701
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A single dose of beetroot juice improves endothelial function but not tissue oxygenation in pregnant women: a randomised clinical trial. Br J Nutr 2018; 120:1006-1013. [PMID: 30229712 DOI: 10.1017/s0007114518002441] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Beetroot juice (BJ) consumption has been associated with improved cardiovascular health owing to an increase in NO bioconversion. This study evaluates the effect of BJ consumption on macrovascular endothelial function (flow-mediated dilation (FMD)) and muscle oxygen saturation (StO2) parameters in pregnant women within a randomised, crossover, double-blind design in which twelve pregnant women consumed a single dose (140 ml) of BJ or placebo (PLA). Urinary nitrate was assessed before (T0) and 150 min after BJ/PLA consumption. FMD was used to evaluate macrovascular endothelial function, and near-IR spectroscopy was used to evaluate muscle StO2 parameters during the occlusion and reperfusion phases, which were taken at baseline (PRE) and 120 and 140 min after BJ/PLA consumption, respectively. A significant increase in urinary nitrate was observed at 150 min after BJ consumption when compared with T0 (BJ: 0·20 (sd 0·13) v. T0: 0·02 (sd 0·00), P=0·000) and PLA intervention (PLA: 0·02 (sd 0·00), P=0·001). FMD improved after BJ consumption when compared with PRE (BJ: 11·00 (sd 1·67) v. PRE: 5·53 (sd 1·17), P=0·000) and PLA (5·34 (sd 1·31), P=0·000). No significant difference between PLA and PRE in FMD (P=1·000) was observed. In StO2 parameters, a difference was not observed after BJ consumption compared with PRE and PLA intervention. The data demonstrate that a single dose of 140 ml of BJ consumption improves macrovascular endothelial function, but not StO2 parameters.
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702
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Willson C, Watanabe M, Tsuji-Hosokawa A, Makino A. Pulmonary vascular dysfunction in metabolic syndrome. J Physiol 2018; 597:1121-1141. [PMID: 30125956 DOI: 10.1113/jp275856] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 07/30/2018] [Indexed: 12/20/2022] Open
Abstract
Metabolic syndrome is a critically important precursor to the onset of many diseases, such as cardiovascular disease, and cardiovascular disease is the leading cause of death worldwide. The primary risk factors of metabolic syndrome include hyperglycaemia, abdominal obesity, dyslipidaemia, and high blood pressure. It has been well documented that metabolic syndrome alters vascular endothelial and smooth muscle cell functions in the heart, brain, kidney and peripheral vessels. However, there is less information available regarding how metabolic syndrome can affect pulmonary vascular function and ultimately increase an individual's risk of developing various pulmonary vascular diseases, such as pulmonary hypertension. Here, we review in detail how metabolic syndrome affects pulmonary vascular function.
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Affiliation(s)
- Conor Willson
- Department of Physiology, University of Arizona, Tucson, AZ, USA
| | - Makiko Watanabe
- Department of Physiology, University of Arizona, Tucson, AZ, USA
| | | | - Ayako Makino
- Department of Physiology, University of Arizona, Tucson, AZ, USA
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703
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Antidiabetic Activities of Hydromethanolic Leaf Extract of Calpurnia aurea (Ait.) Benth. Subspecies aurea (Fabaceae) in Mice. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:3509073. [PMID: 30271452 PMCID: PMC6151229 DOI: 10.1155/2018/3509073] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 08/03/2018] [Accepted: 08/27/2018] [Indexed: 11/18/2022]
Abstract
Diabetes mellitus is one of the largest global health problems demanding preventive and new therapeutic interventions. Currently, there is a need for safe, effective, and less costly antidiabetic medications, and investigating medicinal plants for new antidiabetic medication is an interesting research area. Thus, the present study was done to evaluate the antidiabetic activities of 80% methanolic leaf extract of Calpurnia aurea (Ait.) Benth. subspecies aurea (Fabaceae) in mice. Hypoglycemic and antihyperglycemic activity of the three doses (100mg/kg, 200 mg/kg, and 400 mg/kg) of crude hydromethanolic leaf extract was studied on normoglycemic, oral glucose loaded, and streptozotocin-induced diabetic mice models. The effect of the extract on body weight and diabetic dyslipidemia was also studied on streptozotocin-induced diabetic mice. Glibenclamide (5 mg/kg) was used as a standard drug in all cases. A glucose meter and an automated chemistry analyzer were used to measure blood glucose and serum lipid level respectively. Data were analyzed using one-way analysis of variance followed by Tukey's post hoc multiple comparison test. All the three doses of the plant extract (100mg/kg, 200 mg/kg, and 400 mg/kg) showed a significant (p<0.05) antihyperglycemic activity in the diabetic mice at the 7th and 14th day of repeated daily dose administration as compared to the negative diabetic control. But, the extract did not show significant blood glucose lowering activity in normoglycemic, oral glucose loaded, and diabetic mice after single dose administration, and it did not significantly improve the body weight loss and diabetic dyslipidemia of diabetic mice after repeated daily dose administration for 14 days. This study revealed that the hydromethanolic extract of Calpurnia aurea leaves possesses significant antihyperglycemic activity justifying the traditional use of the plant for diabetes.
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704
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Nyúl E, Kuzma M, Mayer M, Lakatos S, Almási A, Perjési P. HPLC study on Fenton-reaction initiated oxidation of salicylic acid. Biological relevance of the reaction in intestinal biotransformation of salicylic acid. Free Radic Res 2018; 52:1040-1051. [PMID: 30173586 DOI: 10.1080/10715762.2018.1517260] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Fenton-reaction initiated in vitro oxidation and in vivo oxidative biotransformation of salicylic acid was investigated by HPLC-UV-Vis method. By means of the developed high performance liquid chromatography (HPLC) method salicylic acid, catechol, and all the possible monohydroxylated derivatives of salicylic acid can be separated. Fenton oxidations were performed in acidic medium (pH 3.0) with two reagent molar ratios: (1) salicylic acid: iron: hydrogen peroxide 1:3:1 and (2) 1:0.3:1. The incubation samples were analysed at different time points of the reactions. The biological effect of elevated reactive oxygen species concentration on the intestinal metabolism of salicylic acid was investigated by an experimental diabetic rat model. HPLC-MS analysis of the in vitro samples revealed presence of 2,3- and 2,5-dihydroxybenzoic acids. The results give evidence for nonenzyme catalysed intestinal hydroxylation of xenobiotics.
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Affiliation(s)
- Eszter Nyúl
- a Institute of Pharmaceutical Chemistry , University of Pécs , Pécs , Hungary
| | - Mónika Kuzma
- a Institute of Pharmaceutical Chemistry , University of Pécs , Pécs , Hungary
| | - Mátyás Mayer
- b Department of Forensic Medicine , University of Pécs , Pécs , Hungary
| | - Sándor Lakatos
- a Institute of Pharmaceutical Chemistry , University of Pécs , Pécs , Hungary
| | - Attila Almási
- a Institute of Pharmaceutical Chemistry , University of Pécs , Pécs , Hungary
| | - Pál Perjési
- a Institute of Pharmaceutical Chemistry , University of Pécs , Pécs , Hungary
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705
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Wamique M, Ali W, Himanshu Reddy D, Waseem M, Vishwakarma P. Association of cholesteryl ester transferyl protein gene (G277A) polymorphism and risk prediction of type 2 diabetes mellitus: A case control study of Northern Indian population. Meta Gene 2018. [DOI: 10.1016/j.mgene.2018.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
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706
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Abdullah K, Alam MM, Iqbal Z, Naseem I. Therapeutic effect of vitamin B3 on hyperglycemia, oxidative stress and DNA damage in alloxan induced diabetic rat model. Biomed Pharmacother 2018; 105:1223-1231. [DOI: 10.1016/j.biopha.2018.06.085] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 06/14/2018] [Accepted: 06/14/2018] [Indexed: 02/05/2023] Open
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707
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Babiker M, Abbas T, Ahamed Mohammed ME, Rezigalla AA. Effectiveness of Gum Arabic With and Without Insulin on the Relieve of Some metabolic Complications of Diabetes Mellitus in Sprague-Dawley Rats. JOURNAL OF MEDICAL SCIENCES AND HEALTH 2018. [DOI: 10.46347/jmsh.2018.v04i02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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708
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da Silva JC, Muniz FWMG, Oballe HJR, Andrades M, Rösing CK, Cavagni J. The effect of periodontal therapy on oxidative stress biomarkers: A systematic review. J Clin Periodontol 2018; 45:1222-1237. [PMID: 30076616 DOI: 10.1111/jcpe.12993] [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: 02/20/2018] [Revised: 07/19/2018] [Accepted: 08/01/2018] [Indexed: 12/19/2022]
Abstract
AIM To systematically review the literature about the effect of periodontal treatment on oxidative stress (OxS) biomarkers. MATERIAL AND METHODS Three databases (PubMed, EMBASE, and Scopus) were searched up to February 2018. Clinical trials with a follow-up of at least 6 weeks after mechanical periodontal treatment were included. Due to the high heterogeneity among the units and indices of measurements used in the studies, a meta-analysis was not performed. RESULTS Overall, 3,199 studies were retrieved, of which 20 were included. Four studies were randomized clinical trials (RCT), and 16 studies were non-RCTs. The most common OxS biomarkers used were 8-hydroxydeoxiguanosine (8-OHdG), total oxidant status (TOS), and total antioxidant status (TAS). After treatment, most of the studies reported a decrease in 8-OHdG concentration in the gingival crevicular fluid (GCF) and saliva. In addition, the salivary concentration of this biomarker was similar to periodontally healthy patients. Periodontal therapy was effective in reducing TOS in GCF, saliva, and serum in most studies. TAS, however, responded inconsistently to the periodontal intervention. CONCLUSION Periodontal therapy reduces the levels of OxS biomarkers, even to values similar to those found in periodontally healthy individuals. Additional RCTs are warranted, as the information is mainly based on nonrandomized studies.
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Affiliation(s)
| | | | | | - Michael Andrades
- Experimental Research Center, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | | | - Juliano Cavagni
- Department of Periodontology, Federal University Rio Grande do Sul, Porto Alegre, Brazil
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709
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Rugerio-Escalona C, Ordaz-Pichardo C, Becerra-Martinez E, Cruz-López MDC, López-y-López VE, Mendieta-Moctezuma A, Maldonado-Mendoza IE, Jiménez-Montejo FE. "Diabetes and Metabolism Disorders Medicinal Plants: A Glance at the Past and a Look to the Future 2018": Antihyperglycemic Activity of Hamelia patens Jacq. Extracts. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2018; 2018:7926452. [PMID: 30224932 PMCID: PMC6129850 DOI: 10.1155/2018/7926452] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 06/21/2018] [Accepted: 07/31/2018] [Indexed: 12/15/2022]
Abstract
Diabetes is one the world's most widespread diseases, affecting over 327 million people and causing about 300,000 deaths annually. Despite great advances in prevention and therapy, existing treatments for this disorder have serious side effects. Plants used in traditional medicine represent a valuable source in the search for new medicinal compounds. Hamelia patens Jacq. has been used for treating diabetes and, so far, no reports have been made on the in vivo antihyperglycemic activity of this plant. The present study on H. patens aimed to test the antihyperglycemic effect of repeated administrations of the crude and fractional methanolic extracts (CME and FME, respectively) on rats with hyperglycemia induced by streptozotocin. After 10 administrations (20 days), each extract had lowered blood glucose to a normal level. The extracts produced effects similar to metformin. Of the five compounds identified by chromatographic analysis of the extracts, epicatechin and chlorogenic acid demonstrated antihyperglycemic effect. The antioxidant activity of the extracts was evidenced by their IC50 values (51.7 and 50.7 μg/mL, respectively). The LD50≥2000 mg/Kg suggests low toxicity for both CME and FME. Thus, considering that the antihyperglycemic and antioxidant effects of metformin and extracts from H. patens were comparable, the latter may be efficacious for treating diabetes.
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Affiliation(s)
- Catalina Rugerio-Escalona
- Centro de Investigación en Biotecnología Aplicada del Instituto Politécnico Nacional, Tlaxcala, Mexico
| | - Cynthia Ordaz-Pichardo
- Escuela Nacional de Medicina y Homeopatía del Instituto Politécnico Nacional, Ciudad de México, Mexico
| | - Elvia Becerra-Martinez
- Centro de Nanociencias y Micro y Nanotecnología del Instituto Politécnico Nacional, Ciudad de México, Mexico
| | | | - Victor E. López-y-López
- Centro de Investigación en Biotecnología Aplicada del Instituto Politécnico Nacional, Tlaxcala, Mexico
| | - Aarón Mendieta-Moctezuma
- Centro de Investigación en Biotecnología Aplicada del Instituto Politécnico Nacional, Tlaxcala, Mexico
| | - Ignacio E. Maldonado-Mendoza
- Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional, Unidad Sinaloa del Instituto Politécnico Nacional, Sinaloa, Mexico
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710
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Bissinger R, Bhuyan AAM, Qadri SM, Lang F. Oxidative stress, eryptosis and anemia: a pivotal mechanistic nexus in systemic diseases. FEBS J 2018; 286:826-854. [PMID: 30028073 DOI: 10.1111/febs.14606] [Citation(s) in RCA: 115] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 06/15/2018] [Accepted: 07/18/2018] [Indexed: 12/21/2022]
Abstract
The average lifespan of circulating erythrocytes usually exceeds hundred days. Prior to that, however, erythrocytes may be exposed to oxidative stress in the circulation which could cause injury and trigger their suicidal death or eryptosis. Oxidative stress activates Ca2+ -permeable nonselective cation channels in the cell membrane, thus, stimulating Ca2+ entry and subsequent cell membrane scrambling resulting in phosphatidylserine exposure and activation of Ca2+ -sensitive K+ channels leading to K+ exit, hyperpolarization, Cl- exit, and ultimately cell shrinkage due to loss of KCl and osmotically driven water. While the mechanistic link between oxidative stress and anemia remains ill-defined, several diseases such as diabetes, hepatic failure, malignancy, chronic kidney disease and inflammation have been identified to display both increased oxidative stress as well as eryptosis. Recent compelling evidence suggests that oxidative stress is an important perpetrator in accelerating erythrocyte loss in different systemic conditions and an underlying mechanism for anemia associated with these pathological states. In the present review, we discuss the role of oxidative stress in reducing erythrocyte survival and provide novel insights into the possible use of antioxidants as putative antieryptotic and antianemic agents in a variety of systemic diseases.
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Affiliation(s)
- Rosi Bissinger
- Department of Internal Medicine III, Eberhard-Karls-University Tübingen, Germany
| | - Abdulla Al Mamun Bhuyan
- Department of Vegetative & Clinical Physiology, Institute of Physiology, Eberhard-Karls-University Tübingen, Germany
| | - Syed M Qadri
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada.,Centre for Innovation, Canadian Blood Services, Hamilton, ON, Canada
| | - Florian Lang
- Department of Vegetative & Clinical Physiology, Institute of Physiology, Eberhard-Karls-University Tübingen, Germany.,Department of Molecular Medicine II, Heinrich Heine University, Düsseldorf, Germany
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711
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Giri B, Dey S, Das T, Sarkar M, Banerjee J, Dash SK. Chronic hyperglycemia mediated physiological alteration and metabolic distortion leads to organ dysfunction, infection, cancer progression and other pathophysiological consequences: An update on glucose toxicity. Biomed Pharmacother 2018; 107:306-328. [PMID: 30098549 DOI: 10.1016/j.biopha.2018.07.157] [Citation(s) in RCA: 186] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 07/15/2018] [Accepted: 07/31/2018] [Indexed: 02/09/2023] Open
Abstract
Chronic exposure of glucose rich environment creates several physiological and pathophysiological changes. There are several pathways by which hyperglycemia exacerbate its toxic effect on cells, tissues and organ systems. Hyperglycemia can induce oxidative stress, upsurge polyol pathway, activate protein kinase C (PKC), enhance hexosamine biosynthetic pathway (HBP), promote the formation of advanced glycation end-products (AGEs) and finally alters gene expressions. Prolonged hyperglycemic condition leads to severe diabetic condition by damaging the pancreatic β-cell and inducing insulin resistance. Numerous complications have been associated with diabetes, thus it has become a major health issue in the 21st century and has received serious attention. Dysregulation in the cardiovascular and reproductive systems along with nephropathy, retinopathy, neuropathy, diabetic foot ulcer may arise in the advanced stages of diabetes. High glucose level also encourages proliferation of cancer cells, development of osteoarthritis and potentiates a suitable environment for infections. This review culminates how elevated glucose level carries out its toxicity in cells, metabolic distortion along with organ dysfunction and elucidates the complications associated with chronic hyperglycemia.
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Affiliation(s)
- Biplab Giri
- Department of Physiology, University of Gour Banga, Mokdumpur, Malda 732103, India; Experimental Medicine and Stem Cell Research Laboratory, Department of Physiology, West Bengal State University, Barasat, Kolkata 700126, India.
| | - Sananda Dey
- Department of Physiology, University of Gour Banga, Mokdumpur, Malda 732103, India; Experimental Medicine and Stem Cell Research Laboratory, Department of Physiology, West Bengal State University, Barasat, Kolkata 700126, India
| | - Tanaya Das
- Experimental Medicine and Stem Cell Research Laboratory, Department of Physiology, West Bengal State University, Barasat, Kolkata 700126, India
| | - Mrinmoy Sarkar
- Experimental Medicine and Stem Cell Research Laboratory, Department of Physiology, West Bengal State University, Barasat, Kolkata 700126, India
| | - Jhimli Banerjee
- Department of Physiology, University of Gour Banga, Mokdumpur, Malda 732103, India
| | - Sandeep Kumar Dash
- Department of Physiology, University of Gour Banga, Mokdumpur, Malda 732103, India.
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712
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Chiu CD, Chiu YP, Lin CL, Ji HR, Shen CC, Lee HT, Chang C. Acetazolamide alleviates sequelae of hyperglycaemic intracerebral haemorrhage by suppressing astrocytic reactive oxygen species. Free Radic Res 2018; 52:1010-1019. [PMID: 30079794 DOI: 10.1080/10715762.2018.1508838] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Hyperglycaemia is associated with the poor outcome after intracerebral haemorrhage (ICH). Acetazolamide (AZA), a kind of carbonic anhydrogenase (CA) inhibitor, its effectiveness in ICH had been reported. However, the connections between AZA and ICH, especially in hyperglycaemia condition had never been defined. In this study, adult Sprague-Dawley rats were administered with vehicle or streptozotocin (STZ) to render them into normoglycaemic (NG) or hyperglycaemic (HG), respectively. Collagenase was then injected into the striatum. The NG or HG ICH rats treated with vehicle control or 5 mg/kg AZA (oral gavage) underwent haemorrhagic area assessments on the 1st, 4th, and 7th day after ICH. The coverage of pericytes was examined by immunohistochemistry. Reactive oxygen species (ROS) levels were assessed in mouse astrocyte cell line treated with vehicle or 20 μmol/L of AZA in culture media according to two different glucose concentrations. AZA reduced the haematoma size, improved neurobehavioral functions, suppressed astrocytic ROS production in vitro, and preserved cerebral pericytes coverage, which are even more remarkable in HG conditions. The present study indicates that AZA may alleviate some sequelae after ICH, especially in poorer prognostic HG rats through the suppression of astrocytic ROS production.
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Affiliation(s)
- Cheng-Di Chiu
- a School of Medicine , China Medical University , Taichung , Taiwan.,b Graduate Institute of Biomedical Science , China Medical University , Taichung , Taiwan.,c Department of Neurosurgery , China Medical University Hospital , Taichung , Taiwan.,d Stroke Center , China Medical University Hospital , Taichung , Taiwan
| | - You-Pen Chiu
- a School of Medicine , China Medical University , Taichung , Taiwan.,d Stroke Center , China Medical University Hospital , Taichung , Taiwan
| | - Cheng-Li Lin
- a School of Medicine , China Medical University , Taichung , Taiwan
| | - Hui-Ru Ji
- b Graduate Institute of Biomedical Science , China Medical University , Taichung , Taiwan.,d Stroke Center , China Medical University Hospital , Taichung , Taiwan
| | - Chiung-Chyi Shen
- e Department of Minimally Invasive Skull Base Neurosurgery , Neurological Institute, Taichung Veterans General Hospital , Taichung , Taiwan
| | - Hsu-Tung Lee
- f Department of Neurosurgical Oncology , Neurological Institute, Taichung Veterans General Hospital , Taichung , Taiwan
| | - Chen Chang
- g Institute of Biomedical Sciences, Academic Sinica , Taipei , Taiwan
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713
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Understanding the perspectives of forkhead transcription factors in delayed wound healing. J Cell Commun Signal 2018; 13:151-162. [PMID: 30088222 DOI: 10.1007/s12079-018-0484-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 08/01/2018] [Indexed: 01/20/2023] Open
Abstract
Wound healing is a complex overlapping biological process that involves a sequence of events coordinated by various cells, proteins, growth factors, cytokines and signaling molecules. Recent evidence indicates that forkhead box O1 (FOXO1) transcription factors play an important role in organizing these events to stimulate wound healing. The ubiquitously expressed forkhead box, class O (FOXO) transcription factors act as cell signaling molecules in various transcriptional processes that are involved in diverse cellular activities, including cell death, cell differentiation, DNA repair, apoptosis, and oxidative stress in response to stimuli, and interact with numerous proteins. Due to the activation of FOXO targeted genes, FOXOs are involved in maintaining the balance between oxidative stress and antioxidants. In humans, different isoforms of FOXO namely FOXO1, FOXO3, FOXO4 and FOXO6 are present, however only FOXO1 and FOXO3 possess biological functions such as morphogenesis, maintenance and tissue regeneration. This might make FOXOs an important therapeutic target to enhance wound healing in diabetes, and to avoid over scarring. In spite of extensive literature, little is known regarding the role of FOXO and its relationship in wound healing. This review provides a summary of FOXO proteins and their biological role in wound healing and oxidative stress.
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714
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Mustafa AG, Alfaqih MA, Al-Shboul O. The 4-hydroxynonenal mediated oxidative damage of blood proteins and lipids involves secondary lipid peroxidation reactions. Exp Ther Med 2018; 16:2132-2137. [PMID: 30186450 DOI: 10.3892/etm.2018.6419] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 05/25/2018] [Indexed: 12/17/2022] Open
Abstract
Lipid peroxidation is associated with several metabolic diseases. Lipid peroxidation causes cellular damage through reactive aldehyde species such as 4-hydroxyonenal (4-HNE). The exact mechanism(s) by which 4-HNE causes damage in the intravascular compartment is not yet exactly understood. Using an in vitro system, the damage induced by 4-HNE on the blood was investigated by measuring protein carbonyl groups and thiobarbituric acid reactive substances (TBARS) following 4-HNE treatment. The findings demonstrated that treatment with 4-HNE increased the carbonylation of protein and the formation of TBARS in the blood plasma. It was also tested whether phenelzine, a scavenger of aldehyde species, or U-83836E, a scavenger of lipid peroxy radicals, attenuated the damage caused by 4-HNE. It was demonstrated that phenelzine or U-83836E both mitigated the effects of 4-HNE on the proteins and the lipids of the blood plasma. The findings of the current study suggest that phenelzine, U-83836E or functionally similar therapeutics may prevent or treat diseases that involve an increased production of 4-HNE in the intravascular compartment.
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Affiliation(s)
- Ayman G Mustafa
- Department of Basic Medical Sciences, School of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan.,Department of Anatomy, School of Medicine, Qatar University, Doha, Qatar
| | - Mahmoud A Alfaqih
- Department of Physiology and Biochemistry, School of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Othman Al-Shboul
- Department of Physiology and Biochemistry, School of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
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715
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The protective effects of mangiferin on metabolic and organs functions in the adolescent rat model of alcohol abuse. J Funct Foods 2018. [DOI: 10.1016/j.jff.2018.04.056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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716
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Molehin OR, Oloyede OI, Adefegha SA. Streptozotocin-induced diabetes in rats: effects of White Butterfly (Clerodendrum volubile) leaves on blood glucose levels, lipid profile and antioxidant status. Toxicol Mech Methods 2018; 28:573-586. [PMID: 29781752 DOI: 10.1080/15376516.2018.1479476] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
White Butterfly (Clerodendrum volubile) leaf is commonly used in traditional medicine for the management of various diseases including diabetes without the full understanding of the scientific basis for its use. This study sought to evaluate the antihyperglycemic, antihyperlipidemic and antioxidant effect of C. volubile leaves in streptozotocin (STZ)-induced diabetic rats. Aqueous extract of C. volubile was prepared and its effect assessed on relevant enzymes associated with diabetes. Fifty male Wistar rats were randomly separated into 10 groups each containing five rats. The induction of diabetes in rats was by a single intraperitoneal injection of STZ (65 mg/kg body weight) while C. volubile extract was administered orally to diabetic and non-diabetic animals, at the doses of 50, 100 and 200 mg/kg body weight for 14 days. Metformin (100 mg/kg body weight) served as positive control. Clerodendrum volubile extract inhibited α-glucosidase (IC50 = 0.20 mg/ml) and α-amylase (IC50 = 0.58 mg/ml). Furthermore, administration of C. volubile extract significantly reduced the elevated plasma glucose level and body weight, improved kidney functions, attenuated oxidative stress by decreasing MDA levels, enhancing superoxide dismutase, catalase and glutathione peroxidase activities, reinstated the lipid profile to nearly normal level and restored pancreatic histological integrity in diabetic rats. The results reveal that C. volubile represents a source of phytochemicals that exerts their antidiabetic effects through the modulation of glycemic and atherogenic indices as well as mitigation of free-radical-mediated damage.
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Affiliation(s)
| | - Omotade Ibidun Oloyede
- a Department of Biochemistry, Faculty of Science , Ekiti State University , Ado-Ekiti , Nigeria
| | - Stephen Adeniyi Adefegha
- b Functional Foods and Nutraceuticals Unit, Department of Biochemistry , Federal University of Technology , Akure , Nigeria
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717
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Miljkovic M, Stefanovic A, Simic-Ogrizovic S, Vekic J, Bogavac-Stanojevic N, Cerne D, Kocbek P, Marc J, Jelic-Ivanovic Z, Spasojevic-Kalimanovska V, Kotur-Stevuljevic J. Association of Dyslipidemia, Oxidative Stress, and Inflammation With Redox Status in VLDL, LDL, and HDL Lipoproteins in Patients With Renal Disease. Angiology 2018; 69:861-870. [DOI: 10.1177/0003319718780041] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Some cardiovascular complications in patients with chronic kidney disease and end-stage renal disease may be caused by structurally and functionally modified lipoproteins. Redox status (advanced oxidation protein products [AOPPs]), prooxidant–antioxidant balance, total protein sulfhydryl (SH-groups), and paraoxonase 1 (PON1) activity were assessed in 77 renal patients and 20 controls. Lipoproteins were isolated using ultracentrifugation. PON1, PON3, and pentraxin-3 concentration were determined by enzyme-linked immunosorbent assay (ELISA). Dyslipidemia-Oxy-Inflammation (DOI) score was calculated as a sum of dyslipidemia, oxidative stress, and inflammation scores. The dyslipidemia score ( P < .001), oxy score ( P < .01), inflammation score (P < .001), and the DOI score ( P < .001) were higher in patient groups compared with controls. The very-low-density lipoprotein (VLDL) fraction contained the highest amount of AOPP ( P < .001) compared with other lipoprotein fractions in all groups. The low-density lipoprotein (LDL) fraction contained elevated AOPP in all groups compared with the high-density lipoprotein (HDL) fraction ( P < .001). Significant positive correlation was observed between AOPP in LDL fraction and DOI score (ρ = 0.510, P < .01). Dyslipidemia, oxidative stress, and inflammation play an interactive role in renal disease and are mutually associated with redox status in VLDL, LDL, and HDL lipoproteins in plasma of renal patients.
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Affiliation(s)
- Milica Miljkovic
- Department of Medical Biochemistry, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia
| | - Aleksandra Stefanovic
- Department of Medical Biochemistry, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia
| | | | - Jelena Vekic
- Department of Medical Biochemistry, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia
| | | | - Darko Cerne
- Department of Clinical Biochemistry, Faculty of Pharmacy, University of Ljubljana, Ljubljana, Slovenia
| | - Petra Kocbek
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Ljubljana, Ljubljana, Slovenia
| | - Janja Marc
- Department of Clinical Biochemistry, Faculty of Pharmacy, University of Ljubljana, Ljubljana, Slovenia
| | - Zorana Jelic-Ivanovic
- Department of Medical Biochemistry, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia
| | | | - Jelena Kotur-Stevuljevic
- Department of Medical Biochemistry, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia
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718
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WITHDRAWN: The ameliorative effect of p-coumaric acid and gallic acid on oxidative stress and hematological abnormalities in a rat model of type 2 diabetes. Vet Anim Sci 2018. [DOI: 10.1016/j.vas.2018.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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719
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Effects of polysaccharides from Inonotus obliquus and its chromium (III) complex on advanced glycation end-products formation, α-amylase, α-glucosidase activity and H2O2-induced oxidative damage in hepatic L02 cells. Food Chem Toxicol 2018; 116:335-345. [DOI: 10.1016/j.fct.2018.04.047] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 04/12/2018] [Accepted: 04/20/2018] [Indexed: 12/17/2022]
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720
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Multidirectional investigations on different parts of Allium scorodoprasum L. subsp. rotundum (L.) Stearn: Phenolic components, in vitro biological, and in silico propensities. Food Res Int 2018; 108:641-649. [DOI: 10.1016/j.foodres.2018.03.064] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 03/21/2018] [Accepted: 03/21/2018] [Indexed: 12/12/2022]
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721
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Ramlagan P, Rondeau P, Planesse C, Neergheen-Bhujun VS, Bourdon E, Bahorun T. Comparative suppressing effects of black and green teas on the formation of advanced glycation end products (AGEs) and AGE-induced oxidative stress. Food Funct 2018; 8:4194-4209. [PMID: 29043349 DOI: 10.1039/c7fo01038a] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This study aimed at investigating and comparing the anti-diabetic potential of black and green teas. Biochemical analyses indicate higher antioxidant potency, significantly correlated with the phytochemicals present, in green teas compared to black teas. Both extracts afforded a similar level of protection to erythrocytes against peroxyl radical-induced lysis. Non-cytotoxic concentration of green and black tea extracts significantly reduced the reactive oxygen species (ROS) production (P < 0.01), lowered the oxidation of proteins (P < 0.05) and decreased the IL-6 secretion (P < 0.01) induced by AGEs or H2O2 in 3T3-L1 preadipocytes. Both teas also inhibited the decline in the enzymatic activities of superoxide dismutase, catalase and glutathione peroxidase induced by the pro-oxidants. The teas further suppressed the glycation of BSA mediated by glucose, ribose and MGO by reducing fluorescent AGE, fructosamine, protein carbonyl and AOPP levels. Black and green teas also inhibited the activities of α-amylase (AA50: 589.86 ± 39.51 and 947.80 ± 18.20 μg mL-1, respectively) and α-glucosidase (AA50: 72.31 ± 4.23 and 100.23 ± 8.10 μg mL-1, respectively). The teas afforded a comparable level of protection at the cellular level and against glycation while black tea exerted the highest carbohydrate hydrolysing enzymes inhibitory activity. Our results clearly show that black and green teas represent an important source of antioxidants with anti-diabetic potential.
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Affiliation(s)
- P Ramlagan
- Department of Health Sciences, Faculty of Science, University of Mauritius, Réduit, Mauritius
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722
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Alem MM. Allopurinol and endothelial function: A systematic review with meta-analysis of randomized controlled trials. Cardiovasc Ther 2018; 36:e12432. [PMID: 29673103 PMCID: PMC6175067 DOI: 10.1111/1755-5922.12432] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 03/12/2018] [Accepted: 04/05/2018] [Indexed: 11/30/2022] Open
Abstract
Aim Oxidative stress and endothelial dysfunction are two inter‐related conditions commonly seen in patients with cardiovascular risk factors. The enzyme, xanthine oxidase, is an important contributor to these phenomena but to a variable degree in different patient populations. This meta‐analysis will summarize the effect of allopurinol, an established xanthine oxidase inhibitor, on endothelial function among patients with different comorbidities. Methods Medline Complete, PubMed, ProQuest, ClinicalKey, Wiley Online Library, and Cochrane Central Register of Controlled Trials were searched till July 29, 2017. Meta‐analysis was planned for randomized controlled trials (RCTs) that investigated allopurinol effects on endothelial function. A random effect model was used to calculate the standardized mean difference (with 95% confidence intervals: CI) as an estimate of effect size. Heterogeneity was quantified by four types of information: Q statistics, I2 statistic, Tau‐squared (T2), and Tau (T). Results Thirty eligible studies were identified; 12 were included in the final analysis and subdivided among 3 patient’s groups: patients with chronic heart failure (CHF; 197 patients), patients with chronic kidney disease (CKD; 183 patients), and patients with type 2 diabetes mellitus (DM; 170 patients). Allopurinol was found to have a statistically significant benefit on endothelial function in patients with CHF and CKD but not in type 2 DM. The standardized mean differences and CI in the three patient’s groups were 0.776 (0.429, 1.122), 0.350 (0.009, 0.690), and 1.331 (−0.781, 3.444), respectively. Conclusion Allopurinol has an antioxidant property that might partially reverse endothelial dysfunction in patients with certain comorbidities. The importance of this property and the magnitude of the beneficial effect are likely to be related to the relative contribution of xanthine oxidase into the oxidative stress associated with different underlying pathologies.
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Affiliation(s)
- Manal M Alem
- Department of Pharmacology, College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
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723
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Chemical characterization and bioactivity of Trichosanthes dioica edible shoot extract. ACTA ACUST UNITED AC 2018. [DOI: 10.1007/s13596-018-0310-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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724
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Shokrzadeh M, Mirshafa A, Yekta Moghaddam N, Birjandian B, Shaki F. Mitochondrial dysfunction contribute to diabetic neurotoxicity induced by streptozocin in mice: protective effect of Urtica dioica and pioglitazone. Toxicol Mech Methods 2018; 28:499-506. [PMID: 29606029 DOI: 10.1080/15376516.2018.1459993] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
INTRODUCTION Uncontrolled chronic hyperglycemia in diabetic patients could result in various complications, including neurotoxicity. Urtica dioica L. (UD) is known for its hypoglycemic and antioxidant effects. In this study, we evaluated the efficacy of UD and pioglitazone (PIO) in reduction of neurotoxicity and oxidative stress in streptozocin-induced diabetic mice. MATERIALS AND METHODS Male mice were divided into seven groups: control, diabetic, dimethyl sulfoxide-treated control, PIO-treated, UD-treated, UD-PIO-treated, and vitamin E-treated. For induction of diabetes, streptozocin was injected in a single dose (65 mg/kg, i.p.). All treatments were performed for 5 weeks. Neurotoxicity was evaluated through hot plate and formalin test. Then, animals were killed, brain tissue was separated and the mitochondrial fraction was isolated with different centrifuge technique. Also, oxidative stress markers (reactive oxygen species, lipid peroxidation, protein carbonyl, glutathione) were measured in brain. Mitochondrial function was evaluated by MTT test in brain isolated mitochondria. RESULTS Elevation of oxidative stress markers and mitochondrial damage were observed in diabetic mice compared to control group. Administration of PIO and UD ameliorated the oxidative stress and mitochondrial damage (p < 0.05) in diabetic mice. Also increase in pain score was shown in diabetic mice that treatment with UD and PIO diminished elevation of pain score in diabetic mice. Interestingly, simultaneous administration of PIO and UD showed synergism effect in attenuation of oxidative stress and hyperglycemia. CONCLUSION UD showed a therapeutic potential for the attenuation of oxidative stress and diabetes-induced hyperglycemia that can be considered as co-treatment in treatment of diabetic neurotoxicity.
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Affiliation(s)
- Mohammad Shokrzadeh
- a Pharmaceutical Sciences Research Center, Faculty of Pharmacy , Mazandaran University of Medical Sciences , Sari , Iran.,b Department of Toxicology and Pharmacology, Faculty of Pharmacy , Mazandaran University of Medical Sciences , Sari , Iran
| | - Atefeh Mirshafa
- b Department of Toxicology and Pharmacology, Faculty of Pharmacy , Mazandaran University of Medical Sciences , Sari , Iran.,c Student Research Committee , Mazandaran University of Medical Sciences , Sari , Iran
| | - Niusha Yekta Moghaddam
- b Department of Toxicology and Pharmacology, Faculty of Pharmacy , Mazandaran University of Medical Sciences , Sari , Iran.,c Student Research Committee , Mazandaran University of Medical Sciences , Sari , Iran
| | - Behnoosh Birjandian
- b Department of Toxicology and Pharmacology, Faculty of Pharmacy , Mazandaran University of Medical Sciences , Sari , Iran.,c Student Research Committee , Mazandaran University of Medical Sciences , Sari , Iran
| | - Fatemeh Shaki
- a Pharmaceutical Sciences Research Center, Faculty of Pharmacy , Mazandaran University of Medical Sciences , Sari , Iran.,b Department of Toxicology and Pharmacology, Faculty of Pharmacy , Mazandaran University of Medical Sciences , Sari , Iran
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725
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Neelankal John A, Jiang FX. An overview of type 2 diabetes and importance of vitamin D3-vitamin D receptor interaction in pancreatic β-cells. J Diabetes Complications 2018; 32:429-443. [PMID: 29422234 DOI: 10.1016/j.jdiacomp.2017.12.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Revised: 12/03/2017] [Accepted: 12/07/2017] [Indexed: 02/07/2023]
Abstract
One significant health issue that plagues contemporary society is that of Type 2 diabetes (T2D). This disease is characterised by higher-than-average blood glucose levels as a result of a combination of insulin resistance and insufficient insulin secretions from the β-cells of pancreatic islets of Langerhans. Previous developmental research into the pancreas has identified how early precursor genes of pancreatic β-cells, such as Cpal, Ngn3, NeuroD, Ptf1a, and cMyc, play an essential role in the differentiation of these cells. Furthermore, β-cell molecular characterization has also revealed the specific role of β-cell-markers, such as Glut2, MafA, Ins1, Ins2, and Pdx1 in insulin expression. The expression of these genes appears to be suppressed in the T2D β-cells, along with the reappearance of the early endocrine marker genes. Glucose transporters transport glucose into β-cells, thereby controlling insulin release during hyperglycaemia. This stimulates glycolysis through rises in intracellular calcium (a process enhanced by vitamin D) (Norman et al., 1980), activating 2 of 4 proteinases. The rise in calcium activates half of pancreatic β-cell proinsulinases, thus releasing free insulin from granules. The synthesis of ATP from glucose by glycolysis, Krebs cycle and oxidative phosphorylation plays a role in insulin release. Some studies have found that the β-cells contain high levels of the vitamin D receptor; however, the role that this plays in maintaining the maturity of the β-cells remains unknown. Further research is required to develop a more in-depth understanding of the role VDR plays in β-cell function and the processes by which the beta cell function is preserved.
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Affiliation(s)
- Abraham Neelankal John
- Harry Perkins Institute of Medical Research, Centre for Medical Research, University of Western Australia, Nedlands, Western Australia, Australia; School of Medicine and Pharmacology, University of Western Australia, Carwley, Western Australia, Australia
| | - Fang-Xu Jiang
- Harry Perkins Institute of Medical Research, Centre for Medical Research, University of Western Australia, Nedlands, Western Australia, Australia; School of Medicine and Pharmacology, University of Western Australia, Carwley, Western Australia, Australia.
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726
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Antioxidant Status, Lipid Peroxidation and Protein Oxidation in Type 2 Diabetic Patients; Beneficial Effects of Supplementation with Carnosine: A Randomized, Double-Blind, Placebo-Controlled Trial. IRANIAN RED CRESCENT MEDICAL JOURNAL 2018. [DOI: 10.5812/ircmj.64116] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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727
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Comparative study of antihypertensive and antioxidant effects of clove and metformin on renal dysfunction in streptozotocin-induced diabetic rats. PHARMANUTRITION 2018. [DOI: 10.1016/j.phanu.2018.01.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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728
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Uysal S, Aktumsek A, Picot-Allain CM, Unuvar H, Mollica A, Georgiev MI, Zengin G, Mahomoodally MF. Biological, chemical and in silico fingerprints of Dianthus calocephalus Boiss.: A novel source for rutin. Food Chem Toxicol 2018; 113:179-186. [DOI: 10.1016/j.fct.2018.01.049] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 01/26/2018] [Accepted: 01/27/2018] [Indexed: 01/19/2023]
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729
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Jayachandran M, Vinayagam R, Ambati RR, Xu B, Chung SSM. Guava Leaf Extract Diminishes Hyperglycemia and Oxidative Stress, Prevents β-Cell Death, Inhibits Inflammation, and Regulates NF-kB Signaling Pathway in STZ Induced Diabetic Rats. BIOMED RESEARCH INTERNATIONAL 2018; 2018:4601649. [PMID: 29670899 PMCID: PMC5835305 DOI: 10.1155/2018/4601649] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 11/18/2017] [Accepted: 12/11/2017] [Indexed: 12/19/2022]
Abstract
Traditional Chinese medication has been utilized by Chinese medical practitioners to treat the varied symptoms of diabetes mellitus (DM). Notably, guava leaf has been used to treat diabetes in Asia. Our present study has been designed to analyze the action of guava leaf extract (GLE) at the molecular level in treating DM. A low dose of streptozotocin (STZ) was used to induce experimental diabetes in animals. Rats were treated with GLE at different concentrations (100, 200, and 400 mg/kg b.w.). The standard drug glibenclamide (GB) (600 μg/kg b.w.) was used for comparison. The diabetic rats showed a reduced level of insulin, accompanied by exaggerated levels of blood glucose, lipid peroxidation product, and augmented expressions of inflammatory cytokines, and showed reduced levels of antioxidants compared to the control rats. Supplementation with GLE counteracted the consequences of STZ. It suppresses the oxidative stress and inhibits the state of inflammation and the results are almost similar to that of standard drug group (GB group 5). Our present research, therefore, provides useful data concerning guava leaf extract by a thorough assessment in diabetes management. Being a natural product, additional analysis on GLE can shed light on finding effective phytochemicals within the field of diabetes mellitus.
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Affiliation(s)
- Muthukumaran Jayachandran
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, Guangdong 519087, China
| | - Ramachandran Vinayagam
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, Guangdong 519087, China
| | - Ranga Rao Ambati
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, Guangdong 519087, China
- Department of Biotechnology, Vignan's Foundation for Science, Technology and Research (Deemed to Be University), Vadlamudi, Guntur, Andhra Pradesh 522213, India
| | - Baojun Xu
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, Guangdong 519087, China
| | - Stephen Sum Man Chung
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, Guangdong 519087, China
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730
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Yap HYY, Tan NH, Ng ST, Tan CS, Fung SY. Inhibition of Protein Glycation by Tiger Milk Mushroom [ Lignosus rhinocerus (Cooke) Ryvarden] and Search for Potential Anti-diabetic Activity-Related Metabolic Pathways by Genomic and Transcriptomic Data Mining. Front Pharmacol 2018; 9:103. [PMID: 29491836 PMCID: PMC5817425 DOI: 10.3389/fphar.2018.00103] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 01/30/2018] [Indexed: 01/08/2023] Open
Abstract
Naturally occurring anti-glycation compounds have drawn much interest in recent years as they show potential in reducing or preventing the risk of chronic complications for diabetic patients. In this study, annotation of the genome–transcriptome data from tiger milk mushroom (Lignosus rhinocerus, syn. Lignosus rhinocerotis) to PlantCyc enzymes database identified transcripts that are related to anti-diabetic properties, and these include genes that are involved in carotenoid and abscisic acid biosynthesis as well as genes that code for glyoxalase I, catalase-peroxidases, and superoxide dismutases. The existence of these genes suggests that L. rhinocerus may contain bioactive compound(s) with anti-glycation properties that can be exploited for management of diabetic complications. A medium-molecular-weight (MMW) fraction which was obtained from a combination of cold water extraction and Sephadex® G-50 (fine) gel filtration chromatography of L. rhinocerus sclerotia powder was demonstrated to exhibit potent anti-glycation activity. The fraction specifically inhibited the formation of N𝜀-(carboxymethyl)lysine, pentosidine, and other advanced glycation end-product (AGE) structures in a human serum albumin-glucose system, with an IC50 value of 0.001 mg/ml, almost 520 times lower than that of the positive control, aminoguanidine hydrochloride (IC50 = 0.52 mg/ml). Its ability to suppress protein glycation may be partly associated with its strong superoxide anion radical scavenging activity (10.16 ± 0.12 mmol TE/g). Our results suggest that the MMW fraction of L. rhinocerus shows potential to be developed into a potent glycation inhibitor for preventing AGE-mediated diabetic complications.
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Affiliation(s)
- Hui-Yeng Y Yap
- Department of Oral Biology, Faculty of Dentistry, Mahsa University, Kuala Lumpur, Malaysia.,Medicinal Mushroom Research Group, Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Nget-Hong Tan
- Medicinal Mushroom Research Group, Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Szu-Ting Ng
- LiGNO Biotech Sdn Bhd, Balakong Jaya, Malaysia
| | | | - Shin-Yee Fung
- Medicinal Mushroom Research Group, Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.,Center for Natural Products Research and Drug Discovery, University of Malaya, Kuala Lumpur, Malaysia
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731
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Mancini FR, Affret A, Dow C, Balkau B, Bonnet F, Boutron-Ruault MC, Fagherazzi G. Dietary antioxidant capacity and risk of type 2 diabetes in the large prospective E3N-EPIC cohort. Diabetologia 2018; 61:308-316. [PMID: 29119242 DOI: 10.1007/s00125-017-4489-7] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 09/28/2017] [Indexed: 01/04/2023]
Abstract
AIMS/HYPOTHESIS Recent evidence suggests that oxidative stress may contribute to the pathogenesis of type 2 diabetes. The diet, and especially fruit and vegetables, contains a variety of compounds with antioxidant activity, which may have cumulative/synergistic antioxidant effects. The total antioxidant capacity, an index derived from dietary intake, is a single estimate of antioxidant capacity from all dietary antioxidants. The main aim of this study was to investigate the relationship between total antioxidant capacity and risk of type 2 diabetes. METHODS Among 64,223 women (mean age 52 ± 7 years) from the French E3N-European Prospective Investigation into Cancer and Nutrition (EPIC) cohort, 1751 women had validated type 2 diabetes during 15 years of follow-up. The total antioxidant capacity was estimated with the ferric ion-reducing antioxidant power (FRAP) method. Adjusted Cox proportional hazards regression models were used to calculate HRs and 95% CIs for the associations between total antioxidant capacity and type 2 diabetes risk, adjusted for potential confounders. RESULTS In multivariable models, higher levels of total antioxidant capacity were associated with a lower risk of type 2 diabetes. Compared with women in the lowest quintile, women in the third, fourth and fifth quintiles for total antioxidant capacity had HRs of 0.74 (95% CI 0.63, 0.86), 0.70 (95% CI 0.59, 0.83) and 0.73 (95% CI 0.60, 0.89), respectively. The inverse association between total antioxidant capacity and risk of type 2 diabetes was linear up to values of 15 mmol/day, after which the effect reached a plateau. CONCLUSIONS/INTERPRETATION Our findings suggest that the total antioxidant capacity may play an important role in reducing the risk of type 2 diabetes in middle-aged women. More studies are warranted to better understand the biological mechanisms underlying this inverse association.
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Affiliation(s)
- Francesca Romana Mancini
- Inserm U1018, Centre for Research in Epidemiology and Population Health (CESP) 'Health across Generations' Team, University Paris-Saclay, University Paris-Sud, Gustave Roussy, Espace Maurice Tubiana, 114 rue Edouard Vaillant, 94805, Villejuif Cedex, France
| | - Aurélie Affret
- Inserm U1018, Centre for Research in Epidemiology and Population Health (CESP) 'Health across Generations' Team, University Paris-Saclay, University Paris-Sud, Gustave Roussy, Espace Maurice Tubiana, 114 rue Edouard Vaillant, 94805, Villejuif Cedex, France
| | - Courtney Dow
- Inserm U1018, Centre for Research in Epidemiology and Population Health (CESP) 'Health across Generations' Team, University Paris-Saclay, University Paris-Sud, Gustave Roussy, Espace Maurice Tubiana, 114 rue Edouard Vaillant, 94805, Villejuif Cedex, France
| | - Beverley Balkau
- Inserm U1018, Centre for Research in Epidemiology and Population Health (CESP) 'Renal and cardiovascular Epidemiology' Team, University Versailles, Saint Quentin, University Paris-Sud, Villejuif, France
| | - Fabrice Bonnet
- Inserm U1018, Centre for Research in Epidemiology and Population Health (CESP) 'Health across Generations' Team, University Paris-Saclay, University Paris-Sud, Gustave Roussy, Espace Maurice Tubiana, 114 rue Edouard Vaillant, 94805, Villejuif Cedex, France
- CHU Rennes, Université de Rennes 1, Department of Endocrinology, Diabetology and Nutrition, Rennes, France
| | - Marie-Christine Boutron-Ruault
- Inserm U1018, Centre for Research in Epidemiology and Population Health (CESP) 'Health across Generations' Team, University Paris-Saclay, University Paris-Sud, Gustave Roussy, Espace Maurice Tubiana, 114 rue Edouard Vaillant, 94805, Villejuif Cedex, France.
| | - Guy Fagherazzi
- Inserm U1018, Centre for Research in Epidemiology and Population Health (CESP) 'Health across Generations' Team, University Paris-Saclay, University Paris-Sud, Gustave Roussy, Espace Maurice Tubiana, 114 rue Edouard Vaillant, 94805, Villejuif Cedex, France
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732
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Amiri A, Dehkordi RAF, Heidarnejad MS, Dehkordi MJ. Effect of the Zinc Oxide Nanoparticles and Thiamine for the Management of Diabetes in Alloxan-Induced Mice: a Stereological and Biochemical Study. Biol Trace Elem Res 2018; 181:258-264. [PMID: 28534098 DOI: 10.1007/s12011-017-1035-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 04/21/2017] [Indexed: 01/05/2023]
Abstract
This research was carried out to evaluate the antidiabetic effects of zinc oxide nanoparticles (ZnO NPs) and thiamine following experimental diabetes. Fifty-six 6-week-old female mice were used and divided into seven groups of eight animals. Diabetes was induced in fasted mice by using intraperitoneal (IP) injection of alloxan (180 mg/kg). Groups included (I) non-diabetic control, (II) thiamine (30 mg/l, IP), (III) alloxan-induced diabetic mice, (IV) diabetes + ZnO NPs (0.1 mg/kg IP), (V) diabetes + ZnO NPs (0.5 mg/kg IP), (VI) diabetes + ZnO NPs (0.1 mg/kg IP) + thiamine (30 mg/l, IP), and (VII) diabetes + ZnO NPs (0.5 mg/kg IP) + thiamine (30 mg/l, IP). Coincident with pancreas recovery, in diabetic treated mice (groups IV to VII), the mean islet volume, islets per square micrometer, and volume density of the pancreas had increased than in alloxan-induced diabetic mice. ZnO NPs and thiamine induced a decreasing blood glucose, lower serum triglyceride (TG), LDL, and total cholesterol (TC) levels in alloxan-induced diabetic mice treated with ZnO NPs and thiamine, simultaneously increasing HDL as well. In conclusion, ZnO NPs and thiamine are potent antidiabetic factors, and that, these compound supplementation possesses hypoglycemic properties and have effect on serum lipid parameters in diabetes mice.
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Affiliation(s)
| | | | | | - Mohsen Jafarian Dehkordi
- Department of Clinical pathology, Faculty of Veterinary Medicine, Azad University of Shahrekord, Shahrekord, Iran
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733
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Tan BL, Norhaizan ME, Liew WPP. Nutrients and Oxidative Stress: Friend or Foe? OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:9719584. [PMID: 29643982 PMCID: PMC5831951 DOI: 10.1155/2018/9719584] [Citation(s) in RCA: 171] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 11/24/2017] [Accepted: 12/04/2017] [Indexed: 02/07/2023]
Abstract
There are different types of nutritionally mediated oxidative stress sources that trigger inflammation. Much information indicates that high intakes of macronutrients can promote oxidative stress and subsequently contribute to inflammation via nuclear factor-kappa B- (NF-κB-) mediated cell signaling pathways. Dietary carbohydrates, animal-based proteins, and fats are important to highlight here because they may contribute to the long-term consequences of nutritionally mediated inflammation. Oxidative stress is a central player of metabolic ailments associated with high-carbohydrate and animal-based protein diets and excessive fat consumption. Obesity has become an epidemic and represents the major risk factor for several chronic diseases, including diabetes, cardiovascular disease (CVD), and cancer. However, the molecular mechanisms of nutritionally mediated oxidative stress are complex and poorly understood. Therefore, this review aimed to explore how dietary choices exacerbate or dampen the oxidative stress and inflammation. We also discussed the implications of oxidative stress in the adipocyte and glucose metabolism and obesity-associated noncommunicable diseases (NCDs). Taken together, a better understanding of the role of oxidative stress in obesity and the development of obesity-related NCDs would provide a useful approach. This is because oxidative stress can be mediated by both extrinsic and intrinsic factors, hence providing a plausible means for the prevention of metabolic disorders.
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Affiliation(s)
- Bee Ling Tan
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Mohd Esa Norhaizan
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
- Laboratory of Molecular Biomedicine, Institute of Bioscience, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
- Research Centre of Excellent, Nutrition and Non-Communicable Diseases (NNCD), Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Winnie-Pui-Pui Liew
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
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734
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Regularities of Oxidative Stress Course in Cerebral Stroke. SERBIAN JOURNAL OF EXPERIMENTAL AND CLINICAL RESEARCH 2017. [DOI: 10.1515/sjecr-2017-0064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Abstract
Objective of the article: to improve diagnosis and treatment results of patients with ischaemic and haemorrhagic strokes by means of a comprehensive in-depth review of free radical processes and the defining of patterns of their course under the conditions of stroke. During the study, the authors established the regularities for the course of free radical processes in stroke with the development of oxidative stress and the severity of peroxidelipid component, which increases in proportion to the severity of ischaemic or haemorrhagic stroke with maximum intensity in cases of adverse outcomes. Multi-stage mathematical modelling allowed for the determination of a highly effective formula for early stroke prognosis, which includes only 5 indicators used for estimation at hospitalization: consciousness level, blood glucose level, number of leukocytes in venous blood, antiperoxide activity of plasma and malondialdehyde. It was found that each of these parameters is an independent marker of hospital mortality. The consideration of all these indicators makes it possible to carry out early prognostic diagnostics with 90% probability and to timely correct treatment. We have also established digital boundaries, which are indications for the administration of energy correct therapy, the proper implementation of which has significantly improved the results of hospital treatment.
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735
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Luo J, Xu Q, Jiang B, Zhang R, Jia X, Li X, Wang L, Guo C, Wu N, Shi D. Selectivity, cell permeability and oral availability studies of novel bromophenol derivative HPN as protein tyrosine phosphatase 1B inhibitor. Br J Pharmacol 2017; 175:140-153. [PMID: 29059712 DOI: 10.1111/bph.14080] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 09/19/2017] [Accepted: 10/11/2017] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND AND PURPOSE Protein tyrosine phosphatase 1B (PTP1B) negatively regulates insulin signalling by tyrosine dephosphorylation of the insulin receptor. It is a highly validated target for type 2 diabetes therapeutics. Here, the anti-diabetic effects of HPN were evaluated in the diabetic BKS db mice. EXPERIMENTAL APPROACH The mode of inhibition of PTP1B by HPN was determined according to the Lineweaver-Burk plot. A surface plasmon resonance assay and molecular docking were used to study the interaction between HPN and PTP1B. C2C12 skeletal muscle cells were used to investigate the cell permeability of HPN and the effect of HPN on insulin signalling pathways. Long-term effects of HPN on glycaemic control were investigated in diabetic BKS db mice. Glycogen contents in liver and muscle were determined. Furthermore, changes in the number of beta cells were evaluated by Gomori staining. KEY RESULTS HPN was identified as a specific PTP1B inhibitor. HPN directly interacted with PTP1B by binding to the catalytic domain through hydrogen bonds in a competitive mode. Approximately 56.98% of HPN entered into the cultured C2C12 myotubes. HPN ameliorated the impaired insulin signalling in palmitate-treated C2C12 myocytes. Notably, oral administration of HPN significantly protected mice from hyperglycaemia, dyslipidemia and hyperinsulinaemia. HPN also enhanced the storage of glycogen in liver and muscle. Moreover, HPN obviously improved the beta cell numbers of the pancreatic islets. CONCLUSION AND IMPLICATIONS Our results indicate that HPN is a specific PTP1B inhibitor, with anti-diabetic properties and good cell permeability and oral availability.
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Affiliation(s)
- Jiao Luo
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Qi Xu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Bo Jiang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Renshuai Zhang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Xiaoling Jia
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Xiangqian Li
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Lijun Wang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Chuanlong Guo
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Ning Wu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Dayong Shi
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,University of Chinese Academy of Sciences, Beijing, China
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736
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Low-protein diet supplemented with ketoacids delays the progression of diabetic nephropathy by inhibiting oxidative stress in the KKAy mice model. Br J Nutr 2017; 119:22-29. [PMID: 29208058 DOI: 10.1017/s0007114517003208] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Diabetic nephropathy (DN) is a major cause of chronic kidney disease. We aimed to investigate the effect of the low-protein diets (LPD) supplemented with ketoacids (LPD+KA) in KKAy mice, an early type 2 DN model. KKAy mice were treated with normal protein diet (NPD), LPD or LPD+KA from 12 to 24 weeks of age. A period of 12-week treatment with LPD significantly reduced albuminuria as compared with that observed after NPD treatment. Treatment with LPD+KA further reduced albuminuria as compared with that observed with LPD treatment alone. Moreover, LPD treatment reduced mesangial expansion, thickness of glomerular basement membrane and the severity of the podocyte foot process effacement in KKAy mice; these effects were more pronounced in KKAy mice treated with LPD+KA. Both LPD and LPD+KA treatments slightly reduced total body weight, but had no significant effect on kidney weight and blood glucose concentrations when compared with NPD-treated KKAy mice. LPD treatment slightly attenuated oxidative stress in kidneys as compared with that observed in NPD-treated KKAy mice; however, LPD+KA treatment remarkably ameliorated oxidative stress in diabetic kidneys as shown by decreased malondialdehyde concentrations, protein carbonylation, nitrotyrosine expression and increased superoxide dismutase expression. Nutritional therapy using LPD+KA confers additional renal benefits as compared with those of LPD treatment alone in early type 2 DN through inhibition of oxidative stress.
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737
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Ji S, Fattahi A, Raffel N, Hoffmann I, Beckmann MW, Dittrich R, Schrauder M. Antioxidant effect of aqueous extract of four plants with therapeutic potential on gynecological diseases; Semen persicae, Leonurus cardiaca, Hedyotis diffusa, and Curcuma zedoaria. Eur J Med Res 2017; 22:50. [PMID: 29178942 PMCID: PMC5702154 DOI: 10.1186/s40001-017-0293-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 11/15/2017] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Little information is available concerning antioxidant effects of plant teas (water boiled) which are used more commonly in traditional Chinese medicine than other extracts. Thus, we addressed this issue by evaluating the ability of teas from four different plants with therapeutic potential on gynecological diseases. METHODS The aqueous extracts of Semen persicae, Leonurus cardiaca, Hedyotis diffusa, and Curcuma zedoaria rhizome were prepared and then their effects on copper-induced low-density lipoprotein cholesterol (LDL-C) oxidation were evaluated by spectrophotometric method. Density gradient ultracentrifugation method was recruited to isolate LDL-C from healthy individuals. RESULTS Our results showed that adding 10, 20, and 30 µl S. persicae could increase the lag phase duration of LDL-C oxidation compared with control reaction 12, 21, and 33%, respectively. The most effective delay (87%) was observed when 30 µl H. diffusa was added to the reaction. In cases of L. cardiaca and C. zedoaria, we found no significant influence on the lag phase duration (p > 0.05). Moreover, our findings about starting point of the decomposition phase were almost in parallel with the lag phase results, as 30 µl of S. persicae or H. diffusa teas could significantly increase the initiation time of decomposition (p < 0.05). CONCLUSIONS In conclusion our results showed that both S. persicae and H. diffusa teas and not L. cardiaca and C. zedoaria could have medicinal therapeutic effects partly through direct oxidation prevention.
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Affiliation(s)
- Shaojian Ji
- OB/GYN, University Hospital Erlangen, Friedrich-Alexander University, Universitätsstrasse 21-23, Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Amir Fattahi
- OB/GYN, University Hospital Erlangen, Friedrich-Alexander University, Universitätsstrasse 21-23, Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Nathalie Raffel
- OB/GYN, University Hospital Erlangen, Friedrich-Alexander University, Universitätsstrasse 21-23, Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Inge Hoffmann
- OB/GYN, University Hospital Erlangen, Friedrich-Alexander University, Universitätsstrasse 21-23, Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Matthias W Beckmann
- OB/GYN, University Hospital Erlangen, Friedrich-Alexander University, Universitätsstrasse 21-23, Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Ralf Dittrich
- OB/GYN, University Hospital Erlangen, Friedrich-Alexander University, Universitätsstrasse 21-23, Erlangen-Nürnberg, 91054, Erlangen, Germany.
| | - Michael Schrauder
- OB/GYN, University Hospital Erlangen, Friedrich-Alexander University, Universitätsstrasse 21-23, Erlangen-Nürnberg, 91054, Erlangen, Germany
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738
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Alsharidah M, Algeffari M, Abdel-Moneim AMH, Lutfi MF, Alshelowi H. Effect of combined gliclazide/metformin treatment on oxidative stress, lipid profile, and hepatorenal functions in type 2 diabetic patients. Saudi Pharm J 2017; 26:1-6. [PMID: 29379326 PMCID: PMC5783821 DOI: 10.1016/j.jsps.2017.11.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Accepted: 11/14/2017] [Indexed: 12/11/2022] Open
Abstract
Background Type 2 diabetes is a chronic condition that requires pharmacotherapy interventions. Metformin and gliclazide are widely used drugs in monotherapy. However, their complementary action made utilization of the combination of these drugs an appealing approach. Aims The study compared major therapeutic potentials of combined metformin/gliclazide treatment over metformin monotherapy based on the following parameters: oxidative stress, lipid profile, and hepatorenal functions. Subjects and methods This is a comparative study was conducted from March 2015 to March 2016. The study screened 80 type 2 diabetic patients, of which 40 patients underwent combined metformin + gliclazide therapy (500 mg BD + 80 mg OD, respectively). The other 40 were matched for age and duration of diabetes mellitus with the previous group and received metformin monotherapy (500 mg BD). The levels of fasting blood glucose (FBG), total glycated hemoglobin (HbA1c), lipid peroxidation, total antioxidant capacity, serum creatinine, aspartate and alanine transaminases, total cholesterol, triglycerides, high-density lipoproteins, and low-density lipoproteins were measured according to the standard methods. Results Oxidative stress, lipid profile, and hepatorenal functions were comparable in patients of both groups. However, patients on metformin treatment showed significantly lower levels of FBG [7.61 (6.70–8.89) mmol/L vs. 9.00 (7.30–10.68) mmol/L; P = .022] and HBA1c [7.00 (6.40–7.65)% vs. 8.20 (7.20–9.75)%; P < .001] compared to those on combined therapy. Conclusion Oxidative stress, lipids profile, and hepatorenal functions were not different in patients who were on combined metformin/gliclazide therapy and compared to those metformin alone. In contrast, glycemic control was poor in the diabetic patients undergoing combined therapy.
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Affiliation(s)
- Mansour Alsharidah
- Physiology Department, College of Medicine, Qassim University, Saudi Arabia.,College of Pharmacy, Qassim University, Saudi Arabia
| | - Metab Algeffari
- Department of Family Medicine, College of Medicine, Qassim University, Saudi Arabia
| | - Abdel-Moneim Hafez Abdel-Moneim
- Physiology Department, College of Medicine, Qassim University, Saudi Arabia.,Physiology Department, Faculty of Medicine, Mansoura University, Egypt
| | | | - Haila Alshelowi
- Department of Pediatric Endocrinology, Albassam Diabetes and Endocrine Center, Saudi Arabia
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739
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Shah MA, Muhammad H, Mehmood Y, Khalil R, Ul-Haq Z, Panichayupakaranant P. Superoxide Scavenging and Antiglycation Activity of Rhinacanthins-rich Extract Obtained from the Leaves of Rhinacanthus nasutus. Pharmacogn Mag 2017; 13:652-658. [PMID: 29200728 PMCID: PMC5701406 DOI: 10.4103/pm.pm_196_17] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 05/30/2017] [Indexed: 02/05/2023] Open
Abstract
Background: Oxidative stress and nonenzymatic protein glycation lead to serious diabetic complications that increase the risk of mortality. Rhinacanthus nasutus leaf crude extracts are previously reported for their antidiabetic, antiglycation, and antioxidant potential. Objective: The present study was performed to prepare a standardized rhinacanthins-rich extract (RRE) and evaluate its superoxide scavenging and antiglycation effects as compared to its marker compounds, namely, rhinacanthin-C (RC), rhinacanthin-D (RD), and rhinacanthin-N (RN). Materials and Methods: RRE was obtained by microwave-assisted green extraction along with a simple step of fractionation using Amberlite® column. RC, RD, and RN were isolated from the RRE using silica gel column chromatography. Superoxide scavenging activity was performed by cyclic voltammetry, and fructose-mediated human serum albumin glycation model was used for antiglycation activity. In silico studies were conducted to identify the structure-activity relationships of rhinacanthins. Results: On the basis of kinetic measurements, RRE exhibited the most potent antioxidant activity via ErCi mechanism, with a 50% inhibitory concentration (IC50) value of 8.0 μg/mL, antioxidant capacity of 39439 M−1, and binding constant of 45709 M−1. Antiglycation assay showed that RRE exhibited almost equivalent glycation inhibitory effect to that of RC, with IC50 values of 39.7 and 37.3 μg/mL, respectively, but higher than that of RD (IC50 of 50.4 μg/mL), RN (IC50 of 89.5 μg/mL), as well as the positive control, rutin (IC50 of 41.5 μg/mL). Conclusions: The potent superoxide scavenging and albumin glycation inhibitory effect of RRE rationalized its therapeutic application in various chronic diseases, especially in the complications of diabetes. SUMMARY Rhinacanthins-rich extract (RRE) exhibited potent superoxide scavenging activity RRE and rhinacanthin-C showed remarkable and comparable antiglycation effect Rhinacanthins exhibited antiglycation activity by masking specific residues of albumin.
Abbreviations used: RRE: Rhinacanthins-rich extract; RC: Rhinacanthin-C; RD: Rhinacanthin-D; RN: Rhinacanthin-N; IC50: 50% inhibitory concentration; Kao: Antioxidant activity coefficient; Kb: Binding constant; ErCi: Reversible electron transfer followed by an irreversible chemical reaction; DM: Diabetes mellitus; AGEPs: Advanced glycation end products; NMR: Nuclear magnetic resonance; HPLC: High-performance liquid chromatography; CV: Cyclic voltammetry; DMSO: Dimethyl sulfoxide; Ipa: Anodic peak current; Ipc: Cathodic peak current; HSA: Human serum albumin; MOE: Molecular operating environment; PASSonline: Online prediction of activity spectra for substances.
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Affiliation(s)
- Muhammad Ajmal Shah
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand
| | - Haji Muhammad
- Department of Chemistry, Federal Urdu University of Arts, Science and Technology, Gulshan-e-Iqbal, Main Campus, Karachi-75300, Pakistan
| | - Yasir Mehmood
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Ruqaiya Khalil
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Zaheer Ul-Haq
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Pharkphoom Panichayupakaranant
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand.,Phytomedicine and Pharmaceutical Biotechnology Excellence Center, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand
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740
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Saadat M. Evaluation of glutathione S-transferase P1 (GSTP1) Ile105Val polymorphism and susceptibility to type 2 diabetes mellitus, a meta-analysis. EXCLI JOURNAL 2017; 16:1188-1197. [PMID: 29285015 PMCID: PMC5735339 DOI: 10.17179/excli2017-828] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 10/17/2017] [Indexed: 12/26/2022]
Abstract
It is well established that type 2 diabetes mellitus (T2DM) is associated with oxidative stress and glutathione S-transferases (GSTs) protect cells against oxidative stress. The missense substitution Ile105Val (rs1695) of the glutathione S-transferase P1 (GSTP1, OMIM: 134660) results from an A/G base substitution at nucleotide 313. Many studies have evaluated the correlation between the rs1695 polymorphism and T2DM, but the results remain inconclusive. The aim of the present meta-analysis was to investigate the association between GSTP1 Ile105Val polymorphism and the susceptibility risk of T2DM. Eligible studies (published before August 2017) were identified in several databases. The heterogeneity between studies was evaluated with the chi-square based Q test and the I2 test. The strengths of the association were assessed by pooled odds ratios (ORs) and the corresponding 95 % confidence interval (95 % CI) using either a fixed or random-effects models. Eighteen studies documenting a total of 2595 T2DM cases and 2888 controls were included in this meta-analysis. In the overall analysis there was no significant association between the rs1695 polymorphism and the risk of T2DM. The subgroup analyses stratified by ethnicity, publication year and sample size did not reveal significant association between the study polymorphism and the risk of T2DM and any sources contributing to the substantial heterogeneity between studies. The present meta-analysis suggested that there was significant heterogeneity between studies. Considering some limi tations of our meta-analysis, further large-scale studies should be done to reach a more comprehensive understanding.
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Affiliation(s)
- Mostafa Saadat
- Department of Biology, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran
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741
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de Sales PM, de Souza PM, Dartora M, Resck IS, Simeoni LA, Fonseca-Bazzo YM, de Oliveira Magalhães P, Silveira D. Pouteria torta epicarp as a useful source of α-amylase inhibitor in the control of type 2 diabetes. Food Chem Toxicol 2017; 109:962-969. [DOI: 10.1016/j.fct.2017.03.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2016] [Revised: 03/05/2017] [Accepted: 03/06/2017] [Indexed: 12/29/2022]
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742
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Singh N, Gupta VK, Kumar A, Sharma B. Synergistic Effects of Heavy Metals and Pesticides in Living Systems. Front Chem 2017; 5:70. [PMID: 29075624 PMCID: PMC5641569 DOI: 10.3389/fchem.2017.00070] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2017] [Accepted: 09/11/2017] [Indexed: 12/20/2022] Open
Abstract
There is a widespread repeated exposure of the population to the pesticides and heavy metals of occupational and environmental origin. Such population is forced to undergo continuous stress imposed by combined exposure of the heavy metals and different classes of the pesticides used in agricultural as well as health practices. The existing reports from several workers have indicated that heavy metals and pesticides in combination may lead more severe impact on the human health when compared to their individual effects. Such a combination of pesticides and heavy metals may also change or influence the detection of exposure. Several studies in past have shown the synergistic toxic effects of heavy metals and pesticides. Such evaluations have revealed the synergistic interactions of various heavy metals and pesticides in animals as well as humans. The aim of the present article is to provide a synthesis of existing knowledge on the synergistic effects of heavy metal and pesticides in living systems. The information included in this article may be useful for different environment protection agencies and policy makers to consider the combined effects of heavy metals and pesticides on humans while designing strategies toward environmental protection and safety regulations about human health.
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Affiliation(s)
- Nitika Singh
- Department of Biochemistry, Faculty of Science, University of Allahabad, Allahabad, India
| | - Vivek Kumar Gupta
- Department of Biochemistry, Faculty of Science, University of Allahabad, Allahabad, India
| | - Abhishek Kumar
- Department of Biochemistry, Faculty of Science, University of Allahabad, Allahabad, India
| | - Bechan Sharma
- Department of Biochemistry, Faculty of Science, University of Allahabad, Allahabad, India
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743
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Ahmad W, Ijaz B, Shabbiri K, Ahmed F, Rehman S. Oxidative toxicity in diabetes and Alzheimer's disease: mechanisms behind ROS/ RNS generation. J Biomed Sci 2017; 24:76. [PMID: 28927401 PMCID: PMC5606025 DOI: 10.1186/s12929-017-0379-z] [Citation(s) in RCA: 200] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 09/05/2017] [Indexed: 02/07/2023] Open
Abstract
Reactive oxidative species (ROS) toxicity remains an undisputed cause and link between Alzheimer’s disease (AD) and Type-2 Diabetes Mellitus (T2DM). Patients with both AD and T2DM have damaged, oxidized DNA, RNA, protein and lipid products that can be used as possible disease progression markers. Although the oxidative stress has been anticipated as a main cause in promoting both AD and T2DM, multiple pathways could be involved in ROS production. The focus of this review is to summarize the mechanisms involved in ROS production and their possible association with AD and T2DM pathogenesis and progression. We have also highlighted the role of current treatments that can be linked with reduced oxidative stress and damage in AD and T2DM.
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Affiliation(s)
- Waqar Ahmad
- School of Biological Sciences, University of Queensland, Brisbane, 4072, Australia.
| | - Bushra Ijaz
- Centre of Excellence in Molecular Biology, University of the Punjab, Thokar Niaz Baig, Lahore, 54000, Pakistan
| | - Khadija Shabbiri
- School of Biological Sciences, University of Queensland, Brisbane, 4072, Australia
| | - Fayyaz Ahmed
- Centre of Excellence in Molecular Biology, University of the Punjab, Thokar Niaz Baig, Lahore, 54000, Pakistan
| | - Sidra Rehman
- COMSATS Institute of Information Technology Abbottabad, Abbottabad, 22010, Pakistan
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744
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Investigating the in vitro hypoglycaemic and antioxidant properties of Citrus × clementina Hort. juice. Eur Food Res Technol 2017. [DOI: 10.1007/s00217-017-2978-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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745
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Kumar S, Patial V, Soni S, Sharma S, Pratap K, Kumar D, Padwad Y. Picrorhiza kurroa Enhances β-Cell Mass Proliferation and Insulin Secretion in Streptozotocin Evoked β-Cell Damage in Rats. Front Pharmacol 2017; 8:537. [PMID: 28878669 PMCID: PMC5572391 DOI: 10.3389/fphar.2017.00537] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 08/02/2017] [Indexed: 12/26/2022] Open
Abstract
Autoimmune destruction of insulin producing pancreatic β-cells leads to insulin insufficiency and hyperglycemia in type 1 diabetes mellitus. Regeneration of β-cells is one of the proposed treatment for type 1 diabetes and insulin insufficiency. Picrorhiza kurroa is a medicinal herb and is traditionally being used for the treatment of various diseases. Previous studies reported the hypoglycemic potential of P. kurroa. However, its potential role in β-cell induction in insulin secretion have not been fully investigated. Here, we characterized the hydro alcoholic extract of P. kurroa rhizome (PKRE) and further studied its β-cell regeneration and induction of insulin secretion potential in streptozotocin (STZ) induced diabetic rats as well as in insulin producing Rin5f cells. 1H-NMR revealed the presence of more than thirty metabolites including picroside I and II in PKRE. Further, we found that PKRE treatment (100 and 200 mg/kg dose for 30 days) significantly (p ≤ 0.05) protected the pancreatic β-cells against streptozotocin (STZ) evoked damage and inhibited the glucagon receptor expression (Gcgr) in hepatic and renal tissues. It significantly (p ≤ 0.05) enhanced the insulin expression and aids in proliferation of insulin producing Rin5f cells with elevated insulin secretion. Furthermore it significantly (p ≤ 0.05) increased insulin mediated glucose uptake in 3T3L1 and L6 cells. On the contrary, in diabetic rats, PKRE significantly (p ≤ 0.05) decreased high blood glucose and restored the normal levels of serum biochemicals. Altogether, our results showed that PKRE displayed β-cell regeneration with enhanced insulin production and antihyperglycemic effects. PKRE also improves hepatic and renal functions against oxidative damage.
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Affiliation(s)
- Shiv Kumar
- Pharmacology and Toxicology Lab, Food and Nutraceuticals Division, CSIR-Institute of Himalayan Bioresource TechnologyPalampur, India.,Academy of Scientific and Innovative ResearchNew Delhi, India
| | - Vikram Patial
- Pharmacology and Toxicology Lab, Food and Nutraceuticals Division, CSIR-Institute of Himalayan Bioresource TechnologyPalampur, India.,Academy of Scientific and Innovative ResearchNew Delhi, India
| | - Sourabh Soni
- Pharmacology and Toxicology Lab, Food and Nutraceuticals Division, CSIR-Institute of Himalayan Bioresource TechnologyPalampur, India.,Academy of Scientific and Innovative ResearchNew Delhi, India
| | - Supriya Sharma
- Pharmacology and Toxicology Lab, Food and Nutraceuticals Division, CSIR-Institute of Himalayan Bioresource TechnologyPalampur, India.,Academy of Scientific and Innovative ResearchNew Delhi, India
| | - Kunal Pratap
- Pharmacology and Toxicology Lab, Food and Nutraceuticals Division, CSIR-Institute of Himalayan Bioresource TechnologyPalampur, India
| | - Dinesh Kumar
- Academy of Scientific and Innovative ResearchNew Delhi, India.,Natural Product Chemistry and Process Development Division, CSIR-Institute of Himalayan Bioresource TechnologyPalampur, India
| | - Yogendra Padwad
- Pharmacology and Toxicology Lab, Food and Nutraceuticals Division, CSIR-Institute of Himalayan Bioresource TechnologyPalampur, India.,Academy of Scientific and Innovative ResearchNew Delhi, India
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746
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Guo X, Sun W, Huang L, Wu L, Hou Y, Qin L, Liu T. Effect of Cinnamaldehyde on Glucose Metabolism and Vessel Function. Med Sci Monit 2017; 23:3844-3853. [PMID: 28790298 PMCID: PMC5562185 DOI: 10.12659/msm.906027] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Background Material/Methods Results Conclusions
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Affiliation(s)
- Xuan Guo
- Department of Endocrinology, Beijing University of Chinese Medicine, Beijing, China (mainland)
| | - Wen Sun
- Key Laboratory of Health Cultivation of the Ministry of Education, Beijing University of Chinese Medicine, Beijing, China (mainland)
| | - Liansha Huang
- Preventive Treatment of Disease Centre, Chinese Medicine Hospital of Baoan, Shenzhen, Guangdong, China (mainland)
| | - Lili Wu
- Beijing key Laboratory of Health Cultivation, Beijing University of Chinese Medicine, Beijing, China (mainland)
| | - Yi Hou
- Department of Endocrinology, Beijing University of Chinese Medicine, Beijing, China (mainland)
| | - Lingling Qin
- Department of Science and Technology, Beijing University of Chinese Medicine, Beijing, China (mainland)
| | - Tonghua Liu
- Key Laboratory of Health Cultivation of the Ministry of Education, Beijing University of Chinese Medicine, Beijing, China (mainland)
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747
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Sadek KM, Lebda MA, Nasr SM, Shoukry M. Spirulina platensis prevents hyperglycemia in rats by modulating gluconeogenesis and apoptosis via modification of oxidative stress and MAPK-pathways. Biomed Pharmacother 2017. [DOI: 10.1016/j.biopha.2017.06.023] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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748
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Ramirez-Lee MA, Espinosa-Tanguma R, Mejía-Elizondo R, Medina-Hernández A, Martinez-Castañon GA, Gonzalez C. Effect of silver nanoparticles upon the myocardial and coronary vascular function in isolated and perfused diabetic rat hearts. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 13:2587-2596. [PMID: 28756091 DOI: 10.1016/j.nano.2017.07.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 07/04/2017] [Accepted: 07/13/2017] [Indexed: 11/26/2022]
Abstract
Silver nanoparticles (AgNPs) are promising antibacterial nanomaterials for diagnostic and treatment of diabetes. However, toxicity and adverse cardiac responses induced by AgNPs related to nitric oxide (NO) and oxidative stress (OS) are described. Moreover, little is known about the diabetes influence upon AgNPs-toxicity. The aim of this work was to evaluate cardiovascular function in response to AgNPs through measuring perfusion pressure (PP) and left ventricle pressure (LVP), using perfused hearts from streptozotocin (STZ)-induced diabetic rats and identify the role of NO and OS. High concentrations but not the lower concentrations of AgNPs, promotes increases in PP and LVP, as well as increased OS. Additionally, diabetes alters the classic effects of phenylephrine (Phe) and acetylcholine (ACh). These data suggest that diabetes may intensify AgNPs-cardiotoxicity. Nevertheless, the precise mechanism of action is still under elucidation.
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Affiliation(s)
- Manuel Alejandro Ramirez-Lee
- Facultad de Ciencias Quimicas, Universidad Autonoma de San Luis Potosi, Av. Manuel Nava Num. 6, Col. Universitaria, San Luis Potosi, S.L.P., Mexico
| | - Ricardo Espinosa-Tanguma
- Facultad de Medicina, Universidad Autonoma de San Luis Potosi, Av. Venustiano Carranza 2405, Los Filtros, San Luis, S.L.P., Mexico
| | - Rebeca Mejía-Elizondo
- Facultad de Medicina, Universidad Autonoma de San Luis Potosi, Av. Venustiano Carranza 2405, Los Filtros, San Luis, S.L.P., Mexico
| | - Alejandra Medina-Hernández
- Facultad de Medicina, Universidad Autonoma de San Luis Potosi, Av. Venustiano Carranza 2405, Los Filtros, San Luis, S.L.P., Mexico
| | - Gabriel Alejandro Martinez-Castañon
- Facultad de Estomatologia, Universidad Autonoma de San Luis Potosi, Av. Manuel Nava Num. 2, Col. Universitaria, San Luis Potosi, S.L.P., Mexico
| | - Carmen Gonzalez
- Facultad de Ciencias Quimicas, Universidad Autonoma de San Luis Potosi, Av. Manuel Nava Num. 6, Col. Universitaria, San Luis Potosi, S.L.P., Mexico.
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749
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Sun Y, Yang PP, Song ZY, Feng Y, Hu DM, Hu J, Xu GY, Zhang HH. α-lipoic acid suppresses neuronal excitability and attenuates colonic hypersensitivity to colorectal distention in diabetic rats. J Pain Res 2017; 10:1645-1655. [PMID: 28769585 PMCID: PMC5529097 DOI: 10.2147/jpr.s135017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
AIM Patients with long-standing diabetes often demonstrate intestinal dysfunction, characterized as constipation or colonic hypersensitivity. Our previous studies have demonstrated the roles of voltage-gated sodium channels NaV1.7 and NaV1.8 in dorsal root ganglion (DRG) in colonic hypersensitivity of rats with diabetes. This study was designed to determine roles of antioxidant α-lipoic acid (ALA) on sodium channel activities and colonic hypersensitivity of rats with diabetes. METHODS Streptozotocin was used to induce diabetes in adult female rats. Colonic sensitivity was measured by behavioral responses to colorectal distention in rats. The excitability and sodium channel currents of colon projection DRG neurons labeled with DiI were measured by whole-cell patch-clamp recordings. The expressions of NaV1.7 and NaV1.8 of colon DRGs were measured by western blot analysis. RESULTS ALA treatment significantly increased distention threshold in responding to colorectal distension in diabetic rats compared with normal saline treatment. ALA treatment also hyper-polarized the resting membrane potentials, depolarized action potential threshold, increased rheobase, and decreased frequency of action potentials evoked by ramp current stimulation. Furthermore, ALA treatment also reduced neuronal sodium current densities of DRG neurons innervating the colon from rats with diabetes. In addition, ALA treatment significantly downregulated NaV1.7 and NaV1.8 expression in colon DRGs from rats with diabetes. CONCLUSION Our results suggest that ALA plays an analgesic role, which was likely mediated by downregulation of NaV1.7 and NaV1.8 expressions and functions, thus providing experimental evidence for using ALA to treat colonic hypersensitivity in patients with diabetic visceral pain.
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Affiliation(s)
- Yan Sun
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, Suzhou, People's Republic of China
| | - Pan-Pan Yang
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, Suzhou, People's Republic of China
| | - Zhen-Yuan Song
- Department of Endocrinology, The East District of Suzhou Municipal Hospital, Suzhou, People's Republic of China
| | - Yu Feng
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, Suzhou, People's Republic of China
| | - Duan-Min Hu
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, Suzhou, People's Republic of China
| | - Ji Hu
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, Suzhou, People's Republic of China
| | - Guang-Yin Xu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, Institute of Neuroscience, Soochow University, Suzhou, People's Republic of China
| | - Hong-Hong Zhang
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, Suzhou, People's Republic of China.,Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, Institute of Neuroscience, Soochow University, Suzhou, People's Republic of China
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750
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El-Far YM, Zakaria MM, Gabr MM, El Gayar AM, Eissa LA, El-Sherbiny IM. Nanoformulated natural therapeutics for management of streptozotocin-induced diabetes: potential use of curcumin nanoformulation. Nanomedicine (Lond) 2017. [DOI: 10.2217/nnm-2017-0106] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Aim: The goal of this study was to improve curcumin (CUR) aqueous solubility and bioavailability via nanoformulation, and then study its activity and mechanism of action as an antidiabetic agent. Methods: CUR-loaded pluronic nanomicelles (CURnp) were prepared and characterized. Biochemical assessments were performed as well as histological, confocal and RTPCR studies on pancreatic target tissues. Results: CURnp with a diameter of 333 ± 6 nm and ζ potential of -26.1 mv were obtained. Antidiabetic action of CURnp was attributed to significant upregulation of Pdx-1 and NKx6.1 gene expression and achievement of optimum redox balance, which led to alleviation of streptozotocin-induced β-cell damage via a significant upregulation in insulin gene expression proved by RTPCR studies and by the presence of 40% insulin positive cells through confocal microscope studies on pancreatic tissue.
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Affiliation(s)
- Yousra M El-Far
- Department of Biochemistry, Faculty of Pharmacy, Mansoura University, 35516, Egypt
| | | | | | - Amal M El Gayar
- Department of Biochemistry, Faculty of Pharmacy, Mansoura University, 35516, Egypt
| | - Laila A Eissa
- Department of Biochemistry, Faculty of Pharmacy, Mansoura University, 35516, Egypt
| | - Ibrahim M El-Sherbiny
- Center for Materials Science, University of Science & Technology, Zewail City of Science & Technology, 6th October City, 12588 Giza, Egypt
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