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Mohammadi Zonouz A, Ghasemzadeh Rahbardar M, Hosseinzadeh H. The molecular mechanisms of ginkgo (Ginkgo biloba) activity in signaling pathways: A comprehensive review. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 126:155352. [PMID: 38342017 DOI: 10.1016/j.phymed.2024.155352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 11/30/2023] [Accepted: 01/08/2024] [Indexed: 02/13/2024]
Abstract
BACKGROUND One of the most unique plants that have ever grown on the planet is Ginkgo biloba L., a member of the Ginkgoaceae family with no close living relatives. The existence of several differently structured components of G. biloba has increased the chemical variety of herbal therapy. Numerous studies that investigated the biochemical characteristics of G. biloba suggest this plant as a potential treatment for many illnesses. PURPOSE Review the molecular mechanisms involved in the signaling pathways of G. biloba activity in varied circumstances and its potential as a novel treatment for various illnesses. METHODS Studies focusing on the molecular processes and signaling pathways of compounds and extracts of G. biloba were found and summarized using the proper keywords and operators from Google Scholar, PubMed, Web of Science, and Scopus without time restrictions. RESULTS G. biloba exerts its effects through its anti-inflammatory, anti-apoptotic, anti-cancer, neuroprotective, cardioprotective, hepatoprotective, antiviral, antibacterial, pulmoprotective, renoprotective, anti-osteoporosis, anti-melanogenic, retinoprotective, otoprotective, adipogenic, and anti-adipogenic properties. The most important mechanisms involved in these actions are altering the elevation of ROS formation, inhibiting NADPH oxidases activation, altering the expression of antioxidant enzymes, downregulating MAPKs (p38 MAPK and ERK, and JNK) and AP-1, increasing cAMP, inactivating Stat5, activating the AMPK signaling pathway, affecting Stat3/JAK2, NF-κB, Nrf-2, mTOR, HGF/c-Met, Wnt/β-catenin and BMP signaling pathways, and changing the mitochondrial transmembrane potential, the Bax/Bcl-2 ratio, the release of Cyc from mitochondria to cytosol, the protein cleavage of caspases 3, 7, 8, 9, and 12, poly (ADP-ribose) polymerase, and MMPs levels. CONCLUSIONS G. biloba and its components have gained attention in recent years for their therapeutic benefits, such as their anti-inflammatory, antioxidant, anti-apoptotic, and apoptotic effects. By understanding their molecular mechanisms and signaling pathways, potential novel medicines might be developed in response to the rising public desire for new therapies.
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Affiliation(s)
| | | | - Hossein Hosseinzadeh
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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Hsu YT, Chen YH, Fu CM, Lee WC, Tsai MY. Juan Bi Tang, a traditional Chinese medicine, for alleviating pain related to arteriovenous fistula in maintenance hemodialysis patients: An interventional pilot study with brief review. Medicine (Baltimore) 2023; 102:e35974. [PMID: 37960730 PMCID: PMC10637424 DOI: 10.1097/md.0000000000035974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 10/16/2023] [Indexed: 11/15/2023] Open
Abstract
Myofascial pain around an arteriovenous fistula (AVF) during hemodialysis (HD) can affect a patient compliance with HD and quality of life. Prolonged use of analgesics is often associated with increased adverse events. Juan Bi Tang (JBT) is an ancient decoction of Chinese traditional medicinal plants commonly used to treat spasms and pain in the shoulder and upper arm, and it is popularly believed to have favorable outcomes in Asian populations. This interventional prospective pilot study was worked to demonstrate the potential of JBT for fistula-associated myofascial pain in HD patients and to prepare for future randomized controlled trials. Eligible patients were enrolled in this study and took JBT to treat fistula-associated myofascial pain for 4 weeks. Pain scores on a visual analogue scale (VAS) were reported at baseline, after a 4-week intervention, and 2 weeks after completion of treatment. The Kidney Disease Quality of Life 36-Item Short Form and a safety laboratory monitor were statistically compared between different time points. A total of 20 patients were selected as eligible participants and completed the intervention and questionnaires. The mean VAS score was significantly reduced after JBT treatment (P < .01). Participants reported improved physical (P < .01) and mental health (P < .05) after treatment. However, only improvements in mental health were preserved 2 weeks after the end of treatment (P < .05). In this study, complementary JBT for HD patients with fistula-related myofascial pain was viable and well tolerated, and it demonstrated the expected effects on pain control.
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Affiliation(s)
- Yung-Tang Hsu
- Department of Chinese Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
- Kaohsiung Municipal Feng Shan Hospital-Under the Management of Chang Gung Medical Foundation, Kaohsiung, Taiwan
| | - Yung-Hsiang Chen
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan
- Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
- Department of Psychology, College of Medical and Health Science, Asia University, Taichung, Taiwan
| | - Chung-Ming Fu
- Division of Nephrology, Department of Internal Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Wen-Chin Lee
- Division of Nephrology, Department of Internal Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ming-Yen Tsai
- Department of Chinese Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
- Kaohsiung Municipal Feng Shan Hospital-Under the Management of Chang Gung Medical Foundation, Kaohsiung, Taiwan
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan
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Miyabe M, Nakamura N, Saiki T, Miyabe S, Ito M, Sasajima S, Minato T, Matsubara T, Naruse K. Porphyromonas gingivalis Lipopolysaccharides Promote Proliferation and Migration of Human Vascular Smooth Muscle Cells through the MAPK/TLR4 Pathway. Int J Mol Sci 2022; 24:ijms24010125. [PMID: 36613563 PMCID: PMC9820797 DOI: 10.3390/ijms24010125] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/08/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022] Open
Abstract
Atherosclerosis is a major cause of mortality worldwide. The initial change in atherosclerosis is intimal thickening due to muscle cell proliferation and migration. A correlation has been observed between periodontal disease and atherosclerosis. Here, we investigated the proliferation and migration of human aortic smooth muscle cells (HASMCs) using Porphyromonas gingivalis-derived LPS (Pg-LPS). To elucidate intracellular signaling, toll-like receptor 4 (TLR4) and myeloid differentiation factor 88 (MyD88) of HASMCs were knocked down, and the role of these molecules in Pg-LPS-stimulated proliferation and migration was examined. The role of mitogen-activated protein kinase (MAPK) in HASMC proliferation and migration was further elucidated by MAPK inhibition. Pg-LPS stimulation increased the proliferation and migration of HASMCs and activated the TLR4/MyD88 pathway. TLR4 knockdown inhibited Pg-LPS stimulated HASMCs proliferation and migration. Pg-LPS stimulation led to the phosphorylation of P38 MAPK, JNK, and ERK, and MyD88 knockdown inhibited the phosphorylation of P38 MAPK and JNK but not ERK. P38 MAPK and SAPK/JNK inhibition did not suppress the proliferation of HASMCs upon Pg-LPS stimulation, but ERK inhibition significantly inhibited proliferation. SAPK/JNK and ERK inhibition suppressed Pg-LPS-stimulated migration of HASMCs. In conclusion, our findings suggest that Pg-LPS may promote atherosclerosis via the activation of MAPK through TLR4.
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Affiliation(s)
- Megumi Miyabe
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, 2-11, Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan
- Correspondence: ; Tel./Fax: +81-52-759-2168
| | - Nobuhisa Nakamura
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, 2-11, Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan
| | - Tomokazu Saiki
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, 2-11, Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan
- Department of Pharmacy, Aichi Gakuin University Dental Hospital, 2-11, Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan
| | - Satoru Miyabe
- Department of Maxillofacial Surgery, School of Dentistry, Aichi Gakuin University, 2-11, Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan
| | - Mizuho Ito
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, 2-11, Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan
| | - Sachiko Sasajima
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, 2-11, Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan
| | - Tomomi Minato
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, 2-11, Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan
- Department of Clinical Laboratory, Aichi Gakuin University Dental Hospital, 2-11, Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan
| | - Tatsuaki Matsubara
- The Graduate Center of Human Sciences, Aichi Mizuho College, Syunko-cho, Mizuho-ku, Nagoya 467-0867, Japan
| | - Keiko Naruse
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, 2-11, Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan
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Astragalus membranaceus Extract Prevents Calcium Oxalate Crystallization and Extends Lifespan in a Drosophila Urolithiasis Model. LIFE (BASEL, SWITZERLAND) 2022; 12:life12081250. [PMID: 36013429 PMCID: PMC9409928 DOI: 10.3390/life12081250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/04/2022] [Accepted: 08/15/2022] [Indexed: 11/17/2022]
Abstract
Approximately 1 in 20 people develops kidney stones at some point in their life. Although the surgical removal of stones is common, the recurrence rate remains high and it is therefore important to prevent the occurrence of kidney stones. We chose Astragalus membranaceus (AM), which is a traditional Chinese medicine, to study the prevention of urolithiasis using a Drosophila model based on our previous screening of traditional Chinese herbs. Wild-type Drosophila melanogaster Canton-S adult fruit flies were used in this study. Ethylene glycol (EG, 0.5%) was added to food as a lithogenic agent. The positive control agent (2% potassium citrate (K-citrate)) was then compared with AM (2, 8, and 16 mg/mL). After 21 days, the fruit flies were sacrificed under carbon dioxide narcotization, and the Malpighian tubules were dissected, removed, and processed for polarized light microscopy examination to observe calcium oxalate (CaOx) crystallization. Then, the ex vivo dissolution of crystals in the Malpighian tubules was compared between K-citrate and AM. Survival analysis of the EG, K-citrate, and AM groups was also performed. Both 2% K-citrate and AM (16 mg/mL) significantly inhibited EG-induced CaOx crystal formation. Mean lifespan was significantly reduced by the administration of EG, and the results were significantly reversed in the AM (8 and 16 mg/mL) groups. However, AM extract did not directly dissolve CaOx crystals in Drosophila Malpighian tubules ex vivo. In conclusion, AM extract decreased the ratio of CaOx crystallization in the Malpighian tubules and significantly ameliorated EG-induced reduction of lifespan. AM prevented CaOx crystal formation in the Drosophila model.
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The Uroprotective Efficacy of Total Ginsenosides in Chinese Ginseng on Chemotherapy with Cyclophosphamide. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12157828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Hemorrhagic cystitis is a recognizable complication of cyclophosphamide (CYP) attributable to its lively metabolite acrolein, which produces urothelial injury. The study intended to examine the uroprotective efficacy of total ginsenosides in Chinese ginseng (TGCG) in CYP-induced hemorrhagic cystitis. In total, 24 virgin female rats were randomized into four groups as follows: group 1 (control group; injected with normal saline), group 2 (injected with CYP plus a placebo with normal saline), group 3 (given CYP and TGCG (200 mg/kg)), and group 4 (given CYP and 2-mercaptoethane sulfonate sodium (Mesna, 30 mg/kg)). An evaluation by cystometry was conducted. Values of the voiding interval were assessed in anesthetized rats and histological examinations of the bladders were measured. In the cystometry analysis, the voiding interval was significantly reduced in the CYP group. TGCG and Mesna significantly increased in the voiding interval values, individually. Bladder edema and urothelial injury were examined after contact with CYP. Contrasted to the group given CYP, CYP-induced hemorrhagic cystitis, TGCG significantly increased the urothelial thickness, and significantly reduced scores of mucosal break and submucosal edema in the bladder. In conclusion, these findings mean that the treatment with TGCG in CYP rats can avoid hemorrhagic cystitis. TGCG decreases urothelial injury. TGCG may participate as the chief character of uroprotection in CYP-induced hemorrhagic cystitis.
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An integrative approach to harnessing the potential of Traditional Indian Medicinal plants for acute viral infections. J Herb Med 2022. [DOI: 10.1016/j.hermed.2022.100559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Hu DN, Zhang R, Yao S, Iacob CE, Yang WE, Rosen R, Yang SF. Cultured Human Uveal Melanocytes Express/secrete CXCL1 and CXCL2 Constitutively and Increased by Lipopolysaccharide via Activation of Toll-like Receptor 4. Curr Eye Res 2021; 46:1681-1694. [PMID: 33979551 DOI: 10.1080/02713683.2021.1929326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 05/01/2021] [Accepted: 05/03/2021] [Indexed: 02/07/2023]
Abstract
Purpose: Lipopolysaccharide (LPS) can activate Toll-like receptor 4 (TLR4) and increase the expression of CXCL1 and CXCL2, the potent neutrophils chemoattractants, in various cell types. These effects have not been previously reported in the uveal melanocytes. This study was designed to investigate the effects of LPS on the activation of TLR4 and expression of CXCL1/CXCL2 in cultured human uveal melanocytes and the relevant signal pathways.Methods: Effects of LPS on the expression of TLR4 were tested using real-time PCR, flow cytometry and fluorescence immunostaining. Effects of LPS-induced expression/secretion of CXCL1/CXCL2 were studied using real-time PCR in cell lysates and ELISA in conditioned media of cultured uveal melanocytes. Activated NF-κB and phosphorylated MAPK signals were tested in cells with and without LPS treatment using flow cytometry. Effects of various signal inhibitors on p38, ERK1/2, JNK1/2 and NF-κB on the secretion of CXCL1/CXCL2 were tested by ELISA. The effects of neutralized antibodies of CXCL1/CXCL2 on the severity of LPS-induced uveitis were tested in a mouse model.Results: LPS stimulation increased the expression of TLR4 mRNA and protein in culture uveal melanocytes. Constitutive secretion of CXCL1/CXCL2 was detected in uveal melanocytes and was significantly increased dose- and time-dependently by LPS stimulation. LPS mainly increased the activated NF-κB and phosphorylated JNK1/2. LPS-induced expression of CXCL1/CXCL2 was blocked by NF-κB and JNK1/2 inhibitors. The severity of LPS-induced uveitis was significantly inhibited by neutralizing antibody to CXCL1/CXCL2Conclusions: This is the first report on the LPS-induced expression of CXCL1 and CXCL2 by uveal melanocytes via the activation of TLR4. These results suggest that uveal melanocytes may play a role in the immune reaction that eliminates the invading pathogens. Conversely, an excessive LPS-induced inflammatory reaction may also lead to the development of inflammatory ocular disorders, such as non-infectious uveitis.
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Affiliation(s)
- Dan-Ning Hu
- Tissue Culture Center, New York Eye and Ear Infirmary of Mount Sinai, New York, USA
- Departments of Ophthalmology, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Ruihua Zhang
- Departments of Ophthalmology, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Shen Yao
- Departments of Medicine, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Codrin E Iacob
- Departments of Pathology, Icahn School of Medicine at Mount Sinai, New York, USA
- Department of Pathology, New York Eye and Ear Infirmary of Mount Sinai, New York, USA
| | - Wei-En Yang
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Richard Rosen
- Departments of Ophthalmology, Icahn School of Medicine at Mount Sinai, New York, USA
- Department of Ophthalmology, New York Eye and Ear Infirmay of Mount Sinai, New York, USA
| | - Shun-Fa Yang
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
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Narayanankutty A, Sasidharan A, Job JT. Targeting Toll like Receptors in Cancer: Role of TLR Natural and Synthetic Modulators. Curr Pharm Des 2020; 26:5040-5053. [DOI: 10.2174/1381612826666200720235058] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 06/19/2020] [Indexed: 02/08/2023]
Abstract
Background:
Toll like receptors (TLRs) are a group of transmembrane receptors belonging to the
broad class pattern recognition receptors (PRR), involved in recognition of Pathogen Associated Molecular Patterns
(PAMPs) thereby inducing an immune response. Apart from these exogenous PAMPs, numerous endogenous
PAMPs are also ligands for various TLRs thereby activating the TLR dependent immune response, subsequently
leading to the onset of an inflammatory response. Prolonged activation of TLR by these endogenous
PAMPs leads to chronic inflammatory insults to the body and which in turn alters the proliferative patterns of the
cells, which ultimately leads to the development of cancer.
Objectives:
The present review aims to provide a detailed outline of the differential roles of various TLRs in
cancer and the possible use of them as a therapeutic target.
Methods:
Data were collected from PubMed/Sciencedirect/Web of Science database and sorted; the latest literature
on TLRs was incorporated in the review.
Results:
Among the different TLRs, few are reported to be anti-neoplastic, which controls the cell growth and
multiplication in response to the endogenous signals. On the contrary, numerous studies have reported the procarcinogenic
potentials of TLRs. Hence, TLRs have emerged as a potential target for the prevention and treatment
of various types of cancers. Several molecules, such as monoclonal antibodies, small molecule inhibitors and
natural products have shown promising anticancer potential by effectively modulating the TLR signalling.
Conclusion:
Toll-like receptors play vital roles in the process of carcinogenesis, hence TLR targeting is a promising
approach for cancer prevention.
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Affiliation(s)
- Arunaksharan Narayanankutty
- Division of Cell and Molecular Biology, PG and Research Department of Zoology, St. Joseph’s College (Autonomous), Devagiri, Calicut, Kerala-673 008, India
| | | | - Joice T. Job
- Division of Cell and Molecular Biology, PG and Research Department of Zoology, St. Joseph’s College (Autonomous), Devagiri, Calicut, Kerala-673 008, India
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Shaito A, Thuan DTB, Phu HT, Nguyen THD, Hasan H, Halabi S, Abdelhady S, Nasrallah GK, Eid AH, Pintus G. Herbal Medicine for Cardiovascular Diseases: Efficacy, Mechanisms, and Safety. Front Pharmacol 2020; 11:422. [PMID: 32317975 PMCID: PMC7155419 DOI: 10.3389/fphar.2020.00422] [Citation(s) in RCA: 148] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 03/19/2020] [Indexed: 12/11/2022] Open
Abstract
Cardiovascular diseases (CVDs) are a significant health burden with an ever-increasing prevalence. They remain the leading causes of morbidity and mortality worldwide. The use of medicinal herbs continues to be an alternative treatment approach for several diseases including CVDs. Currently, there is an unprecedented drive for the use of herbal preparations in modern medicinal systems. This drive is powered by several aspects, prime among which are their cost-effective therapeutic promise compared to standard modern therapies and the general belief that they are safe. Nonetheless, the claimed safety of herbal preparations yet remains to be properly tested. Consequently, public awareness should be raised regarding medicinal herbs safety, toxicity, potentially life-threatening adverse effects, and possible herb–drug interactions. Over the years, laboratory data have shown that medicinal herbs may have therapeutic value in CVDs as they can interfere with several CVD risk factors. Accordingly, there have been many attempts to move studies on medicinal herbs from the bench to the bedside, in order to effectively employ herbs in CVD treatments. In this review, we introduce CVDs and their risk factors. Then we overview the use of herbs for disease treatment in general and CVDs in particular. Further, data on the ethnopharmacological therapeutic potentials and medicinal properties against CVDs of four widely used plants, namely Ginseng, Ginkgo biloba, Ganoderma lucidum, and Gynostemma pentaphyllum, are gathered and reviewed. In particular, the employment of these four plants in the context of CVDs, such as myocardial infarction, hypertension, peripheral vascular diseases, coronary heart disease, cardiomyopathies, and dyslipidemias has been reviewed, analyzed, and critically discussed. We also endeavor to document the recent studies aimed to dissect the cellular and molecular cardio-protective mechanisms of the four plants, using recently reported in vitro and in vivo studies. Finally, we reviewed and reported the results of the recent clinical trials that have been conducted using these four medicinal herbs with special emphasis on their efficacy, safety, and toxicity.
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Affiliation(s)
- Abdullah Shaito
- Department of Biological and Chemical Sciences, Lebanese International University, Beirut, Lebanon
| | - Duong Thi Bich Thuan
- Department of Biochemistry, University of Medicine and Pharmacy, Hue University, Hue City, Vietnam
| | - Hoa Thi Phu
- Department of Biochemistry, University of Medicine and Pharmacy, Hue University, Hue City, Vietnam
| | - Thi Hieu Dung Nguyen
- Department of Physiology, University of Medicine and Pharmacy, Hue University, Hue City, Vietnam
| | - Hiba Hasan
- Institute of Anatomy and Cell Biology, Justus Liebig University Giessen, Giessen, Germany
| | - Sarah Halabi
- Biology Department, Faculty of Arts and Sciences, American University of Beirut, Beirut, Lebanon
| | - Samar Abdelhady
- Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Gheyath K Nasrallah
- Department of Biomedical Sciences, College of Health Sciences, Qatar University, Doha, Qatar
| | - Ali H Eid
- Department of Biomedical Sciences, College of Health Sciences, Qatar University, Doha, Qatar.,Department of Pharmacology and Toxicology, American University of Beirut, Beirut, Lebanon
| | - Gianfranco Pintus
- Department of Medical Laboratory Sciences, University of Sharjah, Sharjah, United Arab Emirates.,Department of Biomedical Sciences, Faculty of Medicine, University of Sassari, Sassari, Italy
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Omidkhoda SF, Razavi BM, Hosseinzadeh H. Protective effects of Ginkgo biloba L. against natural toxins, chemical toxicities, and radiation: A comprehensive review. Phytother Res 2019; 33:2821-2840. [PMID: 31429152 DOI: 10.1002/ptr.6469] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 06/11/2019] [Accepted: 07/13/2019] [Indexed: 12/13/2022]
Abstract
Nowadays in our developing and industrial world, humans' health or even their life is threatened by exposure to poisons. In this situation, detecting a protective compound could be helpful and interesting. In the present article, we collected and reviewed all studies, which have been conducted so far about the protective effects of Ginkgo biloba L. (GB), one of the most ancient medicinal tree species, against toxicities induced by chemical toxic agents, natural toxins, and also radiation. In overall, investigations showed that GB exerts the antioxidant, antiinflammatory, antiapoptotic, and antigenotoxicity effects in different toxicities. There are also some special mechanisms about its protective effects against some specific toxic agents, such as acetylcholine esterase inhibition in the aluminium neurotoxicity or membrane-bond phosphodiesterase activation in the triethyltin toxicity. Ginkgolide A was the most investigated active ingredient of G. biloba leaf extract as a protective compound against toxicities, which had the similar effects of total extract. A few clinical studies have been conducted in this field, which demonstrated the beneficial effects of GB against toxic agents. However, the promising effects of this valuable herbal extract will practically remain useless without carrying out more clinical studies and proving its effects on human beings.
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Affiliation(s)
- Seyedeh Farzaneh Omidkhoda
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - BiBi Marjan Razavi
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hossein Hosseinzadeh
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
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Deregulation of TLR4 signaling pathway characterizes Bicuspid Aortic valve syndrome. Sci Rep 2019; 9:11028. [PMID: 31363123 PMCID: PMC6667442 DOI: 10.1038/s41598-019-47412-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 07/12/2019] [Indexed: 12/20/2022] Open
Abstract
Bicuspid aortic valve (BAV) disease is recognized to be a syndrome with a complex and multifaceted pathophysiology. Its progression is modulated by diverse evolutionary conserved pathways, such as Notch-1 pathway. Emerging evidence is also highlighting the key role of TLR4 signaling pathway in the aortic valve pathologies and their related complications, such as sporadic ascending aorta aneurysms (AAA). Consistent with these observations, we aimed to evaluate the role of TLR4 pathway in both BAV disease and its common complication, such as AAA. To this aim, 70 subjects with BAV (M/F 50/20; mean age: 58.8 ± 14.8 years) and 70 subjects with tricuspid aortic valve (TAV) (M/F 35/35; mean age: 69.1 ± 12.8 years), with and without AAA were enrolled. Plasma assessment, tissue and gene expression evaluations were performed. Consistent with data obtained in the previous study on immune clonotypic T and B altered responses, we found reduced levels of systemic TNF-α, IL-1, IL-6, IL-17 cytokines in BAV cases, either in the presence or absence of AAA, than TAV cases (p < 0.0001 by ANOVA test). Interestingly, we also detected reduced levels of s-TLR4 in BAV cases with or without AAA in comparison to the two groups of TAV subjects (p < 0.0001 by ANOVA test). These results may suggest a deregulation in the activity or in the expression of TLR4 signaling pathway in all BAV cases. Portrait of these data is, indeed, the significantly decreased gene expression of inflammatory cytokines and TLR4, in both normal and aneurysmatic tissue samples, from BAV with AAA than TAV with AAA. In conclusion, our study demonstrates that subjects with BAV display a significant deregulation of TLR4 signaling pathway paralleled by a deregulation of Notch-1 pathway, as previously showed. This data suggests that the crosstalk between the Notch-1 and TLR4 signaling pathways may play a crucial role in both physiological embryological development, and homeostasis and functionality of aortic valve in adult life.
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Fu M, Zou B, An K, Yu Y, Tang D, Wu J, Xu Y, Ti H. Anti-asthmatic activity of alkaloid compounds from Pericarpium Citri Reticulatae (Citrus reticulata 'Chachi'). Food Funct 2019; 10:903-911. [PMID: 30694283 DOI: 10.1039/c8fo01753k] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Pericarpium Citri Reticulatae (PCR, Citrus reticulata 'Chachi', Guangchenpi in Chinese) is one of the most famous Chinese citrus herbal medicines. The in vivo anti-asthmatic activity of 'Chachi' PCR was investigated using a histamine-induced experimental asthma model in Guinea pigs. Two alkaloid-type compounds, synephrine and stachydrine, were analyzed and identified in the 'Chachi' PCR alkaloid fraction. The alkaloid fraction and synephrine protected Guinea pigs against histamine-induced experimental asthma in a dose-dependent manner. The respective application of high, middle, and low doses of the 'Chachi' PCR alkaloid fraction significantly increased specific airway resistance by 284%, 328%, and 355%, and decreased dynamic compliance by 57%, 67%, and 75%. A similar change was observed for synephrine. The expression of eosinophils in bronchoalveolar lavage fluid (BALF) and serum IgE, IL-4, and IL-5 levels in histamine-induced experimental asthmatic Guinea pigs were significantly downregulated by the 'Chachi' PCR alkaloid fraction and synephrine compared to the control group, whereas stachydrine did not impart a statistically significant effect on the expression of tested inflammatory cells (leucocytes, eosinophils, neutrophils, and lymphocytes), immunoglobulin (IgE), or cytokines (IL-4 and IL-5). Pathological changes in lung tissues in each treatment group included the infiltration of inflammatory cells around the bronchia.
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Affiliation(s)
- Manqin Fu
- Sericultural & Agri-Food Research Institute Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou 510610, P. R. China.
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13
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Banjari I, Marček T, Tomić S, Waisundara VY. Forestalling the Epidemics of Parkinson's Disease Through Plant-Based Remedies. Front Nutr 2018; 5:95. [PMID: 30425989 PMCID: PMC6218400 DOI: 10.3389/fnut.2018.00095] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Accepted: 09/27/2018] [Indexed: 12/29/2022] Open
Abstract
Parkinson's disease (PD) as the second leading neurodegenerative disease, imposes a heavy burden among individuals as well as economies worldwide. The main characteristics of PD is a progressive loss of dopaminergic neurons resulting in the loss of motor function, the occurrence of non-motor symptoms, and cognitive decline. Similar to many other chronic diseases, complementary and alternative therapies (CAT) are very popular for the treatment of this disease. This review evaluates six plants, three each from European and Asian traditional medicinal systems: (1) Atropa belladonna, (2) Hyoscyamus niger, (3) Lepidium meyenii, (4) Aspargus racemosus, (5) Mucuna pruriens L., and (6) Gingko biloba. Atropa belladonna, and Hyoscyamus niger in particular, are better known for their poisonous and narcotic effects than as potentially effective plants for the treatment of neurodegenerative diseases. Ginkgo biloba is one of the most widely cultured plants in Traditional Chinese Medicine with high antioxidant potential which contributes to its neuroprotective/ anti-apoptotic activity. The bioactive compounds, anti-neurodegenerative effects and other neuroprotective effects of all six plants are discussed herein.
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Affiliation(s)
- Ines Banjari
- Department of Food and Nutrition Research, Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Tihana Marček
- Department of Food and Nutrition Research, Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Svetlana Tomić
- Department of Neurology, Osijek University Hospital Center, Osijek, Croatia
| | - Viduranga Y Waisundara
- Department of Food Technology, Faculty of Technology, Rajarata University of Sri Lanka, Mihintale, Sri Lanka
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Zuo W, Yan F, Zhang B, Li J, Mei D. Advances in the Studies of Ginkgo Biloba Leaves Extract on Aging-Related Diseases. Aging Dis 2017; 8:812-826. [PMID: 29344418 PMCID: PMC5758353 DOI: 10.14336/ad.2017.0615] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 06/15/2017] [Indexed: 12/17/2022] Open
Abstract
The prevalence of degenerative disorders in public health has promoted in-depth investigations of the underlying pathogenesis and the development of new treatment drugs. Ginkgo biloba leaves extract (EGb) is obtained from Ginkgo biloba leaves and has been used for thousands of years. In recent decades, both basic and clinical studies have established the effects of EGb. It is widely used in various degenerative diseases such as cerebrovascular disease, Alzheimer's disease, macroangiopathy and more. Here, we reviewed several pharmacological mechanisms of EGb, including its antioxidant properties, prevention of mitochondrial dysfunctions, and effect on apoptosis. We also described some clinical applications of EGb, such as its effect on neuro and cardiovascular protection, and anticancer properties. The above biological functions of EGb are mainly focused on aging-related disorders, but its effect on other diseases remains unclear. Thus, through this review, we aim to encourage further studies on EGb and discover more potential applications.
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Affiliation(s)
- Wei Zuo
- Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Feng Yan
- Cerebrovascular Diseases Research Institute, Xuanwu Hospital of Capital Medical University, Beijing, China
- Department of Neurobiology, Capital Medical University, Beijing, China
| | - Bo Zhang
- Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Jiantao Li
- Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Dan Mei
- Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
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15
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Jiang Y, Zeng Y, Huang X, Qin Y, Luo W, Xiang S, Sooranna SR, Pinhu L. Nur77 attenuates endothelin-1 expression via downregulation of NF-κB and p38 MAPK in A549 cells and in an ARDS rat model. Am J Physiol Lung Cell Mol Physiol 2016; 311:L1023-L1035. [PMID: 27765761 PMCID: PMC5206403 DOI: 10.1152/ajplung.00043.2016] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 10/03/2016] [Indexed: 02/07/2023] Open
Abstract
Acute respiratory distress syndrome (ARDS) is characterized by inflammatory injury to the alveolar and capillary barriers that results in impaired gas exchange and severe acute respiratory failure. Nuclear orphan receptor Nur77 has emerged as a regulator of gene expression in inflammation, and its role in the pathogenesis of ARDS is not clear. The objective of this study is to investigate the potential role of Nur77 and its underlying mechanism in the regulation of endothelin-1 (ET-1) expression in lipopolysaccharide (LPS)-induced A549 cells and an ARDS rat model. We demonstrate that LPS induced Nur77 expression and nuclear export in A549 cells. Overexpression of Nur77 markedly decreased basal and LPS-induced ET-1 expression in A549 cells, whereas knockdown of Nur77 increased the ET-1 expression. LPS-induced phosphorylation and nuclear translocation of NF-κB and p38 MAPK were blocked by Nur77 overexpression and augmented by Nur77 knockdown in A549 cells. In vivo, LPS induced Nur77 expression in lung in ARDS rats. Pharmacological activation of Nur77 by cytosporone B (CsnB) inhibited ET-1 expression in ARDS rats, decreased LPS-induced phosphorylation of NF-κB and p38 MAPK, and relieved lung, liver, and kidney injury. Pharmacological deactivation of Nur77 by 1,1-bis-(3'-indolyl)-1-(p-hydroxyphenyl)methane (DIM-C-pPhOH, C-DIM8) had no effect on ET-1 expression and lung injury. These results indicated that Nur77 decreases ET-1 expression by suppressing NF-κB and p38 MAPK in LPS-stimulated A549 cells in vitro, and, in an LPS-induced ARDS rat model, CsnB reduced ET-1 expression and lung injury in ARDS rats.
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MESH Headings
- A549 Cells
- Active Transport, Cell Nucleus/drug effects
- Animals
- Cell Nucleus/drug effects
- Cell Nucleus/metabolism
- Disease Models, Animal
- Down-Regulation/drug effects
- Endothelin-1/metabolism
- Kidney/drug effects
- Kidney/pathology
- Lipopolysaccharides/pharmacology
- Liver/drug effects
- Liver/pathology
- Lung/drug effects
- Lung/metabolism
- Male
- NF-kappa B/metabolism
- Nuclear Receptor Subfamily 4, Group A, Member 1/agonists
- Nuclear Receptor Subfamily 4, Group A, Member 1/genetics
- Nuclear Receptor Subfamily 4, Group A, Member 1/metabolism
- Phenylacetates/pharmacology
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Rats, Sprague-Dawley
- Respiratory Distress Syndrome/enzymology
- Respiratory Distress Syndrome/genetics
- Respiratory Distress Syndrome/pathology
- p38 Mitogen-Activated Protein Kinases/metabolism
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Affiliation(s)
- Yujie Jiang
- The First Clinical Medical College of Jinan University, Guangzhou, Guangdong Province, China
- Department of Respiratory Medicine
| | - Yi Zeng
- Department of Central Laboratory, Youjiang Medical University for Nationalities, Baise, Guangxi, China
| | - Xia Huang
- The First Clinical Medical College of Jinan University, Guangzhou, Guangdong Province, China
- Department of Respiratory Medicine
| | - Yueqiu Qin
- Department of Digestive, Youjiang Medical University for Nationalities, Baise, Guangxi, China; Youjiang Medical University for Nationalities, Baise, Guangxi, China
| | | | - Shulin Xiang
- Department of Intensive Care Unit, the People's Hospital of Guangxi, Nanning, Guangxi, China
| | - Suren R Sooranna
- Department of Surgery and Cancer, Imperial College London, Chelsea and Westminster Hospital, London, United Kingdon; and
| | - Liao Pinhu
- Department of Intensive Care Medicine, Youjiang Medical University for Nationalities, Baise, Guangxi, China
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Saleh Al-Shehabi T, Iratni R, Eid AH. Anti-atherosclerotic plants which modulate the phenotype of vascular smooth muscle cells. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2016; 23:1068-1081. [PMID: 26776961 DOI: 10.1016/j.phymed.2015.10.016] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 10/27/2015] [Accepted: 10/30/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND Cardiovascular disease (CVD) remains the leading cause of global death, with atherosclerosis being a major contributor to this mortality. Several mechanisms are implicated in the pathogenesis of this disease. A key element in the development and progression of atherosclerotic lesions is the phenotype of vascular smooth muscle cells. Under pathophysiologic conditions such as injury, these cells switch from a contractile to a synthetic phenotype that often possesses high proliferative and migratory capacities. PURPOSE Despite major advances made in the management and treatment of atherosclerosis, mortality associated with this disease remains high. This mandates that other approaches be sought. Herbal medicine, especially for the treatment of CVD, has been gaining more attention in recent years. This is in no small part due to the evidence-based values associated with the consumption of many plants as well as the relatively cheaper prices, easier access and conventional folk medicine "inherited" over generations. Sections: In this review, we provide a brief introduction about the pathogenesis of atherosclerosis then we highlight the role of vascular smooth muscle cells in this disease, especially when a phenotypic switch of these cells arises. We then thoroughly discuss the various plants that show potentially beneficial effects as anti-atherosclerotic, with prime attention given to herbs and plants that inhibit the phenotypic switch of vascular smooth muscle cells. CONCLUSION Accumulating evidence provides the justification for the use of botanicals in the treatment or prevention of atherosclerosis. However, further studies, especially clinical ones, are warranted to better define several pharmacological parameters of these herbs, such as toxicity, tolerability, and efficacy.
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Affiliation(s)
- Tuqa Saleh Al-Shehabi
- Department of Health Sciences, College of Arts and Sciences, Qatar University, Doha, Qatar.
| | - Rabah Iratni
- Department of Biology, College of Science, United Arab Emirates University, PO Box 15551, Al Ain, United Arab Emirates.
| | - Ali H Eid
- Department of Pharmacology and Toxicology, Faculty of Medicine, American University of Beirut, PO Box 11-0236, Beirut, Lebanon ; Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, Doha, Qatar.
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Liu PL, Chong IW, Lee YC, Tsai JR, Wang HM, Hsieh CC, Kuo HF, Liu WL, Chen YH, Chen HL. Anti-inflammatory Effects of Resveratrol on Hypoxia/Reoxygenation-Induced Alveolar Epithelial Cell Dysfunction. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:9480-9487. [PMID: 26466890 DOI: 10.1021/acs.jafc.5b01168] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Reducing oxidative stress is crucial to prevent hypoxia-reoxygenation (H/R)-induced lung injury. Resveratrol has excellent antioxidant and anti-inflammatory effects, and this study investigated its role in H/R-induced type II pneumocyte dysfunction. H/R conditions increased expression of inflammatory cytokines including interleukin (IL)-1β (142.3 ± 21.2%, P < 0.05) and IL-6 (301.9 ± 35.1%, P < 0.01) in a type II alveolar epithelial cell line (A549), while the anti-inflammatory cytokine IL-10 (64.6 ± 9.8%, P < 0.05) and surfactant proteins (SPs) decreased. However, resveratrol treatment effectively inhibited these effects. H/R significantly activated an inflammatory transcription factor, nuclear factor (NF)-κB, while resveratrol significantly inhibited H/R-induced NF-κB transcription activities. To the best of our knowledge, this is the first study showing resveratrol-mediated reversal of H/R-induced inflammatory responses and dysfunction of type II pneumocyte cells in vitro. The effects of resveratrol were partially mediated by promoting SP expression and inhibiting inflammation with NF-κB pathway involvement. Therefore, our study provides new insights into mechanisms underlying the action of resveratrol in type II pneumocyte dysfunction.
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Affiliation(s)
- Po-Len Liu
- Department of Respiratory Therapy, Department of Fragrance and Cosmetic Science, College of Medicine, Kaohsiung Medical University , Kaohsiung 807, Taiwan
| | - Inn-Wen Chong
- Department of Respiratory Therapy, Department of Fragrance and Cosmetic Science, College of Medicine, Kaohsiung Medical University , Kaohsiung 807, Taiwan
- Department of Pediatrics, Department of Internal Medicine, Department of Chest Surgery, Division of Cardiovascular Surgery, Department of Surgery, Kaohsiung Medical University Hospital , Kaohsiung 807, Taiwan
| | - Yi-Chen Lee
- Department of Respiratory Therapy, Department of Fragrance and Cosmetic Science, College of Medicine, Kaohsiung Medical University , Kaohsiung 807, Taiwan
| | - Jong-Rung Tsai
- Department of Respiratory Therapy, Department of Fragrance and Cosmetic Science, College of Medicine, Kaohsiung Medical University , Kaohsiung 807, Taiwan
- Department of Pediatrics, Department of Internal Medicine, Department of Chest Surgery, Division of Cardiovascular Surgery, Department of Surgery, Kaohsiung Medical University Hospital , Kaohsiung 807, Taiwan
| | - Hui-Min Wang
- Department of Respiratory Therapy, Department of Fragrance and Cosmetic Science, College of Medicine, Kaohsiung Medical University , Kaohsiung 807, Taiwan
| | - Chong-Chao Hsieh
- Department of Pediatrics, Department of Internal Medicine, Department of Chest Surgery, Division of Cardiovascular Surgery, Department of Surgery, Kaohsiung Medical University Hospital , Kaohsiung 807, Taiwan
| | - Hsuan-Fu Kuo
- Department of Internal Medicine, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung Medical University Hospital, Kaohsiung Medical University , Kaohsiung 801, Taiwan
| | - Wei-Lun Liu
- Department of Intensive Care Medicine, Chi Mei Medical Center , Tainan 736, Taiwan
| | - Yung-Hsiang Chen
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University , Taichung 404, Taiwan
- Department of Medical Research, China Medical University Hospital , Taichung 404, Taiwan
- Department of Psychology, College of Medical and Health Science, Asia University , Taichung 413, Taiwan
| | - Hsiu-Lin Chen
- Department of Respiratory Therapy, Department of Fragrance and Cosmetic Science, College of Medicine, Kaohsiung Medical University , Kaohsiung 807, Taiwan
- Department of Pediatrics, Department of Internal Medicine, Department of Chest Surgery, Division of Cardiovascular Surgery, Department of Surgery, Kaohsiung Medical University Hospital , Kaohsiung 807, Taiwan
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Rtibi K, Jabri MA, Selmi S, Souli A, Sebai H, El-Benna J, Amri M, Marzouki L. Carob pods (Ceratonia siliqua L.) inhibit human neutrophils myeloperoxidase and in vitro ROS-scavenging activity. RSC Adv 2015. [DOI: 10.1039/c5ra14719k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Chromatographic profiles of aqueous extract of carob pods ((A) pulp and (B) seeds).
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Affiliation(s)
- Kaïs Rtibi
- Laboratoire de Neurophysiologie Fonctionnelle et Pathologies
- Département des Sciences Biologiques
- Faculté des Sciences de Tunis
- Tunis
- Tunisia
| | - Mohamed Amine Jabri
- Laboratoire de Physiologie Fonctionnelle et Valorisation des Bio-Resources
- Institut Supérieur de Biotechnologie de Béja
- Université de Jendouba
- 382-9000 Béja
- Tunisia
| | - Slimen Selmi
- Laboratoire de Physiologie Fonctionnelle et Valorisation des Bio-Resources
- Institut Supérieur de Biotechnologie de Béja
- Université de Jendouba
- 382-9000 Béja
- Tunisia
| | - Abdelaziz Souli
- Laboratoire de Neurophysiologie Fonctionnelle et Pathologies
- Département des Sciences Biologiques
- Faculté des Sciences de Tunis
- Tunis
- Tunisia
| | - Hichem Sebai
- Laboratoire de Physiologie Fonctionnelle et Valorisation des Bio-Resources
- Institut Supérieur de Biotechnologie de Béja
- Université de Jendouba
- 382-9000 Béja
- Tunisia
| | - Jamel El-Benna
- INSERM U773 Centre de Recherche Biomédicale
- Faculté de Médecine X. Bichat
- 75018 Paris
- France
| | - Mohamed Amri
- Laboratoire de Neurophysiologie Fonctionnelle et Pathologies
- Département des Sciences Biologiques
- Faculté des Sciences de Tunis
- Tunis
- Tunisia
| | - Lamjed Marzouki
- Laboratoire de Physiologie Fonctionnelle et Valorisation des Bio-Resources
- Institut Supérieur de Biotechnologie de Béja
- Université de Jendouba
- 382-9000 Béja
- Tunisia
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Chen SY, Chen CH, Huang YC, Chan CJ, Chen DC, Tsai FJ. Genetic susceptibility to idiopathic membranous nephropathy in high-prevalence Area, Taiwan. Biomedicine (Taipei) 2014; 4:9. [PMID: 25520922 PMCID: PMC4265015 DOI: 10.7603/s40681-014-0009-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Accepted: 05/04/2014] [Indexed: 12/24/2022] Open
Abstract
Idiopathic membranous nephropathy (MN) is one common cause of idiopathic nephrotic syndrome in adults; 25% of MN patients proceed to end-stage renal disease. In adults, membranous nephropathy is a lead cause of nephrotic syndrome, with about 75% of the cases idiopathic. Secondary causes include autoimmune disease, infection, drugs and malignancy. Three hypotheses about pathogenesis have surfaced: preformed immune complex, in situ immune complex formation, and auto-antibody against podocyte membrane antigen. Pathogenesis does involve immune complex formation with later deposition in sub-epithelial sites, but definite mechanism is still unknown. Several genes were recently proven associated with primary membranous nephropathy in Taiwan: IL-6, NPHS1, TLR-4, TLR-9, STAT4, and MYH9 . These may provide a useful tool for diagnosis and prognosis. This article reviews epidemiology and lends new information on KIRREL2 (rs443186 and rs447707) polymorphisms as underlying causes of MN; polymorphisms revealed by this study warrant further investigation.
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Affiliation(s)
- Shih-Yin Chen
- Genetics Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan ; Graduate Institute of Chinese Medical Science, China Medical University, Taichung, Taiwan ; Department of Biotechnology and Bioinformatics, Asia University, Taichung, Taiwan
| | - Cheng-Hsu Chen
- Division of Nephrology, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Yu-Chuen Huang
- Genetics Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan ; Graduate Institute of Chinese Medical Science, China Medical University, Taichung, Taiwan
| | - Chia-Jung Chan
- Genetics Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Da-Chung Chen
- Taiwan LandSeed Hospital, Pingjen City, Taoyuan, Taiwan ; Department of Chemical and Materials Engineering, National Central University, Taoyuan, Taiwan
| | - Fuu-Jen Tsai
- Department of Pediatrics, China Medical University Hospital, Taichung, Taiwan ; Department of Medical Genetics, China Medical University Hospital, No. 2, Yuh Der Road, 404, Taichung, Taiwan ; Department of Biotechnology and Bioinformatics, Asia University, Taichung, Taiwan
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20
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Toona sinensis inhibits LPS-induced inflammation and migration in vascular smooth muscle cells via suppression of reactive oxygen species and NF-κB signaling pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2014; 2014:901315. [PMID: 24723997 PMCID: PMC3960752 DOI: 10.1155/2014/901315] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 01/15/2014] [Accepted: 01/23/2014] [Indexed: 12/22/2022]
Abstract
Toona sinensis is one of the most popular vegetarian cuisines in Taiwan and it has been shown to possess antioxidant, antiangiogenic, and anticancer properties. In this study, we investigated the antiatherosclerotic potential of aqueous leaf extracts from Toona sinensis (TS; 25–100 μg/mL) and its major bioactive compound, gallic acid (GA; 5 μg/mL), in LPS-treated rat aortic smooth muscle (A7r5) cells. We found that pretreatment with noncytotoxic concentrations of TS and GA significantly inhibited inflammatory NO and PGE2 production by downregulating their precursors, iNOS and COX-2, respectively, in LPS-treated A7r5 cells. Furthermore, TS and GA inhibited LPS-induced intracellular ROS and their corresponding mediator, p47phox. Notably, TS and GA pretreatment significantly inhibited LPS-induced migration in transwell assays. Gelatin zymography and western blotting demonstrated that treatment with TS and GA suppressed the activity or expression of MMP-9, MMP-2, and t-PA. Additionally, TS and GA significantly inhibited LPS-induced VEGF, PDGF, and VCAM-1 expression. Further investigation revealed that the inhibition of iNOS/COX-2, MMPs, growth factors, and adhesion molecules was associated with the suppression of NF-κB activation and MAPK (ERK1/2, JNK1/2, and p38) phosphorylation. Thus, Toona sinensis may be useful for the prevention of atherosclerosis.
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21
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Wu Q, Li R, Soromou LW, Chen N, Yuan X, Sun G, Li B, Feng H. p-Synephrine suppresses lipopolysaccharide-induced acute lung injury by inhibition of the NF-κB signaling pathway. Inflamm Res 2014; 63:429-39. [PMID: 24487736 DOI: 10.1007/s00011-014-0715-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Revised: 12/06/2013] [Accepted: 01/22/2014] [Indexed: 01/01/2023] Open
Abstract
OBJECTIVE We investigated whether p-synephrine exerts potent anti-inflammatory effects against acute lung injury (ALI) induced by lipopolysaccharide (LPS) in vivo, and we further investigated the inhibitory mechanism of p-synephrine in LPS-induced ALI. METHODS Lipopolysaccharide (0.5 mg/kg) was instilled intranasally in phosphate-buffered saline to induce acute lung injury, and 6, 24, and 48 h after LPS was given, bronchoalveolar lavage fluid was obtained to measure pro-inflammatory mediator. We also evaluated the effects of p-synephrine on LPS-induced the severity of pulmonary injury. The phosphorylation of nuclear factor-κB (NF-κB) p65 protein was analyzed by Western blotting. RESULTS Our data showed that p-synephrine significantly reduced the amount of inflammatory cells, the lung wet-to-dry weight (W/D) ratio, reactive oxygen species, myeloperoxidase activity and enhanced superoxide dismutase (SOD) in mice with LPS-induced ALI. Tumor necrosis factor α and interleukin (IL)-6 concentrations decreased significantly while the concentration of IL-10 was significantly increased after p-synephrine pretreatment. In addition, p-synephrine suppressed not only the phosphorylation of NF-κB but also the degradation of its inhibitor (IκBα). CONCLUSIONS These results suggested that the inhibition of NF-κB activation and the regulation of SOD are involved in the mechanism of p-synephrine's protection against ALI.
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Affiliation(s)
- Qianchao Wu
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, Jilin, 130062, People's Republic of China
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Natural compounds as modulators of NADPH oxidases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:271602. [PMID: 24381714 PMCID: PMC3863456 DOI: 10.1155/2013/271602] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Accepted: 10/09/2013] [Indexed: 12/20/2022]
Abstract
Reactive oxygen species (ROS) are cellular signals generated ubiquitously by all mammalian cells, but their relative unbalance triggers also diseases through intracellular damage to DNA, RNA, proteins, and lipids. NADPH oxidases (NOX) are the only known enzyme family with the sole function to produce ROS. The NOX physiological functions concern host defence, cellular signaling, regulation of gene expression, and cell differentiation. On the other hand, increased NOX activity contributes to a wide range of pathological processes, including cardiovascular diseases, neurodegeneration, organ failure, and cancer. Therefore targeting these enzymatic ROS sources by natural compounds, without affecting the physiological redox state, may be an important tool. This review summarizes the current state of knowledge of the role of NOX enzymes in physiology and pathology and provides an overview of the currently available NADPH oxidase inhibitors derived from natural extracts such as polyphenols.
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23
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Chen YJ, Tsai KS, Chiu CY, Yang TH, Lin TH, Fu WM, Chen CF, Yang RS, Liu SH. EGb761 inhibits inflammatory responses in human chondrocytes and shows chondroprotection in osteoarthritic rat knee. J Orthop Res 2013; 31:1032-8. [PMID: 23483610 DOI: 10.1002/jor.22339] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Accepted: 02/08/2013] [Indexed: 02/04/2023]
Abstract
Osteoarthritis (OA) is a degenerative joint disease involving a combination of cartilage degradation and inflammation. EGb761, a standardized extract of Ginkgo biloba leaves, holds an anti-inflammatory potency. Here, we determined whether EGb761 could inhibit lipopolysaccharide (LPS)- and IL-1β-induced inflammatory responses in human articular chondrocytes and apply the chondroprotection in OA rats. We found that LPS markedly induced the productions of PGE2 and NO and the protein expressions of COX-2 and iNOS in human chondrocytes. LPS was also seen to up-regulate the expressions of toll-like receptor-4 (TLR4), its downstream signal TNF receptor-associated factor 6 (TRAF6), and nuclear factor (NF)-κB signaling. These LPS-induced inflammatory responses were efficaciously reversed by EGb761 and its active components quercetin and kampferol. The similar results could be observed by using IL-1β as an in vitro model to mimic an inflammatory response. In an OA rat model, PGE2 and NO levels in blood, the histological alterations, and COX-2 and nitrotyrosine expressions in cartilages were markedly increased, which were effectively reversed by EGb761. Our results suggested that EGb761 exerts the anti-inflammatory effects on human articular chondrocytes and OA rats.
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Affiliation(s)
- Ying Ju Chen
- Institute of Toxicology, College of Medicine, National Taiwan University, Taipei, Taiwan
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Wang J, Guo Y, Chu H, Guan Y, Bi J, Wang B. Multiple functions of the RNA-binding protein HuR in cancer progression, treatment responses and prognosis. Int J Mol Sci 2013; 14:10015-41. [PMID: 23665903 PMCID: PMC3676826 DOI: 10.3390/ijms140510015] [Citation(s) in RCA: 202] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 04/22/2013] [Accepted: 04/25/2013] [Indexed: 12/16/2022] Open
Abstract
The human embryonic lethal abnormal vision-like protein, HuR, is a member of the Hu family of RNA-binding proteins. Over the past decade, this ubiquitously expressed protein has been extensively investigated in cancer research because it is involved in the regulation of mRNA stability and translation in many cell types. HuR activity and function is associated with its subcellular distribution, transcriptional regulation, translational and post-translational modifications. HuR regulation of target mRNAs is based on the interaction between the three specific domains of HuR protein and one or several U- or AU-rich elements (AREs) in the untranslated region of target mRNAs. A number of cancer-related transcripts containing AREs, including mRNAs for proto-oncogenes, cytokines, growth factors, and invasion factors, have been characterized as HuR targets. It has been proposed that HuR has a central tumorigenic activity by enabling multiple cancer phenotypes. In this review, we comprehensively survey the existing evidence with regard to the diverse functions of HuR in caner development and progression. The current data also suggest that HuR might be a novel and promising therapeutic target and a marker for treatment response and prognostic evaluation.
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Affiliation(s)
- Jun Wang
- Department of Oncology, General Hospital, Jinan Command of the People’s Liberation Army, Jinan 250031, China; E-Mails: (H.C.); (Y.G.); (J.B.); (B.W.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +86-531-5166-5336; Fax: +86-531-5166-6649
| | - Yan Guo
- Department of Outpatient, Military Command of Shandong Province, Jinan 250013, China; E-Mail:
| | - Huili Chu
- Department of Oncology, General Hospital, Jinan Command of the People’s Liberation Army, Jinan 250031, China; E-Mails: (H.C.); (Y.G.); (J.B.); (B.W.)
| | - Yaping Guan
- Department of Oncology, General Hospital, Jinan Command of the People’s Liberation Army, Jinan 250031, China; E-Mails: (H.C.); (Y.G.); (J.B.); (B.W.)
| | - Jingwang Bi
- Department of Oncology, General Hospital, Jinan Command of the People’s Liberation Army, Jinan 250031, China; E-Mails: (H.C.); (Y.G.); (J.B.); (B.W.)
| | - Baocheng Wang
- Department of Oncology, General Hospital, Jinan Command of the People’s Liberation Army, Jinan 250031, China; E-Mails: (H.C.); (Y.G.); (J.B.); (B.W.)
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Shimizu K, Taniyama Y, Sanada F, Iwabayashi M, Azuma J, Iekushi K, Katsuragi N, Otsu R, Shibata K, Ishikawa Y, Rakugi H, Morishita R. Novel mechanism of hepatocyte growth factor against prevention of inflammation and oxidative stress. Inflamm Regen 2013. [DOI: 10.2492/inflammregen.33.136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Ou HC, Hsieh YL, Yang NC, Tsai KL, Chen KL, Tsai CS, Chen IJ, Wu BT, Lee SD. Ginkgo biloba extract attenuates oxLDL-induced endothelial dysfunction via an AMPK-dependent mechanism. J Appl Physiol (1985) 2012. [PMID: 23195633 DOI: 10.1152/japplphysiol.00367.2012] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Atherosclerosis is a complex inflammatory arterial disease, and oxidized low-density lipoprotein (oxLDL) is directly associated with chronic vascular inflammation. Previous studies have shown that Ginkgo biloba extract (GbE) acts as a therapeutic agent for neurological and cardiovascular disorders. However, the mechanisms mediating the actions of GbE are still largely unknown. In the present study, we tested the hypothesis that GbE protects against oxLDL-induced endothelial dysfunction via an AMP-activated protein kinase (AMPK)-dependent mechanism. Human umbilical vein endothelial cells were treated with GbE, followed by oxLDL, for indicated time periods. Results from Western blot showed that GbE inhibited the membrane translocation of the NADPH oxidase subunits p47(phox) and Rac-1 and attenuated the increase in protein expression of membrane subunits gp91 and p22(phox) caused by oxLDL-induced AMPK dephosphorylation and subsequent PKC activation. AMPK-α(1)-specific small interfering RNA-transfected cells that had been exposed to GbE followed by oxLDL revealed elevated levels of PKC and p47(phox). In addition, exposure to oxLDL resulted in reduced AMPK-mediated Akt/endothelial nitric oxide (NO) synthase signaling and the induction of phosphorylation of p38 mitogen-activated protein kinase, which, in turn, activated NF-κB-mediated inflammatory responses, such as the release of interleukin-8, the expression of the adhesion molecule, and the adherence of monocytic cells to human umbilical vein endothelial cells. Furthermore, oxLDL upregulated the expression of inducible NO synthase, thereby augmenting the formation of NO and protein nitrosylation. Pretreatment with GbE, however, exerted significant cytoprotective effects in a dose-dependent manner. Results from this study may provide insight into a possible molecular mechanism by which GbE protects against oxLDL-induced endothelial dysfunction.
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Affiliation(s)
- Hsiu-Chung Ou
- Department of Physical Therapy and Graduate Institute of Rehabilitation Science, China Medical University, Taichung, Taiwan
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Chahal DS, Sivamani RK, Rivkah Isseroff R, Dasu MR. Plant-Based Modulation of Toll-like Receptors: An Emerging Therapeutic Model. Phytother Res 2012; 27:1423-38. [DOI: 10.1002/ptr.4886] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Revised: 10/16/2012] [Accepted: 10/20/2012] [Indexed: 01/09/2023]
Affiliation(s)
- Dev S. Chahal
- Department of Dermatology; University of California-Davis; Sacramento CA, USA
| | - Raja K. Sivamani
- Department of Dermatology; University of California-Davis; Sacramento CA, USA
| | - R. Rivkah Isseroff
- Department of Dermatology; University of California-Davis; Sacramento CA, USA
- Department of Dermatology; Veterans Affairs; Mather CA, USA
| | - Mohan R. Dasu
- Department of Dermatology; University of California-Davis; Sacramento CA, USA
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Shimizu K, Taniyama Y, Sanada F, Azuma J, Iwabayashi M, Iekushi K, Rakugi H, Morishita R. Hepatocyte Growth Factor Inhibits Lipopolysaccharide-Induced Oxidative Stress via Epithelial Growth Factor Receptor Degradation. Arterioscler Thromb Vasc Biol 2012; 32:2687-93. [DOI: 10.1161/atvbaha.112.300041] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective—
Lipopolysaccharide (LPS) triggers sepsis and systemic inflammatory response syndrome, which results in multiple organ failure. Our recent reports demonstrated that hepatocyte growth factor (HGF) attenuated angiotensin II–induced oxidative stress via epithelial growth factor receptor (EGFR) degradation in vascular smooth muscle cells. Here, we examined whether HGF can protect against systemic inflammatory response syndrome induced by LPS and investigated the mechanism.
Methods and Results—
HGF inhibited the increase in the expression of vascular cell adhesion molecule-1 and EGFR by LPS in vitro. HGF inhibited colocalization of EGFR and Src homology domain 2–containing inositol 5′-phosphatase 2. Furthermore, HGF inhibited reactive oxygen species production. We also injected LPS into HGF transgenic mice with increased HGF serum concentration and their littermates. HGF transgenic mice reduced LPS-induced vascular cell adhesion molecule-1 and reactive oxygen species compared with control, accompanied by significant EGFR degradation. Furthermore, HGF transgenic mice significantly improved survival in the LPS injection model.
Conclusion—
The present study revealed inhibition of LPS-induced vascular cell adhesion molecule-1 expression by HGF via the degradation of EGFR. We demonstrated that HGF regulated Src homology domain 2–containing inositol 5′-phosphatase 2 recruitment to EGFR and inhibited LPS-induced inflammation via EGFR degradation. This effect of HGF may be useful for the treatment of inflammatory disease.
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Affiliation(s)
- Kazutaka Shimizu
- From the Departments of Clinical Gene Therapy (K.S., Y.T., F.S., J.A., M.I., K.I., R.M.) and Geriatric Medicine and Nephrology (Y.T., J.A., K.I., H.R.), Osaka University Graduate School of Medicine, Yamadaoka, Suita, Japan
| | - Yoshiaki Taniyama
- From the Departments of Clinical Gene Therapy (K.S., Y.T., F.S., J.A., M.I., K.I., R.M.) and Geriatric Medicine and Nephrology (Y.T., J.A., K.I., H.R.), Osaka University Graduate School of Medicine, Yamadaoka, Suita, Japan
| | - Fumihiro Sanada
- From the Departments of Clinical Gene Therapy (K.S., Y.T., F.S., J.A., M.I., K.I., R.M.) and Geriatric Medicine and Nephrology (Y.T., J.A., K.I., H.R.), Osaka University Graduate School of Medicine, Yamadaoka, Suita, Japan
| | - Junya Azuma
- From the Departments of Clinical Gene Therapy (K.S., Y.T., F.S., J.A., M.I., K.I., R.M.) and Geriatric Medicine and Nephrology (Y.T., J.A., K.I., H.R.), Osaka University Graduate School of Medicine, Yamadaoka, Suita, Japan
| | - Masaaki Iwabayashi
- From the Departments of Clinical Gene Therapy (K.S., Y.T., F.S., J.A., M.I., K.I., R.M.) and Geriatric Medicine and Nephrology (Y.T., J.A., K.I., H.R.), Osaka University Graduate School of Medicine, Yamadaoka, Suita, Japan
| | - Kazuma Iekushi
- From the Departments of Clinical Gene Therapy (K.S., Y.T., F.S., J.A., M.I., K.I., R.M.) and Geriatric Medicine and Nephrology (Y.T., J.A., K.I., H.R.), Osaka University Graduate School of Medicine, Yamadaoka, Suita, Japan
| | - Hiromi Rakugi
- From the Departments of Clinical Gene Therapy (K.S., Y.T., F.S., J.A., M.I., K.I., R.M.) and Geriatric Medicine and Nephrology (Y.T., J.A., K.I., H.R.), Osaka University Graduate School of Medicine, Yamadaoka, Suita, Japan
| | - Ryuichi Morishita
- From the Departments of Clinical Gene Therapy (K.S., Y.T., F.S., J.A., M.I., K.I., R.M.) and Geriatric Medicine and Nephrology (Y.T., J.A., K.I., H.R.), Osaka University Graduate School of Medicine, Yamadaoka, Suita, Japan
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Chen JS, Chen YH, Huang PH, Tsai HY, Chen YL, Lin SJ, Chen JW. Ginkgo biloba extract reduces high-glucose-induced endothelial adhesion by inhibiting the redox-dependent interleukin-6 pathways. Cardiovasc Diabetol 2012; 11:49. [PMID: 22553973 PMCID: PMC3434011 DOI: 10.1186/1475-2840-11-49] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Accepted: 05/03/2012] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Chronic elevation of glucose level activates vascular inflammation and increases endothelial adhesiveness to monocytes, an early sign of atherogenesis. This study aimed to elucidate the detailed mechanisms of high-glucose-induced endothelial inflammation, and to investigate the potential effects of Ginkgo biloba extract (GBE), an antioxidant herbal medicine, on such inflammation. MATERIALS AND METHODS Human aortic endothelial cells were cultured in high glucose or mannitol as osmotic control for 4 days. The expression of cytokines and adhesion molecules and the adhesiveness of endothelial cells to monocytes were examined. The effects of pretreatment of GBE or N-acetylcysteine, an antioxidant, were also investigated. RESULTS Either high glucose or mannitol significantly increased reactive oxygen species (ROS) production, interleukin-6 secretion, intercellular adhesion molecule-1 (ICAM-1) expression, as well as endothelial adhesiveness to monocytes. The high-glucose-induced endothelial adhesiveness was significantly reduced either by an anti-ICAM-1 antibody or by an interleukin-6 neutralizing antibody. Interleukin-6 (5 ng/ml) significantly increased endothelial ICAM-1 expression. Piceatannol, a signal transducer and activator of transcription (STAT) 1/3 inhibitor, but not fludarabine, a STAT1 inhibitor, suppressed high-glucose-induced ICAM-1 expression. Pretreatment with GBE or N-acetylcysteine inhibited high-glucose-induced ROS, interleukin-6 production, STAT1/3 activation, ICAM-1 expression, and endothelial adhesiveness to monocytes. CONCLUSIONS Long-term presence of high glucose induced STAT3 mediated ICAM-1 dependent endothelial adhesiveness to monocytes via the osmotic-related redox-dependent interleukin-6 pathways. GBE reduced high-glucose-induced endothelial inflammation mainly by inhibiting interleukin-6 activation. Future study is indicated to validate the antioxidant/anti-inflammatory strategy targeting on interleukin-6 for endothelial protection in in vivo and clinical hyperglycemia.
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Affiliation(s)
- Jia-Shiong Chen
- Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan, Republic of China
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Lee YW, Lin JA, Chang CC, Chen YH, Liu PL, Lee AW, Tsai JC, Li CY, Tsai CS, Chen TL, Lin FY. Ginkgo biloba extract suppresses endotoxin-mediated monocyte activation by inhibiting nitric oxide- and tristetraprolin-mediated toll-like receptor 4 expression. J Nutr Biochem 2011; 22:351-9. [DOI: 10.1016/j.jnutbio.2010.03.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2009] [Revised: 02/19/2010] [Accepted: 03/02/2010] [Indexed: 02/03/2023]
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Abstract
Lysimachia clethroides is widely used in traditional herbal medicine for many purposes, especially for blood vessel-related diseases in Korea and East Asia. Experiments were undertaken to determine whether hydro-alcoholic extract obtained from L. clethroides (LCE) has vasorelaxant activity in the rat aorta rings and, if so, to elucidate the underlying mechanism. Rat aorta rings were suspended in organ chambers for the measurement of changes in isometric tension in the presence or absence of several inhibitors. LCE induced endothelium-dependent vasodilation (ED50 = 6.1 mug/mL) and that was abolished by nitric oxide synthase inhibitor, N-nitro-L-arginine, and guanylyl cyclase inhibitor, 1H-[1,2,4] oxadiazolo [4,3-a] quinoxalin-1-one, PI3-kinase inhibitor, wortmannin, and cell permeable superoxide dismutase. In addition, LCE decreased vessels contraction by phenylephrine. Prostaglandin synthesis inhibitor, indometacin, and inhibitors of endothelium-derived hyperpolarizing factor, charybdotoxin plus apamin, did not affect vasodilatory effect of LCE. In cultured endothelial cells, LCE-induced phosphorylation of serine 1177-endothelial nitric oxide synthase and serine 473-Akt. LCE inhibited strongly nicotinamide adenine dinucleotide phosphate (NADPH) oxidase activity in smooth muscle cells and angiotensin II-induced contraction of rat aorta. Finally, increased oxidative stress in rat aorta-induced by angiotensin II is ameliorated by LCE. Taken together, LCE induces an endothelium-dependent vasodilation and might be involved, at least in part, the activation of the nitric oxide-cyclic guanosine monophosphate pathway. In addition, LCE decreases oxidative stress in aorta by inhibition of NADPH oxidase activity. The present findings indicate that LCE could be a candidate of herbal medicine for cardiovascular diseases associated with disturbed NO production and endothelial dysfunction.
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Heo SK, Yi HS, Yun HJ, Ko CH, Choi JW, Park SD. Ethylacetate extract from Draconis Resina inhibits LPS-induced inflammatory responses in vascular smooth muscle cells and macrophages via suppression of ROS production. Food Chem Toxicol 2010; 48:1129-36. [DOI: 10.1016/j.fct.2009.06.043] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2009] [Revised: 06/24/2009] [Accepted: 06/26/2009] [Indexed: 01/04/2023]
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Ou HC, Lee WJ, Lee IT, Chiu TH, Tsai KL, Lin CY, Sheu WHH. Ginkgo biloba extract attenuates oxLDL-induced oxidative functional damages in endothelial cells. J Appl Physiol (1985) 2009; 106:1674-85. [DOI: 10.1152/japplphysiol.91415.2008] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Atherosclerosis is a chronic inflammatory process with increased oxidative stress in vascular endothelium. Ginkgo biloba extract (GbE), extracted from Ginkgo biloba leaves, has commonly been used as a therapeutic agent for cardiovascular and neurological disorders. The aim of this study was to investigate how GbE protects vascular endothelial cells against the proatherosclerotic stressor oxidized low-density lipoprotein (oxLDL) in vitro. Human umbilical vein endothelial cells (HUVECs) were incubated with GbE (12.5–100 μg/ml) for 2 h and then incubated with oxLDL (150 μg/ml) for an additional 24 h. Subsequently, reactive oxygen species (ROS) generation, antioxidant enzyme activities, adhesion to monocytes, cell morphology, viability, and several apoptotic indexes were assessed. Our data show that ROS generation is an upstream signal in oxLDL-treated HUVECs. Cu,Zn-SOD, but not Mn-SOD, was inactivated by oxLDL. In addition, oxLDL diminished expression of endothelial NO synthase and enhanced expression of adhesion molecules (ICAM, VCAM, and E-selectin) and the adherence of monocytic THP-1 cells to HUVECs. Furthermore, oxLDL increased intracellular calcium, disturbed the balance of Bcl-2 family proteins, destabilized mitochondrial membrane potential, and triggered subsequent cytochrome c release into the cytosol and activation of caspase-3. These detrimental effects were ameliorated dose dependently by GbE ( P < 0.05). Results from this study may provide insight into a possible molecular mechanism underlying GbE suppression of the oxLDL-mediated vascular endothelial dysfunction.
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Shi Q, Liu Z, Yang Y, Geng P, Zhu YY, Zhang Q, Bai F, Bai G. Identification of anti-asthmatic compounds in Pericarpium citri reticulatae and evaluation of their synergistic effects. Acta Pharmacol Sin 2009; 30:567-75. [PMID: 19363516 PMCID: PMC4002823 DOI: 10.1038/aps.2009.36] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2008] [Accepted: 03/12/2009] [Indexed: 11/08/2022] Open
Abstract
AIM To investigate the anti-asthmatic mechanisms of the traditional Chinese medicine Pericarpium citri reticulatae (PCR). METHODS The alkaloid section (AS) of PCR was extracted using an ion exchange resin, separated, and purified into different fractions by semi-preparative HPLC. These fractions were screened for beta2-adrenergic receptor (beta(2)AR) agonistic activity using rat beta(2)AR-transfected CHO-CRE-EGFP cells. AS and its isolated components were characterized by ultra-performance liquid chromatography/quadrupole time-of-flight MS (UPLC/Q-Tof MS) and were evaluated for their spasmolytic and antitussive activities both in vitro and in vivo in a guinea pig model. RESULTS We demonstrated that the AS component responsible for activating beta(2)AR signaling was synephrine. Both AS and synephrine showed significant spasmolytic effects on acetylcholine chloride (ACh)-induced contractions in isolated guinea pig trachea, and they protected against histamine-induced experimental asthma by prolonging the latent period. We further identified stachydrine as the antitussive component that could significantly reduce citric acid-induced coughing. The combination of these two bioactive compounds had a more potent spasmolytic activity in comparison with the single use of synephrine or stachydrine. CONCLUSION We conclude that synephrine and stachydrine are the key components of AS that mediate asthma relief due to their synergism when used in combination.
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Affiliation(s)
- Qian Shi
- College of Pharmaceutical Sciences, Nankai University, Tianjin 300071, China
| | - Ze Liu
- College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Yang Yang
- College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Peng Geng
- College for Basic Medical Science, Tianjin Medical University, Tianjin 300070, China
| | - Yuan-yuan Zhu
- College of Pharmaceutical Sciences, Nankai University, Tianjin 300071, China
| | - Qi Zhang
- College of Pharmaceutical Sciences, Nankai University, Tianjin 300071, China
| | - Fang Bai
- College of Pharmaceutical Sciences, Nankai University, Tianjin 300071, China
| | - Gang Bai
- College of Pharmaceutical Sciences, Nankai University, Tianjin 300071, China
- College of Life Sciences, Nankai University, Tianjin 300071, China
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Wang P, Xu TY, Guan YF, Su DF, Fan GR, Miao CY. Perivascular adipose tissue-derived visfatin is a vascular smooth muscle cell growth factor: role of nicotinamide mononucleotide. Cardiovasc Res 2008; 81:370-80. [PMID: 18952695 DOI: 10.1093/cvr/cvn288] [Citation(s) in RCA: 230] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
AIMS Perivascular adipose tissue (PVAT) inhibits vascular smooth muscle cell (VSMC) contraction and stimulates VSMC proliferation by releasing protein factors. The present study was to determine whether visfatin is involved in these paracrine actions of PVAT, and if so, to explore the underlying mechanisms. METHODS AND RESULTS Visfatin was preferentially expressed in Sprague-Dawley rat and monkey aortic PVAT, compared with subcutaneous and visceral adipose tissues. The PVAT-derived visfatin was found to be a VSMC growth factor rather than a VSMC relaxing factor, which was proved by visfatin-specific antibody/inhibitor and direct observation of recombinant visfatin. Exogenous visfatin stimulated VSMC proliferation in a dose- and time-dependent manner via extracellular signal-regulated kinase (ERK 1/2) and p38 signalling pathways. This proliferative effect was further confirmed by enhancement of DNA synthesis and upregulation of proliferative marker Ki-67. Visfatin had no anti-apoptotic effect on normal cultured VSMCs, and it exerted an anti-apoptotic effect only during cell apoptosis induced by H2O2, excluding a role of anti-apoptosis in the visfatin-induced VSMC proliferation. Insulin receptor knockdown did not show any action on the visfatin effect. However, visfatin acted as a nicotinamide phosphoribosyltransferase to biosynthesize nicotinamide mononucleotide (NMN), which mediated proliferative signalling pathways and cell proliferation similar to the visfatin effect. CONCLUSION Visfatin stimulates VSMC proliferation via NMN-mediated ERK1/2 and p38 signalling. The present study provides a molecular link of visfatin to the paracrine action of PVAT, demonstrates a novel function of visfatin in promoting VSMC proliferation, and reveals NMN as a novel signalling molecule that triggers the proliferative process.
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Affiliation(s)
- Pei Wang
- Department of Pharmacology, Second Military Medical University, 325 Guo He Road, Shanghai 200433, People's Republic of China
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