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Adepoju FO, Sokolova KV, Gette IF, Danilova IG, Tsurkan MV, Mondragon AC, Kovaleva EG, Miranda JM. Protective Effect of Betulin on Streptozotocin-Nicotinamide-Induced Diabetes in Female Rats. Int J Mol Sci 2024; 25:2166. [PMID: 38396842 PMCID: PMC10888537 DOI: 10.3390/ijms25042166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 02/03/2024] [Accepted: 02/08/2024] [Indexed: 02/25/2024] Open
Abstract
Type 2 diabetes is characterized by hyperglycemia and a relative loss of β-cell function. Our research investigated the antidiabetic potential of betulin, a pentacyclic triterpenoid found primarily in birch bark and, intriguingly, in a few marine organisms. Betulin has been shown to possess diverse biological activities, including antioxidant and antidiabetic activities; however, no studies have fully explored the effects of betulin on the pancreas and pancreatic islets. In this study, we investigated the effect of betulin on streptozotocin-nicotinamide (STZ)-induced diabetes in female Wistar rats. Betulin was prepared as an emulsion, and intragastric treatments were administered at doses of 20 and 50 mg/kg for 28 days. The effect of treatment was assessed by analyzing glucose parameters such as fasting blood glucose, hemoglobin A1C, and glucose tolerance; hepatic and renal biomarkers; lipid peroxidation; antioxidant enzymes; immunohistochemical analysis; and hematological indices. Administration of betulin improved the glycemic response and decreased α-amylase activity in diabetic rats, although insulin levels and homeostatic model assessment for insulin resistance (HOMA-IR) scores remained unchanged. Furthermore, betulin lowered the levels of hepatic biomarkers (aspartate aminotransferase, alanine aminotransferase, and alpha-amylase activities) and renal biomarkers (urea and creatine), in addition to improving glutathione levels and preventing the elevation of lipid peroxidation in diabetic animals. We also found that betulin promoted the regeneration of β-cells in a dose-dependent manner but did not have toxic effects on the pancreas. In conclusion, betulin at a dose of 50 mg/kg exerts a pronounced protective effect against cytolysis, diabetic nephropathy, and damage to the acinar pancreas and may be a potential treatment option for diabetes.
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Affiliation(s)
- Feyisayo O. Adepoju
- Department of Technology for Organic Synthesis, Institute of Chemical Technology, Ural Federal University, Mira 19, 620002 Yekaterinburg, Russia; (F.O.A.); (K.V.S.); (I.F.G.); (I.G.D.)
| | - Ksenia V. Sokolova
- Department of Technology for Organic Synthesis, Institute of Chemical Technology, Ural Federal University, Mira 19, 620002 Yekaterinburg, Russia; (F.O.A.); (K.V.S.); (I.F.G.); (I.G.D.)
- Institute of Immunology and Physiology, Russian Academy of Sciences, 620049 Yekaterinburg, Russia
| | - Irina F. Gette
- Department of Technology for Organic Synthesis, Institute of Chemical Technology, Ural Federal University, Mira 19, 620002 Yekaterinburg, Russia; (F.O.A.); (K.V.S.); (I.F.G.); (I.G.D.)
- Institute of Immunology and Physiology, Russian Academy of Sciences, 620049 Yekaterinburg, Russia
| | - Irina G. Danilova
- Department of Technology for Organic Synthesis, Institute of Chemical Technology, Ural Federal University, Mira 19, 620002 Yekaterinburg, Russia; (F.O.A.); (K.V.S.); (I.F.G.); (I.G.D.)
- Institute of Immunology and Physiology, Russian Academy of Sciences, 620049 Yekaterinburg, Russia
| | | | - Alicia C. Mondragon
- Departamento de Química Analítica, Nutrición y Bromatología, Campus Terra, Universidade da Santiago de Compostela, 27002 Lugo, Spain;
| | - Elena G. Kovaleva
- Department of Technology for Organic Synthesis, Institute of Chemical Technology, Ural Federal University, Mira 19, 620002 Yekaterinburg, Russia; (F.O.A.); (K.V.S.); (I.F.G.); (I.G.D.)
| | - Jose Manuel Miranda
- Departamento de Química Analítica, Nutrición y Bromatología, Campus Terra, Universidade da Santiago de Compostela, 27002 Lugo, Spain;
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Potential Anti-inflammatory, Hypoglycemic, and Hypolipidemic Activities of Alpha-Pinene in Diabetic Rats. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.12.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Ezeonwumelu IJ, Mode AM, Magaji UF, Nzoniwu NA, Tangaza MH, Tanimu FI, Dandare SU. Coadministration of L-alanine and L-glutamine ameliorate blood glucose levels, biochemical indices and histological features in alloxan-induced diabetic rats. J Food Biochem 2022; 46:e14420. [PMID: 36125865 DOI: 10.1111/jfbc.14420] [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: 04/25/2022] [Revised: 08/31/2022] [Accepted: 09/06/2022] [Indexed: 01/13/2023]
Abstract
We evaluated the effects of supplementation of L-alanine and L-glutamine on blood glucose levels and biochemical parameters in alloxan-induced diabetic rat. Forty-nine animals were distributed into seven equal groups. Except for the non-diabetic control, diabetes was induced in all groups by intravenous alloxan injection followed by daily supplementation with amino acids for 14 days. Weight and blood glucose were monitored during supplementation, while biochemical parameters such as liver and renal functions, lipid profile, and antioxidant markers were evaluated post-intervention. A significant increase (p < .05) in weight and decrease in blood glucose were observed in the amino acid(s) treated groups. The supplementation with both amino acids restored important tissue antioxidants, liver and kidney functions and rescued islets cells degeneration. Histopathological examinations of important tissues showed the restoration of alloxan-induced physiopathological changes by the amino acids. Thus, these amino acids might serve as nutraceuticals for the management and treatment of diabetes. PRACTICAL APPLICATIONS: The discovery and production of antidiabetic bioactive compounds are often challenging, and the existing antidiabetic drugs are expensive. Amino acids are key regulators of glucose metabolism, insulin secretion, and insulin sensitivity; thus, they can play a crucial role in alleviating diabetes. Here, we present findings that strongly suggest the potential of pure amino acids (L-alanine and L-glutamine) for the management and treatment of diabetes. We show that these amino acids, when supplemented singly or coadministered can lower blood glucose levels and restore several other biochemical parameters implicated in diabetes. Hence, these cheap amino acids may be consumed as nutraceuticals or food supplements by diabetics for the treatment/management of diabetes. Foods rich in these amino acids may also be consumed as part of the diet of diabetic patients.
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Affiliation(s)
- Ifeanyi J Ezeonwumelu
- IrsiCaixa - AIDS Research Institute, Hospital Germans Trias i Pujol, Universitat Autònoma de Barcelona, Badalona, Spain
| | - Abduljalil M Mode
- Central Advanced Science Laboratory Complex, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Umar F Magaji
- Department of Chemistry, Biochemistry Unit, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - Nnamdi A Nzoniwu
- Abu Dhabi Vocational Education and Training Institute (ADVETI), Mohammed Bin Zayed City, Abu Dhabi, UAE
| | - Muhamad H Tangaza
- Department of Biochemistry, Faculty of Science, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Fatima I Tanimu
- Department of Biochemistry, Faculty of Science, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Shamsudeen U Dandare
- Department of Biochemistry, Faculty of Science, Usmanu Danfodiyo University, Sokoto, Nigeria.,School of Natural and Built Environment, Queen's University Belfast, Belfast, UK
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Accelerated Generation of Extra-Islet Insulin-Producing Cells in Diabetic Rats, Treated with Sodium Phthalhydrazide. Int J Mol Sci 2022; 23:ijms23084286. [PMID: 35457103 PMCID: PMC9044743 DOI: 10.3390/ijms23084286] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 04/01/2022] [Accepted: 04/11/2022] [Indexed: 12/19/2022] Open
Abstract
β-cells dysfunction plays an important role in the pathogenesis of type 2 diabetes (T2D), partially may be compensated by the generation of extra-islet insulin-producing cells (IPCs) in pancreatic acini and ducts. Pdx1 expression and inflammatory level are suggested to be involved in the generation of extra-islet IPCs, but the exact reasons and mechanisms of it are unclear. Macrophages are key inflammatory mediators in T2D. We studied changes in mass and characteristics of extra-islet IPCs in rats with a streptozotocin-nicotinamide model of T2D and after i.m. administration of 20 daily doses of 2 mg/kg b.w. sodium aminophthalhydrazide (APH). Previously, we found that APH modulates macrophage production and increases the proliferative activity of pancreatic β-cells. Expressions of insulin and Pdx1, as well as F4/80 (macrophage marker), were detected at the protein level by immunohistochemistry analysis, the concentration of pro- and anti-inflammatory cytokines in blood and pancreas—by ELISA. Diabetic rats treated with APH showed an increasing mass of extra-islet IPCs and the content of insulin in them. The presence of Pdx1+ cells in the exocrine pancreas also increased. F4/80+ cell reduction was accompanied by increasing TGF-β1 content. Interestingly, during the development of diabetes, the mass of β-cells decreased faster than the mass of extra-islet IPCs, and extra-islet IPCs reacted to experimental T2D differently depending on their acinar or ductal location.
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Ajirioghene AE, Ghasi SI, Ewhre LO, Adebayo OG, Asiwe JN. Anti-diabetogenic and in vivo antioxidant activity of ethanol extract of Dryopteris dilatata in alloxan-induced male Wistar rats. Biomarkers 2021; 26:718-725. [PMID: 34612093 DOI: 10.1080/1354750x.2021.1990408] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 10/02/2021] [Indexed: 12/12/2022]
Abstract
AIMS Oxido-inflammatory stress has been implicated as the main targets in alleviating diabetic complications induced by hyperglycaemia. Dryopteris dilatata: a bioactive plant serves great medicinal benefits in ethnopharmacology to ameliorate pathological conditions. This study investigated the protective effects of ethanol extract of Dryopteris dilatata (EEDD) in alloxan-induced diabetic rats through mechanism involving inhibition of oxidative stress and liver and kidney inflammatory markers. METHODOLOGY Male Wistar rats were made diabetic via alloxan monohydrate (100 mg/kg) administration intraperitoneally. Diabetic rats were post-treated with EEDD (800 mg/kg) and Metformin (50 mg/kg) orally for two weeks. Fasting blood sugar (FBS), body and organ weight change, markers of oxidative stress, liver and kidney inflammation were evaluated. RESULTS Our results revealed that EEDD significantly reduced alloxan-induced hyperglycaemia in the diabetic rats after 5, 10 and 15 days of treatment. Markers of oxidative injury were also significantly ameliorated in the pancreas, liver and kidney of the diabetic rats following treatment with EEDD. However, liver and kidney injury markers were significantly attenuated with marked decreased organ weight in the diabetic rats after treatment with EEDD. CONCLUSION Here in, we found that Dryopteris dilatata could be used as nutraceuticals in the prevention and treatment of diabetes and its related complications through positively modulating oxidative stress and liver and kidney inflammatory markers.
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Affiliation(s)
- Akpotu E Ajirioghene
- Department of Pharmacology, Faculty of Basic Medical Sciences, PAMO University of Medical Sciences, Port-Harcourt, Nigeria
| | - Samuel I Ghasi
- Department of Pharmacology and Therapeutics, College of Medicine, University of Nigeria, Nsuka, Nigeria
| | - Lawrence O Ewhre
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Delta State University, Abraka, Nigeria
| | - Olusegun G Adebayo
- Neurophysiology Unit, Department of Physiology, Faculty of Basic Medical Sciences, PAMO University of Medical Sciences, Port-Harcourt, Nigeria
| | - Jerome N Asiwe
- Neurophysiology Unit, Department of Physiology, Faculty of Basic Medical Sciences, PAMO University of Medical Sciences, Port-Harcourt, Nigeria
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Remez VP, Danilova IG, Gette IF, Brilliant SA, Pozdina VA. Antianemic Effect of a Composition Containing Iron-Potassium-Sodium Hexacyanoferrate, Iron Sulfate, Potassium Sulfate, and Pharmacopoeial Microcellulose. Pharm Chem J 2021. [DOI: 10.1007/s11094-021-02426-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Ivanov AN, Lagutina DD, Saveleva MS, Popyhova EB, Stepanova TV, Savkina AA, Pylaev TE, Kuznetsova NA. Effect of liraglutide on microcirculation in rat model with absolute insulin deficiency. Microvasc Res 2021; 138:104206. [PMID: 34119534 DOI: 10.1016/j.mvr.2021.104206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 06/01/2021] [Accepted: 06/07/2021] [Indexed: 11/25/2022]
Abstract
INTRODUCTION The investigations of angiotropic effects of liraglutide are an issue of significant scientific and practical interest. The successful application of liraglutide has been shown in glycemic control in patients with the type 2 diabetes mellitus (DM), but the effect of liraglutide in patients with type 1 DM has not been completely studied yet in clinical practice. Therefore, the present study is aimed to investigate the effect of liraglutide which is agonist of glucagon-like peptide-1 receptors, on microcirculation in white outbred rats with the alloxan-induced diabetes. MATERIALS AND METHODS The study was performed with 70 white outbred rats, divided into 4 groups: 1) control group (intact animals (Control)); 2) comparison group (diabetes mellitus (DM)) - animals with the alloxan-induced diabetes; 3) experimental group no. 1 (liraglutide low dose (LLD)) - animals with the alloxan-induced diabetes, which were injected by liraglutide at dosage of 0.2 mg/kg of animal weight per a day; 4) experimental group no. 2 (liraglutide high dose (LHD)) - animals with the alloxan-induced diabetes, which were injected by liraglutide at dosage of 0.4 mg/kg of animal weight per a day. The carbohydrate metabolism disorders, the microcirculation of posterior paw skin, as well as the concentration of catecholamines and markers of endothelial alteration in blood were estimated at the 42nd day of the experiment in the comparison and experimental groups. RESULTS It was found that the correction of carbohydrate metabolism by liraglutide is succeeded by the normalization of skin perfusion of posterior paw skin of the experimental animals. Recovery of microcirculation is associated with a decrease in vascular tone and stimulation of endothelium-dependent vasodilation, caused by simultaneous decrease of catecholamines, endothelin-1 and asymmetric dimethylarginine (ADMA) concentrations in blood serum. At the same time, the administration of liraglutide on the background of insulin-deficiency results in decrease of endothelial cell alteration markers concentration in blood, such as sE-selectin, syndecan-1, and vascular endothelial growth factor (VEGF). CONCLUSION Administration of liraglutide leads to the normalization of the carbohydrate metabolism simultaneously with the correction of microcirculation in rats with the absolute insulin deficiency. The demonstrated recovery of microcirculation by liraglutide, which represents an analogue of glucagon-like peptide-1, provides new prospects for its approval as a potential drug for pathogenetic correction of microcirculatory disorders in patients with the type 1 DM.
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Affiliation(s)
- Alexey N Ivanov
- Saratov State Medical University named after V. I. Razumovsky, Bolshaya Kazachya 112, Saratov 410012, Russia
| | - Daria D Lagutina
- Saratov State Medical University named after V. I. Razumovsky, Bolshaya Kazachya 112, Saratov 410012, Russia
| | - Mariia S Saveleva
- Saratov State University, 83 Astrakhanskaya, Saratov 410012, Russia.
| | - Era B Popyhova
- Saratov State Medical University named after V. I. Razumovsky, Bolshaya Kazachya 112, Saratov 410012, Russia
| | - Tatyana V Stepanova
- Saratov State Medical University named after V. I. Razumovsky, Bolshaya Kazachya 112, Saratov 410012, Russia
| | - Angelina A Savkina
- Saratov State Medical University named after V. I. Razumovsky, Bolshaya Kazachya 112, Saratov 410012, Russia
| | - Timofey E Pylaev
- Saratov State Medical University named after V. I. Razumovsky, Bolshaya Kazachya 112, Saratov 410012, Russia
| | - Natalia A Kuznetsova
- Saratov State Medical University named after V. I. Razumovsky, Bolshaya Kazachya 112, Saratov 410012, Russia
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Duru KC, Mukhlynina EA, Moroz GA, Gette IF, Danilova IG, Kovaleva EG. Anti-diabetic effect of isoflavone rich kudzu root extract in experimentally induced diabetic rats. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.103922] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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Danilova IG, Shafigullina ZA, Gette IF, Sencov VG, Medvedeva SY, Abidov MT. Accelerated liver recovery after acute CCl 4 poisoning in rats treated with sodium phthalhydrazide. Int Immunopharmacol 2020; 80:106124. [PMID: 31927508 DOI: 10.1016/j.intimp.2019.106124] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 12/07/2019] [Accepted: 12/10/2019] [Indexed: 12/23/2022]
Abstract
Pharmacotherapy of hepatobiliary disorders is an important issue due to the high prevalence of liver failure, toxic and viral hepatitis and cirrhosis. The number of stimuli that can potentially induce or accelerate liver recovery is limited; in our study we selected sodium phthalhydrazide, which has been found to promote liver regeneration after partial hepatectomy. We examined the effects of phthalhydrazide on liver morphometric, histological and biochemical parameters in rats intoxicated with CCl4. Accelerated liver recovery after CCl4 intoxication in phthalhydrazide-treated animals was evidenced by increased number of liver sinusoidal cells, reduced focal necrosis of hepatocytes and reduced perifocal leukocyte infiltration. Decreased plasma levels of pro-inflammatory cytokines TNF-α and IL-18 and decreased concentrations of IL-6 and IFN-γ in liver homogenates were associated with reduced severity of cholestasis and normalized hepatic protein synthesis in CCl4-intoxicated rats exposed to phthalhydrazide. Anti-inflammatory and immunomodulating properties of phthahlhydrazide can be an important factor contributing to accelerated liver recovery at early stages of acute CCl4-toxic liver impairment.
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Affiliation(s)
- Irina G Danilova
- Institute of Immunology and Physiology of the Ural Branch of the RAS, Yekaterinburg, Russian Federation; Ural Federal University Named After the First President of Russia B.N. Yeltsin, Yekaterinburg, Russian Federation.
| | - Zlata A Shafigullina
- Institute of Immunology and Physiology of the Ural Branch of the RAS, Yekaterinburg, Russian Federation; Ural Federal University Named After the First President of Russia B.N. Yeltsin, Yekaterinburg, Russian Federation
| | - Irina F Gette
- Institute of Immunology and Physiology of the Ural Branch of the RAS, Yekaterinburg, Russian Federation; Ural Federal University Named After the First President of Russia B.N. Yeltsin, Yekaterinburg, Russian Federation
| | - Valentin G Sencov
- Federal State Budget Educational Institution of Higher Education «Ural State Medical University» of the Ministry of Health of the Russian Federation, Yekaterinburg, Russian Federation
| | - Svetlana Yu Medvedeva
- Institute of Immunology and Physiology of the Ural Branch of the RAS, Yekaterinburg, Russian Federation; Ural Federal University Named After the First President of Russia B.N. Yeltsin, Yekaterinburg, Russian Federation
| | - Musa T Abidov
- Institute of Immunopathology and Preventive Medicine, Povsetova ulica 29, 1000 Lublana, Slovenia
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Klyueva Y, Danilova I, Emelianov V, Gette I, Trofimova E. Morphofunctional condition of the pancreatic insular apparatus in old rats with alloxan-induced diabetes and its correction with lipoic acid. BIO WEB OF CONFERENCES 2020. [DOI: 10.1051/bioconf/20202202020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The concentration of glucose and glycosylated hemoglobin in the blood of animals increases as a result of physiological aging. This is due to damage to the pancreatic insular apparatus and a decrease in the number and functioning of active β-cells. The development of alloxan-induced diabetes in old rats is characterized by a decrease in the number of islets of Langerhans, an enlargement of the preserved islets, and a sharp decrease in the number of active endocrine cells. The injection of lipoic acid partially corrected the morphofunctional condition of the islets of Langerhans and the biochemical values of the animals’ peripheral blood.
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Ivanov AN, Popyhova EB, Stepanova TV, Pronina EA, Lagutina DD. Changes in microcirculation induced by autotransplantation of skin flaps in experimental diabetes mellitus rats. ACTA ACUST UNITED AC 2019. [DOI: 10.24884/1682-6655-2019-18-4-72-80] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Introduction. Micro- and macroangiopathies significantly reduce the duration and quality of life for diabetes mellitus (DM) patients, which determines the relevance of developing new ways to treat them, including non-drug ones. One of such methods is the autotransplantation of full-thickness skin flap providing a distant stimulating effect on microcirculation.The aim of the study was to investigate the influence of skin flap autotransplantation on microcirculation at alloxan insulin deficiency in white rats.Material and methods. The studies were carried out on 60 male scrub rats divided into the following groups: the control group, the comparison group (alloxan diabetes rats), the experimental group consisting of alloxan diabetes animals which had skin flap autotransplantations performed on them. Skin microcirculation (MC) of the dorsum of the feet was studied by laser Doppler flowmetry.Results. Alloxan insulin deficiency caused a violation of the MC in rats which manifested by a decrease in perfusion of the skin of the dorsum of the foot in association with a decrease in the amplitudes of endothelial and neurogenic oscillations. On the 42nd day of the experiment in alloxan diabetes animals which had skin flap autotransplantations performed on them the statistically significant increase (p=0.000001) in the perfusion index by 43 % was observed attesting to microcirculation improvment. This was accompanied by an increase in the normalized amplitudes value of endothelial (by 44 %, р=0.000047) and neurogenic (by 20 %, р=0.019515) perfusion fluctuations relative to rats of the comparison group.Conclusions. It can be concluded that skin flap autotransplantation has a positive effect on the state of MC in the feet in experimental diabetes rats due to the improvement of tissue perfusion and modulation of its activity.
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Affiliation(s)
- A. N. Ivanov
- Saratov State Medical University named after V. I. Razumovsky
| | - E. B. Popyhova
- Saratov State Medical University named after V. I. Razumovsky
| | - T. V. Stepanova
- Saratov State Medical University named after V. I. Razumovsky
| | - E. A. Pronina
- Saratov State Medical University named after V. I. Razumovsky
| | - D. D. Lagutina
- Saratov State Medical University named after V. I. Razumovsky
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Repetto EM, Wiszniewski M, Bonelli AL, Vecino CV, Martinez Calejman C, Arias P, Cymeryng CB. Impaired HPA axis function in diabetes involves adrenal apoptosis and phagocytosis. Endocrine 2019; 63:602-614. [PMID: 30242601 DOI: 10.1007/s12020-018-1755-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 09/08/2018] [Indexed: 11/26/2022]
Abstract
PURPOSE The aim of the present study was to analyze the involvement of oxidative stress and inflammation in the modulation of glucocorticoid production in the adrenal cortex of diabetic rats. METHODS Male Wistar rats were treated with or without streptozotocin (STZ, an insulinopenic model of diabetes) and either α-lipoic (90 mg/kg ip.), α-tocopherol (200 mg/kg po.) or with STZ and supplemented with insulin (STZ + INS: 2.5U/day) for 4 weeks. Oxidative/nitrosative stress parameters and antioxidant enzymes were determined in adrenocortical tissues. Apoptosis and macrophage activation were evaluated by immunohistochemistry (TUNEL and ED1+). Basal and ACTH-stimulated corticosterone production were assessed by RIA and plasma ACTH levels were determined by an immunometric assay. RESULTS Diabetic rats showed a diminished response to exogenous ACTH stimulation along with higher basal corticosterone and lower plasma ACTH levels. In the adrenal cortex we determined an increase in the levels of lipoperoxides, S-nitrosothiols, nitric oxide synthase activity and nitro-tyrosine modified proteins while catalase activity and heme oxygenase-1 expression levels were also elevated. Antioxidant treatments were effective in the prevention of these effects, and in the increase in the number of apoptotic and phagocytic (ED1+) cells detected in diabetic rats. No changes were observed in the STZ + INS group. CONCLUSIONS Generation of oxidative/nitrosative stress in the adrenal cortex of diabetic rats leads to the induction of apoptosis and the activation of adrenocortical macrophages and is associated with an elevated basal corticosteronemia and the loss of the functional capacity of the gland.
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Affiliation(s)
- Esteban M Repetto
- Departamento de Bioquímica Clínica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina.
- Facultad de Medicina, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Centro de Estudios Farmacológicos y Botánicos (CEFYBO), Laboratorio de Endocrinología Molecular (LEM), Universidad de Buenos Aires, Buenos Aires, Argentina.
| | - Morena Wiszniewski
- Facultad de Medicina, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Centro de Estudios Farmacológicos y Botánicos (CEFYBO), Laboratorio de Endocrinología Molecular (LEM), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Ana L Bonelli
- Facultad de Medicina, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Centro de Estudios Farmacológicos y Botánicos (CEFYBO), Laboratorio de Endocrinología Molecular (LEM), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Carolina V Vecino
- Facultad de Medicina, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Centro de Estudios Farmacológicos y Botánicos (CEFYBO), Laboratorio de Endocrinología Molecular (LEM), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Camila Martinez Calejman
- Facultad de Medicina, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Centro de Estudios Farmacológicos y Botánicos (CEFYBO), Laboratorio de Endocrinología Molecular (LEM), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Pablo Arias
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional de Rosario, Rosario, Argentina
| | - Cora B Cymeryng
- Facultad de Medicina, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Centro de Estudios Farmacológicos y Botánicos (CEFYBO), Laboratorio de Endocrinología Molecular (LEM), Universidad de Buenos Aires, Buenos Aires, Argentina
- Departamento de Bioquímica Humana, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
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Recruitment of macrophages and bone marrow stem cells to regenerating liver promoted by sodium phthalhydrazide in mice. Biomed Pharmacother 2019; 110:594-601. [DOI: 10.1016/j.biopha.2018.07.086] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Revised: 07/17/2018] [Accepted: 07/17/2018] [Indexed: 12/15/2022] Open
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Yin P, Wang Y, Yang L, Sui J, Liu Y. Hypoglycemic Effects in Alloxan-Induced Diabetic Rats of the Phenolic Extract from Mongolian Oak Cups Enriched in Ellagic Acid, Kaempferol and Their Derivatives. Molecules 2018; 23:molecules23051046. [PMID: 29710864 PMCID: PMC6100579 DOI: 10.3390/molecules23051046] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 04/25/2018] [Accepted: 04/28/2018] [Indexed: 12/19/2022] Open
Abstract
Our previous reports showed that crude extract prepared with 50% ethanol (ethanol crude extract, ECE) from Mongolian oak cups possessed excellent in vitro antioxidant capacities as well as inhibitory activities against α-glucosidase, α-amylase and protein glycation caused by its enrichment in phenolics, including mainly ellagic acid, kaempferol and their derivatives. Nevertheless, few in vivo studies on antidiabetic activities of these phenolics were conducted. The present study investigated hypoglycemic effects with normal and diabetic rats being administrated orally without or with ECE at 200 and 800 mg/kg for 15 days. In normal rats, no significant differences were exhibited after ECE administration in body weight, fasting blood glucose level, levels of cholesterol, triglyceride, LDL and AST in serum, organ indexes, and levels of GSH and MDA in organs. In diabetic rats, the fasting blood glucose level, indexes of heart and liver, and levels of cholesterol and triglyceride in serum and MDA in heart tissue were significantly decreased. Moreover, HDL levels in serum and SOD activities in the four organs of diabetic rats were significantly improved after ECE administration at 800 mg/kg. Thus, in addition to inhibiting α-glucosidase, α-amylase and protein glycation reported previously, oak cups might contain novel dietary phytonutrients in preventing abnormal changes in blood glucose and lipid profile and attenuating oxidant stress in vivo. The results also implied that it is ellagic acid, kaempferol and their derivatives enriched in ECE that might play vital roles in managing type 1 as well as type 2 diabetes.
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Affiliation(s)
- Peipei Yin
- College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China.
| | - Yu Wang
- School of Nature Conservation, Beijing Forestry University, Beijing 100083, China.
| | - Lingguang Yang
- College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China.
| | - Jinling Sui
- School of Nature Conservation, Beijing Forestry University, Beijing 100083, China.
| | - Yujun Liu
- College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China.
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