Corneal Endotheliitis with Cytomegalovirus Infection of Persisted
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Role of NS1 Antibodies in the Pathogenesis of Acute Secondary Dengue Infection
ARTICLE DOI: 10.1038/s41467-018-07667-z OPEN Role of NS1 antibodies in the pathogenesis of acute secondary dengue infection Deshni Jayathilaka1, Laksiri Gomes1, Chandima Jeewandara1, Geethal.S.Bandara Jayarathna1, Dhanushka Herath1, Pathum Asela Perera1, Samitha Fernando1, Ananda Wijewickrama2, Clare S. Hardman3, Graham S. Ogg3 & Gathsaurie Neelika Malavige 1,3 The role of NS1-specific antibodies in the pathogenesis of dengue virus infection is poorly 1234567890():,; understood. Here we investigate the immunoglobulin responses of patients with dengue fever (DF) and dengue hemorrhagic fever (DHF) to NS1. Antibody responses to recombinant-NS1 are assessed in serum samples throughout illness of patients with acute secondary DENV1 and DENV2 infection by ELISA. NS1 antibody titres are significantly higher in patients with DHF compared to those with DF for both serotypes, during the critical phase of illness. Furthermore, during both acute secondary DENV1 and DENV2 infection, the antibody repertoire of DF and DHF patients is directed towards distinct regions of the NS1 protein. In addition, healthy individuals, with past non-severe dengue infection have a similar antibody repertoire as those with mild acute infection (DF). Therefore, antibodies that target specific NS1 epitopes could predict disease severity and be of potential benefit in aiding vaccine and treatment design. 1 Centre for Dengue Research, University of Sri Jayewardenepura, Nugegoda 10100, Sri Lanka. 2 National Institute of Infectious Diseases, Angoda 10250, Sri Lanka. 3 MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, Oxford NIHR Biomedical Research Centre, Oxford OX3 9DS, UK. These authors contributed equally: Deshni Jayathilaka, Laksiri Gomes. The authors jointly supervised this work: Graham S. -
IHC) Outreach Services
Immunohistochemistry (IHC) Outreach Services Note t ype of fixative used if not neutral buffered f ormalin. Note t ype of tissue/specim en Unless specified otherwise, positive and negative controls react satisfactoril y. Antibody Classif ications: – IVD (In Vitro Diagnosis) – No disclaimer required. – ASR (Anal yte Specific Reagent) – m ust use a disclaimer on the report (See Belo w) ASR required disclaimer T his test was developed a nd its perform ance characteristics determ ined b y Marshf ield Labs. It has not been cleared or approved b y th e U.S. Food and Drug Adm inistration. T he FDA has determ ined that such clearance or approval is not necessar y. T his test is used f or clinical purposes. It should not be regarded as investigational or f or research. T his laborator y is certif ied under the Clinical Laborator y Im provem ent Am endm ents (CLIA) as qualified to perf orm high-complexity testing. Available Chrom ogen – All m ark ers have been validated with 3,3’-Diam inobenzidine T etrah ydrochloride (DAB) which results in a bro wn/black precipitate. DAB is the routine chrom ogen. In addition, som e m ark ers have also been validated using the Fast Red (RED), which results in a re d precipitate. If available wit h both chrom ogens and one is not selected, the def ault will be t he DAB chrom ogen. Antibod y Common Applications Staining Characteristics/Cla ssification If Other Than IVD Actin (muscle specific) Smooth, skeletal & cardiac muscle Cytoplasmic Actin (smooth muscle) Smooth muscle and myoepithelial cells Cytoplasmic and membrane Adrenocorticotropin (ACTH) Pituitary neoplasms Cytoplasmic Alpha-1-Fetoprotein (AFP) Hepatoma, germ cell tumors Cytoplasmic ALK Protein ALK1 positive lymphomas Cytoplasmic and/or nuclear Alpha-1-Antitrypsin Demonstrates A-1-AT in liver Cytoplasmic (A-1-AT) Bcl-2 Oncoprotein Follicular lymphoma and soft tissue Cytoplasmic tumors Bcl-6 Follicular lymphoma Nuclear Ber-EP4, Epithelial Antigen Adenocarcinoma vs. -
Immunohistochemistry Immunohistochemistry
!"#$%&'"()(*+$(,$-#)&.(-&/$ 0--1.("23'(4"#-23'5+$$ 65.&17$7#$)&$8(14"&57295#$:;<$=";$ >+(.<$85&.4#$ Immunohistochemistry Immunohistochemistry It’s all about chosing the adapted anbody(ies) Immunohistochemistry It’s all about chosing the adapted anbody(ies) for the selected task(s) AnAbodies • « Melanocyc » anbodies – S100 – MelanA – HMB45 – PNL2 – MiTF Specificity vs Sensivity – SOX10 – … • « Anomaly-specific » anbodies – BRAF V600E – NRAS Q61R – ALK – ROS1 – NTRK1 – MET – P16 – BAP1 – PDL1 – … • Other anbodies – D2-40 – CD68 HMB45 – … AnAbodies • « Melanocyc » anbodies – S100 – MelanA – HMB45 – PNL2 – MiTF – SOX10 – … • « Anomaly-specific » anbodies – BRAF V600E – NRAS Q61R – ALK – ROS1 – NTRK1 – MET – P16 – BAP1 – PDL1 – … • Other anbodies – D2-40 – CD68 NTRK1 – … AnAbodies • « Melanocyc » anbodies – S100 – MelanA – HMB45 – PNL2 – MiTF – SOX10 – … • « Anomaly-specific » anbodies – BRAF V600E – NRAS Q61R – ALK – ROS1 – NTRK1 – MET – P16 – BAP1 – PDL1 – … • Other anbodies (DD mainly) – D2-40 – CD68 – … Why perform IHC? • Confirm melanocyc lineage • Visualize the melanocytes • Benign vs Malignant • Molecular characterizaon A. Confirm melanocyc lineage • Unpigmented dermal or ulcerated tumor (No recognizable junconal melanocytes) • Unpigmented metastases • Desmoplasc melanoma A1. Confirm melanocyc lineage Unpigmented dermal or ulcerated tumor M, 65 Back 6Ha$[(.T5-$-#)&.(4+A4$)2.#&*#$ b.%2*-#.'#7$7#5-&)$(5$1)4#5&'#7$'1-(5$$ b.%2*-#.'#7$.#3'$(,$#%2'"#)2(27$4#))3$ A1. Confirm melanocyc lineage Unpigmented dermal or ulcerated tumor S100 Protein 6Ha$[(.T5-$-#)&.(4+A4$)2.#&*#$ -
Pathology and Pathogenesis of SARS-Cov-2 Associated with Fatal Coronavirus Disease, United States Roosecelis B
Pathology and Pathogenesis of SARS-CoV-2 Associated with Fatal Coronavirus Disease, United States Roosecelis B. Martines,1 Jana M. Ritter,1 Eduard Matkovic, Joy Gary, Brigid C. Bollweg, Hannah Bullock, Cynthia S. Goldsmith, Luciana Silva-Flannery, Josilene N. Seixas, Sarah Reagan-Steiner, Timothy Uyeki, Amy Denison, Julu Bhatnagar, Wun-Ju Shieh, Sherif R. Zaki; COVID-19 Pathology Working Group2 An ongoing pandemic of coronavirus disease (CO- United States; since then, all 50 US states, District of VID-19) is caused by infection with severe acute respi- Columbia, Guam, Puerto Rico, Northern Mariana Is- ratory syndrome coronavirus 2 (SARS-CoV-2). Charac- lands, and US Virgin Islands have confirmed cases of terization of the histopathology and cellular localization COVID-19 (2–4). of SARS-CoV-2 in the tissues of patients with fatal CO- Coronaviruses are enveloped, positive-strand- VID-19 is critical to further understand its pathogenesis ed RNA viruses that infect many animals; human- and transmission and for public health prevention mea- adapted viruses likely are introduced through zoo- sures. We report clinicopathologic, immunohistochemi- notic transmission from animal reservoirs (5,6). Most cal, and electron microscopic findings in tissues from known human coronaviruses are associated with 8 fatal laboratory-confirmed cases of SARS-CoV-2 in- mild upper respiratory illness. SARS-CoV-2 belongs fection in the United States. All cases except 1 were in to the group of betacoronaviruses that includes severe residents of long-term care facilities. In these patients, SARS-CoV-2 infected epithelium of the upper and lower acute respiratory syndrome coronavirus (SARS-CoV) airways with diffuse alveolar damage as the predominant and Middle East respiratory syndrome coronavirus pulmonary pathology. -
Immunohistochemistry (Ihc), Special Stains (Ss), & Cish Requisition
2119 E. 93rd / L15 Cleveland, OH 44106 IMMUNOHISTOCHEMISTRY (IHC), 216.444.5755 or 800.628.6816 SPECIAL STAINS (SS), & CISH REQUISITION <<FORM_ID>> PATIENT INFORMATION (PLEASE PRINT IN BLACK INK) CLIENT INFORMATION ___________________________________________________________________________________________ Last Name First MI ___________________________________________________________________________________________ Address Birth Date Sex ¨ M ¨ F ___________________________________________________________________________________________ City SS # ___________________________________________________________________________________________ State Zip Home Phone ___________________________________________________________________________________________ Hospital/Physician Office atientP ID # Accession # ORDERING PHYSICIAN CONTACT MEDICAL NECESSITY NOTICE: When ordering tests for which Medicare reimbursement will be sought, physicians (or other individuals authorized by law to order tests) should only order tests that are medically necessary for the diagnosis or treatment of a patient, rather than for screening purposes. __________________________________________________________ Physician Name INSURANCE BILLING INFORMATION (PLEASE ATTACH CARD OR PRINT IN BLACK INK) BILL TO: ¨ Client/Institution ¨ Medicare ¨ Insurance (Complete insurance information below) ¨ Patient __________________________________________________________ PATIENT STATUS: ¨ Inpatient ¨ Outpatient ¨ Non-Hospital Patient Hospital discharge date: ______/______/______ Physician NPI# -
APPLICATION NOTE Anti-Fluortag Antibodies Enable
APPLICATION NOTE Anti-FluorTag Antibodies Enable Immunohistochemistry with Flow Cytometry Antibodies Yves Konigshofer, PhD, Alice Ku, Farol L. Tomson, PhD and Seth B. Harkins, PhD INTRODUCTION Figure 1 compares the sensitivity of fluorescence microscopy to immunohistochemistry. Sections of a mouse spleen were The KPL anti-FluorTag antibodies are a set of goat-derived first stained for dendritic cells using different concentrations polyclonal antibodies that can be used to detect Fluorescein of a FITC-labeled anti-CD11c antibody and then imaged with (FITC)-, Phycoerythrin (PE)-, Allophycocyanin (APC)- and a fluorescence microscope. Afterwards, HRP-labeled anti-FITC Peridinin Chlorophyll (PerCP)-labeled antibodies. They are and TrueBlue™ substrate were used to detect the FITC-labeled available unconjugated, as Horseradish Peroxidase (HRP) antibodies. At 93 ng/ml, background signals from autofluo- conjugates and as High Potency Alkaline Phosphatase rescence began to exceed the specific signal and at 20 ng/ml, (ReserveAP™) conjugates. FITC-, PE-, APC- and PerCP- very little FITC fluorescence was visible above background. labeled antibodies are used in flow cytometry. These fluores- However, the dendritic cells could still be detected with the cent tags are chosen due to their brightness and compatibility anti-FITC antibody in conjunction with TrueBlue peroxidase with lasers commonly found on flow cytometers. While flow stain. cytometry is very effective at determining what cells express a given protein at a given level, it provides no information about where those cells are located in relation to one another. For this, microscopy-based immunohistochemistry (IHC) tech- niques are frequently required. Ideally, this should not require the purchase and optimization of an entirely new set of pri- mary antibodies. -
Overview of Pathology and Its Related Disciplines - Soheir Mahmoud Mahfouz
MEDICAL SCIENCES – Vol.I -Overview of Pathology and its Related Disciplines - Soheir Mahmoud Mahfouz OVERVIEW OF PATHOLOGY AND ITS RELATED DISCIPLINES Soheir Mahmoud Mahfouz Cairo University, Kasr El Ainy Hospital, Egypt Keywords: Pathology, Pathology disciplines, Pathology techniques, Ancillary diagnostic methods, General Pathology, Special Pathology Contents 1. Introduction 1.1 Pathology coverage 1.1.1 Etiology and Pathogenesis of a Disease 1.1.2 Manifestations of Disease (Lesions) 1.1.3 Phases Of A Disease Process (Course) 1.2 Physician’s approach to patient 1.3 Types of pathologists and affiliated specialties 1.4 Role of pathologist 2. Pathology and its related disciplines 2.1 Cytology 2.1.1 Cytology Samples 2.1.2 Technical Aspects 2.1.3 Examination of Sample and Diagnosis 3. Pathology techniques and ancillary diagnostic methods 3.1 Macroscopic pathology 3.2 Light Microscopy 3.3 Polarizing light microscopy 3.4 Electron microscopy (EM) 3.5 Confocal Microscopy 3.6 Frozen section 3.7 Cyto/histochemistry 3.8 Immunocyto/histochemical methods 3.9 Molecular and genetic methods of diagnosis 3.10 Quantitative methods 4. Types of tests used in pathology 4.1 DiagnosticUNESCO tests – EOLSS 4.2 Quantitative tests 4.3 Prognostic tests 5. The scope of SAMPLEpathology & its main divisions CHAPTERS 6. Conclusions Glossary Bibliography Biographical sketch Summary Pathology is the science of disease. It deals with deviations from normal body function and ©Encyclopedia of Life Support Systems (EOLSS) MEDICAL SCIENCES – Vol.I -Overview of Pathology and its Related Disciplines - Soheir Mahmoud Mahfouz structure. Many disciplines are involved in the study of disease, as it is necessary to understand the complex causes and effects of various disorders that affect the organs and body as a whole. -
Immunohistochemistry in the Diagnosis of Cutaneous Infections
Immunohistochemistry in the diagnosis of cutaneous infections Ana María Molina Ruiz Thesis for the fulfillment of the PhD degree in Medical Science UNIVERSIDAD AUTÓNOMA DE MADRID FACULTAD DE MEDICINA Department of Internal Medicine TESIS DOCTORAL Immunohistochemistry in the Diagnosis of Cutaneous Viral and Bacterial Infections AUTHOR: Ana María Molina Ruiz DIRECTOR: Luis Requena Caballero Department of Dermatology, Fundación Jiménez Díaz, Department of Internal Medicine, Universidad Autónoma, Madrid Memoria para optar al grado de Doctor en Medicina con Mención Internacional al Título. Tesis presentada como compendio de publicaciones. UNIVERSIDAD AUTÓNOMA DE MADRID FACULTAD DE MEDICINA Departamento de Medicina Interna D. Luis Requena Caballero, Catedrático de Dermatología del Departamento de Medicina de la Universidad Autónoma de Madrid. CERTIFICA: Que Dña. Ana María Molina Ruiz ha realizado bajo mi dirección el trabajo “Immunohistochemistry in the Diagnosis of Cutaneous Viral and Bacterial Infections“ que a mi juicio reúne las condiciones para optar al Grado de Doctor. Para que así conste, firmo el presente certificado en Madrid a 3 de septiembre del año dos mil catorce. Vº Bº Director de la Tesis Doctoral Profesor Luis Requena Caballero Catedrático de Dermatología Departamento de Medicina, Facultad de Medicina Universidad Autónoma de Madrid DERMATOPATHOLOGIE FRIEDRICHSHAFEN BODENSEE Dermatopathologische Gemeinschaftspraxis PD Dr. med. Heinz Kutzner, Dermatologe Postfach 16 46, 88006 Friedrichshafen Dr. med. Arno Rütten, Dermatologe Prof. Dr. med. Thomas Mentzel, Pathologe Dr. med. Markus Hantschke, Dermatologe Dr. med. Bruno Paredes, Dermatologe, Pathologe Dr. med. Leo Schärer, Dermatologe Postfach 16 46, 88006 Friedrichshafen Siemensstr. 6/1, 88048 Friedrichshafen May 28, 2014 To Whom it May Concern Gentlemen, I have read Dr. -
Applications of Flow Cytometry and Immunohistochemistry to Diagnostic Hematopathology
Review Article Applications of Flow Cytometry and Immunohistochemistry to Diagnostic Hematopathology Cherie H. Dunphy, MD c Objective.ÐDiagnostic hematopathology depends on selected studies to ensure reliable comparison of reported the applications of ¯ow cytometric immunophenotyping data. and immunohistochemical immunophenotyping combined Data Synthesis.ÐFlow cytometric immunophenotyping with the cytomorphology and histologic features of each offers the sensitive detection of antigens for which anti- case. Select cases may require additional ancillary cyto- bodies may not be available for paraf®n immunohisto- genetic and molecular studies for diagnosis. The purpose chemical immunophenotyping. However, paraf®n immu- of this review is to focus on the applications of ¯ow cy- nohistochemical immunophenotyping offers preservation tometric and immunohistochemical immunophenotyping of architecture and evaluation of expression of some pro- of paraf®n-embedded tissue to diagnostic hematopatholo- teins, which may not be available by ¯ow cytometric im- gy. Advantages and disadvantages of these techniques are munophenotyping. These techniques should be used as examined. complimentary tools in diagnostic hematopathology. Data Sources.ÐThe literature is extensively reviewed Conclusions.ÐThere are extensive applications of ¯ow (PubMed 1985±2003) with an emphasis on the most recent cytometric and immunohistochemical immunophenotyp- applications and those that are most useful clinically, both ing to diagnostic hematopathology. As cytogenetic and mo- diagnostically and prognostically. lecular ®ndings evolve in diagnostic hematopathology, Study Selection.ÐStudies were selected based on statis- there may be additional applications of ¯ow cytometric tically signi®cant results in large studies with reported ad- and immunohistochemical immunophenotyping to this equate clinical follow-up. ®eld of pathology. Data Extraction.ÐThe methodology was reviewed in the (Arch Pathol Lab Med. -
Immunohistochemistry Stain Offerings
immunohistochemistry stain offerings TRUSTED PATHOLOGISTS. INVALUABLE ANSWERS.™ MARCHMAY 20172021 www.aruplab.com/ap-ihcaruplab.com/ap-ihc InformationInformation in this brochurein this brochure is current is current as of as May of March 2021. 2017. All content All content is subject is subject to tochange. change. Please contactPlease ARUPcontact ClientARUP Services Client Services at 800-522-2787 at (800) 522-2787 with any with questions any questions or concerns.or concerns. ARUP LABORATORIES As a nonprofit, academic institution of the University of Utah and its Department We believe in of Pathology, ARUP believes in collaborating, sharing and contributing to laboratory science in ways that benefit our clients and their patients. collaborating, Our test menu is one of the broadest in the industry, encompassing more sharing and than 3,000 tests, including highly specialized and esoteric assays. We offer comprehensive testing in the areas of genetics, molecular oncology, pediatrics, contributing pain management, and more. to laboratory ARUP’s clients include many of the nation’s university teaching hospitals and children’s hospitals, as well as multihospital groups, major commercial science in ways laboratories, and group purchasing organizations. We believe that healthcare should be delivered as close to the patient as possible, which is why we support that provide our clients’ efforts to be the principal healthcare provider in the communities they serve by offering highly complex assays and accompanying consultative support. the best value Offering analytics, consulting, and decision support services, ARUP provides for the patient. clients with the utilization management tools necessary to prosper in this time of value-based care. -
Chapter 2, Transmission and Pathogenesis of Tuberculosis (TB)
Chapter 2 Transmission and Pathogenesis of Tuberculosis Table of Contents Chapter Objectives . 19 Introduction . 21 Transmission of TB . 21 Pathogenesis of TB . 26 Drug-Resistant TB (MDR and XDR) . 35 TB Classification System . 39 Chapter Summary . 41 References . 43 Chapter Objectives After working through this chapter, you should be able to • Identify ways in which tuberculosis (TB) is spread; • Describe the pathogenesis of TB; • Identify conditions that increase the risk of TB infection progressing to TB disease; • Define drug resistance; and • Describe the TB classification system. Chapter 2: Transmission and Pathogenesis of Tuberculosis 19 Introduction TB is an airborne disease caused by the bacterium Mycobacterium tuberculosis (M. tuberculosis) (Figure 2.1). M. tuberculosis and seven very closely related mycobacterial species (M. bovis, M. africanum, M. microti, M. caprae, M. pinnipedii, M. canetti and M. mungi) together comprise what is known as the M. tuberculosis complex. Most, but not all, of these species have been found to cause disease in humans. In the United States, the majority of TB cases are caused by M. tuberculosis. M. tuberculosis organisms are also called tubercle bacilli. Figure 2.1 Mycobacterium tuberculosis Transmission of TB M. tuberculosis is carried in airborne particles, called droplet nuclei, of 1– 5 microns in diameter. Infectious droplet nuclei are generated when persons who have pulmonary or laryngeal TB disease cough, sneeze, shout, or sing. Depending on the environment, these tiny particles can remain suspended in the air for several hours. M. tuberculosis is transmitted through the air, not by surface contact. Transmission occurs when a person inhales droplet nuclei containing M. -
CANCER EPIDEMIOLOGY and PATHOGENESIS (EPID 770) SPRING 2016, T/Th 9:30-10:45 Melissa Troester, [email protected]
CANCER EPIDEMIOLOGY AND PATHOGENESIS (EPID 770) SPRING 2016, T/Th 9:30-10:45 Melissa Troester, [email protected] Course objective: The objective of this course is to provide a framework for understanding and critically evaluating epidemiologic literature. The course will cover cancer statistics, major risk factors for cancer, mechanisms of carcinogenesis, biomarkers in cancer research, and current controversies in cancer research. Students will gain background knowledge of cancer biology and epidemiology needed to interpret and critique cancer prevention research and will develop and practice skills in critiquing literature, resolving discrepancies between studies, and identifying knowledge gaps. Readings: Assigned readings and study questions will be provided through Sakai. There is no assigned textbook for the course, but these texts may be useful as references: Nasca and Pastides. Fundamentals of Cancer Epidemiology (2nd Ed). Jones and Bartlett, Sudbury, MA 2008. Schottenfeld and Fraumeni. Cancer Epidemiology and Prevention, (3rd Ed). Oxford, New York, NY 2006. Course requirements: Class participation (20%): Each class period will include a discussion of assigned readings and study questions. Students are required to complete reading and/or homework assignments prior to class. Several class sessions are set up as student-led discussion. Peer evaluation sheets will be collected for panel discussants, and both the evaluator and the discussant will receive a grade based on these evaluations. Literature critique (20% X 2): Two peer-review critiques will be written during the semester on assigned articles. The articles will be taken from the current literature and the written critique should resemble a critique that would be written as a reviewer for a scientific journal.