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Ye W, Wang J, Little PJ, Zou J, Zheng Z, Lu J, Yin Y, Liu H, Zhang D, Liu P, Xu S, Ye W, Liu Z. Anti-atherosclerotic effects and molecular targets of ginkgolide B from Ginkgo biloba. Acta Pharm Sin B 2024; 14:1-19. [PMID: 38239238 PMCID: PMC10792990 DOI: 10.1016/j.apsb.2023.09.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 09/03/2023] [Accepted: 09/13/2023] [Indexed: 01/22/2024] Open
Abstract
Bioactive compounds derived from herbal medicinal plants modulate various therapeutic targets and signaling pathways associated with cardiovascular diseases (CVDs), the world's primary cause of death. Ginkgo biloba , a well-known traditional Chinese medicine with notable cardiovascular actions, has been used as a cardio- and cerebrovascular therapeutic drug and nutraceutical in Asian countries for centuries. Preclinical studies have shown that ginkgolide B, a bioactive component in Ginkgo biloba , can ameliorate atherosclerosis in cultured vascular cells and disease models. Of clinical relevance, several clinical trials are ongoing or being completed to examine the efficacy and safety of ginkgolide B-related drug preparations in the prevention of cerebrovascular diseases, such as ischemia stroke. Here, we present a comprehensive review of the pharmacological activities, pharmacokinetic characteristics, and mechanisms of action of ginkgolide B in atherosclerosis prevention and therapy. We highlight new molecular targets of ginkgolide B, including nicotinamide adenine dinucleotide phosphate oxidases (NADPH oxidase), lectin-like oxidized LDL receptor-1 (LOX-1), sirtuin 1 (SIRT1), platelet-activating factor (PAF), proprotein convertase subtilisin/kexin type 9 (PCSK9) and others. Finally, we provide an overview and discussion of the therapeutic potential of ginkgolide B and highlight the future perspective of developing ginkgolide B as an effective therapeutic agent for treating atherosclerosis.
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Affiliation(s)
- Weile Ye
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, China
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou 510632, China
| | - Jiaojiao Wang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, China
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou 510632, China
| | - Peter J. Little
- Pharmacy Australia Centre of Excellence, School of Pharmacy, University of Queensland, Woolloongabba QLD 4102, Australia
- Sunshine Coast Health Institute and School of Health and Behavioural Sciences, University of the Sunshine Coast, Birtinya QLD 4575, Australia
| | - Jiami Zou
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, China
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou 510632, China
| | - Zhihua Zheng
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, China
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou 510632, China
| | - Jing Lu
- National-Local Joint Engineering Lab of Druggability and New Drugs Evaluation, Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, Sun Yat-sen University, Guangzhou 510006, China
| | - Yanjun Yin
- School of Pharmacy, Bengbu Medical College, Bengbu 233030, China
| | - Hao Liu
- School of Pharmacy, Bengbu Medical College, Bengbu 233030, China
| | - Dongmei Zhang
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, China
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou 510632, China
| | - Peiqing Liu
- National-Local Joint Engineering Lab of Druggability and New Drugs Evaluation, Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, Sun Yat-sen University, Guangzhou 510006, China
| | - Suowen Xu
- School of Pharmacy, Bengbu Medical College, Bengbu 233030, China
- Institute of Endocrine and Metabolic Diseases, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China
| | - Wencai Ye
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, China
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou 510632, China
| | - Zhiping Liu
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Jinan University, Guangzhou 510632, China
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, China
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou 510632, China
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Chen X, Zhang H, Hill MA, Zhang C, Park Y. Regulation of Coronary Endothelial Function by Interactions between TNF-α, LOX-1 and Adiponectin in Apolipoprotein E Knockout Mice. J Vasc Res 2016; 52:372-82. [PMID: 27050429 PMCID: PMC5091078 DOI: 10.1159/000443887] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 01/10/2016] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND/AIMS Although individual contributions of TNF-α, LOX-1 and adiponectin to the regulation of endothelial function were previously studied, their interactions in the regulation of coronary endothelial function remain unclear. The aim of this study is to investigate the interactions between TNF-α, LOX-1 and adiponectin in endothelial dysfunction in atherosclerosis. METHODS Vasodilator function was assessed in coronary arterioles isolated from wild-type, apolipoprotein (ApoE) knockout (KO) mice, ApoE KO null for TNF-α (ApoE KOTNF-/TNF-) and ApoE KO mice treated with neutralizing antibodies to either TNF-α and LOX-1, or recombinant adiponectin. Western blot analysis and immunofluorescence staining were used for mechanistic studies. RESULTS Acetylcholine (Ach) dilation was impaired in ApoE KO mice. KO of TNF-α, anti-TNF-α anti-LOX-1 or adiponectin restored impaired ACh vasodilation without affecting endothelium-derived hyperpolarizing factor-mediated vasodilation. Immunofluorescence staining demonstrated colocalization of TNF-α with vascular smooth muscle cells, and adiponectin with endothelial cells. ApoE KO mice showed increased protein expression of LOX-1, NF-x03BA;B, NADPH oxidase subunit NOX4 and nitrotyrosine (N-Tyr) levels in coronary arterioles. Treatment with anti-TNF-α, anti-LOX-1 and adiponectin suppressed protein expression of LOX-1, NOX4, NF-x03BA;B and N-Tyr levels. CONCLUSION Adiponectin, anti-TNF-α and anti-LOX-1 exert vasoprotective effects in atherosclerotic ApoE KO mice.
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MESH Headings
- Adiponectin/metabolism
- Adiponectin/pharmacology
- Animals
- Antibodies, Neutralizing/pharmacology
- Apolipoproteins E/deficiency
- Apolipoproteins E/genetics
- Arterioles/drug effects
- Arterioles/metabolism
- Arterioles/physiopathology
- Coronary Artery Disease/genetics
- Coronary Artery Disease/metabolism
- Coronary Artery Disease/physiopathology
- Coronary Artery Disease/prevention & control
- Coronary Vessels/drug effects
- Coronary Vessels/metabolism
- Coronary Vessels/physiopathology
- Disease Models, Animal
- Dose-Response Relationship, Drug
- Endothelium, Vascular/drug effects
- Endothelium, Vascular/metabolism
- Endothelium, Vascular/physiopathology
- Genetic Predisposition to Disease
- Male
- Mice, Inbred C57BL
- Mice, Knockout
- NADPH Oxidase 4
- NADPH Oxidases/metabolism
- NF-kappa B/metabolism
- Phenotype
- Scavenger Receptors, Class E/antagonists & inhibitors
- Scavenger Receptors, Class E/metabolism
- Signal Transduction
- Tumor Necrosis Factor-alpha/antagonists & inhibitors
- Tumor Necrosis Factor-alpha/deficiency
- Tumor Necrosis Factor-alpha/genetics
- Tumor Necrosis Factor-alpha/metabolism
- Tyrosine/analogs & derivatives
- Tyrosine/metabolism
- Vasodilation/drug effects
- Vasodilator Agents/pharmacology
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Affiliation(s)
- Xiuping Chen
- Dalton Cardiovascular Research Center, University of Missouri-Columbia, Columbia, MO 65211
- Department of Internal Medicine, University of Missouri-Columbia, Columbia, MO 65211
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China
| | - Hanrui Zhang
- Dalton Cardiovascular Research Center, University of Missouri-Columbia, Columbia, MO 65211
- Department of Internal Medicine, University of Missouri-Columbia, Columbia, MO 65211
- Department of Medical Pharmacology & Physiology, University of Missouri-Columbia, Columbia, MO 65211
- Cardiovascular Institute, University of Pennsylvania, Philadelphia, PA, 19104
| | - Michael A Hill
- Dalton Cardiovascular Research Center, University of Missouri-Columbia, Columbia, MO 65211
- Department of Medical Pharmacology & Physiology, University of Missouri-Columbia, Columbia, MO 65211
| | - Cuihua Zhang
- Dalton Cardiovascular Research Center, University of Missouri-Columbia, Columbia, MO 65211
- Department of Internal Medicine, University of Missouri-Columbia, Columbia, MO 65211
- Department of Medical Pharmacology & Physiology, University of Missouri-Columbia, Columbia, MO 65211
- Department of Nutritional Sciences, University of Missouri-Columbia, Columbia, MO 65211
| | - Yoonjung Park
- Dalton Cardiovascular Research Center, University of Missouri-Columbia, Columbia, MO 65211
- Department of Internal Medicine, University of Missouri-Columbia, Columbia, MO 65211
- Laboratory of Integrated Physiology, Department of Health & Human Performance, University of Houston, Houston, TX 77204
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Zhi Z, Pengfei Z, Xiaoyi T, Genshan M. Adiponectin ameliorates angiotensin II-induced vascular endothelial damage. Cell Stress Chaperones 2014; 19:705-13. [PMID: 24523033 PMCID: PMC4147077 DOI: 10.1007/s12192-014-0498-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Revised: 01/11/2014] [Accepted: 01/22/2014] [Indexed: 12/14/2022] Open
Abstract
Adiponectin is an adipocyte-specific adipocytokine that possesses anti-atherogenic and anti-diabetic properties. It has been shown to have a beneficial effect on the cardiovascular system, but it remains to be elucidated whether adiponectin has a therapeutic effect on vascular damage induced by the potential vasoactive substance angiotensin II (Ang II). In this study, the effects of adiponectin on Ang II-induced vascular endothelial damage were investigated. In cultured human umbilical vein endothelium cells, Ang II stimulation increased generation of ROS and 4-hydroxy-2-nonenal, both of which were clearly restored by administration of adiponectin. In addition, administration of adiponectin was found to increase cell viability and prevent apoptosis. Our results also demonstrate that the protective effects of adiponectin against Ang II-induced vascular endothelial damage are dependent on the binding of adiponectin to its cell surface receptor 1. Importantly, we found that adiponectin treatment modulates the apoptotic pathway by reducing the expression of LOX-1, up-regulating both cIAP-1 and the ratio of Bcl-2/Bax. Finally, our data displayed that the protective effects of adiponectin against Ang II cytotoxicity depend on AMPK activation mediated by the endosomal adaptor protein, adaptor protein with phosphotyrosine binding, pleckstrin homology domains, and leucine zipper motif.
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Affiliation(s)
- Zuo Zhi
- />Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Dingjiaqiao Road No. 87, Nanjing, 210009 Jiangsu Province China
| | - Zuo Pengfei
- />Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Dingjiaqiao Road No. 87, Nanjing, 210009 Jiangsu Province China
| | - Tian Xiaoyi
- />Department of Cardiology, Huai’an Municipal First People’s Hospital, Huai’an, 223400 Jiangsu Province China
| | - Ma Genshan
- />Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Dingjiaqiao Road No. 87, Nanjing, 210009 Jiangsu Province China
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Kodavanti UP, Thomas R, Ledbetter AD, Schladweiler MC, Shannahan JH, Wallenborn JG, Lund AK, Campen MJ, Butler EO, Gottipolu RR, Nyska A, Richards JE, Andrews D, Jaskot RH, McKee J, Kotha SR, Patel RB, Parinandi NL. Vascular and cardiac impairments in rats inhaling ozone and diesel exhaust particles. Environ Health Perspect 2011; 119:312-8. [PMID: 20980218 PMCID: PMC3059992 DOI: 10.1289/ehp.1002386] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2010] [Accepted: 10/27/2010] [Indexed: 05/24/2023]
Abstract
BACKGROUND Mechanisms of cardiovascular injuries from exposure to gas and particulate air pollutants are unknown. OBJECTIVE We sought to determine whether episodic exposure of rats to ozone or diesel exhaust particles (DEP) causes differential cardiovascular impairments that are exacerbated by ozone plus DEP. METHODS AND RESULTS Male Wistar Kyoto rats (10-12 weeks of age) were exposed to air, ozone (0.4 ppm), DEP (2.1 mg/m(3)), or ozone (0.38 ppm) + DEP (2.2 mg/m(3)) for 5 hr/day, 1 day/week for 16 weeks, or to air, ozone (0.51 or 1.0 ppm), or DEP (1.9 mg/m(3)) for 5 hr/day for 2 days. At the end of each exposure period, we examined pulmonary and cardiovascular biomarkers of injury. In the 16-week study, we observed mild pulmonary pathology in the ozone, DEP, and ozone + DEP exposure groups, a slight decrease in circulating lymphocytes in the ozone and DEP groups, and decreased platelets in the DEP group. After 16 weeks of exposure, mRNA biomarkers of oxidative stress (hemeoxygenase-1), thrombosis (tissue factor, plasminogen activator inhibitor-1, tissue plasminogen activator, and von Willebrand factor), vasoconstriction (endothelin-1, endothelin receptors A and B, endothelial NO synthase) and proteolysis [matrix metalloprotease (MMP)-2, MMP-3, and tissue inhibitor of matrix metalloprotease-2] were increased by DEP and/or ozone in the aorta, but not in the heart. Aortic LOX-1 (lectin-like oxidized low-density lipoprotein receptor-1) mRNA and protein increased after ozone exposure, and LOX-1 protein increased after exposure to ozone + DEP. RAGE (receptor for advanced glycation end products) mRNA increased in the ozone + DEP group. Exposure to ozone or DEP depleted cardiac mitochondrial phospholipid fatty acids (DEP > ozone). The combined effect of ozone and DEP exposure was less pronounced than exposure to either pollutant alone. Exposure to ozone or DEP for 2 days (acute) caused mild changes in the aorta. CONCLUSIONS In animals exposed to ozone or DEP alone for 16 weeks, we observed elevated biomarkers of vascular impairments in the aorta, with the loss of phospholipid fatty acids in myocardial mitochondria. We conclude that there is a possible role of oxidized lipids and protein through LOX-1 and/or RAGE signaling.
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Affiliation(s)
- Urmila P Kodavanti
- Environmental Public Health Division, National Health and Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27709, USA.
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Chang HC, Chen TG, Tai YT, Chen TL, Chiu WT, Chen RM. Resveratrol attenuates oxidized LDL-evoked Lox-1 signaling and consequently protects against apoptotic insults to cerebrovascular endothelial cells. J Cereb Blood Flow Metab 2011; 31:842-54. [PMID: 20940732 PMCID: PMC3063630 DOI: 10.1038/jcbfm.2010.180] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Cerebrovascular endothelial cells (CECs) are crucial components of the blood-brain barrier. Our previous study showed that oxidized low-density lipoprotein (oxLDL) induces apoptosis of CECs. This study was designed to further evaluate the effects of resveratrol on oxLDL-induced CEC insults and its possible molecular mechanisms. Resveratrol decreased the oxidation of LDL into oxLDL. Additionally, the oxLDL-caused oxidative stress and cell damage were attenuated by resveratrol. Exposure of CECs to oxLDL induced cell shrinkage, DNA fragmentation, and cell apoptosis, but resveratrol defended against such injuries. Application of Lox-1 small interference (si)RNA into CECs reduced the translation of this membrane receptor, and simultaneously increased resveratrol protection from oxLDL-induced cell apoptosis. By comparison, overexpression of Lox-1 attenuated resveratrol protection. Resveratrol inhibited oxLDL-induced Lox-1 mRNA and protein expressions. Both resveratrol and Lox-1 siRNA decreased oxLDL-enhanced translocation of proapoptotic Bcl-2-associated X protein (Bax) from the cytoplasm to mitochondria. Sequentially, oxLDL-induced alterations in the mitochondrial membrane potential, cytochrome c release, and activities of caspases-9, -3, and -6 were decreased by resveratrol. Pretreatment with Z-VEID-FMK (benzyloxycarbonyl-Leu-Glu-His-Asp-fluoromethyl ketone) synergistically promoted resveratrol's protection against DNA fragmentation and cell apoptosis. Therefore, this study shows that resveratrol can protect CECs from oxLDL-induced apoptotic insults via downregulating Lox-1-mediated activation of the Bax-mitochondria-cytochrome c-caspase protease pathway.
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Affiliation(s)
- Huai-Chia Chang
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan
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NISHIZUKA T, FUJITA Y, SATO Y, NAKANO A, KAKINO A, OHSHIMA S, KANDA T, YOSHIMOTO R, SAWAMURA T. Procyanidins are potent inhibitors of LOX-1: a new player in the French Paradox. Proc Jpn Acad Ser B Phys Biol Sci 2011; 87:104-13. [PMID: 21422743 PMCID: PMC3066543 DOI: 10.2183/pjab.87.104] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Lectin-like oxidized LDL receptor-1 (LOX-1) is an endothelial receptor for oxidized LDL (oxLDL) and plays multiple roles in the development of cardiovascular diseases. We screened more than 400 foodstuff extracts for identifying materials that inhibit oxLDL binding to LOX-1. Results showed that 52 extracts inhibited LOX-1 by more than 70% in cell-free assays. Subsequent cell-based assays revealed that a variety of foodstuffs known to be rich in procyanidins such as grape seed extracts and apple polyphenols, potently inhibited oxLDL uptake in Chinese hamster ovary (CHO) cells expressing LOX-1. Indeed, purified procyanidins significantly inhibited oxLDL binding to LOX-1 while other ingredients of apple polyphenols did not. Moreover, chronic administration of oligomeric procyanidins suppressed lipid accumulation in vascular wall in hypertensive rats fed with high fat diet. These results suggest that procyanidins are LOX-1 inhibitors and LOX-1 inhibition might be a possible underlying mechanism of the well-known vascular protective effects of red wine, the French Paradox.
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Affiliation(s)
- Taichi NISHIZUKA
- Department of Vascular Physiology, National Cerebral and Cardiovascular Center, Osaka, Japan
- Research Laboratories for Fundamental Technology of Food, Asahi Breweries, Ltd., Ibaraki, Japan
| | - Yoshiko FUJITA
- Department of Vascular Physiology, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Yuko SATO
- Department of Vascular Physiology, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Atushi NAKANO
- Department of Vascular Physiology, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Akemi KAKINO
- Department of Vascular Physiology, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Shunji OHSHIMA
- Research Laboratories for Fundamental Technology of Food, Asahi Breweries, Ltd., Ibaraki, Japan
| | - Tomomasa KANDA
- Research Laboratories for Fundamental Technology of Food, Asahi Breweries, Ltd., Ibaraki, Japan
| | - Ryo YOSHIMOTO
- Department of Vascular Physiology, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Tatsuya SAWAMURA
- Department of Vascular Physiology, National Cerebral and Cardiovascular Center, Osaka, Japan
- Correspondence should be addressed: T. Sawamura, MD, PhD, Department of Vascular Physiology, National Cerebral and Cardiovascular Center, Suita, Osaka 565-8565, Japan (e-mail: )
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Zhang P, Liu MC, Cheng L, Liang M, Ji HL, Fu J. Blockade of LOX-1 prevents endotoxin-induced acute lung inflammation and injury in mice. J Innate Immun 2008; 1:358-65. [PMID: 20375593 PMCID: PMC6009841 DOI: 10.1159/000161070] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2008] [Accepted: 08/05/2008] [Indexed: 01/09/2023] Open
Abstract
Lectin-like oxidized low-density lipoprotein (LDL) receptor-1 (LOX-1), a cell surface receptor expressed in endothelial cells, is known to mediate oxidized LDL-induced vascular inflammation and atherogenesis. Although the role of LOX-1 in vascular inflammation has been well established, its involvement in acute lung inflammation and injury remains unclear. In the present study, we examined the effects of a LOX-1-blocking antibody on lung inflammation in a mouse endotoxin lipopolysaccharide (LPS)-induced acute lung injury model. We demonstrated that intraperitoneal challenge with LPS induced a rapid and robust increase in LOX-1 expression in mouse lung. Pre-treatment of mice with anti-LOX-1-blocking antibody significantly inhibited LPS-induced lung inflammation as indicated by decreased neutrophil accumulation in the lung. Furthermore, anti-LOX-1 was capable of inhibiting LPS-induced inflammatory responses, including NF-kappaB activation, ICAM-1 expression and apoptotic signaling, in mouse lung. Collectively, these results indicate that LOX-1 may serve as a valuable therapeutic target in the prevention of acute lung inflammation and injury in sepsis.
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Affiliation(s)
- Ping Zhang
- Center for Biomedical Research, University of Texas Health Science Center at Tyler, Tyler, Tex
| | - Ming-Cheh Liu
- Department of Pharmacology, University of Toledo, Toledo, Ohio, USA
| | - Lili Cheng
- Center for Biomedical Research, University of Texas Health Science Center at Tyler, Tyler, Tex
| | - Mei Liang
- Center for Biomedical Research, University of Texas Health Science Center at Tyler, Tyler, Tex
| | - Hong-long Ji
- Center for Biomedical Research, University of Texas Health Science Center at Tyler, Tyler, Tex
| | - Jian Fu
- Center for Biomedical Research, University of Texas Health Science Center at Tyler, Tyler, Tex
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