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Park S, Shim M, Lee G, You YA, Kim SM, Hur YM, Ko H, Park MH, Na SH, Kim YH, Cho GJ, Bae JG, Lee SJ, Lee SH, Lee DK, Kim YJ. Urinary metabolite biomarkers of pregnancy complications associated with maternal exposure to particulate matter. Reprod Toxicol 2024; 124:108550. [PMID: 38280687 DOI: 10.1016/j.reprotox.2024.108550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/02/2024] [Accepted: 01/23/2024] [Indexed: 01/29/2024]
Abstract
Particulate matter 2.5 (PM2.5) is associated with reproductive health and adverse pregnancy outcomes. However, studies evaluating biological markers of PM2.5 are lacking, and identifying biomarkers for estimating prenatal exposure to prevent pregnancy complications is essential. Therefore, we aimed to explore urine metabolites that are easy to measure as biomarkers of exposure. In this matched case-control study based on the PM2.5 exposure, 30 high PM2.5 group (>15 μg/m3) and 30 low PM2.5 group (<15 μg/m3) were selected from air pollution on pregnancy outcome (APPO) cohort study. We used a time-weighted average model to estimate individual PM exposure, which used indoor PM2.5 and outdoor PM2.5 concentrations by atmospheric measurement network based on residential addresses. Clinical characteristics and urine samples were collected from participants during the second trimester of pregnancy. Urine metabolites were quantitatively measured using gas chromatography-mass spectrometry following multistep chemical derivatization. Statistical analyses were conducted using SPSS version 21 and MetaboAnalyst 5.0. Small for gestational age and gestational diabetes (GDM) were significantly increased in the high PM2.5 group, respectively (P = 0.042, and 0.022). Fifteen metabolites showed significant differences between the two groups (P < 0.05). Subsequent pathway enrichment revealed that four pathways, including pentose and glucuronate interconversion with three pentose sugars (ribose, arabinose, and xylose; P < 0.05). The concentration of ribose increased preterm births (PTB) and GDM (P = 0.044 and 0.049, respectively), and the arabinose concentration showed a tendency to increase in PTB (P = 0.044). Therefore, we identified urinary pentose metabolites as biomarkers of PM2.5 and confirmed the possibility of their relationship with pregnancy complications.
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Affiliation(s)
- Sunwha Park
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, Korea
| | - Minki Shim
- College of Pharmacy, Chung-Ang University, Seoul, Korea
| | - Gain Lee
- Graduate program in system health science and engineering, Ewha Womans University, Seoul, Korea
| | - Young-Ah You
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, Korea
| | - Soo Min Kim
- Graduate program in system health science and engineering, Ewha Womans University, Seoul, Korea
| | - Young Min Hur
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, Korea
| | - Hyejin Ko
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, Korea
| | - Mi Hye Park
- Department of Obstetrics and Gynecology, Ewha Womans University Seoul Hospital, Korea
| | - Sung Hun Na
- Department of Obstetrics and Gynecology, Kangwon National University, School of Medicine, Korea
| | - Young-Han Kim
- Department of Obstetrics and Gynecology, Yonsei University College of Medicine, Korea
| | - Geum Joon Cho
- Department of Obstetrics and Gynecology, Korea University College of Medicine, Korea
| | - Jin-Gon Bae
- Department of Obstetrics and Gynecology, Keimyung University, School of Medicine, Dongsan Medical Center, Korea
| | - Soo-Jeong Lee
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Korea
| | | | - Dong-Kyu Lee
- College of Pharmacy, Chung-Ang University, Seoul, Korea.
| | - Young Ju Kim
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, Korea; Graduate program in system health science and engineering, Ewha Womans University, Seoul, Korea.
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Kang TK, Le TT, Kwon H, Park G, Kim KA, Ko H, Hong S, Lee WB, Jung SH. Lithospermum erythrorhizon Siebold & Zucc. extract reduces the severity of endotoxin-induced uveitis. Phytomedicine 2023; 121:155133. [PMID: 37812852 DOI: 10.1016/j.phymed.2023.155133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 09/21/2023] [Accepted: 10/03/2023] [Indexed: 10/11/2023]
Abstract
BACKGROUND Uveitis is an inflammatory eye condition that threatens vision, and effective anti-inflammatory treatments with minimal side effects are necessary to treat uveitis. PURPOSE This study aimed to investigate the effects of Lithospermum erythrorhizon Siebold & Zucc. against endotoxin-induced uveitis in rat and mouse models. METHODS Endotoxin-induced uveitis models of rats and mice were used to evaluate the effects of l. erythrorhizon treatment. Clinical inflammation scores and retinal thickness were assessed in the extract of l. erythrorhizon-treated rats. Histopathological examination revealed inflammatory cell infiltration into the ciliary body. Protein concentration, cellular infiltration, and prostaglandin-E2 levels were measured in the aqueous humor of the extract of l. erythrorhizon-treated rats. Protective effects of l. erythrorhizon on the anterior segment of the eye were examined in mice with endotoxin-induced uveitis. Additionally, we investigated the effect of l. erythrorhizon on the expression of pro-inflammatory cytokines [tumor necrosis factor alpha, interleukin-6, and interleukin-8] in lipopolysaccharide-stimulated THP1 human macrophages and examined the involvement of nuclear factor kappaB/activator protein 1 and interferon regulatory factor signaling pathways. Furthermore, three components of l. erythrorhizon were identified and assessed for their inhibitory effects on LPS-induced inflammation in RAW264.7 macrophage cells. RESULTS Treatment of the extract of l. erythrorhizon significantly reduced clinical inflammation scores and retinal thickening in rats with endotoxin-induced uveitis. Histopathological examination revealed decreased inflammatory cell infiltration into the ciliary body. The extract of l. erythrorhizon effectively reduced the protein concentration, cellular infiltration, and PG-E2 levels in the aqueous humor of rats with endotoxin-induced uveitis. In mice with endotoxin-induced uveitis, the extract of l. erythrorhizon demonstrated a protective effect on the anterior segment of the eye by reducing inflammation and retinal thickening. The extract of l. erythrorhizon suppressed the expression of pro-inflammatory cytokines (tumor necrosis factor alpha, interleukin-6, and interleukin-8) in lipopolysaccharide-induced inflammation in THP1 human macrophages, by modulating nuclear factor kappaB/activator protein 1 and interferon regulatory factor signaling pathways. Moreover, shikonin, acetylshikonin, and β, β-dimethylacryloylshikonin showed dose-dependent inhibition of nitric oxide, tumor necrosis factor alpha and interleukin-6 production in RAW264.7 macrophage cells. CONCLUSION The extract of l. erythrorhizon is a potential therapeutic agent for uveitis management. Administration of the extract of l. erythrorhizon led to reduced inflammation, retinal thickening, and inflammatory cell infiltration in rat and mouse models of uveitis. The compounds (shikonin, acetylshikonin, and β, β-dimethylacryloylshikonin) identified in this study played crucial roles in mediating the anti-inflammatory effects of l. erythrorhizon. These findings indicate that the extract of l. erythrorhizon and its constituent compounds are promising candidates for further research and development of novel treatment modalities for uveitis.
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Affiliation(s)
- Tae Kyeom Kang
- Natural Product Research Center, Korea Institute of Science & Technology, Gangneung 25451, Republic of Korea
| | - Tam Thi Le
- Natural Product Research Center, Korea Institute of Science & Technology, Gangneung 25451, Republic of Korea; Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology, Gangneung 25451, Republic of Korea
| | - Hyukjoon Kwon
- Natural Product Research Center, Korea Institute of Science & Technology, Gangneung 25451, Republic of Korea
| | - Geon Park
- Natural Product Research Center, Korea Institute of Science & Technology, Gangneung 25451, Republic of Korea
| | - Kyung-A Kim
- Division of Medical Oncology, Department of Internal Medicine, Graduate School of Medical Science Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hyejin Ko
- Natural Product Research Center, Korea Institute of Science & Technology, Gangneung 25451, Republic of Korea
| | - Suhee Hong
- Department of Aquatic Life Medicine, Gangneung-Wonju National University, Gangneung, 25457, Republic of Korea
| | - Wook-Bin Lee
- Natural Product Research Center, Korea Institute of Science & Technology, Gangneung 25451, Republic of Korea; Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology, Gangneung 25451, Republic of Korea.
| | - Sang Hoon Jung
- Natural Product Research Center, Korea Institute of Science & Technology, Gangneung 25451, Republic of Korea; Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology, Gangneung 25451, Republic of Korea.
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Yang TY, Li WC, Chen PKT, Olisova K, Ko H, Chang TY. Novel approach to distinguish submucous cleft palate from isolated cleft palate by ultrasound visualization of fetal swallowing. Ultrasound Obstet Gynecol 2023; 62:603-605. [PMID: 37058361 DOI: 10.1002/uog.26217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 03/27/2023] [Accepted: 03/31/2023] [Indexed: 06/19/2023]
Affiliation(s)
- T-Y Yang
- Department of Fetal Medicine, Taiji Clinic, Taipei, Taiwan
| | - W-C Li
- Department of Obstetrics and Gynecology, Puli Christian Hospital, Puli Township, Taiwan
| | - P K-T Chen
- Department of Plastic Surgery, Taipei Medical University Hospital, Taipei, Taiwan
| | - K Olisova
- Department of Medical Research, Taiji Clinic, Taipei, Taiwan
| | - H Ko
- Department of Fetal Medicine, Taiji Clinic, Taipei, Taiwan
| | - T-Y Chang
- Department of Fetal Medicine, Taiji Clinic, Taipei, Taiwan
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An S, Ko H, Jang H, Park IG, Ahn S, Hwang SY, Gong J, Oh S, Kwak SY, Lee Y, Kim H, Noh M. Prenylated Chrysin Derivatives as Partial PPARγ Agonists with Adiponectin Secretion-Inducing Activity. ACS Med Chem Lett 2023; 14:425-431. [PMID: 37077388 PMCID: PMC10107909 DOI: 10.1021/acsmedchemlett.2c00511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 03/02/2023] [Indexed: 03/08/2023] Open
Abstract
Decreased circulating adiponectin levels are associated with an increased risk of human metabolic diseases. The chemical-mediated upregulation of adiponectin biosynthesis has been proposed as a novel therapeutic approach to managing hypoadiponectinemia-associated diseases. In preliminary screening, the natural flavonoid chrysin (1) exhibited adiponectin secretion-inducing activity during adipogenesis in human bone marrow mesenchymal stem cells (hBM-MSCs). Here, we provide the 7-prenylated chrysin derivatives, chrysin 5-benzyl-7-prenylether compound 10 and chrysin 5,7-diprenylether compound 11, with the improved pharmacological profile compared with chrysin (1). Nuclear receptor binding and ligand-induced coactivator recruitment assays revealed that compounds 10 and 11 functioned as peroxisome proliferator-activated receptor (PPAR)γ partial agonists. These findings were supported by molecular docking simulation, followed by experimental validation. Notably, compound 11 showed PPARγ binding affinity as potent as that of the PPARγ agonists pioglitazone and telmisartan. This study presents a novel PPARγ partial agonist pharmacophore and suggests that prenylated chrysin derivatives have therapeutic potential in various human diseases associated with hypoadiponectinemia.
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Affiliation(s)
- Seungchan An
- Natural
Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Hyejin Ko
- Natural
Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Hongjun Jang
- Research
Institute of Pharmaceutical Science and Technology, College of Pharmacy, Ajou University, 206 World cup-ro, Yeongtong-gu, Suwon, Gyeonggi-do 16499, Republic of Korea
| | - In Guk Park
- Natural
Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Sungjin Ahn
- Natural
Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Seok Young Hwang
- Natural
Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Junpyo Gong
- Natural
Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Soyeon Oh
- Natural
Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Soo Yeon Kwak
- Research
Institute of Pharmaceutical Science and Technology, College of Pharmacy, Ajou University, 206 World cup-ro, Yeongtong-gu, Suwon, Gyeonggi-do 16499, Republic of Korea
| | - Yeonjin Lee
- Natural
Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Hyoungsu Kim
- Research
Institute of Pharmaceutical Science and Technology, College of Pharmacy, Ajou University, 206 World cup-ro, Yeongtong-gu, Suwon, Gyeonggi-do 16499, Republic of Korea
| | - Minsoo Noh
- Natural
Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
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Ko H, Lee SM, Chang HK, Min SY, Cho K, Park MS. Laparoscopic total extra-peritoneal (TEP) inguinal hernia repair under local anesthesia by topical lidocaine injection. Hernia 2023; 27:113-118. [PMID: 35939245 DOI: 10.1007/s10029-022-02653-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 07/12/2022] [Indexed: 11/28/2022]
Abstract
PURPOSE Laparoscopic total extra-peritoneal (TEP) inguinal hernia repair is usually performed under general anesthesia (GA) for muscle relaxation. However, TEP hernia repair may be reluctant in high-risk patients of GA. The aim of this study was to compare the outcomes of the TEP under GA and local anesthesia (LA). METHODS We retrospectively analyzed patients with inguinal hernia who underwent TEP under GA or LA in a single center from December 2016 to May 2018. The outcomes, such as demographics, duration of surgery, length of hospital stay, visual analog scale (VAS), and postoperative complications, were compared in each group. RESULTS Seventy-six patients with inguinal hernia underwent TEP under GA (n = 52) or LA (n = 24). Total operation time (mean ± standard deviation; GA, 111.6 ± 23.0 min; LA, 76.3 ± 18.0 min; p < 0.001) and length of hospital stay (GA, 38.3 ± 11.6 min; LA, 30.3 ± 15.6 min; p < 0.014) were shorter in LA group compared to GA group. There were no significant differences in postoperative VAS (1 h, p = 0.247; 4 h, p = 0.086; 12 h, p = 0.469; 24 h, p = 0.411), postoperative adverse effects (vomiting, p = 0.570; urinary retention, p = 0.214; headache, p = 0.494), and postoperative complications (seroma, p = 0.348; scrotal edema, p = 0.178; recurrence, p = 0.822) between LA group and GA group. CONCLUSION Compared with GA, there were no differences in postoperative pain and complications in patients who underwent TEP hernia repair under LA. Furthermore, in LA group, total operation time and length of hospital stay were shortened.
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Affiliation(s)
- H Ko
- Department of Surgery, College of Medicine, Kyung Hee University, 23, Kyung Hee Dae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - S M Lee
- Department of Surgery, College of Medicine, Kyung Hee University, 23, Kyung Hee Dae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - H K Chang
- Department of Surgery, College of Medicine, Kyung Hee University, 23, Kyung Hee Dae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - S Y Min
- Department of Surgery, College of Medicine, Kyung Hee University, 23, Kyung Hee Dae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - K Cho
- Department of Surgery, College of Medicine, Kyung Hee University, 23, Kyung Hee Dae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - M-S Park
- Department of Surgery, College of Medicine, Kyung Hee University, 23, Kyung Hee Dae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea.
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Kim J, Ko H, Hur JS, An S, Lee JW, Deyrup ST, Noh M, Shim SH. Discovery of Pan-peroxisome Proliferator-Activated Receptor Modulators from an Endolichenic Fungus, Daldinia childiae. J Nat Prod 2022; 85:2804-2816. [PMID: 36475432 DOI: 10.1021/acs.jnatprod.2c00791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Adiponectin-synthesis-promoting compounds possess therapeutic potential to treat diverse metabolic diseases, including obesity and diabetes. Phenotypic screening to find adiponectin-synthesis-promoting compounds was performed using the adipogenesis model of human bone marrow mesenchymal stem cells. The extract of the endolichenic fungus Daldinia childiae 047215 significantly promoted adiponectin production. Bioactivity-guided isolation led to 13 active polyketides (1-13), which include naphthol monomers, dimers, and trimers. To the best of our knowledge, trimers of naphthol (1-4) have not been previously isolated as either natural or synthetic products. The novel naphthol trimer 3,1',3',3″-ternaphthalene-5,5',5″-trimethoxy-4,4',4″-triol (2) and a dimer, nodulisporin A (12), exhibited concentration-dependent adiponectin-synthesis-promoting activity (EC50 30.8 and 15.2 μM, respectively). Compounds 2 and 12 bound to all three peroxisome proliferator-activated receptor (PPAR) subtypes, PPARα, PPARγ, and PPARδ. In addition, compound 2 transactivated retinoid X receptor α, whereas 12 did not. Naphthol oligomers 2 and 12 represent novel pan-PPAR modulators and are potential pharmacophores for designing new therapeutic agents against hypoadiponectinemia-associated metabolic diseases.
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Affiliation(s)
- Jaekyeong Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyejin Ko
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jae-Seoun Hur
- Korean Lichen Research Institute, Sunchon National University, Suncheon 57922, Republic of Korea
| | - Seungchan An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jin Woo Lee
- College of Pharmacy, Duksung Women's University, Seoul 01369, Republic of Korea
| | - Stephen T Deyrup
- Department of Chemistry and Biochemistry, Siena College, Londonville, New York 12211, United States
| | - Minsoo Noh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sang Hee Shim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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Ko H, An S, Jang H, Ahn S, Park IG, Hwang SY, Gong J, Oh S, Kwak SY, Choi WJ, Kim H, Noh M. Macakurzin C Derivatives as a Novel Pharmacophore for Pan-Peroxisome Proliferator-Activated Receptor Modulator. Biomol Ther (Seoul) 2022; 31:312-318. [PMID: 36382477 PMCID: PMC10129854 DOI: 10.4062/biomolther.2022.097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/02/2022] [Accepted: 09/05/2022] [Indexed: 11/18/2022] Open
Abstract
The natural flavonoid macakurzin C (1) exhibited adiponectin biosynthesis-inducing activity during adipogenesis in human bone marrow mesenchymal stem cells and its molecular mechanism was directly associated with a pan-peroxisome proliferator-activated receptor (PPAR) modulator affecting all three PPAR subtypes α, γ, and δ. In this study, increases in adiponectin biosynthesis-inducing activity by macakurzin C derivatives (2-7) were studied. The most potent adiponectin biosynthesis-inducing compound 6, macakurzin C 3,5-dimethylether, was elucidated as a dual PPARα/γ modulator. Compound 6 may exhibit the most potent activity because of the antagonistic relationship between PPARδ and PPARγ. Docking studies revealed that the O-methylation of macakurzin C to generate compound 6 significantly disrupted PPARδ binding. Compound 6 has therapeutic potential in hypoadiponectinemia-related metabolic diseases.
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Affiliation(s)
- Hyejin Ko
- College of Pharmacy, Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Seungchan An
- College of Pharmacy, Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Hongjun Jang
- Research Institute of Pharmaceutical Science and Technology, College of Pharmacy, Ajou University, Suwon 16499, Republic of Korea
| | - Sungjin Ahn
- College of Pharmacy, Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - In Guk Park
- College of Pharmacy, Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Seok Young Hwang
- College of Pharmacy, Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Junpyo Gong
- College of Pharmacy, Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Soyeon Oh
- College of Pharmacy, Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Soo Yeon Kwak
- Research Institute of Pharmaceutical Science and Technology, College of Pharmacy, Ajou University, Suwon 16499, Republic of Korea
| | - Won Jun Choi
- College of Pharmacy, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Hyoungsu Kim
- Research Institute of Pharmaceutical Science and Technology, College of Pharmacy, Ajou University, Suwon 16499, Republic of Korea
| | - Minsoo Noh
- College of Pharmacy, Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
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Kimminau E, Karnezos T, Ko H, Fasina Y, Kim W. Phytogenic blend administered through water impacts Salmonella infection in broiler chickens. J APPL POULTRY RES 2022. [DOI: 10.1016/j.japr.2022.100320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Ko H, Park Y, Kim J, Yang G, Byun H, Kim Y, Jung W, Park G, Lee H, Hong C, Kim K, Chang J. Axillary-Lateral Thoracic Vessel Juncture Radiotherapy Dose Constraints for Predicting Long-Term Lymphedema Risk in Patients with Breast Cancer. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Kim J, Kim J, Ko H, Kim T, Choi S, Sung W, Shin S, Chang J. Risk Stratification Based on Whole Body Tumor Burden can be Key for Refining the Role of Combining Radiation Therapy and Immune Checkpoint Inhibitors in Metastatic Disease. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Lee C, Gong J, Kim J, Ko H, An S, Bang S, Deyrup ST, Noh M, Shim SH. Adiponectin-Secretion-Promoting Cyclic Peptide-Polyketide Hybrids from a Halophyte-Associated Fungus, Colletotrichum gloeosporioides JS0417. J Nat Prod 2022; 85:501-510. [PMID: 35172097 DOI: 10.1021/acs.jnatprod.1c01102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Three new cyclic peptide-polyketide hybrids (1-3) and two new chaetiacandin-type polyketides (4 and 5) along with nine known compounds were isolated from cultures of a halophyte-associated fungus, Colletotrichum gloeosporioides JS0417. Spectroscopic analysis revealed that 1-3 were cyclic depsipeptides where 3,5,11-trihydroxy-2,6-dimethyldodecanoic acid was linked to two amino acids through amide and ester bonds to form a 12-membered ring. Relative and absolute configurations for the peptides were determined with spectroscopic analysis and chemical reactions. The cyclic depsipeptides 2 and 6 were determined to act as strong adiponectin-secretion-promoting modulators with potential to treat metabolic diseases associated with hypoadiponectinemia. Notably, a known compound, tryptophol, significantly inhibited PGE2 synthesis and also promoted adiponectin secretion, exhibiting a similar biological activity profile to aspirin, but with greater potency. The presence of an isoleucine moiety and non-glycosylation may be important for biological activity of the cyclic peptide-polyketide hybrids, and non-methoxylation of the side chain may influence activity of the indole derivatives.
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Affiliation(s)
- Changyeol Lee
- College of Pharmacy, Duksung Women's University, Seoul 01369, Republic of Korea
| | - Junpyo Gong
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jaekyeong Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyejin Ko
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Seungchan An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sunghee Bang
- College of Pharmacy, Duksung Women's University, Seoul 01369, Republic of Korea
| | - Stephen T Deyrup
- Department of Chemistry and Biochemistry, Siena College, Londonville, New York 12211, United States
| | - Minsoo Noh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sang Hee Shim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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Jiang SX, Feizi Farivar J, MacIsaac J, Tam E, Choi M, Luyun P, Ko H, Ramji A. A214 SIMPLIFICATION OF CARE FOR HCV IS EFFECTIVE DURING THE COVID PANDEMIC: A RETROSPECTIVE STUDY OF HCV TREATMENT UTILIZING THE BRITISH COLUMBIA HEPATITIS C NETWORK. J Can Assoc Gastroenterol 2022. [PMCID: PMC8859372 DOI: 10.1093/jcag/gwab049.213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
The COVID-19 pandemic has impacted healthcare access, including to curative treatment for hepatitis C (HCV) infection in the form of direct-acting antivirals (DAAs). A 49% decrease in DAA dispensations in Canada during the pandemic has been reported, but little is known about these treated populations.
Aims
To explore the patient characteristics and treatment patterns in those who were treated for HCV during the COVID pandemic.
Methods
A retrospective chart review was conducted at one site of utilizing the British Columbia Hepatitis C Network. Only patients included into the database were analyzed. Patients started on treatment between 03/17/2020-03/16/2021 were included as the “pandemic group” and patients from the 03/17/2019-03/16/2020 were included as a comparison “pre-pandemic group”. Data were extracted for clinicodemographic variables, laboratory investigations, treatment start date, regimen, and sustained virologic response at 12 weeks (SVR12).
Results
97 patients were treated during the pandemic compared to 143 patients the year prior, representing a 32% decline. Patients treated during the pandemic were predominantly new referrals (n=70, 72% vs n=64, 45% pre-pandemic, p<0.01) and had fewer total appointments (median 2 per patient vs 4 per patient pre-pandemic, p<0.01). There was a median of 1 in-person visit and 1 telehealth appointment per patient during the pandemic (vs median 2 per patient of each type pre-pandemic).
Pandemic patients were younger (mean age 56.0 years vs 59.6 pre-pandemic, p=0.04), and a greater proportion were on opioid agonist therapy (28% vs 13% pre-pandemic, p<0.01). Less transient elastography (TE) was performed during the pandemic (69% vs 89% pre-pandemic). Amongst those with TE scores, a lower proportion of those treated during the pandemic were cirrhotic (13% vs 21% pre-pandemic).
During the pandemic, treatment patterns shifted towards more prescriptions for glecaprevir/pibrentasvir (56% of all prescriptions vs 44% pre-pandemic) and sofosbuvir/velpatasvir (37% vs 29% pre-pandemic). There was slightly less use of sofosbuvir/velpatasvir/voxilaprevir at (2% vs 4% pre-pandemic).
The proportion of patients who completed lab work for SVR was similar during the pandemic (n=83/97, 85.6%) compared to pre-pandemic (n=120/143, 83.9%). Similarly, SVR12 remained high during the pandemic at 98.7% (vs 99.3% pre-pandemic). Of all 97 patients prescribed DAAs during the pandemic, 92 (94.8%) completed treatment.
Conclusions
Less persons were treated during the COVID pandemic, which may deter progress towards HCV elimination targets. Very high SVR12 and treatment completion rates during the pandemic suggest that patients can be effectively treated with less pre-treatment investigations and fewer appointments.
Funding Agencies
None
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Affiliation(s)
- S X Jiang
- Internal Medicine, The University of British Columbia Faculty of Medicine, Vancouver, BC, Canada
| | | | - J MacIsaac
- Pacific Gastroenterology Associates, Vancouver, BC, Canada
| | - E Tam
- Pacific Gastroenterology Associates, Vancouver, BC, Canada
| | - M Choi
- Gastrointestinal Research Institute, Vancouver, BC, Canada
| | - P Luyun
- Gastrointestinal Research Institute, Vancouver, BC, Canada
| | - H Ko
- Medicine, University of British Columbia, Vancouver, BC, Canada
| | - A Ramji
- Medicine, University of British Columbia, Vancouver, BC, Canada
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13
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Ko H, Jang H, An S, Park IG, Ahn S, Gong J, Hwang SY, Oh S, Kwak SY, Choi WJ, Kim H, Noh M. Galangin 3-benzyl-5-methylether derivatives function as an adiponectin synthesis-promoting peroxisome proliferator-activated receptor γ partial agonist. Bioorg Med Chem 2021; 54:116564. [PMID: 34922307 DOI: 10.1016/j.bmc.2021.116564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/08/2021] [Accepted: 12/08/2021] [Indexed: 11/28/2022]
Abstract
The upregulation of adiponectin production has been suggested as a novel strategy for the treatment of metabolic diseases. Galangin, a natural flavonoid, exhibited adiponectin synthesis-promoting activity during adipogenesis in human bone marrow mesenchymal stem cells. In target identification, galangin bound both peroxisome proliferator-activated receptor (PPAR) γ and estrogen receptor (ER) β. Novel galangin derivatives were synthesized to improve adiponectin synthesis-promoting compounds by increasing the PPARγ activity of galangin and reducing its ERβ activity, because PPARγ functions can be inhibited by ERβ. Three galangin 3-benzyl-5-methylether derivatives significantly promoted adiponectin production by 2.88-, 4.47-, and 2.76-fold, respectively, compared to the effect of galangin. The most potent compound, galangin 3-benzyl-5,7-dimethylether, selectively bound to PPARγ (Ki, 1.7 μM), whereas it did not bind to ERβ. Galangin 3-benzyl-5,7-dimethylether was identified as a PPARγ partial agonist in docking and pharmacological competition studies, suggesting that it may have diverse therapeutic potential in a variety of metabolic diseases.
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Affiliation(s)
- Hyejin Ko
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Hongjun Jang
- Research Institute of Pharmaceutical Science and Technology, College of Pharmacy, Ajou University, 206 World cup-ro, Yeongtong-gu, Suwon, Gyeonggi-do 16499, Republic of Korea
| | - Seungchan An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - In Guk Park
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Sungjin Ahn
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Junpyo Gong
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Seok Young Hwang
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Soyeon Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Soo Yeon Kwak
- Research Institute of Pharmaceutical Science and Technology, College of Pharmacy, Ajou University, 206 World cup-ro, Yeongtong-gu, Suwon, Gyeonggi-do 16499, Republic of Korea
| | - Won Jun Choi
- College of Pharmacy, Dongguk University-Seoul, 32 Dongguk-ro, Goyang, Gyeonggi-do 10326, Republic of Korea
| | - Hyoungsu Kim
- Research Institute of Pharmaceutical Science and Technology, College of Pharmacy, Ajou University, 206 World cup-ro, Yeongtong-gu, Suwon, Gyeonggi-do 16499, Republic of Korea.
| | - Minsoo Noh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.
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14
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Song Y, Lim J, Lim T, Im K, Kim N, Nam Y, Jeon Y, Ko H, Park I, Shin J, Cho S. Human mesenchymal stem cells derived from umbilical cord and bone marrow exert immunomodulatory effects in different mechanisms. Cytotherapy 2021. [DOI: 10.1016/s1465324921003455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Donaldson K, Mitchell RA, Enns RA, Bressler B, Rosenfeld G, Leung Y, Ramji A, Ko H. A164 PATTERNS IN MEDICAL THERAPY AND CLINICAL OUTCOMES IN PATIENTS WITH CONCOMITANT INFLAMMATORY BOWEL DISEASE AND PRIMARY SCLEROSING CHOLANGITIS: A SINGLE CENTRE RETROSPECTIVE ANALYSIS. J Can Assoc Gastroenterol 2021. [DOI: 10.1093/jcag/gwab002.162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Inflammatory bowel disease (IBD) in patients with primary sclerosing cholangitis (PSC) is characterized by pancolitis with rectal sparing and is associated with an increased risk of colorectal and biliary malignancies. Currently, pharmacologic management of IBD in the setting of PSC is the same as in IBD alone.
Aims
To assess patterns in medical therapy, and incidence of adverse outcomes in patients with concomitant IBD and PSC.
Methods
A retrospective review was conducted on all PSC-IBD patients followed between January 2010 and June 2018. The Endoscopic Mayo Score was used to grade IBD severity in PSC-ulcerative colitis (UC).
Results
69 patients were identified, 44 (63.8%) were male. The mean ages of IBD and PSC diagnosis were 28.6 (SD 14.9) and 37.0 (SD 18.9) years, respectively. The median length of follow up was 12 (range 2–49) years. 52 (75.4%) patients had UC, and 17 (24.6%) had Crohn’s disease (CD). 28 (87.5%) PSC-UC patients had pancolitis, and 4 (12.5 %) had proctitis. Among those with pancolitis, 8 (28.6%) had relative rectal sparing. 4 (14.3%) patients had more severe inflammation proximally, whereas only 1 (3.6%) had more severe distal inflammation. 23 (82.1%) patients had the same degree of inflammation throughout. 14 (93.3%) PSC-CD patients had colitis/ileocolitis and 1 (6.7%) had ileitis. Among those with PSC-UC, 16 (50.0%), 12 (37.5%), and 4 (12.5%) patients had grade 1, 2, and 3 disease, respectively. 62 (89.9%) PSC-IBD patients were treated with aminosalicylates, and 26 (37.7%) with biologics at some point in their IBD course. 26 (37.7%) were treated with aminosalicylates alone. 4 (5.8%) did not require any IBD therapy. Cholangiocarcinoma, colorectal cancer, and gallbladder cancer developed in 8 (11.6%), 1 (1.4%), and 1 (1.4%) PSC-IBD patients, respectively. 16 (23.2%) patients required partial or total colectomy. Indication for surgery was inflammation or stenosis, dysplasia, and neoplasia in 13 (81.3%), 2 (12.5%), and 1 (6.3%) patients, respectively.
Conclusions
The majority of this cohort had UC with mild disease activity. Pancolitis was common, with frequent rectal sparing and more severe right-sided inflammation. Despite the predominance of low-grade colitis, a large portion of patients required treatment with biologics. The incidence of adverse outcomes underscores the need for strict adherence to recommended surveillance practices. Low grade endoscopic activity, typical of the quiescent IBD course in PSC-IBD, may mask low grade histologic inflammation, which in turn may contribute to the increased risk of colonic neoplasia. Further studies are needed to determine the best management strategy for IBD in patients with PSC.
Funding Agencies
None
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Affiliation(s)
- K Donaldson
- Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - R A Mitchell
- Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - R A Enns
- Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - B Bressler
- Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - G Rosenfeld
- Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Y Leung
- Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - A Ramji
- Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - H Ko
- Department of Medicine, University of British Columbia, Vancouver, BC, Canada
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16
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Chahal D, Bedi HK, Marquez V, Yoshida EM, Ko H, Salh B. A208 PREDICTORS OF OUTCOMES IN PSC: RETROSPECTIVE ANALYSIS OF TWO TERTIARY CARE CENTERS IN BC. J Can Assoc Gastroenterol 2021. [DOI: 10.1093/jcag/gwab002.206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Primary sclerosing cholangitis (PSC) is a chronic inflammatory disorder of the bile ducts. PSC can rapidly progress to cholangiocarcinoma and death. Many clinical features of PSC, as well as its relationship with diseases such as IBD, remain ill-defined. These features are important for disease modeling and clinical trial design.
Aims
To identify features of PSC that may aid in disease modeling and outcomes prediction.
Methods
Patients with a diagnosis of PSC with visits between 2012 and 2018 were identified and data were extracted. Survival analysis was performed, with time defined as time of PSC diagnosis to time at clinical endpoint. The clinical endpoint for survival analysis was defined as development of cholangiocarcinoma, liver transplantation or death. Univariate and multivariate Cox-regression was then performed.
Results
169 patients (99 male, 70 female) were identified. Of these, 102 (60.4%) had a diagnosis of IBD (84 UC). 138 were Caucasian, 9 East Asian, 9 South Asian and 13 Middle East. Mean age at PSC diagnosis was 39.3, IBD diagnosis 29.3 years. Mean time to next diagnosis in those with PSC-IBD was 7.7 years. Of those with PSC-IBD, IBD preceded the diagnosis of PSC in 69 (67.6%) patients. 22 (13.0%) had concurrent liver disease, including 14 AIH and 1 PBC overlap. In those with UC, disease was most often pancolitis (57.8%), with noticeable rate of backwash ileitis (23.3%). There were 26 patients with current or prior use of Infliximab, 14 with Humira, and 6 with Vedolizumab. 28 (16.6%) patients had a partial or total colectomy. 35 (20.7%) patients had diagnoses of cancer, including 16 cholangiocarcinoma, 2 gall bladder carcinoma, and 4 colorectal. 33 (19.5%) patients received liver transplant, and 31 (18.3%) died. Most frequent cause of death was cholangiocarcinoma (12, 38.7%). Univariate analysis identified increased age at PSC diagnosis, presence of IBD, increased age at IBD diagnosis, diagnosis of IBD prior to PSC, increased time from diagnosis of IBD to PSC, diagnosis of UC as opposed to Crohn’s, and lack of Infliximab use as significant predictors of our clinical endpoints (p<0.05). Multivariate analysis only identified increased age at PSC diagnosis, presence of IBD, and diagnosis of IBD prior to PSC as predictors.
Conclusions
PSC affects persons of various ethnic backgrounds. Diagnosis of IBD appears to precede PSC in most PSC-IBD cases, and the temporal relationship may impact outcomes, possibly due to delayed diagnosis of PSC. UC has a worse disease course than Crohn’s. Cholangiocarcinoma still accounts for a large burden of overall death in PSC, and strategies for early diagnosis should be explored. More studies are required to delineate the relationship between biologic use and PSC outcomes. The major limitation of our study is the smaller sample size that may have limited statistical power.
Funding Agencies
NoneNone
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Affiliation(s)
- D Chahal
- Gastroenterology, University of British Columbia, Vancouver, BC, Canada
| | - H K Bedi
- Gastroenterology, The University of British Columbia Faculty of Medicine, Vancouver, BC, Canada
| | - V Marquez
- Gastroenterology, University of British Columbia, Vancouver, BC, Canada
| | - E M Yoshida
- Gastroenterology, University of British Columbia, Vancouver, BC, Canada
| | - H Ko
- Medicine, University of British Columbia, Vancouver, BC, Canada
| | - B Salh
- Gastroenterology, University of British Columbia, Vancouver, BC, Canada
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17
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An S, Kim G, Kim HJ, Ahn S, Kim HY, Ko H, Hyun YE, Nguyen M, Jeong J, Liu Z, Han J, Choi H, Yu J, Kim JW, Lee HW, Jacobson KA, Cho WJ, Kim YM, Kang KW, Noh M, Jeong LS. Discovery and Structure-Activity Relationships of Novel Template, Truncated 1'-Homologated Adenosine Derivatives as Pure Dual PPARγ/δ Modulators. J Med Chem 2020; 63:16012-16027. [PMID: 33325691 DOI: 10.1021/acs.jmedchem.0c01874] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Following our report that A3 adenosine receptor (AR) antagonist 1 exhibited a polypharmacological profile as a dual modulator of peroxisome proliferator-activated receptor (PPAR)γ/δ, we discovered a new template, 1'-homologated adenosine analogues 4a-4t, as dual PPARγ/δ modulators without AR binding. Removal of binding affinity to A3AR was achieved by 1'-homologation, and PPARγ/δ dual modulation was derived from the structural similarity between the target nucleosides and PPAR modulator drug, rosiglitazone. All the final nucleosides were devoid of AR-binding affinity and exhibited high binding affinities to PPARγ/δ but lacked PPARα binding. 2-Cl derivatives exhibited dual receptor-binding affinity to PPARγ/δ, which was absent for the corresponding 2-H derivatives. 2-Propynyl substitution prevented PPARδ-binding affinity but preserved PPARγ affinity, indicating that the C2 position defines a pharmacophore for selective PPARγ ligand designs. PPARγ/δ dual modulators functioning as both PPARγ partial agonists and PPARδ antagonists promoted adiponectin production, suggesting their therapeutic potential against hypoadiponectinemia-associated cancer and metabolic diseases.
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Affiliation(s)
- Seungchan An
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea.,Natural Products Research Institute, Seoul National University, Seoul 08826, Korea
| | - Gyudong Kim
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea.,College of Pharmacy and Research Institute of Drug Development, Chonnam National University, Gwangju 61186, Korea
| | - Hyun Jin Kim
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea
| | - Sungjin Ahn
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea.,Natural Products Research Institute, Seoul National University, Seoul 08826, Korea
| | - Hyun Young Kim
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea
| | - Hyejin Ko
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea.,Natural Products Research Institute, Seoul National University, Seoul 08826, Korea
| | - Young Eum Hyun
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea
| | - Mai Nguyen
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea.,College of Pharmacy and Research Institute of Drug Development, Chonnam National University, Gwangju 61186, Korea
| | - Juri Jeong
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea.,College of Pharmacy and Research Institute of Drug Development, Chonnam National University, Gwangju 61186, Korea
| | - Zijing Liu
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea.,College of Pharmacy and Research Institute of Drug Development, Chonnam National University, Gwangju 61186, Korea
| | - Jinhe Han
- College of Pharmacy and Research Institute of Drug Development, Chonnam National University, Gwangju 61186, Korea
| | - Hongseok Choi
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea
| | - Jinha Yu
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea
| | - Ji Won Kim
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea
| | - Hyuk Woo Lee
- Future Medicine Company Ltd., Seongnam, Gyeonggi-do 13449, Korea
| | - Kenneth A Jacobson
- Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes, and Digestive and Kidney Disease, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Won Jea Cho
- College of Pharmacy and Research Institute of Drug Development, Chonnam National University, Gwangju 61186, Korea
| | - Young-Mi Kim
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, Gyeonggi-do 15588, Korea
| | - Keon Wook Kang
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea
| | - Minsoo Noh
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea.,Natural Products Research Institute, Seoul National University, Seoul 08826, Korea
| | - Lak Shin Jeong
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea
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18
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Chen Y, Ko H, Zemelman BV, Seidemann E, Nauhaus I. Uniform spatial pooling explains topographic organization and deviation from receptive-field scale invariance in primate V1. Nat Commun 2020; 11:6390. [PMID: 33319775 PMCID: PMC7738493 DOI: 10.1038/s41467-020-19954-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 11/06/2020] [Indexed: 11/29/2022] Open
Abstract
Receptive field (RF) size and preferred spatial frequency (SF) vary greatly across the primary visual cortex (V1), increasing in a scale invariant fashion with eccentricity. Recent studies reveal that preferred SF also forms a fine-scale periodic map. A fundamental open question is how local variability in preferred SF is tied to the overall spatial RF. Here, we use two-photon imaging to simultaneously measure maps of RF size, phase selectivity, SF bandwidth, and orientation bandwidth—all of which were found to be topographically organized and correlate with preferred SF. Each of these newly characterized inter-map relationships strongly deviate from scale invariance, yet reveal a common motif—they are all accounted for by a model with uniform spatial pooling from scale invariant inputs. Our results and model provide novel and quantitative understanding of the output from V1 to downstream circuits. Two-photon imaging in macaque V1 captured maps of tuning selectivity for four spatial parameters, all of which correlated with peak spatial frequency. These inter-map relationships reveal a common motif—they are described by uniform spatial pooling from a family of scale invariant Gabor receptive fields.
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Affiliation(s)
- Y Chen
- Department of Psychology, University of Texas, Austin, TX, USA.,Department of Neuroscience, University of Texas, Austin, TX, USA.,Center for Perceptual Systems, University of Texas, Austin, TX, USA
| | - H Ko
- Department of Psychology, University of Texas, Austin, TX, USA.,Center for Perceptual Systems, University of Texas, Austin, TX, USA
| | - B V Zemelman
- Department of Neuroscience, University of Texas, Austin, TX, USA.,Center for Learning and Memory, University of Texas, Austin, TX, USA
| | - E Seidemann
- Department of Psychology, University of Texas, Austin, TX, USA.,Department of Neuroscience, University of Texas, Austin, TX, USA.,Center for Perceptual Systems, University of Texas, Austin, TX, USA
| | - I Nauhaus
- Department of Psychology, University of Texas, Austin, TX, USA. .,Department of Neuroscience, University of Texas, Austin, TX, USA. .,Center for Perceptual Systems, University of Texas, Austin, TX, USA.
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19
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Han Y, Liu J, Ahn S, An S, Ko H, Shin JC, Jin SH, Ki MW, Lee SH, Lee KH, Shin SS, Choi WJ, Noh M. Diallyl Biphenyl-Type Neolignans Have a Pharmacophore of PPARα/γ Dual Modulators. Biomol Ther (Seoul) 2020; 28:397-404. [PMID: 32576717 PMCID: PMC7457167 DOI: 10.4062/biomolther.2019.180] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 12/24/2019] [Accepted: 01/07/2020] [Indexed: 12/31/2022] Open
Abstract
Adiponectin secretion-promoting compounds have therapeutic potentials in human metabolic diseases. Diallyl biphenyl-type neolignan compounds, magnolol, honokiol, and 4-O-methylhonokiol, from a Magnolia officinalis extract were screened as adiponectin-secretion promoting compounds in the adipogenic differentiation model of human bone marrow mesenchymal stem cells (hBM-MSCs). In a target identification study, magnolol, honokiol, and 4-O-methylhonokiol were elucidated as PPARα and PPARγ dual modulators. Diallyl biphenyl-type neolignans affected the transcription of lipid metabolism-associated genes in a different way compared to those of specific PPAR ligands. The diallyl biphenyl-type neolignan structure provides a novel pharmacophore of PPARα/γ dual modulators, which may have unique therapeutic potentials in diverse metabolic diseases.
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Affiliation(s)
- Yujia Han
- College of Pharmacy and Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Jingjing Liu
- College of Pharmacy and Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Sungjin Ahn
- College of Pharmacy and Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Seungchan An
- College of Pharmacy and Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyejin Ko
- College of Pharmacy and Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Jeayoung C Shin
- College of Pharmacy and Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Sun Hee Jin
- College of Pharmacy and Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Min Won Ki
- College of Pharmacy and Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - So Hun Lee
- SK Bioland, Cheongju 28162, Republic of Korea
| | | | | | - Won Jun Choi
- College of Pharmacy, Dongguk University, Goyang 10326, Republic of Korea
| | - Minsoo Noh
- College of Pharmacy and Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
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20
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Pi S, Mitchell RA, Mohajerani A, Farivar J, Ko H, Ramji A. A136 PREDICTIVE FACTORS OF CIRRHOSIS IN HCV PATIENTS WITH LOW PRE-TREATMENT APRI AND/OR FIB-4 SCORES. J Can Assoc Gastroenterol 2020. [DOI: 10.1093/jcag/gwz047.135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
It is essential to evaluate the stage of hepatic fibrosis prior to the initiation of HCV therapy. In addition to being a major prognostic factor, the presence of cirrhosis requires monitoring for hepatocellular carcinoma (HCC), esophageal varices, and decompensated liver disease. In some cases the presence of cirrhosis may affect the choice of therapy. In tertiary hepatology clinics, transient elastography (TE) is routinely used to assess fibrosis; however access to TE is limited. Fibrosis-4 (FIB4) and AST-to-platelet ratio index (APRI) are simple, easily available non-invasive methods of fibrosis measurement based on routine serum biomarkers. Studies evaluating HCV treatment pathways have reported that the use of FIB4 and APRI are cost-effective strategies for excluding cirrhosis thereby reducing the need for TE prior to treatment. Although the NPV of these tests are well described, a minority of patients will have advanced fibrosis despite low APRI and/or FIB4 scores.
Aims
To investigate predictive factors of cirrhosis in HCV patients with low pre-treatment APRI and/or FIB-4 scores.
Methods
Retrospective observational study with data obtained from the Pacific Gastroenterology Associates (PGA), a tertiary care outpatient Gastroenterology clinic located in Vancouver, British Columbia. Inclusions: Chronic HCV patients treated between Jan 2015 to 2019, pre-treatment TE values ≥12.5 kPa, FIB-4 <1.45 and/or APRI <0.7. Exclusions: those without cirrhosis, or incomplete evaluation prior to HCV treatment. Cirrhosis was defined as those with TE ≥12.5 kPa with clinical, radiographic, or pathologic features of cirrhosis.
Results
52 patients were identified. 11 patients did not have clinical, radiographic, or pathologic features of cirrhosis and 3 patients were excluded for insufficient data. Thus, 39 patients were included in multivariate analysis. The mean age was 59 years and 66% (25/38) were male gender. 10% (4/38) were Genotype 3 (G3). Presence of G3 was not included in the multivariate analysis due to low number of observations.
Conclusions
Generally, an APRI <0.7 and FIB-4 <1.45 have good test characteristics for excluding fibrosis. Our study demonstrates that patients with obesity, dyslipidemia, excessive alcohol use, or known steatosis on ultrasound may have cirrhosis despite low serum biomarker scores. Co-existence of other liver diseases such as alcohol related or non-alcoholic fatty liver disease (NAFLD) should prompt further evaluation for fibrosis assessment beyond biomarkers as these persons may have more advanced liver disease.
Funding Agencies
None
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Affiliation(s)
- S Pi
- Gastroenterology, University of British Columbia, Vancouver, BC, Canada
| | - R A Mitchell
- Gastroenterology, University of British Columbia, Vancouver, BC, Canada
| | - A Mohajerani
- Pacific Gastroenterology Associates GI Research Institute, Vancouver, BC, Canada
| | - J Farivar
- Pacific Gastroenterology Associates GI Research Institute, Vancouver, BC, Canada
| | - H Ko
- Medicine, University of British Columbia, Vancouver, BC, Canada
| | - A Ramji
- Gastrointestinal Research Institute, Vancouver, BC, Canada
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21
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Abstract
Abstract
Background
Methotrexate (MTX) is effective for dermatologic and rheumatologic conditions such as psoriasis (Ps), psoriatic arthritis (PsO) and rheumatoid arthritis (RA). Long-term MTX use may be complicated by hepatic fibrosis, although patient, disease factors and the mechanism remain unclear. Transient elastography (TE) is a non-invasive measure of hepatic fibrosis that is often used as surveillance in this patient population.
Patients with Ps and PsO have higher rates of non-alcoholic fatty liver disease. The controlled attenuation parameter (CAP) measurement is a non-invasive test that correlates with histologic degree of steatosis. To our knowledge, no studies have evaluated hepatic steatosis via CAP scores in MTX use.
Aims
To determine the prevalence of steatosis and significant fibrosis (F≥stage 2) in persons on MTX therapy and to determine the predictive factors for these events.
Methods
A single centred retrospective cohort study was performed. Patients on >6 months of MTX for a dermatologic or rheumatologic disease who had undergone TE from January 2015 to September 2019 were included. Demographic variables, laboratory investigations, TE and CAP scores were collected. Multivariate analysis was performed to determine predictors of steatosis and fibrosis.
Results
A total of 177 patients on methotrexate were included. Ps was the most frequent diagnosis (n=52) followed by RA (n=50) and PsO (n=38). Steatosis (CAP≥245 dB/m) was present in 73.9% of patients. Patients with steatosis had significantly more fibrosis and a higher BMI than those without steatosis (CAP<245 dB/m). Higher CAP score was correlated with increased lifetime dose of methotrexate by Pearson correlation analysis (r=0.48, p=0.001) (n=85 patients). Multivariate regression analysis revealed that diabetes mellitus (OR 10.5, 95% CI 1.38–80.60), hypertension (OR 4.97, 95% CI 1.66–14.84), and BMI> 30 (OR 10.1, 95% CI 1.88–37.14) were predictors of steatosis (CAP≥245 dB/m). Predictors of METAVIR≥F2 (TE≥8.0 kPa) by multivariate regression analysis included CAP score of ≥270 (OR 8.36, 95% CI 1.88–37.14), diabetes mellitus (OR 2.85, 95% CI 1.09–7.48), hypertension (OR 5.4, 95% CI 2.23–13.0), dyslipidemia (OR 3.71, 95% CI 1.50–9.18) and alcohol use (OR 3.06, 95% CI 1.2–7.49).
Conclusions
In patients on MTX for rheumatologic and dermatologic diseases, hepatic steatosis was common and predicted significant fibrosis. Additionally, increasing MTX exposure is correlated with steatosis. Features of the metabolic syndrome including diabetes, hypertension or obesity were predictors of both steatosis and fibrosis (F≥2). Further study is needed to evaluate if steatosis is a mechanism by which fibrosis occurs in patients on MTX, or if it due to other patient factors.
Funding Agencies
None
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Affiliation(s)
- M Tomaszewski
- University of British Columbia, Vancouver, BC, Canada
| | - M Dahiya
- University of British Columbia, Vancouver, BC, Canada
| | - A Mohajerani
- Gastrointestinal Research Institute, Vancouver, BC, Canada
| | - H Punja
- University of British Columbia, Vancouver, BC, Canada
| | - H Ko
- University of British Columbia, Vancouver, BC, Canada
| | - A Ramji
- University of British Columbia, Vancouver, BC, Canada
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22
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Perdrizet K, Stockley T, Law J, Shabir M, Zhang T, Le L, Lau A, Tsao M, Kamel-Reid S, Pal P, Cabanero M, Schwock J, Ko H, Liu G, Bradbury P, Sacher A, Shepherd F, Leighl N. P1.01-30 Non-Small Cell Lung Cancer (NSCLC) Next Generation Sequencing (NGS): Integrating Genomic Sequencing into a Publicly Funded Health Care Model. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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23
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Duong VT, Dang TT, Kim JP, Kim K, Ko H, Hwang CH, Koo KI. Twelve-day medium pumping into tubular cell-laden scaffold using a lab-made PDMS connector. Eur Cell Mater 2019; 38:1-13. [PMID: 31332770 DOI: 10.22203/ecm.v038a01] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
In the current study, a method is proposed to supply culture medium into a two-layered cell-laden tubular scaffold in order to enhance cell proliferation, confluence, and viability. The two-layered cell-laden tubular scaffold was made of calcium-alginate mixed with fibroblast cells (NIH/3T3) using a lab-made double- coaxial laminar-flow generator. Afterwards, the tubular scaffold was connected to a syringe pump system using a polydimethylsiloxane (PDMS) micro-connector for long-term cell culture. Three medium pumping conditions were applied and compared: a heart-beat-mimicking pumping (20 µL/s, 1 s period, and 50 % pulse width), a continuous pumping (20 µL/s) and a non-pumping. Non-leaky connections between the tubular scaffolds and the micro-connector outlet were sustained for 13.5 ± 0.83 d in heartbeat-mimicking pumping and 11.8 ± 0.33 d in continuous pumping condition, due to the elasticity of the tubular scaffolds. Importantly, the two pumping conditions resulted in more cell proliferation, confluence, and viability than the non-pumping condition. Furthermore, analysis of newly-produced type-I collagen matrix indicated that the cells under the two pumping conditions formed a tissue-like structure. The proposed technique could further be applied to vascular co-culturing for vascular engineered tissue.
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Affiliation(s)
| | | | | | | | | | | | - K-I Koo
- Department of Biomedical Engineering, University of Ulsan, Ulsan, Republic of Korea. room 409, building 18, University of Ulsan, 93 Daehak-ro, Nam-gu, Ulsan (44610), Republic of
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24
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Jang H, Ko H, Song K, Kim YS. A Sesquiterpenoid from Farfarae Flos Induces Apoptosis of MDA-MB-231 Human Breast Cancer Cells through Inhibition of JAK-STAT3 Signaling. Biomolecules 2019; 9:biom9070278. [PMID: 31337063 PMCID: PMC6681226 DOI: 10.3390/biom9070278] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 07/10/2019] [Accepted: 07/11/2019] [Indexed: 12/14/2022] Open
Abstract
Triple-negative breast cancers (TNBCs) are hard-to-treat breast tumors with poor prognosis, which need to be treated by chemotherapy. Signal transducer and activator of transcription 3 (STAT3) is a transcription factor involved in proliferation, metastasis, and invasion of cancer cells. Therefore, research on searching for promising compounds with metabolism that suppress phosphorylation or transcription of STAT3 in TNBC cells is important. Farfarae Flos is well known as a traditional medicine for treating inflammation. However, few studies have shown that sesquiterpenoids from Farfarae Flos have an anticancer effect. In this study, efficient separation methods and an MTT assay were conducted to isolate an anticancer compound from Farfarae Flos against TNBC MDA-MB-231 cells. Here, 7β-(3-Ethyl-cis-crotonoyloxy)-1α-(2-methylbutyryloxy)-3,14-dehydro-Z-notonipetranone (ECN), a compound isolated from Farfarae Flos showed a potent cytotoxic effect on MDA-MB-231 cells. ECN inhibited JAK–STAT3 signaling and suppressed the expression of STAT3 target genes. In addition, ECN induced apoptosis through both extrinsic and intrinsic pathways. Furthermore, we investigated that ECN inhibited the growth of tumors by intraperitoneal administration in mice injected with MDA-MB-231 cells. Therefore, ECN can be an effective chemotherapeutic agent for breast cancer treatment.
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Affiliation(s)
- Hyeri Jang
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
| | - Hyejin Ko
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
| | - Kwangho Song
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
| | - Yeong Shik Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea.
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25
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Ko H, Lee JH, Kim HS, Kim T, Han YT, Suh YG, Chun J, Kim YS, Ahn KS. Novel Galiellalactone Analogues Can Target STAT3 Phosphorylation and Cause Apoptosis in Triple-Negative Breast Cancer. Biomolecules 2019; 9:biom9050170. [PMID: 31058868 PMCID: PMC6571922 DOI: 10.3390/biom9050170] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 04/26/2019] [Accepted: 04/30/2019] [Indexed: 12/24/2022] Open
Abstract
Aberrant activation of signal transducer and activator of transcription 3 (STAT3) has been documented in various malignancies including triple-negative breast cancers (TNBCs). The STAT3 transcription factor can regulate the different important hallmarks of tumor cells, and thus, targeting it can be a potential strategy for treating TNBC, for which only limited therapeutic options are available. In this study, we analyzed the possible effect of (-)-galiellalactone and its novel analogues, SG-1709 and SG-1721, and determined whether these agents exerted their antineoplastic effects by suppressing the STAT3 signaling pathway in TNBC cells. The two analogues, SG-1709 and SG-1721, inhibited both constitutive as well as inducible STAT3 phosphorylation at tyrosine 705 more effectively than (-)-galiellalactone, which indicates that the analogues are more potent STAT3 blockers. Moreover, SG-1721 not only inhibited nuclear translocation and DNA binding of STAT3 but also induced apoptosis, and decreased expression of diverse oncogenic proteins. Interestingly, SG-1721 also exhibited an enhanced apoptotic effect when combined with radiotherapy. Furthermore, in vivo administration of SG-1721 significantly attenuated breast xenograft tumor growth via decreasing levels of p-STAT3. Therefore, SG-1721 may be a promising candidate for further application as a pharmacological agent that can target STAT3 protein in treating TNBC.
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Affiliation(s)
- Hyejin Ko
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea.
| | - Jong Hyun Lee
- Department of Science in Korean Medicine, Kyung Hee University, 24 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea.
| | - Hyun Su Kim
- College of Pharmacy, CHA University, 120 Haeryong-ro, Pochen-si, Gyenggi-do 11160, Korea.
| | - Taewoo Kim
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea.
| | - Young Taek Han
- College of Pharmacy, Dankook University, 119 Dandae-ro, Dongnam-gu, Cheonan 330-714, Korea.
| | - Young-Ger Suh
- College of Pharmacy, CHA University, 120 Haeryong-ro, Pochen-si, Gyenggi-do 11160, Korea.
| | - Jaemoo Chun
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea.
| | - Yeong Shik Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea.
| | - Kwang Seok Ahn
- Department of Science in Korean Medicine, Kyung Hee University, 24 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea.
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26
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Lee S, Lee H, Lee K, Kim J, Ko H. 1012 Activation of hedgehog signaling suppresses psoriasis-like epidermal hyperplasia and skin inflammation. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.1088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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27
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Donaldson K, Enns RA, Bressler B, Ko H. A107 DISEASE DISTRIBUTION AND CLINICAL FEATURES OF INFLAMMATORY BOWEL DISEASE IN PATIENTS WITH PRIMARY SCLEROSING CHOLANGITIS: A SINGLE-CENTRE RETROSPECTIVE ANALYSIS. J Can Assoc Gastroenterol 2019. [DOI: 10.1093/jcag/gwz006.106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- K Donaldson
- St. Paul’s Hospital, University of British Columbia, Vancouver, BC, Canada
| | - R A Enns
- St. Paul’s Hospital, University of British Columbia, Vancouver, BC, Canada
| | - B Bressler
- St. Paul’s Hospital, University of British Columbia, Vancouver, BC, Canada
| | - H Ko
- St. Paul’s Hospital, University of British Columbia, Vancouver, BC, Canada
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28
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Ashammakhi N, Ahadian S, Xu C, Montazerian H, Ko H, Nasiri R, Barros N, Khademhosseini A. Bioinks and bioprinting technologies to make heterogeneous and biomimetic tissue constructs. Mater Today Bio 2019; 1:100008. [PMID: 32159140 PMCID: PMC7061634 DOI: 10.1016/j.mtbio.2019.100008] [Citation(s) in RCA: 220] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 05/17/2019] [Accepted: 05/18/2019] [Indexed: 12/12/2022] Open
Abstract
The native tissues are complex structures consisting of different cell types, extracellular matrix materials, and biomolecules. Traditional tissue engineering strategies have not been able to fully reproduce biomimetic and heterogeneous tissue constructs because of the lack of appropriate biomaterials and technologies. However, recently developed three-dimensional bioprinting techniques can be leveraged to produce biomimetic and complex tissue structures. To achieve this, multicomponent bioinks composed of multiple biomaterials (natural, synthetic, or hybrid natural-synthetic biomaterials), different types of cells, and soluble factors have been developed. In addition, advanced bioprinting technologies have enabled us to print multimaterial bioinks with spatial and microscale resolution in a rapid and continuous manner, aiming to reproduce the complex architecture of the native tissues. This review highlights important advances in heterogeneous bioinks and bioprinting technologies to fabricate biomimetic tissue constructs. Opportunities and challenges to further accelerate this research area are also described.
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Affiliation(s)
- N. Ashammakhi
- Center for Minimally Invasive Therapeutics (C-MIT), University of California – Los Angeles, Los Angeles, CA, 90095, USA
- Department of Bioengineering, University of California – Los Angeles, Los Angeles, CA, 90095, USA
- Division of Plastic Surgery, Department of Surgery, Oulu University, Oulu, 8000, Finland
| | - S. Ahadian
- Center for Minimally Invasive Therapeutics (C-MIT), University of California – Los Angeles, Los Angeles, CA, 90095, USA
- Department of Bioengineering, University of California – Los Angeles, Los Angeles, CA, 90095, USA
| | - C. Xu
- Center for Minimally Invasive Therapeutics (C-MIT), University of California – Los Angeles, Los Angeles, CA, 90095, USA
- Department of Bioengineering, University of California – Los Angeles, Los Angeles, CA, 90095, USA
- School of Dentistry, The University of Queensland, Herston, QLD, 4006, Australia
| | - H. Montazerian
- Center for Minimally Invasive Therapeutics (C-MIT), University of California – Los Angeles, Los Angeles, CA, 90095, USA
- Department of Bioengineering, University of California – Los Angeles, Los Angeles, CA, 90095, USA
| | - H. Ko
- Center for Minimally Invasive Therapeutics (C-MIT), University of California – Los Angeles, Los Angeles, CA, 90095, USA
- Department of Bioengineering, University of California – Los Angeles, Los Angeles, CA, 90095, USA
| | - R. Nasiri
- Center for Minimally Invasive Therapeutics (C-MIT), University of California – Los Angeles, Los Angeles, CA, 90095, USA
- Department of Bioengineering, University of California – Los Angeles, Los Angeles, CA, 90095, USA
- Department of Mechanical Engineering, Sharif University of Technology, Tehran, 11365-11155, Iran
| | - N. Barros
- Center for Minimally Invasive Therapeutics (C-MIT), University of California – Los Angeles, Los Angeles, CA, 90095, USA
- Department of Bioengineering, University of California – Los Angeles, Los Angeles, CA, 90095, USA
| | - A. Khademhosseini
- Center for Minimally Invasive Therapeutics (C-MIT), University of California – Los Angeles, Los Angeles, CA, 90095, USA
- Department of Bioengineering, University of California – Los Angeles, Los Angeles, CA, 90095, USA
- Department of Radiological Sciences, University of California – Los Angeles, Los Angeles, CA, 90095, USA
- Department of Chemical and Biomolecular Engineering, University of California – Los Angeles, Los Angeles, CA, 90095, USA
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Ko H, MaloneBeach E, Miller A. INTERNALIZATION OF DOMAIN-SPECIFIC AGE STEREOTYPES: COMPARISONS BETWEEN UNIVERSITY STUDENTS, FACULTY, AND STAFF. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.1689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- H Ko
- Central Michigan University
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30
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Kim J, Tak S, Yoo Y, Ko H. FEASIBILITY OF AN INTEGRATIVE ACTIVITY PROGRAM FOR LOW-EDUCATED ELDERS WITH MILD DEMENTIA. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- J Kim
- Seoul National University
| | - S Tak
- Seoul National University
| | - Y Yoo
- Seoul National University
| | - H Ko
- Seoul National University
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31
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Wang X, Li X, Zhang L, Wong S, Wang M, Tse G, Dai R, Nakatsu G, Coker O, Chen Z, Ko H, Chan J, Liu T, Cheng C, Cheng A, To K, Plewczynski D, Sung J, Yu J, Gin T, Chan M, Wu W. Oncogenes expand during evolution to withstand somatic amplification. Ann Oncol 2018; 29:2254-2260. [PMID: 30204835 DOI: 10.1093/annonc/mdy397] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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32
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Cao S, Parelkar S, Ko H, Thompson P, Hayward L. CMT AND NEUROGENIC DISEASE. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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33
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Nap-Hill E, Suzuki M, Galorport C, Yonge J, Amar J, Bressler B, Ko H, Lam E, Ramji A, Rosenfeld G, Telford JJ, Whittaker S, Enns RA. A225 A NEW STANDARD: AN OPEN-LABEL TRIAL EXAMINING THE EFFECTIVENESS OF INDIVIDUALIZED WEB BASED COLONOSCOPY PREPARATION INSTRUCTION. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy009.225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- E Nap-Hill
- Department of Medicine, Division of Gastroenterology, St. Paul’s Hospital, UBC, Vancouver, BC, Canada
| | - M Suzuki
- Department of Medicine, Division of Gastroenterology, St. Paul’s Hospital, UBC, Vancouver, BC, Canada
| | - C Galorport
- Department of Medicine, Division of Gastroenterology, St. Paul’s Hospital, UBC, Vancouver, BC, Canada
| | - J Yonge
- Department of Medicine, Division of Gastroenterology, St. Paul’s Hospital, UBC, Vancouver, BC, Canada
| | - J Amar
- Department of Medicine, Division of Gastroenterology, St. Paul’s Hospital, UBC, Vancouver, BC, Canada
| | - B Bressler
- Department of Medicine, Division of Gastroenterology, St. Paul’s Hospital, UBC, Vancouver, BC, Canada
| | - H Ko
- Department of Medicine, Division of Gastroenterology, St. Paul’s Hospital, UBC, Vancouver, BC, Canada
| | - E Lam
- Department of Medicine, Division of Gastroenterology, St. Paul’s Hospital, UBC, Vancouver, BC, Canada
| | - A Ramji
- Department of Medicine, Division of Gastroenterology, St. Paul’s Hospital, UBC, Vancouver, BC, Canada
| | - G Rosenfeld
- Department of Medicine, Division of Gastroenterology, St. Paul’s Hospital, UBC, Vancouver, BC, Canada
| | - J J Telford
- Department of Medicine, Division of Gastroenterology, St. Paul’s Hospital, UBC, Vancouver, BC, Canada
| | - S Whittaker
- Department of Medicine, Division of Gastroenterology, St. Paul’s Hospital, UBC, Vancouver, BC, Canada
| | - R A Enns
- Department of Medicine, Division of Gastroenterology, St. Paul’s Hospital, UBC, Vancouver, BC, Canada
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34
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Yau A, Galorport C, Ko H, Coffin CS. A182 HEPATOCELLULAR CARCINOMA (HCC) SCREENING PRACTICES IN CHRONIC HEPATITIS B (HBV) AMONG CANADIAN GASTROENTEROLOGISTS AND HEPATOLOGISTS: AN ONLINE SURVEY. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy008.183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- A Yau
- Medicine, University of British Columbia, Vancouver, BC, Canada
| | - C Galorport
- Medicine, Div. of Gastroenterology, St. Paul’s Hospital, Vancouver, BC, Canada
| | - H Ko
- Medicine, University of British Columbia, Vancouver, BC, Canada
| | - C S Coffin
- Medicine, University of Calgary, Calgary, AB, Canada
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35
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Yonge J, Galorport C, Bressler B, Ko H, Telford JJ, Enns RA. A55 ASSESSMENT OF THE APPROPRIATE USE OF GASTROINTESTINAL ENDOSCOPY AT A TERTIARY CARE CENTRE. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy008.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J Yonge
- St. Paul’s Hospital, Vancouver, BC, Canada
| | | | - B Bressler
- St. Paul’s Hospital, Vancouver, BC, Canada
| | - H Ko
- St. Paul’s Hospital, Vancouver, BC, Canada
| | | | - R A Enns
- St. Paul’s Hospital, Vancouver, BC, Canada
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36
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Suzuki MM, Bardi M, Takach O, Galorport C, Yonge J, Harris N, Lam E, Telford JJ, Rosenfeld G, Ko H, Enns RA. A21 RANDOMIZED PROSPECTIVE STUDY: IMPACT OF THE PATIENT EDUCATION WEBSITE ON THE QUALITY OF OUTPATIENT BOWEL PREPARATION FOR COLONOSCOPY:. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy008.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- M M Suzuki
- Gastroenterology, Pacific Gastroenterology Associates, Vancouver, BC, Canada
| | - M Bardi
- Medicine, UBC, Vancouver, BC, Canada
| | - O Takach
- University of British Columbia, Burnaby, BC, Canada
| | - C Galorport
- Medicine, Div. of Gastroenterology, St. Paul’s Hospital, Vancouver, BC, Canada
| | - J Yonge
- University of British Columbia, Burnaby, BC, Canada
| | - N Harris
- Gastroenterology, St. Paul’s Hospital, Kamloops, BC, Canada
| | - E Lam
- Gastroenterology, St. Paul’s Hospital, Kamloops, BC, Canada
| | - J J Telford
- University of British Columbia, Burnaby, BC, Canada
| | | | - H Ko
- Medicine, University of British Columbia, Vancouver, BC, Canada
| | - R A Enns
- Medicine, St Paul, Vancouver, BC, Canada
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37
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Nap-Hill E, Suzuki M, Galorport C, Yonge J, Amar J, Bressler B, Ko H, Lam E, Ramji A, Rosenfeld G, Telford JJ, Whittaker S, Enns RA. A57 A NEW STANDARD: AN OPEN-LABEL TRIAL EXAMINING THE EFFECTIVENESS OF INDIVIDUALIZED WEB BASED COLONOSCOPY PREPARATION INSTRUCTION. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy008.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- E Nap-Hill
- Medicine, Div. of Gastroenterology, St. Paul’s Hospital, Vancouver, BC, Canada
| | - M Suzuki
- Medicine, Div. of Gastroenterology, St. Paul’s Hospital, Vancouver, BC, Canada
| | - C Galorport
- Medicine, Div. of Gastroenterology, St. Paul’s Hospital, Vancouver, BC, Canada
| | - J Yonge
- Medicine, Div. of Gastroenterology, St. Paul’s Hospital, Vancouver, BC, Canada
| | - J Amar
- Medicine, Div. of Gastroenterology, St. Paul’s Hospital, Vancouver, BC, Canada
| | - B Bressler
- Medicine, Div. of Gastroenterology, St. Paul’s Hospital, Vancouver, BC, Canada
| | - H Ko
- Medicine, Div. of Gastroenterology, St. Paul’s Hospital, Vancouver, BC, Canada
| | - E Lam
- Medicine, Div. of Gastroenterology, St. Paul’s Hospital, Vancouver, BC, Canada
| | - A Ramji
- Medicine, Div. of Gastroenterology, St. Paul’s Hospital, Vancouver, BC, Canada
| | - G Rosenfeld
- Medicine, Div. of Gastroenterology, St. Paul’s Hospital, Vancouver, BC, Canada
| | - J J Telford
- Medicine, Div. of Gastroenterology, St. Paul’s Hospital, Vancouver, BC, Canada
| | - S Whittaker
- Medicine, Div. of Gastroenterology, St. Paul’s Hospital, Vancouver, BC, Canada
| | - R A Enns
- Medicine, Div. of Gastroenterology, St. Paul’s Hospital, Vancouver, BC, Canada
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Park JI, Choe A, Kim MP, Ko H, Lee TH, Noh SM, Kim JC, Cheong IW. Water-adaptive and repeatable self-healing polymers bearing bulky urea bonds. Polym Chem 2018. [DOI: 10.1039/c7py01655g] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A crosslinked copolymer having a reversible covalent bond between a bulky amine and an isocyanate presents reshapable, repeatable, and water-adaptive self-healing properties.
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Affiliation(s)
- J. I. Park
- Department of Applied Chemistry
- Kyungpook National University
- Daegu 41566
- Republic of Korea
| | - A. Choe
- School of Energy and Chemical Engineering
- Ulsan National Institute of Science and Technology
- Ulsan 44919
- Korea
| | - M. P. Kim
- School of Energy and Chemical Engineering
- Ulsan National Institute of Science and Technology
- Ulsan 44919
- Korea
| | - H. Ko
- School of Energy and Chemical Engineering
- Ulsan National Institute of Science and Technology
- Ulsan 44919
- Korea
| | - T. H. Lee
- Research Center for Green Fine Chemicals
- Korea Research Institute of Chemical Technology
- Ulsan
- Republic of Korea
| | - S. M. Noh
- Research Center for Green Fine Chemicals
- Korea Research Institute of Chemical Technology
- Ulsan
- Republic of Korea
| | - J. C. Kim
- Research Center for Green Fine Chemicals
- Korea Research Institute of Chemical Technology
- Ulsan
- Republic of Korea
| | - I. W. Cheong
- Department of Applied Chemistry
- Kyungpook National University
- Daegu 41566
- Republic of Korea
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Ko H, Seong M, Jeong HE. A micropatterned elastomeric surface with enhanced frictional properties under wet conditions and its application. Soft Matter 2017; 13:8419-8425. [PMID: 29082413 DOI: 10.1039/c7sm01493g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Engineered surfaces that have high friction under wet or lubricated conditions are important in many practical applications. However, it is not easy to achieve stable high friction under wet conditions because a layer of fluid prevents direct solid-solid contact. Here, we report a micropatterned elastomeric surface with superior wet friction. The surface has unique arch-shaped microstructures arrayed in a circle on the surface to provide high friction on wet or flooded surfaces. The arch-shaped micropatterned surface exhibits remarkably enhanced and stable friction under wet conditions, surpassing even the performance of the hexagonal patterns of tree frogs, owing to the large contact surface and the optimal shape of drainage channels. Robotic substrate transportation systems equipped with the micropatterned surfaces can manipulate a delicate wet substrate without any sliding in a highly stable and reproducible manner, demonstrating the superior frictional capabilities of the surface under wet conditions.
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Affiliation(s)
- H Ko
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea.
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Verma S, Wolkenstein P, Le L, Lee J, Widemann B, Brownell I, Jarnagin K, Lavker R, Legius E, Anderson R, Plotkin S, Weinberg H, Casey D, Ko H, LaRosa S, Knight P, Parides M, Bora N, Morris J, Riccardi V, Korf B, Blakeley J. LB951 Establishing a roadmap for therapeutics development for cutaneous neurofibromas. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Cheng Y, Ko H. GENDERED ALLOCATION OF SUPPORT FOR AGING PARENTS AND PARENTS-IN-LAW IN TAIWAN. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.3015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y. Cheng
- New graduate, Sunnyvale, California
| | - H. Ko
- Central Michigan University, Mt. Pleasant, Michigan,
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Kim HS, Kim T, Ko H, Lee J, Kim YS, Suh YG. Identification of galiellalactone-based novel STAT3-selective inhibitors with cytotoxic activities against triple-negative breast cancer cell lines. Bioorg Med Chem 2017; 25:5032-5040. [PMID: 28705432 DOI: 10.1016/j.bmc.2017.06.036] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2017] [Revised: 06/20/2017] [Accepted: 06/21/2017] [Indexed: 01/05/2023]
Abstract
Signal transducer and activator of transcription 3 (STAT3) is phosphorylated in breast cancer cells, particularly triple-negative breast cancers (TNBCs). Therefore, the inhibition of constitutive phosphorylated STAT3 is a promising therapeutic for TNBC treatment. Recently, a series of novel STAT3 inhibitors based on natural (-)-galiellalactone have been identified to inhibit STAT3 phosphorylation at the Tyr705 residue. Interestingly, the truncation of the cyclohexene moiety of (-)-galiellalactone to [3.3] bicyclic lactone as a pharmacophoric core produced improved cytotoxic effects against TNBCs. The potent analogues 16 and 17, identified from a STAT3-mediated luciferase reporter assay, selectively inhibited the STAT3 signaling pathway without affecting STAT1 or STAT5.
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Affiliation(s)
- Hyun Su Kim
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Taewoo Kim
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Hyejin Ko
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jeeyeon Lee
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Yeong Shik Kim
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Young-Ger Suh
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea; College of Pharmacy, CHA University, 120 Haeryong-ro, Pochen-si, Gyeonggi-do 11160, Republic of Korea.
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Shin J, Kim J, Kim J, Ko H, Gwon D. A prospective randomized study of a covered metallic ureteral stent versus double J Stent for malignant ureteral obstruction: PRODUCE study (NCT01823575). J Vasc Interv Radiol 2017. [DOI: 10.1016/j.jvir.2016.12.944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Choi H, Kim S, Ko H, Kim Y, Park CG. Development and preliminary evaluation of culturally specific web-based intervention for parents of adolescents. J Psychiatr Ment Health Nurs 2016; 23:489-501. [PMID: 27500792 DOI: 10.1111/jpm.12327] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/20/2016] [Indexed: 12/28/2022]
Abstract
UNLABELLED WHAT IS KNOWN ON THE SUBJECT?: Problematic parent-child relationships have been identified as one of the main predictors of adolescents' mental health problems, but there are few existing interventions that address this issue. The format and delivery method of existing interventions for parents are relatively inaccessible for parents with full-time jobs and families living in rural areas. WHAT DOES THIS PAPER ADD TO EXISTING KNOWLEDGE?: The newly developed 'Stepping Stone' culturally specific web-based intervention, which is intended to help Korean parents of adolescents to acquire both knowledge and communication and conflict management skills, was found to be feasible and well-accepted by parents. This study enabled us to identify areas for improvement in the content and format of the intervention and strategies. This will potentially increase effect sizes for the outcome variables of parents' perception and behaviours. WHAT ARE THE IMPLICATIONS FOR PRACTICE?: This web-based intervention could be delivered across diverse settings, such as schools and community mental health centers, to increase parents' knowledge of adolescent's mental health and allow for early detection of mental health problems. Mental health nurses working in schools may spend a significant amount of time addressing students' mental health issues; thus, this web-based intervention could be a useful resource to share with parents and children. In this way, the mental health nurses could facilitate parental engagement in the intervention and then help them to continue to apply and practice the knowledge and skills obtained through the program. ABSTRACT Introduction There is a need for accessible, culturally specific web-based interventions to address parent-child relationships and adolescents' mental health. Aims This study developed and conducted a preliminary evaluation of a 4-week web-based intervention for parents of adolescents aged 11 to 16 years in Korea. Methods We used a two-group, repeated measures, quasi-experimental study design to assess the feasibility of developing and implementing a web-based intervention for parents. Descriptive statistics, chi-square and t tests, and mixed effect modeling were used for data analysis. Results The intervention and 1-month follow-up survey were completed by 47 parents in the intervention group and 46 parents in the attention control (AC) group. The intervention was found to be feasible and well-accepted by parents. Discussion This culturally specific web-based intervention is a useful tool for knowledge dissemination among large numbers of parents. Areas for improvement in the content and format of the intervention and strategies to elicit significant parent-child interactions are provided. Implications for practice and conclusion The intervention could be disseminated in collaboration with mental health nurses working in schools to facilitate parents' participation.
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Affiliation(s)
- H Choi
- College of Nursing & The Research Institute of Nursing Science, Seoul National University, Seoul, Korea.
| | - S Kim
- College of Nursing, Seoul National University, Seoul, Korea
| | - H Ko
- College of Nursing, Seoul National University, Seoul, Korea
| | - Y Kim
- College of Nursing, Seoul National University, Seoul, Korea
| | - C G Park
- University of Illinois at Chicago, College of Nursing, Chicago, IL
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Moran L, Ko H, Misso M, Marsh K, Noakes M, Talbot M, Frearson M, Thondan M, Stepto N, Teede H. Dietary composition in the treatment of polycystic ovary syndrome: a systematic review to inform evidence-based guidelines. Hum Reprod Update 2013. [DOI: 10.1093/humupd/dmt051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ko H, Park SY, Cha EJ, Sohn JS. Primary small cell carcinoma of the urinary bladder: a case report demonstrates cytological findings in SurePath liquid-based cytology. Cytopathology 2013; 25:135-6. [PMID: 23682948 DOI: 10.1111/cyt.12067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- H Ko
- Department of Pathology, Konyang University Hospital, Daejeon, South Korea
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Youn HS, You H, Im I, Lee Y, Bae MH, Lee SK, Ko H, Kim YC, Eom SH. Design, synthesis and X-ray crystallographic study of NAmPRTase inhibitors as anti-cancer agents. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311092336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Wang C, Tsai Y, Cheung Y, Ko H, Ni Y, Feng P, Chen Y, Yang P, Chang G. Baseline results of lung cancer screening program for family lung cancer risk with low-dose spiral CT in Taiwan. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.7098] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Jeong YC, Kim SH, Ko H, Song K, Ahn KH, Yang SI. Photochromic optical memory based on non-destructive IR read-out. Photochem Photobiol Sci 2009; 8:1590-4. [DOI: 10.1039/b906891k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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