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단삼이 마우스 T-lymphocyte 및 Macrophage에 미치는 영향
은재순,엄승렬,염정열,전훈 우석대학교 생명과학연구소 1998 생명과학연구소 논문집 Vol.2 No.-
The purpose of this research was to investigate the regulative action of water extract of Salviae miltiorrhizae Radix(SE) on thymocyte and macrophage in mice. The proliferation in thymocyte was tested using a colorimetric tetrazolium assay(MTT assay), The apoptosis and subpopulation in thymocyte were tested using a flow cytometry. Nitric oxide(No) production from mouse peritoneal macrophage was tested using a Griess reagents and the phagocytic activity was tested using a lucigenin chemiluminescence. SE did not affect the proliferation, apoptosis and subpopulation(CD4^+/CD8^+) in thymocyte in vivo, but enhanced the proliferation in thymocyte in vitro. The n-BuOH fraction and water fraction of SE suppressed the nitric oxide production and results suggest the SE does not affect the activity of thymocyte, but suppressed the activity of macrophage.
황산(黃酸)을 중화제(中和劑)로 사용(使用)하는 소각(燒却)비산재의 습식(濕式) 처리(處理)
Eum, Nam-Il,Song, Young-Jun,Lee, Gye-Seung,Yoon, Si-Nae,Kim, Youn-Che,Jang, Yoon-Ho,Shin, Kang-Ho,Park, Charn-Hoon 한국자원리싸이클링학회 2006 資源 리싸이클링 Vol.15 No.6
In this study, the neutralization and dechlorination process of MWI(Municipal Waste Incinerator) fly ash with $H_2SO_4$ are investigated to recover HCI, which is delivered from the reaction of chloride in the ash and sulfuric acid. The coarse crystalline gypsum and fine impurity containing heavy metal are also separated by 500# wet screening followed by recrystallization of the dechlorinated ash mainly made of $CaSO_4$. As a results, Using 100g MWI fly ash and 85g cone. sulfuric acid as raw material, 52.6g hydrochloric acid with 35% assay and 116.9g crystalline gypsum with 98% or more assay are recovered. In this process, 7.85g fine impurity containing heavy metal and 2.65g coarse impurity are also separated. 본 연구에서는 소각비산재의 습식 처리에 관한 기초 자료를 얻을 목적으로 소각비산재의 물성, 황산에 의한 소각비산재의 중화과정, 황산에 의한 소각비산재의 탈염소 반응, 소각비산재와 황산의 반응에 의하여 생성한 이수석고의 결정성장 및 미립 중금속의 분리 둥에 관하여 조사하였다. 소각비산재와 황산을 반응시켜 염산을 회수하고 그 잔류물의 대부분을 차지하는 석고 성분을 선택적으로 결정성장 시켜 결정성이수석고와 중금속으로 분리하는 일련의 공정에서 100g의 소각비산재위 85g의 진한 황산을 사용하는 경우 35% 염산 52.6g, 순도가 98%이상인 결정질 이수석고 116.9g을 회수할 수 있으며, 이 과정에서 2.65g의 활성탄을 주로하는 조립불순물과 7.85g의 중금속함유 미립자들이 분리되었다.
Synthesis of Substituted Imidazolidin-2-ones as Aminoacyl-tRNA Synthase Inhibitors
Eum, Hee-Sung,Lee, Yu-No,Kim, Song-Mi,Baek, A-Young,Son, Min-Ky,Lee, Keun-Woo,Ko, Seung-Whan,Kim, Sung-Hoon,Yun, Sae-Young,Lee, Won-Koo,Ha, Hyun-Joon Korean Chemical Society 2010 Bulletin of the Korean Chemical Society Vol.31 No.3
Substituted imidazolidin-2-ones deduced as potential inhibitors of IleRS by docking simulations were synthesized from an aziridine-2-carboxaldehyde. Reductive amination of an aziridine-2-carboxaldehyde with dipeptides for the substituents at N1 and followed by aziridine-ring expansion with triphosgene afforded 4-chloromethylimidazolidin-2-ones whose chloride were further manipulated towards phenylurea, pyrimidin-2-yl-urea or benzenesulfonamide at C4.
김승섭(Seung-Sub Kim),경인구(Inn-Goo Kyeong),이미라(Mi-La Lee),김동구(Dong-Goo Kim),신지영(Ji-Young Shin),양진이(Jin-Yi Yang),이광호(Gwang-Ho Lee),음원식(Won-Sik Eum),강정훈(Jung-Hoon Kang) 한국유화학회 2014 한국응용과학기술학회지 Vol.31 No.4
The hot water extract from Artemisia capillaris fermented with Hericium erinaceum mycelium (AC-HE) were assessed for the protection against oxidative modification of biological macromolecules and cell death. Antioxidant activity of AC-HE evaluated using 2,2-diphenyl-1-picrylhydrazyl radical, 2,2 -azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) radical and peroxyl radical scavenging assays. AC-HE showed 61.73% DPPH radical scavenging activity at 500μg/mL, 97.39% ABTS radical scavenging activity at 250 μg/mL, and 44.18% peroxyl radical scavenging activity at 100 μg/mL. AC-HE were shown to significantly inhibited DNA strand breakage induced by peroxyl radical. AC-HE also prevented peroxyl radical-mediated human serum albumin modification. AC-HE effectively inhibited H2O2 induced cell death and significantly increased of the 11.47% cell survival at 100 μg/mL. AC-HE also decreased intracellular reactive oxygen species (ROS) levels in H2O2-treated cells. The results suggested that AC-HE can contribute to antioxidant and protected cells from oxidative stress-induced cell injury. 노루궁뎅이 버섯균사체(Hericium erinaceum)를 인진쑥(Artemisia capillaris)에 배양하여 조제한 AC-HE 열수 추출물이 생체고분자의 산화적 손상과 세포사멸을 보호할 수 있는 지를 관찰하였다. AC-HE의 항산화 활성을 DPPH radical, ABTS radical, peroxyl radical 소거활성 측정을 통해 알아보았다. 그 결과 DPPH radical 소거활성은 500 μg/mL 농도에서 61.73%, ABTS radical 소거활성은 250μg/mL 농도에서 97.39%, peroxyl radical 소거활성은 100 μg/mL 농도에서 44.18%로 나타났다. AC-HE은 DNA의 산화적 손상을 효과적으로 억제하였다. 또한 생체고분자물질인 사람의 혈청단백질의 산화적 손상을 억제하였다. 세포에 H2O2를 처리하였을 때 세포생존율에 비하여 발효물을 100 μg/mL농도로 전 처리한 세포생존율은 11.47% 증가했으며, 발효물을 50 μg/mL 농도로 처리했을 경우 세포내 ROS의 축적이 유의적으로 감소되었다. 따라서 AC-HE은 항산화 활성뿐만 아니라 산화적 스트레스에 의해 야기되는 세포 독성에 대한 보호 작용이 뛰어난 것으로 사료되었다.
급속응고한 AZ91 합금의 미세조직 및 기계적 특성에 미치는 Misch metal 첨가의 영향
엄승열 ( Seung Yeul Eum ),박훈모 ( Hoon Mo Park ),남태운 ( Tae Woon Nam ) 한국주조공학회 2000 한국주조공학회지 Vol.20 No.1
The purpose of this study is to investigate the effect of misch metal addition on the microstructure and mechanical property of rapidly solidified AZ91 alloy by melt spinning process. As the contents of misch metal(rare earth element:Ce, La, Nd, Pr) was increased, the microstructure of RS ribbons and extrudates became finer than those of AZ91, and RE related phases (Al11RE3, Al2RE) were formed. At room temperature, the rapidly solidified AZ91 +1 wt%Mm alloy showed the highest tensile strength, 430 MPa due to precipitation strengthening ofβ(Mg17Al12) phase and Al11RE3 phase. At the elevated temperature, the mechanical property of AZ91 +3 wt%Mm alloy was higher than those of other Mg alloys. The reasons were that Al11La3 phase was thermally stable and suppressed the grain growth. In contrast with Al11La3 phase, β phase was thermally unstable and could not suppress the grain growth at the elevated temperature. Therefore, Al11RE3 phase contributed to improve the thermal stability of RS AZ91 alloy.
노루궁뎅이 버섯균사체를 이용한 비타민나무 발효물이 생체고분자의 산화적 변형과 세포사멸에 미치는 보호 영향
김승섭(Seung-Sub Kim),경인구(Inn-Goo Kyeong),이미라(Mi-La Lee),김동구(Dong-Goo Kim),신지영(Ji-Young Shin),양진이(Jin-Yi Yang),이광호(Gwang-Ho Lee),음원식(Won-Sik Eum),강정훈(Jung-Hoon Kang) 한국식품영양과학회 2015 한국식품영양과학회지 Vol.44 No.1
본 연구에서는 노루궁뎅이 버섯균사체를 비타민나무 잎에 배양하여 조제한 노루궁뎅이 버섯균사체-비타민나무 발효물 열수 추출물이 생체고분자의 산화적 손상과 세포사멸을 보호할 수 있는지를 관찰하였다. 노루궁뎅이 버섯균사체-비타민나무 발효물의 항산화 활성을 DPPH radical, ABTS radical, peroxyl radical 소거활성 측정을 통해 알아보았다. 그 결과 노루궁뎅이 버섯균사체-비타민나무 발효물을 처리한 DPPH radical 소거활성은 500 μg/mL 농도에서 65.06%, ABTS radical 소거활성은 50 μg/mL 농도에서 98.83%, peroxyl radical 소거활성은 100 μg/mL 농도에서 44.03%로 높은 항산화 활성을 나타내었다. 노루궁뎅이 버섯균사체-비타민나무 발효물은 DNA의 산화적 손상을 효과적으로 억제하였다. 노루궁뎅이 버섯균사체-비타민나무 발효물 역시 사람의 혈청단백질과 Cu,Zn-SOD의 산화적 손상을 억제하였다. 세포에 H₂O₂를 처리하였을 때 세포생존율에 비하여 발효물을 100 μg/mL 농도로 전 처리한 세포생존율은 21.59% 높게 증가되었다. 또한 발효물을 50 μg/mL 농도로 처리했을 경우 세포 내 ROS의 축적이 유의적으로 감소되었다. 따라서 노루궁뎅이 버섯균사체-비타민나무 발효물은 항산화 활성뿐만 아니라 산화적 스트레스에 의해 야기되는 세포 독성에 대한 보호 작용이 뛰어난 것으로 사료된다. In this study, hot water extract from sea buckthorn (Hippophae rhamnoides L.) leaves fermented with Hericium erinaceum mycelium (SBT-HE) was assessed for protection against oxidative modification of biological macromolecules and cell death. Antioxidant activity of SBT-HE was evaluated based on 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical, 2,2"-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical, and peroxyl radical scavenging assays. SBT-HE showed 65.06% DPPH radical scavenging activity at 500 μg/mL, 98.83% ABTS radical scavenging activity at 50 μg/mL, and 44.03% peroxyl radical scavenging activity at 100 μg/mL. SBT-HE significantly inhibited DNA strand breakage induced by peroxyl radical. SBT-HE also prevented peroxyl radical-mediated human serum albumin modification. SBT-HE effectively inhibited H2O2-induced cell death and significantly increased cell survival by 21.59% at 100 μg/mL. SBT-HE also reduced intracellular reactive oxygen species levels in H₂O₂-treated cells. The results suggest that SBT-HE can contribute to antioxidant activity and protect cells from oxidative stress-induced cell injury.
Fungal Osteomyelitis of Temporomandibular Joint and Skull Base Caused by Chronic Otitis Media
Kim, Bok Eum,Park, Keun Jeong,Lee, Jung Eun,Park, YounJung,Kwon, Jeong-Seung,Kim, Seong-Taek,Choi, Jong-Hoon,Ahn, Hyung-Joon Korean Academy of Orofacial Pain and Oral Medicine 2020 Journal of Oral Medicine and Pain Vol.45 No.1
Chronic otitis media (COM) is a chronic inflammatory disease which affects the middle ear, mastoid cavity. It presents hearing loss, ear pain, dizziness, headache, temporomandibular joint (TMJ) inflammation and intracranial complication. Intracranial complications such as skull base osteomyelitis (SBO) may occur secondary to COM due to transmission of infection by a number of possible routes. SBO is an uncommon condition with a significant morbidity and mortality if not treated in the early stages. We report a-67-year-old male patient with diabetes and untreated COM who presented atypical severe TMJ, periorbital and postmandibular pain. By computerized tomography (CT), magnetic resonance imaging (MRI) and whole body bone scan (WBBS), he was diagnosed with SBO spreading from untreated COM via infective arthritis of TMJ. Through this case, we suggest proper utilization of diagnostic imaging, especially CT or MRI for the early detection of SBO in the case of COM accompanying with the greater risk of infection developments such as diabetes.