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Fakhri S, Moradi SZ, Nouri Z, Cao H, Wang H, Khan H, Xiao J. Modulation of integrin receptor by polyphenols: Downstream Nrf2-Keap1/ARE and associated cross-talk mediators in cardiovascular diseases. Crit Rev Food Sci Nutr 2022; 64:1592-1616. [PMID: 36073725 DOI: 10.1080/10408398.2022.2118226] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
As a group of heterodimeric and transmembrane glycoproteins, integrin receptors are widely expressed in various cell types overall the body. During cardiovascular dysfunction, integrin receptors apply inhibitory effects on the antioxidative pathways, including nuclear factor erythroid 2-related factor 2 (Nrf2)-Kelch like ECH Associated Protein 1 (Keap1)/antioxidant response element (ARE) and interconnected mediators. As such, dysregulation in integrin signaling pathways influences several aspects of cardiovascular diseases (CVDs) such as heart failure, arrhythmia, angina, hypertension, hyperlipidemia, platelet aggregation and coagulation. So, modulation of integrin pathway could trigger the downstream antioxidant pathways toward cardioprotection. Regarding the involvement of multiple aforementioned mediators in the pathogenesis of CVDs, as well as the side effects of conventional drugs, seeking for novel alternative drugs is of great importance. Accordingly, the plant kingdom could pave the road in the treatment of CVDs. Of natural entities, polyphenols are multi-target and accessible phytochemicals with promising potency and low levels of toxicity. The present study aims at providing the cardioprotective roles of integrin receptors and downstream antioxidant pathways in heart failure, arrhythmia, angina, hypertension, hyperlipidemia, platelet aggregation and coagulation. The potential role of polyphenols has been also revealed in targeting the aforementioned dysregulated signaling mediators in those CVDs.
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Affiliation(s)
- Sajad Fakhri
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Seyed Zachariah Moradi
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Zeinab Nouri
- Student Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Hui Cao
- Department of Analytical and Food Chemistry, Faculty of Sciences, Universidade de Vigo, Nutrition and Bromatology Group, Ourense, Spain
| | - Hui Wang
- State Key Laboratory of Food Science and Technology, China-Canada Joint Lab of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, Nanchang, China
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - Jianbo Xiao
- Department of Analytical and Food Chemistry, Faculty of Sciences, Universidade de Vigo, Nutrition and Bromatology Group, Ourense, Spain
- International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang, China
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Albadawi DAI, Ravishankar D, Vallance TM, Patel K, Osborn HMI, Vaiyapuri S. Impacts of Commonly Used Edible Plants on the Modulation of Platelet Function. Int J Mol Sci 2022; 23:605. [PMID: 35054793 PMCID: PMC8775512 DOI: 10.3390/ijms23020605] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/28/2021] [Accepted: 01/03/2022] [Indexed: 02/07/2023] Open
Abstract
Cardiovascular diseases (CVDs) are a primary cause of deaths worldwide. Thrombotic diseases, specifically stroke and coronary heart diseases, account for around 85% of CVDs-induced deaths. Platelets (small circulating blood cells) are responsible for the prevention of excessive bleeding upon vascular injury, through blood clotting (haemostasis). However, unnecessary activation of platelets under pathological conditions, such as upon the rupture of atherosclerotic plaques, results in thrombus formation (thrombosis), which can cause life threatening conditions such as stroke or heart attack. Therefore, antiplatelet medications are usually prescribed for people who are at a high risk of thrombotic diseases. The currently used antiplatelet drugs are associated with major side effects such as excessive bleeding, and some patients are resistant to these drugs. Therefore, numerous studies have been conducted to develop new antiplatelet agents and notably, to establish the relationship between edible plants, specifically fruits, vegetables and spices, and cardiovascular health. Indeed, healthy and balanced diets have proven to be effective for the prevention of CVDs in diverse settings. A high intake of fruits and vegetables in regular diet is associated with lower risks for stroke and coronary heart diseases because of their plethora of phytochemical constituents. In this review, we discuss the impacts of commonly used selected edible plants (specifically vegetables, fruits and spices) and/or their isolated compounds on the modulation of platelet function, haemostasis and thrombosis.
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Affiliation(s)
- Dina A. I. Albadawi
- School of Pharmacy, University of Reading, Reading RG6 6UB, UK; (D.A.I.A.); (D.R.); (T.M.V.)
| | - Divyashree Ravishankar
- School of Pharmacy, University of Reading, Reading RG6 6UB, UK; (D.A.I.A.); (D.R.); (T.M.V.)
| | - Thomas M. Vallance
- School of Pharmacy, University of Reading, Reading RG6 6UB, UK; (D.A.I.A.); (D.R.); (T.M.V.)
| | - Ketan Patel
- School of Biological Sciences, University of Reading, Reading RG6 6UB, UK;
| | - Helen M. I. Osborn
- School of Pharmacy, University of Reading, Reading RG6 6UB, UK; (D.A.I.A.); (D.R.); (T.M.V.)
| | - Sakthivel Vaiyapuri
- School of Pharmacy, University of Reading, Reading RG6 6UB, UK; (D.A.I.A.); (D.R.); (T.M.V.)
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Seshadri VD. Cardioprotective properties of natural medicine in isoproterenol induced myocardial damage in the male Albino rats. Saudi J Biol Sci 2021; 28:3169-3175. [PMID: 34121851 PMCID: PMC8176003 DOI: 10.1016/j.sjbs.2021.04.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 04/04/2021] [Accepted: 04/05/2021] [Indexed: 01/23/2023] Open
Abstract
The main aim of this study is to investigate cardioprotective properties of natural medicine inmyocardial damage induced male Albino rats. The aqueous extractof Allium sativumwas used for the determination of phenolic compounds and flavonoids. The amount of phenol (1.39 ± 0.37 GAE/g dry weight) and flavonoids (49.1 ± 2.79 QE/g dry weight) were high in aqueous extract. A. sativumextract and showed 68.39 ± 3.6% DPPHscavenging activity. Isoproterenol was used to induce myocardial injury in Albino rats in vivo by subcutaneous injection (100 mg/kg body weight). To achieve this, experimental animals were categorized into six groups (n = 4), namely, positive, negative control, only isoproterenol administered groups, and garlic extract administered group at 100-300 mg extract/kg body weight. Oxidative stress marker and cardiac markers were assayed to analyze the cardioprotective properties of garlic extract. At 300 mg/kg doseof garlic extract, rat was recovered from various altered factors such as, aspartate aminotransferase, alkaline transminase and alkaline phosphatase. The rats treated with 300 mggarlic extract/kg body weight decreased the level of asparate aminotransferase (126 ± 6.4 IU/L) than other lower doses (100 mg extract/kg and 200 mg extract/kg). Alkaline transaminase level of rat serum level was 81 ± 4.34 IU/L. In the isoproterenol treated rats elevated level was observed (152 ± 4.42 IU/L enzyme activity). Pre-treatment of Albino rat with A. sativum extract reduced cardiac damage. Isoproterenol exposed animal showed 207.6 ± 1.2 mg/dL triglyceride and the garlic administered rat (300 mgextract/kg) reduced LDL-cholesterol level (61.3 ± 1.3 mg/dL) significantly (p < 0.05). Creatinine kinase -MB level was 269.5 ± 12.5 IU/L in the control animal and stress induced animal showed elevated level (572.3 ± 19.4 IU/L). Garlic treated experimental animal (300 µg/kg bw) decreased CK-MB level. To conclude, the aqueous extract of A. sativumshowed cardio protective properties against myocardial injury.
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Affiliation(s)
- Vidya Devanathadesikan Seshadri
- Department of Pharmacology and Toxicology, College of Pharmacy, Prince Sattam bin Abdul Aziz University, Al Kharj, Saudi Arabia
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Shin JH, Kwon HW, Rhee MH, Park HJ. Inhibitory effects of thromboxane A 2 generation by ginsenoside Ro due to attenuation of cytosolic phospholipase A 2 phosphorylation and arachidonic acid release. J Ginseng Res 2018; 43:236-241. [PMID: 30976161 PMCID: PMC6437639 DOI: 10.1016/j.jgr.2017.12.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 12/04/2017] [Accepted: 12/12/2017] [Indexed: 12/19/2022] Open
Abstract
Background Thromboxane A2 (TXA2) induces platelet aggregation and promotes thrombus formation. Although ginsenoside Ro (G-Ro) from Panax ginseng is known to exhibit a Ca2+-antagonistic antiplatelet effect, whether it inhibits Ca2+-dependent cytosolic phospholipase A2 (cPLA2α) activity to prevent the release of arachidonic acid (AA), a TXA2 precursor, is unknown. In this study, we attempted to identify the mechanism underlying G-Ro-mediated TXA2 inhibition. Methods We investigated whether G-Ro attenuates TXA2 production and its associated molecules, such as cyclooxygenase-1 (COX-1), TXA2 synthase (TXAS), cPLA2α, mitogen-activated protein kinases, and AA. To assay COX-1 and TXAS, we used microsomal fraction of platelets. Results G-Ro reduced TXA2 production by inhibiting AA release. It acted by decreasing the phosphorylation of cPLA2α, p38-mitogen-activated protein kinase, and c-Jun N-terminal kinase1, rather than by inhibiting COX-1 and TXAS in thrombin-activated human platelets. Conclusion G-Ro inhibits AA release to attenuate TXA2 production, which may counteract TXA2-associated thrombosis.
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Affiliation(s)
- Jung-Hae Shin
- Department of Biomedical Laboratory Science, College of Biomedical Science and Engineering, Inje University, Gimhae, Republic of Korea
| | - Hyuk-Woo Kwon
- Department of Biomedical Laboratory Science, Far East University, Eumseong, Republic of Korea
| | - Man Hee Rhee
- Laboratory of Veterinary Physiology and Signaling, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Hwa-Jin Park
- Department of Biomedical Laboratory Science, College of Biomedical Science and Engineering, Inje University, Gimhae, Republic of Korea
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Nguyen NU, Stamper BD. Polyphenols reported to shift APAP-induced changes in MAPK signaling and toxicity outcomes. Chem Biol Interact 2017; 277:129-136. [PMID: 28918124 DOI: 10.1016/j.cbi.2017.09.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 08/09/2017] [Accepted: 09/11/2017] [Indexed: 12/20/2022]
Abstract
Due to its widespread availability, acetaminophen (APAP) is the leading cause for drug-induced liver injury in many countries including United States and United Kingdom. When used as recommended, APAP is relatively safe. However, in overdose cases, increased metabolism of APAP to N-acetyl-para-benzoquinoneimine (NAPQI), a reactive metabolite, leads to glutathione (GSH) depletion, oxidative stress, and cellular injury. Throughout this process, a variety of factors play important roles in propagating toxicity, including c-Jun N-terminal kinase (JNK), a member of the mitogen-activated protein kinase (MAPK) family. Because of its involvement in multiple cellular processes, biomarkers associated with MAPK signaling have generated interest as a mechanistic target for protecting against APAP-induced liver injury and hepatocellular injury, in general. This review summarizes mechanistic details by which natural products, specifically those containing polyphenolic moieties, are capable of attenuating APAP-induced toxicity, at least in part through an ability to modulate MAPKs. These compounds include carnosic acid, chlorogenic acid, davallialactone, extracts from Hibiscus sabdariffa, quercetin-based compounds, and resveratrol. Despite variations in the experimental designs across these studies, common pathways and biomarkers were implicated in cytoprotection when polyphenolic compounds were given with APAP, such as enhanced antioxidant gene expression and reversal of APAP-induced changes in oxidative stress markers and MAPK signaling. Overall, an emphasis should be placed on method standardization for future studies if we are to gain a more in-depth understanding of how polyphenolic moieties contribute to cytoprotection during an APAP overdose event.
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Affiliation(s)
- Ngoc Uy Nguyen
- Pacific University College of Arts & Sciences, 2043 College Way UC #4882, Forest Grove, OR 97116, USA.
| | - Brendan David Stamper
- Pacific University School of Pharmacy, 222 S.E. 8th Avenue #451, Hillsboro, OR 97123, USA.
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Kwon HW, Shin JH, Lim DH, Ok WJ, Nam GS, Kim MJ, Kwon HK, Noh JH, Lee JY, Kim HH, Kim JL, Park HJ. Antiplatelet and antithrombotic effects of cordycepin-enriched WIB-801CE from Cordyceps militaris ex vivo, in vivo, and in vitro. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 16:508. [PMID: 27927214 PMCID: PMC5142411 DOI: 10.1186/s12906-016-1463-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 11/16/2016] [Indexed: 11/23/2022]
Abstract
BACKGROUND A species of the fungal genus Cordyceps has been used as a complementary and alternative medicine of traditional Chinese medicine, and its major component cordycepin and cordycepin-enriched WIB-801CE are known to have antiplatelet effects in vitro. However, it is unknown whether they have also endogenous antiplatelet and antithrombotic effects. In this study, to resolve these doubts, we prepared cordycepin-enriched WIB-801CE, an ethanol extract from Cordyceps militaris-hypha, then evaluated its ex vivo, in vivo, and in vitro antiplatelet and antithrombotic effects. METHODS Ex vivo effects of WIB-801CE on collagen- and ADP-induced platelet aggregation, serotonin release, thromboxane A2 (TXA2) production and its associated activities of enzymes [cyclooxygenase-1 (COX-1), TXA2 synthase (TXAS)], arachidonic acid (AA) release and its associated phosphorylation of phospholipase Cβ3, phospholipase Cγ2 or cytosolic phospholipase A2, mitogen-activated protein kinase (MAPK) [p38 MAPK, extracellular signal-regulated kinase (ERK)], and blood coagulation time in rats were investigated. In vivo effects of WIB-801CE on collagen plus epinephrine-induced acute pulmonary thromboembolism, and tail bleeding time in mice were also inquired. In vitro effects of WIB-801CE on cytotoxicity, and fibrin clot retraction in human platelets, and nitric oxide (NO) production in RAW264.7 cells or free radical scavenging activity were studied. RESULTS Cordycepin-enriched WIB-801CE inhibited ex vivo platelet aggregation, TXA2 production, AA release, TXAS activity, serotonin release, and p38 MAPK and ERK2 phosphorylation in collagen- and ADP-activated rat platelets without affecting blood coagulation. Furthermore, WIB-801CE manifested in vivo inhibitory effect on collagen plus epinephrine-induced pulmonary thromboembolism mice model. WIB-801CE inhibited in vitro NO production and fibrin clot retraction, but elevated free radical scavenging activity without affecting cytotoxicity against human platelets. CONCLUSION WIB-801CE inhibited collagen- and ADP-induced platelet activation and its associated thrombus formation ex vivo and in vivo. These were resulted from down-regulation of TXA2 production and its related AA release and TXAS activity, and p38MAPK and ERK2 activation. These results suggest that WIB-801CE has therapeutic potential to treat platelet activation-mediated thrombotic diseases in vivo.
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Affiliation(s)
- Hyuk-Woo Kwon
- Department of Biomedical Laboratory Science, College of Biomedical Science and Engineering, Inje University, 197, Inje-ro, Gyungnam, Gimhae, 50834, Korea
| | - Jung-Hae Shin
- Department of Biomedical Laboratory Science, College of Biomedical Science and Engineering, Inje University, 197, Inje-ro, Gyungnam, Gimhae, 50834, Korea
| | - Deok Hwi Lim
- Department of Biomedical Laboratory Science, College of Biomedical Science and Engineering, Inje University, 197, Inje-ro, Gyungnam, Gimhae, 50834, Korea
| | - Woo Jeong Ok
- Department of Biomedical Laboratory Science, College of Biomedical Science and Engineering, Inje University, 197, Inje-ro, Gyungnam, Gimhae, 50834, Korea
| | - Gi Suk Nam
- Department of Biomedical Laboratory Science, College of Biomedical Science and Engineering, Inje University, 197, Inje-ro, Gyungnam, Gimhae, 50834, Korea
| | - Min Ji Kim
- Department of Biomedical Laboratory Science, College of Biomedical Science and Engineering, Inje University, 197, Inje-ro, Gyungnam, Gimhae, 50834, Korea
| | - Ho-Kyun Kwon
- Central Research Center, Whanin Pharm. Co., Ltd., 107, Gwanggyo-ro, Suwon, Gyeonggi-do, 16229, Korea
| | - Jun-Hee Noh
- Central Research Center, Whanin Pharm. Co., Ltd., 107, Gwanggyo-ro, Suwon, Gyeonggi-do, 16229, Korea
| | - Je-Young Lee
- Central Research Center, Whanin Pharm. Co., Ltd., 107, Gwanggyo-ro, Suwon, Gyeonggi-do, 16229, Korea
| | - Hyun-Hong Kim
- Department of Biomedical Laboratory Science, College of Biomedical Science and Engineering, Inje University, 197, Inje-ro, Gyungnam, Gimhae, 50834, Korea
| | - Jong-Lae Kim
- Central Research Center, Whanin Pharm. Co., Ltd., 107, Gwanggyo-ro, Suwon, Gyeonggi-do, 16229, Korea.
| | - Hwa-Jin Park
- Department of Biomedical Laboratory Science, College of Biomedical Science and Engineering, Inje University, 197, Inje-ro, Gyungnam, Gimhae, 50834, Korea.
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Qi H, Huang Y, Yang Y, Dou G, Wan F, Zhang W, Yang H, Wang L, Wu C, Li L. Anti-platelet activity of panaxatriol saponins is mediated by suppression of intracellular calcium mobilization and ERK2/p38 activation. Altern Ther Health Med 2016; 16:174. [PMID: 27277000 PMCID: PMC4898458 DOI: 10.1186/s12906-016-1160-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 06/03/2016] [Indexed: 11/10/2022]
Abstract
BACKGROUND Increased platelet aggregation is implicated in the pathogenesis of ischemic stroke and anti-platelet strategy may contribute to its therapy. Panaxatriol saponin (PTS), the main components extracted from Panax notoginseng, has been shown to be efficacious in the prevention and treatment of ischemic stroke in China. The aim of this study is to determine the anti-platelet activity and explore the underlying mechanisms. METHODS Inhibitory effect of PTS and its main ginsenosides on agonists-induced platelet aggregation was determined using rabbit or human platelets. Intracellular Ca(2+) concentration ([Ca(2+)]i) mobilization was detected with fura-2/AM probe. MAPKs phosphorylation was determined by Western blotting. RESULTS Our results showed PTS inhibited the rabbit platelet aggregation induced by various agonists (collagen, thrombin and ADP). The three main ginsenosides (Rg1, Re and R1) existing in PTS also showed anti-platelet activity, while their combination exhibited no synergistic effect on rabbit platelet aggregation. Further study demonstrated that PTS and its main ginsenosides also exhibited inhibitory effect on human platelet aggregation. Mechanism study demonstrated that pre-treatment with PTS inhibited the agonists-induced intracellular calcium mobilization. Moreover, PTS significantly suppressed the activation of both ERK2 and p38 by the agonists via reducing the phosphorylation of ERK2 and p38. CONCLUSION We proved that PTS is effective in anti-platelet aggregation, which may, at least in part, be related to the suppression of intracellular calcium mobilization and ERK2/p38 activation. This study may provide one reasonable explanation for the efficacy of PTS on the prevention and treatment of ischemic stroke.
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Chang MC, Chang HH, Wang TM, Chan CP, Lin BR, Yeung SY, Yeh CY, Cheng RH, Jeng JH. Antiplatelet effect of catechol is related to inhibition of cyclooxygenase, reactive oxygen species, ERK/p38 signaling and thromboxane A2 production. PLoS One 2014; 9:e104310. [PMID: 25122505 PMCID: PMC4133398 DOI: 10.1371/journal.pone.0104310] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 07/05/2014] [Indexed: 01/12/2023] Open
Abstract
Catechol (benzenediol) is present in plant-derived products, such as vegetables, fruits, coffee, tea, wine, areca nut and cigarette smoke. Because platelet dysfunction is a risk factor of cardiovascular diseases, including stroke, atherosclerosis and myocardial infarction, the purpose of this study was to evaluate the anti-platelet and anti-inflammatory effect of catechol and its mechanisms. The effects of catechol on cyclooxygenase (COX) activity, arachidonic acid (AA)-induced aggregation, thromboxane B2 (TXB2) production, lactate dehydrogenase (LDH) release, reactive oxygen species (ROS) production and extracellular signal-regulated kinase (ERK)/p38 phosphorylation were determined in rabbit platelets. In addition, its effect on IL-1β-induced prostaglandin E2 (PGE2) production by fibroblasts was determined. The ex vivo effect of catechol on platelet aggregation was also measured. Catechol (5-25 µM) suppressed AA-induced platelet aggregation and inhibited TXB2 production at concentrations of 0.5-5 µM; however, it showed little cytotoxicity and did not alter U46619-induced platelet aggregation. Catechol (10-50 µM) suppressed COX-1 activity by 29-44% and COX-2 activity by 29-50%. It also inhibited IL-1β-induced PGE2 production, but not COX-2 expression of fibroblasts. Moreover, catechol (1-10 µM) attenuated AA-induced ROS production in platelets and phorbol myristate acetate (PMA)-induced ROS production in human polymorphonuclear leukocytes. Exposure of platelets to catechol decreased AA-induced ERK and p38 phosphorylation. Finally, intravenous administration of catechol (2.5-5 µmole/mouse) attenuated ex vivo AA-induced platelet aggregation. These results suggest that catechol exhibited anti-platelet and anti-inflammatory effects, which were mediated by inhibition of COX, ROS and TXA2 production as well as ERK/p38 phosphorylation. The anti-platelet effect of catechol was confirmed by ex vivo analysis. Exposure to catechol may affect platelet function and thus cardiovascular health.
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Affiliation(s)
- Mei-Chi Chang
- Biomedical Science Team, Chang Gung University of Science and Technology, Taoyuan,Taiwan
| | - Hsiao-Hua Chang
- Laboratory of Pharmacology & Toxicology, Graduate Institute of Clinical Dentistry and Department of Dentistry, National Taiwan University Hospital and National Taiwan University Medical College, Taipei, Taiwan
| | - Tong-Mei Wang
- Laboratory of Pharmacology & Toxicology, Graduate Institute of Clinical Dentistry and Department of Dentistry, National Taiwan University Hospital and National Taiwan University Medical College, Taipei, Taiwan
| | - Chiu-Po Chan
- Department of Dentistry, Chang Gung Memorial Hospital and Chang Gung University, Taipei, Taiwan
| | - Bor-Ru Lin
- Department of Diagnotherapeutics, National Taiwan University Hospital, Taipei, Taiwan
| | - Sin-Yuet Yeung
- Department of Dentistry, Chang Gung Memorial Hospital and Chang Gung University, Taipei, Taiwan
| | - Chien-Yang Yeh
- Laboratory of Pharmacology & Toxicology, Graduate Institute of Clinical Dentistry and Department of Dentistry, National Taiwan University Hospital and National Taiwan University Medical College, Taipei, Taiwan
| | - Ru-Hsiu Cheng
- Biomedical Science Team, Chang Gung University of Science and Technology, Taoyuan,Taiwan
| | - Jiiang-Huei Jeng
- Laboratory of Pharmacology & Toxicology, Graduate Institute of Clinical Dentistry and Department of Dentistry, National Taiwan University Hospital and National Taiwan University Medical College, Taipei, Taiwan
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Antiplatelet Activity of Morus alba Leaves Extract, Mediated via Inhibiting Granule Secretion and Blocking the Phosphorylation of Extracellular-Signal-Regulated Kinase and Akt. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 2014:639548. [PMID: 24701244 PMCID: PMC3950465 DOI: 10.1155/2014/639548] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Revised: 12/21/2013] [Accepted: 12/30/2013] [Indexed: 12/13/2022]
Abstract
Ethnopharmacological Relevance. Morus alba L. leaves (MAE) have been used in fork medicine for the treatment of beriberi, edema, diabetes, hypertension, and atherosclerosis. However, underlying mechanism of MAE on cardiovascular protection remains to be elucidated. Therefore, we investigated whether MAE affect platelet aggregation and thrombosis. Materials and Methods. The anti-platelet activity of MAE was studied using rat platelets. The extent of anti-platelet activity of MAE was assayed in collagen-induced platelet aggregation. ATP and serotonin release was carried out. The activation of integrin αIIbβ3 and phosphorylation of signaling molecules, including MAPK and Akt, were investigated with cytofluorometer and immunoblotting, respectively. The thrombus formation in vivo was also evaluated in arteriovenous shunt model of rats. Results. HPLC chromatographic analysis revealed that MAE contained rutin and isoquercetin. MAE dose-dependently inhibited collagen-induced platelet aggregation. MAE also attenuated serotonin secretion and thromboxane A2 formation. In addition, the extract in vivo activity showed that MAE at 100, 200, and 400 mg/kg significantly and dose-dependently attenuated thrombus formation in rat arterio-venous shunt model by 52.3% (P < 0.001), 28.3% (P < 0.01), and 19.1% (P < 0.05), respectively. Conclusions. MAE inhibit platelet activation, TXB2 formation, serotonin secretion, aggregation, and thrombus formation. The plant extract could be considered as a candidate to anti-platelet and antithrombotic agent.
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Noh JR, Kim YH, Hwang JH, Gang GT, Kim KS, Lee IK, Yun BS, Lee CH. Davallialactone protects against acetaminophen overdose-induced liver injuries in mice. Food Chem Toxicol 2013; 58:14-21. [PMID: 23583805 DOI: 10.1016/j.fct.2013.04.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Revised: 03/14/2013] [Accepted: 04/04/2013] [Indexed: 01/22/2023]
Abstract
Oxidative stress is closely associated with acetaminophen (APAP)-induced toxicity. Davallialactone (DAVA), a hispidin analog derived from the mushroom Inonotus xeranticus, has antioxidant properties. This study evaluated whether DAVA plays protective roles against APAP hepatotoxicity in mice. Pretreatments with DAVA (10 mg/kg) prior to exposures of mice to a hepatotoxic dose of 600 mg/kg APAP significantly increased survival rate compared to APAP alone. To verify this effect, mice were treated with 400 mg/kg APAP 30 min after DAVA administration and were then sacrificed after 0.5, 1, 3, and 6 h. APAP alone caused severe liver injuries as characterized by increased plasma GOT and GPT levels, ATP and GSH depletion, and peroxynitrite and 4-HNE formations. These liver damages induced by APAP were significantly attenuated by DAVA pretreatments. The GSH/GSSG ratio nearly recovered to the levels observed in non-APAP-treated mice at 6h after APAP treatment in DAVA-pretreated mice. Furthermore, while hepatic ROS levels were increased by APAP exposures, pretreatments with DAVA completely blocked ROS formation. In addition, APAP-induced sustained activations of JNK and ERK were remarkably reduced by DAVA pretreatment. In conclusion, these results suggest that DAVA plays protective roles against APAP-mediated hepatotoxicity through function as ROS scavenger.
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Affiliation(s)
- Jung-Ran Noh
- Laboratory Animal Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon 305-806, Republic of Korea
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Antiplatelet effect of phloroglucinol is related to inhibition of cyclooxygenase, reactive oxygen species, ERK/p38 signaling and thromboxane A2 production. Toxicol Appl Pharmacol 2012; 263:287-95. [PMID: 22789837 DOI: 10.1016/j.taap.2012.06.021] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Revised: 06/29/2012] [Accepted: 06/30/2012] [Indexed: 01/01/2023]
Abstract
Platelet dysfunction is a major risk factor of cardiovascular diseases such as atherosclerosis, stroke and myocardial infarction. Many antiplatelet agents are used for prevention and treatment of these diseases. In this study, phloroglucinol (2.5-25 μM) suppressed AA-induced platelet aggregation and thromboxane B(2) (TXB(2)) production, but not U46619-induced platelet aggregation. Phloroglucinol (100-250 μM) showed little cytotoxicity to platelets. Phloroglucinol inhibited the COX-1 and COX-2 activities by 45-74% and 49-72% respectively at concentrations of 10-50 μM. At concentrations of 1 and 5 μM, phloroglucinol attenuated the AA-induced ROS production in platelets by 30% and 53%, with an IC(50) of 13.8 μM. Phloroglucinol also inhibited the PMA-stimulated ROS production in PMN. Preincubation of platelets by phloroglucinol (10-25 μM) markedly attenuated the AA-induced ERK and p38 phosphorylation. Intravenous administration of phloroglucinol (2.5 and 5 μmol/mouse) suppressed the ex vivo AA-induced platelet aggregation by 57-71%. Phloroglucinol administration also elevated the mice tail bleeding time. Moreover, phloroglucinol inhibited the IL-1β-induced PGE(2) production in pulp fibroblasts. These results indicate that antiplatelet and anti-inflammatory effects of phloroglucinol are related to inhibition of COX, ROS and TXA2 production as well as ERK/p38 phosphorylation in platelets. Phloroglucinol further suppress PMA-induced ROS production in PMN. The antiplatelet effect of phloroglucinol was confirmed by ex vivo study. Clinically, the consumption of phloroglucinol-containing food/natural products as nutritional supplement may be helpful to cardiovascular health. Phloroglucinol has potential pharmacological use.
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PALOMO IVÁN, FUENTES EDUARDO, PADRÓ TERESA, BADIMON LINA. Platelets and atherogenesis: Platelet anti-aggregation activity and endothelial protection from tomatoes (Solanum lycopersicum L.). Exp Ther Med 2012; 3:577-584. [PMID: 22969932 PMCID: PMC3438755 DOI: 10.3892/etm.2012.477] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2011] [Accepted: 12/19/2011] [Indexed: 02/03/2023] Open
Abstract
In recent years, it has been shown that platelets are not only involved in the arterial thrombotic process, but also that they play an active role in the inflammatory process of atherogenesis from the beginning. The interaction between platelets and endothelial cells occurs in two manners: activated platelets unite with intact endothelial cells, or platelets in resting adhere to activated endothelium. In this context, inhibition of the platelet function (adhesion/aggregation) could contribute to the prevention of atherothrombosis, the leading cause of cardiovascular morbidity. This can be achieved with antiplatelet agents. However, at the public health level, the level of primary prevention, a healthy diet has also been shown to exert beneficial effects. Among those elements of a healthy diet, the consumption of tomatoes (Solanum lycopersicum L.) stands out for its effect on platelet anti-aggregation activity and endothelial protection, which may be beneficial for cardiovascular health. This article briefly discusses the involvement of platelets in atherogenesis and the possible mechanisms of action provided by tomatoes for platelet anti-aggregation activity and endothelial protection.
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Affiliation(s)
- IVÁN PALOMO
- Department of Clinical Biochemistry and Immunohematology, Faculty of Health Sciences, University of Talca
- Centro de Estudios en Alimentos Procesados (CEAP), Conicyt-Regional, Gore Maule, Talca,
Chile
| | - EDUARDO FUENTES
- Department of Clinical Biochemistry and Immunohematology, Faculty of Health Sciences, University of Talca
- Centro de Estudios en Alimentos Procesados (CEAP), Conicyt-Regional, Gore Maule, Talca,
Chile
| | - TERESA PADRÓ
- Cardiovascular Research Center (CSIC-ICCC), Hospital de la Santa Creu i Sant Pau-Instituto de Investigación Biomédica Sant Pau, CiberOBENU, Instituto Carlos III, Barcelona,
Spain
| | - LINA BADIMON
- Cardiovascular Research Center (CSIC-ICCC), Hospital de la Santa Creu i Sant Pau-Instituto de Investigación Biomédica Sant Pau, CiberOBENU, Instituto Carlos III, Barcelona,
Spain
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Park JY, Oh WJ, Kim MJ, Kim TH, Cho JY, Park HJ, Lee IK, Kim S, Kim GS, Kim SK, Seo GS, Yun BS, Rhee MH. Mechanism of anti-platelet activity of Oligoporus tephroleucus oligoporin A: involvement of extracellular signal-regulated kinase phosphorylation and cyclic nucleotide elevation. Platelets 2012; 23:376-85. [PMID: 22309049 DOI: 10.3109/09537104.2011.629309] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
This study investigated the inhibitory effects of oligoporin A on platelet aggregation and the mechanism of its action on downstream signaling molecules. Oligoporin A was isolated from the fruiting bodies of Oligoporus tephroleucus (Polyporaceae). The anti-platelet activities of oligoporin A were studied using rat platelets. The effects of oligoporin A on intracellular Ca(2+) mobilization, ATP release, production of the cyclic nucleotides cAMP and cGMP, extracellular signal-regulated kinase (ERK) 2 phosphorylation, and fibrinogen binding to active integrin α(II)(b)β(3) were assessed. Oligoporin A, but not oligoporins B and C, inhibited collagen-induced platelet aggregation in a concentration-dependent manner. Interestingly, oligoporin A did not affect ADP- and thrombin-induced platelet aggregations, which act on different types of membrane receptors. Granule secretion analysis demonstrated that oligoporin A significantly and dose-dependently reduced collagen-induced ATP release and intracellular Ca(2+) mobilization. Additionally, oligoporin A induced the dynamic increase in cAMP and cGMP. Increased cGMP production was further confirmed by the simultaneous production of nitric oxide. Pretreatment with oligoporin A significantly blocked collagen-induced ERK2 phosphorylation. Finally, oligoporin A vaguely diminished the binding of fibrinogen to its cognate receptor, integrin α(II)(b)β(3). The results indicate that oligoporin A inhibits only collagen-induced platelet aggregation mediated through the modulation of downstream signaling molecules. Oligoporin A may be beneficial against cardiovascular disease provoked by aberrant platelet activation.
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Affiliation(s)
- Ji Young Park
- College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, Republic of Korea
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Arunachalam S, Kim SY, Lee SH, Lee YH, Kim MS, Yun BS, Yi HK, Hwang PH. Davallialactone protects against adriamycin-induced cardiotoxicity in vitro and in vivo. J Nat Med 2011; 66:149-57. [DOI: 10.1007/s11418-011-0567-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2011] [Accepted: 07/07/2011] [Indexed: 11/29/2022]
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16
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Reactive Oxygen Species Removal Activity of Davallialactone Reduces Lipopolysaccharide-induced Pulpal Inflammation through Inhibition of the Extracellular Signal-regulated kinase 1/2 and Nuclear Factor kappa B Pathway. J Endod 2011; 37:491-5. [DOI: 10.1016/j.joen.2011.01.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2010] [Revised: 01/11/2011] [Accepted: 01/15/2011] [Indexed: 01/12/2023]
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17
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Noh JR, Lee IK, Ly SY, Yang KJ, Gang GT, Kim YH, Hwang JH, Yun BS, Lee CH. A Phellinus baumii Extract Reduces Obesity in High-Fat Diet-Fed Mice and Absorption of Triglyceride in Lipid-Loaded Mice. J Med Food 2011; 14:209-18. [DOI: 10.1089/jmf.2010.1152] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Jung-Ran Noh
- Animal Model Center, Korea Research Institute of Bioscience and Biotechnology, Iksan, Jeonbuk, Republic of Korea
- Department of Food & Nutrition, Chungnam National University, Yuseong-gu, Daejeon, Jeonbuk, Republic of Korea
| | - In-Kyoung Lee
- Division of Biotechnology, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan, Jeonbuk, Republic of Korea
| | - Sun-Yung Ly
- Department of Food & Nutrition, Chungnam National University, Yuseong-gu, Daejeon, Jeonbuk, Republic of Korea
| | - Keum-Jin Yang
- Animal Model Center, Korea Research Institute of Bioscience and Biotechnology, Iksan, Jeonbuk, Republic of Korea
| | - Gil-Tae Gang
- Animal Model Center, Korea Research Institute of Bioscience and Biotechnology, Iksan, Jeonbuk, Republic of Korea
| | - Yong-Hoon Kim
- Animal Model Center, Korea Research Institute of Bioscience and Biotechnology, Iksan, Jeonbuk, Republic of Korea
| | - Jung-Hwan Hwang
- Animal Model Center, Korea Research Institute of Bioscience and Biotechnology, Iksan, Jeonbuk, Republic of Korea
| | - Bong-Sik Yun
- Division of Biotechnology, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan, Jeonbuk, Republic of Korea
| | - Chul-Ho Lee
- Animal Model Center, Korea Research Institute of Bioscience and Biotechnology, Iksan, Jeonbuk, Republic of Korea
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Ma C, Yao Y, Yue QX, Zhou XW, Yang PY, Wu WY, Guan SH, Jiang BH, Yang M, Liu X, Guo DA. Differential proteomic analysis of platelets suggested possible signal cascades network in platelets treated with salvianolic acid B. PLoS One 2011; 6:e14692. [PMID: 21379382 PMCID: PMC3040754 DOI: 10.1371/journal.pone.0014692] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2010] [Accepted: 01/25/2011] [Indexed: 11/19/2022] Open
Abstract
Background Salvianolic acid B (SB) is an active component isolated from Danshen, a traditional Chinese medicine widely used for the treatment of cardiovascular disorders. Previous study suggested that SB might inhibit adhesion as well as aggregation of platelets by a mechanism involving the integrin α2β1. But, the signal cascades in platelets after SB binding are still not clear. Methodology/Principal Findings In the present study, a differential proteomic analysis (two-dimensional electrophoresis) was conducted to check the protein expression profiles of rat platelets with or without treatment of SB. Proteins altered in level after SB exposure were identified by MALDI-TOF MS/MS. Treatment of SB caused regulation of 20 proteins such as heat shock-related 70 kDa protein 2 (hsp70), LIM domain protein CLP-36, copine I, peroxiredoxin-2, coronin-1 B and cytoplasmic dynein intermediate chain 2C. The regulation of SB on protein levels was confirmed by Western blotting. The signal cascades network induced by SB after its binding with integrin α2β1 was predicted. To certify the predicted network, binding affinity of SB to integrin α2β1 was checked in vitro and ex vivo in platelets. Furthermore, the effects of SB on protein levels of hsp70, coronin-1B and intracellular levels of Ca(2+) and reactive oxygen species (ROS) were checked with or without pre-treatment of platelets using antibody against integrin α2β1. Electron microscopy study confirmed that SB affected cytoskeleton structure of platelets. Conclusions/Significance Integrin α2β1 might be one of the direct target proteins of SB in platelets. The signal cascades network of SB after binding with integrin α2β1 might include regulation of intracellular Ca(2+) level, cytoskeleton-related proteins such as coronin-1B and cytoskeleton structure of platelets.
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Affiliation(s)
- Chao Ma
- Shanghai Research Center for Modernization of Traditional Chinese Medicine, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, People's Republic of China
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Lee IK, Yun BS. Styrylpyrone-class compounds from medicinal fungi Phellinus and Inonotus spp., and their medicinal importance. J Antibiot (Tokyo) 2011; 64:349-59. [PMID: 21304532 DOI: 10.1038/ja.2011.2] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Members of the genera Phellinus and Inonotus, including P. linteus, P. igniarius, P. ribis, I. obliquus and I. xeranticus are well-known medicinal fungi (mushrooms) and have been used in treatment of cancer, diabetes, bacterial and viral infections and ulcer. Adverse effects of these medicinal mushrooms have not yet been reported, indicating the safe nature of these mushrooms. Polysaccharides, particularly β-glucan, are considered the compounds responsible for the biological activity of medicinal mushrooms. However, there is only a limited amount of evidence to indicate that polysaccharides are in fact responsible for the biological effects of these medicinal mushrooms. Recently, many research groups have begun identification of active low-MW compounds in medicinal mushrooms, with a focus on the yellow polyphenol pigments, which are composed of a styrylpyrone class of compounds. Interestingly, a representative group of medicinal fungi, including P. linteus, P. igniarius, P. ribis, I. obliquus and I. xeranticus were shown to produce a large and diverse range of styrylpyrone-type polyphenol pigments that exhibited various biological activities, including anti-oxidative, anti-inflammatory, cytotoxic, anti-platelet aggregation, anti-diabetic, anti-dementia and anti-viral effects. Styrylpyrone pigments in mushrooms are thought to have a role similar to that of flavonoids in plants. The unique and unprecedented carbon skeleton of fused styrylpyrone might be an attractive molecular scaffold for pharmacological applications. In this review, the structural diversity, biological effects and biogenesis of styrylpyrone-class polyphenols from medicinal fungi are described.
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Affiliation(s)
- In-Kyoung Lee
- Division of Biotechnology, College of Environmental and Bioresource Sciences, Chonbuk National University, Jeonbuk, Korea
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Noh JR, Lee IK, Kim YH, Gang GT, Hwang JH, Ly SY, Yun BS, Lee CH. Antiatherogenic Effect of Antioxidant Polyphenols from Phellinus baumii in Apolipoprotein E-Deficient Mice. ANNALS OF NUTRITION AND METABOLISM 2011; 59:145-53. [DOI: 10.1159/000334264] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2011] [Accepted: 10/04/2011] [Indexed: 11/19/2022]
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Lee IK, Han MS, Lee MS, Kim YS, Yun BS. Styrylpyrones from the medicinal fungus Phellinus baumii and their antioxidant properties. Bioorg Med Chem Lett 2010; 20:5459-61. [DOI: 10.1016/j.bmcl.2010.07.093] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2010] [Revised: 07/19/2010] [Accepted: 07/21/2010] [Indexed: 11/16/2022]
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Eidelman O, Jozwik C, Huang W, Srivastava M, Rothwell SW, Jacobowitz DM, Ji X, Zhang X, Guggino W, Wright J, Kiefer J, Olsen C, Adimi N, Mueller GP, Pollard HB. Gender dependence for a subset of the low-abundance signaling proteome in human platelets. HUMAN GENOMICS AND PROTEOMICS : HGP 2010; 2010:164906. [PMID: 20981232 PMCID: PMC2958630 DOI: 10.4061/2010/164906] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2009] [Accepted: 01/05/2010] [Indexed: 11/23/2022]
Abstract
The incidence of cardiovascular diseases is ten-times higher in males than females, although the biological basis for this gender disparity is not known. However, based on the fact that antiplatelet drugs are the mainstay for prevention and therapy, we hypothesized that the signaling proteomes in platelets from normal male donors might be more activated than platelets from normal female donors. We report here that platelets from male donors express significantly higher levels of signaling cascade proteins than platelets from female
donors. In silico connectivity analysis shows that the 24 major hubs in platelets from male donors focus on pathways associated with megakaryocytic expansion and platelet activation. By contrast, the 11 major hubs in platelets from female donors were found to be either negative or neutral for platelet-relevant processes. The difference may suggest a biological mechanism for gender discrimination in cardiovascular disease.
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Affiliation(s)
- Ofer Eidelman
- Department of Anatomy, Physiology and Genetics, USU Center for Medical Proteomics, Uniformed Services University, School of Medicine, USUHS, 4301 Jones Bridge Road, Bethesda, MD 20814, USA
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Phellinins B and C, new styrylpyrones from the culture broth of Phellinus sp. J Antibiot (Tokyo) 2010; 63:263-6. [DOI: 10.1038/ja.2010.25] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Zheng W, Zhao Y, Zhang M, Wei Z, Miao K, Sun W. Oxidative stress response ofInonotus obliquusinduced by hydrogen peroxide. Med Mycol 2009; 47:814-23. [DOI: 10.3109/13693780802653933] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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25
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Zheng W, Zhang M, Zhao Y, Miao K, Jiang H. NMR-based metabonomic analysis on effect of light on production of antioxidant phenolic compounds in submerged cultures of Inonotus obliquus. BIORESOURCE TECHNOLOGY 2009; 100:4481-4487. [PMID: 19433352 DOI: 10.1016/j.biortech.2009.04.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2009] [Revised: 04/10/2009] [Accepted: 04/13/2009] [Indexed: 05/27/2023]
Abstract
This study was designed to investigate the light effect on biosynthesis of antioxidant phenolic compounds by Inonotus obliquus grown in submerged cultures using (1)H NMR spectroscopy combining multivariate pattern recognition strategies. I. obliquus were exposed to a range of light conditions and resultant data were compared to those from field-grown sclerotia and the mycelia grown in daylight. Daylight illumination inhibited biosynthesis of davallialactone and phelligridins and other hispidin analogs. Continuous darkness enhanced the formation of phelligridins, davallialactone and inoscavins. Phelligridins and davallialactone also occurred in the mycelia grown in blue and red light with levels lower than those found in darkness. In addition, polyphenols synthesized under daylight conditions showed less potential antioxidant activity than those determined with other light regimes. These findings demonstrate that light regulates biosynthesis of polyphenols in I. obliquus and their subsequent antioxidant activities, and (1)H NMR-based metabolic profiling is a cost-effective approach for evaluating light effects on fungal metabolisms.
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Affiliation(s)
- Weifa Zheng
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, Xuzhou Normal University, Xuzhou, China.
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Phellinins A1 and A2, new styrylpyrones from the culture broth of Phellinus sp. KACC93057P: I. Fermentation, taxonomy, isolation and biological properties. J Antibiot (Tokyo) 2009; 62:631-4. [DOI: 10.1038/ja.2009.82] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Src kinase-targeted anti-inflammatory activity of davallialactone from Inonotus xeranticus in lipopolysaccharide-activated RAW264.7 cells. Br J Pharmacol 2008; 154:852-63. [PMID: 18454171 DOI: 10.1038/bjp.2008.136] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND AND PURPOSE Mushrooms are popular both as food and as a source of natural compounds of biopharmaceutical interest. Some mushroom-derived compounds such as beta-glucan have been shown to be immunostimulatory; this study explores the anti-inflammatory properties of hispidin analogues derived from the mushroom, Inonotus xeranticus. We sought to identify the molecular mechanism of action of these hispidin analogues by determining their effects on lipopolysaccharide (LPS)-mediated inflammatory responses in a macrophage cell line. EXPERIMENTAL APPROACH The production of inflammatory mediators was determined by Griess assay, reverse transcription-PCR and ELISA. The inhibitory effect of davalliactone on LPS-induced activation of signalling cascades was assessed by western blotting, immunoprecipitation and direct kinase assay. KEY RESULTS In activated RAW264.7 cells, davallialactone strongly downregulated LPS-mediated inflammatory responses, including NO production, prostaglandin E2 release, expression of proinflammatory cytokine genes and cell surface expression of co-stimulatory molecules. Davallialactone treatment did not alter cell viability or morphology. Davallialactone was found to exert its anti-inflammatory effects by inhibiting a signalling cascade that activates nuclear factor kappa B via PI3K, Akt and IKK, but not mitogen-activated protein kinases. Treatment with davallialactone affected the phosphorylation of these signalling proteins, but not their level of expression. These inhibitory effects were not due to the interruption of toll-like receptor 4 binding to CD14. In particular, davallialactone strongly inhibited the LPS-induced phosphorylation and kinase activity of Src, implying that Src may be a potential pharmacological target of davallialactone. CONCLUSIONS AND IMPLICATIONS Our data suggest that davallialactone, a small molecule found in edible mushrooms, has anti-inflammatory activity. Davallialactone can be developed as a pharmaceutically valuable anti-Src kinase agent.
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