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https://www.readbyqxmd.com/read/29622187/assessment-of-oxidation-compounds-in-oaked-chardonnay-wines-a-gc-ms-and-1-h-nmr-metabolomics-approach
#1
Joana Pinto, Ana Sofia Oliveira, Joana Azevedo, Victor De Freitas, Paulo Lopes, Isabel Roseira, Miguel Cabral, Paula Guedes de Pinho
The oxidation of oaked Chardonnay wine during long-term storage was studied by headspace solid-phase microextraction coupled to gas chromatography-mass spectrometry (HS-SPME-GC/MS) and proton (1 H) nuclear magnetic resonance (NMR) spectroscopy. Three distinct groups of wine were defined based on the browning index: control, least oxidized (OX1) and most oxidized (OX2). HS-SPME-GC/MS and1 H NMR spectroscopy enabled the profiling of a total of 155 compounds in all wine samples including aldehydes, ketones, esters, polyphenols, among other classes...
August 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29573092/biosynthesis-of-the-polycyclic-system-in-the-antifungal-hsaf-and-analogues-from-lysobacter-enzymogenes
#2
Yaoyao Li, Haoxin Wang, Yan Liu, Yujie Jiao, Shanren Li, Yuemao Shen, Liangcheng Du
The biocontrol agent Lysobacter enzymogenes produces polycyclic tetramate macrolactams (PoTeM) including the antifungal HSAF. To elucidate the biosynthesis of the cyclic systems, we identified eleven HSAF precursors/analogues with zero, one, two, or three rings, by heterologous expression of the HSAF gene cluster. Through a series of combinatorial gene expression and deletion, we showed that OX3 is the "gatekeeper" responsible for the first 5-membered ring formation from lysobacterene A, OX1 and OX2 are for the second ring formation but with different selectivity, and OX4 is for the 6-membered ring formation...
March 24, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29545164/interaction-between-orexin-a-and-bone-morphogenetic-protein-system-on-progesterone-biosynthesis-by-rat-granulosa-cells
#3
Shiho Fujita, Toru Hasegawa, Yuki Nishiyama, Satoshi Fujisawa, Yasuhiro Nakano, Takahiro Nada, Nahoko Iwata, Yasuhiko Kamada, Hisashi Masuyama, Fumio Otsuka
The involvement of orexins in reproductive function has been gradually uncovered. However, the functional role of orexins in ovarian steroidogenesis remains unclear. In the present study, we investigated the effects of orexin A on ovarian steroidogenesis by using rat primary granulosa cells that express both OX1 and OX2 receptors for orexins. Treatment with orexin A enhanced progesterone, but not estradiol, biosynthesis induced by FSH, whereas it did not affect basal levels of progesterone or estradiol. In accordance with the effects on steroidogenesis, orexin A increased the mRNA levels of progesterogenic enzymes, including StAR, P450scc and 3βHSD, but not P450arom, and cellular cAMP synthesis induced by FSH...
March 12, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29498809/antibody-based-cell-surface-proteome-profiling-of-metastatic-breast-cancer-primary-explants-and-cell-lines
#4
Vera S Donnenberg, Jayce Jieming Zhang, Erika Moravcikova, Ernest Michael Meyer, Haihui Lu, Christian T Carson, Albert D Donnenberg
Flow cytometric cell surface proteomics provides a new and powerful tool to determine changes accompanying neoplastic transformation and invasion, providing clues to essential interactions with the microenvironment as well as leads for potential therapeutic targets. One of the most important advantages of flow cytometric cell surface proteomics is that it can be performed on living cells that can be sorted for further characterization and functional studies. Here, we document the surface proteome of clonogenic metastatic breast cancer (MBrCa) explants, which was strikingly similar to that of normal mesenchymal stromal cells (P = 0...
April 2018: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
https://www.readbyqxmd.com/read/29474954/orexin-1-and-orexin-2-receptor-antagonism-in-the-basolateral-amygdala-modulate-long-term-potentiation-of-the-population-spike-in-the-perforant-path-dentate-gyrus-evoked-field-potential-in-rats
#5
Motahareh Rouhi Ardeshiri, Narges Hosseinmardi, Esmaeil Akbari
Involvement of amygdalo-hippocampal substructures in patients with narcolepsy due to deficiencies in the orexinergic system, and the presence of hippocampus-dependent memory impairments in this disorder, have led us to investigate the effects of orexin 1 and 2 receptor antagonism in the basolateral amygdala (BLA) on long-term potentiation (LTP) of dentate gyrus (DG) granular cells. We used a 200-Hz high-frequency stimulation protocol in anesthetized rats. We studied the long-term synaptic plasticity of perforant path-dentate gyrus granule cells following the inactivation of orexin receptors before and after tetanic stimulation...
March 2018: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/29472002/role-of-orexins-in-the-central-and-peripheral-regulation-of-glucose-homeostasis-evidences-mechanisms
#6
REVIEW
Monika Rani, Raghuvansh Kumar, Pawan Krishan
Orexins (A & B), neuropeptides of hypothalamic origin, act through G-protein coupled receptors, orexin 1 receptor (OX1 R) and orexin 2 receptor (OX2 R). The wide projection of orexin neurons in the hypothalamic region allows them to interact with the other neurons and regulate food intake, emotional status, sleep wake cycle and energy metabolism. The autonomic nervous system plays an important regulatory role in the energy metabolism as well as glucose homeostasis. Orexin neurons are also under the control of GABAergic neurons...
April 2018: Neuropeptides
https://www.readbyqxmd.com/read/29466387/overexpression-of-the-alfalfa-wrky11-gene-enhances-salt-tolerance-in-soybean
#7
Youjing Wang, Lin Jiang, Jiaqi Chen, Lei Tao, Yimin An, Hongsheng Cai, Changhong Guo
The WRKY transcription factors play an important role in the regulation of transcriptional reprogramming associated with plant abiotic stress responses. In this study, the WRKY transcription factor MsWRKY11, containing the plant-specific WRKY zinc finger DNA-binding motif, was isolated from alfalfa. The MsWRKY11 gene was detected in all plant tissues (root, stem, leaf, flower, and fruit), with high expression in root and leaf tissues. MsWRKY11 was upregulated in response to a variety of abiotic stresses, including salinity, alkalinity, cold, abscisic acid, and drought...
2018: PloS One
https://www.readbyqxmd.com/read/29167500/insights-into-the-species-specific-metabolic-engineering-of-glucosinolates-in-radish-raphanus-sativus-l-based-on-comparative-genomic-analysis
#8
Jinglei Wang, Yang Qiu, Xiaowu Wang, Zhen Yue, Xinhua Yang, Xiaohua Chen, Xiaohui Zhang, Di Shen, Haiping Wang, Jiangping Song, Hongju He, Xixiang Li
Glucosinolates (GSLs) and their hydrolysis products present in Brassicales play important roles in plants against herbivores and pathogens as well as in the protection of human health. To elucidate the molecular mechanisms underlying the formation of species-specific GSLs and their hydrolysed products in Raphanus sativus L., we performed a comparative genomics analysis between R. sativus and Arabidopsis thaliana. In total, 144 GSL metabolism genes were identified, and most of these GSL genes have expanded through whole-genome and tandem duplication in R...
November 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29138106/the-subthalamic-neurons-are-activated-by-both-orexin-a-and-orexin-b
#9
Qing Sheng, Yan Xue, Ying Wang, An-Qi Chen, Cui Liu, Yun-Hai Liu, Hong-Yan Chu, Lei Chen
The subthalamic nucleus is an important nucleus in the indirect pathway of the basal ganglia circuit and therefore is involved in motor control under both normal and pathological conditions. Morphological studies reveal that the subthalamic nucleus receives relatively dense orexinergic projections originating from the hypothalamus. Both orexin-1 (OX1 ) and orexin-2 (OX2 ) receptors are expressed in the subthalamic nucleus. To explore the functions of orexinergic system in the subthalamic nucleus, extracellular electrophysiological recordings and behavioral tests were performed in the present study...
January 15, 2018: Neuroscience
https://www.readbyqxmd.com/read/29129052/synthesis-and-evaluation-of-orexin-1-receptor-antagonists-with-improved-solubility-and-cns-permeability
#10
David A Perrey, Ann M Decker, Yanan Zhang
Orexins are hypothalamic neuropeptides playing important roles in many functions including the motivation of addictive behaviors. Blockade of the orexin-1 receptor has been suggested as a potential strategy for the treatment of drug addiction. We have previously reported OX1 receptor antagonists based on the tetrahydroisoquinoline scaffold with excellent OX1 potency and selectivity; however, these compounds had high lipophilicity (clogP > 5) and low to moderate solubility. In an effort to improve their properties, we have designed and synthesized a series of analogues where the 7-position substituents known to favor OX1 potency and selectivity were retained, and groups of different nature were introduced at the 1-position where substitution was generally tolerated as demonstrated in previous studies...
November 20, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29079898/overexpression-of-a-predominantly-root-expressed-nac-transcription-factor-in-wheat-roots-enhances-root-length-biomass-and-drought-tolerance
#11
Dandan Chen, Shoucheng Chai, C Lynne McIntyre, Gang-Ping Xue
TaRNAC1 is a constitutively and predominantly root-expressed NAC transcription factor. TaRNAC1 overexpression in wheat roots confers increased root length, biomass and drought tolerance and improved grain yield under water limitation. A large and deep root system is an important trait for yield sustainability of dryland cereal crops in drought-prone environments. This study investigated the role of a predominantly root-expressed NAC transcription factor from wheat (TaRNAC1) in the root growth. Expression analysis showed that TaRNAC1 was a constitutively expressed gene with high level expression in the roots and was not drought-upregulated...
February 2018: Plant Cell Reports
https://www.readbyqxmd.com/read/29066961/different-molecular-behavioral-endophenotypes-in-c57bl-6j-mice-predict-the-impact-of-ox-1-receptor-blockade-on-binge-like-ethanol-intake
#12
Manuel Alcaraz-Iborra, Francisco Navarrete, Elisa Rodríguez-Ortega, Leticia de la Fuente, Jorge Manzanares, Inmaculada Cubero
Ethanol (EtOH) research has focused on stages of dependence. It is of paramount importance to more deeply understand the neurobehavioral factors promoting increased risk for EtOH binge drinking during the early stages of the addiction cycle. The first objective of this study was to evaluate whether C57BL/6J mice showing high drinking in the dark (DID) exhibit neurobehavioral traits known to contribute to EtOH binge-drinking disorders. Comparing high vs. low drinkers (HD/LD), we evaluated different types of basal anxiety-like responses, EtOH preference and sensitivity to the reinforcing properties of EtOH, and basal mRNA expression of the OX1/OX2 receptors (OX1r/OX2r) within the prefrontal cortex (PFC) and the nucleus accumbens (NAcc)...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/29042364/a-cd200r-cd28-fusion-protein-appropriates-an-inhibitory-signal-to-enhance-t-cell-function-and-therapy-of-murine-leukemia
#13
Shannon K Oda, Andrew W Daman, Nicolas M Garcia, Felecia Wagener, Thomas M Schmitt, Xiaoxia Tan, Aude G Chapuis, Philip D Greenberg
Acute myeloid leukemia (AML), the most common adult acute leukemia in the United States, has the poorest survival rate, with 26% of patients surviving 5 years. Adoptive immunotherapy with T cells genetically modified to recognize tumors is a promising and evolving treatment option. However, antitumor activity, particularly in the context of progressive leukemia, can be dampened both by limited costimulation and triggering of immunoregulatory checkpoints that attenuate T-cell responses. Expression of CD200 (OX2), a negative regulator of T-cell function that binds CD200 receptor (CD200R), is commonly increased in leukemia and other malignancies and is associated with poor prognosis in leukemia patients...
November 30, 2017: Blood
https://www.readbyqxmd.com/read/29042271/blockade-of-the-orexin-receptors-in-the-ca1-region-of-hippocampus-decreased-the-lateral-hypothalamic-induced-antinociceptive-responses-in-the-model-of-orofacial-formalin-test-in-the-rats
#14
Amir Haghparast, Iman Shafiei, Amir-Mohammad Alizadeh, Somayeh Ezzatpanah, Abbas Haghparast
The role of hippocampus and lateral hypothalamus (LH) in modulation of formalin-induced nociception has been established. The present study aims to examine the role of orexin receptors in the Cornu Ammonis 1 (CA1) region of hippocampus in modulation of the LH-induced antinociception in the orofacial formalin test. Male Wistar rats were unilaterally implanted with two cannulae into the LH and CA1. Intra-LH microinjection of carbachol was done 5min after intra-CA1 administration of SB-334867 (OX1R antagonist) or TCS OX2 29 (OX2R antagonist)...
January 2018: Peptides
https://www.readbyqxmd.com/read/28993579/role-of-orexin-receptor-subtypes-in-the-inhibitory-effects-of-orexin-a-on-potassium-chloride-induced-increases-in-intracellular-calcium-ion-levels-in-neurons-derived-from-dorsal-root-ganglion-of-carrageenan-treated-rats
#15
Manabu Ishikawa, Yuri Aono, Tadashi Saigusa
We analysed the roles of orexin receptors in the effects of orexin-A on KCl-induced increases in intracellular calcium ion levels ([Ca2+ ]i ) in C-fiber-like small neurons of rats with inflammation induced by intraplantar injection of carrageenan into the hind paw. Controls were treated with saline. Paw withdrawal and threshold forces in response to tactile stimuli were determined using von Frey filaments. [Ca2+ ]i in C-fiber-like neurons derived from dorsal root ganglia was visualised using a calcium fluorescence probe...
December 27, 2017: Journal of Oral Science
https://www.readbyqxmd.com/read/28928300/zoonotic-surveillance-for-rickettsiae-in-rodents-and-mapping-of-vectors-of-rickettsial-diseases-in-india-a-multi-centric-study
#16
Rina Tilak, Rajesh Kunwar, P K Tyagi, Anurag Khera, R K Joshi, Urmila B Wankhade
BACKGROUND: The global resurgence of rickettsial diseases and their potential to impact the fitness of military personnel and inflict widespread casualties amongst civil populations has emerged as a major cause of public health concern. Absence of surveillance system, lack of awareness amongst medical fraternity to rickettsial activity along with the difficulty in diagnosis because of their protean clinical manifestations are reasons for the outbreaks of these diseases. OBJECTIVES: To determine rickettsial activity amongst rodents and study vector diversity, abundance and their distribution to enable mapping of rickettsial hotspots...
July 2017: Indian Journal of Public Health
https://www.readbyqxmd.com/read/28890208/role-of-orexin-receptors-in-the-ventral-tegmental-area-on-acquisition-and-expression-of-morphine-induced-conditioned-place-preference-in-the-rats
#17
Sharareh Farahimanesh, Shahram Zarrabian, Abbas Haghparast
The orexins are hypothalamic neuropeptides and their role in reward processing and drug addiction has been demonstrated. The extent of involvement of each orexin receptor in the acquisition and expression of conditioned place preference (CPP) for morphine is still a matter of controversy. We investigated the functional differences between orexin-1 and -2 receptor blockade in the ventral tegmental area (VTA) on the acquisition and expression of morphine CPP. A total of 86 adult male Wistar rats weighing 250±30g (age 7-8weeks) received intra-VTA microinjection of either SB334867 (0...
September 4, 2017: Neuropeptides
https://www.readbyqxmd.com/read/28889006/role-of-intra-accumbal-orexin-receptors-in-the-acquisition-of-morphine-induced-conditioned-place-preference-in-the-rats
#18
Mirmohammadali Mirramezani Alizamini, Zahra Farzinpour, Somayeh Ezzatpanah, Abbas Haghparast
Orexin receptor shave essential role in the induction of reward-related behaviors to several drugs of abuse. In the present study, we investigated the effects of bilateral administration of SB334867, as an orexin-1 receptor antagonist, and TCS OX2 29, as an orexin-2 receptor antagonist, into the nucleus accumbens (NAc) on the acquisition of morphine-induced conditioned place preference (CPP) in the rats. Adult male Wistar rats (n=80; 220-250g) were entered in a CPP paradigm. Bilateral microinjections of different doses of SB334867 (1, 3, 10 and 30nM) or TCS OX2 29 (3, 10, 30 and 100nM) into the NAc (0...
November 1, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28866050/orexin-receptors-mediate-long-term-depression-of-excitatory-synaptic-transmission-in-the-spinal-cord-dorsal-horn
#19
Ki Bum Park, Haein Weon
Neuropeptides orexin-A and -B are related to the regulation of sleep/wakefulness and feeding behaviors. Recently, the peptides have also been shown to yield antinociceptive effects in various pain models. However, it is not clear whether orexins are involved in forms of synaptic plasticity, such as long-term potentiation (LTP) and long-term depression (LTD), the increase and the decrease of synaptic efficacy, respectively. In the present study, we examined whether orexin receptor type 1 (OX1) and 2 (OX2) are involved in the induction or maintenance of LTD of excitatory synaptic transmission using transverse spinal cord slices of young rats...
November 1, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28831734/interactions-of-hallucinogens-with-the-glutamatergic-system-permissive-network-effects-mediated-through-cortical-layer-v-pyramidal-neurons
#20
Gerard J Marek
Recordings made from layer V (L5) pyramidal cells of the prefrontal cortex (PFC) and neocortex in rodent slice preparations have shown that serotonin (5-hydroxytryptamine, 5-HT) and serotonergic hallucinogens induce an increase in the frequency of spontaneous excitatory postsynaptic currents (EPSCs) in the apical dendritic field by activating 5-HT2A receptors. Serotonergic hallucinogens induce late EPSCs and increase recurrent network activity when subcortical or mid-cortical regions are stimulated at low frequencies (e...
August 23, 2017: Current Topics in Behavioral Neurosciences
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