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Dey R, Dey S, Samadder A, Saxena AK, Nandi S. Natural Inhibitors against Potential Targets of Cyclooxygenase, Lipoxygenase and Leukotrienes. Comb Chem High Throughput Screen 2022; 25:2341-2357. [PMID: 34533441 DOI: 10.2174/1386207325666210917111847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 07/14/2021] [Accepted: 07/18/2021] [Indexed: 01/27/2023]
Abstract
BACKGROUND Cyclooxygenase (COX) and Lipoxygenase (LOX) enzymes catalyze the production of pain mediators like Prostaglandins (PGs) and Leukotrienes (LTs), respectively from arachidonic acid. INTRODUCTION The COX and LOX enzyme modulators are responsible for the major PGs and LTs mediated complications like asthma, osteoarthritis, rheumatoid arthritis, cancer, Alzheimer's disease, neuropathy and Cardiovascular Syndromes (CVS). Many synthetic Nonsteroidal Anti- Inflammatory Drugs (NSAIDs) used in the treatment have serious side effects like nausea, vomiting, hyperacidity, gastrointestinal ulcers, CVS, etc. Methods: The natural inhibitors of pain mediators have great acceptance worldwide due to fewer side effects on long-term uses. The present review is an extensive study of the advantages of plantbased vs synthetic inhibitors. RESULTS These natural COX and LOX inhibitors control inflammatory response without causing side-effect-related complicacy. CONCLUSION Therefore, the natural COX and LOX inhibitors may be used as alternative medicines for the management of pain and inflammation due to their less toxicity and resistivity.
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Affiliation(s)
- Rishita Dey
- Cytogenetics and Molecular Biology Lab., Department of Zoology, University of Kalyani, Kalyani, Nadia, 741235, India
| | - Sudatta Dey
- Cytogenetics and Molecular Biology Lab., Department of Zoology, University of Kalyani, Kalyani, Nadia, 741235, India
| | - Asmita Samadder
- Cytogenetics and Molecular Biology Lab., Department of Zoology, University of Kalyani, Kalyani, Nadia, 741235, India
| | - Anil Kumar Saxena
- Global Institute of Pharmaceutical Education and Research (Affiliated to Uttarakhand Technical University), Kashipur-244713, India
| | - Sisir Nandi
- Global Institute of Pharmaceutical Education and Research (Affiliated to Uttarakhand Technical University), Kashipur-244713, India
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2
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Nattagh-Eshtivani E, Gheflati A, Barghchi H, Rahbarinejad P, Hachem K, Shalaby MN, Abdelbasset WK, Ranjbar G, Olegovich Bokov D, Rahimi P, Gholizadeh Navashenaq J, Pahlavani N. The role of Pycnogenol in the control of inflammation and oxidative stress in chronic diseases: Molecular aspects. Phytother Res 2022; 36:2352-2374. [PMID: 35583807 DOI: 10.1002/ptr.7454] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 02/23/2022] [Accepted: 03/15/2022] [Indexed: 02/05/2023]
Abstract
The prevalence of chronic diseases has increased significantly with the rising trend of sedentary lifestyles, reduced physical activity, and dietary modifications in recent decades. Inflammation and oxidative stress play a key role in the pathophysiology of several chronic diseases, such as type II diabetes, cardiovascular diseases, and hepatic conditions. Therefore, reducing inflammation and oxidative stress may be beneficial in the prevention and treatment of various chronic disorders. Since chronic diseases are not completely curable, various methods have been proposed for their control. Complementary therapies and the use of natural antioxidant and antiinflammatory compounds are among these novel approaches. Pycnogenol (PYC) is a natural compound that could control inflammation and oxidative stress. Furthermore, some previous studies have shown that PYC could effectively reduce inflammation through signaling the downstream of insulin receptors, inhibiting the phosphorylation of the serine residues of insulin receptor substrate-1, reducing pro-inflammatory cytokines and oxidative stress indices through the stimulation of antioxidant pathways, increasing free radical scavenging activities, preventing lipid peroxidation, and protecting the erythrocytes in glucose-6-phosphate dehydrogenase-deficient individuals, although these effects have not been fully proved. The present study aimed to comprehensively review the evidence concerning the positive physiological and pharmacological properties of PYC, with an emphasis on the therapeutic potential of this natural component for enhancing human health.
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Affiliation(s)
- Elyas Nattagh-Eshtivani
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Nutrition, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Alireza Gheflati
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Nutrition, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hanieh Barghchi
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Nutrition, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Pegah Rahbarinejad
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Nutrition, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Kadda Hachem
- Laboratory of Biotoxicology, Pharmacognosy and Biological Valorization of Plants (LBPVBP), Faculty of Sciences, University of Saida- Dr Moulay Tahar, Saida, Algeria
| | - Mohammed Nader Shalaby
- Biological Sciences and Sports Health Department, Faculty of Physical Education, Suez Canal University, Ismailia, Egypt
| | - Walid Kamal Abdelbasset
- Department of Health and Rehabilitation Sciences, College of Applied Medical Sciences, Prince Sattam bin Abdulaziz University, Al Kharj, Saudi Arabia
- Department of Physical Therapy, Kasr Al-Aini Hospital, Cairo University, Giza, Egypt
| | - Golnaz Ranjbar
- Department of Nutrition, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Dmitry Olegovich Bokov
- Institute of Pharmacy, Sechenov First Moscow State Medical University, Moscow, Russian Federation
- Laboratory of Food Chemistry, Federal Research Center of Nutrition, Biotechnology and Food Safety, Moscow, Russian Federation
| | - Pegah Rahimi
- Department of Clinical Pharmacy, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
| | | | - Naseh Pahlavani
- Health Sciences Research Center, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
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Leisegang K, Finelli R. Alternative medicine and herbal remedies in the treatment of erectile dysfunction: A systematic review. Arab J Urol 2021; 19:323-339. [PMID: 34552783 PMCID: PMC8451697 DOI: 10.1080/2090598x.2021.1926753] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 03/02/2021] [Indexed: 12/17/2022] Open
Abstract
Objectives: To systematically review and discuss the current evidence from placebo-controlled clinical trials that investigated the use of alternative medicines and herbal remedies in the management of erectile dysfunction (ED). Methods: A Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA)-based systematic review using specific keyword combinations was conducted on the PubMed and Scopus databases. Randomised controlled trials investigating herbal medicine in at least one group and using the International Index of Erectile Function (IIEF) as an outcome in patients primarily diagnosed with ED were included for review. Results: Following the literature search, screening and eligibility analysis, a total of 42 articles were included. The 42 articles were categorised as single herb extractions (n = 14), combination herbal formula (n = 5), combination of herbal formula and non-herbal nutraceuticals (n = 7), non-herbal nutraceuticals (n = 5), acupuncture and moxibustion (n = 2), diet and nutrition (n = 3), exercise (n = 5), and topical treatments (n = 1). Based on the results, Korean ginseng, Pygnogenol and Prelox, Tribulus terrestris, Lepidium meyenii, L-arginine, acupuncture and lifestyle interventions were the more predominantly investigated treatments interventions for ED. Conclusions: Panax ginseng, Pygnogenol, Prelox and Tribulus terrestris have promising evidence as herbal products, alongside L-arginine as a nutritional supplement, for ED based on IIEF outcomes, and warrant further clinical investigation. The mechanisms of action remain unclear, but each of these appears to in part increase nitric oxide synthesis. Importantly, improved diet and exercise should be considered, particularly in patients with obesity or diabetes mellitus.
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Affiliation(s)
- Kristian Leisegang
- School of Natural Medicine, Faculty of Community and Health Sciences, University of the Western Cape, Cape Town, South Africa
| | - Renata Finelli
- American Center for Reproductive Medicine, Glickman Urological & Kidney Institute, Cleveland Clinic, Cleveland, OH, USA
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Haykal M, Matsumori A, Saleh A, Fayez M, Negm H, Shalaby M, Bassuony S. Diagnosis and treatment of HCV heart diseases. Expert Rev Cardiovasc Ther 2021; 19:493-499. [PMID: 33861939 DOI: 10.1080/14779072.2021.1917383] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Hepatitis C virus (HCV) infection is an important cause of a variety of otherwise unexplained heart diseases and myocardial injury. A high prevalence of HCV infection has been noted in patients with hypertrophic cardiomyopathy, dilated cardiomyopathy, arrhythmogenic right ventricular dysplasia/cardiomyopathy and myocarditis. Various arrhythmias, conduction disturbances and QT prolongation were also associated with HCV infection. A possible role of HCV infection in the pathogenesis of diabetes and atherosclerosis, and the role of immunogenetics of HCV cardiomyopathies is discussed. Recent studies suggest that mononuclear cells may be the major target of HCV, and clinical applications to test this new hypothesis are discussed. AREAS COVERED In this review, we will evaluate the evidence that HCV causes various cardiovascular diseases, and discuss on the pathogenesis of these disorders. EXPERT OPINION HCV is the cause of many different forms of heart disease worldwide, but their existence has not been recognized by most of cardiologists. The recognition and diagnosis are indispensable for the early treatment of these diseases. The diverse clinical manifestation of HCV infection and the presence of multiple extrahepatic disease syndromes could be explained by a new hypothesis that the target of HCV is leukocytes.
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Affiliation(s)
- Mohammad Haykal
- Cardiovascular and Ultrasonography Research Unit (CURU), Research Institute of Ophthalmology (RIO), Cairo, Egypt
| | - Akira Matsumori
- Clinical Research Center, Kyoto Medical Center, Kyoto, Japan
| | - Ahmed Saleh
- Cardiovascular and Ultrasonography Research Unit (CURU), Research Institute of Ophthalmology (RIO), Cairo, Egypt
| | - Moatez Fayez
- Cardiovascular and Ultrasonography Research Unit (CURU), Research Institute of Ophthalmology (RIO), Cairo, Egypt
| | - Hany Negm
- Cardiovascular and Ultrasonography Research Unit (CURU), Research Institute of Ophthalmology (RIO), Cairo, Egypt
| | - Mohammad Shalaby
- Cardiovascular and Ultrasonography Research Unit (CURU), Research Institute of Ophthalmology (RIO), Cairo, Egypt
| | - Samar Bassuony
- Cardiovascular and Ultrasonography Research Unit (CURU), Research Institute of Ophthalmology (RIO), Cairo, Egypt
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Thaichinda S, Tancharoen S, Kanekura T, Higashi Y, Dararat P, Kikuchi K, Nararatwanchai T. Pinus maritima Extract Induces Apoptosis in Human Malignant Melanoma Cells via ROS/Caspase-3 Signaling. Nat Prod Commun 2020. [DOI: 10.1177/1934578x20926889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Melanoma is the most aggressive type of skin cancer due to its rapid metastasis with a high recurrence rate following conventional therapy. Pine bark extract (PBE) from Pinus maritima contains numerous phenolic compounds and functions as a potent antioxidant. The present study aimed to analyze the potential anticancer properties of PBE on human malignant melanoma A375 cells. The chemical composition of PBE was determined by high-performance liquid chromatography/photodiode array detector. The effects of PBE on cell death, migration, and invasion were determined using xCELLigence Technology real-time cell analysis. Annexin/propidium iodide flow cytometry and Hoechst 33342 staining were conducted to detect cell apoptosis. PBE induced apoptosis and inhibited cell migration and invasion. Cleaved caspase-3 expression and activity were significantly increased ( P < 0.01) in cells treated with PBE compared with control cells. PBE ameliorated hydrogen peroxide (H2O2)-induced reactive oxygen species (ROS) formation. Treatment of the cells with PBE in the presence of H2O2 led to significant ( P < 0.001) reduction of matrix metallopeptidase-9, which is a mediator responsible for advanced melanoma. PBE induces A375 programmed cell death and suppresses cellular invasion by attenuating the ROS-dependent pathway associated with MMP-9 reduction.
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Affiliation(s)
- Sunisa Thaichinda
- Department of Anti-aging Medicine, School of Anti-Aging and Regenerative Medicine, Mae Fah Luang University, Muang, Chiang Rai, Thailand
| | - Salunya Tancharoen
- Department of Pharmacology, Faculty of Dentistry, Mahidol University, Rajthevee, Bangkok, Thailand
| | - Takuro Kanekura
- Department of Dermatology, Kagoshima University Medical and Dental Science, Sakuragaoka, Kagoshima, Japan
| | - Yuko Higashi
- Department of Dermatology, Kagoshima University Medical and Dental Science, Sakuragaoka, Kagoshima, Japan
| | - Pornpen Dararat
- Department of Pharmacology, Faculty of Dentistry, Mahidol University, Rajthevee, Bangkok, Thailand
| | - Kiyoshi Kikuchi
- Division of Brain Science, Department of Physiology, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Thamthiwat Nararatwanchai
- Department of Anti-aging Medicine, School of Anti-Aging and Regenerative Medicine, Mae Fah Luang University, Muang, Chiang Rai, Thailand
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Pourmasoumi M, Hadi A, Mohammadi H, Rouhani MH. Effect of pycnogenol supplementation on blood pressure: A systematic review and meta-analysis of clinical trials. Phytother Res 2019; 34:67-76. [PMID: 31637782 DOI: 10.1002/ptr.6515] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 08/31/2019] [Accepted: 09/04/2019] [Indexed: 01/30/2023]
Abstract
Several studies investigated the impact of pycnogenol on blood pressure. Nevertheless, the results are inconclusive. The aim of the present systematic review and meta-analysis was to clarify the effect of pycnogenol supplementation on blood pressure. PubMed, Scopus, Web of Science, and Google Scholar were systematically searched until March 2018 to find clinical trials, which examined the effect of pycnogenol supplementation on systolic and diastolic blood pressure in adults. A subgroup analysis was applied to find out potential sources of interstudy heterogeneity. A total of 12 clinical trials (922 participants) were included in the meta-analysis. Pooled analysis suggested that pycnogenol supplementation can reduced systolic blood pressure (SBP) of (-3.22 mmHg; 95% CI [-5.52, -0.92]) and diastolic blood pressure (DBP; -1.91 mmHg; 95% CI [-3.64, -0.18]). Effect of pycnogenol on SBP was more pronounce in subgroup in which pycnogenol was administered along with other treatments. A significant effect of pycnogenol on DBP in studies with >12-week duration, whereas this favorable effect was not observed in subgroup with ≤12-week supplementation. The present systematic review and meta-analysis suggest that pycnogenol had a favorable effect on SBP and DBP. Further, high quality randomized clinical trials are needed to confirm this result.
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Affiliation(s)
- Makan Pourmasoumi
- Gastrointestinal and Liver Diseases Research Center, Guilan University of Medical Sciences, Rasht, Iran
| | - Amir Hadi
- Halal Research Center of IRI, FDA, Tehran, Iran.,Food Security Research Center, Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hamed Mohammadi
- Department of Clinical Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Hossein Rouhani
- Food Security Research Center, Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
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7
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Verlaet A, van der Bolt N, Meijer B, Breynaert A, Naessens T, Konstanti P, Smidt H, Hermans N, Savelkoul HFJ, Teodorowicz M. Toll-Like Receptor-Dependent Immunomodulatory Activity of Pycnogenol ®. Nutrients 2019; 11:E214. [PMID: 30678156 PMCID: PMC6412808 DOI: 10.3390/nu11020214] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/07/2019] [Accepted: 01/10/2019] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Pycnogenol® (PYC), an extract of French maritime pine bark, is widely used as a dietary supplement. PYC has been shown to exert anti-inflammatory actions via inhibiting the Toll-like receptor 4 (TLR4) pathway. However, the role of the other receptors from the TLR family in the immunomodulatory activity of PYC has not been described so far. AIM The aim of this study was to investigate whether PYC might exert its immunomodulatory properties through cell membrane TLRs (TLR1/2, TLR5, and TLR2/6) other than TLR4. Moreover, the effect of gastrointestinal metabolism on the immunomodulatory effects of PYC was investigated. FINDINGS We showed that intact non-metabolized PYC dose-dependently acts as an agonist of TLR1/2 and TLR2/6 and as a partial agonist of TLR5. PYC on its own does not agonize or antagonize TLR4. However, after the formation of complexes with lipopolysaccharides (LPS), it is a potent activator of TLR4 signaling. Gastrointestinal metabolism of PYC revealed the immunosuppressive potential of the retentate fraction against TLR1/2 and TLR2/6 when compared to the control fraction containing microbiota and enzymes only. The dialyzed fraction containing PYC metabolites revealed the capacity to induce anti-inflammatory IL-10 secretion. Finally, microbially metabolized PYC affected the colonic microbiota composition during in vitro gastrointestinal digestion. CONCLUSIONS This study showed that gastrointestinal metabolism of PYC reveals its biological activity as a potential inhibitor of TLRs signaling. The results suggest that metabolized PYC acts as a partial agonist of TLR1/2 and TLR2/6 in the presence of the microbiota-derived TLR agonists (retentate fraction) and that it possesses anti-inflammatory potential reflected by the induction of IL-10 from THP-1 macrophages (dialysate fraction).
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Affiliation(s)
- Annelies Verlaet
- Department of Pharmaceutical Sciences, Laboratory of Nutrition and Functional Food Science, University of Antwerp, 2610 Wilrijk, Belgium.
| | - Nieke van der Bolt
- Department of Cell Biology and Immunology, Wageningen University & Research, 6708 WD Wageningen, The Netherlands.
| | - Ben Meijer
- Department of Cell Biology and Immunology, Wageningen University & Research, 6708 WD Wageningen, The Netherlands.
| | - Annelies Breynaert
- Department of Pharmaceutical Sciences, Laboratory of Nutrition and Functional Food Science, University of Antwerp, 2610 Wilrijk, Belgium.
| | - Tania Naessens
- Department of Pharmaceutical Sciences, Laboratory of Nutrition and Functional Food Science, University of Antwerp, 2610 Wilrijk, Belgium.
| | - Prokopis Konstanti
- Laboratory of Microbiology, Wageningen University& Research, 6708 WE Wageningen, The Netherlands.
| | - Hauke Smidt
- Laboratory of Microbiology, Wageningen University& Research, 6708 WE Wageningen, The Netherlands.
| | - Nina Hermans
- Department of Pharmaceutical Sciences, Laboratory of Nutrition and Functional Food Science, University of Antwerp, 2610 Wilrijk, Belgium.
| | - Huub F J Savelkoul
- Department of Cell Biology and Immunology, Wageningen University & Research, 6708 WD Wageningen, The Netherlands.
| | - Malgorzata Teodorowicz
- Department of Cell Biology and Immunology, Wageningen University & Research, 6708 WD Wageningen, The Netherlands.
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Hadi A, Pourmasoumi M, Mohammadi H, Javaheri A, Rouhani MH. The impact of pycnogenol supplementation on plasma lipids in humans: A systematic review and meta-analysis of clinical trials. Phytother Res 2018; 33:276-287. [PMID: 30456865 DOI: 10.1002/ptr.6234] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 09/08/2018] [Accepted: 09/21/2018] [Indexed: 12/21/2022]
Abstract
The effects of pycnogenol on plasma lipids are controversial. A systematic review and meta-analysis of clinical trials were conducted to obtain a conclusive result in humans. PubMed, Scopus, and Google Scholar were systematically searched until March 2018, to explore the clinical trials that examined the effect of pycnogenol supplementation on lipid parameters among adult human. Methodological quality of the eligible studies was evaluated using the Cochrane Collaboration's tool. To estimate the effect size, changes in blood lipids were implemented. Results were pooled using a random effects model. Potential sources of heterogeneity were explored by subgroup analysis. A systematic review and meta-analysis of 14 clinical trials with 1,065 participants suggested a significant increase in plasma concentration of high density lipoprotein cholesterol (HDL-C; 3.27 mg/dL; 95% CI [0.19, 6.36]; p = 0.038). In contrast, plasma levels of total cholesterol (TC; -4.45 mg/dL, 95% CI [-11.24, 2.34]; p = 0.199), triacylglycerol (TAG; -3.64 mg/dL; 95% CI [-17.89, 10.61]; p = 0.616), and low density lipoprotein cholesterol (LDL-C; -3.61 mg/dl; 95% CI [-8.76, 1.55]; p = 0.171) were not altered. Adjustment for confounding variables was poor in included studies. Also, these studies did not assess dietary lipid intake. The results indicate that pycnogenol supplementation improves levels of HDL-C; however, the changes in TC, TAG, and LDL-C were not clinically relevant. Since there are few phytochemicals that have a significant increasing effect on HDL-C levels, pycnogenol may have important role in prevention of cardiovascular diseases.
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Affiliation(s)
- Amir Hadi
- Halal Research Center of IRI, FDA, Tehran, Iran
| | - Makan Pourmasoumi
- Halal Research Center of IRI, FDA, Tehran, Iran.,Gastrointestinal and Liver Diseases Research Center (GLDRC), Guilan University of Medical Sciences, Rasht, Iran
| | - Hamed Mohammadi
- Department of Clinical Nutrition, School of Nutrition and Food Science, Students' Research Committee, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Aftab Javaheri
- Food Science, Technology and Business, Faculty of Engineering Technology, Technology Campus Ghent, Katholieke Universiteit Leuven, Leuven, Belgium
| | - Mohammad Hossein Rouhani
- Department of Community Nutrition, School of Nutrition and Food Science, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
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Yonezawa Y, Miyashita T, Nejishima H, Takeda Y, Imai K, Ogawa H. Anti-inflammatory effects of olive-derived hydroxytyrosol on lipopolysaccharide-induced inflammation in RAW264.7 cells. J Vet Med Sci 2018; 80:1801-1807. [PMID: 30298817 PMCID: PMC6305503 DOI: 10.1292/jvms.18-0250] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The control of inflammation, which arises from complex biological responses to harmful
stimuli, is an important determinant of both clinical outcomes and patient comfort.
However, the side effects of many current therapies such as non-steroidal
anti-inflammatory drugs mean that new safe treatments are required. We previously reported
that 12.5 µg/ml hydroxytyrosol (HT) suppressed gene
expression of the inducible nitric oxide (NO) synthase (iNOS) isoform and NO production,
in mouse peritoneal macrophages treated with lipopolysaccharide (LPS), where nuclear
factor-κB (NF-κB) gene expression was not altered. The present study evaluated the
anti-inflammatory effects of various concentrations of HT in LPS-induced RAW264.7 mouse
macrophages. HT suppressed NF-κB signaling and downregulated LPS-mediated expression of
iNOS, cyclooxygenase-2, tumor necrosis factor alpha, and interleukin-1β at 12.5
µg/ml, resulting in reduced production of NO and
prostaglandin E2. At lower concentrations, HT seemed to act via another
signaling pathway to regulate the inflammatory response. In contrast, HT did not suppress
LPS-induced expression of phosphorylated p44/42 mitogen-activated protein kinase. This
study showed that HT had anti-inflammatory effects on LPS-stimulated RAW264.7 cells. HT is
already available as a nutritional supplement and no toxic effects have been reported.
Hence, HT represents a potential novel anti-inflammatory agent.
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Affiliation(s)
- Yutaka Yonezawa
- Pharmacokinetics and Safety Department, Drug Research Center, Kaken Pharmaceutical Co., Ltd., 301, Gensuke, Fujieda, Shizuoka 426-8646, Japan.,United Graduate School of Veterinary Sciences, Gifu University, Yanagido, Gifu, Gifu 501-1193, Japan
| | - Taishi Miyashita
- Pharmacokinetics and Safety Department, Drug Research Center, Kaken Pharmaceutical Co., Ltd., 301, Gensuke, Fujieda, Shizuoka 426-8646, Japan
| | - Hiroaki Nejishima
- Pharmacokinetics and Safety Department, Drug Research Center, Kaken Pharmaceutical Co., Ltd., 301, Gensuke, Fujieda, Shizuoka 426-8646, Japan
| | - Yohei Takeda
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, 2-11 Inada, Obihiro, Hokkaido 080-8555, Japan
| | - Kunitoshi Imai
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, 2-11 Inada, Obihiro, Hokkaido 080-8555, Japan
| | - Haruko Ogawa
- United Graduate School of Veterinary Sciences, Gifu University, Yanagido, Gifu, Gifu 501-1193, Japan.,Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, 2-11 Inada, Obihiro, Hokkaido 080-8555, Japan
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10
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Jessberger S, Högger P, Genest F, Salter DM, Seefried L. Cellular pharmacodynamic effects of Pycnogenol® in patients with severe osteoarthritis: a randomized controlled pilot study. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 17:537. [PMID: 29246219 PMCID: PMC5732384 DOI: 10.1186/s12906-017-2044-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 12/05/2017] [Indexed: 01/09/2023]
Abstract
BACKGROUND The standardized maritime pine bark extract (Pycnogenol®) has previously shown symptom alleviating effects in patients suffering from moderate forms of knee osteoarthritis (OA). The cellular mechanisms for this positive impact are so far unknown. The purpose of the present randomized pilot controlled study was to span the knowledge gap between the reported clinical effects of Pycnogenol® and its in vivo mechanism of action in OA patients. METHODS Thirty three patients with severe OA scheduled for a knee arthroplasty either received 100 mg of Pycnogenol® twice daily or no treatment (control group) three weeks before surgery. Cartilage, synovial fluid and serum samples were collected during surgical intervention. Relative gene expression of cartilage homeostasis markers were analyzed in the patients' chondrocytes. Inflammatory and cartilage metabolism mediators were investigated in serum and synovial fluid samples. RESULTS The oral intake of Pycnogenol® downregulated the gene expression of various cartilage degradation markers in the patients' chondrocytes, the decrease of MMP3, MMP13 and the pro-inflammatory cytokine IL1B were statistically significant (p ≤ 0.05). Additionally, protein concentrations of ADAMTS-5 in serum were reduced significantly (p ≤ 0.05) after three weeks intake of the pine bark extract. CONCLUSIONS This is the first report about positive cellular effects of a dietary supplement on key catabolic and inflammatory markers in patients with severe OA. The results provide a rational basis for understanding previously reported clinical effects of Pycnogenol® on symptom scores of patients suffering from OA. TRIAL REGISTRATION ISRCTN10754119 . Retrospectively registered 08/10/2015.
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Affiliation(s)
- Steffen Jessberger
- Institut für Pharmazie und Lebensmittelchemie, Universität Würzburg, Am Hubland C7, 97074 Würzburg, Germany
| | - Petra Högger
- Institut für Pharmazie und Lebensmittelchemie, Universität Würzburg, Am Hubland C7, 97074 Würzburg, Germany
| | - Franca Genest
- Department of Orthopedics, Universität Würzburg, Orthopedic Center for Musculoskeletal Research, Brettreichstraße 11, 97074 Würzburg, Germany
| | - Donald M. Salter
- Centre for Genomic and Experimental Medicine, University of Edinburgh, Osteoarticular Research Group, Crewe Road, Edinburgh, EH4 2XU UK
| | - Lothar Seefried
- Department of Orthopedics, Universität Würzburg, Orthopedic Center for Musculoskeletal Research, Brettreichstraße 11, 97074 Würzburg, Germany
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Visser J, van Staden PJ, Soma P, Buys AV, Pretorius E. The stabilizing effect of an oligomeric proanthocyanidin on red blood cell membrane structure of poorly controlled Type II diabetes. Nutr Diabetes 2017; 7:e275. [PMID: 28504711 PMCID: PMC5518807 DOI: 10.1038/nutd.2017.25] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 03/17/2017] [Accepted: 03/24/2017] [Indexed: 02/06/2023] Open
Abstract
Type II diabetes (T2D) is a pandemic characterized by pathological circulating inflammatory markers, high-glucose levels and oxidative stress. The hematological system is especially vulnerable to these aberrant circulating molecules, and erythrocytes (RBCs) show aberrant rheology properties, owing to the direct contact with these molecules. Pathological levels of circulating inflammatory markers in T2D therefore have a direct effect on the molecular and cellular structure of RBCs. Previous research has suggested that antioxidants may reduce oxidative stress that results from the pathological inflammatory markers. Particularly, polyphenol antioxidants like oligomeric proanthocyanidins (OPCs) may act as a hydroxyl mopping agent, and may have a positive effect on the deformability and membrane protein structure of RBCs from T2D. In this paper, we look at the effect of one such agent, Pinus massoniana bark extract (standardized to 95% oligomeric proanthicyanidins), on the RBC membrane structures and RBC shape changes of T2D, after laboratory exposure at physiological levels. Our methods of choice were atomic force microscopy and scanning electron microscopy to study RBC elasticity and ultrastructure. Results showed that in our hands, this OPC could change both the eryptotic nature of the RBCs, as viewed with scanning electron microscopy, as well as the elasticity. We found a significant difference in variation between the elasticity measurement values between the RBCs before and after OPC exposure (P-value <0.0001). In conclusion, the data from both these techniques therefore suggest that OPC usage might contribute to the improvement of RBC functioning.
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Affiliation(s)
- J Visser
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Arcadia, South Africa
| | - P J van Staden
- Department of Statistics, Faculty of Natural and Agricultural Sciences, University of Pretoria, Hatfield, South Africa
| | - P Soma
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Arcadia, South Africa
| | - A V Buys
- Unit for Microscopy and Microanalysis, University of Pretoria, Arcadia, South Africa
| | - E Pretorius
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa
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12
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Ben Khedir S, Mzid M, Bardaa S, Moalla D, Sahnoun Z, Rebai T. In Vivo Evaluation of the Anti-Inflammatory Effect of Pistacia lentiscus Fruit Oil and Its Effects on Oxidative Stress. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2016; 2016:6108203. [PMID: 28070202 PMCID: PMC5192325 DOI: 10.1155/2016/6108203] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 11/02/2016] [Indexed: 01/24/2023]
Abstract
In order to find new topical anti-inflammatory agents, we had recourse to a medicinal plant. This work was designed to determine the topical anti-inflammatory effect of Pistacia lentiscus fruit oil (PLFO), using carrageenan-induced paw edema rat model, and to evaluate its effects on oxidative stress. The topical anti-inflammatory activity of PLFO was compared to Inflocine® and estimated by measuring the diameter of paw edema, for 5 hours at a 1-hour interval. After that the rats were scarified and the inflamed paw tissue was removed for the exploration of some parameters of oxidative stress and histopathology. PLFO showed a significant anti-inflammatory activity in comparison with the Inflocine. The percentages of edema inhibition were 70% and % 51.5% (p < 0.01), respectively, after five hours. The treatment with PLFO and Inflocine led to significant increases (p ≤ 0.05) in the activities of CAT, SOD, and GPX and significant decreases in the MDA level and AOPP activity in the paw tissue after Carr injection, in comparison with the Carr group. Therefore, our findings demonstrate that PLFO might accelerate the development of new drugs which could be used scientifically as a source for natural health products in the treatment of topical inflammation.
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Affiliation(s)
- Sameh Ben Khedir
- Research Unit of Anatomy-Histology and Embryology, Faculty of Medicine, Sfax, Tunisia
| | - Masarra Mzid
- Research Unit of Anatomy-Histology and Embryology, Faculty of Medicine, Sfax, Tunisia
| | - Sana Bardaa
- Research Unit of Pharmacology, Faculty of Medicine, Sfax, Tunisia
| | - Dorsaf Moalla
- Research Unit of Pharmacology, Faculty of Medicine, Sfax, Tunisia
| | - Zouheir Sahnoun
- Research Unit of Pharmacology, Faculty of Medicine, Sfax, Tunisia
| | - Tarek Rebai
- Research Unit of Anatomy-Histology and Embryology, Faculty of Medicine, Sfax, Tunisia
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13
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Potent Antiarthritic Properties of Phloretin in Murine Collagen-Induced Arthritis. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 2016:9831263. [PMID: 28044086 PMCID: PMC5164908 DOI: 10.1155/2016/9831263] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 11/08/2016] [Indexed: 12/19/2022]
Abstract
In the exploration of potential therapeutic agents for rheumatoid arthritis (RA), DBA/1J mice are used as the RA model of collagen-induced arthritis (CIA). Phloretin, a flavonoid compound extracted from Prunus mandshurica, has been found to exhibit anti-inflammatory activity, making it a potential candidate for treatment of RA. The objective of this study was to evaluate the therapeutic effects of phloretin on CIA mice. CIA mice were dosed daily with phloretin at either 50 or 100 mg/kg among two treatment groups. CIA treated mice showed mitigation of clinical symptoms of RA in addition to reduced inflammation of hind-limbs compared to mice who did not receive phloretin. Histological analysis showed that phloretin suppressed the severity of RA and effectively mitigated joint inflammation and cartilage- and bone-destruction via reducing proinflammatory cytokine productions (TNF-α, IL-6, IL-1β, and IL-17). This was at least partially mediated by causing inadequate splenocyte activation and proliferation. Moreover, phloretin-treated CIA mice showed decreased oxidative stress and diminished levels of malondialdehyde (MDA) and hydrogen peroxide (H2O2) in paw tissues as well as reduced productivity of anti-collagen antibodies in serum. We have concluded that phloretin could be a potent and effective antiarthritis agent, demonstrating anti-inflammatory, antioxidative, and immunomodulatory effects in CIA mice.
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Ezzikouri S, Jadid FZ, Hamdi S, Wakrim L, Tsukiyama-Kohara K, Benjelloun S. Supplementing Conventional Treatment with Pycnogenol® May Improve Hepatitis C Virus-Associated Type 2 Diabetes: A Mini Review. J Clin Transl Hepatol 2016; 4:228-233. [PMID: 27777890 PMCID: PMC5075005 DOI: 10.14218/jcth.2016.00021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 06/20/2016] [Accepted: 07/07/2016] [Indexed: 12/20/2022] Open
Abstract
Hepatitis C virus (HCV) infection and type 2 diabetes mellitus (T2DM) present a significant health burden, with increasing complications and mortality rates worldwide. Pycnogenol® (PYC), a natural product, possesses antidiabetic and antiviral properties that may improve HCV-associated T2DM. In this review, we present previously published data on the effectiveness of PYC against HCV replication and T2DM. We believe that supplementing conventional treatment with PYC may improve the current HCV therapy, attenuate HCV-associated T2DM, and reduce the risk of complications such as cirrhosis or hepatocellular carcinoma and cardiovascular disease.
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Affiliation(s)
- Sayeh Ezzikouri
- Virology Unit, Viral Hepatitis Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
- *Correspondence to: Sayeh Ezzikouri, Viral Hepatitis Laboratory, Institut Pasteur du Maroc, 1 Place Louis Pasteur, Casablanca 20360, Morocco. Tel: +212-5-27016076, +212-5-22434450, Fax: +212-5-22260957, E-mail:
| | - Fatima Zahra Jadid
- Virology Unit, Viral Hepatitis Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Salsabil Hamdi
- Virology Unit, Viral Hepatitis Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Lahcen Wakrim
- Virology Unit, Immunovirology Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Kyoko Tsukiyama-Kohara
- Laboratory of Animal Hygiene, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
- Transboundary Animal Diseases Centre, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
| | - Soumaya Benjelloun
- Virology Unit, Viral Hepatitis Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
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15
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Chu H, Tang Q, Huang H, Hao W, Wei X. Grape-seed proanthocyanidins inhibit the lipopolysaccharide-induced inflammatory mediator expression in RAW264.7 macrophages by suppressing MAPK and NF-κb signal pathways. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2016; 41:159-166. [PMID: 26708200 DOI: 10.1016/j.etap.2015.11.018] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 11/27/2015] [Accepted: 11/28/2015] [Indexed: 06/05/2023]
Abstract
Grape-seed proanthocyanidins (GSPs) have been shown to function as an anti-oxidant and anti-inflammatory agent with little toxicity in vivo and in vitro. However, little is known about their anti-inflammatory properties and mechanisms of action. The specific focus being its effects on the MAP kinases and nuclear factor-kappaB (NF-κB) signal transduction pathways in lipopolysaccharide (LPS) -stimulated RAW264.7 cells. GSPs extract has been found to suppress the mRNA expression of pro-inflammatory cytokines like tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β) and inflammatory molecule of cyclooxygenase-2 (COX-2) while mRNA level of IL-10 was greatly promoted. Furthermore, GSPs extract inhibited the expression of phosphorylated ERK, JNK and P38, as well as phosphorylated IKKα/β and NF-κB p65 subunit. In conclusion, our results show that GSPs extract showed its anti-inflammatory and immunomodulatory properties by suppressing the activation of MAP kinases and NF-κB signal transduction pathways.
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Affiliation(s)
- Hongqian Chu
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing 100191, PR China
| | - Qiuqiong Tang
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing 100191, PR China
| | - Hongpeng Huang
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing 100191, PR China
| | - Weidong Hao
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing 100191, PR China.
| | - Xuetao Wei
- Department of Toxicology, School of Public Health, Peking University, Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing 100191, PR China.
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16
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Patra JK, Kim SH, Hwang H, Choi JW, Baek KH. Volatile compounds and antioxidant capacity of the bio-oil obtained by pyrolysis of Japanese red pine (pinus densiflora siebold and zucc.). Molecules 2015; 20:3986-4006. [PMID: 25738540 PMCID: PMC6272219 DOI: 10.3390/molecules20033986] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 02/13/2015] [Accepted: 02/25/2015] [Indexed: 11/29/2022] Open
Abstract
In the present study, sawdust bio-oil (SBO) manufactured by fast pyrolysis of Japanese red pine (Pinus densiflora Siebold and Zucc.) sawdust was analyzed for its volatile chemical compound composition and evaluated for its free radical scavenging potential, inhibition of lipid peroxidation and reducing power. Gas chromatography and mass spectroscopy revealed 29 volatile compounds, comprising 97.6% of the total volatile compounds in SBO. The antioxidant potential of SBO in terms of IC50 values was 48.44 µg/mL for hydroxyl radical scavenging, 89.52 µg/mL for 1,1-diphenyl-2-picrylhydraxyl radical scavenging, 94.23 µg/mL for 2,2'-azino-bis[3-ethylbenzothiazoline-6-sulphonic acid] radical scavenging, and 136.06 µg/mL for superoxide radical scavenging activity. The total phenol content in SBO was 5.7% gallic acid equivalent. Based on the composition of its volatile compounds, high free radical scavenging potential and antioxidant properties, SBO could be used as a source of antioxidant compounds, flavoring agents and nutraceuticals in the food, pharmaceutical, and cosmetic industries.
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Affiliation(s)
- Jayanta Kumar Patra
- School of Biotechnology, Yeungnam University, Gyeongsan, Gyeongbuk 712-749, Korea.
| | - Sung Hong Kim
- Analysis Research Division, Daegu Center, Korea Basic Science Institute, Daegu 702-701, Korea.
| | - Hyewon Hwang
- Department of Forest Sciences, College of Agriculture and Life Science, Seoul National University, Seoul 151-921, Korea.
| | - Joon Weon Choi
- Department of Forest Sciences, College of Agriculture and Life Science, Seoul National University, Seoul 151-921, Korea.
- Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang, Gangwon-do 232-916, Korea.
| | - Kwang-Hyun Baek
- School of Biotechnology, Yeungnam University, Gyeongsan, Gyeongbuk 712-749, Korea.
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17
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Ezzikouri S, Nishimura T, Kohara M, Benjelloun S, Kino Y, Inoue K, Matsumori A, Tsukiyama-Kohara K. Inhibitory effects of Pycnogenol® on hepatitis C virus replication. Antiviral Res 2014; 113:93-102. [PMID: 25446333 DOI: 10.1016/j.antiviral.2014.10.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 10/24/2014] [Accepted: 10/31/2014] [Indexed: 01/29/2023]
Abstract
Chronic hepatitis C virus (HCV) infection increases the risk of liver cirrhosis and hepatocellular carcinoma. In the last decade, the current standard HCV treatment, pegylated interferon and ribavirin, have limited efficacy and significant side effects. Novel direct acting antivirals show promise, but escape mutants are expected, along with potential side effects. Pycnogenol®, a French maritime pine extract, has been reported to have antioxidant and antiviral effects. Here, we evaluated the effect of Pycnogenol® on HCV replication. Wild-type and protease inhibitor (VX-950; telaprevir)-resistant HCV replicon cells were treated with Pycnogenol®, Pycnogenol® and interferon-alpha, and ribavirin and telaprevir. Pycnogenol® effects on replication were also evaluated in HCV-infected chimeric mice. Pycnogenol® treatment showed antiviral effects without cytotoxicity at doses up to 50 μg/mL. Pycnogenol® in combination with interferon-alpha or ribavirin showed synergistic effects. Moreover, Pycnogenol® inhibited HCV replication in telaprevir-resistant replicon cells; telaprevir and Pycnogenol® acted additively to reduce HCV RNA levels in wild-type HCV replicon cells without significantly increasing cytotoxicity. Pycnogenol® antiviral activity was higher than its components procyanidin and taxifolin. Further, treatment of infected chimeric mice with Pycnogenol® suppressed HCV replication and showed a synergistic effect with interferon-alpha. In addition, Pycnogenol® treatment resulted in dose-dependent reduction of reactive oxygen species in HCV replicon cell lines. Pycnogenol® is a natural product that may be used to improve the efficacy of the current standard antiviral agents and even to eliminate resistant HCV mutants.
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Affiliation(s)
- Sayeh Ezzikouri
- Virology Unit, Viral Hepatitis Laboratory, Pasteur Institute of Morocco, Casablanca, Morocco; Transboundary Animal Diseases Centre, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan; Laboratory of Animal Hygiene, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan.
| | | | - Michinori Kohara
- Department of Microbiology and Cell Biology, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Soumaya Benjelloun
- Virology Unit, Viral Hepatitis Laboratory, Pasteur Institute of Morocco, Casablanca, Morocco
| | - Yoichiro Kino
- Chemo-Sero Research Institute, Kikuchi Research Center, Kumamoto, Japan
| | - Kazuaki Inoue
- Division of Gastroenterology, Showa University, Fujigaoka Hospital, Kanagawa, Japan
| | | | - Kyoko Tsukiyama-Kohara
- Transboundary Animal Diseases Centre, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan; Laboratory of Animal Hygiene, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan.
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18
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Abdala S, Dévora S, Martín-Herrera D, Pérez-Paz P. Antinociceptive and anti-inflammatory activity of Sambucus palmensis link, an endemic Canary Island species. JOURNAL OF ETHNOPHARMACOLOGY 2014; 155:626-632. [PMID: 24928826 DOI: 10.1016/j.jep.2014.06.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 05/15/2014] [Accepted: 06/03/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Sambucus palmensis Link is an endemic species of the Canary Islands, popularly known as "Saúco canario". This species has wide use in folk medicine practice on the islands, especially as analgesic and anti-inflammatory. So the aim of our study is to evaluate the antinociceptive and anti-inflammatory activity of an aqueous extract of this species. MATERIALS AND METHODS Three aqueous extract doses (35, 52.5 and 70 mg/kg) were orally administered to laboratory Swiss mice obtained from the Central Animal House of La Laguna University. Writhing responses induced by phenylquinone, formalin induced paw pain response, tail-flick test and paw edema induced by carrageenan were evaluated in this work. RESULTS Oral pretreatment with 52.5 and 70 mg/kg Sambucus palmensis aqueous extract significantly reduced the writhing number induced by phenylquinone injection (61.64 and 89.04% respectively), and the pain response in the first (36.67 and 38.89%) and second (57.28 and 70.1%) phases respectively of the formalin test. Sambucus palmensis had a very slight effect on tail-flick test and inhibited moderately the edema formation induced by carrageenan in mice. CONCLUSIONS These data show for the first time that Sambucus palmensis has a significant antinociceptive effect that seems to be more peripherical than central. Sambucus palmensis also displays a moderate anti-inflammatory activity in an acute inflammation model. These results support the widespread use of Sambucus palmensis in popular medicine to treat pain and inflammation.
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Affiliation(s)
- Susana Abdala
- Unidad de Farmacología y Farmacognosia, Facultad de Farmacia, Universidad de La Laguna, La Laguna, Tenerife, Canary Islands, Spain.
| | - Sandra Dévora
- Unidad de Farmacología y Farmacognosia, Facultad de Farmacia, Universidad de La Laguna, La Laguna, Tenerife, Canary Islands, Spain
| | - Domingo Martín-Herrera
- Unidad de Farmacología y Farmacognosia, Facultad de Farmacia, Universidad de La Laguna, La Laguna, Tenerife, Canary Islands, Spain
| | - Pedro Pérez-Paz
- Departamento de Biología Vegetal, Universidad de La Laguna, La Laguna, Tenerife, Canary Islands, Spain
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Kim KH, Park SJ, Lee YJ, Lee JE, Song CH, Choi SH, Ku SK, Kang SJ. Inhibition of UVB-induced skin damage by exopolymers from Aureobasidium pullulans SM-2001 in hairless mice. Basic Clin Pharmacol Toxicol 2014; 116:73-86. [PMID: 24964914 DOI: 10.1111/bcpt.12288] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Accepted: 06/11/2014] [Indexed: 11/28/2022]
Abstract
Because antioxidants from natural sources may be an effective approach to the treatment and prevention of UV radiation-induced skin damage, the effects of purified exopolymers from Aureobasidium pullulans SM-2001 ('E-AP-SM2001') were evaluated in UVB-induced hairless mice. E-AP-SM2001 consists of 1.7% β-1,3/1,6-glucan, fibrous polysaccharides and other organic materials, such as amino acids, and mono- and di-unsaturated fatty acids (linoleic and linolenic acids) and shows anti-osteoporotic and immunomodulatory effects, through antioxidant and anti-inflammatory mechanisms. Hairless mice were treated topically with vehicle, E-AP-SM2001 stock and two and four times diluted solutions once per day for 15 weeks against UVB irradiation (three times per week at 0.18 J/cm(2) ). The following parameters were evaluated in skin samples: myeloperoxidase (MPO) activity, cytokine levels [interleukin (IL)-1β and IL-10], endogenous antioxidant content (glutathione, GSH), malondialdehyde (MDA) levels, superoxide anion production; matrix metalloproteases (MMP-1, -9 and -13), GSH reductase and Nox2 (gp91phox) mRNA levels, and immunoreactivity for nitrotyrosine (NT), 4-hydroxynonenal (HNE), caspase-3, and cleaved poly(ADP-ribose) polymerase (PARP). Photoageing was induced by UVB irradiation through ROS-mediated inflammation, which was related to the depletion of endogenous antioxidants, activation of MMPs and keratinocyte apoptosis. Topical treatment with all three doses of E-AP-SM2001 and 5 nm myricetin attenuated the UV-induced depletion of GSH, activation of MMPs, production of IL-1β, the decrease in IL-10 and keratinocyte apoptosis. In this study, E-AP-SM2001 showed potent inhibitory effects against UVB-induced skin photoageing. Thus, E-AP-SM2001 may be useful as a functional ingredient in cosmetics, especially as a protective agent against UVB-induced skin photoageing.
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Affiliation(s)
- Kyung Hu Kim
- Department of Histology and Anatomy, College of Korean Medicine, Daegu Haany University, Gyeongsan, Korea
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Zhang T, Xu L, Xiao H, Zhou X, Mo S, Cai S, Zhou Z. A New Iridoid Glycoside from the Rhizomes of Cyperus rotundus. B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.7.2207] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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22
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Zhou Z, Yin W, Zhang H, Feng Z, Xia J. A new iridoid glycoside and potential MRB inhibitory activity of isolated compounds from the rhizomes ofCyperus rotundusL. Nat Prod Res 2013; 27:1732-6. [DOI: 10.1080/14786419.2012.750318] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Petraglia AL, Winkler EA, Bailes JE. Stuck at the bench: Potential natural neuroprotective compounds for concussion. Surg Neurol Int 2011; 2:146. [PMID: 22059141 PMCID: PMC3205506 DOI: 10.4103/2152-7806.85987] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Accepted: 09/22/2011] [Indexed: 12/31/2022] Open
Abstract
Background: While numerous laboratory studies have searched for neuroprotective treatment approaches to traumatic brain injury, no therapies have successfully translated from the bench to the bedside. Concussion is a unique form of brain injury, in that the current mainstay of treatment focuses on both physical and cognitive rest. Treatments for concussion are lacking. The concept of neuro-prophylactic compounds or supplements is also an intriguing one, especially as we are learning more about the relationship of numerous sub-concussive blows and/or repetitive concussive impacts and the development of chronic neurodegenerative disease. The use of dietary supplements and herbal remedies has become more common place. Methods: A literature search was conducted with the objective of identifying and reviewing the pre-clinical and clinical studies investigating the neuroprotective properties of a few of the more widely known compounds and supplements. Results: There are an abundance of pre-clinical studies demonstrating the neuroprotective properties of a variety of these compounds and we review some of those here. While there are an increasing number of well-designed studies investigating the therapeutic potential of these nutraceutical preparations, the clinical evidence is still fairly thin. Conclusion: There are encouraging results from laboratory studies demonstrating the multi-mechanistic neuroprotective properties of many naturally occurring compounds. Similarly, there are some intriguing clinical observational studies that potentially suggest both acute and chronic neuroprotective effects. Thus, there is a need for future trials exploring the potential therapeutic benefits of these compounds in the treatment of traumatic brain injury, particularly concussion.
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Affiliation(s)
- Anthony L Petraglia
- Department of Neurosurgery, University of Rochester Medical Center, Rochester, NY, USA
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Aydin B, Unsal M, Sekeroglu ZA, Gülbahar Y. The antioxidant and antigenotoxic effects of pycnogenol(®) on rats treated with cisplatin. Biol Trace Elem Res 2011; 142:638-50. [PMID: 20676799 DOI: 10.1007/s12011-010-8781-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2010] [Accepted: 07/14/2010] [Indexed: 01/21/2023]
Abstract
Oxidative stress and inflammation are implicated in the pathogenesis of cisplatin-induced toxicity. Pycnogenol® is known for its strong antioxidant and anti-inflammatory effects. In this study, the possible protective effects of pycnogenol on kidney, bone marrow, and red blood cells in rats treated with cisplatin were investigated. The rats were divided into four groups. Group 1 was the control and groups 2, 3, and 4 were orally treated with pycnogenol (200 mg/kg bw, o.p) for 5 days, treated with cisplatin (7 mg/kg bw, i.p.) on the fifth day and treated with cisplatin plus pycnogenol, respectively. Antioxidative parameters in kidney and red blood cells were measured. Chromosome anomalies in bone marrow and renal histopathology were also investigated. Activities of pro-oxidant enzymes (myeloperoxidase and xanthine oxidase), malondialdehyde, and nitric oxide levels significantly increased but antioxidant enzymes activities decreased in the kidneys and red blood cells after cisplatin treatment. Pycnogenol treatment prior to the administration of cisplatin significantly decreased cisplatin-induced injury, as evidenced by its normalizing these parameters. Chromosomal aberrations decreased and mitotic index frequencies increased in bone marrow treated with cisplatin plus pycnogenol. These findings suggest that pycnogenol may be a useful protective agent against the toxicity associated with cisplatin therapy.
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Affiliation(s)
- Birsen Aydin
- Faculty of Science, Department of Biology, Amasya University, 05100 Amasya, Turkey.
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Park YS, Jeon MH, Hwang HJ, Park MR, Lee SH, Kim SG, Kim M. Antioxidant activity and analysis of proanthocyanidins from pine (Pinus densiflora) needles. Nutr Res Pract 2011; 5:281-7. [PMID: 21994521 PMCID: PMC3180677 DOI: 10.4162/nrp.2011.5.4.281] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2011] [Revised: 05/15/2011] [Accepted: 06/12/2011] [Indexed: 12/31/2022] Open
Abstract
In this study, we evaluated the antioxidant activity of pine needle extracts prepared with hot water, ethanol, hexane, hot water-hexane (HWH), and hot water-ethanol (HWE), using the DPPH (1,1-diphenyl-2-picrylhydrazyl) radical method. The hot water extract possessed superior antioxidant activity than the other extracts. We also compared the antioxidant activity of pine needle extracts through ROS inhibition activity in a cellular system using MC3T3 E-1 cells. The hot water extract exhibited the lowest ROS production. The pattern of HPLC analysis of each extract indicated that the hot water extract contained the highest proanthocyanidin level. The pine needle hot-water extract was then isolated and fractionated with Sephadex LH-20 column chromatography to determine the major contributor to its antioxidant activity. The No.7 and 12 fractions had high antioxidant activities, that is, the highest contents of proanthocyanidins and catechins, respectively. These results indicate that the antioxidant activity of procyanidins from the hot water extract of pine needles is positively related to not only polymeric proanthocyanidins but also to monomeric catechins. Moreover, the antioxidant activity of the pine needle hot water extract was similar to well-known antioxidants, such as vitamin C. This suggests that pine needle proanthocyanidins and catechins might be of interest for use as alternative antioxidants.
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Affiliation(s)
- Yong Soo Park
- Department of Food and Nutrition, Silla University, 140 Baegyang-daero 700beon-gil, Sasang-gu, Busan 617-736, Korea
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Techniques for quantifying effects of dietary antioxidants on transcription factor translocation and nitric oxide production in cultured cells. GENES AND NUTRITION 2011; 1:125-31. [PMID: 18850206 DOI: 10.1007/bf02829954] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2005] [Accepted: 05/10/2006] [Indexed: 10/22/2022]
Abstract
Dietary antioxidants can affect cellular processes relevant to chronic inflammatory diseases such as atherosclerosis. We have used non-standard techniques to quantify effects of the antioxidant soy isoflavones genistein and daidzein on translocation of Nuclear Factor-KB (NF-KB) and nitric oxide (NO) production, which are important in these diseases. Translocation was quantified using confocal immunofluoresecence microscopy and ratiometric image analysis. NO was quantified by an electrochemical method after reduction of its oxidation products in cell culture supernatants. Activation of the RAW 264.7 murine monocytel macrophage cell line increased the ratio of nuclear to cytoplasmic immunostaining for NF-kappaB. The increase was exacerbated by pre-treatment with genistein or daidzein. To show that decreases could also be detected, pre-treatment with the pine bark extract Pycnogenol(R) was examined, and found to reduce translocation. NO production was also increased by activation, but was reduced by pre-treatment with genistein or daidzein. In the EA.hy926 human endothelial cell line, constitutive production was detectable and was increased by thrombin. The confocal and electrochemical methods gave data that agreed with results obtained using the established electromobility shift and Griess assays, but were more sensitive, more convenient, gave more detailed information and avoided the use of radioisotopes.
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Ohkita M, Kiso Y, Matsumura Y. Pharmacology in Health Foods: Improvement of Vascular Endothelial Function by French Maritime Pine Bark Extract (Flavangenol). J Pharmacol Sci 2011; 115:461-5. [DOI: 10.1254/jphs.10r37fm] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Maroon JC, Bost JW, Maroon A. Natural anti-inflammatory agents for pain relief. Surg Neurol Int 2010; 1:80. [PMID: 21206541 PMCID: PMC3011108 DOI: 10.4103/2152-7806.73804] [Citation(s) in RCA: 130] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Accepted: 10/22/2010] [Indexed: 12/20/2022] Open
Abstract
The use of both over-the-counter and prescription nonsteroidal medications is frequently recommended in a typical neurosurgical practice. But persistent long-term use safety concerns must be considered when prescribing these medications for chronic and degenerative pain conditions. This article is a literature review of the biochemical pathways of inflammatory pain, the potentially serious side effects of nonsteroidal drugs and commonly used and clinically studied natural alternative anti-inflammatory supplements. Although nonsteroidal medications can be effective, herbs and dietary supplements may offer a safer, and often an effective, alternative treatment for pain relief, especially for long-term use.
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Affiliation(s)
- Joseph C Maroon
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
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Kim TD, Lee JY, Cho BJ, Park TW, Kim CJ. The analgesic and anti-inflammatory effects of 7-oxosandaracopimaric acid isolated from the roots of Aralia cordata. Arch Pharm Res 2010; 33:509-14. [PMID: 20422358 DOI: 10.1007/s12272-010-0403-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2009] [Revised: 10/11/2009] [Accepted: 01/22/2010] [Indexed: 12/25/2022]
Abstract
The root of Aralia cordata is a traditional medicine for the treatment of inflammation, fever, pain, and spasm in the various diseases in Korea. We isolated a dibenzylbutyrolactone diterpene acid, 7-oxosandaracopimaric acid (OSA), from the ether fraction of Aralia cordata MeOH extract, and studied the effect of OSA on phenylquinone (PQ)-induced writhing syndrome and PQ-induced capillary permeability increase, compound 48/80-induced histamine release by peritoneal mast cells, cycloxygenase (COX) activities, and silica-induced RAW 264.7 cell reactive oxygen species production. OSA (30 mg/kg, p.o.) significantly (p < 0.05) inhibited PQ-induced writhes by 25.8% and the PQ-induced capillary permeability increase levels by 33.13% as compared with PQ control. Furthermore, OSA (10 mM) inhibited COX-1 by 22.82 +/- 1.94%, and COX-2 by 15.86 +/- 1.35%, respectively, to the same extent as indomethacin at the same concentration (10 mM). And OSA (3.0 mM) significantly (p < 0.05) inhibited compound 48/80-induced histamine release from rat mast cells, and its activity was similar to that of celebrex (1 mM), but no piracetam (0.1 mM) inhibited them. OSA did not inhibit ROS production in RAW 264.7 cells. These results indicated that OSA has analgesic and anti-inflammatory effects due to its inhibitory effects on capillary permeability, COX activities, and histamine release.
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Affiliation(s)
- Tae Doo Kim
- Division of Pathophysiology and Pharmacology, College of Pharmacy, Chung-Ang University, Seoul, 156-756, Korea
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31
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Vigo E, Cepeda A, Gualillo O, Perez-Fernandez R. In-vitro anti-inflammatory activity of Pinus sylvestris and Plantago lanceolata extracts: effect on inducible NOS, COX-1, COX-2 and their products in J774A.1 murine macrophages. J Pharm Pharmacol 2010; 57:383-91. [PMID: 15807995 DOI: 10.1211/0022357055605] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
Extracts of the plant species Pinus sylvestris L. and Plantago lanceolata L. have been used in traditional medicine for the treatment of certain respiratory diseases, but little is known about their precise effects and mechanisms of action. In this study, we investigated the effect of these plant extracts on the production of nitric oxide (NO) and prostaglandin E2, NO synthase (NOS) type II, cyclooxygenase-1 (COX-1) and COX-2 mRNA expression in the murine macrophage cell line J774A.1. We found that Pinus sylvestris and Plantago lanceolata extracts inhibited NO production in a concentration-dependent manner in this cell line, without obvious cytotoxic effects as tested by MTT assay. The Plantago lanceolata extract at all doses used, and the Pinus sylvestris extract at high doses, showed significant scavenging of NO radicals released by the NO donor PAPA-NONOate. Our data also show that pre-treatment with these extracts significantly inhibits inducible NOS (iNOS) mRNA production in this cell line, without affecting COX-1 mRNA expression. COX-2 mRNA levels and PGE2 levels induced by lipopolysaccharide/interferon-γ were not modified upon pre-treatment with the extracts. Thus, our results suggest that the anti-inflammatory properties of Pinus sylvestris and Plantago lanceolata extracts may reflect decreased NO production, possibly due to inhibitory effects on iNOS gene expression or to NO-scavenging activity.
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Affiliation(s)
- E Vigo
- Department of Physiology, School of Medicine, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
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Jung WK, Heo SJ, Jeon YJ, Lee CM, Park YM, Byun HG, Choi YH, Park SG, Choi IW. Inhibitory effects and molecular mechanism of dieckol isolated from marine brown alga on COX-2 and iNOS in microglial cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2009; 57:4439-46. [PMID: 19408937 DOI: 10.1021/jf9003913] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
To identify the neuroprotective effect of dieckol, a hexameric compound of phloroglucinol isolated from marine brown alga, Ecklonia cava , this study investigated the anti-inflammatory effect of dieckol on lipopolysaccharide (LPS)-stimulated murine BV2 microglia and elucidated the molecular mechanism. The results showed that dieckol suppresses LPS-induced production of nitric oxide (NO) and prostaglandin E(2) (PGE(2)) and expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) in a dose-dependent manner, without causing cytotoxicity. It also significantly reduced the generation of proinflammatory cytokines, such as interleukin (IL)-1β and tumor necrosis factor (TNF)-α. Moreover, dieckol significantly reduced LPS-induced nuclear factor κB (NF-κB) and p38 mitogen-activated protein kinases (MAPKs) activation, as well as reactive oxygen species (ROS) production. Taken together, the inhibition of LPS-induced NO and PGE(2) production might be due to the suppression of NF-κB and p38 MAPK signal pathway and, at least in part, by inhibiting the generation of ROS. Hence, these effects of dieckol might assist therapeutic treatment for neurodegenerative diseases that are accompanied by microglial activation.
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Affiliation(s)
- Won-Kyo Jung
- Department of Marine Life Science and Marine Life Research Center, Chosun University, Gwangju 501-759, Republic of Korea
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Jung WK, Ahn YW, Lee SH, Choi YH, Kim SK, Yea SS, Choi I, Park SG, Seo SK, Lee SW, Choi IW. Ecklonia cava ethanolic extracts inhibit lipopolysaccharide-induced cyclooxygenase-2 and inducible nitric oxide synthase expression in BV2 microglia via the MAP kinase and NF-kappaB pathways. Food Chem Toxicol 2009; 47:410-7. [PMID: 19111593 DOI: 10.1016/j.fct.2008.11.041] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2008] [Revised: 11/06/2008] [Accepted: 11/25/2008] [Indexed: 11/13/2022]
Abstract
Ecklonia cava (EC) is a brown alga that has demonstrated radical scavenging, bactericidal, tyrosinase inhibitory, and protease inhibitory activities. However, the molecular mechanisms underlying its anti-inflammatory action remain unclear. In the current study, we attempted to determine whether pretreatment with EC induces a significant inhibition of anti-inflammatory activity in lipopolysaccharide (LPS)-stimulated murine BV2 microglia. Our results indicate that EC inhibits LPS-induced nitric oxide (NO) and prostaglandin E(2) (PGE(2)) production in a concentration-dependent manner and inhibits inducible nitric oxide (iNOS) and cyclooxygenase (COX)-2 in BV2 microglia without significant cytotoxicity. EC treatment significantly reduced nuclear factor-kappaB (NF-kappaB) translocation and DNA-binding in LPS-stimulated BV2 microglia. This effect was mediated through the inhibition of the degradation of the inhibitor kappaB and by inhibition of the mitogen-activated protein kinase (MAPK) phosphorylation, at least in part by inhibiting the generation of reactive oxygen species. Our data also indicate that EC extracts exert anti-inflammatory effects by suppressing proinflammatory cytokines. Collectively, these results suggest that EC suppresses the induction of cytokines by LPS, as well as iNOS and COX-2 expression, by blocking NF-kappaB and MAPK activation. These findings provide mechanistic insights into the anti-inflammatory and neuroprotective actions of EC in BV2 microglia.
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Affiliation(s)
- Won-Kyo Jung
- Department of Marine Life Science, Marine Life Research Center, Chosun University, Gwangju 501-759, Republic of Korea
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Kolodziej H, Radtke OA, Kiderlen AF. Stimulus (polyphenol, IFN-gamma, LPS)-dependent nitric oxide production and antileishmanial effects in RAW 264.7 macrophages. PHYTOCHEMISTRY 2008; 69:3103-3110. [PMID: 18164321 DOI: 10.1016/j.phytochem.2007.11.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2007] [Revised: 07/25/2007] [Accepted: 11/14/2007] [Indexed: 05/25/2023]
Abstract
The effects of interferon (IFN-gamma), lipopolysaccharide (LPS), and some polyphenols as individual stimuli, as well as in various combinations on NO production in non-infected and infected macrophage-like RAW 264.7 cells were investigated, with emphasis on the NO/parasite kill relationship. In non-infected and in Leishmania parasitized cells, gallic acid significantly inhibited the IFN-gamma and LPS-induced NO detected in the supernatant. This effect was less prominent in IFN-gamma- than in LPS-stimulated cells. Interestingly, and in contrast to non-infected cells, gallic acid inhibited NO production only when added within 3h after IFN-gamma+LPS. Addition of gallic acid following prolonged incubation with IFN-gamma+LPS periods (24 h) no longer inhibited, sometimes even enhanced NO release. Notably, an excellent NO/parasite kill relationship was evident from all the experiments. This study was extended to a series of polyphenols (3-O-shikimic acid, its 3,5-digalloylated analogue, catechin, EGCG, and a procyanidin hexamer) with proven immunostimulatory activities. Although these compounds themselves were found to be weak NO-inducers, the viability of intracellular Leishmania parasites was considerably reduced. Furthermore, their dose-dependent effects on macrophage NO release was determined in the presence of IFN-gamma and/or LPS. Again, non-infected and infected cells differed significantly in the NO response, while inhibition of IFN-gamma and/or LPS-induced NO production by the tested polyphenols strongly depended on the given time of exposure and the sequence of immunological stimuli. A strong inverse correlation between NO levels and intracellular survival rates of Leishmania parasites supported the assumption that the observed inhibition of NO was not simply due to interference with the Griess assay used for detection.
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Affiliation(s)
- Herbert Kolodziej
- Freie Universität Berlin, Institute of Pharmacy, Pharmaceutical Biology, Königin-Luise-Str. 2+4, D-14195 Berlin, Germany.
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35
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Gu JQ, Ikuyama S, Wei P, Fan B, Oyama JI, Inoguchi T, Nishimura J. Pycnogenol, an extract from French maritime pine, suppresses Toll-like receptor 4-mediated expression of adipose differentiation-related protein in macrophages. Am J Physiol Endocrinol Metab 2008; 295:E1390-400. [PMID: 18854426 DOI: 10.1152/ajpendo.90543.2008] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Adipose differentiation-related protein (ADRP) is highly expressed in macrophages and human atherosclerotic lesions. We demonstrated that Toll-like receptor (TLR) 4-mediated signals, which are involved in atherosclerosis formation, enhanced the expression of ADRP in macrophages. Lipopolysaccharide (LPS) enhanced the ADRP expression in RAW264.7 cells or peritoneal macrophages from wild-type mice, but not in macrophages from TLR4-deficient mice. Actinomycin D almost completely abolished the LPS effect, whereas cycloheximide decreased the expression at 12 h, indicating that the LPS-induced ADRP expression was stimulated at the transcriptional level and was also mediated by new protein synthesis. LPS enhanced the ADRP promoter activity, in part, by stimulating activator protein (AP)-1 binding to the Ets/AP-1 element. In addition, preceding the increase of the ADRP mRNA, LPS induced the expression of interleukin (IL)-6, IL-1alpha, and interferon-beta mRNAs, all of which stimulated the ADRP expression. Antibodies against these cytokines or inhibitors of c-Jun NH(2)-terminal kinase and nuclear factor (NF)-kappaB suppressed the ADRP mRNA level. Thus TLR4 signals stimulate the ADRP expression both in direct and indirect manners. Pycnogenol (PYC), an extract of French maritime pine, suppressed the expression of ADRP and the above-mentioned cytokines. PYC suppressed the ADRP promoter activity and enhancer activity of AP-1 and NF-kappaB, whereas it did not affect the LPS-induced DNA binding of these factors. In conclusion, TLR4-mediated signals stimulate the ADRP expression in macrophages while PYC antagonizes this process. PYC, a widely used dietary supplement, might be useful for prevention of atherosclerosis.
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Affiliation(s)
- Jian-Qiu Gu
- Dept. of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu Univ., Beppu 874-0838, Japan
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Nocun M, Ulicna O, Muchova J, Durackova Z, Watala C. French maritime pine bark extract (Pycnogenol®) reduces thromboxane generation in blood from diabetic male rats. Biomed Pharmacother 2008; 62:168-72. [PMID: 17698319 DOI: 10.1016/j.biopha.2007.07.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2007] [Revised: 05/31/2007] [Accepted: 07/02/2007] [Indexed: 12/22/2022] Open
Abstract
The protective effect of Pycnogenol against cardiovascular diseases was clearly demonstrated. Nevertheless, little is known about its antithrombotic effect, especially in diabetes associated with enhanced thromboxane synthesis leading to severe vascular complications. Therefore, the main purpose of our study was to evaluate the effect of long-term Pycnogenol intake on synthesis of prothrombotic thromboxane A(2) (TXA(2)) in animal model of insulin-dependent diabetes. The levels of main plasma TXA(2) metabolite, thromboxane B(2) (TXB(2)), were assessed by enzyme-linked immunosorbent assay. Diabetes was induced in Wistar male rats by single injection of streptozotocin, resulting after 8 weeks in significant body weight reduction, increased plasma glucose concentrations, and decreased plasma C-peptide levels, compared to non-diabetic animals. There was no significant reduction of plasma glucose concentrations after Pycnogenol ingestion. It was found, however, that daily administration of either Pycnogenol (5mg/kg b.wt.) or acetylsalicylic acid (ASA, 10mg/kg b.wt.) significantly reduced plasma TXB(2) concentrations, and this inhibitory effect was higher in the latter case. Nonetheless, simultaneous administration of Pycnogenol and ASA did not improve effectiveness of ASA-mediated decrease in TXB(2) generation. The results of the present study suggest that Pycnogenol might have a beneficial antithrombotic effect when administered alone or as a supplementation of standard antiplatelet therapy in diabetic patients.
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Affiliation(s)
- Marek Nocun
- Department of Hemostasis and Hemostatic Disorders, Medical University of Lodz, University Hospital No. 2, 90-549 Lodz, Poland
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Lee HS, Han SY, Bae EA, Huh CS, Ahn YT, Lee JH, Kim DH. Lactic acid bacteria inhibit proinflammatory cytokine expression and bacterial glycosaminoglycan degradation activity in dextran sulfate sodium-induced colitic mice. Int Immunopharmacol 2008; 8:574-80. [PMID: 18328449 DOI: 10.1016/j.intimp.2008.01.009] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2007] [Revised: 12/21/2007] [Accepted: 01/07/2008] [Indexed: 02/08/2023]
Abstract
To evaluate the effect of lactic acid bacteria (LAB) in inflammatory bowel diseases (IBD), inhibitory effect of several LAB isolated from intestinal microflora and commercial probiotics against NO production of lipopolysaccharide (LPS)-stimulated RAW264.7 cells was measured and anti-inflammatory effect of NO production-inhibitory LAB, Lactobacillus plantarum HY115 and L. brevis HY7401, in dextran sulfate sodium (DSS)-induced experimental colitic mice was investigated. The oral administration of the LAB to mice inhibited colon shortening and myeloperoxidase productivity in DSS-induced colitic mice. These LABs repressed the mRNA expressions of IL-1beta, TNF-alpha and IFN-gamma, as well as the protein expressions of IL-1beta and IL-6 proteins in the colon. The activation of the transcription factor, NF-kB, induced by DSS, was also inhibited by LAB. The administration of LAB reduced the degradation activities of chondroitin sulfate and hyaluronic acid of intestinal bacteria, induced by DSS, of which could induce the cytotoxic metabolites against intestinal cells. These findings suggest that NO-inhibitory LAB against LPS-stimulated RAW264.7 cells may improve colitis by the regulation of the inflammatory cytokine expression via the activation of transcription factor NF-kB as well as GAGs-degrading intestinal microflora.
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Affiliation(s)
- Hye-Sung Lee
- Department of Life and Nanopharmaceutical Sciences and Department of Pharmaceutical Science, Kyung Hee University, 1, Hoegi, Dongdaemun-Ku, Seoul 130-701, Republic of Korea
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Wu TF, Hsu CY, Huang HS, Chou SP, Wu H. Proteomic analysis of pycnogenol effects in RAW 264.7 macrophage reveals induction of cathepsin D expression and enhancement of phagocytosis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2007; 55:9784-9791. [PMID: 17960877 DOI: 10.1021/jf070453o] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Pycnogenol, polyphenolic compounds extracted from the pine bark, is beneficial for human health. To understand more of its effects, the present study is to explore the protein expression pattern induced by pycnogenol in RAW 264.7 cells. Global analysis using two-dimensional gel electrophoresis indicated that treatment with pycnogenol induces upregulation of four proteins, whose identities were revealed by mass spectrometry as cathepsin D, keratinocyte lipid-binding protein, proteasome subunit alpha type 1, and annexin IV. The pycnogenol effect displayed a time- and concentration-dependent manner. Unlike pycnogenol, N-acetyl cysteine and vitamin C had no effect on cathepsin D expression. Further studies showed that cathepsin D induction is correlated with an increase of lysosomal staining and enhancement of phagocytosis. These results reveal the novel effects of pycnogenol on protein expression and phagocytic functions and illustrate the advantage of proteomics-based strategy in unveiling the molecular basis of phytochemicals.
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Affiliation(s)
- Ting-Feng Wu
- Department of Biotechnology, Southern Taiwan University, 1 Nan-Tai Street, Yung Kang City, Tainan County, Tainan, Taiwan
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39
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Matsumori A, Higuchi H, Shimada M. French Maritime Pine Bark Extract Inhibits Viral Replication and Prevents Development of Viral Myocarditis. J Card Fail 2007; 13:785-91. [DOI: 10.1016/j.cardfail.2007.06.721] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2006] [Revised: 04/13/2007] [Accepted: 06/13/2007] [Indexed: 11/27/2022]
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40
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Sime S, Reeve VE. Protection from Inflammation, Immunosuppression and Carcinogenesis Induced by UV Radiation in Mice by Topical Pycnogenol®¶. Photochem Photobiol 2007. [DOI: 10.1111/j.1751-1097.2004.tb00009.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Shim JH, Kim KH, Cho YS, Choi HS, Song EY, Myung PK, Kang JS, Suh SK, Park SN, Yoon DY. Protective effect of oxidative stress in HaCaT keratinocytes expressing E7 oncogene. Amino Acids 2007; 34:135-41. [PMID: 17334903 DOI: 10.1007/s00726-007-0499-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2006] [Accepted: 11/01/2006] [Indexed: 12/22/2022]
Abstract
In a previous study, we established a stable cell line which constitutively expresses E7 in HaCaT human keratinocyte cell line and identified various relevant factors including oxygen modulators affected by the E7 oncogene. E7-expressing HaCaT cells (HaCaT/E7) appeared to be more resistant to H2O2-induced cell death. Here, we demonstrate how E7 oncogene would modulate oxidative stress-induced cell death. In addition, we verified the increased expression of catalase in the HaCaT/E7 by Western blot analysis. The results suggest that the E7 oncogene would induce higher resistance to ROS-induced cell injury in the E7-infected cells via the upregulation of catalase. To investigate these paradoxical effects of high concentrations of H2O2 (500 microM-1 mM), we examined their effects on receptor mediated apoptosis, cell death via the mitochondrial pathway and modulation of apoptosis related factors. Our results revealed that HaCaT keratinocytes infected with HPV 16 E7 oncogene modulated expressions of catalase, Bcl-xL, IL-18, Fas, Bad, and cytochrome c as well as NF-kappaB, resulting in the resistance to oxidative stress-induced cell death.
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Affiliation(s)
- J-H Shim
- Laboratory of Cell and Immunobiochemistry, Division of Bioscience and Biotechnology, Konkuk University, Seoul, South Korea
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42
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Maroon JC, Bost JW, Borden MK, Lorenz KM, Ross NA. Natural antiinflammatory agents for pain relief in athletes. Neurosurg Focus 2006; 21:E11. [PMID: 17112189 DOI: 10.3171/foc.2006.21.4.12] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Most athletes experience musculoskeletal injuries during their sports activity that require rest at a minimum, and occasionally injuries are severe enough to necessitate surgical repair. Neurosurgeons are often consulted for athletically sustained injuries and prescribe medications for the associated pain. The use of both over-the-counter and prescription nonsteroidal medications is frequently recommended, but recent safety concerns must now be considered. The authors discuss the biochemical pathways of nonsteroidal drugs and review the potentially serious side effects of these medications. They also review the use of natural supplements, which may be a safer, and often as effective, alternative treatment for pain relief.
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Affiliation(s)
- Joseph C Maroon
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
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Qi J, Chen JJ, Cheng ZH, Zhou JH, Yu BY, Qiu SX. Iridoid glycosides from Harpagophytum procumbens D.C. (devil's claw). PHYTOCHEMISTRY 2006; 67:1372-7. [PMID: 16857222 DOI: 10.1016/j.phytochem.2006.05.029] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2006] [Revised: 04/24/2006] [Accepted: 05/17/2006] [Indexed: 05/10/2023]
Abstract
Iridoid glycosides, harprocumbide A (6''-O-alpha-D-galactopyranosylharpagoside, 1) and harprocumbide B (6''-O-(cis-p-coumaroyl)-procumbide, 2) were isolated from the tubers of Harpagophytum prucumbens D.C., along with nine known iridoid glycosides 6-O-alpha-D-galactopyranosylharpagoside (3), and harpagoside (4), harpagide (5), 8-cinnamoylmyoporoside (6), 8-O-feruloylhapagide (7), procumbide (8), 6''-O-(p-coumaroyl)-procumbide (9), 8-O-(p-coumaroyl)-harpagide (10) and 8-O-(cis-p-coumaroyl)-harpagide (11). Compound 10 showed marginal inhibition activity against macrophages respiratory burst.
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Affiliation(s)
- Jin Qi
- Department of Complex Prescription of TCM, China Pharmaceutical University, Nanjing 210009, PR China
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44
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Belcaro G, Cesarone MR, Errichi BM, Ledda A, Di Renzo A, Stuard S, Dugall M, Pellegrini L, Rohdewald P, Ippolito E, Ricci A, Cacchio M, Ruffini I, Fano F, Hosoi M. Venous ulcers: microcirculatory improvement and faster healing with local use of Pycnogenol. Angiology 2006; 56:699-705. [PMID: 16327946 DOI: 10.1177/000331970505600607] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Chronic venous insufficiency (CVI) causes a well-defined microangiopathy described as venous hypertensive microangiopathy (VHM) leading to venous ulcerations. VHM is mainly observed in the distal part of the leg, in the perimalleolar region. In VHM edema is the consequence of increased capillary pressure and reduced local clearance, and this affects local perfusion. The healing of venous ulcers is usually very slow. Many treatments are available, but there is still no standard. Oral Pycnogenol is effective in venous disease and particularly in controlling edema. The aim of this study was the evaluation of the local effects of Pycnogenol on ulcers healing associated with venous hypertension. The study lasted 6 weeks including 18 patients (16 completed the study) with venous ulcerations. The oral treatment with Pycnogenol was compared with a combination treatment including oral and local treatment. In subjects treated with the combination treatment (oral and local), venous ulcers healed better (there was a faster reduction in ulcerated area) in comparison with oral treatment only. According to this pilot study Pycnogenol appears to have an important role in local treatment of venous ulcers improving healing and signs/symptoms.
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Affiliation(s)
- G Belcaro
- Department of Biomedical Sciences, Chieti-Pescara University, Italy.
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Kolodziej H, Burmeister A, Trun W, Radtke OA, Kiderlen AF, Ito H, Hatano T, Yoshida T, Foo LY. Tannins and related compounds induce nitric oxide synthase and cytokines gene expressions in Leishmania major-infected macrophage-like RAW 264.7 cells. Bioorg Med Chem 2005; 13:6470-6. [PMID: 16143535 DOI: 10.1016/j.bmc.2005.07.012] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2005] [Revised: 06/20/2005] [Accepted: 07/01/2005] [Indexed: 11/15/2022]
Abstract
Some polyphenol-containing extracts (Pelargonium sidoides, Phyllanthus amarus) and representatives of simple phenols (shikimic acid 3- and 5-O-gallate), flavan-3-ols (epigallocatechin 3-gallate), proanthocyanidins (a hexamer) and hydrolysable tannins (corilagin, casuariin, geraniin) were studied for gene expressions (iNOS, IL-1, IL-10, IL-12, IL-18, TNF-alpha, IFN-alpha/gamma) by RT-PCR. All extracts and compounds were capable of enhancing the iNOS and cytokine mRNA levels in parasitised cells when compared with those in non-infected conditions.
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Affiliation(s)
- Herbert Kolodziej
- Institute of Pharmacy, Pharmaceutical Biology, Freie Universität Berlin, Germany.
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46
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Kolodziej H, Kiderlen AF. Antileishmanial activity and immune modulatory effects of tannins and related compounds on Leishmania parasitised RAW 264.7 cells. PHYTOCHEMISTRY 2005; 66:2056-71. [PMID: 16153409 DOI: 10.1016/j.phytochem.2005.01.011] [Citation(s) in RCA: 92] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2004] [Revised: 12/14/2004] [Indexed: 05/04/2023]
Abstract
The antileishmanial and immunomodulatory potencies of a total of 67 tannins and structurally related compounds were evaluated in terms of extra- and intra-cellular leishmanicidal effects and macrophage activation for release of nitric oxide (NO), tumour necrosis factor (TNF) and interferon (IFN)-like activities. Their effects on macrophage functions were further assessed by expression analysis (iNOS, IFN-alpha, IFN-gamma, TNF-alpha, IL-1, IL-10, IL-12, IL-18). With few exceptions, e.g., caffeic acid derivatives, these polyphenols revealed little direct toxicity for extracellular promastigote Leishmania donovani or L. major strains. In contrast, many polyphenols appreciably reduced the survival of the intracellular, amastigote parasite form in vitro. Upon activation, e.g., by immune response mediators such as IFN-gamma, macrophages may transform from permissive host to leishmanicidal effector cells. Our data from functional bioassays suggested that the effects of polyphenols on intracellular Leishmania parasites were due to macrophage activation rather than direct antiparasitic activity. Gene expression analyses not only confirmed functional data, they also clearly showed differences in the response of infected macrophages when compared to that of noninfected cells. Conspicuously, infected macrophages showed augmented and prolonged activation of host defense mechanisms, indicating that parasitised macrophages were exquisitely predisposed or "primed" to react to activating molecules such as polyphenols. This promotive effect may be of special benefit, e.g., stimulation of the non-specific immune system selectively at the site of infection and when needed. Although these data provide the basis for an immunological concept of plant polyphenols for their beneficial effects in various infectious conditions, in vivo experiments are essential to prove the therapeutic benefits of polyphenolic immunomodulators.
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Affiliation(s)
- Herbert Kolodziej
- Freie Universität Berlin, Institute of Pharmacy, Pharmaceutical Biology, Königin-Luise-Str. 2+4, D-14195 Berlin, Germany.
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47
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Shim JH, Cho KJ, Lee KA, Kim SH, Myung PK, Choe YK, Yoon DY. E7-expressing HaCaT keratinocyte cells are resistant to oxidative stress-induced cell death via the induction of catalase. Proteomics 2005; 5:2112-22. [PMID: 15852342 DOI: 10.1002/pmic.200401106] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Cervical carcinoma is one of the most prevalent cancers in women worldwide, and human papillomavirus (HPV) type 16 is the most common agent linked to human cervical carcinoma. In order to identify various relevant factors affected by the E7 oncogene, we established a stable cell line, which constitutively expressed E7 using the HaCaT human keratinocyte cell line. The increased expression and activity of catalase in the E7-expressing HaCaT cells (HaCaT/E7) were verified via matrix-assisted laser desorption/ionization-time of flight, Western blot, and reverse transcription-polymerase chain reaction analyses. The regulation of catalase by E7 was investigated by the detection of catalase promoter activity. E7 enhanced the activities of both the catalase promoter and nuclear factor-kappaB, one of the major transcription factors regulating the expression of the catalase gene. HaCaT/E7 cells produced lower quantities of intracellular reactive oxygen species (ROS), and appeared to be more resistant to H(2)O(2)-induced cell death. Moreover, in order to test the specific effects of E7 on catalase induction, the HaCaT/E7 cells were transiently transfected with E7 antisense vector, resulting in reductions in both the expression and activity of catalase, and a recovery of intracellular ROS levels, thus resulting in recovered sensitivity to H(2)O(2)-induced cell death. These results suggest that the HPV 16 E7 oncogene induces higher resistance to ROS-induced cell injury in the E7-infected cells, probably via the modulation of several anti-oxidant enzymes, including catalase.
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Affiliation(s)
- Jung-Hyun Shim
- Laboratory of Cell Biology, Korea Research Institute of Bioscience and Biotechnology, Daejeon
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48
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Lee HG, Kim H, Oh WK, Yu KA, Choe YK, Ahn JS, Kim DS, Kim SH, Dinarello CA, Kim K, Yoon DY. Tetramethoxy hydroxyflavone p7F downregulates inflammatory mediators via the inhibition of nuclear factor kappaB. Ann N Y Acad Sci 2005; 1030:555-68. [PMID: 15659838 DOI: 10.1196/annals.1329.065] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Artemisia has been traditionally used in Korean herbal medicine to clear damp heat and to treat uteritis and jaundice. Flavonoids isolated from Artemisia are also known to possess anti-inflammatory activities. In this study, 5,6,3',5'-tetramethoxy 7,4'-hydroxyflavone (p7F) was isolated from Artemisia absinthium. We examined in vitro and in vivo regulatory functions of p7F on the production of nitric oxide (NO), prostaglandin E(2) (PGE(2)), and tumor necrosis factor-alpha (TNF-alpha) as well as the expression of inducible NO synthase (iNOS), cyclooxygenase-2 (COX-2), and collagen-induced arthritis. p7F inhibited the expression or production of proinflammatory mediators such as COX-2/PGE(2) and iNOS/NO in lipopolysaccharide (LPS)-stimulated RAW 264.7 cells. p7F also suppressed the serum level of TNF-alpha in mice treated with collagen and inhibited nuclear factor-kappaB (NF-kappaB) activation as well as NF-kappaB promoter activity in RAW 264.7 cells stimulated with LPS. This compound directly inhibited the intracellular accumulation of reactive oxygen species in hydrogen peroxide-stimulated RAW 264.7 cells. p7F has antioxidant activity and inhibits NF-kappaB activation. Taken together, these results suggest that p7F can be clinically applied to the treatment of inflammatory diseases.
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Affiliation(s)
- Hee-Gu Lee
- Laboratory of Cell Biology, Korea Research Institute of Bioscience and Biotechnology, Yuseong P.O. Box 115, Daejeon 305-600, Korea
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Kim YG, Park HY. The effects of Pycnogenol on DNA damage in vitro and expression of superoxide dismutase and HP1 in Escherichia coli SOD and catalase deficient mutant cells. Phytother Res 2005; 18:900-5. [PMID: 15597332 DOI: 10.1002/ptr.1538] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The procyanidin-rich French maritime pine bark extract Pycnogenol (PYC) is believed to be an antioxidant. To access whether PYC protects DNA against Fenton reaction radicals, pUC 19 plasmid DNA was damaged by OH- radicals generated from Fe(II) plus H2O2 in the presence and absence of PYC. DNA damage was quantified by measuring decreases in supercoiled DNA (SC-DNA) using agarose gel electrophoresis. The results showed that PYC (50 microg/mL) did not inhibit DNA damage from Fenton reaction-generated oxyradicals, when the Fenton reaction was allowed to proceed. However, PYC did protect against DNA damage when added prior to the initiation of the Fenton reaction, suggesting that protection resulted from chelation of Fe rather than from the scavenging of radicals. Moreover, we unexpectedly observed PYC-associated DNA breakage, which was dose- and time- dependent. Other antioxidants such as desferrioxamine (DFO) including butylated hydroxyltoluene (BHT), curcumin and alpha-tocopherol exhibited protective effects against DNA damage caused by the Fenton reaction. Subsequently, we assessed the possible pro-oxidant function of PYC on DNA damage in E. coli SOD deficient mutants under oxidative stress, after observing that PYC can induce SOD under oxidative stress. Although, PYC did not enhance DNA damage, it likewise did not protect against oxidative stress-mediated DNA damage. All together, our data indicate that PYC under some circumstances can enhance oxidative stress-mediated DNA damage in vitro and in vivo.
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Affiliation(s)
- Young Gon Kim
- Biological Science, College of Natural sciences, Chosun University, Kwangju, Korea.
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Rasmussen SE, Frederiksen H, Struntze Krogholm K, Poulsen L. Dietary proanthocyanidins: Occurrence, dietary intake, bioavailability, and protection against cardiovascular disease. Mol Nutr Food Res 2005; 49:159-74. [PMID: 15635686 DOI: 10.1002/mnfr.200400082] [Citation(s) in RCA: 255] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The French have one of the lowest incidences of coronary heart disease in the Western world despite a diet with a relatively high fat content. This phenomenon that has puzzled researchers worldwide for more than a decade is known as the 'French paradox' and has been linked to the high consumption of red wine in France. Red wine is rich in the complex polyphenols, the proanthocyanidins, and these compounds have recently attracted attention as potential cardiac-protective compounds. The present review summarizes the literature on proanthocyanidins with focus on their chemical structure, the occurrence, the daily intake from foods, the bioavailability and metabolism, and the evidence for a protective effect against cardiovascular diseases.
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Affiliation(s)
- Salka Elbøl Rasmussen
- Department of Toxicology and Risk Assessment, Danish Institute for Food and Veterinary Research, Soeborg, Denmark.
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