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https://www.readbyqxmd.com/read/28804659/fatal-systemic-vasoconstriction-in-a-case-of-metastatic-small-intestinal-net
#1
Stenzel Jochen, Noe Sebastian, Holzapfel Konstantin, Erlmeier Franziska, Eyer Florian
An increased release of serotonin secreted by ileal NETs is thought to be the major factor causing the carcinoid syndrome. However, in acutely arising carcinoid crisis also other vasoactive factors may lead to hazardous fluctuations in blood pressure and bronchial constriction. In rare cases, systemic vasoconstriction can be observed, probably caused by catecholamines or similar acting substances. Here, we report a fatal case of fulminant systemic vasoconstriction possibly caused by catecholamines in a patient with metastasized ileal NET...
2017: Case Reports in Gastrointestinal Medicine
https://www.readbyqxmd.com/read/28802898/neurochemical-evidence-that-cocaine-and-amphetamine-regulated-transcript-cart-55-102-peptide-modulates-the-dopaminergic-reward-system-by-decreasing-the-dopamine-release-in-the-mouse-nucleus-accumbens
#2
Angelina Rakovska, Maria Baranyi, Katalin Windish, Polina Petkova-Kirova, Hristo Gagov, Reni Kalfin
CART (Cocaine- and Amphetamine-Regulated Transcript) peptide is a neurotransmitter naturally occurring in the CNS and found mostly in nucleus accumbens, ventrotegmental area, ventral pallidum, amygdalae and striatum, brain regions associated with drug addiction. In the nucleus accumbens, known for its significant role in motivation, pleasure, reward and reinforcement learning, CART peptide inhibits cocaine and amphetamine-induced dopamine-mediated increases in locomotor activity and behavior, suggesting a CART peptide interaction with the dopaminergic system...
August 9, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28801784/prior-repeated-stress-attenuates-cold-induced-immunomodulation-associated-with-browning-in-mesenteric-fat-of-rats
#3
P Vargovic, M Laukova, J Ukropec, G Manz, R Kvetnansky
Continuous exposure to cold leads to activation of adaptive thermogenesis in brown adipose tissue but also to induction of brown/beige cell phenotype in white adipose tissue. The aim of this work was to investigate whether prior exposure to immobilization (IMO) stress may affect immune response associated with adipocyte "browning" in mesenteric adipose tissue (mWAT). In the first experiment, Sprague-Dawley rats were exposed to acute (3 h) or prolonged (7 days) cold exposure (4 ± 1 °C). 7-day cold stimulated gene expression of uncoupling protein 1 and other "browning"-associated factors...
August 11, 2017: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/28800981/near-infrared-spectroscopy-in-adult-cardiac-surgery-patients-a-systematic-review-and-meta-analysis
#4
Matthew J Chan, Tricia Chung, Neil J Glassford, Rinaldo Bellomo
OBJECTIVES: To identify the normal baseline preoperative range of cerebral tissue oxygen saturation (SctO2) derived using near-infrared spectroscopy (NIRS) and the efficacy of perioperative interventions designed to modulate SctO2 in cardiac surgical patients. DESIGN: Systematic review and meta-analysis of relevant randomized controlled trials (RCTs) extracted from the Medline, Embase, and Cochrane Central Register of Controlled Trials databases. SETTING: Hospitals performing cardiac surgery...
August 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28800937/vortioxetine-a-new-alternative-for-the-treatment-of-major-depressive-disorder
#5
Estela Salagre, Iria Grande, Brisa Solé, Jose Sanchez-Moreno, Eduard Vieta
Major Depressive Disorder (MDD) is a serious psychiatric condition. Its treatment remains a challenge nowadays. Vortioxetine is a novel antidepressant with a unique profile, as it acts as a multimodal serotoninergic agent. Its efficacy in MDD has been established in many short- and long-term studies, with 7 positive, 4 negative and 1 failed randomized controlled trials. Moreover, its ability to modulate a wide range of neurotransmitters (serotonin, dopamine, norepinephrine, histamine, glutamate or GABA) confers vortioxetine pro-cognitive effects...
August 8, 2017: Revista de Psiquiatrí́a y Salud Mental
https://www.readbyqxmd.com/read/28799416/evaluating-the-effects-of-chronic-antihypertensives-on-vasopressor-dosing-in-septic-shock
#6
Joshua M DeMott, Gourang Patel, Ishaq Lat
BACKGROUND: In septic shock, chronic antihypertensive medications are held acutely. Vasopressors are often required to maintain blood pressure. The effect of chronic exposure to antihypertensive therapies on vasopressor dosing in septic shock is not known. OBJECTIVE: To determine the effects of chronic exposure to antihypertensive therapies, specifically β-blockers and angiotensin-converting enzyme (ACE) inhibitors, on cumulative vasopressor dosing in septic shock...
August 1, 2017: Annals of Pharmacotherapy
https://www.readbyqxmd.com/read/28797691/antidepressant-like-activity-of-venlafaxine-and-clonidine-in-mice-exposed-to-single-prolonged-stress-a-model-of-post-traumatic-stress-disorder-pharmacodynamic-and-molecular-docking-studies
#7
Natalia Malikowska, Łukasz Fijałkowski, Alicja Nowaczyk, Piotr Popik, Kinga Sałat
BACKGROUND: Post-traumatic stress disorder (PTSD) is a growing issue worldwide characterized by stress and anxiety in response to re-experiencing traumatic events which strongly impair patient's quality of life and social functions. Available antidepressant and anxiolytic drugs are not efficacious in the majority of treated individuals. This necessitates a significant medical demand to develop novel therapeutic strategies for PTSD. EXPERIMENTAL APPROACH: Animal model of PTSD was induced using a mouse single prolonged stress protocol (mSPS)...
August 7, 2017: Brain Research
https://www.readbyqxmd.com/read/28797665/functionalized-polymer-monoliths-with-carbamylated-amylose-for-the-enantioselective-reversed-phase-nano-liquid-chromatographic-separation-of-a-set-of-racemic-pharmaceuticals
#8
Ali Fouad, Adel A Marzouk, Samy M Ibrahim, Sobhy M El-Adl, Ashraf Ghanem
Here we report the first encapsulation of three carbamylated amylose namely R-, S- and R/S-amylose 2,3(3,5-dimethylphenylcarbamate)-6-ethylphenylcarbamate in organic polymer monolith in situ capillary columns. The columns were investigated for the enantioselective nano-liquid chromatographic separation of a set of racemic pharmaceuticals, namely, α- and β-blockers, anti-inflammatory drugs, antifungal drugs, norepinephrine-dopamine reuptake inhibitors, catecholamines, sedative hypnotics, antihistaminics, anticancer drugs, and antiarrhythmic drugs...
July 23, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28796814/hyperoxia-does-not-directly-affect-vascular-tone-in-isolated-arteries-from-mice
#9
B Smit, Y M Smulders, M C de Waard, H M Oudemans-van Straaten, A R J Girbes, E C Eringa, A M E Spoelstra-de Man
Hospitalized patients often receive oxygen supplementation, which can lead to a supraphysiological oxygen tension (hyperoxia). Hyperoxia can have hemodynamic effects, including an increase in systemic vascular resistance. This increase suggests hyperoxia-induced vasoconstriction, yet reported direct effects of hyperoxia on vessel tone have been inconsistent. Furthermore, hyperoxia-induced changes in vessel diameter have not been studied in mice, currently the most used mammal model of disease. In this study we set out to develop a pressure-myograph model using isolated vessels from mice for investigation of pathways involved in hyperoxic vasoconstriction...
2017: PloS One
https://www.readbyqxmd.com/read/28796019/incidence-of-serotonin-syndrome-with-combined-use-of-linezolid-and-serotonin-reuptake-inhibitors-compared-with-linezolid-monotherapy
#10
Diana C Karkow, Jill F Kauer, Erika J Ernst
PURPOSE: Linezolid is a monoamine oxidase inhibitor that may increase the risk of serotonin syndrome in patients receiving combination selective serotonin reuptake inhibitors (SSRIs) or serotonin norepinephrine reuptake inhibitors (SNRIs). The objective of this study was to compare the incidence of serotonin syndrome when linezolid was administered alone and in combination with SSRIs or SNRIs. METHODS: This was a retrospective case-control study of adult inpatients admitted to the University of Iowa Hospitals and Clinics who received linezolid between January 2010 and December 2014...
August 8, 2017: Journal of Clinical Psychopharmacology
https://www.readbyqxmd.com/read/28795305/microrna-133a-attenuates-cardiomyocyte-hypertrophy-by-targeting-pkc%C3%AE-and-gq
#11
Se-Yeon Lee, Chang Youn Lee, Onju Ham, Jae Yoon Moon, Jiyun Lee, Hyang-Hee Seo, Sunhye Shin, Sang Woo Kim, Seahyoung Lee, Soyeon Lim, Ki-Chul Hwang
During the past decade, microRNAs have continuously been suggested as a promising therapeutic tool due to their beneficial effects, such as their multi-targets and multi-functions in pathologic conditions. As a pathologic phenotype is generally regulated by multiple signaling pathways, in this study we identified a microRNA regulating multiple target genes within cardiac hypertrophic signaling pathways. microRNA-133a is known to play a crucial role in cardiac hypertrophy. However, the role of microRNA-133a, which may regulate several signaling pathways in norepinephrine-induced cardiac hypertrophy via multi-targeting, has not been investigated...
August 9, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28794139/denervated-myocardium-is-preferentially-associated-with-sudden-cardiac-arrest-in-ischemic-cardiomyopathy-a-pilot-competing-risks-analysis-of-cause-specific-mortality
#12
James A Fallavollita, Jonathan D Dare, Randolph L Carter, Sunil Baldwa, John M Canty
BACKGROUND: Previous studies have identified multiple risk factors that are associated with total cardiac mortality. Nevertheless, identifying specific factors that distinguish patients at risk of arrhythmic death versus heart failure could better target patients likely to benefit from implantable cardiac defibrillators, which have no impact on nonsudden cardiac death. METHODS AND RESULTS: We performed a pilot competing risks analysis of the National Institutes of Health-sponsored PAREPET trial (Prediction of Arrhythmic Events with Positron Emission Tomography)...
August 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28790188/noradrenergic-activation-of-the-basolateral-amygdala-maintains-hippocampus-dependent-accuracy-of-remote-memory
#13
Erika Atucha, Vanja Vukojevic, Raquel V Fornari, Giacomo Ronzoni, Philippe Demougin, Fabian Peter, Piray Atsak, Marcel W Coolen, Andreas Papassotiropoulos, James L McGaugh, Dominique J-F de Quervain, Benno Roozendaal
Emotional enhancement of memory by noradrenergic mechanisms is well-described, but the long-term consequences of such enhancement are poorly understood. Over time, memory traces are thought to undergo a neural reorganization, that is, a systems consolidation, during which they are, at least partly, transferred from the hippocampus to neocortical networks. This transfer is accompanied by a decrease in episodic detailedness. Here we investigated whether norepinephrine (NE) administration into the basolateral amygdala after training on an inhibitory avoidance discrimination task, comprising two distinct training contexts, alters systems consolidation dynamics to maintain episodic-like accuracy and hippocampus dependency of remote memory...
August 8, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28783934/predictors-of-a-shorter-time-to-hospitalization-in-patients-with-bipolar-disorder-medication-during-the-acute-and-maintenance-phases-and-other-clinical-factors
#14
In Hee Shim, Young Sup Woo, Hee-Ryung Wang, Won-Myong Bahk
Objective: The present study was conducted to compare the effects of pharmacological treatments during the acute and maintenance phases of mood episodes, sociodemographic, and clinical characteristics between a shorter time to hospitalization group (<12 months) and a longer time to hospitalization group (≥12 months). Methods: The discharge medication for the first hospitalization was considered the acute treatment and the medication used during the week prior to the second hospitalization at the outpatient clinic was considered the maintenance treatment...
August 31, 2017: Clinical Psychopharmacology and Neuroscience: the Official Scientific Journal of the Korean College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28782534/variation-in-adrenal-and-thyroid-hormones-with-life-history-stage-in-juvenile-northern-elephant-seals-mirounga-angustirostris
#15
J A Jelincic, M S Tift, D S Houser, D E Crocker
The classical approach to quantifying the impact of stressors on wildlife is through characterization of hormones associated with the generalized stress response. However, interpretation of hormone data can be difficult due to the range of natural variation within a species and potential confounds of individual and life-history variables. Blood adrenal and thyroid hormones were measured in 144 chemically immobilized yearling northern elephant seals (Mirounga angustirostris) to characterize variation between sexes and across semiannual haul-outs...
August 3, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28781738/digital-necrosis-a-potential-risk-of-high-dose-norepinephrine
#16
Rafael Daroca-Pérez, Miguel F Carrascosa
No abstract text is available yet for this article.
August 2017: Therapeutic Advances in Drug Safety
https://www.readbyqxmd.com/read/28781164/imaging-sympathetic-neurogenic-ca-2-signaling-in-blood-vessels
#17
REVIEW
Withrow Gil Wier, Joseph R H Mauban
We review the information that has been provided by optical imaging experiments directed at understanding the role and effects of sympathetic nerve activity (SNA) in the functioning of blood vessels. Earlier studies utilized electric field stimulation of nerve terminals (EFS) in isolated arteries and vascular tissues (ex vivo) to elicit SNA, but more recently, imaging studies have been conducted in vivo, enabling the study of SNA in truly physiological conditions. Ex vivo: In vascular smooth muscle cells (VSMC) of isolated arteries, the three sympathetic neurotransmitters, norepinephrine (NE), ATP and neuropeptide Y (NPY), elicit or modulate distinct patterns of Ca(2+) signaling, as revealed by confocal imaging of exogenous fluorescent Ca(2+) indicators...
July 29, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28776368/selective-amperometric-recording-of-endogenous-ascorbate-secretion-from-a-single-rat-adrenal-chromaffin-cell-with-pretreated-carbon-fiber-microelectrodes
#18
Kai Wang, Tongfang Xiao, Qingwei Yue, Fei Wu, Ping Yu, Lanqun Mao
Quantitative description of ascorbate secretion at a single cell level is of great importance in physiological studies; however, most studies on the ascorbate secretion have so far been performed through analyzing cell extracts with high performance liquid chromatography, which lacks of time resolution and analytical performance on a single cell level. This study demonstrates a single cell amperometry with carbon fiber microelectrodes (CFEs) to selectively amperometric monitoring vesicular secretion of endogenous ascorbate from a single rat adrenal chromaffin cell...
August 4, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28774856/modafinil-improves-attentional-performance-in-healthy-non-sleep-deprived-humans-at-doses-not-inducing-hyperarousal-across-species
#19
Zackary A Cope, Arpi Minassian, Dustin Kreitner, David A MacQueen, Morgane Milienne-Petiot, Mark A Geyer, William Perry, Jared W Young
The wake-promoting drug modafinil is frequently used off-label to improve cognition in psychiatric and academic populations alike. The domain-specific attentional benefits of modafinil have yet to be quantified objectively in healthy human volunteers using tasks validated for comparison across species. Further, given that modafinil is a low-affinity inhibitor for the dopamine and norepinephrine transporters (DAT/NET respectively) it is unclear if any effects are attributable to a non-specific increase in arousal, a feature of many catecholamine reuptake inhibitors (e...
August 1, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28774778/frontiers-in-endocrine-disruption-impacts-of-organotin-on-the-hypothalamus-pituitary-thyroid-axis
#20
REVIEW
Ana Paula Santos-Silva, Marcelle Novaes Andrade, Paula Pereira-Rodrigues, Francisca Diana Paiva-Melo, Paula Soares, Jones Bernardes Graceli, Glaecir Roseni Mundstock Dias, Andrea Claudia Freitas Ferreira, Denise Pires de Carvalho, Leandro Miranda-Alves
Endocrine disruptors (EDs), chemical substances widely used in industry and ubiquitously distributed in the environment, are able to interfere with the synthesis, release, transport, metabolism, receptor binding, action, or elimination of endogenous hormones. EDs affect homeostasis mainly by acting on nuclear and nonnuclear steroid receptors but also on serotonin, dopamine, norepinephrine and orphan receptors in addition to thyroid hormone receptors. Tributyltin (TBT), an ED widely used as a pesticide and biocide in antifouling paints, has well-documented actions that include inhibiting aromatase and affecting the nuclear receptors PPARγ and RXR...
July 31, 2017: Molecular and Cellular Endocrinology
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