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Oleoresins and Naturally Occurring Compounds of Copaifera Genus As
www.nature.com/scientificreports OPEN Oleoresins and naturally occurring compounds of Copaifera genus as antibacterial and antivirulence agents against periodontal pathogens Fariza Abrão1, Thayná Souza Silva1, Claudia L. Moura1, Sérgio Ricardo Ambrósio2, Rodrigo Cassio Sola Veneziani2, Raphael E. F. de Paiva3, Jairo Kenupp Bastos4 & Carlos Henrique Gomes Martins1,5* Invasion of periodontal tissues by Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans can be associated with aggressive forms of periodontitis. Oleoresins from diferent copaifera species and their compounds display various pharmacological properties. The present study evaluates the antibacterial and antivirulence activity of oleoresins obtained from diferent copaifera species and of ten isolated compounds against two causative agents of periodontitis. The following assays were performed: determination of the minimum inhibitory concentration (MIC), determination of the minimum bactericidal concentration (MBC), and determination of the antibioflm activity by inhibition of bioflm formation and bioflm eradication tests. The antivirulence activity was assessed by hemagglutination, P. gingivalis Arg-X and Lis-X cysteine protease inhibition assay, and A. actinomycetemcomitans leukotoxin inhibition assay. The MIC and MBC of the oleoresins and isolated compounds 1, 2, and 3 ranged from 1.59 to 50 μg/ mL against P. gingivalis (ATCC 33277) and clinical isolates and from 6.25 to 400 μg/mL against A. actinomycetemcomitans (ATCC 43717) and clinical isolates. About the antibioflm activity, the oleoresins and isolated compounds 1, 2, and 3 inhibited bioflm formation by at least 50% and eradicated pre-formed P. gingivalis and A. actinomycetemcomitans bioflms in the monospecies and multispecies modes. A promising activity concerning cysteine protease and leucotoxin inhibition was also evident. In addition, molecular docking analysis was performed. -
Quercetin Inhibits Virulence Properties of Porphyromas Gingivalis In
www.nature.com/scientificreports OPEN Quercetin inhibits virulence properties of Porphyromas gingivalis in periodontal disease Zhiyan He1,2,3,7, Xu Zhang1,2,3,7, Zhongchen Song2,3,4, Lu Li5, Haishuang Chang6, Shiliang Li5* & Wei Zhou1,2,3* Porphyromonas gingivalis is a causative agent in the onset and progression of periodontal disease. This study aims to investigate the efects of quercetin, a natural plant product, on P. gingivalis virulence properties including gingipain, haemagglutinin and bioflm formation. Antimicrobial efects and morphological changes of quercetin on P. gingivalis were detected. The efects of quercetin on gingipains activities and hemolytic, hemagglutination activities were evaluated using chromogenic peptides and sheep erythrocytes. The bioflm biomass and metabolism with diferent concentrations of quercetin were assessed by the crystal violet and MTT assay. The structures and thickness of the bioflms were observed by confocal laser scanning microscopy. Bacterial cell surface properties including cell surface hydrophobicity and aggregation were also evaluated. The mRNA expression of virulence and iron/heme utilization was assessed using real time-PCR. Quercetin exhibited antimicrobial efects and damaged the cell structure. Quercetin can inhibit gingipains, hemolytic, hemagglutination activities and bioflm formation at sub-MIC concentrations. Molecular docking analysis further indicated that quercetin can interact with gingipains. The bioflm became sparser and thinner after quercetin treatment. Quercetin also modulate cell surface hydrophobicity and aggregation. Expression of the genes tested was down-regulated in the presence of quercetin. In conclusion, our study demonstrated that quercetin inhibited various virulence factors of P. gingivalis. Periodontal disease is a common chronic infammatory disease that characterized swelling and bleeding of the gums clinically, and leading to the progressive destruction of tooth-supporting tissues including the gingiva, alveolar bone, periodontal ligament, and cementum. -
Propeptide-Mediated Inhibition of Cognate Gingipain Proteinases
Propeptide-Mediated Inhibition of Cognate Gingipain Proteinases N. Laila Huq, Christine A. Seers, Elena C. Y. Toh, Stuart G. Dashper, Nada Slakeski, Lianyi Zhang, Brent R. Ward, Vincent Meuric, Dina Chen, Keith J. Cross, Eric C. Reynolds* Oral Health Cooperative Research Centre, Melbourne Dental School, Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, Victoria, Australia Abstract Porphyromonas gingivalis is a major pathogen associated with chronic periodontitis. The organism’s cell-surface cysteine proteinases, the Arg-specific proteinases (RgpA, RgpB) and the Lys-specific proteinase (Kgp), which are known as gingipains have been implicated as major virulence factors. All three gingipain precursors contain a propeptide of around 200 amino acids in length that is removed during maturation. The aim of this study was to characterize the inhibitory potential of the Kgp and RgpB propeptides against the mature cognate enzymes. Mature Kgp was obtained from P. gingivalis mutant ECR368, which produces a recombinant Kgp with an ABM1 motif deleted from the catalytic domain (rKgp) that enables the otherwise membrane bound enzyme to dissociate from adhesins and be released. Mature RgpB was obtained from P. gingivalis HG66. Recombinant propeptides of Kgp and RgpB were produced in Escherichia coli and purified using nickel- affinity chromatography. The Kgp and RgpB propeptides displayed non-competitive inhibition kinetics with Ki values of 2.04 mM and 12 nM, respectively. Both propeptides exhibited selectivity towards their cognate proteinase. The specificity of both propeptides was demonstrated by their inability to inhibit caspase-3, a closely related cysteine protease, and papain that also has a relatively long propeptide. -
43Rd Annual Scientific and Standardization Committee Meeting
43rd Annual Scientific and Standardization Committee Meeting June 67, 1997 Florence, Italy SCIENTIFIC SUBCOMMITTEE MINUTES 6‐7 June 1997, Florence, Italy Table of Contents Registry of Animal Models of Thrombotic and Hemorrhagic Disorders ....................................................... 2 Biorheology ................................................................................................................................................... 4 Contact Activation ......................................................................................................................................... 7 Control of Anticoagulation ............................................................................................................................ 9 Exogenous Hemostatic Factors Subcommittee: Registry .......................................................................... 15 Factor VIII and Factor IX .............................................................................................................................. 18 Factor XIII .................................................................................................................................................... 22 Fibrinogen and DIC ...................................................................................................................................... 25 Fibrinolysis .................................................................................................................................................. 28 Hemostasis and Malignancy -
Helical Domain That Prevents Access to the Substrate-Binding Cleft
View metadata, citation and similar papers at core.ac.uk brought to you by CORE Researchprovided Article by Elsevier1193 - Publisher Connector The prosequence of procaricain forms an a-helical domain that prevents access to the substrate-binding cleft Matthew R Groves, Mark AJ Taylor, Mandy Scott, Nicola J Cummings Richard W Pickersgill* and John A Jenkins* Background: Cysteine proteases are involved in a variety of cellular processes Address: Department of Food Macromolecular including cartilage degradation in arthritis, the progression of Alzheimer’s Science, Institute of Food Research, Earley Gate, disease and cancer invasion: these enzymes are therefore of immense biological Whiteknights Road, Reading, RG6 6BZ, UK. importance. Caricain is the most basic of the cysteine proteases found in the *Corresponding authors. latex of Carica papaya. It is a member of the papain superfamily and is E-mail: [email protected] homologous to other plant and animal cysteine proteases. Caricain is naturally [email protected] expressed as an inactive zymogen called procaricain. The inactive form of the Key words: caricain, cysteine protease, density protease contains an inhibitory proregion which consists of an additional 106 modification, X-ray structure, zymogen N-terminal amino acids; the proregion is removed upon activation. Received: 25 June 1996 Results: The crystal structure of procaricain has been refined to 3.2 Å Revisions requested: 23 July 1996 Revisions received: 12 August 1996 resolution; the final model consists of three non-crystallographically related Accepted: 28 August 1996 molecules. The proregion of caricain forms a separate globular domain which binds to the C-terminal domain of mature caricain. -
Serine Proteases with Altered Sensitivity to Activity-Modulating
(19) & (11) EP 2 045 321 A2 (12) EUROPEAN PATENT APPLICATION (43) Date of publication: (51) Int Cl.: 08.04.2009 Bulletin 2009/15 C12N 9/00 (2006.01) C12N 15/00 (2006.01) C12Q 1/37 (2006.01) (21) Application number: 09150549.5 (22) Date of filing: 26.05.2006 (84) Designated Contracting States: • Haupts, Ulrich AT BE BG CH CY CZ DE DK EE ES FI FR GB GR 51519 Odenthal (DE) HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI • Coco, Wayne SK TR 50737 Köln (DE) •Tebbe, Jan (30) Priority: 27.05.2005 EP 05104543 50733 Köln (DE) • Votsmeier, Christian (62) Document number(s) of the earlier application(s) in 50259 Pulheim (DE) accordance with Art. 76 EPC: • Scheidig, Andreas 06763303.2 / 1 883 696 50823 Köln (DE) (71) Applicant: Direvo Biotech AG (74) Representative: von Kreisler Selting Werner 50829 Köln (DE) Patentanwälte P.O. Box 10 22 41 (72) Inventors: 50462 Köln (DE) • Koltermann, André 82057 Icking (DE) Remarks: • Kettling, Ulrich This application was filed on 14-01-2009 as a 81477 München (DE) divisional application to the application mentioned under INID code 62. (54) Serine proteases with altered sensitivity to activity-modulating substances (57) The present invention provides variants of ser- screening of the library in the presence of one or several ine proteases of the S1 class with altered sensitivity to activity-modulating substances, selection of variants with one or more activity-modulating substances. A method altered sensitivity to one or several activity-modulating for the generation of such proteases is disclosed, com- substances and isolation of those polynucleotide se- prising the provision of a protease library encoding poly- quences that encode for the selected variants. -
HMGB1 in Health and Disease R
Donald and Barbara Zucker School of Medicine Journal Articles Academic Works 2014 HMGB1 in health and disease R. Kang R. C. Chen Q. H. Zhang W. Hou S. Wu See next page for additional authors Follow this and additional works at: https://academicworks.medicine.hofstra.edu/articles Part of the Emergency Medicine Commons Recommended Citation Kang R, Chen R, Zhang Q, Hou W, Wu S, Fan X, Yan Z, Sun X, Wang H, Tang D, . HMGB1 in health and disease. 2014 Jan 01; 40():Article 533 [ p.]. Available from: https://academicworks.medicine.hofstra.edu/articles/533. Free full text article. This Article is brought to you for free and open access by Donald and Barbara Zucker School of Medicine Academic Works. It has been accepted for inclusion in Journal Articles by an authorized administrator of Donald and Barbara Zucker School of Medicine Academic Works. Authors R. Kang, R. C. Chen, Q. H. Zhang, W. Hou, S. Wu, X. G. Fan, Z. W. Yan, X. F. Sun, H. C. Wang, D. L. Tang, and +8 additional authors This article is available at Donald and Barbara Zucker School of Medicine Academic Works: https://academicworks.medicine.hofstra.edu/articles/533 NIH Public Access Author Manuscript Mol Aspects Med. Author manuscript; available in PMC 2015 December 01. NIH-PA Author ManuscriptPublished NIH-PA Author Manuscript in final edited NIH-PA Author Manuscript form as: Mol Aspects Med. 2014 December ; 0: 1–116. doi:10.1016/j.mam.2014.05.001. HMGB1 in Health and Disease Rui Kang1,*, Ruochan Chen1, Qiuhong Zhang1, Wen Hou1, Sha Wu1, Lizhi Cao2, Jin Huang3, Yan Yu2, Xue-gong Fan4, Zhengwen Yan1,5, Xiaofang Sun6, Haichao Wang7, Qingde Wang1, Allan Tsung1, Timothy R. -
Clinical Outcomes, Symptoms and Quality of Life in Cancer Patients with Incidental Pulmonary Embolism
A STUDY OF CLINICOPATHOLOGICAL CHARACTERISTICS, SYMPTOMS AND PATIENTS EXPERIENCES RELATED TO OUTCOMES IN PEOPLE WITH CANCER AND I-PE Naima E Benelhaj PhD The University of Hull and The University of York Hull York Medical School July 2019 Abstract Background: The clinical course of incidental pulmonary embolism in cancer population represents an area of controversy. It presents a growing challenge for clinicians because of a lack of prospective data. Aim: This research aims to investigate the impact of an incidentally diagnosed pulmonary embolism on cancer population’ outcomes and to explore their experience of living with cancer and i-PE. The second aim was to explore the role of the key thrombogenic biomarkers as a predictive biomarker of thrombosis. Methods: Mixed method research with critical integrative analysis. A systematic literature review and qualitative analysis to examine patients’ experience of living with cancer-associated thrombosis. A prospective observational case-controlled cohort study with embedded semi-structured interview study to investigate the quality of life and patients’ experience of living with cancer and incidental pulmonary embolism. A retrospective case control-study and scientific analysis of defined biological key factors associated with thrombosis. Results: The diagnosis of cancer-associated thrombosis including incidental pulmonary embolism negatively affect patients’ life, and patients experience this diagnosis in the context of living with cancer. Yet it is a diagnosis that often misattributed, misdiagnosed and associated with lack of information among patients and some of the clinical care professionals. The scientific analysis of the biological biomarkers illustrates the potential role of TF-mRNA as a predictive biomarker for cancer- associated incidental pulmonary embolism and the role of anti-factor ten anticoagulation in reducing the risk of thrombosis. -
Current IUBMB Recommendations on Enzyme Nomenclature and Kinetics$
Perspectives in Science (2014) 1,74–87 Available online at www.sciencedirect.com www.elsevier.com/locate/pisc REVIEW Current IUBMB recommendations on enzyme nomenclature and kinetics$ Athel Cornish-Bowden CNRS-BIP, 31 chemin Joseph-Aiguier, B.P. 71, 13402 Marseille Cedex 20, France Received 9 July 2013; accepted 6 November 2013; Available online 27 March 2014 KEYWORDS Abstract Enzyme kinetics; The International Union of Biochemistry (IUB, now IUBMB) prepared recommendations for Rate of reaction; describing the kinetic behaviour of enzymes in 1981. Despite the more than 30 years that have Enzyme passed since these have not subsequently been revised, though in various respects they do not nomenclature; adequately cover current needs. The IUBMB is also responsible for recommendations on the Enzyme classification naming and classification of enzymes. In contrast to the case of kinetics, these recommenda- tions are kept continuously up to date. & 2014 The Author. Published by Elsevier GmbH. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/). Contents Introduction...................................................................75 Kinetics introduction...........................................................75 Introduction to enzyme nomenclature ................................................76 Basic definitions ................................................................76 Rates of consumption and formation .................................................76 Rate of reaction .............................................................76 -
Felipe Jun Fuzita Molecular Physiology of Digestion In
FELIPE JUN FUZITA MOLECULAR PHYSIOLOGY OF DIGESTION IN ARACHNIDA: FUNCTIONAL AND COMPARATIVE-EVOLUTIONARY APPROACHES Thesis presented to the Programa de Pós-Graduação Interunidades em Biotecnologia USP/Instituto Butantan/IPT, to obtain the Title of Doctor in Biotechnology. São Paulo 2014 FELIPE JUN FUZITA MOLECULAR PHYSIOLOGY OF DIGESTION IN ARACHNIDA: FUNCTIONAL AND COMPARATIVE-EVOLUTIONARY APPROACHES Thesis presented to the Programa de Pós-Graduação Interunidades em Biotecnologia USP/Instituto Butantan/IPT, to obtain the Title of Doctor in Biotechnology. Concentration area: Biotechnology Advisor: Dr. Adriana Rios Lopes Rocha Corrected version. The original electronic version is available either in the library of the Institute of Biomedical Sciences and in the Digital Library of Theses and Dissertations of the University of Sao Paulo (BDTD). São Paulo 2014 DADOS DE CATALOGAÇÃO NA PUBLICAÇÃO (CIP) Serviço de Biblioteca e Informação Biomédica do Instituto de Ciências Biomédicas da Universidade de São Paulo © reprodução total Fuzita, Felipe Jun. Molecular physiology of digestion in Arachnida: functional and comparative-evolutionary approaches / Felipe Jun Fuzita. -- São Paulo, 2014. Orientador: Profa. Dra. Adriana Rios Lopes Rocha. Tese (Doutorado) – Universidade de São Paulo. Instituto de Ciências Biomédicas. Programa de Pós-Graduação Interunidades em Biotecnologia USP/IPT/Instituto Butantan. Área de concentração: Biotecnologia. Linha de pesquisa: Bioquímica, biologia molecular, espectrometria de massa. Versão do título para o português: Fisiologia molecular da digestão em Arachnida: abordagens funcional e comparativo-evolutiva. 1. Digestão 2. Aranha 3. Escorpião 4. Enzimologia 5. Proteoma 6. Transcriptoma I. Rocha, Profa. Dra. Adriana Rios Lopes I. Universidade de São Paulo. Instituto de Ciências Biomédicas. Programa de Pós-Graduação Interunidades em Biotecnologia USP/IPT/Instituto Butantan III. -
A Process for Combined Biopolishing
(19) TZZ _¥_T (11) EP 2 164 943 B1 (12) EUROPEAN PATENT SPECIFICATION (45) Date of publication and mention (51) Int Cl.: of the grant of the patent: C11D 3/386 (2006.01) D06M 16/00 (2006.01) 12.03.2014 Bulletin 2014/11 C12N 9/08 (2006.01) C11D 3/00 (2006.01) C12N 9/42 (2006.01) (21) Application number: 08760676.0 (86) International application number: (22) Date of filing: 06.06.2008 PCT/EP2008/057106 (87) International publication number: WO 2008/151999 (18.12.2008 Gazette 2008/51) (54) A PROCESS FOR COMBINED BIOPOLISHING AND BLEACH CLEAN-UP VERFAHREN FÜR KOMBINIERTE BIOPOLIERUNG UND BLEICHREINIGUNG PROCEDE POUR BIOPOLISSAGE ET NETTOYAGE PAR UN AGENT DE BLANCHIMENT COMBINES (84) Designated Contracting States: (56) References cited: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR WO-A-00/71808 WO-A-99/32708 HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT WO-A-03/002810 WO-A1-02/38717 RO SE SI SK TR WO-A1-91/17243 WO-A1-96/29397 WO-A1-2004/059075 WO-A2-2006/101584 (30) Priority: 11.06.2007 EP 07109969 WO-A2-2007/019442 CN-A- 1 584 192 GB-A- 2 216 149 PT-A- 101 152 (43) Date of publication of application: US-A- 5 700 769 US-A- 6 140 109 24.03.2010 Bulletin 2010/12 • ROY S K, DEY S K, RAHA S K, CHAKRABARTY S (60) Divisional application: L: "Purification and properties of an extracellular 13196997.4 endoglucanase from Myceliophthora thermophila", JOURNAL OF GENERAL (73) Proprietor: Novozymes A/S MICROBIOLOGY, vol. -
Science Journals
SCIENCE ADVANCES | RESEARCH ARTICLE HEALTH AND MEDICINE Copyright © 2019 The Authors, some rights reserved; Porphyromonas gingivalis in Alzheimer’s disease brains: exclusive licensee American Association Evidence for disease causation and treatment with for the Advancement of Science. No claim to small-molecule inhibitors original U.S. Government Stephen S. Dominy1*†, Casey Lynch1*, Florian Ermini1, Malgorzata Benedyk2,3, Agata Marczyk2, Works. Distributed 1 1 1 1 1 under a Creative Andrei Konradi , Mai Nguyen , Ursula Haditsch , Debasish Raha , Christina Griffin , Commons Attribution 1 1 1 1 4 Leslie J. Holsinger , Shirin Arastu-Kapur , Samer Kaba , Alexander Lee , Mark I. Ryder , License 4.0 (CC BY). Barbara Potempa5, Piotr Mydel2,6, Annelie Hellvard3,6, Karina Adamowicz2, Hatice Hasturk7,8, Glenn D. Walker9, Eric C. Reynolds9, Richard L. M. Faull10, Maurice A. Curtis11,12, Mike Dragunow11,13, Jan Potempa2,5* Porphyromonas gingivalis, the keystone pathogen in chronic periodontitis, was identified in the brain of Alzheimer’s disease patients. Toxic proteases from the bacterium called gingipains were also identified in the brain of Alzheimer’s Downloaded from patients, and levels correlated with tau and ubiquitin pathology. Oral P. gingivalis infection in mice resulted in brain colonization and increased production of Ab1–42, a component of amyloid plaques. Further, gingipains were neurotoxic in vivo and in vitro, exerting detrimental effects on tau, a protein needed for normal neuronal func- tion. To block this neurotoxicity, we designed and synthesized small-molecule inhibitors targeting gingipains. Gingipain inhibition reduced the bacterial load of an established P. gingivalis brain infection, blocked Ab1–42 pro- duction, reduced neuroinflammation, and rescued neurons in the hippocampus.