장시간 수술시 Propofol과 Enflurane의 마취 유지 효과 및 술후 각성도에 대한 비교

김태요,윤재승,이강창,정영표,안선연 圓光大學校 1995 論文集 Vol.30 No.2

There has not been particular attention focused on the comparative benefits and risks of propofol anesthesia with inhalation anesthesia in the operations of long duration. This study was assessed the anesthetic efficacy and the speed of recovery from propofol or enflurane anesthesia in patients undergoing the long term operations. The propofol group (n=25) receiver 2.0 - 2.5mg/kg propofol intravenously for the induction of anesthesia and followed by propofol infusion(6 - 12mg/kg/h). The enflurane group (n=25) was induced as the propofol group and followed by enflurane(1-2 MAC) addministration. All patients received nitrous oxide (50%) in oxygen immediately after tracheal intubation. All anesthetic agents were stopped at the time of last stitch. The hemodynamic changes were recorded and the recovery was assessed with the time from discontinuation of all anesthetics to extubation and the indices of consciousness at early recovery(recall name, eye opening on command, raise hand on request and coughing on request). The recovery tests showed no differences between the groups. Systolic pressure after intubation in propofol group was significantly increased (p<0.05), compared with enflurane group. In propofol group, seven patients received fentanyl because of light anesthetic depth. The frequency of nausea and vomiting was similar between the groups. In conclusion, the long propofol anesthesia was not associated with faster recovery than enflurane anesthesia and propofol as an agent of anesthetic maintenance was unfavorable.

Oxymetazoline 의 家兎 心博 減少作用에 관한 硏究

金泰堯 圓光大學校 醫科學硏究所 1987 圓光醫科學 Vol.3 No.2

1. Oxymetazoline, which has been shown to act preferentially on α_2-adernoceptors in some peripheral tissues and to act on α_1-adrenoceptors of the vascular smooth muscle and brain of the rabbit to induce a hypertensive effect, produced a bradycardiac effect in rabbits with the blockade of muscarinic receptors of the auricle by methylscopolamine pretreatment. It was attempted in this study to clarify the mechanism of this bradycardia. 2. The bradycardiac effect produced by either intravenous or intraventricular administration persisted until after the hypertension subsided. 3. The bradycardia of i.v. oxyrnetazoline was markedly inhibited by the treatment of rabbits with either guanethidine, chlorisondamine or propranolol. It was hardly seen in reserpine-pretreated rabbits and cord-sectioned ones. 4. Both the hypertension and bradycardia of i.v. oxymetazoline were inhibited by i.v. prazosin. 5. Yohimbine (i.v.) did not affect the hypertension of i.v. oxyrnetazoline, but weakened the bradycardiac effect, although not significant. 6. The hypertensive effect of i. vt. oxyrnetazoline was reduced by i. vt. prazosin, but the bradycardia was not affected. 7. Yohimbine (i.vt.) did not affect the hypertension of i.vt. oxyrnetazoline, but markedly reduced the bradycardiac effect. 8. The bradycardia of i.vt. oxymetazoline was not seen in reserpine-pretreated rabbits and rabbits treated with both guanethidine and chlorisonda-mine. 9. It is inferred that oxymetazoline induces the bradycardiac effect by acting on the α_2-adrenoceptors in the rabbit-heart and brain.

Esmolo과 lidocaine의 혼합사용시 기관내 삽관에 따른 혈압과 심박수에 미치는 영향

하정량,손용,김태요,윤재승,송윤강 圓光大學校 醫科學硏究所 1999 圓光醫科學 Vol.15 No.1

Background: Ultrashort acting β-adrenergic antagonist, esmolol and local anesthetics, lidocaine are well known about effects of hemodynamic stabilization to tracheal intubation. But, the effects of these drugs are still controversial. The aim of the present study is to assess whether a combination of both drugs are more effective than either drug alone. Methods: Forty eight patients, ASA physical status Ⅰ or Ⅱ, were randomly assigned to one of four groups (n=12 each): control (Group S), esmolol 1 ㎎/㎏ (Group E), lidocaine 1 ㎎/㎏ (Group L) and esmolol-lidocaine combination (Group M). Anesthesia was induced with thiopental 5 ㎎/㎏ intravenously, and then saline, esmolol, lidocaine and combination drug were administered as an intravenous bolus, and immediately followed by succinylcholine 1.5 ㎎/㎏. Tracheal intubation was done 90 seconds after intravenous injection of drugs, respectively. Systolic and diastolic blood pressure and heart rate were measured before induction and every minute for 5 minutes after tracheal intubation. Results: There was a significant attenuation in systolic, diastolic arterial pressure and heart rates after tracheal intubation in esmolol-lidocaine group compared to other three groups. Conclusions: Combination of esmolol 1 ㎎/㎏ with lidocaine 1 ㎎/㎏ seems to be useful for attenuation of the increases in blood pressure and heart rates compare to either drug alone after tracheal intubation.

저용량 Droperodol 의 지속적 정맥내 주사가 방사선 치료로 유발된 구토에 대한 효과 : As a Substitution for Granisetron for the Treatment of Gastrointestinal Symptoms from Palliative Radiation Therapy

문성록,박수경,정영표,김태요,최유선 圓光大學校 醫科學硏究所 1998 圓光醫科學 Vol.14 No.2

Background: Radiation therapy in palliative cancer management leads mainly to nausea, vomiting, dyspepsia and anorexia. Several agents have been used to treat above symptoms and sings. We assessed the usefulness of continuous intravenous infusion of low-dose droperidol, compared to granisetron for the control of gastrointestinal symptoms due to radiation therapy. Method: We devided 30 patients who developed gastrointestinal symptoms after undergoing palliative radiation therapy due to metastatic bone pain in two groups. In group G(n=15), the patients were injected granisetron(3㎎) and then injected it, 3㎎ per day. In group D(n=15), the patients were injected low-dose droperidol(0.25㎎) and then infused continuously at low-dose(1㎎/day) by the disposable continuous infusion pump. Result: There were no significant differences in the patient's satisfaction, improvement of appetite and incidences of side effects between two groups. Conclusion: The continuous intravenous infusion of low-dose droperidol can substitute for serotonin-receptor antagonist for the treatment of gastrointestinal symptoms during radiation therapy for cancer patients.

몰핀이 신경아세포종 SH-SY5Y 세포에서 Peroxynitrite에 의한 세포고사를 막는 것은 아편양 수용체나 Phosphatidylinositol-3 kinase (PI-3 kinase) 경로의 활성화에 의한 것이 아니다

정영표,이동렬,손용,김태요,윤재승,송윤강,김명선,박래길 圓光大學校 醫科學硏究所 1999 圓光醫科學 Vol.15 No.2

Background: The effect of opioids on nitric oxide (NO)- and peroxynitrite-induced neuronal cell death is largely unknown. In the present study, we examined the effect of morphine on NO- and peroxynitrite-induced cell death using a human neuroblastoma SH-SY5Y cell line, which abundantly expresses μ, δ, k-opioid receptors. Methods: The cultured cells were pretreated with morphine and exposed to 3-morpholinosydnonimine (SIN-1) that simultaneously generates NO and superoxide, thus possibly forming peroxynitrite. The cell damage was assessed by using MTT assay ana crystal violet staining. Exposure of the cells to SIN-1 for 24 hours induced apoptotic cell death, as evaluated by the occurrence of morphological nuclear changes characteristics of apoptosis using 4', 6-diamidino-2-phenylindole (DAPI) and measurement of pro-apoptotic protease, caspase-3, activity. Results: Pretreatment of SH-SY5Y with morphine, significantly inhibited the apoptotic cell death in a dose-dependent manner. Morphine also inhibited SIN-1-induced proapoptotic protease, caspase-3, activity in a dose-dependent manner. However, naloxone (20 μM) hardly antagonized the effect of morphine in SIN-1-induced cell death. The selective ligands for opioid receptor subtypes, [D-Ala^2, N-Me-Phe^4, Gly-ol^5]enkephalin (DAMGO, μ-opioid receptor agonist), [D-Pen^2.5]enkephalin (DPDPE, δ-opioid receptor agonist) and U-69593 (k-opioid receptor agonist) at the concentration of 10 μM did not prevent the cell death induced by SIN-1. PI3-kinase inhibitors, Wortmannin and LY294002, did not inhibit the action of morphine on apoptotic cell death. The neuroblastoma cells treated with morphine significantly elevated glutathione levels (GSH). Conclusions: The present study showed that morphine protected human neuroblastoma cell line, SH-SY45Y, from the peroxynitrite-induced apoptotic cell death through elevated GSH levels. However, it is suggested that the elevation of GSH by morphine is not via the activation of opioid receptors and/or PI3-kinase pathway but via other unknown mechanism.

Extraction and Liposomal Capsulation of Astaxanthin from Krill using Supercritical CO2

Tai Hyoung KIM,Sang Yo BYUN 한국생물공학회 2009 한국생물공학회 학술대회 Vol.2009 No.4

An evaluation of the RNase H inhibitory effects of Vietnamese medicinal plant extracts and natural compounds

Tai, Bui Huu,Nhut, Nguyen Duy,Nhiem, Nguyen Xuan,Quang, Tran Hong,Thanh Ngan, Nguyen Thi,Thuy Luyen, Bui Thi,Huong, Tran Thu,Wilson, Jennifer,Beutler, John A.,Ban, Ninh Khac,Cuong, Nguyen Manh,Kim, Yo Informa Healthcare 2011 PHARMACEUTICAL BIOLOGY Vol.49 No.10

<P><I>Context</I>: Acquired immune deficiency syndrome (AIDS) is a severe pandemic disease especially prevalent in poor and developing countries. Thus, developing specific, potent antiviral drugs that restrain infection by human immunodeficiency virus type 1 (HIV-1), a major cause of AIDS, remains an urgent priority.</P><P><I>Objective</I>: This study evaluated 32 extracts and 23 compounds from Vietnamese medicinal plants for their inhibitory effects against HIV-1 ribonuclease H (RNase H) and their role in reversing the cytopathic effects of HIV.</P><P><I>Materials and methods</I>: The plants were air-dried and extracted in different solvent systems to produce plant extracts. Natural compounds were obtained as previously published. Samples were screened for RNase H inhibition followed by a cytopathic assay. Data were analyzed using the Microsoft Excel.</P><P><I>Results and discussion</I>: At 50 μg/mL, 11 plant extracts and five compounds inhibited over 90% of RNase H enzymatic activity. Methanol extracts from <I>Phyllanthus reticulatus</I> and <I>Aglaia aphanamixis</I> leaves inhibited RNase H activity by 99 and 98%, respectively, whereas four extracts showed modest protection against the cytopathic effects of HIV.</P><P><I>Conclusion</I>: The screening results demonstrated that the butanol (BuOH) extract of <I>Celastrus orbiculata</I> leaves, methanol (MeOH) extracts of <I>Glycosmis stenocarpa</I> stems, <I>Eurya ciliata</I> leaves, and especially <I>P. reticulatus</I> leaves showed potential RNase H inhibition and protection against the viral cytopathic effects of HIV-1. Further chemical investigations should be carried out to find the active components of these extracts and compounds as potential anti-HIV drug candidates.</P>

유자첨가사료가 넙치의 질병저항성에 미치는 영향

정요한 ( Yo Han Jung ),김도형 ( Do Hyung Kim ),김흥윤 ( Heung Yun Kim ),신태선 ( Tai Sun Shin ),오명주 ( Myung Joo Oh ),이정호 ( Jung Ho Lee ),김종현 ( Jong Hyun Kim ),임수연 ( Su Yeon Im ),김은희 ( Eun Heui Kim ) 한국어병학회 2010 한국어병학회지 Vol.23 No.3

넙치사료에 유자과실을 갈아서 0, 2.5, 5, 7.5% 첨가하여 3개월 간 사육한 후 사육효과 및 자체 항병력 증가 효과를 알아보았다. 유자를 첨가한 사료에서 성장의 유의적인 증가는 없었으나 7.5% 첨가 사료로 사육한 넙치는 2.5%∼5% 첨가한 넙치 보다 체중 증가량이 적었다. 혈액학적인 조사 결과에서도 유자첨가로 인하여 넙치의 생리 상태에 부정적인 영향을 보이지는 않았으며 혈중 GOT 및 총콜레스테롤을 감소시키는 효과가 있어 건강도가 증진되는 것으로 나타났다. 혈청의 항세균 활성은 7.5% 시험구에서 높았으나, 라이소자임 활성은 실험구간 차이가 없었다. 어류병원세균의 인위감염에 대한 넙치의 질병저항성은 실험구 간에 차이가 없었으나 2.5% 유자 첨가구의 넙치에서 폐사가 지연되는 효과를 보였다. 그러므로 사료에 유자를 첨가하여 사육하는 것은 넙치의 어류생리학적 식품영양학적인 면에서 부정적인 영향은 없으나 유자첨가량을 2.5 %∼5 % 사이로 하여 사육하는 것이 바람직할 것으로 판단되었다. Effects of various concentration of yuzu Citrus junos Siebold ex Tanaka in the diets on growth, blood chemistry and disease resistance of olive flounder were determined. Fifteen hundred fish averaging 200∼270g were fed on moist pellet containing yuzu at the concentrations of 0%(control), 2.5%, 5% and 7.5% for 3 months. After feeding trial, weight gain of fish fed 2.5% and 5.0% yuza diet was higher than those of fish fed 0% and 7.5% yuza diet but not significant(P>0.05). No differences in hematological and physiological indices of olive flounder were found among the experimental diets except for total cholesterol. Serum lysozyme activity was not significantly different among fish fed experimental diets but bactericidal activity of fish fed 7.5% yuza diet was significantly different from those of fish fed 0, 2.5 and 5% Yuza diets. Survival rates of fish fed 2.5% yuza diet at experimental infection with Edwardsiella tarda and Streptococcus sp. were higher than those of the other experimental groups but not significant. In conclusion, Dietary inclusion of 2.5∼5% yuzu seems to have positive effects for fish health condition and disease resistance.

Bupivacaine이 배양 백서 심근세포에 미치는 세포독성에 관한 연구

김태요,채종한 대한마취과학회 1994 Korean Journal of Anesthesiology Vol.27 No.2

In an attempt to evaluate the cardiotoxicity of bupivacaine, beating rate, tetrazolium MTT and lactate dehydrogenase activity were investigated in the medium containing bupivacaine for 24 hours after neonatal rat myocardial cells were cultured for 72 hours. Light and electron microscopic studies were also carried out. The results were as follows ; 1) Beating rate decreased dose-dependently, and beating cells were not observed over 10(-4) M concentration of bupivacaine. 2) MTT50 value was 0.32 ㎍/ml (1,000 uM). 3) The amount of lactate dehydrogenase released into the medium was 192% of control cells at 10(-3) M concentration of bupivacaine. 4. In light microscopy, myocardial cells were decreased in number dose-dependently, and showed a few cytoplasmic processes and lots of granules in cytoplasm at 10 M concentration of bupivacaine. 5. Electron microscopy of bupivacaine-treated cells showed smooth endoplasmic reticulum, destruction of mitochondria and Golgi apparatus and increase of vacuoles and dense bodies. It also showed dilatation of rough endoplasmic reticulum and loss of myofibrils. These results suggest that high concentration of bupivacaine (≥10(-4) M) induee remarkable toxicity on cultured rat myocardial cells.

각성 환자의 동맥혈 가스분압의 변화에 대한 비교 연구

김태요,송윤강,정경술 대한마취과학회 1986 Korean Journal of Anesthesiology Vol.19 No.4

Preoxygenation is routine preior to induction of general ancsthesia for the purpose of maintaining oxygenation during laryngoscopy and tracheal intubation. A common method of preoxygenation is 3∼5 minutes of 100% O_2 breathing. In some emergency states, there may not be adequate time for a full 3-5 min of preoxygenation. Recently, Gold and some others showed that four maximally deep inspirations of 100% O_2 within 30 seconds are as effective as 5minutes of inhaltion of 100% O_2 for increasing the PaO_2 We compared the changes of arterial blood gas beween a group which took deep breaths for 1 mimute with 100% O_2 and a group breathing spontaneously for 5 minutes with 100% O_2.