2526
|
Yanai A, Park S, Iwao T, Nakamura N. Reconstruction of a skin defect of the posterior heel by a lateral calcaneal flap. Plast Reconstr Surg 1985; 75:642-7. [PMID: 3983271 DOI: 10.1097/00006534-198505000-00003] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
2527
|
Cotter ML, Naldi R, Shaw C, Park S, Heavner GA. Detection and quantitation of low levels of protected and unprotected (R)-amino acids in the synthesis of thymopentin, an immunoregulatory peptide. J Pharm Sci 1985; 74:489-91. [PMID: 3889276 DOI: 10.1002/jps.2600740426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Two chiral chromatographic procedures (HPLC and capillary GC) were developed to monitor the extent of epimerization of protected and unprotected amino acids used in a synthesis of thymopentin, an immunoregulatory peptide currently in clinical trials. The capillary GC method allowed the detection of the (R)-enantiomer in the presence of the (S)-enantiomer at levels of greater than or equal to 0.2%, while the HPLC method allowed similar detection at levels of greater than or equal to 0.1%.
Collapse
|
2528
|
Ahmadi J, Miller CA, Segall HD, Park SH, Zee CS, Becker RL. CT patterns in histopathologically complex cavernous hemangiomas. AJNR Am J Neuroradiol 1985; 6:389-93. [PMID: 3923794 PMCID: PMC8335330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Computed tomographic (CT) studies were correlated with microscopic findings in 10 histologically verified cavernous hemangiomas in nine patients. In four of the 10 lesions, two or more distinct types of cerebrovascular malformations were identified histopathologically. These included arteriovenous malformations, venous malformations, and telangiectasis. Such coexistence of various types of cerebrovascular malformations has been reported rarely. In each of the four combined lesions, there was evidence of recent or old hemorrhage. The CT findings were nonspecific and were similar to those seen in a variety of intracranial pathologic conditions.
Collapse
|
2529
|
Park SH, Kiick DM, Harris BG, Cook PF. Kinetic mechanism in the direction of oxidative decarboxylation for NAD-malic enzyme from Ascaris suum. Biochemistry 1984; 23:5446-53. [PMID: 6509028 DOI: 10.1021/bi00318a011] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Measurement of the initial rate of the malic enzyme reaction varying the concentration of NAD at several different fixed levels of Mg2+ (0.25-1.0 mM) and a single malate concentration gave a pattern which intersects to the left of the ordinate. Repetition of this initial velocity pattern at several additional malate concentrations and treatment in terms of a terreactant mechanism suggests an ordered mechanism in which NAD adds prior to Mg2+ which must add prior to malate. On the other hand, when a broader concentration range of Mg2+ (0.25-50 mM) is used, data are consistent with a random mechanism in which Mg2+ must add prior to malate. By use of product inhibition studies, pyruvate is competitive vs. malate and noncompetitive vs. NAD, while NADH is competitive vs. NAD and noncompetitive vs. malate. These results are consistent with the random addition of substrates and further suggest rapid equilibrium random release of products. Tartronate, a dead-end analogue of malate, is competitive vs. malate and noncompetitive vs. NAD. Thio-NAD is a slow substrate which is used at 2.4% the maximum rate of NAD. When used as a dead-end analogue of NAD, thio-NAD is competitive vs. NAD and gives a complex inhibition pattern vs. malate in which competitive inhibition is apparent at low concentrations of malate (less than 12.5 mM), and this changes to uncompetitive inhibition at high concentrations of malate (greater than 12.5 mM). These data are consistent with a steady-state random mechanism in the direction of oxidative decarboxylation in which Mg2+ adds in rapid equilibrium prior to malate.(ABSTRACT TRUNCATED AT 250 WORDS)
Collapse
|
2530
|
Parker RH, Park S. Safety of cefotaxime and other new beta-lactam antibiotics. J Antimicrob Chemother 1984; 14 Suppl B:331-5. [PMID: 6094460 DOI: 10.1093/jac/14.suppl_b.331] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
beta-Lactam antimicrobial agents have until recently enjoyed a reputation of reliability and safety. Now serious problems have emerged associated with use of some of the newer drugs of this class. Latamoxef (moxalactam) and cefoperazone, both of which have a methyltetrazolethiol side chain, have been reported to cause coagulation abnormalities, clinical bleeding, and disulfiram-like reactions. In addition, an unusually high incidence of diarrhoea has been associated with administration of cefoperazone. Cefotaxime does not have the [methylthiotetrazole] side chain and has not caused bleeding, coagulopathy, or disulfiram-like reactions. Diarrhoea, usually mild, has been observed in only 1% of patients given cefotaxime in clinical trials. The remarkable safety record of cefotaxime is an important consideration for clinicians in the selection of an antimicrobial agent for seriously ill patients.
Collapse
|
2531
|
Zimmermann I, Park SH, Bugalho de Almeida AA, Ulmer WT. [Significance of plasma histamine level in airway obstruction]. PRAXIS UND KLINIK DER PNEUMOLOGIE 1983; 37 Suppl 1:732-9. [PMID: 6647323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
2532
|
Shen WW, Nakra R, Park S. Use of MAOIs. HOSPITAL & COMMUNITY PSYCHIATRY 1983; 34:854. [PMID: 6618468 DOI: 10.1176/ps.34.9.854] [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]
|
2533
|
Zimmermann I, Bugalho de Almeida AA, Ulmer WT, Park SH. Histamine release into tracheal lumen and bronchial reactivity. Effect of local allergen administration on histamine release and bronchial reactivity. RESEARCH IN EXPERIMENTAL MEDICINE. ZEITSCHRIFT FUR DIE GESAMTE EXPERIMENTELLE MEDIZIN EINSCHLIESSLICH EXPERIMENTELLER CHIRURGIE 1983; 182:153-66. [PMID: 6191374 DOI: 10.1007/bf01851121] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The influence of tracheal lavage with an allergen on the airway response to bronchial challenge with histamine, acetylcholine, and ascaris extract was investigated in 36 dogs. High histamine concentrations were measured in the tracheal solution after lavage with allergen. This amine, released on the mucosal surface, was observed in only very small concentrations in the circulation. Airway response to acetylcholine inhalation was significantly increased after tracheal lavage with allergen. This hyperreactivity of the lower airways induced by tracheal lavage with an allergen suggests that a reflex mechanism is involved. After histamine inhalation a significantly larger antigen-induced histamine release to tracheal lumen was observed. No influence on airway response was found after tracheal lavage with H2O.
Collapse
|
2534
|
Zimmermann I, Ulmer WT, Park SH. Histamine release into tracheal lumen and bronchial reactivity. The histamine liberation of proteolytic enzymes in the tracheal lumen in relation to the bronchomotoric reactivity. RESEARCH IN EXPERIMENTAL MEDICINE. ZEITSCHRIFT FUR DIE GESAMTE EXPERIMENTELLE MEDIZIN EINSCHLIESSLICH EXPERIMENTELLER CHIRURGIE 1983; 182:167-75. [PMID: 6191375 DOI: 10.1007/bf01851122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The influence of tracheal lavage in a restricted area, with a proteolytic enzyme (Pronase) on the bronchial response to challenge with ACH and AE was studied in 15 dogs. Histamine concentrations measured in the tracheal liquid after lavage with Pronase were smaller than the values after tracheal lavage with allergen. Airway response to ACH inhalation was significantly increased after tracheal lavage with Pronase. Effects of proteolytic enzymes and allergens on the tracheal wall are compared. Allergens and proteolytic enzymes evidence a different mode of action in increasing reactivity of peripheral airways.
Collapse
|
2535
|
Shen WW, Park S. The use of monoamine oxidase inhibitors in the treatment of traumatic war neurosis: case report. Mil Med 1983; 148:430-1. [PMID: 6408524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
|
2536
|
Zimmerman I, Ulmer WT, Park SH. Histamine release into tracheal lumen and bronchial reactivity. Effect of compound 48/80 administered by different routes in various doses on histamine release and bronchial reactivity. RESEARCH IN EXPERIMENTAL MEDICINE. ZEITSCHRIFT FUR DIE GESAMTE EXPERIMENTELLE MEDIZIN EINSCHLIESSLICH EXPERIMENTELLER CHIRURGIE 1983; 183:55-65. [PMID: 6195701 DOI: 10.1007/bf01851763] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The influence of tracheal lavage with compound 48/80 on the bronchial response to challenge with ACH and AE was studied in 24 animals. Furthermore, the effect of i.v. administration of 48/80 was compared to its administration into the tracheal lumen. No increased histamine liberation was detected in the tracheal fluid after lavage with 48/80, nor was an influence on the bronchial response observed. These observations were the same as those described for tracheal lavage with water. The same amounts of this secretagogue induced, after i.v. administration, a high histamine release which correlates significantly with blood pressure decrease.
Collapse
|
2537
|
Zimmerman I, Ulmer WT, Park SH. Histamine release into tracheal lumen and bronchial reactivity. Effect of local histamine administration on histamine release and bronchial reactivity. RESEARCH IN EXPERIMENTAL MEDICINE. ZEITSCHRIFT FUR DIE GESAMTE EXPERIMENTELLE MEDIZIN EINSCHLIESSLICH EXPERIMENTELLER CHIRURGIE 1983; 183:67-75. [PMID: 6195702 DOI: 10.1007/bf01851764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The influence of tracheal lavage with histamine, and of i.v. administration of histamine on bronchospastic response was studied in 16 dogs. Airway response to acetylcholine inhalation was significantly increased after tracheal lavage with high concentrated histamine solution (1%). No influence on airway response was found after (1) tracheal lavage with lower concentrations of histamine and (2) its i.v. administration. The clinical importance of these manifestations is discussed.
Collapse
|
2538
|
Shen WW, Park S. Thioridazine-induced inhibition of female orgasm. PSYCHIATRIC JOURNAL OF THE UNIVERSITY OF OTTAWA : REVUE DE PSYCHIATRIE DE L'UNIVERSITE D'OTTAWA 1982; 7:249-51. [PMID: 6761731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
2539
|
Zee CS, Segall HD, Miller C, Ahmadi J, McComb JG, Han JS, Park SH. Less common CT features of medulloblastoma. Radiology 1982; 144:97-102. [PMID: 6979760 DOI: 10.1148/radiology.144.1.6979760] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
2540
|
Sim JS, Yang IK, Byun JY, Park SH, Bahk YW. Post-lobectomy changes of plain chest x-ray findings: with an emphasis on differential diagnosis between upperand lower lobectomy. ACTA ACUST UNITED AC 1982. [DOI: 10.3348/jkrs.1982.18.4.710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
2541
|
Zimmermann I, Bugalho de Almeida AA, Park SH, Ulmer WT. [Histamine content of the sputa of patients with chronic obstructive bronchitis]. Respiration 1982; 43:194-207. [PMID: 7111866 DOI: 10.1159/000194485] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
The sputa of patients with chronic obstructive lung disease show high histamine concentrations with large individual variations. The fluorometric and the biologic method correlate statistically significantly. Histamine concentrations decrease significantly, during 60 min at 37 degrees C, by different amounts in different patients. The measured histamine concentration can cause bronchoconstriction. The histamine and the NaCl control solutions have been found to liberate histamine into the blood, measured as free plasma histamine. There are still many questions open which should be solved because the histamine concentration in the sputum could play an important role in chronic obstructive lung disease.
Collapse
|
2542
|
Sung JH, Mastri AR, Park SH. Axonal dystrophy in the gracile nucleus in children and young adults. Reappraisal of the incidence and associated diseases. J Neuropathol Exp Neurol 1981; 40:37-45. [PMID: 7205326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
In 656 patients aged from one to 39 years, the incidence of axonal dystrophy in the gracile nucleus (ADG) is correlated with underlying diseases. The age-related incidence of ADG (minimal to severe) in these patients, 13, 53, 76 and 97% in the first, second, third, and fourth decades, respectively, is comparable to that observed by other investigators. The incidence drops to 8, 16, 31, and 60% when more than five spheroids in each gracile nucleus are taken into account. Diseases with which ADG is frequently associated vary according to the patient's age. Congenital biliary atresia and cystic fibrosis account for 71% of cases of ADG (mild to severe) in the first decade, while cystic fibrosis and malignancies account for 38 and 35% in the second decade, respectively. In the third decade, malignancies, renal diseases, cystic fibrosis, and heart diseases account for 30, 14, 12, and 12% of ADG cases, respectively, while malignancies, renal diseases, heart diseases, and diseases of digestive organs account for 30, 24, 15, and 11% in the fourth decade, respectively. The incidence of ADG also increases progressively with age, duration of the clinical course in the individual disease, or both, regardless of types of the diseases. This fact, when viewed together with the precocious development of severe ADG in patients with the malabsorption syndromes and in those with grave illnesses with protracted course leading to cachexia, seems to indicate that malnutrition represents a common factor correlated with severe ADG in the young patients. It seems to be premature at this time to disregard the hypothetical question that ADG in man is in some way related to deficiency or altered metabolism of vitamin E.
Collapse
|
2543
|
Sung JH, Park SH, Mastri AR, Warwick WJ. Axonal dystrophy in the gracile nucleus in congenital biliary atresia and cystic fibrosis (mucoviscidosis): beneficial effect of vitamin E therapy. J Neuropathol Exp Neurol 1980; 39:584-97. [PMID: 7218000 DOI: 10.1097/00005072-198009000-00007] [Citation(s) in RCA: 61] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
In 63 patients with malabsorption syndromes, 16 with congenital biliary atresia (BA) and 47 with cystic fibrosis (CF), axonal dystrophy in the gracile nucleus (ADG) was studied. Of the 16 patients with BA, ADG of considerable severity was observed in all 10 over one year of age. Of the 47 patients with CF, it was observed in 32, 61 and 80% of the cases in the first, second, and third decades, respectively. Evidence is presented that there has been a substantial decrease in the incidence of ADG in CF patients in recent years and that the decreased incidence is attributable to vitamin E (Aquasol E) therapy. The beneficial effect of vitamin E supplementation in CF patients is proffered as strong evidence that ADG in BA and CF is related to vitamin E deficiency. The present study indicates that BA and CF patients require vitamin E supplementation to maintain a normal integrity of axons related to the gracile and perhaps other sensory nuclei. Critical neurological evaluation for possible dysfunction of the sensory nuclei in these patients with malabsorption syndromes is advised.
Collapse
|
2544
|
Kim P, Park SH, Deung YK, Choi IJ. Second attack of acute poststreptococcal glomerulonephritis; report of two cases. Yonsei Med J 1979; 20:61-8. [PMID: 524922 DOI: 10.3349/ymj.1979.20.1.61] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
|
2545
|
Park SH. Studies on flies in Korea. III. Taxonomic studies on muscid flies (Diptera, Muscidae). THE BULLETIN OF TOKYO MEDICAL AND DENTAL UNIVERSITY 1978; 25:17-43. [PMID: 272963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Forty species belonging to 14 genera of the family Muscidae were found so far in Korea. They are described in this paper and 5th sternites, forceps and male genitalia are illustrated. Eleven species recorded by Kobayashi (1918-1940) and 16 species by Hori (1952) were revised and redescribed in this paper. The key to the species of the muscid flies in Korea are also presented.
Collapse
|
2546
|
Friedman Y, Park S, Levasseur S, Burke G. Regulation of thyroid ornithine decarboxylase by the polyamines. Induction of a protein inhibitor of ornithine decarboxylase by the end-products of the reaction. BIOCHIMICA ET BIOPHYSICA ACTA 1977; 500:291-303. [PMID: 588593 DOI: 10.1016/0304-4165(77)90021-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
When spermidine, putrescine or 1,3-diaminopropane was injected (12.5 mumol/100 g body weight) into rats 1 h before thyrotropin, ornithine decarboxylase activity was increased by 75--150% over control levels. However, when greater than or equal to 75 mumol polyamine/100 g body weight was injected, thyrotropin-activated activity was inhibited by 70--95%. Multiple polyamine injections inhibited goitrogen-induced activity and gland weight increase by approx 35%. The polyamines also inhibited thyrotropin-activated rat thyroid ornithine decarboxylase in vitro in a dose-related fashion, with 50% inhibition occurring at 2--5 . 10(-4)M. The inhibition was not due to a direct effect on the enzyme. No stimulation was seen with low concentrations of polyamine. The polyamines had no effect on in vitro thyroid protein/RNA synthesis or glucose oxidation but had a biphasic effect on plasma membrane adenylate cyclase activity. A protein inhibitor to thyroid ornithine decarboxylase was generated in vivo by multiple injections of the polyamines into rats and in vitro by incubating bovine thyroid slices with 2--10 mM polyamine. The inhibitor was non-dialyzable, destroyed by boiling, and its formation was blocked in a dose-related fashion by cycloheximide. We conclude that: (1) thyroid ornithine decarboxylase is subject not only to positive control, but is also negatively regulated by its end-products, the polyamines, which induce a protein inhibitor to ornithine decarboxylase; (2) since gland growth is also inhibited under these conditions, the polyamine effect on thyroid ornithine decarboxylase may be biologically significant.
Collapse
|
2547
|
Park SH. Studies on flies in Korea II. Taxonomical studies on sarcophagid flies (Diptera). THE BULLETIN OF TOKYO MEDICAL AND DENTAL UNIVERSITY 1977; 24:249-84. [PMID: 271055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Thirty-eight species belonging to 15 genera of the family Sarcophagidae were found so far in Korea. The description, locality in Korea, distribution and bionomics of these species are given in this paper. The fifth sternite, forceps and genitalia of these male flies are illustrated. The key to the species of sarcophagid flies in Korea are also presented.
Collapse
|
2548
|
Friedhoff AJ, Park S, Schweitzer JW, Burdock EI, Armour M. Excretion of 3,4-dimethoxyphenethylamine (DMPEA) by acute schizophrenics and controls. Biol Psychiatry 1977; 12:643-54. [PMID: 588645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
2549
|
Park SH. Studies on flies in Korea I. Taxonomical studies on calliphorid flies (Diptera). THE BULLETIN OF TOKYO MEDICAL AND DENTAL UNIVERSITY 1977; 24:189-208. [PMID: 269026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A total of 97 species of flies collected in Korea since 1919 is described which consists of the collections by Kobayashi, Hori and the author. They include 19 species belonging to 12 genera of the family Calliphoridae, 38 species belonging to 15 genera of the family Sarcophagidae and 40 species belonging to 14 genera of the family Muscidae. The specimens were identified according to the male genitalia, which generally show little variations among the flies of the same species, and were illustrated. The geographical distribution and localities in Korea of all the species are presented, and the medically important species are discussed in detail. Of these flies, the calliphorid species in Korea are described and illustrated in this paper. The author found newly 8 species of calliphorid flies including a new species. As for the families Sarcophagidae and Muscidae, the descriptions on these will be published in part II and part III, respectively, in the near future.
Collapse
|
2550
|
Friedman Y, Park S, Levasseur S, Burke G. Activation of thyroid ornithine decarboxylase (ODC) in vitro by hypotonicity; a possible mechanism for ODC induction. Biochem Biophys Res Commun 1977; 77:57-64. [PMID: 196601 DOI: 10.1016/s0006-291x(77)80164-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|