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https://www.readbyqxmd.com/read/29454047/renal-perivascular-adipose-tissue-form-and-function
#1
Carolina Baraldi A Restini, Alex Ismail, Ramya K Kumar, Robert Burnett, Hannah Garver, Gregory D Fink, Stephanie W Watts
Renal sympathetic activity affects blood pressure in part by increasing renovascular resistance via release of norepinephrine (NE) from sympathetic nerves onto renal arteries. Here we test the idea that adipose tissue adjacent to renal blood vessels, i.e. renal perivascular adipose tissue (RPVAT), contains a pool of NE which can be released to alter renal vascular function. RPVAT was obtained from around the main renal artery/vein of the male Sprague Dawley rats. Thoracic aortic PVAT and mesenteric PVAT also were studied as brown-like and white fat comparators respectively...
February 14, 2018: Vascular Pharmacology
https://www.readbyqxmd.com/read/29453937/trajectory-classes-of-cannabis-use-and-heavy-drinking-among-rural-african-american-adolescents-multilevel-predictors-of-class-membership
#2
Allen W Barton, Gene H Brody, Tamika C B Zapolski, Trenette C Goings, Steven M Kogan, Michael Windle, Tianyi Yu
AIMS: To inform research on the etiology and prevention of substance use among rural African American youth by (a) identifying developmental trajectory classes of cannabis use and heavy drinking across adolescence and young adulthood, and (b) examining associations between trajectory class membership and multi-level assessments of risk factors. DESIGN: A prospective study spanning nine years with assessments of cannabis use and heavy drinking, the catecholamines epinephrine and norepinephrine, perceived stress, and psychosocial risk factors...
February 17, 2018: Addiction
https://www.readbyqxmd.com/read/29453804/probiotics-affect-one-carbon-metabolites-and-catecholamines-in-a-genetic-rat-model-of-depression
#3
Sandra Tillmann, Hussain M Awwad, Amanda R Eskelund, Giulia Treccani, Juergen Geisel, Gregers Wegener, Rima Obeid
SCOPE: Probiotics may influence one-carbon (C1) metabolism, neurotransmitters, liver function markers, or behavior. METHODS AND RESULTS: Male adult Flinders Sensitive Line rats (model of depression, FSL; n = 22) received Lactobacillus helveticus R0052 and Bifidobacterium longum R0175 (10 9 or 10 10 colony-forming units/d) or vehicle for 10 weeks. The controls, Flinders Resistant Line rats (FRL, n = 8), only received vehicle. C1-related metabolites were measured in plasma, urine, and different tissues...
February 17, 2018: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29452808/norepinephrine-exerts-an-inotropic-effect-during-the-early-phase-of-human-septic-shock
#4
O Hamzaoui, M Jozwiak, T Geffriaud, B Sztrymf, D Prat, F Jacobs, X Monnet, P Trouiller, C Richard, J L Teboul
BACKGROUND: We conducted this study to investigate whether norepinephrine increases cardiac contractility when administered during the early phase of septic shock. METHODS: We studied 38 patients with septic shock who had been resuscitated for <3 h and whose mean arterial pressure (MAP) remained <65 mm Hg. Echocardiographic variables were obtained before (T 0 ) and after either initiation or an increase in the dose of a norepinephrine infusion to increase MAP to ≥ 65 mm Hg (T 1 )...
March 2018: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29452794/norepinephrine-improves-cardiac-function-during-septic-shock-but-why
#5
EDITORIAL
D De Backer, M Pinsky
No abstract text is available yet for this article.
March 2018: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29451703/mechanisms-of-imidazoline-i-2-receptor-agonist-induced-antinociception-in-rats-involvement-of-monoaminergic-neurotransmission
#6
Justin N Siemian, Kaixuan Wang, Yanan Zhang, Jun-Xu Li
BACKGROUND AND PURPOSE: Although studies have established the antinociceptive efficacies of imidazoline I 2 receptor (I 2 R) agonists, its exact post-receptor mechanism remains unknown. This study tested the hypothesis that monoaminergic transmission is critical for I 2 R agonist-induced antinociception. EXPERIMENTAL APPROACH: The von Frey filament test was used to examine the antinociceptive effects of the I 2 R agonists 2-BFI and CR4056 on chronic constriction injury (CCI)-induced neuropathic pain or complete Freund's adjuvant (CFA)-induced inflammatory pain in rats...
February 16, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29451362/simultaneous-multiple-ms-binding-assays-for-the-dopamine-norepinephrine-and-serotonin-transporters
#7
Patrick Neiens, Angela De Simone, Georg Höfner, Klaus T Wanner
In this work, we present label-free, mass-spectrometry-based binding assays (MS Binding Assays), targeting the human dopamine, norepinephrine, and serotonin transporters (hDAT, hNET, and hSERT) in simultaneous binding experiments. Using a validated LC-ESI-MS/MS method for quantification of the selective dopamine transporter inhibitor (R,R)-4-(2-benzhydryloxyethyl)-1-(4-fluorobenzyl)piperidin-3-ol ((R,R)-D-84), the selective norepinephrine transporter inhibitor (S,S)-reboxetine, and the selective serotonin reuptake inhibitor (S)-citalopram, binding affinities at the three monoamine transporters could be characterized simultaneously in a single binding experiment...
February 16, 2018: ChemMedChem
https://www.readbyqxmd.com/read/29451001/parallel-artificial-liquid-membrane-extraction-of-psychoactive-analytes-a-novel-approach-in-therapeutic-drug-monitoring
#8
Katharina Norgren Olsen, Kristine Skoglund Ask, Stig Pedersen-Bjergaard, Astrid Gjelstad
AIM: Liquid-liquid extraction is widely used in therapeutic drug monitoring of antipsychotics, but difficulties in automation of the technique can result in long operational time. In this paper, parallel artificial liquid membrane extraction was used for extraction of serotonin- and serotonin-norepinephrine reuptake inhibitors from human plasma, and an approach to automate the technique was investigated. RESULTS: Eight model analytes were extracted from 125 μl human plasma with recoveries in the range 72-111% (relative standard deviation [RSD] ≤12...
February 16, 2018: Bioanalysis
https://www.readbyqxmd.com/read/29450650/access-to-the-cns-biomarker-strategies-for-dopaminergic-treatments
#9
REVIEW
Willem Johan van den Brink, Semra Palic, Isabelle Köhler, Elizabeth Cunera Maria de Lange
Despite substantial research carried out over the last decades, it remains difficult to understand the wide range of pharmacological effects of dopaminergic agents. The dopaminergic system is involved in several neurological disorders, such as Parkinson's disease and schizophrenia. This complex system features multiple pathways implicated in emotion and cognition, psychomotor functions and endocrine control through activation of G protein-coupled dopamine receptors. This review focuses on the system-wide effects of dopaminergic agents on the multiple biochemical and endocrine pathways, in particular the biomarkers (i...
February 15, 2018: Pharmaceutical Research
https://www.readbyqxmd.com/read/29447836/sensory-denervation-of-inguinal-white-fat-modifies-sympathetic-outflow-to-white-and-brown-fat-in-siberian-hamsters
#10
REVIEW
Ngoc Ly T Nguyen, Bingzhong Xue, Timothy J Bartness
White adipose tissue (WAT) and brown adipose tissue (BAT) have sympathetic nervous system (SNS) and sensory innervations. Previous studies from our laboratory revealed central neuroanatomical evidence of WAT sensory and BAT SNS crosstalk with double labeling of inguinal WAT (IWAT) sensory and interscapular BAT (IBAT) SNS neurons. We previously demonstrated that WAT lipolysis increases IBAT temperature, but this effect is absent when IWAT afferents are surgically denervated, which severs both sensory and SNS nerves...
February 12, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29446730/salvaging-the-ischemic-heart-gi-coupled-receptors-in-mast-cells-activate-a-pkc%C3%AF-aldh2-pathway-providing-anti-ras-cardioprotection
#11
Alice Marino, Roberto Levi
BACKGROUND: Excessive norepinephrine (NE) release in the ischemic heart elicits severe and often lethal arrhythmias. Resident cardiac mast cells synthesize and store active renin, which is released upon degranulation, causing the activation of a local cardiac renin-angiotensin system (RAS) responsible for NE release and consequent arrhythmias. Toxic aldehydes, known to be formed by lipid peroxidation in ischemia/reperfusion (I/R), have been shown to degranulate mast cells and activate a local RAS...
February 13, 2018: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29446123/associations-between-csf-cortisol-and-csf-norepinephrine-in-cognitively-normal-controls-and-patients-with-amnestic-mci-and-ad-dementia
#12
Lucy Y Wang, Murray A Raskind, Charles W Wilkinson, Jane B Shofer, Carl Sikkema, Patricia Szot, Joseph F Quinn, Douglas R Galasko, Elaine R Peskind
OBJECTIVE: This study evaluated the effects of Alzheimer disease (AD) on the relationship between the brain noradrenergic system and hypothalamic pituitary adrenocortical axis (HPA). Specifically, relationships between cerebrospinal fluid (CSF) norepinephrine (NE) and CSF cortisol were examined in cognitively normal participants and participants with AD dementia and amnestic mild cognitive impairment (aMCI). We hypothesized that there would a positive association between these 2 measures in cognitively normal controls and that this association would be altered in AD...
February 15, 2018: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/29445765/-in-vivo-observation-of-structural-changes-in-neocortical-catecholaminergic-projections-in-response-to-drugs-of-abuse
#13
Mai M Morimoto, Shinji Tanaka, Shunsuke Mizutani, Shinji Urata, Kazuto Kobayashi, Shigeo Okabe
Catecholaminergic (dopamine and norepinephrine) projections to the cortex play an important role in cognitive functions and dysfunctions including learning, addiction, and mental disorders. While dynamics of glutamatergic synapses have been well studied in such contexts, little is known regarding catecholaminergic projections, owing to lack of robust methods. Here we report a system to monitor catecholaminergic projections in vivo over the timeframes that such events occur. Green fluorescent protein (GFP) expression driven by tyrosine hydroxylase promoter in a transgenic mouse line enabled us to perform two-photon imaging of cortical catecholaminergic projections through a cranial window...
January 2018: ENeuro
https://www.readbyqxmd.com/read/29445240/high-fat-diet-induced-metabolically-obese-and-normal-weight-rabbit-model-shows-early-vascular-dysfunction-mechanisms-involved
#14
Gabriela Alarcon, Julieta Roco, Mirta Medina, Analia Medina, Maria Peral, Susana Jerez
BACKGROUND: Obesity contributes significantly to the development and evolution of cardiovascular disease (CVD) which is believed to be mediated by oxidative stress, inflammation and endothelial dysfunction. However, the vascular health of metabolically obese and normal weight (MONW) individuals is not completely comprehended. OBJECTIVES: The purpose of our study was to evaluate vascular function on the basis of a high fat diet (HFD)-MONW rabbit model. SUBJECTS: Twenty four male rabbits were randomly assigned to receive either a regular diet (CD, n = 12) or a high-fat diet (18% extra fat on the regular diet, HFD, n = 12) for 6 weeks...
January 30, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29441984/direct-oral-anticoagulants-in-real-clinical-practice-analysis-of-patient-characteristics-and-prescribing-patterns-in-a-large-teaching-hospital
#15
B Kováčová, J Červeňová
Direct oral anticoagulants (DOACs) became rapidly accepted as an alternative to warfarin in the prevention of stroke in atrial fibrillation and prophylaxis of thromboembolic events. Their safety and efficacy have been well documented in several studies, however, as with any new drug, use in real-world population often reveals risk factors that may affect treatment outcomes. The aim of the study was to determine the prescribing patterns and analyse patient characteristics to identify incidence of selected factors (age, weight, comorbidities and interacting medication) that may affect DOAC safety and efficacy...
September 1, 2017: Die Pharmazie
https://www.readbyqxmd.com/read/29440699/vascular-dysfunction-in-obese-diabetic-db-db-mice-involves-the-interplay-between-aldosterone-mineralocorticoid-receptor-and-rho-kinase-signaling
#16
Aurelie Nguyen Dinh Cat, Glaucia E Callera, Malou Friederich-Persson, Ana Sanchez, Maria Gabriela Dulak-Lis, Sofia Tsiropoulou, Augusto C Montezano, Ying He, Ana M Briones, Frederic Jaisser, Rhian M Touyz
Activation of aldosterone/mineralocorticoid receptors (MR) has been implicated in vascular dysfunction of diabetes. Underlying mechanisms are elusive. Therefore, we investigated the role of Rho kinase (ROCK) in aldosterone/MR signaling and vascular dysfunction in a model of diabetes. Diabetic obese mice (db/db) and control counterparts (db/+) were treated with MR antagonist (MRA, potassium canrenoate, 30 mg/kg/day, 4 weeks) or ROCK inhibitor, fasudil (30 mg/kg/day, 3 weeks). Plasma aldosterone was increased in db/db versus db/+...
February 13, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29438841/anti-migraine-and-anti-depression-activities-of-tianshu-capsule-by-mediating-monoamine-oxidase
#17
Xiaoping Sun, Fangfang Zhu, Jun Zhou, Xiujuan Chang, Liang Li, Hanfei Hu, Zhenzhong Wang, Wei Xiao
BACKGROUND: Tianshu capsule(TSC)is a Chinese patent medicine. It's widely used to treat migraine clinically in China. AIM OF THE STUDY: In the present study, we investigated anti-migraine and anti-depression activities of TSC using in vivo animal models together with in vitro studies to investigate the mechanism of action. MATERIALS AND METHODS: Nitroglycerin (NTG) -induced migraine rat model, rat was given a subcutaneous injection of the NTG suspension (10 mg/kg) once a week for 5 weeks...
February 10, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29438568/haemodynamic-assessment-and-support-in-sepsis-and-septic-shock-in-resource-limited-settings
#18
David Misango, Rajyabardhan Pattnaik, Tim Baker, Martin W Dünser, Arjen M Dondorp, Marcus J Schultz
Background: Recommendations for haemodynamic assessment and support in sepsis and septic shock in resource-limited settings are largely lacking. Methods: A task force of six international experts in critical care medicine, all of them members of the Global Intensive Care Working Group of the European Society of Intensive Care Medicine and with extensive bedside experience in resource-limited intensive care units, reviewed the literature and provided recommendations regarding haemodynamic assessment and support, keeping aspects of efficacy and effectiveness, availability and feasibility and affordability and safety in mind...
February 9, 2018: Transactions of the Royal Society of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29437028/changes-in-the-peripheral-endocannabinoid-system-as-a-risk-factor-for-the-development-of-eating-disorders
#19
Anna Capasso, Walter Milano, Omar Cauli
BACKGROUND AND OBJECTIVE: Eating Disorder (ED) is characterized by persistently and severely disturbed eating behaviours. They arise from a combination of long-standing behavioural, emotional, psychological, interpersonal, and social factors and result in insufficient nutrient ingestion and/or adsorption. The three main EDs are: anorexia nervosa, bulimia nervosa, and binge eating disorder. We review the role of peripheral endocannabinoids in eating behaviour. DISCUSSION: The neuronal pathways involved in feeding behaviours are closely related to catecholaminergic, serotoninergic and peptidergic systems...
February 12, 2018: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/29435917/acupuncture-prevents-the-impairment-of-hippocampal-ltp-through-%C3%AE-1-ar-in-vascular-dementia-rats
#20
Ling-Yong Xiao, Xue-Rui Wang, Jing-Wen Yang, Yang Ye, Wen Zhu, Yan Cao, Si-Ming Ma, Cun-Zhi Liu
It is widely accepted that the synaptic dysfunction and synapse loss contribute to the cognitive deficits of vascular dementia (VD) patients. We have previously reported that acupuncture improved cognitive function in rats with VD. However, the mechanisms involved in acupuncture improving cognitive ability remain to be elucidated. The present study aims to investigate the pathways and molecules involved in the neuroprotective effect of acupuncture. We assessed the effects of acupuncture on hippocampal long-term potentiation (LTP), the most prominent cellular model of memory formation...
February 13, 2018: Molecular Neurobiology
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