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  1. Article ; Online: Corrigendum.

    Shyu, Kou-Gi

    European journal of clinical investigation

    2019  Volume 49, Issue 1, Page(s) e13046

    Language English
    Publishing date 2019-01-29
    Publishing country England
    Document type Journal Article ; Published Erratum
    ZDB-ID 186196-7
    ISSN 1365-2362 ; 0014-2972 ; 0960-135X
    ISSN (online) 1365-2362
    ISSN 0014-2972 ; 0960-135X
    DOI 10.1111/eci.13046
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Exosomal MALAT1 from macrophages treated with high levels of glucose upregulates LC3B expression via miR-204-5p downregulation.

    Kou-Gi, Shyu / Wang, Bao-Wei / Pan, Chun-Ming / Fang, Wei-Jen / Lin, Chiu-Mei

    Journal of the Chinese Medical Association : JCMA

    2024  

    Abstract: Background: Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) plays a critical role in the pathophysiology of diabetes-related complications. However, whether macrophage-derived MALAT1 affects autophagic activity under hyperglycemic ... ...

    Abstract Background: Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) plays a critical role in the pathophysiology of diabetes-related complications. However, whether macrophage-derived MALAT1 affects autophagic activity under hyperglycemic conditions is unclear. Therefore, we investigated the molecular regulatory mechanisms of macrophage-derived MALAT1 and autophagy under hyperglycemic conditions.
    Methods: Hyperglycemia was induced by culturing macrophages in 25 mM glucose for 1 h. Exosomes were extracted from the culture media. A rat model of carotid artery balloon injury was established to assess the effect of MALAT1 on vascular injury. Reverse transcription, real-time quantitative polymerase chain reaction, western blotting, immunohistochemical staining, and luciferase activity assays were performed.
    Results: Stimulation with high levels of glucose significantly enhanced MALAT1 expression in macrophage-derived exosomes. MALAT1 inhibited miR-204-5p expression in macrophage-derived exosomes under hyperglycemic conditions. siRNA-induced silencing of MALAT1 significantly reversed macrophage-derived exosome-induced miR-204-5p expression. Hyperglycemic treatment caused a significant, exosome-induced increase in the expression of the autophagy marker LC3B in macrophages. Silencing MALAT1 and overexpression of miR-204-5p significantly decreased LC3B expression induced by macrophage-derived exosomes. Overexpression of miR-204-5p significantly reduced LC3B luciferase activity induced by macrophage-derived exosomes. Balloon injury to the carotid artery in rats significantly enhanced MALAT1 and LC3B expression, and significantly reduced miR-204-5p expression in carotid artery tissue. Silencing MALAT1 significantly reversed miR-204-5p expression in carotid artery tissue after balloon injury. MALAT1 silencing or miR-204-5p overexpression significantly reduced LC3B expression after balloon injury.
    Conclusion: This study demonstrated that hyperglycemia upregulates MALAT1. MALAT1 suppresses miR-204-5p expression and counteracts the inhibitory effect of miR-204-5p on LC3B expression in macrophages to promote vascular disease.
    Language English
    Publishing date 2024-04-23
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2107283-8
    ISSN 1728-7731 ; 1726-4901
    ISSN (online) 1728-7731
    ISSN 1726-4901
    DOI 10.1097/JCMA.0000000000001098
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Statement of the Chairman of the Publication Committee of Acta Cardiologica Sinica.

    Shyu, Kou-Gi

    Acta Cardiologica Sinica

    2016  Volume 29, Issue 2, Page(s) 113–114

    Language English
    Publishing date 2016-04-28
    Publishing country China (Republic : 1949- )
    Document type Journal Article
    ZDB-ID 1051394-2
    ISSN 1011-6842
    ISSN 1011-6842
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: The Role of Endoglin in Myocardial Fibrosis.

    Shyu, Kou-Gi

    Acta Cardiologica Sinica

    2017  Volume 33, Issue 5, Page(s) 461–467

    Abstract: Myocardial fibrosis is closely associated with heart failure because myocardial fibrosis may cause the loss of normal cardiac function. Endoglin is a homeodimeric membrane glycoprotein, a co-receptor of transforming growth factor-β1 (TGF-β1) and β3. ... ...

    Abstract Myocardial fibrosis is closely associated with heart failure because myocardial fibrosis may cause the loss of normal cardiac function. Endoglin is a homeodimeric membrane glycoprotein, a co-receptor of transforming growth factor-β1 (TGF-β1) and β3. Endoglin is a potent mediator of profibrotic effects of angiotensin II on cardiac fibroblasts and can modulate the effect of TGF-β1 on extracellular matrix synthesis. These data indicate that endoglin plays an important role in fibrogenesis in cardiac remodeling. Endoglin induced by TGF-β1 is largely through PI-3 kinase, Akt, Smad3/4 and endoglin promoter pathways. Endoglin was upregulated in pressure- overload, volume-overload heart failure and acute myocardial infarction and was associated with myocardial fibrosis. Silencing endoglin expression could attenuate myocardial fibrosis and improve survival in animal study. Endoglin expression was increased in failing left ventricle before use of left ventricle assist device, and reduced back to control levels after use of left ventricle assist device. Targeting endoglin may provide a potentially unique and novel therapeutic approach for reducing myocardial fibrosis in patients with heart failure.
    Language English
    Publishing date 2017-08-31
    Publishing country China (Republic : 1949- )
    Document type Journal Article ; Review
    ZDB-ID 1051394-2
    ISSN 1011-6842
    ISSN 1011-6842
    DOI 10.6515/acs20170221b
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Reply to the letter to the Editor "ECs-derived exosomes: A novel therapeutic target for myocardial ischemia-reperfusion injury".

    Shyu, Kou-Gi / Wang, Bao-Wei / Lin, Chiu-Mei

    International journal of cardiology

    2021  Volume 332, Page(s) 39

    MeSH term(s) Exosomes ; Humans ; Hyperbaric Oxygenation ; MicroRNAs ; Myocardial Reperfusion Injury/drug therapy ; RNA, Long Noncoding
    Chemical Substances MicroRNAs ; RNA, Long Noncoding
    Language English
    Publishing date 2021-03-20
    Publishing country Netherlands
    Document type Letter ; Comment
    ZDB-ID 779519-1
    ISSN 1874-1754 ; 0167-5273
    ISSN (online) 1874-1754
    ISSN 0167-5273
    DOI 10.1016/j.ijcard.2021.03.044
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Association of Heart Rate Trajectory Patterns with the Risk of Adverse Outcomes for Acute Heart Failure in a Heart Failure Cohort in Taiwan.

    Wei, Cheng-Chun / Shyu, Kou-Gi / Chien, Kuo-Liong

    Acta Cardiologica Sinica

    2020  Volume 36, Issue 5, Page(s) 439–447

    Abstract: Background: Heart rate trajectory with multiple heart rate measurements is considered to be a more sensitive predictor of outcomes than single heart rate measurements. The association of heart rate trajectory patterns with acute heart failure outcomes ... ...

    Abstract Background: Heart rate trajectory with multiple heart rate measurements is considered to be a more sensitive predictor of outcomes than single heart rate measurements. The association of heart rate trajectory patterns with acute heart failure outcomes has not been well studied. We examined the association of heart rate trajectory patterns with post-discharge outcomes.
    Methods: This prospective cohort study was based on an acute heart failure registry in Taiwan. A total of 1509 patients were enrolled in the Taiwan Society of Cardiology - Heart Failure with Reduced Ejection Fraction Registry from May 2013 to October 2015. The outcomes were post-discharge all-cause mortality and heart failure re-admission.
    Results: Two heart trajectory patterns were identified in group-based trajectory analysis. One started with a higher heart rate and had an increasing trend over 6 months then a subsequent decline (high-increasing-decreasing group; n = 352; 23.9%). The other started with a lower heart rate and had a relatively stable pattern (low-stable group; n = 1121; 76.1%). Compared with those in the low-stable group, patients in the high-increasing-decreasing group had a higher risk of events (all-cause mortality: hazard ratio 3.10 and 95% confidence interval 1.24-7.77; heart failure re-admission: hazard ratio 1.13 and 95% confidence interval 0.55-2.32).
    Conclusions: Patients with a high-increasing-decreasing heart rate trajectory pattern had a higher risk of all-cause mortality than those with a low-stable pattern.
    Language English
    Publishing date 2020-09-14
    Publishing country China (Republic : 1949- )
    Document type Journal Article
    ZDB-ID 1051394-2
    ISSN 1011-6842
    ISSN 1011-6842
    DOI 10.6515/ACS.202009_36(5).20200519A
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Exosomal MALAT1 Derived from High Glucose-Treated Macrophages Up-Regulates Resistin Expression via miR-150-5p Downregulation.

    Shyu, Kou-Gi / Wang, Bao-Wei / Fang, Wei-Jen / Pan, Chun-Ming / Lin, Chiu-Mei

    International journal of molecular sciences

    2022  Volume 23, Issue 3

    Abstract: Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) plays a crucial role in the pathophysiological process associated with diabetes-related complications. The effect of high glucose levels on macrophage-derived exosomal MALAT1 is unknown. ... ...

    Abstract Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) plays a crucial role in the pathophysiological process associated with diabetes-related complications. The effect of high glucose levels on macrophage-derived exosomal MALAT1 is unknown. Therefore, we investigated the molecular regulatory mechanisms controlling exosomal MALAT1 in macrophages under high glucose treatment and the therapeutic target of macrophage-derived exosomal MALAT1 using a balloon injury model of vascular disease in diabetic rats. High glucose (25 mM) significantly increased MALAT1 expression in macrophage-derived exosomes. MALAT1 suppressed miR-150-5p expression in macrophage-derived exosomes under high-glucose conditions. Silencing MALAT1 using MALAT1 siRNA significantly reversed miR-150-5p expression induced by macrophage-derived exosomes. Macrophage-derived exosomes under high-glucose treatment significantly increased resistin expression in macrophages. Silencing MALAT1 and overexpression of miR-150-5p significantly decreased resistin expression induced by macrophage-derived exosomes. Overexpression of miR-150-5p significantly decreased resistin luciferase activity induced by macrophage-derived exosomes. Macrophage-derived exosome significantly decreased glucose uptake in macrophages and silencing MALAT1, resistin or overexpression of miR-150-5p significantly reversed glucose uptake. Balloon injury to the carotid artery significantly increased MALAT1 and resistin expression and significantly decreased miR-150-5p expression in arterial tissue. Silencing MALAT1 significantly reversed miR-150-5p expression in arterial tissue after balloon injury. Silencing MALAT1 or overexpression of miR-150-5p significantly reduced resistin expression after balloon injury. In conclusion, high glucose up-regulates MALAT1 to suppress miR-150-5p expression and counteracts the inhibitory effect of miR-150-5p on resistin expression in macrophages to promote vascular disease. Macrophage-derived exosomes containing MALAT1 may serve as a novel cell-free approach for the treatment of vascular disease in diabetes mellitus.
    MeSH term(s) Animals ; Carotid Artery Diseases/etiology ; Carotid Artery Diseases/metabolism ; Carotid Artery Diseases/pathology ; Diabetes Mellitus, Experimental/complications ; Disease Models, Animal ; Exosomes/genetics ; Exosomes/metabolism ; Gene Expression Regulation ; Glucose/toxicity ; Hyperglycemia/chemically induced ; Hyperglycemia/pathology ; Macrophages/metabolism ; Macrophages/pathology ; Male ; Mice ; MicroRNAs/antagonists & inhibitors ; RNA, Long Noncoding/genetics ; RNA, Long Noncoding/metabolism ; Rats ; Rats, Wistar ; Resistin/genetics ; Resistin/metabolism ; Sweetening Agents/toxicity
    Chemical Substances Malat1 long non-coding RNA, mouse ; MicroRNAs ; Mirn150 microRNA, mouse ; RNA, Long Noncoding ; Resistin ; Sweetening Agents ; Glucose (IY9XDZ35W2)
    Language English
    Publishing date 2022-01-20
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms23031095
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Hyperbaric oxygen activates visfatin expression and angiogenesis via angiotensin II and JNK pathway in hypoxic human coronary artery endothelial cells.

    Chiu, Chiung-Zuan / Wang, Bao-Wei / Yu, Ying-Ju / Shyu, Kou-Gi

    Journal of cellular and molecular medicine

    2020  Volume 24, Issue 4, Page(s) 2434–2443

    Abstract: Visfatin is an adipocytokine with important roles in endothelial angiogenesis. Hyperbaric oxygen (HBO) has been widely used to treat various medical illness with enhanced angiogenesis. The molecular effects of HBO on visfatin under hypoxia are poorly ... ...

    Abstract Visfatin is an adipocytokine with important roles in endothelial angiogenesis. Hyperbaric oxygen (HBO) has been widely used to treat various medical illness with enhanced angiogenesis. The molecular effects of HBO on visfatin under hypoxia are poorly understood. This study aimed to investigate the effect of HBO on visfatin in hypoxic human coronary arterial endothelial cells (HCAECs). HCAECs under chemical hypoxia (antimycin A, 0.01 mmol/L) were exposed to HBO (2.5 atmosphere absolute; ATA) for 2-4 hours. Western blot, real-time polymerase chain reaction, electrophoretic mobility shift assay, luciferase promoter activity, migration and tube formation assay, and in vitro glucose uptake were measured. Visfatin protein expression increased in hypoxic HCAECs with earlier angiotensin II (AngII) secretion and c-Jun N-terminal kinase (JNK) phosphorylation, which could be effectively suppressed by the JNK inhibitor (SP600125), AngII antibody or AngII receptor blocker (losartan). In hypoxic HCAECs, HBO further induced earlier expression of visfatin and AngII. Hypoxia significantly increased DNA-protein binding activity of hypoxia-inducible factor-1α (HIF-1α) and visfatin. Hypoxia, hypoxia with HBO and exogenous addition of AngII also increased promoter transcription to visfatin; SP600125 and losartan blocked this activity. In HCAECs, glucose uptake, migration and tube formation were increased in the presence of hypoxia with HBO, but were inhibited by visfatin small interfering RNA, SP600125 and losartan. In conclusion, HBO activates visfatin expression and angiogenesis in hypoxic HCAECs, an effect mediated by AngII, mainly through the JNK pathway.
    MeSH term(s) Angiotensin II/metabolism ; Anthracenes/pharmacology ; Cell Movement/drug effects ; Cell Movement/genetics ; Cells, Cultured ; Coronary Vessels/drug effects ; Coronary Vessels/metabolism ; Cytokines/metabolism ; Endothelial Cells/drug effects ; Endothelial Cells/metabolism ; Glucose/metabolism ; Humans ; Hyperbaric Oxygenation/methods ; Hypoxia/metabolism ; Hypoxia-Inducible Factor 1, alpha Subunit/metabolism ; JNK Mitogen-Activated Protein Kinases/metabolism ; Losartan/pharmacology ; Neovascularization, Pathologic/metabolism ; Nicotinamide Phosphoribosyltransferase/metabolism ; Oxygen/metabolism ; Promoter Regions, Genetic/drug effects ; Promoter Regions, Genetic/genetics ; RNA, Small Interfering/genetics ; Signal Transduction/drug effects ; Signal Transduction/physiology
    Chemical Substances Anthracenes ; Cytokines ; Hypoxia-Inducible Factor 1, alpha Subunit ; RNA, Small Interfering ; Angiotensin II (11128-99-7) ; pyrazolanthrone (1TW30Y2766) ; Nicotinamide Phosphoribosyltransferase (EC 2.4.2.12) ; nicotinamide phosphoribosyltransferase, human (EC 2.4.2.12) ; JNK Mitogen-Activated Protein Kinases (EC 2.7.11.24) ; Glucose (IY9XDZ35W2) ; Losartan (JMS50MPO89) ; Oxygen (S88TT14065)
    Language English
    Publishing date 2020-01-19
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2074559-X
    ISSN 1582-4934 ; 1582-4934 ; 1582-1838
    ISSN (online) 1582-4934
    ISSN 1582-4934 ; 1582-1838
    DOI 10.1111/jcmm.14926
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Exosomal MALAT1 Derived from High Glucose-Treated Macrophages Up-Regulates Resistin Expression via miR-150-5p Downregulation

    Kou-Gi Shyu / Bao-Wei Wang / Wei-Jen Fang / Chun-Ming Pan / Chiu-Mei Lin

    International Journal of Molecular Sciences, Vol 23, Iss 1095, p

    2022  Volume 1095

    Abstract: Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) plays a crucial role in the pathophysiological process associated with diabetes-related complications. The effect of high glucose levels on macrophage-derived exosomal MALAT1 is unknown. ... ...

    Abstract Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) plays a crucial role in the pathophysiological process associated with diabetes-related complications. The effect of high glucose levels on macrophage-derived exosomal MALAT1 is unknown. Therefore, we investigated the molecular regulatory mechanisms controlling exosomal MALAT1 in macrophages under high glucose treatment and the therapeutic target of macrophage-derived exosomal MALAT1 using a balloon injury model of vascular disease in diabetic rats. High glucose (25 mM) significantly increased MALAT1 expression in macrophage-derived exosomes. MALAT1 suppressed miR-150-5p expression in macrophage-derived exosomes under high-glucose conditions. Silencing MALAT1 using MALAT1 siRNA significantly reversed miR-150-5p expression induced by macrophage-derived exosomes. Macrophage-derived exosomes under high-glucose treatment significantly increased resistin expression in macrophages. Silencing MALAT1 and overexpression of miR-150-5p significantly decreased resistin expression induced by macrophage-derived exosomes. Overexpression of miR-150-5p significantly decreased resistin luciferase activity induced by macrophage-derived exosomes. Macrophage-derived exosome significantly decreased glucose uptake in macrophages and silencing MALAT1, resistin or overexpression of miR-150-5p significantly reversed glucose uptake. Balloon injury to the carotid artery significantly increased MALAT1 and resistin expression and significantly decreased miR-150-5p expression in arterial tissue. Silencing MALAT1 significantly reversed miR-150-5p expression in arterial tissue after balloon injury. Silencing MALAT1 or overexpression of miR-150-5p significantly reduced resistin expression after balloon injury. In conclusion, high glucose up-regulates MALAT1 to suppress miR-150-5p expression and counteracts the inhibitory effect of miR-150-5p on resistin expression in macrophages to promote vascular disease. Macrophage-derived exosomes containing MALAT1 may serve as a novel cell-free approach for the treatment of vascular disease in diabetes mellitus.
    Keywords high glucose ; macrophage ; MALAT1 ; exosome ; miR-1505p ; resistin ; Biology (General) ; QH301-705.5 ; Chemistry ; QD1-999
    Language English
    Publishing date 2022-01-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article ; Online: Enhancement of bicycle exercise capacity in patients with chronotropic incompetence through closed-loop stimulation: a randomized crossover trial.

    Chua, Su-Kiat / Chen, Wen-Ling / Chen, Lung-Ching / Shyu, Kou-Gi / Hung, Huei-Fong / Lee, Shih-Huang / Wang, Tzu-Lin / Lai, Wei-Ting / Chen, Kuan-Jen / Liao, Zhen-Yu / Chuang, Cheng-Yen / Chou, Ching-Yao

    Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology

    2023  Volume 25, Issue 12

    Abstract: Aims: This study aimed to investigate the effectiveness of closed-loop stimulation (CLS) pacing compared with the traditional DDD mode in patients with chronotropic incompetence (CI) using bicycle-based cardiopulmonary exercise testing (CPET).: ... ...

    Abstract Aims: This study aimed to investigate the effectiveness of closed-loop stimulation (CLS) pacing compared with the traditional DDD mode in patients with chronotropic incompetence (CI) using bicycle-based cardiopulmonary exercise testing (CPET).
    Methods and results: This single-centre, randomized crossover trial involved 40 patients with CI. Patients were randomized to receive either DDD-CLS or DDD mode pacing for 2 months, followed by a crossover to the alternative mode for an additional 2 months. Bicycling-based CPET was conducted at the 3- and 5-month follow-up visits to assess exercise capacity. Other cardiopulmonary exercise outcome measures and health-related quality of life (QoL) were also assessed. DDD-CLS mode pacing significantly improved exercise capacity, resulting in a peak oxygen uptake (14.8 ± 4.0 vs. 12.0 ± 3.6 mL/kg/min, P < 0.001) and oxygen uptake at the ventilatory threshold (10.0 ± 2.2 vs. 8.7 ± 1.8 mL/kg/min, P < 0.001) higher than those of the DDD mode. However, there were no significant differences in other cardiopulmonary exercise outcome measures such as ventilatory efficiency of carbon dioxide production slope, oxygen uptake efficiency slope, and end-tidal carbon dioxide between the two modes. Patients in the DDD-CLS group reported a better QoL, and 97.5% expressed a preference for the DDD-CLS mode.
    Conclusion: DDD-CLS mode pacing demonstrated improved exercise capacity and QoL in patients with CI, highlighting its potential as an effective pacing strategy for this patient population.
    MeSH term(s) Humans ; Quality of Life ; Cardiac Pacing, Artificial/methods ; Carbon Dioxide ; Bicycling ; Exercise Tolerance ; Cross-Over Studies ; Exercise Test ; Oxygen ; Heart Rate/physiology
    Chemical Substances Carbon Dioxide (142M471B3J) ; Oxygen (S88TT14065)
    Language English
    Publishing date 2023-11-21
    Publishing country England
    Document type Randomized Controlled Trial ; Journal Article
    ZDB-ID 1449879-0
    ISSN 1532-2092 ; 1099-5129
    ISSN (online) 1532-2092
    ISSN 1099-5129
    DOI 10.1093/europace/euad358
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