1
|
Coluk Y, Peker EGG, Yildirmak S, Keskin A, Yildirim G. Exploring the protective role of green tea extract against cardiovascular alterations induced by chronic REM sleep deprivation via modulation of inflammation and oxidative stress. BMC Complement Med Ther 2024; 24:351. [PMID: 39363261 PMCID: PMC11448275 DOI: 10.1186/s12906-024-04643-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Accepted: 09/12/2024] [Indexed: 10/05/2024] Open
Abstract
BACKGROUND Chronic Rapid eye movement (REM) sleep deprivation has been associated with various cardiovascular alterations, including disruptions in antioxidant defense mechanisms, lipid metabolism, and inflammatory responses. This study investigates the therapeutic potential of green tea extract (GTE) in mitigating these adverse effects. METHODS A total of 24 male Wistar albino rats were used in this study and divided into the control group (n = 8), Chronic-REM Sleep Deprivation (CRSD) Group (n = 8) and Chronic-REM SD + Green Tea 200 (CRSD + GTE200) Group (n = 8). After 21 days, a comprehensive analysis of paraoxonase (PON1), arylesterase (ARE), malondialdehyde (MDA), glutathione (GSH), nitric oxide (NOx), proinflammatory cytokines, and lipid profiles in aortic tissue, heart tissue, and serum was conducted in a sleep-deprived rat model. RESULTS Chronic REM sleep deprivation led to a significant reduction in PON1 and ARE levels in aortic (p = 0.046, p = 0.035 respectively) and heart tissues (p = 0.020, p = 0.019 respectively), indicative of compromised antioxidant defenses. MDA levels increased, and NOx levels decreased, suggesting oxidative stress and impaired vascular function. Lipid profile alterations, including increased triglycerides and total cholesterol, were observed in serum. Elevated levels of inflammatory cytokines (IL-6 and TNF-alpha) further indicated an inflammatory response (p = 0.007, p = 0.018 respectively). GTE administration demonstrated a protective role, restoring antioxidant enzyme levels, suppressing lipid peroxidation, and improving NOx levels. CONCLUSION These findings suggest the therapeutic potential of GTE in alleviating the cardiovascular impairments of chronic REM sleep deprivation, emphasizing its candidacy for further clinical exploration as a natural intervention in sleep-related disorders and associated cardiovascular risks.
Collapse
Affiliation(s)
- Yonca Coluk
- Department of Otorhinolaryngology, Faculty of Medicine, Giresun University, Giresun, 28200, Turkey.
| | - Emine Gulceri Gulec Peker
- Department of Natural and Mathematical Sciences, Faculty of Engineering, Giresun University, Giresun, 28200, Turkey
| | - Sembol Yildirmak
- Department of Biochemistry, Faculty of Medicine, Mersin University, Mersin, 33010, Turkey
| | - Arif Keskin
- Department of Anatomy, Faculty of Medicine, Giresun University, Giresun, 28200, Turkey
| | - Guven Yildirim
- Private Practice, Otorhinolaryngology, İstanbul, 34360, Turkey
| |
Collapse
|
2
|
Guo J, Li K, Lin Y, Liu Y. Protective effects and molecular mechanisms of tea polyphenols on cardiovascular diseases. Front Nutr 2023; 10:1202378. [PMID: 37448666 PMCID: PMC10336229 DOI: 10.3389/fnut.2023.1202378] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 06/13/2023] [Indexed: 07/15/2023] Open
Abstract
Aging is the most important factor contributing to cardiovascular diseases (CVDs), and the incidence and severity of cardiovascular events tend to increase with age. Currently, CVD is the leading cause of death in the global population. In-depth analysis of the mechanisms and interventions of cardiovascular aging and related diseases is an important basis for achieving healthy aging. Tea polyphenols (TPs) are the general term for the polyhydroxy compounds contained in tea leaves, whose main components are catechins, flavonoids, flavonols, anthocyanins, phenolic acids, condensed phenolic acids and polymeric phenols. Among them, catechins are the main components of TPs. In this article, we provide a detailed review of the classification and composition of teas, as well as an overview of the causes of aging-related CVDs. Then, we focus on ten aspects of the effects of TPs, including anti-hypertension, lipid-lowering effects, anti-oxidation, anti-inflammation, anti-proliferation, anti-angiogenesis, anti-atherosclerosis, recovery of endothelial function, anti-thrombosis, myocardial protective effect, to improve CVDs and the detailed molecular mechanisms.
Collapse
Affiliation(s)
- Jun Guo
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Kai Li
- General Surgery Department, The First People’s Hospital of Tai’an City, Tai’an, China
| | - Yajun Lin
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Yinghua Liu
- Department of Nutrition, The First Medical Center, Chinese PLA General Hospital, Beijing, China
- National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China
| |
Collapse
|
3
|
Mohsenzadeh MS, Razavi BM, Imenshahidi M, Tabatabaee Yazdi SA, Mohajeri SA, Hosseinzadeh H. Potential role of green tea extract and epigallocatechin gallate in preventing bisphenol A-induced metabolic disorders in rats: Biochemical and molecular evidence. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 92:153754. [PMID: 34607205 DOI: 10.1016/j.phymed.2021.153754] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 08/26/2021] [Accepted: 09/12/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Bisphenol A (BPA) is an artificial chemical widely used in the production of polycarbonate plastics and epoxy resins. Accumulating evidence indicates that BPA exposure is associated with metabolic disorders. The beneficial effects of green tea and epigallocatechin gallate (EGCG), major catechin present in green tea, on alleviating BPA-induced metabolic disorders have been shown in various studies. PURPOSE Protective effects of green tea extract and EGCG on BPA-induced metabolic disorders and possible underlying mechanisms were investigated. METHODS Rats were randomly divided into control, green tea extract (50 and 100 mg/kg, IP), EGCG (20 and 40 mg/kg, IP), BPA (10 mg/kg, gavage), BPA plus green tea extract (25, 50, and 100 mg/kg, IP), BPA plus EGCG (10, 20, and 40 mg/kg, IP), and BPA plus vitamin E (200 IU/kg, IP). After two months, body weight, blood pressure, biochemical blood tests, hepatic malondialdehyde (MDA), and glutathione (GSH) were assessed. By enzyme-linked immunosorbent assay, serum levels of insulin, leptin, adiponectin, TNFα, and IL-6, and by western blotting, hepatic insulin signaling (IRS-1, PI3K, Akt) were measured. RESULTS BPA increased body weight, blood pressure, and MDA, decreased GSH, elevated serum levels of low-density lipoprotein cholesterol, total cholesterol, triglyceride, glucose, insulin, leptin, TNFα, IL-6, and liver enzymes including alanine aminotransferase and alkaline phosphatase, and lowered high-density lipoprotein cholesterol and adiponectin levels. In western blot, decreased phosphorylation of IRS-1, PI3K, and Akt was obtained. Administration of green tea extract, EGCG, or vitamin E with BPA reduced the detrimental effects of BPA. CONCLUSION These findings indicate that green tea extract and EGCG can be effective in preventing or reducing metabolic disorders induced by BPA linked to their antioxidant and anti-inflammatory activity, regulating the metabolism of lipids, and improving insulin signaling pathways.
Collapse
Affiliation(s)
- Mahdieh Sadat Mohsenzadeh
- 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, Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Mohsen Imenshahidi
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Seyed Ahmad Mohajeri
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran; Targeted Drug Delivery Research Center, Department of Pharmacodynamics and Toxicology, School of Pharmacy, 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.
| |
Collapse
|
4
|
Hwang JS, Hur J, Lee WJ, Won JP, Lee HG, Lim DS, Kim E, Seo HG. Catalase Mediates the Inhibitory Actions of PPARδ against Angiotensin II-Triggered Hypertrophy in H9c2 Cardiomyocytes. Antioxidants (Basel) 2021; 10:antiox10081223. [PMID: 34439471 PMCID: PMC8388952 DOI: 10.3390/antiox10081223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/23/2021] [Accepted: 07/26/2021] [Indexed: 01/05/2023] Open
Abstract
Hypertrophy of myocytes has been implicated in cardiac dysfunctions affecting wall stress and patterns of gene expression. However, molecular targets potentially preventing cardiac hypertrophy have not been fully elucidated. In the present study, we demonstrate that upregulation of catalase by peroxisome proliferator-activated receptor δ (PPARδ) is involved in the anti-hypertrophic activity of PPARδ in angiotensin II (Ang II)-treated H9c2 cardiomyocytes. Activation of PPARδ by a specific ligand GW501516 significantly inhibited Ang II-induced hypertrophy and the generation of reactive oxygen species (ROS) in H9c2 cardiomyocytes. These effects of GW501516 were almost completely abolished in cells stably expressing small hairpin (sh)RNA targeting PPARδ, indicating that PPARδ mediates these effects. Significant concentration and time-dependent increases in catalase at both mRNA and protein levels were observed in GW501516-treated H9c2 cardiomyocytes. In addition, GW501516-activated PPARδ significantly enhanced catalase promoter activity and protein expression, even in the presence of Ang II. GW501516-activated PPARδ also inhibited the expression of atrial natriuretic peptide (ANP) and B-type natriuretic peptide (BNP), which are both marker proteins for hypertrophy. The effects of GW501516 on the expression of ANP and BNP were reversed by 3-amino-1,2,4-triazole (3-AT), a catalase inhibitor. Inhibition or downregulation of catalase by 3-AT or small interfering (si)RNA, respectively, abrogated the effects of PPARδ on Ang II-induced hypertrophy and ROS generation, indicating that these effects of PPARδ are mediated through catalase induction. Furthermore, GW501516-activated PPARδ exerted catalase-dependent inhibitory effects on Ang II-induced hypertrophy by blocking p38 mitogen-activated protein kinase. Taken together, these results indicate that the anti-hypertrophic activity of PPARδ may be achieved, at least in part, by sequestering ROS through fine-tuning the expression of catalase in cardiomyocytes.
Collapse
Affiliation(s)
- Jung Seok Hwang
- College of Sang-Huh Life Sciences, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea; (J.S.H.); (J.H.); (W.J.L.); (J.P.W.); (H.G.L.); (E.K.)
| | - Jinwoo Hur
- College of Sang-Huh Life Sciences, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea; (J.S.H.); (J.H.); (W.J.L.); (J.P.W.); (H.G.L.); (E.K.)
| | - Won Jin Lee
- College of Sang-Huh Life Sciences, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea; (J.S.H.); (J.H.); (W.J.L.); (J.P.W.); (H.G.L.); (E.K.)
| | - Jun Pil Won
- College of Sang-Huh Life Sciences, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea; (J.S.H.); (J.H.); (W.J.L.); (J.P.W.); (H.G.L.); (E.K.)
| | - Hyuk Gyoon Lee
- College of Sang-Huh Life Sciences, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea; (J.S.H.); (J.H.); (W.J.L.); (J.P.W.); (H.G.L.); (E.K.)
| | - Dae-Seog Lim
- Department of Biotechnology, CHA University, 355 Pangyo-ro, Bundang-gu, Seongnam 13488, Korea;
| | - Eunsu Kim
- College of Sang-Huh Life Sciences, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea; (J.S.H.); (J.H.); (W.J.L.); (J.P.W.); (H.G.L.); (E.K.)
| | - Han Geuk Seo
- College of Sang-Huh Life Sciences, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea; (J.S.H.); (J.H.); (W.J.L.); (J.P.W.); (H.G.L.); (E.K.)
- Correspondence: ; Tel.: +82-2-450-0428; Fax: +82-2-455-1044
| |
Collapse
|
5
|
Ji B, Yuan K, Li J, Ku BJ, Leung PS, He W. Protocatechualdehyde restores endothelial dysfunction in streptozotocin-induced diabetic rats. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:711. [PMID: 33987409 PMCID: PMC8106075 DOI: 10.21037/atm-21-1431] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Background The present study was conducted with the aim of clarifying the effects of protocatechualdehyde (PCA) on the endothelial function in streptozotocin (STZ)-induced diabetic rats. Methods Sprague Dawley (SD) rats were intraperitoneally injected with STZ (single dose of 60 mg/kg). Diabetic model rats were given PCA (25 mg/kg/day) via gavage feeding for 6 weeks. Vascular function was studied; superoxide anion and nitrotyrosine levels were assessed; and nicotinamide adenine dinucleotide phosphate hydrogen (NADPH) oxidase as well as total superoxide dismutase (SOD) activity were detected. Protein expression of phosphorylated endothelial nitric oxide synthase (P-eNOS), total endothelial nitric oxide synthase (T-eNOS), p22phox, p47phox and Cu/Zn-SOD were measured by Western blot analysis. Results PCA treatment significantly ameliorated the impairment of acetylcholine- evoked endothelium-dependent relaxation, with no obvious effects observed on the blood glucose or body weight in the STZ-induced diabetic rats. Expression levels of aortic P-eNOS/T-eNOS and endothelial nitric oxide synthase (eNOS) activity were decreased in STZ-induced diabetic rats while they remained unchanged in PCA-treated rats. However, PCA treatment improved oxidative inactivation of nitric oxide (NO) and decreased the levels of superoxide anion and nitrotyrosine in the aorta of STZ-induced diabetic rats; these were achieved by reducing the level of nitrotyrosine and down-regulating p47phox and p22phox expression, as well as up-regulating Cu/Zn-SOD protein expression. Consistently, the effects observed were associated with a decrease in NADPH oxidase activity and an increase in total SOD activity. Conclusions Our results indicate that the administration of PCA may be protective against oxidative stress and may restore endothelial function by improving vascular NO oxidative inactivation in diabetic condition.
Collapse
Affiliation(s)
- Bin Ji
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Key Laboratory of Anesthesiology of Zhejiang Province, Wenzhou Medical University, Wenzhou, China
| | - Kaiming Yuan
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Key Laboratory of Anesthesiology of Zhejiang Province, Wenzhou Medical University, Wenzhou, China
| | - Jun Li
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Key Laboratory of Anesthesiology of Zhejiang Province, Wenzhou Medical University, Wenzhou, China
| | - Bon Jeong Ku
- Department of Internal Medicine, Chungnam National University College of Medicine, Daejeon, Republic of Korea
| | - Po Sing Leung
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Wei He
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Key Laboratory of Anesthesiology of Zhejiang Province, Wenzhou Medical University, Wenzhou, China
| |
Collapse
|
6
|
Al‐Shafei AIM, El‐Gendy OAA. Regular consumption of green tea improves pulse pressure and induces regression of left ventricular hypertrophy in hypertensive patients. Physiol Rep 2019; 7:e14030. [PMID: 30912296 PMCID: PMC6434072 DOI: 10.14814/phy2.14030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 02/14/2019] [Accepted: 02/17/2019] [Indexed: 12/21/2022] Open
Abstract
This study characterized the effects of regular green tea (GT) and hot water (HW) ingestion on systolic blood pressure (SBP), diastolic blood pressure (DBP), pulse pressure (PP), and left ventricular hypertrophy (LVH) in two equal, sex- and age-matched groups; Grp1 and Grp2 (n = 100 each; age 53 ± 4 years) of hypertensive patients. Grp1 had regular GT treatment, followed by HW ingestion, whereas Grp2 had HW ingestion followed by GT treatment for periods of 4 months each. Electrocardiographic (ECG) and echocardiographic assessments of LVH were made before and at the end of both periods. SBP was lowered significantly by 6.6%; DBP by 5.1%, and PP by 9.1% by the end of month 4 of GT treatment in Grp1. Upon GT cessation and HW ingestion, SBP, DBP, and PP returned to pretreatment levels over 4 months. In Grp2, SBP, DBP, and PP were reduced insignificantly by 1.5%, 1.0%, and 2.3% by the end of the 4th month of HW ingestion. Conversely, over 4 months of GT treatment, SBP, DBP, and PP were significantly lowered by 5.4%, 4.1%, and 7.7% from the baseline values, respectively. ECG and echocardiographic evidence of LVH was shown in 20% of Grp1 and 24% of Grp2 patients before intervention. This was significantly lowered to 8% and 10% in Grp1 and Grp2 by GT treatment. However, this increased to 16% following HW ingestion in Grp1. HW ingestion did mot induce regression of LVH in Grp2. Thus, regular GT ingestion has cardiovascular protective effects.
Collapse
Affiliation(s)
- Ahmad I. M. Al‐Shafei
- Istanbul Medipol UniversityIstanbulTurkey
- Bahrain UniversitySouthern GovernorateBahrain
- Qassim UniversityQassimSaudi Arabia
| | | |
Collapse
|
7
|
Schlüter KD, Kutsche HS, Hirschhäuser C, Schreckenberg R, Schulz R. Review on Chamber-Specific Differences in Right and Left Heart Reactive Oxygen Species Handling. Front Physiol 2018; 9:1799. [PMID: 30618811 PMCID: PMC6304434 DOI: 10.3389/fphys.2018.01799] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 11/29/2018] [Indexed: 01/21/2023] Open
Abstract
Reactive oxygen species (ROS) exert signaling character (redox signaling), or damaging character (oxidative stress) on cardiac tissue depending on their concentration and/or reactivity. The steady state of ROS concentration is determined by the interplay between its production (mitochondrial, cytosolic, and sarcolemmal enzymes) and ROS defense enzymes (mitochondria, cytosol). Recent studies suggest that ROS regulation is different in the left and right ventricle of the heart, specifically by a different activity of superoxide dismutase (SOD). Mitochondrial ROS defense seems to be lower in right ventricular tissue compared to left ventricular tissue. In this review we summarize the current evidence for heart chamber specific differences in ROS regulation that may play a major role in an observed inability of the right ventricle to compensate for cardiac stress such as pulmonary hypertension. Based on the current knowledge regimes to increase ROS defense in right ventricular tissue should be in the focus for the development of future therapies concerning right heart failure.
Collapse
Affiliation(s)
| | - Hanna Sarah Kutsche
- Department of Physiology, Justus-Liebig-University Giessen, Giessen, Germany
| | | | - Rolf Schreckenberg
- Department of Physiology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Rainer Schulz
- Department of Physiology, Justus-Liebig-University Giessen, Giessen, Germany
| |
Collapse
|
8
|
Lee SY, Lee CY, Ham O, Moon JY, Lee J, Seo HH, Shin S, Kim SW, Lee S, Lim S, Hwang KC. microRNA-133a attenuates cardiomyocyte hypertrophy by targeting PKCδ and Gq. Mol Cell Biochem 2017; 439:105-115. [PMID: 28795305 DOI: 10.1007/s11010-017-3140-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 08/02/2017] [Indexed: 02/06/2023]
Abstract
During the past decade, microRNAs have continuously been suggested as a promising therapeutic tool due to their beneficial effects, such as their multi-targets and multi-functions in pathologic conditions. As a pathologic phenotype is generally regulated by multiple signaling pathways, in this study we identified a microRNA regulating multiple target genes within cardiac hypertrophic signaling pathways. microRNA-133a is known to play a crucial role in cardiac hypertrophy. However, the role of microRNA-133a, which may regulate several signaling pathways in norepinephrine-induced cardiac hypertrophy via multi-targeting, has not been investigated. In the current study, we showed that microRNA-133a can protect cardiomyocyte hypertrophy against norepinephrine stimulation in neonatal rat ventricular cardiomyocytes via new targets, PKCδ and Gq, all of which are related to downstream signaling pathways of the α1-adrenergic receptor. Taken together, these results suggest the advantages of the therapeutic use of microRNAs as an effective potential drug regulating multiple signaling pathways under pathologic conditions.
Collapse
Affiliation(s)
- Se-Yeon Lee
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul, Republic of Korea
| | - Chang Youn Lee
- Department of Integrated Omics for Biomedical Sciences, Yonsei University, Seoul, Republic of Korea
| | - Onju Ham
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul, Republic of Korea
| | - Jae Yoon Moon
- Department of Cardiology, CHA Bundang Medical Center, CHA University, Seongnam, Gyeoggi-do, Republic of Korea
| | - Jiyun Lee
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul, Republic of Korea
| | - Hyang-Hee Seo
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul, Republic of Korea
| | - Sunhye Shin
- Department of Integrated Omics for Biomedical Sciences, Yonsei University, Seoul, Republic of Korea
| | - Sang Woo Kim
- Institute for Bio-Medical Convergence, College of Medicine, Catholic Kwandong University, Gangneung, Gangwon-do, Republic of Korea
- Catholic Kwandong University International St. Mary's Hospital, Incheon, Republic of Korea
| | - Seahyoung Lee
- Institute for Bio-Medical Convergence, College of Medicine, Catholic Kwandong University, Gangneung, Gangwon-do, Republic of Korea
- Catholic Kwandong University International St. Mary's Hospital, Incheon, Republic of Korea
| | - Soyeon Lim
- Institute for Bio-Medical Convergence, College of Medicine, Catholic Kwandong University, Gangneung, Gangwon-do, Republic of Korea.
- Catholic Kwandong University International St. Mary's Hospital, Incheon, Republic of Korea.
| | - Ki-Chul Hwang
- Institute for Bio-Medical Convergence, College of Medicine, Catholic Kwandong University, Gangneung, Gangwon-do, Republic of Korea.
- Catholic Kwandong University International St. Mary's Hospital, Incheon, Republic of Korea.
| |
Collapse
|
9
|
A. P, Varghese MV, S. A, P. SR, Mathew AK, Nair A, Nair RH, K.G. R. Polyphenol rich ethanolic extract from Boerhavia diffusa L. mitigates angiotensin II induced cardiac hypertrophy and fibrosis in rats. Biomed Pharmacother 2017; 87:427-436. [DOI: 10.1016/j.biopha.2016.12.114] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 12/07/2016] [Accepted: 12/26/2016] [Indexed: 10/20/2022] Open
|
10
|
Paredes F, Parra V, Torrealba N, Navarro-Marquez M, Gatica D, Bravo-Sagua R, Troncoso R, Pennanen C, Quiroga C, Chiong M, Caesar C, Taylor WR, Molgó J, San Martin A, Jaimovich E, Lavandero S. HERPUD1 protects against oxidative stress-induced apoptosis through downregulation of the inositol 1,4,5-trisphosphate receptor. Free Radic Biol Med 2016; 90:206-18. [PMID: 26616647 PMCID: PMC4710961 DOI: 10.1016/j.freeradbiomed.2015.11.024] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Revised: 11/17/2015] [Accepted: 11/20/2015] [Indexed: 11/27/2022]
Abstract
Homocysteine-inducible, endoplasmic reticulum (ER) stress-inducible, ubiquitin-like domain member 1 (HERPUD1), an ER resident protein, is upregulated in response to ER stress and Ca(2+) homeostasis deregulation. HERPUD1 exerts cytoprotective effects in various models, but its role during oxidative insult remains unknown. The aim of this study was to investigate whether HERPUD1 contributes to cytoprotection in response to redox stress and participates in mediating stress-dependent signaling pathways. Our data showed that HERPUD1 protein levels increased in HeLa cells treated for 30 min with H2O2 or angiotensin II and in aortic tissue isolated from mice treated with angiotensin II for 3 weeks. Cell death was higher in HERPUD1 knockdown (sh-HERPUD1) HeLa cells treated with H2O2 in comparison with control (sh-Luc) HeLa cells. This effect was abolished by the intracellular Ca(2+) chelating agent BAPTA-AM or the inositol 1,4,5-trisphosphate receptor (ITPR) antagonist xestospongin B, suggesting that the response to H2O2 was dependent on intracellular Ca(2+) stores and the ITPR. Ca(2+) kinetics showed that sh-HERPUD1 HeLa cells exhibited greater and more sustained cytosolic and mitochondrial Ca(2+) increases than sh-Luc HeLa cells. This higher sensitivity of sh-HERPUD1 HeLa cells to H2O2 was prevented with the mitochondrial permeability transition pore inhibitor cyclosporine A. We concluded that the HERPUD1-mediated cytoprotective effect against oxidative stress depends on the ITPR and Ca(2+) transfer from the ER to mitochondria.
Collapse
Affiliation(s)
- Felipe Paredes
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, 838049 Santiago, Chile
| | - Valentina Parra
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, 838049 Santiago, Chile
| | - Natalia Torrealba
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, 838049 Santiago, Chile
| | - Mario Navarro-Marquez
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, 838049 Santiago, Chile
| | - Damian Gatica
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, 838049 Santiago, Chile
| | - Roberto Bravo-Sagua
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, 838049 Santiago, Chile
| | - Rodrigo Troncoso
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, 838049 Santiago, Chile; Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
| | - Christian Pennanen
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, 838049 Santiago, Chile
| | - Clara Quiroga
- ACCDiS, Cardiovascular Diseases Division, Faculty of Medicine, Pontifical Catholic University of Chile, Santiago, Chile
| | - Mario Chiong
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, 838049 Santiago, Chile
| | - Christa Caesar
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology/Emory University, Atlanta, GA, USA
| | - W Robert Taylor
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology/Emory University, Atlanta, GA, USA; Department of Medicine, Division of Cardiology, Emory University School of Medicine, Atlanta, GA, USA
| | - Jordi Molgó
- Institut des Neurosciences Paris-Saclay, UMR 9197, 91190 Gif sur Yvette, France
| | - Alejandra San Martin
- Department of Medicine, Division of Cardiology, Emory University School of Medicine, Atlanta, GA, USA
| | - Enrique Jaimovich
- Centro de Estudios Moleculares de la Célula, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Sergio Lavandero
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, 838049 Santiago, Chile; Centro de Estudios Moleculares de la Célula, Facultad de Medicina, Universidad de Chile, Santiago, Chile; Department of Internal Medicine (Cardiology Division), University of Texas Southwestern Medical Center, Dallas, TX, USA.
| |
Collapse
|
11
|
Gopi V, Subramanian V, Manivasagam S, Vellaichamy E. Angiotensin II down-regulates natriuretic peptide receptor-A expression and guanylyl cyclase activity in H9c2 (2-1) cardiac myoblast cells: Role of ROS and NF-κB. Mol Cell Biochem 2015. [DOI: 10.1007/s11010-015-2513-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
12
|
Chakraborty M, Kamath JV, Bhattacharjee A. Potential interaction of green tea extract with hydrochlorothiazide against doxorubicin-induced myocardial damage. J Ayurveda Integr Med 2015; 6:187-93. [PMID: 26604554 PMCID: PMC4630693 DOI: 10.4103/0975-9476.146555] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Revised: 08/30/2014] [Accepted: 11/10/2014] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Treatment of ischemic hypertensive patients with hydrochlorothiazide can precipitate cardiac arrhythmias. Green tea, by virtue of its antioxidant potential, is responsible for cardio-protective activity. OBJECTIVE The present study was under taken to evaluate the pharmacodynamic interaction of green tea extract with hydrochlorothiazide (HCTZ) against doxorubicin (DOX)-induced myocardial toxicity. MATERIALS AND METHODS Rats were treated with high (500 mg/kg, p.o.) and low (100 mg/kg, p.o.) dose of green tea extract in alone and interactive groups for 28 days. Standard, high and low dose of interactive groups received hydrochlorothiazide (10 mg/kg, p.o.) for the last 7 days. Apart from normal controls, all other groups were subjected to DOX (3 mg/kg, i.p.) toxicity on Days 1, 7, 14, 21 and 28, and the effect of different treatments was evaluated by changes in electrocardiographic parameters, serum biomarkers and tissue antioxidant levels. Apart from that, lipid profile and histological studies were also carried out. RESULTS Compared with the DOX control group, both high and low dose of green tea exhibited a significant decrease in serum biomarkers and increase in tissue antioxidant levels. Green tea treatment was also responsible for significant improvement in ECG parameter, lipid profile and histological score. Incorporation of high and low dose of green tea with HCTZ exhibited significant protection compared with the HCTZ alone treated group. CONCLUSION The present findings clearly suggest that the green tea extract dose-dependently reduces DOX-induced myocardial toxicity. Green tea when combined with HCTZ can reduce the associated side-effects and exhibits myocardial protection.
Collapse
Affiliation(s)
| | - Jagadish V. Kamath
- Department of Pharmacology, Shree Devi College of Pharmacy, Mangalore, Karnataka, India
| | - Ananya Bhattacharjee
- Department of Pharmacology, Shree Devi College of Pharmacy, Mangalore, Karnataka, India
| |
Collapse
|
13
|
Al-Rasheed NM, Al-Oteibi MM, Al-Manee RZ, Al-Shareef SA, Al-Rasheed NM, Hasan IH, Mohamad RA, Mahmoud AM. Simvastatin prevents isoproterenol-induced cardiac hypertrophy through modulation of the JAK/STAT pathway. DRUG DESIGN DEVELOPMENT AND THERAPY 2015; 9:3217-29. [PMID: 26150695 PMCID: PMC4484667 DOI: 10.2147/dddt.s86431] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Simvastatin (SIM) is a lipid-soluble inhibitor of hydroxy-3-methylglutaryl coenzyme A reductase with multiple reported therapeutic benefits. The present study was designed to investigate the effect of pretreatment with SIM on isoproterenol (ISO)-induced cardiac hypertrophy in rats. Twenty-four male albino Wistar rats weighing 180–200 g were divided into four groups. Groups I and III received normal saline while groups II and IV received SIM (10 mg/kg body weight) for 30 days per gavage. In the last 7 days, rats of groups III and IV were administered ISO (5 mg/kg) intraperitoneally to induce cardiac hypertrophy. Administration of ISO induced an increase in heart-to-body weight (HW/BW) ratio, an increase in serum interleukin-6, and elevated systolic and diastolic blood pressure. Serum levels of lipids, cardiovascular risk indices, and cardiac troponin I and creatine phosphokinase-MB showed significant increase in ISO-induced hypertrophic rats. Histopathological examination of heart tissue revealed focal areas of subendocardium degeneration, mononuclear cellular infiltrations, fibrous tissue deposition, and increased thickness of the myocardium of left ventricle. In addition, ISO-administered rats exhibited significant upregulation of cardiac Janus kinase, phosphorylated signal transducer and activator of transcription, and nuclear factor-kappa B. Pretreatment with SIM significantly prevented ISO-induced cardiac hypertrophy, alleviated the altered biochemical parameters, and improved the heart architecture. In conclusion, our study provides evidence that SIM prevented the development of cardiac hypertrophy via modulation of the Janus kinase/signal transducer and activator of transcription-signaling pathway in the heart of ISO-administered animals.
Collapse
Affiliation(s)
- Nouf M Al-Rasheed
- Department of Pharmacology, Faculty of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Maha M Al-Oteibi
- Department of Pharmacology, Faculty of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Reem Z Al-Manee
- Department of Pharmacology, Faculty of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Sarah A Al-Shareef
- Department of Pharmacology, Faculty of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Nawal M Al-Rasheed
- Department of Pharmacology, Faculty of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Iman H Hasan
- Department of Pharmacology, Faculty of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Raeesa A Mohamad
- Department of Anatomy, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Ayman M Mahmoud
- Physiology Division, Department of Zoology, Faculty of Science, Beni-Suef University, Egypt
| |
Collapse
|
14
|
Li M, Tang YQ, Du RH, Shi FH, Hussein HK, Dai DZ, Dai Y. CPUY11018, an azimilide derivative, ameliorates isoproterenol-induced cardiac insufficiency through relieving dysfunctional mitochondria and endoplasmic reticulum. J Pharm Pharmacol 2015; 67:1029-41. [DOI: 10.1111/jphp.12401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2014] [Accepted: 01/18/2015] [Indexed: 12/11/2022]
Abstract
Abstract
Objectives
Deterioration of cardiac performance under stress may be partly mediated by dysfunctional mitochondria and endoplasmic reticulum (ER) that is likely related to an activation of NADPH oxidase (NOX) and an increase in pro-inflammatory factors. We investigated if a new compound CPUY11018 (CPUY) derived from Azimilide could ameliorate the stress impaired cardiac performance.
Methods
Forty-eight male Sprague Dawley rats were randomly divided into six groups and were injected with isoproterenol (ISO, 1 ml/kg, s.c.) for 10 days. Cardiac myocytes and fibroblasts from neonate rats were incubated with ISO. CPUY was employed and compared with apocynin (APO) – an inhibitor of NOX.
Key findings
In ISO-treated group, the compromised haemodynamics and cardiac remodelling were significant with dysfunctional mitochondria indicated by decreased MnSOD and mitochondrial membrane potential, and an enhanced reactive oxygen species genesis. Downregulation of FKBP12.6, CASQ2 and SERCA2a was also remarkable in vivo and in vitro implying an abnormal ER. Upregulated Nox4, p22phox and p47phox were significant, associated with upregulation of Src, IκBβ and NFκB, and downregulation of pAMPK/AMPK and Cx40 in vivo and in vitro. These abnormalities were relieved by CPUY and APO.
Conclusions
CPUY is potential in managing cardiac insufficiency through normalizing mitochondria and ER in the affected heart.
Collapse
Affiliation(s)
- Meng Li
- Research Division of Pharmacology, China Pharmaceutical University, Nanjing, China
| | - Yi-Qun Tang
- Research Division of Pharmacology, China Pharmaceutical University, Nanjing, China
| | - Rong-Hui Du
- Department of Pharmacology, The Medical School, University of Nanjing, Nanjing, China
| | - Fang-Hong Shi
- Research Division of Pharmacology, China Pharmaceutical University, Nanjing, China
| | - Humed Khan Hussein
- Research Division of Pharmacology, China Pharmaceutical University, Nanjing, China
- Pharmacology Department, Faculty of Pharmacy, University of Aden, Aden, Yemen
| | - De-Zai Dai
- Research Division of Pharmacology, China Pharmaceutical University, Nanjing, China
| | - Yin Dai
- Research Division of Pharmacology, China Pharmaceutical University, Nanjing, China
| |
Collapse
|
15
|
Pharmacokinetic interactions of herbs with cytochrome p450 and p-glycoprotein. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:736431. [PMID: 25632290 PMCID: PMC4302358 DOI: 10.1155/2015/736431] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 12/20/2014] [Accepted: 12/20/2014] [Indexed: 11/17/2022]
Abstract
The concurrent use of drugs and herbal products is becoming increasingly prevalent over the last decade. Several herbal products have been known to modulate cytochrome P450 (CYP) enzymes and P-glycoprotein (P-gp) which are recognized as representative drug metabolizing enzymes and drug transporter, respectively. Thus, a summary of knowledge on the modulation of CYP and P-gp by commonly used herbs can provide robust fundamentals for optimizing CYP and/or P-gp substrate drug-based therapy. Herein, we review ten popular medicinal and/or dietary herbs as perpetrators of CYP- and P-gp-mediated pharmacokinetic herb-drug interactions. The main focus is placed on previous works on the ability of herbal extracts and their phytochemicals to modulate the expression and function of CYP and P-gp in several in vitro and in vivo animal and human systems.
Collapse
|
16
|
Zhang Q, Tan Y, Zhang N, Yao F. Polydatin prevents angiotensin II-induced cardiac hypertrophy and myocardial superoxide generation. Exp Biol Med (Maywood) 2014; 240:1352-61. [PMID: 25488910 DOI: 10.1177/1535370214561958] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Accepted: 10/11/2014] [Indexed: 12/26/2022] Open
Abstract
Our studies and others recently demonstrate that polydatin, a resveratrol glucoside, has antioxidative and cardioprotective effects. This study aims to investigate the direct effects of polydatin on Ang II-induced cardiac hypertrophy to explore the potential role of polydatin in cardioprotection. Our results showed that in primary cultured cardiomyocytes, polydatin blocked Ang II-induced cardiac hypertrophy in a dose-dependent manner, which were associated with reduction in the cell surface area and [(3)H]leucine incorporation, as well as attenuation of the mRNA expressions of atrial natriuretic factor and β-myosin heavy chain. Furthermore, polydatin prevented rat cardiac hypertrophy induced by Ang II infusion, as assessed by heart weight-to-body weight ratio, cross-sectional area of cardiomyocyte, and gene expression of hypertrophic markers. Further investigation demonstrated that polydatin attenuated the Ang II-induced increase in the reactive oxygen species levels and NADPH oxidase activity in vivo and in vitro. Polydatin also blocked the Ang II-stimulated increases of Nox4 and Nox2 expression in cultured cardiomyocytes and the hearts of Ang II-infused rats. Our results indicate that polydatin has the potential to protect against Ang II-mediated cardiac hypertrophy through suppression of NADPH oxidase activity and superoxide production. These observations may shed new light on the understanding of the cardioprotective effect of polydatin.
Collapse
Affiliation(s)
- Qi Zhang
- Medical Research Center, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi 712046, P.R. China
| | - Yingying Tan
- Medical Research Center, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi 712046, P.R. China
| | - Nan Zhang
- Medical Research Center, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi 712046, P.R. China
| | - Fanrong Yao
- Department of Pharmacology & Toxicology, Brody School of Medicine, East Carolina University, Greenville, NC 27834, USA
| |
Collapse
|
17
|
Chakraborty M, Kamath JV, Bhattacharjee A. Pharmacodynamic Interaction of Green Tea Extract with Hydrochlorothiazide against Cyclophosphamide-Induced Myocardial Damage. Toxicol Int 2014; 21:196-202. [PMID: 25253931 PMCID: PMC4170563 DOI: 10.4103/0971-6580.139810] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Objective: Treatment of ischemic hypertensive patients with hydrochlorothiazide can precipitate cardiac arrhythmias. Green tea by virtue of its antioxidant potential is responsible for cardio-protective activity. The present study was undertaken to evaluate the pharmacodynamic interaction of green tea extract with hydrochlorothiazide against cyclophosphamide-induced myocardial toxicity. Materials and Methods: Rats were treated with high (500 mg/kg, p.o.) and low (100 mg/kg, p.o.) dose of green tea extract in alone and interactive groups for 10 days. Standard, high, and low dose of interactive groups received hydrochlorothiazide (10 mg/kg, p.o.) for last 7 days. Apart from normal control, all other groups were subjected to cyclophosphamide (200 mg/kg, i.p.) toxicity on day first and the effects of different treatments were evaluated by changes in electrocardiographic parameters, serum biomarkers, and tissue antioxidant levels. Apart from that, lipid profile and histological studies were also carried out. Results: Compared to cyclophosphamide control group, both high and low dose of green tea exhibited significant decrease in serum biomarkers and increase in tissue antioxidant levels. Green tea treatment was also responsible for significant improvement in echocardiography (ECG) parameter, lipid profile, and histological score. Incorporation of high and low dose of green tea with hydrochlorothiazide-exhibited significant protection compared to hydrochlorothiazide-alone-treated group. Conclusion: The present findings clearly suggested that green tea extract dose dependently reduces cyclophosphamide-induced myocardial toxicity. Green tea when combined with hydrochlorothiazide can reduce the associated side effects and exhibits myocardial protection.
Collapse
Affiliation(s)
- Manodeep Chakraborty
- Research Scholar, Department of Pharmacology, Bhagwant University, Ajmer, Rajasthan, India
| | | | - Ananya Bhattacharjee
- Department of Pharmacology, Shree Devi College of Pharmacy, Mangalore, Karnataka, India
| |
Collapse
|
18
|
Chakraborty M, Kamath JV. Pharmacodynamic interaction of green tea extract with hydrochlorothiazide against ischemia-reperfusion injury-induced myocardial infarction. J Adv Pharm Technol Res 2014; 5:134-9. [PMID: 25126535 PMCID: PMC4131404 DOI: 10.4103/2231-4040.137428] [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] [Indexed: 01/30/2023] Open
Abstract
Globally, the rate of development of myocardial diseases and hypertension is very common, which is responsible for incremental morbidity and mortality statistics. Treatment of ischemic hypertensive patients with diuretics such as hydrochlorothiazide (HCTZ) can precipitate myocardial infarction due to hypokalemia. This study was undertaken to evaluate the pharmacodynamic interaction of green tea extract (GTE) with HCTZ against ischemia-reperfusion induced myocardial toxicity. Wistar albino rats of either sex were taken and pretreated with high (500 mg/kg, p.o.) and low (100 mg/kg, p.o.) dose of GTE for 30 days. Standard, high and low dose of interactive groups received HCTZ (10 mg/kg, p.o.) for last 7 days. Ischemia-reperfusion injury was induced by modified Lagendorff apparatus, and the effect of different treatments was evaluated by percentage recovery in terms of heart rate and developed tension, serum biomarkers, and heart tissue antioxidant levels. Prophylactic treatment groups, such as high and low dose of GTE and their interactive groups with HCTZ, exhibited significant percentage recovery in terms of heart rate and developed tension. Apart from that, significant increase in superoxide dismutase and catalase, decrease in thiobarbituric acid reactive species in heart tissue, as well as significant decrease in serum lactate dehydrogenase, creatinine phosphokinase-MB and N-acetylcysteine levels have also been documented. The present findings clearly suggest that GTE dose-dependently reduces myocardial toxicity due to ischemia, and combination with HCTZ can reduce the associated side-effects and exhibits myocardial protection.
Collapse
|
19
|
Onakpoya I, Spencer E, Heneghan C, Thompson M. The effect of green tea on blood pressure and lipid profile: a systematic review and meta-analysis of randomized clinical trials. Nutr Metab Cardiovasc Dis 2014; 24:823-836. [PMID: 24675010 DOI: 10.1016/j.numecd.2014.01.016] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 01/21/2014] [Accepted: 01/22/2014] [Indexed: 01/16/2023]
Abstract
INTRODUCTION Many different dietary supplements are currently marketed for the management of hypertension, but the evidence for effectiveness is mixed. The aim of this systematic review was to evaluate the evidence for or against the effectiveness of green tea (Camellia sinensis) on blood pressure and lipid parameters. METHODS AND RESULTS Electronic searches were conducted in Medline, Embase, Amed, Cinahl and the Cochrane Library to identify relevant human randomized clinical trials (RCTs). Hand searches of bibliographies were also conducted. The reporting quality of included studies was assessed using a checklist adapted from the CONSORT Statement. Two reviewers independently determined eligibility, assessed the reporting quality of the included studies, and extracted the data. As many as 474 citations were identified and 20 RCTs comprising 1536 participants were included. There were variations in the designs of the RCTs. A meta-analysis revealed a significant reduction in systolic blood pressure favouring green tea (MD: -1.94 mmHg; 95% CI: -2.95 to -0.93; I(2) = 8%; p = 0.0002). Similar results were also observed for total cholesterol (MD: -0.13 mmol/l; 95% CI: -0.2 to -0.07; I(2) = 8%; p < 0.0001) and LDL cholesterol (MD: -0.19 mmol/l; 95% CI: -0.3 to -0.09; I(2) = 70%; p = 0.0004). Adverse events included rash, elevated blood pressure, and abdominal discomfort. CONCLUSION Green tea intake results in significant reductions in systolic blood pressure, total cholesterol, and LDL cholesterol. The effect size on systolic blood pressure is small, but the effects on total and LDL cholesterol appear moderate. Longer-term independent clinical trials evaluating the effects of green tea are warranted.
Collapse
Affiliation(s)
- I Onakpoya
- Department of Primary Care Health Sciences, University of Oxford, United Kingdom.
| | - E Spencer
- Department of Primary Care Health Sciences, University of Oxford, United Kingdom
| | - C Heneghan
- Department of Primary Care Health Sciences, University of Oxford, United Kingdom
| | - M Thompson
- Department of Primary Care Health Sciences, University of Oxford, United Kingdom; Department of Family Medicine, University of Washington, Seattle, USA
| |
Collapse
|
20
|
Shahar S, Hillman P, Lubart R, Ickowicz D, Breitbart H. Activation of sperm EGFR by light irradiation is mediated by reactive oxygen species. Photochem Photobiol 2014; 90:1077-83. [PMID: 24724551 DOI: 10.1111/php.12281] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Accepted: 04/07/2014] [Indexed: 12/21/2022]
Abstract
To acquire fertilization competence, spermatozoa must undergo several biochemical and motility changes in the female reproductive tract, collectively called capacitation. Actin polymerization and the development of hyperactivated motility (HAM) are part of the capacitation process. In a recent study, we showed that irradiation of human sperm with visible light stimulates HAM through a mechanism involving reactive-oxygen-species (ROS), Ca(2+) influx, protein kinases A (PKA), and sarcoma protein kinase (Src). Here, we showed that this effect of light on HAM is mediated by ROS-dependent activation of the epidermal growth factor receptor (EGFR). Interestingly, ROS-mediated HAM even when the EGFR was activated by EGF, the physiological ligand of EGFR. Light irradiation stimulated ROS-dependent actin polymerization, and this effect was abrogated by PBP10, a peptide which activates the actin-severing protein, gelsolin, and causes actin-depolymerization in human sperm. Light-stimulated tyrosine phosphorylation of Src-dependent gelsolin, resulting in enhanced HAM. Thus, light irradiation stimulates HAM through a mechanism involving Src-mediated actin polymerization. Light-stimulated HAM and in vitro-fertilization (IVF) rate in mouse sperm, and these effects were mediated by ROS and EGFR. In conclusion, we show here that irradiation of sperm with visible light, enhances their fertilization capacity via a mechanism requiring ROS, EGFR and HAM.
Collapse
Affiliation(s)
- Shiran Shahar
- The Mina & Everard Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel
| | | | | | | | | |
Collapse
|
21
|
Myocardial Rac1 exhibits partial involvement in thyroxin-induced cardiomyocyte hypertrophy and its inhibition is not sufficient to improve cardiac dysfunction or contractile abnormalities in mouse papillary muscles. J Cardiovasc Pharmacol 2013; 61:536-44. [PMID: 23429587 DOI: 10.1097/fjc.0b013e31828d4b9d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
: Development of cardiac hypertrophy after thyroxin (T4) treatment is well recognized. Recently, we observed that T4-induced cardiac hypertrophy is associated with increased cardiac Rac1 expression and activity. Whether this Rac1 increase has a role in inducing this cardiac phenotype is, however, still unknown. Here, we showed that T4 treatment (500 µg/kg/d) for 2 weeks resulted in increased myocardial Rac1 activity with subsequent hypertension, cardiac hypertrophy, and left ventricular systolic dysfunction in vivo. Isolated right ventricular papillary muscles of T4-treated mice maintained their peak isometric active developed tension but exhibited significant decreases in their corresponding time to peak and in relaxation times. Positive inotropic responses to increasing pacing rate and β-adrenergic stimulation were also depressed in these muscles. Pravastatin (10 mg/kg/d), a Rac1 inhibitor, significantly decreased myocardial Rac1 activity, hypertension, and cardiomyocyte size in T4-treated mice but could not attenuate gross heart weight or functional cardiac changes in these mice. Our data showed that T4 could activate different signaling pathways with distinct cardiovascular outcomes. We also provide the first mechanistic evidence for the partial involvement of Rac1 activation in T4-induced cardiomyocyte hypertrophy and reveal a putative role for Rac1 in the development of T4-induced hypertension.
Collapse
|
22
|
Kochi T, Shimizu M, Terakura D, Baba A, Ohno T, Kubota M, Shirakami Y, Tsurumi H, Tanaka T, Moriwaki H. Non-alcoholic steatohepatitis and preneoplastic lesions develop in the liver of obese and hypertensive rats: suppressing effects of EGCG on the development of liver lesions. Cancer Lett 2013; 342:60-9. [PMID: 23981577 DOI: 10.1016/j.canlet.2013.08.031] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Revised: 08/08/2013] [Accepted: 08/19/2013] [Indexed: 12/15/2022]
Abstract
Non-alcoholic steatohepatitis (NASH), which involves hepatic inflammation and fibrosis, is associated with liver carcinogenesis. The activation of the renin-angiotensin system (RAS), which plays a key role in blood pressure regulation, promotes hepatic fibrogenesis. In this study, we investigated the effects of (-)-epigallocatechin-3-gallate (EGCG), a major component of green tea catechins, on the development of glutathione S-transferase placental form (GST-P)-positive (GST-P(+)) foci, a hepatic preneoplastic lesion, in SHRSP.Z-Lepr(fa)/IzmDmcr (SHRSP-ZF) obese and hypertensive rats. Male 7-week-old SHRSP-ZF rats and control non-obese and normotensive WKY rats were fed a high fat diet and received intraperitoneal injections of carbon tetrachloride twice a week for 8weeks. The rats were also provided tap water containing 0.1% EGCG during the experiment. SHRSP-ZF rats presented with obesity, insulin resistance, dyslipidemia, an imbalance of adipokines in the serum, and hepatic steatosis. The development of GST-P(+) foci and liver fibrosis was markedly accelerated in SHRSP-ZF rats compared to that in control rats. Additionally, in SHRSP-ZF rats, RAS was activated and inflammation and oxidative stress were induced. Administration of EGCG, however, inhibited the development of hepatic premalignant lesions by improving liver fibrosis, inhibiting RAS activation, and attenuating inflammation and oxidative stress in SHRSP-ZF rats. In conclusion, obese and hypertensive SHRSP-ZF rats treated with a high fat diet and carbon tetrachloride displayed the histopathological and pathophysiological characteristics of NASH and developed GST-P(+) foci hepatic premalignant lesions, suggesting the model might be useful for the evaluation of NASH-related liver tumorigenesis. EGCG might also be able to prevent NASH-related liver fibrosis and tumorigenesis.
Collapse
Affiliation(s)
- Takahiro Kochi
- Department of Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Yang CS, Hong J. Prevention of Chronic Diseases by Tea: Possible Mechanisms and Human Relevance. Annu Rev Nutr 2013; 33:161-81. [DOI: 10.1146/annurev-nutr-071811-150717] [Citation(s) in RCA: 137] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Chung S. Yang
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854-8020;
| | - Jungil Hong
- Department of Food Science and Technology, College of Natural Science, Seoul Women's University, Seoul, 139-774 Korea;
| |
Collapse
|
24
|
Yan SH, Zhao NW, Zhu XX, Wang Q, Wang HD, Fu R, Sun Y, Li QY. Benazepril inhibited the NF-κB and TGF-β networking on LV hypertrophy in rats. Immunol Lett 2013; 152:126-34. [PMID: 23707880 DOI: 10.1016/j.imlet.2013.05.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Revised: 04/26/2013] [Accepted: 05/08/2013] [Indexed: 11/28/2022]
Abstract
PURPOSE Benazepril, an angiotensin-converting enzyme (ACE) inhibitor, has been used to treat hypertension, congestive heart failure, and chronic renal failure. However, its biological activity and mechanism of action in inflammation are not fully identified. The present study was designed to determine the in vivo anti-inflammatory effects of benazepril on LV hypertrophy in rats. METHODS LV hypertrophy was produced in rats by abdominal aortic coarctation. They were then divided into the following groups: sham operation; LV hypertrophy; LV hypertrophy+benazepril (1mg/kg in a gavage, once a day for 4 weeks). Both morphological assays (hemodynamic and hemorheological measurement; LV hypertrophy assessment), and molecular assays (protein levels of Collagen type I/III, TNF-α and VCAM-1; TGF-β gene expression; NF-κB or Smad activation; intracellular ROS production) were performed. RESULTS The following effects were observed in rats treated with benazepril: (1) marked improvements in hemodynamic and hemorheological parameters; (2) significant reductions in LV hypertrophy, dilatation and fibrosis; (3) significantly attenuated protein levels of Collagen type I/III, TGF-β, TNF-α and VCAM-1, NF-κB or Smad activation, as well as intracellular ROS production. CONCLUSIONS These results suggest that the anti-inflammatory properties of benazepril may be ascribed to their down-regulation of both NF-κB and TGF-β signaling pathways by acting on the intracellular ROS production in rats with LV hypertrophy, thus supporting the use of benazepril as an anti-inflammatory agent.
Collapse
Affiliation(s)
- Shi-Hai Yan
- Department of Pharmacology, Jiangsu Provincial Hospital of Traditional Chinese Medicine (TCM), Nanjing, China
| | | | | | | | | | | | | | | |
Collapse
|
25
|
Kong X, Ma MZ, Qin L, Zhang Y, Li XY, Wang GD, Su Q, Zhang DY. Pioglitazone enhances the blood pressure-lowering effect of losartan via synergistic attenuation of angiotensin II-induced vasoconstriction. J Renin Angiotensin Aldosterone Syst 2013; 15:259-70. [PMID: 23676251 DOI: 10.1177/1470320313489061] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
INTRODUCTION This study was designed to investigate the underlying mechanisms of synergistic antihypertensive effect produced by combination therapy of losartan and pioglitazone in metabolic syndrome (MS) rats. MATERIALS AND METHODS An MS model was induced by feeding rats a high-fat, high-sodium diet and 20% sucrose solution. Losartan (20 mg/kg/day), pioglitazone (10 mg/kg/day), and their combination were orally administered for eight consecutive weeks. Systolic blood pressure (SBP) and mean arterial pressure (MAP) were measured using the tail-cuff method and carotid arterial catheterization, respectively. The aortas were isolated and in vitro vascular reactivity studies were performed. The protein expression of angiotensin type 1 receptor (AT1), endothelial nitric oxide synthase (eNOS), phosphorylated eNOS and nicotinamide adenine dinucleotide phosphate (NADPH) oxidase subunit p47(phox), level of nitrotyrosine as well as activity of eNOS and NADPH oxidase in aortas of MS rats were detected. RESULTS After eight weeks of treatment, the SBP and MAP in the losartan (115 ± 5 and 106 ± 6 mmHg), pioglitazone (130 ± 6 and 118 ± 6 mmHg), and combination therapy (105 ± 6 and 98 ± 5 mmHg) groups were lower than those in the model group (150 ± 8 and 136 ± 9 mmHg). Combination therapy of losartan and pioglitazone reduced BP more than either monotherapy, and showed additive effects on improving endothelial dysfunction and abolishing the increased vascular responsiveness to angiotensin II. These synergistic effects were associated with further reductions in protein expression of p47(phox) and AT1, NADPH oxidase activity, and nitrotyrosine level. CONCLUSIONS Our data indicate that combined treatment exerts more beneficial effects on lowering BP and improving vascular lesions.
Collapse
Affiliation(s)
- Xiang Kong
- Department of Endocrinology, Xinhua Hospital,Shanghai Jiaotong University School of Medicine, China Department of Pharmacology, Third-Grade Pharmacology Laboratory of State Administration of Traditional Chinese Medicine, Wannan Medical College,China
| | - Ming-Zhe Ma
- Department of General Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, China
| | - Li Qin
- Department of Endocrinology, Xinhua Hospital,Shanghai Jiaotong University School of Medicine, China
| | - Yan Zhang
- Department of Gastroenterology,Yijishan Hospital Affiliated to Wannan Medical College, China
| | - Xiao-Yong Li
- Department of Endocrinology, Xinhua Hospital,Shanghai Jiaotong University School of Medicine, China
| | - Guo-Dong Wang
- Department of Pharmacy, Wannan Medical College,China
| | - Qing Su
- Department of Endocrinology, Xinhua Hospital,Shanghai Jiaotong University School of Medicine, China
| | - Dao-You Zhang
- Department of Nephrology,Yijishan Hospital Affiliated to Wannan Medical College, China
| |
Collapse
|
26
|
Boerhaavia diffusa L. attenuates angiotensin II-induced hypertrophy in H9c2 cardiac myoblast cells via modulating oxidative stress and down-regulating NF-κβ and transforming growth factor β1. Br J Nutr 2013; 110:1201-10. [PMID: 23591029 DOI: 10.1017/s0007114513000561] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The present study evaluated the antihypertrophic potential of the ethanolic extract of Boerhaavia diffusa (BDE), a well-known edible cardiotonic plant reported in Ayurveda against angiotensin II-induced hypertrophy in H9c2 cardiac myoblast cells. Markers of hypertrophy such as cell size, protein content and the concentrations of atrial natriuretic peptide (ANP) and B-type natriuretic peptide (BNP) were analysed for the confirmation of hypertrophy induction. Angiotensin II (100 nM) caused an increase in cell volume (69·26 (SD 1·21)%),protein content (48·48 (SD 1·64)%), ANP (81·90 (SD 1·22)%) and BNP (108·57 (SD 1·47)%). BDE treatment significantly reduced cell volume, protein content and the concentrations of ANP and BNP (P#0·05) in H9c2 cells. The activity of various antioxidant enzymes and the concentration of reduced glutathione, which was lowered due to hypertrophy, were increased in BDE-treated cells. The BDE treatment also reduced intracellular reactive oxygen species generation, lipid peroxidation and protein carbonyls in cells. In addition,the expression patterns of NF-kb and transforming growth factor b1 were found to be increased during hypertrophy, and their expressions were reduced on BDE treatment. In vitro chemical assays showed that BDE inhibits angiotensin-converting enzyme and xanthine oxidase in a dose-dependent manner with an estimated 50% effective concentration (EC50) value of 166·12 (SD 2·42) and 60·05 (SD 1·54) mg/ml,respectively. The overall results clearly indicate the therapeutic potential of B. diffusa against cardiac hypertrophy, in addition to its nutritional qualities.
Collapse
|
27
|
Desmodium gangeticum (Linn.) DC. Exhibits Antihypertrophic Effect in Isoproterenol-Induced Cardiomyoblasts via Amelioration of Oxidative Stress and Mitochondrial Alterations. J Cardiovasc Pharmacol 2013; 61:23-34. [DOI: 10.1097/fjc.0b013e3182756ad3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
28
|
Abstract
Cardiac hypertrophy (CH) is an adaptive response of the heart to pressure overload. It is a common pathological feature in the natural course of some major cardiovascular diseases, like, hypertension and myocardial infarction. Cardiac hypertrophy is strongly associated with an increased risk of heart failure and sudden cardiac death. The complex and dynamic pathophysiological mechanisms of CH has been the focus of intense scientific investigation, in an effort to design preventive and curative strategies. Oxidative stress has been identified as one of the key contributing factors in the development of cardiac hypertrophy. In this review, evidences supporting the oxidative stress as a cause of cardiac hypertrophy with emphasis on mitochondrial oxidative stress and possible options for pharmacological interventions have been discussed. Reactive oxygen species (ROS) also activate a broad variety of hypertrophy signaling kinases and transcription factors, like, MAP kinase, NF K-B, etc. In addition to profound alteration of cellular function, ROS modulate the extracellular matrix function, evidenced by increased interstitial and perivascular fibrosis. Translocator protein (TSPO) present in the outer mitochondrial membrane is known to be involved in oxidative stress and cardiovascular pathology. Recently, its role in cardiac hypertrophy has been reported by us. All these evidences strongly provide support to beneficial role of drugs which selectively interfere with the generation of free radicals or augment endogenous antioxidants in cardiac hypertrophy.
Collapse
Affiliation(s)
- Subir Kumar Maulik
- Department of Pharmacology, All India Institute of Medical Sciences, New Delhi, India.
| | | |
Collapse
|
29
|
Does green tea have an ameliorative effect against cabergoline-induced cardiotoxicity in adult male albino rats? A histological and biochemical study. ACTA ACUST UNITED AC 2012. [DOI: 10.1097/01.ehx.0000410916.13936.83] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
30
|
Perfecting the Plate: Adding Cardioprotective Compounds to the Diet. J Am Coll Surg 2012; 214:97-114. [DOI: 10.1016/j.jamcollsurg.2011.09.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Revised: 09/15/2011] [Accepted: 09/21/2011] [Indexed: 11/22/2022]
|
31
|
Bansal S, Syan N, Mathur P, Choudhary S. Pharmacological profile of green tea and its polyphenols: a review. Med Chem Res 2011. [DOI: 10.1007/s00044-011-9800-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
32
|
Chung MY, Park HJ, Manautou JE, Koo SI, Bruno RS. Green tea extract protects against nonalcoholic steatohepatitis in ob/ob mice by decreasing oxidative and nitrative stress responses induced by proinflammatory enzymes. J Nutr Biochem 2011; 23:361-7. [PMID: 21543212 DOI: 10.1016/j.jnutbio.2011.01.001] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2010] [Revised: 01/06/2011] [Accepted: 01/07/2011] [Indexed: 02/06/2023]
Abstract
Oxidative and nitrative stress responses resulting from inflammation exacerbate liver injury associated with nonalcoholic steatohepatitis (NASH) by inducing lipid peroxidation and protein nitration. The objective of this study was to investigate whether the anti-inflammatory properties of green tea extract (GTE) would protect against NASH by suppressing oxidative and nitrative damage mediated by proinflammatory enzymes. Obese mice (ob/ob) and their 5-week-old C57BL6 lean littermates were fed 0%, 0.5% or 1% GTE for 6 weeks (n=12-13 mice/group). In obese mice, hepatic lipid accumulation, inflammatory infiltrates and serum alanine aminotransferase activity were markedly increased, whereas these markers of hepatic steatosis, inflammation and injury were significantly reduced among obese mice fed GTE. GTE also normalized hepatic 4-hydroxynonenal and 3-nitro-tyrosine (N-Tyr) concentrations to those observed in lean controls. These oxidative and nitrative damage markers were correlated with alanine aminotransferase (P<.05; r=0.410-0.471). Improvements in oxidative and nitrative damage by GTE were also associated with lower hepatic nicotinamide adenine dinucleotide phosphate oxidase activity. Likewise, GTE reduced protein expression levels of hepatic myeloperoxidase and inducible nitric oxide synthase and decreased the concentrations of nitric oxide metabolites. Correlative relationships between nicotinamide adenine dinucleotide phosphate oxidase and hepatic 4-hydroxynonenal (r=0.364) as well as nitric oxide metabolites and N-Tyr (r=0.598) suggest that GTE mitigates lipid peroxidation and protein nitration by suppressing the generation of reactive oxygen and nitrogen species. Further study is warranted to determine whether GTE can be recommended as an effective dietary strategy to reduce the risk of obesity-triggered NASH.
Collapse
Affiliation(s)
- Min-Yu Chung
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, USA
| | | | | | | | | |
Collapse
|
33
|
Sae-tan S, Grove KA, Lambert JD. Weight control and prevention of metabolic syndrome by green tea. Pharmacol Res 2010; 64:146-54. [PMID: 21193040 DOI: 10.1016/j.phrs.2010.12.013] [Citation(s) in RCA: 120] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 12/20/2010] [Accepted: 12/21/2010] [Indexed: 12/22/2022]
Abstract
Green tea (Camellia sinensis, Theaceace) is the second most popular beverage in the world and has been extensively studied for its putative disease preventive effects. Green tea is characterized by the presence of a high concentrations of polyphenolic compounds known as catechins, with (-)-epigallocatechin-3-gallate (EGCG) being the most abundant and most well-studied. Metabolic syndrome (MetS) is a complex condition that is defined by the presence of elevated waist circumference, dysglycemia, elevated blood pressure, decrease serum high-density lipoprotein-associated cholesterol, and increased serum triglycerides. Studies in both in vitro and laboratory animal models have examined the preventive effects of green tea and EGCG against the symptoms of MetS. Overall, the results of these studies have been promising and demonstrate that green tea and EGCG have preventive effects in both genetic and dietary models of obesity, insulin resistance, hypertension, and hypercholesterolemia. Various mechanisms have been proposed based on these studies and include: modulation of dietary fat absorption and metabolism, increased glucose utilization, decreased de novo lipogenesis, enhanced vascular responsiveness, and antioxidative effects. In the present review, we discuss the current state of the science with regard to laboratory studies on green tea and MetS. We attempt to critically evaluate the available data and point out areas for future research. Although there is a considerable amount of data available, questions remain in terms of the primary mechanism(s) of action, the dose-response relationships involved, and the best way to translate the results to human intervention studies.
Collapse
Affiliation(s)
- Sudathip Sae-tan
- Department of Food Science, The Pennsylvania State University, University Park, PA 16802, United States
| | | | | |
Collapse
|
34
|
Liu J, Zhou J, An W, Lin Y, Yang Y, Zang W. Apocynin attenuates pressure overload-induced cardiac hypertrophy in rats by reducing levels of reactive oxygen species. Can J Physiol Pharmacol 2010; 88:745-52. [PMID: 20651822 DOI: 10.1139/y10-063] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
It has been shown that angiotensin II (Ang II) is involved in cardiac remodeling mediated by NADPH oxidase-dependent reactive oxygen species (ROS). Accordingly, NADPH oxidase-dependent ROS may play a role in cardiac hypertrophy induced by pressure overload. In the present study, we sought to determine whether inhibition of NADPH oxidase prevents cardiac hypertrophy. After abdominal aorta banding to induce cardiac hypertrophy, rats were treated for 8 weeks with apocynin (Apo) or captopril (Cap). Measures of cardiac hypertrophy were evaluated. Treatment with Cap or Apo reduced the left ventricle/body weight ratio (LV/BW), LV transnuclear myocyte diameter, and atrial natriuretic factor (ANF) mRNA expression relative to those of untreated rats subjected to aorta banding. The activity of NADPH oxidase and the ROS levels were decreased in treated animals. Cap, but not Apo, decreased Ang II levels and inhibited expression of p22phox and p67phox in LVs. In conclusion, local expression of Ang II appears to contribute to pressure overload-induced cardiac hypertrophy by upregulating NADPH oxidase expression and promoting ROS synthesis. Inhibition of NADPH oxidase and elimination of ROS may prevent or repair damage due to cardiac hypertrophy.
Collapse
Affiliation(s)
- Jinjun Liu
- Department of Physiology and Pathophysiology, School of Medicine, Xi'an Jiaotong University, Xi'an 710061, Shaanxi, China
| | | | | | | | | | | |
Collapse
|
35
|
Yao FR, Sun CW, Chang SKC. Morton lentil extract attenuated angiotensin II-induced cardiomyocyte hypertrophy via inhibition of intracellular reactive oxygen species levels in vitro. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:10382-10388. [PMID: 20815352 DOI: 10.1021/jf101648m] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The objective was to investigate whether a lentil (Morton) extract had any protective effect on cardiac hypertrophy, which is one of the most significant sequelae of cardiovascular diseases. High phenolic compounds (43.4 mg of GAE/g), including thirteen phenolic acid and two flavonoids, were detected in the acetone/water/acetic acid lentil extract. The extract showed strong antioxidant ability (105 μmol of TE/g). The effect of lentil extract on angiotensin (Ang) II-induced cardiac hypertrophy was examined. Results showed that pretreatment with lentil extract (25, 50, 100 μg/mL) significantly attenuated Ang II (0.1 μM)-induced hypertrophy by 18, 28, and 36% in rat cardiomycytes, respectively; lentil extract (12.5, 25, 50 μg/mL) attenuated Ang II (0.1 μM)-induced hypertrophy by 9, 17, and 25% in human cardiomycytes, respectively. Intracellular reactive oxygen species (ROS) levels were enhanced by Ang II treatment, and this stimulatory action was significantly attenuated (33% inhibition) by lentil extract (100 μg/mL) in rat cardiomyocytes and attenuated by 22% by 50 μg/mL lentil extract in human cardiomyocytes. In conclusion, Morton lentil extracts attenuated Ang II-induced rat and human cardiomyocytes hypertrophy via decreasing intracellular ROS levels.
Collapse
Affiliation(s)
- Fan-Rong Yao
- Department of Food and Cereal Sciences, North Dakota State University, 1320 Albrecht Boulevard, Fargo, North Dakota 58105, USA
| | | | | |
Collapse
|
36
|
Upaganlawar A, Gandhi C, Balaraman R. Effect of green tea and vitamin E combination in isoproterenol induced myocardial infarction in rats. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2009; 64:75-80. [PMID: 19058010 DOI: 10.1007/s11130-008-0105-9] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The present study was aimed to investigate the combined effects of green tea and vitamin E on heart weight, body weight, serum marker enzymes, lipid peroxidation, endogenous antioxidants and membrane bound ATPases in isoproterenol (ISO)-induced myocardial infarction in rats. Adult male albino rats, treated with ISO (200 mg/kg, s.c.) for 2 days at an interval of 24 h caused a significant (P<0.05) elevation of heart weight, serum marker enzymes, lipid peroxidation and Ca+2 ATPase level whereas there was a significant (P<0.05) decrease in body weight, endogenous antioxidants, Na+/ K+ ATPase and Mg+2 ATPase levels. Administration of green tea (100 mg/kg/day, p.o.) and vitamin E (100 mg/kg/day, p.o.) together for 30 consecutive days and challenged with ISO on the day 29th and 30th, showed a significant (P<0.05) decrease in heart weight, serum marker enzymes, lipid peroxidation, Ca+2 ATPase and a significant increase in the body weight, endogenous antioxidants, Na+/K+ ATPase and Mg+2 ATPase when compared with ISO treated group and green tea or vitamin E alone treated groups. These findings indicate the synergistic protective effect of green tea and vitamin E during ISO induced myocardial infarction in rats.
Collapse
Affiliation(s)
- Aman Upaganlawar
- Pharmacy Department, Faculty of Technology and Engineering, The M. S. University of Baroda, Vadodara, 390 002, Gujarat, India.
| | | | | |
Collapse
|