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습사료에 첨가한 유용미생물 및 한약재 혼합제(한방천ㆍ어력천) 특성과 혼합 첨가제가 넙치간의 활성에 미치는 효과
여인규,노섬,Yeo, In-Kyu,Rho, Sum 한국양식학회 2004 韓國養殖學會誌 Vol.17 No.2
유용 미생물과 한약재가 포함된 새로운 사료첨가제의 다양한 농도(0.3, 0.6 및 0.9%)에 따른 넙치의 간기능의 활성에 미치는 영향 및 사료첨가제의 특성에 대해서도 조사하였다. 첨가제에 포함된 유용미생물(유산균, 바실러스균, 효모 및 광합성균)의 총수는 한방천이 5.6${\times}$$10^{8}$ CFU/g이었으며, 어력천은 3.0${\times}$$10^{8}$ CFU/g 이었다. 앙식에 일반적으로 사용되는 습사료의 병원미생물(Edwardsiella tarda, Vibrio anguillarum and Streptorwccus sp.)은 모든 첨가군에 있어서 첨가제의 농도의존적으로 유의한 감소를 나타내었다. 간중량 지수는 0.3%의 첨가군에서 유의하게 증가하였다. 혈중의 단백질량은 모든 첨가군이 유의한 증가를 나타내었으나. 간장내의 단백질량은 대조군이 높은 수치를 나타내었다. 생체방어기작을 하는 catalase 및 superoxide dismutase는 0.3% 및 0.6% 첨가군에서 각각 높은 활성을 나타내었다. 이상의 결과로 한약재와 유용미생물 혼합 사료첨가제의 사용으로 넙치의 항산화효소의 활성을 증대시켜 어류스트레스의 면역증대를 기대할 수 있을 것으로 여겨진다. The effects of different concentrations (0, 0.3, 0.6 and 0.9%) of fish feed additives (Hanbangchun and Olyukchun) utilizing effective microorganisms and herb medicine on activity of liver function were examined in olive flounder, Paralichthys olivaceus, Moreover, we investigated the characteristics of the additives. Total number of microorganisms (Lactic acid bacteria, Bacillus subtilis, Saccharomyces cerevisiae, Photosynthetic bacteria and Azotobactor) in the additives was 5.6${\times}$10$^{8}$ CFU/g in the Hanbangchun and 3.0${\times}$10$^{8}$ CFU/g in the Olyukchun. Levels of three typical pathological microorgamisms (Edwardsiella tarda, Vibrio anguillarum and Streptococcus sp.) in moist pellets (MP) were significantly decreased by the additives in a concentration-dependent way. Hepatosomatic index of fish in the 0.3% group was significantly increased. Total serum protein was increased in all the groups containing additives, but the protein content in liver was higher in the control group. Higher activities of catalase and superoxide dismutase which are involved in physiological defense mechanisms were found in the dietary groups containing 0.3% and 0.6%, respectively. These results suggest that the additives, Hanbangchun and Olyukchun, can increase tolerance of olive flounder against stress and hypoxic conditions by increasing activities of body antioxidant enzymes.
여인규,임현택,임종빈,정성호,Yeo, In Kyu,Lim, Hyun Taek,Lim, Jong Bin,Jeong, Sung Ho 한국레이저가공학회 2013 한국레이저가공학회지 Vol.16 No.1
For numerical simulation of the deformation and residual stress development in metals during laser peening, the constitutive equations describing material behavior at various strain rates and plastic properties at high strain rate impact conditions are prerequisite. However, these parameters are often unknown for various engineering materials. In this study, the parameters of Johnson-Cook constitutive equation of duplex stainless steel were determined by comparing the residual stress profile predicted by numerical simulation using trial values and the measured residual stress profile with x-ray diffraction.
넙치 Paralichthys olivaceus 초대 배양 간세포의 난황 전구물질 합성에 미치는 estradiol-$17{\beta}$와 2,4-D의 영향
여인규,최미경,이영돈,임윤규,허문수,이제희,송춘복,Yeo, In-Kyu,Choe, Mi-Kyung,Lee, Young-Don,Lim, Yoon-Kyu,Heo, Moon-Soo,Lee, Je-Hee,Song, Choon-Bok 한국어류학회 2000 韓國魚類學會誌 Vol.12 No.3
Estradiol-$17{\beta}(E_2)$와 2,4-dichlorophenoxy acetic acid (2, 4- D)가 난황 전구물질의 합성에 미치는 영향을 넙치 Paralichthys olivaceus 간세포의 초대 배양을 통하여 조사하였다. 배양간세포의 생존율은 배양온도 $27^{\circ}C$에 서 가장 높게 나타났으며, $15^{\circ}C$에서는 생존율이 급격히 감소하여 약 50%의 생존율을 나타내었다. $E_2$에 의한 VTG 의 합성은 $10^{-6}M$에서 최대치를 나타내었다. 2, 4-D $10^{-7}\sim10^{-5}M$의 첨가에 의해 VTG의 합성은 이루어지지 않았다. 그러나, 저농도인 $10^{-8}M$에서는 VTG의 합성이 증가하였다. $E_2$ 및 2, 4-D에 의해 합성된 VTG는 $10^{-6}M$ tamoxifen의 첨가에 의해 유의하게 억제되었다 (P<0.01). 본 연구 결과에서 $E_2$와 2, 4-D의 동시 첨가는 VTG의 합성을 억제하지 않았다. 이러한 결과는 2, 4-D의 작용이 $E_2$와 유사한 작용을 가지지만, VTG의 합성에 있어서 $E_2$ 수용체에의 작용 양식은 서로 다른 것으로 추정된다. Effects of Estradiol-$17\beta(E_2)$ and 2, 4-dichlorophenoxy acetic acid (2, 4-D) on vitellogenin(VTG) production were investigated in primary hepatocyte culture of olive flounder, Paralichthys olivaceus. Highest survival rate of hepatocyte were observed at $27^{\circ}C$, which markedly declined equal to 50% of those of $15^{\circ}C$. Vitellogenin production peaked at the concentration of $10^{-6}M\;E_2$. No effect was observed on VTG production at various concentrations of 2, 4-D. However, a low concentration of 2, 4-D (ie, $10^{-8}M$) only appeared increased VTG production. $E_2$ or $10^{-8}M$ 2, 4-D-primed VTG production was markedly inhibited by the addition of $10^{-6}M$ tamoxifen to the culture medium(P<0.01). Inhibition was not affected by combinational treatment with $10^{-6}M$ $E_2$ and $10^{-6}M$ 2, 4-D. These results from the current investigation suggest that 2, 4-D mimics $E_2$, but the mechanism of reaction in inducing the $E_2$ receptor are different in VTG production in oliver flounder hepatocytes.
쏨뱅이, Sebastiscus marmoratus의 vitellogenin 단클론 항체생산 및 특성에 관한 연구
김영주 ( Young Ju Kim ),임윤규 ( Yoon Kyu Lim ),여인규 ( In Kyu Yeo ) 한국어병학회 2013 한국어병학회지 Vol.26 No.3
In order to establish bio-marker systems for the screening of endocrine-disrupting chemicals contaminated in various environment, Vitellogenin(Vtg) bio-marker have been developed to detect Scorpion fish`s(Sebastiscus marmoratus) Vtg. Vtg has been induced by administration of estradiol into S. marmoratus, and purified by gel filtration and ion-exchange chromatography from serum of the fish. After immunization of the purified Vtg into BALB/c mouse, hybridomas secreting anti-Vtg antibodies have been produced. The size of induced Vtg in the serum was about 440 kDa by gel filtration using Sepharose CL-6B. By SDS-PAGE analysis, the main band of Vtg, however, was at 175 kDa, and several minor bands have been detected with the main band. Eight different monoclonal antibodies have been produced from established hybridomas and the antibodies did not cross-react with sera from different species of fishes tested in this study except with that of Sebastes hubbsi. These results suggested that the monoclonal antibody of S28 and S15 can used as capture and tracer antibodies for ELISA and ICG assays. The detection systems developed in this study can be used as Bio-marker assays to check endocrine disrupting activity of various chemicals as well as to detect known endocrine disrupting chemicals contaminated in environment.
사료 내 마늘 추출액 첨가가 넙치(Paralichthys olivaceus)의 비특이적 면역반응 및 질병저항성에 미치는 영향
김승민 ( Seung Min Kim ),전려진 ( Lyu Jin Jun ),여인규 ( In Kyu Yeo ),전유진 ( You Jin Jeon ),이경준 ( Kyeong Jun Lee ),정현도 ( Hyun Do Jeong ),정준범 ( Joon Bum Jeong ) 한국어병학회 2014 한국어병학회지 Vol.27 No.1
In this study, we investigated the effects of dietary 1% garlic extract on nonspecific immune responses and fish diseases (Viral Hemorrhagic Septicemia Virus, Vibrio anguillarum, Streptococcus iniae and Edwardsiella tarda) resistance in olive flounder Paralichthys olivaceus. Fish were fed a commercial diets supplemented with 1% garlic extract for 4 weeks. After the 4 weeks feeding experiment, the artificial infection was made by V. anguillarum, S. iniae, E. tarda and VHSV. And the cumulative mortality was monitored for 2 weeks after artificial infection. The cumulative mortalities decreased in all experiments except for group of E. tarda compared to control group. We observed significantly higher levels of the hematocrit, glucose, total protein, lysozyme activity and the macrophage activity in the experimental group compared to the control group. In the experiments of drug sensitivity and MIC using the three bacteria (V. anguillarum, S. iniae and E. tarda), 1% garlic extract was more effective than the previously reported fermented garlic powder. These results suggested that garlic extract can increase the disease resistance of olive flounder against V. anguillarum, S. iniae and VHSV and the ability of nonspecific immune responses.