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Nuclear Factor Erythroid 2-related Factor 2 Knockout Suppresses the Development of Aggressive Colorectal Cancer Formation Induced by Azoxymethane/Dextran Sulfate Sodium-Treatment in Female Mice

Song CH, Kim N, Nam RH, Choi SI, Kang C, Jang JY, Nho H, Shin E, Lee HN

Colon tumors develop more frequently in male than in female. Nuclear factor erythroid 2-related factor 2 (Nrf2) plays differential roles in the stage of tumorigenesis. The purpose of this study...
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Changes in Cecal Microbiota and Short-chain Fatty Acid During Lifespan of the Rat

Choi SI, Son JH, Kim N, Kim YS, Nam RH, Park JH, Song CH, Yu JE, Lee DH, Yoon K, Min H, Kim YR, Seok YJ

  • KMID: 2510071
  • J Neurogastroenterol Motil.
  • 2021 Jan;27(1):134-146.
  • doi: 10.5056/jnm20148
Background/Aims The gut microbiota regulates intestinal immune homeostasis through host-microbiota interactions. Multiple factors affect the gut microbiota, including age, sex, diet, and use of drugs. In addition, information on gut microbiota...
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Efficacy of Tegoprazan for Improving the Susceptibility of Antimicrobial Agents against Antibiotic-Resistant Helicobacter pylori

Lee JW, Kim N, Nam RH, Yu JE, Son JH, Lee SM, Lee DH

Background/Aims: Favorable outcomes of potassium-competitive acid blocker (PCAB)-containing eradication therapy have been reported. In fact, tegoprazan, a recently developed PCAB, was presumed to show good eradication efficacy even for resistant...
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Expression of Neurotrophic Factors, Tight Junction Proteins, and Cytokines According to the Irritable Bowel Syndrome Subtype and Sex

Lee JY, Kim N, Park JH, Nam RH, Lee SM, Song CH, Kim G, Na HY, Choi YJ, Kim JJ, Lee DH

  • KMID: 2500655
  • J Neurogastroenterol Motil.
  • 2020 Jan;26(1):106-116.
  • doi: 10.5056/jnm19099
Background/Aims Emerging evidence shows that the mechanism of irritable bowel syndrome (IBS) is associated with neurotrophic factors and tight junction proteins (TJPs). It is known that there are sex differences...
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Sex-related Alterations of Gut Microbiota in the C57BL/6 Mouse Model of Inflammatory Bowel Disease

Son HJ, Kim N, Song CH, Nam RH, Choi SI, Kim JS, Lee DH

BACKGROUND: Gut microbiota is closely associated with development and exacerbation of inflammatory bowel diseases (IBD). The aim of this study was to investigate differences in gut microbiota depending on sex...
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Effect of Estradiol in an Azoxymethane/Dextran Sulfate Sodium-Treated Mouse Model of Colorectal Cancer: Implication for Sex Difference in Colorectal Cancer Development

Son HJ, Sohn SH, Kim N, Lee HN, Lee SM, Nam RH, Park JH, Song CH, Shin E, Na HY, Kim JS, Lee DH, Surh YJ

PURPOSE: This study demonstrates that estradiol downregulates inflammation and inhibits colorectal cancer (CRC) development in azoxymethane/dextran sulfate sodium (AOM/DSS) mouse model. MATERIALS AND METHODS: AOM/DSS-treated male and female mice were sacrificed...
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Rat Intestinal Acetic Acid and Butyric acid and Effects of Age, Sex, and High-fat Diet on the Intestinal Levels in Rats

Choi SI, Kim N, Lee SM, Nam RH, Kang SR, Song CH, Park YT, Min H, Kim YR, Seok YJ

BACKGROUND: High-fat diet is known to be implicated in the pathogenesis of various metabolic disorders related to an inflammatory response. The aim of this study was to investigate the influence...
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Comparative Analysis of Ileal and Cecal Microbiota in Aged Rats

Lee SM, Kim N, Park JH, Nam RH, Yoon K, Lee DH

BACKGROUND: Gut microbiota contributes to intestinal and immune homeostasis through host-microbiota interactions. Distribution of the gut microbiota differs according to the location in the gastrointestinal tract. Although the microbiota properties...
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Effects of 17β-Estradiol on Colonic Permeability and Inflammation in an Azoxymethane/Dextran Sulfate Sodium-Induced Colitis Mouse Model

Song CH, Kim N, Sohn SH, Lee SM, Nam RH, Na HY, Lee DH, Surh YJ

BACKGROUND/AIMS: Intestinal barrier dysfunction is a hallmark of inflammatory bowel diseases (IBDs) such as ulcerative colitis. This dysfunction is caused by increased permeability and the loss of tight junctions in...
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Pantoprazole Does Not Reduce the Antiplatelet Effect of Clopidogrel: A Randomized Controlled Trial in Korea

Choi YJ, Kim N, Jang IJ, Cho JY, Nam RH, Park JH, Jo HJ, Yoon H, Shin CM, Park YS, Lee DH, Jung HC

BACKGROUND/AIMS: Concerns that proton pump inhibitors (PPIs) diminish the efficacy of clopidogrel could hamper the appropriate prescription of PPIs. We evaluated the influence of pantoprazole on the antiplatelet effect of...
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Analysis of Gastric Body Microbiota by Pyrosequencing: Possible Role of Bacteria Other Than Helicobacter pylori in the Gastric Carcinogenesis

Sohn SH, Kim N, Jo HJ, Kim J, Park JH, Nam RH, Seok YJ, Kim YR, Lee DH

BACKGROUND: Gastric microbiota along with Helicobacter pylori (HP) plays a key role in gastric disease. The aim of our study is to investigate the difference of human gastric microbiota between...
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Açaí Berries Inhibit Colon Tumorigenesis in Azoxymethane/Dextran Sulfate Sodium-Treated Mice

Choi YJ, Choi YJ, Kim N, Nam RH, Lee S, Lee HS, Lee HN, Surh YJ, Lee DH

BACKGROUND/AIMS: The aim of this study was to investigate the protective effect of açaí against azoxymethane (AOM)/dextran sulfate sodium (DSS)-induced colorectal cancer development. METHODS: The effect of açaí on tumorigenesis was...
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Analysis of Gastric Body Microbiota by Pyrosequencing: Possible Role of Bacteria Other Than Helicobacter pylori in the Gastric Carcinogenesis

Sohn SH, Kim N, Jo HJ, Kim J, Park JH, Nam RH, Seok YJ, Kim YR, Lee DH

There is an error in a grant number in Acknowledgements.
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Comparison of Changes in the Interstitial Cells of Cajal and Neuronal Nitric Oxide Synthase-positive Neuronal Cells With Aging Between the Ascending and Descending Colon of F344 Rats

Lee SM, Kim N, Jo HJ, Park JH, Nam RH, Lee HS, Kim HJ, Lee MY, Kim YS, Lee DH

  • KMID: 2395429
  • J Neurogastroenterol Motil.
  • 2017 Oct;23(4):592-605.
  • doi: 10.5056/jnm17061
BACKGROUND/AIMS: Neuronal degeneration and changes in interstitial cells of Cajal (ICCs) are important mechanisms of age-related constipation. This study aims to compare the distribution of ICCs and neuronal nitric oxide...
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PMK-S005 Alleviates Age-Related Gastric Acid Secretion, Inflammation, and Oxidative Status in the Rat Stomach

Choi YJ, Kim N, Lee JY, Nam RH, Suh JH, Lee SM, Ham MH, Jo HJ, Shim YK, Park YH, Lee JC, Choi YJ, Lee HS, Lee DH

BACKGROUND/AIMS: The aim of this study was to evaluate the effect of the synthetic S-allyl-l-cysteine (SAC) PMK-S005 on gastric acid secretion, inflammation, and antioxidant enzymes in aging rats. METHODS: The rats...
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Effect of N-Methyl-N-Nitrosourea on Helicobacter-induced Gastric Carcinogenesis in C57BL/6 Mice

Lee JY, Kim N, Choi YJ, Nam RH, Choi YJ, Lee S, Choi D, Lee HS, Kim JW, Lee DH

BACKGROUND: The aim of this study was to investigate the effect of N-methyl-N-nitrosourea (MNU) treatment followed by chronic Helicobacter pylori SS1 and H. felis colonization on the stomachs of C57BL/6...
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Gastroprotective Effects of PMK-S005 against Ethanol-Induced Acute Gastric Damage in Rats

Choi YJ, Kim N, Lee JY, Nam RH, Seo JH, Lee S, Kim HJ, Choi YJ, Lee HS, Lee DH

BACKGROUND/AIMS: This study aimed to examine the gastroprotective effects of PMK-S005, which is a synthetic S-allyl-L-cysteine (SAC; a sulfur-containing amino acid), against acute ethanol-induced gastric damage in rats. METHODS: Sprague-Dawley rats...
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Comparison of Gastric Microbiota Between Gastric Juice and Mucosa by Next Generation Sequencing Method

Sung J, Kim N, Kim J, Jo HJ, Park JH, Nam RH, Seok YJ, Kim YR, Lee DH, Jung HC

BACKGROUND: Not much is known about the role of gastric microbiota except for Helicobacter pylori in human health and disease. In this study, we aimed to detect human gastric microbiota...
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Anti-inflammatory and Anti-tumorigenic Effects of Açai Berry in Helicobacter felis-infected mice

Lee JY, Kim N, Choi YJ, Nam RH, Lee S, Ham MH, Suh JH, Choi YJ, Lee HS, Lee DH

BACKGROUND: The aim of this study was to evaluate the anti-inflammatory and anti-tumorigenic effect of açai berry after chronic Helicobacter felis colonization in the stomachs of C57BL/6 mice. METHODS: A total...
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The Effect of Sex on the Azoxymethane/Dextran Sulfate Sodium-treated Mice Model of Colon Cancer

Lee SM, Kim N, Son HJ, Park JH, Nam RH, Ham MH, Choi D, Sohn SH, Shin E, Hwang YJ, Sung J, Lee DH, Lee HN

BACKGROUND: The colitis-associated cancer exhibits different characteristics according to sex in the initiation and progression of the tumors. The aim of this study was to investigate the sex-associated difference in...
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