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Chemicalsynthesis
CHEMICAL SYNTHESIS, DISPOSITION AND METABOLISM OF DOPAMINE AND NORADRENALINE SULPHATES BARBARA ALEKSANDRA OSIKOWSKA A thesis submitted for the degree of Doctor of Philosophy to the University of London December 1983 - 2- ABSTRACT The existence of an enzymatic pathway which is capable of sulphating the catecholamine neurotransmitters has been known for over four decades. The importance of this metabolic pathway and its overall contribution to the enzymatic breakdown of these neurotransmitters has generally received less attention than deamination and JKmethylation. The aim of this work was to synthesise authentic dopamine and noradrenaline ^-sulphates, for use as standards in studies on the disposition and metabolism of these important products of dopamine and noradrenaline metabolism. 1. Three products resulted from chemical sulphonation of dopamine: dopamine 3-0-sulphate, dopamine 4-0-sulphate and dopamine 6- s u l p h o n i c acid. 2. Because all three products of dopamine sulphonation are isomeric, chemically similar organic acids and could not be distinguished by analytical techiques such as elemental analysis, ultraviolet spectroscopy and infrared spectroscopy, high performance liquid chromatography was employed for the separation and purification of these products, and nuclear magnetic resonance spectroscopy was considered to be the only technique powerful enough to distinguish between these isomers. 3. Noradrenaline 3- and 4-0-sulphates were isolated from a one-step synthetic reaction. They were separated, purified and characterised using techniques applied for the synthesis and separation of dopamine ^-sulphates. - 3- 4. The disposition of dopamine 3- and 4-0-sulphates was investigated in human urine before and following L-dopa administration and in multiple urine samples from a single subject. -
Analgesic Effects and Pharmacologic Mechanisms of the Gelsemium
www.nature.com/scientificreports OPEN Analgesic efects and pharmacologic mechanisms of the Gelsemium alkaloid koumine on a Received: 8 June 2017 Accepted: 13 October 2017 rat model of postoperative pain Published: xx xx xxxx Bo-Jun Xiong1, Ying Xu1,2, Gui-Lin Jin1,2, Ming Liu1, Jian Yang1,2 & Chang-Xi Yu1,2 Postoperative pain (POP) of various durations is a common complication of surgical procedures. POP is caused by nerve damage and infammatory responses that are difcult to treat. The neuroinfammation- glia-steroid network is known to be important in POP. It has been reported that the Gelsemium alkaloid koumine possesses analgesic, anti-infammatory and neurosteroid modulating activities. This study was undertaken to test the analgesic efects of koumine against POP and explore the underlying pharmacologic mechanisms. Our results showed that microglia and astroglia were activated in the spinal dorsal horn post-incision, along with an increase of proinfammatory cytokines (interleukin 1β, interleukin 6, and tumor necrosis factor α). Both subcutaneous and intrathecal (i.t.) koumine treatment after incision signifcantly prevented mechanical allodynia and thermal hyperalgesia, inhibited microglial and astroglial activation, and suppressed expression of proinfammatory cytokines. Moreover, the analgesic efects of koumine were antagonized by i.t. administration of translocator protein (18 kDa) (TSPO) antagonist PK11195 and GABAA receptor antagonist bicuculline. Together, koumine prevented mechanical allodynia and thermal hyperalgesia caused by POP. The pharmacologic mechanism of koumine-mediated analgesia might involve inhibition of spinal neuroinfammation and activation of TSPO. These data suggested that koumine might be a potential pharmacotherapy for the management of POP. Postoperative pain (POP) of varying duration is extremely common afer surgery. -
Use of Chemical Chelators As Reversal Agents for Drug
(19) TZZ_ _ZZZ_T (11) EP 1 210 090 B1 (12) EUROPEAN PATENT SPECIFICATION (45) Date of publication and mention (51) Int Cl.: of the grant of the patent: A61K 31/724 (2006.01) A61K 31/194 (2006.01) 18.06.2014 Bulletin 2014/25 A61P 39/04 (2006.01) (21) Application number: 00964006.1 (86) International application number: PCT/EP2000/007694 (22) Date of filing: 07.08.2000 (87) International publication number: WO 2001/012202 (22.02.2001 Gazette 2001/08) (54) USE OF CHEMICAL CHELATORS AS REVERSAL AGENTS FOR DRUG- INDUCED NEUROMUSCULAR BLOCK VERWENDUNG VON CHEMISCHEN CHELATOREN ZUR UMKEHRUNG VON PHARMAKOLOGISCH-INDUZIERTER NEUROMUSKULÄRER BLOCKIERUNG UTILISATION D’AGENTS CHIMIQUES CHELATANTS COMME AGENTS DE NEUTRALISATION DU BLOCAGE NEUROMUSCULAIRE PROVOQUE PAR DES MEDICAMENTS (84) Designated Contracting States: (56) References cited: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU AU-A- 3 662 895 MC NL PT SE • B DESIRE: "Inactivaton of sarin and soman by (30) Priority: 13.08.1999 EP 99306411 cyclodextrins in vitro" EXPERIENTIA, vol. 43, no. 4, 1987, pages 395-397, XP000907287 (43) Date of publication of application: • B. DESIRE: "Interaction of soman with beta- 05.06.2002 Bulletin 2002/23 cyclodextrin" FUNDAMENTAL AND APPLIED TOXICOLOGY, vol. 7, no. 4, 1986, pages 647-657, (73) Proprietor: Merck Sharp & Dohme B.V. XP000911170 2031 BN Haarlem (NL) • C. MAY: "Development of a toxin-binding agent as a treatment for tunicamycinuracil toxicity: (72) Inventors: protection against tunicamycin poisoning of • BOM, Antonius, Helena, Adolf sheep" AUSTRALIAN VETERINARY JOURNAL, Ratho, Midlothian EH28 8NY (GB) vol. 76, no. -
Transfer of Pseudomonas Plantarii and Pseudomonas Glumae to Burkholderia As Burkholderia Spp
INTERNATIONALJOURNAL OF SYSTEMATICBACTERIOLOGY, Apr. 1994, p. 235-245 Vol. 44, No. 2 0020-7713/94/$04.00+0 Copyright 0 1994, International Union of Microbiological Societies Transfer of Pseudomonas plantarii and Pseudomonas glumae to Burkholderia as Burkholderia spp. and Description of Burkholderia vandii sp. nov. TEIZI URAKAMI, ’ * CHIEKO ITO-YOSHIDA,’ HISAYA ARAKI,’ TOSHIO KIJIMA,3 KEN-ICHIRO SUZUKI,4 AND MU0KOMAGATA’T Biochemicals Division, Mitsubishi Gas Chemical Co., Shibaura, Minato-ku, Tokyo 105, Niigata Research Laboratory, Mitsubishi Gas Chemical Co., Tayuhama, Niigatu 950-31, ’Plant Pathological Division of Biotechnology, Tochigi Agricultural Experiment Station, Utsunomiya 320, Japan Collection of Microorganisms, The Institute of Physical and Chemical Research, Wako-shi, Saitama 351-01,4 and Institute of Molecular Cell and Biology, The University of Tokyo, Bunkyo-ku, Tokyo 113,’ Japan Plant-associated bacteria were characterized and are discussed in relation to authentic members of the genus Pseudomonas sensu stricto. Bacteria belonging to Pseudomonas rRNA group I1 are separated clearly from members of the genus Pseudomonas sensu stricto (Pseudomonasfluorescens rRNA group) on the basis of plant association characteristics, chemotaxonomic characteristics, DNA-DNA hybridization data, rRNA-DNA hy- bridization data, and the sequences of 5s and 16s rRNAs. The transfer of Pseudomonas cepacia, Pseudomonas mallei, Pseudomonas pseudomallei, Pseudomonas caryophylli, Pseudomonas gladioli, Pseudomonas pickettii, and Pseudomonas solanacearum to the new genus Burkholderia is supported; we also propose that Pseudomonas plantarii and Pseudomonas glumae should be transferred to the genus Burkholderia. Isolate VA-1316T (T = type strain) was distinguished from Burkholderia species on the basis of physiological characteristics and DNA-DNA hybridization data. A new species, Burkholderia vandii sp. -
National Center for Toxicological Research
National Center for Toxicological Research Annual Report Research Accomplishments and Plans FY 2015 – FY 2016 Page 0 of 193 Table of Contents Preface – William Slikker, Jr., Ph.D. ................................................................................... 3 NCTR Vision ......................................................................................................................... 7 NCTR Mission ...................................................................................................................... 7 NCTR Strategic Plan ............................................................................................................ 7 NCTR Organizational Structure .......................................................................................... 8 NCTR Location and Facilities .............................................................................................. 9 NCTR Advances Research Through Outreach and Collaboration ................................... 10 NCTR Global Outreach and Training Activities ............................................................... 12 Global Summit on Regulatory Science .................................................................................................12 Training Activities .................................................................................................................................14 NCTR Scientists – Leaders in the Research Community .................................................. 15 Science Advisory Board ................................................................................................... -
Expression of Multiple Populations of Nicotinic Acetylcholine
EXPRESSION OF MULTIPLE POPULATIONS OF NICOTINIC ACETYLCHOLINE RECEPTORS IN BOVINE ADRENAL CHROMAFFIN CELLS DISSERTATION Presented in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in the Graduate School of The Ohio State University By Bryan W. Wenger, B.A. The Ohio State University 2003 Dissertation Committee: Approved by: Professor Dennis B. McKay, Advisor Professor R. Thomas Boyd ________________________ Advisor Professor Popat N. Patil College of Pharmacy Professor Lane Wallace, Ph.D. ABSTRACT The importance of the role of nAChRs in physiological and pathological states is becoming increasingly clear. It is apparent that there are multitudes of nAChR subtypes with different expression patterns, pharmacologies and functions that may be important in various disease states. Therefore, a greater understanding of nAChR subtypes is essential for potential pharmacological intervention in nAChR systems. Bovine adrenal chromaffin cells are a primary culture of a neuronal type cell that express ganglionic types of nAChRs whose activation can be related to a functional response. While much is known about the outcome of functional activation of adrenal nAChRs, little work has been done in characterizing populations of nAChRs in adrenal chromaffin cells. These studies characterize the pharmacology and regulation of populations of nAChRs found in bovine adrenal chromaffin cells. The primary findings of this research include 1) the characterization of an irreversible antagonist of adrenal nAChRs, 2) the discovery of -
Dynamic Regulation of Synaptic GABA Release by the Glutamate-Glutamine Cycle in Hippocampal Area CA1
The Journal of Neuroscience, August 16, 2006 • 26(33):8537–8548 • 8537 Development/Plasticity/Repair Dynamic Regulation of Synaptic GABA Release by the Glutamate-Glutamine Cycle in Hippocampal Area CA1 Shu-Ling Liang,1 Gregory C. Carlson,1 and Douglas A. Coulter1,2 1Division of Neurology and the Pediatric Regional Epilepsy Program, Children’s Hospital of Philadelphia, and 2Departments of Pediatrics, Neurology, and Neuroscience, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104 Vesicular GABA and intraterminal glutamate concentrations are in equilibrium, suggesting inhibitory efficacy may depend on glutamate availability. Two main intraterminal glutamate sources are uptake by neuronal glutamate transporters and glutamine synthesized through the astrocytic glutamate-glutamine cycle. We examined the involvement of the glutamate-glutamine cycle in modulating GABAergic synaptic efficacy. In the absence of neuronal activity, disruption of the glutamate-glutamine cycle by blockade of neuronal glutamine transport with ␣-(methylamino) isobutyric acid (MeAIB; 5 mM) or inhibition of glutamine synthesis in astrocytes with methionine sulfoximine (MSO; 1.5 mM) had no effect on miniature IPSCs recorded in hippocampal area CA1 pyramidal neurons. How- ever, after a period of moderate synaptic activity, application of MeAIB, MSO, or dihydrokainate (250 M; an astrocytic glutamate transporter inhibitor) significantly reduced evoked IPSC (eIPSC) amplitudes. The MSO effect could be reversed by exogenous application of glutamine (5 mM), whereas glutamine could not rescue the eIPSC decreases induced by the neuronal glutamine transporter inhibitor MeAIB. The activity-dependent reduction in eIPSCs by glutamate-glutamine cycle blockers was accompanied by an enhanced blocking effect of the low-affinity GABAA receptor antagonist, TPMPA [1,2,5,6-tetrahydropyridin-4-yl)methylphosphinic acid], consistent with diminished GABA release. -
Methionine Sulfoximine: a Novel Anti Inflammatory Agent
Wayne State University Wayne State University Dissertations January 2018 Methionine Sulfoximine: A Novel Anti Inflammatory Agent Tyler Peters Wayne State University, [email protected] Follow this and additional works at: https://digitalcommons.wayne.edu/oa_dissertations Part of the Biochemistry Commons Recommended Citation Peters, Tyler, "Methionine Sulfoximine: A Novel Anti Inflammatory Agent" (2018). Wayne State University Dissertations. 2124. https://digitalcommons.wayne.edu/oa_dissertations/2124 This Open Access Dissertation is brought to you for free and open access by DigitalCommons@WayneState. It has been accepted for inclusion in Wayne State University Dissertations by an authorized administrator of DigitalCommons@WayneState. METHIONINE SULFOXIMINE: A NOVEL ANTI-INFLAMMATORY AGENT by TYLER J. PETERS DISSERTATION Submitted to the Graduate School of Wayne State University – School of Medicine Detroit, Michigan in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOHPY 2018 MAJOR: BIOCHEMISTRY & MOL. BIOLOGY Approved By: __________________________________________ Advisor Date DEDICATION This work is dedicated to my family. I wouldn’t have made it this far without your unconditional love and support. ii ACKNOWLEDGEMENTS Thank you Dr. Brusilow, I consider myself very fortunate for having the privilege of working in the laboratory of Dr. William S.A. Brusilow these past few years. Under his mentorship, my scientific autonomy was always respected, and my opinions were always valued with consideration. I am thankful for his guidance and support as an advisor; I truly admire his patience and envy his calm demeanor. He exemplifies scientific integrity, and his dedication to develop MSO has inspired me. I had never experienced consistent failure in any aspect of life before encountering scientific research; at times I felt that Dr. -
Simvastatin Attenuates Renal Ischemia/Reperfusion Injury from Oxidative Stress Via Targeting Nrf2/HO‑1 Pathway
4460 EXPERIMENTAL AND THERAPEUTIC MEDICINE 14: 4460-4466, 2017 Simvastatin attenuates renal ischemia/reperfusion injury from oxidative stress via targeting Nrf2/HO‑1 pathway YU ZHANG1, SHU RONG2, YI FENG1, LIQUN ZHAO1, JIANG HONG1, RUILAN WANG1 and WEIJIE YUAN2 Departments of 1Emergency Intensive Medicine and 2Nephrology, Shanghai General Hospital of Nanjing Medical University, Shanghai 200082, P.R. China Received August 31, 2016; Accepted June 15, 2017 DOI: 10.3892/etm.2017.5023 Abstract. Ischemia-reperfusion (I/R) injury of the kidneys pathway to ultimately protect the kidneys from I/R-associated is commonly encountered in the clinic. The present study oxidative damage. assessed the efficacy of simvastatin in preventing I/R‑induced renal injury in a rat model and investigated the corresponding Introduction molecular mechanisms. Rats were divided into 3 groups, including a sham, I/R and I/R + simvastatin group. The Ischemia/reperfusion (I/R) injury of the kidneys represents a results revealed that in the I/R group, the levels of blood urea challenge in the clinic and is commonly encountered in renal nitrogen, serum creatinine and lactate dehydrogenase were transplantation, hemorrhagic shock, partial nephrectomy and significantly higher than those in the sham group, which accidental or iatrogenic trauma, brining about serious injury was significantly inhibited by simvastatin pre‑treatment. to multiple organs, including renal tubules, brain and heart (1). I/R significantly decreased superoxide dismutase activity Therefore, it is urgent to find effective therapies and elucidate compared with that in the sham group, which was largely molecular mechanisms by which renal I/R injury may be rescued by simvastatin. -
Aminophylline Catalog Number A1755 Storage
Aminophylline Catalog Number A1755 Storage Temperature –20 °C Replacement for Catalog Number 216895 CAS RN 317-34-0 Storage/Stability Synonyms: theophylline hemiethylenediamine complex; Aminophylline should be kept tightly closed to prevent 3,7-dihydro-1,3-demethyl-1H-purine-2,6-dione CO2 absorption from the atmosphere, which leads to compound with 1,2-ethanediamine (2:1); formation of theophylline and decreased solubility in 1,2 3 (theophylline)2 • ethylenediamine aqueous solutions. Stock solutions should be protected from light and prevented from contact with Product Description metals.2 Molecular Formula: C7H8N4O2 ·1/2 (C2H8N2) Molecular Weight: 210.3 References 1. The Merck Index, 12th ed., Entry# 485. Aminophylline is a xanthine derivative which is a 2. Martindale: The Extra Pharmacopoeia, 31st ed., combination of theophylline and ethylenediamine that is Reynolds, J. E. F., ed., Royal Pharmaceutical more water soluble than theophylline alone. Society (London, England: 1996), pp. 1651-1652. Aminophylline has been widely used as an inhibitor of 3. Data for Biochemical Research, 3rd ed., Dawson, cAMP phosphodiesterase.3 R. M. C., et al., Oxford University Press (New York, NY: 1986), pp. 316-317. Aminophylline has been shown to limit 4. Pelech, S. L., et al., cAMP analogues inhibit phosphatidylcholine biosynthesis in cultured rat phosphatidylcholine biosynthesis in cultured rat hepatocytes.4 It has been used in studies of acute hepatocytes. J. Biol. Chem., 256(16), 8283-8286 hypoxemia in newborn and older guinea pigs.5 The (1981). effect of various xanthine derivatives, including 5. Crisanti, K. C., and Fewell, J. E., Aminophylline aminophylline, on activation of the cystic fibrosis alters the core temperature response to acute transmembrane conductance regulator (CFTR) chloride hypoxemia in newborn and older guinea pigs. -
Multi-Class Determination of 64 Illicit Compounds in Dietary Supplements Using Liquid Chromatography–Tandem Mass Spectrometry
molecules Article Multi-Class Determination of 64 Illicit Compounds in Dietary Supplements Using Liquid Chromatography–Tandem Mass Spectrometry Dasom Shin, Hui-Seung Kang *, Hyungsoo Kim and Guiim Moon New Hazardous Substances Division, Department of Food Safety Evaluation, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Osong, Cheongju 28159, Korea; [email protected] (D.S.); [email protected] (H.K.); [email protected] (G.M.) * Correspondence: [email protected] Received: 11 August 2020; Accepted: 17 September 2020; Published: 24 September 2020 Abstract: In this work, liquid chromatography–tandem mass spectrometry (LC-MS/MS) method was developed and validated for screening and confirmation of 64 illicit compounds in dietary supplements. The target compounds were illegally used pharmaceutical drugs, prohibited compounds, and not authorized ingredients for different therapeutics (sexual enhancement, weight loss, muscular strengthening, and relaxing products). The validation procedure was performed to evaluate selectivity, linearity, limit of detection (LOD), limit of quantification (LOQ), accuracy, and precision according to the Association of Official Analytical Chemists guidelines. The linearity was >0.98 in the range of 1 1 0.5–200 µg L− . The LOQs were in the range 1–10 µg kg− for all target compounds. The accuracy (expressed as recovery) was 78.5–114%. The precision (expressed as the relative standard deviation) was below 9.15%. The developed method was applied for the determination of illicit compounds in dietary supplements collected from websites. As a result, the total detection rate was 13.5% (27 samples detected in 200 samples). The concentrations of detected samples ranged from 0.51 1 to 226 mg g− . -
Réglementation De La Pharmacie
R E C U E I L D E T E X T E S S U R L A P H A R M A C I E Mis à jour le 13 février 2017 par l’Inspection de la pharmacie P R É A M B U L E La réglementation relative à la pharmacie en vigueur en Nouvelle-Calédonie résulte de la coexistence des dispositions adoptées par la Nouvelle-Calédonie au titre de ses compétences en matières d’hygiène publique, de santé et de professions de la pharmacie1, et de celles adoptées par l’Etat au titre de ses compétences en matières de garanties des libertés publiques, de droit civil et de droit commercial2. Sur le contenu du recueil En 1954, la Nouvelle-Calédonie s’est vue étendre les articles L. 511 à L. 520 et L. 549 à L. 665 de l’ancien Livre V relatif à la Pharmacie du code de la santé publique métropolitain par la loi n° 54-418 du 15 avril 1954 étendant aux territoires d'outre-mer, au Togo et au Cameroun certaines dispositions du Code de la santé publique relatives à l'exercice de la pharmacie3, dont les modalités d’application ont été fixées par le décret modifié n° 55-1122 du 16 août 1955 fixant les modalités d'application de la loi n° 54-418 du 15 avril 1954 étendant aux territoires d'outre-mer, au Togo et au Cameroun certaines dispositions du code de la santé publique relatives à l'exercice de la pharmacie4. Depuis sont intervenues la loi- cadre Defferre5, la loi référendaire de 19886 et la loi organique n° 99-209 du 19 mars 1999 dont les apports ont eu pour résultat le transfert de ces articles de la compétence de l’Etat à la compétence de la Nouvelle-Calédonie, permettant à celle-ci de s’en approprier et de les modifier à sa guise par des délibérations du congrès de la Nouvelle-Calédonie7.