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Lim, Choong-Sun,Seok, Sang Il,Im, Sang Hyuk The Royal Society of Chemistry 2012 Journal of materials chemistry Vol.22 No.18
<P>Uniform PS-<I>b</I>-P2VP (polystyrene-<I>block</I>-poly-2-vinylpyridine) block copolymer nanoparticles were successfully synthesized using a simple reprecipitation method. The PS-<I>b</I>-P2VP nanoparticles could serve as sacrificial templates to generate silica and titania hollow nanoparticles of ∼100 nm size.</P> <P>Graphic Abstract</P><P>The uniform PS-<I>b</I>-P2VP block copolymer nanoparticles serve as sacrificial templates to produce hollow TiO<SUB>2</SUB> nanoparticles with sub-100 nm size. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c2jm30497j'> </P>
Effect of Duck-meat Intake on Adult Disease Risk Factors in Adult Human Males
Sung Ho Kang,Oun Hyun Kim,Chang Jin Lee,Ho Sung Jung,Young Tae Lim,Hyuk Song,Si Heung Sung 한국축산식품학회 2010 한국축산식품학회지 Vol.30 No.6
This study was conducted to evaluate the effects of duck-meat consumption on adult disease risk factors, including body compositions, hematological variables, and serum metabolic and lipid profiles in adult human males. To obtain results, 20 adult males aged 20 to 25 were subjected to a diet of 600 g/day of duck-meat for 4 wk, after which body composition, hematological variables, and serum metabolic and lipid profiles were investigated to determine if there was a relationship between duck-meat consumption and adult disease risk factors. The results revealed that high amounts of duck-meat intake did not negatively alter body indices such as body weight, fat mass, body mass index (BMI), % body fat or waste-to-hip ratio (WHR). Furthermore, there were statistically insignificant changes in the number of blood cells, although this number did increase significantly following intake of duck-meat. Moreover, general decreases in serum metabolic parameters were observed, but none of these changes were significant with the exception of the concentration of blood urea nitrogen (BUN). The serum concentrations of LDL-cholesterol also showed a statistically significant decrease by 5.86%. Therefore, this study suggests that the ingestion of duck-meat not only significantly increased the RBC count but also decreased BUN and LDL-cholesterol concentrations in adult males.
( Sang Lim Kim ),( Kyou Chae Lee ),( Jin Sub Lee ),( Yoon Hyuk Choi ),( Hyun Ho Son ),( Hong Dae Jung ),( Mi Yeung Sohn ),( Yong Hyun Jang ),( Seok Jong Lee ),( Do Won Kim ),( Weon Ju Lee ) 대한피부과학회 2013 대한피부과학회 학술발표대회집 Vol.65 No.2
Background: Acne is a inflammatory skin disorders caused by inflammatory biomarkers. Magnesium ascorbyl phosphate (MAP) is a stable precursor of vitamin C. It achieves a constant delivery of vitamin C into the skin and has antioxidative effects. Objectives: To evaluate changes in the expression of inflammatory biomarkers after treatment of cultured sebocytes with MAP Methods: RT-PCR, ELISA and western blotting were performed for inflammatory cytokines, matrix metalloproteinases (MMPs), antimicrobial peptides (AMPs) and keratinocyte differentiation markers before and after treatment of cultured sebocytes with MAP (10-2 mol), lipopolysaccharide (LPS) and a combination of MAP and LPS. RT-PCR and western blotting were also done for Toll-like receptor-4 (TLR-4) and NF-ĸB before and after treatment of cultured sebocytes with MAP, LPS and a combination of MAP and LPS. Results: The expressions of inflammatory cytokines (e.g., IL-1 β and IL-8) and MMPs (e.g., MMP-9) were decreased after treatment with MAP and a combination of MAP and LPS, and increased after treatment with LPS. AMPs (e.g., LL-37) were decreased after treatment with MAP and a combination of MAP and LPS, and increased after treatment with LPS. The expression of TLR-4 and NF-ĸB was decreased after treatment with MAP and a combination of MAP and LPS, and increased after treatment with LPS. Conclusion: MAP, which is a stable precursor of vitamin C, may be a good effective and alternative agent to improve inflammatory reaction in acne.
Lim, Sung-Hyuk,Yamaguchi, Munehiro,Nishimura, Okio,Mie, Yasuhiro,Tamura, Tomohiro,Kim, Byung-Woo,Suzuki, Masaaki American Scientific Publishers 2009 Journal of Nanoscience and Nanotechnology Vol.9 No.12
<P>We have succeeded to immobilize fluorescent proteins selectively using a micro-structured organosilane self-assembled monolayer as a template. An organosilane layer with amino terminal group was formed on a thermally oxidized Si wafer by liquid-phase method and then was pattern-etched by vacuum ultraviolet light (VUV). The second organosilane layer with thiol terminal group was deposited on the etched area by chemical vapor surface modification method (CVSM). These micro-structured organosilane layer containing two reactive terminal groups were chemically modified using bi-functional linkers. Two kinds of fluorescent protein, Enhanced Cyan Fluorescent Protein (ECFP) and R-phycoerythrin were selectively immobilized on the chemically modified surface.</P>
Lim, Choong-Sun,Im, Sang Hyuk,Chang, Jeong Ah,Lee, Yong Hui,Kim, Hi-jung,Seok, Sang Il RSC Pub 2012 Nanoscale Vol.4 No.2
<P>A mesoporous (mp)-TiO(2)/Sb(2)S(3)/P3HT [poly(3-hexylthiophene)] heterojunction solar cell displays reduced external quantum efficiency (EQE) at a wavelength of approximately 650 nm. This loss in EQE is due to incomplete charge carrier transport because the transportation of charge carriers generated in P3HT by the absorption of light into Sb(2)S(3) was inefficient, and consequently, the carriers recombined. The depression of the EQE was greatly relieved by introducing the porous structure formed by thermal decomposition of 2,2'-azobisisobutyronitrile (AIBN) into the P3HT layer.</P>
( Sang-koo Park ),( Sung-hyuk Lim ),( Chan-woo Park ),( Jin-woo Park ),( Sung-ho Chang ),( Keun-hye Park ),( Hae-ja Park ),( Ji-hye Song ),( Dong-ok Uhm ),( Ki-bong Kim ) 대한임상검사과학회 2011 대한임상검사과학회지(KJCLS) Vol.43 No.1
The purpose of this study was to analyse brainstem auditory evoked potentials (BAEP) wave change data during microvascular decompression (MVD). The nerve function of Cranial Nerve VIII is at risk during MVD. Intraoperative monitoring of BAEP can be a useful tool to decrease the danger of hearing loss. Between January and December 2009, 242 patients had MVD for hemifacial spasm (HFS) and trigeminal neuralgia (TN). Among intraoperative BAEP changes, amplitude of V-V’ was the most frequently observed during cerebellar retraction and decompression step of the MVD procedure. 138 patients (57%) had no BAEP change while 104 patients (42.98%) had BAEP change. 69 patients (28.5%) had Type A-I, 16 patients (6.6%) had Type A-II, 5 patients (2.1%) had Type B, and 13 patients (5.37%) had Type C. MVD is a surgical procedure to relieve the symptoms (e.g. pain, muscle twitching) caused by compression of a nerve by an artery or vein. During BAEP intraoperative monitoring, the surgical step is important in interpreting the changes of wave V. Several potential mechanisms of injury may affect the cochlear nerve, and complete loss of BAEP is often associated with postoperative hearing loss. Intraoperative BAEP monitoring may provide an early warning of hearing disturbance after MVD.
CASE REPORT : Hemifacial Spasm Caused by Brain Tumor
( Sang-ku Park ),( Soon-chul Hyun ),( Sung-hyuk Lim ),( Chan-woo Park ),( Jin-woo Park ),( Dong-jun Kim ),( Ki-eob Kim ),( Gi-bong Kim ) 대한임상검사과학회 2013 대한임상검사과학회지(KJCLS) Vol.45 No.3
Separating of the facial nerve caused by compression near the blood vessels that cause the blood vessels and surgery when the hemifacial spasm, facial spasms, will disappear. These impacts have occurred very rarely and seen in this paper as facial spasms due to a brain tumor. The size of a brain tumor grows, which will put pressure on the surrounding facial spasm. Treated hemifacial spasm symptoms disappear through the removal of a brain tumor that occurs because saw.
Sang-a Park,Gihwan Byeon,Jin Hyeong Jhoo,Hyung-Chun Kim,Myoung-Nam Lim,Jae-Won Jang,Jong Bin Bae,Ji Won Han,Tae Hui Kim,Kyung Phil Kwak,Bong Jo Kim,Shin Gyeom Kim,Jeong Lan Kim,Seok Woo Moon,Joon Hyuk 대한정신약물학회 2023 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.21 No.4
Objective: To investigate the relationship between reduced glutathione (GSH), a key molecule of the antioxidant defense system in the blood, and glutathione reductase (GR), which reduces oxidized glutathione (glutathione disulfide [GSSG]) to GSH and maintains the redox balance, with the prevalence of Alzheimer’s dementia and cognitive decline. Methods: In all, 20 participants with Alzheimer’s dementia who completed the third follow-up clinical evaluation over 6 years were selected, and 20 participants with normal cognition were selected after age and sex matching. The GSH and GR concentrations were the independent variables. Clinical diagnosis and neurocognitive test scores were the dependent variables indicating cognitive status. Results: The higher the level of GR, the greater the possibility of having normal cognition than of developing Alzheimer’s dementia. Additionally, the higher the level of GR, the higher the neurocognitive test scores. However, this association was not significant for GSH. After 6 years, the conversion rate from normal cognition to cognitive impairment was significantly higher in the lower 50th percentile of the GR group than in the upper 50th percentile. Conclusion: The higher the GR, the lower the prevalence of Alzheimer’s dementia and incidence of cognitive impairment and the higher the cognitive test scores. Therefore, GR is a potential protective biomarker against Alzheimer’s dementia and cognitive decline.