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Nitric oxide AND supplement

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https://www.readbyqxmd.com/read/29042678/carnosine-scavenging-of-glucolipotoxic-free-radicals-enhances-insulin-secretion-and-glucose-uptake
#1
Michael J Cripps, Katie Hanna, Charlie Lavilla, Sophie R Sayers, Paul W Caton, Craig Sims, Luigi De Girolamo, Craig Sale, Mark D Turner
The worldwide prevalence of diabetes has risen to 8.5% among adults, which represents a staggering rise in prevalence from 4.7% in 1980. Whilst some treatments work by increasing insulin secretion, over time their effectiveness decreases. We aim to increase insulin secretion by developing strategies that work through mechanisms independent of current treatment options. Isolated CD1 mouse islets, INS-1 pancreatic β-cells, or C2C12 mouse myotubes were incubated in standard tissue culture media, or media supplemented with 28 mM glucose, 200 μM palmitic acid, and 200 μM oleic acid as a cellular model of diabetic glucolipotoxicity...
October 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29042272/effect-of-dietary-nitrate-on-respiratory-physiology-at-high-altitude-results-from-the-xtreme-alps-study
#2
Andrew Cumpstey, Philip J Hennis, Edward T Gilbert-Kawai, Bernadette O Fernandez, Matthieu Poudevigne, Alexandra Cobb, Paula Meale, Kay Mitchell, Helen Moyses, Helmut Pöhnl, Monty G Mythen, Michael P W Grocott, Martin Feelisch, Daniel S Martin
Nitric oxide (NO) production plays a central role in conferring tolerance to hypoxia. Tibetan highlanders, successful high-altitude dwellers for millennia, have higher circulating nitrate and exhaled NO (ENO) levels than native lowlanders. Since nitrate itself can reduce the oxygen cost of exercise in normoxia it may confer additional benefits at high altitude. Xtreme Alps was a double-blinded randomised placebo-controlled trial to investigate how dietary nitrate supplementation affects physiological responses to hypoxia in 28 healthy adult volunteers resident at 4559 m for 1 week; 14 receiving a beetroot-based high-nitrate supplement and 14 receiving a low-nitrate 'placebo' of matching appearance/taste...
October 14, 2017: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/29037378/l-citrulline-acts-as-potential-hypothermic-agent-to-afford-thermotolerance-in-chicks
#3
Vishwajit S Chowdhury, Guofeng Han, Mohammad A Bahry, Phuong V Tran, Phong H Do, Hui Yang, Mitsuhiro Furuse
Recently we demonstrated that L-citrulline (L-Cit) causes hypothermia in chicks. However, the question of how L-Cit mediates hypothermia remained elusive. Thus, the objective of this study was to examine some possible factors in the process of L-Cit-mediated hypothermia and to confirm whether L-Cit can also afford thermotolerance in young chicks. Chicks were subjected to oral administration of L-Cit along with intraperitoneal injection of a nitric oxide synthase (NOS) inhibitor, N(G)-nitro-l-arginine methyl ester HCl (L-NAME), to examine the involvement of NO in the process of hypothermia...
October 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/29030883/polyunsaturated-fatty-acids-influence-inflammatory-markers-in-a-cellular-model-for-canine-osteoarthritis
#4
N Adler, A Schoeniger, H Fuhrmann
Although it is well recognized that dietary supplementation with fish oil improves clinical symptoms in dogs suffering from osteoarthritis, the molecular basis for the dietary benefit is not yet completely resolved in dogs. This study was designed to further clarify how polyunsaturated fatty acids (PUFA) affect key factors of cartilage degeneration in a canine cell culture system mimicking osteoarthritis. Canine chondrocytes were incubated either without or with 10 μm of eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), arachidonic acid (AA) or 3...
October 13, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/29030392/hydrogen-sulfide-preserves-enos-function-by-inhibiting-pyk2-implications-for-cardiomyocyte-survival-and-cardioprotection
#5
Sofia-Iris Bibli, Csaba Szabo, Athanasia Chatzianastasiou, Bert Luck, Sven Zukunft, Ingrid Fleming, Andreas Papapetropoulos
Hydrogen sulfide (H2S) exhibits beneficial effects in the cardiovascular system, many of which depend on nitric oxide (NO). Proline-rich tyrosine kinase 2 (PYK2), a redox-sensitive tyrosine kinase, directly phosphorylates and inhibits eNOS. Herein, we investigated the ability of H2S to relieve PYK2-mediated eNOS inhibition and evaluated the importance of the H2S/PYK2/eNOS axis on cardiomyocyte injury in vitro and in vivo. Exposure of H9c2 cardiomyocytes to H2O2 or pharmacological inhibition of H2S production increased PYK2 (Y402) and eNOS (Y656) phosphorylation...
October 13, 2017: Molecular Pharmacology
https://www.readbyqxmd.com/read/29027056/curcumin-affords-neuroprotection-and-inhibits-%C3%AE-synuclein-aggregation-in-lipopolysaccharide-induced-parkinson-s-disease-model
#6
Neha Sharma, Bimla Nehru
Parkinson's disease (PD) pathology is characterized by the abnormal accumulation and aggregation of the pre-synaptic protein α-synuclein in the dopaminergic neurons as Lewy bodies (LBs). Curcumin, which plays a neuroprotective role in various animal models of PD, was found to directly modulate the aggregation of α-synuclein in in vitro as well as in in vivo studies. While curcumin has been shown to exhibit strong anti-oxidant and anti-inflammatory properties, there are a number of other possible mechanisms by which curcumin may alter α-synuclein aggregation which still remains obscure...
October 12, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/29024717/supplementation-of-american-ginseng-berry-extract-mitigated-cisplatin-evoked-nephrotoxicity-by-suppressing-ros-mediated-activation-of-mapk-and-nf-%C3%AE%C2%BAb-signaling-pathways
#7
Zhi-Na Ma, Zhi Liu, Zi Wang, Shen Ren, Shan Tang, Ying-Ping Wang, Sheng-Yuan Xiao, Chen Chen, Wei Li
Nephrotoxicity induced by cisplatin in 30% of all cisplatin treated patients seriously limits its clinical implication as a widely used anticancer agent, and may even cause patients to alter or give up cisplatin therapy. The purpose of this study is to test a protective effect of American ginseng berry extract (AGBE) on cisplatin-induced nephrotoxicity in mice. In this study, the histopathological changes and elevated levels of serum creatinine (CRE) and urea nitrogen (BUN) caused by cisplatin were significantly diminished by AGBE treatment...
October 10, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28993146/exercise-training-reverses-the-negative-effects-of-chronic-l-arginine-supplementation-on-insulin-sensitivity
#8
Rafael Barrera Salgueiro, Frederico Gerlinger-Romero, Lucas Guimarães-Ferreira, Thais de Castro Barbosa, Maria Tereza Nunes
L-Arginine has emerged as an important supplement for athletes and non-athletes in order to improve performance. Arginine has been extensively used as substrate for nitric oxide synthesis, leading to increased vasodilatation and hormonal secretion. However, the chronic consumption of arginine has been shown to impair insulin sensitivity. In the present study, we aimed to evaluate whether chronic arginine supplementation associated with exercise training would have a beneficial impact on insulin sensitivity...
October 6, 2017: Life Sciences
https://www.readbyqxmd.com/read/28987361/comparative-effect-of-horse-gram-and-black-gram-on-inflammatory-mediators-and-antioxidant-status
#9
Vrinda Rajagopal, Chithra K Pushpan, Helen Antony
A balanced diet is important for the overall wellbeing of an individual. Pulses are an important part of a nutritive diet. Pulses have been consumed for at least 10,000 years and are among the most extensively used foods in the world. They are a rich source of protein and fiber, as well as a significant source of vitamins and minerals, such as iron, zinc, and magnesium. The purpose of this study was to compare the effect of two pulses, horse gram and black gram, on inflammatory mediators and the antioxidant enzymes...
October 2017: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28987235/effects-of-l-arginine-supplementation-associated-with-continuous-or-interval-aerobic-training-on-chronic-heart-failure-rats
#10
Giovanna Tedesco Barcelos, Douglas Dalcin Rossato, Júlia Luiza Perini, Lucas Pereira Pinheiro, Carol Carvalho, Rodrigo Boemo Jaenisch, Cláudia Ramos Rhoden, Pedro Dal Lago, Ramiro Barcos Nunes
OBJECTIVE: Chronic heart failure (CHF) is related with exercise intolerance and impaired nitric oxide (NO) production, which can lead to several functional capacity alterations. Considering the possible superiority of aerobic interval training compared to continuous training and the capacity of l-arginine to restore the NO pathway, the aim of the present study was to investigate whether these treatments are beneficial to exercise capacity, muscle mass preservation and hemodynamic, inflammatory and oxidative stress parameters in CHF rats...
November 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28982342/in-vitro-effects-of-polyphenols-on-the-peripheral-immune-responses-in-nickel-sensitized-patients
#11
Thea Magrone, Paolo Romita, Pietro Verni, Rosaria Salvatore, Anna Spagnoletta, Manrico Magrone, Matteo Antonio Russo, Emilio Jirillo, Caterina Foti
BACKGROUND: Nickel (Ni) is a metal largely present in the environment and prolonged exposure to it may lead to multiple pathological conditions in human subjects. Among these, the most frequent is allergic contact dermatitis. METHODS: Peripheral blood mononuclear cells isolated from 25 patients with Ni-dependent contact dermatitis were evaluated in terms of cytokine release and nitric oxide (NO) production in the presence or absence of two doses (3 and 5 μg, respectively) of polyphenols...
October 3, 2017: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/28981338/heart-toxicity-related-to-herbs-and-dietary-supplements-online-table-of-case-reports-part-4-of-5
#12
Amy C Brown
BACKGROUND: The purpose of this review was to create an online research summary table of heart toxicity case reports related to dietary supplements (DS; includes herbs). METHODS: Documented PubMed case reports of DS appearing to contribute to heart-related problems were used to create a "Toxic Table" that summarized the research (1966 to April, 2016, and cross-referencing). Keywords included "herb," "dietary supplement," and cardiac terms. Case reports were excluded if they were herb combinations (some exceptions), Chinese herb mixtures, teas of mixed herb contents, mushrooms, poisonous plants, self-harm (e...
October 5, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/28981319/vitamin-d-supplementation-prevents-placental-ischemia-induced-endothelial-dysfunction-by-downregulating-placental-soluble-fms-like-tyrosine-kinase-1
#13
Su-Ling Ma, Xiao-Yu Tian, Ya-Qi Wang, Hui-Feng Zhang, Lei Zhang
Maternal vitamin D deficiency in pregnancy has been associated with an increased risk of preeclampsia. Vascular endothelial dysfunction is a major phenotype of pregnancies with preeclampsia, contributing to increased maternal hypertension and proteinuria. We sought to determine whether vitamin D supplementation would alleviate preeclampsia associated endothelial dysfunction and explore the underlying mechanism using the reduced uterine perfusion pressure (RUPP) rat model. RUPP operated rats were supplemented with 1,25(OH)2D (RUPP+VD) on day 1, 7, and 14 of pregnancy by subcutaneous injection...
October 5, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28971842/inorganic-nitrate-supplementation-attenuates-peripheral-chemoreflex-sensitivity-but-does-not-improve-cardiovagal-baroreflex-sensitivity-in-older-adults
#14
Joshua M Bock, Kenichi Ueda, Aaron C Schneider, William E Hughes, Jacqueline K Limberg, Nathan S Bryan, Darren P Casey
Aging is associated with increased peripheral chemoreceptor activity, reduced nitric oxide (NO) bioavailability, as well as attenuation of cardiovagal baroreflex sensitivity (BRS), collectively increasing the risk of cardiovascular disease. Evidence suggests NO may attenuate peripheral chemoreflex sensitivity and increase BRS. Exogenous inorganic nitrate increases NO bioavailability via the nitrate-nitrite-nitric oxide pathway. Our hypothesis was that inorganic nitrate supplementation would attenuate peripheral chemoreflex sensitivity and enhance spontaneous cardiovagal BRS in older adults...
September 29, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28951307/n-methyl-d-aspartate-receptor-mediated-effect-on-glucose-transporter-3-levels-of-high-glucose-exposed-sh-sy5y-dopaminergic-neurons
#15
Ayse Basak Engin, Evren Doruk Engin, Resul Karakus, Arzu Aral, Ozlem Gulbahar, Atilla Engin
High glucose and insulin lead to neuronal insulin resistance. Glucose transport into the neurons is achieved by regulatory induction of surface glucose transporter-3 (GLUT3) instead of the insulin. N-methyl-D aspartate (NMDA) receptor activity increases GLUT3 expression. This study explored whether an endogenous NMDA receptor antagonist, kynurenic acid (KynA) affects the neuronal cell viability at high glucose concentrations. SH-SY5Y neuroblastoma cells were exposed to 150-250 mg/dL glucose and 40 μU/mL insulin...
September 23, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28941934/effects-of-dietary-nitrate-supplementation-on-the-response-to-extremity-cooling-and-endothelial-function-in-individuals-with-cold-sensitivity-a-double-blind-placebo-controlled-crossover-randomised-control-trial
#16
Clare M Eglin, Joseph T Costello, Stephen J Bailey, Mark Gilchrist, Heather Massey, Anthony I Shepherd
Individuals with cold sensitivity have low peripheral skin blood flow and skin temperature possibly due to reduced nitric oxide (NO•) bioavailability. Beetroot has a high concentration of inorganic nitrate and may increase NO-mediated vasodilation. Using a placebo-controlled, double blind, randomised, crossover design, this study tested the hypotheses that acute beetroot supplementation would increase the rate of cutaneous rewarming following a local cold challenge and augment endothelium-dependent vasodilation in cold sensitive individuals...
September 20, 2017: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/28941690/does-l-glutamine-supplemented-diet-extenuate-no-mediated-damage-on-myenteric-plexus-of-walker-256-tumor-bearing-rats
#17
Geraldo Emílio Vicentini, Heber Amilcar Martins, Luciane Fracaro, Sara Raquel Garcia de Souza, Kassio Papi da Silva Zanoni, Thamara Nishida Xavier Silva, Fernanda Paschoal Blegniski, Flávia Alessandra Guarnier, Jacqueline Nelisis Zanoni
This study was designed to appraise the relationship between enteric neuropathy and oxidative stress in cancer cachexia under l-glutamine-supplemented diet. Total and nitrergic neuronal populations were investigated in jejunum and ileum in four experimental groups: control (C); control l-glutamine-supplemented diet (CG); Walker-256 tumor (TW); and Walker-256 tumor supplemented with l-glutamine (TWG). In addition, local oxidative stress, neuronal nitric oxide synthase (nNOS) enzyme and nitric oxide (NO) levels were evaluated...
November 2017: Food Research International
https://www.readbyqxmd.com/read/28940638/does-l-citrulline-supplementation-improve-exercise-blood-flow-in-older-adults
#18
Joaquin U Gonzales, Andrea Raymond, John Ashley, Youngdeok Kim
What is the central question of this study? Does short-term supplementation with l-citrulline in order to increase l-arginine improve exercise blood flow and peripheral dilatation responses to exercise in older adults? What is the main finding and its importance? l-Citrulline increased femoral blood flow by 11% and vascular conductance by 14% during lower-limb exercise in older men, whereas no changes were observed in older women. This modest improvement in bulk muscle blood flow in older men has implications for altering muscle metabolism that may result in enhanced exercise tolerance in older adults...
September 20, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28931589/oral-supplementation-of-glutamine-attenuates-the-progression-of-nonalcoholic-steatohepatitis-in-c57bl-6j-mice
#19
Cathrin Sellmann, Anja Baumann, Annette Brandt, Cheng Jun Jin, Anika Nier, Ina Bergheim
Background: Universally accepted therapeutic strategies for the treatment of nonalcoholic steatohepatitis (NASH) are still lacking. Studies suggest a preventive effect of oral Gln supplementation on the development of NASH; however, whether Gln also has therapeutic potential for pre-existing NASH has not yet been clarified.Objective: The aim of the present study was to determine whether Gln prevents the progression of diet-induced NASH in mice.Methods: For 8 wk, female C57BL/6J mice (6-8 wk old) were pair-fed a liquid Western-style diet [WSD, 25% of energy from fat, 50% wt:wt fructose, 0...
September 20, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28931353/blueberry-supplementation-attenuates-microglia-activation-and-increases-neuroplasticity-in-mice-consuming-a-high-fat-diet
#20
Amanda N Carey, Kelsea R Gildawie, Abigail Rovnak, Nopporn Thangthaeng, Derek R Fisher, Barbara Shukitt-Hale
OBJECTIVES: Consuming a high-fat diet (HFD) may result in behavioral deficits similar to those observed in aging animals. Blueberries may prevent and even reverse age-related alterations in neurochemistry and behavior. It was previously demonstrated that middle-aged mice fed HFD had impaired memory; however, supplementation of HFD with blueberry reduced these memory deficits. As a follow-up to that study, the brain tissue from HFD-fed mice with and without blueberry supplementation was assessed to determine the neuroprotective mechanism(s) by which blueberry allayed cognitive dysfunction associated with HFD...
September 21, 2017: Nutritional Neuroscience
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