87 results on '"Yuan-Yen Chang"'
Search Results
2. An integrated analysis of dysregulated SCD1 in human cancers and functional verification of miR-181a-5p/SCD1 axis in esophageal squamous cell carcinoma
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Bing-Yen Wang, Yuan-Yen Chang, Li-Yen Shiu, Yi-Ju Lee, Yu-Wei Lin, Yu-Shen Hsu, Hsin-Ting Tsai, Sung-Po Hsu, Li-Jen Su, Meng-Hsiu Tsai, Jing-Hong Xiao, Jer-An Lin, and Chang-Han Chen
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Stearoyl-CoA desaturase ,ESCC ,MiR-181a-5p ,Biotechnology ,TP248.13-248.65 - Abstract
Esophageal squamous cell carcinoma (ESCC), one of the most lethal cancers, has become a global health issue. Stearoyl-coA desaturase 1 (SCD1) has been demonstrated to play a crucial role in human cancers. However, pan-cancer analysis has revealed little evidence to date. In the current study, we systematically inspected the expression patterns and potential clinical outcomes of SCD1 in multiple human cancers. SCD1 was dysregulated in several types of cancers, and its aberrant expression acted as a diagnostic biomarker, indicating that SCD1 may play a role in tumorigenesis. We used ESCC as an example to demonstrate that SCD1 was dramatically upregulated in tumor tissues of ESCC and was associated with clinicopathological characteristics in ESCC patients. Furthermore, Kaplan-Meier analysis showed that high SCD1 expression was correlated with poor progression-free survival (PFS) and disease-free survival (DFS) in ESCC patients. The protein-protein interaction (PPI) network and module analysis by PINA database and Gephi were performed to identify the hub targets. Meanwhile, the functional annotation analysis of these hubs was constructed by Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses. Functionally, the gain-of-function of SCD1 in ESCC cells promoted cell proliferation, migration, and invasion; in contrast, loss-of-function of SCD1 in ESCC cells had opposite effects. Bioinformatic, QPCR, Western blotting and luciferase assays indicated that SCD1 was a direct target of miR-181a-5p in ESCC cells. In addition, gain-of-function of miR-181a-5p in ESCC cells reduced the cell growth, migratory, and invasive abilities. Conversely, inhibition of miR-181a-5p expression by its inhibitor in ESCC cells had opposite biological effects. Importantly, reinforced SCD1 in miR-181a-5p mimic ESCC transfectants reversed miR-181a-5p mimic-prevented malignant phenotypes of ESCC cells. Taken together, these results indicate that SCD1 expression influences tumor progression in a variety of cancers, and the miR-181a-5p/SCD1 axis may be a potential therapeutic target for ESCC treatment.
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- 2023
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3. Luteolin attenuates PM2.5-induced inflammatory responses by augmenting HO-1 and JAK-STAT expression in murine alveolar macrophages
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Wen-Che Hsieh, Chane-Yu Lai, Hui-Wen Lin, Dom-Gene Tu, Ting-Jing Shen, Yi-Ju Lee, Ming-Chang Hsieh, Ching-Chung Chen, Hsin-Hsuan Han, and Yuan-Yen Chang
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ambient fine particulate matter (pm2.5) ,murine alveolar macrophages ,luteolin ,inflammatory response ,jak/stat/nf-κb ,ho-1 ,Agriculture (General) ,S1-972 ,Immunologic diseases. Allergy ,RC581-607 - Abstract
To explore the involved mechanisms and possible treatments of ambient PM2.5 exposure-induced lung inflammation, this work studied the activity of luteolin, a natural flavonoid which widely presents in many plant species, in murine alveolar macrophage MH S cells exposed to PM2.5. Results showed PM2.5 induced an inflammatory response, as evidenced by significantly increased TNF-α, IL-6, MCP-1 and Rantes levels. and induced iNOS, COX-2, and NF-κB protein expressions in MH-S cells. Moreover, luteolin pre-treatment reduced JAK2 and STAT1 but not STAT3 protein expressions in PM2.5-stimulated MH-S cells. Performing JAK2 inhibitor AG490 further showed reduced TNF-α and IL-6 productions as well as iNOS, COX-2, and NF-κB protein expressions. In addition, although PM2.5 exposure could elevate HO-1 expression basically, luteolin pre-treatment and AG490 administration further significantly enhanced HO-1 expression additionally. Collectively, these results revealed that luteolin inhibits inflammation through suppressing JAK2/STAT1/NF-κB pathway and enhancing HO-1 expression in PM2.5-challenged alveolar macrophage MH-S cells.
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- 2022
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4. The Establishment of a Noninvasive Bioluminescence-Specific Viral Encephalitis Model by Pseudorabies Virus-Infected NF-κBp-Luciferase Mice
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Hui-Wen Lin, Meilin Wang, Pei-Jane Tsai, Yi-Ju Lee, Ming-Chang Hsieh, Dah-Yuu Lu, Wei-Li Hsu, Ming-Shiou Jan, and Yuan-Yen Chang
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pseudorabies virus (PRV) ,nuclear factor-kappa B promoter (NF-κBp)-luciferase mice ,proinflammatory mediators ,Veterinary medicine ,SF600-1100 - Abstract
Encephalitis is a rare brain inflammation that is most commonly caused by a viral infection. In this study, we first use an in vivo imaging system (IVIS) to determine whether NF-κBp-luciferase expression could be detected in the brain of pseudorabies virus (PRV)-infected NF-κBp-luciferase mice and to evaluate proinflammatory mediators in a well-described mouse model of PRV encephalitis. In in vitro studies, we used murine microglia (BV-2) cells to demonstrate the PRV-induced encephalitis model entailing the activation of microglia cells. The results indicate that PRV-induced neuroinflammation responses through the induction of IL-6, TNF-α, COX-2, and iNOS expression occurred via the regulation of NF-κB expression in BV-2 cells. In in vivo studies, compared with MOCK controls, the mice infected with neurovirulent PRV exhibited significantly elevated NF-κB transcription factor activity and luciferase protein expression only in the brain by IVIS. Mild focal necrosis was also observed in the brain. Further examination revealed biomarkers of inflammation, including inducible cyclooxygenase (COX)-2, inducible nitric oxide synthase (iNOS), and tumor necrosis factor (TNF)-α and interleukin (IL)-6, both of which constituted proinflammatory cytokines. PRV infection stimulated inflammation and COX-2 and iNOS expression of IL-6 and TNF-α. The presented results herein suggest that PRV induces iNOS and COX-2 expression in the brain of NF-κBp–luciferase mice via NF-κB activation. In conclusion, we used NF-κBp-luciferase mice to establish a specific virus-induced encephalitis model via PRV intranasal infection. In the future, this in vivo model will provide potential targets for the development of new therapeutic strategies focusing on NF-κB inflammatory biomarkers and the development of drugs for viral inflammatory diseases.
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- 2022
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5. Protective effect and mechanism of Muntingia calabura Linn. fruit ethanolic extract against vascular endothelial growth factor production in nickel-stimulated hepatocellular carcinoma cells
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Jau-Tien Lin, Yuan-Yen Chang, Yi-Chen Chen, Li-Chun Kuo, and Deng-Jye Yang
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Nickel (Ni) ,Muntingia calabura Linn. ,Hepatocellular carcinoma cell ,Vascular endothelial growth factor (VEGF) ,Hypoxia-inducible factor (HIF)-1α ,Nutrition. Foods and food supply ,TX341-641 - Abstract
The protective effect of the M. calabura Linn. fruit ethanolic extract (MFEE) against nickel (Ni)-induced vascular endothelial growth factor (VEGF) expression in hepatocellular carcinoma (HepG2) cells was investigated. MFEE contained 4 flavonoids: epicatechin, rutin, diosmin and luteolin, and 11 phenolic acids: gallic acid, gentisic acid, p-hydroxybenzoic acid, vanillic acid, p-coumaric acid, ferulic acid, sinapic acid, syringic acid, p-anisic acid and rosmarinic acid. Substantial VEGF expression was assayed in Ni-stimulated HepG2 cells, which was significantly suppressed through MFEE treatment via down-regulating Raf-1 proto-oncogene, serine/threonine kinase (RAF1) /mitogen-activated protein kinase 1/2 (MEK1/2)/extracellular-signal-regulated kinase 1/2 (ERK1/2), and Janus kinase 2 (JAK2)/signal transducers and activators of transcription 3 (STAT3) pathways as well as inhibiting hypoxia-inducible factor (HIF)-1α expression down-regulated by phosphatidylinositol-3-kinase (PI3K)/ protein kinase B (AKT)/mammalian target of rapamycin (mTOR) pathway. The results showed that MFEE should have the potential to lower liver cancer risk in the Ni-polluted environment by suppressing VEGF expression.
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- 2018
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6. The Protective Effects of α-Mangostin Attenuate Sodium Iodate-Induced Cytotoxicity and Oxidative Injury via Mediating SIRT-3 Inactivation via the PI3K/AKT/PGC-1α Pathway
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Chen-Ju Chuang, Meilin Wang, Jui-Hsuan Yeh, Tzu-Chun Chen, Shang-Chun Tsou, Yi-Ju Lee, Yuan-Yen Chang, and Hui-Wen Lin
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age-related macular degeneration (AMD) ,oxidative stress ,retinal pigment epithelial (RPE) ,alpha-mangostin (α-MG) ,antiapoptotic ,antioxidant ,Therapeutics. Pharmacology ,RM1-950 - Abstract
It is well known that age-related macular degeneration (AMD) is an irreversible neurodegenerative disease that can cause blindness in the elderly. Oxidative stress-induced retinal pigment epithelial (RPE) cell damage is a part of the pathogenesis of AMD. In this study, we evaluated the protective effect and mechanisms of alpha-mangostin (α-mangostin, α-MG) against NaIO3-induced reactive oxygen species (ROS)-dependent toxicity, which activates apoptosis in vivo and in vitro. MTT assay and flow cytometry demonstrated that the pretreatment of ARPE-19 cells with α-MG (0, 3.75, 7.5, and 15 μM) significantly increased cell viability and reduced apoptosis from NaIO3-induced oxidative stress in a concentration-dependent manner, which was achieved by the inhibition of Bax, cleaved PARP-1, cleaved caspase-3 protein expression, and enhancement of Bcl-2 protein. Furthermore, pre-incubation of ARPE-19 cells with α-MG markedly inhibited the intracellular ROS and extracellular H2O2 generation via blocking of the abnormal enzyme activities of superoxide dismutase (SOD), the downregulated levels of catalase (CAT), and the endogenous antioxidant, glutathione (GSH), which were regulated by decreasing PI3K-AKT-PGC-1α-STRT-3 signaling in ARPE-19 cells. In addition, our in vivo results indicated that α-MG improved retinal deformation and increased the thickness of both the outer nuclear layer and inner nuclear layer by inhibiting the expression of cleaved caspase-3 protein. Taken together, our results suggest that α-MG effectively protects human ARPE-19 cells from NaIO3-induced oxidative damage via antiapoptotic and antioxidant effects.
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- 2021
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7. Quercetin Alleviates the Accumulation of Superoxide in Sodium Iodate-Induced Retinal Autophagy by Regulating Mitochondrial Reactive Oxygen Species Homeostasis through Enhanced Deacetyl-SOD2 via the Nrf2-PGC-1α-Sirt1 Pathway
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Min-Yen Hsu, Yai-Ping Hsiao, Yu-Ta Lin, Connie Chen, Chee-Ming Lee, Wen-Chieh Liao, Shang-Chun Tsou, Hui-Wen Lin, and Yuan-Yen Chang
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age-related macular degeneration ,sodium iodate ,retinal pigment epithelium ,quercetin ,oxidative stress ,autophagy ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Oxidative damage of retinal pigment epithelium (RPE) cells plays an important role in the pathogenesis of blindness-related diseases, such as age-related macular degeneration (AMD). Quercetin, a bioactive flavonoid compound, has been shown to have a protective effect against oxidative stress-induced cell apoptosis and inflammation in RPE cells; however, the detailed mechanism underlying this protective effect is unclear. Therefore, the aim of this study was to investigate the regulatory mechanism of quercetin in a sodium iodate (NaIO3)-induced retinal damage. The clinical features of the mice, the production of oxidative stress, and the activity of autophagy and mitochondrial biogenesis were examined. In the mouse model, NaIO3 treatment caused changes in the retinal structure and reduced pupil constriction, and quercetin treatment reversed the oxidative stress-related pathology by decreasing the level of superoxide dismutase 2 (SOD2) while enhancing the serum levels of catalase and glutathione. The increased level of reactive oxygen species in the NaIO3-treated ARPE19 cells was improved by treatment with quercetin, accompanied by a reduction in autophagy and mitochondrial biogenesis. Our findings indicated that the effects of quercetin on regulating the generation of mtROS were dependent on increased levels of deacetyl-SOD2 through the Nrf2-PGC-1α-Sirt1 signaling pathway. These results demonstrated that quercetin may have potential therapeutic efficacy for the treatment of AMD through the regulation of mtROS homeostasis.
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- 2021
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8. Protective Effect of Quercetin on Sodium Iodate-Induced Retinal Apoptosis through the Reactive Oxygen Species-Mediated Mitochondrion-Dependent Pathway
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Yuan-Yen Chang, Yi-Ju Lee, Min-Yen Hsu, Meilin Wang, Shang-Chun Tsou, Ching-Chung Chen, Jer-An Lin, Yai-Ping Hsiao, and Hui-Wen Lin
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age-related macular degeneration ,sodium iodate ,human retinal pigment epithelium ,quercetin ,apoptosis ,mitochondrial membrane potential ,Biology (General) ,QH301-705.5 ,Chemistry ,QD1-999 - Abstract
Age-related macular degeneration (AMD) leads to gradual central vision loss and is the third leading cause of irreversible blindness worldwide. The underlying mechanisms for this progressive neurodegenerative disease remain unclear and there is currently no preventive treatment for dry AMD. Sodium iodate (NaIO3) has been reported to induce AMD-like retinal pathology in mice. We established a mouse model for AMD to evaluate the effects of quercetin on NaIO3-induced retinal apoptosis, and to investigate the pertinent underlying mechanisms. Our in vitro results indicated that quercetin protected human retinal pigment epithelium (ARPE-19) cells from NaIO3-induced apoptosis by inhibiting reactive oxygen species production and loss of mitochondrial membrane potential as detected by Annexin V-FITC/PI flow cytometry. We also evaluated the relative expression of proteins in the apoptosis pathway. Quercetin downregulated the protein expressions of Bax, cleaved caspase-3, and cleaved PARP and upregulated the expression of Bcl-2 through reduced PI3K and pAKT expressions. Furthermore, our in vivo results indicated that quercetin improved retinal deformation and increased the thickness of both the outer nuclear layer and inner nuclear layer, whereas the expression of caspase-3 was inhibited. Taken together, these results demonstrate that quercetin could protect retinal pigment epithelium and the retina from NaIO3-induced cell apoptosis via reactive oxygen species-mediated mitochondrial dysfunction, involving the PI3K/AKT signaling pathway. This suggests that quercetin has the potential to prevent and delay AMD and other retinal diseases involving NaIO3-mediated apoptosis.
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- 2021
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9. Induction of apoptotic death of human hepatocellular carcinoma (HepG2) cells by ethanolic extract from litchi (Litchi chinensis Sonn.) flower
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Jau-Tien Lin, Yuan-Yen Chang, Yi-Chen Chen, Chao-Chin Hu, Yu-Pei Chang, Shih-Han Hsu, and Deng-Jye Yang
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Litchi (Litchi chinensis Sonn.) flower ,Apoptosis ,Hep G2 cell ,Caspase ,Bcl-2 family proteins ,PI3K/Akt ,Nutrition. Foods and food supply ,TX341-641 - Abstract
The cytotoxic activity of litchi (Litchi chinensis Sonn.) flower ethanolic extract (LFEE) against A549 (human lung adenocarcinoma), KB (human nasopharyngeal carcinoma), MCF-7 (human breast adenocarcinoma) and HepG2 (human hepatocellular carcinoma) cells was evaluated. LFEE exhibited better anti-proliferative action against HepG2 cells, which induced G2/M phase arrest and apoptosis in HepG2 cells. HepG2 cells treated with LFEE (0.3 mg/mL) enhanced expressions of p53, tBid, Bad and Bax, along with decreased expressions of Bcl-2 and Bcl-xL, and induced the release of cytochrome c from mitochondria to cytosol. That also accompanied by activation of caspases-3, -8 and -9 and cleavage of poly (adenosine diphosphate (ADP)-ribose) polymerase (PARP); furthermore, down-regulations of phosphoinositide 3 kinase (PI3K), Akt, Akt phosphorylation and Bad phosphorylation could also be observed. Five flavonoids (total amount, 101.07 mg/g dried extract (g DE)), nine phenolic acids (total amount, 55.07 mg/ g DE) and proanthocyanidin A2 (81.20 mg/ g DE) could be determined in LFEE.
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- 2015
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10. L-carnitine ameliorates dyslipidemic and hepatic disorders induced by a high-fat diet via regulating lipid metabolism, self-antioxidant capacity, and inflammatory response
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Chang-Chao Su, Chaung-Sung Chang, Chung-Hsi Chou, Yi-Hsieng Samuel Wu, Kuo-Tai Yang, Jung-Kai Tseng, Yuan-Yen Chang, and Yi-Chen Chen
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Antioxidant effect ,High-fat diet ,L-carnitine ,Lipid homeostasis ,Non-alcoholic fatty liver disease ,Serum lipid ,Nutrition. Foods and food supply ,TX341-641 - Abstract
The cardiovascular and liver protection of carnitine (CNT) in a high-fat diet was investigated. Male C57BL/6 mice were divided randomly into four groups: 1) CON: Control, 2) HFD: high-fat diet, 3) CNTL: HFD + 500 mg CNT/kg BW, and 4) CNTH: HFD + 1500 mg CNT/kg BW. After a 25-week experimental period, CNT supplementation reduced (p
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- 2015
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11. Rheumatoid arthritis is associated with rs17337023 polymorphism and increased serum level of the EGFR protein.
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Chung-Ming Huang, Hsin-Han Chen, Da-Chung Chen, Yu-Chuen Huang, Shih-Ping Liu, Ying-Ju Lin, Yuan-Yen Chang, Hui-Wen Lin, Shih-Yin Chen, and Fuu-Jen Tsai
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Medicine ,Science - Abstract
We have previously described the association of rheumatoid arthritis (RA) prevalence and two epidermal growth factor receptor (EGFR) SNPs (rs17337023 and rs2227983) among the Taiwanese population. This present study aimed to elucidate whether the SNPs can alter the expression of EGFR in the progression of RA.The cohort study included 366 Taiwan's Han Chinese RA patients and 326 age and gender matched healthy controls. Blood samples collected from the participants were analyzed to determine their serum EGFR levels and to identify EGFR SNPs from their genomic DNA. Genotyping for EGFR SNPs was performed by restriction fragment length polymorphism (RFLP) assay. The relationship between EGFR SNP and the clinical manifestations of RA was evaluated.Our results showed that a statistically significant difference in genotype frequency distributions at rs17337023 SNP for RA patients and controls (p ˂ 0.05). In addition, compared with the haplotype frequencies between case and control groups, the RA patient with the GT haplotype appeared to be a significant "protective" haplotype compared with other haplotypes (OR: 0.73, 95% CI: 0.59-0.91; p = 0.005). Furthermore, the increased serum level of EGFR was also observed in RA patients (p ˂ 0.001).Our study showed that RA is associated with rs17337023 SNP in EGFR gene and increased serum level of the EGFR protein. These findings suggest EGFR is worthy of further investigation as a therapeutic target for RA.
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- 2017
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12. Suppressive effect of carotenoid extract of Dunaliella salina alga on production of LPS-stimulated pro-inflammatory mediators in RAW264.7 cells via NF-κB and JNK inactivation
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Deng-Jye Yang, Jau-Tien Lin, Yi-Chen Chen, Shih-Chuan Liu, Fung-Jou Lu, Tien-Jye Chang, Meilin Wang, Hui-Wen Lin, and Yuan-Yen Chang
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Caroteinoid ,Dunaliella salina ,Pro-inflammatory mediator ,NF-κB ,JNK ,Nutrition. Foods and food supply ,TX341-641 - Abstract
The carotenoid extract from Dunaliella salina was used to evaluate the suppressive effects on lipopolysaccharide (LPS)-induced pro-inflammatory mediators in RAW264.7 cells. The extract composed all-trans forms of α-carotene (28.8 mg/g extract), β-carotene (471.1 mg/g extract), lutein (7.1 mg/g extract) and zeaxanthin (7.2 mg/g extract), 13- or 13′-cis-β-carotene (12.1 mg/g extract), 9- or 9′-cis-α-carotene (19.1 mg/g extract) and 9- or 9′-cis-β-carotene (440.3 mg/g extract) dose-dependently reduced the production of interleukin (IL)-1β, IL-6 and tumor necrosis factor-α (TNF-α), the protein expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2), and the secretion of nitric oxide (NO) and prostaglandin E2 (PGE2) in LPS-activated RAW264.7 cells. Its attenuation of LPS-induced inflammatory responses was closely related to inhibition of the nuclear NF-κB p50 subunit translocation by blocking inhibitor of κBα (IκB) phosphorylation and degradation correlated with suppressing IκB kinase (IKK) α/β phosphorylation, as well as down-regulation of the c-Jun NH2-terminal kinase (JNK) activation.
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- 2013
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13. Antioxidative and anti-inflammatory effects of polyphenol-rich litchi (Litchi chinensis Sonn.)-flower-water-extract on livers of high-fat-diet fed hamsters
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Yuan-Yen Chang, Deng-Jye Yang, Chih-Hsien Chiu, Yi-Ling Lin, Jr-Wei Chen, and Yi-Chen Chen
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Antioxidative capacity ,Hepatic lipids ,Litchi-flower-water-extract ,Liver cytokine level ,Liver damage index ,Matrix metalloproteinase ,Nutrition. Foods and food supply ,TX341-641 - Abstract
Gentisic acid and epicatechin are two major compounds in phenolic acids and flavonoids of litchi-flower-water extracts (LFWEs), respectively. Increased (p
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- 2013
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14. Automatic slice selection and diagnosis of breast ultrasound image using deep learning.
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Yan-Wei Lee, Ming-Yang Wang, Hua-Yan Chen, Yuan-Yen Chang, Chiun-Sheng Huang, and Ruey-Feng Chang
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- 2024
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15. Particulate matter 2.5 exposure induces epithelial-mesenchymal transition via PI3K/AKT/mTOR pathway in human retinal pigment epithelial ARPE-19 cells
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Hui-Wen Lin, Ting-Jing Shen, Peng-Yu Chen, Tzu-Chun Chen, Jui-Hsuan Yeh, Shang-Chun Tsou, Chane-Yu Lai, Chang-Han Chen, and Yuan-Yen Chang
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Epithelial-Mesenchymal Transition ,TOR Serine-Threonine Kinases ,Biophysics ,Epithelial Cells ,Cell Biology ,Biochemistry ,Phosphatidylinositol 3-Kinases ,Humans ,Particulate Matter ,Proto-Oncogene Proteins c-akt ,Retinal Pigments ,Molecular Biology ,Phosphoinositide-3 Kinase Inhibitors ,Signal Transduction - Abstract
Exposure to particulate matter 2.5 (PM2.5) has been linked to ocular surface diseases, yet knowledge of the molecular mechanism impacted on retina pathogenesis is limited. Therefore, the purpose of this study was to explore the effects and involved factors of PM2.5 exposure in human retinal pigment epithelial APRE-19 cells. Our data revealed a decreased cell viability and an increased migratory ability in APRE-19 cells after PM2.5 stimulation. The MMP-2 and MMP-9 protein levels were markedly increased while the MMPs regulators TIMP-1 and TIMP-2 were significantly reduced in PM2.5-exposed APRE-19 cells. PM2.5 also increased pro-MMP-2 expression in the cell culture supernatants. Additionally, PM2.5 promoted the EMT markers through the activation of PI3K/AKT/mTOR pathway. Moreover, the ICAM-1 production was also remarkably increased by PM2.5 but reduced by PI3K/AKT inhibitor LY294002 in APRE-19 cells. Taken together, these results suggest that PM2.5 promotes EMT in a PI3K/AKT/mTOR-dependent manner in the retinal pigment epithelium.
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- 2022
16. Luteolin Reduces Aqueous Extract PM2.5-induced Metastatic Activity in H460 Lung Cancer Cells
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Hui-Wen, Lin, Ting-Jing, Shen, Nae-Cherng, Yang, Meilin, Wang, Wen-Che, Hsieh, Chen-Ju, Chuang, Chane-Yu, Lai, and Yuan-Yen, Chang
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ErbB Receptors ,Phosphatidylinositol 3-Kinases ,Lung Neoplasms ,Matrix Metalloproteinase 9 ,Cell Line, Tumor ,Humans ,Matrix Metalloproteinase 2 ,Particulate Matter ,General Medicine ,Phosphatidylinositol 3-Kinase ,Intercellular Adhesion Molecule-1 ,Luteolin ,Proto-Oncogene Proteins c-akt - Abstract
Fine particulate matter (PM2.5) is the critical cause of lung cancer and can further promote tumor cell migration and invasion. This study investigated the effects of luteolin, an antiangiogenic flavonoid agent, on blocking aqueous extract PM2.5-prompted cancer progression. We observed that luteolin reduced cell migration and the expression of pro-metastatic factors pro-matrix metalloproteinase (MMP)-2 and intercellular adhesion molecule (ICAM)-1 in PM2.5-exposed H460 lung cancer cells. Luteolin treatment also reduced the transduction of PM2.5-induced epidermal growth factor receptor (EGFR)-phosphatidylinositol 3-kinase (PI3K)-protein kinase B (AKT) cascade signaling. Furthermore, the reduction of MMP-2 expression and ICAM-1 production by luteolin in PM2.5-stimulated H460 cells is EGFR-PI3K-AKT pathway dependent. These results suggest that luteolin exhibits antitumor progression by inhibiting EGFR-PI3K-AKT pathway.
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- 2022
17. Deep learning-based endoscopic anatomy classification: an accelerated approach for data preparation and model validation
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Pai-Chi Li, Chih-Da Yao, Chang Ruey-Feng, Yuan-Yen Chang, Yang-Yuan Chen, Wen-Yen Chang, and Hsu-Heng Yen
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medicine.diagnostic_test ,business.industry ,Esophagogastroduodenoscopy ,Deep learning ,Pattern recognition ,Endoscopic anatomy ,Convolutional neural network ,Endoscopy, Gastrointestinal ,Data preparation ,Model validation ,Endoscopy ,Multiclass classification ,Deep Learning ,Artificial Intelligence ,Humans ,Medicine ,Surgery ,Neural Networks, Computer ,Artificial intelligence ,business ,Retrospective Studies - Abstract
Photodocumentation during endoscopy procedures is one of the indicators for endoscopy performance quality; however, this indicator is difficult to measure and audit in the endoscopy unit. Emerging artificial intelligence technology may solve this problem, which requires a large amount of material for model development. We developed a deep learning-based endoscopic anatomy classification system through convolutional neural networks with an accelerated data preparation approach. We retrospectively collected 8,041 images from esophagogastroduodenoscopy (EGD) procedures and labeled them using two experts for nine anatomical locations of the upper gastrointestinal tract. A base model for EGD image multiclass classification was first developed, and an additional 6,091 images were enrolled and classified by the base model. A total of 5,963 images were manually confirmed and added to develop the subsequent enhanced model. Additional internal and external endoscopy image datasets were used to test the model performance. The base model achieved total accuracy of 96.29%. For the enhanced model, the total accuracy was 96.64%. The overall accuracy improved with the enhanced model compared with the base model for the internal test dataset without narrowband images (93.05% vs. 91.25%, p
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- 2021
18. Anti-inflammatory effects of Flos Lonicerae Japonicae Water Extract are regulated by the STAT/NF-κB pathway and HO-1 expression in Virus-infected RAW264.7 cells
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Yi-Ju Lee, Ching Chung Chen, Yuan Yen Chang, Wei-Li Hsu, Ming Chang Hsieh, Cheng Wei Liu, Deng Jye Yang, and Hui Wen Lin
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biology ,Inflammation ,NF-κB ,General Medicine ,Molecular biology ,Proinflammatory cytokine ,Nitric oxide synthase ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,chemistry ,medicine ,biology.protein ,STAT protein ,030211 gastroenterology & hepatology ,STAT1 ,medicine.symptom ,STAT3 ,Luteolin - Abstract
This study examined the effect of the Flos Lonicerae Japonicae water extract (FLJWE), chlorogenic acid, and luteolin on pseudorabies virus (PRV)-induced inflammation in RAW264.7 cells and elucidated related molecular mechanisms. The results revealed that FLJWE and luteolin, but not chlorogenic acid, inhibited the production of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), and inflammatory cytokines in PRV-infected RAW 264.7 cells. We found that the FLJWE and luteolin suppressed nuclear factor (NF)-κB activation by inhibiting the phosphorylation of signal transducer and activator of transcription 1 and 3 (STAT1 and STAT3, respectively). Moreover, the FLJWE significantly upregulated the expression of pNrf2 and its downstream target gene heme oxygenase-1 (HO-1). Our data indicated that FLJWE and luteolin reduced the expression of proinflammatory mediators and inflammatory cytokines, such as COX-2 and iNOS, through the suppression of the JAK/STAT1/3-dependent NF-κB pathway and the induction of HO-1 expression in PRV-infected RAW264.7 cells. The findings indicate that the FLJWE can be used as a potential antiviral agent.
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- 2021
19. Suppressive Effect of Tetrahydrocurcumin on Pseudomonas aeruginosa Lipopolysaccharide-Induced Inflammation by Suppressing JAK/STAT and Nrf2/HO-1 Pathways in Microglial Cells
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Hui-Wen Lin, Tzu-Chun Chen, Jui-Hsuan Yeh, Shang-Chun Tsou, Inga Wang, Ting-Jing Shen, Chen-Ju Chuang, and Yuan-Yen Chang
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Aging ,Article Subject ,mental disorders ,Cell Biology ,General Medicine ,Biochemistry - Abstract
Brain inflammation, a pathological feature of neurodegenerative disorders, exhibits elevated microglial activity and increased levels of inflammatory factors. The present study was aimed at assessing the anti-inflammatory response of tetrahydrocurcumin (THC), the primary hydrogenated metabolite of curcumin, which was applied to treat Pseudomonas aeruginosa (P.a.) lipopolysaccharide- (LPS-) stimulated BV2 microglial cells. THC reduced P.a. LPS–induced mortality and the production of inflammatory mediators IL-6, TNF-α, MIP-2, IP-10, and nitrite. A further investigation revealed that THC decreased these inflammatory cytokines synergistically with JAK/STAT signaling inhibitors. THC also increased Nrf2/HO-1 signaling transduction which inhibits iNOS/COX-2/pNFκB cascades. Additionally, the presence of the HO-1 inhibitor Snpp increased the levels of IP-10, IL-6, and nitrite while THC treatment reduced those inflammatory factors in P.a. LPS–stimulated BV2 cells. In summary, we demonstrated that THC exhibits anti-inflammatory activities in P.a. LPS-induced inflammation in brain microglial cells by inhibiting STAT1/3-dependent NF-κB activation and inducing Nrf2-mediated HO-1 expression.
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- 2022
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20. Suppressive Effect of Tetrahydrocurcumin on
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Hui-Wen, Lin, Tzu-Chun, Chen, Jui-Hsuan, Yeh, Shang-Chun, Tsou, Inga, Wang, Ting-Jing, Shen, Chen-Ju, Chuang, and Yuan-Yen, Chang
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Inflammation ,Lipopolysaccharides ,Mice ,Curcumin ,NF-E2-Related Factor 2 ,Pseudomonas aeruginosa ,Animals ,Janus Kinase 1 ,Microglia ,Nitric Oxide ,Heme Oxygenase-1 - Abstract
Brain inflammation, a pathological feature of neurodegenerative disorders, exhibits elevated microglial activity and increased levels of inflammatory factors. The present study was aimed at assessing the anti-inflammatory response of tetrahydrocurcumin (THC), the primary hydrogenated metabolite of curcumin, which was applied to treat
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- 2021
21. The Protective Effects of α-Mangostin Attenuate Sodium Iodate-Induced Cytotoxicity and Oxidative Injury via Mediating SIRT-3 Inactivation via the PI3K/AKT/PGC-1α Pathway
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Tzu-Chun Chen, Meilin Wang, Yuan-Yen Chang, Shang-Chun Tsou, Chen-Ju Chuang, Yi-Ju Lee, Hui-Wen Lin, and Jui-Hsuan Yeh
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age-related macular degeneration (AMD) ,oxidative stress ,retinal pigment epithelial (RPE) ,alpha-mangostin (α-MG) ,antiapoptotic ,antioxidant ,Physiology ,Clinical Biochemistry ,education ,RM1-950 ,medicine.disease_cause ,Biochemistry ,behavioral disciplines and activities ,Article ,Superoxide dismutase ,chemistry.chemical_compound ,medicine ,Viability assay ,Molecular Biology ,Protein kinase B ,Cell damage ,PI3K/AKT/mTOR pathway ,chemistry.chemical_classification ,Reactive oxygen species ,biology ,Cell Biology ,Glutathione ,medicine.disease ,Cell biology ,chemistry ,biology.protein ,Therapeutics. Pharmacology ,Oxidative stress ,psychological phenomena and processes - Abstract
It is well known that age-related macular degeneration (AMD) is an irreversible neurodegenerative disease that can cause blindness in the elderly. Oxidative stress-induced retinal pigment epithelial (RPE) cell damage is a part of the pathogenesis of AMD. In this study, we evaluated the protective effect and mechanisms of alpha-mangostin (α-mangostin, α-MG) against NaIO3-induced reactive oxygen species (ROS)-dependent toxicity, which activates apoptosis in vivo and in vitro. MTT assay and flow cytometry demonstrated that the pretreatment of ARPE-19 cells with α-MG (0, 3.75, 7.5, and 15 μM) significantly increased cell viability and reduced apoptosis from NaIO3-induced oxidative stress in a concentration-dependent manner, which was achieved by the inhibition of Bax, cleaved PARP-1, cleaved caspase-3 protein expression, and enhancement of Bcl-2 protein. Furthermore, pre-incubation of ARPE-19 cells with α-MG markedly inhibited the intracellular ROS and extracellular H2O2 generation via blocking of the abnormal enzyme activities of superoxide dismutase (SOD), the downregulated levels of catalase (CAT), and the endogenous antioxidant, glutathione (GSH), which were regulated by decreasing PI3K-AKT-PGC-1α-STRT-3 signaling in ARPE-19 cells. In addition, our in vivo results indicated that α-MG improved retinal deformation and increased the thickness of both the outer nuclear layer and inner nuclear layer by inhibiting the expression of cleaved caspase-3 protein. Taken together, our results suggest that α-MG effectively protects human ARPE-19 cells from NaIO3-induced oxidative damage via antiapoptotic and antioxidant effects.
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- 2021
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22. Quercetin Alleviates the Accumulation of Superoxide in Sodium Iodate-Induced Retinal Autophagy by Regulating Mitochondrial Reactive Oxygen Species Homeostasis through Enhanced Deacetyl-SOD2 via the Nrf2-PGC-1α-Sirt1 Pathway
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Yu-Ta Lin, Shang-Chun Tsou, Hui-Wen Lin, Min-Yen Hsu, Yuan-Yen Chang, Connie Chen, Chee-Ming Lee, Yai-Ping Hsiao, and Wen-Chieh Liao
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0301 basic medicine ,autophagy ,mitochondrial biogenesis ,Physiology ,Clinical Biochemistry ,SOD2 ,retinal pigment epithelium ,Oxidative phosphorylation ,RM1-950 ,medicine.disease_cause ,Biochemistry ,Article ,sodium iodate ,quercetin ,Superoxide dismutase ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,medicine ,oxidative stress ,heterocyclic compounds ,Molecular Biology ,age-related macular degeneration ,chemistry.chemical_classification ,Reactive oxygen species ,biology ,Superoxide ,Autophagy ,Cell Biology ,eye diseases ,Cell biology ,030104 developmental biology ,chemistry ,Mitochondrial biogenesis ,030220 oncology & carcinogenesis ,biology.protein ,sense organs ,Therapeutics. Pharmacology ,Oxidative stress - Abstract
Oxidative damage of retinal pigment epithelium (RPE) cells plays an important role in the pathogenesis of blindness-related diseases, such as age-related macular degeneration (AMD). Quercetin, a bioactive flavonoid compound, has been shown to have a protective effect against oxidative stress-induced cell apoptosis and inflammation in RPE cells, however, the detailed mechanism underlying this protective effect is unclear. Therefore, the aim of this study was to investigate the regulatory mechanism of quercetin in a sodium iodate (NaIO3)-induced retinal damage. The clinical features of the mice, the production of oxidative stress, and the activity of autophagy and mitochondrial biogenesis were examined. In the mouse model, NaIO3 treatment caused changes in the retinal structure and reduced pupil constriction, and quercetin treatment reversed the oxidative stress-related pathology by decreasing the level of superoxide dismutase 2 (SOD2) while enhancing the serum levels of catalase and glutathione. The increased level of reactive oxygen species in the NaIO3-treated ARPE19 cells was improved by treatment with quercetin, accompanied by a reduction in autophagy and mitochondrial biogenesis. Our findings indicated that the effects of quercetin on regulating the generation of mtROS were dependent on increased levels of deacetyl-SOD2 through the Nrf2-PGC-1α-Sirt1 signaling pathway. These results demonstrated that quercetin may have potential therapeutic efficacy for the treatment of AMD through the regulation of mtROS homeostasis.
- Published
- 2021
23. Protective Effect of Quercetin on Sodium Iodate-Induced Retinal Apoptosis through the Reactive Oxygen Species-Mediated Mitochondrion-Dependent Pathway
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Meilin Wang, Hui-Wen Lin, Yai-Ping Hsiao, Min-Yen Hsu, Yi-Ju Lee, Shang-Chun Tsou, Yuan-Yen Chang, Ching-Chung Chen, and Jer-An Lin
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0301 basic medicine ,Retinal Pigment Epithelium ,Mitochondrion ,quercetin ,lcsh:Chemistry ,chemistry.chemical_compound ,Macular Degeneration ,0302 clinical medicine ,lcsh:QH301-705.5 ,Spectroscopy ,bcl-2-Associated X Protein ,chemistry.chemical_classification ,human retinal pigment epithelium ,Caspase 3 ,apoptosis ,General Medicine ,Computer Science Applications ,Cell biology ,Mitochondria ,medicine.anatomical_structure ,Poly(ADP-ribose) Polymerases ,Signal Transduction ,Iodates ,Article ,Catalysis ,Retina ,sodium iodate ,Cell Line ,Inorganic Chemistry ,03 medical and health sciences ,mitochondrial membrane potential ,Retinal Diseases ,medicine ,Humans ,Physical and Theoretical Chemistry ,Outer nuclear layer ,Molecular Biology ,age-related macular degeneration ,PI3K/AKT/mTOR pathway ,Reactive oxygen species ,Retinal pigment epithelium ,Organic Chemistry ,Retinal ,030104 developmental biology ,chemistry ,Gene Expression Regulation ,lcsh:Biology (General) ,lcsh:QD1-999 ,Apoptosis ,030221 ophthalmology & optometry ,Reactive Oxygen Species - Abstract
Age-related macular degeneration (AMD) leads to gradual central vision loss and is the third leading cause of irreversible blindness worldwide. The underlying mechanisms for this progressive neurodegenerative disease remain unclear and there is currently no preventive treatment for dry AMD. Sodium iodate (NaIO3) has been reported to induce AMD-like retinal pathology in mice. We established a mouse model for AMD to evaluate the effects of quercetin on NaIO3-induced retinal apoptosis, and to investigate the pertinent underlying mechanisms. Our in vitro results indicated that quercetin protected human retinal pigment epithelium (ARPE-19) cells from NaIO3-induced apoptosis by inhibiting reactive oxygen species production and loss of mitochondrial membrane potential as detected by Annexin V-FITC/PI flow cytometry. We also evaluated the relative expression of proteins in the apoptosis pathway. Quercetin downregulated the protein expressions of Bax, cleaved caspase-3, and cleaved PARP and upregulated the expression of Bcl-2 through reduced PI3K and pAKT expressions. Furthermore, our in vivo results indicated that quercetin improved retinal deformation and increased the thickness of both the outer nuclear layer and inner nuclear layer, whereas the expression of caspase-3 was inhibited. Taken together, these results demonstrate that quercetin could protect retinal pigment epithelium and the retina from NaIO3-induced cell apoptosis via reactive oxygen species-mediated mitochondrial dysfunction, involving the PI3K/AKT signaling pathway. This suggests that quercetin has the potential to prevent and delay AMD and other retinal diseases involving NaIO3-mediated apoptosis.
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- 2021
24. Kaempferol suppresses cell migration through the activation of the ERK signaling pathways in ARPE-19 cells
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Yi-Hsien Hsieh, Shun-Fa Yang, Hui-Wen Lin, Kai Wang, Hsiang-Wen Chien, Yuan-Yen Chang, and Nuo-Yi Yu
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Adult ,Male ,MAP Kinase Signaling System ,Health, Toxicology and Mutagenesis ,Retinal Pigment Epithelium ,010501 environmental sciences ,Management, Monitoring, Policy and Law ,Matrix (biology) ,Toxicology ,01 natural sciences ,Cell Line ,Young Adult ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Cell Movement ,Extracellular ,Humans ,Kaempferols ,Phosphorylation ,0105 earth and related environmental sciences ,Mitogen-Activated Protein Kinase 1 ,Mitogen-Activated Protein Kinase 3 ,Kinase ,Epithelial Cells ,Retinal ,Cell migration ,General Medicine ,Cell biology ,Matrix Metalloproteinase 9 ,chemistry ,030220 oncology & carcinogenesis ,Matrix Metalloproteinase 2 ,Signal transduction ,Kaempferol - Abstract
Kaempferol is a flavonoid with anticancer and anti-metastasis activity in different cancer-cell lines. However, the underlying mechanisms by which kaempferol acts on human retinal pigment epithelial (ARPE-19) cells remain unclear. In this study, we demonstrated that kaempferol inhibited migration and invasion in ARPE-19 cells at non-toxic dosages. We discovered that kaempferol obviously reduced the enzyme activity and protein expression of matrix metalloproteinase-2 by increasing the phosphorylated levels of extracellular signal-regulated kinases 1/2 (ERK1/2) signaling pathways. Additionally, ERK1/2-specific inhibitor PD98059 significantly reversed kaempferol's inhibitory effects on migration and expression of MMP-2 in ARPE-19 cells. Overall, our results are the first to demonstrate that kaempferol is capable of inhibiting cell migration by targeting ERK1/2 signaling in human retinal pigment epithelial cells.
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- 2018
25. Anti-inflammatory effects of
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Hui-Wen, Lin, Yi-Ju, Lee, Deng-Jye, Yang, Ming-Chang, Hsieh, Ching-Chung, Chen, Wei-Li, Hsu, Yuan-Yen, Chang, and Cheng-Wei, Liu
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Inflammation ,STAT3 Transcription Factor ,pseudorabies virus (PRV) ,Plant Extracts ,heme oxygenase-1 (HO-1) ,Anti-Inflammatory Agents ,NF-kappa B ,Membrane Proteins ,Water ,Flowers ,Antiviral Agents ,Herpesvirus 1, Suid ,Disease Models, Animal ,Lonicera ,Mice ,RAW 264.7 Cells ,STAT1 Transcription Factor ,Virus Diseases ,Flos Lonicerae Japonicae water extract (FLJWE) ,Animals ,Humans ,Heme Oxygenase-1 ,antiviral inflammatory ,Signal Transduction ,Research Paper - Abstract
This study examined the effect of the Flos Lonicerae Japonicae water extract (FLJWE), chlorogenic acid, and luteolin on pseudorabies virus (PRV)-induced inflammation in RAW264.7 cells and elucidated related molecular mechanisms. The results revealed that FLJWE and luteolin, but not chlorogenic acid, inhibited the production of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), and inflammatory cytokines in PRV-infected RAW 264.7 cells. We found that the FLJWE and luteolin suppressed nuclear factor (NF)-κB activation by inhibiting the phosphorylation of signal transducer and activator of transcription 1 and 3 (STAT1 and STAT3, respectively). Moreover, the FLJWE significantly upregulated the expression of pNrf2 and its downstream target gene heme oxygenase-1 (HO-1). Our data indicated that FLJWE and luteolin reduced the expression of proinflammatory mediators and inflammatory cytokines, such as COX-2 and iNOS, through the suppression of the JAK/STAT1/3-dependent NF-κB pathway and the induction of HO-1 expression in PRV-infected RAW264.7 cells. The findings indicate that the FLJWE can be used as a potential antiviral agent.
- Published
- 2020
26. Effects of dihydromyricetin on ARPE-19 cell migration through regulating matrix metalloproteinase-2 expression
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Shun-Fa Yang, Hung-Yu Lin, Hui-Wen Lin, Kai Wang, Yuan-Yen Chang, Nuo-Yi Yu, and Yi-Hsien Hsieh
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0301 basic medicine ,Proliferative vitreoretinopathy ,Flavonols ,Health, Toxicology and Mutagenesis ,p38 mitogen-activated protein kinases ,Management, Monitoring, Policy and Law ,Matrix metalloproteinase ,Toxicology ,Retina ,03 medical and health sciences ,Western blot ,Cell Movement ,Extracellular ,medicine ,Humans ,Phosphorylation ,Cells, Cultured ,Mitogen-Activated Protein Kinase 3 ,medicine.diagnostic_test ,Chemistry ,Kinase ,Vitreoretinopathy, Proliferative ,Epithelial Cells ,Cell migration ,General Medicine ,medicine.disease ,Cell biology ,030104 developmental biology ,Matrix Metalloproteinase 2 ,Mitogen-Activated Protein Kinases - Abstract
Dihydromyricetin (DHM), a flavanonol compound in Ampelopsis grossedentata, possesses several biological activities. However, the molecular mechanism underlying the effects of DHM on human proliferative vitreoretinopathy (PVR) remains unclear. We explored the effects of DHM on cell migration and the metastasis-promoting proteins in human retinal pigment epithelial (RPE) cells (ARPE-19 cells). Our results revealed that DHM attenuated ARPE-19 cell invasion and migration by reducing matrix metalloproteinase-2 (MMP-2) expression. Furthermore, a Western blot analysis revealed that DHM significantly reduced levels of phosphorylated c-Jun N-terminal kinase 1/2, but not those of extracellular signal-regulated kinase 1/2 and p38. In conclusion, our findings shown that DHM inhibits human RPE cell migration through the inhibition of MMP-2 expression; therefore, DHM may have potential therapeutic value in treating PVR as adjuvant therapy.
- Published
- 2018
27. Preventive effects of taurine against<scp>d</scp>-galactose-induced cognitive dysfunction and brain damage
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Chia-Chun Chiang, Dom-Gene Tu, Yi-Ling Lin, Chung-Hsi Chou, Yao-Ling Chang, Yuan-Yen Chang, and Yi-Chen Chen
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Glycation End Products, Advanced ,Male ,0301 basic medicine ,medicine.medical_specialty ,Taurine ,Hippocampus ,Water maze ,Brain damage ,medicine.disease_cause ,Mice ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Memory ,Malondialdehyde ,Internal medicine ,Glial Fibrillary Acidic Protein ,medicine ,Animals ,Humans ,Cognitive Dysfunction ,Mice, Inbred ICR ,Glial fibrillary acidic protein ,biology ,business.industry ,Dentate gyrus ,Galactose ,General Medicine ,Surgery ,Oxidative Stress ,030104 developmental biology ,Endocrinology ,chemistry ,Brain Injuries ,biology.protein ,medicine.symptom ,business ,030217 neurology & neurosurgery ,Oxidative stress ,Food Science - Abstract
Oxidative stress arising from life processes or environmental influences and its resultant cellular dysfunctions are major causes of neurodegenerative disorders. The objectives of this study were to investigate whether taurine (Tau) can prevent d-galactose-induced cognitive dysfunction and brain oxidative damage. Mice given with Tau supplementation (100 and 400 mg per kg BW per day) spent shorter (p < 0.05) time in searching target in d-galactose (100 mg per kg BW per day) treated mice in a water maze reference memory experiment. Moreover, Tau supplementation extended (p < 0.05) the searching period around the target quadrant in the probe test of the water maze, and neuronal degeneration and nucleus shrinkage in the hippocampus dentate gyrus area of d-galactose treated mice were observed to be attenuated. Tau also downregulated (p < 0.05) expression of the glial fibrillary acidic protein (Gfap) and of the cluster of differentiation marker Cd11b; meanwhile, it strengthened (p < 0.05) antioxidant capacity and lowered (p < 0.05) the accumulation of advanced glycation end-products (AGEs) in the brain. Therefore, Tau could be effective to ameliorate oxidative damage and inflammation in the brain, and apoptosis of brain cells, which further lessen the cognitive dysfunction.
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- 2018
28. Fisetin inhibits viral-induced inflammatory response in MH-S cells
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Chin Lin Hsu, Yi-Chen Chen, Yuan Yen Chang, and Hui-Wen Lin
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chemistry.chemical_compound ,chemistry ,Applied Mathematics ,General Mathematics ,Inflammatory response ,Pharmacology ,Fisetin - Published
- 2018
29. Dunaliella salina alga extract inhibits the production of interleukin-6, nitric oxide, and reactive oxygen species by regulating nuclear factor-κB/Janus kinase/signal transducer and activator of transcription in virus-infected RAW264.7 cells
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Hui-Wen Lin, Yuan Yen Chang, Tien Jye Chang, Jung Kai Tseng, Deng Jye Yang, Shih Yin Chen, Ching Chung Chen, and Cheng Wei Liu
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0301 basic medicine ,lcsh:TX341-641 ,Biology ,Nitric Oxide ,Nitric oxide ,03 medical and health sciences ,chemistry.chemical_compound ,Mice ,0302 clinical medicine ,Chlorophyta ,Animals ,SOCS3 ,Janus Kinases ,anti-inflammatory ,Pharmacology ,chemistry.chemical_classification ,reactive oxygen species ,Reactive oxygen species ,Pseudorabies ,Interleukin-6 ,Plant Extracts ,Macrophages ,lcsh:RM1-950 ,NF-kappa B ,JAK-STAT signaling pathway ,biology.organism_classification ,pseudorabies virus ,Molecular biology ,Herpesvirus 1, Suid ,Nitric oxide synthase ,STAT Transcription Factors ,030104 developmental biology ,RAW 264.7 Cells ,lcsh:Therapeutics. Pharmacology ,chemistry ,030220 oncology & carcinogenesis ,STAT protein ,biology.protein ,Dunaliella salina ,Janus kinase ,lcsh:Nutrition. Foods and food supply ,Food Science ,Signal Transduction - Abstract
Recent investigations have demonstrated that carotenoid extract of Dunaliella salina alga (Alga) contains abundant β-carotene and has good anti-inflammatory activities. Murine macrophage (RAW264.7 cells) was used to establish as an in vitro model of pseudorabies virus-induced reactive oxygen species (ROS) response. In this study, antioxidant activities of Alga were measured based on 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging, trolox equivalent antioxidant capacity assays, reducing power, and virus-induced ROS formation in RAW264.7 cells. Anti-inflammatory activities of Alga were assessed by its ability to inhibit the production of interleukin-6 and nitric oxide (NO) using enzyme-linked immunosorbent assay, then the Janus kinase/signal transducer and activator of transcription (JAK/STAT) pathway was investigated by measuring the inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), nuclear factor-κB (p50 and p65), JAK, STAT-1/3, and suppressor of cytokine signaling 3 (SOCS3) by Western blotting. In addition, Alga inhibited virus replication by plaque assay. Our results showed that the Alga had high antioxidant activity, significantly reduced the virus-induced accumulation of ROS, and inhibited the levels of nitric oxide and interleukin-6. Further studies revealed that Alga also downregulated the gene and protein expressions of iNOS, COX-2, nuclear factor-κB (p50 and p65), and the JAK/STAT pathway. The inhibitory effects of Alga were similar to pretreatment with specific inhibitors of JAK and STAT-3 in pseudorabies virus -infected RAW264.7 cells. Alga enhanced the expression of SOCS3 to suppress the activity of the JAK/STAT signaling pathway in pseudorabies virus-infected RAW264.7 cells. In addition, Alga has decreased viral replication (p
- Published
- 2017
30. Hepatoprotective effects of naturally fermented noni juice against thioacetamide-induced liver fibrosis in rats
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Hui-Wen Lin, Yuan Yen Chang, Yi-Chen Chen, Chien Chun Li, Deng Jye Yang, and Yi-Ling Lin
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0301 basic medicine ,Male ,Antioxidant ,medicine.medical_treatment ,noni juice ,Inflammation ,antioxidant capacity ,Pharmacology ,Thioacetamide ,Liver Cirrhosis, Experimental ,Protective Agents ,03 medical and health sciences ,chemistry.chemical_compound ,medicine ,Animals ,Noni juice ,Morinda ,Rats, Wistar ,MMP-2/MMP-9 activity ,liver fibrosis ,chemistry.chemical_classification ,Medicine(all) ,Reactive oxygen species ,lcsh:R5-920 ,biology ,business.industry ,General Medicine ,biology.organism_classification ,Endoplasmic Reticulum Stress ,Rats ,030104 developmental biology ,chemistry ,Biochemistry ,Liver ,Matrix Metalloproteinase 9 ,Fermentation ,Hepatic stellate cell ,Matrix Metalloproteinase 2 ,Cytokine secretion ,medicine.symptom ,business ,ER stress ,lcsh:Medicine (General) - Abstract
Background: Excessive reactive oxygen species (ROS) can result in inflammation and cytokine secretion in the liver, and then activate hepatic stellate cells that cause the accumulation of extracellular matrix proteins, especially collagen, in liver tissue. Naturally fermented noni juice (NJ; Morinda citrifolia) has been used for decades as a nutraceutical in humans. In this study, we intended to examine if NJ can ameliorate ROS-induced liver fibrosis via a thioacetamide (TAA)-induced rat model. Methods: The 50 rats used in this study were separated into five groups of 10 rats each for 8 weeks as follows: (1) control group; (2) TAA; (3) TAA + low-dose NJ (2.51 mL NJ/kg); (4) TAA + medium-dose NJ (5.02 mL NJ/kg); and (5) TAA + high-dose NJ (7.52 mL NJ/kg). Results: Treatment with TAA resulted in lower body weight and serum lipid levels (p
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- 2017
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31. Litchi ( Litchi chinensis Sonn.) flower proanthocyanidin fraction exhibited protective efficacy to suppress nickel‐induced expression for vascular endothelial growth factor in HepG2 cells
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Yi-Chen Chen, Jau Tien Lin, Yuan Yen Chang, Po Lin Liao, and Deng Jye Yang
- Subjects
Vascular Endothelial Growth Factor A ,030309 nutrition & dietetics ,Biophysics ,Gene Expression ,Flowers ,Proto-Oncogene Mas ,Phosphatidylinositol 3-Kinases ,03 medical and health sciences ,chemistry.chemical_compound ,0404 agricultural biotechnology ,Litchi ,Nickel ,Humans ,Proanthocyanidins ,Inducer ,Protein kinase A ,Protein kinase B ,PI3K/AKT/mTOR pathway ,Pharmacology ,0303 health sciences ,Janus kinase 2 ,biology ,Plant Extracts ,Kinase ,Hep G2 Cells ,04 agricultural and veterinary sciences ,Cell Biology ,040401 food science ,Vascular endothelial growth factor ,Hep G2 ,chemistry ,Cancer research ,biology.protein ,Mitogen-Activated Protein Kinases ,Proto-Oncogene Proteins c-akt ,Signal Transduction ,Food Science - Abstract
The protective efficacy of litchi (Litchi chinensis Sonn.) flower proanthocyanidin fraction (LFPF) composed of (-)-epicatechin and proanthocyanidin A2 against vascular endothelial growth factor (VEGF) generation induced by nickel (Ni) in hepatocellular carcinoma (Hep G2) cells was studied. VEGF is an angiogenic inducer, which promotes tumor angiogenesis, leading to rapid tumor growth and metastasis. VEGF could be substantially induced in the Ni-mediated Hep G2 cells. Through LFPF treatment, the Ni-induced VEGF generation could be suppressed significantly. The inhibition of HIF-1α expression by blocking phosphatidylinositol-3-kinase (PI3K)/protein kinase B (AKT)/mammalian target of rapamycin (mTOR) pathways, and the suppression of Janus kinase 2 (JAK2)/signal transducers and activators of transcription 3 (STAT 3), and Raf-1 proto-oncogene, serine/threonine kinase (RAF1)/mitogen-activated protein kinase (MEK1/2)/extracellular-signal-regulated kinase (ERK1/2) pathways are important molecular mechanisms for the LFPF action. LFPF should probably reduce the risk of liver cancer in Ni-contaminated environments by inhibiting VEGF expression. PRACTICAL APPLICATIONS: LFPF mainly contained (-)-epicatechin and proanthocyanidin A2. Our results demonstrated that LFPF considerably suppressed the Ni-induced VEGF expression through inhibition of JAK2/STAT 3 and RAF1/MEK1/2/ERK1/2 pathways and prohibited HIF-1α expression through blocking PI3K/AKT/mTOR pathway. Litchi flowers might have the potential to diminish the liver cancer risk in a Ni-contaminated environment through suitable treatment.
- Published
- 2019
32. Nickel-induced VEGF expression via regulation of Akt, ERK1/2, NFκB, and AMPK pathways in H460 cells
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Shih Yin Chen, Yuan-Yen Chang, Meilin Wang, Chieh-Lin Wu, Jui-Chin Wang, Hui-Wen Lin, Ching-Chung Chen, and Jiunn-Liang Ko
- Subjects
MAPK/ERK pathway ,Vascular Endothelial Growth Factor A ,Lung Neoplasms ,Angiogenesis ,Cell Survival ,MAP Kinase Signaling System ,Health, Toxicology and Mutagenesis ,010501 environmental sciences ,Management, Monitoring, Policy and Law ,AMP-Activated Protein Kinases ,Toxicology ,01 natural sciences ,03 medical and health sciences ,chemistry.chemical_compound ,Phosphatidylinositol 3-Kinases ,0302 clinical medicine ,Nickel ,Carcinoma, Non-Small-Cell Lung ,Cell Line, Tumor ,Humans ,Phosphorylation ,Protein kinase A ,Protein kinase B ,PI3K/AKT/mTOR pathway ,0105 earth and related environmental sciences ,Neovascularization, Pathologic ,NF-kappa B ,AMPK ,General Medicine ,Vascular endothelial growth factor ,chemistry ,030220 oncology & carcinogenesis ,Cancer research ,Environmental Pollutants ,Signal transduction ,Proto-Oncogene Proteins c-akt - Abstract
Prospective cohort studies have indicated that a highly nickel-polluted environment may severely affect human health, resulting in such conditions as respiratory tract cancers. Such exposure can trigger vascular endothelial growth factor (VEGF) expression. However, the signal transduction pathways leading to VEGF induction by nickel compounds are not well understood. This study revealed the occurrence of VEGF induction in human non-small-cell lung cancer H460 cells exposed to NiCl2 . Moreover, exposing H460 cells to NiCl2 activated extracellular signal-regulated protein kinase (ERK), nuclear factor kappa B (NFκB), and protein kinase B (Akt) as well as downregulated AMP activated protein kinase (AMPK) expression. The mitogen-activated protein kinase (MAPK) and ERK inhibitor significantly blocked NiCl2 -induced ERK activation and VEGF production. Pretreating H460 cells with a PI3K/Akt inhibitor substantially inhibited NiCl2 -induced VEGF expression and reduced Akt, ERK, and NFκB phosphorylation. Furthermore, 5-aminoimidazole-4-carboxamide ribonucleoside-induced AMPK activation improved VEGF expression in NiCl2 -treated H460 cells significantly. These results indicate that NiCl2 induces VEGF production through Akt, ERK, NFκB activation and AMPK suppression and mediates various types of pathophysiological angiogenesis.
- Published
- 2018
33. Anti-inflammatory effects of Flos Lonicerae Japonicae Water Extract are regulated by the STAT/NF-κB pathway and HO-1 expression in Virus-infected RAW264.7 cells.
- Author
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Hui-Wen Lin, Yi-Ju Lee, Deng-Jye Yang, Ming-Chang Hsieh, Ching-Chung Chen, Wei-Li Hsu, Yuan-Yen Chang, and Cheng-Wei Liu
- Published
- 2021
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34. Luteolin inhibits viral-induced inflammatory response in RAW264.7 cells via suppression of STAT1/3 dependent NF-κB and activation of HO-1
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Shih Yin Chen, Cheng Wei Liu, Tien Jye Chang, Jung Kai Tseng, Hui-Wen Lin, Yuan Yen Chang, and Deng Jye Yang
- Subjects
STAT3 Transcription Factor ,0301 basic medicine ,MAPK/ERK pathway ,NF-E2-Related Factor 2 ,p38 mitogen-activated protein kinases ,medicine.medical_treatment ,Inflammation ,Pharmacology ,Biochemistry ,Antioxidants ,Proinflammatory cytokine ,Mice ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Physiology (medical) ,medicine ,Animals ,Phosphorylation ,Luteolin ,Chemistry ,NF-kappa B ,Membrane Proteins ,NF-κB ,NFKB1 ,Herpesvirus 1, Suid ,RAW 264.7 Cells ,STAT1 Transcription Factor ,030104 developmental biology ,Cytokine ,Gene Expression Regulation ,030220 oncology & carcinogenesis ,medicine.symptom ,Heme Oxygenase-1 ,Drugs, Chinese Herbal - Abstract
Luteolin is a common dietary flavonoid present in Chinese herbal medicines that has been reported to have important anti-inflammatory properties. Previous studies have shown that luteolin is an anti-inflammatory and anti-oxidative agent. In this study, the anti-virus inflammatory capacity of luteolin and its molecular mechanisms of action were analyzed. The cytotoxic effects of luteolin were assessed in the presence or absence of pseudorabies virus (PRV) via LDH and MTT assays. The results showed that luteolin (
- Published
- 2016
35. Induction of apoptotic death of human hepatocellular carcinoma (HepG2) cells by ethanolic extract from litchi (Litchi chinensis Sonn.) flower
- Author
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Deng Jye Yang, Yu Pei Chang, Yuan Yen Chang, Shih Han Hsu, Yi-Chen Chen, Jau Tien Lin, and Chao Chin Hu
- Subjects
PI3K/Akt ,Nutrition and Dietetics ,Phosphoinositide 3-kinase ,biology ,Nutrition. Foods and food supply ,Cytochrome c ,Poly ADP ribose polymerase ,Medicine (miscellaneous) ,Apoptosis ,Caspase ,Molecular biology ,Bcl-2 family proteins ,Adenosine diphosphate ,chemistry.chemical_compound ,Biochemistry ,chemistry ,Hep G2 cell ,biology.protein ,Phosphorylation ,TX341-641 ,Litchi (Litchi chinensis Sonn.) flower ,Protein kinase B ,PI3K/AKT/mTOR pathway ,Food Science - Abstract
The cytotoxic activity of litchi (Litchi chinensis Sonn.) flower ethanolic extract (LFEE) against A549 (human lung adenocarcinoma), KB (human nasopharyngeal carcinoma), MCF-7 (human breast adenocarcinoma) and HepG2 (human hepatocellular carcinoma) cells was evaluated. LFEE exhibited better anti-proliferative action against HepG2 cells, which induced G2/M phase arrest and apoptosis in HepG2 cells. HepG2 cells treated with LFEE (0.3 mg/mL) enhanced expressions of p53, tBid, Bad and Bax, along with decreased expressions of Bcl-2 and Bcl-xL, and induced the release of cytochrome c from mitochondria to cytosol. That also accompanied by activation of caspases-3, -8 and -9 and cleavage of poly (adenosine diphosphate (ADP)-ribose) polymerase (PARP); furthermore, down-regulations of phosphoinositide 3 kinase (PI3K), Akt, Akt phosphorylation and Bad phosphorylation could also be observed. Five flavonoids (total amount, 101.07 mg/g dried extract (g DE)), nine phenolic acids (total amount, 55.07 mg/ g DE) and proanthocyanidin A2 (81.20 mg/ g DE) could be determined in LFEE.
- Published
- 2015
36. L-carnitine ameliorates dyslipidemic and hepatic disorders induced by a high-fat diet via regulating lipid metabolism, self-antioxidant capacity, and inflammatory response
- Author
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Yi-Hsieng Samuel Wu, Chang-Chao Su, Kuo-Tai Yang, Chung-Hsi Chou, Jung-Kai Tseng, Yuan-Yen Chang, Chaung-Sung Chang, and Yi-Chen Chen
- Subjects
medicine.medical_specialty ,Serum lipid ,Inflammatory response ,Medicine (miscellaneous) ,Biology ,Lipid homeostasis ,Internal medicine ,L-carnitine ,medicine ,TX341-641 ,Carnitine ,Cholesterol homeostasis ,Nutrition and Dietetics ,Nutrition. Foods and food supply ,digestive, oral, and skin physiology ,nutritional and metabolic diseases ,food and beverages ,High fat diet ,Lipid metabolism ,Antioxidant effect ,Antioxidant capacity ,High-fat diet ,Endocrinology ,Fat diet ,Hepatic disorders ,Non-alcoholic fatty liver disease ,Food Science ,medicine.drug - Abstract
The cardiovascular and liver protection of carnitine (CNT) in a high-fat diet was investigated. Male C57BL/6 mice were divided randomly into four groups: 1) CON: Control, 2) HFD: high-fat diet, 3) CNTL: HFD + 500 mg CNT/kg BW, and 4) CNTH: HFD + 1500 mg CNT/kg BW. After a 25-week experimental period, CNT supplementation reduced (p
- Published
- 2015
37. Synergic effect of curcumin and its structural analogue (Monoacetylcurcumin) on anti-influenza virus infection
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Tse-Yu Chung, Guan-Heng Chen, Jason Tze-Cheng Tzen, Yuan-Yen Chang, Yi-Lin Li, Wei-Li Hsu, Sarah M. Richart, Yoshiyuki Mizushina, and Kak-Shan Shia
- Subjects
0301 basic medicine ,Curcumin ,lcsh:TX341-641 ,Pharmacology ,Virus Replication ,Antiviral Agents ,Monoacetylcurcumin ,Virus ,Madin Darby Canine Kidney Cells ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Dogs ,Influenza, Human ,Animals ,Humans ,Phosphorylation ,Inhibitory effect ,Chemistry ,lcsh:RM1-950 ,Drug Synergism ,030104 developmental biology ,lcsh:Therapeutics. Pharmacology ,Polyphenol ,Influenza A virus ,030220 oncology & carcinogenesis ,Akt phosphorylation ,lcsh:Nutrition. Foods and food supply ,Proto-Oncogene Proteins c-akt ,Food Science - Abstract
Curcumin (Cur), a polyphenolic compound extracted from spice and common food colourant turmeric, contains versatile bio-activities. Monoacetylcurcumin (MAC), a structural analogue of Cur, differs from Cur by acetyl modification, but retains enone groups. Comparative analysis revealed MAC effectively inhibited influenza virus infection (IAV) to a similar extent as, if not superior to, curcumin. Both compounds mildly reduced viral NA activity. Surprisingly, unlike Cur, the MAC inhibition of IAV did not occur through the blocking of HA activity. However, MAC strongly dampened Akt phosphorylation, the prerequisite signalling for efficient IAV propagation. A much stronger inhibition effect on IAV infection was observed when MAC treatment was in combination with Cur. Collectively, MAC demonstrated clear antiviral activity, and likely inhibited IAV via multiple mechanisms that were not identical to Cur. Importantly, Cur and MAC in combination synergistically inhibited IAV infection. Keywords: Curcumin, Influenza virus, Antiviral, Haemagglutinin, Synergic
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- 2017
38. Molecular mechanisms of the effects of the ethanolic extract of Muntingia calabura Linn. fruit on lipopolysaccharide-induced pro-inflammatory mediators in macrophages
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Deng Jye Yang, Jau Tien Lin, Yuan Yen Chang, Bo Yan Shen, and Yi-Chen Chen
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0301 basic medicine ,Lipopolysaccharides ,Cell Survival ,NF-E2-Related Factor 2 ,Interleukin-1beta ,Anti-Inflammatory Agents ,Nitric Oxide ,p38 Mitogen-Activated Protein Kinases ,Dinoprostone ,Nitric oxide ,Ferulic acid ,03 medical and health sciences ,chemistry.chemical_compound ,Magnoliopsida ,Mice ,Vanillic acid ,Caffeic acid ,Animals ,Gallic acid ,Gentisic acid ,030109 nutrition & dietetics ,Interleukin-6 ,Plant Extracts ,Tumor Necrosis Factor-alpha ,Rosmarinic acid ,Macrophages ,NF-kappa B ,General Medicine ,Syringic acid ,RAW 264.7 Cells ,chemistry ,Biochemistry ,Cyclooxygenase 2 ,Fruit ,Inflammation Mediators ,Mitogen-Activated Protein Kinases ,Heme Oxygenase-1 ,Food Science - Abstract
Four flavonoids (epicatechin, rutin, diosmin and luteolin) and 11 phenolic acids (gallic acid, gentisic acid, p-hydroxybezoic acid, vanillic acid, caffeic acid, p-coumaric acid, ferulic acid, sinapic acid, syringic acid, p-anisic acid and rosmarinic acid) were determined in the ethanolic extract of M. calabura Linn. fruit gathered in Taiwan. The extract suppressed the lipopolysaccharide-stimulated expressions of inducible nitric oxide synthase and cyclooxygenase-2 as well as the productions of nitric oxide, prostaglandin E2 and pro-inflammatory cytokines [tumour necrosis factor-α, interleukin (IL)-1β and IL-6] in RAW264.7 macrophages. The extract modulated the inflammatory processes through inactivation of nuclear factor-κB (NF-κB), mitogen-activated protein kinases (MAPKs) p38 and c-Jun NH2-terminal kinase 1/2 (JNK1/2), and Janus kinase 2 (JAK2)/signal transducers and activators of transcription 1/3 (STAT1/3). Moreover, the activation of nuclear factor erythroid-2-related factor 2 (Nrf2) followed by inducing the production of heme oxygenase-1 (HO-1) is also related to the anti-inflammatory effect of the extract.
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- 2017
39. Rheumatoid arthritis is associated with rs17337023 polymorphism and increased serum level of the EGFR protein
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Hui-Wen Lin, Ying Ju Lin, Hsin-Han Chen, Shih Yin Chen, Yu Chuen Huang, Yuan Yen Chang, Shih Ping Liu, Fuu Jen Tsai, Da Chung Chen, and Chung-Ming Huang
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Oncology ,Male ,Heredity ,Arthritis ,lcsh:Medicine ,Artificial Gene Amplification and Extension ,Pathology and Laboratory Medicine ,Polymerase Chain Reaction ,Geographical Locations ,Arthritis, Rheumatoid ,0302 clinical medicine ,Gene Frequency ,Genotype ,Medicine and Health Sciences ,Medicine ,Ethnicities ,Enzyme-Linked Immunoassays ,lcsh:Science ,Immune Response ,education.field_of_study ,Multidisciplinary ,Han Chinese ,Population groupings ,Middle Aged ,ErbB Receptors ,Genetic Mapping ,030220 oncology & carcinogenesis ,Female ,Polymorphism, Restriction Fragment Length ,Research Article ,Adult ,medicine.medical_specialty ,Asia ,Population ,Immunology ,Taiwan ,Single-nucleotide polymorphism ,Rheumatoid Arthritis ,Variant Genotypes ,Enzyme-Linked Immunosorbent Assay ,Research and Analysis Methods ,Polymorphism, Single Nucleotide ,Autoimmune Diseases ,03 medical and health sciences ,Signs and Symptoms ,Rheumatology ,Diagnostic Medicine ,Internal medicine ,Genetics ,SNP ,Humans ,Genetic Predisposition to Disease ,education ,Molecular Biology Techniques ,Immunoassays ,Genotyping ,Molecular Biology ,Aged ,030203 arthritis & rheumatology ,Inflammation ,Chi-Square Distribution ,business.industry ,Haplotype ,lcsh:R ,Biology and Life Sciences ,medicine.disease ,Genotype frequency ,Haplotypes ,People and Places ,Immunologic Techniques ,Clinical Immunology ,lcsh:Q ,Clinical Medicine ,business - Abstract
Objective We have previously described the association of rheumatoid arthritis (RA) prevalence and two epidermal growth factor receptor (EGFR) SNPs (rs17337023 and rs2227983) among the Taiwanese population. This present study aimed to elucidate whether the SNPs can alter the expression of EGFR in the progression of RA. Methods The cohort study included 366 Taiwan's Han Chinese RA patients and 326 age and gender matched healthy controls. Blood samples collected from the participants were analyzed to determine their serum EGFR levels and to identify EGFR SNPs from their genomic DNA. Genotyping for EGFR SNPs was performed by restriction fragment length polymorphism (RFLP) assay. The relationship between EGFR SNP and the clinical manifestations of RA was evaluated. Results Our results showed that a statistically significant difference in genotype frequency distributions at rs17337023 SNP for RA patients and controls (p ˂ 0.05). In addition, compared with the haplotype frequencies between case and control groups, the RA patient with the GT haplotype appeared to be a significant "protective" haplotype compared with other haplotypes (OR: 0.73, 95% CI: 0.59-0.91; p = 0.005). Furthermore, the increased serum level of EGFR was also observed in RA patients (p ˂ 0.001). Conclusion Our study showed that RA is associated with rs17337023 SNP in EGFR gene and increased serum level of the EGFR protein. These findings suggest EGFR is worthy of further investigation as a therapeutic target for RA.
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- 2017
40. Regulation of virus-induced inflammatory response by Dunaliella salina alga extract in macrophages
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Yuan Yen Chang, Shih Yin Chen, Deng Jye Yang, Yi-Chen Chen, Tien Jye Chang, Cheng Wei Liu, and Hui-Wen Lin
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medicine.drug_class ,Nitric Oxide Synthase Type II ,Inflammation ,Nitric Oxide ,Virus Replication ,Toxicology ,Anti-inflammatory ,Cell Line ,Microbiology ,Mice ,Microalgae ,medicine ,Animals ,Viability assay ,Protein kinase B ,PI3K/AKT/mTOR pathway ,Virus quantification ,biology ,Plant Extracts ,Macrophages ,General Medicine ,biology.organism_classification ,Herpesvirus 1, Suid ,Cell culture ,Cyclooxygenase 1 ,Dunaliella salina ,Inflammation Mediators ,medicine.symptom ,Food Science - Abstract
Previous reports have suggested that many constituents within various algal samples are able to attenuate LPS-induced inflammatory effects. To date no report has been published on the regulation of virus-induced inflammatory response of Dunaliella salina carotenoid extract. In the present study, the anti-inflammatory effect of D. salina carotenoid extract on pseudorabies virus (PRV)-infected RAW 264.7 macrophages was investigated. We evaluated the anti-inflammatory effect of D. salina carotenoid extract on PRV-infected RAW 264.7 cells by measuring cell viability, cytotoxicity, production of inflammatory mediators such as NO, iNOS, COX-2, pro-inflammatory cytokines and anti-virus replication by plaque assay. We found down-regulation of the expression of the iNOS, COX-2 and pro-inflammatory genes IL-1β, IL-6, TNF-α, and MCP-1 in a dose-dependent manner. Although there was no effect on viral replication, there were tendencies toward lower virus titer and tendencies toward higher cell survival. Most importantly, we found that inhibition of TLR9, PI3K and Akt phosphorylation plays a crucial role in the extract-mediated NF-κB regulation by modulating IKK-IκB signaling in PRV-infected RAW264.7 cells. These results indicate that D. salina carotenoid extracts inhibited inflammation by inhibition of NF-κB activation by TLR9 dependent via PI3K/Akt inactivation.
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- 2014
41. Association BetweenXRCC3Thr241Met SNP and Systemic Lupus Erythematosus in Han Chinese Patients in Taiwan, and a Meta-Analysis of Healthy Populations
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Ying Ju Lin, Shih Yin Chen, Yng Tay Chen, Fuu Jen Tsai, Chung-Ming Huang, and Yuan Yen Chang
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Microbiology (medical) ,Genetics ,education.field_of_study ,Biochemistry (medical) ,Clinical Biochemistry ,Population ,Haplotype ,Public Health, Environmental and Occupational Health ,Single-nucleotide polymorphism ,Hematology ,Biology ,Genotype frequency ,Medical Laboratory Technology ,Genotype ,Immunology and Allergy ,International HapMap Project ,education ,Genotyping ,Allele frequency - Abstract
Background X-ray repair cross-complementing group 3 (XRCC3) plays a crucial role in mammalian DNA repair processes. The polymorphism of XRCC3, rs861539 (Thr > Met at codon 241), is common in populations worldwide. This study analyzed the relationship between this functional single nucleotide polymorphism and systemic lupus erythematosus (SLE) in the Han Chinese population in Taiwan (HC-TW). Methods Genotyping was performed using polymerase chain reaction restriction fragment length polymorphism on 163 SLE patients and 191 healthy participants in the control group. Results The data showed that the genotype frequency at codon 241 did not differ significantly between the SLE patients and the healthy participants in the control group; however, the allele frequency analysis indicated a significant difference between these groups. In addition, we used the genotype and allele frequencies of 191 healthy HC-TW participants for comparison with HapMap populations. The results indicated a significant difference of XRCC3 Thr241Met allele and genotype frequencies between the HC-TW population and HapMap populations, except for the other Han Chinese populations. A prior study showed that Thr241 > Met substitution in XRCC3 protein was positive as damaging and functional consequences as well. Conclusion This is the first study to demonstrate the difference of XRCC3 Thr241 > Met variant between the HC-TW population and HapMap population.
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- 2014
42. Toll-like receptor 9 SNPs are susceptible to the development and progression of membranous glomerulonephritis: 27 years follow-up in Taiwan
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Xian Xiu Chen, Chia Jung Chan, Ka Lok Ng, Fuu Jen Tsai, Yng Tay Chen, Shih Yin Chen, Chang-Ching Wei, Yuan Yen Chang, and Cheng-Hsu Chen
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Adult ,Taiwan ,Lupus nephritis ,Single-nucleotide polymorphism ,Critical Care and Intensive Care Medicine ,Glomerulonephritis, Membranous ,Polymorphism, Single Nucleotide ,Membranous nephropathy ,Genotype ,medicine ,Humans ,SNP ,Genetic Predisposition to Disease ,Aged ,Retrospective Studies ,business.industry ,Haplotype ,Glomerulonephritis ,General Medicine ,Odds ratio ,Middle Aged ,medicine.disease ,Nephrology ,Toll-Like Receptor 9 ,Immunology ,Disease Progression ,business ,Follow-Up Studies - Abstract
The purpose of this study was to determine whether toll-like receptors 9 (TLR9) gene polymorphisms (rs352139 and rs352140) were markers of susceptibility to the development and progression of membranous nephropathy (MGN) in Taiwanese patients. The polymorphisms were investigated by polymerase chain reaction in 397 Taiwanese individuals (134 MGN patients and 263 controls). Patients with malignancy, chronic infectious diseases, lupus nephritis, or drug-induced secondary MGN were excluded from the study. Data showed AA genotype at rs352139 SNP or GG genotype at rs352140 SNP may indicate higher risk for MGN (odds ratio [OR] = 1.55; 95% confidence interval [CI] = 1.02-2.35, at rs352139 SNP; OR = 1.57; 95% CI = 1.03-2.39, at rs352140 SNP). However, MGN patients with A-G haplotype were susceptible for decreased creatinine clearance rate and for seriously tubule-interstitial fibrosis. The result suggests for the first time that TLR9 (rs352139 and rs352140) polymorphisms may contribute to the development and progression of MGN.
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- 2013
43. Suppressive effect of carotenoid extract of Dunaliella salina alga on production of LPS-stimulated pro-inflammatory mediators in RAW264.7 cells via NF-κB and JNK inactivation
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Jau Tien Lin, Meilin Wang, Hui-Wen Lin, Yuan Yen Chang, Fung Jou Lu, Shih Chuan Liu, Yi-Chen Chen, Tien Jye Chang, and Deng Jye Yang
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Nutrition and Dietetics ,biology ,Lipopolysaccharide ,Nutrition. Foods and food supply ,Kinase ,Medicine (miscellaneous) ,NF-κB ,IκB kinase ,biology.organism_classification ,Nitric oxide ,Nitric oxide synthase ,chemistry.chemical_compound ,Biochemistry ,chemistry ,Dunaliella salina ,biology.protein ,Caroteinoid ,TX341-641 ,Tumor necrosis factor alpha ,JNK ,Pro-inflammatory mediator ,Food Science - Abstract
The carotenoid extract from Dunaliella salina was used to evaluate the suppressive effects on lipopolysaccharide (LPS)-induced pro-inflammatory mediators in RAW264.7 cells. The extract composed all-trans forms of α-carotene (28.8 mg/g extract), β-carotene (471.1 mg/g extract), lutein (7.1 mg/g extract) and zeaxanthin (7.2 mg/g extract), 13- or 13′-cis-β-carotene (12.1 mg/g extract), 9- or 9′-cis-α-carotene (19.1 mg/g extract) and 9- or 9′-cis-β-carotene (440.3 mg/g extract) dose-dependently reduced the production of interleukin (IL)-1β, IL-6 and tumor necrosis factor-α (TNF-α), the protein expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2), and the secretion of nitric oxide (NO) and prostaglandin E2 (PGE2) in LPS-activated RAW264.7 cells. Its attenuation of LPS-induced inflammatory responses was closely related to inhibition of the nuclear NF-κB p50 subunit translocation by blocking inhibitor of κBα (IκB) phosphorylation and degradation correlated with suppressing IκB kinase (IKK) α/β phosphorylation, as well as down-regulation of the c-Jun NH2-terminal kinase (JNK) activation.
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- 2013
44. Alleviative effects of deep-seawater drinking water on hepatic lipid accumulation and oxidation induced by a high-fat diet
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Yi-Chen Chen, Jr-Wei Chen, Yuan-Yen Chang, Ming-Hsu Chang, I-Shu Chen, Chin-Lin Hsu, Sheng-Shih Chen, and Hui-Wen Lin
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Male ,medicine.medical_specialty ,H&E stain ,Diet, High-Fat ,Liver disease ,chemistry.chemical_compound ,nonalcoholic hepatosteatosis ,Internal medicine ,Cricetinae ,Malondialdehyde ,medicine ,Animals ,Seawater ,Medicine(all) ,lcsh:R5-920 ,Triglyceride ,liver lipid peroxidation ,Mesocricetus ,business.industry ,Drinking Water ,Lipid metabolism ,General Medicine ,medicine.disease ,Lipid Metabolism ,Glutathione ,lipid homeostasis ,Endocrinology ,chemistry ,Distilled water ,Liver ,deep-seawater drinking water ,Steatosis ,business ,lcsh:Medicine (General) ,Oxidation-Reduction ,Homeostasis - Abstract
Background: Hepatic steatosis is defined as excessive amounts of triglyceride and other fats inside liver cells and has become an emergent liver disease in developed and developing countries. Methods: Deep seawater (DSW)300, DSW900, and DSW1500 drinking waters were formulated via a combination of reverse osmosis and electrodialysis. Hamsters on a high-fat diet were assigned to drink the following solutions: (1) normal distilled water, (2) DSW300, (3) DSW900, or (4) DSW1500. Serum, liver, and fecal biochemical values, expression of hepatic genes related to fatty-acid homeostasis, as well as liver antioxidative levels were measured after a 6-week feeding period. Additionally, hematoxylin and eosin staining was used to investigate the liver histopathology. Results: Serum/liver lipids, liver sizes, liver malondialdehyde content, and serum aspartate aminotransferase and alanine aminotransferase of high-fat diet hamsters were reduced (p 0.05) altered, DSW drinking water upregulated (p
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- 2013
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45. Antioxidative and anti-inflammatory effects of polyphenol-rich litchi (Litchi chinensis Sonn.)-flower-water-extract on livers of high-fat-diet fed hamsters
- Author
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Deng Jye Yang, Yi-Ling Lin, Yi-Chen Chen, Yuan Yen Chang, Jr Wei Chen, and Chih-Hsien Chiu
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Nutrition and Dietetics ,medicine.drug_class ,Nutrition. Foods and food supply ,Medicine (miscellaneous) ,Liver damage index ,High fat diet ,Litchi-flower-water-extract ,Matrix metalloproteinase ,Biology ,Liver cytokine level ,Anti-inflammatory ,Hepatic lipids ,chemistry.chemical_compound ,chemistry ,Biochemistry ,Polyphenol ,Antioxidative capacity ,medicine ,TX341-641 ,Food science ,Gentisic acid ,Food Science - Abstract
Gentisic acid and epicatechin are two major compounds in phenolic acids and flavonoids of litchi-flower-water extracts (LFWEs), respectively. Increased (p
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- 2013
46. Effects of antrosterol from Antrodia camphorata submerged whole broth on lipid homeostasis, antioxidation, alcohol clearance, and anti-inflammation in livers of chronic-alcohol fed mice
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Jr-Wei Chen, Yi-Hsieng Samuel Wu, Yi-chen Liu, Yi-Chen Chen, Yuan-Yen Chang, Yueh-Hsiung Kuo, and Yi-Ling Lin
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0301 basic medicine ,Male ,Alcoholic liver disease ,Liquid diet ,Growth ,Biology ,Pharmacology ,Antioxidants ,03 medical and health sciences ,Mice ,Liver Function Tests ,Drug Discovery ,medicine ,Animals ,Antrodia ,Ethanol metabolism ,Alcohol dehydrogenase ,030109 nutrition & dietetics ,Ethanol ,Hepatitis, Alcoholic ,Anti-Inflammatory Agents, Non-Steroidal ,Fatty Acids ,Central Nervous System Depressants ,CYP2E1 ,medicine.disease ,biology.organism_classification ,Lipid Metabolism ,Diet ,Mice, Inbred C57BL ,Sterols ,030104 developmental biology ,Biochemistry ,Hepatoprotection ,Liver ,Lipogenesis ,biology.protein ,Cytokines - Abstract
Ethnopharmacological relevance Antrodia camphorata is a functional fungus in Taiwan and owns several pharmacological functions. Antrosterol, a bioactive constitute of sterols in edible Antrodia camphorata submerged whole broth, can protect liver from CCl4 damage via enhancing antioxidant and anti-inflammatory capacities. Aim of the study The aim of this study was to investigate the hepatoprotection of antrosterol (named as EK100) against alcohol consumption. Materials and methods A Lieber-DeCarli regular EtOH diet (EtOH liquid diet, 5% (v/v) alcohol) was applied to induce alcoholic liver damage. Mice were randomly divided into 5 groups: (1) Control: control liquid diet; (2) EtOH: EtOH liquid diet; (3) EK100_1X: EtOH liquid diet and 1 mg EK100 (Antrosterol)/Kg body weight (bw); (4) EK100_5X: EtOH liquid diet and 5 mg EK100/Kg bw; (5) EK100_10X: EtOH liquid diet and 10 mg EK100/Kg bw. At the end of experiment, the livers were collected for histo-pathological analyses, RNA and protein extraction, and enzymatic activities. Results Antrosterol reduced serum/liver lipids of alcohol-diet fed mice which highly related to upregulated fatty acid β-oxidation and downregulated lipogenesis, and increased fecal lipid/bile-acid outputs. Antrosterol enhanced hepatic antioxidant capabilities in alcohol-diet fed mice while it also lowered serum alcohol level, as well as increased alcohol dehydrogenase (ADH) and catalase (CAT) activities and decreased CYP2E1 protein expression in livers of alcohol-diet fed mice. Besides, antrosterol lowered hepatic inflammation and fibrosis related gene expressions, as well as serum AST/ALT values and TNF-α/IL-1β contents in alcohol-diet fed mice. Conclusion Based on the results, hepatoprotection of antrosterol is mostly attributed to its regulations of lipid homeostasis, antioxidant capability, alcohol metabolism, and anti-inflammation.
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- 2016
47. Polymorphism and protein expression of MUTYH gene for risk of rheumatoid arthritis
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Yu Chuen Huang, Sui-Foon Lo, Shih Yin Chen, Shih Ping Liu, Fuu Jen Tsai, Hui-Wen Lin, Yuan Yen Chang, Hsin-Han Chen, Ying Ju Lin, and Chung-Ming Huang
- Subjects
Male ,medicine.medical_specialty ,Pathology ,MUTYH ,Population ,Gene Expression ,Single-nucleotide polymorphism ,Pilot Projects ,Gastroenterology ,Polymorphism, Single Nucleotide ,DNA Glycosylases ,Arthritis, Rheumatoid ,Cohort Studies ,03 medical and health sciences ,0302 clinical medicine ,Rheumatology ,Risk Factors ,Internal medicine ,medicine ,SNP ,Humans ,Orthopedics and Sports Medicine ,Genetic Predisposition to Disease ,education ,030203 arthritis & rheumatology ,CNVs ,education.field_of_study ,business.industry ,medicine.disease ,Genotype frequency ,Oxidative DNA damage. DAS28 ,030220 oncology & carcinogenesis ,Rheumatoid arthritis ,Female ,business ,RA ,Cohort study ,Research Article ,SNPs - Abstract
Background We have previously described the association between rheumatoid arthritis (RA) prevalence and the two mutY Homolog (E. coli) (MUTYH) SNPs (rs3219463 and rs3219476) among the Taiwanese population. This present study will aim to elucidate whether the SNPs can alter the expression of EGFR in the progression of RA. Methods The cohort study included 368 Taiwan’s Han Chinese RA patients and 364 healthy controls. Blood samples collected from the participants were analyzed to determine their serum MUTYH levels and to identify rs3219463 SNP of MUTYH from their genomic DNA. Results Our data resulted in a statistically significant difference in genotype frequency distributions at rs3219463 for RA patients and controls (p
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- 2016
48. Caffeate derivatives induce apoptosis in COLO 205 human colorectal carcinoma cells through Fas- and mitochondria-mediated pathways
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Yueh-Hsiung Kuo, Wei-Tang Chang, Chin-Lin Hsu, Dev-Aur Chou, Ming-Shiou Jan, His-Lin Chiu, Yi-Chen Chen, and Yuan-Yen Chang
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medicine.diagnostic_test ,Chemistry ,Poly ADP ribose polymerase ,General Medicine ,Mitochondrion ,Molecular biology ,Fas ligand ,Analytical Chemistry ,Western blot ,Apoptosis ,Flip ,medicine ,MTT assay ,Polyacrylamide gel electrophoresis ,Food Science - Abstract
The objective of this study was to investigate the anticancer activity of caffeate derivatives in human cancer cells. Our results demonstrate that caffeate derivatives decreased the population growth of COLO 205, assessed using the MTT assay. However, caffeate derivatives, at the concentrations used in this study (0–250 μM) did not affect the viability of HepG2, Huh7, PLC5, and SK-Hep-1 cells. Flow cytometric analysis of COLO 205 cells exposed to decyl caffeate showed that the number of apoptotic cells increased in a time- and dose-dependent manner. Western blot analysis revealed that decyl caffeate stimulated an increase in protein expression levels of p53, Fas, FasL, AIF, and Apaf-1. Additionally, treatment with decyl caffeate changed the expression levels of Bcl-2 family members and subsequently induced the activation of caspase-12, caspase-9, and caspase-3, which was followed by cleavage of PARP. Our findings highlight the chemopreventive potential of decyl caffeate.
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- 2012
49. Polyphenol-rich longan (Dimocarpus longan Lour.)-flower-water-extract attenuates nonalcoholic fatty liver via decreasing lipid peroxidation and downregulating matrix metalloproteinases-2 and -9
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Ming Hsu Chang, Yuan Yen Chang, Meiling Wang, Yi-Chen Chen, Deng Jye Yang, Jung-Kai Tseng, Cheng Wei Liu, and Chin Lin Hsu
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chemistry.chemical_classification ,Dimocarpus ,biology ,Flavonoid ,Fatty liver ,Glutathione ,Phenolic acid ,medicine.disease ,biology.organism_classification ,Lipid peroxidation ,chemistry.chemical_compound ,chemistry ,Biochemistry ,Polyphenol ,medicine ,Food science ,Gentisic acid ,Food Science - Abstract
Longan-flower-water-extract (LFWE) contains large amounts of phytochemicals where gentisic acid and epicatechin are the major compounds in phenolic acid and flavonoid compound, respectively. The objective of this study was to investigate if drinking LFWE could protect the liver from a hypercaloric dietary habit. Only rats fed the hypercaloric diet (HCD) with 25 g/L (w/v) LFWE solution (HCD_2X) group demonstrated lower (p
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- 2012
50. Lychee flower extract inhibits proliferation and viral replication of HSV-1-infected corneal epithelial cells
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Chang-Min, Hsu, Samuel Tung-Hsing, Chiang, Yuan-Yen, Chang, Yi-Chen, Chen, Deng-Jye, Yang, Ya-Yu, Chen, Hui-Wen, Lin, and Jung-Kai, Tseng
- Subjects
Cell Survival ,Plant Extracts ,viruses ,TOR Serine-Threonine Kinases ,Blotting, Western ,Anti-Inflammatory Agents ,Epithelium, Corneal ,Ribosomal Protein S6 Kinases, 70-kDa ,Cell Count ,Flowers ,Herpesvirus 1, Human ,Virus Replication ,Antioxidants ,Litchi ,Animals ,Rabbits ,Phosphorylation ,Biomarkers ,Cells, Cultured ,Cell Proliferation ,Research Article - Abstract
Purpose Herpes simplex virus type I (HSV-1) is capable of causing a wide array of human ocular diseases. Herpes simplex virus keratitis (HSK)-induced cytopathogenicity together with the chronic immune-inflammatory reaction can trigger stromal scarring, thinning, and neovascularization which may lead to permanent vision impairment. Lychee flower extract (LFE) is known for its antioxidant and anti-inflammatory effects. Therefore, in this study, we investigated the mechanism of the Statens Seruminstitut rabbit corneal (SIRC) epithelial cells infected by HSV-1 and examined the antiviral capabilities of LFE. Methods SIRC cells were pretreated with different concentrations of LFE (0.2, 0.1, and 0.05 μg/ml) and then infected with 1 MOI of HSV-1 for 24 h. The cell viability or morphology was evaluated in this study. In addition, the supernatants and cell extracts were collected for Cell Counting Kit-8 (CCK), plaque assay, and western blotting. Results We found that HSV-1-induced cell proliferation is regulated through inhibition of the mammalian target of rapamycin (mTOR) and p70s6k phosphorylation in response to the LFE. In addition, the LFE enhanced the autophagy protein expression (Beclin-1 and light chain 3, LC3) and decreased the viral titers. Conclusions These results showed the antiviral capabilities and the protective effects of LFE. Taken together, our data indicate that LFE has potential as an anti-HSK (herpes simplex keratitis) for HSV-1 infection.
- Published
- 2015
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