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Therapeutic effect of DA-9601 on chronic reflux gastritis induced by sodium taurocholate in rats

World Journal of Gastroenterology 2005年第47期11卷 7430-7435页

作者： Tae Young Oh Chang Yell Shin Yong Sung Sohn Dong Hwan Kim Byoung Ok Ahn eun bang lee Cho Hyun Park Dong-A Pharmaceutical Research Institute YonginKorea Department of General Surgery Catholic University of MedicineSeoulKorea

AIM: To investigate the therapeutic effects of DA-9601 on sodium taurocholate (TCA)-induced chronic reflux gastritis in SD ***: In this study, we have investigated the therapeutic effects of DA-9601 on chronic erosive and atrophic gastritis induced by 6 mo of TCA administration (5 mmol/L in drinking water) in SD rats. RESULTS: Four weeks of DA-9601 administration (0.065%, 0.216% in rat chow), following the withdrawal of TCA treatment, resulted in a significant decrease in total length of erosions in rats in a dose-dependent manner. Furthermore, the indicators of atrophic gastritis, such as reduced mucosal thickness and reduction in the number of parietal cells, were improved by the administration of DA-9601 in a dose-related manner. DA-9601 also attenuated inflammatory cell infiltration and the proliferation of collagenous fiber in the gastric mucosa. The improvement in the reduction of the gastric mucus was observed in the rats receiving a high dose of DA-9601 (0.216%). The therapeutic effect of DA-9601 on experimental chronic erosive gastritis was superior to that of rebamipide (1.08% in rat chow). Biochemical analyses showed increased mucosal prostaglandin E2 and reduced glutathione levels by DA-9601 treatment. CONCLUSION: We suggest that DA-9601 is apromising agent for the treatment of chronic erosive and atrophic gastritis with an etiological factor of bile reflux. Increasedmucosal prostaglandin E2 and reduced glutathione by DA-9601 treatment may be therapeutic mechanisms for chronic erosive and atrophic gastritis.

关键词： DA-9601 Reflux gastritis Erosive gastritis Atrophic gastritis Sodium taurocholate

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Ethanol extract from Gynostemma pentaphyllum ameliorates dopaminergic neuronal cell death in transgenic mice expressing mutant A53T human alpha-synuclein

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Neural Regeneration Research 2020年第2期15卷 361-368页

作者： Hyun Jin Park Ting Ting Zhao Seung Hwan Kim Chong Kil lee bang Yeon Hwang Kyung eun lee Myung Koo lee Department of Pharmacy College of PharmacyChungbuk National UniversityCheongjuRepublic of Korea 2Research Center for Bioresource and Health College of PharmacyChungbuk National UniversityCheongjuRepublic of Korea Department of Social Physical Education Songwon UniversityGwangjuRepublic of Korea

Gynostemma(G.) pentaphyllum(Cucurbitaceae) contains various bioactive gypenosides. Ethanol extract from G. pentaphyllum(GP-EX) has been shown to have ameliorative effects on the death of dopaminergic neurons in animal models of Parkinson’s disease(PD) induced by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-and 6-hydroxydopamine. PD patients exhibit multiple symptoms, so PD-related research should combine neurotoxin models with genetic models. In the present study, we investigated the ameliorative effects of GP-EX, including gypenosides, on the cell death of dopaminergic neurons in the midbrain of A53 T α-synuclein transgenic mouse models of PD(A53 T). Both GP-EX and gypenosides at 50 mg/kg per day were orally administered to the A53 T mice for 20 weeks.α-Synuclein-immunopositive cells and α-synuclein phosphorylation were increased in the midbrain of A53 T mice, which was reduced following treatment with GP-EX. Treatment with GP-EX modulated the reduced phosphorylation of tyrosine hydroxylase, extracellular signal-regulated kinase(ERK1/2), Bcl-2-associated death promoter(Bad) at Ser112, and c-Jun N-terminal kinase(JNK1/2) due to α-synuclein overexpression. In the A53 T group, GP-EX treatment prolonged the latency of the step-through passive avoidance test and shortened the transfer latency of the elevated plus maze test. Gypenosides treatment exhibited the effects and efficacy similar to those of GP-EX. Taken together, GP-EX, including gypenosides, has ameliorative effects on dopaminergic neuronal cell death due to the overexpression of α-synuclein by modulating ERK1/2, Bad at Ser112, and JNK1/2 signaling in the midbrain of A53 T mouse model of PD. Further studies are needed to investigate GP-EX as a treatment for neurodegenerative synucleinopathies, including PD. This study was approved by the Animal Ethics Committee of Chungbuk National University(approval No. CBNUA-956-16-01) on September 21, 2016.

关键词： A53T α-synuclein genetic mice ERK1/2 gynostemma pentaphyllum gypenosides Parkinson’s disease retention transfer latency time

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Evaluating the role of large language models in inflammatory bowel disease patient information

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World Journal of Gastroenterology 2024年第29期30卷 3538-3540页

作者： eun Jeong Gong Chang Seok bang Department of Internal Medicine Hallym University College of MedicineChuncheon 24253Gangwon-doSouth Korea

This letter evaluates the article by Gravina et al on ChatGPT’s potential in providing medical information for inflammatory bowel disease *** promising,it highlights the need for advanced techniques like reasoning+action and retrieval-augmented generation to improve accuracy and *** that simple question and answer testing is insufficient,it calls for more nuanced evaluation methods to truly gauge large language models’capabilities in clinical applications.

关键词： Crohn’s disease Ulcerative colitis Inflammatory bowel disease Chat generative pre-trained transformer Large language model Artificial intelligence

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Polygonal multi-polymorphed Li4Ti5Oi2@rutile TiO2 as anodes in lithium-ion batteries

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Nano Research 2019年第4期12卷 897-904页

作者： Chang Hyun Hwang Hee-eun Kim Inho Nam Jin Ho bang Department ofBionano Technology Hanyang University 55 Hanyangdaehak-ro Sangnok-gu Ansan Gyeonggi-do 15588 Republic of Korea School of Chemical Engineering & Materials Science Chung-Ang University 84 Heukseok-ro Dongjak-gu Seoul 06974 Republic of Korea Department of Chemical and Molecular Engineering Hanyang University 55 Hanyangdaehak-ro Sangnok-gu Ansan Gyeonggi-do 15588 Republic of Korea

Li4Ti50i2 (LTO) has attracted considerable attention in lithium-ion battery (LIB) applications because of its favorable characteristics as an anode material. Despite its promise, the widespread use of LTO is still limited primarily due to its intrinsically poor electric and ionic con ductivities and high surface reactivity. To address these issues, we desig ned polyg onal nano architectures composed of various Li-Ti oxide crystal polymorphs by a facile synthesis route. Depending on the pH condition, this synthesis approach yields multi-polymorphed Li-Ti oxides where the interior is dominantly composed of a Li-rich phase and the exterior is a Li-deficient (or Li-free) phase. As one of these variations, a polygonal LTO-rutile TiO2 structure is formed. The rutile TiO2 on the surface of this LTO composite significantly improves the kinetics of Li^+ insertion/extraction because the channel along the o-axis in TQ2 provides a Li^+ highway due to the significantly low energy barrier for Li^+ diffusion. Moreover, the presenee of rutile TiO2, which is less reactive with a carbonate-based electrolyte, ensures Iong-term stability by suppress)ng the undesirable interfacial reaction on LTO.

关键词： micro-polygon structure Li-Ti oxide multi-polymorphs Li4Ti5Oi2@ rutile TiO2 anode lithium-ion batteries

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A lipid nanoparticle platform incorporating trehalose glycolipid for exceptional mRNA vaccine safety

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Bioactive Materials 2024年第8期38卷 486-498页

作者： Seo-Hyeon Bae Soyeon Yoo Jisun lee Hyo-Jung Park Sung Pil Kwon Harin Jin Sang-In Park Yu-Sun lee Yoo-Jin bang Gahyun Roh Seonghyun lee Sue Bean Youn In Woo Kim Ho Rim Oh Ashraf K.El-Damasy Gyochang Keum Hojun Kim Hyewon Youn Jae-Hwan Nam eun-Kyoung bang Department of Medical and Biological Sciences The Catholic University of KoreaGyeonggi-doBucheonRepublic of Korea BK Four Department of Biotechnology The Catholic University of KoreaGyeonggi-doBucheonRepublic of Korea Center for Brain Technology Brain Science InstituteKorea Institute of Science and Technology(KIST)Seoul02792Republic of Korea Center for Advanced Biomolecular Recognition Korea Institute of Science and Technology(KIST)Seoul02792Republic of Korea Division of Bio-Medical Science and Technology KIST SchoolUniversity of Science and Technology(UST)SeoulRepublic of Korea SML Biopharm Gwangmyeong14353Republic of Korea KHU-KIST Department of Converging Science and Technology Graduate SchoolKyung Hee UniversitySeoul02447Republic of Korea Cancer Research Institute Seoul National University College of MedicineSeoul03080Republic of Korea Department of Nuclear Medicine Cancer Imaging CenterSeoul National University HospitalSeoul03080Republic of Korea

The rapid development of messenger RNA(mRNA)vaccines formulated with lipid nanoparticles(LNPs)has contributed to control of the COVID-19 ***,mRNA vaccines have raised concerns about their potential toxicity and clinical safety,including side effects,such as myocarditis,anaphylaxis,and *** this study,we investigated the potential of trehalose glycolipids-containing LNP(LNP S050L)to reduce the risks associated with ionizable *** glycolipids can form hydrogen bonds with polar biomolecules,allowing the formation of a stable LNP structure by replacing half of the ionizable *** efficacy and safety of LNP S050L were evaluated by encapsulating the mRNA encoding the luciferase reporter gene and measuring gene expression and organ toxicity,***,mice immunized with an LNP S050L-formulated mRNA vaccine expressing influenza hemagglutinin exhibited a significant reduction in organ toxicity,including in the heart,spleen,and liver,while sustaining gene expression and immune efficiency,compared to conventional LNPs(Con-LNPs).Our findings suggest that LNP S050L,a trehalose glycolipid-based LNP,could facilitate the development of safe mRNA vaccines with improved clinical safety.

关键词： Trehalose glycolipid Lipid nanoparticle mRNA vaccine Toxicity Immunogenicity

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Oxidative Stability of Green Tea Extract-Enriched Rice Bran Oil During Storage

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茶叶 2013年第4期39卷 370-375页

作者： Anggi Hayu Hapsari Sung-Hee lee Jong-bang eun Department of Food Science and Technology and Functional Food Research Center Chonnam National University Department of Food Nutrition and Culinary Chosun College of Science and Technology

Adding green tea extract to rice bran oil was expected to improve its oxidative stability,so this study was conducted to investigate oxidative stability of green tea extract-enriched rice bran oil(RBOG) during storage at 60℃ for 15 days compared to rice bran oil(RBO),olive(OL),canola(CN),and grape-seed oil(GS).Acid values did not increase during storage,and the highest value was found for *** peroxide values of RBOG,RBO,CN,OL,and GS increased for up to 15 *** highest average rate constant for the change in peroxide value was found for RBO(0.282).TBARS increased continually during storage of RBOG,RBO,CN,and OL;however,the value increased for up to 9 days and then decreased for *** highest average rate constant of change in TBARS was found for ***,the results suggest that green tea extract improves oxidative stability of rice bran oil.

关键词：氧化稳定性绿茶提取物米糠油贮藏期间过氧化值速率常数葡萄籽油储存期

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SERKs serve as co-receptors for SYR1 to trigger systemin-mediated defense responses in tomato

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Journal of Integrative Plant Biology 2024年第10期66卷 2273-2287页

作者： Hyewon Cho Dain Seo Minsoo Kim Bo eun Nam Soyoun Ahn Minju Kang Geul bang Choon-Tak Kwon Youngsung Joo eunkyoo Oh Department of Life Sciences Korea UniversitySeoul 02841Korea Research Institute of Basic SciencesSeoul National UniversitySeoul 08826Korea School of Biological Sciences Seoul National UniversitySeoul 08826Korea Digital Omics Research Center Ochang Institute of Biological and Environmental ScienceKorea Basic Science InstituteCheongju 28119Korea Department of Smart Farm Science Kyung Hee UniversityYongin 17104Korea

Systemin, the first peptide hormone identified in plants, was initially isolated from tomato(Solanum lycopersicum) leaves. Systemin mediates local and systemic wound-induced defense responses in plants, conferring resistance to necrotrophic fungi and herbivorous insects. Systemin is recognized by the leucine-rich-repeat receptor-like kinase(LRRRLK) receptor SYSTEMIN RECEPTOR1(SYR1), but how the systemin recognition signal is transduced to intracellular signaling pathways to trigger defense responses is poorly understood. Here, we demonstrate that SERK family LRR-RLKs function as coreceptors for SYR1 to mediate systemin signal transduction in tomato. By using chemical genetic approaches coupled with engineered receptors, we revealed that the association of the cytoplasmic kinase domains of SYR1 with SERKs leads to their mutual trans-phosphorylation and the activation of SYR1, which in turn induces a wide range of defense responses. Systemin stimulates the association between SYR1 and all tomato SERKs(SlSERK1,SlSERK3A, and SlSERK3B). The resulting SYR1-SlSERK heteromeric complexes trigger the phosphorylation of TOMATO PROTEIN KINASE 1B(TPK1b), a receptor-like cytoplasmic kinase that positively regulates systemin responses. Additionally,upon association with SYR1, SlSERKs are cleaved by the Pseudomonas syringae effector HopB1, further supporting the finding that SlSERKs are activated by systemin-bound SYR1. Finally, genetic analysis using Slserk mutants showed that SlSERKs are essential for systemin-mediated defense responses. Collectively, these findings demonstrate that the systeminmediated association of SYR1 and SlSERKs activates defense responses against herbivorous insects.

关键词： LRR-RLK peptide SERK SYR1 systemin

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LDHA Desuccinylase Sirtuin 5 as A Novel Cancer Metastatic Stimulator in Aggressive Prostate Cancer

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Genomics, Proteomics & Bioinformatics 2023年第1期21卷 177-189页

作者： Oh Kwang Kwon In Hyuk bang So Young Choi Ju Mi Jeon Ann-Yae Na Yan Gao Sam Seok Cho Sung Hwan Ki Youngshik Choe Jun Nyung lee Yun-Sok Ha eun Ju Bae Tae Gyun Kwon Byung-Hyun Park Sangkyu lee BK21 Plus KNU Multi-Omics Based Creative Drug Research Team College of PharmacyResearch Institute of Pharmaceutical SciencesKyungpook National UniversityDaegu 41566Republic of Korea Department of Biochemistry and Molecular Biology Chonbuk National University Medical SchoolJeonjuJeonbuk 54896Republic of Korea College of Pharmacy Chosun UniversityGwangju 61452Republic of Korea Korea Brain Research Institute Daegu 41068Republic of Korea Department of Urology School of MedicineKyungpook National UniversityDaegu 41566Republic of Korea Department of Urology Kyungpook National University HospitalDaegu 41566Republic of Korea College of Pharmacy Chonbuk UniversityJeonjuJeonbuk 54896Republic of Korea School of Pharmacy Sungkyunkwan UniversitySuwon 16419Republic of Korea

Prostate cancer(PCa)is the most commonly diagnosed genital cancer in men *** 80%of the patients who developed advanced PCa suffered from bone metastasis,with a sharp drop in the survival *** great efforts,the detailed mechanisms underlying castration-resistant PCa(CRPC)remain *** 5(SIRT5),an NAD+-dependent desuccinylase,is hypothesized to be a key regulator of various ***,compared to other SIRTs,the role of SIRT5 in cancer has not been extensively ***,we revealed significantly decreased SIRT5 levels in aggressive PCa cells relative to the PCa *** correlation between the decrease in the SIRT5 level and the patient’s reduced survival rate was also *** quantitative global succinylome analysis,we characterized a significant increase in the succinylation at lysine 118(K118su)of lactate dehydrogenase A(LDHA),which plays a role in increasing LDH *** a substrate of SIRT5,LDHA-K118su significantly increased the migration and invasion of PCa cells and LDH activity in PCa *** study reveals the reduction of SIRT5 protein expression and LDHA-K118su as a novel mechanism involved in PCa progression,which could serve as a new target to prevent CPRC progression for PCa treatment.

关键词： Sirtuin 5 Lactate dehydrogenase A Lysine succinylation PCa progression

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Advancements and challenges in gastrointestinal imaging

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World Journal of Clinical Cases 2024年第33期12卷 6591-6594页

作者： eun Jeong Gong Chang Seok bang Department of Internal Medicine Hallym University College of MedicineChun-cheon 24253Gangwon-doSouth Korea Department of Internal Medicine Hallym University College of MedicineChuncheon Sacred Heart HospitalChuncheon 24253Gangwon-doSouth Korea

A recent review by Gulinac et al,provides an in-depth analysis of current clinical issues and challenges in gastrointestinal *** editorial highlights the advancements in imaging techniques,including the integration of artificial intelligence and functional imaging modalities,and discusses the ongoing relevance of traditional nuclear medicine *** future of gastrointestinal imaging looks promising,with continuous improvements in resolution,enhanced ability to analyze color and texture beyond visual diagnosis,faster image processing,and the application of molecular imaging and nanoparticles expected to enhance diagnostic accuracy and clinical outcomes.

关键词： Imaging methods Gastrointestinal diseases Gastrointestinal tract Radiology Tumors of the gastrointestinal tract

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Improvement of diabetes and hypertension after gastrectomy: A nationwide cohort study

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World Journal of Gastroenterology 2015年第4期21卷 1173-1181页

作者： eun Kyung lee So Young Kim You Jin lee Mi Hyang Kwak Hak Jin Kim Il Ju Choi Soo-Jeong Cho Young Woo Kim Jong Yeul lee Chan Gyoo Kim Hong Man Yoon bang Wool Eom Sun-Young Kong Min Kyong Yoo Jong Hyock Park Keun Won Ryu Department of Internal Medicine National Cancer CenterGoyang 410-769South Korea College of Medicine/Graduate School of Health Science Business ConvergenceChungbuk National UniversityCheongju 361-763South Korea Department of Surgery National Cancer CenterGoyang 410-769South Korea Department of Laboratory Medicine National Cancer CenterGoyang 410-769South Korea Department of Clinical Nutrition National Cancer CenterGoyang 410-769South Korea

AIM: To evaluate the effect of gastrectomy on diabetes mellitus(DM) and hypertension(HTN) in non-obese gastric cancer patients. METHODS: A total of 100000 patients, diagnosed with either type 2 DM or HTN, were randomly selected from the 2004 Korean National Health Insurance System claims. Among them, 360 diabetes and 351 hypertensive patients with gastric cancer who had been regularly treated without chemotherapy from January 2005 to December 2010 were selected. They were divided into three groups according to their treatment methods: total gastrectomy(TG), subtotal gastrectomy(STG) and endoscopic resection(ER). RESULTS: The drug discontinuation rate of antidiabetic and anti-hypertensive agents after gastric cancer treatment was 9.7% and 11.1% respectively. DM appeared to be improved more frequently(22.8%) and earlier(mean ± SE 28.6 ± 1.8 mo) in TG group than in the two other groups [improved in 9.5% of ER group(37.4 ± 1.1 mo) and 6.4% of STG group(47.0 ± 0.8 mo)]. The proportion of patients treated with multiple drugs decreased more notably in TG group compared to others(P = 0.001 in DM, and P = 0.035 in HTN). In TG group, adjusted hazard ratio for theimprovement of DM was 2.87(95%CI: 1.15-7.17) in a multi-variate analysis and better control of DM was observed with survival analysis(P < 0.001).CONCLUSION: TG was found to decrease the need for anti-diabetic medications which can be reflective of improved glycemic control, to a greater extent than either ER or STG in non-obese diabetic patients.

关键词： Diabetes Hypertension Gastrectomy Gastric cancer N

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