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https://www.readbyqxmd.com/read/28636786/exacta-the-complement-system-in-kidney-diseases
#1
S Reuter, R Mrowka
The complement system, a plasma component, was described upon its discovery to augment the opsonisation of bacteria by antibodies, 'complementing' said antibodies' antibacterial activity. In its first and foremost role, the complement cascade helps convert pathogen recognition into an effective host defence. Two recent publications in Acta Physiologica have highlighted the role of complement factors in immune cell function, namely monoamine transmitter release from immune cells during immune response and inflammation(1, 2) This article is protected by copyright...
June 21, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/28634836/test-retest-reproducibility-of-11-c-l-deprenyl-d2-binding-to-mao-b-in-the-human-brain
#2
Ryosuke Arakawa, Per Stenkrona, Akihiro Takano, Sangram Nag, Rafael S Maior, Christer Halldin
BACKGROUND: [(11)C]-L-deprenyl-D2 is a positron emission tomography (PET) radioligand for measurement of the monoamine oxidase B (MAO-B) activity in vivo brain. The estimation of the test-retest reproducibility is important for accurate interpretation of PET studies. RESULTS: We performed two [(11)C]-L-deprenyl-D2 scans for six healthy subjects and evaluated the test-retest variability of this radioligand. MAO-B binding was quantified by two tissue compartment model (2TCM) with three rate constants (K 1, k 2, k 3) using metabolite-corrected plasma radioactivity...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28634060/potent-inhibitions-of-monoamine-oxidase-a-and-b-by-acacetin-and-its-7-o-6-o-malonylglucoside-derivative-from-agastache-rugosa
#3
Hyun Woo Lee, Hyung Won Ryu, Seung Cheol Baek, Myung-Gyun Kang, Daeui Park, Hyoung-Yun Han, Ju Hyeon An, Sei-Ryang Oh, Hoon Kim
Five compounds were isolated from the leaves of Agastache rugosa and tested for monoamine oxidase (MAO) inhibitory activity. Acacetin, a flavonoid, potently inhibited recombinant human MAO-A and MAO-B (IC50=0.19 and 0.17μM, respectively), and reversibly and competitively inhibited MAO-A and MAO-B (Ki=0.045 and 0.037μM, respectively). Acacetin 7-O-(6-O-malonylglucoside) (AMG) was also found to effectively inhibit MAO-A and MAO-B (IC50=2.34 and 1.87μM, respectively), and to reversibly and competitively inhibit MAO-A and MAO-B (Ki=1...
June 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28631844/sonic-hedgehog-wnt-and-brain-derived-neurotrophic-factor-cell-signaling-pathway-crosstalk-potential-therapy-for-depression
#4
REVIEW
Mohd Tayyab, Mehdi H Shahi, Shirin Farheen, Mubeena P M Mariyath, Nabeela Khanam, Javier S Castresana, M Mobarak Hossain
There are various theories to explain the pathophysiology of depression and support its diagnosis and treatment. The roles of monoamines, brain-derived neurotrophic factor (BDNF), and Wnt signaling are well researched, but sonic hedgehog (Shh) signaling and its downstream transcription factor Gli1 are not well studied in depression. Shh signaling plays a fundamental role in embryonic development and adult hippocampal neurogenesis and also involved in the growth of cancer. In this article, we summarize the evidence for the Shh signaling pathway in depression and the potential crosstalk of Shh with Wnt and BDNF...
June 20, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28630292/tetrahydrobiopterin-regulates-monoamine-neurotransmitter-sulfonation
#5
Ian Cook, Ting Wang, Thomas S Leyh
Monoamine neurotransmitters are among the hundreds of signaling small molecules whose target interactions are switched "on" and "off" via transfer of the sulfuryl-moiety (-SO3) from PAPS (3'-phosphoadenosine 5'-phosphosulfate) to the hydroxyls and amines of their scaffolds. These transfer reactions are catalyzed by a small family of broad-specificity enzymes-the human cytosolic sulfotransferases (SULTs). The first structure of a SULT allosteric-binding site (that of SULT1A1) has recently come to light. The site is conserved among SULT1 family members and is promiscuous-it binds catechins, a naturally occurring family of flavanols...
June 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28629779/are-dopaminergic-genotypes-risk-factors-for-eating-behavior-and-obesity-in-adults
#6
Orcun Avsar, Aysegul Kuskucu, Seda Sancak, Ece Genc
Dopamine (DA) is the main modulator of the brain reward system and significantly regulates food intake. The idea that obesity is a neurobiological disease rather than a metabolic disorder, is the basis of the study. Changes in dopamine neurotransmission affect the brain reward system in a direct way. Furthermore, changes in the reward system influence the eating behavior in human. The enzymes monoamine oxidase A (MAOA) and catechol-O-methyltransferase (COMT) terminate the DA function by metabolizing it. In our study, the control group which included 214 individuals and 234 subjects with obesity were investigated for MAOA-u VNTR and COMT (rs4680) polymorphisms...
June 16, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28627776/the-comt-val-108-158-met-genetic-polymorphism-can-not-be-recommended-as-a-biomarker-of-prediction-of-venlafaxine-efficacy-in-patients-treated-in-psychiatric-settings
#7
Adela Taranu, Khalil El Asmar, Romain Colle, Florian Ferreri, Mircea Polosan, Denis David, Laurent Becquemont, Emmanuelle Corruble, Céline Verstuyft
The antidepressant venlafaxine is known to increase the turn-over of cerebral monoamines, which are catabolized by the cathecol-O-methyltransferase (COMT). The COMT (Val108/158Met, rs4680) genetic polymorphism affects the cerebral COMT activity. But whether this genetic polymorphism is associated with response to venlafaxine remains unclear. We assessed the impact of the COMT Val(108/158)Met, rs4680 genetic polymorphism on the efficacy of venlafaxine in depressed patients. This study was nested in the METADAP cohort, a real-world naturalistic treatment study in psychiatric settings...
June 19, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28627368/photoactivation-of-erk-creb-vmat2-pathway-attenuates-mpp-induced-neuronal-injury-in-a-cellular-model-of-parkinson-s-disease
#8
Xiaotong Gu, Lei Liu, Qi Shen, Da Xing
The vesicular monoamine transporter 2 (VMAT2) pumps dopamine from cytoplasm into synaptic vesicles for subsequent release, and the deficits of VMAT2 has been implicated in the dopaminergic neuronal cell loss which is considered as a typical pathological feature of Parkinson's disease (PD). Low-power laser irradiation (LPLI), a potent noninvasive physiotherapy approach, is capable of penetrating into nerve tissue to exert beneficial effects such as promoting nerve regeneration and ATP production. In the present study, we demonstrated that LPLI protects against MPP(+)-induced neurotoxicity via upregulation of VMAT2 in SH-SY5Y human dopaminergic neuroblastoma cells...
June 13, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28625517/reduced-tdp-43-expression-improves-neuronal-activities-in-a-drosophila-model-of-perry-syndrome
#9
Yuka Hosaka, Tsuyoshi Inoshita, Kahori Shiba-Fukushima, Changxu Cui, Taku Arano, Yuzuru Imai, Nobutaka Hattori
Parkinsonian Perry syndrome, involving mutations in the dynein motor component dynactin or p150(Glued), is characterized by TDP-43 pathology in affected brain regions, including the substantia nigra. However, the molecular relationship between p150(Glued) and TDP-43 is largely unknown. Here, we report that a reduction in TDP-43 protein levels alleviates the synaptic defects of neurons expressing the Perry mutant p150(G50R) in Drosophila. Dopaminergic expression of p150(G50R), which decreases dopamine release, disrupts motor ability and reduces the lifespan of Drosophila...
June 8, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28625201/a-perspective-on-the-editorial-by-ken-gillman-much-ado-about-nothing-monoamine-oxidase-inhibitors-drug-interactions-and-dietary-tyramine
#10
https://www.readbyqxmd.com/read/28624436/zonisamide-inhibits-monoamine-oxidase-and-enhances-motor-performance-and-social-activity
#11
Maiko T Uemura, Takeshi Asano, Rie Hikawa, Hodaka Yamakado, Ryosuke Takahashi
Zonisamide (ZNS) is an effective drug for not only motor symptoms but also non-motor symptoms in Parkinson's disease. However, the actions of ZNS as an anti-Parkinsonian drug are not well understood. To clarify the actions of ZNS in vivo, we administered ZNS to mice and examined the effects on neurotransmitter metabolism and behaviors, focusing on motor and non-motor symptoms. Administration of ZNS decreased dopamine (DA) turnover in various brain regions, including the striatum. In behavioral tests, ZNS enhanced locomotor activity and novelty seeking in the open field test, light-dark transition test, and the social interaction test...
June 14, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/28624415/aging-rather-than-aneuploidy-affects-monoamine-neurotransmitters-in-brain-regions-of-down-syndrome-mouse-models
#12
Alain D Dekker, Yannick Vermeiren, Christelle Albac, Eva Lana-Elola, Sheona Watson-Scales, Dorota Gibbins, Tony Aerts, Debby Van Dam, Elizabeth M C Fisher, Victor L J Tybulewicz, Marie-Claude Potier, Peter P De Deyn
Altered concentrations of monoamine neurotransmitters and metabolites have been repeatedly found in people with Down syndrome (DS, trisomy 21). Because of the limited availability of human post-mortem tissue, DS mouse models are of great interest to study these changes and the underlying neurobiological mechanisms. Although previous studies have shown the potential of Ts65Dn mice - the most widely used mouse model of DS - to model noradrenergic changes, a comprehensive monoaminergic characterization in multiple brain regions has not been performed so far...
June 14, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28623006/a-longevity-study-with-enhancer-substances-selegiline-bpap-detected-an-unknown-tumor-manifestation-suppressing-regulation-in-rat-brain
#13
J Knoll, K Baghy, S Eckhardt, P Ferdinandy, M Garami, L G Harsing, P Hauser, Z Mervai, T Pocza, Z Schaff, D Schuler, I Miklya
AIMS: First proof to show that (-)-deprenyl/selegiline (DEP), the first selective inhibitor of MAO-B, later identified as the first β-phenylethylamine (PEA)-derived synthetic catecholaminergic activity enhancer (CAE) substance and (2R)-1-(1-benzofuran-2-yl)-N-propylpentane-2-amine (BPAP), the tryptamine-derived presently known most potent, selective, synthetic enhancer substance, are specific markers of unknown enhancer-sensitive brain regulations. MAIN METHODS: Longevity study disclosing the operation of tumor-manifestation-suppressing (TMS) regulation in rat brain...
June 13, 2017: Life Sciences
https://www.readbyqxmd.com/read/28619473/cocaine-adulteration
#14
REVIEW
Oliver Kudlacek, Tina Hofmaier, Anton Luf, Felix P Mayer, Thomas Stockner, Constanze Nagy, Marion Holy, Michael Freissmuth, Rainer Schmid, Harald H Sitte
Cocaine is a naturally occurring and illicitly used psychostimulant drug, which exerts its activity at monoaminergic neurotransmitter transporters. These transporters mediate the reuptake of the monoamines dopamine, serotonin and norepinephrine and are blocked by cocaine. The increase of monoamines in the extracellular space is the phenomenon underlying the drug effects that cocaine users seek. Currently, it is one of the most important illicit drugs on the European market. However, this increase in monoamines is also the underlying cause for the development of addiction and a number of severe side effects...
June 12, 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/28617549/identification-of-genes-associated-with-lung-cancer-by-bioinformatics-analysis
#15
J Li, H Yu, Y-F Ma, M Zhao, J Tang
OBJECTIVE: This study was aimed to explore the underlying genes associated with lung cancer (LC) by bioinformatics analysis. DATA AND METHODS: Gene expression profile GSE2514 was downloaded from the Gene Expression Omnibus database. Twenty lung and nineteen para-carcinoma tissue samples were used to identify the differentially expressed genes (DEGs) by paired t-test. Pathway enrichment analysis of DEGs was performed, followed by the construction of protein-protein interaction (PPI) network...
May 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28617392/-panic-disorder-clinical-phenomena-and-treatment-options
#16
Yu P Sivolap
Panic disorder is a common mental disease with high psychiatric comorbidity. It is considered that a combination of genetic predisposition and a special psychic vulnerability plays a key role in the occurrence of panic disorder. Clinically proven efficacy in the treatment of panic disorder have benzodiazepines, tricyclic antidepressants, monoamine oxidase inhibitors, selective serotonin reuptake inhibitors and selective serotonin and norepinephrine reuptake inhibitors; antidepressants from other pharmaceutical groups are also used...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28614723/single-muscle-fiber-proteomics-reveals-fiber-type-specific-features-of-human-muscle-aging
#17
Marta Murgia, Luana Toniolo, Nagarjuna Nagaraj, Stefano Ciciliot, Vincenzo Vindigni, Stefano Schiaffino, Carlo Reggiani, Matthias Mann
Skeletal muscle is a key tissue in human aging, which affects different muscle fiber types unequally. We developed a highly sensitive single muscle fiber proteomics workflow to study human aging and show that the senescence of slow and fast muscle fibers is characterized by diverging metabolic and protein quality control adaptations. Whereas mitochondrial content declines with aging in both fiber types, glycolysis and glycogen metabolism are upregulated in slow but downregulated in fast muscle fibers. Aging mitochondria decrease expression of the redox enzyme monoamine oxidase A...
June 13, 2017: Cell Reports
https://www.readbyqxmd.com/read/28613369/-hypertension-en-orthostatic-hypotension-during-use-of-monoamine-oxidase-mao-inhibitors
#18
W T Zandee, J Alsma, T K Birkenhäger, A H VAN den Meiracker, M van Hoek, J Versmissen
Monoamine oxidase (mao) inhibitors are antidepressants with potentially severe side-effects. For this reason, the registration of this drug was suspended for some time when safer alternatives became available. However, mao inhibitors can be very effective in cases where depression has proved to be treatment resistant. Consequently, last year tranylcypromine was re-registered for use in the Netherlands. Since mao inhibitors have been used only sporadically in the Netherlands over the last few years, health professionals have only limited knowledge about the side-effects...
2017: Tijdschrift Voor Psychiatrie
https://www.readbyqxmd.com/read/28606822/genistein-a-dietary-soy-isoflavone-exerts-antidepressant-like-effects-in-mice-involvement-of-serotonergic-system
#19
Pei Hu, Li Ma, Yan-Gui Wang, Feng Ye, Chuang Wang, Wen-Hua Zhou, Xin Zhao
Genistein, a principal isoflavone property of soybeans, possesses multiple pharmacological activities such as neuroprotection. Recently, it was reported that genistein exerted antidepressant-like effects in animal models, but the mechanism of action remains ambiguous. The purpose of this study was to investigate the antidepressant-like effect of genistein in mice and explore the underlying mechanism(s), using two mouse models of depression, i.e. forced swim test (FST) and tail suspension test (TST). Chronic, but not acute (single dose), genistein treatment (5, 15 or 45 mg/kg, p...
June 9, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28606766/medicinal-species-as-mtdls-turnera-diffusa-willd-ex-schult-inhibits-cns-enzymes-and-delays-glutamate-excitotoxicity-in-sh-sy5y-cells-via-oxidative-damage
#20
João Bernardo, Federico Ferreres, Ángel Gil-Izquierdo, Patrícia Valentão, Paula B Andrade
One of the most promising approaches to confront the complexity of central nervous system disorders are new multi-target directed ligands (MTDLs). Five medicinal species (Cereus grandiflorus (L.) Mill., Hyssopus officinalis L., Acorus calamus L., Silybum marianum L. Gaertn. and Turnera diffusa Willd. Ex Schult), selected for their ethnopharmacological relevance, were object for in vitro screening. The aqueous extract of T. diffusa revealed the strongest neuroactive potential, inhibiting monoamine oxidase-A (IC50 = 129...
June 9, 2017: Food and Chemical Toxicology
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