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Li BL, Zhao DY, Du PL, Wang XT, Yang Q, Cai YR. Luteolin alleviates ulcerative colitis through SHP-1/STAT3 pathway. Inflamm Res 2021; 70:705-717. [PMID: 34014331 DOI: 10.1007/s00011-021-01468-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 04/23/2021] [Accepted: 05/03/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Previous studies have demonstrated that Luteolin has a positive effect on epithelial barrier integrity by promoting the function of tight protein, however, little is known about the underline mechanism of Luteolin. In this study, we constructed Caco-2 cell monolayer to explore the effects and the regulation mechanism of Luteolin in intestinal epithelial barrier integrity. METHODS Caco-2 cells were co-treated with TNF-α, Interferon-γ (IFN-γ) and Luteolin for 24 h. Overexpression or knockdown of SHP-1 was applied to study the effects of protein phosphoserine phosphatase-1 (SHP-1) on epithelial barrier integrity. Cell viability was tested by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Barrier function was detected by trans-epithelial electrical resistance (TEER) and FITC-dextran assay. The expression levels of SHP-1, phosphorylation signal transducer and activator of transcription 3 (p-STAT3), STAT3 and tight junction proteins were measured by qRT-PCR or western blot. In vivo model of ulcerative colitis was established to detect the function of Luteolin in ulcerative colitis. RESULTS We clarified that Luteolin protected intestinal epithelial barrier function of Caco-2 monolayers by increasing the resistance values and tight junction (TJ) protein expression. The expression of OCLN, CLDN1, and ZO1 was increased by Luteolin, while the expression of CLDN2 was decreased. Furthermore, Luteolin significantly alleviated the symptom of ulcerative colitis in DSS-induced mice. The in vitro cell model proved that overexpression of SHP-1 promotes the epithelial barrier function and knockdown of SHP-1 or STAT3 activation destroyed the protective effects of Luteolin on the expression of TJ proteins. CONCLUSION We found that the treatment of Luteolin promoted epithelial barrier function and Luteolin might preserve intestinal epithelial barrier function through suppression of STAT3 signaling pathway by SHP-1.
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Affiliation(s)
- Bo-Lin Li
- Department of Gastroenterology, Hebei Provincial Hospital of Chinese Medicine, No. 389, Zhongshan East Road, Chang an District, Shijiazhuang, 050011, Hebei, People's Republic of China
| | - Dan-Yang Zhao
- Department of Gastroenterology, Hebei Provincial Hospital of Chinese Medicine, No. 389, Zhongshan East Road, Chang an District, Shijiazhuang, 050011, Hebei, People's Republic of China
| | - Peng-Li Du
- Department of Gastroenterology, Hebei Provincial Hospital of Chinese Medicine, No. 389, Zhongshan East Road, Chang an District, Shijiazhuang, 050011, Hebei, People's Republic of China
| | - Xiao-Tian Wang
- Department of Gastroenterology, Hebei Provincial Hospital of Chinese Medicine, No. 389, Zhongshan East Road, Chang an District, Shijiazhuang, 050011, Hebei, People's Republic of China
| | - Qian Yang
- Department of Gastroenterology, Hebei Provincial Hospital of Chinese Medicine, No. 389, Zhongshan East Road, Chang an District, Shijiazhuang, 050011, Hebei, People's Republic of China.
| | - Yan-Ru Cai
- Department of Gastroenterology, Hebei Provincial Hospital of Chinese Medicine, No. 389, Zhongshan East Road, Chang an District, Shijiazhuang, 050011, Hebei, People's Republic of China.
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Lee MN, Lee Y, Wu D, Pae M. Luteolin inhibits NLRP3 inflammasome activation via blocking ASC oligomerization. J Nutr Biochem 2021; 92:108614. [PMID: 33705947 DOI: 10.1016/j.jnutbio.2021.108614] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 11/26/2020] [Accepted: 02/02/2021] [Indexed: 01/12/2023]
Abstract
The NLRP3 inflammasome is a caspase-1 containing multi-protein complex that controls the release of IL-1β and plays important roles in the innate immune response. Since NLRP3 inflammasome is implicated in the pathogenesis of a variety of diseases, it has become an increasingly interested target in developing therapies for multiple diseases. We reported the current study to determine how luteolin, a natural phenolic compound found in many vegetables and medicinal herbs, would modulate NLRP3 inflammasome in both the in vivo and in vitro settings. First, we found that a high-fat diet upregulated mRNA expression of NLRP3 inflammasome components Asc and Casp1 in adipose tissue of ovariectomized mice, which were greatly reduced by dietary supplementation with luteolin. Of note, Asc and Casp1 expression in adipose tissue correlated with mRNA levels of Adgre1 encoding F4/80, an established marker for mature macrophages. We also demonstrated that luteolin inhibited NLRP3 inflammasome-derived caspase-1 activation and IL-1β secretion in J774A.1 macrophages upon diverse stimuli including ATP, nigericin, or silica crystals. Luteolin inhibited the activation step of NLRP3 inflammasome by interfering with ASC oligomerization. Taken together, these findings suggest that luteolin supplementation may suppress NLRP3 induction and activation process and thus potentially would be protective against NLRP3-mediated inflammatory diseases.
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Affiliation(s)
- Mi Nam Lee
- Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Youngyoon Lee
- Department of Food and Nutrition, Chungbuk National University, Chundae-ro 1, Seowon-gu, Cheongju, Republic of Korea
| | - Dayong Wu
- Nutritional Immunology Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, Massachusetts, USA
| | - Munkyong Pae
- Department of Food and Nutrition, Chungbuk National University, Chundae-ro 1, Seowon-gu, Cheongju, Republic of Korea.
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Sun WL, Yang JW, Dou HY, Li GQ, Li XY, Shen L, Ji HF. Anti-inflammatory effect of luteolin is related to the changes in the gut microbiota and contributes to preventing the progression from simple steatosis to nonalcoholic steatohepatitis. Bioorg Chem 2021; 112:104966. [PMID: 33991837 DOI: 10.1016/j.bioorg.2021.104966] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Revised: 04/28/2021] [Accepted: 04/30/2021] [Indexed: 12/18/2022]
Abstract
Increasing intestinal barrier function is one of the basic methods to suppress inflammation in the progression from simple steatosis (SS) to nonalcoholic steatohepatitis (NASH). Luteolin exists widely in vegetables, fruits and natural herbs and has various biological activities, including benefits on nonalcoholic fatty liver disease (NAFLD). However, its regulatory effects on the gut microbiota and involvement in its biological activities remain to be investigated. We fed rats a high-fat diet containing 0.5% luteolin for 12 weeks and determined the effects of luteolin on lipid metabolism, inflammation, and the gut microbiota. Supplementation with luteolin for 12 weeks significantly reduced blood lipids and hepatic lipid levels and improved liver fat accumulation and inflammation. Moreover, supplementation with luteolin led to the significant enrichment of more than 10% of gut bacterial species, which contributed to increase the abundance of ZO-1, reduce intestinal permeability, reduce plasma lipopolysaccharide, and inhibit the TLR4/NF-κB pathway. In summary, the anti-inflammatory effect of luteolin might be related to changes in the gut microbiota and contribute to preventing the progression from SS to NASH. Our research provides new insights into the anti-inflammatory mechanism of luteolin and supports its use as a dietary supplement for NAFLD patients.
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Affiliation(s)
- Wen-Long Sun
- Institute of Biomedical Research, Shandong University of Technology, Zibo, Shandong, People's Republic of China; Shandong Provincial Research Center for Bioinformatic Engineering and Technique, Zibo Key Laboratory of New Drug Development of Neurodegenerative Diseases, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, People's Republic of China
| | - Jing-Wen Yang
- Institute of Biomedical Research, Shandong University of Technology, Zibo, Shandong, People's Republic of China; Shandong Provincial Research Center for Bioinformatic Engineering and Technique, Zibo Key Laboratory of New Drug Development of Neurodegenerative Diseases, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, People's Republic of China
| | - Hao-Yue Dou
- Institute of Biomedical Research, Shandong University of Technology, Zibo, Shandong, People's Republic of China; Shandong Provincial Research Center for Bioinformatic Engineering and Technique, Zibo Key Laboratory of New Drug Development of Neurodegenerative Diseases, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, People's Republic of China
| | - Gu-Qing Li
- Institute of Biomedical Research, Shandong University of Technology, Zibo, Shandong, People's Republic of China; Shandong Provincial Research Center for Bioinformatic Engineering and Technique, Zibo Key Laboratory of New Drug Development of Neurodegenerative Diseases, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, People's Republic of China
| | - Xin-Yu Li
- Institute of Biomedical Research, Shandong University of Technology, Zibo, Shandong, People's Republic of China; Shandong Provincial Research Center for Bioinformatic Engineering and Technique, Zibo Key Laboratory of New Drug Development of Neurodegenerative Diseases, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, People's Republic of China
| | - Liang Shen
- Institute of Biomedical Research, Shandong University of Technology, Zibo, Shandong, People's Republic of China; Shandong Provincial Research Center for Bioinformatic Engineering and Technique, Zibo Key Laboratory of New Drug Development of Neurodegenerative Diseases, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, People's Republic of China.
| | - Hong-Fang Ji
- Institute of Biomedical Research, Shandong University of Technology, Zibo, Shandong, People's Republic of China; Shandong Provincial Research Center for Bioinformatic Engineering and Technique, Zibo Key Laboratory of New Drug Development of Neurodegenerative Diseases, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, People's Republic of China.
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Hong X, Ajat M, Fakurazi S, Noor AM, Ismail IS. Anti-inflammatory evaluation of Scurrula ferruginea (jack) danser parasitizing on Tecoma stans (L.) H.B.K. in LPS/IFN-γ-induced RAW 264.7 macrophages. JOURNAL OF ETHNOPHARMACOLOGY 2021; 268:113647. [PMID: 33271242 DOI: 10.1016/j.jep.2020.113647] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 11/20/2020] [Accepted: 11/25/2020] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Scurrula ferruginea (Jack) Danser (locally known as 'Dedalu' or 'dian nan ji sheng' in Malaysia and China) is a hemi-parasitic shrub that is widely used as herbal medicine to treat inflammation, rheumatism, and stroke. However, the scientific basis of its anti-inflammatory function and mechanism remain to be proven. AIM OF THE STUDY To evaluate the anti-inflammatory activity as well as the preliminary mechanism of S. ferruginea parasitizing on Tecoma stans. MATERIALS AND METHODS The anti-inflammatory capability of freeze-dried stem aqueous extract was assessed via inhibition of inflammatory cytokines interleukin- (IL-) 1β, IL-6, IL-10, and tumor necrosis factor-alpha (TNF-α) production in lipopolysaccharide (LPS) and interferon-γ (IFN-γ) stimulated RAW 264.7 macrophages. The underlying anti-inflammatory mechanism was deciphered through reverse transcriptase and real time quantitative polymerase chain reactions (RT-PCR and qPCR) for inducible NO synthase (iNOS), cyclooxygenase-2 (COX-2), IL-1β, and TNF-α mRNA expression. RESULTS The results exhibited that aqueous extract of freeze-dried S. ferruginea stem sample concentration-dependently inhibited IL-1β protein production along with the down regulation of iNOS and IL-1β mRNA expression. Moreover, it significantly suppressed the protein release of IL-6 and IL-10 in a concentration-dependent manner. However, it slightly reduced TNF-α at higher sample concentration (250 μg/mL) without affecting the mRNA expression levels of COX-2 and TNF-α. CONCLUSIONS This study suggests that S. ferruginea parasitizing on Tecoma stans exerted anti-inflammatory capability attributed to inhibition of iNOS and IL-1β mRNA expression, NO creation, IL-1β, IL-6, IL-10, and TNF-α protein production, indicating this plant might be a useful plant-derived candidate against inflammation.
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Affiliation(s)
- Xia Hong
- Laboratory of Natural Products, Institute of Bioscience, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Hebei Key Laboratory of Research and Development for Traditional Chinese Medicine, Chengde Medical University, 067000, Chengde, Hebei, PR China
| | - Mokrish Ajat
- Department of Veterinary Pre-Clinical Science, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
| | - Sharida Fakurazi
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Akmal Mohd Noor
- Department of Veterinary Pre-Clinical Science, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Intan Safinar Ismail
- Laboratory of Natural Products, Institute of Bioscience, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
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Li B, Du P, Du Y, Zhao D, Cai Y, Yang Q, Guo Z. Luteolin alleviates inflammation and modulates gut microbiota in ulcerative colitis rats. Life Sci 2021; 269:119008. [PMID: 33434535 DOI: 10.1016/j.lfs.2020.119008] [Citation(s) in RCA: 87] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/21/2020] [Accepted: 12/28/2020] [Indexed: 02/07/2023]
Abstract
Ulcerative colitis (UC) is a chronic inflammatory bowel disease related to intestinal dysbiosis. Luteolin has been reported to reduce inflammation. However, it remains unclear whether luteolin ameliorates UC and regulates gut microbiota. In this study, we investigated the effects of luteolin on colonic structure and inflammation of dextran sulfate sodium (DSS)-induced rats using hematoxylin-eosin staining, immunohistochemistry and enzyme-linked immunosorbent assay and evaluated the effects of luteolin on gut microbiota using 16S rDNA sequencing. We found that luteolin treatment significantly reduced colonic damage, and inhibited colonic inflammation in UC rats, evidenced by the decreased levels of NF-κB, IL-17 and IL-23 in UC rats and the increased level of PPAR-γ. In addition, the 16S rDNA sequencing analysis revealed that luteolin treatment could alter diversity and composition of gut microbiota in UC rats. Lactobacillus, Bacteroides, Roseburia and Butyricicoccus were dominant genera in the luteolin group. Luteolin treatment reduced DSS-induced increased ratios of Lactobacillus and Prevotella_9. Furthermore, KEGG analysis revealed that gut microbiota was mainly related to DNA repair and recombination proteins, ribosome, purine metabolism, peptidases, and pyrimidine metabolism. In conclusion, our results revealed that luteolin could alleviate DSS-induced colitis in rats, and gut microbiota had the potential to serve as promising biomarkers for uncovering the mechanism by which luteolin improved UC.
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Affiliation(s)
- Bolin Li
- Department of Gastroenterology, Hebei Provincial Hospital of Chinese Medicine, Shijiazhuang, Hebei, China
| | - Pengli Du
- Department of Gastroenterology, Hebei Provincial Hospital of Chinese Medicine, Shijiazhuang, Hebei, China
| | - Yao Du
- Department of Gastroenterology, Hebei Provincial Hospital of Chinese Medicine, Shijiazhuang, Hebei, China
| | - Danyang Zhao
- Department of Gastroenterology, Hebei Provincial Hospital of Chinese Medicine, Shijiazhuang, Hebei, China
| | - Yanru Cai
- Department of Gastroenterology, Hebei Provincial Hospital of Chinese Medicine, Shijiazhuang, Hebei, China
| | - Qian Yang
- Department of Gastroenterology, Hebei Provincial Hospital of Chinese Medicine, Shijiazhuang, Hebei, China.
| | - Zijing Guo
- Department of Hematology, Hebei Provincial Hospital of Chinese Medicine, Shijiazhuang, Hebei, China.
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El-Sharawy DM, Khater SI, H.M E, Sherif NH, Hassan HM, Elmaidomy AH. 99mTc-Luteolin: Radiolabeling, In Silico ADMET and Biological Evaluation as a Natural Tracer Tumor imaging. JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 2021. [DOI: 10.1080/16878507.2021.1881400] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Dina M. El-Sharawy
- Labeled Compounds Department, Hot Lab. Center, Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt
- Cyclotron Project, Nuclear Research Centre, Cairo, Egypt
- Departement of Pharmaceutics and Clinical Pharmacy, Faculty of Pharmacy, Nahda University (NUB), Beni-Sweif, Egypt
| | - S. I. Khater
- Cyclotron Project, Nuclear Research Centre, Cairo, Egypt
- Radioactive Isotopes and Generators Department, Hot Lab. Center, Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt
| | - Essam H.M
- Cyclotron Project, Nuclear Research Centre, Cairo, Egypt
- Biology Department, Nuclear Research Center, Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt
| | - Noheir H. Sherif
- Drug Radiation Research Department, National Center for Radiation Research and Technology Atomic Energy Authority, Egypt
- Department of Pharmacognosy, Faculty of Pharmacy, Nahda University, Beni-Suef, Egypt
| | - Hossam M. Hassan
- Department of Pharmacognosy, Faculty of Pharmacy, Nahda University, Beni-Suef, Egypt
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt
| | - Abeer H. Elmaidomy
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt
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Antioxidant and Anti-Inflammatory Potential of Polyphenols Contained in Mediterranean Diet in Obesity: Molecular Mechanisms. Molecules 2021; 26:molecules26040985. [PMID: 33673390 PMCID: PMC7918790 DOI: 10.3390/molecules26040985] [Citation(s) in RCA: 116] [Impact Index Per Article: 38.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 02/03/2021] [Accepted: 02/09/2021] [Indexed: 01/02/2023] Open
Abstract
Nutrition transition can be defined as shifts in food habits, and it is characterized by high-fat (chiefly saturated animal fat), hypercaloric and salty food consumption at the expense of dietary fibers, minerals and vitamins. Western dietary patterns serve as a model for studying the impact of nutrition transition on civilization diseases, such as obesity, which is commonly associated with oxidative stress and inflammation. In fact, reactive oxygen species (ROS) overproduction can be associated with nuclear factor-κB (NF-κB)-mediated inflammation in obesity. NF-κB regulates gene expression of several oxidant-responsive adipokines including tumor necrosis factor-α (TNF-α). Moreover, AMP-activated protein kinase (AMPK), which plays a pivotal role in energy homeostasis and in modulation of metabolic inflammation, can be downregulated by IκB kinase (IKK)-dependent TNF-α activation. On the other hand, adherence to a Mediterranean-style diet is highly encouraged because of its healthy dietary pattern, which includes antioxidant nutraceuticals such as polyphenols. Indeed, hydroxycinnamic derivatives, quercetin, resveratrol, oleuropein and hydroxytyrosol, which are well known for their antioxidant and anti-inflammatory activities, exert anti-obesity proprieties. In this review, we highlight the impact of the most common polyphenols from Mediterranean foods on molecular mechanisms that mediate obesity-related oxidative stress and inflammation. Hence, we discuss the effects of these polyphenols on a number of signaling pathways. We note that Mediterranean diet (MedDiet) dietary polyphenols can de-regulate nicotinamide adenine dinucleotide phosphate (NADPH) oxidase (NOX) and NF-κB-mediated oxidative stress, and metabolic inflammation. MedDiet polyphenols are also effective in upregulating downstream effectors of several proteins, chiefly AMPK.
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Liu XB, Liu F, Liang YY, Yin G, Zhang HJ, Mi XS, Zhang ZJ, So KF, Li A, Xu Y. Luteolin delays photoreceptor degeneration in a mouse model of retinitis pigmentosa. Neural Regen Res 2021; 16:2109-2120. [PMID: 33642401 PMCID: PMC8343326 DOI: 10.4103/1673-5374.303537] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Luteolin is neuroprotective for retinal ganglion cells and retinal pigment epithelial cells after oxidative injury, whereby it can inhibit microglial neurotoxicity. Therefore, luteolin holds the potential to be useful for treatment of retinal diseases. The purpose of this study was to investigate whether luteolin exhibits neuroprotective effects on rod cells in rd10 mice, a slow photoreceptor-degenerative model of retinitis pigmentosa. Luteolin (100 mg/kg) intraperitoneally injected daily from postnatal day 14 (P14) to P25 significantly enhanced the visual performance and retinal light responses of rd10 mice at P25. Moreover, it increased the survival of photoreceptors and improved retinal structure. Mechanistically, luteolin treatment attenuated increases in reactive oxygen species, photoreceptor apoptosis, and reactive gliosis; increased mRNA levels of anti-inflammatory cytokines while lowering that of pro-inflammatory and chemoattractant cytokines; and lowered the ratio of phospho-JNK/JNK. Application of the JNK inhibitor SP600125 exerted a similar protective effect to luteolin, suggesting that luteolin delays photoreceptor degeneration and functional deterioration in rd10 mice through regulation of retinal oxidation and inflammation by inhibiting the JNK pathway. Therefore, luteolin may be useful as a supplementary treatment for retinitis pigmentosa. This study was approved by the Qualified Ethics Committee of Jinan University, China (approval No. IACUC-20181217-02) on December 17, 2018.
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Affiliation(s)
- Xiao-Bin Liu
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Ministry of Education CNS Regeneration Collaborative Joint Laboratory, Jinan University, Guangzhou, Guangdong Province, China
| | - Feng Liu
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Ministry of Education CNS Regeneration Collaborative Joint Laboratory, Jinan University, Guangzhou, Guangdong Province, China
| | - Yi-Yao Liang
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Ministry of Education CNS Regeneration Collaborative Joint Laboratory, Jinan University, Guangzhou, Guangdong Province, China
| | - Gang Yin
- Institute of New Drug Research and Guangzhou Key Laboratory of Innovative Chemical Drug Research in Cardio-cerebrovascular Diseases, Jinan University, Guangzhou, Guangdong Province, China
| | - Hui-Jun Zhang
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Xue-Song Mi
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Zai-Jun Zhang
- Institute of New Drug Research and Guangzhou Key Laboratory of Innovative Chemical Drug Research in Cardio-cerebrovascular Diseases, Jinan University, Guangzhou, Guangdong Province, China
| | - Kwok-Fai So
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Ministry of Education CNS Regeneration Collaborative Joint Laboratory, Jinan University; Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, Guangdong Province; Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China
| | - Ang Li
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Ministry of Education CNS Regeneration Collaborative Joint Laboratory, Jinan University; Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, Guangdong Province, China
| | - Ying Xu
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Ministry of Education CNS Regeneration Collaborative Joint Laboratory, Jinan University, Guangzhou, Guangdong Province; Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China
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Khalil A, Tazeddinova D. The upshot of Polyphenolic compounds on immunity amid COVID-19 pandemic and other emerging communicable diseases: An appraisal. NATURAL PRODUCTS AND BIOPROSPECTING 2020; 10:411-429. [PMID: 33057955 PMCID: PMC7558243 DOI: 10.1007/s13659-020-00271-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 10/06/2020] [Indexed: 05/15/2023]
Abstract
Polyphenols are a large family of more than 10,000 naturally occurring compounds, which exert countless pharmacological, biological and physiological benefits for human health including several chronic diseases such as cancer, diabetes, cardiovascular, and neurological diseases. Their role in traditional medicine, such as the use of a wide range of remedial herbs (thyme, oregano, rosemary, sage, mint, basil), has been well and long known for treating common respiratory problems and cold infections. This review reports on the most highlighted polyphenolic compounds present in up to date literature and their specific antiviral perceptive properties that might enhance the body immunity facing COVID-19, and other viral infectious diseases. In fact, several studies and clinical trials increasingly proved the role of polyphenols in controlling numerous human pathogens including SARS and MERS, which are quite similar to COVID-19 through the enhancement of host immune response against viral infections by different biological mechanisms. Thus, polyphenols ought to be considered as a potential and valuable source for designing new drugs that could be used effectively in the combat against COVID-19 and other rigorous diseases.
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Affiliation(s)
- Ayman Khalil
- Department of Food Technology, South Ural State University, Chelyabinsk, Russian Federation
| | - Diana Tazeddinova
- Department of Food Technology, South Ural State University, Chelyabinsk, Russian Federation
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Banerjee A, Das D, Paul R, Roy S, Das U, Saha S, Dey S, Adhikary A, Mukherjee S, Maji BK. Mechanistic study of attenuation of monosodium glutamate mixed high lipid diet induced systemic damage in rats by Coccinia grandis. Sci Rep 2020; 10:15443. [PMID: 32963259 PMCID: PMC7508805 DOI: 10.1038/s41598-020-72076-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 08/25/2020] [Indexed: 12/20/2022] Open
Abstract
In the context of failure of treatment for non alcoholic fatty liver disease (NAFLD)-mediated systemic damages, recognition of novel and successful characteristic drug to combat these anomalous situations is earnestly required. The present study is aimed to evaluate protective value of ethanol extract of Coccinia grandis leaves (EECGL), naturally occurring medicinal plant, on NAFLD-mediated systemic damage induced by high lipid diet along with monosodium glutamate (HM)-fed rats. Our study uncovered that EECGL significantly ameliorates HM-induced hyperlipidemia, increased lipogenesis and metabolic disturbances (via up regulation of PPAR-α and PPAR-γ), oxidative stress (via reducing the generation of reactive oxygen species and regulating the redox-homeostasis) and inflammatory response (via regulating the pro-inflammatory and anti-inflammatory factors with concomitant down regulation of NF-kB, iNOS, TNF-α and up regulation of eNOS). Furthermore, EECGL significantly inhibited HM-induced increased population of cells in sub G0/G1 phase, decreased Bcl2 expression and thereby loss of mitochondrial membrane potential with over expression of Bax, p53, p21, activation of caspase 3 and 9 indicated the apoptosis and suppression of cell survival. It is perhaps the first comprehensive study with a mechanistic approach which provides a strong unique strategy for the management of HM-induced systemic damage with effective dose of EECGL.
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Affiliation(s)
- Arnab Banerjee
- Department of Physiology (UG & PG), Serampore College, 9 William Carey Road, Serampore, Hooghly-712201, West Bengal, India
| | - Debasmita Das
- Department of Physiology (UG & PG), Serampore College, 9 William Carey Road, Serampore, Hooghly-712201, West Bengal, India
| | - Rajarshi Paul
- Department of Physiology (UG & PG), Serampore College, 9 William Carey Road, Serampore, Hooghly-712201, West Bengal, India
| | - Sandipan Roy
- Department of Physiology (UG & PG), Serampore College, 9 William Carey Road, Serampore, Hooghly-712201, West Bengal, India
| | - Ujjal Das
- Department of Physiology, University College of Science, Technology and Agriculture, University of Calcutta, 92 Acharya Prafulla Chandra Road, Kolkata-700009, West Bengal, India
| | - Samrat Saha
- Department of Physiology, University College of Science, Technology and Agriculture, University of Calcutta, 92 Acharya Prafulla Chandra Road, Kolkata-700009, West Bengal, India
| | - Sanjit Dey
- Department of Physiology, University College of Science, Technology and Agriculture, University of Calcutta, 92 Acharya Prafulla Chandra Road, Kolkata-700009, West Bengal, India
| | - Arghya Adhikary
- Centre for Research in Nanoscience and Nanotechnology, Acharya Prafulla Chandra Roy Sikhsha Prangan, University of Calcutta, JD-2, Sector-III, Saltlake City, Kolkata-700098, West Bengal, India
| | - Sandip Mukherjee
- Department of Physiology (UG & PG), Serampore College, 9 William Carey Road, Serampore, Hooghly-712201, West Bengal, India
| | - Bithin Kumar Maji
- Department of Physiology (UG & PG), Serampore College, 9 William Carey Road, Serampore, Hooghly-712201, West Bengal, India.
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The effect of grape products containing polyphenols on C-reactive protein levels: a systematic review and meta-analysis of randomised controlled trials. Br J Nutr 2020; 125:1230-1245. [DOI: 10.1017/s0007114520003591] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Polyphenols and Other Bioactive Compounds of Sideritis Plants and Their Potential Biological Activity. Molecules 2020; 25:molecules25163763. [PMID: 32824863 PMCID: PMC7464829 DOI: 10.3390/molecules25163763] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 08/11/2020] [Accepted: 08/13/2020] [Indexed: 01/05/2023] Open
Abstract
Due to the growing problem of obesity associated with type 2 diabetes and cardiovascular diseases, causes of obesity are extensively investigated. In addition to a high caloric diet and low physical activity, gut microbiota disturbance may have a potential impact on excessive weight gain. Some reports indicate differences in the composition of the intestinal microflora of obese people in comparison to lean. Bioactive compounds of natural origin with beneficial and multifaceted effects on the body are more frequently used in prevention and treatment of many metabolic diseases including obesity. Sideritis scardica is traditionally consumed as mountain tea in the Balkans to strengthen the body and improve mood. Many reports indicate a positive effect on digestive system, weight loss, and prevention of insulin resistance. Additionally, it exhibits antioxidant activity and anti-inflammatory effects. The positive effect of Sideritis scardica extracts on memory and general cognitive abilities is indicated as well. The multilevel positive effect on the body appears to originate from the abundant occurrence of phenolic compounds, especially phenolic acids in Sideritis scardica extracts. However, mechanisms underlying their action require careful discussion and further research. Therefore, the objective of this review is to summarize the available knowledge on the role and mechanism of action of biologically active compounds of Sideritis scardica and other related species from the genus Sideritis.
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Habib ES, El-Bsoumy E, Ibrahim AK, Helal MA, El-Magd MA, Ahmed SA. Anti-inflammatory effect of methoxyflavonoids from Chiliadenus montanus ( Jasonia Montana) growing in Egypt. Nat Prod Res 2020; 35:5909-5913. [PMID: 32746641 DOI: 10.1080/14786419.2020.1802272] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Chiliadenus montanus is a medicinal plant that grows in Sinai Peninsula in Egypt. Phytochemical investigation of C. montanus methanolic extract led to the isolation of five methoxy flavonoids; Chrysosplenol-D (1), 5,7,4'-trihydroxy- 3,3'-dimethoxy flavone (2), 5,7-dihydroxy -3,3',4'-trimethoxyflavone (3), Bonanzin (4), 3,5,6,7,4'-pentamethoxy flavone (5), a sesquiterpene, Cryptomeridiol (6) and stigmast-5,22-dien-3-O-β-D-glucopyranoside (7). The anti-inflammatory activity of compounds 2 and 5 was assessed in vitro on CaCo2 cells stimulated by lipopolysaccharide (LPS). Both compounds downregulated LPS-induced expression of inflammatory cytokines; tumor necrosis factor alpha (TNFα), interleukin 1β (IL1β), nuclear factor kappa B (NFκB), cyclooxygenase 1 (Cox1), cyclooxygenase 2 (Cox2), and 5-lipoxygenase (5Lox). In vivo, both compounds significantly decreased paw edema thickness in rats relative to carrageenan, showing better anti-inflammatory activity than celecoxib (36.98%) after 1 h (46.60% and 48.11%, respectively). An in silico study was performed, where both compounds were docked into the active site of the crystal structure of the human Cox2 enzyme.
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Affiliation(s)
- Eman S Habib
- Department of Pharmacognosy, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt
| | - Eman El-Bsoumy
- Department of Pharmacognosy, College of Pharmacy, Arab Academy for Science, Technology and Maritime Transport, Alexandria, Egypt
| | - Amany K Ibrahim
- Department of Pharmacognosy, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt
| | - Mohamed A Helal
- Biomedical Sciences Program, University of Science and Technology, Zewail City of Science and Technology, Giza, Egypt.,Department of Medicinal Chemistry, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt
| | - Mohammed A El-Magd
- Department of Anatomy, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafr el-Sheikh, Egypt
| | - Safwat A Ahmed
- Department of Pharmacognosy, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt
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Gao F, Tu X, Ma X, Xie Y, Zou J, Huang X, Qu F, Yu Y, Lu L. NiO@Ni-MOF nanoarrays modified Ti mesh as ultrasensitive electrochemical sensing platform for luteolin detection. Talanta 2020; 215:120891. [DOI: 10.1016/j.talanta.2020.120891] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 02/24/2020] [Accepted: 02/29/2020] [Indexed: 12/21/2022]
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Stroe AC, Oancea S. Immunostimulatory Potential of Natural Compounds and Extracts: A Review. CURRENT NUTRITION & FOOD SCIENCE 2020. [DOI: 10.2174/1573401315666190301154200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The proper functioning of human immune system is essential for organism survival
against infectious, toxic and oncogenic agents. The present study aimed to describe the scientific evidence
regarding the immunomodulatory properties of the main micronutrients and specific phytochemicals.
Plants of food interest have the ability to dynamically affect the immune system through
particular molecules. Plant species, type of compounds and biological effects were herein reviewed
mainly focusing on plants which are not commonly used in food supplements. Several efficient phytoproducts
showed significant advantages compared to synthetic immunomodulators, being good
candidates for the development of immunotherapeutic drugs.
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Affiliation(s)
- Andreea C. Stroe
- Department of Agricultural Sciences and Food Engineering, "Lucian Blaga" University of Sibiu, 7-9 Ion Ratiu Street, Sibiu 550012, Romania
| | - Simona Oancea
- Department of Agricultural Sciences and Food Engineering, "Lucian Blaga" University of Sibiu, 7-9 Ion Ratiu Street, Sibiu 550012, Romania
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Priya Dharshini LC, Vishnupriya S, Sakthivel KM, Rasmi RR. Oxidative stress responsive transcription factors in cellular signalling transduction mechanisms. Cell Signal 2020; 72:109670. [PMID: 32418887 DOI: 10.1016/j.cellsig.2020.109670] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/06/2020] [Accepted: 05/06/2020] [Indexed: 11/18/2022]
Abstract
Oxidative stress results from the imbalances in the development of reactive oxygen species (ROS) and antioxidants defence system resulting in tissue injury. A key issue resulting in the modulation of ROS is that it alters hosts molecular, structural and functional properties which is accomplished via various signalling pathways which either activate or inhibit numerous transcription factors (TFs). Some of the regulators include Nuclear erythroid-2 related factors (Nrf-2), CCAAT/enhancer-binding protein delta (CEBPD), Activator Protein-1 (AP-1), Hypoxia-inducible factor 1(HIF-1), Nuclear factor κB (NF-κB), Specificity Protein-1 (SP-1) and Forkhead Box class O (FoxO) transcription factors. The expression of these transcription factors are dependent upon the stress signal and are sometimes interlinked. They are highly specific having their own regulation cellular events. Depending upon the transcription factors and better knowledge on the type of the oxidative stress help researchers develop safe, novel targets which can serve as efficient therapeutic targets for several disease conditions.
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Affiliation(s)
| | - Selvaraj Vishnupriya
- Department of Biotechnology, PSG College of Arts & Science, Civil Aerodrome Post, Coimbatore, Tamil Nadu 641 014, India
| | - Kunnathur Murugesan Sakthivel
- Department of Biochemistry, PSG College of Arts & Science, Civil Aerodrome Post, Coimbatore, Tamil Nadu 641 014, India
| | - Rajan Radha Rasmi
- Department of Biotechnology, PSG College of Arts & Science, Civil Aerodrome Post, Coimbatore, Tamil Nadu 641 014, India.
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Luteolin-7-O-Glucoside Inhibits Oral Cancer Cell Migration and Invasion by Regulating Matrix Metalloproteinase-2 Expression and Extracellular Signal-Regulated Kinase Pathway. Biomolecules 2020; 10:biom10040502. [PMID: 32224968 PMCID: PMC7226481 DOI: 10.3390/biom10040502] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 03/23/2020] [Accepted: 03/23/2020] [Indexed: 12/14/2022] Open
Abstract
Oral squamous cell carcinoma is the sixth most common type of cancer globally, which is associated with high rates of cancer-related deaths. Metastasis to distant organs is the main reason behind worst prognostic outcome of oral cancer. In the present study, we aimed at evaluating the effects of a natural plant flavonoid, luteolin-7-O-glucoside, on oral cancer cell migration and invasion. The study findings showed that in addition to preventing cell proliferation, luteolin-7-O-glucoside caused a significant reduction in oral cancer cell migration and invasion. Mechanistically, luteolin-7-O-glucoside caused a reduction in cancer metastasis by reducing p38 phosphorylation and downregulating matrix metalloproteinase (MMP)-2 expression. Using a p38 inhibitor, SB203580, we proved that luteolin-7-O-glucoside exerts anti-migratory effects by suppressing p38-mediated increased expression of MMP-2. This is the first study to demonstrate the luteolin-7-O-glucoside inhibits cell migration and invasion by regulating MMP-2 expression and extracellular signal-regulated kinase pathway in human oral cancer cell. The study identifies luteolin-7-O-glucoside as a potential anti-cancer candidate that can be utilized clinically for improving oral cancer prognosis.
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Improvement of Testicular Steroidogenesis Using Flavonoids and Isoflavonoids for Prevention of Late-Onset Male Hypogonadism. Antioxidants (Basel) 2020; 9:antiox9030237. [PMID: 32183155 PMCID: PMC7139932 DOI: 10.3390/antiox9030237] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/09/2020] [Accepted: 03/10/2020] [Indexed: 12/11/2022] Open
Abstract
Androgen production, being important for male fertility, is mainly accomplished by the Leydig cells from the interstitial compartment of the testis. Testosterone plays a critical role in testis development, normal masculinization, and the maintenance of spermatogenesis. Within seminiferous tubules, appropriate Sertoli cell function is highly dependent on testicular androgen levels and is essential to initiate and maintain spermatogenesis. During aging, testosterone production by the testicular Leydig cells declines from the 30s in humans at a rate of 1% per year. This review outlines the recent findings regarding the use of flavonoids and isoflavonoids to improve testosterone production, contributing to normal spermatogenesis and preventing age-related degenerative diseases associated with testosterone deficiency. With the cumulation of information on the actions of different flavonoids and isoflavonoids on steroidogenesis in Leydig cells, we can now draw conclusions regarding the structure-activity relationship on androgen production. Indeed, flavonoids having a 5,7-dihydroxychromen-4-one backbone tend to increase the expression of the steroidogenic acute regulatory protein (StAR), being critical for the entry of cholesterol into the mitochondria, leading to increased testosterone production from testis Leydig cells. Therefore, flavonoids and isoflavonoids such as chrysin, apigenin, luteolin, quercetin, and daidzein may be effective in delaying the initiation of late-onset hypogonadism associated with aging in males.
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Wang H, Li Y, Wang S, Kong D, Sahu SK, Bai M, Li H, Li L, Xu Y, Liang H, Liu H, Wu H. Comparative transcriptomic analyses of chlorogenic acid and luteolosides biosynthesis pathways at different flowering stages of diploid and tetraploid Lonicera japonica. PeerJ 2020; 8:e8690. [PMID: 32185107 PMCID: PMC7061910 DOI: 10.7717/peerj.8690] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 02/05/2020] [Indexed: 01/20/2023] Open
Abstract
The Flos Lonicerae Japonicae (FLJ), Lonicera japonica Thunb, belonging to the Caprifoliaceae family, is an economically important plant that is highly utilized in traditional Chinese medicine as well as in Japanese medicine. The flowers of these plants are rich in chlorogenic acid (CGA) and luteoloside. Our previous study revealed that tetraploid L. japonica has higher fresh/dry weight, phenolic acids and flavonoids contents than those of diploid plants. However, why tetraploid L. japonica can yield higher CGA and luteolosides than that in diploid and what is the difference in the molecular regulatory mechanism of these pathways between diploid and tetraploids remained unclear. Therefore, in the present study, we performed comprehensive transcriptome analyses of different flowering stages of diploid and tetraploid L. japonica. The CGA content of tetraploid was found higher than that of diploid at all the growth stages. While the luteoloside content of diploid was higher than that of tetraploid at S4 and S6 growth stages. We obtained a high-quality transcriptome assembly (N50 = 2,055 bp; Average length = 1,331 bp) compared to earlier studies. Differential expression analysis revealed that several important genes involving in plant hormone signal transduction, carbon metabolism, starch/sucrose metabolism and plant-pathogen interaction were upregulated in tetraploid compared with the diploid L. japonica, reflecting the higher adaptability and resistance of tetraploid species. Furthermore, by associating the phenotypic data and gene expression profiles, we were able to characterize the potential molecular regulatory mechanism of important biosynthetic pathways at different flowering stages. Overall, our work provides a foundation for further research on these important secondary metabolite pathways and their implications in traditional Chinese/Japanese medicine.
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Affiliation(s)
- Hongli Wang
- BGI-Shenzhen, Shenzhen, Guangdong, China
- BGI Education Center, University of Chinese Academy of Sciences, Beijing, China
| | - Yanqun Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, Guangdong, China
| | - Sibo Wang
- BGI-Shenzhen, Shenzhen, Guangdong, China
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Dexin Kong
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, Guangdong, China
| | - Sunil Kumar Sahu
- BGI-Shenzhen, Shenzhen, Guangdong, China
- State Key Laboratory of Agricultural Genomics, BGI-Shenzhen, Shenzhen, Guangdong, China
| | - Mei Bai
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, Guangdong, China
| | - Haoyuan Li
- BGI-Shenzhen, Shenzhen, Guangdong, China
- China National GeneBank, BGI-Shenzhen, Shenzhen, Guangdong, China
| | - Linzhou Li
- BGI-Shenzhen, Shenzhen, Guangdong, China
- China National GeneBank, BGI-Shenzhen, Shenzhen, Guangdong, China
| | - Yan Xu
- BGI-Shenzhen, Shenzhen, Guangdong, China
- BGI Education Center, University of Chinese Academy of Sciences, Beijing, China
| | - Hongping Liang
- BGI-Shenzhen, Shenzhen, Guangdong, China
- BGI Education Center, University of Chinese Academy of Sciences, Beijing, China
| | - Huan Liu
- BGI-Shenzhen, Shenzhen, Guangdong, China
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
- State Key Laboratory of Agricultural Genomics, BGI-Shenzhen, Shenzhen, Guangdong, China
| | - Hong Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, Guangdong, China
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Wang J, Gao Y, Lin F, Han K, Wang X. Omentin-1 attenuates lipopolysaccharide (LPS)-induced U937 macrophages activation by inhibiting the TLR4/MyD88/NF-κB signaling. Arch Biochem Biophys 2019; 679:108187. [PMID: 31706880 DOI: 10.1016/j.abb.2019.108187] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 10/20/2019] [Accepted: 11/05/2019] [Indexed: 01/29/2023]
Abstract
Macrophages play a pivotal role in the defense response against harmful pathogens and stimuli by releasing various pro-inflammatory mediators. However, overproduction of pro-inflammatory mediators will do harm to the organism and cause inflammation-associated diseases. Omentin-1, which is a newly discovered adipokine, is specifically expressed in omental adipose tissue. Recent studies have found correlations between omentin-1 and insulin resistance, diabetes, obesity, inflammation, atherosclerosis, bone metabolism, and tumor cell proliferation. Some studies have shown that the association between omentin-1, insulin resistance, and inflammation might suggest that omentin-1 plays an important role in chronic inflammatory diseases. In this study, we found that omentin-1 inhibited LPS-induced expression of inflammatory mediators and pro-inflammatory cytokines in macrophages. Furthermore, omentin-1 inhibited activation of the NF-κB pathway by suppressing both nuclear p65 accumulation and transfected NFκB promoter activity. Importantly, omentin-1 increased nuclear translocation of Nrf2. Our findings demonstrate that omentin-1 exerts anti-inflammatory effects on LPS-induced macrophages and has potential implication in the treatment of inflammation-associated diseases.
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Affiliation(s)
- Jinzhong Wang
- Department of Critical Care Medicine, The Second Affiliated Hospital of Hainan Medical University, Haikou City, Hainan province, China
| | - Yi Gao
- Department of Infectious Disease, The Affiliated Hainan Hospital of Hainan Medical University, Haikou City, Hainan province, China
| | - Feng Lin
- Department of Infectious Disease, The Affiliated Hainan Hospital of Hainan Medical University, Haikou City, Hainan province, China
| | - Kui Han
- Department of Critical Care Medicine, The Second Affiliated Hospital of Hainan Medical University, Haikou City, Hainan province, China
| | - Xiaozhi Wang
- Department of Critical Care Medicine, The Second Affiliated Hospital of Hainan Medical University, Haikou City, Hainan province, China.
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Farcas AD, Mot AC, Zagrean-Tuza C, Ticolea M, Sevastre B, Kulak M, Silaghi-Dumitrescu R, Parvu A. Remarkable rutin-rich Hypericum capitatum extract exhibits anti-inflammatory effects on turpentine oil-induced inflammation in rats. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 19:289. [PMID: 31664997 PMCID: PMC6819352 DOI: 10.1186/s12906-019-2680-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 09/11/2019] [Indexed: 12/25/2022]
Abstract
BACKGROUND Natural extracts with beneficial biological activities are nowadays of high interest, in various treatment or prophylaxis. Hypericum capitatum has been known for its curative effects for centuries and its extracts have become of interest due to their distinct activity among other Hypericaceae members. In this study, further light is aimed to be shed on the secondary-metabolites composition of H. capitatum extracts, using chromatographic techniques and Electron paramagnetic resonance profiles in alkaline medium. Considering that no previous works explored the anti-inflammatory activity of H. capitatum, here, an in vivo study is also designed in order to evaluate this property by assessing the impact of one of H. capitatum extracts in ameliorating turpentine oil-induced inflammation on rats and to quantify their blood antioxidants level. METHODS Chromatographic techniques and Electron paramagnetic resonance spectroscopy were used in order to describe the chemical profile in different parts of the plant. The in vivo study on turpentine-oil induced inflammation in rats included three doses of H. capitatum extract expressed in rutin concentration. Oxidative stress was measured using total oxidative status, total antioxidant capacity, oxidative stress index, 3-nitrotyrosine, nitric oxide, malondialdehyde, superoxide dismutase, catalase and the inflammatory response was evaluated by performing a complete blood cells count and C reactive protein. RESULTS The extract was remarkably rich in rutin; however, other polyphenolic-like minor components appeared important in explaining the observed biological properties. The tested extract prevents the increase of inflammation-induced white blood cell count, number of neutrophils, and serum nitric oxide, and did so in a dose-dependent manner, similarly to the positive control-diclofenac. In addition, the same extract appeared to be a good alternative to diclofenac to restore total oxidative status, thiobarbituric active reactive species, total proteins and C reactive proteins. Moreover, antioxidant enzymes such as catalase, superoxide dismutase and total serum thiol concentration were significantly increased by the tested extract. CONCLUSIONS Due to its powerful reservoir rich in rutin, H. capitatum extract depicted its in vivo antioxidant and anti-inflammatory effects indicating it to be a good alternative to conventional drugs for oxidative stress protection.
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Affiliation(s)
- Anca D. Farcas
- Department of Biology, Faculty of Biology and Geology, Babeș-Bolyai University, RO-400028 Cluj-Napoca, Romania
- Department of Biomolecular Physics, National Institute for Research and Development of Isotopic and Molecular Technologies, RO-400293 Cluj-Napoca, Romania
| | - Augustin C. Mot
- Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeș-Bolyai University, RO-400028 Cluj-Napoca, Romania
| | - Cezara Zagrean-Tuza
- Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeș-Bolyai University, RO-400028 Cluj-Napoca, Romania
| | - Madalina Ticolea
- Department of Pathophysiology, Faculty of Medicine, “Iuliu Hațieganu” University of Pharmacy and Medicine, RO-400012 Cluj-Napoca, Romania
| | - Bogdan Sevastre
- Department of Pathophysiology, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, RO-400372 Cluj-Napoca, Romania
| | - Muhittin Kulak
- Department of Herbal and Animal Production, Vocational School of Technical Sciences, Igdir University, Igdir, Turkey
| | - Radu Silaghi-Dumitrescu
- Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeș-Bolyai University, RO-400028 Cluj-Napoca, Romania
| | - Alina Parvu
- Department of Pathophysiology, Faculty of Medicine, “Iuliu Hațieganu” University of Pharmacy and Medicine, RO-400012 Cluj-Napoca, Romania
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Lee KJ, Ko YJ, Kang SK, Kim WS, Cho CS, Choi YJ. Additive anti-inflammation by a combination of conjugated linoleic acid and α-lipoic acid through molecular interaction between both compounds. Food Sci Biotechnol 2019; 29:419-429. [PMID: 32257526 DOI: 10.1007/s10068-019-00677-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 08/22/2019] [Accepted: 09/04/2019] [Indexed: 02/08/2023] Open
Abstract
Alpha lipoic acid (LA) and conjugated linoleic acid (CLA) have been well-documented on a variety of functional effects in health foods. The main purpose of this study was focused on the additive anti-inflammatory activity of the combination of LA and CLA in vitro. Raw 264.7 cells induced by lipopolysaccharide were treated with LA and CLA individually or in combination at a variety of concentration ranges. Co-treating 25 μM of LA and 25 μM of CLA significantly inhibited pro-inflammatory cytokines compared to the same concentration of single LA- or CLA-treated group. The molecular mechanism of anti-inflammation by a combination of these compounds was attributed to extracellular signal-regulated kinase-1 (ERK1) and peroxisome proliferator-activated receptor gamma (PPARγ). Also, the molecular interaction between both compounds was confirmed by NMR. Our findings suggested that the combination of CLA and LA showed potential additive effect on anti-inflammation through the molecular interaction of both compounds.
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Affiliation(s)
- Ki-June Lee
- 1Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826 Republic of Korea
| | - Yoon-Joo Ko
- 2National Center for Inter-University Research Facilities, Seoul National University, Seoul, 08826 Republic of Korea
| | - Sang-Kee Kang
- 3Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang, Gangwon-do 25354 Republic of Korea
| | - Whee-Soo Kim
- 1Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826 Republic of Korea
| | - Chong-Su Cho
- 1Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826 Republic of Korea
| | - Yun-Jaie Choi
- 1Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826 Republic of Korea
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Peritore AF, Siracusa R, Crupi R, Cuzzocrea S. Therapeutic Efficacy of Palmitoylethanolamide and Its New Formulations in Synergy with Different Antioxidant Molecules Present in Diets. Nutrients 2019; 11:E2175. [PMID: 31514292 PMCID: PMC6769461 DOI: 10.3390/nu11092175] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 08/08/2019] [Accepted: 09/05/2019] [Indexed: 11/16/2022] Open
Abstract
The use of a complete nutritional approach seems increasingly promising to combat chronic inflammation. The choice of healthy sources of carbohydrates, fats, and proteins, associated with regular physical activity and avoidance of smoking is essential to fight the war against chronic diseases. At the base of the analgesic, anti-inflammatory, or antioxidant action of the diets, there are numerous molecules, among which some of a lipidic nature very active in the inflammatory pathway. One class of molecules found in diets with anti-inflammatory actions are ALIAmides. Among all, one is particularly known for its ability to counteract the inflammatory cascade, the Palmitoylethanolamide (PEA). PEA is a molecular that is present in nature, in numerous foods, and is endogenously produced by our body, which acts as a balancer of inflammatory processes, also known as endocannabionoid-like. PEA is often used in the treatment of both acute and chronic inflammatory pathologies, either alone or in association with other molecules with properties, such as antioxidants or analgesics. This review aims to illustrate an overview of the different diets that are involved in the process of opposition to the inflammatory cascade, focusing on capacity of PEA and new formulations in synergy with other molecules.
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Affiliation(s)
- Alessio Filippo Peritore
- Department of Chemical Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres 31, 98166 Messina, Italy
| | - Rosalba Siracusa
- Department of Chemical Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres 31, 98166 Messina, Italy
| | - Rosalia Crupi
- Department of Chemical Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres 31, 98166 Messina, Italy
| | - Salvatore Cuzzocrea
- Department of Chemical Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres 31, 98166 Messina, Italy.
- Department of Pharmacological and Physiological Sciences, Saint Louis University School of Medicine, St. Louis, MO 63104, USA.
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Anomalin attenuates LPS-induced acute lungs injury through inhibition of AP-1 signaling. Int Immunopharmacol 2019; 73:451-460. [DOI: 10.1016/j.intimp.2019.05.032] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 04/30/2019] [Accepted: 05/17/2019] [Indexed: 11/21/2022]
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Avila-Carrasco L, Majano P, Sánchez-Toméro JA, Selgas R, López-Cabrera M, Aguilera A, González Mateo G. Natural Plants Compounds as Modulators of Epithelial-to-Mesenchymal Transition. Front Pharmacol 2019; 10:715. [PMID: 31417401 PMCID: PMC6682706 DOI: 10.3389/fphar.2019.00715] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Accepted: 06/05/2019] [Indexed: 12/13/2022] Open
Abstract
Epithelial-to-mesenchymal transition (EMT) is a self-regulated physiological process required for tissue repair that, in non-controled conditions may lead to fibrosis, angiogenesis, loss of normal organ function or cancer. Although several molecular pathways involved in EMT regulation have been described, this process does not have any specific treatment. This article introduces a systematic review of effective natural plant compounds and their extract that modulates the pathological EMT or its deleterious effects, through acting on different cellular signal transduction pathways both in vivo and in vitro. Thereby, cryptotanshinone, resveratrol, oxymatrine, ligustrazine, osthole, codonolactone, betanin, tannic acid, gentiopicroside, curcumin, genistein, paeoniflorin, gambogic acid and Cinnamomum cassia extracts inhibit EMT acting on transforming growth factor-β (TGF-β)/Smads signaling pathways. Gedunin, carnosol, celastrol, black rice anthocyanins, Duchesnea indica, cordycepin and Celastrus orbiculatus extract downregulate vimectin, fibronectin and N-cadherin. Sulforaphane, luteolin, celastrol, curcumin, arctigenin inhibit β-catenin signaling pathways. Salvianolic acid-A and plumbagin block oxidative stress, while honokiol, gallic acid, piperlongumine, brusatol and paeoniflorin inhibit EMT transcription factors such as SNAIL, TWIST and ZEB. Plectranthoic acid, resveratrol, genistein, baicalin, polyphyllin I, cairicoside E, luteolin, berberine, nimbolide, curcumin, withaferin-A, jatrophone, ginsenoside-Rb1, honokiol, parthenolide, phoyunnanin-E, epicatechin-3-gallate, gigantol, eupatolide, baicalin and baicalein and nitidine chloride inhibit EMT acting on other signaling pathways (SIRT1, p38 MAPK, NFAT1, SMAD, IL-6, STAT3, AQP5, notch 1, PI3K/Akt, Wnt/β-catenin, NF-κB, FAK/AKT, Hh). Despite the huge amount of preclinical data regarding EMT modulation by the natural compounds of plant, clinical translation is poor. Additionally, this review highlights some relevant examples of clinical trials using natural plant compounds to modulate EMT and its deleterious effects. Overall, this opens up new therapeutic alternatives in cancer, inflammatory and fibrosing diseases through the control of EMT process.
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Affiliation(s)
- Lorena Avila-Carrasco
- Therapeutic and Pharmacology Department, Health and Human Science Research, Academic Unit of Human Medicine and Health Sciences, Autonomous University of Zacatecas, Zacatecas, Mexico
| | - Pedro Majano
- Molecular Biology Unit, Research Institute of University Hospital La Princesa (IP), Madrid, Spain
| | - José Antonio Sánchez-Toméro
- Department and Nephrology, Research Institute of University Hospital La Princesa (IP), Madrid, Spain.,Renal research network REDINREN, Madrid, Spain
| | - Rafael Selgas
- Research Institute of La Paz (IdiPAZ), University Hospital La Paz, Madrid, Spain.,Renal research network REDINREN, Madrid, Spain
| | - Manuel López-Cabrera
- Renal research network REDINREN, Madrid, Spain.,Molecular Biology Research Centre Severo Ochoa, Spanish Council for Scientific Research (CSIC), Madrid, Spain
| | - Abelardo Aguilera
- Molecular Biology Unit, Research Institute of University Hospital La Princesa (IP), Madrid, Spain.,Renal research network REDINREN, Madrid, Spain
| | - Guadalupe González Mateo
- Research Institute of La Paz (IdiPAZ), University Hospital La Paz, Madrid, Spain.,Renal research network REDINREN, Madrid, Spain.,Molecular Biology Research Centre Severo Ochoa, Spanish Council for Scientific Research (CSIC), Madrid, Spain
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76
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Manzoor MF, Ahmad N, Ahmed Z, Siddique R, Zeng XA, Rahaman A, Muhammad Aadil R, Wahab A. Novel extraction techniques and pharmaceutical activities of luteolin and its derivatives. J Food Biochem 2019; 43:e12974. [PMID: 31489656 DOI: 10.1111/jfbc.12974] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 06/11/2019] [Accepted: 06/15/2019] [Indexed: 11/26/2022]
Abstract
Luteolin is a 3', 4', 5, 7 tetra hydroxyl flavonoid that exits in many plants, fruits, and vegetable. Many methods of extraction, isolation, and purification are being used, and therapeutic properties are being under discussion due to its valuable role in nutrition and human health. In this review, we have summarized conventional and novel extraction techniques from most recent research on luteolin, its derivatives, and its biological activities. Maceration, soxhlet, reflux, hydrodistillation, ultrasound-assisted extraction, microwave-assisted extraction, ultrasound microwave-assisted extraction, enzyme-assisted extraction, supercritical fluid extraction, and high-speed counter-current chromatography extraction techniques are being used for isolation and purification of these phytochemicals. The anti-inflammatory, anti-cancer, antioxidant, antiviral, heart protective, neurological impairments protection, anti-aging, and whiting properties have been discussed in this review. The literature suggests luteolin and its derivative has many promising health benefits and its therapeutic activity is strongly associated with isolating and purifying solvents and extraction techniques. PRACTICAL APPLICATIONS: This review aims to highlight the sources, novel extraction techniques, and pharmaceutical properties of luteolin. This review provides enough knowledge about how to get maximum extraction yield of luteolin using the novel extraction techniques. Because its therapeutic activity is strongly associated with isolating and purifying solvents and techniques.
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Affiliation(s)
- Muhammad Faisal Manzoor
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China.,Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou, China
| | - Nazir Ahmad
- Department of Food Science and Nutrition, Faculty of Life Science, Government College University, Faisalabad, Pakistan
| | - Zahoor Ahmed
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China.,Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou, China
| | - Rabia Siddique
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Xin-An Zeng
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China.,Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou, China
| | - Abdul Rahaman
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China.,Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou, China
| | - Rana Muhammad Aadil
- National Institute of Food Science and Technology, University of Agriculture Faisalabad, Pakistan
| | - Abdul Wahab
- Department of Food Science and Nutrition, Faculty of Life Science, Government College University, Faisalabad, Pakistan
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77
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Cheng CY, Yeh CC. Adaptive immunoregulation of luteolin and chlorogenic acid in lipopolysaccharide-induced interleukin-10 expression. Tzu Chi Med J 2019; 32:186-192. [PMID: 32269953 PMCID: PMC7137375 DOI: 10.4103/tcmj.tcmj_23_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 03/01/2019] [Accepted: 04/11/2019] [Indexed: 12/27/2022] Open
Abstract
Objective: To investigate the mechanism of the adaptive effect of two compounds in Lonicerae japonica flos (LJF), luteolin (LUT) and chlorogenic acid (CGA), on the expression of interleukin (IL) IL-10 and IL-6. Materials and Methods: RAW264.7 cells receiving lipopolysaccharide (LPS) were pretreated with CGA and LJF. The expression of pro-inflammatory cytokines and IL-10 was evaluated by reverse transcription-polymerase chain reaction. Moreover, the concentrations of IL-10 and IL-6 were measured by enzyme-linked immunosorbent assay in the culture medium obtained 24 h after LPS treatment. Nuclear extracts of RAW264.7 cells, pretreated with CGA or LUT and LPS, were prepared after 6 h, and C/EBPβ and C/EBPδ were measured by Western blotting. Nuclear factor-κB (NF-κB) activity was measured by electrophoretic mobility shift assay. The phosphorylated form of IκB, ERK1/2, p38, JNK, and IκB, ERK2, p38, or JNK were also measured by Western blotting. Results: CGA enhanced the LPS-induced expression of IL-10 and IL-6, and increased NF-κB, Sp1, C/EBPβ and δ. The effect of CGA is interfered with Lut by suppressing the phosphorylation of IκB and p38, and NF-κB activity. In the event, IL-6 was suppressed and IL-10 was not influenced. Conclusion: LUT and CGA, which are abundant in LJF that is one of the ingredients in Gingyo-san, have adaptive immunoregulative effect on the expression of IL-10.
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Affiliation(s)
- Chu-Yen Cheng
- Department of Chinese Medicine, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chia-Yi, Taiwan
| | - Chia-Chou Yeh
- Department of Chinese Medicine, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chia-Yi, Taiwan.,School of Post-Baccalaureate Chinese Medicine, Tzu Chi University, Hualien, Taiwan
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78
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Luteolin modulates gene expression related to steroidogenesis, apoptosis, and stress response in rat LC540 tumor Leydig cells. Cell Biol Toxicol 2019; 36:31-49. [DOI: 10.1007/s10565-019-09481-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 05/27/2019] [Indexed: 01/09/2023]
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79
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El-Deeb OS, Ghanem HB, El-Esawy RO, Sadek MT. The modulatory effects of luteolin on cyclic AMP/Ciliary neurotrophic factor signaling pathway in experimentally induced autoimmune encephalomyelitis. IUBMB Life 2019; 71:1401-1408. [PMID: 31185137 DOI: 10.1002/iub.2099] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 05/09/2019] [Accepted: 05/15/2019] [Indexed: 02/03/2023]
Abstract
Multiple sclerosis (MS) is considered to be an autoimmune disorder of the central nervous system (CNS) manifested by chronic inflammation. Although its etiology is not completely understood, inflammation and apoptosis are known to be major players involved in its pathogenesis. Luteolin, the naturally occurring flavonoid, is known by strong antioxidant and anti-inflammatory properties, yet research studies about its therapeutic role in MS are still lacking. The study aimed to provide insight into effects of luteolin in experimental autoimmune encephalomyelitis (EAE) by monitoring inflammatory, apoptotic, and antioxidant biochemical parameters in addition to histological examination findings. The study included 45 adult female Wistar rats allocated to three equal groups: (a) group I: control group, (b) group II: EAE group, EAE was induced by single intradermal injection of 0.2 mL inoculum comprising 20-μg recombinant rat myelin oligodendrocyte glycoprotein (MOG), and (c) group III: luteolin-treated EAE group, luteolin was given in a dose of 10 mg/kg/day, i.p. All groups were subjected to assessment of brain ciliary neurotropic factor (CNTF) mRNA gene expression and measurement of cleaved caspase 3, nuclear factor kappa B (NF-κB), cyclic AMP (cAMP), and macrophage inflammatory protein 1 alpha (MIP-1α) by the ELISA technique, total antioxidant capacity (TAC) level is assessed spectrophotometrically. Compared with the EAE group, luteolin-treated EAE group showed upregulation of CNTF expression and significant increase in cAMP and TAC levels, while it showed significant decrease in cleaved caspase 3, NF-κB, and MIP-1α levels. Based on our data herein, luteolin may provide a promising preclinical therapeutic line in MS being anti-inflammatory, antiapoptotic, and neurotrophic agent. © 2019 IUBMB Life, 71(9):1401-1408, 2019.
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Affiliation(s)
- Omnia Safwat El-Deeb
- Medical Biochemistry Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Heba Bassiony Ghanem
- Medical Biochemistry Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | | | - Mona Tayssir Sadek
- Histology and Cell Biology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
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80
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Chen J, Jayachandran M, Xu B, Yu Z. Sea bass (Lateolabrax maculatus) accelerates wound healing: A transition from inflammation to proliferation. JOURNAL OF ETHNOPHARMACOLOGY 2019; 236:263-276. [PMID: 30862523 DOI: 10.1016/j.jep.2019.03.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 02/17/2019] [Accepted: 03/05/2019] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Sea bass (Lateolabrax maculatus) has been used for dietary therapy practice for wound healing of puerperal or surgery patients in China. Traditional Chinese medicinal books also documented that sea bass can be used to manage inflammation-associated conditions such as wound, miscarriage and cough. Some studies also proved that dietary supplement with fish benefited for treating many inflammatory - associated conditions, such as cardiovascular disease, ulcerative colitis and hyperlipidemia. However, the studies on the pharmacological mechanisms of wound healing efficacy of sea bass remain lack of investigation. AIM OF THE STUDY The aim of this study is to investigate the molecular mechanisms of sea bass on wound healing efficacy. Establishing a further justification for clinical application of aqueous extract of sea bass (ASB) in treating wound healing. MATERIALS AND METHODS Transition from inflammation to proliferation phase treated as the critical step in wound repair which were investigated via in vitro and in vivo study. A series of inflammatory mediators associated with wound healing and proliferation effects of fibroblasts upon treatments were studied via Western blotting, enzyme-linked immunosorbent assay (ELISA), real time reverse transcription-polymerase chain reaction (RT-PCR) and scratch assay. The cutaneous wound model was applied on skin wound healing study to observe the healing process in C57BL/6 mice upon ASB treatments. Hematological parameters and tumor necrosis factor-α (TNF-α) secretions in serum were determined. Histopathological examinations were conducted by hematoxylin and eosin (H&E) staining and Masson staining. Immunofluorescence were performed to identify infiltrating neutrophils (MPO) and α-smooth muscle actin (α-SMA). RESULTS Results showed that ASB significantly reduced the production of inflammatory mediators cyclooxygenase-2 (COX-2), nitrite oxide (NO) production and TNF-α. The phosphorylation and nuclear protein levels of transcription factor nuclear factor-κB (NF-ĸB) in toll-like receptor 4 (TLR4) signaling were decreased by ASB treatment as well. Wound closure rate and cyclin D1 expression level of fibroblasts were significantly increased by ASB treatments. Moreover, cutaneous wound model in C57BL/6 mice presented many similarities in appearance to the process of wound healing. CONCLUSIONS The in vitro study demonstrated an inhibitory effect of ASB on the inflammatory mediators regulated by TLR4 signaling pathways, providing evidence that ASB treatment potentially accelerate the wound healing through migration and proliferation enhancement. Additionally, the in vivo study suggested that ASB treatment has a potential in accelerating the proliferation phase of wound healing via well-organized abundant collagen deposition, angiogenesis and re-epithelialization in wounds. The present findings can be treated as a pharmacological basis for the folk use of sea bass and further studies in biological and medical fields.
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Affiliation(s)
- Jiali Chen
- Programme of Food Science and Technology, Division of Science and Technology, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, China; Centre for Cancer and Inflammation Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Muthukumaran Jayachandran
- Programme of Food Science and Technology, Division of Science and Technology, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, China
| | - Baojun Xu
- Programme of Food Science and Technology, Division of Science and Technology, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, China.
| | - Zhiling Yu
- Centre for Cancer and Inflammation Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China.
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81
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Ginsenoside Rb1 ameliorates Staphylococcus aureus-induced Acute Lung Injury through attenuating NF-κB and MAPK activation. Microb Pathog 2019; 132:302-312. [PMID: 31059756 DOI: 10.1016/j.micpath.2019.05.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 04/30/2019] [Accepted: 05/02/2019] [Indexed: 11/24/2022]
Abstract
Acute lung injury (ALI) is clinically characterized by excessive inflammation leading to acute respiratory distress syndrome (ARDS), having high morbidity and mortality both in human and animals. Ginsenoside Rb1 (Rb1) is a major primary bioactive component extracted by Panax ginseng, which has numerous pharmacological functions such as anti-cancer, anti-inflammatory, and antioxidant. However, the anti-inflammatory effects of Rb1 in Staphylococcus aureus (S. aureus)-induced ALI in mice have not been investigated. The aim of the current study was to determine the anti-inflammatory influence of Rb1 on S. aureus-induced ALI in mice, and to explore its possible underlying principle mechanisms in RAW 264.7 macrophage cells. The results of physical morphology, histopathological variation and wet-to-dry weight ratio of lungs revealed that Rb1 significantly attenuated S. aureus-induced lung injury. Furthermore, qPCR results displayed that Rb1 inhibited IL-1β, IL-6 and TNF-α production both in vivo and in vitro. The activation of Toll-like receptor 2 (TLR2) by S. aureus was inhibited by application of Rb1 as confirmed by results of immunofluorescence assay. The expression of NF-kB and MAPK signaling proteins revealed that Rb1 significantly attenuated the phosphorylation of p65, ERK, as well as JNK. Altogether, the results of this experiment presented that Rb1 has ability to protect S. aureus-induced ALI in mice by attenuating TLR-2-mediated NF-kB and MAPK signaling pathways. Consequently, Rb-1 might be a potential medicine in the treatment of S. aureus-induced lung inflammation.
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82
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Ou HC, Pandey S, Hung MY, Huang SH, Hsu PT, Day CH, Pai P, Viswanadha VP, Kuo WW, Huang CY. Luteolin: A Natural Flavonoid Enhances the Survival of HUVECs against Oxidative Stress by Modulating AMPK/PKC Pathway. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2019; 47:541-557. [PMID: 30966772 DOI: 10.1142/s0192415x19500289] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Oxidative stress has been implicated in the pathogenesis of atherosclerotic cardiovascular diseases. Dietary supplementation of anti-oxidants has been reported to have beneficial effects on the prevention of atherogenic diseases. Luteolin (a natural flavonoid) has been shown to possess antimutagenic, antitumorigenic, anti-oxidant and anti-inflammatory properties. However, the effects and underlying molecular mechanisms of luteolin on cardiovascular systems are poorly explored. Therefore, the aim of the present study was to test whether luteolin could protect against oxidative stress-induced endothelial cell injury and explore the underlying mechanisms. In this study, human umbilical vein endothelial cells (HUVECs) were pre-treated with luteolin followed by hydrogen peroxide induction (H2O2). Our results showed that luteolin protected against H2O2-induced oxidative stress and ameliorated ROS and superoxide generation. In addition, we found that luteolin treatment inhibited the H2O2-induced membrane assembly of NADPH oxidase subunits, which was further confirmed by specifically inhibiting NADPH oxidase using DPI treatment. Furthermore, pAMPK protein expression was enhanced and p-PKC isoforms were significantly down-regulated by luteolin treatment in a dose-dependent manner, and a similar effect was observed upon DPI treatment. However, co-treatment with the specific inhibitor of AMPK (Compound C) restored p-PKC levels suggesting the role of AMPK signaling in regulating p-PKC expression under oxidative stress condition in HUVECs. Finally, we confirmed using siRNAs and specific inhibitor and/or activator of AMPK (AICAR) that luteolin treatment induced AMPK is a key player and regulator of activated expression of PKC isoforms and thereby confers protection against H2O2-induced oxidative stress in HUVECs.
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Affiliation(s)
- Hsiu-Chung Ou
- * Department of Occupational Therapy, College of Medical and Health Science, Taichung, Taiwan
| | - Sudhir Pandey
- ‡ Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan
| | - Meng-Yu Hung
- § Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
| | - Su-Hua Huang
- † Department of Biotechnology, Asia University, Taichung, Taiwan
| | - Pei-Tz Hsu
- † Department of Biotechnology, Asia University, Taichung, Taiwan
| | | | - Peiying Pai
- ¶ School of Medicine, College of Medicine, China Medical University, Taichung, Taiwan.,†† Division of Cardiovascular Medicine, Department of Medicine, China Medical University Hospital, Taichung, Taiwan
| | | | - Wei-Wen Kuo
- ∥ Department of Biological Science and Technology, China Medical University, Taichung, Taiwan
| | - Chih-Yang Huang
- ‡ Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan.,§ Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan.,‡‡ Medical Research Center For Exosomes and Mitochondria Related Diseases, China Medical University Hospital, Taichung, Taiwan.,¶¶ Department of Clinical Laboratory, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Guangdong, China.,∥∥ College of Medicine, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Tzu Chi University, Hualien, Taiwan
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83
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Zhang M, Chen Y, Yang MJ, Fan XR, Xie H, Zhang L, Nie YS, Yan M. Celastrol attenuates renal injury in diabetic rats via MAPK/NF-κB pathway. Phytother Res 2019; 33:1191-1198. [PMID: 30768745 DOI: 10.1002/ptr.6314] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Revised: 01/08/2019] [Accepted: 01/10/2019] [Indexed: 12/17/2022]
Abstract
The purpose of this study was to investigate the renal protective effect of celastrol on diabetic rats. Furthermore, the mechanism of its action was discussed whether it was related to MAPK/NF-κB signaling pathway. There were a total of 36 rats. Six rats were randomly chosen as the control group. The remaining 30 rats were given 1% streptozotocin intraperitoneal injection (50 mg/kg) and were randomly divided into five groups: the model control group, the low-dose celastrol group, the high-dose celastrol group, the Tripterygium wilfordii polyglycosides group, and the MAPK/NF-κB inhibitor group. After 4 weeks of continuous administration, 24-hr urine volume, urinary protein, blood urea nitrogen, and serum creatinine content were observed, and hematoxylin-eosin (HE) staining of the kidney and liver were evaluated. p38MAPK was designated by immunohistochemical method, and NF-κB p65 in renal tissue was detected by western blotting. Our results showed that celastrol could not only reduce contents of creatinine and urea nitrogen in blood but also reduce excretion of urinary protein in diabetic rats, improve renal pathological injury, and down-regulate the expression of p38MAPK and NF-κB p65. In conclusion, celastrol could protect kidney of diabetic rats by regulating the signal pathway of MAPK/NF-κB, inhibiting inflammation and delaying renal injury.
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Affiliation(s)
- Min Zhang
- Department of Pharmacy, the Second Xiangya Hospital, Central South University, Changsha, China
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, China
- The First Clinical Medical College, Shaanxi University of Chinese Medicine, Xianyang, China
| | - Yan Chen
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, China
| | - Mei-Ju Yang
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xin-Rong Fan
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, China
- College of Integrated Traditional Chinese and Western Medicine, Hunan University of Chinese Medicine, Changsha, China
| | - Hui Xie
- College of Integrated Traditional Chinese and Western Medicine, Hunan University of Chinese Medicine, Changsha, China
| | - Ling Zhang
- College of Integrated Traditional Chinese and Western Medicine, Hunan University of Chinese Medicine, Changsha, China
| | - Yu-Song Nie
- College of Integrated Traditional Chinese and Western Medicine, Hunan University of Chinese Medicine, Changsha, China
| | - Miao Yan
- Department of Pharmacy, the Second Xiangya Hospital, Central South University, Changsha, China
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84
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Abu-Elsaad N, El-Karef A. Protection against nonalcoholic steatohepatitis through targeting IL-18 and IL-1alpha by luteolin. Pharmacol Rep 2019; 71:688-694. [PMID: 31207429 DOI: 10.1016/j.pharep.2019.03.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Revised: 02/02/2019] [Accepted: 03/14/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND The management of nonalcoholic steatohepatitis (NASH) is still a crosstalk so the current study was designed to evaluate the effect of different luteolin doses on an experimental model of NASH and to elucidate novel anti-inflammatory pathways underlying its effect. METHODS Adult male Wistar rats (200-220 g; n = 60) were used. Rats were fed a high carbohydrate/high fat diet (˜ 30% carbohydrate and 42% fat) daily for 12 weeks to induce NASH. Luteolin (10, 25, 50 or 100 mg/kg/day) was administered as a suspension (10% w/v in 0.9% NaCl) using an oral gavage. Histopathological changes (necrosis, inflammation and steatosis) were evaluated. Biomarkers for liver function, lipid peroxidation, extracellular matrix deposition and anti-oxidant activity were measured. Levels of IFN-γ, TNF-α and IL-1α and IL-18 were measured. RESULTS Obtained results showed ability of luteolin to reduce activity of ALT and AST and to decrease levels of bilirubin, hyaluronic acid and malondialdehyde significantly (p < 0.05). Also, luteolin showed an anti-oxidant activity as indicated by the significant (p < 0.05) increase in reduced glutathione. Finally, a significant (p < 0.05) decrease in IFN-γ, TNF-α, IL-1α and IL-18 levels was observed most notably in groups that received high doses of luteolin (50 and 100 mg/kg). CONCLUSIONS Luteolin can protect against non-alcoholic steatohepatitis through targeting the pro-inflammatory IL-1 and Il-18 pathways in addition to an antioxidant effect.
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Affiliation(s)
- Nashwa Abu-Elsaad
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura, Egypt.
| | - Amr El-Karef
- Department of Pathology, Faculty of Medicine, Mansoura University, Mansoura, Egypt.
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Ng NL, Tuet WY, Chen Y, Fok S, Gao D, Tagle Rodriguez MS, Klein M, Grosberg A, Weber RJ, Champion JA. Cellular and Acellular Assays for Measuring Oxidative Stress Induced by Ambient and Laboratory-Generated Aerosols. Res Rep Health Eff Inst 2019; 2019:1-57. [PMID: 31872749 PMCID: PMC7266377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023] Open
Abstract
INTRODUCTION Many studies have established associations between exposure to air pollution, or atmospheric particulate matter (PM), and adverse health effects. An increasing array of studies have suggested oxidative stress as a possible mechanism by which PM-induced health effects arise, and as a result, many chemical and cellular assays have been developed to study PM-induced oxidant production. Although significant progress has been made in recent years, there are still many gaps in this area of research that have not been addressed. Many prior studies have focused on the aerosol of primary origin (e.g., the aerosol emitted from combustion engines) although the aerosol formed from the oxidation of volatile species, secondary organic aerosol (SOA), has been shown to be the predominant type of aerosol even in urban areas. Current SOA health studies are limited in number, and as such, the health effects of SOA are poorly characterized. Also, there is a lack of perspective in terms of the relative toxicities of different SOA systems. Additionally, although chemical assays have identified some SOA constituents associated with adverse health endpoints, the applicability of these results to cellular responses has not been well established. SPECIFIC AIMS The overall objective of this study was to better understand the oxidative properties of different types and components of PM mixtures (especially SOA) through systematic laboratory chamber experiments and ambient field studies. The study had four specific aims. 1 To develop a cellular assay optimized for measuring reactive oxygen and nitrogen species (ROS/RNS) production resulting from PM exposure and to identify a robust parameter that could represent ROS/RNS levels for comparison with different endpoints. 2 To identify ambient PM components associated with ROS/RNS production and evaluate whether results from chemical assays represented cellular responses in terms of ROS/RNS production. 3 To investigate and provide perspective on the relative toxicities of SOA formed from common biogenic and anthropogenic precursors under different conditions (e.g., humidity, nitrogen oxides [NOx], and redox-active metals) and identify bulk aerosol properties associated with cellular responses. 4 To investigate the effects of photochemical aging on aerosol toxicity. METHODS Ambient PM samples were collected from urban and rural sites in the greater Atlanta area as part of the Southeastern Center for Air Pollution and Epidemiology (SCAPE) study between June 2012 and October 2013. The concentrations of water-soluble species (e.g., water-soluble organic carbon [WSOC], brown carbon [Br C], and metals) were characterized using a variety of instruments. Samples for this study were chosen to span the observed range of dithiothreitol (DTT) activities. Laboratory studies were conducted in the Georgia Tech Environmental Chamber (GTEC) facility in order to generate SOA under well-controlled photooxidation conditions. Precursors of biogenic origin (isoprene, α-pinene, and β-caryophyllene) and anthropogenic origin (pentadecane, m-xylene, and naphthalene) were oxidized under various formation conditions (dry vs. humid, NOx, and ammonium sulfate vs. iron sulfate seed particles) to produce SOA of differing chemical composition and mass loading. For the naphthalene system, a series of experiments were conducted with different initial hydrocarbon concentrations to produce aerosols with various degree of oxidation. A suite of instruments was utilized to monitor gas- and particle-phase species. Bulk aerosol properties (e.g., O:C, H:C, and N:C ratios) were measured using a high-resolution time-of-flight aerosol mass spectrometer. Filter samples were collected for chemical oxidative potential and cellular measurements. For the naphthalene system, multiple filter samples were collected over the course of a single experiment to collect aerosols of different photochemical aging. For all filter samples, chemical oxidative potentials were determined for water-soluble extracts using a semiautomated DTT assay system. Murine alveolar macrophages and neonatal rat ventricular myocytes were also exposed to PM samples extracted in cell culture medium to investigate cellular responses. ROS/RNS production was detected using the intracellular ROS/RNS probe, carboxy-2',7'-dichlorodihydrofluorescein diacetate (carboxy-H2DCFA), whereas cellular metabolic activity was assessed using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT). Finally, cytokine production, that is, secreted levels of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6), were measured post-exposure using an enzyme-linked immunosorbent assay (ELISA). To identify PM constituents associated with oxidative properties, linear regressions between oxidative properties (cellular responses or DTT activity) and aerosol composition (metals, elemental ratios, etc.) were evaluated using Pearson's correlation coefficient, where the significance was determined using multiple imputation and evaluated using a 95% confidence interval. RESULTS We optimized several parameters for the ROS/RNS assay, including cell density (2 × 104 cells/well for macrophages and 3.33 × 104 cells/well for cardiomyocytes), probe concentration (10 µM), and sample incubation time (24 hours). Results from both ambient and laboratory-generated aerosols demonstrate that ROS/RNS production was highly dose-dependent and nonlinear with respect to PM dose. Of the dose-response metrics investigated in this study (maximum response, dose at which the response is 10% above the baseline [threshold], dose at which 50% of the response is attained [EC50], rate at which the maximum response is attained [Hill slope], and area under the dose-response curve [AUC]), we found that the AUC was the most robust parameter whose informativeness did not depend on dose range. A positive, significant correlation was observed between ROS/RNS production as represented by AUC and chemical oxidative potential as measured by DTT for ambient samples collected in summer. Conversely, a relatively constant AUC was observed for ambient samples collected in winter regardless of the corresponding DTT activity. We also identified several PM constituents (WSOC, BrC, iron, and titanium) that were significantly correlated with AUC for summer samples. The strong correlation between organic species and ROS/RNS production highlights a need to understand the contribution of organic aerosols to PM-induced health effects. No significant correlations were observed for other ROS/RNS metrics or PM constituents, and no spatial trends were observed. For laboratory-generated aerosol, precursor identity influenced oxidative potentials significantly, with isoprene and naphthalene SOA having the lowest and highest DTT activities, respectively. Both precursor identity and formation condition significantly influenced inflammatory responses induced by SOA exposure, and several response patterns were identified for SOA precursors whose photooxidation products share similar carbon-chain length and functionalities. The presence of iron sulfate seed particles did not have an apparent effect on oxidative potentials; however, a higher level of ROS/RNS production was observed for all SOA formed in the presence of iron sulfate compared with ammonium sulfate. We also identified a significant positive correlation between ROS/RNS production and average carbon oxidation state, a bulk aerosol property. It may therefore be possible to roughly estimate ROS/RNS production using this property, which is readily obtainable. This correlation may have significant implications as aerosols have an atmospheric lifetime of a week, during which average carbon oxidation state increases because of atmospheric photochemical aging. Our results suggest that aerosols might become more toxic as they age in the atmosphere. Finally, in the context of ambient samples, laboratory-generated SOA induced comparable or higher levels of ROS/RNS. Oxidative potentials for all laboratory SOA systems, with the exception of naphthalene (which was higher), were all comparable with oxidative potentials observed in ambient samples.
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Affiliation(s)
- N L Ng
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA
- School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA
| | - W Y Tuet
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA
| | - Y Chen
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA
| | - S Fok
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA
| | - D Gao
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA
| | - M S Tagle Rodriguez
- Department of Biomedical Engineering, University of California-Irvine, Irvine, CA
| | - M Klein
- Rollins School of Public Health, Emory University, Atlanta, GA
| | - A Grosberg
- Department of Biomedical Engineering, University of California-Irvine, Irvine, CA
| | - R J Weber
- School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA
| | - J A Champion
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA
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Lodhi S, Vadnere GP, Patil KD, Patil TP. Protective effects of luteolin on injury induced inflammation through reduction of tissue uric acid and pro-inflammatory cytokines in rats. J Tradit Complement Med 2019; 10:60-69. [PMID: 31956559 PMCID: PMC6957812 DOI: 10.1016/j.jtcme.2019.02.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 02/17/2019] [Accepted: 02/24/2019] [Indexed: 01/01/2023] Open
Abstract
Background and aim Luteolin belongs to flavone group of flavonoids, present in many plants with potent antioxidant, anti-inflammatory and anti-proliferative effects. The objective of present study was to investigate protective effect of luteolin on injury induced inflammation via Monosodium urate (MSU) crystals induced and Acetaminophen (AMP) induced liver injury in rats. Experimental procedure Protective effect of luteolin was observed by measurement of rat paw edema, lysosomal enzymes, antioxidants status and cytokine level. Measurement of uric acid level and neutrophil infiltration were done in AMP induced liver injury in rats. Luteolin was tested at 30 and 50 mg/kg doses and compare with colchicine. Results and conclusion Luteolin significantly decreases paw edema in dose dependent manner compare to control group in MSU crystal-induced rats. Luteolin (50 mg/kg) was showed significant decrease in serum level of oxidative and lysosomal enzymes, proinflammatory cytokines i.e. tumor necrosis factor (TNF)-α (39.28 ± 3.17), interleukin (IL)-1β (12.07 ± 1.24), and IL-6 (24.72 ± 2.52) in MSU crystal-induced rats. In AMP induced liver injury, tissue uric acid level and myeloperoxidase were decreased significantly after treatment with luteolin as well as N-acetylcysteine. Serum level of liver enzymes was significantly reduced after treatment with luteolin. Histological observation of ankle joints and liver was support to protective effect of luteolin at both doses. In conclusion, luteolin showed anti-inflammatory effect through restoration of cytokine level, lysosomal enzymes level and antioxidants status. The reduction of liver tissue uric acid content may be one of the mechanisms for protective effect of luteolin. It can contribute to reduce injury induced inflammation.
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Affiliation(s)
- Santram Lodhi
- Department of Pharmacognosy, Smt. Sharadchandrika Suresh Patil College of Pharmacy, Chopda, Jalgaon 425107, M. S, India
| | - Gautam P Vadnere
- Department of Pharmacognosy, Smt. Sharadchandrika Suresh Patil College of Pharmacy, Chopda, Jalgaon 425107, M. S, India
| | - Kiran D Patil
- Department of Pharmacology, Smt. Sharadchandrika Suresh Patil College of Pharmacy, Chopda, Jalgaon 425107, M. S, India
| | - Tushar P Patil
- Department of Pharmacology, Smt. Sharadchandrika Suresh Patil College of Pharmacy, Chopda, Jalgaon 425107, M. S, India
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20-Hydroxy-3-Oxolupan-28-Oic Acid Attenuates Inflammatory Responses by Regulating PI3K⁻Akt and MAPKs Signaling Pathways in LPS-Stimulated RAW264.7 Macrophages. Molecules 2019; 24:molecules24030386. [PMID: 30678231 PMCID: PMC6385096 DOI: 10.3390/molecules24030386] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 01/18/2019] [Accepted: 01/21/2019] [Indexed: 12/16/2022] Open
Abstract
20-Hydroxy-3-oxolupan-28-oic acid (HOA), a lupane-type triterpene, was obtained from the leaves of Mahonia bealei, which is described in the Chinese Pharmacopeia as a remedy for inflammation and related diseases. The anti-inflammatory mechanisms of HOA, however, have not yet been fully elucidated. Therefore, the objective of this study was to characterize the molecular mechanisms of HOA in lipopolysaccharide (LPS)-stimulated RAW264.7 cells. HOA suppressed the release of nitric oxide (NO), pro-inflammatory cytokine tumor necrosis factor α (TNF-α), and interleukin 6 (IL-6) in LPS-stimulated RAW264.7 macrophages without affecting cell viability. Quantitative real-time reverse-transcription polymerase chain reaction (RT-qPCR) analysis indicated that HOA also suppressed the gene expression of inducible NO synthase (iNOS), TNF-α, and IL-6. Further analyses demonstrated that HOA inhibited the phosphorylation of upstream signaling molecules, including p85, PDK1, Akt, IκBα, ERK, and JNK, as well as the nuclear translocation of nuclear factor κB (NF-κB) p65. Interestingly, HOA had no effect on the LPS-induced nuclear translocation of activator protein 1 (AP-1). Taken together, these results suggest that HOA inhibits the production of cytokine by downregulating iNOS, TNF-α, and IL-6 gene expression via the downregulation of phosphatidylinositol 3-kinase (PI3K)/Akt and mitogen-activated protein kinases (MAPKs), and the inhibition of NF-κB activation. Our findings indicate that HOA could potentially be used as an anti-inflammatory agent for medical use.
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88
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Zhao Z, Zhang H, Wang M, Zhang C, Kuang P, Zhou Z, Zhang G, Wang Z, Zhang B, Shi X. The ethanol extract of honeysuckle stem modulates the innate immunity of Chinese mitten crab Eriocheir sinensis against Aeromonas hydrophila. FISH & SHELLFISH IMMUNOLOGY 2018; 82:304-311. [PMID: 30125699 DOI: 10.1016/j.fsi.2018.08.035] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 08/08/2018] [Accepted: 08/14/2018] [Indexed: 06/08/2023]
Abstract
Honeysuckle stem had been used as feed additives to modulate immunity in breeding industry, which was limited in the aquaculture field. In this study, the immunomodulation of honeysuckle stem ethanol extract (designed as HSE) on Chinese mitten crab Eriocheir sinensis was detected. The crabs fed with HSE diets for 30 days had higher level of the total haemocyte count (HTC), lysozyme activity and PO activity (P < 0.05), and had no obvious affect on the phagocytic activity, NO and TNF-α level. When challenged with Aeromonas hydrophila (1.0 × 107 colony-forming units), HSE exhibited weak antibacterial activity against A. hydrophila and increased survival rate of crabs. The decreasing of THC and the increasing of TNF-α concentration, EsCaspase and EsLITAF mRNA expression level were all inhibited significantly by HSE treatment (P < 0.05), when the crabs were challenged by A. hydrophila. Moreover, the following immune parameters of crabs were enhanced by HSE treatment after A. hydrophila infection, including the rising of phagocytosis index and phagocytic rate of haemocyte, the rising of lysozyme, PO, NOS activities and nitric oxide concentration (P < 0.05). Therefore, it was concluded that HSE had great potential to develop into feed additive of crabs, which could enhance the innate immunity of Chinese mitten crabs E. sinensis effectively after A. hydrophila infection.
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Affiliation(s)
- Zhilong Zhao
- College of Pharmacy, Linyi University, Linyi, 276000, Shandong, China
| | - Haijuan Zhang
- College of Pharmacy, Linyi University, Linyi, 276000, Shandong, China
| | - Mengqiang Wang
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China
| | - Chun Zhang
- College of Pharmacy, Linyi University, Linyi, 276000, Shandong, China
| | - Pengqun Kuang
- College of Pharmacy, Linyi University, Linyi, 276000, Shandong, China
| | - Zhi Zhou
- Key Laboratory of Tropical Biological Resources of Ministry of Education, Hainan University, Haikou, 570228, China
| | - Guizhi Zhang
- College of Pharmacy, Linyi University, Linyi, 276000, Shandong, China
| | - Zhen Wang
- College of Pharmacy, Linyi University, Linyi, 276000, Shandong, China.
| | - Bianbian Zhang
- College of Pharmacy, Linyi University, Linyi, 276000, Shandong, China
| | - Xiaowei Shi
- College of Pharmacy, Linyi University, Linyi, 276000, Shandong, China.
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89
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Hayasaka N, Shimizu N, Komoda T, Mohri S, Tsushida T, Eitsuka T, Miyazawa T, Nakagawa K. Absorption and Metabolism of Luteolin in Rats and Humans in Relation to in Vitro Anti-inflammatory Effects. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:11320-11329. [PMID: 30280574 DOI: 10.1021/acs.jafc.8b03273] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Luteolin is a flavonoid present in plants in the form of aglycone or glucosides. In this study, luteolin glucosides (i.e., luteolin-7- O-β-d-glucoside, luteolin-7- O-[2-(β-d-apiosyl)-β-d-glucoside], and luteolin-7- O-[2-(β-d-apiosyl)-6-malonyl-β-d-glucoside]) prepared from green pepper leaves as well as luteolin aglycone were orally administered to rats. Regardless of the administered luteolin form, luteolin glucuronides were mainly detected from plasma and organs. Subsequently, luteolin aglycone, the most absorbed form of luteolin in rats, was orally administered to humans. As a result, luteolin-3'- O-sulfate was mainly identified from plasma, suggesting that not only luteolin form but also animal species affect the absorption and metabolism of luteolin. When LPS-treated RAW264.7 cells were treated with luteolin glucuronides and luteolin sulfate (the characteristic metabolites identified from rats and humans, respectively), the different luteolin conjugates were metabolized in different ways, suggesting that such difference in metabolism results in their difference in anti-inflammatory effects.
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Affiliation(s)
- Natsumi Hayasaka
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science , Tohoku University , Sendai , Miyagi 980-0845 , Japan
| | - Naoki Shimizu
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science , Tohoku University , Sendai , Miyagi 980-0845 , Japan
| | - Toshikazu Komoda
- School of Food, Agricultural and Environmental Sciences , Miyagi University , Sendai , Miyagi 982-0215 , Japan
| | - Satoshi Mohri
- School of Food, Agricultural and Environmental Sciences , Miyagi University , Sendai , Miyagi 982-0215 , Japan
| | - Tojiro Tsushida
- School of Food, Agricultural and Environmental Sciences , Miyagi University , Sendai , Miyagi 982-0215 , Japan
| | - Takahiro Eitsuka
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science , Tohoku University , Sendai , Miyagi 980-0845 , Japan
| | - Teruo Miyazawa
- Food and Biotechnology Innovation Project, New Industry Creation Hatchery Center (NICHe) , Tohoku University , Sendai , Miyagi 980-8579 , Japan
- Food and Health Science Research Unit, Graduate School of Agricultural Science , Tohoku University , Sendai , Miyagi 980-0845 , Japan
| | - Kiyotaka Nakagawa
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science , Tohoku University , Sendai , Miyagi 980-0845 , Japan
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90
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Kim YS, Kim EK, Jeon NJ, Ryu BI, Hwang JW, Choi EJ, Moon SH, Jeon BT, Park PJ. Antioxidant Effect of Taurine-Rich Paroctopus dofleini Extracts Through Inhibiting ROS Production Against LPS-Induced Oxidative Stress In Vitro and In Vivo Model. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 975 Pt 2:1165-1177. [PMID: 28849531 DOI: 10.1007/978-94-024-1079-2_93] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Taurine is an essential amino acid to improve the function of cardiovascular, skeletal muscle, retina, and central nervous system. It also plays a role as an antioxidant agent against reactive oxygen species (ROS) generated by various substances. The aim of the current study was to examine the antioxidant capacity of water extracts of Paroctopus dofleini. Radical scavenging activity of P. dofleini extracts was performed using an ESR spectrophotometer. Protective effects of P. dofleini extracts against lipopolysaccharide (LPS)-induced oxidative stress in RAW264.7 cells were evaluated using flow cytometry. The P. dofleini extracts showed a potent antioxidant activity against LPS-induced oxidative stress on RAW264.7 cells. Furthermore, the in vivo antioxidant activity of P. dofleini extract on LPS-induced oxidative stress was assessed using zebrafish embryos. P. dofleini successfully scavenged the LPS-induced intracellular ROS and prevented lipid peroxidation in zebrafish embryos. The results obtained in this study clearly demonstrate that the P. dofleini significantly scavenge the ROS and prevent lipid peroxidation in both in vitro and in vivo models.
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Affiliation(s)
- Yon-Suk Kim
- Department of Biotechnology, Konkuk University, Chungju, 27478, South Korea
- Korea Nokyong Research Center, Konkuk University, Chungju, 27478, South Korea
| | - Eun-Kyung Kim
- Division of Food Bio Science, Konkuk University, Chungju, 27478, South Korea
| | - Nam-Joo Jeon
- Department of Biotechnology, Konkuk University, Chungju, 27478, South Korea
| | - Bo-Im Ryu
- Department of Biotechnology, Konkuk University, Chungju, 27478, South Korea
| | - Jin-Woo Hwang
- Department of Biotechnology, Konkuk University, Chungju, 27478, South Korea
| | - Eun-Ju Choi
- Division of Sport Science, Konkuk University, Chungju, 27478, South Korea
| | - Sang-Ho Moon
- Korea Nokyong Research Center, Konkuk University, Chungju, 27478, South Korea
| | - Byong-Tae Jeon
- Korea Nokyong Research Center, Konkuk University, Chungju, 27478, South Korea
| | - Pyo-Jam Park
- Department of Biotechnology, Konkuk University, Chungju, 27478, South Korea.
- Korea Nokyong Research Center, Konkuk University, Chungju, 27478, South Korea.
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91
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Yanagido A, Ueno M, Jiang Z, Cho K, Yamaguchi K, Kim D, Oda T. Increase in anti-inflammatory activities of radical-degraded porphyrans isolated from discolored nori (Pyropia yezoensis). Int J Biol Macromol 2018; 117:78-86. [DOI: 10.1016/j.ijbiomac.2018.05.146] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 05/20/2018] [Accepted: 05/21/2018] [Indexed: 12/16/2022]
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92
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Kong X, Huo G, Liu S, Li F, Chen W, Jiang D. Luteolin suppresses inflammation through inhibiting cAMP-phosphodiesterases activity and expression of adhesion molecules in microvascular endothelial cells. Inflammopharmacology 2018; 27:773-780. [PMID: 30276558 DOI: 10.1007/s10787-018-0537-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 09/25/2018] [Indexed: 12/17/2022]
Abstract
Luteolin, an anti-inflammatory ingredient found in the Chinese herb Folium perillae, can inhibit not only the cyclic adenosine monophosphate (cAMP)-phosphodiesterases (PDEs) activity of neutrophils, but also the expression of lymphocyte function-associated antigen-1 in neutrophils, both of which result in a decrease in the adhesion between neutrophils and microvascular endothelial cells. However, the effect of luteolin on the cAMP-PDEs activity and expression of adhesion molecules in endothelial cells are not clear. In the present study, primary rat pulmonary microvascular endothelial cells and a lipopolysaccharide-induced rat acute pneumonia model were used to explore the role of luteolin on cAMP-PDEs activity, expression of adhesion molecules, and leukocyte infiltration. We demonstrate that rat pulmonary microvascular endothelial cells expressed high levels of cAMP-PDEs, specifically PDE4, and further luteolin exhibited dose-dependent inhibition on the activity of cAMP-PDEs or PDE4 in endothelial cells. Luteolin also had a significant inhibitory effect on the expression of vascular cell adhesion molecule (VCAM)-1, but not intracellular cell adhesion molecule (ICAM)-1 in microvascular endothelial cells. Further, we show that luteolin decreased the levels of soluble ICAM-1 (sICAM-1), but not soluble E-selectin in the serum of rats subjected to acute pneumonia. We also show that luteolin treatment decreased the wet/dry weight ratio of lung tissue and reduced the total number of serum leukocytes in a dose-dependent manner in a rat acute pneumonia model. In conclusion, these results demonstrate that luteolin suppresses inflammation, at least in part, through inhibiting both cAMP-PDEs or PDE4 activity and the expression of VCAM-1 (in vitro) and sICAM-1 (in vivo) in endothelial cells.
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Affiliation(s)
- Xueli Kong
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, Beijing University of Agriculture, 7 Beinong Road, Huilongguan Town, Changping District, Beijing, 102206, China
| | - Guitao Huo
- National Center for Safety Evaluation of Drugs, National Institutes for Food and Drug Control, Beijing, 100050, China
| | - Shurong Liu
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, Beijing University of Agriculture, 7 Beinong Road, Huilongguan Town, Changping District, Beijing, 102206, China
| | - Fengnan Li
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, Beijing University of Agriculture, 7 Beinong Road, Huilongguan Town, Changping District, Beijing, 102206, China
| | - Wu Chen
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, Beijing University of Agriculture, 7 Beinong Road, Huilongguan Town, Changping District, Beijing, 102206, China
| | - Daixun Jiang
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, Beijing University of Agriculture, 7 Beinong Road, Huilongguan Town, Changping District, Beijing, 102206, China.
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93
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Rungsung S, Singh TU, Rabha DJ, Kumar T, Cholenahalli Lingaraju M, Parida S, Paul A, Sahoo M, Kumar D. Luteolin attenuates acute lung injury in experimental mouse model of sepsis. Cytokine 2018; 110:333-343. [DOI: 10.1016/j.cyto.2018.03.042] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 03/24/2018] [Accepted: 03/30/2018] [Indexed: 12/30/2022]
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Ji RC, Eshita Y, Kobayashi T, Hidano S, Kamiyama N, Onishi Y. Role of simvastatin in tumor lymphangiogenesis and lymph node metastasis. Clin Exp Metastasis 2018; 35:785-796. [PMID: 30255290 DOI: 10.1007/s10585-018-9940-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 09/20/2018] [Indexed: 12/27/2022]
Abstract
Lymphangiogenesis plays a crucial role in promoting cancer metastasis to sentinel lymph nodes (LNs) and beyond. Increasing data have shown that simvastatin, a cholesterol-lowering medication for the prevention of cardiovascular diseases, is involved in tumor growth and dissemination, and endothelial functions. This study aimed to investigate the potential effect of simvastatin on lymphatic formation and LN metastasis. Tumor models were established by subcutaneous injection of B16-F10 melanoma cells into mouse hind footpads. Simvastatin was administered (0.2 µg/g, intraperitoneal injection, IP) every other day for a total of eight times. Tissue samples were removed and examined by immunohistochemical staining and reverse transcription-polymerase chain reaction (RT-PCR) techniques. The lymphatics of LN, skin, liver, and lung exhibited morphological changes, and LN weight and metastatic area of the tumor group treated with simvastatin was lower than that of the untreated tumor group. Analysis of lymphatic size, area fraction, and lymphatic vessel density showed tissue specificity and variation to melanoma carcinogenesis in the simvastatin-treated group compared with the untreated group. In addition, LNs and cutaneous tissues showed altered expression of lymphangiogenic factors and inflammatory cytokines such as VEGF-A/-C/-D and TNF-α. These findings indicated that simvastatin may modify lymphangiogenesis and tumor progression in malignant melanoma.
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Affiliation(s)
- Rui-Cheng Ji
- Faculty of Welfare and Health Science, Oita University, Oita, 870-1192, Japan.
| | - Yuki Eshita
- Hokkaido University Research Center for Zoonosis Control, Hokkaido, 001-0020, Japan.,Oita University Faculty of Medicine, Oita, 879-5593, Japan
| | - Takashi Kobayashi
- Department of Infectious Disease Control, Faculty of Medicine, Oita University, Oita, 879-5593, Japan
| | - Shinya Hidano
- Department of Infectious Disease Control, Faculty of Medicine, Oita University, Oita, 879-5593, Japan
| | - Naganori Kamiyama
- Department of Infectious Disease Control, Faculty of Medicine, Oita University, Oita, 879-5593, Japan
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Dalar A, Bengu AS, Allahverdiyev O. Analysis of Phytochemical Composition and Biological Activities of Verbascum cheiranthifolium var. cheiranthifolium stem and flowers. INTERNATIONAL JOURNAL OF SECONDARY METABOLITE 2018. [DOI: 10.21448/ijsm.401127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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96
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Ji N, Pan S, Shao C, Chen Y, Zhang Z, Wang R, Qiu Y, Jin M, Kong D. Spinacetin Suppresses the Mast Cell Activation and Passive Cutaneous Anaphylaxis in Mouse Model. Front Pharmacol 2018; 9:824. [PMID: 30104977 PMCID: PMC6077219 DOI: 10.3389/fphar.2018.00824] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Accepted: 07/09/2018] [Indexed: 12/21/2022] Open
Abstract
We previously reported the anti-inflammatory and anti-asthmatic activities of the extract of the Inula japonica Thunb. Aiming for discovery of a novel anti-inflammatory compound, we isolated spinacetin from the extract and investigated its in vitro and in vivo anti-inflammatory effect and the related mechanism. Effect of spinacetin on the Syk signaling pathway was studied in bone marrow-derived mast cells (BMMCs), and that on the nuclear factor-κB (NF-κB) and mitogen-activated protein kinases (MAPKs) was investigated in Rat basophilic leukemia (RBL)-2H3 cells and human mast cell line (HMC-1). The in vivo anti-inflammatory activity was assessed with passive cutaneous anaphylaxis (PCA) reaction assay. Spinacetin significantly inhibited the release of histamine, and production of inflammatory mediators such as leukotriene C4 (LTC4) and interlukin-6 (IL-6) in IgE/Ag stimulated BMMCs. Analysis of the signaling pathways demonstrated that spinacetin inhibited activation of Syk, linker of activated T cells (LAT), phospholipase Cγ (PLCγ), cytosolic phospholipase A2 (cPLA2), MAPKs, Akt/NF-κB, and intracellular Ca2+ mobilization but with no effect on Fyn and Lyn. On the other hand, spinacetin suppressed IgE/Ag-induced activation of RBL-2H3 cells with inhibition against phosphorylation of extracellular signal regulated-protein kinase (ERK), c-Jun-NH2-terminal kinase (JNK), p38 MAPKs, PLCγ, translocation of cPLA2, and Akt/IκBα/NF-κB signal. However, spinacetin had no effect on PMA and A23187-induced activation of HMC-1. Furthermore, oral administration of spinacetin dose-dependently attenuated IgE/Ag-mediated PCA reaction in mouse model. Taken together, spinacetin showed the activities in preventing inflammatory processes, which might be at least partially attributed to the abolishment of Syk-dependent activation of IgE/Ag-mediated mast cells.
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Affiliation(s)
- Ning Ji
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Shunli Pan
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Chen Shao
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Yufen Chen
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, China.,Pharmacy Department, Tanggu Hospital of Infectious Diseases of Tianjin Binhai New Area, Tianjin, China
| | - Zhe Zhang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Ran Wang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Yuling Qiu
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Meihua Jin
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Dexin Kong
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, China
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97
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Liu X, Meng J. Luteolin alleviates LPS-induced bronchopneumonia injury in vitro and in vivo by down-regulating microRNA-132 expression. Biomed Pharmacother 2018; 106:1641-1649. [PMID: 30119240 DOI: 10.1016/j.biopha.2018.07.094] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 07/09/2018] [Accepted: 07/18/2018] [Indexed: 01/04/2023] Open
Abstract
Bronchopneumonia is a common multiple infection disease under 2 years old. Luteolin is a natural flavonoid widely distributed in plants with anti-inflammatory effect. This study aimed to explore the effects of luteolin on lipopolysaccharide (LPS)-induced bronchopneumonia injury in vitro and in vivo. Firstly, the viability and apoptosis of human bronchial epithelial BEAS-2B cells after luteolin treatment were assessed. Then, cells were treated with 10 μM LPS to simulate inflammatory injury. The potential protective effects of luteolin on LPS-induced BEAS-2B cell inflammatory injury were detected. Moreover, after LPS and/or luteolin treatment, the expression of microRNA-132 (miR-132) in BEAS-2B cells was measured. The roles of miR-132 in protective activity of luteolin were investigated. Finally, the LPS-induced bronchopneumonia murine model was established and the anti-inflammatory effects of luteolin in vivo were analyzed. The results showed that LPS decreased BEAS-2B cell viability, increased cell apoptosis and enhanced inflammatory cytokines expression. Luteolin alleviated the LPS-induced viability loss, apoptosis and elevated expression of inflammatory cytokines in a dose-dependent manner. Moreover, luteolin alleviated the LPS-induced miR-132 expression increase in BEAS-2B cells. Overexpression of miR-132 reversed the protective effects of luteolin on LPS-induced inflammatory injury. Mechanistically, luteolin mitigated LPS-induced activation of NF-κB signaling pathway by down-regulation of miR-132. Furthermore, we also found that luteolin alleviated LPS-induced bronchopneumonia model in vivo. In conclusion, this study revealed that luteolin alleviated LPS-induced bronchopneumonia injury in vitro and in vivo through down-regulating miR-132. These findings provide theoretical basis for deeply exploring the treatment of bronchopneumonia in children by using luteolin.
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Affiliation(s)
- Xiuxia Liu
- Department of Pediatrics, Jining First People's Hospital, Jining 272011, Shandong, China
| | - Jie Meng
- Department of Pediatrics, Jining First People's Hospital, Jining 272011, Shandong, China.
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98
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Li J, Dong JZ, Ren YL, Zhu JJ, Cao JN, Zhang J, Pan LL. Luteolin decreases atherosclerosis in LDL receptor-deficient mice via a mechanism including decreasing AMPK-SIRT1 signaling in macrophages. Exp Ther Med 2018; 16:2593-2599. [PMID: 30186491 DOI: 10.3892/etm.2018.6499] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 09/29/2017] [Indexed: 12/25/2022] Open
Abstract
Lipid metabolism dysfunction and inflammatory infiltration into arterial walls are associated with the initiation and progression of atherosclerosis. Luteolin has been reported to possess anti-inflammatory actions and protect against tumor necrosis factor-α (TNF-α)-induced vascular inflammation, monocyte adhesion to endothelial cells and the formation of lipid-laden macrophages in vitro. However, the role of luteolin in atherosclerosis and the associated vascular inflammatory remains to be elucidated. The aim of the present study was to investigate the effects of luteolin on plaque development, lipid accumulation and macrophage inflammation low-density lipoprotein receptor-deficient (LDLR-/-) mice with atherosclerosis, as well as the underlying mechanisms in ox-induced THP-1-derived macrophages. Firstly, 9-week-old male C57BL/6 mice were fed a standard chow diet, western diet or western diet supplemented with 100 mg/kg luteolin for 14 weeks. The results of histological staining revealed that 100 mg/kg dietary luteolin ameliorated western diet-induced atherosclerotic plaque development and lipid accumulation in the abdominal aorta. Furthermore, total cholesterol, triglyceride and LDL-cholesterol levels were decreased in the plasma of western diet + luteolin mice compared with those fed with a western diet alone. Quantitative polymerase chain reaction analysis revealed that dietary luteolin inhibited the expression of cluster of differentiation 68, macrophage chemoattractant protein 2 and inflammatory cytokines, including interleukin-6 (IL-6) and TNF-α. Mechanistically, luteolin decreased the total cholesterol level as well as macrophage chemokine and inflammatory cytokine expression in THP-1-derived macrophages via AMP-activated protein kinase (AMPK)-Sirtuin (SIRT)1 signaling following induction with oxidized low-density lipoprotein. The results of the present study suggest that luteolin prevents plaque development and lipid accumulation in the abdominal aorta by decreasing macrophage inflammation during atherosclerosis, which is mediated by mechanisms including AMPK-SIRT1 signaling.
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Affiliation(s)
- Jiang Li
- Department of Cardiology, Beijing An Zhen Hospital, Capital Medical University, Beijing 100029, P.R. China
| | - Jian-Zeng Dong
- Department of Cardiology, Beijing An Zhen Hospital, Capital Medical University, Beijing 100029, P.R. China
| | - Yan-Long Ren
- Department of Cardiology, Beijing An Zhen Hospital, Capital Medical University, Beijing 100029, P.R. China
| | - Jia-Jia Zhu
- Department of Cardiology, Beijing An Zhen Hospital, Capital Medical University, Beijing 100029, P.R. China
| | - Jia-Ning Cao
- Department of Cardiology, Beijing An Zhen Hospital, Capital Medical University, Beijing 100029, P.R. China
| | - Jing Zhang
- Department of Cardiology, Beijing An Zhen Hospital, Capital Medical University, Beijing 100029, P.R. China
| | - Li-Li Pan
- Department of Rheumatology, Beijing An Zhen Hospital, Capital Medical University, Beijing 100029, P.R. China
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99
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Komatsu W, Kishi H, Yagasaki K, Ohhira S. Urolithin A attenuates pro-inflammatory mediator production by suppressing PI3-K/Akt/NF-κB and JNK/AP-1 signaling pathways in lipopolysaccharide-stimulated RAW264 macrophages: Possible involvement of NADPH oxidase-derived reactive oxygen species. Eur J Pharmacol 2018; 833:411-424. [PMID: 29932926 DOI: 10.1016/j.ejphar.2018.06.023] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 06/18/2018] [Accepted: 06/18/2018] [Indexed: 01/22/2023]
Abstract
Urolithin A, a gut microbial metabolite of ellagic acid, is reported to exert anti-inflammatory effects in vitro and in vivo. However, complete mechanisms underlying the regulation of inflammatory responses by urolithin A remain unclear. This study aimed to evaluate the anti-inflammatory potential of urolithin A and its underlying mechanisms in lipopolysaccharide (LPS)-stimulated RAW264 macrophages. Urolithin A significantly attenuated the pro-inflammatory mediator production in LPS-stimulated RAW264 and mouse peritoneal macrophages. This compound significantly suppressed the LPS-elicited nuclear factor-κB (NF-κB) and activator protein-1 (AP-1) activation. The phosphorylation of Akt and c-Jun N-terminal kinase (JNK) was also inhibited by the treatment with urolithin A. Through experiments using kinase inhibitors, urolithin A abolished the LPS-induced phosphatidylinositol 3-kinase (PI3-K)/Akt/NF-κB and JNK/AP-1 signaling pathways, resulting in suppression of pro-inflammatory mediator production. Furthermore, treatment with this compound significantly reduced the intracellular accumulation of reactive oxygen species, which are known to act as secondary messengers in the activation of redox-sensitive transcription factors NF-κB and AP-1. Urolithin A treatment also diminished the LPS-evoked activation of NADPH oxidase (NOX), which is the main source of reactive oxygen species in activated macrophages. The inhibition of this activity by urolithin A led to the prevention of LPS-elicited NF-κB and AP-1 activation as well as Akt and JNK phosphorylation, resulting in the reduction of pro-inflammatory mediator production. Collectively, these results indicate that urolithin A treatment attenuates pro-inflammatory mediator production by suppressing NOX-derived reactive oxygen species-mediated PI3-K/Akt/NF-κB and JNK/AP-1 signaling pathways in LPS-stimulated macrophages.
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Affiliation(s)
- Wataru Komatsu
- Laboratory of International Environmental Health, Dokkyo Medical University School of Medicine, Tochigi, Japan.
| | - Hisashi Kishi
- Laboratory of International Environmental Health, Dokkyo Medical University School of Medicine, Tochigi, Japan
| | - Kazumi Yagasaki
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, Japan
| | - Shuji Ohhira
- Laboratory of International Environmental Health, Dokkyo Medical University School of Medicine, Tochigi, Japan
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100
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Yang SC, Chen PJ, Chang SH, Weng YT, Chang FR, Chang KY, Chen CY, Kao TI, Hwang TL. Luteolin attenuates neutrophilic oxidative stress and inflammatory arthritis by inhibiting Raf1 activity. Biochem Pharmacol 2018; 154:384-396. [PMID: 29883707 DOI: 10.1016/j.bcp.2018.06.003] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 06/04/2018] [Indexed: 11/30/2022]
Abstract
Neutrophils play a significant role in inflammatory tissue injury. Activated neutrophils produce reactive oxygen species (ROS), release proteases, and form neutrophil extracellular traps (NETs), significantly affecting the pathogenesis of inflammatory arthritis. We examined the therapeutic effects of luteolin, a flavone found in many plants, in neutrophilic inflammation and on acute inflammatory arthritis. Luteolin significantly inhibited superoxide anion generation, ROS production, and NET formation in human neutrophils. The increase in elastase release, CD11b expression, and chemotaxis was also inhibited by luteolin. Luteolin significantly suppressed phosphorylation of extracellular signal-regulated kinase (Erk) and mitogen-activated protein kinase kinase-1 (MEK-1), but not c-Jun N-terminal kinase (JNK) and p38 mitogen-activated protein kinase (MAPK). Analysis of the molecular mechanism further revealed that luteolin acts as a Raf-1 inhibitor. In mice with complete Freund's adjuvant-induced arthritis, luteolin ameliorated neutrophil infiltration as well as the thickness of paw edema and ROS production. In conclusion, in addition to its known ROS scavenging effect, this study is the first to provide evidence that luteolin diminishes human neutrophil inflammatory responses by inhibiting Raf1-MEK-1-Erk. Our results focused on the importance of neutrophil activation in inflammatory tissue injury and offer opportunities for the development of luteolin's therapeutic potential to attenuate neutrophilic inflammatory diseases.
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Affiliation(s)
- Shun-Chin Yang
- Department of Anesthesiology, Taipei Veterans General Hospital and National Yang-Ming University, Taipei 112, Taiwan; Graduate Institute of Natural Products and Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Po-Jen Chen
- Graduate Institute of Natural Products and Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Department of Cosmetic Science, Providence University, Taichung 433, Taiwan
| | - Shih-Hsin Chang
- Graduate Institute of Natural Products and Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan
| | - Yu-Ting Weng
- Graduate Institute of Natural Products and Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; School of Medicine, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Kuang-Yi Chang
- Department of Anesthesiology, Taipei Veterans General Hospital and National Yang-Ming University, Taipei 112, Taiwan
| | - Chun-Yu Chen
- Graduate Institute of Natural Products and Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital at Linkou, Taoyuan 333, Taiwan
| | - Ting-I Kao
- Graduate Institute of Natural Products and Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Division of Chinese Internal Medicine, Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products and Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan; Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital at Linkou, Taoyuan 333, Taiwan; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan.
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