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Carbonel AAF, Vieira MC, Simões RS, Lima PDA, Fuchs LFP, Girão ERC, Cicivizzo GP, Sasso GRS, de Moraes LOC, Soares Junior JM, Baracat EC, Simões MJ, Girão MJBC. Isoflavones improve collagen I and glycosaminoglycans and prevent bone loss in type 1 diabetic rats. Climacteric 2019; 23:75-83. [DOI: 10.1080/13697137.2019.1627314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- A. A. F. Carbonel
- Department of Morphology and Genetics, Paulista School of Medicine/Federal University of São Paulo – EPM/UNIFESP, São Paulo, Brazil
| | - M. C. Vieira
- Department of Gynecology, Paulista School of Medicine/Federal University of São Paulo – EPM/UNIFESP, São Paulo, Brazil
| | - R. S. Simões
- Department of Obstetrics and Gynecology, Medicine Faculty of University of São Paulo – FMUSP, São Paulo, Brazil
| | - P. D. A. Lima
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Canada
| | - L. F. P. Fuchs
- Department of Gynecology, Paulista School of Medicine/Federal University of São Paulo – EPM/UNIFESP, São Paulo, Brazil
| | - E. R. C. Girão
- Department of Gynecology, Paulista School of Medicine/Federal University of São Paulo – EPM/UNIFESP, São Paulo, Brazil
| | - G. P. Cicivizzo
- Department of Morphology and Genetics, Paulista School of Medicine/Federal University of São Paulo – EPM/UNIFESP, São Paulo, Brazil
| | - G. R. S. Sasso
- Department of Gynecology, Paulista School of Medicine/Federal University of São Paulo – EPM/UNIFESP, São Paulo, Brazil
| | - L. O. Carvalho de Moraes
- Department of Morphology and Genetics, Paulista School of Medicine/Federal University of São Paulo – EPM/UNIFESP, São Paulo, Brazil
| | - J. M. Soares Junior
- Department of Obstetrics and Gynecology, Medicine Faculty of University of São Paulo – FMUSP, São Paulo, Brazil
| | - E. C. Baracat
- Department of Obstetrics and Gynecology, Medicine Faculty of University of São Paulo – FMUSP, São Paulo, Brazil
| | - M. J. Simões
- Department of Morphology and Genetics, Paulista School of Medicine/Federal University of São Paulo – EPM/UNIFESP, São Paulo, Brazil
| | - M. J. B. C. Girão
- Department of Gynecology, Paulista School of Medicine/Federal University of São Paulo – EPM/UNIFESP, São Paulo, Brazil
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Ateyya H, Nader MA, El-Sherbeeny NA. Beneficial effects of rosiglitazone and losartan combination in diabetic rats. Can J Physiol Pharmacol 2018; 96:215-220. [DOI: 10.1139/cjpp-2017-0332] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Diabetes with vascular complication needs strict interventions to retard possible serious complications. This research estimated the possible interaction of rosiglitazone (RGN) with losartan (Los) in diabetic rats. Male Sprague–Dawley rats were randomly divided into nondiabetic rats, diabetic rats, and diabetic rats that received RGN, Los, or a combination of RGN and Los. Measurement of serum glucose, vascular adhesion molecule-1, interleukin-6, tumor necrosis factor-α, aortic lipid peroxide (malondialdehyde), glutathione, superoxide dismutase, and total nitrate/nitrite levels was done. Also, the effects of RGN on the relaxation created by acetylcholine and sodium nitroprusside, contraction of isolated aortic rings provoked by phenylephrine and angiotensin II were determined. Results revealed that RGN or Los had a vasodilating effect to variable degrees indicated by enhanced effects on both acetylcholine-induced relaxation and the antagonistic effect on angiotensin II and phenylephrine-stimulated contraction of diabetic aortas with significant amelioration in serum glucose, vascular adhesion molecule-1, interleukin-6, and tumor necrosis factor-α levels and aortic oxidant/antioxidant balance. Treatment of diabetic rats with a combination of RGN and Los produced a more pronounced effect on the measured parameters compared to the diabetic, RGN-, and Los-treated groups. These findings point out the beneficial effects of RGN and Los combination in diabetic rats.
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Affiliation(s)
- Hayam Ateyya
- College of Pharmacy, Taibah University, El-Madinah El-Munawarah, Saudi Arabia
- Department of Clinical Pharmacology, Faculty of Medicine, Cairo University, Egypt
| | - Manar A. Nader
- College of Pharmacy, Taibah University, El-Madinah El-Munawarah, Saudi Arabia
- Faculty of Pharmacy, Mansoura University, Egypt
| | - Nagla A. El-Sherbeeny
- College of Pharmacy, Taibah University, El-Madinah El-Munawarah, Saudi Arabia
- Department of Clinical Pharmacology, Faculty of Medicine, Suez Canal University, Egypt
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Naik SR, Shaikh N, Patil RR, Somani RS, Mali AS. Protective activity profile of herbomineral medicine in early diabetic nephropathy rats: Restoration of kidney antioxidants, hemodynamics and suppression of proinflammatory mediators. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.biomag.2013.10.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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4
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Protective effect of herbomineral formulation (Dolabi) on early diabetic nephropathy in streptozotocin-induced diabetic rats. J Nat Med 2011; 66:500-9. [DOI: 10.1007/s11418-011-0614-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Accepted: 11/08/2011] [Indexed: 12/21/2022]
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Osorio H, Bautista R, Rios A, Franco M, Santamaría J, Escalante B. Effect of treatment with losartan on salt sensitivity and SGLT2 expression in hypertensive diabetic rats. Diabetes Res Clin Pract 2009; 86:e46-9. [PMID: 19800706 DOI: 10.1016/j.diabres.2009.09.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2009] [Revised: 08/24/2009] [Accepted: 09/07/2009] [Indexed: 11/21/2022]
Abstract
Sodium-glucose cotransporters (SGLTs) in the kidney, may be involved in hypertension, diabetes and salt sensitivity. We evaluate the effect of losartan on blood pressure (BP) and SGLT2 expression in diabetic rats with high or normal salt diet. Losartan prevented an increase in BP and SGLT2 expression in diabetic rats.
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MESH Headings
- Animals
- Antihypertensive Agents/therapeutic use
- Blood Pressure
- Diabetes Complications/drug therapy
- Diabetes Mellitus, Experimental/complications
- Diabetes Mellitus, Experimental/genetics
- Diabetes Mellitus, Experimental/pathology
- Diabetes Mellitus, Experimental/physiopathology
- Diuresis
- Gene Expression Regulation
- Glomerular Filtration Rate
- Hypertension/complications
- Hypertension/drug therapy
- Hypertension/genetics
- Hypertension/physiopathology
- Kidney Cortex/pathology
- Losartan/therapeutic use
- Male
- Rats
- Rats, Wistar
- Receptor, Angiotensin, Type 1/drug effects
- Receptor, Angiotensin, Type 1/physiology
- Sodium, Dietary
- Sodium-Glucose Transporter 2/genetics
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Affiliation(s)
- Horacio Osorio
- Department of Molecular Biomedicine, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV) México City, Mexico
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Georgescu A, Popov D, Dragan E, Dragomir E, Badila E. Protective effects of nebivolol and reversal of endothelial dysfunction in diabetes associated with hypertension. Eur J Pharmacol 2007; 570:149-58. [PMID: 17612521 DOI: 10.1016/j.ejphar.2007.05.031] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2007] [Revised: 05/05/2007] [Accepted: 05/22/2007] [Indexed: 12/27/2022]
Abstract
This study aims to decipher the potential effects of nebivolol in prevention and/or regression of renal artery dysfunction in diabetes associated with hypertension. Renal arteries were isolated from 80 male mice divided into four experimental groups: (i) group D: diabetics, at 2 months since streptozotocin injection; (ii) group Din: mice that at the initiation of streptozotocin diabetes were treated with 10 mg/kg b.w./day nebivolol for 2 months, to test for the potential prevention of vascular dysfunction; (iii) group Dfin: mice that after 2 months of diabetes were treated daily with 10 mg/kg b.w./day nebivolol for additional 2 months, in order to follow the possible regression of the dysfunction, and (iv) controls (C), age-matched healthy animals. The following measurements were performed: arterial blood pressure, plasma glucose concentration, and the vascular reactivity of the renal arteries in response to noradrenaline (10(-4) M), acetylcholine (10(-4) M) and sodium nitroprusside (10(-4) M). To assess the molecular mechanisms involved in the reactivity of the renal artery, the contribution of mitogen-activated protein kinase (MAP kinase) pathway and of L-type voltage gated Ca(2+) channels (in the contractile response to noradrenaline), of nitric oxide (NO) and Ca(2+) activated K(+) channels (in the endothelium-dependent vasodilator response), and of cGMP (in the endothelium-independent vasodilator response) was examined by exposing the arteries to corresponding inhibitors, and by using myograph and patch-clamp techniques, immunoblotting and NO assays. Results showed that, group D was characterized by hyperglycemia (blood glucose concentration: 136.66 +/- 4.96 mg/dl, a value approximately 65% increased compared to group C) and hypertension (systolic blood pressure: 145.66 +/- 5.96 mm Hg, a value approximately 34% increased compared to group C). Compared to group D, group Din was characterized by diminished blood glucose concentration ( approximately 1.6 fold), reduced systolic and diastolic blood pressure ( approximately 1.3 fold) and heart rate ( approximately 1.6 fold), as well as by increased contractile response of the renal artery to noradrenaline ( approximately 1.84 fold) and of the impeded vasodilator response to acetylcholine ( approximately 1.81 fold) and sodium nitroprusside ( approximately 1.42 fold). Together, these effects demonstrate that administration of 10 mg/kg b.w./day nebivolol at the moment of diabetes induction has preventive effects, ameliorating diabetes dysfunctions. Compared to group D, group Dfin was characterized by diminished glucose concentration ( approximately 1.3 fold), reduced systolic and diastolic blood pressure and heart rate (both approximately 1.2 fold), and by augmentation of contractile response of the renal artery to noradrenaline ( approximately 1.62 fold) and of vasodilator response to acetylcholine ( approximately 1.13 fold) and sodium nitroprusside ( approximately 1.19 fold). These effects assess that administration of 10 mg/kg b.w./day nebivolol after 2 months of diabetes contributes to regression of diabetes-associated dysfunctionalies. Nebivolol influenced the molecular mechanisms involved in renal artery reactivity in diabetic and hypertensive mice: it increased the NO production and endothelial NO synthase (eNOS) protein expression, decreased the expression of proportional, variant protein in L-type calcium channels and Ca(2+) activated K(+) channels, and diminished the MAP kinase activity. The reported data suggest that nebivolol may offer additional vascular protection for treating diabetes associated with hypertension.
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Affiliation(s)
- Adriana Georgescu
- Institute of Cellular Biology and Pathology "N. Simionescu", Bucharest, Romania.
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Wichi RB, Farah V, Chen Y, Irigoyen MC, Morris M. Deficiency in angiotensin AT1a receptors prevents diabetes-induced hypertension. Am J Physiol Regul Integr Comp Physiol 2007; 292:R1184-9. [PMID: 17122330 DOI: 10.1152/ajpregu.00524.2006] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The renin-angiotensin system has been implicated in the etiology of the cardiovascular complications of diabetes. Our studies extend these findings to show a specific role for angiotensin AT1a receptors in mediating diabetes-induced hypertension. Male angiotensin AT1a knockout (AT1aKO) and wild-type (AT1aWT) mice with arterial telemetric catheters were injected with streptozotocin (STZ; 150 mg/kg ip). The STZ dose was selected on the basis of a dose-response experiment in C57/BL mice. Blood glucose, water intake, body weight, blood pressure (BP), and heart rate (HR) were measured over a 2-wk period. Estimates of BP and HR variance (BPV and HRV) and their low- and high-frequency domains were also determined. STZ induced similar levels of hyperglycemia and polydypsia in the groups. Mean arterial pressure (MAP) was increased from 100 ± 6 to 124 ± 6 mmHg in diabetic AT1aWT. MAP was unchanged in AT1aKO (80 ± 4 vs. 85 ± 5 mmHg, basal vs. STZ). Treatment with an ACE inhibitor, captopril, produced a greater reduction in MAP (−18%) in diabetic AT1aWT than in AT1aKO (−3.4%). BPV was lower in AT1aKO (19 ± 0.5 vs. 9 ± 2 mmHg2, AT1aWT vs. AT1aKO). Diabetes reduced BPV but only in AT1aWT (19 ± 0.5 vs. 8 ± 1 mmHg2, basal vs. STZ). There were no changes in HR in either group. In AT1aKO, STZ increased HRV and its high-frequency domain with no changes seen in AT1aWT. Results document that ANG AT1a receptors are critical in diabetes-induced hypertension and in cardiac autonomic responses.
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MESH Headings
- Animals
- Blood Glucose/analysis
- Blood Pressure/drug effects
- Body Weight/drug effects
- Diabetes Mellitus, Experimental/physiopathology
- Dose-Response Relationship, Drug
- Drinking/drug effects
- Heart Rate/drug effects
- Hypertension/prevention & control
- Insulin/blood
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Receptor, Angiotensin, Type 1/deficiency
- Receptor, Angiotensin, Type 1/genetics
- Receptor, Angiotensin, Type 1/metabolism
- Streptozocin/pharmacology
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Affiliation(s)
- Rogerio B Wichi
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State University, 3640 Colonel Glenn Highway, Dayton, OH 45435, USA
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Al-Attar AM, Zari TA. Modulatory Effects of Ginger and Clove Oils on Physiological Responses in Streptozotocin-Induced Diabetic Rats. INT J PHARMACOL 2006. [DOI: 10.3923/ijp.2007.34.40] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Medeiros FJ, Aguila MB, Mandarim-de-Lacerda CA. Renal cortex remodeling in streptozotocin-induced diabetic spontaneously hypertensive rats treated with olive oil, palm oil and fish oil from Menhaden. Prostaglandins Leukot Essent Fatty Acids 2006; 75:357-65. [PMID: 16919431 DOI: 10.1016/j.plefa.2006.06.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2005] [Revised: 06/08/2006] [Accepted: 06/22/2006] [Indexed: 01/31/2023]
Abstract
We studied the effects of edible oils intake on the renal cortical structure of streptozotocin-induced diabetic (Db) and non-diabetic spontaneously hypertensive rats (SHR). Male SHR divided into 5 groups were studied during 6 weeks: one non-diabetic SHR group and four diabetic SHR groups (three groups received by gavage olive, palm or fish oil). Kidneys were analyzed by light microscopy and stereology. Oils intake did not change the plasma glucose levels. The blood pressure (BP) was lower in SHR-Db than in SHR, but SHR-Db-fish oil showed the lowest BP. Creatinine clearance was different between diabetic SHR and non-diabetic SHR, but not between treated SHR-Db and untreated SHR-Db. The renal cortex showed scars surrounding obsolete glomeruli with inflammatory infiltrate mainly in untreated SHR-Db. The olive oil, palm oil and mainly fish oil intake retard the usual loss of glomeruli and attenuate the renal cortex adverse remodeling of Db and non-Db SHR.
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Affiliation(s)
- Fernanda J Medeiros
- Laboratory of Morphometry and Cardiovascular Morphology, State University of Rio de Janeiro (UERJ), Rio de Janeiro RJ 20551-030, Brazil
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Sugaru E, Nakagawa T, Ono-Kishino M, Nagamine J, Tokunaga T, Kitoh M, Hume WE, Nagata R, Taiji M. Enhanced effect of combined treatment with SMP-534 (antifibrotic agent) and losartan in diabetic nephropathy. Am J Nephrol 2006; 26:50-8. [PMID: 16508247 DOI: 10.1159/000091786] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2005] [Accepted: 12/29/2005] [Indexed: 12/18/2022]
Abstract
BACKGROUND/AIMS Diabetic nephropathy is now the most common cause of end-stage renal disease. It is also clear that the current therapy, angiotensin II blockage, cannot prevent the progression of diabetic nephropathy. We had previously demonstrated that an antifibrotic agent, SMP-534, reduced extracellular matrix production induced by transforming growth factor-beta in vitro, and that SMP-534 prevented renal fibrosis and urinary albumin in diabetic db/db mice via a nonantihypertensive mechanism. We expected that combined use of SMP-534 and losartan would produce a more highly renoprotective action. METHODS We examined the effects of combined treatment with SMP-534 and losartan on urinary albumin and glomerular fibrosis in db/db mice. Diet containing these agents was provided from age 9 to 25 weeks. Blood and urine analyses were performed at 8, 17, and 25 weeks. At the end of the study, kidney tissues were histologically analyzed. RESULTS SMP-534 significantly suppressed an increase in urinary albumin excretion and ameliorated the progression of glomerular fibrosis in db/db mice, whereas losartan did not. Combined treatment with SMP-534 and losartan markedly prevented the increase of urinary albumin excretion compared with treatment with either SMP-534 or losartan alone. In contrast, renal histological analysis revealed that combined treatment did not significantly prevent an increase of mesangial expansion in the kidney compared with treatment with SMP-534 alone. CONCLUSION A combination of the two agents, SMP-534 and losartan, might be a valuable therapeutic approach for the treatment of diabetic nephropathy.
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Affiliation(s)
- Eiji Sugaru
- Dainippon Sumitomo Pharma Co., Ltd., Drug Research Division, Pharmacology Research Laboratories, Kasugadenaka, Osaka, Japan
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