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Glucose dopamine

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https://www.readbyqxmd.com/read/28636436/signal-on-fluorescent-sensor-based-on-n-cqds-for-the-detection-of-glutathione-in-human-serum-and-pharmaceutic-preparation
#1
Chengfei Zhao, Kangying Wang, Qihong Cai, Haijian Tu, Linghong Pan, Liumin Yu
Nitrogen-doped carbon quantum dots (N-CQDs) with citric acid and ethylenediamine as raw materials were synthesized by an efficient one-step strategy. The N-CQDs showed a special property that the fluorescence was quenched by Fe(3+). The quenched fluorescence of N-CQDs could be recovered by glutathione (GSH). Therefore, a "signal-on" fluorescent sensor was developed to detect GSH. The fluorescent sensor could favorably avoid the interference of ascorbic acid, dopamine, glucose, oxidized glutathione and other amino acids in the detecting process of GSH...
June 21, 2017: Preparative Biochemistry & Biotechnology
https://www.readbyqxmd.com/read/28621523/mussel-inspired-hyaluronic-acid-derivative-nanostructures-for-improved-tumor-targeting-and-penetration
#2
Song Yi Lee, Ju-Hwan Park, Seung-Hak Ko, Jae-Seong Shim, Dae-Duk Kim, Hyun-Jong Cho
An amphiphilic hyaluronic acid-ceramide-dopamine (HACE-d) conjugate was prepared and HACE-d-based nanoparticles (NPs) including phloretin (as an inhibitor of glucose transporter (GLUT1)) were fabricated. Mussel-inspired property of d was introduced to HACE NPs and it may improve tumor targetability and penetration in addition to passive (based on enhanced permeability and retention effect) and active (interaction between HA and CD44 receptor) tumor targeting effects. HACE-d/phloretin NPs with 279 nm mean diameter, ~0...
June 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28595536/neuroprotective-effects-of-drug-induced-therapeutic-hypothermia-in-central-nervous-system-diseases
#3
Junwei Ma, Yibin Wang, Zhong Wang, Haiying Li, Zhimin Wang, Gang Chen
Cerebrovascular diseases often cause neurological deficits. Experimental studies have shown that drug-induced hypothermia alleviates brain damage and plays a neuroprotective role, thereby reducing mortality and ameliorating neurological deficits. Therefore, drug-induced hypothermia has an important research value and is further considered in the clinical setting. However, drug-induced hypothermia is also associated with side effects, such as ventricular tachycardia, ventricular fibrillation, suppressed immune function, infection, electrolyte imbalance, glucose metabolism disorders, and skeletal muscle tremor...
June 6, 2017: Current Drug Targets
https://www.readbyqxmd.com/read/28588361/caffeine-and-cannabis-effects-on-vital-neurotransmitters-and-enzymes-in-the-brain-tissue-of-juvenile-experimental-rats
#4
J O Owolabi, S Y Olatunji, A J Olanrewaju
BACKGROUND: Caffeine and cannabis are globally consumed and abused psychoactive substances. While caffeine is legally used in various forms, including in tea and coffee as beverages, it is also consumed in soda and energy drinks as additives. Cannabis, on the other hand, is considered illegal in most countries; albeit, it is being consumed globally particularly by adolescents. PURPOSE: The adolescent stage marks a critical stage of brain development and maturation...
May 2017: Annals of Neurosciences
https://www.readbyqxmd.com/read/28580946/dopamine-d2-receptor-signaling-in-the-nucleus-accumbens-comprises-a-metabolic-cognitive-brain-interface-regulating-metabolic-components-of-glucose-reinforcement
#5
Michael Michaelides, Michael L Miller, Jennifer A DiNieri, Juan L Gomez, Elizabeth Schwartz, Gabor Egervari, Gene Jack Wang, Charles V Mobbs, Nora D Volkow, Yasmin L Hurd
Appetitive drive is influenced by coordinated interactions between brain circuits that regulate reinforcement and homeostatic signals that control metabolism. Glucose modulates striatal dopamine (DA), and regulates appetitive drive and reinforcement learning. Striatal DA D2 receptors (D2R) also regulate reinforcement learning, and are implicated in glucose-related metabolic disorders. Nevertheless, interactions between striatal D2R and peripheral glucose have not been previously described. Here we show that manipulations involving striatal D2R signaling coincide with perseverative and impulsive-like responding for sucrose, a disaccharide consisting of fructose and glucose...
June 5, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28575963/highly-sensitive-and-selective-non-enzymatic-electrochemical-glucose-sensors-based-on-graphene-oxide-molecular-imprinted-polymer
#6
Sheeba Alexander, P Baraneedharan, Shriya Balasubrahmanyan, S Ramaprabhu
Graphene Oxide-Molecular Imprinted Polymer (GO-MIP) based electrochemical sensor was developed for the first time towards enzyme less determination of glucose. This GO-MIP was obtained from a series of fictionalization, polymerization and template molecule introduction/removal during the synthesizing process. The proposed GO-MIP based electrode showed excellent electrocatalytic activity towards glucose oxidation at optimized conditions and possessing detection limit of 0.1nM with a response time of ~2min. The current response of GO-MIP based glucose sensor was linearly related to the concentration of glucose...
September 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28560263/dopamine-d2-receptors-and-the-circadian-clock-reciprocally-mediate-antipsychotic-drug-induced-metabolic-disturbances
#7
Zachary Freyberg, Michael J McCarthy
Antipsychotic drugs are widely prescribed medications, used for numerous psychiatric illnesses. However, antipsychotic drugs cause serious metabolic side effects that can lead to substantial weight gain and increased risk for type 2 diabetes. While individual drugs differ, all antipsychotic drugs may cause these important side effects to varying degrees. Given that the single unifying property shared by these medications is blockade of dopamine D2 and D3 receptors, these receptors likely play a role in antipsychotic drug-induced metabolic side effects...
2017: NPJ Schizophrenia
https://www.readbyqxmd.com/read/28539708/assessment-of-mexican-arnica-heterotheca-inuloides-cass-and-rosemary-rosmarinus-officinalis-extracts-on-dopamine-and-selected-biomarkers-of-oxidative-stress-in-stomach-and-brain-of-salmonella-typhimurium-infected-rats
#8
David Calderón Guzmàn, Maribel Ortiz Herrera, Norma Osnaya Brizuela, Gerardo Barragàn Mejía, Ernestina Hernàndez García, Hugo Juàrez Olguín, Armando Valenzuela Peraza, Norma Labra Ruíz, Daniel Santamaría Del Angel
BACKGROUND: The effects of some natural products on dopamine (DA) and 5-hydroxyindole acetic acid (5-HIAA) in brain of infected models are still unclear. OBJECTIVE: The purpose of this study was to measure the effect of Mexican arnica/rosemary (MAR) water extract and oseltamivir on both biogenic amines and some oxidative biomarkers in the brain and stomach of young rats under infection condition. METHODS: Female Wistar rats (weight 80 g) in the presence of MAR or absence (no-MAR) were treated as follows: group 1, buffer solution (controls); oseltamivir (100 mg/kg), group 2; culture of Salmonella typhimurium (S...
April 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28516289/understanding-the-stability-of-dopamine-and-dobutamine-over-24%C3%A2-h-in-simulated-neonatal-ward-conditions
#9
Katherine Kirupakaran, Liam Mahoney, Heike Rabe, Bhavik A Patel
OBJECTIVES: Our objectives were to investigate the possible effects of temperature and light on the stability of dopamine and dobutamine continuous infusions over 24 h when prepared in a variety of dilution vehicles. METHODS: Syringe-driver infusion apparatuses were set up for dopamine and dobutamine diluted with either 0.9% sodium chloride (NaCl) or 5% glucose delivering 3 and 5 μg/kg/min, respectively, via 206-cm extension sets. All infusions were prepared for a neonate weight of 1 kg...
May 17, 2017: Paediatric Drugs
https://www.readbyqxmd.com/read/28485313/clinical-characteristics-and-current-interventions-in-shock-patients-in-chinese-emergency-departments-a-multicenter-prospective-cohort-study
#10
Shu-Bin Guo, Yun-Xia Chen, Xue-Zhong Yu
BACKGROUND: Shock is a life-threatening condition in emergency departments (EDs) and is associated with a high mortality; however, its clinical characteristics and current interventions in China are seldom reported. This study investigated the clinical characteristics and current interventions of shock patients in Chinese EDs. METHODS: This multicenter prospective cohort study was conducted in the EDs of 33 academic hospitals in 16 Chinese provinces. Adult shock patients were enrolled from December 2013 to April 2014...
May 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28437058/psychotic-and-bipolar-disorders-antipsychotic-drugs
#11
REVIEW
Sarah D Holder, Alaina L Edmunds, Sherri Morgan
Antipsychotic drugs block dopamine receptors and are used to manage psychosis as well as other mental illnesses that may or may not have psychotic features, such as bipolar disorders and major depressive disorder. First-generation antipsychotic drugs are more likely to cause adverse effects such as extrapyramidal symptoms and tardive dyskinesia. Adverse effects of second-generation antipsychotic drugs typically are related to metabolic abnormalities such as weight gain, abnormal blood glucose levels, and elevated lipid levels...
April 2017: FP Essentials
https://www.readbyqxmd.com/read/28433974/hypoactive-hypoalert-behaviour-and-thalamic-hypometabolism-due-to-intracranial-hypotension
#12
Seamus Kearney, Peter Flynn, Simon Hughes, Wendy Spence, Mark Owen McCarron
A 47-year-old man presented with a 9-year history of a hypoalert hypoactive behaviour syndrome, caused by the deep brain swelling variant of spontaneous intracranial hypotension. Along with apathy with retained cognition, he had stable ataxia, impaired upgaze and episodes of central apnoea. MRI brain showed a sagging brainstem, pointed ventricles and reduced angle between the vein of Galen and the straight sinus, but no meningeal enhancement or subdural collections. A dopamine transporter scan showed preganglionic dopamine receptor deficiency; a fluorodeoxy glucose positron emission tomography scan showed bilateral hypothalamic hypometabolism...
April 22, 2017: Practical Neurology
https://www.readbyqxmd.com/read/28433467/modeling-hypohedonia-following-repeated-social-defeat-individual-vulnerability-and-dopaminergic-involvement
#13
Samantha R Spierling, Maegan Mattock, Eric P Zorrilla
Social defeat in rodents putatively can model hypohedonia. The present studies examined models for assessing hypohedonia-like behavior and tested the hypotheses that 1) individual differences in baseline reward sensitivity predict vulnerability, and 2) defeat elicits changes in pharmacological measures of striatal dopaminergic function. Male Wistar rats (n=142) received repeated defeat (3 "triad" blocks of 3 defeats) or control handling. To determine whether defeat influenced consumption of SuperSac (glucose-saccharin) over an isocaloric, less preferred, glucose solution, a 2-choice paradigm was used...
April 19, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28420085/electrochemical-detection-of-dopamine-using-3d-porous-graphene-oxide-gold-nanoparticle-composites
#14
Sung-Sik Choo, Ee-Seul Kang, Inbeom Song, Donghyun Lee, Jeong-Woo Choi, Tae-Hyung Kim
The detection of dopamine in a highly sensitive and selective manner is crucial for the early diagnosis of a number of neurological diseases/disorders. Here, a report on a new platform for the electrochemical detection of dopamine with a considerable accuracy that comprises a 3D porous graphene oxide (pGO)/gold nanoparticle (GNP)/pGO composite-modified indium tin oxide (ITO) is presented. The pGO was first synthesized and purified by ultrasonication and centrifugation, and it was then further functionalized on the surface of a GNP-immobilized ITO electrode...
April 14, 2017: Sensors
https://www.readbyqxmd.com/read/28404742/autonomic-nervous-system-activation-mediates-the-increase-in-whole-body-glucose-uptake-in-response-to-electroacupuncture
#15
Anna Benrick, Milana Kokosar, Min Hu, Martin Larsson, Manuel Maliqueo, Rodrigo Rodrigues Marcondes, Marzia Soligo, Virginia Protto, Elisabet Jerlhag, Antonina Sazonova, Carl Johan Behre, Kurt Højlund, Peter Thorén, Elisabet Stener-Victorin
A single bout of low-frequency electroacupuncture (EA) causing muscle contractions increases whole-body glucose uptake in insulin-resistant rats. We explored the underlying mechanism of this finding and whether it can be translated into clinical settings. Changes in glucose infusion rate (GIR) were measured by euglycemic-hyperinsulinemic clamp during and after 45 min of low-frequency EA in 21 overweight/obese women with polycystic ovary syndrome (PCOS) and 21 controls matched for age, weight, and body mass index (experiment 1) and in rats receiving autonomic receptor blockers (experiment 2)...
April 12, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28395162/evaluation-of-a-new-electrochemical-sensor-for-selective-detection-of-non-enzymatic-hydrogen-peroxide-based-on-hierarchical-nanostructures-of-zirconium-molybdate
#16
J Vinoth Kumar, R Karthik, Shen-Ming Chen, N Raja, V Selvam, V Muthuraj
The construction and characterization of selective and sensitive non-enzymatic hydrogen peroxide (H2O2) electrochemical sensor based on sphere-like zirconium molybdate (ZrMo2O8) nanostructure are reported for the first time. The sphere-like ZrMo2O8 were prepared via a simple hydrothermal route followed by annealing process. The structural and morphological properties were investigated by various analytical and spectroscopic techniques such as XRD, Raman, SEM, EDX, TEM, and XPS analysis. Furthermore, the electrochemical properties were investigated by cyclic voltammetry and amperometric techniques...
March 31, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28374645/effect-of-bromocriptine-qr-therapy-on-glycemic-control-in-subjects-with-type-2-diabetes-mellitus-whose-dysglycemia-is-inadequately-controlled-on-insulin
#17
RANDOMIZED CONTROLLED TRIAL
Bindu Chamarthi, Anthony H Cincotta
OBJECTIVE: The concurrent use of an insulin sensitizer in type 2 diabetes mellitus (T2DM) patients with inadequate glycemic control on basal-bolus insulin may help improve glycemic control while limiting further insulin requirement. Bromocriptine-QR (B-QR), a quick release, sympatholytic, dopamine D2 receptor agonist therapy for T2DM, is a postprandial insulin sensitizer. This study evaluated the effect of B-QR on dysglycemia in T2DM subjects with suboptimal glycemic control on basal-bolus insulin plus metformin...
May 2017: Postgraduate Medicine
https://www.readbyqxmd.com/read/28360997/imaging-biomarkers-in-parkinson-s-disease-and-parkinsonian-syndromes-current-and-emerging-concepts
#18
REVIEW
Usman Saeed, Jordana Compagnone, Richard I Aviv, Antonio P Strafella, Sandra E Black, Anthony E Lang, Mario Masellis
Two centuries ago in 1817, James Parkinson provided the first medical description of Parkinson's disease, later refined by Jean-Martin Charcot in the mid-to-late 19th century to include the atypical parkinsonian variants (also termed, Parkinson-plus syndromes). Today, Parkinson's disease represents the second most common neurodegenerative disorder with an estimated global prevalence of over 10 million. Conversely, atypical parkinsonian syndromes encompass a group of relatively heterogeneous disorders that may share some clinical features with Parkinson's disease, but are uncommon distinct clinicopathological diseases...
2017: Translational Neurodegeneration
https://www.readbyqxmd.com/read/28347724/metabolic-effects-of-intermittent-access-to-caloric-or-non-caloric-sweetened-solutions-in-mice-fed-a-high-caloric-diet
#19
Marion Soto, Catherine Chaumontet, Patrick C Even, Dalila Azzout-Marniche, Daniel Tomé, Gilles Fromentin
Human consumption of obesogenic diets and soft drinks, sweetened with different molecules, is increasing worldwide, and increases the risk of metabolic diseases. We hypothesized that the chronic consumption of caloric (sucrose, high-fructose corn syrup (HFCS), maltodextrin) and non-caloric (sucralose) solutions under 2-hour intermittent access, alongside the consumption of a high-fat high-sucrose diet, would result in differential obesity-associated metabolic abnormalities in mice. Male C57BL/6 mice had ad libitum access to an HFHS diet and to water (water control group)...
June 1, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28340766/flower-like-mos2-decorated-with-cu2o-nanoparticles-for-non-enzymatic-amperometric-sensing-of-glucose
#20
Linxia Fang, Fan Wang, Zhenghua Chen, Yan Qiu, Tianli Zhai, Mengmeng Hu, Cuijie Zhang, Kejing Huang
In this study, a novel nanohybrid consisting of flower-like MoS2 decorated with Cu2O nanoparticles has been successfully synthesized for non-enzymatic amperometric sensing of glucose. Structural characterizations revealed that Cu2O nanoparticles were highly dispersed on MoS2 nanosheets. Electrochemical performances were investigated by cyclic voltammetry (CV) and chronoamperometry. Compared to single Cu2O component, the-synthesized Cu2O/MoS2 nanohybrid showed superior electrocatalysis to the oxidation of glucose...
May 15, 2017: Talanta
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