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Anti-quorum sensing and anti-biofilm formation activities of plant extracts from South Korea

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Asian Pacific Journal of Tropical Biomedicine 2018年第8期8卷 411-417页

作者： Okhee Choi Dong-Wan Kang Su Kyung Cho Yeyeong Lee Byeongsam Kang Juyoung Bae Seunghoe Kim jeong hoon Lee Seung Eun Lee Jinwoo Kim Institute of Agriculture & Life Science Gyeongsang National University Gyeonsangnam-do Agriculture Extension Services Department of Plant Medicine Gyeongsang National University Division of Applied Life Science Gyeongsang National University National Institute of Horticultural and Herbal Science Rural Development Administration

Objective: To investigate anti-quorum sensing(anti-QS) and anti-biofilm formation(antiBF) activities of the ethanol extracts of 388 plants. Methods: The anti-QS activity of the plant extracts was evaluated by disc-diffusion assays using the bio-reporter strain, Chromobacterium violaceum CV017. Pseudomonas aeruginosa PAO1, Yersinia enterocolitica ATCC 9610, and Agrobacterium tumefaciens C58, which possess QS systems, were used to evaluate the antiBF activity of the plant extracts. Results: Among 388 plant extracts, the Cornus controversa(C. controversa) and Cynanchum wilfordii extracts exhibited the strongest anti-QS activity. The C. controversa extract exhibited anti-BF activity against Pseudomonas aeruginosa, Yersinia enterocolitica and Agrobacterium tumefaciens, whereas the Cynanchum wilfordii extract exhibited no anti-BF activity against Pseudomonas aeruginosa. In addition, the C. controversa extract suppressed soft rot of cabbage. Conclusions: The C. controversa extract inhibits bacterial QS and BF, and is capable of controlling soft rot. Therefore, this extract has potential for the prevention and treatment of bacterial infections and for the development of alternatives to antibiotics.

关键词： Plant extracts Quorum sensing Biofilm formation Cornus controversa

Endoscopic removal of gastric ectopic pancreas:An initial experience with endoscopic submucosal dissection

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World Journal of Gastroenterology 2010年第36期16卷 4589-4593页

作者： Dong Yup Ryu Gwang Ha Kim Do Youn Park Bong Eun Lee Jae hoon Cheong Dong Uk Kim Hyun Young Woo jeong Heo Geun Am Song Department of Internal Medicine Pusan National University School of Medicine and Medical Research InstitutePusan National University HospitalBusan 602-739South Korea Department of Pathology Pusan National University School of MedicineBusan 602-739South Korea

AIM:To evaluate the therapeutic usefulness and safety of endoscopic resection in patients with gastric ectopic ***:A total of eight patients with ectopic pancreas were *** of them underwent endoscopic ultrasonography before endoscopic ***-scopic resection was performed by two methods:endo-scopic mucosal resection(EMR)by the injection-and-cut technique or endoscopic mucosal dissection(ESD).RESULTS:We planned to perform EMR in all eight cases but EMR was successful in only four *** the other four cases,saline spread into surrounding normal tissues and the lesions becameattened,which made it impossible to remove them by *** four cases,we performed ESD and removed the lesions without any ***:If conventional EMR is difficult to remove gastric ectopic pancreas,ESD is a feasible alternative method for successful removal.

关键词： Ectopic pancreas Endoscopic resection Endoscopic ultrasonography

Hemophagocytic lymphohistiocytosis triggered by relapsing polychondritis:A case report

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World Journal of Orthopedics 2024年第8期15卷 813-819页

作者： Mi-Ran Han jeong-Hwan Hwang Seungah Cha So-Yeon Jeon Kyu Yun Jang Namsu Kim Chang-hoon Lee Department of Internal Medicine Jeonbuk National University Medical SchoolJeonju 54907South Korea Department of Pathology Jeonbuk National University Medical SchoolJeonju 54907South Korea Department of Laboratory Medicine Jeonbuk National University Medical SchoolJeonju 54907South Korea

BACKGROUND Hemophagocytic lymphohistiocytosis(HLH)is a rare,life-threatening disorder caused by abnormal histiocytes and T cell *** adults,it is predominantly associated with infections,cancers,and autoimmune *** polychondritis(RP),another rare disease,is diagnosed based on symptoms without specific tests,featuring cartilage inflammation characterized by swelling,redness,and pain,rarely inducing *** SUMMARY A 74-year-old woman visited the emergency room with a fever of 38.6℃.Blood tests,cultures,and imaging were performed to evaluate *** showed increased fluorescent antinuclear antibody levels and mild cytopenia,with no other specific *** revealed lymph node enlargement was observed;however,biopsy results were *** re-evaluation of the physical exam,inflammatory signs suggestive of RP were observed in the ears and nose,prompting a tissue biopsy for ***,persistent fever accompanied by cytopenia prompted a bone marrow examination,revealing hemophagocytic *** finding no significant results in blood culture,viral markers,and tissue examination of enlarged lymph nodes,HLH was diagnosed by *** involved methylprednisolone followed by *** two months,bone marrow examination confirmed resolution of hemophagocytosis,with normalization of hyperferritinemia and *** Thorough physical examination enabled diagnosis and treatment of HLH trig gered by RP in patients presenting with fever of unknown origin.

关键词： Hemophagocytic lymphohistiocytosis Relapsing polychondritis Autoimmune disease Fever of unknown origin Steroid Case report

Alterations of Gefitinib Pharmacokinetics by Co-administration of Herbal Medications in Rats

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Chinese Journal of Integrative Medicine 2018年第6期24卷 460-466页

作者： Kwon-Yeon Weon Min Gi Kim Soyoung Shin Tae Hwan Kim Sang hoon Joo Eunsook Ma Seok Won jeong Sun Dong Yoo Yu Seok Youn Beom Soo Shin College of Pharmacy Catholic University of Daegu School of Pharmacy Sungkyunkwan University College of Pharmacy Wonkwang University

Objective： To evaluate the potential pharmacokinetic interactions of the anticancer agent gefitinib （Iressae） and the oriental medications Guipi Decoction （归脾汤, GPD, Guibi-tang in Korean） and Bawu Decoction （八物汤, BWD, Palmul-tang in Korean）. Methods： Methylceliulose （MC, control）, GPD （1,200 mg/kg）, or BWD （6,000 mg/kg） was orally administered to rats either as a single dose or multiple doses prior to gefitinib administration. To examine the effects of a single dose of the herbal medicines, gefitinib （10 mg/kg） was orally administered after 5 min or 1 h of MC or the herbal medicine pretreatments. To examine the effects of the multiple doses of the herbal medicines, gefltinib （10 mg/kg） was orally administered following 7 consecutive days of the administration of MC or each herbal medicine. The plasma concentrations of gefitinib were determined with liquid chromatography-tandem mass spectrometry assay. The plasma concentration-time profiles of gefitinib were analyzed with a noncompartmental analysis. Results： Gefitinib was rapidly absorbed and showed a mono- exponential decline with an elimination half-life of 3.7-4.1 h. The pharmacokinetics of gefitinib was not affected by GPD pretreatment. However, a significantly lower maximum plasma concentration （Crux, P〈0.05） and area under the curve （P〈0.05）, and a delayed time to reach Cmax （Tmax, P〈0.01） were observed in both single- and multiple- dose BWD-pretreated rats compared with the control rats. Conclusions： BWD and not GPD might delay and interfere with gefitinib absorption. Further evaluations of the clinical significance of these findings are needed.

关键词： herb-drug interaction pharmacokinetics gefitinib Guipi Decoction Bawu Decoction

Approaching 18% efficiency of ternary organic photovoltaics with wide bandgap polymer donor and well compatible Y6 : Y6-1O as acceptor

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National Science Review 2021年第8期8卷 20-29页

作者： Xiaoling Ma Anping Zeng Jinhua Gao Zhenghao Hu Chunyu Xu Jae hoon Son Sang Young jeong Caixia Zhang Mengyang Li Kai Wang He Yan Zaifei Ma Yongsheng Wang Han Young Woo Fujun Zhang Key Laboratory of Luminescence and Optical Information Ministry of EducationBeijing Jiaotong University Organic Optoelectronic Materials Laboratory Department of ChemistryCollege of ScienceKorea University Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of Technology Department of Chemistry The Hong Kong University of Science and Technology Center for Advanced Low-Dimension Materials State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringDonghua University

A series of ternary organic photovoltaics(OPVs) are fabricated with one wide bandgap polymer D18-Cl as donor, and well compatible Y6 and Y6-1O as acceptor. The open-circuit-voltage(V)of ternary OPVs is monotonously increased along with the incorporation of Y6-1O, indicating that the alloy state should be formed between Y6 and Y6-1O due to their excellent compatibility. The energy loss can be minimized by incorporating Y6-1 O, leading to the VOC improvement of ternary OPVs. By finely adjusting the Y6-1O content, a power conversion efficiency of 17.91% is achieved in the optimal ternary OPVs with 30 wt% Y6-1O in acceptors, resulting from synchronously improved short-circuit-current density(JSC) of 25.87 mA cm, fill factor(FF) of 76.92% and VOC of 0.900 V in comparison with those of D18-Cl : Y6 binary OPVs. The JSC and FF improvement of ternary OPVs should be ascribed to comprehensively optimal photon harvesting, exciton dissociation and charge transport in ternary active layers. The more efficient charge separation and transport process in ternary active layers can be confirmed by the magnetophotocurrent and impedance spectroscopy experimental results, respectively. This work provides new insight into constructing highly efficient ternary OPVs with well compatible Y6 and its derivative as acceptor.

关键词： organic photovoltaics power conversion efficiency ternary strategy photon harvesting morphology regulation

Cerebral and pulmonary embolisms after transcatheter arterial chemoembolization for hepatocellular carcinoma

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World Journal of Gastroenterology 2008年第30期14卷 4834-4837页

作者： Chang Soo Choi Ki hoon Kim Geom Seog Seo Eun Young Cho Hyo jeong Oh Suck Chei Choi Tae Hyeon Kim Haak Cheoul Kim Byung Suk Roh Department of Internal Medicine and Digestive Disease Research Institute Wonkwang University School of Medicine Department of Radiology Wonkwang University School of Medicine

A cerebral lipiodol embolism is an extremely rare complication of transcatheter arterial chemoembolization for hepatocellular carcinoma. We present a case of cerebral lipiodol embolism that occurred after the third ar... 详细信息

关键词： Transcatheter arterial chemoembolization Cerebral embolism Complication Hepatocellular carcinoma Lipiodol

Self-supported VO_(2) on polydopamine-derived pyroprotein-based fibers for ultrastable and flexible aqueous zinc-ion batteries

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Carbon Energy 2024年第7期6卷 1-13页

作者： jeong Seok Yeon Sul Ki Park Shinik Kim Santosh VMohite Won Il Kim Gun Jang Hyun-Seok Jang Jiyoung Bae Sang Moon Lee Won GHong Byung hoon Kim Yeonho Kim Ho Seok Park School of Chemical Engineering College of EngineeringSungkyunkwan UniversityGyeonggi-doRepublic of Korea Department of Engineering University of CambridgeCambridgeUK Department of Applied Chemistry Konkuk UniversityChungjuRepublic of Korea Department of Chemistry Ulsan National Institute of Science and Technology(UNIST)College of Natural SciencesUlsanRepublic of Korea Department of Physics Incheon National UniversityIncheonRepublic of Korea Intelligent Sensor Convergence Research Center Incheon National UniversityIncheonRepublic of Korea Institute of Basic Science Incheon National UniversityIncheonRepublic of Korea Division of Material Analysis and Research Korea Basic Science InstituteDaejeonRepublic of Korea

A conventional electrode composite for rechargeable zinc-ion batteries(ZIBs)includes a binder for strong adhesion between the electrode material and the current ***,the introduction of a binder leads to electrochemical inactivity and low electrical conductivity,resulting in the decay of the capacity and a low rate *** present a binder-and conducting agent-free VO_(2) composite electrode using in situ polymerization of dopamine on a flexible current collector of pyroprotein-based *** as-fabricated composite electrode was used as a substrate for the direct growth of VO_(2) as a self-supported form on polydopamine-derived pyroprotein-based fibers(pp-fibers@VO_(2)(B)).It has a high conductivity and flexible nature as a current collector and moderate binding without conventional binders and conducting agents for the VO_(2)(B) *** addition,their electrochemical mechanism was *** energy storage is induced by Zn^(2+)/H^(+) coinsertion during discharging,which can be confirmed by the lattice expansion,the formation of by-products including Zn_(x)(OTf)_(y)(OH)_(2x−y)·nH_(2)O,and the reduction of V^(4+)to V^(3+).Furthermore,the assembled Zn//pp-fibers@VO_(2)(B) pouch cells have excellent flexibility and stable electrochemical performance under various bending states,showing application possibilities for portable and wearable power sources.

关键词： aqueous battery binder free conducting agent‐free flexible electrode zinc‐ion battery

Cultivation characteristics and flavonoid contents of wormwood (Artemisia montana Pamp.)

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Journal of Agricultural Chemistry and Environment 2013年第4期2卷 117-122页

作者： Yong Joo Kim jeong-hoon Lee Sun-Ju Kim Department of Bio-Environmental Chemistry Chungnam National University Daejeon South Korea Department of Herbal Crop Research NIHHS RDA Eumseong South Korea

The aim of this study was to establish the optimum harvesting time and the content of flavonoids in the leaves, stems, and roots of Artemisia montana Pamp. A. montana was monitored from June to October in 2012. The yield of A. montana at high density (30 × 10 cm) was higher than that of A. montana at low density (30 × 20 and 30 cm). Yield in terms of dry weight was increased with an extended growth period and development stage. High yield achieved at 2580 and 2757 kg?10 a?1 in September and October, respectively. Among the leaves, stems, and underground plant organs, jaceosidin and eupatilin were mainly detected in the leaves, and the highest levels were observed in June, at values of 66.6 and 158.2 mg?100 g?1, respectively. In contrast, apigenin was the major compound detected in the underground plant organs, with levels ranging from 21.2 to 29.5 mg?100 g?1 until September. Therefore, optimal harvest times were between September and October, generating a high yield and adding economic value although a higher level of total flavonoids was observed in crops harvested in June.

关键词： Artemisia montana Flavonoids Harvest Time Plant Density

Acute liver injury induces expression of FGF23 in hepatocytes via orphan nuclear receptor ERRγ signaling

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Genes & Diseases 2023年第3期10卷 679-682页

作者： Yoon Seok Jung Yong-hoon Kim Kamalakannan Radhakrishnan Jung-Ran Noh Jung Hyeon Choi Hyo-Jin Kim Jae-Ho jeong Steven Dooley Chul-Ho Lee Hueng-Sik Choi School of Biological Sciences and Technology Chonnam National UniversityGwangju 61186Republic of Korea Laboratory Animal Resource Center Korea Research Institute of Bioscience and Biotechnology125 Gwahak-roYuseong-guDaejeon 34141Republic of Korea Department of Functional Genomics KRIBB School of BioscienceKorea University of Science and Technology(UST)Daejeon 34113Republic of Korea Combinatorial Tumor Immunotherapy MRC Chonnam National University Medical SchoolHwasun-gunJeonnam 58128Republic of Korea Department of Microbiology Chonnam National University Medical SchoolGwangju 61186Republic of Korea Molecular Hepatology Section Medical Faculty MannheimHeidelberg University69117 HeidelbergGermany

Fibroblast growth factor 23(FGF23)is an osteocyte-and osteoblast-derived hormone that primarily regulates phosphate and vitamin D *** FGF23 levels are abnormally increased in pathological conditions like acute or chronic kidney injury,resulting in disease progression as well as increased rates of morbidity and mortality.^(1) However,FGF23 production in acute liver injury is not fully *** this study.

关键词： FGF23 acute vitamin