― D12 - 1 ― 医学中央雑誌刊行会・医学用語シソーラス 第9版( 2019) カテゴリー別リスト
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The 2021 List of Pharmacological Classes of Doping Agents and Doping Methods
BGBl. III - Ausgegeben am 8. Jänner 2021 - Nr. 1 1 von 23 The 2021 list of pharmacological classes of doping agents and doping methods www.ris.bka.gv.at BGBl. III - Ausgegeben am 8. Jänner 2021 - Nr. 1 2 von 23 www.ris.bka.gv.at BGBl. III - Ausgegeben am 8. Jänner 2021 - Nr. 1 3 von 23 THE 2021 PROHIBITED LIST WORLD ANTI-DOPING CODE DATE OF ENTRY INTO FORCE 1 January 2021 Introduction The Prohibited List is a mandatory International Standard as part of the World Anti-Doping Program. The List is updated annually following an extensive consultation process facilitated by WADA. The effective date of the List is 1 January 2021. The official text of the Prohibited List shall be maintained by WADA and shall be published in English and French. In the event of any conflict between the English and French versions, the English version shall prevail. Below are some terms used in this List of Prohibited Substances and Prohibited Methods. Prohibited In-Competition Subject to a different period having been approved by WADA for a given sport, the In- Competition period shall in principle be the period commencing just before midnight (at 11:59 p.m.) on the day before a Competition in which the Athlete is scheduled to participate until the end of the Competition and the Sample collection process. Prohibited at all times This means that the substance or method is prohibited In- and Out-of-Competition as defined in the Code. Specified and non-Specified As per Article 4.2.2 of the World Anti-Doping Code, “for purposes of the application of Article 10, all Prohibited Substances shall be Specified Substances except as identified on the Prohibited List. -
WHO Drug Information Vol. 12, No. 3, 1998
WHO DRUG INFORMATION VOLUME 12 NUMBER 3 • 1998 RECOMMENDED INN LIST 40 INTERNATIONAL NONPROPRIETARY NAMES FOR PHARMACEUTICAL SUBSTANCES WORLD HEALTH ORGANIZATION • GENEVA Volume 12, Number 3, 1998 World Health Organization, Geneva WHO Drug Information Contents Seratrodast and hepatic dysfunction 146 Meloxicam safety similar to other NSAIDs 147 Proxibarbal withdrawn from the market 147 General Policy Issues Cholestin an unapproved drug 147 Vigabatrin and visual defects 147 Starting materials for pharmaceutical products: safety concerns 129 Glycerol contaminated with diethylene glycol 129 ATC/DDD Classification (final) 148 Pharmaceutical excipients: certificates of analysis and vendor qualification 130 ATC/DDD Classification Quality assurance and supply of starting (temporary) 150 materials 132 Implementation of vendor certification 134 Control and safe trade in starting materials Essential Drugs for pharmaceuticals: recommendations 134 WHO Model Formulary: Immunosuppressives, antineoplastics and drugs used in palliative care Reports on Individual Drugs Immunosuppresive drugs 153 Tamoxifen in the prevention and treatment Azathioprine 153 of breast cancer 136 Ciclosporin 154 Selective serotonin re-uptake inhibitors and Cytotoxic drugs 154 withdrawal reactions 136 Asparaginase 157 Triclabendazole and fascioliasis 138 Bleomycin 157 Calcium folinate 157 Chlormethine 158 Current Topics Cisplatin 158 Reverse transcriptase activity in vaccines 140 Cyclophosphamide 158 Consumer protection and herbal remedies 141 Cytarabine 159 Indiscriminate antibiotic -
Characterisation of the Α1b-Adrenoceptor by Modeling, Dynamics and Virtual Screening Kapil Jain B.Pharm, M.S.(Pharm.)
Characterisation of the α1B-Adrenoceptor by Modeling, Dynamics and Virtual Screening Kapil Jain B.Pharm, M.S.(Pharm.) A Thesis submitted for the degree of Master of Philosophy at The University of Queensland in 2018 Institute for Molecular Bioscience 0 Abstract G protein-coupled receptors (GPCRs) are the largest druggable class of proteins yet relatively little is known about the mechanism by which agonist binding induces the conformational changes necessary for G protein activation and intracellular signaling. Recently, the Kobilka group has shown that agonists, neutral antagonists and inverse agonists stabilise distinct extracellular surface (ECS) conformations of the β2-adrenergic receptor (AR) opening up new possibilities for allosteric drug targeting at GPCRs. The goal of this project is to extend these studies to define how the ECS conformation of the α1B-AR changes during agonist binding and develop an understanding of ligand entry and exit mechanisms that may help in the design of specific ligands with higher selectivity, efficacy and longer duration of action. Two parallel approaches were initiated to identify likely functional residues. The role of residues lining the primary binding site were predicted by online web server (Q-Site Finder) while secondary binding sites residues were predicted from molecular dynamics (MD) simulations. Predicted functionally significant residues were mutated and their function was established using FLIPR, radioligand and saturation binding assays. Despite the α1B-AR being pursued as a drug target for over last few decades, few specific agonists and antagonists are known to date. In an attempt to address this gap, we pursued ligand-based approach to find potential new leads. -
C3did PNAS Pure
Structure of the CR3 I domain in complex with C3d Structural insight on the recognition of surface-bound opsonins by the integrin I domain of complement receptor 3 Goran Bajic1, Laure Yatime1, Robert B. Sim2, Thomas Vorup-Jensen3†, and Gregers R. Andersen1,† 1Dept. of Molecular Biology and Genetics, Aarhus University, Gustav Wieds Vej 10C, DK- 8000 Aarhus, Denmark 2Dept. of Pharmacology, University of Oxford, Mansfield Road, Oxford OX1 3QT, United Kingdom 3Dept. of Biomedicine, Aarhus University, Wilhelm Meyers Allé 4, DK-8000 Aarhus, Denmark †Contact: Dr. Thomas Vorup-Jensen, Biophysical Immunology Laboratory, Dept. of Biomedicine, Aarhus University, Wilhelm Meyers Allé 4, DK-8000 Aarhus, Denmark. Tel: +45 87167853; E-mail: [email protected] Dr. Gregers R. Andersen, Dept. of Molecular Biology and Genetics , Aarhus University, Gustav Wieds Vej 10C, DK-8000 Aarhus, Denmark. Tel: +45 87 15 55 07; E-mail: [email protected] 1 Structure of the CR3 I domain in complex with C3d Complement receptors (CR), expressed notably on myeloid and lymphoid cells, play an essential function in the elimination of complement-opsonized pathogens and apoptotic/necrotic cells. In addition, these receptors are crucial for the cross-talk between the innate and adaptive branches of the immune system. CR3 (also known as Mac-1, integrin M2, or CD11b/CD18) is expressed on all macrophages and recognizes iC3b on complement-opsonized objects, enabling their phagocytosis. We demonstrate that the C3d moiety of iC3b harbours the binding site for the CR3 I domain, and our structure of the C3d:I domain complex rationalizes the CR3 selectivity for iC3b. -
Computational Methods for Prediction and Classification of G Protein-Coupled Receptors Khodeza Begum University of Texas at El Paso, [email protected]
University of Texas at El Paso DigitalCommons@UTEP Open Access Theses & Dissertations 2017-01-01 Computational methods for prediction and classification of G protein-coupled receptors Khodeza Begum University of Texas at El Paso, [email protected] Follow this and additional works at: https://digitalcommons.utep.edu/open_etd Part of the Bioinformatics Commons, Computer Sciences Commons, and the Mathematics Commons Recommended Citation Begum, Khodeza, "Computational methods for prediction and classification of G protein-coupled receptors" (2017). Open Access Theses & Dissertations. 408. https://digitalcommons.utep.edu/open_etd/408 This is brought to you for free and open access by DigitalCommons@UTEP. It has been accepted for inclusion in Open Access Theses & Dissertations by an authorized administrator of DigitalCommons@UTEP. For more information, please contact [email protected]. COMPUTATIONAL METHODS FOR PREDICTION AND CLASSIFICATION OF G PROTEIN-COUPLED RECEPTORS KHODEZA BEGUM Master’s Program in Computational Science APPROVED: Ming-Ying Leung, Ph.D., Chair Rachid Skouta, Ph.D. Xiaogang Su, Ph.D. Charlotte M. Vines, Ph.D. Charles Ambler, Ph.D. Dean of the Graduate School Copyright © by Khodeza Begum 2017 COMPUTATIONAL METHODS FOR PREDICTION AND CLASSIFICATION OF G PROTEIN-COUPLED RECEPTORS by KHODEZA BEGUM, B.S. THESIS Presented to the Faculty of the Graduate School of The University of Texas at El Paso in Partial Fulfillment of the Requirements for the Degree of MASTER OF SCIENCE COMPUTATIONAL SCIENCE PROGRAM THE UNIVERSITY OF TEXAS AT EL PASO December 2017 Acknowledgements I would first like to thank my advisor Dr. Ming-Ying Leung for the continuous support and encouragement in my study and thesis. -
Evidence-Based Guidelines for Treating Depressive Disorders with Antidepressants
JOP0010.1177/0269881115581093Journal of PsychopharmacologyCleare et al. 581093research-article2015 BAP Guidelines Evidence-based guidelines for treating depressive disorders with antidepressants: A revision of the 2008 British Association Journal of Psychopharmacology 2015, Vol. 29(5) 459 –525 for Psychopharmacology guidelines © The Author(s) 2015 Reprints and permissions: sagepub.co.uk/journalsPermissions.nav DOI: 10.1177/0269881115581093 jop.sagepub.com Anthony Cleare1, CM Pariante2 and AH Young3 With expert co-authors (in alphabetical order): IM Anderson4, D Christmas5, PJ Cowen6, C Dickens7, IN Ferrier8, J Geddes9, S Gilbody10, PM Haddad11, C Katona12, G Lewis12, A Malizia13, RH McAllister-Williams14, P Ramchandani15, J Scott16, D Taylor17, R Uher18 and the members of the Consensus Meeting19 Endorsed by the British Association for Psychopharmacology Abstract A revision of the 2008 British Association for Psychopharmacology evidence-based guidelines for treating depressive disorders with antidepressants was undertaken in order to incorporate new evidence and to update the recommendations where appropriate. A consensus meeting involving experts in depressive disorders and their management was held in September 2012. Key areas in treating depression were reviewed and the strength of evidence and clinical implications were considered. The guidelines were then revised after extensive feedback from participants and interested parties. A literature review is provided which identifies the quality of evidence upon which the recommendations -
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Med J Chin PLA, Vol. 42, No. 12, December 1, 2017 ǂ1029 䃲eڝeᠳࢃ̺ ӵϔߙᡇϊҍᣴ໓͌ܠᣴ̹ࢴҝᣱ ͙ࡧጴࡻцᕑ䃶ܲц ᕑࡧ႒̿͆ༀцۇ͙Ϧℽ㼏ᩪ 䛹⫳ࡧ႒̿͆ༀцۇ͙Ϧℽ㼏ᩪ ͙ࡧጴࡻцᕑ䃶ܲцᕑ䃶โ̿͆ༀц 喞ᕑٷ䩚䃹]Ȟ݇ѐ喞㵬ᕓнڟ] [͙పܲㆧण]ȞR605.97ȞȞȞȞ[᪳⡚ᴳᔃⴭ]ȞAȞȞȞȞ[᪳「㑂ण]Ȟ0577-7402(2017)12-1029-10 [DOI]Ȟ10.11855/j.issn.0577-7402.2017.12.02 Chinese emergency medicine expert consensus on diagnosis and treatment of traumatic hemorrhagic shock Emergency Medicine Branch of Chinese Medical Doctor Association People’s Liberation Army Professional Committee of Emergency Medicine People’s Liberation Army Professional Committee of Critical Care Medicine Professional Committee of Emergency Surgery, Emergency Medicine Branch of Chinese Medical Doctor Association 1ȞẮȞȞ䔜 ㏒10%⤯ڔѐ᭛ᠳᱦᷜ߇҈⩔κϦѿऺᝬ䕌⮰ᱦѿ㏿ᲰႸ᪠ᕓ⮰ⵠ౻সߋ㘩䯈ⶹȠᢚWHO㐋䃍喏݇ 40ᆭБ̷Ϧ㓐⮰仂㺭₧ఌ[1]Ƞ⤯ڔ⮰₧ύস16%⮰㜠₷⫱ҷఌ݇ѐᝬ㜠喏सᬢ݇ѐ᭛ ᄽȟ㏰㏳╸∔̹䋟ȟ㏲㘊Џ䅎㈶Νসۻ᭛ᠳ݇ѐ䕌ᱦѿ๓䛻㵬ᝬ㜠ᰵᩴᓖ⣛㵬䛻ٷѐ㵬ᕓн݇ ፤፤ऴᎢѺ㵬ࢷ(͵ͦᩢ㑕ࢷ┯90mmHg喏㘵ࢷ┯20mmHg喏ᝂ࣋ᰵ倄㵬ٷஔჄߋ㘩ःᢋ⮰⫱⤲⩋⤲䓳⼷Ƞн ࢷ㔱ᩢ㑕ࢷ㜖ദ㏫̷䭹Ĺ40mmHg)Ƞ30%~40%⮰݇ѐᗏ㔱₧ύ᭛ఌ㵬䓳ๆᝬ㜠喏ₐㆧᗏ㔱͙喏ᰵ̬䘔ܲ ఌͦ䩅䄛⮰⇧ᵴࣶ̹ᖜᑿ⮰⇧⫃ᣖ㔸₧ύ喏ࢌ10%~20%Ƞᕑᕓ㵬᭛݇ѐ仂㺭⮰छ䶰䭞ᕓ₧ఌ[2-3]Ƞ ᄽๆஔჄߋ㘩䯈ⶹ㐨ऴᒭۻ䛹㺭喏छᰵᩴڟᄥκ͑䛹݇ѐᗏ㔱㜟ٷ㵬喏㏌㵬ᕓнܦࣶᬢȟᔗ䕋ᣓݢ (multiple organ dysfunction syndrome喏MODS)⮰ࣽ⩋喏䭹Ѻ₧ύ⢳Ƞ ⮰ᕑ䃶ٷ䃲ᬔ㻰㠯স倄݇ѐ㵬ᕓнڝᠳࢃȠ᱘ڟᕑ⇧⮰Ⱔ㉓ٷⰚݹᅆᬌ݇ѐ㵬ᕓн ⇧喏ͦᕑ䃶ࡧጴӇ䃶⫃ӉᢚȠ ⤲⩋⤲⫱⮰ٷ2Ȟ݇ѐ㵬ᕓн ᭛㵬ქ䛻̺㵬ネქ⼛⮰̹ࡥ䙹喏䕌โঔ㏰㏳╸∔̹䋟喏Ϻ㔸ᑁٴ⮰⫱⤲⩋⤲ऄࡂ仂ٷѐ㵬ᕓн݇ 㘻ஔჄ⮰㐓ࣽᕓᢋჟȠڱ㵬䯈ⶹБࣶ܉䊣ᓚᓖ⣛ऄࡂȟ⅓Џ䅎ߔ߇႒ᐮ፤ȟ►⫳ࣹᏀȟ ᭛䛹㺭㘻ڢᰬᵥ᱘⮰⫱⤲⩋⤲ᩥऄ᭛㵬ᝬ㜠⮰ᓚᓖ⣛ߋ㘩䯈ⶹ喏ᅐٷ2.1Ȟᓚᓖ⣛ऄࡂȞ݇ѐ㵬ᕓн ၼὍᐻ(damage associatedܲڟϓ⩋ᢋѐⰤٷஔᓚᓖ⣛ᩥऄȠᄨ㜠ᓚᓖ⣛ߋ㘩䯈ⶹ⮰ͧ㺭ᱦݢ࠱᠘喝Ŗн Ꮐむࣶᣓᕓ►⫳ࣹᏀ喏ᑁ䊣㵬⫗ٹ㯷⮩স倄䓭⼧⢳㯷⮩1㼒ࣽٷmolecular patterns喏DAMP)[4-5]喏ຮ☙н 㵬㈧܉⯚ᢋѐᑁ䊣ڱᄽ喏ᰬ㏴ᄨ㜠㏰㏳╸∔̹䋟ȟ㏲㘊㑦⅓喞ŗۻ⯚ᢋѐȟℇ㏲㵬ネ⍃ȟᓖ⣛ქ䛻ڱネ 㐋⓬≧ȟᓚ㵬ᴿᒎ喏䭧ඊℇ㏲㵬ネࣶ㵬ネ㜾㑕ߋ㘩䯈ⶹ喏ߌ䛹㏰㏳㑦㵬㑦⅓喞Ř݇ѐᝬ㜠⮰ᠭ㐙ȟᑦ◴ ᓚᓖ⣛䯈ⶹȠޓߋ㘩喏ᄨ㜠ࣹᄰᕓ㵬ネ㜾㑕ߋ㘩㈶Ν喏ߌ⇸ܲڱ⮰ݦ⓬ᒝ৹⺊㏻ ⅓̺(ᗏ㔱ႄ⅓Џ䅎ߔ߇႒ᐮ፤喏࢟⅓ӇᏀ(DO2ٷ2.2Ȟ⅓Џߔ߇႒ᐮ፤ࣶ㏲㘊Џ䅎ᩥऄȞ݇ѐ㵬ᕓн -
Fully Automated Dried Blood Spot Sample Preparation Enables the Detection of Lower Molecular Mass Peptide and Non-Peptide Doping Agents by Means of LC-HRMS
Analytical and Bioanalytical Chemistry (2020) 412:3765–3777 https://doi.org/10.1007/s00216-020-02634-4 RESEARCH PAPER Fully automated dried blood spot sample preparation enables the detection of lower molecular mass peptide and non-peptide doping agents by means of LC-HRMS Tobias Lange1 & Andreas Thomas1 & Katja Walpurgis1 & Mario Thevis1,2 Received: 10 December 2019 /Revised: 26 March 2020 /Accepted: 31 March 2020 # The Author(s) 2020 Abstract The added value of dried blood spot (DBS) samples complementing the information obtained from commonly routine doping control matrices is continuously increasing in sports drug testing. In this project, a robotic-assisted non-destructive hematocrit measurement from dried blood spots by near-infrared spectroscopy followed by a fully automated sample preparation including strong cation exchange solid-phase extraction and evaporation enabled the detection of 46 lower molecular mass (< 2 kDa) peptide and non-peptide drugs and drug candidates by means of LC-HRMS. The target analytes included, amongst others, agonists of the gonadotropin-releasing hormone receptor, the ghrelin receptor, the human growth hormone receptor, and the antidiuretic hormone receptor. Furthermore, several glycine derivatives of growth hormone–releasing peptides (GHRPs), argu- ably designed to undermine current anti-doping testing approaches, were implemented to the presented detection method. The initial testing assay was validated according to the World Anti-Doping Agency guidelines with estimated LODs between 0.5 and 20 ng/mL. As a proof of concept, authentic post-administration specimens containing GHRP-2 and GHRP-6 were successfully analyzed. Furthermore, DBS obtained from a sampling device operating with microneedles for blood collection from the upper arm were analyzed and the matrix was cross-validated for selected parameters. -
(19) United States (12) Patent Application Publication (10) Pub
US 20050181041A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2005/0181041 A1 Goldman (43) Pub. Date: Aug. 18, 2005 (54) METHOD OF PREPARATION OF MIXED Related US. Application Data PHASE CO-CRYSTALS WITH ACTIVE AGENTS (60) Provisional application No. 60/528,232, ?led on Dec. 9, 2003. Provisional application No. 60/559,862, ?led (75) Inventor: David Goldman, Portland, CT (US) on Apr. 6, 2004. Correspondence Address: Publication Classi?cation LEYDIG VOIT & MAYER, LTD (51) Int. Cl.7 ....................... .. A61K 31/56; A61K 38/00; TWO PRUDENTIAL PLAZA, SUITE 4900 A61K 9/64 180 NORTH STETSON AVENUE (52) US. Cl. ............................ .. 424/456; 514/179; 514/2; CHICAGO, IL 60601-6780 (US) 514/221 (73) Assignee: MedCrystalForms, LLC, Hunt Valley, (57) ABSTRACT MD This invention pertains to a method of preparing mixed phase co-crystals of active agents With one or more materials (21) Appl. No.: 11/008,034 that alloWs the modi?cation of the active agent to a neW physical/crystal form With unique properties useful for the delivery of the active agent, as Well as compositions com (22) Filed: Dec. 9, 2004 prising the mixed phase co-crystals. Patent Application Publication Aug. 18, 2005 Sheet 1 0f 8 US 2005/0181041 A1 FIG. 1a 214.70°C z.m."m.n... 206.98°C n..0ao 142 OJ/g as:20m=3: -0.8 -1.0 40 90 1:10 2110 Temperture (°C) FIG. 1b 0.01 as:22“.Km: 217 095 24221.4 39Jmum/Q -0.8 35 155 255 255 Temperture (°C) Patent Application Publication Aug. -
Urinary Trypsin Inhibitor: Miraculous Medicine in Many Surgical Situations?
Korean J Anesthesiol 2010 Apr; 58(4): 325-327 Editorial DOI: 10.4097/kjae.2010.58.4.325 Urinary trypsin inhibitor: miraculous medicine in many surgical situations? Jong In Han Department of Anesthesiology and Pain Medicine, School of Medicine, Ewha Womans University, Seoul, Korea Recently, we encounter several articles regarding urinary Trypsin inhibitors act to suppress the proteolytic action trypsin inhibitor (UTI) published nationally [1,2]. When we take of trypsin on a variety of tissues and exert a localized anti- a glance at these articles, it feels like UTI acts as a miraculous inflammatory effect [8]. Therefore UTI is indicated for acute medicine on patients under general anesthesia because of inflammatory disorders, including acute pancreatitis, systemic its protection effect against surgical stress. Yet, even after the inflammatory reaction syndrome, circulatory insufficiency, first report on antitryptic action of urine by Bauer and Reich Stevens-Johnson syndrome, Toxic epidermal necrolysis (TEN), III in 1909 [3]; the start of use of the term UTI by Astrup and disseminated intravascular coagulation (DIC) and multiple Sterndorff in 1955 [4]; and numerous animal experiments and organ failure [9]. Previous studies of UTI have focused mainly clinical research done about UTI (803 articles about UTI and on modulating inflammatory reaction. UTI attenuates the 982 articles about ulinastatin in SCOPUS), UTI is not yet to elevation of neutrophil elastase release, thereby blunting the be used commonly. Therefore, it is important to understand rise of pro-inflammatory cytokine level; however, the actual the reason behind this situation. According to the webpage of mechanism in vivo is not clear [10]. -
Characterization of Kindlin3 in Integrin Functions
This document is downloaded from DR‑NTU (https://dr.ntu.edu.sg) Nanyang Technological University, Singapore. Characterization of kindlin3 in Integrin functions Feng, Chen 2013 Feng, C. (2013). Characterization of kindlin3 in Integrin functions. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/54828 https://doi.org/10.32657/10356/54828 Downloaded on 27 Sep 2021 23:43:18 SGT Characterization of kindlin3 in Integrin functions Feng Chen School of Biological Sciences 2013 Characterization of kindlin3 in Integrin functions Feng Chen School of Biological Sciences A thesis submitted to the Nanyang Technological University in partial fulfillment of the requirement for the degree of Doctor of Philosophy 2013 Acknowledgements First, I would like to thank my supervisor Dr. Tan Suet Mien, for his guidance during the course of my studies. He gave me many helpful suggestions for my project and has been supportive of me for trying out new ideas. I’m grateful to Dr. Yau Yin Hoe and Assoc Prof. Shochat for helping me with the SPR analyses. I wish to thank my lab mates Man Li, Yan Feng, Zhi Hong, Xiao Yan, Rhoda, Henni, Sze Wah, Manisha, Joel, Li Teng, and Jessie for their helpful suggestions and assistance. Special thanks to Dr. Tang Man Li for her guidance at the beginning of my study and Tang Xiao Yan and Ong Li Teng for the support they gave me when I encounter problems in my studies. Finally, I am indebted to my parents, husband, and friends. They provided me selfless help and encouragement during the course of my Ph.D. -
Mutations Affecting Cell Fates and Cellular Rearrangements During Gastrulation in Zebrafish
Development 123, 67-80 67 Printed in Great Britain © The Company of Biologists Limited 1996 DEV3335 Mutations affecting cell fates and cellular rearrangements during gastrulation in zebrafish Lilianna Solnica-Krezel†, Derek L. Stemple, Eliza Mountcastle-Shah, Zehava Rangini‡, Stephan C. F. Neuhauss, Jarema Malicki, Alexander F. Schier§, Didier Y. R. Stainier¶, Fried Zwartkruis**, Salim Abdelilah and Wolfgang Driever* Cardiovascular Research Center, Massachusetts General Hospital and Harvard Medical School, 13th Street, Bldg. 149, Charlestown, MA 02129, USA †Present address: Department of Molecular Biology, Vanderbilt University, Box 1820, Station B, Nashville, TN 37235, USA ‡Present address: Department of Oncology, Sharett Institute, Hadassah Hospital, Jerusalem 91120, Israel §Present address: Skirball Institute of Biomolecular Medicine, NYU Medical Center, 550 First Avenue, New York, NY 10016, USA ¶Present address: School of Medicine, Department of Biochemistry and Biophysics, UCSF, San Francisco, CA 94143-0554, USA **Present address: Laboratory for Physiological Chemistry, Utrecht University, Universiteitsweg 100, 3584 CG Utrecht, The Netherlands *Author for correspondence (e-mail: [email protected]) SUMMARY One of the major challenges of developmental biology is mutations in these two groups identify genes necessary for understanding the inductive and morphogenetic processes the formation, maintenance or function of the dorsal that shape the vertebrate embryo. In a large-scale genetic organizer and the ventral signaling pathway, respectively. screen for zygotic effect, embryonic lethal mutations in Mutations in the third group affect primarily cellular zebrafish we have identified 25 mutations that affect spec- rearrangements during gastrulation and have complex ification of cell fates and/or cellular rearrangements during effects on cell fates in the embryo.