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https://www.readbyqxmd.com/read/28425952/antioxidant-and-anti-senescence-effect-of-metformin-on-mouse-olfactory-ensheathing-cells-moecs-may-be-associated-with-increased-brain-derived-neurotrophic-factor-levels-an-ex-vivo-study
#1
Agnieszka Śmieszek, Zuzanna Stręk, Katarzyna Kornicka, Jakub Grzesiak, Christine Weiss, Krzysztof Marycz
Metformin, the popular anti-diabetic drug was shown to exert multiple biological effects. The most recent metformin gained attention as an agent that mobilizes endogenous progenitor cells and enhances regenerative potential of organisms, for example by promoting neurogenesis. In the present study, we examined the role of metformin on mouse olfactory ensheathing cells (mOECs) derived from animals receiving metformin for eight weeks at a concentration equal to 2.8 mg/day. The mOECs expanded ex vivo were characterized in terms of their cellular phenotype, morphology, proliferative activity, viability and accumulation of oxidative stress factors...
April 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28425868/pomegranate-as-a-possible-treatment-in-reducing-risk-of-developing-wound-healing-obesity-neurodegenerative-disorders-and-diabetes-mellitus
#2
Manaf AlMatar, Md Rashedul Islam, Othman Albari, Işıl Var, Fatih Köksal
Four distinguished although overlying stages make up the methodical procedure of wound healing, which are hemostasis, inflammation, proliferation and remodelling. Multiple sclerosis (MS) comprises a persistent inflammatory infection of the central nervous system, and is related to demyelination, neurodegeneration, as well as susceptibility to oxidative pressure. Obesity signifies a swiftly developing danger to the wellbeing of populations in a rising number of nations. Usually called diabetes mellitus (DM) by medical practitioners, diabetes details a collection of metabolic diseases within which the individual has raised blood glucose, either due to an insufficiency of insulin generation, or the lack of suitable response by the body to insulin, or both...
April 19, 2017: Mini Reviews in Medicinal Chemistry
https://www.readbyqxmd.com/read/28419670/sglt2-and-sglt1-renal-expression-in-patients-with-type-2-diabetes
#3
Anna Solini, Chiara Rossi, Chiara Maria Mazzanti, Agnese Proietti, Hermann Koepsell, Ele Ferrannini
AIMS: The notion of an increased expression of SGLT2 in the kidney of patients with type 2 diabetes (T2DM) is based on a single ex vivo study of tubular cells harvested from the urine. DESIGN AND METHODS: We measured SGLT2 and SGLT1 expression in unaffected renal tissue from 19 T2DM patients and 20 age- and eGFR-matched nondiabetic subjects (CT) undergoing unilateral nephrectomy. Expression of SGLT2 and SGLT1 - and their cognate basolateral transporters GLUT2 and GLUT1 - was quantified by real-time and digital PCR; an affinity-purified antibody against human SGLT2 was used localize SGLT2 by immunohistochemistry...
April 17, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28405264/blt2-expression-improves-skin-integrity-and-protects-from-alterations-caused-by-hyperglycemia-in-type-2-diabetes
#4
Alberto Leguina-Ruzzi, Juan P Valderas
Type 2 diabetes (T2D) can go undiagnosed for years, leading to a stage where chronic high blood sugar produces complications such as delayed wound healing. Reports have shown that BLT2 activation improves keratinocyte migration and wound healing, as well as protecting the epidermal barrier through the promotion of actin polymerization. The goal of this study was to elucidate the role of BLT2 expression in skin epithelial integrity in T2D. For this purpose, we used both wild type (WT) and BLT2 knockout mice in a model, in which a T2D-like phenotype was induced by keeping the animals on a high fat (HF) diet over 5 weeks...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/28391908/apob-lipoproteins-and-dysfunctional-white-adipose-tissue-relation-to-risk-factors-for-type-2-diabetes-in-humans
#5
Valérie Lamantia, Simon Bissonnette, Hanny Wassef, Yannick Cyr, Alexis Baass, Robert Dufour, Rémi Rabasa-Lhoret, May Faraj
BACKGROUND: Elevated plasma apoB is an independent predictor of T2D; however, underlying mechanisms remain unclear. Chronic reduction in white adipose tissue (WAT) function promotes T2D. We reported that differentiation of preadipocytes and acute incubation of human WAT with LDL induce their dysfunction (decreased hydrolysis and storage of triglyceride-rich lipoproteins [TRL]). OBJECTIVE: To examine the hypothesis that the association of plasma apoB with T2D risk factors, hypertriglyceridemia (hyperTG), insulin resistance (IR), and hyperinsulinemia, was dependent on WAT dysfunction...
January 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28391055/ferulic-acid-4-o-sulfate-rather-than-ferulic-acid-relaxes-arteries-and-lowers-blood-pressure-in-mice
#6
Evelien Van Rymenant, John Van Camp, Bart Pauwels, Charlotte Boydens, Laura Vanden Daele, Katrijn Beerens, Peter Brouckaert, Guy Smagghe, Asimina Kerimi, Gary Williamson, Charlotte Grootaert, Johan Van de Voorde
Consumption of foods rich in ferulic acid (FA) such as wholegrain cereals, or FA precursors such as chlorogenic acids in coffee, is inversely correlated with risk of cardiovascular disease and type 2 diabetes. As a result of digestion and phase II metabolism in the gut and liver, FA is converted predominantly into ferulic acid-4-O-sulfate (FA-sul), an abundant plasma metabolite. Although FA-sul is the main metabolite, very little has been reported regarding its bioactivities. We have compared the ex vivo vasorelaxing effect of FA and FA-sul (10(-7)-3...
March 23, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28365524/pancreas-and-liver-uptake-of-new-radiolabeled-incretins-glp-1-and-exendin-4-in-models-of-diet-induced-and-diet-restricted-obesity
#7
Daniele Seo, Bluma Linkowski Faintuch, Erica Aparecida de Oliveira, Joel Faintuch
INTRODUCTION: Radiolabeled GLP-1 and its analog Exendin-4, have been employed in diabetes and insulinoma. No protocol in conventional Diet-Induced Obesity (DIO), and Diet-Restricted Obesity (DRO), has been identified. Aiming to assess pancreatic beta cell uptake in DIO and DRO, a protocol was designed. METHODS: GLP-1-βAla-HYNIC and HYNIC-βAla-Exendin-4 were labeled with technetium-99m. Four Swiss mouse models were adopted: Controls (C), Alloxan Diabetes Controls (ADC), DIO and DRO...
March 18, 2017: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/28362475/the-genetic-basis-of-obesity-complications
#8
Katarzyna Skrypnik, Joanna Suliburska, Damian Skrypnik, Łukasz Pilarski, Julita Reguła, Paweł Bogdański
Intensive research is currently being performed into the genetic background of excess body mass compli- cations such as diabetes, cardiovascular disorders, especially atherosclerosis and coronary heart disease. Chronic inflammation is an important process in the pathogenesis of obesity, wherein there is an aberrant ex- pression of genes encoding adipokines. Visceral tissue is characterized by a higher expression and secretion of interleukin-8, interleukin-1ß and plasminogen activator inhibitor 1 in the subcutaneous tissue secretion of leptin prevails...
January 2017: Acta Scientiarum Polonorum. Technologia Alimentaria
https://www.readbyqxmd.com/read/28352940/cytochrome-p450-epoxygenase-derived-epoxyeicosatrienoic-acids-contribute-to-insulin-sensitivity-in-mice-and-in-humans
#9
Mahesha H Gangadhariah, Blake W Dieckmann, Louise Lantier, Li Kang, David H Wasserman, Manuel Chiusa, Charles F Caskey, Jaime Dickerson, Pengcheng Luo, Jorge L Gamboa, Jorge H Capdevila, John D Imig, Chang Yu, Ambra Pozzi, James M Luther
AIMS/HYPOTHESIS: Insulin resistance is frequently associated with hypertension and type 2 diabetes. The cytochrome P450 (CYP) arachidonic acid epoxygenases (CYP2C, CYP2J) and their epoxyeicosatrienoic acid (EET) products lower blood pressure and may also improve glucose homeostasis. However, the direct contribution of endogenous EET production on insulin sensitivity has not been previously investigated. In this study, we tested the hypothesis that endogenous CYP2C-derived EETs alter insulin sensitivity by analysing mice lacking CYP2C44, a major EET producing enzyme, and by testing the association of plasma EETs with insulin sensitivity in humans...
March 28, 2017: Diabetologia
https://www.readbyqxmd.com/read/28349070/diabetes-is-associated-with-increased-autoreactivity-of-mannan-binding-lectin
#10
Esben Axelgaard, Jakob Appel Østergaard, Steffen Thiel, Troels Krarup Hansen
Mannan-binding lectin (MBL) has been reported to be involved in the pathophysiology of diabetic nephropathy. MBL is a pattern-recognition molecule of the innate immune system that initiates the lectin pathway of the complement system upon recognition of evolutionary conserved pathogen-associated molecular patterns or to altered self-tissue. Our group have previously shown direct effects of MBL on diabetes-induced kidney damage, and we hypothesized that MBL may cause autoactivation of the complement system via binding to neoepitopes induced by hyperglycemia...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28344345/gastric-bypass-surgery-with-exercise-alters-plasma-micrornas-that-predict-improvements-in-cardiometabolic-risk
#11
Y O N Lopez, P M Coen, B H Goodpaster, A A Seyhan
BACKGROUND/OBJECTIVES: Roux-en-Y gastric bypass (RYGB) surgery improves insulin sensitivity (SI) and β-cell function in obese non-diabetic subjects. Exercise also improves SI and may be an effective adjunct therapy to RYGB surgery. However, the mechanisms by which exercise or weight-loss improve peripheral SI after RYGB surgery are unclear. We hypothesized that microRNAs (miRNAs) mediate at least some of the regulatory processes driving such mechanisms. Consequently, this work aimed at profiling plasma miRNAs in participants of the Physical Activity Following Surgery Induced Weight Loss study (clinicaltrials...
March 27, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28342603/invited-review-the-anti-inflammatory-properties-of-dairy-lipids
#12
R Lordan, I Zabetakis
Dairy product consumption is often associated with negative effects because of its naturally high levels of saturated fatty acids. However, recent research has shown that dairy lipids possess putative bioactivity against chronic inflammation. Inflammation triggers the onset of several chronic diseases, including cardiovascular disease, type 2 diabetes mellitus, obesity, and cancer. This review discusses the anti-inflammatory properties of dairy lipids found in milk, yogurt, and cheese, and it examines them in relation to their implications for human health: their protective effects and their role in pathology...
March 22, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28337858/transdermal-protein-delivery-using-choline-and-geranate-cage-deep-eutectic-solvent
#13
Amrita Banerjee, Kelly Ibsen, Yasunori Iwao, Michael Zakrewsky, Samir Mitragotri
Transdermal delivery of peptides and other biological macromolecules is limited due to skin's inherent low permeability. Here, the authors report the use of a deep eutectic solvent, choline and geranate (CAGE), to enhance topical delivery of proteins such as bovine serum albumin (BSA, molecular weight: ≈66 kDa), ovalbumin (OVA, molecular weight: ≈45 kDa) and insulin (INS, molecular weight: 5.8 kDa). CAGE enhances permeation of BSA, OVA, and insulin into porcine skin ex vivo, penetrating deep into the epidermis and dermis...
March 24, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28329121/very-low-calorie-diets-for-weight-loss-in-obese-older-adults-a-randomized-trial
#14
Cilla J Haywood, Luke A Prendergast, Katrina Purcell, Lauren Le Fevre, Wen Kwang Lim, Mary Galea, Joseph Proietto
Background: Obesity contributes to disability in older adults, and this is offset by weight loss and exercise. Very Low Calorie Diets (VLCDs) achieve rapid weight loss; however, these have not been rigorously evaluated in older people. Methods: A randomized trial was conducted from August 2012 through December 2015. The intervention was 12 weeks of thrice weekly exercise combined with either healthy eating advice (Ex/HE), hypocaloric diet (Ex/Diet), or VLCD (Ex/VLCD)...
February 20, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28325753/mouse-model-for-inherited-renal-fibrosis-associated-with-endoplasmic-reticulum-stress
#15
Sian E Piret, Eric Olinger, Anita A C Reed, M Andrew Nesbit, Tertius A Hough, Liz Bentley, Olivier Devuyst, Roger Cox, Rajesh V Thakker
Renal fibrosis is a common feature of renal failure resulting from multiple aetiologies, including diabetic nephropathy, hypertension and inherited renal disorders. However, the mechanisms of renal fibrosis are incompletely understood and we therefore explored these by establishing a mouse model for a renal tubular disorder, referred to as autosomal dominant tubulointerstitial kidney disease (ADTKD) due to missense uromodulin (UMOD) mutations (ADTKD-UMOD). ADTKD-UMOD, which is associated with retention of mutant uromodulin in the endoplasmic reticulum (ER) of renal thick ascending limb cells, is characterized by hyperuricemia, interstitial fibrosis, inflammation, and renal failure, and we used targeted homologous recombination to generate a knock-in mouse model with an ADTKD-causing missense cysteine to arginine uromodulin mutation (C125R)...
March 21, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28324804/high-density-lipoprotein-immunomodulates-the-functional-activities-of-macrophage-and-cytokines-produced-during-ex-vivo-macrophage-cd4-t-cell-crosstalk-at-the-recent-onset-human-type-1-diabetes
#16
Ibtissem Benghalem, Warda Meziane, Zeyneb Hadjidj, Lamia Ysmail-Dahlouk, Ahmed Belamri, Kheira Mouhadjer, Mourad Aribi
BACKGROUND: Both CD4(+) T cells and macrophages are mainly involved in the autoimmune-mediated β-cells destruction in type 1 diabetes (T1D). The aim of this study was to examine the effect of HDL on functional activities of macrophage and its ability to regulate the production of cytokines in autologous mixed macrophage/CD4(+) T cells at the recent-onset human type 1 diabetes. METHODS: Cell samples were isolated from volunteers with recent-onset T1D or healthy controls...
March 16, 2017: Cytokine
https://www.readbyqxmd.com/read/28319060/the-anti-diabetic-drug-exenatide-a-glucagon-like-peptide-1-receptor-agonist-counteracts-hepatocarcinogenesis-through-camp-pka-egfr-stat3-axis
#17
M Zhou, M T S Mok, H Sun, A W Chan, Y Huang, A S L Cheng, G Xu
Epidemiological studies have demonstrated a close association of type 2 diabetes and hepatocellular carcinoma (HCC). Exenatide (Ex-4), a potent diabetes drug targeting glucagon-like peptide-1 receptor (GLP-1R), is protective against non-alcoholic fatty liver disease (NAFLD). However, the Ex-4 function and GLP-1R status have yet been explored in HCC. Herein we investigated the effect of Ex-4 in diethylnitrosamine (DEN)-treated mice consuming control or high-fat high-carbohydrate diet. Administration of Ex-4 significantly improved obesity-induced hyperglycemia and hyperlipidemia and reduced HCC multiplicity in obese DEN-treated mice, in which suppressed proliferation and induced apoptosis were confined to tumor cells...
March 20, 2017: Oncogene
https://www.readbyqxmd.com/read/28317364/-expression-and-effect-of-s100a9-in-the-periodontium-of-diabetic-rats
#18
Sun Wenhua, Chen Guoqing, Tian Weidong
OBJECTIVE: The study seeks to investigate the expression of S100A9 and its potential role in periodontal diseases induced by diabetes. METHODS: A diabetic SD rat model was established through intraperitoneal injection of streptozotocin (STZ). Hematoxylin-eosin (HE) staining was performed to study the structure of the periodontium of diabetic rats. Using immunohistochemical staining, the distribution of S100A9 expression was detected in the periodontium of diabetic rats...
August 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28314763/endothelial-dysfunction-inhibits-the-ability-of-haptoglobin-to-prevent-hemoglobin-induced-hypertension
#19
Jan A Graw, Binglan Yu, Emanuele Rezoagli, H Shaw Warren, Emmanuel S Buys, Donald B Bloch, Warren M Zapol
BACKGROUND: Intravascular hemolysis produces injury in a variety of human diseases including hemoglobinopathies, malaria, and sepsis. The adverse effects of increased plasma hemoglobin are partly mediated by depletion of nitric oxide (NO) and result in vasoconstriction. Circulating plasma proteins haptoglobin and hemopexin scavenge extracellular hemoglobin and cell-free heme, respectively. METHODS: The ability of human haptoglobin or hemopexin to inhibit the adverse effects of NO-scavenging by circulating murine hemoglobin was tested in C57Bl/6 mice...
March 17, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28302722/amyloid-%C3%AE-oligomers-transiently-inhibit-amp-activated-kinase-and-cause-metabolic-defects-in-hippocampal-neurons
#20
Gisele S Seixas da Silva, Helen M Melo, Mychael V Lourenco, Natalia de M Lyra E Silva, Marcelo B de Carvalho, Soniza Alves-Leon, Jorge M de Souza, William L Klein, Wagner S da-Silva, Sergio T Ferreira, Fernanda G De Felice
AMP-activated kinase (AMPK) is a key player in energy sensing and metabolic reprogramming under cellular energy restriction. Several studies have linked impaired AMPK function to peripheral metabolic diseases such as diabetes. However, the impact of neurological disorders, such as Alzheimer disease (AD), on AMPK function and downstream effects of altered AMPK activity on neuronal metabolism have been investigated only recently. Here, we report the impact of A β oligomers (AβOs), synaptotoxins that accumulate in AD brains, on neuronal AMPK activity...
March 16, 2017: Journal of Biological Chemistry
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