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Inhibitory Effects of Chicken Egg Yolk Antibody on Infection of Escherichia coli in Macrophage
Jin-Ju Lee,Dong-Hyeok Kim,Jeong-Ju Lim,Dae-Geun Kim,Gon-Sup Kim,Won-Gi Min,Hu-Jang Lee,Man-Hee Rhee,Hong-Hee Chang,Suk Kim 경상대학교 농업생명과학연구원 2012 농업생명과학연구 Vol.46 No.2
The present study evaluated the potential use of immunoglobulin prepared from egg yolk of chickens immunized with Escherichia coli K88 (IgY-Ec) in the control of E. coli K88 infection in RAW 264.7 murine macrophage. The binding activity of IgY-Ec against E. coli K88 surface protein was more specific and increased than control IgY. In infection assay of E. coli in macrophage, the specific IgY-Ec to E. coli K88 remarkably inhibited the phagocytic activity comparing to nonspecific IgY (p<0.001). In adherence assay, bacterial adhesion on macrophage cells was definitely reduced by preincubation of IgY-Ec compared with nonspecific IgY (p<0.05). These findings suggested that IgY-Ec have the protective effects against pathogens and IgY-based diets may have potential benefits for preventing or treating various infections in domestic animals.
Stenotrophomonas ginsengisoli sp. nov., isolated from a ginseng field
Kim, Ho-Bin,Srinivasan, Sathiyaraj,Sathiyaraj, Gayathri,Quan, Lin-Hu,Kim, Se-Hwa,Bui, Thi Phuong Nam,Liang, Zhi-qi,Kim, Yeon-Ju,Yang, Deok-Chun Microbiology Society 2010 International journal of systematic and evolutiona Vol.60 No.7
<P>A Gram-negative, non-spore-forming, rod-shaped bacterium, designated strain DCY01<SUP>T</SUP>, was isolated from soil from a ginseng field in South Korea and was characterized in order to determine its taxonomic position. 16S rRNA gene sequence analysis revealed that strain DCY01<SUP>T</SUP> belonged to the <I>Gammaproteobacteria</I> and was most closely related to <I>Stenotrophomonas koreensis</I> KCTC 12211<SUP>T</SUP> (98.4 % similarity), <I>Stenotrophomonas humi</I> R-32729<SUP>T</SUP> (97.2 %), <I>Stenotrophomonas terrae</I> R-32768 (97.1 %), <I>Stenotrophomonas maltophilia</I> DSM 50170<SUP>T</SUP> (96.9 %) and <I>Stenotrophomonas nitritireducens</I> DSM 12575<SUP>T</SUP> (96.8 %). Chemotaxonomic analyses revealed that strain DCY01<SUP>T</SUP> possessed a quinone system with Q-8 as the predominant compound, and iso-C15 : 0 (28.2 %), C16 : 0 10<I>-</I>methyl (13.2 %), iso-C15 : 1 F (10.8 %) and C15 : 0 (7.5 %) as major fatty acids, corroborating assignment of strain DCY01<SUP>T</SUP> to the genus <I>Stenotrophomonas</I>. The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol and diphosphatidylglycerol. The results of DNA-DNA hybridization and physiological and biochemical tests clearly demonstrated that strain DCY01<SUP>T</SUP> represents a species distinct from recognized <I>Stenotrophomonas</I> species. Based on these data, DCY01<SUP>T</SUP> (=KCTC 12539<SUP>T</SUP>=NBRC 101154<SUP>T</SUP>) should be classified as the type strain of a novel species of the genus <I>Stenotrophomonas</I>, for which the name <I>Stenotrophomonas ginsengisoli</I> sp. nov. is proposed.</P>
Kim, Gon Sup,Kim, Dong Hyeok,Lim, Jeong Ju,Lee, Jin Ju,Han, Dae Yong,Lee, Whi Min,Jung, Won Chul,Min, Won Gi,Won, Chung Gil,Rhee, Man Hee,Lee, Hu Jang,Kim, Suk Pharmaceutical Society of Japan 2008 BIOLOGICAL & PHARMACEUTICAL BULLETIN Vol.31 No.11
<P>Salmonellosis is a major bacterial zoonosis that causes a variety of disease syndromes, from self-limiting enteritis to fatal infection in animals and food-borne infection and typhoid fever in humans. Recently, the emergence of multidrug-resistant strains of <I>Salmonella</I> sp. has caused more serious problems in public health. The present study investigated the antibacterial effects of <I>Houttuynia cordata</I> water extract (HCWE) against murine salmonellosis. In RAW 264.7 cells, there was no detectable cytotoxic effect of HCWE at any concentration between 25 and 100 μg/ml after 8-h incubation. The antibacterial activity of HCWE was then examined in a <I>Salmonella enterica</I> serovar (<I>Salmonella typhimurium</I>), and was found to increase in a dose-dependent manner at concentrations from 25 to 100 μg/ml during 8-h incubation. HCWE also affected RAW 264.7 cells including morphologic change and bacterial uptake, but there was no significant difference in bacterial replication in RAW 264.7 cells. With HCWE alone, nitric oxide (NO) production by RAW 264.7 cells did not increase, but when RAW 264.7 cells were infected by <I>S. typhimurium</I>, with or without HCWE, NO production with HCWE was 2-fold higher than that without HCWE. Treatment with HCWE did not affect inducible NO synthase (iNOS) mRNA expression by RAW 264.7 cells, but when RAW 264.7 cells with HCWE were infected by <I>S. typhimurium</I>, iNOS mRNA expression was increased during 8-h incubation. Furthermore, HCWE showed virulence reduction effects in <I>S. typhimurium</I>-infected BALB/c mice. After a lethal dose of <I>S. typhimurium</I>, the mortality rate in the HCWE untreated group was 100% at 7 d, but the HCWE 25, 50, and 100 μg/ml groups survived until 11, 17, and 23 d, respectively. These data suggest that HCWE is stable and beneficial in the treatment of bacterial infection including intracellularly replicating pathogens and may solve antimicrobial misuse and overuse.</P>
Kim, Bong Hoon,Lee, Duck Hyun,Kim, Ju Young,Shin, Dong Ok,Jeong, Hu Young,Hong, Seonki,Yun, Je Moon,Koo, Chong Min,Lee, Haeshin,Kim, Sang Ouk WILEY‐VCH Verlag 2011 Advanced Materials Vol.23 No.47
<P>Mussel‐inspired block copolymer lithography is reported on page 5618 by Haeshin Lee, Sang Ouk Kim, and co‐workers. Mussel‐inspired poly‐dopamine coating enables the organic surface energy modification of low surface energy materials, such as Teflon, graphene, and gold, which is required for block copolymer lithography. Further pattern transfer generates unconventional nano structures, such as Teflon nanowires, nano‐patterned graphene, and vertical carbon nanotubes directly grown on Au substrates. The image shows an uncoated (left) and a polydopamine‐coated (right) cherry tomato. </P>
Clinical analysis and review of literature on pilomatrixoma in pediatric patients
Hu, Ju Long,Yoo, Hyokyung,Kwon, Sung Tack,Kim, Sukwha,Chung, Jee Hyeok,Kim, Hyeonwoo,Kim, Jinhyun,Yu, Na Hee,Kim, Byung Jun Korean Cleft Palate-Craniofacial Association 2020 Archives of Craniofacial Surgery Vol.21 No.5
Background: Pilomatrixoma is a benign tumor that originates from the hair follicle matrix. It usually presents as a hard, slow growing, solitary mass that can be easily misdiagnosed as other skin masses. The aim of this study was to clinically analyze a case series of pilomatrixoma in pediatric patients from Korea. Methods: A total of 165 pediatric patients from 2011 to 2018 with a histological diagnosis of pilomatrixoma were included. A retrospective review was performed using the electronic medical records, including patient demographics, number and location of the mass, clinical and imaging presentation, and postoperative outcomes. Results: There were 61 male and 104 female patients with 152 solitary and 13 multiple pilomatrixomas. Among solitary pilomatrixomas, the lesion commonly occurred in the head and neck (84.2%), followed by upper limbs (11.2%), lower limbs (3.3%), and trunk (1.3%). The pilomatrixoma lesion presented as the following types based on our clinical classification: mass (56.02%), pigmentation (25.31%), mixed (12.65%), ulceration (4.82%), and keloid-like (1.2%). Ultrasonography showed a high positive predictive value (95.56%). There were no specific complications observed except for two cases of recurrence. Conclusion: Pilomatrixoma has various clinical feature presentations and commonly occurs in the head and neck. Ultrasonography is a helpful diagnostic tool. Surgical removal of the lesion is the main treatment method with a low recurrence rate.
Kim, Dong Hyeok,Lim, Jeong Ju,Lee, Jin Ju,Kim, Dae Geun,Lee, Hu Jang,Min, Wongi,Kim, Kwang Dong,Chang, Hong Hee,Rhee, Man Hee,Watarai, Masahisa,Kim, Suk Elsevier 2012 Veterinary microbiology Vol.158 No.3
<P><B>Abstract</B></P><P><I>Brucella abortus</I>, the causative agent of brucellosis, can survive and replicate within host cells. Understanding bacterial virulence factors and bacteria–host cell interactions is critical for controlling brucellosis, yet very little is known about the virulence strategies and signaling pathways activated in phagocytes during infection to ensure their growth and survival. <I>B. abortus</I> was mutagenized by mini-Tn5Km2 transposon mutagenesis to identify virulence genes related to the internalization and intracellular replication of the bacteria. Of the total 2300 mutants used to infect HeLa cells, 23 mutants defective for intercellular growth and the mutated genes were identified. Sequence analysis of DNA flanking the transposon showed various insertion sites in bacterial genes that might be associated with virulence, including genes associated with lipoproteins, amino acid metabolism, translation, transcription, carbohydrate transport, coenzyme transport, inorganic ion transport, energy metabolism, membrane transport, and cell wall/membrane biogenesis. Moreover, mutants were classified into class I, class II and class III as higher, similar, and lower internalization, respectively, into HeLa cells. Furthermore, defective mutants for intracellular growth in HeLa cells were found to be defective in RAW 264.7 cells. Taken together, we suggest that the identified virulence associated genes might contribute to the intracellular growth and survival of <I>B. abortus</I> in phagocytes.</P>
( Hu Li ),( Seung-woon Rha ),( Byoung Geol Choi ),( Min Suk Shim ),( Se Yeon Choi ),( Cheol Ung Choi ),( Eung Ju Kim ),( Dong Joo Oh ),( Byung Ryul Cho ),( Moo Hyun Kim ),( Doo-il Kim ),( Myung-ho Jeo 대한내과학회 2018 The Korean Journal of Internal Medicine Vol.33 No.4
Background/Aims: Transradial intervention (TRI) is becoming the preferred method over transfemoral intervention (TFI) because TRI is associated with lower incidence of major bleeding and vascular complications. However, there has been limited published data regarding the clinical outcomes of TRI versus TFI in Korean patients with ST-elevation myocardial infarction (STEMI). Methods: A total of 689 consecutive STEMI patients who underwent primary percutaneous coronary intervention (PCI) with drug-eluting stents (DESs) from January to December of 2009 at nine university hospitals were enrolled in this study. Mid-term angiographic and 12-month cumulative clinical outcomes of the TRI group (n = 220, 31.9%) were compared to those of the TFI group (n = 469, 28.1%). Results: After propensity score matching, in-hospital complications and the 12-month major clinical outcomes during follow-up in the two groups were similar to each other. However, the incidence rates of repeat revascularization (6.4% vs. 0.5%, p = 0.003), target vessel revascularization (6.4% vs. 0.5%, p = 0.003), and major adverse cardiac events (MACE; 11.6% vs. 4.6%, p = 0.018) in the TFI group were higher than those in the TRI group during the 12-month of follow-up. Conclusions: In our study, TRI in STEMI patients undergoing primary PCI with DESs was associated with lower incidence of access site hematoma, 12-month repeat revascularization, and MACE compared to TFI. Therefore, TRI might play an important role in reducing bleeding complications while improving major clinical outcomes in STEMI patients undergoing primary PCI with DESs.