• Title/Summary/Keyword: University Archives

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Alternative Treatment of Osteoma Using an Endoscopic Holmium-YAG Laser

  • Han, Ba Leun;Shin, Ho Seong
    • Archives of Plastic Surgery
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    • v.39 no.4
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    • pp.422-425
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    • 2012
  • Osteoma is one of the most common tumors of the cranial vault and the facial skeleton. For osteoma in the facial region, endoscopic resection is widely used to prevent surgical scarring. Tumors in a total of 14 patients were resected using an endoscopic holmium-doped yttrium aluminium garnet (Ho:YAG) laser with a long flexible fiber. Aside from having the advantage of not leaving a scar due to the use of endoscopy, this procedure allowed resection at any position, was minimally invasive, and caused less postoperative pain. This method yielded excellent cosmetic results, so the endoscopic Ho:YAG laser is expected to emerge as a good treatment option for osteoma.

A Patient with Multiple Unfavorable Reconstruction Options: What Is the Best Choice?

  • Park, Hyun June;Son, Kyung Min;Choi, Woo Young;Cheon, Ji Seon
    • Archives of Reconstructive Microsurgery
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    • v.25 no.2
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    • pp.75-78
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    • 2016
  • The method of lower limb reconstruction surgery is selected based on a patient's underlying conditions, general conditions, and wound status, and it usually varies from direct closure to skin graft and flap coverage. Herein, we describe a patient with Duchenne muscular dystrophy who developed critical limb ischemia after femoral cannulation for extracorporeal membrane oxygenation was used during knee disarticulation, which was followed by reconstruction of the defect around the knee using a pedicled anterolateral thigh flap and skin graft.

Preparation of Substained-Release Microspheres of Phenylpropanolamine HCI and Their Release Characteristics

  • Kim, Chong-Kook;Lee, Kyung-Mi;Hwang, Sung-Joo;Yoon, Yong-Sang
    • Archives of Pharmacal Research
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    • v.13 no.4
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    • pp.293-297
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    • 1990
  • Sustained release microspheres containing phenylpropanolamine HCI (PPA) were prepared with acrylic polymer (Eudragit RL/RS) sand hydroxypropylmethylcellulose phthalate (HPMCP) using a emulsion-solvent evaporation method. Magnesium strate was used a smoothing agent for preparation of microspheres. The microspheres obtained were very spherical and free-flowing particles. Scanning electron microscopy showed that microspheres have a smooth surface and a sponage-like internal structure. The dissolution rate of PPA from the microspheres was dependent on the pH of dissolution media. PPA showed faster relase in hP 1. 2 solution than in pH 7.4 solution due to the solubility of PPA. Therefore we prepared new microspheres containing 5% (w/v) HPMCP in order to control the release of PPA. The release rate of PPA from these new microspheres was similar in pH 1.2 and pH 7.4 solution.

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Effect of Drug Substances on the Microviscosity of Lipid Bilayer of Liposomal Membrane

  • Han, Suk-Kyu;Kim, Jin-Suk;Lee, Yong-Soo;Kim, Min
    • Archives of Pharmacal Research
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    • v.13 no.2
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    • pp.192-197
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    • 1990
  • The microviscosites of the lipid bilayers of liposomal membranes of phospholipids were measured by the intermolecular excimer, formation method employing pyrene as a fluorescence probe, and the effects of n-alkanols and other local anesthetics on the microviscosity were investigated. The results showed that the n-alkanols and the ohter local anesthetics effectively lowered the microviscosity of the lipid bilayer of the dipalmitoyl phosphatidycholine liposomal membrane in proportion to the concentration of the additives. Moreover, there was a fairly good correlation between the ocal anesthetic activities and the microviscosity-lowering activities of these drugs. This results suggests that the nerve blocking activity of local anesthetics might have some relation with their activity fluidizing the lipid bilayer of biomembrane.

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Synthesis of Imidazole Derivatives Containing Biologically Active Units

  • Abdel-Ghani-Ali-Elagamey;Abdel-Fattah-Ali-Harb;Khodeir, Mohamed-Nabil;Salah-Zaki-Ahmed-Sowellim
    • Archives of Pharmacal Research
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    • v.10 no.3
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    • pp.153-157
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    • 1987
  • Reaction of oxazolin-5-ones 1 with p-amino-diphenylamine was resulted in the formation of the corresponding imidazoline-5-ones 2 which on treatment with sulphur afforded phenothizaines 3. Acridine derivatives 5 were obtained from acetylaminodiphenyl amines derivatives 6 on heating with AnCl$_2$ at $200^{\circ}C.$3 reacted with chloroacetyl chloride to give 7 which reacted in turn with different amines to give 8. Antibacterial activity of the obtained products was studied.

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Effect of Panax ginseng on the Development of Morphine Induced Tolerance and Dependence (VI). On the oral administration of ginseng ether fraction and saponins

  • Kim, Hack-Seang;Oh, Ki-Wan;Park, Woo-Kyu;Choi, Jae-Won;Bae, Dae-Sik
    • Archives of Pharmacal Research
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    • v.10 no.3
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    • pp.188-192
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    • 1987
  • The present study was undertaken to determine the inhibitory effects of orally administered ginseng saponins (GS), protopanaxadiol saponins (PD), protopanaxatriol saponins (PT) and ginseng ether fraction (GE) on the development of morphine induced tolerance and physical dependence in mice and also to determine the hepatic glutathione contents. GS, PD and PT inhibited significantly the development of morphine induced tolerance and physical dependence, but GE was effective only on the inhibition of the development of morphine induced physical dependence. GS, PD, PT and GE also inhibited the hepatic glutathione level decrease induced by morphine multiple injections.

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Determination of Sulfur-containing Drugs by Gas Chromatography with Flame Photometric Detector

  • Kim, Kyoung-Ho;Cho, Yung-Hyun;Park, Man-Ki;Lee, Wang-Kyu
    • Archives of Pharmacal Research
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    • v.6 no.2
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    • pp.103-108
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    • 1983
  • Such sulfur-containing drugs as chlorpromazine, sulfonamides and thiazides were determined by gas chromatography with flame photometric detector (FPD) and flame ionization detector (FID). 0.6% QF-1 or 3% SE-30 on Chromosorb WAWDMCS were found suitable for drugs listed above. In the experimental conditions given maximum response the FPD response and the response ratio of FPD increased with the number of sulfur atom per molecule. It was possible to obtain a linear calibration curve from $10^{-9}$ / mole to $2{\times}10^{-8}$ / mole and to analyze variety of sulfur drugs by the calibration curve of one sulfur standard.

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Synthesis and Characterization of HPMC Derivatives as Novel Duodenum-Specific Coating Agents

  • Huang Yuan;Zheng ling Ii;Liu Jun;Zhang Zhi rong
    • Archives of Pharmacal Research
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    • v.28 no.3
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    • pp.364-369
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    • 2005
  • HPMC (Hydroxypropyl methylcellulose) was chemically modified, using maleic anhydrides, to obtain pH-sensitive HPMCAM (Hydroxypropyl methylcellulose acetate maleate) polymers for use as novel duodenum-specific coating agents. The pharmaceutical properties of HPMCAM, such as film forming, acid values, pH-sensitive values, water vapor permeability, tensile strength and Tg, were investigated, and found to show good film forming properties. The pH­sensitive values were 3.0 to 3.7. In vitro results demonstrate that HPMCAM could completely suppress drug release within 2h in a simulated gastric fluid (pH 1.2) and rapidly release the drug in a simulated pathological duodenal fluid (pH 3.4). These results indicate that HPMCAM might be a useful material for a duodenum-specific drug delivery system.

2- or 6-(1-Azidoalkyl)-5,8-Dimethoxy-1,4-Napyhthoquinone: Synthesis, Evaluation of Cytotoxic Activity, Antitumor Activity and Inhibitory Effect on DNA Topoisomerase-I

  • Chae, Gyu-Han;Song, Gyu-Yong;Kim, Yong;Cho, Hoon;Sok, Dai-Eun;Ahn, Byung-Zun
    • Archives of Pharmacal Research
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    • v.22 no.5
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    • pp.507-514
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    • 1999
  • 6-(1-azidoalkyl)-DMNQ derivatives compared to 2-(1-azidoalkyl)-DMNQ isomers, exhibited higher cytotoxic activity against L1210 mouse leukemia cells and stronger inhibition of DNA topoisomerase-I (TOPO-I), suggesting involvement of steric hindrance. However, similar antitumor activity against mice bearing S-180 cell was shown by 2-an 6-(1-azidoalkyl)-DMNQ derivatives.

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Anti-hepatotoxic Activity of Icariside II, a Constituent of Epimedium koreanum

  • Cho, Nam-Jin;Sung, Sang-Hyun;Lee, Heum-Sook;Jeon, Mee-Hee;Kim, Young-Choong
    • Archives of Pharmacal Research
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    • v.18 no.4
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    • pp.289-292
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    • 1995
  • Icariside II, a flavonol glycoside, was isolated from the aerial part of Epimedium Koreanum Nakai by the anti-hepatotoxic acitivity guided fractionation technique employing $CCl_4-in-toxicated$ primary cultured rat hepatocytes as an assay system. Its anti-hepatotoxic activity was evaluated by measuring activity of glutamic pyruvic transaminase released from the $CCl_4-in-toxicated$ primary cultured rat hapatocytes. Icariside II significantly reduced the activity of glutamic pyruvic transaminase released from the $CCl_4-in-toxicated$ primary cultured rat hepatocytes and resulted in 78% recovery of the toxicity at the concentration of $200{\;}\mu\textrm{m}$. The anti-hepatotoxic activity of icariside II on the $CCl_4-in-toxicated$ primary cultured rat hepatocytes was as potent as that of silybin.

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