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Jo, Ji Hye,Jeon, Che Ok,Lee, Dae Sung,Park, Jong Moon Elsevier 2007 Journal of biotechnology Vol.131 No.3
<P><B>Abstract</B></P><P>Hydrogen production by the dark fermentation of food wastes is an economic and environmentally friendly technology to produce the clean energy source as well as to treat the problematic wastes. However, the long-term operations of the continuous anaerobic reactor for fermentative hydrogen production were frequently unstable. In this study, the structure of microbial community within the anaerobic reactor during unstable hydrogen production was examined by denaturing gradient gel electrophoresis (DGGE) and terminal restriction fragment length polymorphism (T-RFLP) techniques. The changes in microbial community from H<SUB>2</SUB>-producing <I>Clostridium</I> spp. to lactic acid-producing <I>Lactobacillus</I> spp. were well coincident with the unexpected process failures and the changes of metabolites concentrations in the effluent of the anaerobic reactor. As the rate of hydrogen production decreased, effluent lactic acid concentration increased. Low rate of hydrogen production and changes in microbial community were related to the ‘kimchi’ content and storage temperature of food waste feed solution. After low temperature control of the storage tank of the feed solution, any significant change in microbial community within the anaerobic reactor did not occur and the hydrogen production was very stably maintained for a long time.</P>
Jo, Jae-Seong,Nam, Chung-Mo,Sull, Jae-Woong,Yun, Ji-Eun,Kim, Sang-Yeun,Lee, Sun-Ju,Kim, Yoon-Nam,Park, Eun-Jung,Kimm, Hee-Jin,Jee, Sun-Ha Korea Genome Organization 2012 Genomics & informatics Vol.10 No.3
Colorectal cancer (CRC) is among the leading causes of cancer deaths and can be caused by environmental factors as well as genetic factors. Therefore, we developed a prediction model of CRC using genetic risk scores (GRS) and evaluated the effects of conventional risk factors, including family history of CRC, in combination with GRS on the risk of CRC in Koreans. This study included 187 cases (men, 133; women, 54) and 976 controls (men, 554; women, 422). GRS were calculated with most significantly associated single-nucleotide polymorphism with CRC through a genomewide association study. The area under the curve (AUC) increased by 0.5% to 5.2% when either counted or weighted GRS was added to a prediction model consisting of age alone (AUC 0.687 for men, 0.598 for women) or age and family history of CRC (AUC 0.692 for men, 0.603 for women) for both men and women. Furthermore, the risk of CRC significantly increased for individuals with a family history of CRC in the highest quartile of GRS when compared to subjects without a family history of CRC in the lowest quartile of GRS (counted GRS odds ratio [OR], 47.9; 95% confidence interval [CI], 4.9 to 471.8 for men; OR, 22.3; 95% CI, 1.4 to 344.2 for women) (weighted GRS OR, 35.9; 95% CI, 5.9 to 218.2 for men; OR, 18.1, 95% CI, 3.7 to 88.1 for women). Our findings suggest that in Koreans, especially in Korean men, GRS improve the prediction of CRC when considered in conjunction with age and family history of CRC.
Jo, Hey Sung,Boo, Yoon Jung,Lee, Eun Hee,Lee, Ji Sung Korean Association of Pediatric Surgeons 2014 소아외과 Vol.20 No.2
Purpose: Laparoscopic appendectomy (LA) has become a gold standard for children even in complicated appendicitis. The purpose of this study was to compare the postoperative surgical site infection rates between laparoscopic and open appendectomy (OA) group in pediatric complicated appendicitis. Methods: A total of 1,158 pediatric patients (age ${\leq}$ 15 years) underwent operation for appendicitis over a period of 8 years. Among these patients, 274 patients (23.7%) were diagnosed with complicated appendicitis by radiologic, operative and pathologic findings, and their clinical outcomes were retrospectively analyzed. Results: Of the 274 patients with complicated appendicitis, 108 patients underwent LA and 166 patients underwent OA. Patients in the LA group returned to oral intake earlier (1.9 days vs. 2.7 days; p<0.01) and had a shorter hospital stay (5.0 days vs. 6.3 days; p<0.01). However, rate of postoperative intra-abdominal infection (organ/space surgical site infection) was higher in the LA group (LA 15/108 [13.9%] vs. OA 12/166 [7.2%]; p<0.01). Readmission rate was also higher in the LA group (LA 9/108 [8.3%] vs. OA 3/166 [1.8%]; p<0.01). Conclusion: The minimally invasive laparoscopic technique has more advantages compared to the open procedure in terms of hospital stay and early recovery. However, intra-abdominal infection and readmission rates were higher in the laparoscopy group. Further studies should be performed to evaluate high rate of organ/space surgical infection rate of laparoscopic procedure in pediatric complicated appendicitis.
( Sang-jin Lee ),( Kang-jin Jo ),( Jin-wook Park ),( Myeong Woo Kim ),( Ji-hoo Kim ) 한국고무학회 2018 엘라스토머 및 콤포지트 Vol.53 No.3
This study was aimed at improving the white index (WI) to prepare thermally expandable microspheres for wallpaper. In particular, thermally expandable microspheres were prepared for different colloidal silica particle sizes to study thermal properties, foaming ratio, and WI. The spheres obtained from tiny colloidal silica were the best in terms of WI and yellowing. Additionally, thermogravimetric analysis results show that small colloidal silica particles are more likely to be adsorbed physically or chemically to the microsphere surface, thereby improving WI at higher temperatures.
CASE REPORT : A Rare Case of Ogilvie Syndrome Associated with Herpes Zoster
( Ji Hyun Kim ),( Suck Ho Lee ),( Gyeong Jae Na ),( Su Jin Lee ),( Yeong Geol Jo ),( Tae Hoon Lee ),( Il Kwun Chung ),( Sang Heum Park ),( Sun Joo Kim ) 대한장연구학회 2012 Intestinal Research Vol.10 No.4
Acute colonic pseudo-obstruction (Ogilvie syndrome) associated with herpes zoster is extremely rare, and few cases have been reported. An 81-year-old woman diagnosed with herpes zoster was referred for accompanying colonic ileus. The diameter of the cecum was 7 cm and a computed tomographic scan showed no definite obstructive cause. Because the patient showed minimal improvement with conservative treatment, endoscopic colonic decompression was performed successfully. Previous studies revealed that the treatment of Ogilvie syndrome associated with herpes zoster does not differ from that of other conditions, and the role of the varicella-zoster virus in this syndrome is unclear. Here, we present the first case of Ogilvie syndrome associated with herpes zoster in Korea, which was improved by endoscopic colonic decompression. (Intest Res 2012;10:379-382)
( Ji Eun Kim ),( Junkyung Choe ),( Jeong Hee Lee ),( Woong Bom Kim ),( Whan Cho ),( Ji Hong Ha ),( Ki Jin Kwon ),( Kook Il Han ),( Sung Hwan Jo ) 한국동물자원과학회(구 한국축산학회) 2016 한국축산학회지 Vol.58 No.4
Background: The Sapsaree (Canis familiaris) is a Korean native dog that is very friendly, protective, and loyal to its owner, and is registered as a natural monument in Korea (number: 368). To investigate large-scale gene expression profiles and identify the genes related to exercise-induced stress in the Sapsaree, we performed whole-transcriptome RNA sequencing and analyzed gene expression patterns before and after exercise performance. Results: We identified 525 differentially expressed genes in ten dogs before and after exercise. Gene Ontology classification and KEGG pathway analysis revealed that the genes were mainly involved in metabolic processes, such as programmed cell death, protein metabolic process, phosphatidylinositol signaling system, and cation binding in cytoplasm. The ten Sapsarees could be divided into two groups based on the gene expression patterns before and after exercise. The two groups were significantly different in terms of their basic body type (p ≤ 0.05). Seven representative genes with significantly different expression patterns before and after exercise between the two groups were chosen and characterized. Conclusions: Body type had a significant effect on the patterns of differential gene expression induced by exercise. Whole-transcriptome sequencing is a useful method for investigating the biological characteristics of the Sapsaree and the large-scale genomic differences of canines in general.