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https://www.readbyqxmd.com/read/29161023/in-vivo-neurochemical-profile-of-selectively-bred-high-responder-and-low-responder-rats-reveals-baseline-cocaine-and-novelty-evoked-differences-in-monoaminergic-systems
#1
Omar S Mabrouk, John L Han, Jenny-Marie T Wong, Huda Akil, Robert T Kennedy, Shelly B Flagel
Relative to bred low-responder (bLR) rats, bred high-responder (bHR) rats have an exaggerated locomotor response to a novel environment, are more risk-taking, more impulsive, and more likely to exhibit compulsive drug-seeking behaviors. These phenotypic differences in addiction-related behaviors and temperament have previously been associated with differences in neurotransmitter signaling, including the mesolimbic dopamine system. In the current study, we applied advanced in vivo microdialysis sampling in the nucleus accumbens of bHRs/bLRs to assess differences in basal and stimulated neurochemical efflux more broadly...
November 21, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29158115/trace-elements-cause-oxidative-damage-in-the-brain-of-rats-with-induced-hypotension
#2
David Calderón Guzmán, Maribel Ortiz Herrera, Norma Osnaya Brizuela, Gerardo Barragán Mejía, Hugo Juárez Olguín, Armando Valenzuela Peraza
Hypertension causes neuronal damage and apoptosis in the brain. Diazoxide is a drug used in the treatment of hypertension however, its effect on 5-hydroxyindole acetic acid (5-HIAA) and dopamine amines in adult animal models remains unclear. The purpose of this study was to determine the effect of oligoelements on 5-HIAA and dopamine in the brain of adult rats treated with diazoxide METHODS: Male Fisher rats (weight 250g) were treated as follows: Group I, NaCl 0.9% (control); group II, tracefusin® (1.5mL/rat); group III, diazoxide (20mg/rat) and group IV, tracefusin® (1...
November 3, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/29156344/neurotransmitter-changes-in-rat-brain-regions-following-glyphosate-exposure
#3
María-Aránzazu Martínez, Irma Ares, José-Luis Rodríguez, Marta Martínez, María-Rosa Martínez-Larrañaga, Arturo Anadón
The effects of glyphosate oral exposure (35, 75, 150 and 800mg/kg bw, 6 days) on brain region monoamine levels of male Wistar rats were examined. Glyphosate-treated rats (35, 75, 150 and 800mg/kg bw, 6 days), had no visible injury, i.e., no clinical signs of dysfunction were observed. After last dose of glyphosate, serotonin (5-HT), dopamine (DA) and norepinephrine (NE) and its metabolites levels were determined in the brain regions striatum, hippocampus, prefrontal, cortex, hypothalamus and midbrain, by HPLC...
November 17, 2017: Environmental Research
https://www.readbyqxmd.com/read/29155989/5-hydroxytryptamine-independent-antidepressant-actions-of-r-ketamine-in-a-chronic-social-defeat-stress-model
#4
Kai Zhang, Chao Dong, Yuko Fujita, Atsuhiro Fujita, Kenji Hashimoto
Background: Previous reports suggest that 5-hydroxytryptamine (5-HT) might play a role in the antidepressant actions of (R,S)-ketamine. However, its role in the antidepressant actions of (R)-ketamine, which is more potent than (S)-ketamine, is unknown. This study was conducted to examine whether 5-HT depletion affects the antidepressant actions of (R)-ketamine in a chronic social defeat stress (CSDS) model. Methods: An inhibitor of 5-HT synthesis, para-chlorophenylalanine methyl ester hydrochloride (PCPA; 300 mg/kg, twice daily for 3 consecutive days), or vehicle was administered to control and CSDS susceptible mice...
November 16, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29147990/assessment-of-the-effect-of-once-daily-nitisinone-therapy-on-24-h-urinary-metadrenalines-and-5-hydroxyindole-acetic-acid-excretion-in-patients-with-alkaptonuria-after-4-weeks-of-treatment
#5
A S Davison, B Norman, A M Milan, A T Hughes, M Khedr, J Rovensky, J A Gallagher, L R Ranganath
BACKGROUND: One of the major metabolic consequences of using nitisinone to treat patients with alkaptonuria is that circulating tyrosine concentrations increase. As tyrosine is required for the biosynthesis of catecholamine neurotransmitters, it is possible that their metabolism is altered as a consequence. Herein we report the 24-h urinary excretion of normetadrenaline (NMA), metadrenaline (MA), 3-methoxytyramine (3-MT) (catecholamine metabolites) and 5-hydroxyindole acetic acid (5-HIAA, metabolite of serotonin) in a cohort of AKU patients before and after a 4-week treatment trial with nitisinone...
November 17, 2017: JIMD Reports
https://www.readbyqxmd.com/read/29125625/low-inherent-sensitivity-to-the-intoxicating-effects-of-ethanol-in-rhesus-monkeys-with-low-csf-concentrations-of-the-serotonin-metabolite-5-hydroxyindoleacetic-acid
#6
Elizabeth K Wood, Ryno Kruger, Angus Bennion, Bradley M Cooke, Stephen Lindell, Melanie Schwandt, David Goldman, Christina S Barr, Stephen J Suomi, J Dee Higley
INTRODUCTION: Type 2 Alcoholism is characterized by low serotonin system functioning and has a high degree of heritability, with offspring of alcoholics often showing a reduced response to the intoxicating effects of ethanol, which is thought to be marker for future alcohol use disorders (AUDs). As such, an important aim of studies investigating the origins of AUDs is understanding the relationship between serotonin system functioning and level of intoxication. A nonhuman primate model was used to evaluate observational ratings of sensitivity to ethanol and to further investigate the relationship between central serotonin activity and behavioral response to ethanol...
November 10, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/29101602/garcinia-mangostana-linn-displays-antidepressant-like-and-pro-cognitive-effects-in-a-genetic-animal-model-of-depression-a-bio-behavioral-study-in-the-flinders-sensitive-line-rat
#7
Inge Oberholzer, Marisa Möller, Brendan Holland, Olivia M Dean, Michael Berk, Brian H Harvey
There is abundant evidence for both disorganized redox balance and cognitive deficits in major depressive disorder (MDD). Garcinia mangostana Linn (GM) has anti-oxidant activity. We studied the antidepressant-like and pro-cognitive effects of raw GM rind in Flinders Sensitive Line (FSL) rats, a genetic model of depression, following acute and chronic treatment compared to a reference antidepressant, imipramine (IMI). The chemical composition of the GM extract was analysed for levels of α- and γ-mangostin...
November 3, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28982597/chronic-trans-astaxanthin-treatment-exerts-antihyperalgesic-effect-and-corrects-co-morbid-depressive-like-behaviors-in-mice-with-chronic-pain
#8
Xi Jiang, Qizhi Yan, Fuhe Liu, Changfeng Jing, Lianshu Ding, Lijin Zhang, Cong Pang
Patients suffering from chronic neuropathic pain are at high risk of co-morbid depression, which burdens healthcare. Trans-astaxanthin has been shown in our previous studies to exert antidepressant-like effect. This work aimed to investigate the effects of trans-astaxanthin on pain-related depressive-like behaviors in mice and explored the mechanism(s). Chronic constriction injury (CCI) model was used in this research. Chronic pain was evaluated by thermal hyperalgesia in Hargreaves test and mechanical allodynia in von Frey test, depressive-like behaviors were evaluated by immobility time in forced swim test and tail suspension test...
October 2, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28948556/effects-of-fluorencarbonic-acid-derivative-on-the-levels-of-monoamines-and-their-metabolites-in-brain-structures-of-rats-with-modeled-depression-like-state
#9
L K Khnychenko, E E Yakovleva, E R Bychkov, P D Shabanov
The effects of the new structural analogue of benactyzine, a derivative of fluorencarbonic acid, on monoamine levels in brain structures were studied in male Wistar rats with experimental depression. Depressive state in rats was modeled by single injection of reserpine (4 mg/kg). The concentrations of norepinephrine (NE), dopamine (DA), serotonin (5-HT), and their metabolites 3,4-dihydroxyphenylacetic acid (DOPAC), homovanilic acid (HVA), and 5-hydroxyindoleacetic acid (5-HIAA) in the hypothalamus and striatum were measured by HPLC...
September 26, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28948423/repetitive-transcranial-magnetic-stimulation-inhibits-sirt1-mao-a-signaling-in-the-prefrontal-cortex-in-a-rat-model-of-depression-and-cortex-derived-astrocytes
#10
Zheng-Wu Peng, Fen Xue, Cui-Hong Zhou, Rui-Guo Zhang, Ying Wang, Ling Liu, Han-Fei Sang, Hua-Ning Wang, Qing-Rong Tan
Repetitive transcranial magnetic stimulation (rTMS) is a useful monotherapy for depression or adjunctive therapy for resistant depression. However, the anti-depressive effects of different parameters and the underlying mechanisms remain unclear. Here, we aimed to assess the effect of rTMS with different parameters (1/5/10 Hz, 0.84/1.26 T) on the depressive-like behaviors, 5-hydroxytryptamine (5-HT), 5-HIAA (5-hydroxyindoleacetic acid) and DA and NE levels, and monoamine oxidase A (MAO-A) activity in chronic unpredictable stress-treated rats, along with the expression of sirtuin 1 (Sirt1) and MAO-A in the prefrontal cortex (PFC) and cortex-derived astrocytes from new-born rats...
September 25, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28933106/-review-for-sedative-and-hypnotic-mechanism-of-sedative-traditional-chinese-medicine-and-relative-active-components-on-neurotransmitters
#11
REVIEW
Fei-Yan Zhang, Jing-Jing Li, Ying Zhou, Xiao-Yu Xu
The sedative traditional Chinese medicine has a long history of clinical experience in treating insomnia. The main pharmacological effects of sedative agents are sedation, hypnosis, antianxiety and antidepression which might be related to certain neurotransmitters and cytokines and so on. This review summarized the mechanism of sedative traditional Chinese medicine and its active monomers based on neurotransmitters, including GABA, Glu, 5-HT, DA, NE and their metabolites 5-HIAA, HVA, DOPAC. The results showed that the most research about the sedative medicine at present was throught serotonergic and GABA ergic system...
December 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28904734/a-17-year-old-male-with-a-small-bowel-neuroendocrine-tumor-flushing-differential-diagnosis
#12
Maria Alejandra Forero Molina, Elizabeth Garcia, Deyanira Gonzalez-Devia, Rafael García-Duperly, Alonso Vera
BACKGROUND: Neuroendocrine tumors (NETs) are heterogeneous neoplasms that originate from cells with a secretory function. Small bowel NETs (SB-NETs) are related to serotonin hypersecretion which causes: flushing, diarrhea, abdominal pain, bronchoconstriction and heart involvement, also known as carcinoid syndrome (CS). CS can be confused with an allergic reaction and thus should be considered as a differential diagnosis in the allergy consult. We present the case of a pediatric patient initially referred under the suspicion of food allergies...
2017: World Allergy Organization Journal
https://www.readbyqxmd.com/read/28887162/extrinsic-nerves-are-not-involved-in-branchial-5-ht-dynamics-or-pulsatile-urea-excretion-in-gulf-toadfish-opsanus-beta
#13
Maria C Cartolano, Molly H B Amador, Velislava Tzaneva, William K Milsom, M Danielle McDonald
Gulf toadfish (Opsanus beta) can switch from continuously excreting ammonia as their primary nitrogenous waste to excreting predominantly urea in distinct pulses. Previous studies have shown that the neurotransmitter serotonin (5-HT) is involved in controlling this process, but it is unknown if 5-HT availability is under central nervous control or if the 5-HT signal originates from a peripheral source. Following up on a previous study, cranial nerves IX (glossopharyngeal) and X (vagus) were sectioned to further characterize their role in controlling pulsatile urea excretion and 5-HT release within the gill...
December 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/28841487/csf-apolipoprotein-e-in-attempted-suicide
#14
Peter Asellus, Peter Nordström, Anna-Lena Nordström, Jussi Jokinen
BACKGROUND: Cholesterol and cholesterol metabolism, involved in continued neural plasticity, has been associated to suicide and suicidal behavior. Apolipoprotein E (ApoE) plays an important role in the cholesterol metabolism. The purpose of this study was to investigate whether ApoE in cerebrospinal fluid was related to severity of suicidal behavior as measured by number of earlier suicide attempts, reversibility/interruptabilty and violent method of suicide attempt. METHODS: CSF ApoE and 5-hydroxyindolacetic acid (5-HIAA) were measured in 42 medication free suicide attempters...
January 1, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28804659/fatal-systemic-vasoconstriction-in-a-case-of-metastatic-small-intestinal-net
#15
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/28800105/anti-anxiety-effect-of-syringaresnol-4-o-%C3%AE-d-apiofuranosyl-1%C3%A2-2-%C3%AE-d-glucopyranoside-from-albizzia-julibrissin-durazz-leguminosae
#16
Jie Liu, Yue-Wei Lv, Jin-Li Shi, Xiao-Jie Ma, Yi Chen, Zhi-Quan Zheng, Sheng-Nan Wang, Jian-You Guo
Albizzia julibrissin Durazz, a Chinese Medicine, is commonly used for its anti-anxiety effects. (-)-syringaresnol-4-O-β-d-apiofuranosyl-(1→2)-β-d-glucopyranoside (SAG) is the main ingredient of Albizzia julibrissin Durazz. The present study investigated the anxiolytic effect and potential mechanisms on the HPA axis and monoaminergic systems of SAG on acute restraint-stressed rats. The anxiolytic effect of SAG was examined through an open field test and an elevated plus maze test. The concentration of CRF, ACTH, and CORT in plasma was examined by an enzyme-linked immune sorbent assay (ELISA) kit while neurotransmitters in the cerebral cortex and hippocampus of the brain were examined by High Performance Liquid Chromatography (HPLC)...
August 11, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28757050/electroencephalographic-cognitive-and-neurochemical-effects-of-ly3130481-cerc-611-a-selective-antagonist-of-tarp-%C3%AE-8-associated-ampa-receptors
#17
Jeffrey M Witkin, Jennifer Li, Gary Gilmour, Stephen N Mitchell, Guy Carter, Scott D Gleason, Wesley F Seidel, Brian J Eastwood, Andrew McCarthy, Warren J Porter, Jon Reel, Kevin M Gardinier, Akihiko S Kato, Keith A Wafford
6-[(1S)-1-[1-[5-(2-hydroxyethoxy)-2-pyridyl]pyrazol-3-yl]ethyl]-3H-1,3-benzothiazol-2-one (LY3130481 or CERC-611) is a selective antagonist of AMPA receptors containing transmembrane AMPA receptor regulatory protein (TARP) γ-8. This molecule has been characterized as a potent and efficacious anticonvulsant in an array of acute and chronic epilepsy models in rodents. The present set of experiments was designed to assess the effects of LY3130481 on the electroencephelogram (EEG), cognitive function, and neurochemical outflow...
July 28, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28749090/relationships-of-cerebrospinal-fluid-monoamine-metabolite-levels-with-clinical-variables-in-major-depressive-disorder
#18
Hyung Shin Yoon, Kotaro Hattori, Shintaro Ogawa, Daimei Sasayama, Miho Ota, Toshiya Teraishi, Hiroshi Kunugi
OBJECTIVE: Many studies have investigated cerebrospinal fluid (CSF) monoamine metabolite levels in depressive disorders. However, their clinical significance is still unclear. We tried to determine whether CSF monoamine metabolite levels could be a state-dependent marker for major depressive disorder (MDD) based on analyses stratified by clinical variables in a relatively large sample. METHODS: Subjects were 75 patients with MDD according to DSM-IV criteria and 87 healthy controls, matched for age, sex, and ethnicity (Japanese)...
July 25, 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28740098/puerarin-ameliorated-the-behavioral-deficits-induced-by-chronic-stress-in-rats
#19
Zhi-Kun Qiu, Guan-Hua Zhang, De-Sheng Zhong, Jia-Li He, Xu Liu, Ji-Sheng Chen, Da-Nian Wei
The present study aimed to investigate the mechanisms underlying the antidepressant-like effects of puerarin via the chronic unpredictable stress (CUS) procedure in rats. Similar to Sertraline (Ser), Chronic treatment of puerarin (60 and 120 mg/kg, i.g) elicited the antidepressant-like effects by reversing the decreased sucrose preference in sucrose preference test (SPT), by blocking the increased latency to feed in novelty-suppressed feeding test (NSFT) and the increased immobility time in forced swimming test (FST) without affecting locomotor activity...
July 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28723348/central-serotonin-attenuates-lps-induced-systemic-inflammation
#20
Clarissa M D Mota, Caroline Rodrigues-Santos, Rodrigo A R Fernández, Ruither O G Carolino, José Antunes-Rodrigues, Janete A Anselmo-Franci, Luiz G S Branco
Serotonin (5-HT) is a neuromodulator involved in several central-mediated mechanisms, such as endocrine processes, behavior, and sleep. Dysfunction of the serotonergic system is mainly linked to psychiatric disorders, but emerging evidence suggests that immune system activation may also alter brain 5-HT signaling. However, whether central 5-HT modulates systemic inflammation (SI) remains unknown. For this purpose, male Wistar rats (280-350g, 8-9weeks) were submitted to the experimental protocols beginning between 9 and 10AM with the performance of injections...
July 16, 2017: Brain, Behavior, and Immunity
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