Mold & Mycotoxins: Effects on the Neurological and Immune Systems
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
New Markers in the Mycotox Profile
New Markers in the MycoTOX Profile We are happy to announce the addition of four new mycotoxin markers to our MycoTOX Profile. The test now includes 11 mycotoxins from 40 species of mold, making it by far the most comprehensive and competitively priced mycotoxin test available. It also still more sensitive and accurate than other tests available, because we use LC/MS/MS technology. Here is an overview of the four new mycotoxin markers: Gliotoxin Gliotoxin (GTX) is produced by the mold genus Aspergillus. Aspergillus spreads in the environment by releasing conidia which are capable of infiltrating the small alveolar airways of individuals. In order to evade the body’s defenses Aspergillus releases Gliotoxin to inhibit the immune system. One of the targets of Gliotoxin is PtdIns (3,4,5) P3. This results in the downregulation of phagocytic immune defense, which can lead to the exacerbation of polymicrobial infections. Gliotoxin impairs the activation of T-cells and induces apoptosis in monocytes and in monocyte-derived dendritic cells. These impairments can lead to multiple neurological syndromes. Mycophenolic Acid Mycophenolic Acid (MPA) produced by the Penicillium fungus. MPA is an immunosuppressant which inhibits the proliferation of B and T lymphocytes. MPA exposure can increase the risk of opportunistic infections such as Clostridia and Candida. MPA is associated with miscarriage and congenital malformations when the woman is exposed in pregnancy. Dihydrocitrinone Dihydrocitrinone is a metabolite of Citrinin (CTN), which is a mycotoxin that is produced by the mold species Aspergillus, Penicillium, and Monascus. CTN exposure can lead to nephropathy, because of its ability to increase permeability of mitochondrial membranes in the kidneys. -
Fungal Keratitis: Immune Recognition, Neutrophil-Hyphae Interactions, And
FUNGAL KERATITIS: IMMUNE RECOGNITION, NEUTROPHIL-HYPHAE INTERACTIONS, AND FUNGAL ANTI-OXIDATIVE DEFENSES by SIXTO MANUEL LEAL JR. Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy Thesis Advisor: Eric Pearlman, Ph.D. Department of Pathology CASE WESTERN RESERVE UNIVERSITY August, 2012 CASE WESTERN RESERVE UNIVERSITY SCHOOL OF GRADUATE STUDIES We hereby approve the dissertation of ______________________________________________________ candidate for the Ph.D. degree *. (signed)_______________________________________________ (chair of the committee) ________________________________________________ ________________________________________________ ________________________________________________ ________________________________________________ ________________________________________________ (date) _______________________ *We also certify that written approval has been obtained for any proprietary material contained therein. Dedication I dedicate this cumulative work to the invisible hand that has blessed my personal and academic life with incredible people, guidance, talent, courage, perseverance, and productivity. 3 Table of Contents List of Figures 7 List of Tables 9 Acknowledgements 10 List of Abbreviations 12 Abstract 14 Chapter 1. Introduction Fungi in their natural environment 16 Fungi and human disease 18 Fungi that cause human corneal infection 21 Fungal keratitis- Clinical characteristics and outcome 22 Anti-microbial Defenses at the Ocular Surface 23 Immune Recognition of Fungi 27 β2 integrins -
PESTICIDE EVALUATION REPORT and SAFER USE ACTION PLAN(PERSUAP)
PESTICIDE EVALUATION REPORT and SAFER USE ACTION PLAN(PERSUAP) By the USAID Kenya Agricultural Value Chain Enterprises (USAID-KAVES) Project Revised March 2014 This publication was produced for review by the United States Agency for International Development. It was prepared by Fintrac Inc. under contract reference AID-623-C-13-00002 Fintrac Inc. www.fintrac.com [email protected] US Virgin Islands 3077 Kronprindsens Gade 72 St. Thomas, USVI 00802 Tel: (340) 776-7600 Fax: (340) 776-7601 Washington, D.C. 1400 16th Street NW, Suite 400 Washington, D.C. 20036 USA Tel: (202) 462-3304 Fax: (202) 462-8478 USAID-KAVES Karen Office Park 3rd Floor Baobab, Suite H Langata Road, Karen, Nairobi Prepared by Fintrac Inc. USAID-KAVES PERSUAP 3 KENYA AGRICULTURAL VALUE CHAIN ENTERPRISES PROJECT (KAVES) PESTICIDE EVALUATION REPORT and SAFER USE ACTION PLAN (PERSUAP) Revised March 20134 The author’s views expressed in this publication do not necessarily reflect the views of the United States Agency for International Development or the United States government. Photos by Fintrac Inc. and Real IPM. Prepared by Fintrac Inc. INITIAL ENVIRONMENTAL EXAMINATION, AMENDMENTPESTICIDE EVALUATION REPORT AND SAFER USE ACTION PLAN (PERSUAP) FOR USAID/KENYA’S KENYA AGRICULTURAL VALUE CHAIN ENTERPRISES (KAVES) PROJECT CONTRACT NO. AID-623-C-13-00002 PROJECT NAME: Kenya Agricultural Value Chain Enterprises (KAVES) Project REGION/COUNTRY: East Africa/Kenya PROGRAM AREA: 4.5 Agriculture, Feed the Future ORIGINATING OFFICE Agriculture Business and Environment Office CURRENT DATE (as of revisions): March 2014 IEE AMENDMENT: Yes PREPARED BY: Fintrac Inc. IMPLEMENTATION START: January 16, 2013 LOP AMOUNT: $39,810,558 IMPLEMENTATION END: January 15th 2018 Filename & date of original IEE: Kenya_FY09_EconGrowth_IEE_01xx09.doc The purpose of this IEE amendment is to approve the 2013 Pesticide Evaluation Report (PER) and Safer Use Action Plan (SUAP) developed under the KAVES project and which will be used during project implementation. -
Mould and Yeast Identification in Archival Settings
International Biodeterioration & Biodegradation 65 (2011) 619e627 Contents lists available at ScienceDirect International Biodeterioration & Biodegradation journal homepage: www.elsevier.com/locate/ibiod Mould and yeast identification in archival settings: Preliminary results on the use of traditional methods and molecular biology options in Portuguese archives A.C. Pinheiro a,*, M.F. Macedo b, V. Jurado c, C. Saiz-Jimenez c, C. Viegas d, J. Brandão e, L. Rosado e a Departamento de Conservação e Restauro da Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Portugal b Vicarte, Departamento de Conservação e Restauro da Faculdade Ciências e Tecnologia da Universidade Nova de Lisboa, Portugal c Instituto de Recursos Naturales y Agrobiologia, CSIC, Sevilla, Spain d Escola Superior de Tecnologias de Saúde de Lisboa, Instituto Politécnico de Lisboa, Portugal e Unidade de Referência de Doenças Sistémicas e Zoonoses do Departamento de Doenças Infecciosas do Instituto Nacional de Saúde Doutor Ricardo Jorge, IP, Lisboa, Portugal article info abstract Article history: This project was developed to fully assess the indoor air quality in archives and libraries from a fungal flora Received 14 September 2010 point of view. It uses classical methodologies such as traditional culture media e for the viable fungi e and Received in revised form modern molecular biology protocols, especially relevant to assess the non-viable fraction of the biological 4 February 2011 contaminants. Denaturing high-performance liquid chromatography (DHPLC) has emerged as an alter- Accepted 4 February 2011 native to denaturing gradient gel electrophoresis (DGGE) and has already been applied to the study of Available online 12 April 2011 a few bacterial communities. -
Nomination Background: Stachybotrys Chartarum Strain 2 Mold (Atranone Chemotype) (CASRN: STACHYSTRN2)
Stachybotrys chartarum (or S. atra or S. alternans) [CAS No. 67892-26-6] Review of Toxicological Literature June 2004 Stachybotrys chartarum (or S. atra or S. alternans) [CAS No. 67892-26-6] Review of Toxicological Literature Prepared for National Toxicology Program (NTP) National Institute of Environmental Health Sciences (NIEHS) National Institutes of Health U.S Department of Health and Human Services Contract No. N01-ES-35515 Project Officer: Scott A. Masten, Ph.D. NTP/NIEHS Research Triangle Park, North Carolina Prepared by Integrated Laboratory Systems, Inc. Research Triangle Park, North Carolina June 2004 Abstract Stachybotrys chartarum is a greenish-black mold in the fungal division Deuteromycota, a catch-all group for fungi for which a sexually reproducing stage is unknown. It produces asexual spores (conidia). The morphology and color of conidia and other structures examined microscopically help distinguish the species from other molds found in indoor air that may contaminate materials in buildings that have suffered water intrusion. S. chartarum may ultimately overgrow other molds that have also produced colonies on wet cellulosic materials such as drywall (gypsum board, wallboard, sheet rock, etc.). Because of the likelihood that it may produce toxic macrocyclic trichothecenes and hemolytic stachylysin (exposure to which may be associated with idiopathic pulmonary hemorrhage [IPH] in infants), S. chartarum exposure is of concern to the members of the general public whose homes and workplaces have been contaminated after water intrusion, to agricultural and textile workers who handle contaminated plant material, and to workers involved in remediation of mold-damaged structures. Dry conidia, hyphae, and other fragments can be mechanically aerosolized as inhalable particulates. -
Ergot Alkaloid Biosynthesis in Aspergillus Fumigatus : Association with Sporulation and Clustered Genes Common Among Ergot Fungi
Graduate Theses, Dissertations, and Problem Reports 2009 Ergot alkaloid biosynthesis in Aspergillus fumigatus : Association with sporulation and clustered genes common among ergot fungi Christine M. Coyle West Virginia University Follow this and additional works at: https://researchrepository.wvu.edu/etd Recommended Citation Coyle, Christine M., "Ergot alkaloid biosynthesis in Aspergillus fumigatus : Association with sporulation and clustered genes common among ergot fungi" (2009). Graduate Theses, Dissertations, and Problem Reports. 4453. https://researchrepository.wvu.edu/etd/4453 This Dissertation is protected by copyright and/or related rights. It has been brought to you by the The Research Repository @ WVU with permission from the rights-holder(s). You are free to use this Dissertation in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you must obtain permission from the rights-holder(s) directly, unless additional rights are indicated by a Creative Commons license in the record and/ or on the work itself. This Dissertation has been accepted for inclusion in WVU Graduate Theses, Dissertations, and Problem Reports collection by an authorized administrator of The Research Repository @ WVU. For more information, please contact [email protected]. Ergot alkaloid biosynthesis in Aspergillus fumigatus: Association with sporulation and clustered genes common among ergot fungi Christine M. Coyle Dissertation submitted to the Davis College of Agriculture, Forestry, and Consumer Sciences at West Virginia University in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Genetics and Developmental Biology Daniel G. Panaccione, Ph.D., Chair Kenneth P. Blemings, Ph.D. Joseph B. -
Evasion of Adaptive Immune Defenses by the Lethal
EVASION OF ADAPTIVE IMMUNE DEFENSES BY THE LETHAL CHYTRID FUNGUS BATRACHOCHYTRIUM DENDROBATIDIS By Jeffrey Scott Fites Jr. Dissertation Submitted to the Faculty of the Graduate School of Vanderbilt University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY in Biological Sciences May, 2014 Nashville, TN Approved: Katherine Friedman, Ph. D., chair Clint Carter, Ph. D. Julián Hillyer, Ph. D. D. Borden Lacy, Ph. D. Louise Rollins-Smith, Ph. D., thesis advisor DEDICATION To my family, My loving wife Meg, My newborn son Peter, My parents Jeff and Robin, And my sister Kateri. ii ACKNOWLEGMENTS I have many people to acknowledge for the achievements I have made in graduate school both personal and academic. I could not have accomplished a paper in Science or completed my Ph. D. thesis work without their assistance and support. I practiced karate for eight years from elementary school through high school. At every promotion to a higher rank, my karate instructor would remind all the students that they did not make achievements alone and that they must “put all their ducks in a row” to thank all the people responsible helping us along our way. He would say that we should start by thanking the oldest living members of our families, our parents, grandparents, and great-grandparents because, “if it wasn’t for our great-grandparents, our grandparents wouldn’t be here; and if it wasn’t for our grandparents, our parents wouldn’t be here; and if it wasn’t for our parents, we wouldn’t be here.” In such fashion, I will begin by thanking my oldest living relatives, my grandparents, Jack and Pauline Fites. -
Occurrence and Significance of Mycotoxins in Forage Crops And
J Sci Food Agric 1998, 77,1È17 Occurrence and Signiücance of Mycotoxins in Forage Crops and Silage: a Review Keith A Scudamore1* and Christopher T Livesey2 1 Central Science Laboratory, London Road, Slough, Berks, SL3 7HJ, UK 2 Veterinary Laboratories Agency, New Haw, Woodham Lane, Addlestone, Surrey, KT15 3NB, UK (Received 5 December 1996; revised version received 29 May 1997; accepted 4 September 1997) Abstract: Study of mycotoxins in animal feeding stu†s has concentrated on the occurrence of aÑatoxins and, to a lesser extent, other mycotoxins in cereals, raw materials and concentrate feeds. However, ruminant diets contain a high propor- tion of forage crops such as grass or maize silage, hay and straw. Under adverse growing, production or storage conditions, fungal spoilage is likely to occur with some degree of mycotoxin contamination. The mould Ñora of forage crops is likely to di†er signiÐcantly from that of cereals and mycotoxin contamination, should it occur, could di†er qualitatively and quantitatively. Information relating to forage crops as a potential source of mycotoxins is reviewed. Some Ðeld inci- dents and animal disease which may be mycotoxin related are discussed and analytical methods are reviewed. Information on dose and e†ect of candidate mycotoxins is given where available. The review suggests areas which the authors consider merit further study. Crown Copyright 1998. J Sci Food Agric 77,1È17 (1998) Key words: mycotoxins; fungi; moulds; silage; forage crops; hay; straw; occurrence; analysis; risk assessment; animal disease INTRODUCTION access, silage will be at risk from storage moulds such as Penicillium and Aspergillus. However, moulds may be During growth, forage crops are at risk in the Ðeld from aerobic or anaerobic and this means that, even if infection by a number of di†erent fungi, some of which oxygen is excluded, some moulds may be able to may produce mycotoxins. -
Recurrence of Stachybotrys Chartarum During Mycological And
Recurrence of Stachybotrys chartarum during mycological and toxicological study of bioaerosols collected in a dairy cattle shed Caroline Lanier, Veronique Andre, Virginie Seguin, Natacha Heutte, Anne El Kaddoumi, Valérie Bouchart, Rachel Picquet, David Garon To cite this version: Caroline Lanier, Veronique Andre, Virginie Seguin, Natacha Heutte, Anne El Kaddoumi, et al.. Recur- rence of Stachybotrys chartarum during mycological and toxicological study of bioaerosols collected in a dairy cattle shed. Annals of Agricultural and Environmental Medicine (AAEM), Institute of Agricultural Medicine in Lublin, 2012, 19 (1), pp.61-67. hal-02186772 HAL Id: hal-02186772 https://hal-normandie-univ.archives-ouvertes.fr/hal-02186772 Submitted on 13 Nov 2019 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Distributed under a Creative Commons Attribution - NonCommercial| 4.0 International License Annals of Agricultural and Environmental Medicine 2012, Vol 19, No 1, 61-67 ORIGINAL ARTICLE www.aaem.pl Recurrence of Stachybotrys chartarum during mycological and toxicological study of bioaerosols collected in a dairy cattle shed Caroline Lanier1, Véronique André1, Virginie Séguin1, Natacha Heutte1, Anne El Kaddoumi1, Valérie Bouchart2, Rachel Picquet2, David Garon1 1 Université de Caen Basse Normandie, Caen, France 2 Laboratoire Départemental Frank Duncombe, Conseil Général du Calvados, Saint Contest, France Lanier C, André V, Séguin V, Heutte N, Kaddoumi A, Bouchart V, Picquet R, Garon D. -
How Fungi Defend Themselves Against Microbial Competitors and Animal Predators
Research Collection Review Article How fungi defend themselves against microbial competitors and animal predators Author(s): Künzler, Markus Publication Date: 2018-09 Permanent Link: https://doi.org/10.3929/ethz-b-000302429 Originally published in: PLoS pathogens 14(9), http://doi.org/10.1371/journal.ppat.1007184 Rights / License: Creative Commons Attribution 4.0 International This page was generated automatically upon download from the ETH Zurich Research Collection. For more information please consult the Terms of use. ETH Library PEARLS How fungi defend themselves against microbial competitors and animal predators Markus KuÈ nzler* EidgenoÈssische Technische Hochschule ZuÈrich, Department of Biology, Institute of Microbiology, ZuÈrich, Switzerland * [email protected] Lifestyle exposes filamentous fungi to antagonists Filamentous fungi arrange their cells in linear, coenocytic arrays, referred to as hyphae, that extend at their tips and are able to branch and fuse, leading to a loose, three-dimensional net- work referred to as mycelium [1]. This architecture represents an optimal adaptation to the osmotrophic lifestyle of fungi in that it maximizes the surface for nutrient absorption and a1111111111 enables the fungus to efficiently reach and colonize its substrates. Some hyphae of the long- a1111111111 lived and constantly renewed vegetative mycelium may differentiate in other, more compact a1111111111 tissues, e.g., the (usually) short-lived and spore-producing fruiting bodies formed by dikaryotic a1111111111 fungi during their sexual reproduction. The different fungal tissues are exposed to different a1111111111 types of antagonists dependent on the ecological niche of the fungus. The vegetative mycelium of a saprophytic fungus, e.g., is exposed to other microorganisms that compete for the same nutrients and may feed on the degradation products released by the action of the hydrolytic enzymes secreted by the fungus. -
New from Realtime Laboratories (RTL)... an Exciting Addition to RTL’S Mycotoxin Test Panel
October 2015 New From RealTime Laboratories (RTL)... An exciting addition to RTL’s Mycotoxin Test Panel Introducing our new GLIOTOXIN CLINICAL TEST RealTime Labs Receives The Gliotoxin Test is a fast, accurate and sensitive method for the detection of a metabolic Accreditation from derivative of Gliotoxin in a clinical sample. The presence of this metabolic derivative of College of Gliotoxin in urine samples is indicative of an infection or exposure to Asperigillus fumigatus, American Pathologists Trichoderma, or Penicillium spp. This is of particular importance in immunocompromised The Accreditation Committee hosts (e.g. transplant, HIV and cancer patients), since Aspergillus fumigatus is a major of the College of American cause of Invasive Aspergillosis (IA), which has a high mortality rate, estimated to be 30%- Pathologists (CAP) has again 80%. It has also been shown that Gliotoxin suppresses the human immune response via awarded accreditation to apoptosis of monocytes(1). RealTime Laboratories, Inc., Carrollton, Texas, based on Ordering Information: This adds to RTL’s comprehensive results of a recent on-site E8510 Gliotoxin Test: $250.00 Mycotoxin Test Panel which includes inspection as part of the CAP’s Accreditation Programs. RTL tests for the following 14 Mycotoxins: E8510 Gliotoxin Test as an add on to the has been accredited by CAP E8500 Total Mycotoxin Panel: $99.00 A. Ochratoxin A since August 2011. It also (Total Panel $798.00) holds licenses, certifications, B. Aflatoxin Group (B1, B2, G1, G2) E8510F Gliotoxin Test as a standalone and accreditation from CLIA. Follow-Up: $99.00 C. Tricothecene Group (Satratoxin RealTime Laboratories, Inc., (RTL) is the only laboratory E8510 Gliotoxin Test as an add on to G, Satratoxin H, Isosatratoxin F, in the U.S. -
BIOL 4849 Mycotoxicosis
Mycotoxins BIOL 4849 - Summer 2010 Introduction Mycotoxicosis • Mycotoxin – chemically diverse group of compounds – Produced primarily by molds • Some mushrooms • 300-400 different compounds by molds – Location • Hyphae • Conidia BIOL 4849 (Summer 2010) Copyright © 2010 Chester R. Cooper, Jr. • Extracellular Disclaimer: This lecture slide presentation is intended solely for educational purposes. Many of the images contained herein are the property of the original owner, as indicated within the figure itself or within the figure legend. These images are used only for illustrative purposes within the context of this lecture material. Use of these images outside the purpose of this presentation may violate the rights of the original owner. Dr. Cooper and Youngstown State University assume no responsibility for the unauthorized use of the material BIOL 4849 (Summer 2010) Copyright © 2010 Chester R. Cooper, Jr. contained herein. Introduction (cont.) Introduction (cont.) • Mycotoxins are thought to be part of an • Exposure routes environmental survival armament – Eating contaminated foodstuffs: very significant in • Various affects on protein, RNA, or DNA countries that rely on single grain food sources synthesis or membrane disruption • Growth on foodstuffs pre-harvest • Causes impaired cellular function or death • Post-harvest growth • Contamination of surfaces – Absorption through skin/contact: may induce necrosis as well as systemic effects • Possible bioweapons • Possible source of indoor health problems BIOL 4849 (Summer 2010) Copyright