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Go, Da-Hyeon,Jeon, Hee-Jeong,Kim, Tae-Hwan,Kim, Geun-Seok,Choi, Jin-Hee,Lee, Jae-Yeol,Kim, Jung-Ahn,Yoo, Hyun-Oh,Bae, You-Han The Polymer Society of Korea 2008 Macromolecular Research Vol.16 No.7
A new and useful poly(ethylene oxide)-based pH-sensitive block copolymer is introduced. Poly(ethylene oxide-b-N-phenylmaleimide) was first synthesized by anionic polymerization of N-phenylmaleimide (N-PMI) using mixed alkali metal polymeric alkoxide by sequential monomer addition method in the mixture of benzene/THF/DMSO (10/5/3, v/v/v) at room temperature. Reductive deimidation of the resulting block copolymer was performed using hydrazine monohydrate leading to the formation of the corresponding pH-sensitive poly(ethylene oxide-b-maleic acid).
하지수술에서 Ropivacaine-Fentanyl 경막외마취시 첨가한 Clonidine의 용량에 따른 효과
고우석,정종달,안태훈,유병식,임경준,소금영,이현영 대한마취과학회 2002 Korean Journal of Anesthesiology Vol.43 No.4
Background: Ropivacaine is an amino amide local anesthetic that has an advantage of a low-toxicity profile. Clonidine, an α_2 adrenergic agonist, is known to prolong and intensify anesthesia from epidural local anesthetics. The aim of this study was to evaluate the dose-response effects of added clonidine to ropivacaine-fentanyl epidural anesthesia for lower extremity surgery. methods: Forty-five patients undergoing lower extremity surgery were randomly allocated to three groups to be given the following agents by and epidural route: 0.75% ropivacaine 15 ml + fentanyl 50 ㎍ (group Ⅰ), 100 ㎍ (group Ⅱ), or 150 ㎍ (group Ⅲ). Onset and maximal height of sensory block, and duration of sensory and motor block were assessed. Also, blood pressure, heart rate and sedation score were measured. Results: Duration of sensory and motor block of groups Ⅱ and Ⅲ was significantly longer than that of group Ⅰ, but there was no difference between group Ⅱ and group Ⅲ. Two segment regression times were significantly different among the three groups. Onset of sensory block, blood pressure, heart rate, and sedation scores were not significantly different among the three groups. Conclusions: The addition of Clonidine 100 and 150 ㎍ prolonged duration of anesthesia more than 50 ㎍ with ropivacaine-fentanyl epidural anesthesia for lower extremity surgery. (Korean J Anesthesiol 2002; 43: 429~435)
( Chaiwat Monmai ),( Seok Hyeon Go ),( Il-shik Shin ),( Sangguan You ),( Hyungjae Lee ),( Seokbeom Kang ),( Woo Jung Park ) 한국미생물생명공학회(구 한국산업미생물학회) 2018 Journal of microbiology and biotechnology Vol.28 No.3
Asterias amurensis is a marine organism that causes damage to the fishing industry worldwide; however, it has been considered a promising source of functional components. The present study aimed to investigate the immune-enhancing effects of fatty acids from three organs of A. amurensis on murine macrophages (RAW 264.7 cells). A. amurensis fatty acids boosted production of immune-associated factors such as nitric oxide (NO) and prostaglandin E2 in RAW 264.7 cells. A. amurensis fatty acids also enhanced the expression of critical immuneassociated genes, including iNOS, TNF-α, IL-1β, and IL-6, as well as COX-2. Western blotting showed that A. amurensis fatty acids stimulated the NF-κB and MAPK pathways by phosphorylation of NF-κB p-65, p38, ERK1/2, and JNK. A. amurensis fatty acids from different tissues resulted in different levels of NF-κB and MAPK phosphorylation in RAW 264.7 cells. The results increase our understanding of how A. amurensis fatty acids boost immunity in a physiological system, as a potential functional material.
( Chaiwat Monmai ),( Seok Hyeon Go ),( Il-sik Shin ),( Sangguan You ),( Dae-ok Kim ),( Seokbeom Kang ),( Woo Jung Park ) 한국미생물생명공학회(구 한국산업미생물학회) 2018 Journal of microbiology and biotechnology Vol.28 No.10
Asterias amurensis (starfish) is a marine organism that is harmful to the fishing industry, but is also a potential source of functional materials. The present study was conducted to analyze the profiles of fatty acids extracted from A. amurensis tissues and their anti-inflammatory effects on RAW264.7 macrophage cells. In different tissues, the component ratios of saturated fatty acids, monounsaturated fatty acids, and polyunsaturated fatty acids differed; particularly, polyunsaturated fatty acids such as dihomo-gamma-linolenic acid (20:3n-6) and eicosapentaenoic acid (20:5n-3) were considerably different. In lipopolysaccharide-stimulated RAW264.7 cells, fatty acids from A. amurensis skin, gonads, and digestive glands exhibited anti-inflammatory activities by reducing nitric oxide production and inducing nitric oxide synthase gene expression. Asterias amurensis fatty acids effectively suppressed the expression of inflammatory cytokines such as tumor necrosis factor-α, interleukin-1β, and interleukin-6 in lipopolysaccharide-stimulated cells. Cyclooxygenase-2 and prostaglandin E2, which are critical inflammation biomarkers, were also significantly suppressed. Furthermore, A. amurensis fatty acids reduced the phosphorylation of nuclear factor-κB p-65, p38, extracellular signal-related kinase 1/2, and c-Jun N-terminal kinase, indicating that these fatty acids ameliorated inflammation through the nuclear factor-κB and mitogen-activated protein kinase pathways. These results provide insight into the anti-inflammatory mechanism of A. amurensis fatty acids on immune cells and suggest that the species is a potential source of anti-inflammatory molecules.
두꺼비(Bufo bufo gaugauizans) 주요 산란지인 섬진강 일대 저수지의 보전과 관리에 관한 연구
정진석 ( Jin-seok Jeong ),노선호 ( Sun-ho No ),고준서 ( Jun-seo Go ),신세영 ( Se-young Shin ),이정은 ( Jeong-eun Lee ),최한이 ( Han-yi Choi ),채주리 ( Ju-ri Chae ),신규철 ( Gyu-cheol Shin ),유영한 ( Young-han You ) 한국환경생태학회 2016 한국환경생태학회 학술대회지 Vol.2016 No.2
조섬진강 일대에 서식하는 두꺼비 및 두꺼비서식처의 보호방안을 모색하고자 두꺼비 모니터링을 실시하였다. 연구지역은 하동군 악양면 일대로 총 14개의 습지가 발달해 있다. 그 중 노전소류지, 정서제, 입석상제 등 6개 지점에서 두꺼비가 산란하였다. 텃개소류지, 중간소류지 등 3개 지점은 매립되어 산란지 기능을 상실하였다. 용정소류지, 신대제 등 2개 지점은 두꺼비의 번식기인 2~4월 동안 일정수준의 저수량을 유지하지 못하여 두꺼비가 산란하지 않았다. 봉대천 하류, 동정호, 입덕하제 등 3개 지점은 일정수준의 저수량을 유지하였으나, 두꺼비가 산란하지 않았다. 연구결과 두꺼비의 주요 위협시기는 성체 두꺼비의 이동기인 2월과 아성체 두꺼비의 이동기인 5월로 분석되었으며, 이는 로드킬로 인한 피해가 컸다. 한편, 두꺼비 산란의 주요 위협요인은 산란지의 감소 및 축소이다. 두꺼비는 이동성이 낮고, 생태특성상 산란지의 환경변화에 크게 영향을 받았다. 두꺼비가 산란할 수 있는 저수지가 매립되거나, 두꺼비의 주요번식기동안 일정수준의 수량을 유지하지 못하는 경우, 그해에는 두꺼비의 번식이 불가능했다. 따라서 이를 해결할수 있는 근본적인 방안으로 두꺼비의 산란지로서 저수지의 보전과 관리가 필요하다.
프로테아제, 자일라나제, 만나아제의 첨가가 비육돈의 성장, 혈액성상 및 생산성에 미치는 영향
고대건(Dae-Geon Go),이용기(Yong-Gi Lee),유기명(Ki-Myeong Yoo),선현수(Hyen-Su Seon),윤진혁(Jin-Hyeok Yoon),윤상(Sang Yoon),김승연(Seung-Yeon Kim),유형주(Hyeong-Ju You),김민석(Min-Seok Kim),이지웅(Ji-Woong Lee),강만종(Man-Jong Kang) 한국산학기술학회 2021 한국산학기술학회논문지 Vol.22 No.10
본 연구에서는 비육돈 기초사료에 Protease, Xylanase 및 Mannanase를 포함한 복합효소제를 첨가하였을 때 육성돈의 성장 및 경제성에 미치는 영향에 대하여 조사하기 위하여 실시하였다. 실험을 위하여 평균체중 37.48 ± 5.43kg인 비육돈(Landrace × Yorkshire × Duroc) 1478 두를 공시하여 3반복하고, 반복 당 대조구는 평균 256 두, 처리구는 평균 236 두씩 완전임의 배치하였다. 처리구는 Protease + Xylanase + Mannanase 0.1 % 처리하여 출하체중 약 115 kg까지 사양실험을 실시하였다. 사양성적에 있어 일당증체량은 처리구와 대조구에서 각각 784.62 ± 17.42와 대조구 749.39 ± 10.48로 처리구에서 유의적으로 개선되었다(p >0.05). 사료섭취량에서는 처리구간 유의차는 없었지만 (p >0.05) 사료요구율에서 대조구 0.355 ± 0.01, 처리구 0.365 ± 0.01로 처리구에서 유의적으로 개선되었다(p <0.05). 혈액 성상에서는 Protease, Xylanase 및 Mannanase 첨가구가 대조구에 비해 Total protein 함량이 유의적으로 높게 나타났다(p <0.05). 경제성 분석에서는 두당 증체량(total weight gain)과 1 두당 돈가(total pig prices)의 경우 처리구에서 대조구보다 개선되는 경향을 보였지만 유의적 차이는 없었다(p >0.05). 1등급 이상 돼지 출현율(Prevalence of grade 1 or higher)은 처리구와 대조구에서 각각 57.41 ± 0.4, 49.54 ± 4.92로 처리구에서 유의적으로 개선되었다(p <0.05). 본 실험의 결과로 보아 Protease, Xylanase 및 Mannanase를 포함한 복합효소제를 비육돈 기초사료에 첨가하는 것은 돼지의 성장을 촉진하여 생산성 및 경제성이 개선하고 혈액 내 단백질함량을 증가시키는 것으로 나타난다. This study was conducted to investigate the effect of supplementation with an enzyme complex including protease, xylanase, and mannanase to the basal diets of pigs on their growth performance and economic value. A total of 1478 cross-bred-fed pigs (Landrace × Yorkshire × Duroc) of 37.48 ± 5.43 kg (average BW) were randomly assigned to one of these treatment groups with 3 repetitions. Breeding experiments of the group supplemented with 0.1 % enzyme complex were conducted by attaining a bodyweight of about 115 kg. Growth performance improved significantly with supplementation treatment compared to the basal diet showing an average daily gain of 749.39 ± 10.48 and 784.62 ± 17. 42 (p >0.05). The feed conversion ratio significantly improved in the supplemented groups at 0.365 ± 0.01 compared with 0.355 ± 0.01 in non-supplemented groups (p <0.05). An analysis of blood composition showed that the total protein in the treatment group was significantly higher than the control (p <0.05). Total weight gain and
Preparation of GF37 for the improvement of respiratory inflammation
Ju Yeong So,Min Jung Kim,Go Woo Choi,You Jin Lee,Yun Ho Jo,Sejeong Kim,Danhui Kim,Sang Hun Lee,Een Yeong Park,Dae Seok Yoo,Jin Seong Kim,Sang Won Cho,Young Soo Kim,Hak Joo Choi,Mi Kyung Pyo 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
Panax ginseng (PG) and Perilla frutesens (PF) leaves have antioxidant and anti-inflammatory action, which can alleviate various diseases caused by fine dust. Therefore, the purpose of this study is to find the optimal ratio of ginseng and perilla leaves to maximize the anti-inflammatory action. PG and PF were extracted three times for 6 h at 70℃ with 70% ethanol and concentrated in vacuum, respectively, and then powdered by spray dryer. PG:PF were each made at different ratios to make 9 samples; CHJ1 (1:9), CHJ2 (2:8), CHJ3 (3:7), CHJ4 (4:6), CHJ5 (5:5), CHJ6 (6:4), CHJ7 (7:3), CHJ8 (8:2), CHJ9 (9:1). Each sample was measured TNF-a, IL-6, and ROS against fine dust (PM10) using MH-S cells. Among the 9 mixed samples, CHJ2 and CHJ3 inhibited the inflammation and oxidative stress induced by fine dust the best. In a confirmation experiment comparing these samples with PG and PF samples, the CHJ2 sample was finally selected because it had the best anti-inflammatory and antioxidant effects at a low concentration. Finally, a CHJ2 sample in which PG and PF were mixed in a 3:7 ratio was selected as a material for improving respiratory inflammation, and was named GF37.