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조직배양에 의한 반하〔Pinellia ternata(Thunb.) Briet〕의 대량번식에 관한 연구
崔定植,羅義植 韓國作物學會 1986 Korean journal of crop science Vol.31 No.1
반하〔Pinellia ternata(Thunb.) Briet〕의 조직을 기내배양하여 callus 유기, 기관분화 및 자구를 증식시키는데 적합한 배지와 배양부위를 선정코저 Mur-ushige & Skoog 배지에 2,4-D와 kinetin의 첨가량을 달리하여 검토하였고 또한 배양온도 및 배지의 pH 영향을 조사하였던 바 그 결과를 요약하면 다음과 같다. 1. Callus 유기는 배양 5~7일 후에 엽조직 및생장점조직의 절단면에서 관찰할 수 있었으며 2,4-D 2.0mg/ +kinetin 0.2mg/ 을 첨가한 구에서 callus의 형성 및 생장이 가장 양호하였다. 2. 자구의 형성은 엽조직 및 생장점조직을 2,4 -D 2.0mg/ +kinetin 0.2mg/ 또는 2.4-D 2.0g/ +kinetin 2.0mg/ 을 첨가한 배지에서 양호하였고 근 및 괴경조직에서는 자구가 전혀 ?성되지 않았다. 3. 엽의 부위별 자구형성능력은 Petiole이 자구형성수, 크기, 엽면적 및 생체중에 있어서 marginal meristem, minor vein area 및 intercostal area 보다 양호하였다. 4. 경의 부위별 자구형성능력은 상부위 조직일수록 자구의 형성수 크기, 엽면적 및 생체중이 양호하였으나 하부위일수록 불량하였다. 5. 배양온도는 25℃ 에서 callus 유기, 크기 및 생체중이 가장 양호하였다. 6. 배지의 pH는 4.5~7.5에서 모두 callus가 유기되었으나 그중 pH 6.0 배지에서 가장 양호하였다. 7. 재생되는 식물체 일부가 광엽화되는 경향이었으며 소수의 albino 식물체와 변이체도 관찰할 수 있었다. In order to find out the best media, explants and environmental conditions for induction of calluses and organogeneses of Pinellia ternata (Thunb.) Breit in vitro, various parts of adult have been cultured on Murashige & Skoog's medium containing various levels of 2,4-dichlorophenoxy acetic acid(2,4-D) and kinetin. The results obtained were as follows: Calluses were induced from the surface of apical meristem and leaf tissue. Formation and growth of calluses in petiole ex plants were best on the MS medium complemented with 2,4-D 2.0 mg/l and kinetin 0.2mg/l. But callus formation in stem ex plants of the nearest tuber was not induced at all kinds of media. Plantlets occured at all treatment except absence of growth regulator. Their numbers, size, leaf and fresh weight were promoted by 2,4-D 2.0mg/l and kinetin 0.2mg/l. Root growth was increased on the medium containing higher 2,4-D concentrations. Size and fresh weight of callus were increased at 25~circC compared with 10, 20 and 30~circC , respectively. Optimal pH value was at 6.0 for growth of callus. Morphological aberrations were observed in plantlets, especially in regenerated leaves. The separation of the broad leaved plantlets and albino were observed in some cultures. Growth of plantlets after transplantation was best in pots with the sterilized vermiculte. But abnormal variants withered up.
半夏의 組織培養에 關한 硏究 : II.器官分化의 組織學的 硏究 II.Histological Studies on the Organ Differentiation
崔定植,羅義植,金永斗,韓光洙 전북대학교 농업과학기술연구소 1986 農大論文集 Vol.17 No.-
This study was carried out to investigate the histological origin of callus, clone, shoot, and root of Pinellia ternata(Thunb.) Breit, known as a medicinal crop. The results obtained were as follows: 1. Callus was induced from the cutted section of leaf tissue. 2. Shoot formed from the subepidermis of leaf explant. 3. Adventitious root were formed from callus tissue or base of shoots. 4. Contractile root forming root primodium was normal structure. 5. Shoot primodium was formed fast better than root primodium from meristemoid.
후천면역결핍 증후군 관련 진행성 다초점 백색질 뇌증에서 항레트로바이러스 치료로 유발된 면역재구성증후군 1예
주성훈,김태형,나정식,송호섭,유인규,윤희정 대한감염학회 2010 감염과 화학요법 Vol.42 No.3
Progressive multifocal leukoencephalopathy (PML) is a demyelinating disease of the central nervous system due to JC virus. In acquired immunodeficiency syndrome (AIDS) patients, JC virus infects myelin-producing oligodendrocytes causing a noninflammatory lytic reaction leading to demyelination and brain death. We herein report a case of a 56-years-old AIDS man who developed immune reconstitution inflammatory syndrome and died while undergoing highly active antiretroviral therapy. In this patient, the PML involved the brainstem, causing mental confusion followed by recurrent aspiration, adult respiratory distress syndrome, and eventually to early death.
주성훈,김태형,나정식,송호섭,유인규,윤희정 대한감염학회 2010 Infection and Chemotherapy Vol.42 No.3
Progressive multifocal leukoencephalopathy (PML) is a demyelinating disease of the central nervous system due to JC virus. In acquired immunodeficiency syndrome (AIDS) patients, JC virus infects myelin-producing oligodendrocytes causing a noninflammatory lytic reaction leading to demyelination and brain death. We herein report a case of a 56-years-old AIDS man who developed immune reconstitution inflammatory syndrome and died while undergoing highly active antiretroviral therapy. In this patient, the PML involved the brainstem, causing mental confusion followed by recurrent aspiration, adult respiratory distress syndrome, and eventually to early death.
Vav3, a GEF for RhoA, Plays a Critical Role under High Glucose Conditions
Jie Sha,나정식,이정옥,김남이,이수경,김지혜,문지욱,김수진,이혜정,최종일,박선화,김현수 대한내분비학회 2014 Endocrinology and metabolism Vol.29 No.3
Background: The role of small GTPase molecules is poorly understood under high glucose conditions. Methods: We analyzed the expression pattern of Vav3 in skeletal muscle C2C12 cells under high glucose culture condition with reverse transcription-polymerase chain reaction and Western blot analysis. We also measured glucose uptake using isotope-labelled glucose. Results: We showed that expression of Vav3 (a guanine nucleotide exchange factor for RhoA) increased. mRNA and protein levels in skeletal muscle C2C12 cells under high glucose conditions. The AMP-activated protein kinase (AMPK) activator AMPK agonist 5-aminoimidazole-4-carboxy-amide-1-d-ribofuranoside (AICAR) suppressed high glucose-induced Vav3 induction. In addition, exposure of cells to high glucose concentration increased the phosphorylation of PAK-1, a molecule downstream of RhoA. The phosphorylation of paxillin, a downstream molecule of PAK-1, was also increased by exposure to high glucose. Phosphorylation of these molecules was not observed in the presence of AICAR, indicating that AMPK is involved in the RhoA signal pathway under high glucose conditions. Knock down of Vav3 enhances metformin-mediated glucose uptake. Inhibition of AMPK blocked the increases of Vav3 knock down-induced glucose uptake. Metformin-mediated Glut4 translocation was also increased by Vav3 knock-down, suggesting that Vav3 is involved in metformin-mediated glucose uptake. Conclusion: These results demonstrate that Vav3 is involved in the process of metformin-mediated glucose regulation.
문영훈(Young Hun Moon),오동훈(Dong Hoon Oh),최정식(Joung Sik Choi),나종성(Jong Seong Na),한성수(Seong Soo Han) 한국환경농학회 1998 한국환경농학회지 Vol.17 No.4
This experiment was conducted to investigate the effects and properties of organic materials, the fermented fowl droppings composts and the top viviparous malleatuses, utiliaable for rice farming. At the 35th day after transplanting, the growth of rice plants was good in the order of organic farming, combined farming, conventional farming, and control plot. But stem number and dry weight of rice plant in organic farming decreased a little compared to those in conventional farming at the 65th day after transplanting. Rice yield decreased by 7% in organic farming and by 4% in combined farming compared to those of conventional farming. Weeding effect by inoculation of 5㎏ or 10㎏ of the top viviparous malleatuses per 10a was similarly 96% at the immediately inoculation after transplanting, 98.6% at the 7th days inoculation after transplanting and 70% at the 15th days inoculation after transplanting. By inoculation of 5㎏ per 10a at the 7th day and the 15th day after transplanting, rice yields decreased by 2% and 5%, respectively, compared to those of the conventional farming method. From the above results, it seems that the organic farming and the combined farming are useful and the inoculation of the top viviparous malleatuses is effective for control of weeds as the environmental preservation farming.