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gamma-aminobutyric acid

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https://www.readbyqxmd.com/read/28725181/impact-of-proestrus-on-gene-expression-in-the-medial-preoptic-area-of-mice
#1
Csaba Vastagh, Zsolt Liposits
The antero-ventral periventricular zone (AVPV) and medial preoptic area (MPOA) have been recognized as gonadal hormone receptive regions of the rodent brain that-via wiring to gonadotropin-releasing hormone (GnRH) neurons-contribute to orchestration of the preovulatory GnRH surge. We hypothesized that neural genes regulating the induction of GnRH surge show altered expression in proestrus. Therefore, we compared the expression of 48 genes obtained from intact proestrous and metestrous mice, respectively, by quantitative real-time PCR (qPCR) method...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28714121/acetylcholine-dependent-upregulation-of-task-1-channels-in-thalamic-interneurons-by-a-smooth-muscle-like-signalling-pathway
#2
Michael Leist, Susanne Rinné, Maia Datunashvili, Ania Aissaoui, Hans-Christian Pape, Niels Decher, Sven G Meuth, Thomas Budde
The dorsal part of the lateral geniculate nucleus (dLGN) is the main thalamic site for state-dependent transmission of visual information. Non-retinal inputs from the ascending arousal system and inhibition provided by γ-aminobutyric acid (GABA)ergic local circuit interneurons (INs) control neuronal activity within the dLGN. In particular, acetylcholine (ACh) depolarizes thalamocortical relay (TC) neurons by inhibiting two-pore domain potassium (K2P ) channels. Conversely, ACh also hyperpolarizes INs via an as-yet-unknown mechanism...
July 17, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28704903/enchancement-of-gamma-aminobutyric-acid-production-by-co-localization-of-neurospora-crassa-or74a-glutamate-decarboxylase-with-escherichia-coli-gaba-transporter-via-synthetic-scaffold-complex
#3
Sivachandiran Somasundaram, Murali Kannan Maruthamuthu, Irisappan Ganesh, Gyeong Tae Eom, Soon Ho Hong
Gamma-aminobutyric acid is a precusor of nylon-4, which is a promising heat-resistant biopolymer. GABA can be produced from the decarboxylation of glutamate by glutamate decarboxylase. In this study, a synthetic scaffold complex strategy was employed involving Neurospora crassa glutamate decarboxylase (GadB) and Escherichia coli GABA antiporter (GadC) to improve GABA production. To construct the complex, the SH3 domain was attached to the N. crassa GadB, and SH3 ligand was attached to the N-terminus, middle and C-terminus of E...
July 14, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28704125/effect-of-feeding-high-gamma-aminobutyric-acid-containing-giant-embryo-black-sticky-rice-oryza-sativa-l-on-anxiety-related-behavior-of-c57bl-6-mice
#4
Woo-Young Jung, Sung-Gon Kim, Jin-Seong Lee, Hyeon-Kyeong Kim, Beung-Gu Son, Jong-Woo Kim, Jae-Won Suh
The aim of this study was to determine the effect of feeding high gamma-aminobutyric acid (GABA)-containing black sticky rice giant embryo (BSRGE, Oryza sativa L.) on anxiety-related behavior of C57BL/6 mice. Experimental feedstuff (BSRGE with high GABA+AIN-76A) and control (AIN-76A) were provided to C57BL/6 mouse for 10 days. Antianxiety effects of BSRGE with high GABA were measured using an elevated plus maze. On day 8, the number of open arm entries by GABA and control groups were 1.10 ± 1.60 (mean ± SD) and 0...
July 13, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28701860/noradrenaline-serotonin-gaba-and-glycine-in-cerebrospinal-fluid-during-labor-pain-a-cross-sectional-prospective-study
#5
Pornpan Chalermkitpanit, Atikun Thonnagith, Phatthanaphol Engsusophon, Somrat Charuluxananan, Sittisak Honsawek
BACKGROUND AND AIMS: The inhibitory pathways that play a role in spinal modulation include local interneurons and descending control. Clinical data regarding the role of these pathways in acute pain is lacking. Accordingly, the aim of this study was to evaluate cerebrospinal fluid (CSF) levels of noradrenaline, serotonin, gamma-aminobutyric acid (GABA), and glycine in parturients with labor pain compared to those without labor pain. METHODS: One hundred term uncomplicated pregnant women receiving spinal anesthesia for cesarean section were enrolled in this prospective cross-sectional study...
2017: Pain Research & Management: the Journal of the Canadian Pain Society
https://www.readbyqxmd.com/read/28699326/gamma-aminobutyric-acid-gaba-receptors-rho-gabrr-gene-polymorphisms-and-risk-for-migraine
#6
Elena García-Martín, Carmen Martínez, Mercedes Serrador, Hortensia Alonso-Navarro, Francisco Navacerrada, Gara Esguevillas, Esteban García-Albea, José A G Agúndez, Félix Javier Jiménez-Jiménez
BACKGROUND/OBJECTIVES: The possible role of gammaaminobutyric acid (GABA) in the pathogenesis of migraine has been suggested by a number of biochemical, pharmacological, neurophysiological and experimental data. We investigated the possible association between the most common single nucleotide polymorphisms (SNPs) in the GABA receptor rho1, 2, and 3 genes (GABRR1, GABRR2, and GABRR3) and the risk of developing migraine. METHODS: The frequency of GABRR1 rs12200969, GABRR1 rs1186902, GABRR2 rs282129, and GABRR3 rs832032 genotypes and allelic variants were studied in a case-control association study involving 197 patients with migraine and 278 healthy controls by means of a TaqMan-based qPCR Assay...
July 2017: Headache
https://www.readbyqxmd.com/read/28697889/somatostatin-positive-gamma-aminobutyric-acid-interneuron-deficits-in-depression-cortical-microcircuit-and-therapeutic-perspectives
#7
REVIEW
Corey Fee, Mounira Banasr, Etienne Sibille
The functional integration of external and internal signals forms the basis of information processing and is essential for higher cognitive functions. This occurs in finely tuned cortical microcircuits whose functions are balanced at the cellular level by excitatory glutamatergic pyramidal neurons and inhibitory gamma-aminobutyric acidergic (GABAergic) interneurons. The balance of excitation and inhibition, from cellular processes to neural network activity, is characteristically disrupted in multiple neuropsychiatric disorders, including major depressive disorder (MDD), bipolar disorder, anxiety disorders, and schizophrenia...
June 8, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/28690493/emerging-signaling-pathway-in-arcuate-feeding-related-neurons-role-of-the-acbd7
#8
REVIEW
Damien Lanfray, Denis Richard
The understanding of the mechanisms whereby energy balance is regulated is essential to the unraveling of the pathophysiology of obesity. In the last three decades, focus was put on the metabolic role played by the hypothalamic neurons expressing proopiomelanocortin (POMC) and cocaine and amphetamine regulated transcript (CART) and the neurons co-localizing agouti-related peptide (AgRP), neuropeptide Y (NPY), and gamma-aminobutyric acid (GABA). These neurons are part of the leptin-melanocortin pathway, whose role is key in energy balance regulation...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28687488/rescuing-fluoride-induced-damages-in-liver-with-gamma-aminobutyric-acid
#9
Haoyue Yang, Ronge Xing, Song Liu, Huahua Yu, Pengcheng Li
Fluorine poisoning affects human health all over the world and an urgent task is to develop alleviative medicine to recover or ameliorate the damages to the body. Here we studied the effects of gamma-aminobutyric acid (GABA), a liver protector reported previously, on fluoride-induced damage in the mouse liver. Through microscope imaging of the liver tissue, TUNEL immunostaining, real-time RT-PCR, enzyme immunoassay and colorimetric method, we found that GABA supplementation prevented the metabolic toxicity caused by fluoride treatment in mice...
July 4, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28680297/altered-gabaergic-signaling-in-brain-disease-at-various-stages-of-life
#10
REVIEW
Yoo Sung Kim, Bo-Eun Yoon
In the healthy brain, gamma-aminobutyric acid (GABA) is regulated by neurons and glia. This begs the question: what happens in the malfunctioning brain? There are many reasons why diseases occur, including genetic mutations, systemic problems, and environmental influences. There are also many ways in which GABA can become dysregulated, such as through alterations in its synthesis or release, and changes in systems that respond to it. Notably, dysregulation of GABA can have a large impact on the brain. To date, few reviews have examined brain diseases in which dysregulation of GABA is implicated as an underlying factor...
June 2017: Experimental Neurobiology
https://www.readbyqxmd.com/read/28675386/unique-prefrontal-gaba-and-glutamate-disturbances-in-co-occurring-bipolar-disorder-and-alcohol-dependence
#11
J J Prisciandaro, B K Tolliver, A P Prescot, H M Brenner, P F Renshaw, T R Brown, R F Anton
Bipolar disorder (BD) and alcohol dependence (AD) frequently co-occur, and co-occurring BD and AD are associated with devastating public health costs. Minimal neurobiological research exists to guide the development of effective treatments for this treatment-resistant population. We believe the present study represents the first investigation of prefrontal gamma-aminobutyric acid (GABA) and glutamate levels in co-occurring BD and current AD. The participants were 78 individuals who met DSM-IV criteria for BD I/II and current AD (n=20), BD I/II alone (n=19), current AD alone (n=20) or no diagnosis (n=19)...
July 4, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28674926/enhancement-of-gamma-aminobutyric-acid-gaba-levels-using-an-autochthonous-lactobacillus-futsaii-cs3-as-starter-culture-in-thai-fermented-shrimp-kung-som
#12
Chatthaphisuth Sanchart, Onnicha Rattanaporn, Dietmar Haltrich, Pimpimol Phukpattaranont, Suppasil Maneerat
Gamma-aminobutyric acid (GABA) is a non-proteinogenic amino acid, which has a variety of well-characterized beneficial physiological functions. In order to improve GABA levels and the fermentation process of Thai fermented shrimp (Kung-Som), autochthonous Lactobacillus futsaii CS3 was inoculated as a starter culture into Kung-Som, and its effects on the quality of Kung-Som were studied. The optimal conditions for GABA production in Kung-Som as obtained by response surface methodology (RSM) using a central composite design (CCD) were an inoculum size of roughly 10(7) CFU/g (X1) of L...
August 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28674483/hypotensive-response-to-angiotensin-ii-type-2-receptor-stimulation-in-the-rostral-ventrolateral-medulla-requires-functional-gaba-a-receptors
#13
Laura Légat, Sofie Brouwers, Ilse J Smolders, Alain G Dupont
Objectives: Angiotensin II, glutamate and gamma-aminobutyric acid (GABA) interact within the rostral ventrolateral medulla (RVLM) and the paraventricular nucleus (PVN) modulating the central regulation of blood pressure and sympathetic tone. Our aim was to assess the effects of local angiotensin II type 2 receptor stimulation within the RVLM and the PVN on neurotransmitter concentrations and mean arterial pressure (MAP). Methods:In vivo microdialysis was used for measurement of extracellular glutamate and GABA levels and for local infusion of the angiotensin II type 2 receptor agonist Compound 21 in the RVLM and the PVN of conscious normotensive Wistar rats...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28674253/effect-of-valerian-hop-mixture-on-sleep-related-behaviors-in-drosophila-melanogaster
#14
Hyeon-Son Choi, Bong Soo Ko, Hae Dun Kim, Ki-Bae Hong, Hyung Joo Suh
The aim of this study was to investigate the sleep-promoting effect of a Valerian/Hops mixture in fruit flies. The HPLC analysis showed that Valerenic acid (1260.53 µg/g of extract) and Xanthohumol (Cascade: 827.49 µg/g, Hallertau: 763.60 µg/g, Saaz: 186.93 µg/g) were contained in Valerian and Hop, respectively. The sleep patterns of fruit flies on the Valerian/Hops were examined in both baseline and caffeine-treated conditions. Total activities of flies significantly decreased in 20 mg/mL Valerian (74%), 10 mg/mL Cascade (25%), and 5 mg/mL Hallertau (11%) during nighttime or daytime compared with the control...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28659709/meclofenamic-acid-improves-the-signal-to-noise-ratio-for-visual-responses-produced-by-ectopic-expression-of-human-rod-opsin
#15
Cyril G Eleftheriou, Jasmina Cehajic-Kapetanovic, Franck P Martial, Nina Milosavljevic, Robert A Bedford, Robert J Lucas
PURPOSE: Retinal dystrophy through outer photoreceptor cell death affects 1 in 2,500 people worldwide with severe impairment of vision in advanced stages of the disease. Optogenetic strategies to restore visual function to animal models of retinal degeneration by introducing photopigments to neurons spared degeneration in the inner retina have been explored, with variable degrees of success. It has recently been shown that the non-steroidal anti-inflammatory and non-selective gap-junction blocker meclofenamic acid (MFA) can enhance the visual responses produced by an optogenetic actuator (channelrhodopsin) expressed in retinal ganglion cells (RGCs) in the degenerate retina...
2017: Molecular Vision
https://www.readbyqxmd.com/read/28652501/serum-levels-of-neuroactive-steroids-in-first-episode-antipsychotic-na%C3%A3-ve-schizophrenic-patients-and-its-correlation-with-aggression-a-case-control-study
#16
R K Solanki, P Sharma, A Tyagi, C Singh
BACKGROUND: The evidence of hypothalamic-pituitary-adrenal axis dysfunction in schizophrenia has been reviewed in the context of the stress-diathesis model. Overactivation of this axis leads to altered blood levels of cortisol and dehydroepiandrosterone sulfate (DHEA-S). These neurosteroids in turn act on the hippocampus and interact with gamma-aminobutyric acid and N-methyl-D-aspartate receptors leading to neurotoxicity and may be involved in the neurobiology of aggression. This study aimed to explore the blood level of these neurosteroids and ascertain its correlation with state aggression and psychopathology in first-episode antipsychotic-naïve schizophrenic patients...
June 2017: East Asian Archives of Psychiatry: Official Journal of the Hong Kong College of Psychiatrists
https://www.readbyqxmd.com/read/28648058/effect-of-exogenous-nitro-oxide-on-chilling-tolerance-polyamine-proline-and-%C3%AE-aminobutyric-acid-in-bamboo-shoots-phyllostachys-praecox-f-prevernalis
#17
Di Wang, Li Li, Yanqun Xu, Jarukitt Limwachiranon, Dong Li, Zhaojun Ban, Zisheng Luo
The effects of exogenous nitro oxide (NO) on chilling resistance and the metabolism of polyamine, proline, and γ-aminobutyric acid of bamboo shoots were investigated. Bamboo shoots were dipped in 0.07 mM sodium nitroprusside (SNP) and stored at 1 °C for 56 days. During the storage, the development of chilling injury of SNP treated bamboo shoots was inhibited with decreased accumulation of malonaldehyde and electrical leakage. At the end of storage, the chilling injury incidence of treated bamboo shoots decreased by 37...
July 7, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28645789/disruption-of-gaba-a-mediated-intracortical-inhibition-in-patients-with-chorea-acanthocytosis
#18
Raffaele Dubbioso, Marcello Esposito, Silvio Peluso, Rosa Iodice, Giuseppe De Michele, Lucio Santoro, Fiore Manganelli
Chorea-acanthocytosis (Ch-Ac) is an autosomal recessive neurodegenerative disorder characterized by adult-onset chorea, acanthocytes in the peripheral blood, and Huntington's disease-like neuropsychiatric symptoms. Animal studies have shown mutation-related dysregulated cortical gamma-aminobutyric acid (GABA)ergic inhibitory networks in its pathophysiology. Herein we found that in patients with Ch-Ac there is a striking alteration of intracortical inhibitory circuits detected by using paired pulse transcranial magnetic stimulation protocols...
June 20, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28638200/brain-gamma-aminobutyric-acid-gaba-concentration-of-the-prefrontal-lobe-in-unmedicated-patients-with-obsessive-compulsive-disorder-a-research-of-magnetic-resonance-spectroscopy
#19
Zongfeng Zhang, Qing Fan, Yanle Bai, Zhen Wang, Haiyin Zhang, Zeping Xiao
BACKGROUND: In recent years, a large number of neuroimaging studies found that the Cortico-Striato- Thalamo-Cortical circuit (CSTC), including the prefrontal lobe, a significant part of CSTC, has disturbance metabolically in patients with Obsessive-Compulsive Disorder (OCD). AIM: Explore the correlation between the neuro-metabolic features and clinical characteristics of OCD patients using magnetic resonance spectroscopy technology. METHODS: 88 patients with OCD who were not received medication and outpatient treatment for 8 weeks and 76 health controls were enrolled, there was no significant difference in gender, age or education level between the two groups...
October 25, 2016: Shanghai Archives of Psychiatry
https://www.readbyqxmd.com/read/28637045/effects-of-injection-of-gamma-aminobutyric-acid-agonists-into-the-nucleus-accumbens-on-naloxone-induced-morphine-withdrawal
#20
Betilay Topkara, Hasan R Yananli, Eren Sakallı, Mahluga Jafarova Demirkapu
AIMS: This study was to investigate the effects of local administration of gamma-aminobutyric acid (GABA) agonists into the nucleus accumbens (NAc) on naloxone-induced morphine withdrawal symptoms. METHODS: Bilateral guide cannulas were stereotaxically implanted in the shell or core regions of the NAc of Sprague-Dawley rats. After a recovery period, 3 morphine pellets, each consisting of 75 mg morphine base, were placed subcutaneously on the first and third days of the study with the rats under mild ether anaesthesia...
June 22, 2017: Pharmacology
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