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Erythropoietin 의 in vitro 분석방법에 관한 연구
김창규,정구헌,이광무,곽효성,양호석,서정선 ( Chang Kyu Kim,Koo Hun Chung,Kwang Moo Lee,Hyo Sung Kwak,Ho Suk Yang,Jung Sun Seo ) 생화학분자생물학회 1991 BMB Reports Vol.24 No.1
We described the method that provides simple, specific, sensitive and precise erythropoietin(EPO) assay. Experiment dealing with the various parameters involved in the procedure was described. The microassay that utilizes spleen cells from phenylhydrazine treated mice as the responder population and ³H-thymidine incorporation as the endpoints was established. Under the our condition used, EPO levels from 20 mU/well down to as little as 0.3 mU/well can be accurately measured with a corresponding variation in counts of 50 fold. This assay takes 28h and requires only very small(10 ㎕) samples for evaluation. The results obtained from the assay of urine samples were in good agreement with the values derived by R·I·A (r=0.86).
Erythropoietin의 in vitro 분석방법에 관한 연구
김창규,정구헌,이광무,곽효성,양호석,서정선,Kim, Chang-Kyu,Chung, Koo-Hun,Lee, Kwang-Moo,Kwak, Hyo-Sung,Yang, Ho-Suk,Seo, Jung-Sun 생화학분자생물학회 1991 한국생화학회지 Vol.24 No.1
적혈구 생성 유도인자인 erythropoietin(EPO)의 in vitro 분석방법을 확립하였다. Phenylhydrazine을 주사한 후 적출한 생쥐의 비장세포는 EPO투여에 매우 민감한 반응을 보이며 이는 $^3H$-thymidine 표지에 의해 새롭게 형성되는 세포를 측정하는 본 분석방법의 기초를 제공해준다. 본 방법에 소요되는 시간은 28시간이며 소량의 시료($10\;{\mu}l$)로 측정이 가능하다. 분석한계는 3 mU/ml에서 200 mU/ml 정도였으며 동일한 시료를 방사선 면역분석법과 본 방법으로 동시에 측정했을 때 r=0.86의 상관관계를 보였다. We described the method that provides simple, specific, sensitive and precise erythropoietin(EPO) assay. Experiment dealing with the various parameters involved in the procedure was described. The microassay that utilizes spleen cells from phenylhydrazine treated mice as the responder population and $^{3}H$-thymidine incorporation as the endpoints was established. Under the our condition used, EPO levels from 20 mU/well down to as little as 0.3 mU/well can be accurately measured with a corresponding variation in counts of 50 fold. This assay takes 28h and requires only very small($10\;{\mu}l$) samples for evaluation. The results obtained from the assay of urine samples were in good agreement with the values derived by R I A (r=0.86).
이민화(Min Hwa Lee),곽효성(Hyo Sung Kwak),송영준(Young Joon Song),조용백(Yong Baik Cho),신광범(Kwang Bum Shin) 한국약제학회 1986 Journal of Pharmaceutical Investigation Vol.16 No.4
The ingredients or particle size of active substance can significantly influence the release of the drug to the gastro-intestinal fluids and thereby affect the rate and extent of absorption. Rifampicin is administered with isoniazid or pyrazinamide as combined capsules from time to time to treat for tuberculosis effectively. The influence of isoniazid and pyrazinamide and particle size of rifampicin in rifampicin combined capsules was studied on the bioavailability of rifampicin. Single oral dose of 600㎎ rifampicin as capsules was administered to volunteers in fasting conditions and we studied the diffusion, and absorption rate constant and dissolution using Sartorius absorption and dissolution simulator. Isoniazid and pyrazinamide can affect on the bioavailability of rifampicin in rifampicin combined capsules and the absorption of rifampicin has no relationship with particle size of it. Also we can predict the bioavailability of rifampicin by using the Sartorius absorption and dissolution simulator.
구본용(Bon Yong Koo),유희철(Hee Chul Yu),김광옥(Guang Yu Jin),황홍필(Hong Pil Hwang),김영곤(Young Kon Kim),곽효성(Hyo Sung Kwak),조백환(Baik Hwan Cho) 대한외과학회 2008 Annals of Surgical Treatment and Research(ASRT) Vol.74 No.4
As living-donor liver transplant techniques develop, variations in the portal vein are seen in approximately 20% of the population. However, congenital absence of the horizontal segment of the left portal vein is very rare and has not been reported in Korea. We present a case with a congenital absence of the horizontal segment of the left portal vein that was detected during an evaluation for a living donor liver transplantation, with a review of the relevant literature.
곽효성,한영민,임영수,전수빈,이상용,정경호,김종수,손명희,최기철 의과학연구소 1998 全北醫大論文集 Vol.22 No.1
1. Purpose : To evaluate of the effectiveness of bronchial arterial embolization acdording to the causess of hemoptysis. 2. Materials and methods : This study included 39 patients who had undertaken arterial embolization for the control of hemyptysis. The patinets were classified 1. Purpose: To evaluate of the effectiveness of bronchial arterial embolization according to the causes of hemoptysis. 2. Materials and methods: This study included 39 patients who had undertaken arterial embolization for the control of hemoptysis. The patinets were classified into the three groups: pulmonary tuberculosis (n=22), idiopathic bronchiectasis (n=10), lung cancer (n=7). Gelfoam particle were used as embolized material for all patients. And only for two patients, embolization coil was interpolated. The period of follow-u[ was from 1 to 66 months after arterial embolization. Immediate results were assessed based on careful observation of patients for 1 month after arterial embolization: success, indicating complete cessation of hemoptysis for 1 month: and fail, indicating continued hemoptysis or recurrent hemoptysis within 1 month. Long-term results were evaluated in patients with immediate success who could be followed for at least 1 month. Patients were classified into the three categories: complete remission, indicating complete cessation of bleeding during the observation period : partial remission, indicating complete cessation of hemoptysis with recurrent bloody sputum during the observation period : and recurrence, indicating recurrent hemoptysis. 3. Results : immediate success rate was 76.9%(30/39), and as classified into the causes, idiopathic bronchiectasis 90.0% (9/10), pulmonary tuberculosis 81.8% (18/22), lung cancer 42.9%(3/7). Long-term results in the causes of idiopathic bronchiectasis showed a high remission rate (77.8%), a low recurrence rate (22.2%). In pulmonary tuberculosis, remission rate was 70.8%m recurrence rate was 29.4%. No recurrence was observed in the cases of success of the lung cancer. During and after embolization, the complications were mild chest pain 1 or fever, which relieved spontaneously within a few days. 4. Conclusion : The benign diseases such as pulmonary tuberculosis and idiopathic bronchiectasis showed a high immediate success rate and a high long-term remission rate. The lung cancer showed a low immediate success rate. But during observation period, lung cancer showed no recurrence. (Key Words : Lung, hemorrhage, therapeutic, blockade)