Leeuwenhoek's Legatees and Beijerinck's Beneficiaries
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Do the Patient Protection and Affordable Care Act's Provisions Rescue Commercial Genetic Research After Association for Molecular Pathology, Et Al., V
Health Law and Policy Brief Volume 5 | Issue 2 Article 5 10-16-2013 Do the Patient Protection and Affordable Care Act's Provisions Rescue Commercial Genetic Research after Association for Molecular Pathology, et al., v. U.S. Patent and Trademark Office, et al. Thomas J. Kniffen American University Washington College of Law Follow this and additional works at: http://digitalcommons.wcl.american.edu/hlp Part of the Health Law Commons Recommended Citation Kniffen, Thomas J. "Do the Patient Protection and Affordable Care Act's Provisions Rescue Commercial Genetic Research after Association for Molecular Pathology, et al., v. U.S. Patent and Trademark Office, et al." Health Law & Policy Brief 5, no. 2 (2011): 32-38. This Article is brought to you for free and open access by Digital Commons @ American University Washington College of Law. It has been accepted for inclusion in Health Law and Policy Brief by an authorized administrator of Digital Commons @ American University Washington College of Law. For more information, please contact [email protected]. PPACA's provisions and its potential to rescue In 4ssociation for Molecular Pathology et al. commercial genetic research if the Federal v. US. Patent and lrademark Office, et al., the Circuit's decision in Association for Molecular U.S. District Court for the Southern District Pathology is reversed by the Supreme Court. of New York invalidated a claim to patent genetically developed material on the basis L, Patecints ad eneicResearch, that "[t]he patents issued by the [United States AU.S Constitution Patent Office] are directed to a law of nature and were therefore improperly granted."1 The Congress is authorized by the U.S. -
Antony Van Leeuwenhoek, the Father of Microscope
Turkish Journal of Biochemistry – Türk Biyokimya Dergisi 2016; 41(1): 58–62 Education Sector Letter to the Editor – 93585 Emine Elif Vatanoğlu-Lutz*, Ahmet Doğan Ataman Medicine in philately: Antony Van Leeuwenhoek, the father of microscope Pullardaki tıp: Antony Van Leeuwenhoek, mikroskobun kaşifi DOI 10.1515/tjb-2016-0010 only one lens to look at blood, insects and many other Received September 16, 2015; accepted December 1, 2015 objects. He was first to describe cells and bacteria, seen through his very small microscopes with, for his time, The origin of the word microscope comes from two Greek extremely good lenses (Figure 1) [3]. words, “uikpos,” small and “okottew,” view. It has been After van Leeuwenhoek’s contribution,there were big known for over 2000 years that glass bends light. In the steps in the world of microscopes. Several technical inno- 2nd century BC, Claudius Ptolemy described a stick appear- vations made microscopes better and easier to handle, ing to bend in a pool of water, and accurately recorded the which led to microscopy becoming more and more popular angles to within half a degree. He then very accurately among scientists. An important discovery was that lenses calculated the refraction constant of water. During the combining two types of glass could reduce the chromatic 1st century,around year 100, glass had been invented and effect, with its disturbing halos resulting from differences the Romans were looking through the glass and testing in refraction of light (Figure 2) [4]. it. They experimented with different shapes of clear glass In 1830, Joseph Jackson Lister reduced the problem and one of their samples was thick in the middle and thin with spherical aberration by showing that several weak on the edges [1]. -
Career Guide Biological Sciences Concentration in Microbiology
MAJOR TO BACHELOR OF SCIENCE IN CAREER GUIDE BIOLOGICAL SCIENCES CONCENTRATION IN MICROBIOLOGY Majoring in biological sciences with a concentration in microbiology provides students with intellectual and technical skills required for success in the broad area of microbiology, which includes clinical, environmental, ecological, evolutionary, molecular, metabolic, and physiological perspectives of microbes, including aspects of virology and immunology. Students concentrating in microbiology should also be able to explain the diversity and ABOUT THE MAJOR/ similarity of microbes, including their physiology, mechanisms of pathogenesis and host CONCENTRATION defenses, and unique ecology. SKILLS Research Problem-Solving Ability to Operate Critical Thinking Scientific Equipment Agricultural and Food Scientist Environmental Scientist Quality Control Analyst Bacteriologist Lab Technician* Regulatory Affairs Specialist Biomedical Scientist* Medical Device Specialist Research Microbiologist Biotechnologist* Mycologist Science Educator* Cell Biologist Parasitologists Virologist POTENTIAL CAREER Clinical Microbiologist Public Health Professional OPPORTUNITIES *Additional education/certification may be required COMMON CAREER AREAS FOR THIS MAJOR Organismal/ Research & Biomedical Healthcare Ecological Education Biotechnology Bioinformatics Development Sciences Biology Do volunteer work Get part-time job or internship Did you know UNLV has programs, student A part-time, temporary, and summer job or groups, and academic service-learning internship can -
Phages and Human Health: More Than Idle Hitchhikers
viruses Review Phages and Human Health: More Than Idle Hitchhikers Dylan Lawrence 1,2 , Megan T. Baldridge 1,2,* and Scott A. Handley 2,3,* 1 Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA 2 Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine, St. Louis, MO 63110, USA 3 Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA * Correspondence: [email protected] (M.T.B.); [email protected] (S.A.H.) Received: 2 May 2019; Accepted: 25 June 2019; Published: 27 June 2019 Abstract: Bacteriophages, or phages, are viruses that infect bacteria and archaea. Phages have diverse morphologies and can be coded in DNA or RNA and as single or double strands with a large range of genome sizes. With the increasing use of metagenomic sequencing approaches to analyze complex samples, many studies generate massive amounts of “viral dark matter”, or sequences of viral origin unable to be classified either functionally or taxonomically. Metagenomic analysis of phages is still in its infancy, and uncovering novel phages continues to be a challenge. Work over the past two decades has begun to uncover key roles for phages in different environments, including the human gut. Recent studies in humans have identified expanded phage populations in both healthy infants and in inflammatory bowel disease patients, suggesting distinct phage activity during development and in specific disease states. In this review, we examine our current knowledge of phage biology and discuss recent efforts to improve the analysis and discovery of novel phages. -
Plant Viruses
Western Plant Diagnostic Network1 First Detector News A Quarterly Pest Update for WPDN First Detectors Spring 2015 edition, volume 8, number 2 In this Issue Page 1: Editor’s Note Dear First Detectors, Pages 2 – 3: Intro to Plant Plant viruses cause many important plant diseases and are Viruses responsible for huge losses in crop production and quality in Page 4: Virus nomenclature all parts of the world. Plant viruses can spread very quickly because many are vectored by insects such as aphids and Page 5 – Most Serious World Plant Viruses & Symptoms whitefly. They are a major pest of crop production as well as major pests of home gardens. By mid-summer many fields, Pages 6 – 7: Plant Virus vineyards, orchards, and gardens will see the effects of plant Vectors viruses. The focus of this edition is the origin, discovery, taxonomy, vectors, and the effects of virus infection in Pages 7 - 10: Grapevine plants. There is also a feature article on grapevine viruses. Viruses And, as usual, there are some pest updates from the West. Page 10: Pest Alerts On June 16 – 18, the WPDN is sponsoring the second Invasive Snail and Slug workshop at UC Davis. The workshop Contact us at the WPDN Regional will be recorded and will be posted on the WPDN and NPDN Center at UC Davis: home pages. Have a great summer and here’s hoping for Phone: 530 754 2255 rain! Email: [email protected] Web: https://wpdn.org Please find the NPDN family of newsletters at: Editor: Richard W. Hoenisch @Copyright Regents of the Newsletters University of California All Rights Reserved Western Plant Diagnostic Network News Plant Viruses 2 Ag, Manitoba Photo courtesy Photo Food, and Rural Initiatives and Food, of APS Photo by Giovanni Martelli, U of byBari Giovanni Photo Grapevine Fanleaf Virus Peanut leaf with Squash Mosaic Virus tomato spotted wilt virus Viruses are infectious pathogens that are too small to be seen with a light microscope, but despite their small size they can cause chaos. -
And the Winner Should Be
EDITORIAL And the winner should be… It is time that the tremendous contribution made by Carl Woese to microbiology, medicine and biology as a whole is rewarded by the Nobel committee. Among microbiologists, Carl Woese’s achievements are isolates can allow rapid disease diagnosis. As culturing is well known. His most lauded accomplishments include the not required, sequence analysis can be used to diagnose recognition of an entirely new domain of organisms, many different infectious diseases and is now common in the Archaea1, and the subsequent introduction of the clinical diagnostic laboratories. In the case of Whipple’s three-domain phylogeny2 that is now widely recognized as disease, it even led to the identification of a previously the most accurate reflection of the relatedness of all organ- unknown bacterium (Tropheryma whipplei) as the cause4. isms. We are so used to using neatly organized taxonomic Second, using 16S rRNA-based phylogeny, it is possible to trees to demonstrate the relationships between different study the human microbiota at a detailed level. In recent microorganisms that it is easy to forget that not so long ago years, we have begun to obtain a comprehensive picture the classification of bacteria was considered hopeless. In of the composition of the human-associated microbiota 1963 Roger Stanier, then one of the foremost researchers in various niches, including the gut, skin and oral cavity. in the field of bacterial classification, proclaimed that “The This has led to the insight that shifts in the gut-associated ultimate scientific goal of biological classification cannot microbiota are associated with diseases such as Crohn’s be achieved in the case of bacteria” (REF. -
Genome Evolution of a Bee- Associated Bacterium
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1953 Genome evolution of a bee- associated bacterium ANDREA GARCÍA-MONTANER ACTA UNIVERSITATIS UPSALIENSIS ISSN 1651-6214 ISBN 978-91-513-0986-6 UPPSALA urn:nbn:se:uu:diva-416847 2020 Dissertation presented at Uppsala University to be publicly examined in A1:111a, Biomedicinskt centrum (BMC), Husargatan 3, Uppsala, Thursday, 24 September 2020 at 09:15 for the degree of Doctor of Philosophy. The examination will be conducted in English. Faculty examiner: Professor Matthias Horn (Department of Microbial Ecology and Ecosystem Science, Division of Microbial Ecology). Abstract García-Montaner, A. 2020. Genome evolution of a bee-associated bacterium. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1953. 80 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-513-0986-6. The use of large-scale comparative genomics allows us to explore the genetic diversity and mechanisms of evolution of related organisms. This thesis has focused on the application of such approaches to study Lactobacillus kunkeei, a bacterial inhabitant of the honeybee gut. We produced 102 novel complete genomes from L. kunkeei, which were used in four large comparative studies. In the first study, 41 bacterial strains were isolated from the crop of honeybees whose populations were geographically isolated. Their genome sequences revealed differences in gene contents, including the mobilome, which were mostly phylogroup- specific. However, differences in strain diversity and co-occurrence between both locations were observed. In the second study, we obtained 61 bacterial isolates from neighboring hives at different timepoints during the summer. -
Introduction to Bacteriology and Bacterial Structure/Function
INTRODUCTION TO BACTERIOLOGY AND BACTERIAL STRUCTURE/FUNCTION LEARNING OBJECTIVES To describe historical landmarks of medical microbiology To describe Koch’s Postulates To describe the characteristic structures and chemical nature of cellular constituents that distinguish eukaryotic and prokaryotic cells To describe chemical, structural, and functional components of the bacterial cytoplasmic and outer membranes, cell wall and surface appendages To name the general structures, and polymers that make up bacterial cell walls To explain the differences between gram negative and gram positive cells To describe the chemical composition, function and serological classification as H antigen of bacterial flagella and how they differ from flagella of eucaryotic cells To describe the chemical composition and function of pili To explain the unique chemical composition of bacterial spores To list medically relevant bacteria that form spores To explain the function of spores in terms of chemical and heat resistance To describe characteristics of different types of membrane transport To describe the exact cellular location and serological classification as O antigen of Lipopolysaccharide (LPS) To explain how the structure of LPS confers antigenic specificity and toxicity To describe the exact cellular location of Lipid A To explain the term endotoxin in terms of its chemical composition and location in bacterial cells INTRODUCTION TO BACTERIOLOGY 1. Two main threads in the history of bacteriology: 1) the natural history of bacteria and 2) the contagious nature of infectious diseases, were united in the latter half of the 19th century. During that period many of the bacteria that cause human disease were identified and characterized. 2. Individual bacteria were first observed microscopically by Antony van Leeuwenhoek at the end of the 17th century. -
Laboratory Exercises in Microbiology: Discovering the Unseen World Through Hands-On Investigation
City University of New York (CUNY) CUNY Academic Works Open Educational Resources Queensborough Community College 2016 Laboratory Exercises in Microbiology: Discovering the Unseen World Through Hands-On Investigation Joan Petersen CUNY Queensborough Community College Susan McLaughlin CUNY Queensborough Community College How does access to this work benefit ou?y Let us know! More information about this work at: https://academicworks.cuny.edu/qb_oers/16 Discover additional works at: https://academicworks.cuny.edu This work is made publicly available by the City University of New York (CUNY). Contact: [email protected] Laboratory Exercises in Microbiology: Discovering the Unseen World through Hands-On Investigation By Dr. Susan McLaughlin & Dr. Joan Petersen Queensborough Community College Laboratory Exercises in Microbiology: Discovering the Unseen World through Hands-On Investigation Table of Contents Preface………………………………………………………………………………………i Acknowledgments…………………………………………………………………………..ii Microbiology Lab Safety Instructions…………………………………………………...... iii Lab 1. Introduction to Microscopy and Diversity of Cell Types……………………......... 1 Lab 2. Introduction to Aseptic Techniques and Growth Media………………………...... 19 Lab 3. Preparation of Bacterial Smears and Introduction to Staining…………………...... 37 Lab 4. Acid fast and Endospore Staining……………………………………………......... 49 Lab 5. Metabolic Activities of Bacteria…………………………………………….…....... 59 Lab 6. Dichotomous Keys……………………………………………………………......... 77 Lab 7. The Effect of Physical Factors on Microbial Growth……………………………... 85 Lab 8. Chemical Control of Microbial Growth—Disinfectants and Antibiotics…………. 99 Lab 9. The Microbiology of Milk and Food………………………………………………. 111 Lab 10. The Eukaryotes………………………………………………………………........ 123 Lab 11. Clinical Microbiology I; Anaerobic pathogens; Vectors of Infectious Disease….. 141 Lab 12. Clinical Microbiology II—Immunology and the Biolog System………………… 153 Lab 13. Putting it all Together: Case Studies in Microbiology…………………………… 163 Appendix I. -
Dem Dort Tätigen Herrn E. Van Der Meulen Gelassen Habe
Übersetzung aus der niederländischen Sprache Heute, am sechzehnten Juni zweitausendzwanzig, habe ich, Franciscus Stephanus Kroesemeijer, Gerichtsvollzieher-Anwärter, tätig in der Geschäftsstelle von Diana Johanna Vermeulen, Gerichtsvollzieher mit Niederlassungsort Delft, Niederlande, und mit Geschäftsstelle an der Wallerstraat 14c-16c auf Ersuchen von 1. WILLEM ENGEL, wohnhaft in Rotterdam, 2. der Stiftung VIRUSWAARHEID.NL, mit Sitz in Rotterdam, 3. JEROEN SEBASTIAAN POLS, wohnhaft in Vogelenzang, Gemeinde Bloemendaal; die alle für diese Sache folgenden Wohnort wählen: Nieuwe Prinsenkade 10 in (4811 VC) Breda, die die Anschrift der Anwaltskanzlei Lexion Advocaten, von welcher Kanzlei Anwalt mr. G.C.L. van de Corput, für diese Sache zum Anwalt bestellt wird, AUF GRUND DES DAZU ERTEILTEN BEFEHLS DES ANORDNUNGSRICHTERS FOLGENDE PERSON IM EILVERFAHREN GELADEN DIE JURISTISCHE PERSON ÖFFENTLICHEN RECHTS „STAAT DER NEDERLANDEN“ [Staat der Niederlande] insbesondere das [niederländische Ministerium für Gesundheit, Wohlergehen und Sport] „Ministerie van Volksgezondheid, Welzijn en Sport“, Direktorat Rechtssystem Abteilung Rechtsprechung & Konfliktlösung mit Sitz in Den Haag, wobei ich auf Grund von Artikel 48 Rv. [des niederländisch Zivilprozessrechts] meine Ladungsurkunde im Amtsraum des Generalanwalts beim „Hoge Raad der Nederlanden“ [obersten Gerichtshof der Niederlande] mit Sitz in (2514 CV) Den Haag, Kazernestraat Nr. 52, zugestellt habe und und eine Abschrift hiervon bei dem dort tätigen Herrn E. van der Meulen gelassen habe, (die hier im Weiteren zu nennenden Beweisstücke werden später in das Verfahren eingebracht) UM: am, Donnerstag, dem 25. Juni zweitausendzwanzig, morgens um 11:00 Uhr, persönlich oder durch einen Anwalt vertreten zur Sitzung in einem Eilverfahren vor dem Anordnungsrichter beim Gericht Den Haag, Standort Den Haag, mit der Anschrift Prins Clauslaan 60 zu erscheinen; ANKÜNDIGUNGEN Dabei habe ich der Geladenen Folgendes mitgeteilt: a. -
Lecture 7 Introduction to Viruses Introduction
Lecture 7 Introduction to Viruses Introduction Virus, parasite with a noncellular structure composed mainly of nucleic acid within a protein coat. Most viruses are too small (100–2,000 Angstrom units) to be seen with the light microscope and thus must be studied by electron microscopes. In one stage of their life cycle, in which they are free and infectious, virus particles do not carry out the functions of living cells, such as respiration and growth; in the other stage, however, viruses enter living plant, animal, or bacterial cells and make use of the host cell's chemical energy and its protein- and nucleic acid–synthesizing ability to replicate themselves. Over 5,000 species of viruses have been discovered. Discovery of Viruses In 1884 the French microbiologist Charles Chamberland invented a filter, known today as the Chamberland filter or Chamberland–Pasteur filter that has pores smaller than bacteria. Thus he could pass a solution containing bacteria through the filter and completely remove them from the solution. In the early 1890s the Russian biologist Dmitri Ivanovsky used this filter to study what became known as the tobacco mosaic virus. His experiments showed that extracts from the crushed leaves of infected tobacco plants remain infectious after filtration. At the same time several other scientists proved that, although these agents (later called viruses) were different from bacteria, they could still cause disease, and they were about one hundredth the size of bacteria. In 1899 the Dutch microbiologist Martinus Beijerinck observed that the agent multiplied only in dividing cells. Having failed to demonstrate its particulate nature he called it a "contagium vivum fluidum", a "soluble living germ". -
Microbiology Mary Jane Ferraro and Robert C
Chapter Microbiology Mary Jane Ferraro and Robert C. Moellering Jr. he history of Microbiology (or Bacte- abrupt departure the following year, Dr. Law- Triology, as it was originally known) at the rence Kunz, who had come to the MGH as an Massachusetts General Hospital (MGH) is a Assistant Bacteriologist in 1952, assumed de facto complex one. Although Dr. Reginald Heber responsibility for the laboratory until he was offi - Fitz’s pioneering work established the pathogen- cially appointed chief in 1956. During his tenure esis of appendicitis in 1886 (15, 41; and see chapter the Department of Bacteriology developed close 2), the laboratory specialty of microbiology owes ties with the Infectious Diseases Division and the its origins to Dr. James Homer Wright, who was Department of Medicine. Th is was also a time appointed Pathologist at MGH in 1896. Wright during which a number of “boutique” clinical was involved in a number of landmark studies laboratories sprang up throughout the hospital. in the etiology of parasitic and other infections, Microbiology and Infectious Diseases were no established the fi rst diagnostic bacteriology labo- exception, and in rapid order independent labo- ratory functions at the MGH, and hired several ratories of Antibiotic Blood Levels, Parasitology, physicians to undertake bacteriological work in and Virology were established in the Infectious the department. In 1925, just before the end of Dr. Diseases Unit. All these had close relationships Wright’s tenure as chief, the offi cial position of with the Bacteriology Laboratory as well. In 1989 Bacteriologist was established in the Department the activities of the Bacteriology/Clinical Micro- of Pathology, and this was held in succession by biology Laboratory were once again returned to Drs.