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Kumar G, Saleem N, Kumar S, Maulik SK, Ahmad S, Sharma M, Goswami SK. Transcriptomic Validation of the Protective Effects of Aqueous Bark Extract of Terminalia arjuna (Roxb.) on Isoproterenol-Induced Cardiac Hypertrophy in Rats. Front Pharmacol 2019; 10:1443. [PMID: 31920643 PMCID: PMC6916006 DOI: 10.3389/fphar.2019.01443] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Accepted: 11/12/2019] [Indexed: 12/17/2022] Open
Abstract
Aqueous extract of the bark of Terminalia arjuna (TA) is used by a large population in the Indian subcontinent for treating various cardiovascular conditions. Animal experiments have shown its anti-atherogenic, anti-hypertensive, and anti-inflammatory effects. It has several bioactive ingredients with hemodynamic, ROS scavenging, and anti-inflammatory properties. Earlier we have done limited proteomic and transcriptomic analysis to show its efficacy in ameliorating cardiac hypertrophy induced by isoproterenol (ISO) in rats. In the present study we have used high-throughput sequencing of the mRNA from control and treated rat heart to further establish its efficacy. ISO (5 mg/kg/day s.c.) was administered in male adult rats for 14 days to induce cardiac hypertrophy. Standardized aqueous extract TA bark extract was administered orally. Total RNA were isolated from control, ISO, ISO + TA, and TA treated rat hearts and subjected to high throughput sequence analysis. The modulations of the transcript levels were then subjected to bio-informatics analyses using established software. Treatment with ISO downregulated 1,129 genes and upregulated 204 others. Pre-treatment with the TA bark extracts markedly restored that expression pattern with only 97 genes upregulated and 85 genes downregulated. The TA alone group had only 88 upregulated and 26 downregulated genes. The overall profile of expression in ISO + TA and TA alone groups closely matched with the control group. The genes that were modulated included those involved in metabolism, activation of receptors and cell signaling, and cardiovascular and other diseases. Networks associated with those genes included those involved in angiogenesis, extracellular matrix organization, integrin binding, inflammation, drug metabolism, redox metabolism, oxidative phosphorylation, and organization of myofibril. Overlaying of the networks in ISO and ISO_TA group showed that those activated in ISO group were mostly absent in ISO_TA and TA group, suggesting a global effect of the TA extracts. This study for the first time reveals that TA partially or completely restores the gene regulatory network perturbed by ISO treatment in rat heart; signifying its efficacy in checking ISO-induced cardiac hypertrophy.
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Affiliation(s)
- Gaurav Kumar
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Nikhat Saleem
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Santosh Kumar
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Subir K Maulik
- Department of Pharmacology, All India Institute of Medical Sciences (A.I.I.M.S.), New Delhi, India
| | - Sayeed Ahmad
- Bioactive Natural Product Laboratory, Department of Pharmacognosy & Phytochemistry, School of Pharmaceutical Education & Research, New Delhi, India
| | - Manish Sharma
- Peptide and Proteomics Division, Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organisation, New Delhi, India
| | - Shyamal K Goswami
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
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Wang J, Shen W, Zhang JY, Jia CH, Xie ML. Stevioside attenuates isoproterenol-induced mouse myocardial fibrosis through inhibition of the myocardial NF-κB/TGF-β1/Smad signaling pathway. Food Funct 2019; 10:1179-1190. [PMID: 30735218 DOI: 10.1039/c8fo01663a] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Stevioside, a natural glycoside compound, has many beneficial biological activities, but its protective effect on myocardial fibrosis has not been reported yet. This study aimed to investigate the effect of stevioside. The isoproterenol-induced model mice were orally given stevioside 75-300 mg kg-1 for 40 days. The results showed that after the administration of stevioside, the myocardial hydroxyproline, collagen accumulation, and protein expressions of collagen I/III, α-smooth muscle actin, transforming growth factor-β1 (TGF-β1), nuclear factor kappa B p65 (NF-κB p65), Smad2/3, and P-Smad2/3 were decreased, while the glutathione peroxidase and superoxide dismutase levels in serum and myocardial tissues and protein expressions of myocardial peroxisome proliferator-activated receptor γ (PPARγ) and Smad7 were increased. After the preincubation of isoproterenol-stimulated cardiac fibroblasts with the PPARγ antagonist GW9662, stevioside-reduced protein expressions were decreased, but stevioside-induced Smad7 was not affected. These findings demonstrated that stevioside could exert a protective effect on mouse myocardial fibrosis, and its mechanisms were associated with the increments of antioxidant ability, PPARγ activation, and Smad7 expression, which caused a synergistic inhibition of the NF-κB/TGF-β1/Smad signaling pathway.
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Affiliation(s)
- Jia Wang
- Department of Pharmacology, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, Jiangsu Province, China.
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Manu TM, Anand T, Pandareesh MD, Kumar PB, Khanum F. Terminalia arjuna extract and arjunic acid mitigate cobalt chloride-induced hypoxia stress-mediated apoptosis in H9c2 cells. Naunyn Schmiedebergs Arch Pharmacol 2019; 392:1107-1119. [PMID: 31069430 DOI: 10.1007/s00210-019-01654-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Accepted: 04/11/2019] [Indexed: 12/11/2022]
Abstract
Arjunic acid (AA) is one of the major active component of Terminalia arjuna known for its health benefits. In the present study, we evaluated cardioprotective potential of Terminalia arjuna extract (TAE) and AA against cobalt chloride (CoCl2)-induced hypoxia damage and apoptosis in rat cardiomyocytes. TAE (50 μg/ml) and AA (8 μg/ml) significantly (p < 0.001) protected H9c2 cells as evidenced by cell viability assays against CoCl2 (1.2 mM)-induced cytotoxicity. TAE and AA pretreatments protected the cells from oxidative damage by decreasing the generation of free radicals (ROS, hydroperoxide, and nitrite levels). TAE and AA pretreatments retained mitochondrial membrane potential by alleviating the rate of lipid peroxidation induced by CoCl2 treatment. TAE and AA pretreatments elevated antioxidant status including phase II antioxidant enzymes (superoxide dismutase, catalase, glutathione peroxidase, and glutathione reductase) and total glutathione levels against CoCl2-induced oxidative stress. Further immunoblotting studies confirmed anti-apoptotic effects of TAE and AA by alleviating the phosphorylation of JNK and c-jun and also by regulating protein expression levels of Bcl2, Bax, caspase 3, heat shock protein-70, and inducible nitric oxide synthase. Overall, our results suggest that both the extract and the active component exhibit antioxidant and anti-apoptotic defense against CoCl2-induced hypoxic injury.
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Affiliation(s)
- T Mohan Manu
- Nutrition, Biochemistry and Toxicology Division, Defence Food Research Laboratory, Mysuru, 570011, India
| | - T Anand
- Nutrition, Biochemistry and Toxicology Division, Defence Food Research Laboratory, Mysuru, 570011, India.
| | - M D Pandareesh
- Nutrition, Biochemistry and Toxicology Division, Defence Food Research Laboratory, Mysuru, 570011, India
| | - P Bhuvanesh Kumar
- Nutrition, Biochemistry and Toxicology Division, Defence Food Research Laboratory, Mysuru, 570011, India
| | - Farhath Khanum
- Nutrition, Biochemistry and Toxicology Division, Defence Food Research Laboratory, Mysuru, 570011, India
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Luteolin-7-diglucuronide attenuates isoproterenol-induced myocardial injury and fibrosis in mice. Acta Pharmacol Sin 2017; 38:331-341. [PMID: 28112175 DOI: 10.1038/aps.2016.142] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 11/07/2016] [Indexed: 12/12/2022] Open
Abstract
Myocardial injury and ensuing fibrotic alterations impair normal heart architecture and cause cardiac dysfunction. Oxidative stress has been recognized as a key player in the pathogenesis of cardiac injury and progression of cardiac dysfunction, and promoting fibrosis. In the current study we investigated whether luteolin-7-diglucuronide (L7DG), a naturally occurring antioxidant found in edible plants, could attenuate isoproterenol (ISO)-induced myocardial injury and fibrosis in mice and the underlying mechanisms. Myocardial injury and fibrosis were induced in mice via injection of ISO (5 mg·kg-1·d-1, ip) for 5 or 10 d. Two treatment regimens (pretreatment and posttreatment) were employed to administer L7DG (5-40 mg·kg-1·d-1, ip) into the mice. After the mice were euthanized, morphological examinations of heart sections revealed that both L7DG pretreatment and posttreatment regimens significantly attenuated ISO-induced myocardial injury and fibrosis. But the pretreatment regimen caused better protection against ISO-induced myocardial fibrosis than the posttreatment regimen. Furthermore, L7DG pretreatment blocked ISO-stimulated expression of the genes (Cyba, Cybb, Ncf1, Ncf4 and Rac2) encoding the enzymatic subunits of NADPH oxidase, which was the primary source of oxidant production in mammalian cells. Moreover, L7DG pretreatment significantly suppressed ISO-stimulated expression of collagen genes Col1a1, Col1a2, Col3a1, and Col12a1 and non-collagen extracellular matrix genes fibrillin-1, elastin, collagen triple helix repeat containing 1 and connective tissue growth factor. In addition, L7DG pretreatment almost reversed ISO-altered expression of microRNAs that were crosstalking with TGFβ-mediated fibrosis, including miR-29c-3p, miR-29c-5p, miR-30c-3p, miR-30c-5p and miR-21. The current study demonstrated for the first time that L7DG is pharmacologically effective in protecting the heart against developing ISO-induced injury and fibrosis, justifying further evaluation of L7DG as a cardioprotective agent to treat related cardiovascular diseases.
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Kumar S, Jahangir Alam M, Prabhakar P, Ahmad S, Maulik SK, Sharma M, Goswami SK. Proteomic analysis of the protective effects of aqueous bark extract of Terminalia arjuna (Roxb.) on isoproterenol-induced cardiac hypertrophy in rats. JOURNAL OF ETHNOPHARMACOLOGY 2017; 198:98-108. [PMID: 28063919 DOI: 10.1016/j.jep.2016.12.050] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 12/12/2016] [Accepted: 12/31/2016] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Aqueous bark extract of Terminalia arjuna (TA) has been in use as an ethnomedicine for cardiovascular ailments in the Indian subcontinent for centuries. Studies using hemodynamic, ROS scavenging and anti-inflammatory parameters in animal models have shown its anti-atherogenic, hypotensive, inotropic, anti-inflammatory effects. However, details analysis on its effects on established molecular and cell biological markers are a prerequisite for its wider acceptance to the medical community. AIMS OF THE STUDY To test the efficacy of TA extract in ameliorating cardiac hypertrophy induced by ISO in rats. METHODS Cardiac hypertrophy was induced by ISO (5mg/kg/day s.c. for 14 days) in rats and a standardized aqueous extract of TA stem bark was orally administered by gavage. Total RNA and protein were isolated from control, ISO, ISO plus TA and TA treated rat hearts and analyzed for the transcripts for the markers of hypertrophy, signaling kinases, transcription factors and total protein profile. RESULTS TA extract reversed the induction of fetal genes like β-myosin heavy chain, skeletal α-actin and brain natriuretic peptide in hypertrophic rat hearts. While ISO slightly increased the level of phospho-ERK, TA repressed it to about one third of the base line level. Survival kinase Akt, ER stress marker Grp78 and epigenetic regulator HDAC5 were augmented by ISO and TA restored them by various extents. ISO administration moderately increased the transcription factor NFκB binding activity, while coadministration of TA further increased it. AP-1 binding activity was largely unchanged by ISO treatment but it was upregulated when administered along with TA. MEF2D binding activity was increased by ISO and TA restored it to the baseline level. Global proteomic analysis revealed that TA treatment restored a subset of proteins up- and down-regulated in the hypertrophied hearts. Amongst those restored by TA were purinergic receptor X, myosin light chain 3, tropomyosin, and kininogen; suggesting a nodal role of TA in modulating cardiac function. CONCLUSIONS This study for the first time reveals that TA partially or completely restores the marker mRNAs, signaling kinases, transcription factors and total protein profile in rat heart, thereby demonstrating its efficacy in preventing ISO-induced cardiac hypertrophy.
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Affiliation(s)
- Santosh Kumar
- School of Life Sciences, Jawaharlal Nehru University, New Mehrauli Road, New Delhi 110067, India.
| | - Md Jahangir Alam
- School of Life Sciences, Jawaharlal Nehru University, New Mehrauli Road, New Delhi 110067, India.
| | - Pankaj Prabhakar
- Department of Pharmacology, All India Institute of Medical Sciences (A.I.I.M.S.), Ansari Nagar, 110029, New Delhi, India.
| | - Sayeed Ahmad
- Department of Pharmacognosy and Phytochemistry, Faculty of Pharmacy, Jamia Hamdard, Hamdard Nagar, New Delhi 110062, India.
| | - Subir K Maulik
- Department of Pharmacology, All India Institute of Medical Sciences (A.I.I.M.S.), Ansari Nagar, 110029, New Delhi, India.
| | - Manish Sharma
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi 110054, India.
| | - Shyamal K Goswami
- School of Life Sciences, Jawaharlal Nehru University, New Mehrauli Road, New Delhi 110067, India.
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Meghwani H, Prabhakar P, Mohammed SA, Seth S, Hote MP, Banerjee SK, Arava S, Ray R, Maulik SK. Beneficial effects of aqueous extract of stem bark of Terminalia arjuna (Roxb.), An ayurvedic drug in experimental pulmonary hypertension. JOURNAL OF ETHNOPHARMACOLOGY 2017; 197:184-194. [PMID: 27401289 DOI: 10.1016/j.jep.2016.07.029] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 07/04/2016] [Accepted: 07/08/2016] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The stem bark of Terminalia arjuna (Roxb.) is widely used in Ayurveda in various cardiovascular diseases. Many animal and clinical studies have validated its anti-ischemic, antihypertensive, antihypertrophic and antioxidant effects. Pulmonary hypertension (PH) is a fatal disease which causes right ventricular hypertrophy and right heart failure. Pulmonary vascular smooth muscle hypertrophy and increased oxidative stress are major pathological features of PH. As available limited therapeutic options fail to reduce the mortality associated with PH, alternative areas of therapy are worth exploring for potential drugs, which might be beneficial in PH. AIM OF THE STUDY The effect of a standardised aqueous extract of the stem bark of Terminalia arjuna (Roxb.) in preventing monocrotaline (MCT)-induced PH in rat was investigated. MATERIALS AND METHODS The study was approved by Institutional Animal Ethics Committe. Male Wistar rats (150-200g) were randomly distributed into five groups; Control, MCT (50mg/kg subcutaneously once), sildenafil (175µg/kg/day three days after MCT for 25 days), and Arjuna extract (TA125 and TA250 mg/kg/day orally after MCT for 25 days). PH was confirmed by right ventricular weight to left ventricular plus septum weight (Fulton index), right ventricular systolic pressure (RVSP), echocardiography, percentage medial wall thickness of pulmonary arteries (%MWT). Oxidative stress in lung was assessed by super oxide dismutase (SOD), catalase, reduced glutathione (GSH) and thiobarbituric acid reactive substance (TBARS). The protein expressions of nicotinamide adenine dinucleotide phosphate (NADPH) oxidase (NOX-1) in lung and gene expression of Bcl2 and Bax in heart were analyzed by Western blot and RT PCR respectively. RESULTS MCT caused right ventricular hypertrophy (0.58±0.05 vs 0.31±0.05; P<0.001 vs. control) and increase in RVSP (33.5±1.5 vs 22.3±4.7mm of Hg; P<0.001). Both sildenafil and Arjuna prevented hypertrophy and RVSP. Pulmonary artery acceleration time to ejection time ratio in echocardiography was decreased in PH rats (0.49±0.05 vs 0.32±0.06; P<0.001) which was prevented by sildenafil (0.44±0.06; P<0.01) and TA250 (0.45±0.06; P<0.01). % MWT of pulmonary arteries was increased in PH and was prevented by TA250. Increase in TBARS (132.7±18.4 vs 18.8±1.6nmol/mg protein; P<0.001) and decrease in SOD (58.4±14.1 vs 117.4±26.9U/mg protein; P<0.001) and catalase (0.30±0.05 vs 0.75±0.31U/mg protein; P<0.001) were observed in lung tissue of PH rats, which were prevented by sildenafil and both the doses of Arjuna extract. Protein expression of NOX1 was significantly increased in lung and gene expression of Bcl2/Bax ratio was significantly decreased in right ventricle in MCT-induced PH, both were significantly prevented by Arjuna and sildenafil. CONCLUSIONS Aqueous extract of Terminalia arjuna prevented MCT-induced pulmonary hypertension which may be attributed to its antioxidant as well as its effects on pulmonary arteriolar wall thickening.
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Affiliation(s)
- Himanshu Meghwani
- Department of Pharmacology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Pankaj Prabhakar
- Department of Pharmacology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Soheb A Mohammed
- Drug Discovery Research Center (DDRC), Translational Health Science and Technology Institute (THSTI), Faridabad, Haryana 121001, India
| | - Sandeep Seth
- Department of Cardiology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Milind P Hote
- Cardiothoracic and Vascular Surgery, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Sanjay K Banerjee
- Drug Discovery Research Center (DDRC), Translational Health Science and Technology Institute (THSTI), Faridabad, Haryana 121001, India
| | - Sudheer Arava
- Pathology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Ruma Ray
- Pathology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Subir Kumar Maulik
- Department of Pharmacology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India.
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Amalraj A, Gopi S. Medicinal properties of Terminalia arjuna (Roxb.) Wight & Arn.: A review. J Tradit Complement Med 2017; 7:65-78. [PMID: 28053890 PMCID: PMC5198828 DOI: 10.1016/j.jtcme.2016.02.003] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 02/10/2016] [Accepted: 02/12/2016] [Indexed: 11/30/2022] Open
Abstract
Medicinal plants have been a main source of therapeutic agents from ancient time to cure diseases. Terminalia arjuna (Roxb.) Wight & Arn. (T. arjuna) is one of the most accepted and beneficial medicinal plants in indigenous system of medicine for the treatment of various critical diseases. This comprehensive review provides various aspects of its ethnomedical, phytochemical, pharmacognostical, pharmacological and clinical significance to different diseases particularly in cardiovascular conditions. This plant has a good safety outline when used in combination with other conventional drugs. This review highlights various medicinal properties of T. arjuna through different studies such as antioxidant, hypotensive, anti-atherogenic, anti-inflammatory, anti-carcinogenic, anti-mutagenic and gastro-productive effect.
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Affiliation(s)
| | - Sreeraj Gopi
- R&D Centre, Aurea Biolabs Pvt Ltd, Kolenchery, Cochin, India
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Lima-Seolin BGD, Colombo R, Bonetto JHP, Teixeira RB, Donatti LM, Casali KR, Godoy AEG, Litvin IE, Schenkel PC, Rosa Araujo ASD, Belló-Klein A. Bucindolol improves right ventricle function in rats with pulmonary arterial hypertension through the reversal of autonomic imbalance. Eur J Pharmacol 2016; 798:57-65. [PMID: 28011346 DOI: 10.1016/j.ejphar.2016.12.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 12/15/2016] [Accepted: 12/19/2016] [Indexed: 12/22/2022]
Abstract
Pulmonary arterial hypertension (PAH) is characterised by an elevation in afterload imposed on the right ventricle (RV), leading to hypertrophy and failure. The autonomic nervous system (ANS) plays a key role in the progression to heart failure, and the use of beta-blockers attenuates this process. The aim of this study was to verify the role of bucindolol, aβ1-, β2- and α1-blocker, on the ANS, and its association with RV function in rats with PAH. Male Wistar rats were divided into four groups: control, monocrotaline, control+bucindolol, and monocrotaline+bucindolol. PAH was induced by a single intraperitoneal injection of monocrotaline (60mg/kg). After two weeks, animals were treated for seven days with bucindolol (2mg/kg/day i.p.) or vehicle. At the end of the treatment, animals underwent echocardiographic assessment, catheterisation of the femoral artery and RV, and tissue collection for morphometric and histological evaluation. In the monocrotaline+bucindolol group, there was a decrease in mean pulmonary artery pressure (33%) and pulmonary congestion (21%), when compared to the monocrotaline. Bucindolol treatment also reduced RV pleomorphism, necrosis, fibrosis and infiltration of inflammatory cells. An improvement in RV systolic function was also observed in the monocrotaline+bucindolol group compared to the monocrotaline. In addition, bucindolol promoted a decrease in the cardiac sympathovagal balance (93%) by reducing sympathetic drive (70%) and increasing parasympathetic drive (142%). Bucindolol also reduced blood pressure variability (75%). Our results show that the beneficial effects from bucindolol treatment appeared to be a consequence of the reversal of monocrotaline-induced autonomic imbalance.
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Affiliation(s)
- Bruna Gazzi de Lima-Seolin
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Institute of Basic Health Science (ICBS), Universidade Federal do Rio Grande do Sul (UFRGS), Rio Grande do Sul, Brazil.
| | - Rafael Colombo
- Laboratory of Pharmacology and Physiology, Universidade de Caxias do Sul (UCS), Rio Grande do Sul, Brazil.
| | - Jéssica Hellen Poletto Bonetto
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Institute of Basic Health Science (ICBS), Universidade Federal do Rio Grande do Sul (UFRGS), Rio Grande do Sul, Brazil.
| | - Rayane Brinck Teixeira
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Institute of Basic Health Science (ICBS), Universidade Federal do Rio Grande do Sul (UFRGS), Rio Grande do Sul, Brazil.
| | - Luiza Mezzomo Donatti
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Institute of Basic Health Science (ICBS), Universidade Federal do Rio Grande do Sul (UFRGS), Rio Grande do Sul, Brazil.
| | - Karina Rabello Casali
- Institute of Science and Technology (ICT), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | | | - Isnard Elman Litvin
- Research Institute for Multicenter Studies (IPCEM), Universidade de Caxias do Sul (UCS), Rio Grande do Sul, Brazil.
| | - Paulo Cavalheiro Schenkel
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Institute of Basic Health Science (ICBS), Universidade Federal do Rio Grande do Sul (UFRGS), Rio Grande do Sul, Brazil.
| | - Alex Sander da Rosa Araujo
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Institute of Basic Health Science (ICBS), Universidade Federal do Rio Grande do Sul (UFRGS), Rio Grande do Sul, Brazil.
| | - Adriane Belló-Klein
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Institute of Basic Health Science (ICBS), Universidade Federal do Rio Grande do Sul (UFRGS), Rio Grande do Sul, Brazil.
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Maulik SK, Wilson V, Seth S, Bhargava B, Dua P, Ramakrishnan S, Katiyar CK. Clinical efficacy of water extract of stem bark of Terminalia arjuna (Roxb. ex DC.) Wight & Arn. in patients of chronic heart failure: a double-blind, randomized controlled trial. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2016; 23:1211-1219. [PMID: 26988798 DOI: 10.1016/j.phymed.2016.02.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 02/04/2016] [Accepted: 02/05/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND The stem bark of Terminalia arjuna (Roxb. ex DC.) Wight and Arn. (Arjuna) is used in Indian system of medicine (Ayurveda) for treatment of various cardiac diseases, including heart failure. However, well designed clinical trials exploring its efficacy and safety in chronic heart failure (CHF) are lacking. PURPOSE To ascertain the add-on efficacy and safety of a standardized water extract of stem bark of Arjuna (Arjuna extract) in CHF patients on standard pharmacotherapy. STUDY DESIGN Double-blind, parallel, randomized, placebo-controlled add-on clinical trial. METHODS After approval of institutional ethics committee, 100 patients of CHF of New York Heart Association (NYHA) functional class II on standard pharmacotherapy having an echocardiographic left ventricular ejection fraction (LVEF) ≤ 40% were consecutively recruited with informed consent and randomized 1:1 to Arjuna extract 750 mg or matching placebo twice daily. The primary outcome measure was change in LVEF at 12 weeks. Secondary outcome measures included changes in (i) NYHA functional class, (ii) distance covered in 6 min walk test (6MWT), (iii) quality of life (QoL), as determined by the Kansas City Cardiomyopathy Questionnaire (KCCQ), (iv) plasma brain natriuretic peptide, (v) plasma cytokines (interleukin-6, high sensitivity C-reactive protein and tumour necrosis factor-α) and (vi) oxidative stress markers [serum thiobarbituric acid reactive substances (TBARS), red blood cell (RBC) superoxide dismutase (SOD), RBC catalase and RBC glutathione (GSH)] at 6 and 12 weeks. Safety assessment was done by adverse event monitoring and laboratory investigations. Results were expressed as mean ± SD or median (interquartile range) and analysed with intention-to- treat principle using appropriate two-sided statistical tests. A p-value < 0.05 was considered significant. RESULTS Arjuna extract was well-tolerated, but did not change LVEF (24.3 ± 7.1 versus 25.5 ± 7.7%; p = 0.4) or secondary outcome measures except preservation of RBC catalase activity [1275(104, 10350) versus 1243.5(104, 10350) U/g haemoglobin; p = 0.01] compared to placebo. Significantly greater percentage increases occurred in distance covered in 6 MWT, RBC-SOD, RBC catalase, RBC GSH and in symptom severity and stability domains of KCCQ in patients on Arjuna extract versus those on placebo, on a post-hoc analysis, between subgroups of patients who improved in these outcomes. CONCLUSION Arjuna extract did not improve LVEF in CHF patients over 12 weeks, although there was improvement in functional capacity, antioxidant reserves and symptom-related QoL domains in some patients.
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Affiliation(s)
- Subir K Maulik
- Department of Pharmacology, All India Institute of Medical Sciences (A.I.I.M.S.), Ansari Nagar, 110029 New Delhi, India..
| | - Vinu Wilson
- Department of Pharmacology, All India Institute of Medical Sciences (A.I.I.M.S.), Ansari Nagar, 110029 New Delhi, India.; Department of Pharmacology, Sree Gokulam Medical College & Research Foundation, Venjaramoodu, Trivandrum, 695607 Kerala, India
| | - Sandeep Seth
- Department of Cardiology, All India Institute of Medical Sciences (A.I.I.M.S.), Ansari Nagar, 110029 New Delhi, India
| | - Balram Bhargava
- Department of Cardiology, All India Institute of Medical Sciences (A.I.I.M.S.), Ansari Nagar, 110029 New Delhi, India
| | - Pamila Dua
- Department of Pharmacology, All India Institute of Medical Sciences (A.I.I.M.S.), Ansari Nagar, 110029 New Delhi, India
| | - Sivasubramanian Ramakrishnan
- Department of Cardiology, All India Institute of Medical Sciences (A.I.I.M.S.), Ansari Nagar, 110029 New Delhi, India
| | - Chandra K Katiyar
- Dabur India Limited, Ghaziabad, 201010 Uttar Pradesh, India.; Emami Limited, Kolkata, 700107 West Bengal, India
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Yu F, Zheng A, Qian J, Li Y, Wu L, Yang J, Gao X. Prenatal nicotine exposure results in the myocardial fibrosis in the adult male offspring rats. ACTA ACUST UNITED AC 2016; 68:445-50. [PMID: 27436000 DOI: 10.1016/j.etp.2016.07.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 06/07/2016] [Accepted: 07/11/2016] [Indexed: 12/21/2022]
Abstract
Our previous study showed that prenatal nicotine exposure could increase the heart rate of adult male offspring rats, but little is known about the mechanism. The aim of this study was to investigate the mechanism. Nicotine was subcutaneously administered to pregnant rats at a dose of 1.5mgkg(-1) from the gestational days 3-21; the control group received the same volume of saline by the same route. The offsprings' heart weight, ejection function, ultrastructure, and blood hormones were determined. The present study exhibited that prenatal nicotine exposure significantly decreased the offsprings' heart and body weight at gestational day 21 and at day 15 after birth, but had no effect on the heart and body weight at 90 days after birth. The hearts were fibrosed in the nicotine exposed male offsprings, and the heart ejection functions of the nicotine male offsprings at 90 days after birth were decreased, including SV, FS and EF. In addition, prenatal nicotine exposure significantly increased the offspring's blood adrenaline and norepinephrine levels. These data suggest that the increased heart rate caused by prenatal nicotine exposure may be a result of myocardial fibrosis, which leads to heart function decreases, and these data imply a myocardial fibrosis risk of prenatal nicotine exposure.
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Affiliation(s)
- Feng Yu
- School of Medicine and Nursing sciences, Huzhou University, Huzhou, China.
| | - Aiqiang Zheng
- Department of Cardiology, Changxing People's Hospital, China
| | - Jin Qian
- School of Medicine and Nursing sciences, Huzhou University, Huzhou, China
| | - Yuexia Li
- School of Medicine and Nursing sciences, Huzhou University, Huzhou, China
| | - Lei Wu
- Centers for Disease Control and Prevention of Suzhou Industrial Park, Suzhou 215021, China
| | - Jian Yang
- Department of Cardiology, The First Affiliated Hospital, College of Medicine, Zhejiang University, China
| | - Xiren Gao
- School of Medicine and Nursing sciences, Huzhou University, Huzhou, China
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Abstract
Terminalia arjuna, commonly known as arjuna, belongs to the family of Combretaceae. Its bark decoction is being used in the Indian subcontinent for anginal pain, hypertension, congestive heart failure, and dyslipidemia, based on the observations of ancient physicians for centuries. The utility of arjuna in various cardiovascular diseases needs to be studied further. Therefore, the present review is an effort to give a detailed survey of the literature summarizing the experimental and clinical studies pertinent to arjuna in cardiovascular disorders, which were particularly performed during the last decade. Systematic reviews, meta-analyses, and clinical studies of arjuna were retrieved through the use of PubMed, Google Scholar, and Cochrane databases. Most of the studies, both experimental and clinical, have suggested that the crude drug possesses anti-ischemic, antioxidant, hypolipidemic, and antiatherogenic activities. Its useful phytoconstituents are: Triterpenoids, β-sitosterol, flavonoids, and glycosides. Triterpenoids and flavonoids are considered to be responsible for its beneficial antioxidant cardiovascular properties. The drug has shown promising effect on ischemic cardiomyopathy. So far, no serious side effects have been reported with arjuna therapy. However, its long-term safety still remains to be elucidated. Though it has been found quite useful in angina pectoris, mild hypertension, and dyslipidemia, its exact role in primary/secondary coronary prevention is yet to be explored.
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Affiliation(s)
- Shridhar Dwivedi
- Department of Medicine and Preventive Cardiology, Hamdard Institute of Medical Sciences and Research, Jamia Hamdard, New Delhi, India
| | - Deepti Chopra
- Department of Pharmacology, Hamdard Institute of Medical Sciences and Research, Jamia Hamdard, New Delhi, India
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Kapoor D, Vijayvergiya R, Dhawan V. Terminalia arjuna in coronary artery disease: ethnopharmacology, pre-clinical, clinical & safety evaluation. JOURNAL OF ETHNOPHARMACOLOGY 2014; 155:1029-1045. [PMID: 25014508 DOI: 10.1016/j.jep.2014.06.056] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Revised: 06/28/2014] [Accepted: 06/30/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Terminalia arjuna (Roxb.) Wight & Arn. is one of the most popular and beneficial medicinal plants in indigenous system of medicine for the treatment of cardiovascular diseases. This comprehensive review provides latest updates on traditional use, phytochemistry, pharmacological and toxicological data, clinical efficacy and safety of Terminalia arjuna as well as outlined strategies for future research and development to scientifically validate the therapeutic potential of this plant. MATERIALS AND METHODS Information about Terminalia arjuna was collected via a systematic electronic and library search of various indexed and non-indexed journals, some local books and varied articles published on ethnopharmacology, phytochemistry and traditional uses. Various pre-clinical (2000-2014) and clinical studies (1990-2014) have also been considered regarding efficacy and safety profile of Terminalia arjuna. RESULTS Evidence from various in vitro, in vivo and clinical trials reveal the pleiotropic effects of Terminalia arjuna such as anti-atherogenic, hypotensive, inotropic, anti-inflammatory, anti-thrombotic and antioxidant actions for treatment of various cardiovascular disorders. It is clearly documented that this plant has a good safety profile when used in conjunction with other conventional drugs. However, there is a paucity of data regarding the exact molecular mechanism of its action, appropriate form of drug administration, whether whole crude drug or aqueous or alcoholic extract should be used, toxicological studies and its interaction with other drugs. CONCLUSIONS In conclusion, this review highlights the importance as well as pleiotropic actions and functional aspects of Terminalia arjuna especially in cardiovascular diseases. Though, various pharmacological studies and clinical trials support its benefit in the CVD as per traditional use, new clinical trials using more rigorous state of the art technology and in a larger population setup are warranted to assess the traditional putative efficacy of Terminalia arjuna.
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Affiliation(s)
- Divya Kapoor
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Rajesh Vijayvergiya
- Department of Cardiology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Veena Dhawan
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India.
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Shukla SK, Sharma SB, Singh UR. Pre-treatment with α-tocopherol and Terminalia arjuna ameliorates, pro-inflammatory cytokines, cardiac and apoptotic markers in myocardial infracted rats. Redox Rep 2014; 20:49-59. [PMID: 25180938 DOI: 10.1179/1351000214y.0000000104] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
OBJECTIVE This study was aimed to evaluate the cardioprotective potential of combination of T. arjuna and α-tocopherol in isoproterenol induced myocardial injury. METHODS Wistar albino rats were pre-treated with hydroalcoholic extract of T. arjuna (HETA) and α-tocopherol (100 mg/kg b. w) daily for 30 days. Isoproterenol (ISP, 85 mg/kg b.w) was administered on 28th and 29th days at an interval of 24 hr. RESULTS ISP treated rats showed significant increase in lipid peroxidation (MDA), cardiac markers (CK-MB, SGOT, Trop I and LDH), pro-inflammatory cytokine (IL-6, CRP, TNF-α) levels and apoptotic markers (Bcl-2/Bax) as compared to healthy group. Pre-treatment with HETA 100 mg/kg b. w, reduced the elevated levels of these markers and significant effect (p<0.05) were observed with the combination of HETA and α-tocopherol at a dose of 100 mg/kg b. w, which was further confirmed by histopathological studies. CONCLUSION The present study concluded that the combination of α-tocopherol (100 mg/kg b. w) and hydroalcoholic extract of T. arjuna (100 mg/kg b. w) augments endogenous antioxidant compounds of rat heart and also prevents the myocardium from ISP-induced myocardial injury and it may have therapeutic and prophylactic value in the treatment of ischemic heart disease.
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Hussain SA, Panjagari NR, Singh RRB, Patil GR. Potential Herbs and Herbal Nutraceuticals: Food Applications and Their Interactions with Food Components. Crit Rev Food Sci Nutr 2014; 55:94-122. [DOI: 10.1080/10408398.2011.649148] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Khaliq F, Parveen A, Singh S, Hussain ME, Fahim M. Terminalia arjuna improves cardiovascular autonomic neuropathy in streptozotocin-induced diabetic rats. Cardiovasc Toxicol 2013; 13:68-76. [PMID: 23001577 DOI: 10.1007/s12012-012-9187-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The present study was designed to examine the therapeutic potential of Terminalia arjuna bark extract in improving cardiovascular autonomic neuropathy in Streptozotocin (STZ)-induced diabetic Wistar Albino rats. The baroreflex was evaluated by measuring the changes in heart rate with changes in arterial blood pressure induced by bolus injections of phenylephrine (vasoconstrictor) and sodium nitroprusside (vasodilator). T. arjuna bark extract, Rosuvastatin and Insulin were tested/administered therapeutically in rat model of uncontrolled diabetes. After 8 weeks of STZ administration, the reflex bradycardia and tachycardia response to hypertension and hypotension, respectively, were impaired in the diabetic group. The reflex bradycardia improved significantly after 1 month treatment of T. arjuna while the reflex tachycardia could not improve. The decreased body weight, heart rate, blood pressure and raised blood sugar in diabetic rats were not improved by T. arjuna therapy. Rosuvastatin treatment exerted similar effects while Insulin improved all the parameters. Further T. arjuna, Rosuvastatin and Insulin significantly reduced oxidative stress and inflammatory cytokine levels in diabetic rats. Results suggest that T. arjuna bark extract improves the altered baroreflex sensitivity in diabetic rats possibly through maintaining endogenous antioxidant enzyme activities and decreasing cytokine levels.
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Affiliation(s)
- Farah Khaliq
- Department of Physiology, University College of Medical Sciences and GTB Hospital, Dilshad Garden, New Delhi 110095, India.
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Lee JS, Kim HG, Han JM, Lee JS, Son SW, Ahn YC, Son CG. Myelophil ameliorates brain oxidative stress in mice subjected to restraint stress. Prog Neuropsychopharmacol Biol Psychiatry 2012; 39:339-47. [PMID: 22813841 DOI: 10.1016/j.pnpbp.2012.07.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2012] [Revised: 06/29/2012] [Accepted: 07/06/2012] [Indexed: 12/22/2022]
Abstract
We evaluated the pharmacological effects of Myelophil, a 30% ethanol extract of a mix of Astragali Radix and Salviae Radix, on oxidative stress-induced brain damage in mice caused by restraint stress. C57BL/6 male mice (eight weeks old) underwent daily oral administration of distilled water, Myelophil (25, 50, or 100mg/kg), or ascorbic acid (100mg/kg) 1h before induction of restraint stress, which involved 3h of immobilization per day for 21days. Nitric oxide levels, lipid peroxidation, activities of antioxidant enzymes (superoxide dismutase, catalase, and glutathione redox system enzymes), and concentrations of adrenaline, corticosterone, and interferon-γ, were measured in brain tissues and/or sera. Restraint stress-induced increases in nitric oxide levels (serum and brain tissues) and lipid peroxidation (brain tissues) were significantly attenuated by Myelophil treatment. Restraint stress moderately lowered total antioxidant capacity, catalase activity, glutathione content, and the activities of glutathione reductase, glutathione peroxidase, and glutathione S-transferase; all these responses were reversed by Myelophil. Myelophil significantly attenuated the elevated serum concentrations of adrenaline and corticosterone and restored serum and brain interferon-γ levels. Moreover, Myelophil normalized expression of the genes encoding monoamine oxidase A, catechol-O-methyltransferase, and phenylethanolamine N-methyltransferase, which was up-regulated by restraint stress in brain tissues. These results suggest that Myelophil has pharmacological properties protects brain tissues against stress-associated oxidative stress damage, perhaps in part through regulation of stress hormones.
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Affiliation(s)
- Jin-Seok Lee
- Liver and Immunology Research Center, Oriental Medical Collage of Daejeon University, 22-5 Daehung-dong, Jung-gu, Daejeon, 301-724, Republic of Korea
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Abstract
The bark of the tree Terminalia arjuna (Roxb.) is widely used in Indian medicine (Ayurveda) for various cardiovascular ailments. The bark has been reported to contain several bioactive compounds. Many experimental studies have reported its antioxidant, anti-ischemic, antihypertensive, and antihypertrophic effects, which have relevance to its therapeutic potential in cardiovascular diseases in humans. Several clinical studies have reported its efficacy mostly in patients with ischemic heart disease, hypertension, and heart failure. However, a major shortcoming in all these experimental and clinical studies is the absence of phytochemical standardization of the extracts. In addition, many clinical studies are poor in terms of design and methods used for generating safety data. This review discusses how to address all these issues for a scientific validation of this medicinal plant.
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Affiliation(s)
- Subir K Maulik
- Department of Pharmacology, All India Institute of Medical Sciences, New Delhi, India.
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Shivananjappa MM, Mhasavade D, Joshi MK. Aqueous extract ofTerminalia arjunaattenuates tert-butyl hydroperoxide-induced oxidative stress in HepG2 cell model. Cell Biochem Funct 2012; 31:129-35. [DOI: 10.1002/cbf.2867] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2011] [Revised: 12/19/2011] [Accepted: 07/17/2012] [Indexed: 11/08/2022]
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Maulik SK, Prabhakar P, Dinda AK, Seth S. Genistein prevents isoproterenol-induced cardiac hypertrophy in rats. Can J Physiol Pharmacol 2012; 90:1117-25. [DOI: 10.1139/y2012-068] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Genistein, an isoflavone and a rich constituent of soy, possesses important regulatory effects on nitric oxide (NO) synthesis and oxidative stress. Transient and low release of NO by endothelial nitric oxide synthase (eNOS) has been shown to be beneficial, while high and sustained release by inducible nitric oxide synthase (iNOS) may be detrimental in pathological cardiac hypertrophy. The present study was designed to evaluate whether genistein could prevent isoproterenol-induced cardiac hypertrophy in male Wistar rats (150–200 g, 10–12 weeks old) rats. Isoproterenol (5 mg·(kg body weight)–1) was injected subcutaneously once daily for 14 days to induced cardiac hypertrophy. Genistein (0.1 and 0.2 mg·kg–1, subcutaneous injection once daily) was administered along with isoproterenol. Heart tissue was studied for myocyte size and fibrosis. Myocardial thiobarbituric acid reactive substances (TBARS), glutathione (GSH), superoxide dismutase (SOD), catalase levels, and 1-OH proline (collagen content) were also estimated. Genistein significantly prevented any isoproterenol-induced increase in heart weight to body weight ratio, left ventricular mass (echocardiographic), myocardial 1-OH proline, fibrosis, myocyte size and myocardial oxidative stress. These beneficial effects of genistein were blocked by a nonselective NOS inhibitor (L-NAME), but not by a selective iNOS inhibitor (aminoguanidine). Thus, the present study suggests that the salutary effects of genistein on isoproterenol-induced cardiac hypertrophy may be mediated through inhibition of iNOS and potentiation of eNOS activities.
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Affiliation(s)
- Subir Kumar Maulik
- Department of Pharmacology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Pankaj Prabhakar
- Department of Pharmacology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Amit Kumar Dinda
- Department of Pathology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Sandeep Seth
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi 110029, India
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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.
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Affiliation(s)
- Subir Kumar Maulik
- Department of Pharmacology, All India Institute of Medical Sciences, New Delhi, India.
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Parveen A, Babbar R, Agarwal S, Kotwani A, Fahim M. Terminalia arjuna enhances baroreflex sensitivity and myocardial function in isoproterenol-induced chronic heart failure rats. J Cardiovasc Pharmacol Ther 2011; 17:199-207. [PMID: 21828283 DOI: 10.1177/1074248411416816] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Chronic heart failure (CHF) is characterized by left ventricular (LV) dysfunction along with impaired autonomic control functions. Herbal drugs are increasingly being used in the treatment of cardiovascular disorders. The present study was designed to examine the protective effect of Terminalia arjuna (T arjuna) bark extract on LV and baroreflex function in CHF and to elucidate the possible mechanistic clues in its cardioprotective action. The baroreflex was evaluated by measuring the changes in heart rate (HR) with changes in arterial blood pressure induced by bolus injections of phenylephrine (vasoconstrictor) and sodium nitroprusside (vasodilator). T arjuna bark extract and fluvastatin were tested/administered therapeutically and prophylactically in isoproterenol-induced rat model of CHF. Fifteen days after isoproterenol administration, rats exhibited cardiac dysfunction, hypertrophy, and LV remodeling along with reduced baroreflex sensitivity. Prophylactic and therapeutic treatment with T arjuna improved cardiac functions and baroreflex sensitivity. It also attenuated hypertrophy and fibrosis of the LV. Fluvastatin treatment exerted a similar protective effect against myocardial remodeling and heart failure. Further, T arjuna and fluvastatin significantly reduced oxidative stress and inflammatory cytokine level in CHF rats. In conclusion, T arjuna exerts beneficial effect on LV functions, myocardial remodeling, and autonomic control in CHF possibly through maintaining endogenous antioxidant enzyme activities, inhibiting lipid peroxidation and cytokine levels.
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Affiliation(s)
- Adila Parveen
- Department of Physiology, Vallabhbhai Patel Chest Institute, University of Delhi, Delhi, India
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Parveen A, Babbar R, Agarwal S, Kotwani A, Fahim M. Mechanistic Clues in the Cardioprotective Effect of Terminalia Arjuna Bark Extract in Isoproterenol-Induced Chronic Heart Failure in Rats. Cardiovasc Toxicol 2010; 11:48-57. [DOI: 10.1007/s12012-010-9099-2] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Jaiswal A, Kumar S, Seth S, Dinda AK, Maulik SK. Effect of U50,488H, a κ-opioid receptor agonist on myocardial α-and β-myosin heavy chain expression and oxidative stress associated with isoproterenol-induced cardiac hypertrophy in rat. Mol Cell Biochem 2010; 345:231-40. [DOI: 10.1007/s11010-010-0577-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2010] [Accepted: 08/09/2010] [Indexed: 01/19/2023]
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