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비페닐 디메칠 디카르복실레이트 고체분산체 정제 처방의 최적화
이장원(Jang Won Lee),박은석(Eun Seok Park),지상철(Sang Cheol Chi) 한국약제학회 1998 Journal of Pharmaceutical Investigation Vol.28 No.4
N/A Biphenyl dimethyl dicarboxylate (DDB) has been used for the treatment of acute and chronic hepatitis. However, its poor solubility in water, 2.5 ㎍/㎖, caused low bioavailability of the drug after its oral administration. In order to increase the dissolution of DDB in gastrointestinal tracts, consequently to increase the bioavailability of the drug, DDB tablet was prepared with solid dispersion of DDB with poloxamer 338 or 407 using a direct compression method. To improve the flowability of the solid dispersion, Aerosil was used as an adsorbent. The effect of formulation variables (poloxamer and Aerosil contents) on the dissolution rate of DDB from tablets was investigated using an analysis of variance. The dissolution rate of DDB from tablets was evaluated with KP II (paddle) method. The dissolution patterns of the drug from the tablet prepared with poloxamer 407 were affected significantly by the contents of poloxamers and Aerosil over the range employed, but those of the drug from the tablet prepared with poloxamer 338 were not. The optimum formulation of the DDB tablet, showed the same dissolution pattern as that of the reference, was obtained after polynomial equations of drug dissolution profiles for each formula were fitted to contour plots. The optimum formulation ratios of DDB: poloxamer 407: Aerosil were 1:2.5:2.5 and 1:5:5.
이장은(Jang-Eun Lee),이숙종(Sook Jong Rhee),이철호(Cherl-Ho Lee) 한국식품과학회 2013 식품과학과 산업 Vol.46 No.2
본 연구는 식품의 이온화 조사 처리기술로 얻을 수 있는 경제적 이득을 정량적으로 보여줄 수 있는 자료를 마련하기 위한 것이다. 이온화 조사가 허용되었거나 앞으로 허용 가능한 농산물의 수확 후 관리 손실 비용을 분석하고, 가공식품의 저장성 향상에 의한 경제적 이득에 대하여 조사하였으며, 식품의 이온화 조사로 예방 할 수 있는 식중독 사고의 정도와 그 사회 경제적 비용절감을 추산하였다. 신선식품의 연간 수확 후 손실 비용은 감자, 마늘, 양파, 고추에 대해 총 1조 1,251억 원으로 추산되었다. 현재 이온화 조사가 허가된 품목(다류, 장류, 조미식품, 드레싱)의 유통기한 초과로 인한 폐기 손실액은 899억 원으로 조사되었다. 현재 이온화 조사가 허용 되지는 않았으나 향후 조사품목을 확대하였을 때 포함될 수 있는 품목(식육과 알 가공품, 어육가공품, 건포류, 축산가공품)의 유통기한 초과에 의한 폐기손실액은 총 1,931억 원으로 조사되었다. 식품의 이온화 조사로 예방 가능한 식중독의 보건 사회적 비용을 추산한 결과 이온화 조사로 사멸효과가 큰 E. coli O157, Campylobacter jejuni, Salmonella spp.에 의한 식중독 감소 효과로 연간 880억 원의 보건 사회적 비용 감소효과를 가져올 것으로 보여지며, 전체 세균성 식중독으로 확대하여 분석 한 결과 1,790억 원의 비용 감소효과를 가져올 것으로 추산되었다. 이온화 조사 처리기술은 식중독 예방에 의한 보건의료비의 절감 기능과 아울러 식품산업의 유통손실 절감과 식량 유실을 막는 효과적인 방법이므로 식량안보적 차원에서 적극 활용되어야 할 것으로 판단된다.
만성 C형간염에서 지속적 바이러스 반응 이후의 재발: 페그인터페론과 리바비린 병합 치료 후 지속적 바이러스 반응을 보인 환자에서 재발과 연관된 인자
이장은 ( Jang Eun Lee ),윤나리 ( Na Ri Yoon ),김진동 ( Jin Dong Kim ),송명준 ( Myeong Jun Song ),권정현 ( Jung Hyun Kwon ),배시현 ( Si Hyun Bae ),최종영 ( Jong Young Choi ),정승원 ( Sung Won Jeong ),윤승규 ( Seung Kew Yoon ) 대한소화기학회 2011 대한소화기학회지 Vol.57 No.3
Background/Aims: Pegylated interferon plus ribavirin combination therapy has been the standard of therapy for patients with chronic hepatitis C. Although previous studies have reported long term durability after the sustained virologic response (SVR) with standard therapy for chronic hepatitis C, it is still unclear in Korea. The aim of this study was to evaluate the relapse rate and related factors after SVR to pegylated interferon therapy in Korean patients with chronic hepatitis C.Methods: A total of 119 chronic hepatitis C patients were treated with pegylated interferon plus ribavirin, and 73 atients achieved SVR (61.3%). Among 73 patients who achieved SVR, 68 patients (genotype 1, n=40; genotype non-1, n=28) were evaluated for virological response after SVR. Results: SVR rate in genotype 1 and genotype non-1 were 52.5%, and 65.1%, respectively. Relapse after SVR occurred in 5 patients (7.4%) with genotype 1, and the median time to relapse from SVR was 10 months. Univariate analysis revealed that the dose reduction of pegylated interferon (p=0.005) and cirrhosis (p=0.03) were significantly associated with relapse. Conclusions: These results suggested that the relapse could occur even after SVR achievement in Korean patients with chronic hepatitis C, and the dose reduction of pegylated interferon during treatment or having cirrhosis may increased the risk for relapse. (Korean J Gastroenterol 2011;57:173-179)
이장은(Jang-Eun Lee),강선희(Sun Hee Kang),김혜련(Hye Ryun Kim),임성일(Seong Il Lim) 한국식품영양과학회 2015 한국식품영양과학회지 Vol.44 No.6
본 연구는 국내 전통식품 품질인증 된장에 대한 휘발성 향기성분 특성을 분석하여 전통된장의 과학적 관리를 위한 기초자료를 마련하고자 수행되었다. 이를 위해 수집된 전통된장을 대상으로 headspace SPME-GC/MS 분석을 실시하고 전반적인 국내 유통 전통된장의 휘발성 성분 패턴을 분석하였다. 연구 결과 총 59종의 성분이 동정되었고 각각 acids 8종, alcohols 8종, aldehydes 8종, esters 15종, ketones 2종, phenols 4종, pyrazines 9종, miscellaneous 5종으로 확인되었다. 전통된장의 주요성분은 acid류, ester류, aldehyde류 및 pyrazine류였으며, 그중 acetic acid, ethyl alcohol, benzaldehyde, ethyl acetate, ethyl 2-methyl butanoate, 2,5-dimethylpyrazine 및 tetramethylpyrazine이 동정된 전통된장의 휘발성 성분 중 비교적 높은 강도를 차지하였다. 주성분 분석 결과 대부분의 전통된장은 기본적인 휘발성 향기성분의 조성이 유사한 것으로 나타났으나 isovaleric acid, 2-methylbenzaldehyde, tetramethylpyrazine, benzaldehyde, ethyl alcohol, ethyl caprylate, furfural, butanoic acid 성분들이 일부 된장에서 특이적으로 높아 이들 성분이 전통된장의 품질지표가 될 수 있을 것이라 보였다. 본 연구 결과는 전통식품 품질인증 된장에 대한 휘발성 향기 특성을 데이터베이스화하여 품질 현황을 파악하고 지속적인 품질관리를 통한 제품 발전의 방안으로 제시될 수 있을 것이다. The purpose of this study was to provide a basis for the management of traditional Doenjang by analyzing characteristics of volatile compounds in local Doenjang certified as a traditional food. The main compounds in Doenjang were acids, esters, aldehydes, and pyrazines, whereas relatively high intensities of acetic acid, ethyl alcohol, benzaldehyde, ethyl acetate, ethyl 2-methyl butanoate, 2,5-dimethyl pyrazine, and tetramethylpyrazine were detected among identified compounds. The analysis revealed that the composition of basic volatile compounds in Doenjang was similar, but isovaleric acid, 2-methylbenzaldehyde, tetramethylpyrazine, benzaldehyde, ethyl alcohol, ethyl caprylate, furfural and butanoic acid can serve as marker compounds for quality evaluation since they were specifically abundant in only some kinds of Doenjang. As a result, the quality status of Doenjang certified as a traditional food was determined by constructing a database of the volatile compounds, which can be suggested as a quality control method.
20대에서 발병한 간세포암 복합 치료에 반응을 보인 진행성 간세포암
이장은 ( Jang Eun Lee ),윤나리 ( Na Ri Yoon ),배시현 ( Si Hyun Bae ),최종영 ( Jong Young Choi ),윤승규 ( Seung Kew Yoon ),김동구 ( Dong Goo Kim ),천호종 ( Ho Jong Chun ),최병길 ( Byung Gil Choi ),이해규 ( Hae Giu Lee ),장홍석 ( Ho 대한간암학회 2009 대한간암학회지 Vol.9 No.-
The prognosis of young patients with hepatocellular carcinoma is remains controversial. Here we report a case of advanced hepatocellular carcinoma in twenty, successfully treated with transarterial chemolipidolization (TACL), systemic chemotherapy, radiation therapy and surgical resection. Previously healthy 28 years old woman was admitted for treatment of hepatocellular carcinoma. Abdominal CT showed a diffuse infiltrative HCC involving both lobes with intrahepatic bile duct invasion and pericardial lymphadenopathy. She was treated TAC with systemic chemotherapy and external beam radiotherapy. 6 months after these treatments, main tumor and the pericardial lymph node were decreased in size. And then extended left lobectomy and systemic chemotherapy were done. The pericardial lymph node was markedly decreased. The patient has been followed for 10 months without evidence of regional tumor recurrence.