• 대한핵의학회:학술대회논문집
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• 대한핵의학회 1986년도 제25차 춘계학술대회
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• pp.115.1-115.1
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• 1986

• 약학회지
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• 제18권3호
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• pp.165-182
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• 1974

• Neonatal Medicine
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• 제16권2호
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• pp.239-243
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• 2009

다소성 심방 빈맥은 신생아에서 드물게 발생하며 진단하기에 어려워 심방 조동으로 오인되기도 한다. 치료가 어려우나 생후 1년 안에 자연적으로 사라지는 경우도 있다. 불규칙한 심방 빈맥을 가진 신생아에게 직접 제작한 경식도 전극을 이용한 심전도를 시행하여 다소성 심방 빈맥을 진단하였다. Propranolol은 치료에 효과적이지 않았으나 digoxin과 sotalol 투여 후 환자는 점차 동리듬으로 회복되었다. 신생아에서 경식도 전극을 이용하여 다소성 심방 빈맥을 진단하였던 1례를 보고한다.

• Journal of Chest Surgery
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• 제25권9호
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• pp.905-911
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• 1992

Automatic junctional tachycardia is one of common atrial arrhythmia after open heart surgery which is often refractory to antiarrhythmic agents. We have experienced refractory automatic junctional tachycardia in two patients. In the first, it occured after cryosurgery for AV nodal reentry tachycardia and simultaneous dissection of a posterior septal bypass tract. In the second, it complicated the postoperative course of a patient who received intracardiac repair for double outlet right ventricle, ventricular septal defect, and pulmonary stenosis. Conventional therapy with atrial pacing, verapamil, digoxin, and electrical cardioversion were ineffective. Therefore, amiodarone was administered intravenously and it controlled automatic junctional tachycardia. The need for accurate and rapid diagnosis of this condition along with results of treatment are discussed.

• 대한약학회:학술대회논문집
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• 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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• pp.281.2-281.2
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• 2002

Chan Su the dried toad venom. has been used in Asian countries as the traditional medicine for the purpose of the alleviation of pain, cardiotonic diuresis. hemostasis and et al.. However, Chan Su is the special attention-needed medication because it is known to contain the highly toxic compounds such as bufotenine, an hallucinogen and aphrodisiac, and a series of bufadienolides, cardiotonic steroids that produce physiological symptoms similar to digoxin. (omitted)

• 정신신체의학
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• 제19권2호
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• pp.57-65
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• 2011

많은 심혈관질환약물과 향정신성약물 간에 다양한 약물상호작용이 존재하며 이러한 약물들의 대부분이 시트크롬(cytochrome, CYP)450 효소의 기질, 억제제, 유도제로 작용하면서 약물상호작용이 일어나게 된다. 주로 CYP2D6와 CYP3A4를 억제하는 향정신성약물로 인해 같이 투여되는 심혈관질환약물의 효과가 변할 수 있고 부작용까지 나타날 수 있다. 이런 상황을 고려하고 반대의 경우도 포함하여 흔히 처방되는 두 종류의 약물을 병용 투여하는 경우 고려해야 할 부분에 대해서 심혈관질환약물 분류에 따라 논하였다. 대부분의 베타차단제는 CYP2D6의 대사에 의존하므로 이 대사를 억제하는 bupropion, chlorpromazine, haloperidol, SSRIs, quinidine 등을 사용했을 때 베타차단제의 독성이 나타날 수 있다. 앤지오텐신 관련 약물과 이뇨제가 lithium의 농도를 변화시키는 점도 고려하여야 한다. 칼슘통로차단제 및 콜레스테롤강하제를 CYP3A4의 강력한 억제제인 amiodarone, diltiazem, fluvoxamine, nefazodone, verapamil 등과 함께 사용하였을 때 약물 상호작용에 따른 부작용에 유의하여야 한다. 항부정맥제를 복용하는 환자에서 QT 간격 증가를 야기하는 약물이나 관련 CYP450 효소를 억제하는 약물을 동시에 투여하는 것은 삼가거나 적극적인 관찰이 필요하다. Digoxin과 warfarin이 병용 투여되는 향정신성약물로 인해 혈중 농도가 변하는 것도 임상적으로 중요하다.

• 분석과학
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• 제26권4호
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• pp.221-227
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• 2013

LC-MS/MS를 이용하여 인체 혈장 중 ginsenoside Rg1의 신속하고 정확한 분석법을 개발하고 이 분석법에 대한 검증을 수행하였다. 혈장 분석을 위하여 internal standard인 digoxin을 첨가한 후 acetone과 methanol용액 (80:20)으로 전처리하고, 그 상층액을 진공농축 한 후, LC-MS/MS로 분석하였다. 최적 크로마토그래피 분석은 0.1% formic acid 첨가된 water와 methanol을 이동상으로 하여 Agilent Eclipse XDB-C18 column ($4.6{\times}150mm$, $5{\mu}m$)을 이용하여 0.9 mL/min의 유속으로 gradient mode로 수행하였다. 혈장 중 ginsenoside Rg1의 표준 검량선은 1~500 ng/mL의 농도 범위에서 우수한 직선성($r^2=0.9995$)을 보였으며, 일내, 일간 정밀성은 변동계수 7.53% 이하, 정확성은 98.28% 이상이었다. 결과적으로 본 분석법은 ginsenoside Rg1의 약동학 연구에 적용되기에 충분한 감도와 특이성, 직선성, 정밀성 및 정확성을 가지고 있음을 확인하였다.

• Journal of Microbiology and Biotechnology
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• 제22권12호
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• pp.1659-1664
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• 2012

TSAHC [4'-(p-toluenesulfonylamido)-4-hydroxychalcone] is a promising antitumorigenic chalcone compound, especially against TM4SF5 (four-transmembrane L6 family member 5)-mediated hepatocarcinoma. We evaluated the potential of TSAHC to inhibit the catalytic activities of nine cytochrome P450 isoforms and of P-glycoprotein (P-gp). The abilities of TSAHC to inhibit phenacetin O-deethylation (CYP1A2), coumarin 6-hydroxylation (CYP2A6), bupropion hydroxylation (CYP2B6), amodiaquine N-deethylation (CYP2C8), diclofenac 4-hydroxylation (CYP2C9), omeprazole 5-hydroxylation (CYP2C19), dextromethorphan O-demethylation (CYP2D6), chlorzoxazone 6-hydroxylation (CYP2E1), and midazolam 1'-hydroxylation (CYP3A) were tested using human liver microsomes. The P-gp inhibitory effect of TSAHC was assessed by [$^3H$]digoxin accumulation in the LLCPK1-MDR1 cell system. TSAHC strongly inhibited CYP2C8, CYP2C9, and CYP2C19 isoform activities with $K_i$ values of 0.81, 0.076, and $3.45{\mu}M$, respectively. It also enhanced digoxin accumulation in a dose-dependent manner in the LLCPK1-MDR1 cells. These findings indicate that TSAHC has the potential to inhibit CYP2C isoforms and P-gp activities in vitro. TSAHC might be used as a nonspecific inhibitor of CYP2C isoforms based on its negligible inhibitory effect on other P450 isoforms such as CYP1A2, CYP2A6, CYP2B6, CYP2D6, CYP2E1, and CYP3A.

• Asian Pacific Journal of Cancer Prevention
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• 제13권1호
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• pp.399-402
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• 2012

Bufalin is a traditional oriental medicines which induces apoptosis in some lines of human tumor cells. It constitutes the major digoxin-like immunoreactive component of Chan Su, obtained from the skin and parotid venom glands of toads. Bufalin is cardioactive C-24 steroids that exhibits a variety of biological activities, such as cardiotonic, anaesthetic, blood pressure stimulatory, respiratory and antineoplastic effects. In terms of its anti-tumor activity, bufalin has been demonstrated to inhibit the growth of tumors, such as endometrial and ovarian cancers. This commentary introduces biologic and therapeutic effects of bufalin in treating some cancers. The compound is able to mediate inhibition of cell growth, cell cycle arrest, apoptosis, and expression of genes related to the malignant phenotype in human cancer cells.

• Natural Product Sciences
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• 제20권1호
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• pp.1-6
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• 2014

P-glycoprotein (P-gp) is a permeability glycoprotein also known as multidrug resistance protein 1 (MDR1). P-gp is an ATP-binding cassette (ABC) transporter that pumps various types of drugs out of cells. These transporters reduce the intracellular concentrations of drugs and disturb drug absorption. The Caco-2 cell permeability assay system is an effective in vitro system that predicts the intestinal absorption of drugs and the functions of enzymes and transporters. Rhodamine-123 (R-123) and digoxin are well-known P-gp substrates that have been used to determine the function of P-gp. Efflux of P-gp substrates by P-gp has been routinely evaluated. To date, a number of herbal medicines have been tested with Caco-2 cell permeability assay system to assess bioavailability. There are growing efforts to find phytochemicals that potentially regulate P-gp function. The Caco-2 cell permeability assay system is a primary strategy to search for candidates of P-gp inhibitors. In this mini review, we have summarized the P-gp modulation by herbal extracts, decoctions or single components from natural products using Caco-2 cell permeability assays. Many natural products are known to regulate P-gp and herbal medicines could be used in combination with conventional drugs to enhance bioavailability.