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Endothelial function diet

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https://www.readbyqxmd.com/read/27914528/food-advanced-glycation-end-products-aggravate-the-diabetic-vascular-complications-via-modulating-the-ages-rage-pathway
#1
Xing Lv, Gao-Hong Lv, Guo-Ying Dai, Hong-Mei Sun, Hui-Qin Xu
The aim of this study was to investigate the effects of high-advanced glycation end products (AGEs) diet on diabetic vascular complications. The Streptozocin (STZ)-induced diabetic mice were fed with high-AGEs diet. Diabetic characteristics, indicators of renal and cardiovascular functions, and pathohistology of pancreas, heart and renal were evaluated. AGEs/RAGE/ROS pathway parameters were determined. During the experiments, the diabetic mice exhibited typical characteristics including weight loss, polydipsia, polyphagia, polyuria, high-blood glucose, and low-serum insulin levels...
November 2016: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/27909228/divergent-outcomes-of-fructose-consumption-on-exercise-capacity-of-rats-friend-or-foe
#2
Angela Sun, An Huang, Elizabeth Kertowidjojo, Su Song, Thomas H Hintze, Dong Sun
To test the hypothesis that high fructose (HF) consumption divergently affects exercise capability, as a function of feeding duration, rats were fed a normal (as control) or a normal caloric diet with HF for 3, 6, 10 and 30 days respectively, and run on a treadmill. Results show that running distance and work were significantly increased, associated with greater exercise oxygen consumption in rats fed HF for 3 (HF-3D) and 6 days, but were decreased in rats fed HF for 30 days (HF-30D) compared to their respective control rats...
December 1, 2016: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27899529/short-term-effects-of-trans-fatty-acids-from-ruminant-and-industrial-sources-on-surrogate-markers-of-cardiovascular-risk-in-healthy-men-and-women-a-randomized-controlled-double-blind-trial
#3
Thomas Radtke, Alexandra Schmid, Anja Trepp, Frieda Dähler, Michael Coslovsky, Prisca Eser, Matthias Wilhelm, Hugo Saner
OBJECTIVE: The aim of this study was to determine short-term effects of trans fatty acid (TFA) intake from ruminant and industrial sources on surrogate markers of cardiovascular risk in the context of a balanced diet with 30-36% of daily energy from fat. DESIGN: Prospective, randomized, double-blind, parallel-design study. METHODS: In this study, 142 healthy volunteers aged 45 to 69 years were randomly allocated to three different diets: either a diet enriched with 2% of daily energy intake from ruminant TFA (rTFA) or with industrial TFA (iTFA), or a diet without TFA (wTFA), for a duration of four weeks...
November 29, 2016: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/27899343/long-term-high-fat-diet-induces-hippocampal-microvascular-insulin-resistance-and-cognitive-dysfunction
#4
Zhuo Fu, Jing Wu, Tanseli Nesil, Ming D Li, Kevin W Aylor, Zhenqi Liu
Insulin action on hippocampus improves cognitive function and obesity and type 2 diabetes are associated with decreased cognitive function. Cerebral microvasculature plays a critical role in maintaining cerebral vitality and function by supplying nutrients, oxygen and hormones such as insulin to cerebral parenchyma including hippocampus. In skeletal muscle insulin actively regulates microvascular opening and closure and this action is impaired in the insulin resistant states. To examine insulin's action on hippocampal microvasculature and parenchyma and the impact of diet-induced obesity we determined cognitive function, and microvascular insulin responses, parenchyma insulin responses and capillary density in the hippocampus in 2-month and 8-month rats on chow diet and 8-month rats on long-term high-fat diet (6 months)...
November 29, 2016: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27881395/diet-induced-weight-loss-improves-not-only-cardiometabolic-risk-markers-but-also-markers-of-vascular-function-a-randomized-controlled-trial-in-abdominally-obese-men
#5
Peter J Joris, Jogchum Plat, Yvo Ham Kusters, Alfons Jhm Houben, Coen DA Stehouwer, Casper G Schalkwijk, Ronald P Mensink
BACKGROUND: Many trials assessing effects of dietary weight loss on vascular function have been performed without no-weight loss control groups and in individuals with obesity-related morbidities. Usually a limited set of vascular function markers has been investigated. OBJECTIVE: The objective of this study was to examine effects of diet-induced weight loss on various vascular function markers and differences between normal-weight and abdominally obese men at baseline and after weight reduction...
November 23, 2016: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27872172/urea-a-true-uremic-toxin-the-empire-strikes-back
#6
REVIEW
Wei Ling Lau, Nosratola D Vaziri
Blood levels of urea rise with progressive decline in kidney function. Older studies examining acute urea infusion suggested that urea was well-tolerated at levels 8-10× above normal values. More recent in vitro and in vivo work argue the opposite and demonstrate both direct and indirect toxicities of urea, which probably promote the premature aging phenotype that is pervasive in chronic kidney disease (CKD). Elevated urea at concentrations typically encountered in uremic patients induces disintegration of the gut epithelial barrier, leading to translocation of bacterial toxins into the bloodstream and systemic inflammation...
January 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/27870582/markers-of-islet-endothelial-dysfunction-occur-in-male-db-db-mice-and-may-contribute-to-reduced-insulin-release
#7
Meghan F Hogan, Amy W Liu, Michael J Peters, Joshua R Willard, Zaheen Rabbani, Erik C Bartholomew, Adam Ottley, Rebecca L Hull
Islet endothelial cells produce paracrine factors that support β-cell function and growth. Endothelial dysfunction underlies diabetic microvascular complications; thus we hypothesized that in diabetes, islet endothelial cells become dysfunctional and this may contribute to β-cell secretory dysfunction. Islets/islet endothelial cells were isolated from diabetic db/db mice, treated with or without the glucose-lowering agent phlorizin, or C57BL/6J mice fed a high fat diet for 18 weeks (and appropriate controls)...
November 21, 2016: Endocrinology
https://www.readbyqxmd.com/read/27861612/clic1-inhibition-attenuates-vascular-inflammation-oxidative-stress-and-endothelial-injury
#8
Yingling Xu, Ji Zhu, Xiao Hu, Cui Wang, Dezhao Lu, Chenxue Gong, Jinhuan Yang, Lei Zong
Endothelial dysfunction, which includes endothelial oxidative damage and vascular inflammation, is a key initiating step in the pathogenesis of atherosclerosis (AS) and an independent risk factor for this disorder. Intracellular chloride channel 1 (CLIC1), a novel metamorphic protein, acts as a sensor of cell oxidation and is involved in inflammation. In this study, we hypothesize that CLIC1 plays an important role in AS. Apolipoprotein E-deficient mice were supplied with a normal diet or a high-fat and high-cholesterol diet for 8 weeks...
2016: PloS One
https://www.readbyqxmd.com/read/27856609/ppar%C3%AE-is-required-for-exercise-to-attenuate-endoplasmic-reticulum-stress-and-endothelial-dysfunction-in-diabetic-mice
#9
Wai San Cheang, Wing Tak Wong, Lei Zhao, Jian Xu, Li Wang, Chi Wai Lau, Zhen Yu Chen, Ronald Ching Wan Ma, Aimin Xu, Nanping Wang, Xiao Yu Tian, Yu Huang
Physical activity has profound benefits on health especially cardiometablic wellness. Experiments on rodents with trained exercise showed that exercise improves vascular function and reduces vascular inflammation by modulating the balance between nitric oxide (NO) and oxidative stress. However, it is unclear what is the upstream regulator of exercise-induced vascular benefits. We aim to investigate the involvement of peroxisome proliferator-activated receptor δ (PPARδ) in exercise-induced vascular functional improvement...
November 17, 2016: Diabetes
https://www.readbyqxmd.com/read/27836326/diabetes-mellitus-influences-the-expression-of-npy-and-vegf-in-neurons-of-rat-trigeminal-ganglion
#10
Milka Jerić, Katarina Vukojević, Ana Vuica, Natalija Filipović
BACKGROUND: Diabetes mellitus (DM) influences the trigeminal nerve function by changing the pain response and transduction of the orofacial sensory pathways. It affects the inflammatory response via neuropeptide Y (NPY) and vascular endothelial growth factor (VEGF), which could potentially have a relevant role in the pathophysiology of diabetic neuropathy. The aim was to investigate expression of VEGF and NPY in subpopulations of trigeminal ganglion (TG) neurons in rat models of early DM1 and DM2...
November 3, 2016: Neuropeptides
https://www.readbyqxmd.com/read/27821816/tet-methylcytosine-dioxygenase-2-inhibits-atherosclerosis-via-upregulation-of-autophagy-in-apoe-mice
#11
Juan Peng, Qin Yang, A-Fang Li, Rong-Qing Li, Zuo Wang, Lu-Shan Liu, Zhong Ren, Xi-Long Zheng, Xiao-Qing Tang, Guo-Hua Li, Zhi-Han Tang, Zhi-Sheng Jiang, Dang-Heng Wei
Tet methylcytosine dioxygenase 2 (TET2) mediates the conversion of 5-methylcytosine (5mC) to 5-hydroxymethylcytosine (5hmC). The loss of TET2 is associated with advanced atherosclerotic lesions. Our previous study showed that TET2 improves endothelial cell function by enhancing endothelial cell autophagy. Accordingly, this study determined the role of TET2 in atherosclerosis and potential mechanisms. In ApoE-/- mice fed high-fat diet, TET2 overexpression markedly decreased atherosclerotic lesions with uniformly increased level of 5hmC and decreased level of 5mC in genomic DNA...
November 4, 2016: Oncotarget
https://www.readbyqxmd.com/read/27817148/cpap-therapy-for-patients-with-sleep-apnea-and-type-2-diabetes-mellitus-improves-control-of-blood-pressure
#12
Jamie Chung Mei Lam, Agnes Yuen Kwan Lai, Terence Chi Chun Tam, Michele Mae Ann Yuen, Karen Siu Ling Lam, Mary Sau Man Ip
PURPOSE: Obstructive sleep apnea (OSA) is highly associated with type 2 diabetes mellitus (DM), and treatment of OSA may have a positive impact on cardiometabolic profile. This study investigates the effects of continuous positive airway pressure (CPAP) treatment on glycemic control and cardiometabolic parameters in patients with diabetes. METHODS: Diabetic patients, who were newly diagnosed of OSA with an apnea hypopnea index (AHI) ≥15 and HbA1c ≥7%, were randomly assigned to either CPAP treatment or no treatment (control) for 3 months...
November 5, 2016: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/27800483/tocotrienol-rich-tocomin-attenuates-oxidative-stress-and-improves-endothelium-dependent-relaxation-in-aortae-from-rats-fed-a-high-fat-western-diet
#13
Saher F Ali, Jason C D Nguyen, Trisha A Jenkins, Owen L Woodman
We have previously reported that tocomin, a mixture high in tocotrienol content and also containing tocopherol, acutely preserves endothelial function in the presence of oxidative stress. In this study, we investigated whether tocomin treatment would preserve endothelial function in aortae isolated from rats fed a high-fat diet known to cause oxidative stress. Wistar hooded rats were fed a western diet (WD, 21% fat) or control rat chow (standard diet, 6% fat) for 12 weeks. Tocomin (40 mg/kg/day sc) or its vehicle (peanut oil) was administered for the last 4 weeks of the feeding regime...
2016: Frontiers in Cardiovascular Medicine
https://www.readbyqxmd.com/read/27767971/inflammation-induced-microvascular-dysfunction-in-obesity-a-translational-approach
#14
Maria das Graças Coelho de Souza, Luiz Guilherme Kraemer-Aguiar, Eliete Bouskela
Obesity is a crescent epidemic in the world, affecting more than half a billion of adults worldwide. Obesity is associated to main cardiovascular risk factors, such as insulin resistance, type 2 diabetes mellitus, high blood pressure and dyslipidemia. The excessive adiposity causes a dysregulation of adipokines secretion by adipose tissue, upregulating the expression of pro-inflammatory adipokines and downregulating the anti-inflammatory ones. This scenario contributes for the appearance of atherosclerosis...
October 18, 2016: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/27757983/poly-adp-ribose-polymerase1-deficiency-increases-nitric-oxide-production-and-attenuates-aortic-atherogenesis-through-downregulation-of-arginase-ii
#15
Shu-Jian Wei, Lin Cheng, Er-Shun Liang, Qi Wang, Sheng-Nan Zhou, Hao Xu, Long-Hua Hui, Zhi-Ming Ge, Ming-Xiang Zhang
Poly (ADP-ribose) polymerase (PARP) plays an important role in endothelial dysfunction, leading to atherogenesis and vascular-related diseases. However, whether PARP regulates nitric oxide (NO), a key regulator of endothelial function, is unclear so far. We investigated whether inhibition of PARP-1, the most abundant PARP isoform, prevents atherogenesis by regulating NO production and tried to elucidate the possible mechanisms involved in this phenomenon. In apolipoprotein E-deficient (apoE(-/-) ) mice fed a high-cholesterol diet for 12 weeks, PARP-1 inhibition via treatment with 3,4-dihydro-54-(1-piperindinyl) butoxy-1(2H)-isoquinoline (DPQ) or PARP-1 gene knockoutreduced aortic atherosclerotic plaque areas (49% and 46%, respectively)...
October 18, 2016: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/27753997/ed-07-2-to-lift-walk-or-run-what-is-the-optimal-mode-of-exercise-to-reduce-hypertension-and-prevent-cardiovascular-disease
#16
Peter Kokkinos
A plethora of evidence exists supporting that structured aerobic exercise or activities that increase cardiorespiratory fitness (CRF) lower resting blood pressure (BP) in patients with hypertension (HTN). Relatively few studies have assessed the effects of anaerobic or resistance exercise on BP. Thus, its role in managing HTN is not defined. Also, possible risks related with exercise in hypertensive patients have not been adequately addressed.In addition to lowering BP, CRF attenuates the incidence of HTN. A substantial part of the age-related progression to HTN is not an inevitable outcome of aging as once thought, but a consequence of lifestyle characterized by high-fat/salt diets and physical inactivity...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27753870/poa-02-3-small-vessel-disease-and-hypertension-molecular-mechanisms-and-clinical-implications
#17
Rhian M Touyz
Pathophysiological mechanisms contributing to hypertension include injury to small arteries, characterised by endothelial dysfunction, vascular remodeling, fibrosis and inflammation, (so called hypertensive vascular phenotype). These changes are initially adaptive but in the long term become maladaptive leading to vascular damage and loss of function, particularly important in small resistance arteries, critically involved in the regulation of peripheral vascular resistance and consequently in blood pressure control...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27748921/protective-and-anti%C3%A2-angiopathy-effects-of-ginsenoside%C3%A2-re-against-diabetes-mellitus-via-the-activation-of-p38-mapk-erk1-2-and-jnk-signaling
#18
Yawei Shi, Xuesi Wan, Nan Shao, Runyi Ye, Ning Zhang, Yunjian Zhang
The present study aimed to determine the protective and anti-angiopathy effects of ginsenoside (GSS) on Wistar rats with diabetes mellitus (DM). Diabetic angiopathy occurs during the early stage of diabetes, and in type 1 DM (T1DM) and type 2 DM (T2DM). In the present study, early DM, T1DM and T2DM were induced by treatment with a high‑sucrose‑high‑fat diet, alloxan monohydrate or streptozocin, respectively. The levels of blood glucose, insulin, lipid metabolism markers [total cholesterol (TC), triglyceride (TG), high‑density lipoprotein (HDL) and lipoprotein(a) (Lp‑a)], and endothelial cell function markers [endothelin, nitric oxide, vascular endothelial growth factor (VEGF) and interleukin‑6 (IL‑6)] were determined following treatment with GSS...
October 11, 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27744526/functional-abolition-of-carotid-body-activity-restores-insulin-action-and-glucose-homeostasis-in-rats-key-roles-for-visceral-adipose-tissue-and-the-liver
#19
Joana F Sacramento, Maria J Ribeiro, Tiago Rodrigues, Elena Olea, Bernardete F Melo, Maria P Guarino, Rui Fonseca-Pinto, Cristiana R Ferreira, Joana Coelho, Ana Obeso, Raquel Seiça, Paulo Matafome, Sílvia V Conde
AIMS/HYPOTHESIS: We recently described that carotid body (CB) over-activation is involved in the aetiology of insulin resistance and arterial hypertension in animal models of the metabolic syndrome. Additionally, we have demonstrated that CB activity is increased in animal models of insulin resistance, and that carotid sinus nerve (CSN) resection prevents the development of insulin resistance and arterial hypertension induced by high-energy diets. Here, we tested whether the functional abolition of CB by CSN transection would reverse pre-established insulin resistance, dyslipidaemia, obesity, autonomic dysfunction and hypertension in animal models of the metabolic syndrome...
January 2017: Diabetologia
https://www.readbyqxmd.com/read/27743986/a-combined-supplementation-of-vitamin-b12-and-n-3-polyunsaturated-fatty-acids-across-two-generations-improves-nerve-growth-factor-and-vascular-endothelial-growth-factor-levels-in-the-rat-hippocampus
#20
Richa Rathod, Amrita Khaire, Anvita Kale, Sadhana Joshi
Vitamin B12 and n-3 polyunsaturated fatty acid (n-3 PUFA) are known to influence cognition. This study aims to examine if these nutrients affect the protein levels and gene expression of nerve growth factor (NGF) and vascular endothelial growth factor (VEGF) in the cortex and hippocampus in the second-generation offspring at 3 mo of age. Wistar rats were fed the following diets for two generations: Control (CON), vitamin B12 deficient (VBD), vitamin B12 deficient supplemented with n-3 PUFA (VBDO), vitamin B12 supplemented (VBS), vitamin B12 supplemented with n-3 PUFA (VBSO)...
December 17, 2016: Neuroscience
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