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Mack SM, Gomes I, Devi LA. Neuropeptide PEN and Its Receptor GPR83: Distribution, Signaling, and Regulation. ACS Chem Neurosci 2019; 10:1884-1891. [PMID: 30726666 DOI: 10.1021/acschemneuro.8b00559] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Neuropeptides are chemical messengers that act to regulate a number of physiological processes, including feeding, reward, pain, and memory, among others. PEN is one of the most abundant hypothalamic neuropeptides; however, until recently, its target receptor remained unknown. In this Review, we summarize recent developments in research focusing on PEN and its receptor GPR83. We describe the studies leading to the deorphanization of GPR83 as the receptor for PEN. We also describe the signaling mediated by the PEN-GPR83 system, as well as the physiological roles in which PEN-GPR83 has been implicated. As studies have suggested a role for the PEN-GPR83 system in food intake and body weight regulation, as well as in drug addiction and reward disorders, a thorough understanding of this novel neuropeptide-receptor system will help identify novel therapeutic targets to treat pathophysiological conditions involving PEN-GPR83.
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Affiliation(s)
- Seshat M. Mack
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York 10029, United States
| | - Ivone Gomes
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York 10029, United States
| | - Lakshmi A. Devi
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York 10029, United States
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52
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Grapheme-to-Phoneme Conversion with Convolutional Neural Networks. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9061143] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Grapheme-to-phoneme (G2P) conversion is the process of generating pronunciation for words based on their written form. It has a highly essential role for natural language processing, text-to-speech synthesis and automatic speech recognition systems. In this paper, we investigate convolutional neural networks (CNN) for G2P conversion. We propose a novel CNN-based sequence-to-sequence (seq2seq) architecture for G2P conversion. Our approach includes an end-to-end CNN G2P conversion with residual connections and, furthermore, a model that utilizes a convolutional neural network (with and without residual connections) as encoder and Bi-LSTM as a decoder. We compare our approach with state-of-the-art methods, including Encoder-Decoder LSTM and Encoder-Decoder Bi-LSTM. Training and inference times, phoneme and word error rates were evaluated on the public CMUDict dataset for US English, and the best performing convolutional neural network-based architecture was also evaluated on the NetTalk dataset. Our method approaches the accuracy of previous state-of-the-art results in terms of phoneme error rate.
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Busnardo C, Crestani CC, Scopinho AA, Packard BA, Resstel LBM, Correa FMA, Herman JP. Nitrergic neurotransmission in the paraventricular nucleus of the hypothalamus modulates autonomic, neuroendocrine and behavioral responses to acute restraint stress in rats. Prog Neuropsychopharmacol Biol Psychiatry 2019; 90:16-27. [PMID: 30395879 DOI: 10.1016/j.pnpbp.2018.11.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 10/19/2018] [Accepted: 11/01/2018] [Indexed: 01/22/2023]
Abstract
We investigated the involvement of nitrergic neurotransmission within the paraventricular nucleus of the hypothalamus (PVN) in modulation of local neuronal activation, autonomic and neuroendocrine responses and behavioral consequences of acute restraint stress in rats. Bilateral microinjections of the selective neuronal nitric oxide (NO) synthase (nNOS) inhibitor Nw-Propyl-L-arginine (NPLA) or the NO scavenger carboxy-PTIO into the PVN reduced arterial pressure and heart rate increases, as well as the fall in cutaneous tail temperature induced by restraint stress. PVN injection of either NPLA or carboxy-PTIO also inhibited restraint-induced increases in anxiety-related behaviors in the elevated plus-maze 24 h later. Local microinjection of NPLA or carboxy-PTIO into the PVN reduced the number of c-fos-immunoreactive neurons in the dorsal parvocellular, ventromedial, medial parvocellular and lateral magnocelllular portions of the PVN in animals subjected to restraint stress. However, neither NPLA nor carboxy-PTIO into the PVN affected restraint-induced increases in plasma corticosterone concentration. The present results indicate that PVN nitrergic neurotransmission acting via nNOS activation has a facilitatory influence on autonomic responses to acute restraint and the delayed emotional consequences of restraint stress. Our results also provide evidence of a prominent role of local nitrergic neurotransmission in PVN neuronal activation during stress.
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Affiliation(s)
- Cristiane Busnardo
- Departments of Pharmacology of the School of Medicine of Ribeirão Preto, University of São Paulo, 14049-900 Ribeirão Preto, São Paulo, Brazil.
| | - Carlos C Crestani
- Department of Natural Active Principles and Toxicology, School of Pharmaceutical Sciences, UNESP - São Paulo State University, Araraquara 14800-903, Brazil
| | - América A Scopinho
- Departments of Pharmacology of the School of Medicine of Ribeirão Preto, University of São Paulo, 14049-900 Ribeirão Preto, São Paulo, Brazil
| | - Benjamin A Packard
- Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati, Cincinnati, OH, USA
| | - Leonardo B M Resstel
- Departments of Pharmacology of the School of Medicine of Ribeirão Preto, University of São Paulo, 14049-900 Ribeirão Preto, São Paulo, Brazil
| | - Fernando M A Correa
- Departments of Pharmacology of the School of Medicine of Ribeirão Preto, University of São Paulo, 14049-900 Ribeirão Preto, São Paulo, Brazil
| | - James P Herman
- Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati, Cincinnati, OH, USA
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Initial findings of striatum tripartite model in OCD brain samples based on transcriptome analysis. Sci Rep 2019; 9:3086. [PMID: 30816141 PMCID: PMC6395771 DOI: 10.1038/s41598-019-38965-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 12/17/2018] [Indexed: 11/22/2022] Open
Abstract
Obsessive-compulsive disorder (OCD) is a psychiatric disorder characterized by obsessions and/or compulsions. Different striatal subregions belonging to the cortico-striato-thalamic circuitry (CSTC) play an important role in the pathophysiology of OCD. The transcriptomes of 3 separate striatal areas (putamen (PT), caudate nucleus (CN) and accumbens nucleus (NAC)) from postmortem brain tissue were compared between 6 OCD and 8 control cases. In addition to network connectivity deregulation, different biological processes are specific to each striatum region according to the tripartite model of the striatum and contribute in various ways to OCD pathophysiology. Specifically, regulation of neurotransmitter levels and presynaptic processes involved in chemical synaptic transmission were shared between NAC and PT. The Gene Ontology terms cellular response to chemical stimulus, response to external stimulus, response to organic substance, regulation of synaptic plasticity, and modulation of synaptic transmission were shared between CN and PT. Most genes harboring common and/or rare variants previously associated with OCD that were differentially expressed or part of a least preserved coexpression module in our study also suggest striatum subregion specificity. At the transcriptional level, our study supports differences in the 3 circuit CSTC model associated with OCD.
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Brown MD, Hall JR, Schoenfisch MH. A direct and selective electrochemical hydrogen sulfide sensor. Anal Chim Acta 2019; 1045:67-76. [PMID: 30454574 PMCID: PMC6641862 DOI: 10.1016/j.aca.2018.08.054] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 08/17/2018] [Accepted: 08/28/2018] [Indexed: 01/23/2023]
Abstract
Continuous, in situ detection of hydrogen sulfide (H2S) in biological milieu is made possible with electrochemical methods, but direct amperometry is constrained by the generation of elemental sulfur as an oxidative byproduct. Deposition of a sulfur layer passivates the working electrode, reducing sensitivity and causing performance variability. Herein, we report on the use of a surface preconditioning procedure to deposit elemental sulfur on a glassy carbon electrode prior to measurement and evaluate performance with common analytical metrics. The lack of traditional anti-poisoning techniques (e.g. redox mediators, cleaning pulses) also allowed for facile surface modification with electropolymerized films. For the first time, a series of electropolymerized films were characterized for their H2S permselective behavior against common biological interferents. Highly selective, film-modified electrodes were then evaluated for their anti-biofouling ability in simulated wound fluid. The final optimized electrode was capable of measuring H2S with a low detection limit (i.e., <100 nM) and ∼80% of its initial sensitivity in proteinaceous media.
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Affiliation(s)
- Micah D Brown
- Department of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, NC, 27599, United States
| | - Jackson R Hall
- Department of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, NC, 27599, United States
| | - Mark H Schoenfisch
- Department of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, NC, 27599, United States.
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Succinimidyl (3-[(benzyloxy)carbonyl]-5-oxo-1,3-oxazolidin-4-yl)acetate on a triazole-bonded phase for the separation of dl-amino-acid enantiomers and the mass-spectrometric determination of chiral amino acids in rat plasma. J Chromatogr A 2019; 1585:131-137. [DOI: 10.1016/j.chroma.2018.11.061] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 10/18/2018] [Accepted: 11/22/2018] [Indexed: 12/23/2022]
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Yan Y, Chen L, Liu R, Zheng Y, Wang S. A turn-on fluorescent probe with a dansyl fluorophore for hydrogen sulfide sensing. RSC Adv 2019; 9:27652-27658. [PMID: 35529213 PMCID: PMC9070855 DOI: 10.1039/c9ra04790e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 08/21/2019] [Indexed: 12/21/2022] Open
Abstract
Hydrogen sulfide (H2S) is a biologically relevant molecule that has been newly identified as a gasotransmitter and is also a toxic gaseous pollutant. In this study, we report on a metal complex fluorescent probe to achieve the sensitive detection of H2S in a fluorescent “turn-on” mode. The probe bears a dansyl fluorophore with multidentate ligands for coordination with copper ions. The fluorescent “turn-on” mode is facilitated by the strong bonding between H2S and the Cu(ii) ions to form insoluble copper sulfide, which leads to the release of a strongly fluorescent product. The H2S limit of detection (LOD) for the proposed probe is estimated to be 11 nM in the aqueous solution, and the utilization of the probe is demonstrated for detecting H2S in actual lake and mineral water samples with good reproducibility. Furthermore, we designed detector vials and presented their successful application for the visual detection of gaseous H2S. H2S turn on the fluorescence of DNS–Cu complex probe.![]()
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Affiliation(s)
| | | | | | | | - Suhua Wang
- School of Environmental Science and Engineering
- North China Electric Power University
- Beijing 102206
- China
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58
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Assessing plausibility of scientific claims to support high-quality content in digital collections. INTERNATIONAL JOURNAL ON DIGITAL LIBRARIES 2018. [DOI: 10.1007/s00799-018-0256-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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59
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Choi EK, Park SH, Lim JA, Hong SW, Kwak KH, Park SS, Lim DG, Jung H. Beneficial Role of Hydrogen Sulfide in Renal Ischemia Reperfusion Injury in Rats. Yonsei Med J 2018; 59:960-967. [PMID: 30187703 PMCID: PMC6127435 DOI: 10.3349/ymj.2018.59.8.960] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 07/30/2018] [Accepted: 08/02/2018] [Indexed: 12/25/2022] Open
Abstract
PURPOSE Hydrogen sulfide (H₂S) is an endogenous gaseous molecule with important physiological roles. It is synthesized from cysteine by cystathionine γ-lyase (CGL) and cystathionine β-synthase (CBS). The present study examined the benefits of exogenous H₂S on renal ischemia reperfusion (IR) injury, as well as the effects of CGL or CBS inhibition. Furthermore, we elucidated the mechanism underlying the action of H₂S in the kidneys. MATERIALS AND METHODS Thirty male Sprague-Dawley rats were randomly assigned to five groups: a sham, renal IR control, sodium hydrosulfide (NaHS) treatment, H₂S donor, and CGL or CBS inhibitor administration group. Levels of blood urea nitrogen (BUN), serum creatinine (Cr), renal tissue malondialdehyde (MDA), and superoxide dismutase (SOD) were estimated. Histological changes, apoptosis, and expression of mitogen-activated protein kinase (MAPK) family members (extracellular signal-regulated kinase, c-Jun N-terminal kinase, and p38) were also evaluated. RESULTS NaHS attenuated serum BUN and Cr levels, as well as histological damage caused by renal IR injury. Administration of NaHS also reduced oxidative stress as evident from decreased MDA, preserved SOD, and reduced apoptotic cells. Additionally, NaHS prevented renal IR-induced MAPK phosphorylation. The CGL or CBS group showed increased MAPK family activity; however, there was no significant difference in the IR control group. CONCLUSION Exogenous H₂S can mitigate IR injury-led renal damage. The proposed beneficial effect of H₂S is, in part, because of the anti-oxidative stress associated with modulation of the MAPK signaling pathways.
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Affiliation(s)
- Eun Kyung Choi
- Department of Anesthesiology and Pain Medicine, Yeungnam University College of Medicine, Daegu, Korea
| | - Sol Hee Park
- Department of Anesthesiology and Pain Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Jung A Lim
- Department of Anesthesiology and Pain Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Seong Wook Hong
- Department of Anesthesiology and Pain Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Kyung Hwa Kwak
- Department of Anesthesiology and Pain Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Sung Sik Park
- Department of Anesthesiology and Pain Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Dong Gun Lim
- Department of Anesthesiology and Pain Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Hoon Jung
- Department of Anesthesiology and Pain Medicine, School of Medicine, Kyungpook National University, Daegu, Korea.
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Christie AE, Stanhope ME, Gandler HI, Lameyer TJ, Pascual MG, Shea DN, Yu A, Dickinson PS, Hull JJ. Molecular characterization of putative neuropeptide, amine, diffusible gas and small molecule transmitter biosynthetic enzymes in the eyestalk ganglia of the American lobster, Homarus americanus. INVERTEBRATE NEUROSCIENCE 2018; 18:12. [PMID: 30276482 DOI: 10.1007/s10158-018-0216-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 09/21/2018] [Indexed: 02/03/2023]
Abstract
The American lobster, Homarus americanus, is a model for investigating the neuromodulatory control of physiology and behavior. Prior studies have shown that multiple classes of chemicals serve as locally released/circulating neuromodulators/neurotransmitters in this species. Interestingly, while many neuroactive compounds are known from Homarus, little work has focused on identifying/characterizing the enzymes responsible for their biosynthesis, despite the fact that these enzymes are key components for regulating neuromodulation/neurotransmission. Here, an eyestalk ganglia-specific transcriptome was mined for transcripts encoding enzymes involved in neuropeptide, amine, diffusible gas and small molecule transmitter biosynthesis. Using known Drosophila melanogaster proteins as templates, transcripts encoding putative Homarus homologs of peptide precursor processing (signal peptide peptidase, prohormone processing protease and carboxypeptidase) and immature peptide modifying (glutaminyl cyclase, tyrosylprotein sulfotransferase, protein disulfide isomerase, peptidylglycine-α-hydroxylating monooxygenase and peptidyl-α-hydroxyglycine-α-amidating lyase) enzymes were identified in the eyestalk assembly. Similarly, transcripts encoding full complements of the enzymes responsible for dopamine [tryptophan-phenylalanine hydroxylase (TPH), tyrosine hydroxylase and DOPA decarboxylase (DDC)], octopamine (TPH, tyrosine decarboxylase and tyramine β-hydroxylase), serotonin (TPH or tryptophan hydroxylase and DDC) and histamine (histidine decarboxylase) biosynthesis were identified from the eyestalk ganglia, as were those responsible for the generation of the gases nitric oxide (nitric oxide synthase) and carbon monoxide (heme oxygenase), and the small molecule transmitters acetylcholine (choline acetyltransferase), glutamate (glutaminase) and GABA (glutamic acid decarboxylase). The presence and identity of the transcriptome-derived transcripts were confirmed using RT-PCR. The data presented here provide a foundation for future gene-based studies of neuromodulatory control at the level of neurotransmitter/modulator biosynthesis in Homarus.
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Affiliation(s)
- Andrew E Christie
- Békésy Laboratory of Neurobiology, Pacific Biosciences Research Center, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, 1993 East-West Road, Honolulu, HI, 96822, USA.
| | - Meredith E Stanhope
- Department of Biology, Bowdoin College, 6500 College Station, Brunswick, ME, 04011, USA
| | - Helen I Gandler
- Department of Biology, Bowdoin College, 6500 College Station, Brunswick, ME, 04011, USA
| | - Tess J Lameyer
- Department of Biology, Bowdoin College, 6500 College Station, Brunswick, ME, 04011, USA
| | - Micah G Pascual
- Békésy Laboratory of Neurobiology, Pacific Biosciences Research Center, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, 1993 East-West Road, Honolulu, HI, 96822, USA
| | - Devlin N Shea
- Department of Biology, Bowdoin College, 6500 College Station, Brunswick, ME, 04011, USA
| | - Andy Yu
- Békésy Laboratory of Neurobiology, Pacific Biosciences Research Center, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, 1993 East-West Road, Honolulu, HI, 96822, USA
| | - Patsy S Dickinson
- Department of Biology, Bowdoin College, 6500 College Station, Brunswick, ME, 04011, USA
| | - J Joe Hull
- Pest Management and Biocontrol Research Unit, US Arid Land Agricultural Research Center, USDA Agricultural Research Services, Maricopa, AZ, 85138, USA
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Ghosh A, Das S, Sarkar HS, Kundu S, Sahoo P. Consumption of H 2S from Our Daily Diet: Determination by a Simple Chemosensing Method. ACS OMEGA 2018; 3:11617-11623. [PMID: 30320267 PMCID: PMC6173501 DOI: 10.1021/acsomega.8b01751] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 09/10/2018] [Indexed: 05/03/2023]
Abstract
A unique method has been developed for comparative analysis of H2S produced from food samples from our daily diet, both qualitatively and quantitatively. The selective detection of H2S has been executed by introducing a simple chemodosimeter (PN-N 3 ) that gives response on the basis of intramolecular charge transfer. UV-vis, fluorimetric, and NMR titrations were performed to demonstrate the sensing mechanism and electronic environment of PN-N 3 in the presence of H2S. Density functional theory calculations were performed to validate the mechanism of azide (PN-N 3 ) reduction to amine (PN-NH 2 ) by the strong reducing power of H2S. The potentiality of this chemosensing method is that it could be treated as a simple, less-time-consuming, and cost-effective method for determining H2S in biological samples in the nanomolar range.
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Ma Y, Zhang C, Yang P, Li X, Tong L, Huang F, Yue J, Tang B. A CuO-functionalized NMOF probe with a tunable excitation wavelength for selective detection and imaging of H 2S in living cells. NANOSCALE 2018; 10:15793-15798. [PMID: 30101269 DOI: 10.1039/c8nr03651a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Recently, fluorescent nanoscale metal-organic frameworks (NMOFs) have been proven to be useful probes for the detection and imaging of active biomolecules in living cells. However, the excitation wavelengths of these NMOF fluorescence probes are mostly in the ultraviolet region, which unavoidably results in reduced cell activity, limited tissue penetration depth and inevitable biological background interference. Herein, to solve this problem, a CuO functionalized NMOF probe with a tunable excitation wavelength based on Förster resonance energy transfer (FRET) for selective detection and imaging of the third important gaseous signaling molecule hydrogen sulfide (H2S) in living cells as an example is presented. In the energy transfer system, NMOF confines the luminophore organic dye thiazole orange within its intrinsic porous matrix as the energy donor, in which the excitation wavelength of the NMOF can be tuned simply from UV to Vis through the choice of dye molecules, and the H2S-responding site copper oxide nanoparticle (CuO NP) is the acceptor. After the surface functionalization of CuO NPs onto the NMOF, the fluorescence of the NMOF can be efficiently quenched based on the FRET. When H2S appeared, the fluorescence of the nanoprobe is recovered due to the interruption of FRET. This facile yet powerful strategy not only provides an instantaneous fluorescence probe for selective H2S detection in living cells but also offers a valuable approach for using porous NMOFs to sense other biological species.
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Affiliation(s)
- Yu Ma
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China.
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63
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Fujii N, Takata T, Fujii N, Aki K, Sakaue H. D-Amino acids in protein: The mirror of life as a molecular index of aging. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2018. [DOI: 10.1016/j.bbapap.2018.03.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Kaushik R, Sakla R, Ghosh A, Selvan G, Selvakumar PM, Jose DA. Selective Detection of H 2S by Copper Complex Embedded in Vesicles through Metal Indicator Displacement Approach. ACS Sens 2018; 3:1142-1148. [PMID: 29856208 DOI: 10.1021/acssensors.8b00174] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A new approach for the detection of hydrogen sulfide (H2S) was constructed within vesicles comprising phospholipids and amphiphilic copper complex as receptor. 1,2-Distearoyl- sn-glycero-3-phosphocholine (DSPC) vesicles with embedded metal complex receptor (1.Cu) sites have been prepared. The vesicles selectively respond to H2S in a buffered solution and show colorimetric as well as spectral transformation. Other analytes such as reactive sulfur species, reactive nitrogen species, biological phosphates, and other anions failed to induce changes. The H2S detection is established through a metal indicator displacement (MIDA) process, where Eosin-Y (EY) was employed as an indicator. Fluorescence, UV-vis spectroscopy, and the naked eye as the signal readout studies confirm the high selectivity, sensitivity, and lower detection limit of the vesicular receptor. The application of vesicular receptors for real sample analysis was also confirmed by fluorescence live cell imaging.
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Affiliation(s)
- Rahul Kaushik
- Department of Chemistry, National Institute of Technology (NIT) Kurukshetra, Kurukshetra-136119, Haryana, India
| | - Rahul Sakla
- Department of Chemistry, National Institute of Technology (NIT) Kurukshetra, Kurukshetra-136119, Haryana, India
| | - Amrita Ghosh
- Department of Chemistry, National Institute of Technology (NIT) Kurukshetra, Kurukshetra-136119, Haryana, India
| | - G.Tamil Selvan
- Department of Science & Humanities, Karunya Institute of Technology & Sciences, Coimbatore 641114, Tamil Nadu, India
| | - P. Mosae Selvakumar
- Department of Science & Humanities, Karunya Institute of Technology & Sciences, Coimbatore 641114, Tamil Nadu, India
| | - D. Amilan Jose
- Department of Chemistry, National Institute of Technology (NIT) Kurukshetra, Kurukshetra-136119, Haryana, India
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Umbreen S, Lubega J, Cui B, Pan Q, Jiang J, Loake GJ. Specificity in nitric oxide signalling. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:3439-3448. [PMID: 29767796 DOI: 10.1093/jxb/ery184] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 05/07/2018] [Indexed: 05/20/2023]
Abstract
Reactive nitrogen species (RNS) and their cognate redox signalling networks pervade almost all facets of plant growth, development, immunity, and environmental interactions. The emerging evidence implies that specificity in redox signalling is achieved by a multilayered molecular framework. This encompasses the production of redox cues in the locale of the given protein target and protein tertiary structures that convey the appropriate local chemical environment to support redox-based, post-translational modifications (PTMs). Nascent nitrosylases have also recently emerged that mediate the formation of redox-based PTMs. Reversal of these redox-based PTMs, rather than their formation, is also a major contributor of signalling specificity. In this context, the activities of S-nitrosoglutathione (GSNO) reductase and thioredoxin h5 (Trxh5) are a key feature. Redox signalling specificity is also conveyed by the unique chemistries of individual RNS which is overlaid on the structural constraints imposed by tertiary protein structure in gating access to given redox switches. Finally, the interactions between RNS and ROS (reactive oxygen species) can also indirectly establish signalling specificity through shaping the formation of appropriate redox cues. It is anticipated that some of these insights might function as primers to initiate their future translation into agricultural, horticultural, and industrial biological applications.
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Affiliation(s)
- Saima Umbreen
- Institute of Molecular Plant Sciences, University of Edinburgh, Edinburgh, UK
| | - Jibril Lubega
- Institute of Molecular Plant Sciences, University of Edinburgh, Edinburgh, UK
| | - Beimi Cui
- Key Laboratory of Biotechnology for Medicinal Plants, Jiangsu Normal University, Xuzhou, PR China
- Jiangsu Normal University-Edinburgh University, Centre for Transformative Biotechnology of Medicinal and Food Plants, Jiangsu Normal University, Xuzhou, PR China
| | - Qiaona Pan
- Key Laboratory of Biotechnology for Medicinal Plants, Jiangsu Normal University, Xuzhou, PR China
- Jiangsu Normal University-Edinburgh University, Centre for Transformative Biotechnology of Medicinal and Food Plants, Jiangsu Normal University, Xuzhou, PR China
| | - Jihong Jiang
- Key Laboratory of Biotechnology for Medicinal Plants, Jiangsu Normal University, Xuzhou, PR China
- Jiangsu Normal University-Edinburgh University, Centre for Transformative Biotechnology of Medicinal and Food Plants, Jiangsu Normal University, Xuzhou, PR China
| | - Gary J Loake
- Institute of Molecular Plant Sciences, University of Edinburgh, Edinburgh, UK
- Jiangsu Normal University-Edinburgh University, Centre for Transformative Biotechnology of Medicinal and Food Plants, Jiangsu Normal University, Xuzhou, PR China
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Steiger AK, Zhao Y, Pluth MD. Emerging Roles of Carbonyl Sulfide in Chemical Biology: Sulfide Transporter or Gasotransmitter? Antioxid Redox Signal 2018; 28:1516-1532. [PMID: 28443679 PMCID: PMC5930797 DOI: 10.1089/ars.2017.7119] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Accepted: 04/16/2017] [Indexed: 12/19/2022]
Abstract
SIGNIFICANCE Carbonyl sulfide (COS) is the most prevalent sulfur-containing gas in the Earth's atmosphere, and it plays important roles in the global sulfur cycle. COS has been implicated in origin of life peptide ligation, is the primary energy source for certain bacteria, and has been detected in mammalian systems. Despite this long and intertwined history with terrestrial biology, limited attention has focused on potential roles of COS as a biological mediator. Recent Advances: Although bacterial COS production is well documented, definitive sources of mammalian COS production have not been confirmed. Enzymatic COS consumption in mammals, however, is well documented and occurs primarily by carbonic anhydrase (CA)-mediated conversion to hydrogen sulfide (H2S). COS has been detected in ex vivo mammalian tissue culture, as well as in exhaled breath as a potential biomarker for different disease pathologies, including cystic fibrosis and organ rejection. Recently, chemical tools for COS delivery have emerged and are poised to advance future investigations into the role of COS in different biological contexts. CRITICAL ISSUES Possible roles of COS as an important biomolecule, gasotransmitter, or sulfide transport intermediate remain to be determined. Key advances in both biological and chemical tools for COS research are needed to further investigate these questions. FUTURE DIRECTIONS Further evaluation of the biological roles of COS and disentangling the chemical biology of COS from that of H2S are needed to further elucidate these interactions. Chemical tools for COS delivery and modulation may provide a first avenue of investigative tools to answer many of these questions. Antioxid. Redox Signal. 28, 1516-1532.
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Affiliation(s)
- Andrea K Steiger
- Department of Chemistry and Biochemistry, Institute of Molecular Biology, Materials Science Institute, University of Oregon , Eugene, Oregon
| | - Yu Zhao
- Department of Chemistry and Biochemistry, Institute of Molecular Biology, Materials Science Institute, University of Oregon , Eugene, Oregon
| | - Michael D Pluth
- Department of Chemistry and Biochemistry, Institute of Molecular Biology, Materials Science Institute, University of Oregon , Eugene, Oregon
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Classifying Wheat Hyperspectral Pixels of Healthy Heads and Fusarium Head Blight Disease Using a Deep Neural Network in the Wild Field. REMOTE SENSING 2018. [DOI: 10.3390/rs10030395] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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68
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Makino R, Obata Y, Tsubaki M, Iizuka T, Hamajima Y, Kato-Yamada Y, Mashima K, Shiro Y. Mechanistic Insights into the Activation of Soluble Guanylate Cyclase by Carbon Monoxide: A Multistep Mechanism Proposed for the BAY 41-2272 Induced Formation of 5-Coordinate CO-Heme. Biochemistry 2018; 57:1620-1631. [PMID: 29461815 DOI: 10.1021/acs.biochem.7b01240] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Soluble guanylate cyclase (sGC) is a heme-containing enzyme that catalyzes cGMP production upon sensing NO. While the CO adduct, sGC-CO, is much less active, the allosteric regulator BAY 41-2272 stimulates the cGMP productivity to the same extent as that of sGC-NO. The stimulatory effect has been thought to be likely associated with Fe-His bond cleavage leading to 5-coordinate CO-heme, but the detailed mechanism remains unresolved. In this study, we examined the mechanism under the condition including BAY 41-2272, 2'-deoxy-3'-GMP and foscarnet. The addition of these effectors caused the original 6-coordinate CO-heme to convert to an end product that was an equimolar mixture of a 5- and a new 6-coordinate CO-heme, as assessed by IR spectral measurements. The two types of CO-hemes in the end product were further confirmed by CO dissociation kinetics. Stopped-flow measurements under the condition indicated that the ferrous sGC bound CO as two reversible steps, where the primary step was assigned to the full conversion of the ferrous enzyme to the 6-coordinate CO-heme, and subsequently followed by the slower second step leading a partial conversion of the 6-coordinate CO-heme to the 5-coordinate CO-heme. The observed rates for both steps linearly depended on CO concentrations. The unexpected CO dependence of the rates in the second step supports a multistep mechanism, in which the 5-coordinate CO-heme is led by CO release from a putative bis-carbonyl intermediate that is likely provided by the binding of a second CO to the 6-coordinate CO-heme. This mechanism provides a new aspect on the activation of sGC by CO.
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Affiliation(s)
- Ryu Makino
- Department of Life Science, College of Science , Rikkyo University , Nishi-ikebukuro 3-34-1 , Toshima-ku, Tokyo 171-8501 , Japan
| | - Yuji Obata
- Department of Life Science, College of Science , Rikkyo University , Nishi-ikebukuro 3-34-1 , Toshima-ku, Tokyo 171-8501 , Japan
| | - Motonari Tsubaki
- Department of Chemistry, Graduate School of Science , Kobe University , Kobe , Hyogo 657-8501 , Japan
| | - Tetsutaro Iizuka
- RIKEN Harima Institute/Spring8 , 1-1-1 Kouto , Mikazuki-cho, Sayo-gun , Hyogo 679-5148 , Japan
| | - Yuki Hamajima
- Department of Life Science, College of Science , Rikkyo University , Nishi-ikebukuro 3-34-1 , Toshima-ku, Tokyo 171-8501 , Japan
| | - Yasuyuki Kato-Yamada
- Department of Life Science, College of Science , Rikkyo University , Nishi-ikebukuro 3-34-1 , Toshima-ku, Tokyo 171-8501 , Japan
| | - Keisuke Mashima
- Department of Life Science, College of Science , Rikkyo University , Nishi-ikebukuro 3-34-1 , Toshima-ku, Tokyo 171-8501 , Japan
| | - Yoshitsugu Shiro
- Graduate School of Life Science , University of Hyogo , 3-2-1 Kouto , Kamigori-cho, Ako-gun , Hyogo 678-1297 , Japan
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Padovan-Neto FE, West AR. Regulation of Striatal Neuron Activity by Cyclic Nucleotide Signaling and Phosphodiesterase Inhibition: Implications for the Treatment of Parkinson's Disease. ADVANCES IN NEUROBIOLOGY 2018; 17:257-283. [PMID: 28956336 DOI: 10.1007/978-3-319-58811-7_10] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Cyclic nucleotide phosphodiesterase (PDE) enzymes catalyze the hydrolysis and inactivation of cyclic nucleotides (cAMP/cGMP) in the brain. Several classes of PDE enzymes with distinct tissue distributions, cyclic nucleotide selectivity, and regulatory factors are highly expressed in brain regions subserving cognitive and motor processes known to be disrupted in neurodegenerative diseases such as Parkinson's disease (PD). Furthermore, small-molecule inhibitors of several different PDE family members alter cyclic nucleotide levels and favorably enhance motor performance and cognition in animal disease models. This chapter will explore the roles and therapeutic potential of non-selective and selective PDE inhibitors on neural processing in fronto-striatal circuits in normal animals and models of DOPA-induced dyskinesias (LIDs) associated with PD. The impact of selective PDE inhibitors and augmentation of cAMP and cGMP signaling on the membrane excitability of striatal medium-sized spiny projection neurons (MSNs) will be discussed. The effects of cyclic nucleotide signaling and PDE inhibitors on synaptic plasticity of striatonigral and striatopallidal MSNs will be also be reviewed. New data on the efficacy of PDE10A inhibitors for reversing behavioral and electrophysiological correlates of L-DOPA-induced dyskinesias in a rat model of PD will also be presented. Together, these data will highlight the potential of novel PDE inhibitors for treatment of movement disorders such as PD which are associated with abnormal corticostriatal transmission.
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Affiliation(s)
- Fernando E Padovan-Neto
- Department of Neuroscience, Rosalind Franklin University of Medicine and Science, 3333 Green Bay Road, North Chicago, IL, 60064, USA.
| | - Anthony R West
- Department of Neuroscience, Rosalind Franklin University of Medicine and Science, 3333 Green Bay Road, North Chicago, IL, 60064, USA.
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71
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Ha S, Kim I, Takata T, Kinouchi T, Isoyama M, Suzuki M, Fujii N. Identification of ᴅ-amino acid-containing peptides in human serum. PLoS One 2017; 12:e0189972. [PMID: 29253022 PMCID: PMC5734745 DOI: 10.1371/journal.pone.0189972] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 12/05/2017] [Indexed: 12/12/2022] Open
Abstract
Biologically uncommon d-aspartate (d-Asp) residues have been shown to accumulate in proteins associated with age-related human disorders, such as cataract and Alzheimer disease. Such d-Asp-containing proteins are unlikely to be broken down completely because metabolic enzymes recognize only proteins or peptides composed exclusively of l-amino acids. Therefore, undigested d-Asp-containing peptides may exist in blood and, if detectable, may be a useful biomarker for associated diseases. In this study, we investigated d-amino acid-containing peptides in adult human serum by a qualitative d-amino acid analysis based on a diastereomer method and LC-MS/MS method. As a result, two d-Asp-containing peptides were detected in serum, both derived from the fibrinogen β-chain, a glycoprotein that helps in the formation of blood clots. One of the peptides was fibrinopeptide B, which prevents fibrinogen from forming polymers of fibrin, and the other was same peptide with C-terminal Arginine missing. To our knowledge, this is the first report of the presence of d-amino acid-containing peptides in serum and the approach described will provide a new direction on the serum proteome and fragmentome.
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Affiliation(s)
- Seongmin Ha
- Graduate School of Science, Kyoto University, Kyoto, Japan
| | - Ingu Kim
- Research Reactor Institute, Kyoto University, Osaka, Japan
| | - Takumi Takata
- Research Reactor Institute, Kyoto University, Osaka, Japan
| | - Tadatoshi Kinouchi
- Graduate School of Science, Kyoto University, Kyoto, Japan
- Research Reactor Institute, Kyoto University, Osaka, Japan
| | | | - Minoru Suzuki
- Research Reactor Institute, Kyoto University, Osaka, Japan
| | - Noriko Fujii
- Research Reactor Institute, Kyoto University, Osaka, Japan
- * E-mail:
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72
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Phosphorogenic sensors for biothiols derived from cyclometalated iridium(III) polypyridine complexes containing a dinitrophenyl ether moiety. J Inorg Biochem 2017; 177:412-422. [DOI: 10.1016/j.jinorgbio.2017.08.037] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Revised: 07/19/2017] [Accepted: 08/22/2017] [Indexed: 12/23/2022]
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73
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Wang Q, Mergia E, Koesling D, Mittmann T. Nitric oxide/cGMP signaling via guanylyl cyclase isoform 1 modulates glutamate and GABA release in somatosensory cortex of mice. Neuroscience 2017; 360:180-189. [PMID: 28782641 DOI: 10.1016/j.neuroscience.2017.07.063] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 07/25/2017] [Accepted: 07/26/2017] [Indexed: 11/24/2022]
Abstract
In hippocampus, two guanylyl cyclases (NO-GC1 and NO-GC2) are involved in the transduction of the effects of nitric oxide (NO) on synaptic transmission. However, the respective roles of the NO-GC isoforms on synaptic transmission are less clear in other regions of the brain. In the present study, we used knock-out mice deficient for the NO-GC1 isoform (NO-GC1 KO) to analyze its role in the glutamatergic and GABAergic neurotransmission at pyramidal neurons in layers II/III of somatosensory cortex. NO-GC1 KO slices revealed reduced frequencies of miniature excitatory- and inhibitory-postsynaptic currents, increased paired-pulse ratios and decreased input-output curves of evoked signals, which indicated the reduction of glutamate and GABA release in NO-GC1 KO mice. The functional changes in NO-GC1 KO mice were caused by the lack of cGMP as they were rescued to WT-like levels by the cGMP analog, 8-Br-PET-cGMP and conversely, mimicked by the NO-GC inhibitor, ODQ, in WT slices. In search of a cGMP target, two blockers of hyperpolarization-activated cyclic nucleotide-gated (HCN) channels (ZD7288 and DK-AH269) reduced glutamate release in WT to the level of NO-GC1 KO mice suggesting HCN channels as possible effectors for presynaptic cGMP enhancing the glutamate release probability. By blocking postsynaptic NMDA receptors, the NMDA receptor-dependent NO signal was shown to be linked to the effect of NO-GC1 on presynaptic GABA release. Of note, the balance between glutamatergic and GABAergic inputs at individual synapses remained unaltered in the NO-GC1 KO mice. In sum, our results indicate a role for cGMP generated by presynaptic localized NO-GC1 to adjust inhibitory and excitatory inputs at individual synapses in the somatosensory cortex.
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Affiliation(s)
- Qi Wang
- Institute of Physiology, UMC of the Johannes Gutenberg University Mainz, Duesbergweg 6, 55128 Mainz, Germany
| | - Evanthia Mergia
- Institute of Pharmacology, Ruhr-University Bochum, 44780 Bochum, Germany
| | - Doris Koesling
- Institute of Pharmacology, Ruhr-University Bochum, 44780 Bochum, Germany
| | - Thomas Mittmann
- Institute of Physiology, UMC of the Johannes Gutenberg University Mainz, Duesbergweg 6, 55128 Mainz, Germany.
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74
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Kuang Y, Chen S, Long Y. Highly sensitive and selective determination of hydrogen sulfide by resonance light scattering technique based on silver nanoparticles. Anal Bioanal Chem 2017; 409:4001-4008. [PMID: 28417178 DOI: 10.1007/s00216-017-0343-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Revised: 03/17/2017] [Accepted: 03/28/2017] [Indexed: 10/19/2022]
Abstract
We have developed a green approach to prepare DNA-templated silver nanoparticles (Ag-NPs) from the direct reaction between Ag+ and ascorbic acid in the presence of DNA and sodium hydroxide. The Ag-NPs showed strong resonance light scattering (RLS) intensity property. Then, the interaction between hydrogen sulfide (H2S) and Ag-NPs was studied by measuring their RLS spectra. The results showed that there is a strong interaction between Ag-NPs and H2S, which resulted in a decrease in the size of Ag-NPs and a decrease in the RLS intensity of the Ag-NPs solution at the wavelength of 467 nm. The results demonstrated that the RLS technique offers a sensitive and simple tool for investigating the interaction between Ag-NPs and H2S, which can be applied to detect H2S with high sensitivity and selectivity without complex readout equipment. The linear range for H2S determination was found to be the range from 5.0 × 10-9 to 1.0 × 10-7 mol L-1, and the detection limit (3σ/k) was 2.8 × 10-9 mol L-1. Moreover, the proposed method was applied for the determination of H2S in natural water samples with satisfactory results. Graphical abstract The application of Ag-NPs in H2S detection.
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Affiliation(s)
- Yangfang Kuang
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, 411201, China
| | - Shu Chen
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, 411201, China
| | - Yunfei Long
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, 411201, China.
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75
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Yang S, Yuan Y, Jiang W, Ren L, Deng H, Bouchard LS, Zhou X, Liu M. Hyperpolarized 129
Xe Magnetic Resonance Imaging Sensor for H2
S. Chemistry 2017; 23:7648-7652. [DOI: 10.1002/chem.201605768] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Revised: 02/21/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Shengjun Yang
- Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics; Chinese Academy of Sciences; Wuhan 430071 China
| | - Yaping Yuan
- Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics; Chinese Academy of Sciences; Wuhan 430071 China
| | - Weiping Jiang
- Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics; Chinese Academy of Sciences; Wuhan 430071 China
| | - Lili Ren
- Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics; Chinese Academy of Sciences; Wuhan 430071 China
| | - He Deng
- Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics; Chinese Academy of Sciences; Wuhan 430071 China
| | - Louis S. Bouchard
- Department of Chemistry and Biochemistry, California NanoSystems Institute, The Molecular Biology Institute; University of California; Los Angeles CA 90095 USA
| | - Xin Zhou
- Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics; Chinese Academy of Sciences; Wuhan 430071 China
| | - Maili Liu
- Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics; Chinese Academy of Sciences; Wuhan 430071 China
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76
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Zhu YC, Wang Q, Zhang LB, Zhao WW, Xu JJ, Chen HY. Photoelectrochemical Probing of Cellular Interfaces and Evaluation of Cellular H2
S Production Based on In Situ-Generated CdS-Enhanced TiO2
Nanotube Heterostructures. ChemElectroChem 2017. [DOI: 10.1002/celc.201700149] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yuan-Cheng Zhu
- State Key Laboratory of Analytical Chemistry for Life Science and Collaborative Innovation Center of Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing, Jiangsu 210023 P.R. China
| | - Qian Wang
- State Key Laboratory of Analytical Chemistry for Life Science and Collaborative Innovation Center of Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing, Jiangsu 210023 P.R. China
| | - Li-Bin Zhang
- State Key Laboratory of Analytical Chemistry for Life Science and Collaborative Innovation Center of Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing, Jiangsu 210023 P.R. China
| | - Wei-Wei Zhao
- State Key Laboratory of Analytical Chemistry for Life Science and Collaborative Innovation Center of Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing, Jiangsu 210023 P.R. China
| | - Jing-Juan Xu
- State Key Laboratory of Analytical Chemistry for Life Science and Collaborative Innovation Center of Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing, Jiangsu 210023 P.R. China
| | - Hong-Yuan Chen
- State Key Laboratory of Analytical Chemistry for Life Science and Collaborative Innovation Center of Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing, Jiangsu 210023 P.R. China
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Jin X, Yu ZF, Chen F, Lu GX, Ding XY, Xie LJ, Sun JT. Neuronal Nitric Oxide Synthase in Neural Stem Cells Induces Neuronal Fate Commitment via the Inhibition of Histone Deacetylase 2. Front Cell Neurosci 2017; 11:66. [PMID: 28326018 PMCID: PMC5339248 DOI: 10.3389/fncel.2017.00066] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 02/24/2017] [Indexed: 11/13/2022] Open
Abstract
Active adult neurogenesis produces new functional neurons, which replace the lost ones and contribute to brain repair. Promoting neurogenesis may offer a therapeutic strategy for human diseases associated with neurodegeneration. Here, we report that endogenous neuronal nitric oxide synthase (nNOS) for neural stem cells (NSCs) or progenitors positively regulates neurogenesis. nNOS repression exhibits significantly decreased neuronal differentiation and nNOS upregulation promotes neurons production from NSCs. Using a quantitative approach, we show that instructive effect, that is instruction of NSCs to adopt a neuronal fate, contributes to the favorable effect of endogenous nNOS on neurogenesis. Furthermore, nNOS-mediated instruction of neuronal fate commitment is predominantly due to the reduction of histone deacetylase 2 (HDAC2) expression and enzymatic activity. Further investigation will be needed to test whether HDAC2 can serve as a new target for therapeutic intervention of neurodegenerative disorders.
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Affiliation(s)
- Xing Jin
- Department of Pharmacy, the Affiliated Suzhou Municipal Hospital, Nanjing Medical University, Suzhou, China
| | - Zhang-Feng Yu
- Department of Critical Care Medicine, the Affiliated Suzhou Municipal Hospital, Nanjing Medical University, Suzhou, China
| | - Fang Chen
- Department of Pharmacy, the Affiliated Suzhou Municipal Hospital, Nanjing Medical University, Suzhou, China
| | - Guang-Xian Lu
- Department of Pharmacy, the Affiliated Suzhou Municipal Hospital, Nanjing Medical University, Suzhou, China
| | - Xin-Yuan Ding
- Department of Pharmacy, the Affiliated Suzhou Municipal Hospital, Nanjing Medical University, Suzhou, China
| | - Lin-Jun Xie
- Department of Pharmacy, the Affiliated Suzhou Municipal Hospital, Nanjing Medical University, Suzhou, China
| | - Jian-Tong Sun
- Department of Pharmacy, the Affiliated Suzhou Municipal Hospital, Nanjing Medical University, Suzhou, China
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Kuntz S, Poeck B, Strauss R. Visual Working Memory Requires Permissive and Instructive NO/cGMP Signaling at Presynapses in the Drosophila Central Brain. Curr Biol 2017; 27:613-623. [PMID: 28216314 DOI: 10.1016/j.cub.2016.12.056] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 12/24/2016] [Accepted: 12/28/2016] [Indexed: 12/20/2022]
Abstract
The gaseous second messenger nitric oxide (NO) has been shown to regulate memory formation by activating retrograde signaling cascades from post- to presynapse that involve cyclic guanosine monophosphate (cGMP) production to induce synaptic plasticity and transcriptional changes. In this study, we analyzed the role of NO in the formation of a visual working memory that lasts only a few seconds. This memory is encoded in a subset of ring neurons that form the ellipsoid body in the Drosophila brain. Using genetic and pharmacological manipulations, we show that NO signaling is required for cGMP-mediated CREB activation, leading to the expression of competence factors like the synaptic homer protein. Interestingly, this cell-autonomous function can also be fulfilled by hydrogen sulfide (H2S) through a converging pathway, revealing for the first time that endogenously produced H2S has a role in memory processes. Notably, the NO synthase is strictly localized to the axonal output branches of the ring neurons, and this localization seems to be necessary for a second, phasic role of NO signaling. We provide evidence for a model where NO modulates the opening of cGMP-regulated cation channels to encode a short-term memory trace. Local production of NO/cGMP in restricted branches of ring neurons seems to represent the engram for objects, and comparing signal levels between individual ring neurons is used to orient the fly during search behavior. Due to its short half-life, NO seems to be a uniquely suited second messenger to encode working memories that have to be restricted in their duration.
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Affiliation(s)
- Sara Kuntz
- Institut für Zoologie III (Neurobiologie), Johannes Gutenberg-Universität Mainz, Colonel-Kleinmann-Weg 2, 55099 Mainz, Germany
| | - Burkhard Poeck
- Institut für Zoologie III (Neurobiologie), Johannes Gutenberg-Universität Mainz, Colonel-Kleinmann-Weg 2, 55099 Mainz, Germany
| | - Roland Strauss
- Institut für Zoologie III (Neurobiologie), Johannes Gutenberg-Universität Mainz, Colonel-Kleinmann-Weg 2, 55099 Mainz, Germany.
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79
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Zhang B, Wang L, Chen T, Hong J, Sha S, Wang J, Xiao H, Chen L. Sigma-1 receptor deficiency reduces GABAergic inhibition in the basolateral amygdala leading to LTD impairment and depressive-like behaviors. Neuropharmacology 2017; 116:387-398. [PMID: 28108357 DOI: 10.1016/j.neuropharm.2017.01.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Revised: 12/17/2016] [Accepted: 01/16/2017] [Indexed: 01/01/2023]
Abstract
Sigma-1 receptor knockout (σ1R-/-) in male mice causes depressive-like phenotype. We observed the expression of σ1R in principal neurons of basolateral amygdala (BLA), a main region for affective regulation. The present study investigated the influence of σ1R deficiency in BLA neurons on synaptic properties and plasticity at cortico-BLA pathway. In comparison with wild-type (WT) mice, the slopes of field excitatory postsynaptic potentials (fEPSP) were reduced in σ1R-/- mice with the increases in paired-pulse facilitation (PPF) and paired-pulse inhibition (PPI) values. Induction of NMDA receptor (NMDAr)-dependent long-term potentiation (LTP) and NMDAr-independent long-term depression (LTD) were impaired in σ1R-/- mice. The NMDAr NR2B phosphorylation in BLA of σ1R-/- mice was lower than in WT mice. The coupling of nNOS to PSD-95 and nitric oxide (NO) level were reduced in BLA of σ1R-/- mice, which were recovered by the BLA-injection of NMDAr agonist NMDA. The bath-application of NMDA in BLA slices from σ1R-/- mice corrected the reduced fEPSP slopes and increased PPF and PPI and recovered the LTP and LTD induction, which were sensitive to nNOS inhibitor 7-NI. NO donor DETA/NO or GABAAR agonist muscimol could correct the PPI and recover LTD in σ1R-/- mice. In addition, the BLA-injection of NMDA, DETA/NO or muscimol could relieve the depressive-like behaviors in σ1R-/- mice. These results indicate that the σ1R deficiency in BLA principal neurons via NMDAr dysfunction suppresses nNOS activity and NO production to reduce GABAAR-mediated inhibition, which impairs LTD induction and causes depressive-like phenotype.
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Affiliation(s)
- Baofeng Zhang
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing 210029, China; Department of Physiology, Nanjing Medical University, Nanjing 210029, China
| | - Ling Wang
- Department of Physiology, Nanjing Medical University, Nanjing 210029, China
| | - Tingting Chen
- Department of Physiology, Nanjing Medical University, Nanjing 210029, China
| | - Juan Hong
- Department of Physiology, Nanjing Medical University, Nanjing 210029, China
| | - Sha Sha
- Department of Physiology, Nanjing Medical University, Nanjing 210029, China
| | - Jun Wang
- Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 210029, China.
| | - Hang Xiao
- Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 210029, China
| | - Ling Chen
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing 210029, China; Department of Physiology, Nanjing Medical University, Nanjing 210029, China.
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Dorner-Ciossek C, Kroker KS, Rosenbrock H. Role of PDE9 in Cognition. ADVANCES IN NEUROBIOLOGY 2017; 17:231-254. [DOI: 10.1007/978-3-319-58811-7_9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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81
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Yafarova GG, Andrianov VV, Yagudin RK, Shaikhutdinov II, Gainutdinov KL. Nitric Oxide Production in the Rat Spinal Cord, Heart, and Liver After Spinal Cord Injury. BIONANOSCIENCE 2016. [DOI: 10.1007/s12668-016-0229-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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82
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Yao Y, Kong C, Yin L, Jain AD, Ratia K, Thatcher GRJ, Moore TW, Driver TG, Miller LW. Time-Gated Detection of Cystathionine γ-Lyase Activity and Inhibition with a Selective, Luminogenic Hydrogen Sulfide Sensor. Chemistry 2016; 23:752-756. [PMID: 27734530 DOI: 10.1002/chem.201604786] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Indexed: 12/18/2022]
Abstract
Herein, we report the design, synthesis, and characterization of a lanthanideIII complex-based probe for the time-gated luminescence detection of hydrogen sulfide (H2 S) in aqueous media. The probe's unique sensing mechanism relies on the selective reduction of azide to amine by sulfide, followed by intramolecular cyclization to form a quinolinone. The quinolinone is a sensitizer that absorbs near-UV light and transfers excitation energy to coordinated TbIII or EuIII ions to trigger a strong "turn-on" luminescence response with ms-scale lifetimes characteristic of lanthanide complexes. Using this probe, we developed a robust, high throughput screening (HTS) assay for detecting H2 S generated by cystathionine γ-lyase (CSE), one of the main producers of H2 S in mammalian cells. In a 240-compound screen to identify potential CSE inhibitors, the EuIII analogue of the sensor showed a low false-positive rate and high Z'-factor (>0.7).
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Affiliation(s)
- Yao Yao
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor Street, MC 111, Chicago, Illinois, 60607, USA
| | - Chen Kong
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor Street, MC 111, Chicago, Illinois, 60607, USA
| | - Liang Yin
- Department of Medicinal Chemistry and Pharmacognosy, UICentre for Drug Discovery, University of Illinois Cancer Center, University of Illinois at Chicago, Chicago, Illinois, 60612, USA
| | - Atul D Jain
- Department of Medicinal Chemistry and Pharmacognosy, UICentre for Drug Discovery, University of Illinois Cancer Center, University of Illinois at Chicago, Chicago, Illinois, 60612, USA
| | - Kiira Ratia
- Department of Medicinal Chemistry and Pharmacognosy, UICentre for Drug Discovery, University of Illinois Cancer Center, University of Illinois at Chicago, Chicago, Illinois, 60612, USA
| | - Gregory R J Thatcher
- Department of Medicinal Chemistry and Pharmacognosy, UICentre for Drug Discovery, University of Illinois Cancer Center, University of Illinois at Chicago, Chicago, Illinois, 60612, USA
| | - Terry W Moore
- Department of Medicinal Chemistry and Pharmacognosy, UICentre for Drug Discovery, University of Illinois Cancer Center, University of Illinois at Chicago, Chicago, Illinois, 60612, USA
| | - Tom G Driver
- Institute of Next Generation Matter Transformation, College of Chemical Engineering, Huaqiao University, 668 Jimei Blvd. Xiamen, Fujian, 361021, P. R. China
| | - Lawrence W Miller
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor Street, MC 111, Chicago, Illinois, 60607, USA
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83
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Jin X, Wu S, She M, Jia Y, Hao L, Yin B, Wang L, Obst M, Shen Y, Zhang Y, Li J. Novel Fluorescein-Based Fluorescent Probe for Detecting H 2S and Its Real Applications in Blood Plasma and Biological Imaging. Anal Chem 2016; 88:11253-11260. [PMID: 27780356 DOI: 10.1021/acs.analchem.6b04087] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A broad-spectrum fluorescent probe, which can be applied to monitoring H2S in various biological systems, has been rationally designed and synthesized. This specific probe was applied to localize the endogenous H2S in living Raw264.7 macrophage cells, HepG2 cells, and H9C2 cells. At the same time, the probe has successfully visualized CBS- and CSE-induced endogenous H2S production and monitored CBS and CSE activity in H9C2 cells. This probe could serve as a powerful molecular imaging tool to further explore the physiological function and the molecular mechanisms of endogenous H2S in living animal systems.
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Affiliation(s)
- Xilang Jin
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University , Xi'an, Shaanxi 710127, P. R. China.,School of Materials and Chemical Engineering, Xi'an Technological University , Xi'an 710032, Shaanxi P. R. China
| | - Shaoping Wu
- Key Laboratory of Resource Biology and Biotechnology in Western China (Northwest University), Ministry of Education; Biomedicine Key Laboratory of Shaanxi Province, Northwest University , Xi'an, Shaanxi 710069, P. R. China
| | - Mengyao She
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University , Xi'an, Shaanxi 710127, P. R. China
| | - Yifan Jia
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University , Xi'an, Shaanxi 710127, P. R. China
| | - Likai Hao
- Center for Applied Geoscience, Institute for Geoscience, Eberhard-Karls University Tübingen , Hölderlinstr. 12, Tübingen 72074, Germany
| | - Bing Yin
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University , Xi'an, Shaanxi 710127, P. R. China
| | - Lanying Wang
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University , Xi'an, Shaanxi 710127, P. R. China
| | - Martin Obst
- Bayreuth Center for Ecology and Environmental Research (BayCEER), University of Bayreuth , Dr.-Hans-Frisch-Str. 1-3, Bayreuth 95448, Germany
| | - Yehua Shen
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University , Xi'an, Shaanxi 710127, P. R. China
| | - Yongmin Zhang
- Key Laboratory of Resource Biology and Biotechnology in Western China (Northwest University), Ministry of Education; Biomedicine Key Laboratory of Shaanxi Province, Northwest University , Xi'an, Shaanxi 710069, P. R. China
| | - Jianli Li
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University , Xi'an, Shaanxi 710127, P. R. China
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84
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Chen X, Chen Q, Zhang X, Li R, Jia Y, Ef AA, Jia A, Hu L, Hu X. Hydrogen sulfide mediates nicotine biosynthesis in tobacco (Nicotiana tabacum) under high temperature conditions. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2016; 104:174-9. [PMID: 27035256 DOI: 10.1016/j.plaphy.2016.02.033] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 02/14/2016] [Accepted: 02/23/2016] [Indexed: 05/28/2023]
Abstract
Hydrogen sulfide (H2S) acts as a signal to induce many physiological processes in plants, but its role in controlling the biosynthesis of secondary metabolites is not well established. In this study, we found that high temperature (HT) treatment induced nicotine biosynthesis in tobacco (Nicotiana tabacum) and promoted the rapid accumulation of H2S. Furthermore, HT triggered the biosynthesis of jasmonic acid (JA), a plant hormone that promotes nicotine biosynthesis. Suppression of the H2S signal using chemical inhibitors or via RNAi suppression of l-cysteine desulphydrase (L-CD) in transgenic plants, compromised JA production and nicotine biosynthesis under HT treatments, and these inhibitory effects could be reversed by applying exogenous H2S. Based on these data, we propose that H2S is an important trigger of nicotine biosynthesis in tobacco under HT conditions, and that H2S acts upstream of JA signaling by modulating the transcription of genes associated with JA biosynthesis.
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Affiliation(s)
- Xiaodong Chen
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Qian Chen
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Xiaoming Zhang
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Ruijing Li
- Shanghai Key Laboratory of Bio-Energy Crops, School of Life Sciences, Shanghai University, Shanghai, China
| | - Yujie Jia
- Shanghai Key Laboratory of Bio-Energy Crops, School of Life Sciences, Shanghai University, Shanghai, China
| | - Abd Allah Ef
- Plant Production Department, College of Food and Agricultural Sciences, King Saud University, PO. Box. 2460 Riyadh 11451, Saudi Arabia
| | - Aiqun Jia
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Liwei Hu
- Laboratory of Tobacco Agriculture, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, China.
| | - Xiangyang Hu
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; Shanghai Key Laboratory of Bio-Energy Crops, School of Life Sciences, Shanghai University, Shanghai, China.
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85
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Sweeney Y, Clopath C. Emergent spatial synaptic structure from diffusive plasticity. Eur J Neurosci 2016; 45:1057-1067. [DOI: 10.1111/ejn.13279] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 05/04/2016] [Accepted: 05/13/2016] [Indexed: 11/29/2022]
Affiliation(s)
- Yann Sweeney
- Department of Bioengineering; Imperial College London, South Kensington Campus; London SW7 2AZ UK
| | - Claudia Clopath
- Department of Bioengineering; Imperial College London, South Kensington Campus; London SW7 2AZ UK
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86
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Abstract
Homochirality is fundamental for life. L-Amino acids are exclusively used as substrates for the polymerization and formation of peptides and proteins in living systems. However, D- amino acids were recently detected in various living organisms, including mammals. Of these D-amino acids, D-serine has been most extensively studied. D-Serine was found to play an important role as a neurotransmitter in the human central nervous system (CNS) by binding to the N-methyl- D-aspartate receptor (NMDAr). D-Serine binds with high affinity to a co-agonist site at the NMDAr and, along with glutamate, mediates several vital physiological and pathological processes, including NMDAr transmission, synaptic plasticity and neurotoxicity. Therefore, a key role for D-serine as a determinant of NMDAr mediated neurotransmission in mammalian CNS has been suggested. In this context, we review the known functions of D-serine in human physiology, such as CNS development, and pathology, such as neuro-psychiatric and neurodegenerative diseases related to NMDAr dysfunction.
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87
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Dai CG, Liu XL, Du XJ, Zhang Y, Song QH. Two-Input Fluorescent Probe for Thiols and Hydrogen Sulfide Chemosensing and Live Cell Imaging. ACS Sens 2016. [DOI: 10.1021/acssensors.6b00291] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Chun-Guang Dai
- Department
of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Xiu-Ling Liu
- Department
of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Xiao-Jiao Du
- School
of Life Sciences, University of Science and Technology of China, Hefei 230027, P. R. China
| | - Yan Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, Institute of Chemistry & BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Qin-Hua Song
- Department
of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
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88
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Ciszek BP, O'Buckley SC, Nackley. AG. Persistent Catechol-O-methyltransferase-dependent Pain Is Initiated by Peripheral β-Adrenergic Receptors. Anesthesiology 2016; 124:1122-35. [PMID: 26950706 PMCID: PMC5015695 DOI: 10.1097/aln.0000000000001070] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Patients with chronic pain disorders exhibit increased levels of catecholamines alongside diminished activity of catechol-O-methyltransferase (COMT), an enzyme that metabolizes catecholamines. The authors found that acute pharmacologic inhibition of COMT in rodents produces hypersensitivity to mechanical and thermal stimuli via β-adrenergic receptor (βAR) activation. The contribution of distinct βAR populations to the development of persistent pain linked to abnormalities in catecholamine signaling requires further investigation. METHODS Here, the authors sought to determine the contribution of peripheral, spinal, and supraspinal βARs to persistent COMT-dependent pain. They implanted osmotic pumps to deliver the COMT inhibitor OR486 (Tocris, USA) for 2 weeks. Behavioral responses to mechanical and thermal stimuli were evaluated before and every other day after pump implantation. The site of action was evaluated in adrenalectomized rats receiving sustained OR486 or in intact rats receiving sustained βAR antagonists peripherally, spinally, or supraspinally alongside OR486. RESULTS The authors found that male (N = 6) and female (N = 6) rats receiving sustained OR486 exhibited decreased paw withdrawal thresholds (control 5.74 ± 0.24 vs. OR486 1.54 ± 0.08, mean ± SEM) and increased paw withdrawal frequency to mechanical stimuli (control 4.80 ± 0.22 vs. OR486 8.10 ± 0.13) and decreased paw withdrawal latency to thermal heat (control 9.69 ± 0.23 vs. OR486 5.91 ± 0.11). In contrast, adrenalectomized rats (N = 12) failed to develop OR486-induced hypersensitivity. Furthermore, peripheral (N = 9), but not spinal (N = 4) or supraspinal (N = 4), administration of the nonselective βAR antagonist propranolol, the β2AR antagonist ICI-118,511, or the β3AR antagonist SR59230A blocked the development of OR486-induced hypersensitivity. CONCLUSIONS Peripheral adrenergic input is necessary for the development of persistent COMT-dependent pain, and peripherally-acting βAR antagonists may benefit chronic pain patients.
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Affiliation(s)
- Brittney P. Ciszek
- Center for Pain Research and Innovation, Koury Oral Health Sciences Building, University of North Carolina, Chapel Hill NC 27599-7455
| | - Sandra C. O'Buckley
- Center for Pain Research and Innovation, Koury Oral Health Sciences Building, University of North Carolina, Chapel Hill NC 27599-7455
| | - Andrea G. Nackley.
- Center for Pain Research and Innovation, Koury Oral Health Sciences Building, University of North Carolina, Chapel Hill NC 27599-7455
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89
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Regulatory effects of anesthetics on nitric oxide. Life Sci 2016; 151:76-85. [DOI: 10.1016/j.lfs.2016.02.094] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Revised: 02/20/2016] [Accepted: 02/26/2016] [Indexed: 12/26/2022]
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90
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The NMDA Receptor and Schizophrenia: From Pathophysiology to Treatment. ADVANCES IN PHARMACOLOGY 2016; 76:351-82. [PMID: 27288082 DOI: 10.1016/bs.apha.2016.01.006] [Citation(s) in RCA: 181] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Schizophrenia is a severe mental illness that affects almost 1% of the population worldwide. Even though the etiology of schizophrenia is uncertain, it is believed to be a neurodevelopmental disorder that results from a combination of environmental insults and genetic vulnerabilities. Over the past 20 years, there has been a confluence of evidence from many research disciplines pointing to alterations in excitatory signaling, particularly involving hypofunction of the N-methyl-d-aspartate receptor (NMDAR), as a key contributor to the schizophrenia disease process. This review describes the structure-function relationship of the NMDAR channel and how the glycine modulatory site acts as an important regulator of its activity. In addition, this review highlights the genetic, pharmacologic, and biochemical evidence supporting the hypothesis that NMDAR hypofunction contributes to the pathophysiology of schizophrenia. Finally, this chapter highlights some of the most recent and promising pharmacological strategies that are designed to either, directly or indirectly, augment NMDAR function in an effort to treat the cognitive and negative symptoms of schizophrenia that are not helped by currently available medications.
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91
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Zhang J, Zhou J, Dong X, Zheng X, Zhao W. A near-infrared BODIPY-based fluorescent probe for the detection of hydrogen sulfide in fetal bovine serum and living cells. RSC Adv 2016. [DOI: 10.1039/c6ra06952e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
A near-infrared (NIR) “off–on” fluorescent probe was developed for the detection of H2S. The new probe possesses a highly selective and sensitive response to H2S. The probe has low toxicity and was successfully used to detect H2S in biological serum samples and living cells.
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Affiliation(s)
- Jian Zhang
- School of Pharmacy
- Fudan University
- Shanghai
- P. R. China
| | - Junliang Zhou
- Institute of Pharmacy and Pharmacology
- University of South China
- Hengyang
- P. R. China
| | - Xiaochun Dong
- School of Pharmacy
- Fudan University
- Shanghai
- P. R. China
| | - Xing Zheng
- Institute of Pharmacy and Pharmacology
- University of South China
- Hengyang
- P. R. China
| | - Weili Zhao
- School of Pharmacy
- Fudan University
- Shanghai
- P. R. China
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92
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Buragohain A, Biswas S. Cerium-based azide- and nitro-functionalized UiO-66 frameworks as turn-on fluorescent probes for the sensing of hydrogen sulphide. CrystEngComm 2016. [DOI: 10.1039/c6ce00032k] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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93
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Tron A, Peyret A, Thevenot J, Bofinger R, Lecommandoux S, McClenaghan ND. A prototype reversible polymersome-stabilized H2S photoejector operating under pseudophysiological conditions. Org Biomol Chem 2016; 14:6394-7. [DOI: 10.1039/c6ob01155a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polymersome capsules are shown to solubilise photolabile hydrosulfide-containing (2), as well as hydroxylated (1), malachite green derivatives in their leuco-forms in aqueous buffer solution.
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Affiliation(s)
- A. Tron
- Institut des Sciences Moléculaires
- CNRS UMR 5255
- Univ. Bordeaux
- 33405 Talence
- France
| | - A. Peyret
- Laboratoire de Chimie des Polymères Organiques
- CNRS UMR 5629
- Univ. Bordeaux
- Pessac
- France
| | - J. Thevenot
- Laboratoire de Chimie des Polymères Organiques
- CNRS UMR 5629
- Univ. Bordeaux
- Pessac
- France
| | - R. Bofinger
- Institut des Sciences Moléculaires
- CNRS UMR 5255
- Univ. Bordeaux
- 33405 Talence
- France
| | - S. Lecommandoux
- Laboratoire de Chimie des Polymères Organiques
- CNRS UMR 5629
- Univ. Bordeaux
- Pessac
- France
| | - N. D. McClenaghan
- Institut des Sciences Moléculaires
- CNRS UMR 5255
- Univ. Bordeaux
- 33405 Talence
- France
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94
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A water soluble and fast response fluorescent turn-on copper complex probe for H2S detection in zebra fish. Talanta 2016; 147:445-52. [DOI: 10.1016/j.talanta.2015.10.019] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 10/06/2015] [Accepted: 10/07/2015] [Indexed: 11/27/2022]
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95
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Xu T, Scafa N, Xu LP, Zhou S, Abdullah Al-Ghanem K, Mahboob S, Fugetsu B, Zhang X. Electrochemical hydrogen sulfide biosensors. Analyst 2016; 141:1185-95. [DOI: 10.1039/c5an02208h] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Biological application of electrochemical hydrogen sulfide sensors.
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Affiliation(s)
- Tailin Xu
- Research Center for Bioengineering and Sensing Technology
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Nikki Scafa
- World Precision Instruments
- Sarasota
- FL 34240-9258 USA
| | - Li-Ping Xu
- Research Center for Bioengineering and Sensing Technology
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Shufeng Zhou
- College of Pharmacy
- University of South Florida
- Tampa
- USA
| | | | - Shahid Mahboob
- Department of Zoology
- College of Science
- King Saud University
- Riyadh-11451
- Saudi Arabia
| | - Bunshi Fugetsu
- Policy Alternative Research Institute
- The University of Tokyo
- Tokyo 113-0032
- Japan
| | - Xueji Zhang
- Research Center for Bioengineering and Sensing Technology
- University of Science and Technology Beijing
- Beijing 100083
- China
- World Precision Instruments
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96
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Yu H, Liao Y, Li T, Cui Y, Wang G, Zhao F, Jin Y. Alterations of Synaptic Proteins in the Hippocampus of Mouse Offspring Induced by Developmental Lead Exposure. Mol Neurobiol 2015; 53:6786-6798. [DOI: 10.1007/s12035-015-9597-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2015] [Accepted: 12/01/2015] [Indexed: 12/22/2022]
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97
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Quantitative analysis of isomeric (l-α-, l-β-, d-α-, d-β-) aspartyl residues in proteins from elderly donors. J Pharm Biomed Anal 2015; 116:25-33. [DOI: 10.1016/j.jpba.2015.04.029] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 04/03/2015] [Accepted: 04/20/2015] [Indexed: 01/20/2023]
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98
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Bouvier G, Bidoret C, Casado M, Paoletti P. Presynaptic NMDA receptors: Roles and rules. Neuroscience 2015; 311:322-40. [DOI: 10.1016/j.neuroscience.2015.10.033] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 10/18/2015] [Accepted: 10/19/2015] [Indexed: 01/03/2023]
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99
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Su Y, Liu D, Liu Y, Zhang C, Wang J, Wang S. Physiologic Levels of Endogenous Hydrogen Sulfide Maintain the Proliferation and Differentiation Capacity of Periodontal Ligament Stem Cells. J Periodontol 2015; 86:1276-86. [DOI: 10.1902/jop.2015.150240] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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100
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Nitric oxide signaling is recruited as a compensatory mechanism for sustaining synaptic plasticity in Alzheimer's disease mice. J Neurosci 2015; 35:6893-902. [PMID: 25926464 DOI: 10.1523/jneurosci.4002-14.2015] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Synaptic plasticity deficits are increasingly recognized as causing the memory impairments which define Alzheimer's disease (AD). In AD mouse models, evidence of abnormal synaptic function is present before the onset of cognitive deficits, and presents as increased synaptic depression revealed only when synaptic homeostasis is challenged, such as with suppression of ryanodine receptor (RyR)-evoked calcium signaling. Otherwise, at early disease stages, the synaptic physiology phenotype appears normal. This suggests compensatory mechanisms are recruited to maintain a functionally normal net output of the hippocampal circuit. A candidate calcium-regulated synaptic modulator is nitric oxide (NO), which acts presynaptically to boost vesicle release and glutamatergic transmission. Here we tested whether there is a feedforward cycle between the increased RyR calcium release seen in presymptomatic AD mice and aberrant NO signaling which augments synaptic plasticity. Using a combination of electrophysiological approaches, two-photon calcium imaging, and protein biochemistry in hippocampal tissue from presymptomatic 3xTg-AD and NonTg mice, we show that blocking NO synthesis results in markedly augmented synaptic depression mediated through presynaptic mechanisms in 3xTg-AD mice. Additionally, blocking NO reduces the augmented synaptically evoked dendritic calcium release mediated by enhanced RyR calcium release. This is accompanied by increased nNOS levels in the AD mice and is reversed upon normalization of RyR-evoked calcium release with chronic dantrolene treatment. Thus, recruitment of NO is serving a compensatory role to boost synaptic transmission and plasticity during early AD stages. However, NO's dual role in neuroprotection and neurodegeneration may convert to maladaptive functions as the disease progresses.
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