24/2023]
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365
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Kojima M, Kim JS, Uchimura H, Hirano M, Nakahara T, Matsumoto T. Effect of thyroidectomy on choline acetyltransferase in rat hypothalamic nuclei. Brain Res 1981; 209:227-30. [PMID: 6783265 DOI: 10.1016/0006-8993(81)91185-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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366
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Nakahara T, Kojima M, Uchimura H, Hirano M, Kim JS, Matsumoto T. Interaction of oxypertine with rat brain monoamine receptors. Biochem Pharmacol 1980; 29:2681-3. [PMID: 6107084 DOI: 10.1016/0006-2952(80)90086-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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367
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Kodama H, Kodama M, Nakahara T. A case on Lennox's syndrome of adolescent: type showing various kinds of psychiatric symptoms. FOLIA PSYCHIATRICA ET NEUROLOGICA JAPONICA 1980; 34:394. [PMID: 6783494 DOI: 10.1111/j.1440-1819.1980.tb01598.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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368
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Sakurai Y, Takahashi R, Nakahara T, Ikenaga H. Prediction of response to and actual outcome of chlorpromazine treatment in schizophrenic patients. ARCHIVES OF GENERAL PSYCHIATRY 1980; 37:1057-62. [PMID: 7416905 DOI: 10.1001/archpsyc.1980.01780220095011] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A blink controlled study evaluated the prediction of response to chlorpromazine treatment in 37 schizophrenics on the basis of actual outcomes. Prior to the initiation of treatment, blood samples were taken three hours after a dose of 50 mg of chlorpromazine for the analyses of the drug and its metabolites. The chlorpromazine therapy was then begun and continued for three months. The results agreed with our previous conclusion that patients who showed high levels of the metabolites after a single dose of chlorpromazine tended to have poor clinical improvement with chlorpromazine and that the responders showed the opposite pattern. The predictability of response to chlorpromazine therapy is significantly high in the patients with very low or high levels of the metabolites. However, this is useful at best in 46% of the subjects studied.
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369
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Onishi T, Ota N, Watanabe Y, Kokubo S, Nakahara T. [Influence of anesthesia and surgery on small airway--investigation with MEFV (author's transl)]. MASUI. THE JAPANESE JOURNAL OF ANESTHESIOLOGY 1980; 29:147-52. [PMID: 7365998] [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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370
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Nakahara T, Uchimura H, Hirano M, Saito M, Kim JS, Matsumoto T. Effects of gonadectomy and thyroidectomy on tyrosine hydroxylase in discrete areas of the rat median eminence. Brain Res 1979; 179:396-400. [PMID: 41618 DOI: 10.1016/0006-8993(79)90457-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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371
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Kim JS, Hirano M, Uchimura H, Saito M, Nakahara T, Itoh M. Effects of thyroidectomy on monoamine oxidase activities toward tyramine and serotonin in the circumventricular nuclei of the rat. EXPERIENTIA 1979; 35:302-3. [PMID: 446597 DOI: 10.1007/bf01964312] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Following thyroidectomy, monoamine oxidase (MAO) activities toward tyramine decreased significantly by 20% in the nucleus periventricularis and the nucleus arcuatus among the 3 hypothalamic nuclei of the rat, while MAO activity toward serotonin decreased significantly by 10% only in the nucleus periventricularis. It is suggested that thyroidectomy induced selective changes on the multiple forms of MAO in the discrete circumventricular nuclei.
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372
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Kim JS, Hirano M, Uchimura H, Saito M, Matsumoto T, Nakahara T. High proportions of type B monoamine oxidase in the discrete circumventricular regions of the rat. J Neurochem 1979; 32:253-6. [PMID: 759580 DOI: 10.1111/j.1471-4159.1979.tb04540.x] [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: 12/24/2022]
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373
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Nakahara T, Uchimura H, Saito M, Hirano M, Kim JS, Ito M. Inhibition of dopamine-sensitive adenylate cyclase in rat striatum by neuroleptic drugs administered in vivo. J Neurochem 1978; 31:1335-7. [PMID: 702178 DOI: 10.1111/j.1471-4159.1978.tb06260.x] [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: 12/24/2022]
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374
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Yamasaki M, Ideshita H, Nakahara T, Nakagawa K, Sone T, Segawa Y, Nomura S, Kodama H, Sarai K. CT scan and EEG findings in 10 epileptic patients. FOLIA PSYCHIATRICA ET NEUROLOGICA JAPONICA 1978; 32:395-6. [PMID: 748125 DOI: 10.1111/j.1440-1819.1978.tb02806.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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375
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Itoh M, Uchimura H, Hirano M, Saito M, Kim JS, Nakahara T. Glutamate decarboxylase activity in preoptic and hypothalamic nuclei of the rat. EXPERIENTIA 1978; 34:988-9. [PMID: 700050 DOI: 10.1007/bf01915303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Freeze-dried samples were used for the determination of glutamate decarboxylase activity in discrete preoptic and hypothalamic nuclei. The activity showed marked regional variation in distribution.
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376
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Sakurai Y, Nakahara T, Ikenaga H, Takahashi R. [Clinical significance of pattern of blood chlorpromazine and its metabolite levels and prediction of response to chlorpromazine treatment--studies on the rational pharmacotherapy in schizophrenics (author's transl)]. SEISHIN SHINKEIGAKU ZASSHI = PSYCHIATRIA ET NEUROLOGIA JAPONICA 1978; 80:405-24. [PMID: 724820] [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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377
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Hechter O, Terada S, Nakahara T, Flouret G. Neurohypophyseal hormone-responsive renal adenylate cyclase. II. Relationship between hormonal occupancy of neurohypophyseal hormone receptor sites and adenylate cyclase activation. J Biol Chem 1978; 253:3219-29. [PMID: 205544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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378
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Hechter O, Terada S, Spitsberg V, Nakahara T, Nakagawaga SH, Flouret G. Neurohypophyseal hormone-responsive renal adenylate cyclase. III. Relationship between affinity and intrinsic activity in neurohypophyseal hormones and structural analogs. J Biol Chem 1978; 253:3230-7. [PMID: 641066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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379
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Nakahara T, Terada S, Pincus J, Flouret G, Hechter O. Neurohypophyseal hormone-responsive renal adenylate cyclase. I. General characteristics of the neurohypophyseal hormone-sensitive adenylate cyclase in bovine renal medullary membranes prepared using a double phase polymer system. J Biol Chem 1978; 253:3211-8. [PMID: 641063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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380
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Hechter O, Terada S, Nakahara T, Flouret G. Neurohypophyseal hormone-responsive renal adenylate cyclase. II. Relationship between hormonal occupancy of neurohypophyseal hormone receptor sites and adenylate cyclase activation. J Biol Chem 1978. [DOI: 10.1016/s0021-9258(17)40826-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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381
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Nakahara T. [Physical examination and health education of infants and young children]. JOSANPU ZASSHI = THE JAPANESE JOURNAL FOR MIDWIFE 1978; 32:54-5. [PMID: 246049] [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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382
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Nakahara T. [Medical examination and health education of pregnant and puerperal patients]. JOSANPU ZASSHI = THE JAPANESE JOURNAL FOR MIDWIFE 1977; 31:792-3. [PMID: 244563] [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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383
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Nakahara T. [Public-supported care of premature infants]. JOSANPU ZASSHI = THE JAPANESE JOURNAL FOR MIDWIFE 1977; 31:729. [PMID: 244559] [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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384
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Nakahara T. [Government support given to handicapped children for their rehabilitation]. JOSANPU ZASSHI = THE JAPANESE JOURNAL FOR MIDWIFE 1977; 31:595. [PMID: 144811] [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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385
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Nakahara T. [Studies on treatment of chronic diseases in children]. JOSANPU ZASSHI = THE JAPANESE JOURNAL FOR MIDWIFE 1977; 31:517. [PMID: 243553] [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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386
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Saito M, Hirano M, Uchimura H, Nakahara T, Ito M. Tyrosine hydroxylase activity in the catecholamine nerve terminals and cell bodies of the rat brain. J Neurochem 1977; 29:161-5. [PMID: 18555 DOI: 10.1111/j.1471-4159.1977.tb03939.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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387
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Nakahara T. [Reporting of births of infants with low birth weights]. JOSANPU ZASSHI = THE JAPANESE JOURNAL FOR MIDWIFE 1977; 31:390. [PMID: 587753] [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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388
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Flouret G, Terada S, Yang F, Nakagawa SH, Nakahara T, Hechter O. Iodinated neurohypophyseal hormones as potential ligands for receptor binding and intermediates in synthesis of tritiated hormones. Biochemistry 1977; 16:2119-24. [PMID: 193553 DOI: 10.1021/bi00629a011] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
[3-Iodo-Tyr2]oxytocin (MIOT), [3,5-diiodo-Tyr2]oxytocin (DIOT), [3-iodo-Tyr2,Lys8]vasopressin (MILVP), [3,5-diiodo-Tyr2,Lys8]vasopressin (DILVP), [3-iodo-Tyr2,Arg8]vasopressin (MIAVP), and [3,5-diiodo-Tyr2,Arg8]vasopressin (DIAVP) were synthesized by iodination of the respective hormones, pruified, and characterized. All the monoiodo hormones had to be freshly prepared prior to bioassays, since on storage they gave rise to hormonal-like biological activity. The biological activities of these iodo analogues were measured in an adenylate cyclase assay employing neurohypophyseal hormone (NHH) sensitive bovine renal medullary membranes, and/or the rat oxytocic assay. In the cyclase assay, DIOT, DILVP, and DIAVP were inactive as agonists or antagonists. MIOT shows no agonistic activity in the renal cyclase system and uterus, but is a weak reversible inhibitor of oxytocin (OT) in both systems. When MIOT (10(-4) M) was preincubated with renal membranes for 10 min at 37 degrees C before addition of OT, it behaved as a noncompetitive inhibitor of NHH-stimulated adenylate cyclase. MILVP and MIAVP appear to be partial agonists with Km (half maximal response) 3 X 10(-6) and 3 X 10(-7) M, respectively, as determined in the cyclase assay. Upon preincubation with renal medullary membranes, MILVP (10(-6) M) behaves as a more potent noncompetitive inhibitor of OT than MIOT. Accordingly, iodo derivatives of NHH do not exhibit sufficient affinity to serve an specific ligands to measure OT, LVP, or AVP receptors in the uterus and kidney. Study of the specificity of inhibition produced by MIOT revealed that this analogue does not act selectively upon NHH receptors. Thus, MIOT modified adenylate cyclase systems which do not have NHH receptors, e.g., the PTH-sensitive adenylate cyclase in bovine renal cortex and the glucagon-sensitive adenylate cyclase in rat liver. DIOT, DILVP, and DIAVP were subjected to catalytic tritiation (employing carrier free tritium) and were converted to [3H]OT (25, 31, and 25 Ci/mmol), [3H]LVP (26 and 23 Ci/mmol), and [3H]AVP (17 Ci/mmol), respectively. These tritiated ligands have been successfully used to measure NHH receptor sites both in kidney and uterine membranes as described in other studies.
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389
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Nakahara T. [Registration of pregnant women]. JOSANPU ZASSHI = THE JAPANESE JOURNAL FOR MIDWIFE 1977; 31:325. [PMID: 587188] [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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390
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Nakahara T. [Perinatal mortality (2)]. JOSANPU ZASSHI = THE JAPANESE JOURNAL FOR MIDWIFE 1977; 31:255. [PMID: 586294] [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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391
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Nakahara T. [Maternal and child health statistics. Perinatal mortality (1)]. JOSANPU ZASSHI = THE JAPANESE JOURNAL FOR MIDWIFE 1977; 31:199. [PMID: 586285] [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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392
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Nakahara T, Erickson LE, Gutierrez JR. Characteristics of hydrocarbon uptake in cultures with two liquid phases. Biotechnol Bioeng 1977; 19:9-25. [PMID: 843616 DOI: 10.1002/bit.260190103] [Citation(s) in RCA: 65] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In hydrocarbon fermentation, the efficiency of hydrocarbon uptake by cells is one of the keys to the economical production of single-cell protein. This work is concerned with characterization of cultures with two liquid phases for understanding the hydrocarbon uptake process by cells. Batch cultivation of Candida lipolytica was carried out in shaking flasks and in a tower fermentor with motionless mixers. Microscopic observation and cell and hydrocarbon concentration distribution in batch cultivation showed that some cells are attached to the large oil drops and others are free from them. Interfacila tension between oil and water and Sauter mean drop size decreased as cultivation proceeded. On the basis of the experimental results, the process of hydrocarbon uptake by cells is discussed.
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393
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Nakahara T, Uchimura H, Hirano M, Saito M, Ito M. Effects of gonadectomy and thyroidectomy on the tyrosine hydroxylase activity in individual hypothalamic nuclei and lower brain stem catecholaminergic cell groups of the rat. Brain Res 1976; 117:351-6. [PMID: 11036 DOI: 10.1016/0006-8993(76)90746-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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394
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Itoh M, Uchimura H, Hirano M, Saito M, Nakahara T. Effects of reserpine and pargyline on glutamate decarboxylase activity in rat hypothalamic nuclei. Brain Res 1976; 115:529-34. [PMID: 1067888 DOI: 10.1016/0006-8993(76)90372-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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395
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Nakahara T. [Fetal death. (3)]. JOSANPU ZASSHI = THE JAPANESE JOURNAL FOR MIDWIFE 1976; 30:632. [PMID: 1051442] [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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396
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Nakahara T. [Fetal death (2)]. JOSANPU ZASSHI = THE JAPANESE JOURNAL FOR MIDWIFE 1976; 30:565. [PMID: 1049680] [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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397
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Furukawa T, Ono N, Maeda Y, Nakahara T, Yoshihara K. A possible mode of cardiovascular actions of dopamine in dogs. JAPANESE JOURNAL OF PHARMACOLOGY 1976; 26:481-92. [PMID: 1003704 DOI: 10.1254/jjp.26.481] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A possible mode of cardiovascular actions of dopamine was studied using ephedrine. In the dog pretreated with repeated administrations of ephedrine (total dose, 40 or 80 mg/kg, i.v.) or with combined administrations of ephedrine (total dose, 90 mg/kg, s.c. and i.v.) and reserpine (2 mg/kg, s.c., 24 hr previously), pressor responses to dopamine were eliminated and reversed to depressor responses whereas depressor responses to dopamine were potentiated. Positive chronotropic effects of dopamine were almost eliminated. Pressor and positive chronotropic effects of tyramine were almost abolished. Sympathomimetic effect of noradrenaline and adrenaline were potentiated while those of isoprenaline were inhibited. In the heart-lung preparation of ephedrine-treated dogs (total dose, 40 mg/kg, i.v.), cardiac stimulating effects of dopamine and tyramine were strongly depressed, and those of noradrenaline, adrenaline and isoprenaline were reduced to some extent. In the open-chest dogs, after pretreatment of cocaine (4 mg/kg, i.v.), pressor, positive inotropic and chronotropic effects of noradrenaline were potentiated, whilst those of tyramine were inhibited. Those of dopamine were not visibly altered, but depressor, negative chronotropic and inotropic effects of dopamine appeared at small doses. In the ephedrine-pretreated dogs, these sympathomimetic effects of dopamine and tyramine after cocaine were strongly depressed and those of noradrenaline were inhibited to a certain degree. The results obtained with ephedrine suggest that dopamine differs from other catecholamines and tyramine in the mode of cardiovascular actions.
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398
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Nakahara T. [Fetal death (1)]. JOSANPU ZASSHI = THE JAPANESE JOURNAL FOR MIDWIFE 1976; 30:509. [PMID: 1049672] [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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399
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Nakahara T. [Infant mortality. (3)]. JOSANPU ZASSHI = THE JAPANESE JOURNAL FOR MIDWIFE 1976; 30:443. [PMID: 1049263] [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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400
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Nakahara T. [Infant mortality]. JOSANPU ZASSHI = THE JAPANESE JOURNAL FOR MIDWIFE 1976; 30:315. [PMID: 1048213] [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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