• 한국자원식물학회지
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• 제20권5호
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• pp.389-397
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• 2007

벼의 캘러스를 대상으로 Tos17 활성 증가를 이용하여 새로운 돌연변이체의 유발 및 선발에 대한 연구는 많이 시도되어 왔다. 일품벼에서 배양된 캘러스를 이용하여 배양기간 및 배양조건에 따른 retrotransposon(Tos17)의 활성화를 유도함을 일차적인 목적으로 하고, 이에 따른 재분화 개체를 통하여 다양한 돌연변이체($M_1$)를 얻음과 동시에 세대의 진전에 따른 돌연변이체($M_2$, $M_3$)가 나타내는 표현형과 Tos17과의 연관성을 확인하여 특정 유전자의 cloning을 향후 목적으로 하고 있다. 1. 본 연구에서는 배양기간에 따라 총 371개체의 $M_1$ 돌연변이체를 얻었다. 2. 각각의 배양기간 단계별 재분화 식물체에서 얻어진 Tos17의 활성정도를 나타내는 Southern blot의 결과 normal 즉, 기본 식물인 일품벼는 5개의 copy수를 가지고 있는 것을 알 수 있었으며, 1개월 7개, 2개월 8개, 3개월 9.5개, 5개월 12개, 6개월 6개, 7개월 13.5개, 8개월 17.5개의 band를 확인할 수 있었다. 3. Tos17의 Southern blot의 결과, $3{\sim}5$개월의 배양기간이 경과해야만 기본 copy의 2배수로 Tos17이 활성화됨을 알 수 있었다. 향후 $M_1$돌연변이체의 세대진전을 통하여 $M_2$, $M_3$ 세대 등의 다양한 재조합 개체의 확보 및 분석이 중요하다. 또한 다양한 형태로 원하는 돌연변이를 선발하는 screening 방법을 개발하는 것이 시급하고 중요한 과제이다.

• 한국식물생명공학회:학술대회논문집
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• 한국식물생명공학회 2004년도 생명공학 실용화를 위한 비젼
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• pp.159-159
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• 2004

• 한국경영과학회지
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• 제35권2호
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• pp.1-17
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• 2010

This paper aims to compare four operating priority rules of RMGC (Rail Mounted Gantry Crane) used in semi-automated container terminal. The four priority rules employed in this paper are FCFS (First-come-first-served), LCFS (Last-come-first-served), TOS (Turn-over-served) and NFS (Nearest-first-served). And to compare the four operating priority rules, this paper analyzed productivity of RMGC and CC (Container Crane), waiting time of YT (Yard Truck) and RT (Road Truck) in container yard, and turnaround time of RT in container terminal of each priority rule by using stevedoring simulation. As a result, NFS was evaluated as the best rule to improve the overall productivity of container terminal in terms of all criteria.

• 대한정형도수물리치료학회지
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• 제3권1호
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• pp.17-27
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• 1997

The PT program provides relief to most patients with symptom of TOS. So the purpose of our study is to evaluate a effects of PT program in patients with TOS. PT program included orthopaedic manual therapy with the aim of restoring the function of the upper thoracic aperture is to be recommended, and long-term following is advisable. 1. Mean treatment duration was over an 11.4 day(range 4~24). 2. At the follow-up evaluation, 88.1% of the patients were satisfied with the effects of their therapy. 3. 73% of the patients returened to work after PT and 88% of the patients carried through the recommendations given at discharge during follow up. 4. Normalized grip strength and Tinel' sign predicted patient satisfaction(p< .001) and return to work(p< .001). 5. Return to work was more often successful if the work was sedentary rather than heavy (p< .05).

• The Journal of Korean Physical Therapy
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• 제17권2호
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• pp.107-125
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• 2005

The term of TOS(thoracic outlet syndrome) is used to describe patients with compressed subclavian artery, subclavian vein, and the brachial plexus in the region of the thoracic outlet. The objective of this study was to evaluate a conservative physical therapy that aims to restore normal function to the upper aperture in patients with TOS. The efficacy of this study which is conservative physical therapy, was assessed by pain, grip power, pinch grip, and satisfaction level of patients. The results were as follow; 1. Pain(VAS) was statistically significant with Group 1 and Group 2(P<0.05), and Group 2 was more statistically significant than Group 1(P<0.05). 2. Spherical grip was statistically significant with Group 1 and Group 2(P<0.05), and Group 2 was more statistically significant than Group 1(P<0.05). 3. Pinch grip was statistically significant with group 1 and Group 2(P<0.05), and Group 2 was more statistical significance than Group 1(P<0.05). 4. Satisfaction level was statistically significant with group 1 and Group 2(P<0.05), and Group 2 was more statistically significant than Group 1(P<0.05).

• The Korean Journal of Physiology and Pharmacology
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• 제17권2호
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• pp.169-173
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• 2013

Renal ischemia-reperfusion (IR) causes remote liver damage. Oxytocin has anti-inflammatory and antioxidant effects. The main purpose of this study was to evaluate the protective function of oxytocin (OT) in remote liver damage triggered by renal IR in rats. Twenty four rats were randomly divided into four different groups, each containing 8 rats. The groups were as follows: (1) Sham operated group; (2) Sham operated+OT group (3) Renal IR group; (4) Renal IR+OT group. OT ($500{\mu}g/kg$) was administered subcutaneously 12 and 24 hours before and immediately after ischemia. At the end of experimental procedure, the rats were sacrificed, and liver specimens were taken for histological assessment or determination of malondialdehyde (MDA), total oxidant status (TOS), total antioxidant status (TAS), paraoxonase (PON-1) activity and nitric oxide (NO). The results showed that renal IR injury constituted a notable elevation in MDA, TOS, Oxidative stress index (OSI) and significantly decreased TAS, PON-1 actvity and NO in liver tissue (p<0.05). Additionally renal IR provoked significant augmentation in hepatic microscopic damage scores. However, alterations in these biochemical and histopathological indices due to IR injury were attenuated by OT treatment (p<0.05). These findings show that OT ameliorates remote liver damage triggered by renal ischemia-reperfusion and this preservation involves suppression of inflammation and regulation of oxidant-antioxidant status.

• Plant Resources
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• 제8권1호
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• pp.60-66
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• 2005

Lysine is the first essential amino acid for optimal nutrient quality in rice grain. For the narrow genetic diversities of lysine contents in rice, somaclonal variation was the source of mutation in our breeding program. Biochemical selection was conducted using 1 mM S-(2-aminoethyl) cysteine followed by two passages of 5 mM lysine plus threonine in the callus subculture medium. The lysine contents in endosperm of all progenies recovered from the biochemical selection were higher than those of their donor cultivar 'Hwayeongbyeo'. These elevated lysine levels of mutants were successfully transmitted to $M_4$ generation. The lysine contents in endosperm varied 3.85 to $4.80\%$ compare to their donor cultivar 'Hwayeongbyeo' was $3.85\%$. Three of high-lysine germplasms, Lys-l, Lys-2 and Lys-7 were selected by biochemical selection and rapid screening methods. DNA analysis showed that a new insertion of Tos 17 which mapped to rice chromosome 11 on the high-lysine mutant, Lys-2.

• Animal cells and systems
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• 제4권1호
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• pp.71-76
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• 2000

The aim of this study was to investigate expression patterns of the prolactin (PRL) and c-fos genes by 17$\beta$-estradiol (17$\beta$-E) and stress in the mouse pituitary. In the pituitary, the levels of PRL mRNA were found high with some fluctuation at 30, 50, and 90 min whereas the levels of PRL mRNA were low at 120 min when ovariectomized female mice were injected with 17$\beta$-E or vehicle. PRL mRNA levels began to increase again at 4 h and remained high up to 24 h only in the 17$\beta$-E- treated mice. The overall changes in c-fos mRNA by 17$\beta$-E were very similar to those in PRL mRNA in the pituitary. Subsequent study revealed that these high initial levels of PRL and c-fos mRNAs were caused by stress during Injection, not by 17$\beta$-E, since vehicle injection alone into the ovariectomized mice could increase the levels of PRL and c-fos mRNAs. The stress-induced elevations of PRL and c-fos mRNAs were inhibited by bromocriptin, a dopamine agonist, suggesting that the dopaminergic system is involved in the action route of injection stress. In addition, the induced levels of c-fos mRNA by 17$\beta$-E and stress in the pituitary were very low compared with those in the uterus. The time course changes in c-fos mRNA level were different between the pituitary and uterus. Taken together, these data indicate that PRL and c-tos gene expression in the pituitary are regulated by 17$\beta$-E and stress in a parallel manner, supporting the notion that c-Fos plays a role in regulation of PRL gene expression.

• 생명과학회지
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• 제27권11호
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• pp.1233-1244
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• 2017

Calcium-dependent protein kinases (CDPKs)는 칼슘 이온을 매개로 한 신호전달 경로에서 중요한 역할을 한다. 벼(Oryza sativa)에는 29개의 CDPKs가 확인되었지만 그들의 기능은 완벽히 밝혀지지 않았다. 이 연구는 OsCPK11 유전자에 초점을 맞춰 그것의 기능적인 특징을 조사하였다. 벼의 어린 잎, 성장한 잎, 꽃에서 OsCPK11 유전자의 조직-특이적 발현이 확인되었고, 지베렐린이 처리된 벼의 호분층에서도 이 유전자의 발현을 확인할 수 있었다. Tos-17이 삽입된 oscpk11의 표현형에서 돌연변이체 각각의 키는 야생형과 구분되지 않았지만, 영과의 수나 무게는 통계적으로 유의미한 차이가 있었다. 덧붙여 많은 돌연변이체 낟알의 배젖에서 white belly materials이 확인되었다. OsCPK11의 cDNA가 cloning되었고, 약 60.5 kD인 OsCPK11 단백질이 GST affinity chromatography와 SDS-PAGE에 의해 얻어졌다. 아미노산 서열 분석을 통해 OsCPK11이 전형적인 CDPKs의 구조적 특징을 가짐을 알 수 있었다. 이 결과는 OsCPK11유전자의 기능과 식물에서 칼슘 이온을 매개로 한 신호전달 경로에 CDPK 역할의 유용한 정보를 제공해줄 것이다.

• Journal of Plant Biotechnology
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• 제37권4호
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• pp.465-471
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• 2010

We assessed whether the cow1 mutant defects are associated with growth of Tos17 and T-DNA insertional rice in blue light (BL). Growth of oscow1 mutants which encoded a member of the YUCCA protein family was retarded in BL. Root to shoot ratios of the mutants were reduced about 2 times lower in the absence of NAA and about 2.5 times lower in the presence of NAA; the shoot growth was not significantly changed by NAA addition. Photosynthetic activity of the mutants was however inhibited in high light. Pigment analysis showed significant difference between wild-type (Chl a:b = 3.02) and mutants (3.84). Carotenoid contents of the mutants were also decreased considerably, implying the involvement of cow1 in pigment formation. These findings lead us to suggest that the growth retardation of oscow1 mutant plants by BL results from the difference of photosynthetic activity in part.