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Yun, Dong-Jin,Kim, Seyun,Jung, Changhoon,Lee, Chang-Seok,Sohn, Hiesang,Won, Jung Yeon,Kim, Yong Su,Chung, JaeGwan,Heo, Sung,Kim, Seong Heon,Seol, Minsu,Shin, Weon Ho The Royal Society of Chemistry 2018 Physical chemistry chemical physics Vol.20 No.4
<P>Correction for ‘Direct characterization of graphene doping state by <I>in situ</I> photoemission spectroscopy with Ar gas cluster ion beam sputtering’ by Dong-Jin Yun <I>et al.</I>, <I>Phys. Chem. Chem. Phys.</I>, 2018, 20, 615-622.</P>
A new method of fabricating robust freeform 3D ceramic scaffolds for bone tissue regeneration
Seol, Young‐,Joon,Park, Dong Yong,Park, Ju Young,Kim, Sung Won,Park, Seong Jin,Cho, Dong‐,Woo Wiley Subscription Services, Inc., A Wiley Company 2013 Biotechnology and bioengineering Vol.110 No.5
<P><B>Abstract</B></P><P>Fabrication of three‐dimensional (3D) scaffolds with appropriate mechanical properties and desired architecture for promoting cell growth and new tissue formation is one of the most important efforts in tissue engineering field. Scaffolds fabricated from bioactive ceramic materials such as hydroxyapatite and tricalcium phosphate show promise because of their biological ability to support bone tissue regeneration. However, the use of ceramics as scaffold materials is limited because of their inherent brittleness and difficult processability. The aim of this study was to create robust ceramic scaffolds, which have a desired architecture. Such scaffolds were successfully fabricated by projection‐based microstereolithography, and dilatometric analysis was conducted to study the sintering behavior of the ceramic materials. The mechanical properties of the scaffolds were improved by infiltrating them with a polycaprolactone solution. The toughness and compressive strength of these ceramic/polymer scaffolds were about twice those of ceramic scaffolds. Furthermore, the osteogenic gene expression on ceramic/polymer scaffolds was better than that on ceramic scaffolds. Through this study, we overcame the limitations of previous research on fabricating ceramic scaffolds and these new robust ceramic scaffolds may provide a much improved 3D substrate for bone tissue regeneration. Biotechnol. Bioeng. 2013; 110: 1444–1455. © 2012 Wiley Periodicals, Inc.</P>
Dong Won Seol,Soo Yeon Im,Woo June Hur,Min Ouk Park,Dong Soo Kim,Jae Yoon Jo,In Seok Park 한국유전학회 2008 Genes & Genomics Vol.30 No.3
Haematological features pertaining to aerobic capability were compared between diploid and triploid specimens of the Far Eastern catfish, Silurus asotus. No significant differences between diploids and triploids were found for the haematocrit value, total haemoglobin, and mean corpuscular haemoglobin concentration, while the mean corpuscular volume, mean corpuscular haemoglobin, and plasma glucose concentration were significantly higher in triploids than in diploids, and the number of red blood cells was significantly lower in triploids than in diploids. The oxygen consumption rate did not differ significantly between diploid and triploid fish ( P>0.05). Nevertheless, the respiratory frequency was higher in triploids than in diploids ( P< 0.05). Triploids were characterized by a lower concentration of circulating blood cells, and aquaculture practice should consider the need for a lower surface to volume ratio.
( Dong Ju Kim ),( Yoon Mi Jeoun ),( Dong-won Lee ),( Ja Seol Koo ),( Sang Woo Lee ) 대한장연구학회 2018 Intestinal Research Vol.16 No.4
Background/Aims: Ulcerative colitis undergoes periods of exacerbation and remission. Fecal calprotectin levels increase with gut inflammation and correlate with endoscopic disease activity in ulcerative colitis. Intestinal blood loss and fecal immunochemical test levels also correlate with endoscopic disease activity. This study statistically evaluated the usefulness of fecal calprotectin, fecal immunochemical test, and C-reactive protein (CRP) as markers of disease activity. Methods: A total 106 ulcerative colitis patients who underwent endoscopy and fecal calprotectin, fecal immunochemical test, and CRP testing, from March 2015 to August 2016, were retrospectively reviewed. Disease activity was assessed using a partial Mayo score and Mayo endoscopic score. The ability of fecal and serologic tests to reflect endoscopic disease severity was statistically evaluated. Results: Among 106 patients, 68 underwent endoscopy and stool study within 2 weeks. In patients with mild to severe activity, fecal immunochemical test and fecal calprotectin were superior to CRP at Mayo endoscopic score detection rate. The area under the curves of fecal immunochemical test and fecal calprotectin for the detection of Mayo endoscopic score ≥1 were 0.956 and 0.942, respectively, and were superior to that of CRP (0.756). At Mayo endoscopic score, the effects of combination of fecal immunochemical test and CRP or fecal calprotectin and CRP were found to be higher than those of the independent fecal immunochemical test or fecal calprotectin. Conclusions: Fecal immunochemical test and fecal calprotectin can effectively detect active ulcerative colitis better than remission. As these markers reflect the status of mucosal inflammation, they may reduce the requirement for invasive endoscopic examination. (Intest Res 2018;16:563-570)