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https://www.readbyqxmd.com/read/28208627/phytochemical-analysis-of-agrimonia-pilosa-ledeb-its-antioxidant-activity-and-aldose-reductase-inhibitory-potential
#1
Set Byeol Kim, Seung Hwan Hwang, Hong-Won Suh, Soon Sung Lim
The aim of this study was to determine aldose reductase (AR) inhibitory activity and 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity of compounds from Agrimonia pilosa Ledeb (AP). We isolated agrimoniin (AM), four flavonoid glucosides and two flavonoid glucuronides from the n-butanol fraction of AP 50% methanol extract. In addition to isolated compounds, the AR-inhibitory activity and the DPPH free radical scavenging activity of catechin, 5-flavonoids, and 4-flavonoid glucosides (known components of AP) against rat lens AR (RLAR) and DPPH assay were measured...
February 10, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28208021/exercise-timing-and-blood-lactate-concentrations-in-individuals-with-type-2-diabetes
#2
Timothy D Heden, Ying Liu, Jill A Kanaley
The purpose of this study was to characterize how resistance exercise prior to or after a meal alters fasting and postprandial blood lactate concentrations in individuals with type 2 diabetes. Obese individuals with type 2 diabetes (N=12) completed three, 2-d trials including: 1) no exercise (NoEx), 2) resistance exercise prior to dinner (Ex-M), and 3) resistance exercise beginning 45-min postdinner (M-Ex). During day one of each trial fasting and postprandial blood lactate concentrations, perceived exertion, and substrate oxidation were measured, and subsequently on day two the following morning fasting blood lactate was measured...
February 16, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28202074/exendin-4-in-combination-with-adipose-derived-stem-cells-promotes-angiogenesis-and-improves-diabetic-wound-healing
#3
Eunhui Seo, Jae Soo Lim, Jin-Bum Jun, Woohyuk Choi, In-Sun Hong, Hee-Sook Jun
BACKGROUND: Diminished wound healing is a major complication of diabetes mellitus and can lead to foot ulcers. However, there are limited therapeutic methods to treat this condition. Exendin-4 (Ex-4), a glucagon-like peptide-1 receptor agonist, is known to have many beneficial effects on diabetes. In addition, mesenchymal stem cells are known to have wound healing effects. We investigated the effects of Ex-4 in combination with human adipose tissue-derived stem cells (ADSCs) on diabetic wound healing in a diabetic animal model...
February 15, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28193997/stepwise-reprogramming-of-liver-cells-to-a-pancreas-progenitor-state-by-the-transcriptional-regulator-tgif2
#4
Nuria Cerdá-Esteban, Heike Naumann, Silvia Ruzittu, Nancy Mah, Igor M Pongrac, Corinna Cozzitorto, Angela Hommel, Miguel A Andrade-Navarro, Ezio Bonifacio, Francesca M Spagnoli
The development of a successful lineage reprogramming strategy of liver to pancreas holds promises for the treatment and potential cure of diabetes. The liver is an ideal tissue source for generating pancreatic cells, because of its close developmental origin with the pancreas and its regenerative ability. Yet, the molecular bases of hepatic and pancreatic cellular plasticity are still poorly understood. Here, we report that the TALE homeoprotein TGIF2 acts as a developmental regulator of the pancreas versus liver fate decision and is sufficient to elicit liver-to-pancreas fate conversion both ex vivo and in vivo...
February 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/28190469/proanthocyanidins-from-vitis-vinifera-inhibit-oxidative-stress-induced-vascular-impairment-in-pulmonary-arteries-from-diabetic-rats
#5
Christian Pinna, Paolo Morazzoni, Angelo Sala
BACKGROUND: Vitis vinifera L. (grape seed extract) is a natural source of proanthocyanidins with antioxidant and free radical-scavenging activities. HYPOTHESIS: Grape seed extract supplementation may prevent vascular endothelium impairment associated with diabetes mellitus in rat pulmonary artery. STUDY DESIGN: We evaluated endothelial function of rat pulmonary artery ex-vivo at the intermediate stage (4 weeks) of streptozotocin (STZ)-induced diabetes mellitus...
February 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28188070/-inflammation-in-the-perivascular-adipose-tissue-and-atherosclerosis
#6
Nadjiba Hamlat-Khennaf, Samia Neggazi, Hanene Ayari, Patrick Feugier, Giampiero Bricca, Souhila Aouichat-Bouguerra, Michel Beylot
In atherosclerosis studies, there are few data, especially in men, on the biology of perivascular adipose tissue (PVAT) compared to that of other adipose tissue (AT), on amendments in obesity, and its possible role in the development of atherosclerosis. We conducted an ex vivo human study on pericarotid adipose tissue-collected in the immediate vicinity (PVATp) and away from the plate (tapas)-and subcutaneous (SC) neck gathered during surgery from patients suffering from atheromatous carotid disease. In addition, we conducted a study in obese Zucker rats (models of obesity and insulin resistance) and Wistar rats subjected to moderate stress...
February 7, 2017: Comptes Rendus Biologies
https://www.readbyqxmd.com/read/28183786/extracellular-rnas-are-associated-with-insulin-resistance-and-metabolic-phenotypes
#7
Ravi Shah, Venkatesh Murthy, Michael Pacold, Kirsty Danielson, Kahraman Tanriverdi, Martin G Larson, Kristina Hanspers, Alexander Pico, Eric Mick, Jared Reis, Sarah de Ferranti, Elizaveta Freinkman, Daniel Levy, Udo Hoffmann, Stavroula Osganian, Saumya Das, Jane E Freedman
OBJECTIVE: Insulin resistance (IR) is a hallmark of obesity and metabolic disease. Circulating extracellular RNAs (ex-RNAs), stable RNA molecules in plasma, may play a role in IR, though most studies on ex-RNAs in IR are small. We sought to characterize the relationship between ex-RNAs and metabolic phenotypes in a large community-based human cohort. RESEARCH DESIGN AND METHODS: We measured circulating plasma ex-RNAs in 2,317 participants without diabetes in the Framingham Heart Study (FHS) Offspring Cohort at cycle 8 and defined associations between ex-RNAs and IR (measured by circulating insulin level)...
February 9, 2017: Diabetes Care
https://www.readbyqxmd.com/read/28182694/insulin-treatment-prevents-wounding-associated-changes-in-tissue-and-circulating-neutrophil-mmp-9-and-ngal-in-diabetic-rats
#8
Maryam Abdollahi, Taria Shin Yi Ng, Alireza Rezaeizadeh, Sarah Aamidor, Stephen M Twigg, Danqing Min, Susan V McLennan
Neutrophils are important for wound repair, but their persistence can impair the healing process. Neutrophils express matrix metalloproteinases including MMP-9 and its regulator neutrophil gelatinase associated lipocalin (NGAL). Whether wounding affects neutrophil MMP-9 and NGAL in diabetic animals is not known. Skin wound tissue MMP-9 and NGAL was examined by qRT-PCR and immunohistochemistry in control, diabetic and insulin treated diabetic rats. The temporal expression of MMP-9 and NGAL mRNA, MMP-9 activity and the NGAL/MMP-9 complex was also investigated in an implant model and their circulating neutrophils...
2017: PloS One
https://www.readbyqxmd.com/read/28177738/sorbitol-increases-muscle-glucose-uptake-ex-vivo-and-inhibits-intestinal-glucose-absorption-ex-vivo-and-in-normal-and-type-2-diabetic-rats
#9
Chika I Chukwuma, Md Shahidul Islam
Previous studies have suggested that sorbitol, a known polyol sweetener possesses glycemic control potentials. However, the effect of sorbitol on intestinal glucose absorption and muscle glucose uptake still remains elusive. The present study investigated the effects of sorbitol on intestinal glucose absorption and muscle glucose uptake as possible anti-hyperglycemic or glycemic control potentials using <i>ex vivo </i>and in vivo experimental models. Sorbitol (2.5% to 20%) inhibited glucose absorption in isolated rat jejuna (IC<sub>50</sub> = 14...
December 12, 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28163043/p53-modulates-the-fate-of-cardiac-progenitor-cells-ex-vivo-and-in-the-diabetic-heart-in-vivo
#10
Ramaswamy Kannappan, Alex Matsuda, João Ferreira-Martins, Eric Zhang, Giorgia Palano, Anna Czarna, Mauricio Castro Cabral-Da-Silva, Adriana Bastos-Carvalho, Fumihiro Sanada, Noriko Ide, Marcello Rota, Maria A Blasco, Manuel Serrano, Piero Anversa, Annarosa Leri
p53 is an important modulator of stem cell fate, but its role in cardiac progenitor cells (CPCs) is unknown. Here, we tested the effects of a single extra-copy of p53 on the function of CPCs in the presence of oxidative stress mediated by doxorubicin in vitro and type-1 diabetes in vivo. CPCs were obtained from super-p53 transgenic mice (p53-tg), in which the additional allele is regulated in a manner similar to the endogenous protein. Old CPCs with increased p53 dosage showed a superior ability to sustain oxidative stress, repair DNA damage and restore cell division...
January 31, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28162170/-effects-of-different-sulfonylureas-on-the-warm-up-phenomenon-in-diabetes-patients-with-coronary-artery-disease
#11
M Zheng, L Z Li, Z A Jiang, L H Li, Y G Feng, X H Fu
Objective: To explore the different effects of chronic treatment with glibenclamide and gliclazide on the warm-up phenomenon in diabetes patients with coronary artery disease. Methods: A total of seventy-one patients with chronic stable angina and diabetes who were positive for exercise test and was proven that the stenosis degree was 70%-90% in at least one major branch through coronary angiogram were included into the study.They were divided into three groups, diet control group (DMD), glibenclamide group (DMG1) and gliclazide group (DMG2), according to the treatment of diabetes...
January 17, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28155245/scriptaid-enhances-skeletal-muscle-insulin-action-and-cardiac-function-in-obese-mice
#12
Vidhi Gaur, Timothy Connor, Kylie Venardos, Darren C Henstridge, Sheree D Martin, Courtney Swinton, Shona Morrison, Kathryn Aston-Mourney, Stefan M Gehrig, Roelof van Ewijk, Gordon S Lynch, Mark A Febbraio, Gregory R Steinberg, Mark Hargreaves, Ken R Walder, Sean L McGee
AIMS/HYPOTHESIS: Current drugs used to treat metabolic diseases such as obesity and type 2 diabetes have limited efficacy in directly normalising muscle insulin action, while exercise is effective in enhancing this aspect of metabolic disease. We recently identified Scriptaid as a compound that can replicate aspects of the exercise adaptive response, through disruption of the class IIa HDAC corepressor complex. The Aim of this study was to determine the effect of Scriptaid on muscle insulin action in obesity...
February 2, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28153676/a-model-to-estimate-cost-savings-in-diabetic-foot-ulcer-prevention-efforts
#13
Neal R Barshes, Samira Saedi, James Wrobel, Panos Kougias, O Erhun Kundakcioglu, David G Armstrong
BACKGROUND: Sustained efforts at preventing diabetic foot ulcers (DFUs) and subsequent leg amputations are sporadic in most health care systems despite the high costs associated with such complications. We sought to estimate effectiveness targets at which cost-savings (i.e. improved health outcomes at decreased total costs) might occur. METHODS: A Markov model with probabilistic sensitivity analyses was used to simulate the five-year survival, incidence of foot complications, and total health care costs in a hypothetical population of 100,000 people with diabetes...
January 21, 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/28137582/wound-healing-potential-of-adipose-tissue-stem-cell-extract
#14
You Kyung Na, Jae-Jun Ban, Mi Jung Lee, Wooseok Im, Manho Kim
Adipose tissue stem cells (ATSCs) are considered as a promising source in the field of cell therapy and regenerative medicine. In addition to direct cell replacement using stem cells, intercellular molecule exchange by stem cell secretory factors showed beneficial effects by reducing tissue damage and augmentation of endogenous repair. Delayed cutaneous wound healing is implicated in many conditions such as diabetes, aging, stress and alcohol consumption. However, the effects of cell-free extract of ATSCs (ATSC-Ex) containing secretome on wound healing process has not been investigated...
January 27, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28126606/regulation-of-the-human-lipoprotein-lipase-gene-by-the-forkhead-box-transcription-factor-foxa2-hnf-3%C3%AE-in-hepatic-cells
#15
Maria Kanaki, Dimitris Kardassis
Lipoprotein lipase (LPL) plays a major role in the hydrolysis of triglycerides (TG) from circulating TG-rich lipoproteins. The role of LPL in the liver has been controversial but recent studies in mice with liver LPL overexpression or deficiency have revealed important new roles of the enzyme in glucose and lipid metabolism. The objective of this study was to identify regulatory elements and factors that control the transcription of the human LPL gene in hepatocytes. Deletion analysis of the human LPL promoter revealed that the proximal region which harbors a binding site for the forkhead box transcription factor FOXA2/HNF-3β at position -47/-40 is important for its hepatic cell activity...
January 23, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28117148/generation-of-human-islet-specific-regulatory-t-cells-by-tcr-gene-transfer
#16
Caroline M Hull, Lauren E Nickolay, Megan Estorninho, Max W Richardson, James L Riley, Mark Peakman, John Maher, Timothy I M Tree
Based on the success in animal models of type 1 diabetes (T1D), clinical trials of adoptive regulatory T cell (Treg) therapy are underway using ex vivo expanded polyclonal Tregs. However, pre-clinical data also demonstrate that islet-specific Tregs are more potent than polyclonal Tregs at reversing T1D. Translation of this approach into man will require methods to generate large populations of islet-specific Tregs which, to date, has proved to be a major hurdle. Here we demonstrate the feasibility of lentiviral-mediated T cell receptor (TCR) gene transfer to confer antigen specificity on polyclonal human Tregs...
January 20, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28116224/stromal-cell-derived-growth-factor-1-alpha-elastin-like-peptide-fusion-protein-promotes-cell-migration-and-revascularization-of-experimental-wounds-in-diabetic-mice
#17
Agnes Yeboah, Tim Maguire, Rene Schloss, Francois Berthiaume, Martin L Yarmush
Objective: In previous work, we demonstrated the development of a novel fusion protein containing stromal cell-derived growth factor-1 alpha juxtaposed to an elastin-like peptide (SDF1-ELP), which has similar bioactivity, but is more stable in elastase than SDF1. Herein, we compare the ability of a single topical application of SDF1-ELP to that of SDF1 in healing 1 × 1 cm excisional wounds in diabetic mice. Approach: Human Leukemia-60 cells were used to demonstrate the chemotactic potential of SDF1-ELP versus SDF1 in vitro...
January 1, 2017: Advances in Wound Care
https://www.readbyqxmd.com/read/28115398/pro-inflammatory-effects-of-hypoglycemia-in-humans-with-or-without-diabetes
#18
Jacqueline M Ratter, Hanne M M Rooijackers, Cees J Tack, Anneke G M Hijmans, Mihai G Netea, Bastiaan E de Galan, Rinke Stienstra
Severe hypoglycemic events have been associated with increased cardiovascular mortality in patients with diabetes, which may be explained by hypoglycemia-induced inflammation. We used ex vivo stimulations of peripheral blood mononuclear cells (PBMCs) and monocytes obtained during hyperinsulinemic euglycemic (5.0 mmol/L)-hypoglycemic (2.6 mmol/L) clamps in 11 healthy participants, 10 patients with type 1 diabetes with normal awareness of hypoglycemia (NAH) and 10 patients with impaired awareness (IAH) to test whether the composition and inflammatory function of immune cells adapt a more pro-inflammatory state after hypoglycemia...
January 23, 2017: Diabetes
https://www.readbyqxmd.com/read/28112681/acute-dietary-fat-intake-initiates-alterations-in-energy-metabolism-and-insulin-resistance
#19
Elisa Álvarez Hernández, Sabine Kahl, Anett Seelig, Paul Begovatz, Martin Irmler, Yuliya Kupriyanova, Bettina Nowotny, Peter Nowotny, Christian Herder, Cristina Barosa, Filipa Carvalho, Jan Rozman, Susanne Neschen, John G Jones, Johannes Beckers, Martin Hrabě de Angelis, Michael Roden
BACKGROUND: Dietary intake of saturated fat is a likely contributor to nonalcoholic fatty liver disease (NAFLD) and insulin resistance, but the mechanisms that initiate these abnormalities in humans remain unclear. We examined the effects of a single oral saturated fat load on insulin sensitivity, hepatic glucose metabolism, and lipid metabolism in humans. Similarly, initiating mechanisms were examined after an equivalent challenge in mice. METHODS: Fourteen lean, healthy individuals randomly received either palm oil (PO) or vehicle (VCL)...
February 1, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28111966/procoagulant-activity-in-patients-with-combined-type-2-diabetes-and-coronary-artery-disease-no-effects-of-long-term-exercise-training
#20
Vibeke Bratseth, Rune Byrkjeland, Ida U Njerve, Svein Solheim, Harald Arnesen, Ingebjørg Seljeflot
We investigated the effects of 12-month exercise training on hypercoagulability in patients with combined type 2 diabetes mellitus and coronary artery disease. Associations with severity of disease were further explored. Patients ( n = 131) were randomized to exercise training or a control group. Blood was collected at inclusion and after 12 months. Tissue factor, free and total tissue factor pathway inhibitor, prothrombin fragment 1 + 2 (F1 + 2) and D-dimer were determined by enzyme-linked immunosorbent assay and ex vivo thrombin generation by the calibrated automated thrombogram assay...
January 1, 2017: Diabetes & Vascular Disease Research
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