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- 저자 : 안효정 ( Hyo Jeong Ahn ) (검색결과 5 건)
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( Se Jeong Kim ),안효정 ( Hyo Jeong Ahn ),( Jung Yeon Park ),( Byoung Jae Kim ),( Kyu Ri Hwang ),( Taek Sang Lee ),( Hye Won Jeon ),( Sun Min Kim ) 대한산부인과학회 2018 대한산부인과학회 학술대회 Vol.104 No.-
Objective Pregnancy is a major risk factor of thromboembolism, and the patients with preeclampsia (PE) are known to have higher risk of thromboembolic complications than normal pregnant women. D-dimer is a well-established laboratory marker for the screening of venous thromboembolism (VTE), but the concentrations of d-dimer tend to increase physiologically in pregnant women throughout the gestational age. We performed this study to evaluate the clinical significance of d-dimer concentrations in patients with gestational hypertensive disorders (GHD) according to the severity. Methods Retrospective cohort study was performed in one institution. Singleton pregnant women with GHD were enrolled, and their antepartum concentrations of d-dimer were measured as a part of routine evaluation for patients suspected with PE. Patients with multiple gestations, rheumatic diseases, autoimmune diseases, or suspected VTE were excluded. A categorization of severity about PE was based on the general criteria. Results In 73.3% of study population, their d-dimer concentrations exceeded the normal range (>0.55 mg/L). A significantly greater proportion of pregnant women had excessive concentrations of d-dimer in the severe GHD than in the non-severe GHD (89.8% vs. 53.7%; P<0.01). Patients with severe GHD had significantly higher median concentrations of d-dimer than those with non-severe GHD (median [range], 2.00 mg/L [0.11 to 7.49] vs. 0.71 mg/L [0.09 to 5.39]; P<0.01) although their earlier gestational ages of sampling. Conclusion Maternal concentrations of d-dimer were significantly elevated in patients with severe features than those without severe features among those with GHD. Some pregnant women with GHD can have markedly elevated concentrations of d-dimer without any evidence of current VTE.
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염료감응형 태양전지의 비백금 상대전극을 위한 Co가 내재된 Graphitic 다공성 탄소나노섬유
안혜란,강혜린,선효정,한지호,안효진,An, Hye Lan,Kang, Hye-Rhin,Sun, Hyo Jeong,Han, Ji Ho,Ahn, Hyo-Jin 한국재료학회 2015 한국재료학회지 Vol.25 No.12
Co-embedded graphitic porous carbon nanofibers(Co-GPCNFs) are synthesized by using an electrospinning method. Their morphological, structural, electrochemical, and photovoltaic properties are investigated. To obtain the optimum condition of Co-GPCNFs for dye-sensitized solar cells(DSSCs), the amount of cobalt precursor in an electrospinning solutuion are controlled to be 0 wt%(conventional CNFs), 1 wt%(sample A), and 3 wt%(sample B). Among them, sample B exhibited a high degree of graphitization and porous structure compared to conventional CNFs and sample A, which result in the performance improvement of DSSCs. Therefore, sample B showed a high current density(JSC, $12.88mA/cm^2$) and excellent power conversion efficiency(PCE, 5.33 %) than those of conventional CNFs($12.00mA/cm^2$, 3.78 %). This result can be explained by combined effects of the increased contact area between the electrode and elecytolyte caused by improved porosity and the increased conductivity caused by the formation of a high degree of graphitization. Thus, the Co-GPCNFs may be used as a promising alternative of Pt-free counter electrode in DSSCs.
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항MRSA (Methicillin Resistant Staphylococcus aureus) 활성을 나타내는 해양미생물의 분리
우예주 ( Ye Ju Woo ),도태웅 ( Tae Woong Do ),남예지 ( Ye Ji Nam ),안효정 ( Hyo Jung Ahn ),김미선 ( Mi -sun Kim ),전상아 ( Sang A Jeon ),정성윤 ( Seong Yun Jeong ) 대구가톨릭대학교 자연과학연구소 2011 자연과학연구논문집 Vol.9 No.1
Abstract:It was isolated marine bacterium, isolate YJ-1 which produced a bactericidal antibiotics against MRSA. This isolate was identified as tested by examining its morphological and biochemical properties, and 16S rDNA sequencing analysis for identification. This isolate YJ-1 was identified to the genus Pseudomonas. Therefore, this isolate was designated Pseudomonas sp. YJ-1. Pseudomonas sp. YJ-1. relatively grows well in the 25℃, pH 7.0, NaCl 1.0 %. For the purification of the bioactive compounds, YJ-1 was fermented in 37 L-PPES-Ⅱ medium, and culture filtrates of YJ-1 was extracted by ethyl acetate, hexane, and 80% MeOH. The 80% MeOH fraction of YJ-1 was showed the significant anti-MRSA (methicillin-resistant Staphylococcus aureus) activity against MRSA.
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박인숙,안미령,서수경,이선우,최흥석,안은주,진숙,손수정,구효정,양지선,유태무 식품의약품안전청 2000 식품의약품안전청 연보 Vol.4 No.-
약물에 대한 약동학(PK) 및 약력학(PD) 연구는 최적의 약물효과를 얻기 위한 약물툰여계획수립에 대한 기본데이타를 제공하띠 현대 약물요법에서 그 중요성이 더욱 강조되고 있다. PK-PD 모델링은 투여용량-혈중농도-약효간의 관계를 수학적으로 묘사하여 약동학 및 약력학 사이의 정량적이고 구체적인 상관성을 규명하고 이를 이용하여.투여용량으로부터 시간에 따른 약물의 동태 및 효력을 예측할 수 있다. 따라사 신약개발시에도 전임상단계 및 임상시험단계에서 PK-PD에 관한 정보가 제공되면 의다 적절한 약물요법을 결정하여 약물의 효과를 극대화할 수 있으므로 치료률 및 신약개발의 가능성을 높이는데 기여한다. 본 시험에서는 PK-PD 모델링에 대한 기본개념 및 방법을 연구하고자, 국내예서 개발된 캄토테신계 항암제인 CKD-6OB를 이용하여 약물의 약동학 및 약력학적 특성을 HT-29 cell에서 측정하였다. 항암제의 치료는 암세포로의 약물침투 및 효력발현 시점에 따라 투약을 조절함으로써 부작용을 최소화할 수 있다. 따라서 효력검색을 위하여 MTT 측정법을 사용하여 암세포의 증식정도를 측정하였으며, 투여시간에 판른 세포내외의 약물농도 측정을 통하여 약물동태를 연구하였다. 실험결과 CKD-602의 HT-29 cell에 대한 ICD는 250nbt로 나타났으며, 약물투여 24시간 후부터 세포로의 유입이 나타났파. 그러나 CKD-602의 쎄포내외의 농도비율이 거의 변화가 없으며 CKD-602의 려T-29 cell 에 대한 지연효과가 나폭나는 것으로 미루어 CKD-602의 항암효력이 약물농도 주입속도와 상관성이 있을 것으로 사료된다. Pharmacokinetic(PK) and pbarrnacodynamic(PD) information get from the scientific basis of modern iharrnacotheraDy PharrnacoEnetics describes ·the drug concentration- time courfes in body Huids resulting from administration of a cnfain drug dost and pharmacodynamics describes the observed effect resulting from a crrtain drug concentration. A Pf(/PD model is amathematical descfption of these relationships. The rationale for PK#PD-rnodelfng is to linkpharmacokinetics arid pharrnacofynamics In order to establish and evaluate dose-concentration-response relationships and subseauently describe and predict the effect-time courses resultingfrorrl a drug dose. The expanded use cf PK/PD-modeITing is assumed to be highly beneficialfor drug development as well as applied pharrnacotherfpy and will most likely improve thecurrent state of applied therapeutics. The anticancer drug therapy depends on the ability of the drug to penetrate on the solidtumor for the time-and concentraton-dependent drug. The present study examined thedeterminants of Pft/PD modeling of CKD-602 in HT-29 cel.Is. Anticancer effects of CKD-602by MTT assay was dependent on the time and the concentration. The concentration ofCKD-602 in both the cell and the medium was correlated with time and drug concentration.But pharmacodynamics of CKD-602 was not drug uptake limited and the relative importance ofdrug was exposure time. The knowledge of relative importance of a drug. in pbarrnacodynamicstudies will heTp to idendify the optimal dose resimens.
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