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Pires Nakama R, Felipe Dos Santos L, Berto-Pereira L, Sobral de Rossi L, Donizette Malvezi A, Isabel Lovo-Martins M, Paula Canizares Cardoso A, Mendes Dionísio de Freitas A, Cardoso Martins-Pinge M, Pinge-Filho P. Metabolic syndrome induces benefits in mice experiencing severe sepsis, comparable to the effects of low-dose aspirin pretreatment in septic mice lacking metabolic syndrome. Int Immunopharmacol 2024; 139:112694. [PMID: 39024746 DOI: 10.1016/j.intimp.2024.112694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 07/10/2024] [Accepted: 07/12/2024] [Indexed: 07/20/2024]
Abstract
BACKGROUND Sepsis is a complex condition characterized by systemic host inflammation caused by an infection. Experimental and observational studies indicate that obesity, one of the components of metabolic syndrome (MetS), or aspirin (ASA) treatment could be associated with sepsis survival. However, the effects of ASA on septic mice with MetS-induced conditions have not been explored. METHODS Swiss mice were administered monosodium glutamate (MSG) (4 mg/kg) during their first 5 days of life for MetS induction, while the control mice received an equimolar saline solution. MetS was validated in male mice on their 60th day of life. ASA treatment was administered for 15 days prior to sepsis (40 mg/kg). On the 75th day, sepsis was induced in MetS and control mice through cecal ligation and puncture (CLP). The effects of ASA on septic mice with MSG-induced MetS were assessed by determining survival rates, quantification of nitric oxide (NO), and cytokine levels in the plasma, while correlating these data with hematological, blood glucose and cardiovascular parameters. RESULTS MetS was validated by Lee-Index (3 body weight/naso-anal length×1000), hypertension, and hyperglycemia in animals receiving MSG as neonates. In control animals, severe sepsis promoted hypoglycemia, which was associated with mortality, as well as increased plasma NO levels, hypotension, hematological alterations, and elevation of proinflammatory cytokines. In contrast, MetS and pre-treatment with ASA were able to prevent sepsis-related alterations. CONCLUSIONS MetS and ASA pre-treatment provided protection against severe sepsis. However, ASA was ineffective in mice with MetS undergoing severe sepsis.
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Affiliation(s)
- Raquel Pires Nakama
- Laboratory of Experimental Immunopathology, Department of Immunology, Parasitology and General Pathology, Center for Biological Sciences, State University of Londrina, PR, Brazil
| | - Lucas Felipe Dos Santos
- Laboratory of Microorganism Molecular Biology, Department of Microbiology, Center for Biological Sciences, State University of Londrina, PR, Brazil
| | - Leonardo Berto-Pereira
- Laboratory of Cardiovascular Physiology and Physiopathology, Department of Physiological Sciences, Center for Biological Sciences, State University of Londrina, PR, Brazil
| | - Lucas Sobral de Rossi
- Laboratory of Experimental Immunopathology, Department of Immunology, Parasitology and General Pathology, Center for Biological Sciences, State University of Londrina, PR, Brazil
| | - Aparecida Donizette Malvezi
- Laboratory of Experimental Immunopathology, Department of Immunology, Parasitology and General Pathology, Center for Biological Sciences, State University of Londrina, PR, Brazil
| | - Maria Isabel Lovo-Martins
- Laboratory of Experimental Immunopathology, Department of Immunology, Parasitology and General Pathology, Center for Biological Sciences, State University of Londrina, PR, Brazil
| | - Ana Paula Canizares Cardoso
- Laboratory of Experimental Immunopathology, Department of Immunology, Parasitology and General Pathology, Center for Biological Sciences, State University of Londrina, PR, Brazil
| | - Andressa Mendes Dionísio de Freitas
- Laboratory of Pharmacology of Inflammation, Department of Physiological Sciences, Center for Biological Sciences, State University of Londrina, PR, Brazil
| | - Marli Cardoso Martins-Pinge
- Laboratory of Experimental Immunopathology, Department of Immunology, Parasitology and General Pathology, Center for Biological Sciences, State University of Londrina, PR, Brazil; Laboratory of Cardiovascular Physiology and Physiopathology, Department of Physiological Sciences, Center for Biological Sciences, State University of Londrina, PR, Brazil
| | - Phileno Pinge-Filho
- Laboratory of Experimental Immunopathology, Department of Immunology, Parasitology and General Pathology, Center for Biological Sciences, State University of Londrina, PR, Brazil; Laboratory of Microorganism Molecular Biology, Department of Microbiology, Center for Biological Sciences, State University of Londrina, PR, Brazil.
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Reginato GDS, de Jager L, Martins AB, Lucchetti BFC, de Campos BH, Lopes FNC, Araujo EJDA, Zaia CTBV, Pinge-Filho P, Martins-Pinge MC. Differential benefits of physical training associated or not with L-arginine supplementation in rats with metabolic syndrome: evaluation of cardiovascular, autonomic and metabolic parameters. Physiol Behav 2023:114251. [PMID: 37253403 DOI: 10.1016/j.physbeh.2023.114251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 04/24/2023] [Accepted: 05/26/2023] [Indexed: 06/01/2023]
Abstract
Metabolic syndrome (MetS) is characterized by endocrine-metabolic and cardiac alterations that increase the risk of cardiovascular disease, dyslipidemia, and type-2 diabetes mellitus. Dietary supplementation with L-Arginine (L-Arg) is beneficial for fat loss, while chronic aerobic exercise has several benefits in reversing cardiovascular, autonomic, and metabolic dysfunctions caused by obesity. However, the association between these two approaches has not yet been described. This study aimed to evaluate the possible benefits of physical training, with or without L-Arg supplementation, on cardiovascular, autonomic, and metabolic parameters in rats with MetS, which was induced by the subcutaneous administration of monosodium glutamate at 4 mg g-1day-1 in rats from the first to fifth day of life. Physical training on a treadmill and supplementation with L-Arg in adulthood were carried out concomitantly for 8 weeks. After this, the animals underwent femoral artery catheterization to record their cardiovascular parameters and autonomic modulation. Organs and blood were removed to measure levels of nitrite, glucose, and hepatic steatosis. In adult rats with MetS, supplementation with L-Arg in combination with physical training reduced hypertension, tachycardia, adipose tissue mass, free fatty acids, and hepatic steatosis. Supplementation with L-Arg and physical training separately was beneficial in reducing several aspects of MetS, but a combination of both was especially effective in reducing adipose tissue and hepatic steatosis. Together, the two therapies can form a good strategy to combat MetS.
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Affiliation(s)
- Gabriela de Souza Reginato
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina PR, Brazil
| | - Lorena de Jager
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina PR, Brazil
| | - Andressa Busetti Martins
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina PR, Brazil
| | | | - Blenda Hyedra de Campos
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina PR, Brazil
| | - Fernanda Novi Cortegoso Lopes
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina PR, Brazil
| | | | - Cássia Thaïs B Vieira Zaia
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina PR, Brazil
| | - Phileno Pinge-Filho
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina PR, Brazil
| | - Marli Cardoso Martins-Pinge
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina PR, Brazil.
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Hossein Zadeh Z, Najdegerami EH, Niko M, Nejati V, Ahmadi Gavlighi H. Low-molecular weight oligosaccharides from gum tragacanth ( Astragalus gossypinus) ameliorate nonalcoholic fatty liver disease (NAFLD) in Wistar male rats. Food Sci Nutr 2023; 11:765-777. [PMID: 36789034 PMCID: PMC9922153 DOI: 10.1002/fsn3.3112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 09/24/2022] [Accepted: 10/09/2022] [Indexed: 11/12/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is the most common liver disease affecting 25% of the world's population. The effects of oligosaccharides from Gum tragacanth (Astragalus gossypinus) (GT) on oxidative stress, glucose metabolism, and expression of autophagy genes were investigated in induced non-alcoholic fatty liver. Twenty-four male healthy rats were divided into four groups, Control; high-fat diet, high-fat diet + 100 mg GT oligosaccharides/kg body weight, high-fat diet + 200 mg GT oligosaccharides/kg body weight and fed with the trial diets for 70 days. At the end of the experiment, the results indicated that GT oligosaccharides affected the weight gain and liver weight in NAFLD-induced rats. In addition, the results showed that the use of GT oligosaccharides significantly decreased oxidative stress, liver injury, and hyperglycemia (p < .05) and upregulated the expression of autophagy genes in NAFLD-induced rats. Practical applications Overall, the results of the current study demonstrated that the use of GT oligosaccharides obtained from Gum tragacanth (Astragalus gossypinus) showed significant antioxidant properties and hypoglycemia in NAFLD induced rats and could be used as a useful nutritional strategy for the prevention and treatment of NAFLD.
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Affiliation(s)
| | | | - Mehdi Niko
- Department of Pathobiology and Quality Control, Artemia & Aquaculture Research InstituteUrmia UniversityUrmiaIran
| | - Vahid Nejati
- Department of Biology, Faculty of ScienceUrmia UniversityUrmiaIran
| | - Hassan Ahmadi Gavlighi
- Department of Food Science and Technology, Faculty of AgricultureTarbiat Modares UniversityTehranIran
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Gao J, Xu C, Zhang M, Liu J, Wu X, Cui C, Wei H, Peng J, Zheng R. Functional fiber enhances the effect of every-other-day fasting on insulin sensitivity by regulating the gut microecosystem. J Nutr Biochem 2022; 110:109122. [PMID: 35977666 DOI: 10.1016/j.jnutbio.2022.109122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 02/22/2022] [Accepted: 06/20/2022] [Indexed: 01/13/2023]
Abstract
Every-other-day fasting (EODF), which involves alternating days of fasting and feeding, has been reported to lower obesity, and dietary fibers can improve metabolism by altering gut microbiota. This study investigated whether the combination of functional fiber (FF) and EODF (FF-EODF) can further improve insulin sensitivity by regulating the composition of microbiota and curbing weight gain. Twenty-eight diet-induced obese (DIO) mice were randomly divided into four experimental groups (n=7): (1) ad-libitum (AL), (2) EODF, (3) 4% FF-EODF and (4) 6% FF-EODF. After exposure to a high-fat basal diet (HFD) for 12 weeks (1-12 weeks, period 1) and then to a normal chow diet (NCD) for 4 weeks (13-16 weeks, period 2). Compared with EODF alone, 6% FF-EODF treatment could significantly improve the insulin sensitivity of DIO mice without affecting their body weight during period 1(HFD), while significantly increasing satiety, energy consumption, weight, and adipose loss, and insulin sensitivity during period 2 (NCD). Meanwhile, FF-EODF showed a higher increase in short-chain fatty acids (SCFAs) and restored the proportion of induced intraepithelial lymphocytes in the intestinal epithelium compared to EODF alone. Although EODF could increase the relative abundances of Lactobacillus and Bifidobacteriumin, FF supplementation further increased the relative abundance of Lactobacillus, Bifidobacterium, and S24-7 in the intestine. This increase was positively correlated with the decrease in adiposity and insulin resistance, indicating that FF plays a key role in insulin improvement. Our study demonstrated the potential of FF-EODF in promoting insulin sensitivity and reducing body weight via beneficial regulation of gut microecosystem.
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Affiliation(s)
- Jianwei Gao
- Department of Animal Genetics and Breeding, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Chuanhui Xu
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Mengdi Zhang
- Department of Animal Genetics and Breeding, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jianhua Liu
- Department of Animal Genetics and Breeding, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Xiaoyu Wu
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Chenbin Cui
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Hongkui Wei
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jian Peng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Rong Zheng
- Department of Animal Genetics and Breeding, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China; The Cooperative Innovation Centre for Sustainable Pig Production, Wuhan, China.
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Ameliorating Effects of Bioactive Peptides Extracted from Litopenaeus vannamei Wastes on Oxidative Stress, Glucose Regulation, and Autophagy Gene Expression in Nonalcoholic Fatty Liver-Induced Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:2679634. [PMID: 36062167 PMCID: PMC9436606 DOI: 10.1155/2022/2679634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 07/06/2022] [Indexed: 11/23/2022]
Abstract
This study aimed to investigate the effect of bioactive peptides from Litopenaeus vannamei on oxidative stress, glucose regulation, and autophagy gene expression in the induced nonalcoholic fatty liver rats. Bioactive peptides used in the current study were extracted in a progressive rise in temperature (40–60°C) (GP). For this purpose, twenty-four healthy male rats (initial weight, 230.1 ± 22 g) were divided in four experimental groups including control (standard diet), HFD (high-fat diet), HFD + GP20, and 300 (high-fat diet + 20, 300 mg peptides/kg body weight). After 70 days, the results indicated that experimental treatments did not affect the body and liver weight (P > 0.05), although the higher liver weight was seen in HFD treatment. Based on these results, the use of GP peptides improved antioxidant enzymes and decreased MDA concentration, and a significant difference was observed between peptide treatments and HFD (P < 0.05). In comparison to the HFD group, significantly lower liver enzymes (ALT and AST) were seen in peptide treatments (P < 0.05). Also, the results indicated that the lowest amylase, alkaline phosphatase, glucose, insulin, HOMA-IR, and inflammation cytokines (TNF-ɑ and IL-6) were seen in peptide groups. The autophagy gene expression was measured in the liver cells, and the results showed that, unlike HFD treatment, the use of GP peptides decreased Beclin 1, Atg7, and P62 expression in male rat's livers. Overall, the results of the current study demonstrated that the use of GP peptides at low concentration shows significant hypoglycemia and antioxidant properties in nonalcoholic fatty liver-induced rats.
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Sen A, Singh A, Roy A, Mohanty S, Naik N, Kalaivani M, Ramakrishnan L. Role of endothelial colony forming cells (ECFCs) Tetrahydrobiopterin (BH4) in determining ECFCs functionality in coronary artery disease (CAD) patients. Sci Rep 2022; 12:3076. [PMID: 35197509 PMCID: PMC8866483 DOI: 10.1038/s41598-022-06758-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Accepted: 01/31/2022] [Indexed: 01/05/2023] Open
Abstract
Nitric oxide (NO.) is critical for functionality of endothelial colony forming cells (ECFCs). Dimerization of endothelial nitric oxide synthase (eNOS) is must to produce NO. and tetrahydrobiopterin (BH4) plays a crucial role in stabilizing this state. We investigated BH4 level in ECFCs and its effect on ECFCs functionality in CAD patients. Intracellular biopterin levels and ECFCs functionality in terms of cell viability, adhesion, proliferation, in vitro wound healing and angiogenesis were assessed. Guanosine Triphosphate Cyclohydrolase-1 (GTPCH-1) expression was studied in ECFCs. Serum total reactive oxygen/nitrogen species was measured and effect of nitrosative stress on ECFC's biopterins level and functionality were evaluated by treating with 3-morpholino sydnonimine (SIN-1). BH4 level was significantly lower in ECFCs from CAD patients. Cell proliferation, wound closure reflecting cellular migration as well as in vitro angiogenesis were impaired in ECFCs from CAD patients. Wound healing capacity and angiogenesis were positively correlated with ECFC's BH4. A negative effect of nitrosative stress on biopterins level and cell functionality was observed in SIN-1 treated ECFCs. ECFCs from CAD exhibited impaired functionality and lower BH4 level. Association of BH4 with wound healing capacity and angiogenesis suggest its role in maintaining ECFC's functionality. Oxidative stress may be a determinant of intracellular biopterin levels.
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Affiliation(s)
- Atanu Sen
- Department of Cardiac Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Archna Singh
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Ambuj Roy
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India
| | - Sujata Mohanty
- Centre of Excellence for Stem Cell Research, All India Institute of Medical Sciences, New Delhi, India
| | - Nitish Naik
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India
| | - Mani Kalaivani
- Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India
| | - Lakshmy Ramakrishnan
- Department of Cardiac Biochemistry, All India Institute of Medical Sciences, New Delhi, India.
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Lopes FNC, da Cunha NV, de Campos BH, Fattori V, Panis C, Cecchini R, Verri WA, Pinge-Filho P, Martins-Pinge MC. Antioxidant therapy reverses sympathetic dysfunction, oxidative stress, and hypertension in male hyperadipose rats. Life Sci 2022; 295:120405. [PMID: 35181311 DOI: 10.1016/j.lfs.2022.120405] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 02/08/2022] [Accepted: 02/11/2022] [Indexed: 10/19/2022]
Abstract
AIMS The rostral ventrolateral medulla (RVLM) is the main sympathetic output of the central nervous system to control blood pressure. Reportedly, reactive oxygen species (ROS) can increase arterial pressure, leading to hypertension. As ROS increase the sympathetic tone in RVLM and obese animals present grater oxidative stress, it would be important to note this relationship. MAIN METHODS Therefore, we evaluated the systemic and central effects (in the RVLM) of vitamin C (vit C, an antioxidant) on the redox balance and cardiovascular and autonomic profiles in hyperadipose male rats. We also evaluated the neurotransmission by L-glutamate (L-glu) and vit C in the RVLM of awake hyperadipose rats. KEY FINDINGS Our study confirmed that hyperadipose rats were hypertensive and tachycardic, presented increased sympathetic and decreased parasympathetic modulation of the heart, and had increased plasma lipoperoxidation compared with the control rats (CTR). Oral vitamin C treatment reverted cardiovascular, autonomic, and plasma redox dysfunction. Hyperadipose rats presented a higher blood pressure increase after L-glu microinjection and a lower response to vit C in the RVLM compared with the CTR group. Biochemical analysis of redox balance in RVLM punches showed that hyperadipose rats have increased NBT and T-BARS, and after treatment with vit C, the oxidative profile decreased. The antioxidative activity of vit C reduced the amount of ROS in the RVLM area that might have resulted in lowered blood pressure and sympathetic modulation. SIGNIFICANCE Our data suggest central and peripheral benefits of vit C treatment on cardiovascular, autonomic, and oxidative dysfunctions in hyperadipose animals.
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Affiliation(s)
- Fernanda Novi Cortegoso Lopes
- Departament of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Natália Veronez da Cunha
- Departament of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Blenda Hyedra de Campos
- Departament of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Victor Fattori
- Departament of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Carolina Panis
- Tumor Biology Laboratory, Health Sciences Center, State University of Western Paraná, Francisco Beltrão, Paraná, Brazil
| | - Rubens Cecchini
- Departament of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Waldiceu Aparecido Verri
- Departament of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Phileno Pinge-Filho
- Departament of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Marli Cardoso Martins-Pinge
- Departament of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil.
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Ferreira LLDM, Leão VDF, de Melo CM, Machado TDB, Amaral ACF, da Silva LL, Simas NK, Muzitano MF, Leal ICR, Raimundo JM. Ethyl Acetate Fraction and Isolated Phenolics Derivatives from Mandevilla moricandiana Identified by UHPLC-DAD-ESI-MS n with Pharmacological Potential for the Improvement of Obesity-Induced Endothelial Dysfunction. Pharmaceutics 2021; 13:pharmaceutics13081173. [PMID: 34452134 PMCID: PMC8401510 DOI: 10.3390/pharmaceutics13081173] [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: 06/30/2021] [Revised: 07/21/2021] [Accepted: 07/26/2021] [Indexed: 01/11/2023] Open
Abstract
Endothelial dysfunction in obesity plays a key role in the development of cardiovascular diseases, and it is characterized by increased vascular tonus and oxidative stress. Thus, this study aimed to investigate the vasodilatory and antioxidant activities of Mandevilla moricandiana ethyl acetate fraction and subfractions. Vascular effects were investigated on aorta isolated from control and monosodium glutamate (MSG) induced-obese Wistar rats, and antioxidant activity was assessed by 2,2-diphenyl-1-picrylhydrazyl (DPPH) and oxygen radical absorbance capacity (ORAC) methods. The ethyl acetate fraction (MMEAF) induced a concentration-dependent vasodilation on aortic rings through the NO pathway, with the involvement of histamine H1 and estrogen ERα receptors and showed potent antioxidant activity. In aorta of MSG obese rats, maximal relaxation to acetylcholine was increased in the presence of MMEAF (3 µg/mL), indicating that MMEAF ameliorated obesity-induced endothelial dysfunction. Quercetin and kaempferol aglycones and their correspondent glycosides, as well as caffeoylquinic acid derivatives, A-type procyanidin trimer, ursolic and oleanolic triterpenoid acids were identified in subfractions from MMEAF and seem to be the metabolites responsible for the vascular and antioxidant activities of this fraction.
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Affiliation(s)
- Leticia L. D. M. Ferreira
- Pharmacology of Bioactive Products Research Group, Federal University of Rio de Janeiro—Macaé Campus, Macaé 27930-560, RJ, Brazil; (L.L.D.M.F.); (V.d.F.L.); (C.M.d.M.); (L.L.d.S.)
- Laboratory of Natural Products and Biological Assays, Pharmacy Faculty, Health Sciences Center, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil;
| | - Valéria de F. Leão
- Pharmacology of Bioactive Products Research Group, Federal University of Rio de Janeiro—Macaé Campus, Macaé 27930-560, RJ, Brazil; (L.L.D.M.F.); (V.d.F.L.); (C.M.d.M.); (L.L.d.S.)
| | - Cinthya M. de Melo
- Pharmacology of Bioactive Products Research Group, Federal University of Rio de Janeiro—Macaé Campus, Macaé 27930-560, RJ, Brazil; (L.L.D.M.F.); (V.d.F.L.); (C.M.d.M.); (L.L.d.S.)
| | - Thelma de B. Machado
- LAQV-REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal;
- Faculty of Pharmacy, Federal Fluminense University, Niterói 24241-000, RJ, Brazil
| | - Ana Claudia F. Amaral
- Laboratory of Medicinal Plants and Derivatives, Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro 21041-250, RJ, Brazil;
| | - Leandro L. da Silva
- Pharmacology of Bioactive Products Research Group, Federal University of Rio de Janeiro—Macaé Campus, Macaé 27930-560, RJ, Brazil; (L.L.D.M.F.); (V.d.F.L.); (C.M.d.M.); (L.L.d.S.)
| | - Naomi K. Simas
- Laboratory of Natural Products and Biological Assays, Pharmacy Faculty, Health Sciences Center, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil;
| | - Michelle F. Muzitano
- Laboratory of Bioactive Products, Federal University of Rio de Janeiro—Macaé Campus, Macaé 27933-378, RJ, Brazil;
| | - Ivana C. R. Leal
- Laboratory of Natural Products and Biological Assays, Pharmacy Faculty, Health Sciences Center, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil;
- Correspondence: (I.C.R.L.); (J.M.R.); Tel.: +55-21965620428 (I.C.R.L.); +55-2221414019 (J.M.R.)
| | - Juliana M. Raimundo
- Pharmacology of Bioactive Products Research Group, Federal University of Rio de Janeiro—Macaé Campus, Macaé 27930-560, RJ, Brazil; (L.L.D.M.F.); (V.d.F.L.); (C.M.d.M.); (L.L.d.S.)
- Correspondence: (I.C.R.L.); (J.M.R.); Tel.: +55-21965620428 (I.C.R.L.); +55-2221414019 (J.M.R.)
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Nayan SI, Chowdhury FI, Akter N, Rahman MM, Selim S, Saffoon N, Khan F, Subhan N, Hossain M, Ahmed KS, Hossain H, Haque MA, Alam MA. Leaf powder supplementation of Senna alexandrina ameliorates oxidative stress, inflammation, and hepatic steatosis in high-fat diet-fed obese rats. PLoS One 2021; 16:e0250261. [PMID: 33878116 PMCID: PMC8057619 DOI: 10.1371/journal.pone.0250261] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 04/01/2021] [Indexed: 11/20/2022] Open
Abstract
Obesity is an enduring medical issue that has raised concerns around the world. Natural plant extracts have shown therapeutic potential in preventing oxidative stress and inflammation related to obesity complications. In this study, Senna alexandrina Mill. leaves were utilized to treat high-fat diet-related metabolic disorders and non-alcoholic fatty liver diseases. Plasma biochemical assays were conducted to determine the lipid profiles and oxidative stress parameters, and the gene expression of antioxidant enzymes and inflammatory mediators was measured. Histological stained livers of high-fat diet-fed rats were observed. S. alexandrina leaf powder supplementation prevented the increase in cholesterol and triglyceride levels in high-fat diet-fed rats. Moreover, S. alexandrina leaves also reduced lipid peroxidation and nitric oxide production in these rats. Prevention of oxidative stress by S. alexandrina leaf supplementation in high-fat diet-fed rats is regulated by enhancing the antioxidant enzyme activity, followed by the restoration of corresponding gene expressions, such as NRF-2, HO-1, SOD, and CAT. Histological staining provides further evidence that S. alexandrina leaf supplementation prevents inflammatory cell infiltration, lipid droplet deposition, and fibrosis in the liver of high-fat diet-fed rats. Furthermore, this investigation revealed that S. alexandrina leaf supplementation controlled non-alcoholic fatty liver disease by modulating the expression of fat metabolizing enzymes in high-fat diet-fed rats. Therefore, S. alexandrina leaf supplementation inhibits fatty liver inflammation and fibrosis, suggesting its usefulness in treating non-alcoholic steatohepatitis. Thus, this natural leaf extract has potential in treatment of obesity related liver dysfunction.
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Affiliation(s)
- Shariful Islam Nayan
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
| | | | - Noushin Akter
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
| | - Md Mizanur Rahman
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
- Department of Pharmacy, International Islamic University Chittagong, Chittagong, Bangladesh
| | - Saima Selim
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
| | - Nadia Saffoon
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
| | - Ferdous Khan
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
| | - Nusrat Subhan
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
| | - Maqsud Hossain
- NSU Genome Research Institute (NGRI), North South University, Dhaka, Bangladesh
| | - K. Shahin Ahmed
- BCSIR Laboratories, Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
| | - Hemayet Hossain
- BCSIR Laboratories, Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
| | - Md Areeful Haque
- Department of Pharmacy, International Islamic University Chittagong, Chittagong, Bangladesh
- * E-mail: , (MAA); , (MAH)
| | - Md Ashraful Alam
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
- * E-mail: , (MAA); , (MAH)
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10
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C-type natriuretic peptide-induced relaxation through cGMP-dependent protein kinase and SERCA activation is impaired in two kidney-one clip rat aorta. Life Sci 2021; 272:119223. [PMID: 33610574 DOI: 10.1016/j.lfs.2021.119223] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/28/2021] [Accepted: 02/09/2021] [Indexed: 11/22/2022]
Abstract
AIMS Hypertension underlies endothelial dysfunction, and activation of vasorelaxation signaling with low dependence on nitric oxide (NO) represents a good alternative for vascular modulation. C-type natriuretic peptide (CNP) causes relaxation by increasing cyclic guanosine 3',5'-monophosphate (cGMP) or Gi-protein activation through its natriuretic peptide receptor-B or -C, respectively. We have hypothesized that CNP could exerts its effects and could overcome endothelial dysfunction in two kidney-one clip (2K-1C) hypertensive rat aorta. Here, we investigate the intracellular signaling involved in CNP effects in hypertension. MATERIALS AND METHODS The 2K-1C hypertension was induced in male Wistar rats (200 g). CNP-induced vascular relaxation and cGMP production were investigated in rat thoracic aortas. The natriuretic peptide receptor-B and -C localization was evaluated by immunofluorescence. Calcium mobilization was assessed in endothelial cells from rat aortas. KEY FINDINGS CNP induced similar relaxation in normotensive and 2K-1C hypertensive rat aortas, which increased after endothelium removal. CNP-induced relaxation involved natriuretic peptide receptor-B and -C activation in 2K-1C rats. Nitric oxide synthase (NOS) and soluble guanylyl cyclase (sGC) counter-regulated CNP-particulate GC (pGC) activation in aortas. CNP reduced endothelial calcium and increased cGMP production, which was lower in 2K-1C. CNP-induced cGMP-dependent protein kinase (PKG) and sarcoplasmic/endoplasmic reticulum Ca2+-ATPase (SERCA) activation was impaired in 2K-1C rat aorta. SIGNIFICANCE Our results indicated CNP triggered relaxation through its natriuretic peptide receptor-B and -C in 2K-1C rat aortas, and that CNP-induced relaxation overcomes endothelial dysfunction in hypertension. In addition, NOS and sGC activities counter-regulate CNP-pGC activation to induce vascular relaxation.
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11
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Schulz M, Seraglio SKT, Brugnerotto P, Gonzaga LV, Costa ACO, Fett R. Composition and potential health effects of dark-colored underutilized Brazilian fruits – A review. Food Res Int 2020; 137:109744. [DOI: 10.1016/j.foodres.2020.109744] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 09/07/2020] [Accepted: 09/20/2020] [Indexed: 12/14/2022]
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12
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Fouda YB, Ngo Lemba Tom E, Atsamo AD, Bonabe C, Dimo T. Effects of stem bark aqueous extract of Fagara tessmannii Engl (Rutaceae) on cardiovascular risks related to monosodium glutamate-induced obesity in rat: In vivo and in vitro assessments. JOURNAL OF ETHNOPHARMACOLOGY 2020; 260:112972. [PMID: 32446928 DOI: 10.1016/j.jep.2020.112972] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 04/22/2020] [Accepted: 05/09/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Fagara tessmannii is a shrub of the African rainforests in South-West, Centre, South and East provinces in Cameroon. It is used in traditional medicine for the treatment of tumors, swellings, inflammation, gonorrhoea, schistosomiasis, antifungal, heart diseases and as anti-hypertensive. AIM OF THE STUDY We investigated the potential effects of F. tessmannii on cardiovascular risk related to monosodium glutamate-induced obesity. MATERIALS AND METHODS Monosodium glutamate (MSG, 4 mg/g/day) was injected subcutaneously to newborn Wistar rats for the four consecutive first days of their life and on the 6th, 8th and 10th day after birth. After 21 weeks, obese rats were treated orally with F. tessmannii (100 or 200 mg/kg/day), orlistat (10 mg/kg/day) or telmisartan (10 mg/kg/day) for 6 weeks. Body weight, obesity, body mass index (BMI), Lee index, insulin sensitivity and glucose tolerance, blood pressure, lipid profile as a Coronary Risk Index (CRI), and reactivity of isolated thoracic aorta were evaluated. RESULTS In addition to significantly decrease body weight (17.60% and 20.34%), BMI, Lee's index, retroperitoneal fat, total adiposity, and coronary risk indicators, F. tessmannii has significantly decreased insulin resistance and hyperglycemia and high blood pressure observed in MSG-obese rats. The high contractility to phenylephrine as well as the hypersensitivity to sodium nitroprusside (a nitric oxide-donor), observed in MSG aortic rings were significantly reduced by the F. tessmannii extract. Enhanced serum Na+ and Cl- levels and decreased K+ observed in obese rats were also significantly reversed after F. tessmannii treatment. CONCLUSIONS F. tessmannii fights against obesity and associated cardiovascular risks by modulating production and vascular responsiveness to vasoactive factors, monitoring premature aging. F. tessmannii promotes the loss of ectopic fat and other fatty tissues, the sensitivity of the peripherical tissues to insulin, the energy expenditure and the renovascular decompression and regulates ions movement which prevents hypertension.
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Affiliation(s)
- Yannick Bekono Fouda
- Department of Animal Biology and Physiology, Laboratory of Animal Physiology, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon.
| | - Esther Ngo Lemba Tom
- Department of Biological Sciences, Higher Teachers' Training College, University of Yaoundé I, P.O. Box 47, Yaoundé, Cameroon.
| | - Albert Donatien Atsamo
- Department of Animal Biology and Physiology, Laboratory of Animal Physiology, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon.
| | - Christian Bonabe
- Department of Biological Sciences, Faculty of Sciences, University of Ngaoundéré, P.O. Box 454, Ngaoundéré, Cameroon.
| | - Théophile Dimo
- Department of Animal Biology and Physiology, Laboratory of Animal Physiology, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon.
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de Campos BH, de Jager L, Reginato GS, Pereira RS, Crestani CC, Pinge-Filho P, Martins-Pinge MC. Cardiovascular evaluation of female rats with 6-OHDA-induced parkinsonism: Possible protection by ovarian hormones and participation of nitric oxide. Life Sci 2020; 259:118259. [PMID: 32795538 DOI: 10.1016/j.lfs.2020.118259] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 08/05/2020] [Accepted: 08/09/2020] [Indexed: 02/05/2023]
Abstract
AIMS Parkinson's disease (PD) is a neurological disorder caused by environmental and genetic factors, characterized by the death of dopaminergic neurons of the substantia nigra pars compacta (SNpc), leading to a decrease of dopamine in the striatum. In addition to motor symptoms, PD has several abnormalities, among which are cardiovascular changes, such as orthostatic and postprandial hypotension, and blood pressure lability. Studies demonstrate gender differences in PD pathogenesis, indicating that female hormones have a protective role against disease development. However, no studies examining cardiovascular changes in a female rat model of parkinsonism exist. MAIN METHODS Wistar female rats were subjected to ovariectomy (OVX) or sham surgery. After seven days, these animals were subjected to bilateral infusion of 6-hydroxydopamine (6-OHDA) or vehicle solution in their SNpc. On the 14th experimental day, a femoral artery catheterization was performed to record cardiovascular parameters after 24 h in conscious state. Analyses of cardiovascular variability and spontaneous baroreflex were performed. The nitrite (NO) concentration in the heart, thoracic aorta, abdominal aorta, and plasma was measured. KEY FINDINGS The sham-6-OHDA group had no decrease in the mean arterial pressure compared to sham-saline group, whereas the OVX-6-OHDA group presented a baseline decrease in comparison to sham-6-OHDA. The OVX-6-OHDA group showed an NO increase in the heart and abdominal aorta, whereas the sham-6-OHDA group did not. The very low frequency variability component decreased in the sham-6-OHDA but not in the OVX-6-OHDA group. SIGNIFICANCE We suggest a cardiovascular protection by ovarian hormones in PD with a possible NO involvement.
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Affiliation(s)
- Blenda Hyedra de Campos
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Lorena de Jager
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Gabriela Souza Reginato
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Rito Santo Pereira
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Carlos César Crestani
- Department of Natural Active Principles and Toxicology, Faculty of Pharmaceutical Sciences, São Paulo State University, Araraquara, SP, Brazil
| | - Phileno Pinge-Filho
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Marli Cardoso Martins-Pinge
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil.
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14
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Lucchetti BFC, Boaretto N, Lopes FNC, Malvezi AD, Lovo-Martins MI, Tatakihara VLH, Fattori V, Pereira RS, Verri WA, de Almeida Araujo EJ, Pinge-Filho P, Martins-Pinge MC. Metabolic syndrome agravates cardiovascular, oxidative and inflammatory dysfunction during the acute phase of Trypanosoma cruzi infection in mice. Sci Rep 2019; 9:18885. [PMID: 31827186 PMCID: PMC6906468 DOI: 10.1038/s41598-019-55363-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 11/26/2019] [Indexed: 12/20/2022] Open
Abstract
We evaluated the influence of metabolic syndrome (MS) on acute Trypanosoma cruzi infection. Obese Swiss mice, 70 days of age, were subjected to intraperitoneal infection with 5 × 102 trypomastigotes of the Y strain. Cardiovascular, oxidative, inflammatory, and metabolic parameters were evaluated in infected and non-infected mice. We observed higher parasitaemia in the infected obese group (IOG) than in the infected control group (ICG) 13 and 15 days post-infection. All IOG animals died by 19 days post-infection (dpi), whereas 87.5% of the ICG survived to 30 days. Increased plasma nitrite levels in adipose tissue and the aorta were observed in the IOG. Higher INF-γ and MCP-1 concentrations and lower IL-10 concentrations were observed in the IOG compared to those in the ICG. Decreased insulin sensitivity was observed in obese animals, which was accentuated after infection. Higher parasitic loads were found in adipose and hepatic tissue, and increases in oxidative stress in cardiac, hepatic, and adipose tissues were characteristics of the IOG group. Thus, MS exacerbates experimental Chagas disease, resulting in greater damage and decreased survival in infected animals, and might be a warning sign that MS can influence other pathologies.
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Affiliation(s)
- Bruno Fernando Cruz Lucchetti
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
- Department of Physiotherapy, University Center of Araguaia Valley, Barra do Garças, MT, Brazil
| | - Natalia Boaretto
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Fernanda Novi Cortegoso Lopes
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Aparecida Donizette Malvezi
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Maria Isabel Lovo-Martins
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Vera Lúcia Hideko Tatakihara
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Victor Fattori
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Rito Santo Pereira
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Waldiceu Aparecido Verri
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | | | - Phileno Pinge-Filho
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Marli Cardoso Martins-Pinge
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil.
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15
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Turossi Amorim ED, de Jager L, Martins AB, Rodrigues AT, Cruz Lucchetti BF, Ariza D, Pinge‐Filho P, Crestani CC, Uchoa ET, Martins‐Pinge MC. Glutamate and GABA neurotransmission are increased in paraventricular nucleus of hypothalamus in rats induced to 6-OHDA parkinsonism: Involvement of nNOS. Acta Physiol (Oxf) 2019; 226:e13264. [PMID: 30716212 DOI: 10.1111/apha.13264] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 01/24/2019] [Accepted: 01/30/2019] [Indexed: 02/02/2023]
Abstract
AIM Parkinson's disease (PD) is a progressive neurodegenerative disease that manifests itself clinically after reaching an advanced pathological stage. Besides motor signals, PD patients present cardiovascular and autonomic alterations. Recent data showed that rats induced to Parkinsonism by 6-hydroxydopamine (6-OHDA) administration in the substantia nigra pars compacta (SNpc) showed lower mean arterial pressure (MAP) and heart rate (HR), as reduction in sympathetic modulation. The paraventricular nucleus of the hypothalamus (PVN) is an important site for autonomic and cardiovascular control, and amino acid neurotransmission has a central role. We evaluate PVN amino acid neurotransmission in cardiovascular and autonomic effects of 6-OHDA Parkinsonism. METHODS Male Wistar rats were submitted to guide cannulas implantation into the PVN. 6-OHDA or sterile saline (sham) was administered bilaterally in the SNpc. After 7 days, cardiovascular recordings in conscious state was performed. RESULTS Bicuculline promoted an increase in MAP and HR in sham group and exacerbated those effects in 6-OHDA group. NBQX (non-NMDA inhibitor) did not promote changes in sham as in 6-OHDA group. On the other hand, PVN microinjection of LY235959 (NMDA inhibitor) in sham group did not induced cardiovascular alterations, but decreased MAP and HR in 6-OHDA group. Compared to Sham group, 6-OHDA lesion increased the number of neuronal nitric oxide synthase (nNOS)-immunoreactive neurons in the PVN and, nNOS inhibition promoted higher increases in MAP and HR. CONCLUSION Our data suggest that the decreased baseline blood pressure and heart rate in animals with Parkinsonism may be due to an increased GABAergic tone via nNOS in the PVN.
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Affiliation(s)
- Eric Diego Turossi Amorim
- Departament of Physiological Sciences, Center of Biological Sciences State University of Londrina Londrina Brazil
| | - Lorena de Jager
- Departament of Physiological Sciences, Center of Biological Sciences State University of Londrina Londrina Brazil
| | - Andressa Busetti Martins
- Departament of Physiological Sciences, Center of Biological Sciences State University of Londrina Londrina Brazil
| | - Ananda Totti Rodrigues
- Departament of Physiological Sciences, Center of Biological Sciences State University of Londrina Londrina Brazil
| | | | - Deborah Ariza
- Departament of Physiological Sciences, Center of Biological Sciences State University of Londrina Londrina Brazil
| | - Phileno Pinge‐Filho
- Departament of Pathological Sciences, Center of Biological Sciences State University of Londrina Londrina Brazil
| | - Carlos Cesar Crestani
- Laboratory of Pharmacology, School of Pharmaceutical Sciences UNESP ‐ Univ Estadual Paulista Araraquara Brazil
| | - Ernane Torres Uchoa
- Departament of Physiological Sciences, Center of Biological Sciences State University of Londrina Londrina Brazil
| | - Marli Cardoso Martins‐Pinge
- Departament of Physiological Sciences, Center of Biological Sciences State University of Londrina Londrina Brazil
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16
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Yang L, Ma J, Tan Y, Zheng Q, Dong M, Guo W, Xiong L, Yang J, Ren J. Cardiac-specific overexpression of metallothionein attenuates L-NAME-induced myocardial contractile anomalies and apoptosis. J Cell Mol Med 2019; 23:4640-4652. [PMID: 31104354 PMCID: PMC6584723 DOI: 10.1111/jcmm.14375] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 03/14/2019] [Accepted: 04/09/2019] [Indexed: 01/21/2023] Open
Abstract
Hypertension contributes to the high cardiac morbidity and mortality. Although oxidative stress plays an essential role in hypertensive heart diseases, the mechanism remains elusive. Transgenic mice with cardiac overexpression of metallothionein, a heavy metal‐binding scavenger, were challenged with NG‐nitro‐L‐arginine methyl ester (L‐NAME) for 14 days prior to measurement of myocardial contractile and intracellular Ca2+ anomalies as well as cell signalling mechanisms using Western blot and immunofluorescence analysis. L‐NAME challenge elicited hypertension, macrophage infiltration, oxidative stress, inflammation and cardiac dysfunction manifested as increased proinflammatory macrophage marker F4/80, interleukin‐1β (IL‐1β), intracellular O2- production, LV end systolic and diastolic diameters as well as depressed fractional shortening. L‐NAME treatment reduced mitochondrial membrane potential (MMP), impaired cardiomyocyte contractile and intracellular Ca2+ properties as evidenced by suppressed peak shortening, maximal velocity of shortening/relengthening, rise in intracellular Ca2+, along with elevated baseline and peak intracellular Ca2+. These unfavourable mechanical changes and decreased MMP (except blood pressure and macrophage infiltration) were alleviated by overexpression of metallothionein. Furthermore, the apoptosis markers including BAD, Bax, Caspase 9, Caspase 12 and cleaved Caspase 3 were up‐regulated while the anti‐apoptotic marker Bcl‐2 was decreased by L‐NAME treatment. Metallothionein transgene reversed L‐NAME‐induced changes in Bax, Bcl‐2, BAD phosphorylation, Caspase 9, Caspase 12 and cleaved Caspase 3. Our results suggest that metallothionein protects against L‐NAME‐induced myocardial contractile anomalies in part through inhibition of apoptosis.
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Affiliation(s)
- Lifang Yang
- Department of Anesthesiology, Xi'an Children Hospital, Xi'an, China.,Center for Cardiovascular Research and Alternative Medicine, University of Wyoming, Laramie, Wyoming
| | - Jipeng Ma
- Center for Cardiovascular Research and Alternative Medicine, University of Wyoming, Laramie, Wyoming.,Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Ying Tan
- Center for Cardiovascular Research and Alternative Medicine, University of Wyoming, Laramie, Wyoming.,Department of Emergency Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Qijun Zheng
- Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Maolong Dong
- Center for Cardiovascular Research and Alternative Medicine, University of Wyoming, Laramie, Wyoming.,Department of Emergency Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Burns, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Wei Guo
- Department of Animal Sciences, University of Wyoming, Laramie, Wyoming
| | - Lize Xiong
- Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Jian Yang
- Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Jun Ren
- Center for Cardiovascular Research and Alternative Medicine, University of Wyoming, Laramie, Wyoming
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Prevalence of endothelial nitric oxide synthase (ENOS) gene G894T polymorphism and its association with hypertension: a population-based study with Brazilian women. ACTA ACUST UNITED AC 2019; 4:e63-e73. [PMID: 31211272 PMCID: PMC6549039 DOI: 10.5114/amsad.2019.84539] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 03/18/2019] [Indexed: 11/29/2022]
Abstract
Introduction Hypertension is one of the most prevalent diseases in the world, accounting for millions of deaths each year. The reduction in the concentration of nitric oxide (NO) produced by the catalysis of endothelial nitric oxide synthase (eNOS) is associated with higher blood pressure (BP) levels. This reduction might be because of genetic polymorphisms. This study investigated the prevalence of the eNOS gene G894T polymorphism in women from northeast Brazil and its association with hypertension. Material and methods This cross-sectional study included 810 women (aged 19–49 years). Sociodemographic, health, anthropometric, and BP data were collected. Hypertension was defined according to the following criteria: systolic BP ≥ 140 mm Hg, diastolic BP ≥ 90 mm Hg, the regular use of antihypertensive medication, or some combination thereof. Epithelial cells from the cheek mucosa were obtained for DNA extraction. Genotyping was performed via real-time PCR. The measure of association was the prevalence ratio (PR) and its 95% CI as calculated via Poisson regression. Results The frequencies of the GG, GT, and TT genotypes were 57.1%, 35.7%, and 7.2%, respectively. For each of these genotypes, the prevalence of hypertension in women was 17.9%, 23.6%, and 34.4%, respectively. Relative to the GG genotype, the PRs after adjusting for cofounding factors were 1.24 (95% CI: 0.95–1.61, p = 0.11) for GT and 1.76 (95% CI: 1.16–2.67, p < 0.01) for TT. Conclusions The T allele of the G894T polymorphisms is associated with hypertension in women. This may have implications for prevention and treatment.
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High Carbohydrate High Fat Diet Induced Hepatic Steatosis and Dyslipidemia Were Ameliorated by Psidium guajava Leaf Powder Supplementation in Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:1897237. [PMID: 30854003 PMCID: PMC6378023 DOI: 10.1155/2019/1897237] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 11/15/2018] [Accepted: 12/27/2018] [Indexed: 12/23/2022]
Abstract
Psidium guajava leaf is reported to contain many bioactive polyphenols which play an important role in the prevention and treatment of various diseases. Our investigation aimed to study the effect of Psidium guajava leaf powder supplementation on obesity and liver status by using experimental rats. To study the effects of guava leaf supplementation in high fat diet induced obesity, rats were randomly divided into four experimental groups (n=7), control (group I), control + guava leaf (group II), HCHF (group III), and HCHF + guava leaf (group IV). At the end of the experimental period (56 days), glucose intolerance, liver enzymes activities, antioxidant enzymes activities, and lipid and cholesterol profiles were evaluated. Our results revealed that guava leaf powder supplementation showed a significant reduction in fat deposition in obese rats. Moreover, liver enzyme functions were increased in high fat diet fed rats compared to the control rats significantly which were further ameliorated by guava leaf powder supplementation in high fat diet fed rats. High fat diet feeding also decreased the antioxidant enzyme functions and increased the lipid peroxidation products compared to the control rats. Guava leaf powder supplementation in high fat diet fed rats reduced the oxidative stress markers and reestablished antioxidant enzyme system in experimental animals. Guava leaf powder supplementation in high fat diet fed rats also showed a relative decrease in inflammatory cells infiltration and collagen deposition in the liver compared to the high fat diet fed rats. The present study suggests that the supplementation of guava leaf powder prevents obesity, improves glucose intolerance, and decreases inflammation and oxidative stress in liver of high carbohydrate high fat diet fed rats.
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The toxic effects of monosodium glutamate (MSG) - The involvement of nitric oxide, prostanoids and potassium channels in the reactivity of thoracic arteries in MSG-obese rats. Toxicol Appl Pharmacol 2018; 359:62-69. [PMID: 30244120 DOI: 10.1016/j.taap.2018.09.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Revised: 08/28/2018] [Accepted: 09/15/2018] [Indexed: 12/30/2022]
Abstract
We investigated the potential effects of monosodium glutamate (MSG)-induced obesity with regards to nitric oxide and prostanoid production, as well as potassium channel function, in rat thoracic arteries. Newborn male Wistar rats were injected intraperitoneally with typically reported MSG (4.0 mg/g) once daily for 4 consecutive days. At 90 days postnatal, the rats were sacrificed and the thoracic aortas were evaluated for vascular responses and for prostanoid production. Nitric oxide was studied with calcium ionophore (A23187), acetylcholine (ACh) and sodium nitroprusside (SNP). The release of prostanoids was measured under basal and ACh-stimulated conditions, and the vasomotor effect of exogenous thromboxane A2 mimetic, U46619 was assessed. Potassium channel activities were analyzed using an NS1619 opener for BKCa channels and pinacidil for KATP channels. Arteries from MSG-obese rats exhibited a reduced maximal contraction to potassium chloride and hyper-responsiveness to U46619, suggesting that MSG also alters the responsiveness of vascular smooth muscles. The endothelium-dependent relaxation to ACh and A23817 was attenuated, suggesting low nitric oxide bioavailability. The hypersensitivity of arteries to an exogenous nitric oxide donor, SNP, occurred. The secondary contraction to A23817 was augmented, suggesting increased activation of the prostanoid receptor. The prostanoid release was increased in both basal- and acetylcholine-stimulated rings. In addition, down-regulation of KATP and BKCa channels influenced hyperpolarizing mechanisms. Our findings suggest that increased prostanoid production and hypersensitivity to thromboxane A2 together with down-regulation of potassium channels and low nitric oxide bioavailability may contribute to the increase in blood pressure found in adult MSG-obese male rats.
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20
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Castardo-de-Paula JC, de Campos BH, de Jager L, Amorim EDT, Zanluqui NG, de Farias CC, Higachi L, Pinge-Filho P, Barbosa DS, Martins-Pinge MC. Effects of Inducible Nitric Oxide Synthase Inhibition on Cardiovascular Risk of Adult Endotoxemic Female Rats: Role of Estrogen. Front Physiol 2018; 9:1020. [PMID: 30108513 PMCID: PMC6079304 DOI: 10.3389/fphys.2018.01020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 07/10/2018] [Indexed: 01/23/2023] Open
Abstract
Aim: Autonomic modulation responds to ovarian hormones and estrogen increases nitric oxide bioavailability. Also, females have minor susceptibility to sepsis and a higher survival rate. However, few studies have evaluated the role of estrogen in cardiovascular, autonomic, and oxidative parameters during initial endotoxemia and under inducible nitric oxide synthase (iNOS) inhibition in female rats. Methods: Female wistar rats were subjected to ovariectomy and divided into three groups: OVX (ovariectomized), OVX+E (OVX plus daily estradiol) and SHAM (false surgery). After 8 weeks, mean arterial pressure (MAP) and heart rate (HR) were recorded in non-anesthetized catheterized rats, before and after intravenous LPS injection, preceded by S-methylisothiourea sulfate (SMT) injection, or sterile saline. Cardiovascular recordings underwent spectral analysis for evaluation of autonomic modulation. Two hours after LPS, plasma was collected to assess total radical-trapping antioxidant (TRAP), nitrite levels (NO2), lipoperoxidation (LOOH), and paraoxonase 1 (PON1) activity. Results: Two hours after LPS, females treated with SMT presented a decrease of MAP, when compared to saline-LPS groups. At this same time, all SMT+LPS groups presented an increase of sympathetic and a decrease of parasympathetic modulation of HR. Two hours after saline+LPS, OVX presented decreased total radical-trapping antioxidant (TRAP) compared to SHAM. When treated with SMT+LPS, OVX did not altered TRAP, while estradiol reduced LOOH levels. Conclusion: iNOS would be responsible for sympathetic inhibition and consumption of antioxidant reserves of females during endotoxemia, since iNOS is inhibited, treatment with estradiol could be protective in inflammatory challenges.
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Affiliation(s)
| | - Blenda H de Campos
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, Brazil
| | - Lorena de Jager
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, Brazil
| | - Eric D T Amorim
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, Brazil
| | - Nágela G Zanluqui
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, Brazil
| | - Carine C de Farias
- Department of Pathology, Clinical and Toxicological Analysis, Center of Health Sciences, University Hospital, State University of Londrina, Londrina, Brazil
| | - Luciana Higachi
- Department of Pathology, Clinical and Toxicological Analysis, Center of Health Sciences, University Hospital, State University of Londrina, Londrina, Brazil
| | - Phileno Pinge-Filho
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, Brazil
| | - Décio S Barbosa
- Department of Pathology, Clinical and Toxicological Analysis, Center of Health Sciences, University Hospital, State University of Londrina, Londrina, Brazil
| | - Marli C Martins-Pinge
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, Brazil
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Endothelial modulation of a nitric oxide donor complex-induced relaxation in normotensive and spontaneously hypertensive rats. Life Sci 2018; 201:130-140. [DOI: 10.1016/j.lfs.2018.03.055] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 03/14/2018] [Accepted: 03/27/2018] [Indexed: 12/29/2022]
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Bellinger DL, Lorton D. Sympathetic Nerve Hyperactivity in the Spleen: Causal for Nonpathogenic-Driven Chronic Immune-Mediated Inflammatory Diseases (IMIDs)? Int J Mol Sci 2018; 19:ijms19041188. [PMID: 29652832 PMCID: PMC5979464 DOI: 10.3390/ijms19041188] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Revised: 04/05/2018] [Accepted: 04/05/2018] [Indexed: 12/21/2022] Open
Abstract
Immune-Mediated Inflammatory Diseases (IMIDs) is a descriptive term coined for an eclectic group of diseases or conditions that share common inflammatory pathways, and for which there is no definitive etiology. IMIDs affect the elderly most severely, with many older individuals having two or more IMIDs. These diseases include, but are not limited to, type-1 diabetes, obesity, hypertension, chronic pulmonary disease, coronary heart disease, inflammatory bowel disease, and autoimmunity, such as rheumatoid arthritis (RA), Sjőgren's syndrome, systemic lupus erythematosus, psoriasis, psoriatic arthritis, and multiple sclerosis. These diseases are ostensibly unrelated mechanistically, but increase in frequency with age and share chronic systemic inflammation, implicating major roles for the spleen. Chronic systemic and regional inflammation underlies the disease manifestations of IMIDs. Regional inflammation and immune dysfunction promotes targeted end organ tissue damage, whereas systemic inflammation increases morbidity and mortality by affecting multiple organ systems. Chronic inflammation and skewed dysregulated cell-mediated immune responses drive many of these age-related medical disorders. IMIDs are commonly autoimmune-mediated or suspected to be autoimmune diseases. Another shared feature is dysregulation of the autonomic nervous system and hypothalamic pituitary adrenal (HPA) axis. Here, we focus on dysautonomia. In many IMIDs, dysautonomia manifests as an imbalance in activity/reactivity of the sympathetic and parasympathetic divisions of the autonomic nervous system (ANS). These major autonomic pathways are essential for allostasis of the immune system, and regulating inflammatory processes and innate and adaptive immunity. Pathology in ANS is a hallmark and causal feature of all IMIDs. Chronic systemic inflammation comorbid with stress pathway dysregulation implicate neural-immune cross-talk in the etiology and pathophysiology of IMIDs. Using a rodent model of inflammatory arthritis as an IMID model, we report disease-specific maladaptive changes in β₂-adrenergic receptor (AR) signaling from protein kinase A (PKA) to mitogen activated protein kinase (MAPK) pathways in the spleen. Beta₂-AR signal "shutdown" in the spleen and switching from PKA to G-coupled protein receptor kinase (GRK) pathways in lymph node cells drives inflammation and disease advancement. Based on these findings and the existing literature in other IMIDs, we present and discuss relevant literature that support the hypothesis that unresolvable immune stimulation from chronic inflammation leads to a maladaptive disease-inducing and perpetuating sympathetic response in an attempt to maintain allostasis. Since the role of sympathetic dysfunction in IMIDs is best studied in RA and rodent models of RA, this IMID is the primary one used to evaluate data relevant to our hypothesis. Here, we review the relevant literature and discuss sympathetic dysfunction as a significant contributor to the pathophysiology of IMIDs, and then discuss a novel target for treatment. Based on our findings in inflammatory arthritis and our understanding of common inflammatory process that are used by the immune system across all IMIDs, novel strategies to restore SNS homeostasis are expected to provide safe, cost-effective approaches to treat IMIDs, lower comorbidities, and increase longevity.
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Affiliation(s)
- Denise L Bellinger
- Department of Pathology and Human Anatomy, School of Medicine, Loma Linda University, Loma Linda, CA 92350, USA.
| | - Dianne Lorton
- College of Arts and Sciences, Kent State University, Kent, OH 44304, USA.
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MicroRNAs as Potential Mediators for Cigarette Smoking Induced Atherosclerosis. Int J Mol Sci 2018; 19:ijms19041097. [PMID: 29642385 PMCID: PMC5979571 DOI: 10.3390/ijms19041097] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 04/02/2018] [Accepted: 04/02/2018] [Indexed: 12/12/2022] Open
Abstract
Smoking increases the risk of atherosclerosis-related events, such as myocardial infarction and ischemic stroke. Recent studies have examined the expression levels of altered microRNAs (miRNAs) in various diseases. The profiles of tissue miRNAs can be potentially used in diagnosis or prognosis. However, there are limited studies on miRNAs following exposure to cigarette smoke (CS). The present study was designed to dissect the effects and cellular/molecular mechanisms of CS-induced atherosclerogenesis. Apolipoprotein E knockout (ApoE KO) mice were exposed to CS for five days a week for two months at low (two puffs/min for 40 min/day) or high dose (two puffs/min for 120 min/day). We measured the area of atherosclerotic plaques in the aorta, representing the expression of miRNAs after the exposure period. Two-month exposure to the high dose of CS significantly increased the plaque area in aortic arch, and significantly upregulated the expression of atherosclerotic markers (VCAM-1, ICAM-1, MCP1, p22phox, and gp91phox). Exposure to the high dose of CS also significantly upregulated the miRNA-155 level in the aortic tissues of ApoE KO mice. Moreover, the expression level of miR-126 tended to be downregulated and that of miR-21 tended to be upregulated in ApoE KO mice exposed to the high dose of CS, albeit statistically insignificant. The results suggest that CS induces atherosclerosis through increased vascular inflammation and NADPH oxidase expression and also emphasize the importance of miRNAs in the pathogenesis of CS-induced atherosclerosis. Our findings provide evidence for miRNAs as potential mediators of inflammation and atherosclerosis induced by CS.
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Leão VF, Ferreira LLDM, Melo CM, Bonfleur ML, da Silva LL, Carneiro EM, Raimundo JM, Ribeiro RA. Taurine supplementation prevents endothelial dysfunction and attenuates structural changes in aortas from hypothalamic obese rats. Eur J Nutr 2018; 58:551-563. [DOI: 10.1007/s00394-018-1616-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 01/14/2018] [Indexed: 02/07/2023]
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25
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Lu QB, Sun J, Kang Y, Sun HJ, Wang HS, Wang Y, Zhu GQ, Zhou YB. Superoxide Anions and NO in the Paraventricular Nucleus Modulate the Cardiac Sympathetic Afferent Reflex in Obese Rats. Int J Mol Sci 2017; 19:ijms19010059. [PMID: 29280941 PMCID: PMC5796009 DOI: 10.3390/ijms19010059] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Revised: 12/03/2017] [Accepted: 12/20/2017] [Indexed: 12/17/2022] Open
Abstract
This study was conducted to explore the hypothesis that the endogenous superoxide anions (O2−) and nitric oxide (NO) system of the paraventricular nucleus (PVN) regulates the cardiac sympathetic afferent reflex (CSAR) contributing to sympathoexcitation in obese rats induced by a high-fat diet (42% kcal as fat) for 12 weeks. CSAR was evaluated by monitoring the changes of renal sympathetic nerve activity (RSNA) and the mean arterial pressure (MAP) responses to the epicardial application of capsaicin (CAP) in anaesthetized rats. In obese rats with hypertension (OH group) or without hypertension (OB group), the levels of PVN O2−, angiotensinII (Ang II), Ang II type 1 receptor (AT1R), and nicotinamide adenine dinucleotide phosphate (NADPH) oxidase were elevated, whereas neural NO synthase (nNOS) and NO were significantly reduced. Moreover, CSAR was markedly enhanced, which promoted the elevation of plasma norepinephrine levels. The enhanced CSAR was attenuated by PVN application of the superoxide scavenger polyethylene glycol-superoxide dismutase (PEG-SOD) and the NO donor sodium nitroprusside (SNP), and was strengthened by the superoxide dismutase inhibitor diethyldithiocarbamic acid (DETC) and the nNOS inhibitor N(ω)-propyl-l-arginine hydrochloride (PLA); conversely, there was a smaller CSAR response to PLA or SNP in rats that received a low-fat (12% kcal) diet. Furthermore, PVN pretreatment with the AT1R antagonist losartan or with PEG-SOD, but not SNP, abolished Ang II-induced CSAR enhancement. These findings suggest that obesity alters the PVN O2− and NO system that modulates CSAR and promotes sympathoexcitation.
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Affiliation(s)
- Qing-Bo Lu
- Key Laboratory of Cardiovascular Disease and Molecular Intervention, Department of Physiology, Nanjing Medical University, Nanjing 210029, China.
| | - Jing Sun
- Key Laboratory of Cardiovascular Disease and Molecular Intervention, Department of Physiology, Nanjing Medical University, Nanjing 210029, China.
| | - Ying Kang
- Key Laboratory of Cardiovascular Disease and Molecular Intervention, Department of Physiology, Nanjing Medical University, Nanjing 210029, China.
| | - Hai-Jian Sun
- Key Laboratory of Cardiovascular Disease and Molecular Intervention, Department of Physiology, Nanjing Medical University, Nanjing 210029, China.
| | - Hui-Shan Wang
- Department of Pediatrics, The Fourth Clinical Medical College of Nanjing Medical University, Nanjing 210029, China.
| | - Yuan Wang
- Department of Pediatrics, The Fourth Clinical Medical College of Nanjing Medical University, Nanjing 210029, China.
| | - Guo-Qing Zhu
- Key Laboratory of Cardiovascular Disease and Molecular Intervention, Department of Physiology, Nanjing Medical University, Nanjing 210029, China.
| | - Ye-Bo Zhou
- Key Laboratory of Cardiovascular Disease and Molecular Intervention, Department of Physiology, Nanjing Medical University, Nanjing 210029, China.
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26
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Cardiovascular risk and the effect of nitric oxide synthase inhibition in female rats: The role of estrogen. Exp Gerontol 2017; 97:38-48. [DOI: 10.1016/j.exger.2017.07.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Revised: 07/23/2017] [Accepted: 07/24/2017] [Indexed: 12/12/2022]
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27
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Tan C, Wang A, Liu C, Li Y, Shi Y, Zhou MS. Puerarin Improves Vascular Insulin Resistance and Cardiovascular Remodeling in Salt-Sensitive Hypertension. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2017; 45:1169-1184. [PMID: 28830209 DOI: 10.1142/s0192415x17500641] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Puerarin is an isoflavonoid isolated from the Chinese herb, Kudzu roots (also known as Gegen), which has been widely used for the treatment of hypertensive diseases and diabetic mellitus in traditional Chinese medicine. Dahl salt-sensitive (DS) rat is a genetic model of salt-sensitive hypertension with cardiovascular injury and vascular insulin resistance. Here, we investigated whether puerarin improved vascular insulin resistance and attenuated cardiac and aortic remodeling in salt-sensitive hypertension. DS rats were given a normal (NS) or high salt diet (HS) for five weeks. An additional group of DS rats was pretreated with puerarin and NS for 10 days, then switched to HS plus puerarin for five weeks. HS for five weeks increased systolic blood pressure (SBP), cardiac hypertrophy and fibrosis, and aortic hypertrophy with increased the expression of phosphor-ERK1/2 in the aorta and heart; puerarin attenuated cardiac and aortic hypertrophy, cardiac fibrosis and phosphor-ERK1/2 with a mild reduction in SBP. Hypertensive rats also manifested impairment of acetylcholine- and insulin-mediated vasorelaxation and insulin-mediated Akt and eNOS phosphorylation associated with the activation of NF[Formula: see text]B/TNF[Formula: see text]/JNK pathway. Puerarin improved acetylcholine- and insulin-mediated vasorelaxation and insulin-stimulated Akt/NO signaling with the inhibition of the NF[Formula: see text]B inflammatory pathway. Our results demonstrated that in salt-sensitive hypertension, puerarin improved vascular insulin action with cardiovascular beneficial effects. Our results found that the underlying mechanisms may involve its inhibition of NF[Formula: see text]B/JNK and ERK1/2 pathway. These results suggest that puerarin could be used as a new antihypertensive agent to expand our armamentarium for the prevention and treatment of end-organ damage in individuals with hypertension and metabolic diseases.
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Affiliation(s)
- Chunxiang Tan
- Department of Physiology, Jinzhou Medical University, Jinzhou 121001, P. R. China
| | - Aimei Wang
- Department of Physiology, Jinzhou Medical University, Jinzhou 121001, P. R. China
| | - Chan Liu
- Department of Endocrinology, 1st Affiliated Hospital, Jinzhou Medical University, Jinzhou 121001, P. R. China
| | - Yao Li
- Department of Physiology, Jinzhou Medical University, Jinzhou 121001, P. R. China
| | - Yuepin Shi
- Department of Chinese Medicine, 1st Affiliated Hospital, Jinzhou Medical University, Jinzhou 121001, P. R. China
| | - Ming-Sheng Zhou
- Department of Physiology, Shenyang Medical University, Shenyang 110034, P. R. China
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Le Jemtel TH, Richardson W, Samson R, Jaiswal A, Oparil S. Pathophysiology and Potential Non-Pharmacologic Treatments of Obesity or Kidney Disease Associated Refractory Hypertension. Curr Hypertens Rep 2017; 19:18. [PMID: 28243928 DOI: 10.1007/s11906-017-0713-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE OF REVIEW The review assesses the role of non-pharmacologic therapy for obesity and chronic kidney disease (CKD) associated refractory hypertension (rf HTN). RECENT FINDINGS Hypertensive patients with markedly heightened sympathetic nervous system (SNS) activity are prone to develop refractory hypertension (rfHTN). Patients with obesity and chronic kidney disease (CKD)-associated HTN have particularly heightened SNS activity and are at high risk of rfHTN. The role of bariatric surgery is increasingly recognized in treatment of obesity. Current evidence advocates for a greater role of bariatric surgery in the management of obesity-associated HTN. In contrast, renal denervation does not appear have a role in the management of obesity or CKD-associated HTN. The role of baroreflex activation as adjunctive anti-hypertensive therapy remains to be defined.
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Affiliation(s)
- Thierry H Le Jemtel
- Division of Cardiology, Tulane University Medical Center, New Orleans, Louisiana, USA. .,Division of Cardiology, Tulane University School of Medicine, 1430 Tulane Ave SL-42, New Orleans, LA, 70112, USA.
| | - William Richardson
- Department of Surgery, Ochsner Health System, New Orleans, Louisiana, USA
| | - Rohan Samson
- Division of Cardiology, Tulane University Medical Center, New Orleans, Louisiana, USA
| | - Abhishek Jaiswal
- Division of Cardiology, Tulane University Medical Center, New Orleans, Louisiana, USA
| | - Suzanne Oparil
- Division of Cardiovascular Disease, University of Alabama, Birmingham, AL, USA
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29
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Li X, Lin Y, Zhou H, Li Y, Wang A, Wang H, Zhou MS. Puerarin protects against endothelial dysfunction and end-organ damage in Ang II-induced hypertension. Clin Exp Hypertens 2017; 39:58-64. [DOI: 10.1080/10641963.2016.1200603] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Xiaojie Li
- Department of Physiology, Liaoning Medical University, Jinzhou, Liaoning, China
| | - Yuhan Lin
- Department of Physiology, Liaoning Medical University, Jinzhou, Liaoning, China
| | - Hongyu Zhou
- Vagelos Scholars Program of the Molecular Life Sciences, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Yao Li
- Department of Physiology, Liaoning Medical University, Jinzhou, Liaoning, China
| | - Aimei Wang
- Department of Physiology, Liaoning Medical University, Jinzhou, Liaoning, China
| | - Hongxin Wang
- Department of Pharmacology, Liaoning Medical University; Jinzhou, Liaoning, China
| | - Ming-Sheng Zhou
- Department of Physiology, Liaoning Medical University, Jinzhou, Liaoning, China
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30
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da Cunha NV, Lopes FNC, Panis C, Cecchini R, Pinge-Filho P, Martins-Pinge MC. iNOS inhibition improves autonomic dysfunction and oxidative status in hypertensive obese rats. Clin Exp Hypertens 2017; 39:50-57. [DOI: 10.1080/10641963.2016.1210628] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | | | - Carolina Panis
- Department of Pathological Sciences, State University of Londrina, Londrina, Brazil
| | - Rubens Cecchini
- Department of Pathological Sciences, State University of Londrina, Londrina, Brazil
| | - Phileno Pinge-Filho
- Department of Pathological Sciences, State University of Londrina, Londrina, Brazil
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31
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Vanhoutte PM, Shimokawa H, Feletou M, Tang EHC. Endothelial dysfunction and vascular disease - a 30th anniversary update. Acta Physiol (Oxf) 2017; 219:22-96. [PMID: 26706498 DOI: 10.1111/apha.12646] [Citation(s) in RCA: 571] [Impact Index Per Article: 81.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 10/27/2015] [Accepted: 12/17/2015] [Indexed: 02/06/2023]
Abstract
The endothelium can evoke relaxations of the underlying vascular smooth muscle, by releasing vasodilator substances. The best-characterized endothelium-derived relaxing factor (EDRF) is nitric oxide (NO) which activates soluble guanylyl cyclase in the vascular smooth muscle cells, with the production of cyclic guanosine monophosphate (cGMP) initiating relaxation. The endothelial cells also evoke hyperpolarization of the cell membrane of vascular smooth muscle (endothelium-dependent hyperpolarizations, EDH-mediated responses). As regards the latter, hydrogen peroxide (H2 O2 ) now appears to play a dominant role. Endothelium-dependent relaxations involve both pertussis toxin-sensitive Gi (e.g. responses to α2 -adrenergic agonists, serotonin, and thrombin) and pertussis toxin-insensitive Gq (e.g. adenosine diphosphate and bradykinin) coupling proteins. New stimulators (e.g. insulin, adiponectin) of the release of EDRFs have emerged. In recent years, evidence has also accumulated, confirming that the release of NO by the endothelial cell can chronically be upregulated (e.g. by oestrogens, exercise and dietary factors) and downregulated (e.g. oxidative stress, smoking, pollution and oxidized low-density lipoproteins) and that it is reduced with ageing and in the course of vascular disease (e.g. diabetes and hypertension). Arteries covered with regenerated endothelium (e.g. following angioplasty) selectively lose the pertussis toxin-sensitive pathway for NO release which favours vasospasm, thrombosis, penetration of macrophages, cellular growth and the inflammatory reaction leading to atherosclerosis. In addition to the release of NO (and EDH, in particular those due to H2 O2 ), endothelial cells also can evoke contraction of the underlying vascular smooth muscle cells by releasing endothelium-derived contracting factors. Recent evidence confirms that most endothelium-dependent acute increases in contractile force are due to the formation of vasoconstrictor prostanoids (endoperoxides and prostacyclin) which activate TP receptors of the vascular smooth muscle cells and that prostacyclin plays a key role in such responses. Endothelium-dependent contractions are exacerbated when the production of nitric oxide is impaired (e.g. by oxidative stress, ageing, spontaneous hypertension and diabetes). They contribute to the blunting of endothelium-dependent vasodilatations in aged subjects and essential hypertensive and diabetic patients. In addition, recent data confirm that the release of endothelin-1 can contribute to endothelial dysfunction and that the peptide appears to be an important contributor to vascular dysfunction. Finally, it has become clear that nitric oxide itself, under certain conditions (e.g. hypoxia), can cause biased activation of soluble guanylyl cyclase leading to the production of cyclic inosine monophosphate (cIMP) rather than cGMP and hence causes contraction rather than relaxation of the underlying vascular smooth muscle.
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Affiliation(s)
- P. M. Vanhoutte
- State Key Laboratory of Pharmaceutical Biotechnology and Department of Pharmacology and Pharmacy; Li Ka Shing Faculty of Medicine; The University of Hong Kong; Hong Kong City Hong Kong
| | - H. Shimokawa
- Department of Cardiovascular Medicine; Tohoku University; Sendai Japan
| | - M. Feletou
- Department of Cardiovascular Research; Institut de Recherches Servier; Suresnes France
| | - E. H. C. Tang
- State Key Laboratory of Pharmaceutical Biotechnology and Department of Pharmacology and Pharmacy; Li Ka Shing Faculty of Medicine; The University of Hong Kong; Hong Kong City Hong Kong
- School of Biomedical Sciences; Li Ka Shing Faculty of Medicine; The University of Hong Kong; Hong Kong City Hong Kong
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Gamboa A, Figueroa R, Paranjape SY, Farley G, Diedrich A, Biaggioni I. Autonomic Blockade Reverses Endothelial Dysfunction in Obesity-Associated Hypertension. Hypertension 2016; 68:1004-10. [PMID: 27528067 DOI: 10.1161/hypertensionaha.116.07681] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 07/19/2016] [Indexed: 01/04/2023]
Abstract
Impaired nitric oxide (NO) vasodilation (endothelial dysfunction) is associated with obesity and thought to be a factor in the development of hypertension. We previously found that NO synthesis inhibition had similar pressor effects in obese hypertensives compared with healthy control during autonomic blockade, suggesting that impaired NO vasodilation is secondary to sympathetic activation. We tested this hypothesis by determining the effect of autonomic blockade (trimethaphan 4 mg/min IV) on NO-mediated vasodilation (increase in forearm blood flow to intrabrachial acetylcholine) compared with endothelial-independent vasodilation (intrabrachial sodium nitroprusside) in obese hypertensive subjects (30<body mass index<40 kg/m(2)). Acetylcholine and sodium nitroprusside were given at equipotent doses (10, 30, and 50 μg/min and 1, 2, and 3 μg/min, respectively) to 14 obese subjects (49±3.6 years, 34±1 kg/m(2), 165/94±7/6 mm Hg), on separate occasions 1 month apart, randomly assigned. Autonomic blockade increased basal forearm blood flow (from 3.9±0.7 to 5.2±1.2 mL/100 mL per minute, P=0.078). As expected, NO-mediated vasodilation was blunted on the intact day compared with NO-independent vasodilation; forearm blood flow increased from 3.6±0.6 to 10.1±1.1 with the highest dose of nitroprusside, but only from 3.7±0.4 to 7.2±0.8 mL/100 mL per minute with the highest dose of acetylcholine, P<0.05. In contrast, forearm blood flow responses to acetylcholine were restored by autonomic blockade and were no longer different to nitroprusside (from 6.2±1.1 to 11.4±1.6 mL/100 mL per minute and from 5.2±0.9 to 12.5±0.9, respectively, P=0.58). Our results support the concept that sympathetic activation contributes to the impairment in NO-mediated vasodilation seen in obesity-associated hypertension and provides further rationale to explore it as a therapeutic target.
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Affiliation(s)
- Alfredo Gamboa
- From the Division of Clinical Pharmacology (A.G., R.F., S.Y.P., G.F., A.D., I.B.), Departments of Medicine (A.G., R.F., S.Y.P., G.F., A.D., I.B.), and Pharmacology (I.B.), Vanderbilt University, Nashville, TN.
| | - Rocío Figueroa
- From the Division of Clinical Pharmacology (A.G., R.F., S.Y.P., G.F., A.D., I.B.), Departments of Medicine (A.G., R.F., S.Y.P., G.F., A.D., I.B.), and Pharmacology (I.B.), Vanderbilt University, Nashville, TN
| | - Sachin Y Paranjape
- From the Division of Clinical Pharmacology (A.G., R.F., S.Y.P., G.F., A.D., I.B.), Departments of Medicine (A.G., R.F., S.Y.P., G.F., A.D., I.B.), and Pharmacology (I.B.), Vanderbilt University, Nashville, TN
| | - Ginnie Farley
- From the Division of Clinical Pharmacology (A.G., R.F., S.Y.P., G.F., A.D., I.B.), Departments of Medicine (A.G., R.F., S.Y.P., G.F., A.D., I.B.), and Pharmacology (I.B.), Vanderbilt University, Nashville, TN
| | - Andre Diedrich
- From the Division of Clinical Pharmacology (A.G., R.F., S.Y.P., G.F., A.D., I.B.), Departments of Medicine (A.G., R.F., S.Y.P., G.F., A.D., I.B.), and Pharmacology (I.B.), Vanderbilt University, Nashville, TN
| | - Italo Biaggioni
- From the Division of Clinical Pharmacology (A.G., R.F., S.Y.P., G.F., A.D., I.B.), Departments of Medicine (A.G., R.F., S.Y.P., G.F., A.D., I.B.), and Pharmacology (I.B.), Vanderbilt University, Nashville, TN
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Uludag MO, Hicdurmaz E, Han S, Usanmaz SE, Abacioglu N, Ark M, Demirel-Yi E. Diurnal Temporal Blood H2S Variations Correlate with the Circadian Rhythm of Vascular Contraction and Blood Pressure. INT J PHARMACOL 2016. [DOI: 10.3923/ijp.2016.587.596] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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34
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Huang F, Ichihara S, Yamada Y, Banu S, Ichihara G. Effect of 4-week inhalation exposure to 1-bromopropane on blood pressure in rats. J Appl Toxicol 2016; 37:331-338. [PMID: 27452781 DOI: 10.1002/jat.3364] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 06/18/2016] [Accepted: 06/18/2016] [Indexed: 01/12/2023]
Abstract
The pathophysiology of hypertension is complex and multifactorial, and includes exposure to various chemical substances. Several recent studies have documented the reproductive and neurological toxicities of 1-bromopropane (1-BP). Given that 1-BP increased reactive oxygen species in the brain of rats, we hypothesized that 1-BP also has cardiovascular toxicity through increased oxidative stress. To test this hypothesis, male F344 and Wistar Nagoya rats (n = 7-8 per group per test) were exposed to 0 or 1000 ppm of 1-BP via inhalation for 4 weeks (8 h per day, 7 days per week). The exposure to 1-BP increased systolic blood pressure. This effect was associated with a significant decrease in the reduced/oxidized glutathione ratio. A significant increase in nitrotyrosine levels, activation of the NADPH oxidase pathway, which was evidenced by upregulation of gp91phox, a NADPH oxidase subunit, and significant decreases in the expressions of antioxidant molecules such as Cu/Zn- and Mn-superoxide dismutase catalase, and nuclear factor erythroid 2-related factor 2, were observed in the aortas of Wistar Nagoya rats exposed to 1-BP. Our results indicate that subacute (4-week) inhalation exposure to 1-BP increases blood pressure and suggest that this cardiovascular toxic effect is due, at least in part, to increased oxidative stress mediated through activation of the NADPH oxidase pathway. Further study is needed to assess whether NADPH oxidase activation causes the increase in blood pressure in the rats exposed to 1-BP. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Fen Huang
- Department of Environmental and Occupational Health, Nagoya University Graduate School of Medicine, Nagoya, Japan.,School of Public Health, Anhui Medical University, Anhui, China
| | - Sahoko Ichihara
- Department of Human Functional Genomics, Life Science Research Center, Mie University, Tsu, Japan
| | - Yuki Yamada
- Department of Human Functional Genomics, Life Science Research Center, Mie University, Tsu, Japan.,Japanese Red Cross Wakayama Medical Center, Wakayama, Japan
| | - Shameema Banu
- Department of Environmental and Occupational Health, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Department of Obstetrics and Gynecology, Shri Sathya Sai Medical College Hospital and Research Center, Tamil Nadu, India
| | - Gaku Ichihara
- Department of Environmental and Occupational Health, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Department of Occupational and Environmental Health, Tokyo University of Science, Noda, Japan
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Rajapakse NW, Head GA, Kaye DM. Say NO to Obesity-Related Hypertension: Role of the L-Arginine-Nitric Oxide Pathway. Hypertension 2016; 67:813-9. [PMID: 27021014 DOI: 10.1161/hypertensionaha.116.06778] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Niwanthi W Rajapakse
- From the Baker IDI Heart and Diabetes Institute, Melbourne, VIC, Australia (N.W.R., G.A.H., D.M.K.); Department of Medicine, Monash University, Melbourne, VIC, Australia (D.M.K.); and Department of Physiology, Monash University, Melbourne, VIC, Australia (N.W.R.).
| | - Geoffrey A Head
- From the Baker IDI Heart and Diabetes Institute, Melbourne, VIC, Australia (N.W.R., G.A.H., D.M.K.); Department of Medicine, Monash University, Melbourne, VIC, Australia (D.M.K.); and Department of Physiology, Monash University, Melbourne, VIC, Australia (N.W.R.)
| | - David M Kaye
- From the Baker IDI Heart and Diabetes Institute, Melbourne, VIC, Australia (N.W.R., G.A.H., D.M.K.); Department of Medicine, Monash University, Melbourne, VIC, Australia (D.M.K.); and Department of Physiology, Monash University, Melbourne, VIC, Australia (N.W.R.)
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Influence of fat intake and BMI on the association of rs1799983 NOS3 polymorphism with blood pressure levels in an Iberian population. Eur J Nutr 2016; 56:1589-1596. [DOI: 10.1007/s00394-016-1203-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 03/11/2016] [Indexed: 12/13/2022]
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Kakoti BB, Hernandez-Ontiveros DG, Kataki MS, Shah K, Pathak Y, Panguluri SK. Resveratrol and Omega-3 Fatty Acid: Its Implications in Cardiovascular Diseases. Front Cardiovasc Med 2015; 2:38. [PMID: 26697434 PMCID: PMC4675849 DOI: 10.3389/fcvm.2015.00038] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 11/19/2015] [Indexed: 01/15/2023] Open
Abstract
The present review aims at summarizing the major therapeutic roles of resveratrol and omega-3 fatty acids (O3FAs) along with their related pathways. This article reviews some of the key studies involving the health benefits of resveratrol and O3FAs. Oxidative stress has been considered as one of the most important pathophysiological factors associated with various cardiovascular disease conditions. Resveratrol, with the potent antioxidant and free radical scavenging properties, has been proven to be a significantly protective compound in restoring the normal cardiac health. A plethora of research also demonstrated the reduction of the risk of coronary heart disease, hypertension, and stroke, and their complications by O3FAs derived from fish and fish oils. This review describes the potential cardioprotective role of resveratrol and O3FAs in ameliorating the endoplasmic reticulum stress.
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Affiliation(s)
| | | | | | - Kajri Shah
- College of Pharmacy, University of South Florida , Tampa, FL , USA
| | - Yashwant Pathak
- College of Pharmacy, University of South Florida , Tampa, FL , USA
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Bogdański P, Suliburska J, Szulińska M, Sikora M, Walkowiak J, Jakubowski H. L-Arginine and vitamin C attenuate pro-atherogenic effects of high-fat diet on biomarkers of endothelial dysfunction in rats. Biomed Pharmacother 2015; 76:100-6. [PMID: 26653556 DOI: 10.1016/j.biopha.2015.10.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 10/23/2015] [Indexed: 12/26/2022] Open
Abstract
High-fat diet (HFD) is known to cause endothelial dysfunction and contribute to atherosclerosis progression. The objective of this study was to evaluate the efficacy of L-arginine (L-Arg) and vitamin C supplementation as a potentially useful strategy for modulation of serum homocysteine (Hcy) levels, tumor necrosis factor alpha (TNF-α), oxidative stress, and insulin resistance induced by HFD in rats. Six weeks-old female and male Wistar rats were divided into five groups of twelve rats each and treated for six weeks with: group 1, standard diet; group 2, HFD; group 3, HFD supplemented with L-Arg (20g/kg diet); group 4, HFD supplemented with L-Arg (20g/kg diet) plus vitamin C (100mg/kg diet); group 5, HFD supplemented with vitamin C (100mg/kg diet). HFD significantly elevated TNF-α, reduced total antioxidant status (TAS), and increased insulin resistance (HOMA-IR). Significant increases of total cholesterol (TCH), LDL cholesterol (LDL), triglyceride (TG) and a decrease of HDL cholesterol (HDL) were observed in HFD rats. Supplementation with l-Arg prevented the decrease of TAS and the increases in HOMA-IR, LDL, and TG levels. Moreover, Hcy and TNF-α levels were reduced in L-Arg supplemented group. Supplementation with vitamin C significantly atenuated TAS decrease and lowered LDL levels. L-Arg plus vitamin C enhanced L-Arg effect on TAS and protected against TNF-α increase. Western blot analysis showed that l-Arg supplementation of HFD rats reduced the level of protein carbonyls. Taken together, these findings indicate that supplemental l-arginine and/or vitamin C, by their abilities to modulate biomarkers of HFD-induced endothelial dysfunction, are anti-atherogenic.
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Affiliation(s)
- Paweł Bogdański
- Department of Education and Obesity Treatment and Metabolic Disorders, Poznan University of Medical Sciences, Szamarzewskiego 84 Str., 60-569 Poznan, Poland
| | - Joanna Suliburska
- Department of Human Nutrition and Hygiene, Poznan University of Life Sciences, Wojska Polskiego 31 Str., 60-624 Poznan, Poland
| | - Monika Szulińska
- Department of Education and Obesity Treatment and Metabolic Disorders, Poznan University of Medical Sciences, Szamarzewskiego 84 Str., 60-569 Poznan, Poland
| | - Marta Sikora
- European Centre for Bioinformatics and Genomics, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Piotrowo 1 Str., 61-138 Poznan, Poland
| | - Jarosław Walkowiak
- Department of Pediatric Gastroenterology and Metabolic Diseases, University of Medical Sciences, Szpitalna 27/33 Str., 60-572 Poznan, Poland
| | - Hieronim Jakubowski
- Department of Biochemistry and Biotechnology, University of Life Sciences, Dojazd 11 Str., 60-632 Poznan, Poland; Institute of Bioorganic Chemistry, Noskowskiego 12/14 Str., 61-704 Poznan, Poland; Department of Microbiology, Biochemistry & Molecular Genetics, Rutgers University, New Jersey Medical School, International Center for Public Health, Newark, NJ 07103-3535, USA.
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Abdesselam I, Pepino P, Troalen T, Macia M, Ancel P, Masi B, Fourny N, Gaborit B, Giannesini B, Kober F, Dutour A, Bernard M. Time course of cardiometabolic alterations in a high fat high sucrose diet mice model and improvement after GLP-1 analog treatment using multimodal cardiovascular magnetic resonance. J Cardiovasc Magn Reson 2015; 17:95. [PMID: 26546347 PMCID: PMC4636800 DOI: 10.1186/s12968-015-0198-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 10/28/2015] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Cardiovascular complications of obesity and diabetes are major health problems. Assessing their development, their link with ectopic fat deposition and their flexibility with therapeutic intervention is essential. The aim of this study was to longitudinally investigate cardiac alterations and ectopic fat accumulation associated with diet-induced obesity using multimodal cardiovascular magnetic resonance (CMR) in mice. The second objective was to monitor cardiac response to exendin-4 (GLP-1 receptor agonist). METHODS Male C57BL6R mice subjected to a high fat (35 %) high sucrose (34 %) (HFHSD) or a standard diet (SD) during 4 months were explored every month with multimodal CMR to determine hepatic and myocardial triglyceride content (HTGC, MTGC) using proton MR spectroscopy, cardiac function with cine cardiac MR (CMR) and myocardial perfusion with arterial spin labeling CMR. Furthermore, mice treated with exendin-4 (30 μg/kg SC BID) after 4 months of diet were explored before and 14 days post-treatment with multimodal CMR. RESULTS HFHSD mice became significantly heavier (+33 %) and displayed glucose homeostasis impairment (1-month) as compared to SD mice, and developed early increase in HTGC (1 month, +59 %) and MTGC (2-month, +63 %). After 3 months, HFHSD mice developed cardiac dysfunction with significantly higher diastolic septum wall thickness (sWtnD) (1.28 ± 0.03 mm vs. 1.12 ± 0.03 mm) and lower cardiac index (0.45 ± 0.06 mL/min/g vs. 0.68 ± 0.07 mL/min/g, p = 0.02) compared to SD mice. A significantly lower cardiac perfusion was also observed (4 months:7.5 ± 0.8 mL/g/min vs. 10.0 ± 0.7 mL/g/min, p = 0.03). Cardiac function at 4 months was negatively correlated to both HTGC and MTGC (p < 0.05). 14-day treatment with Exendin-4 (Ex-4) dramatically reversed all these alterations in comparison with placebo-treated HFHSD. Ex-4 diminished myocardial triglyceride content (-57.8 ± 4.1 %), improved cardiac index (+38.9 ± 10.9 %) and restored myocardial perfusion (+52.8 ± 16.4 %) under isoflurane anesthesia. Interestingly, increased wall thickness and hepatic steatosis reductions were independent of weight loss and glycemia decrease in multivariate analysis (p < 0.05). CONCLUSION CMR longitudinal follow-up of cardiac consequences of obesity and diabetes showed early accumulation of ectopic fat in mice before the occurrence of microvascular and contractile dysfunction. This study also supports a cardioprotective effect of glucagon-like peptide-1 receptor agonist.
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Affiliation(s)
- Inès Abdesselam
- Aix-Marseille Université, CNRS, CRMBM, UMR7339, 27, Bd Jean Moulin, 13385, Marseille, France
- Aix-Marseille Université, NORT, Inserm U1062/Inra1260, 13385, Marseille, France
| | - Pauline Pepino
- Aix-Marseille Université, CNRS, CRMBM, UMR7339, 27, Bd Jean Moulin, 13385, Marseille, France
| | - Thomas Troalen
- Aix-Marseille Université, CNRS, CRMBM, UMR7339, 27, Bd Jean Moulin, 13385, Marseille, France
| | - Michael Macia
- Aix-Marseille Université, CNRS, CRMBM, UMR7339, 27, Bd Jean Moulin, 13385, Marseille, France
| | - Patricia Ancel
- Aix-Marseille Université, NORT, Inserm U1062/Inra1260, 13385, Marseille, France
| | - Brice Masi
- Aix-Marseille Université, CNRS, CRMBM, UMR7339, 27, Bd Jean Moulin, 13385, Marseille, France
| | - Natacha Fourny
- Aix-Marseille Université, CNRS, CRMBM, UMR7339, 27, Bd Jean Moulin, 13385, Marseille, France
| | - Bénédicte Gaborit
- Aix-Marseille Université, NORT, Inserm U1062/Inra1260, 13385, Marseille, France
- Endocrinology, Metabolic diseases and nutrition, CHU Nord, Marseille, France
| | - Benoît Giannesini
- Aix-Marseille Université, CNRS, CRMBM, UMR7339, 27, Bd Jean Moulin, 13385, Marseille, France
| | - Frank Kober
- Aix-Marseille Université, CNRS, CRMBM, UMR7339, 27, Bd Jean Moulin, 13385, Marseille, France
| | - Anne Dutour
- Aix-Marseille Université, NORT, Inserm U1062/Inra1260, 13385, Marseille, France
- Endocrinology, Metabolic diseases and nutrition, CHU Nord, Marseille, France
| | - Monique Bernard
- Aix-Marseille Université, CNRS, CRMBM, UMR7339, 27, Bd Jean Moulin, 13385, Marseille, France.
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Ariza D, Lopes FNC, Crestani CC, Martins-Pinge MC. Chemoreflex and baroreflex alterations in Parkinsonism induced by 6-OHDA in unanesthetized rats. Neurosci Lett 2015; 607:77-82. [DOI: 10.1016/j.neulet.2015.09.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 09/10/2015] [Accepted: 09/21/2015] [Indexed: 11/29/2022]
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Cardiac-specific overexpression of metallothionein attenuates myocardial remodeling and contractile dysfunction in l-NAME-induced experimental hypertension: Role of autophagy regulation. Toxicol Lett 2015; 237:121-32. [DOI: 10.1016/j.toxlet.2015.06.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 06/05/2015] [Accepted: 06/05/2015] [Indexed: 12/20/2022]
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Chen M, Zhang M, Zhang X, Li J, Wang Y, Fan Y, Shi R. Limb ischemic preconditioning protects endothelium from oxidative stress by enhancing nrf2 translocation and upregulating expression of antioxidases. PLoS One 2015; 10:e0128455. [PMID: 26029932 PMCID: PMC4451753 DOI: 10.1371/journal.pone.0128455] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Accepted: 04/27/2015] [Indexed: 11/18/2022] Open
Abstract
Remote ischemic preconditioning is often performed by limb ischemic preconditioning (LIPC), which has been demonstrated to be beneficial to various cells, including endothelial cells. The mechanisms underlying the protection have not been well clarified. The present study was designed to observe the effects of sera derived from rats after LIPC on human umbilical vein endothelial cells (HUVECs) injured by hydrogen peroxide (H2O2) -induced oxidative stress and explore the involvement of redox state in the protection. Incubation with 1 mM H2O2 for 2 h induced a significant reduction in HUVECs' viability with increased production of malondialdehyde (MDA) and reactive oxygen species (ROS). Preincubation with early preconditioning serum (EPS) or delayed preconditioning serum (DPS) derived from rats subjected to LIPC alleviated these changes. Both EPS and DPS increased the nuclear translocation of transcription factor nuclear factor E2-related factor 2 (Nrf2) and the expression of antioxidases. The protective effects of EPS and DPS were blocked neither by MEK/ERK inhibitors U0126 nor by PI3K/Akt inhibitors LY294002. In conclusion, the present study provides the evidence that LIPC protects the HUVECs from H2O2-induced injury by, at least partially, enhancement of Nrf2 translocation and upregulation of antioxidases via signaling pathways independent of MEK/ERK and PI3K/Akt.
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Affiliation(s)
- Min Chen
- Department of Pharmacology, Shanxi Medical University, Xinjiannanlu 56, Taiyuan, 030001, Shanxi Province, China
| | - Mingsheng Zhang
- Department of Pharmacology, Shanxi Medical University, Xinjiannanlu 56, Taiyuan, 030001, Shanxi Province, China
- * E-mail:
| | - Xuanping Zhang
- Department of Pharmacology, Shanxi Medical University, Xinjiannanlu 56, Taiyuan, 030001, Shanxi Province, China
| | - Jie Li
- Department of Pharmacology, Shanxi Medical University, Xinjiannanlu 56, Taiyuan, 030001, Shanxi Province, China
| | - Yan Wang
- Department of Pharmacology, Shanxi Medical University, Xinjiannanlu 56, Taiyuan, 030001, Shanxi Province, China
| | - Yanying Fan
- Department of Pharmacology, Shanxi Medical University, Xinjiannanlu 56, Taiyuan, 030001, Shanxi Province, China
| | - Ruizan Shi
- Department of Pharmacology, Shanxi Medical University, Xinjiannanlu 56, Taiyuan, 030001, Shanxi Province, China
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Silva A, Ariza D, Dias D, Crestani C, Martins-Pinge M. Cardiovascular and autonomic alterations in rats with Parkinsonism induced by 6-OHDA and treated with L-DOPA. Life Sci 2015; 127:82-9. [DOI: 10.1016/j.lfs.2015.01.032] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 12/05/2014] [Accepted: 01/31/2015] [Indexed: 12/31/2022]
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Amorim EDT, Peras VR, de Andrade O, Martins-Pinge MC. Functional evidence of paraventricular nucleus involvement in cardiovascular and autonomic modulation in response to acute microgravity (head-down tilt) in unanesthetized rats. J Neurosci Res 2015; 93:1305-12. [DOI: 10.1002/jnr.23586] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 02/17/2015] [Accepted: 02/26/2015] [Indexed: 11/10/2022]
Affiliation(s)
| | - Vivian Rossi Peras
- Department of Physiological Sciences; State University of Londrina; Londrina Paraná Region Brazil
| | - Ozahyr de Andrade
- Department of Physiological Sciences; State University of Londrina; Londrina Paraná Region Brazil
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Herrera EA, Farías JG, González-Candia A, Short SE, Carrasco-Pozo C, Castillo RL. Ω3 Supplementation and intermittent hypobaric hypoxia induce cardioprotection enhancing antioxidant mechanisms in adult rats. Mar Drugs 2015; 13:838-60. [PMID: 25658050 PMCID: PMC4344605 DOI: 10.3390/md13020838] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 01/13/2015] [Accepted: 01/16/2015] [Indexed: 01/29/2023] Open
Abstract
Intermittent hypobaric hypoxia (IH) is linked with oxidative stress, impairing cardiac function. However, early IH also activate cardio-protective mechanisms. Omega 3 fatty acids (Ω3) induce cardioprotection by reducing infarct size and reinforcing antioxidant defenses. The aim of this work was to determine the combined effects of IH and Ω3 on cardiac function; oxidative balance and inflammatory state. Twenty-eight rats were randomly divided into four groups: normobaric normoxia (N); N + Ω3 (0.3 g·kg−1·day−1); IH; and IH + Ω3. IH was induced by 4 intercalate periods of hypoxia (4 days)—normoxia (4 days) in a hypobaric chamber during 32 days. At the end of the exposure, hearts were mounted in a Langendorff system and subjected to 30 min of ischemia followed by 120 min of reperfusion. In addition, we determined HIF-1α and ATP levels, as well as oxidative stress by malondialdehyde and nitrotyrosine quantification. Further, the expression of the antioxidant enzymes superoxide dismutase, catalase, and glutathione peroxidase was determined. NF-kappaB and myeloperoxidase levels were assessed in the hearts. Relative to N hearts, IH improved left ventricular function (Left ventricular developed pressure: N; 21.8 ± 3.4 vs. IH; 42.8 ± 7.1 mmHg; p < 0.05); reduced oxidative stress (Malondialdehyde: N; 14.4 ± 1.8 vs. IH; 7.3 ± 2.1 μmol/mg prot.; p < 0.05); and increased antioxidant enzymes expression. Supplementation with Ω3 induces similar responses as IH group. Our findings suggest that both, IH and Ω3 in an independent manner, induce functional improvement by antioxidant and anti-inflammatory mechanisms, establishing cardio-protection.
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Affiliation(s)
- Emilio A Herrera
- Programa de Fisiopatología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago 8380453, Chile.
| | - Jorge G Farías
- Departamento de Ingeniería Química, Facultad de Ingeniería y Ciencias, Universidad de la Frontera, Temuco 4811230, Chile.
| | - Alejandro González-Candia
- Programa de Fisiopatología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago 8380453, Chile.
| | - Stefania E Short
- Departamento de Ingeniería Química, Facultad de Ingeniería y Ciencias, Universidad de la Frontera, Temuco 4811230, Chile.
| | - Catalina Carrasco-Pozo
- Departamento de Nutrición, Facultad de Medicina, Universidad de Chile, Santiago 8380453, Chile.
| | - Rodrigo L Castillo
- Programa de Fisiopatología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago 8380453, Chile.
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Ariza D, Sisdeli L, Crestani CC, Fazan R, Martins-Pinge MC. Dysautonomias in Parkinson's disease: cardiovascular changes and autonomic modulation in conscious rats after infusion of bilateral 6-OHDA in substantia nigra. Am J Physiol Heart Circ Physiol 2014; 308:H250-7. [PMID: 25416189 DOI: 10.1152/ajpheart.00406.2014] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
It is important to elucidate the mechanism of dysautonomias in patients with Parkinson's disease; therefore, this study aimed to investigate the cardiovascular and autonomic changes that occur in an animal model of Parkinsonism. Adult male Wistar rats were anesthetized before bilateral microinfusions of 6-hydroxydopamine (6-OHDA) into the substantia nigra. The sham group underwent the same surgical procedure but received vehicle. After 7 days, the mean arterial pressure (MAP) and heart rate (HR) were measured, and various drugs were injected into conscious rats through cannulas previously implanted in the femoral artery and vein. Spectral analyses of systolic arterial pressure (SAP) and pulse interval (PI) were conducted with the CardioSeries software as the spontaneous baroreflex gain and effectivity. The animals were subjected to α-, β-adrenergic, or muscarinic receptor antagonism. For confirmation of the lesion, the levels of dopamine in the striatum were quantified by high-performance liquid chromatography. Animals that underwent 6-OHDA microinfusion had lower MAP and HR compared with those in the sham group. Spectral analysis of SAP showed that 6-OHDA animals exhibited a decrease in the sympathetic component. The PI values did not differ between groups. After the administration of muscarinic and β-adrenergic antagonists, the cardiovascular measures did not differ between the groups. However, upon administration of the α-adrenergic antagonist, the 6-OHDA animals exhibited a lower decrease in the MAP. We report cardiovascular impairments in 6-OHDA animals, possibly due to decreased sympathetic activity. Determination of the origin of these changes (central or peripheral) requires further investigation.
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Affiliation(s)
- D Ariza
- Department of Physiological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - L Sisdeli
- Department of Physiological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - C C Crestani
- Department of Natural Active Principles and Toxicology, School of Pharmaceutical Sciences, State University Paulista-UNESP, Araraquara, SP, Brazil; and
| | - R Fazan
- Department of Physiology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - M C Martins-Pinge
- Department of Physiological Sciences, State University of Londrina, Londrina, PR, Brazil;
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