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Kang, Seung-Mi,Min, Ji-Yun,Kim, Yong-Duck,Park, Dong-Jin,Jung, Ha-Na,Chandrakant S. Karigar,Ha, Yeong-Lae,Kim, Seon-Won,Choi, Myung-Suk Plant molecular biology and biotechnology research 2005 Plant molecular biology and biotechnology research Vol.2005 No.
The effect of precursor feeding on the production of bilobalide and ginkgolides was studied with suspension cell cultures of Ginkgo biloba. The precursors greatly influenced the productivity of bilobalide and ginkgolides. Precursor supplementation increased the accumulation of both bilobalide and ginkgolides, and with positive effect on cell growth. The GA accumulation by cell cultures was influenced by precursors upstream in the metabolism, whereas the BB accumulation was under the influence of downstream precursors of the terpenoid biosynthetic pathway. Furthermore, precursor feeding modified the ratios of the BB, GA and GB in cells and cell cultures of G. biloba. The studies also aid in understanding effect of precursor feeding on the bilobalide and ginkgolides biosynthetic pathway. ⓒ 2005 Elsevier B.V. All rights reserved.
Duck K. Choi,Sung Kwun Chough,Yi Kyun Kwon,Seung-Bae Lee,Jusun Woo,Imseong Kang,Hyun Suk Lee,Sang Min Lee,Jang Won Sohn,Young Jae Shinn,Dong-Jin Lee 한국지질과학협의회 2004 Geosciences Journal Vol.8 No.2
The Taebaek Group (Cambrian-Ordovician) in theTaebaeksan Basin comprises mixed carbonate-siliciclastic sequenceand is exposed well in the Seokgaejae section located in the central-eastern part of the Korean Peninsula. The group in the Seokgaejaesection consists of in ascending order the Myeonsan, Myobong,and Duwibong formations. This study describes in detail the well-exposed outcrop sections of the Taebaek Group in the SeokgaejaePass in order to refine the lithostratigraphy of the lower Paleozoicstrata in the Taebaeksan Basin, Korea. The refined lithostratigra-phy delineates clearly the lithologic boundary between the Myobongand Daegi formations, the Hwajeol and Dongjeom formations, theDumugol and Makgol formations, and the Makgol and Jigunsanformations. The preliminary information on trilobite faunal asem-blages suggests that the Cambrian-Ordovician boundary can beplaced within the lowermost part of the Dongjeom Formation.
Kang, Young-Min,Min, Ji-Yun,Kim, Won-Jung,Kim, Yong-Duck,Lee, Byung-Hyun,Choi, Myung-Suk Plant molecular biology and biotechnology research 2004 Plant molecular biology and biotechnology research Vol.2004 No.-
Hyoscyamine and scopolamine are two most common tropane alkaloids found in the Solanaceae. The pEB expression vector carrying Nspmt gene was transformed to Agrobacterium rhizogenes. The growth of transgenic hairy roots were approximately to 80% of the wild type root. Transgenic hairy roots are less developed on only their branch roots than those of the wild type root. The extracts from Nspmt transgenic hairy root lines, 3 and 5 contained between 3.52 and 4.23 ㎎/g dry weight as hyoscyamine and did between 5.23 to 6.40 ㎎/g dry weight as scopolamine. These results showed that the overexpression of the pmt gene enhanced tropane alkaloids production of S. parviflora transformed roots and this improvement affected both hyoscyamine and scopolamine production.
Won-Seog Chong,Young-Soo Lee,Young-Jin Kang,Duck-Hyung Lee,Jae-Chun Ryu,Hye Sook Yun-Choi,Ki-Churl Chang 대한생리학회-대한약리학회 1998 The Korean Journal of Physiology & Pharmacology Vol.2 No.3
<P> Tetrahydroisoquinoline (THI) alkaloids can be considered as cyclized derivatives of simple phenylethylamines. Many of them, especially with 6,7-disubstitution, demonstrate a relatively high affinity for catecholamines. Present study examines the pharmacological action of limited series of THI, using rats isolated atria and aorta. In addition, a [<SUP>3</SUP>H] prazosin displacement binding study with THI compounds was performed, using rat brain homogenates to investigate whether these probes have -adrenoceptor affinity. We also compared the vascular relaxation potency of these probes with dobutamine. YS 49, YS 51, higenamine and dobutamine, concentration-dependently, relaxed endothelium-denuded rat thoracic aorta precontracted with phenylephrine (PE, 0.1 ㄍM) in which pEC<SUB>50</SUB> were 5.56⁑0.32 and 5.55⁑0.21, 5.99⁑1.16 and 5.57⁑0.34, respectively. These probes except higenamine also relaxed KCl (65.4 mM)-contracted aorta. In isolated rat atria, all THIs and dobutamine increased heart rate and contractile force. In the presence of propranolol, the concentration response curves of YS 49 and YS 51 shifted to the right and resulted in pA<SUB>2</SUB> values of 8.07⁑0.84 and 7.93⁑0.11, respectively. The slope of each compound was not deviated from unity, indicating that these chemicals are highly competitive at the cardiac -adrenoceptors. YS 49, YS 51, and higenamine showed -adrenoceptor affinity in rat brain, in which the dissociation constant (K<SUB>i</SUB>) was 2.75, 2.81, and 1.02 ㄍM, respectively. It is concluded, therefore, that THI alkaloids have weak affinity to <SUB>1</SUB>-adrenoceptors in rat aorta and brain, respectively, while these probes show relatively high affinity for cardiac -adrenoceptors. Thus, these chemicals may be useful in the treatment of congestive heart failure.
A New Pea Cultivar, Cheongmi with Short Stem Height, Lodging Resistance and High Yield
Won Young Han,Sang Ouk Shin,Myoung Gun Choung,Chan Sik Jung,Doo Chull Shin,Sea Kwan Oh,Sung Taeg Kang,In Youl Baek,Duck Yong Suh,Soon Chul Kim,Dong Kwan Kim,Chang Ki Son 한국육종학회 2004 한국육종학회지 Vol.36 No.5
A new pea cultivar, Cheongmi was developed at the Yeongnam Agricultural Research Institute (YARI) in 2003. It was selected from a cross YP303 (Frescoloy / Upton) // YP113 (Sparkle/Early Bird) /3/ YP115 (Sparkle / Euiseongjaerae) in 1992. The preliminary,
A New Black Seed Cost Soybean Cultivar, "Heugmi" with Lodging Tolerance and Green Cotyledon
Won Young Han,In Youl Baek,Hyun Tae Kim,Jong Min Ko,Nam Suk Kang,Doo Chull Shin,Sung Taek Kang,Myung Gun Chung,Ki Won Oh,Sang Ouk Shin,Keum Yong Park,Duck Yong Suh,Jin Hwan Lee 한국육종학회 2007 한국육종학회지 Vol.39 No.3
A new black seed coat soybean cultivar, “Heugmi” was developed at the Yeongnam Agricultural Research Institute (YARI) in 2006. The goal to breed the black seed coat soybean is to develop the cultivar with high yield, lodging tolerance, resistant to disease such as soybean mosaic virus (SMV), and bacterial pustule and seed size. Heugmi was selected from the cross between Milyang 78, which was late maturing, susceptible to lodging and SMV and with large seed size and green cotyledon, and Milyang 68, which was middle maturing, resistant to lodging and SMV and with middle seed size and yellow cotyledon. The preliminary, advanced and regional yield trials for evaluation and selection of this cultivar were carried out from 2001 to 2006. It has determinate growth habit, purple flower, brown pubescence, black pod color, black seed coat, green cotyledon, spherical seed shape, oval leaf shape and middle seed size (24.8 grams per 100 seeds), and it was 2 days earlier in maturity than the check cultivar Cheongjakong. Heugmi was better in the seed quality of crude protein contents, sucrose and total sugar contents than the check cultivar. It also has been identified to have resistance to SMV which was the troublesome soybean diseases. The average yield of Heugmi was 2.53 ton per hectare in the regional yield trials carried out in seven locations of Korea from 2004 to 2006, which was 8 percent higher than the check cultivar Cheongjakong.
Kang, Young-Min,Min, Ji-Yun,Kim, Won-Jung,Kim, Yong-Duck,Lee, Byung-Hynn,Choi, Myung-Suk The Korean Society of Medicinal Crop Science 2004 韓國藥用作物學會誌 Vol.12 No.2
Hyoscyamine and scopolamine are two most common tropane alkaloids found in the Solanaceae. The pEB expression vector carrying Nspmt gene was transformed to Agrobacterium rhizogenes. The growth of transgenic hairy roots were approximately to 80% of the wild type root. Transgenic hairy roots are less developed on only their branch roots than those of the wild type root. The extracts from Nspmt transgenic hairy root lines, 3 and 5 contained between 3.52 and 4.23 mg/g dry weight as hyoscyamine and did between 5.23 to 6.40 mg/g dry weight as scopolamine. These results showed that the overexpression of the pmt gene enhanced tropane alkaloids production of S. parviflora transformed roots and this improvement affected both hyoscyamine and scopolamine production.
Implication of Repeated Review in Capsule Endoscopy for the Detection of Abnormal Lesions
( Kang Won Lee ),( Bo Ra Keum ),( Seung Han Kim ),( Jae Min Lee ),( In Kyung Yoo ),( Hyuk Soon Choi ),( Eun Sun Kim ),( Yoon Tae Jeen ),( Hoon Jai Chun ),( Hong Sik Lee ),( Chang Duck Kim ),( Ho Sang 대한내과학회 2015 대한내과학회 추계학술발표논문집 Vol.2015 No.1
Background: About 40,000 to 60,000 images are analyzed for a complete interpretation of a single capsule endoscopy case. Diagnostic yield of capsule endoscopy for occult gastro-intestinal bleeding is between 60 and 70 percents. However overall abnormality detection rate is roughly 30 to 50 percents due to excessive workload which can result in examiners missing significant lesions during the review of capsule endoscopy images. Because of the poor detection rate, meticulous analysis ofimages has become critical for safe patient-care. Impact of re-review on the detection rate of abnormal lesions is not known. In this study, we compare the detection rates of abnormal findings in different re-review methods for capsule endoscopy. Methods: Capsule endoscopy for 20 patients were conducted. Indications include obscure gastro-intestinal bleeding, small bowel tumor and chronic abdominal pain. Four endoscopists interpreted capsule endoscopy images. Second reviews were performed by the same clinician (A-A) and other clinician (A-B). Three modes of interpretation of capsule endoscopy were compared; A vs. A-A vs. A-B. PillCami SB, GiveniImaging Ltd. was used for the evaluation. Collected images were reviewed with RAPID Readeri 5. Consensus standard of small bowel diagnosis had been established by joint review sessions with highly experienced endoscopists. Results: The mean age of subjects was 52.4±20.03 (12 Male, 8 Female). The detection rate of the re-reviewed group done by a single clinician (A-A) was higher than the single review group (A) (82.7% vs. 55.5%, p<0.05). The detection rate of re-analysis by different clinicians (A-B) was also higher than the single review group (A) (85.5% vs. 55.5%, p<0.05). Conclusions: Because re-reviewing capsule endoscopy added more information for patients, re-review may be effective enough to be considered as a routine interpretation protocol.