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(12) Patent Application Publication (10) Pub. No.: US 2017/0020892 A1 Thompson Et Al
US 20170020892A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2017/0020892 A1 Thompson et al. (43) Pub. Date: Jan. 26, 2017 (54) USE OF NEGATIVE MODULATORS OF Related U.S. Application Data GABA RECEPTORS CONTAINING ALPHAS SUBUNITS AS FAST ACTING (60) Provisional application No. 61/972,446, filed on Mar. ANTDEPRESSANTS 31, 2014. (71) Applicant: University of Maryland, Baltimore, Publication Classification Baltimore, MD (US) (51) Int. Cl. A 6LX 3/557 (2006.01) (72) Inventors: Scott Thompson, Baltimore, MD (US); A6II 3/53 (2006.01) Mark D. Kvarta, Ellicott City, MD A6II 45/06 (2006.01) (US); Adam Van Dyke, Baltimore, MD (52) U.S. Cl. (US) CPC ........... A61 K3I/55.17 (2013.01); A61K 45/06 (2013.01); A61 K3I/53 (2013.01) (73) Assignee: University of Maryland, Baltimore, Baltimore, MD (US) (57) ABSTRACT Embodiments of the disclosure include methods and com (21) Appl. No.: 15/300,984 positions related to treatment of one or more medical conditions with one or more negative modulators of GABA (22) PCT Filed: Mar. 31, 2015 receptors. In specific embodiments, depression and/or Sui cidability is treated or ameliorated or prevented with one or (86) PCT No.: PCT/US2O15/023667 more negative modulators of GABA receptors, such as a S 371 (c)(1), partial inverse agonist of a GABA receptor comprising an (2) Date: Sep. 30, 2016 alpha5 subunit. Patent Application Publication Jan. 26, 2017. Sheet 1 of 12 US 2017/002O892 A1 ×1/ /|\ Patent Application Publication Jan. 26, 2017. Sheet 3 of 12 US 2017/002O892 A1 & Patent Application Publication Jan. -
An Investigation Into Pro-Apoptotic Targets in Experimental Glaucoma and the Neuroprotective Effects of Ginkgo Biloba in Retinal Ganglion Cells
An investigation into pro-apoptotic targets in experimental glaucoma and the neuroprotective effects of Ginkgo biloba in retinal ganglion cells Abeir Baltmr MB ChB, FRCS (Glasg) A thesis submitted to University College London for the degree of Doctor of Medicine (Research) 2012 Glaucoma and Retinal Neurodegeneration Research Group Visual Neuroscience Institute of Ophthalmology 1 Declaration I, Abeir Baltmr, confirm that the work presented in this thesis is my own. Where information has been derived from other sources, I confirm that this has been indicated in the thesis. Abeir Baltmr 2 Abstract Ginkgo biloba has been advocated as a neuroprotective agent for several years in glaucoma. In this study, immunohistochemistry was used to identify known potential molecular targets of Ginkgo biloba related to retinal ganglion cell (RGC) apoptosis in experimental glaucoma, including amyloid precursor protein (APP), Aß, cytochrome c, caspase-3 and tumor necrosis factor receptor-1 (TNF-R1). Furthermore, using apoptotic inducers related to mechanisms implicated in glaucoma, namely Dimethyl sulphoxide (DMSO), ultraviolet C (UVC) and Sodium Azide (NaN3), the effects of the terpenoid fraction of Ginkgo biloba (Ginkgolide A, Ginkgolide B and Bilobalide) were investigated separately in cultured retinal ganglion cells (RGC-5). Cell viability was determined by 3-(4,5-dimethylthiazol-2-yl)-2,5- diphenyltetrazolium bromide (MTT) assay and morphological analysis of DMSO treated RGC-5 was performed using Hoechst 33342 stain. Immunohistochemistry showed a strong inverse correlation between Aß and APP in ocular hypertension (OHT) animals, with APP and Aß accumulation peaking at 1 and 12 weeks after intraocular pressure (IOP) elevation respectively. Cytochrome c and TNF-R1 expression peaked at 3 weeks, and active caspase 3 activity at 12 weeks after IOP elevation. -
Ginkgolide B Increases Hydrogen Sulfide and Protects Against Endothelial Dysfunction in Diabetic Rats
4 DISEASE-RELATED CHANGES IN BLOOD VESSELS Croat Med J. 2015;56:4-13 doi: 10.3325/cmj.2015.56.4 Ginkgolide B increases Guo-Guang Wang1*, Qing- Ying Chen2*, Wei Li1, Xiao- hydrogen sulfide and protects Hua Lu1, Xue Zhao1 1Department of Pathophysiology, against endothelial dysfunction Wannan Medical College, Wuhu, in diabetic rats People’s Republic of China 2General Hospital of Jinan Military Command, Jinan, People’s Republic of China *Contributed equally to the study. Aim To evaluate the effect of ginkgolide B treatment on vascular endothelial function in diabetic rats. Methods The study included four groups with 15 male Sprague-Dawley rats: control group; control group treat- ed with ginkgolide B; diabetic group; and diabetic treat- ed with ginkgolide B. The activity of superoxide dismutase (SOD), malondialdehyde content, and nicotinamide ade- nine dinucleotide phosphate (NADPH) oxidase subunits, and glutathione peroxidase 1 (GPX1) protein expression were determined in aortic tissues. Vasoconstriction to phe- nylephrine (PHE) and vasorelaxation to acetylcholine (Ach) and sodium nitroprusside (SNP) were assessed in aortic rings. Nitric oxide (NO) and hydrogen sulfide (H2S) were measured, as well as cystathionine γ lyase (CSE) and cys- tathionine β synthetase (CBS) protein expression, and en- dothelial nitric oxide synthase (eNOS) activity. Results Diabetes significantly impaired PHE-induced va- soconstriction and Ach-induced vasorelaxation (P < 0.001), reduced NO bioavailability and H2S production (P < 0.001), SOD activity, and GPX1 protein expression (P < 0.001), and increased malondialdehyde content and NADPH oxidase subunits, and CSE and CBS protein expression (P < 0.001). Ginkgolide B treatment improved PHE vasoconstriction and Ach vasorelaxation (P < 0.001), restored SOD (P = 0.005) and eNOS (P < 0.001) activities, H2S production (P = 0.044) and decreased malondialdehyde content (P = 0.014). -
Mixed Antagonistic Effects of the Ginkgolides at Recombinant Human R1 GABAC Receptors
Neuropharmacology 63 (2012) 1127e1139 Contents lists available at SciVerse ScienceDirect Neuropharmacology journal homepage: www.elsevier.com/locate/neuropharm Mixed antagonistic effects of the ginkgolides at recombinant human r1 GABAC receptors Shelley H. Huang a, Trevor M. Lewis b, Sarah C.R. Lummis c, Andrew J. Thompson c, Mary Chebib d, Graham A.R. Johnston a, Rujee K. Duke a,* a Discipline of Pharmacology, School of Medical Sciences, Faculty of Medicine, University of Sydney, Australia b School of Medical Sciences, University of New South Wales, Australia c Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom d Faculty of Pharmacy, University of Sydney, Australia article info abstract Article history: The diterpene lactones of Ginkgo biloba, ginkgolides A, B and C are antagonists at a range of Cys-loop Received 11 July 2011 receptors. This study examined the effects of the ginkgolides at recombinant human r1 GABAC recep- Received in revised form tors expressed in Xenopus oocytes using two-electrode voltage clamp. The ginkgolides were moderately 18 June 2012 potent antagonists with IC sinthemM range. At 10 mM, 30 mM and 100 mM, the ginkgolides caused Accepted 24 June 2012 50 rightward shifts of GABA doseeresponse curves and reduced maximal GABA responses, characteristic of noncompetitive antagonists, while the potencies showed a clear dependence on GABA concentration, Keywords: indicating apparent competitive antagonism. This suggests that the ginkgolides exert a mixed-type Ginkgolide Bilobalide antagonism at the r1 GABAC receptors. The ginkgolides did not exhibit any obvious use-dependent Mixed-antagonism inhibition. Fitting of the data to a number of kinetic schemes suggests an allosteric inhibition as Use-dependent a possible mechanism of action of the ginkgolides which accounts for their inhibition of the responses GABAr receptor without channel block or use-dependent inhibition. -
Total Syntheses of Ginkgolide B
Total Syntheses of Ginkgolide B O HO O HO O H O t-Bu Me O HO O O H Brooks Maki May 23, 2005 Outline • What? – Background of Ginkgolides • Why? – Points of interest concerning Ginkgolide B • Who? (When?) – Corey’s racemic synthesis (1988) – Corey’s enantioselective synthesis (1988) – Crimmins’ racemic synthesis (2000) • How? – 2 total syntheses – 1 formal synthesis Isolation and Characterization • Ginkgolides A, B, C, and M were isolated from O HO O the root bark of Ginkgo biloba by Furukawa in R2 O H O 1932. t-Bu Me O R1 • Nakanishi and co-workers identified structures R3 of these diterpenes in 1967. O O H Ginkgolide A - R1 = OH, R2 = H, R3 = H Ginkgolide B - R1 = OH, R2 = OH, R3 = H • Also in 1967, Okabe and colleagues published Ginkgolide C - R1 = OH, R2 = OH, R3 = OH X-ray crystallography studies confirming Ginkgolide M - R1 = H, R2 = OH, R3 = OH structure and absolute stereochemistry of the Ginkgolide J - R1 = OH, R2 = H, R3 = OH ginkgolides. H O O O • Bilobalide (in 1971) and Ginkgolide J (in O O 1987) have been discovered as other members OH O t-Bu of the ginkgolide family. H OH Furukawa, S. Sci. Papers Inst. Phys. Chem. Res. Tokyo 1932, 19, 27. Bilobalide Nakanishi, K. Pure Appl. Chem. 1967, 14, 89-113. Sakabe, N.; Takada, S.; Okabe, K. J. Chem. Soc., Chem. Commun. 1967, 259-261 Ginkgo Biloba: The Source • Oldest fossil records from 270 million years ago • Basically unchanged since the Jurassic period. • Extracts known to have medicinal value for nearly 2500 years (China, Japan, and India) • Survived atomic blast at Hiroshima in 1945. -
Beneficial Effects of Ginkgo Biloba Extract on Insulin Signaling Cascade, Dyslipidemia, and Body Adiposity of Diet-Induced Obese Rats
Brazilian Journal of Medical and Biological Research (2014) 47(9): 780-788, http://dx.doi.org/10.1590/1414-431X20142983 ISSN 1414-431X Beneficial effects of Ginkgo biloba extract on insulin signaling cascade, dyslipidemia, and body adiposity of diet-induced obese rats R.M. Banin1, B.K.S. Hirata1, I.S. Andrade2, J.C.S. Zemdegs2, A.P.G. Clemente4, A.P.S. Dornellas2, V.T. Boldarine2, D. Estadella3, K.T. Albuquerque5, L.M. Oyama2, E.B. Ribeiro2 and M.M. Telles1 1Departamento de Cieˆncias Biolo´gicas, Universidade Federal de Sa˜o Paulo, Diadema, SP, Brasil 2Disciplina de Fisiologia da Nutric¸a˜o, Departamento de Fisiologia, Universidade Federal de Sa˜o Paulo, Sa˜o Paulo, SP, Brasil 3Departamento de Biocieˆncias, Universidade Federal de Sa˜o Paulo, Baixada Santista, SP, Brasil 4Faculdade de Nutric¸a˜o, Universidade Federal de Alagoas, Maceio´, AL, Brasil 5Curso de Nutric¸a˜o, Universidade Federal do Rio de Janeiro, Macae´, RJ, Brasil Abstract Ginkgo biloba extract (GbE) has been indicated as an efficient medicine for the treatment of diabetes mellitus type 2. It remains unclear if its effects are due to an improvement of the insulin signaling cascade, especially in obese subjects. The aim of the present study was to evaluate the effect of GbE on insulin tolerance, food intake, body adiposity, lipid profile, fasting insulin, and muscle levels of insulin receptor substrate 1 (IRS-1), protein tyrosine phosphatase 1B (PTP-1B), and protein kinase B (Akt), as well as Akt phosphorylation, in diet-induced obese rats. Rats were fed with a high-fat diet (HFD) or a normal fat diet (NFD) for 8 weeks. -
Calcium-Engaged Mechanisms of Nongenomic Action of Neurosteroids
Calcium-engaged Mechanisms of Nongenomic Action of Neurosteroids The Harvard community has made this article openly available. Please share how this access benefits you. Your story matters Citation Rebas, Elzbieta, Tomasz Radzik, Tomasz Boczek, and Ludmila Zylinska. 2017. “Calcium-engaged Mechanisms of Nongenomic Action of Neurosteroids.” Current Neuropharmacology 15 (8): 1174-1191. doi:10.2174/1570159X15666170329091935. http:// dx.doi.org/10.2174/1570159X15666170329091935. Published Version doi:10.2174/1570159X15666170329091935 Citable link http://nrs.harvard.edu/urn-3:HUL.InstRepos:37160234 Terms of Use This article was downloaded from Harvard University’s DASH repository, and is made available under the terms and conditions applicable to Other Posted Material, as set forth at http:// nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of- use#LAA 1174 Send Orders for Reprints to [email protected] Current Neuropharmacology, 2017, 15, 1174-1191 REVIEW ARTICLE ISSN: 1570-159X eISSN: 1875-6190 Impact Factor: 3.365 Calcium-engaged Mechanisms of Nongenomic Action of Neurosteroids BENTHAM SCIENCE Elzbieta Rebas1, Tomasz Radzik1, Tomasz Boczek1,2 and Ludmila Zylinska1,* 1Department of Molecular Neurochemistry, Faculty of Health Sciences, Medical University of Lodz, Poland; 2Boston Children’s Hospital and Harvard Medical School, Boston, USA Abstract: Background: Neurosteroids form the unique group because of their dual mechanism of action. Classically, they bind to specific intracellular and/or nuclear receptors, and next modify genes transcription. Another mode of action is linked with the rapid effects induced at the plasma membrane level within seconds or milliseconds. The key molecules in neurotransmission are calcium ions, thereby we focus on the recent advances in understanding of complex signaling crosstalk between action of neurosteroids and calcium-engaged events. -
Great Basin Naturalist Memoirs Volume 11 a Catalog of Scolytidae and Platypodidae Article 6 (Coleoptera), Part 1: Bibliography
Great Basin Naturalist Memoirs Volume 11 A Catalog of Scolytidae and Platypodidae Article 6 (Coleoptera), Part 1: Bibliography 1-1-1987 M–Q Stephen L. Wood Life Science Museum and Department of Zoology, Brigham Young University, Provo, Utah 84602 Donald E. Bright Jr. Biosystematics Research Centre, Canada Department of Agriculture, Ottawa, Ontario, Canada 51A 0C6 Follow this and additional works at: https://scholarsarchive.byu.edu/gbnm Part of the Anatomy Commons, Botany Commons, Physiology Commons, and the Zoology Commons Recommended Citation Wood, Stephen L. and Bright, Donald E. Jr. (1987) "M–Q," Great Basin Naturalist Memoirs: Vol. 11 , Article 6. Available at: https://scholarsarchive.byu.edu/gbnm/vol11/iss1/6 This Chapter is brought to you for free and open access by the Western North American Naturalist Publications at BYU ScholarsArchive. It has been accepted for inclusion in Great Basin Naturalist Memoirs by an authorized editor of BYU ScholarsArchive. For more information, please contact [email protected], [email protected]. 1987 Wool), BRIGHT: CATALOG BIBLIOGRAPHY, M 371 M M. 1845. Die gegen die Vermehrung des Borkenkafers zu Chemical Ecology 3(5):549-561. (bv). - 1 1 ergreifenden Massnahmen.-beforberungen. A MacConnell, John G , and Robert Milton Silver- gemeine Forst- und Jagdzeitung, Frankfurt 1845: stein. 1973. Recent results in insect pheromone 236-237. (en). chemistry. Angewandte Chemie Internal. Edit *M. 1908. Lykozrout, pestitele hub [Die Borkenkafer als 12:644-654. (bv). Zuchter von Ambrosiapilzen]. Les a Lov 1:229- •MacDonald. D. W, 1948. Dutch elm disease. Family 230. (). Herald Weekly Star 79(7):3. 17. (). *M N 1950. Why and how arc the fruit-trees and berry- MacDougall. -
Preparation Process for Oral Dissolving Film of Ginkgolide B for Treatment of Alzheimer's Disease
Acta Medica Mediterranea, 2020, 36: 1223 PREPARATION PROCESS FOR ORAL DISSOLVING FILM OF GINKGOLIDE B FOR TREATMENT OF ALZHEIMER'S DISEASE JUNTONG ZHOU1, QINMEI XU1, YUE WANG1, 2, ZHENPENG WANG3, JIAYANG LI4, SHAN YU1, KEXIN LIU1, CHI LI1, SHUHUI LI1, YUAN ZHANG1, XINTONG QU1, YE TIAN1, ZHAOXUAN FENG1, QING HUO1, 2* 1Biochemical Engineering College, Beijing Union University, Beijing, P. R. China - 2Beijing Key Laboratory of Biomass Waste Resource Utilization, Beijing, P. R. China - 3Institute of Chemistry, Chinese Academy of Sciences, Beijing, P.R. China - 4CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety & CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing, China ABSTRACT Objective: Ginkgolide B (GB) has been applied to cardiovascular diseases in clinic with its anti-oxidative and anti-aging effects. GB plays a neuroprotective role in models of various diseases. A study showns that Aβ1-42 induces oxidative damage to the cellular biomolecules, which are associated with AD pathology, and are protected by the pre-treatment of GB against Aβ-toxicity. We prepared the oral dissolving film (ODF) of GB by tape casting. The influence of film forming material, plasticizer and defoamer on the perfor - mance of the ODF of GB was studied. ODF has better adherence and is easy to take, which provides certain reference value for future nerve agents. Methods: The preparation parameters were as follows: 35mg GB was dissolved with 70ml of distilled water and mixed well, which was followed by the addition of 0.5g of glycerol as the plasticizer. After complete dissolution, 2g of hydroxypropyl methylcel - lulose was added as the film forming material. -
Handbook of Schizophrenia Spectrum Disorders, Volume III
Handbook of Schizophrenia Spectrum Disorders, Volume III Michael S. Ritsner Editor Handbook of Schizophrenia Spectrum Disorders, Volume III Therapeutic Approaches, Comorbidity, and Outcomes 123 Editor Michael S. Ritsner Technion – Israel Institute of Technology Rappaport Faculty of Medicine Haifa Israel [email protected] ISBN 978-94-007-0833-4 e-ISBN 978-94-007-0834-1 DOI 10.1007/978-94-007-0834-1 Springer Dordrecht Heidelberg London New York Library of Congress Control Number: 2011924745 © Springer Science+Business Media B.V. 2011 No part of this work may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, microfilming, recording or otherwise, without written permission from the Publisher, with the exception of any material supplied specifically for the purpose of being entered and executed on a computer system, for exclusive use by the purchaser of the work. Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com) Foreword Schizophrenia Spectrum Disorders: Insights from Views Across 100 years Schizophrenia spectrum and related disorders such as schizoaffective and mood dis- orders, schizophreniform disorders, brief psychotic disorders, delusional and shared psychotic disorders, and personality (i.e., schizotypal, paranoid, and schizoid per- sonality) disorders are the most debilitating forms of mental illness, worldwide. There are 89,377 citations (including 10,760 reviews) related to “schizophrenia” and 2118 (including 296 reviews) related to “schizophrenia spectrum” in PubMed (accessed on August 12, 2010). The classification of these disorders, in particular, of schizophrenia, schizoaf- fective and mood disorders (referred to as functional psychoses), has been debated for decades, and its validity remains controversial. -
Ginkgolide B Modulates BDNF Expression in Acute Ischemic Stroke
Laboratory Investigation J Korean Neurosurg Soc 60 (4) : 391-396, 2017 https://doi.org/10.3340/jkns.2016.1010.018 pISSN 2005-3711 eISSN 1598-7876 Ginkgolide B Modulates BDNF Expression in Acute Ischemic Stroke Hu Wei, M.D.,1 Tao Sun, M.D.,2 Yanghua Tian, M.D.,3 Kai Wang, M.D.3 Department of Neurology,1 Affiliated Provincial Hospital of Anhui Medical University, Hefei, China Department of Neurology,2 Nanjing General Hospital of Nanjing Command, Nanjing, China Department of Neurology,3 the First Hospital of Anhui Medical University, Hefei, China Objective : To investigate the neuroprotective effects of Ginkgolide B (GB) against ischemic stroke-induced injury in vivo and in vitro, and further explore the possible mechanisms concerned. Methods : Transient middle cerebral artery occlusion (tMCAO) mice and oxygen-glucose deprivation/reoxygenation (OGD/R)- treated N2a cells were used to explore the neuroprotective effects of GB. The expression of brain-derived neurotrophic factor (BDNF) was detected via Western blot and qRT-PCR. Results : GB treatment (4 mg/kg, i. p., bid) significantly reduced neurological deficits, water content, and cerebral infarct volume in tMCAO mice. GB also significantly increased Bcl-2/Bax ratio, reduced the expression of caspase-3, and protected against OGD/ R-induced neuronal apoptosis. Meanwhile, GB caused the up-regulation of BDNF protein in vivo and in vitro. Conclusion : Our data suggest that GB might protect the brain against ischemic insult partly via modulating BDNF expression. Key Words : Stroke · Ginkgolide B · Brain-derived neurotrophic factor · Apoptosis. INTRODUCTION detailed understanding of the mechanisms involved will have a substantial effect in the optimization and development of Ischemic stroke is the most common acute neurologic dis- treatment strategies. -
Options for Managing Antestiopsis Thunbergii (Hemiptera: Pentatomidae) and the Relationship of Bug Density to the Occurrence of Potato Taste Defect in Coffee
Options for Managing Antestiopsis thunbergii (Hemiptera: Pentatomidae) and the Relationship of Bug Density to the Occurrence of Potato Taste Defect in Coffee Authors: Joseph Bigirimana, Andrew Gerard, David Mota-Sanchez, and Larry J. Gut Source: Florida Entomologist, 101(4) : 580-586 Published By: Florida Entomological Society URL: https://doi.org/10.1653/024.101.0418 BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses. Your use of this PDF, the BioOne Complete website, and all posted and associated content indicates your acceptance of BioOne’s Terms of Use, available at www.bioone.org/terms-of-use. Usage of BioOne Complete content is strictly limited to personal, educational, and non-commercial use. Commercial inquiries or rights and permissions requests should be directed to the individual publisher as copyright holder. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research. Downloaded From: https://bioone.org/journals/Florida-Entomologist on 1/24/2019 Terms of Use: https://bioone.org/terms-of-use Options for managing Antestiopsis thunbergii (Hemiptera: Pentatomidae) and the relationship of bug density to the occurrence of potato taste defect in coffee Joseph Bigirimana1,*, Andrew Gerard2, David Mota-Sanchez1, and Larry J. Gut1 Abstract Potato taste defect is a potato-like smell found in green and roasted coffee beans. Potato taste defect reduces the flavor experience of finished coffee and causes it to be rejected by consumers.