Xenopus Laevis
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Disease and Clinical Signs Poster
African Clawed Frog Xenopus laevis Diseases and Clinical Signs in Photographs Therese Jones-Green University Biomedical Services Abstract Reported clinical signs associated with ill health and Clinical signs found between 2016 to 2018 Many diseases of Xenopus laevis frogs have been described in the • Opened in 2005, the biofacility can hold up to 900 female and 240 disease Clinical signs found between 2016 to 2018 male frogs in a Marine Biotech (now serviced by MBK Installations Ltd.) • 80 recirculating aquatic system. • Buoyancy problems 70 bridge this gap using photographs taken of frogs with clinical signs. The system monitors parameters such as: temperature, pH, • • Changes in activity e.g. lethargy or easily startled. My aims are: conductivity, and Total Gas Pressure. 60 • Unusual amount of skin shedding. 2018 • To share my experiences, via images, to help improve the welfare and • Frogs are maintained on mains fed water with a 20% water exchange. 50 ases • Weight loss, or failure to feed correctly. c husbandry of this species. • 2017 • Coelomic (body cavity) distention. 40 • To stimulate a dialogue which results in further sharing of ideas and 2016 Whole body bloat. 30 information. • Frogs are held under a 12 hour light/dark cycle. • Number of • Each tank has a PVC enrichment tube (30cm x 10cm), with smoothed • Fungal strands/tufts. 20 Introduction cut edges. • Sores or tremors at extremities (forearms and toes). 10 Between January 2016 and October 2018, cases of ill health and disease • Frogs are fed three times a week with a commercial trout pellet. • Redness or red spots. 0 Oedema Red leg Red leg (bad Red leg Gas bubble Sores on forearm Opaque cornea Skeletal Growth (cartilage Scar Cabletie Missing claws Eggbound in a colony of Xenopus laevis frogs housed by the University Biological hormone) (nematodes) disease deformity under skin) • The focus of the research undertaken in the biofacility is embryonic and • Excessive slime/mucous production or not enough (dry dull skin). -
Table S1. Nakharuthai and Srisapoome (2020)
Primer name Nucleotide sequence (5’→3’) Purpose CXC-1F New TGAACCCTGAGCTGAAGGCCGTGA Real-time PCR CXC-1R New TGAAGGTCTGATGAGTTTGTCGTC Real-time PCR CXC-1R CCTTCAGCTCAGGGTTCAAGC Genomic PCR CXC-2F New GCTTGAACCCCGAGCTGAAAAACG Real-time PCR CXC-2R New GTTCAGAGGTCGTATGAGGTGCTT Real-time PCR CXC-2F CAAGCAGGACAACAGTGTCTGTGT 3’RACE CXC-2AR GTTGCATGATTTGGATGCTGGGTAG 5’RACE CXC-1FSB AACATATGTCTCCCAGGCCCAACTCAAAC Southern blot CXC-1RSB CTCGAGTTATTTTGCACTGATGTGCAA Southern blot CXC1Exon1F CAAAGTGTTTCTGCTCCTGG Genomic PCR On-CXC1FOverEx CATATGCAACTCAAACAAGCAGGACAACAGT Overexpression On-CXC1ROverEx CTCGAGTTTTGCACTGATGTGCAATTTCAA Overexpression On-CXC2FOverEx CATATGCAACTCAAACAAGCAGGACAACAGT Overexpression On-CXC2ROverEx CTCGAGCATGGCAGCTGTGGAGGGTTCCAC Overexpression β-actinrealtimeF ACAGGATGCAGAAGGAGATCACAG Real-time PCR β-actinrealtimeR GTACTCCTGCTTGCTGATCCACAT Real-time PCR M13F AAAACGACGGCCAG Nucleotide sequencing M13R AACAGCTATGACCATG Nucleotide sequencing UPM-long (0.4 µM) CTAATACGACTCACTATAGGGCAAGCAGTGGTATCAACGCAGAGT RACE PCR UPM-short (2 µM) CTAATAC GACTCACTATA GGGC RACE PCR Table S1. Nakharuthai and Srisapoome (2020) On-CXC1 Nucleotide (%) Amino acid (%) On-CXC2 Nucleotide (%) Amino acid (%) Versus identity identity similarity Versus identity identity Similarity Teleost fish 1. Rock bream, Oplegnathus fasciatus (AB703273) 64.5 49.1 68.1 O. fasciatus 70.7 57.7 75.4 2. Mandarin fish, Siniperca chuatsi (AAY79282) 63.2 48.1 68.9 S. chuatsi 70.5 54.0 78.8 3. Atlantic halibut, Hippoglossus hippoglossus (ACY54778) 52.0 39.3 51.1 H. hippoglossus 64.5 46.3 63.9 4. Common carp IL-8, Cyprinus carpio (ABE47600) 44.9 19.1 34.1 C. carpio 49.4 21.9 42.6 5. Rainbow trout IL-8, Oncorhynchus mykiss (CAC33585) 44.0 21.3 36.3 O. mykiss 47.3 23.7 44.4 6. Japanese flounder IL-8, Paralichthys olivaceus (AAL05442) 48.4 25.4 45.9 P. -
Xenopus for Dummies.Docx
Xenopus for DUMMIES 1 Xenopus for DUMMIES OUTLINE Introduction ........................................................................................................................... 2 1. Why is Xenopus interesting for iGEM? ........................................................................... 4 2. Requirements before planning to work on Xenopus......................................................... 5 3. Guidelines to define an iGEM project with Xenopus ........................................................ 5 4. The micro-injection procedure ........................................................................................ 7 a. Step 1: Fertilized eggs ........................................................................................ 7 b. Step 2: DNA injection .......................................................................................... 7 c. Place the injected embryos in incubator 21°C ..................................................... 8 d. The following days .............................................................................................. 8 e. Embryos injection: efficiency ............................................................................... 8 5. The biobrick plasmids for Xenopus ................................................................................. 9 6. Xenopus debugging tool ............................................................................................... 10 a. How? ................................................................................................................ -
Association of DNA with Nuclear Matrix in in Vitro Assembled Nuclei
Cell Research (1997), 7, 107-117 Association of DNA with nuclear matrix in in vitro as- sembled nuclei induced by rDNA from Tetrahymena shang- haiensis in Xenopus egg extracts CHEN YING, BO ZHANG, XIU FEN LI, ZHONG HE ZHAI Department of Cell Biology and Genetics, College of Life Sciences, Peking University, Beijing 100871 ABSTRACT The nuclei assembled from exogenous DNA or chro- matin in egg extracts resemble their in vivo counterparts in many aspects. However, the distribution pattern of DNA in these nuclei remains unknown. We introduced rDNA from the macronuclei of Tetrahymena into Xenopus cell- free extracts to examine the association of specific DNA sequences with nuclear matrix (NM) in the nuclei assem- bled in vitro. Our previous works showed the 5'NTS (non- transcription sequences) of the rDNA specifically bind to the NM system in the macronuclei. We show now the rDNA could induce chromatin assembly and nuclear for- mation in Xenopus cell-free system. When we extracted the NM system and compared the binding affinity of differ- ent regions of rDNA with the NM system, we found that the 5'NTS still hold their binding affinity with insoluble structure of the assembled nuclei in the extracts of Xeno- pus eggs. Key words: Nuclear assembly, nuclear matrix, Xeno- pus egg extracts, Tetrahymena rDNA. On the occasion of Professor Lu Ji SHI's (L. C. Sze), eightieth birthday, we present this paper and extend our sincere greetings to Professor SHI. As we mentioned in our paper, in early 1950's, it is Professor SHI who first studied the behavior of exogenous homologous desoxyribose nucleoprotein (chromatin) in amphibian eggs. -
Enhanced XAO: the Ontology of Xenopus Anatomy And
Segerdell et al. Journal of Biomedical Semantics 2013, 4:31 http://www.jbiomedsem.com/content/4/1/31 JOURNAL OF BIOMEDICAL SEMANTICS RESEARCH Open Access Enhanced XAO: the ontology of Xenopus anatomy and development underpins more accurate annotation of gene expression and queries on Xenbase Erik Segerdell1*, Virgilio G Ponferrada2, Christina James-Zorn2, Kevin A Burns2, Joshua D Fortriede2, Wasila M Dahdul3,4, Peter D Vize5 and Aaron M Zorn2 Abstract Background: The African clawed frogs Xenopus laevis and Xenopus tropicalis are prominent animal model organisms. Xenopus research contributes to the understanding of genetic, developmental and molecular mechanisms underlying human disease. The Xenopus Anatomy Ontology (XAO) reflects the anatomy and embryological development of Xenopus. The XAO provides consistent terminology that can be applied to anatomical feature descriptions along with a set of relationships that indicate how each anatomical entity is related to others in the embryo, tadpole, or adult frog. The XAO is integral to the functionality of Xenbase (http://www. xenbase.org), the Xenopus model organism database. Results: We significantly expanded the XAO in the last five years by adding 612 anatomical terms, 2934 relationships between them, 640 synonyms, and 547 ontology cross-references. Each term now has a definition, so database users and curators can be certain they are selecting the correct term when specifying an anatomical entity. With developmental timing information now asserted for every anatomical term, the ontology provides internal checks that ensure high-quality gene expression and phenotype data annotation. The XAO, now with 1313 defined anatomical and developmental stage terms, has been integrated with Xenbase expression and anatomy term searches and it enables links between various data types including images, clones, and publications. -
(CCAC) Guide to the Care and Use of Experimental Animals Volume
Canadian Council on Animal Care Conseil canadien de protection des animaux Guide to the Care and Use of Experimental Animals Volume 1, 2nd Edition Sections of this document that have been revised are replaced by links to the relevant documents. The remaining sections are undergoing revision; however, they will continue to be used for CCAC assessments until revised guidelines are published. Editors Dr E.D. Olfert Dr B.M. Cross Mrs A.A. McWilliam Director Asssistant Director Information Officer Animal Resources Centre Animal Resources Centre Canadian Council on Animal Care University of Saskatchewan University of Saskatchewan 1000-151 Slater Street Saskatoon, Saskatchewan Saskatoon, Saskatchewan Ottawa, Ontario K1P 5H3 S7N 0W0 S7N 0W0 In keeping with the CCAC policy of revising statements and guidelines as needed, users of this Guide are encouraged to forward any comments to the Secretariat. Citing certain devices or manufacturers is not to be perceived as the endorsement of the Canadian Council on Animal Care (CCAC) of one particular product over another. Publication Date: 1993 Revision Date: April 2020 © Canadian Council on Animal Care, 1993 ISBN: 0-919087-18-3 Canadian Council on Animal Care 190 O’Connor St., Suite 800 Ottawa, Ontario, K2P 2R3 http://www.ccac.ca Table of Contents TABLE OF CONTENTS DEDICATION ...................................................................................................................1 PREFACE.........................................................................................................................2 -
This Article Appeared in a Journal Published by Elsevier. the Attached
(This is a sample cover image for this issue. The actual cover is not yet available at this time.) This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues. Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier’s archiving and manuscript policies are encouraged to visit: http://www.elsevier.com/copyright Author's personal copy Toxicon 60 (2012) 967–981 Contents lists available at SciVerse ScienceDirect Toxicon journal homepage: www.elsevier.com/locate/toxicon Antimicrobial peptides and alytesin are co-secreted from the venom of the Midwife toad, Alytes maurus (Alytidae, Anura): Implications for the evolution of frog skin defensive secretions Enrico König a,*, Mei Zhou b, Lei Wang b, Tianbao Chen b, Olaf R.P. Bininda-Emonds a, Chris Shaw b a AG Systematik und Evolutionsbiologie, IBU – Fakultät V, Carl von Ossietzky Universität Oldenburg, Carl von Ossietzky Strasse 9-11, 26129 Oldenburg, Germany b Natural Drug Discovery Group, School of Pharmacy, Medical Biology Center, Queen’s University, 97 Lisburn Road, Belfast BT9 7BL, Northern Ireland, UK article info abstract Article history: The skin secretions of frogs and toads (Anura) have long been a known source of a vast Received 23 March 2012 abundance of bioactive substances. -
Stages of Embryonic Development of the Zebrafish
DEVELOPMENTAL DYNAMICS 2032553’10 (1995) Stages of Embryonic Development of the Zebrafish CHARLES B. KIMMEL, WILLIAM W. BALLARD, SETH R. KIMMEL, BONNIE ULLMANN, AND THOMAS F. SCHILLING Institute of Neuroscience, University of Oregon, Eugene, Oregon 97403-1254 (C.B.K., S.R.K., B.U., T.F.S.); Department of Biology, Dartmouth College, Hanover, NH 03755 (W.W.B.) ABSTRACT We describe a series of stages for Segmentation Period (10-24 h) 274 development of the embryo of the zebrafish, Danio (Brachydanio) rerio. We define seven broad peri- Pharyngula Period (24-48 h) 285 ods of embryogenesis-the zygote, cleavage, blas- Hatching Period (48-72 h) 298 tula, gastrula, segmentation, pharyngula, and hatching periods. These divisions highlight the Early Larval Period 303 changing spectrum of major developmental pro- Acknowledgments 303 cesses that occur during the first 3 days after fer- tilization, and we review some of what is known Glossary 303 about morphogenesis and other significant events that occur during each of the periods. Stages sub- References 309 divide the periods. Stages are named, not num- INTRODUCTION bered as in most other series, providing for flexi- A staging series is a tool that provides accuracy in bility and continued evolution of the staging series developmental studies. This is because different em- as we learn more about development in this spe- bryos, even together within a single clutch, develop at cies. The stages, and their names, are based on slightly different rates. We have seen asynchrony ap- morphological features, generally readily identi- pearing in the development of zebrafish, Danio fied by examination of the live embryo with the (Brachydanio) rerio, embryos fertilized simultaneously dissecting stereomicroscope. -
Helical Insertion of Peptidoglycan Produces Chiral Ordering of the Bacterial Cell Wall
Helical insertion of peptidoglycan produces PNAS PLUS chiral ordering of the bacterial cell wall Siyuan Wanga,b, Leon Furchtgottc,d, Kerwyn Casey Huangd,1, and Joshua W. Shaevitza,e,1 aLewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544; bDepartment of Molecular Biology, Princeton University, Princeton, NJ 08544; cBiophysics Program, Harvard University, Cambridge, MA 02138; dDepartment of Bioengineering, Stanford University, Stanford, CA 94305; and eDepartment of Physics, Princeton University, Princeton, NJ 08854 AUTHOR SUMMARY Cells from all kingdoms of wall growth to demonstrate life face the task of that patterning of cell-wall constructing a specific, synthesis by left-handed mechanically robust three- MreB polymers leads to a dimensional (3D) cell shape right-handed chiral from molecular-scale organization of the glycan components. For many strands. This organization bacteria, maintaining a rigid, produces a left-handed rod-like shape facilitates a twisting of the cell body diverse range of behaviors during elongational growth. including swimming motility, We then confirm the detection of chemical existence of right-handed gradients, and nutrient access Fig. P1. Helical insertion of material into the bacterial cell wall (green) glycan organization in E. coli during elongational growth, guided by the protein MreB (yellow), leads and waste evacuation in by osmotically shocking biofilms. The static shape of to an emergent chiral order in the cell-wall network and twisting of the cell that can be visualized using surface-bound beads (red). surface-labeled cells and a bacterial cell is usually directly measuring the defined by the cell wall, a difference in stiffness macromolecular polymer network composed of glycan strands between the longitudinal and transverse directions. -
High Abundance of Invasive African Clawed Frog Xenopus Laevis in Chile: Challenges for Their Control and Updated Invasive Distribution
Management of Biological Invasions (2019) Volume 10, Issue 2: 377–388 CORRECTED PROOF Research Article High abundance of invasive African clawed frog Xenopus laevis in Chile: challenges for their control and updated invasive distribution Marta Mora1, Daniel J. Pons2,3, Alexandra Peñafiel-Ricaurte2, Mario Alvarado-Rybak2, Saulo Lebuy2 and Claudio Soto-Azat2,* 1Vida Nativa NGO, Santiago, Chile 2Centro de Investigación para la Sustentabilidad & Programa de Doctorado en Medicina de la Conservación, Facultad de Ciencias de la Vida, Universidad Andres Bello, Republica 440, Santiago, Chile 3Facultad de Ciencias Exactas, Departamento de Matemáticas, Universidad Andres Bello, Santiago, Republica 470, Santiago, Chile Author e-mails: [email protected] (CSA), [email protected] (MM), [email protected] (DJP), [email protected] (APR), [email protected] (MAR), [email protected] (SL) *Corresponding author Citation: Mora M, Pons DJ, Peñafiel- Ricaurte A, Alvarado-Rybak M, Lebuy S, Abstract Soto-Azat C (2019) High abundance of invasive African clawed frog Xenopus Invasive African clawed frog Xenopus laevis (Daudin, 1802) are considered a major laevis in Chile: challenges for their control threat to aquatic environments. Beginning in the early 1970s, invasive populations and updated invasive distribution. have now been established throughout much of central Chile. Between September Management of Biological Invasions 10(2): and December 2015, we studied a population of X. laevis from a small pond in 377–388, https://doi.org/10.3391/mbi.2019. 10.2.11 Viña del Mar, where we estimated the population size and evaluated the use of hand nets as a method of control. First, by means of a non-linear extrapolation Received: 26 October 2018 model using the data from a single capture session of 200 min, a population size of Accepted: 7 March 2019 1,182 post-metamorphic frogs (range: 1,168–1,195 [quadratic error]) and a density Published: 16 May 2019 of 13.7 frogs/m2 (range: 13.6–13.9) of surface water were estimated. -
Pre-Incursion Plan PIP003 Toads and Frogs
Pre-incursion Plan PIP003 Toads and Frogs Scope This plan is in place to guide prevention and eradication activities and the management of non-indigenous populations of Toads and Frogs (Order Anura) in the wild in Victoria. Version Document Status Date Author Reviewed By Approved for Release 1.0 First Draft 26/07/11 Dana Price M. Corry, S. Wisniewski and A. Woolnough 1.1 Second Draft 21/10/11 Dana Price S. Wisniewski 2.0 Final Draft 11/01/12 Dana Price S.Wisniewski 2.1 Final 27/06/12 Dana Price M.Corry Visual Standard approved by ADP 3.0 New Final 6/10/15 Dana Price A.Kay New DEDJTR template and document revision Acknowledgement and special thanks to Peter Courtenay, Senior Curator, Zoos Victoria, for reviewing this document and providing comments. Published by the Department of Economic Development, Jobs, Transport and Resources, Agriculture Victoria, May 2016 © The State of Victoria 2016. This publication is copyright. No part may be reproduced by any process except in accordance with the provisions of the Copyright Act 1968. Authorised by the Department of Economic Development, Jobs, Transport and Resources, 1 Spring Street, Melbourne 3000. Front cover: Cane Toad (Rhinella marinus) Photo: Image courtesy of Ryan Melville, HRIA Team, DEDJTR For more information about Agriculture Victoria go to www.agriculture.vic.gov.au or phone the Customer Service Centre on 136 186. ISBN 978-1-925532-37-1 (pdf/online) Disclaimer This publication may be of assistance to you but the State of Victoria and its employees do not guarantee that the publication is without flaw of any kind or is wholly appropriate for your particular purposes and therefore disclaims all liability for any error, loss or other consequence which may arise from you relying on any information in this publication. -
Henry Spira Papers [Finding Aid]. Library of Congress. [PDF Rendered
Henry Spira Papers A Finding Aid to the Collection in the Library of Congress Manuscript Division, Library of Congress Washington, D.C. 2017 Contact information: http://hdl.loc.gov/loc.mss/mss.contact Additional search options available at: http://hdl.loc.gov/loc.mss/eadmss.ms017017 LC Online Catalog record: http://lccn.loc.gov/mm00084743 Prepared by Colleen Benoit, Karen Linn Femia, Nate Scheible with the assistance of Jake Bozza Collection Summary Title: Henry Spira Papers Span Dates: 1906-2002 Bulk Dates: (bulk 1974-1998) ID No.: MSS84743 Creator: Spira, Henry, 1927-1998 Extent: 120,000 items; 340 containers plus 6 oversize ; 140 linear feet ; 114 digital files (3.838 GB) Language: Collection material in English Location: Manuscript Division, Library of Congress, Washington, D.C. Summary: Animal welfare advocate and political activist. Correspondence, writings, notes, newspaper clippings, advertisements, printed matter, and photographs, primarily relating to Spira's work in the animal welfare movement after 1974. Selected Search Terms The following terms have been used to index the description of this collection in the Library's online catalog. They are grouped by name of person or organization, by subject or location, and by occupation and listed alphabetically therein. People Douglas, William Henry James. Fitzgerald, Pegeen. Gitano, Henry, 1927-1998. Grandin, Temple. Kupferberg, Tuli. Rack, Leonard. Rowan, Andrew N. Singer, Peter, 1946- Singer, Peter, 1946- Ethics into action : Henry Spira and the animal rights movement. 1998. Spira, Henry, 1927-1998--Political and social views. Spira, Henry, 1927-1998. Trotsky, Leon, 1879-1940. Trull, Frankie. Trutt, Fran. Weiss, Myra Tanner. Organizations American Museum of Natural History.