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  1. Article ; Online: xCT-mediated glutamate excretion in white adipocytes stimulates interferon-γ production by natural killer cells in obesity.

    Kim, Hee-Hoon / Shim, Young-Ri / Kim, Ha Neul / Yang, Keungmo / Ryu, Tom / Kim, Kyurae / Choi, Sung Eun / Kim, Min Jeong / Woo, Chaerin / Chung, Katherine Po Sin / Hong, Song Hwa / Shin, Hyemi / Suh, Jae Myoung / Jung, Youngae / Hwang, Geum-Sook / Kim, Won / Kim, Seok-Hwan / Eun, Hyuk Soo / Seong, Je Kyung /
    Jeong, Won-Il

    Cell reports

    2023  Volume 42, Issue 6, Page(s) 112636

    Abstract: Obesity-mediated hypoxic stress underlies inflammation, including interferon (IFN)-γ production by natural killer (NK) cells in white adipose tissue. However, the effects of obesity on NK cell IFN-γ production remain obscure. Here, we show that hypoxia ... ...

    Abstract Obesity-mediated hypoxic stress underlies inflammation, including interferon (IFN)-γ production by natural killer (NK) cells in white adipose tissue. However, the effects of obesity on NK cell IFN-γ production remain obscure. Here, we show that hypoxia promotes xCT-mediated glutamate excretion and C-X-C motif chemokine ligand 12 (CXCL12) expression in white adipocytes, resulting in CXCR4
    MeSH term(s) Animals ; Humans ; Mice ; Adipocytes, White/metabolism ; Glutamic Acid/metabolism ; Interferon-gamma/metabolism ; Killer Cells, Natural/metabolism ; Obesity/metabolism ; Amino Acid Transport System y+/metabolism
    Chemical Substances Glutamic Acid (3KX376GY7L) ; Interferon-gamma (82115-62-6) ; SLC7A11 protein, human ; Slc7a11 protein, mouse ; Amino Acid Transport System y+
    Language English
    Publishing date 2023-06-12
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2649101-1
    ISSN 2211-1247 ; 2211-1247
    ISSN (online) 2211-1247
    ISSN 2211-1247
    DOI 10.1016/j.celrep.2023.112636
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Similarities and Differences Between Thyroid Imaging Reporting and Data Systems.

    Yoon, So Jin / Na, Dong Gyu / Gwon, Hye Yun / Paik, Wooyul / Kim, Won Jun / Song, Jae Seok / Shim, Myoung Sook

    AJR. American journal of roentgenology

    2019  Volume 213, Issue 2, Page(s) W76–W84

    Abstract: OBJECTIVE. ...

    Abstract OBJECTIVE.
    MeSH term(s) Biopsy, Fine-Needle ; Diagnosis, Differential ; Humans ; Image-Guided Biopsy ; Practice Guidelines as Topic ; Republic of Korea ; Risk Assessment ; Societies, Medical ; Thyroid Neoplasms/pathology ; Thyroid Nodule/pathology ; Ultrasonography, Interventional
    Language English
    Publishing date 2019-03-27
    Publishing country United States
    Document type Comparative Study ; Journal Article
    ZDB-ID 82076-3
    ISSN 1546-3141 ; 0361-803X ; 0092-5381
    ISSN (online) 1546-3141
    ISSN 0361-803X ; 0092-5381
    DOI 10.2214/AJR.18.20510
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Identification of the Active Ingredient and Beneficial Effects of

    Lee, Ji Hwan / Lee, Sullim / Nguyen, Quynh Nhu / Phung, Hung Manh / Shin, Myoung-Sook / Kim, Jae-Yong / Choi, Hyukjae / Shim, Sang Hee / Kang, Ki Sung

    Biomolecules

    2021  Volume 11, Issue 7

    Abstract: Estrogen replacement therapy is a treatment to relieve the symptoms of menopause. Many studies suggest that natural bioactive ingredients from plants resemble estrogen in structure and biological functions and can relieve symptoms of menopause. The fruit ...

    Abstract Estrogen replacement therapy is a treatment to relieve the symptoms of menopause. Many studies suggest that natural bioactive ingredients from plants resemble estrogen in structure and biological functions and can relieve symptoms of menopause. The fruit of
    MeSH term(s) Animals ; Apigenin/pharmacology ; Biomarkers/blood ; Estrogens, Non-Steroidal/chemistry ; Estrogens, Non-Steroidal/pharmacology ; Female ; Flavonoids/pharmacology ; Fruit/chemistry ; Humans ; MCF-7 Cells ; Medicine, Korean Traditional ; Menopause/drug effects ; Ovariectomy ; Plant Extracts/analysis ; Plant Extracts/chemistry ; Plant Extracts/pharmacology ; Plants, Medicinal/chemistry ; Rats, Sprague-Dawley ; Uterus/drug effects ; Vitex/chemistry ; Weight Gain/drug effects ; Rats
    Chemical Substances Biomarkers ; Estrogens, Non-Steroidal ; Flavonoids ; Plant Extracts ; casticin (753GT729OU) ; Apigenin (7V515PI7F6) ; vitexin (9VP70K75OK)
    Language English
    Publishing date 2021-07-16
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2701262-1
    ISSN 2218-273X ; 2218-273X
    ISSN (online) 2218-273X
    ISSN 2218-273X
    DOI 10.3390/biom11071033
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: xCT-mediated glutamate excretion in white adipocytes stimulates interferon-γ production by natural killer cells in obesity

    Hee-Hoon Kim / Young-Ri Shim / Ha Neul Kim / Keungmo Yang / Tom Ryu / Kyurae Kim / Sung Eun Choi / Min Jeong Kim / Chaerin Woo / Katherine Po Sin Chung / Song Hwa Hong / Hyemi Shin / Jae Myoung Suh / Youngae Jung / Geum-Sook Hwang / Won Kim / Seok-Hwan Kim / Hyuk Soo Eun / Je Kyung Seong /
    Won-Il Jeong

    Cell Reports, Vol 42, Iss 6, Pp 112636- (2023)

    2023  

    Abstract: Summary: Obesity-mediated hypoxic stress underlies inflammation, including interferon (IFN)-γ production by natural killer (NK) cells in white adipose tissue. However, the effects of obesity on NK cell IFN-γ production remain obscure. Here, we show that ... ...

    Abstract Summary: Obesity-mediated hypoxic stress underlies inflammation, including interferon (IFN)-γ production by natural killer (NK) cells in white adipose tissue. However, the effects of obesity on NK cell IFN-γ production remain obscure. Here, we show that hypoxia promotes xCT-mediated glutamate excretion and C-X-C motif chemokine ligand 12 (CXCL12) expression in white adipocytes, resulting in CXCR4+ NK cell recruitment. Interestingly, this spatial proximity between adipocytes and NK cells induces IFN-γ production in NK cells by stimulating metabotropic glutamate receptor 5 (mGluR5). IFN-γ then triggers inflammatory activation of macrophages and augments xCT and CXCL12 expression in adipocytes, forming a bidirectional pathway. Genetic or pharmacological inhibition of xCT, mGluR5, or IFN-γ receptor in adipocytes or NK cells alleviates obesity-related metabolic disorders in mice. Consistently, patients with obesity showed elevated levels of glutamate/mGluR5 and CXCL12/CXCR4 axes, suggesting that a bidirectional pathway between adipocytes and NK cells could be a viable therapeutic target in obesity-related metabolic disorders.
    Keywords CP: Immunology ; CP: Metabolism ; Biology (General) ; QH301-705.5
    Language English
    Publishing date 2023-06-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Neuroprotective Compound from an Endophytic Fungus, Colletotrichum sp. JS-0367.

    Song, Ji Hoon / Lee, Changyeol / Lee, Dahae / Kim, Soonok / Bang, Sunghee / Shin, Myoung-Sook / Lee, Jun / Kang, Ki Sung / Shim, Sang Hee

    Journal of natural products

    2018  Volume 81, Issue 6, Page(s) 1411–1416

    Abstract: Colletotrichum sp. JS-0367 was isolated from Morus alba (mulberry), identified, and cultured on a large scale for chemical investigation. One new anthraquinone (1) and three known anthraquinones (2-4) were isolated and identified using spectroscopic ... ...

    Abstract Colletotrichum sp. JS-0367 was isolated from Morus alba (mulberry), identified, and cultured on a large scale for chemical investigation. One new anthraquinone (1) and three known anthraquinones (2-4) were isolated and identified using spectroscopic methods including 1D/2D-NMR and HRESIMS. Although the neuroprotective effects of some anthraquinones have been reported, the biological activities of the four anthraquinones isolated in this study have not been reported. Therefore, the neuroprotective effects of these compounds were determined against murine hippocampal HT22 cell death induced by glutamate. Compound 4, evariquinone, showed strong protective effects against HT22 cell death induced by glutamate by the inhibition of intracellular ROS accumulation and Ca
    MeSH term(s) Animals ; Anthraquinones/chemistry ; Anthraquinones/pharmacology ; Cell Death/drug effects ; Cell Line ; Colletotrichum/chemistry ; Glutamic Acid/metabolism ; Hippocampus/drug effects ; Hippocampus/metabolism ; Mice ; Mitogen-Activated Protein Kinases/metabolism ; Morus/chemistry ; Neurons/drug effects ; Neurons/metabolism ; Neuroprotective Agents/chemistry ; Neuroprotective Agents/pharmacology ; Oxidative Stress/drug effects ; Phosphorylation/drug effects ; Reactive Oxygen Species/metabolism
    Chemical Substances Anthraquinones ; Neuroprotective Agents ; Reactive Oxygen Species ; Glutamic Acid (3KX376GY7L) ; Mitogen-Activated Protein Kinases (EC 2.7.11.24)
    Language English
    Publishing date 2018-05-23
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 304325-3
    ISSN 1520-6025 ; 0163-3864
    ISSN (online) 1520-6025
    ISSN 0163-3864
    DOI 10.1021/acs.jnatprod.8b00033
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Neuroprotective Compound from an Endophytic Fungus, Colletotrichum sp. JS-0367

    Song, Ji Hoon / Changyeol Lee / Dahae Lee / Jun Lee / Ki Sung Kang / Myoung-Sook Shin / Sang Hee Shim / Soonok Kim / Sunghee Bang

    Journal of natural products. 2018 May 23, v. 81, no. 6

    2018  

    Abstract: Colletotrichum sp. JS-0367 was isolated from Morus alba (mulberry), identified, and cultured on a large scale for chemical investigation. One new anthraquinone (1) and three known anthraquinones (2–4) were isolated and identified using spectroscopic ... ...

    Abstract Colletotrichum sp. JS-0367 was isolated from Morus alba (mulberry), identified, and cultured on a large scale for chemical investigation. One new anthraquinone (1) and three known anthraquinones (2–4) were isolated and identified using spectroscopic methods including 1D/2D-NMR and HRESIMS. Although the neuroprotective effects of some anthraquinones have been reported, the biological activities of the four anthraquinones isolated in this study have not been reported. Therefore, the neuroprotective effects of these compounds were determined against murine hippocampal HT22 cell death induced by glutamate. Compound 4, evariquinone, showed strong protective effects against HT22 cell death induced by glutamate by the inhibition of intracellular ROS accumulation and Ca2+ influx triggered by glutamate. Immunoblot analysis revealed that compound 4 reduced the phosphorylation of MAPKs (JNK, ERK1/2, and p38) induced by glutamate. Furthermore, compound 4 strongly attenuated glutamate-mediated apoptotic cell death.
    Keywords anthraquinones ; apoptosis ; calcium ; chemical structure ; Colletotrichum ; endophytes ; fungi ; mass spectrometry ; mice ; mitogen-activated protein kinase ; Morus alba ; mulberries ; neuroprotective effect ; nuclear magnetic resonance spectroscopy ; phosphorylation
    Language English
    Dates of publication 2018-0523
    Size p. 1411-1416.
    Publishing place American Chemical Society and American Society of Pharmacognosy
    Document type Article
    ZDB-ID 304325-3
    ISSN 1520-6025 ; 0163-3864
    ISSN (online) 1520-6025
    ISSN 0163-3864
    DOI 10.1021/acs.jnatprod.8b00033
    Database NAL-Catalogue (AGRICOLA)

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  7. Article ; Online: SUMO modification of NZFP mediates transcriptional repression through TBP binding.

    Kim, Mijin / Chen, Zifan / Shim, Myoung Sup / Lee, Myoung Sook / Kim, Ji Eon / Kwon, Young Eun / Yoo, Tack Jin / Kim, Jin Young / Bang, Je Young / Carlson, Bradley A / Seol, Jae Hong / Hatfield, Dolph L / Lee, Byeong Jae

    Molecules and cells

    2012  Volume 35, Issue 1, Page(s) 70–78

    Abstract: The negatively regulating zinc finger protein (NZFP) is an essential transcription repressor required for early development during gastrulation in Xenopus laevis. In this study, we found that NZFP interacts with the small ubiquitin-like modifier (SUMO) ... ...

    Abstract The negatively regulating zinc finger protein (NZFP) is an essential transcription repressor required for early development during gastrulation in Xenopus laevis. In this study, we found that NZFP interacts with the small ubiquitin-like modifier (SUMO) conjugation E2 enzyme, Ubc9, and contains three putative SUMO conjugation sites. Studies with NZFP mutants containing mutations at the putative SUMO conjugation sites showed that these sites were able to be modified independently with SUMO. NZFP was found to be localized in the same nuclear bodies with SUMO-1. However, sumoylation of NZFP did not play a role either in the translocation of NZFP into the nucleus or on nuclear body formation. While wild type NZFP showed significant transcriptional repression, SUMO-conjugation site mutants manifested a decrease in transcriptional repression activity which is reversely proportional to the amount of sumoylation. The sumoylation defective mutant lost its TBP binding activity, while wild type NZFP interacted with TBP and inhibited transcription complex formation. These results strongly suggest that the sumoylation of NZFP facilitates NZFP to bind to TBP and the NZFP/TBP complex then represses the transcription of the target gene by inhibiting basal transcription complex formation.
    MeSH term(s) Animals ; Blotting, Western ; COS Cells ; Cell Nucleus/genetics ; Cell Nucleus/metabolism ; Cells, Cultured ; Chlorocebus aethiops ; Immunoenzyme Techniques ; Immunoprecipitation ; Protein Processing, Post-Translational ; Recombinant Proteins/genetics ; Recombinant Proteins/metabolism ; Repressor Proteins/genetics ; Repressor Proteins/metabolism ; SUMO-1 Protein/genetics ; SUMO-1 Protein/metabolism ; Sumoylation ; TATA-Box Binding Protein/metabolism ; Transcription, Genetic ; Two-Hybrid System Techniques ; Xenopus laevis
    Chemical Substances Recombinant Proteins ; Repressor Proteins ; SUMO-1 Protein ; TATA-Box Binding Protein ; ZNF182 protein, Xenopus
    Language English
    Publishing date 2012-12-21
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1148964-9
    ISSN 0219-1032 ; 1016-8478
    ISSN (online) 0219-1032
    ISSN 1016-8478
    DOI 10.1007/s10059-013-2281-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Isolation and identification of phenolic compounds from the seeds of Perilla frutescens (L.) and their inhibitory activities against α-glucosidase and aldose reductase.

    Ha, Tae Joung / Lee, Jin Hwan / Lee, Myoung-Hee / Lee, Byeong Won / Kwon, Hyun Sook / Park, Chang-Hwan / Shim, Kang-Bo / Kim, Hyun-Tae / Baek, In-Youl / Jang, Dae Sik

    Food chemistry

    2012  Volume 135, Issue 3, Page(s) 1397–1403

    Abstract: Five phenolic compounds were isolated from the seeds of Perilla (Perilla frutescens L.) using gradient solvent fractionation, silica gel column chromatography, and preparative high-performance liquid chromatography (HPLC). Their chemical structures were ... ...

    Abstract Five phenolic compounds were isolated from the seeds of Perilla (Perilla frutescens L.) using gradient solvent fractionation, silica gel column chromatography, and preparative high-performance liquid chromatography (HPLC). Their chemical structures were identified as caffeic acid-3-O-glucoside (1), rosmarinic acid-3-O-glucoside (2), rosmarinic acid (3), luteolin (4), and apigenin (5) using NMR spectroscopy and HPLC-ESI/MS analysis. Among them, luteolin (4) inhibited α-glucosidase (EC 3.2.1.20) with IC(50) value of 45.4μM. The inhibition kinetic analysed by Dixon plot indicate that luteolin is a noncompetitive inhibitor, and the inhibition constant K(I) was calculated at 45.0μM. Moreover, rosmarinic acid (3) and luteolin (4) inhibited recombinant human aldose reductase (EC 1.1.1.21) with IC(50) values of 11.2 and 0.6μM, respectively. Notably, the inhibition kinetic of luteolin (4) follows a hyperbolic dependence on aldose reductase inhibition by Dixon plot. Thus, inhibition kinetic indicates that luteolin (4) is a mixed-type inhibitor.
    MeSH term(s) Aldehyde Reductase/analysis ; Aldehyde Reductase/antagonists & inhibitors ; Enzyme Inhibitors/chemistry ; Enzyme Inhibitors/isolation & purification ; Enzyme Inhibitors/pharmacology ; Glycoside Hydrolase Inhibitors ; Humans ; Perilla frutescens/chemistry ; Phenols/chemistry ; Phenols/isolation & purification ; Phenols/pharmacology ; Plant Extracts/chemistry ; Plant Extracts/isolation & purification ; Plant Extracts/pharmacology ; Seeds/chemistry ; alpha-Glucosidases/analysis
    Chemical Substances Enzyme Inhibitors ; Glycoside Hydrolase Inhibitors ; Phenols ; Plant Extracts ; Aldehyde Reductase (EC 1.1.1.21) ; alpha-Glucosidases (EC 3.2.1.20)
    Language English
    Publishing date 2012-12-01
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 243123-3
    ISSN 1873-7072 ; 0308-8146
    ISSN (online) 1873-7072
    ISSN 0308-8146
    DOI 10.1016/j.foodchem.2012.05.104
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Effects of spironolactone and losartan on diabetic nephropathy in a type 2 diabetic rat model.

    Lee, Mi Young / Shim, Myoung Sook / Kim, Bo Hwan / Hong, Soon Won / Choi, Ran / Lee, Eun Young / Nam, Soo Min / Kim, Gun Woo / Shin, Jang Yel / Shin, Young Goo / Chung, Choon Hee

    Diabetes & metabolism journal

    2011  Volume 35, Issue 2, Page(s) 130–137

    Abstract: Background: While there is an evidence that the anti-inflammatory properties of spironolactone can attenuate proteinuria in type 2 diabetes, its effects on vascular endothelial growth factor (VEGF) expression in diabetic nephropathy have not been ... ...

    Abstract Background: While there is an evidence that the anti-inflammatory properties of spironolactone can attenuate proteinuria in type 2 diabetes, its effects on vascular endothelial growth factor (VEGF) expression in diabetic nephropathy have not been clearly defined. In this study, we examined the effects of spironolactone, losartan, and a combination of these two drugs on albuminuria, renal VEGF expression, and inflammatory and oxidative stress markers in a type 2 diabetic rat model.
    Methods: Thirty-three Otsuka-Long-Evans-Tokushima-Fatty (OLETF) rats were divided into four groups and treated with different medication regimens from weeks 25 to 50; OLETF diabetic controls (n=5), spironolactone-treated (n=10), losartan-treated (n=9), and combination of spironolactone- and losartan-treated (n=9).
    Results: At week 50, the albumin-to-creatinine ratio was significantly decreased in the losartan and combination groups compared to the control OLETF group. No decrease was detected in the spironolactone group. There was a significant reduction in renal VEGF, transforming growth factor (TGF)-β, and type IV collagen mRNA levels in the spironolactone- and combination regimen-treated groups. Twenty-four hour urine monocyte chemotactic protein-1 levels were comparable in all four groups but did show a decreasing trend in the losartan and combination regimen groups. Twenty-four hour urine malondialdehyde levels were significantly decreased in the spironolactone- and combination regimen-treated groups.
    Conclusion: These results suggest that losartan alone and a combined regimen of spironolactone and losartan could ameliorate albuninuria by reducing renal VEGF expression. Also, simultaneous treatment with spironolactone and losartan may have protective effects against diabetic nephropathy by decreasing TGF-β and type IV collagen expression and by reducing oxidative stress in a type 2 diabetic rat model.
    Language English
    Publishing date 2011-04-30
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2602402-0
    ISSN 2233-6087 ; 2233-6087
    ISSN (online) 2233-6087
    ISSN 2233-6087
    DOI 10.4093/dmj.2011.35.2.130
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Isolation and identification of phenolic compounds from the seeds of Perilla frutescens (L.) and their inhibitory activities against α-glucosidase and aldose reductase

    Ha, Tae Joung / Lee, Jin Hwan / Lee, Myoung-Hee / Lee, Byeong Won / Kwon, Hyun Sook / Park, Chang-Hwan / Shim, Kang-Bo / Kim, Hyun-Tae / Baek, In-Youl / Jang, Dae Sik

    Food chemistry. 2012 Dec. 1, v. 135, no. 3

    2012  

    Abstract: Five phenolic compounds were isolated from the seeds of Perilla (Perilla frutescens L.) using gradient solvent fractionation, silica gel column chromatography, and preparative high-performance liquid chromatography (HPLC). Their chemical structures were ... ...

    Abstract Five phenolic compounds were isolated from the seeds of Perilla (Perilla frutescens L.) using gradient solvent fractionation, silica gel column chromatography, and preparative high-performance liquid chromatography (HPLC). Their chemical structures were identified as caffeic acid-3-O-glucoside (1), rosmarinic acid-3-O-glucoside (2), rosmarinic acid (3), luteolin (4), and apigenin (5) using NMR spectroscopy and HPLC–ESI/MS analysis. Among them, luteolin (4) inhibited α-glucosidase (EC 3.2.1.20) with IC50 value of 45.4μM. The inhibition kinetic analysed by Dixon plot indicate that luteolin is a noncompetitive inhibitor, and the inhibition constant KI was calculated at 45.0μM. Moreover, rosmarinic acid (3) and luteolin (4) inhibited recombinant human aldose reductase (EC 1.1.1.21) with IC50 values of 11.2 and 0.6μM, respectively. Notably, the inhibition kinetic of luteolin (4) follows a hyperbolic dependence on aldose reductase inhibition by Dixon plot. Thus, inhibition kinetic indicates that luteolin (4) is a mixed-type inhibitor.
    Keywords Perilla frutescens ; alpha-glucosidase ; apigenin ; chemical structure ; fractionation ; high performance liquid chromatography ; luteolin ; nuclear magnetic resonance spectroscopy ; rosmarinic acid ; seeds ; silica gel
    Language English
    Dates of publication 2012-1201
    Size p. 1397-1403.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 243123-3
    ISSN 1873-7072 ; 0308-8146
    ISSN (online) 1873-7072
    ISSN 0308-8146
    DOI 10.1016/j.foodchem.2012.05.104
    Database NAL-Catalogue (AGRICOLA)

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