1101
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Tang JT, Kim C, Stenzel R, Higgins LL. Temperal and spatial measurement of rf electric field in a magnetized plasma using an emissive probe. THE REVIEW OF SCIENTIFIC INSTRUMENTS 1979; 50:1458. [PMID: 18699410 DOI: 10.1063/1.1135739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
rf electric field in the ion cyclotron frequency range (10 kHz-1MHz) is measured directly in the plasma using an emissive probe operated in a novel manner.
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1102
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Brown BS, Payne T, Kim C, Moore G, Krebs P, Martin W. Chronic response of rat brain norepinephrine and serotonin levels to endurance training. JOURNAL OF APPLIED PHYSIOLOGY: RESPIRATORY, ENVIRONMENTAL AND EXERCISE PHYSIOLOGY 1979; 46:19-23. [PMID: 457523 DOI: 10.1152/jappl.1979.46.1.19] [Citation(s) in RCA: 97] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Norepinephrine (NE) and serotonin (5-HT) concentrations were determined in three areas of the rat brain following 8 wk exposure to differing physical activity and dietary regimens. Animals were divided into sedentary and exercise groups, and one-half of each received either a normal or atherogenic diet. The exercise consisted of 30 min of treadmill running, 5 days/wk, for 8 wk. Brains were weighed and sectioned into cerebral cortex, cerebellum, and remainder (midbrain), and fluorometrically analyzed for NE and 5-HT content. In most brain areas, NE and 5-HT levels were significantly greater among exercise-normal diet and exercise-fat diet compared to both sedentary groups. In the cerebral cortex, exercise-normal diet rats possessed higher levels of NE and lower concentrations of 5-HT than sedentary animals. The atherogenic diet did not affect amine levels other than 5-HT in the cortex among exercise rats. The NE results are consistent with prior research indicating its control of sympathetic function. Increased levels of 5-HT in the midbrain may be the neurotransmittal adaptation responsible for decreased appetite and enhanced weight loss following chronic endurance exercise.
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1103
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Van Loon GR, De Souza EB, Kim C. Alterations in brain dopamine and serotonin metabolism during the development of tolerance to human beta-endorphin in rats. Can J Physiol Pharmacol 1978; 56:1067-71. [PMID: 743624 DOI: 10.1139/y78-173] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Repeated intracisternal injections of human beta-endorphin lead to development of tolerance with respect to the catalepsy, analgesia, and hypothermia which are seen following a single injection. The initial injection of beta-endorphin results in increases in the dopamine metabolites, 3,4-dihydroxyphenylacetic acid (DOPAC) and homovanillic acid (HVA), in neostriatum, as well as increases in the serotonin metabolite, 5-hydroxyindoleacetic acid (5-HIAA), in hypothalamus and brainstem and a decrease in 5-HIAA in hippocampus. In the present study, we report changes in metabolism of dopamine and serotonin in specific brain areas during the development of tolerance to beta-endorphin. Thus, the development of tolerance to beta-endorphin with respect to catalepsy, analgesia, and hypothermia may be mediated by development of tolerance to the effects of beta-endorphin on brain dopamine and serotonin release.
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1104
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1105
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Van Loon GR, Kim C. Dopaminergic mediation of beta-endorphin-induced catalepsy. RESEARCH COMMUNICATIONS IN CHEMICAL PATHOLOGY AND PHARMACOLOGY 1978; 21:37-44. [PMID: 567367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Acute intracisternal administration of human beta-endorphin produced catalepsy and increased striatal concentrations of 3,4-dihydroxyphenylacetic acid (DOPA) and homovanillic acid (HVA). All of these effects were blocked by naloxone. Apomorphine, a dopamine receptor antagonist, also prevented beta-endorphin-induced catalepsy and the increase in striatal DOPAC and HVA. The combination of subcataleptic doses of haloperidol and beta-endorphin produced catalepsy and large increases in striatal DOPAC and HVA. These data provide evidence for a role for nigrostriatal dopamine neurons in beta-endorphin-induced catalepsy. The apparent increase in striatal dopamine turnover following beta-endorphin administration may be compensatory.
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1106
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Weinman LS, Kim C, Tucker TR, Metzbower EA. Characteristics of laser surface melted aluminum alloys. APPLIED OPTICS 1978; 17:906-910. [PMID: 20197897 DOI: 10.1364/ao.17.000906] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Specimens of Al-Fe 1-4 w/o, 2024 and 6061 Al have been surface melted with a pulsed Nd-glass laser. A TEM and SEM study showed that the dendrite spacings were from 2500 A to 4000 A which corresponds to a cooling rate of over 10(6) degrees C/sec. Melt depths obtained were in the range of 30-100 microm. No significant surface vaporization was observed at energy densities up to 440 J/cm(2). Fracture surfaces of the commerical alloys demonstrated elongated porosity in the melt areas, probably due to internal hydrogen.
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1107
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Van Loon GR, Sole MJ, Kamble A, Kim C, Green S. Differential responsiveness of central noradrenergic and dopaminergic neuron tyrosine hydroxylase to hypophysectomy, ACTH and glucocorticoid administration. Ann N Y Acad Sci 1977; 297:284-94. [PMID: 29550 DOI: 10.1111/j.1749-6632.1977.tb41861.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Hypophysectomy leads to a small increase in tyrosine hydroxylase activity of all brain areas containing noradrenergic neurons or tuberoinfundibular dopamine neurons, but nigroneostriatal dopamine neurons are not so affected. ACTH or corticosterone treatment inhibited this effect of hypophysectomy in some noradrenergic neurons and in tuberoinfundibular dopamine neurons. These data showing differential responsiveness of tyrosine hydroxylase in different brain areas are compatible with differences in regulation or molecular form of tyrosine hydroxylase in central noradrenergic and dopaminergic neurons. The disparity between increased hypothalamic tyrosine hydroxylase activity and decreased norepinephrine turnover following hypophysectomy may result from a change in the rate-limiting step to the hydroxylation of dopamine.
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1108
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Van Loon GR, Kim C. Effect of beta-endorphin on striatal dopamine metabolism. RESEARCH COMMUNICATIONS IN CHEMICAL PATHOLOGY AND PHARMACOLOGY 1977; 18:171-4. [PMID: 905630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Acute intraventricular administration of human beta-endorphin increased 3,4-dihydroxyphenylacetic acid (DOPAC) and homovanillic acid (HVA) concentrations in rat striatum at a time when the catatonic effect was also present. This effect of beta-endorphin is compatible with increased striatal dopamine turnover and is similar to the effect noted previously with morphine administration.
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1109
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Isaacks R, Harkness D, Sampsell R, Adler J, Roth S, Kim C, Goldman P. Studies on avian erythrocyte metabolism. Inositol tetrakisphosphate: the major phosphate compound in the erythrocytes of the ostrich (Struthio camelus camelus). EUROPEAN JOURNAL OF BIOCHEMISTRY 1977; 77:567-74. [PMID: 19258 DOI: 10.1111/j.1432-1033.1977.tb11700.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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1110
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Albert CA, Kwan A, Kim C, Shibuya J, Albert SN. A waste gas scavenging valve for pediatric systems. Anesth Analg 1977; 56:291-2. [PMID: 557930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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1111
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Brown B, Payne T, Kim C, Moire G, Krebs P, Martin W, Brown BS. CHRONIC RESPONSE OF RAT BRAIN NOREPINEPHRINE AND SEROTONIN LEVELS TO ENDURANCE TRAINING. Med Sci Sports Exerc 1977. [DOI: 10.1249/00005768-197721000-00016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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1112
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Raiti S, Maclaren N, Trias E, Kim C. Abnormalities in growth hormone and insulin release in short but otherwise normal patients. The arginine-insulin-glucose (AIGT) stimulation and suppression test. HORMONE RESEARCH 1977; 8:93-8. [PMID: 908554 DOI: 10.1159/000178785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Arginine-insulin stimulation and IV glucose suppression (AIGT) tests were used to evaluate release of insulin and growth hormone. Adult patients responded normally. Hypopituitary patients showed no hGH response. One third of short normal patients showed abnormal hGH responses to glucose suppression. Two thirds of the short normal patients showed poor insulin responses to either amino acid or glucose stimulation. Such patients might have abnormalities in release mechanisms for insulin and suppression mechanisms for hGH and this might contribute to their growth failure.
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1113
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Shibata T, Ikawa S, Kim C, Ando T. Site-specific deoxyribonucleases in Bacillus subtilis and other Bacillus strains. J Bacteriol 1976; 128:473-6. [PMID: 824277 PMCID: PMC232875 DOI: 10.1128/jb.128.1.473-476.1976] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
We systematically studied site-specific deoxyribonucleases in Bacillus strains and detected deoxyribonuclease activities in 20 of 62 strains tested.
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1114
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Kim C. Use of long chain alkylamines for preconcentration and determination of traces of molybdenum, tungsten and rhenium by atomic-absorption spectroscopy—III Tungsten in geological samples. Talanta 1976; 23:573-8. [DOI: 10.1016/0039-9140(76)80237-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/1975] [Accepted: 02/04/1976] [Indexed: 10/18/2022]
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1115
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Abstract
Hippocampectomized male rats were prepared, and the incidence as well as severity of gastric ulceration upon restraint were compared with those of normal control animals and controls with localized damage to the cortex over the hippocampus. In another experiment, observations on gastric ulceration were made without restraint in hippocampectomized animals, normal controls, controls with cortical damage, vagotomized animals and animals that received hippocampectomy as well as vagotomy. Both in restrained and unrestrained states, the incidence of animals with ulcer as well as the number and the total area of ulcers per stomach were significantly larger in the hippocampal animals than they were in the other animal groups. Vagotomy abolished the effect of hippocampectomy upon gastric ulceration in the unrestrained state. We infer that the hippocampus helps to protect the stomach from ulceration partly by controlling vagal activity.
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1116
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Kim C, Choi H, Kim CC, Kim JK, Kim MS. Influence of ginseng on mating behavior of male rats. THE AMERICAN JOURNAL OF CHINESE MEDICINE 1976; 4:163-8. [PMID: 937239 DOI: 10.1142/s0192415x76000202] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Experiment on the mating behavior of male albino rats paired with receptive females established that in comparison with control animals, males under the influence of ginseng (a) began ejaculation earlier and repeated the action more often in a 45-minute observation period and (b) deposited more copulation plugs in 10 days. The data suggest that ginseng facilitates the mating behavior of male rats.
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1117
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Kupchan SM, Kim C. Letter: Facile biomimetic synthesis of dibenzazonine and aporphine alkaloids. J Am Chem Soc 1975; 97:5623-5. [PMID: 1159240 DOI: 10.1021/ja00852a073] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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1118
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Kim C. The use of long-chain alkylamines for preconcentration of traces of molybdenum, tungsten and rhenium in their determination by atomic-absorption spectroscopy—I General studies. Talanta 1975; 22:739-44. [DOI: 10.1016/0039-9140(75)80216-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/1974] [Accepted: 01/22/1975] [Indexed: 10/18/2022]
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1119
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Kim C, Fjeldborg OC. An easy and safe technique for nephrostomy. SURGERY, GYNECOLOGY & OBSTETRICS 1975; 141:95-6. [PMID: 1154223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
By an atraumatic technique of nephrostomy, dysfuncti-n of the nephrostomy due to hemorrhage during the early postoperative period can be prevented. The nephrostomy can be changed at any time without difficulty by the use of this technique.
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1120
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Kim C, Choi H, Kim CC, Kim JK, Kim MS, Park HJ, Ahn BT. Effect of hippocampectomy on sleep patterns in cats. ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY 1975; 38:235-43. [PMID: 46801 DOI: 10.1016/0013-4694(75)90244-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The study was planned to see if the hippocampus has an influence on fast wave sleep (FWS) as well as on slow wave sleep (SWS). From 8 male cats EEG, EMG and EOG were recorded for 24 h, first under normal conditions, secondly after cortical damage to the dorsal marginal portion of posterior ectosylvian gyrus, and thirdly following hippocampectomy done through the cortical damage. From the records, SWS, FWS and the sleep state (defined as a sequence of SWS or SWS-FWS phases between two successive waking states) were measured in terms of their occurrence, the mean duration and the total time they occupied in the day, night and 24 h. In addition, sleep sequences were classified according to the number of constituent sleep phases. Cortical damage did not affect SWS, FWS, or sleep state with regard to their occurrence, the mean duration, and the total time they occupied in 24 h. Nor did it affect the proportion of short and long sequences. The circadian variation of sleep was clearly retained. Hippocampectomy significantly reduced the total time occupied by sleep state, SWS and FWS, increased the occurrence of sleep state and SWS phase against decreased incidence of FWS phase, and reduced the mean duration of sleep state and SWS phase. Hippocampectomy also significantly increased the occurrence of sleep sequences with only one SWS phase at the cost of sequences with alternating SWS and FWS phases. Following hippocampectomy, the circadian variation of sleep was not only retained, but actually exagerated. The hippocampus in inferred to facilitate the FWS as well as the SWS phase of sleep.
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1121
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Twersky J, Himmelfarb E, Kim C. Post traumatic bronchopleural fistula: a complication of long-standing extrapleural oleothorax. Br J Radiol 1972; 45:693-4. [PMID: 5071200 DOI: 10.1259/0007-1285-45-537-693] [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: 01/13/2023] Open
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1122
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1123
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Kim C, Kim CC, Kim JK, Kim MS, Chang HK, Kim JY, Lee IG. Fear response and aggressive behavior of hippocampectomized house rats. Brain Res 1971; 29:237-51. [PMID: 5165591 DOI: 10.1016/0006-8993(71)90031-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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1124
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Kim C, Choi H, Kim JK, Chang HK, Park RS, Kang IY. General behavioral activity and its component patterns in hippocampectomized rats. Brain Res 1970; 19:379-94. [PMID: 5444319 DOI: 10.1016/0006-8993(70)90381-1] [Citation(s) in RCA: 50] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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1125
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Kim C, Kim CC, Kim MS, Hu CY, Rhe JS. Influence of ginseng on the stress mechanism. LLOYDIA 1970; 33:43-8. [PMID: 5520304] [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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