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김경묵,김세원,서유나,정우상,문상관,진철,조기호,권승원,Kim, Gyeong-muk,Kim, Se-won,Seo, Yu-na,Jung, Woo-sang,Moon, Sang-Kwan,Jin, Chul,Cho, Ki-ho,Kwon, Seungwon 대한중풍순환신경학회 2019 대한중풍.순환신경학회지 Vol.20 No.1
A case of a 46-year-old Korean male with post-stroke insomnia that induced by intracranial hemorrhage was presented. He was treated with Transcutaneous electric acupoint stimulation (TEAS) at BL62 and KI6 once per a day for 17 days. We recorded the patient's sleep time and time of asleep, and used PSQI-K to assess severity of patient's insomnia symptom. After using TEAS, there was improvement in patient's insomnia severity and the time of sleep. From the result of this case, electrical stimulation at acupoint can may be effective in treating post-stroke insomnia.
Focal adhesion kinase and src expression in premalignant and malignant skin lesions
( Ju Yeon Choi ),( Jae Yun Lim ),( Han Saem Kim ),( Jung Min ),( Jung In Kim ),( Hyun Min Seo ),( Sang Hyeon Hwang ),( Chong Won Choi ),( Yoon Hwan Kim ),( Jin Hee Sohn ),( Hyunjoo Lee ),( Won Serk Ki 대한피부과학회 2015 대한피부과학회 학술발표대회집 Vol.67 No.2
Background: Focal adhesion kinase (FAK) and Src are non-receptor tyrosine kinases. FAK and Src play a critical role in inducing malignant transformation in tumor cells. Objectives: We performed immunohistochemical staining for total and phosphorylated forms of FAK and Src, to evaluate the role of FAK and Src in the development of premalignant and malignant skin lesions. Methods: A total of 59 facial skin samples (30 actinic keratoses, 10 Bowen``s diseases, 13 squamous cell carcinomas and six perilesional skins) were immunohistochemically stained for Ki-67, total (t) and phosphorylated (p) form of FAK and Src. Methods: A total of 59 facial skin samples (30 actinic keratoses, 10 Bowen``s diseases, 13 squamous cell carcinomas and six perilesional skins) were immunohistochemically stained for Ki-67, total (t) and phosphorylated (p) form of FAK and Src. Results: Cells positive for t-Src, p-Src-y530, t-FAK and pFAK-s722 were detected in premalignant intra-epithelial lesions (PELs) and squamous cell carcinomas (SCCs), but not in the perilesional skin. There was a tendency towards high correlation between Ki-67 and t-FAK or pFAK-s722, suggestive of the active role of FAK in cell proliferation. Conclusion: Our findings of higher t-Src and p-Src-y530 positive cells in PELs, as compared to SCCs (with higher Ki-67 level), are suggestive of the other role of Src in tumor formation and progression, which requires further investigation.
Seo, Woo Duck,Yuk, Heung Joo,Curtis-Long, Marcus J.,Jang, Ki Chang,Lee, Jin Hwan,Han, Sang-Ik,Kang, Hang Won,Nam, Min Hee,Lee, Sung-Joon,Lee, Ji Hae,Park, Ki Hun American Chemical Society 2013 Journal of agricultural and food chemistry Vol.61 No.5
<P>Adenosine 5′-monophosphate-activated protein kinase (AMPK) is an intracellular sensor that can regulate glucose levels within the cell. For this reason, it is well-known to be a target for drugs against diabetes and obesity. AMPK was activated significantly by the hexane extract of barley sprouts. This AMPK activation emerges across the growth stages of the sprout, becoming most significant (3 times above the initial stages) 10 days after sprouting. After this time, the activation decreased between 13 and 20 days post-sprouting. Analysis of the hexane extracts by gas chromatography–mass spectrometry showed that the amounts of policosanols (PCs, which are linear, primary aliphatic alcohols with 20–30 carbons) in the plant dramatically increased between 5 days (109.7 mg/100 g) and 10 days (343.7 mg/100 g) post-sprouting and then levels fell back down, reaching 76.4 mg/100 g at 20 days post-sprouting. This trend is consistent with PCs being the active ingredient in the barley plants. We validate this by showing that hexacosanol is an activator of AMPK. The richest cultivar for PCs was found to be the Daejin cultivar. Cultivars had a significant effect on the total PC content (113.2–183.5 mg/100 g) within the plant up to 5 days post-sprouting. However this dependence upon the cultivar was not so apparent at peak stages of PC production (10 days post-sprouting). The most abundant PC in barley sprout, hexacosanol, contributed 62–80% of the total PC content at every stage. These results are valuable to determine the optimal times of harvest to obtain the highest yield of PCs.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jafcau/2013/jafcau.2013.61.issue-5/jf3041879/production/images/medium/jf-2012-041879_0004.gif'></P>
Seo, Ki-Won,Noh, Yong-Jin,Na, Seok-In,Kim, Han-Ki Elsevier 2016 Solar energy materials and solar cells Vol.155 No.-
<P><B>Abstract</B></P> <P>Highly-transparent and flexible random mesh-like Ag networks formed by self-assembled Ag nanoparticles for use in transparent and flexible electrodes for ITO-free flexible organic solar cells (FOSCs) was demonstrated. By transferring a self-assembled Ag nanoparticle network onto a PET substrate, embossed and intaglio-type mesh-like Ag network electrodes were fabricated. Electrical, optical, morphological, and mechanical properties of the embossed and intaglio-type mesh-like Ag network electrodes were compared in detail. Although both mesh-like Ag networks exhibited similar sheet resistance, optical transmittance, and flexibility, the intaglio-type Ag networks were advantageous to use as transparent electrodes for FOSCs due to the high aspect ratio of emboss-type Ag networks. Regardless of organic active materials, FOSCs with intaglio-type Ag networks exhibited better performance than FOSCs with emboss-type Ag networks due to ease in forming uniform organic layer coatings on the intaglio-type Ag networks embedded in the substrate. This indicated that intaglio-type mesh-like Ag network electrodes are a promising flexible and transparent anode for printable ITO-free FOSCs.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Characteristics of mesh-like Ag network electrodes were investigated for ITO-free FOSCs. </LI> <LI> By embedding an Ag network into a PET substrate, an intaglio-type Ag network electrode was achieved. </LI> <LI> Intaglio-type Ag network is a promising printable transparent electrode to replace high-cost ITO electrodes. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Seo, Se Won,Park, Sangbaek,Jeong, Hui-Yun,Kim, Sang Hyeon,Sim, Uk,Lee, Chan Woo,Nam, Ki Tae,Hong, Kug Sun The Royal Society of Chemistry 2012 Chemical communications Vol.48 No.84
<P>Photocatalytic activity of NaTaO<SUB>3</SUB> was significantly improved by using a molecular co-catalyst [Mo<SUB>3</SUB>S<SUB>4</SUB>]<SUP>4+</SUP>. Its hydrogen production rate is 28 times higher than pure NaTaO<SUB>3</SUB>. This study presents the potential of bioinspired molecular metal clusters as efficient co-catalysts.</P> <P>Graphic Abstract</P><P>Molecular co-catalyst [Mo<SUB>3</SUB>S<SUB>4</SUB>]<SUP>4+</SUP> loaded NaTaO<SUB>3</SUB> were developed by a facile impregnation method and its photocatalytic water splitting performance significantly increased. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c2cc36216c'> </P>
Radiation-related occupational cancer and its recognition criteria in South Korea
Seo, Songwon,Lee, Dalnim,Seong, Ki Moon,Park, Sunhoo,Kim, Soo-Geun,Won, Jong-Uk,Jin, Young Woo BioMed Central 2018 대한직업환경의학회지 Vol.30 No.1
<P>Ionizing radiation is a well-known carcinogen, and is listed as one carcinogenic agent of occupational cancer. Given the increase in the number of workers exposed to radiation, as well as the increase in concern regarding occupational cancer, the number of radiation-related occupational cancer claims is expected to increase. Unlike exposure assessment of other carcinogenic agents in the workplace, such as asbestos and benzene, radiation exposure is usually assessed on an individual basis with personal dosimeters, which makes it feasible to assess whether a worker’s cancer occurrence is associated with their individual exposure. However, given the absence of a threshold dose for cancer initiation, it remains difficult to identify radiation exposure as the root cause of occupational cancer. Moreover, the association between cancer and radiation exposure in the workplace has not been clearly established due to a lack of scientific evidence. Therefore, criteria for the recognition of radiation-related occupational cancer should be carefully reviewed and updated with new scientific evidence and social consensus. The current criteria in Korea are valid in terms of eligible radiogenic cancer sites, adequate latent period, assessment of radiation exposure, and probability of causation. However, reducing uncertainty with respect to the determination of causation between exposure and cancer and developing more specific criteria that considers mixed exposure to radiation and other carcinogenic agents remains an important open question.</P>
Seo, Myung-Chul,Seong, Ki-Yeong,Cho, Hyeon-Suk,Kim, Min-Tae,Park, Tae-Seon,Kang, Hang-Won 한국토양비료학회 2014 한국토양비료학회지 Vol.47 No.1
In order to evaluating physiochemical properties of soil under minimum tillage and direct seeding cultivation on dry rice paddy, we conducted to analyze the soil physiochemical characteristics in treatment with 2-year minimum tillage and dry direct seeding (2MT), 3-year minimum tillage and dry direct seeding (3MT), and tillage transplanting cultivation (TT). As results of analyzing soil organic matter (OM) contents with 2 cm soil depth of interval from surface to 30 cm, OM contents with surface soil from 0 to 2MT and 3MT were higher than TT, recorded 34.6, 28.1 and $19.8gkg^{-1}$, respectively. But until 20cm in soil depth, it was not so large on the deviation of OM contents among the 3 treatments comparing with 2cm surface. Beneath 20 cm in soil depths, 2- and 3-year, OM contents in TT were distributed to be lower than 2MT and 3MT. The contents of total nitrogen in 2MT and 3MT were higher than the content in TT across the soil profile. Consequently, though minimum tillage and direct seeding farming is obviously the practice to saving of machinery work and labor, other practices such as continuously input OM should be needed to achieve carbon sequestration goal through minimum tillage and direct seeding on dry paddy.