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Vaccination with Recombinant Aspartic Hemoglobinase Reduces Parasitic Load and Blood Loss After Hookworm Infection in Dogs
Open access, freely available online PLoS MEDICINE Vaccination with Recombinant Aspartic Hemoglobinase Reduces Parasite Load and Blood Loss after Hookworm Infection in Dogs Alex Loukas1*, Jeffrey M. Bethony2, Susana Mendez2, Ricardo T. Fujiwara2, Gaddam Narsa Goud2, Najju Ranjit1, Bin Zhan2, Karen Jones2, Maria Elena Bottazzi2, Peter J. Hotez2* 1 Division of Infectious Diseases and Immunology, Queensland Institute of Medical Research, Brisbane, Queensland, Australia, 2 Department of Microbiology and Tropical Medicine, The George Washington University Medical Center, Washington, District of Columbia, United States of America Competing Interests: The authors have declared that no competing ABSTRACT interests exist. Background Author Contributions: AL, JMB, MEB, and PJH designed the study. Hookworms infect 730 million people in developing countries where they are a leading cause AL, RTF, GNG, NR, BZ, performed of intestinal blood loss and iron-deficiency anemia. At the site of attachment to the host, adult experiments. AL, PJH, JMB, SM, and hookworms ingest blood and lyse the erythrocytes to release hemoglobin. The parasites KJ analyzed the data. AL, PJH, JMB, and SM contributed to writing the subsequently digest hemoglobin in their intestines using a cascade of proteolysis that begins paper. with the Ancylostoma caninum aspartic protease 1, APR-1. Academic Editor: Maria Yazdanbakhsh, Leiden University Methods and Findings Medical Center, the Netherlands Citation: Loukas A, Bethony JM, We show that vaccination of dogs with recombinant Ac-APR-1 induced antibody and cellular Mendez S, Fujiwara RT, Goud GN, et responses and resulted in significantly reduced hookworm burdens (p ¼ 0.056) and fecal egg al. (2005) Vaccination with counts (p ¼ 0.018) in vaccinated dogs compared to control dogs after challenge with infective recombinant aspartic hemoglobinase reduces parasite larvae of A. -
Independent Monitoring Board of the Global Polio Eradication Initiative Report
Independent Monitoring Board of the Global Polio Eradication Initiative Report July 2011 Independent This second report follows our third meeting, held in London on 30 June and 1 July 2011. Monitoring Board of the At present the needs are: Global Polio • To concisely understand the global situation Eradication Initiative • To maintain clear and energetic focus in each country with ongoing transmission July 2011 • To see the wood for the trees in identifying and dealing with the programme’s key risks • To find innovative solutions that break through entrenched problems • To surface fundamental problems that need urgent attention We are grateful to the many partners of the Global Polio Eradication Initiative who have provided us with information, logistical support, and valuable insights. We are grateful for their help, and commend their commitment. Our role remains to speak with a clear, objective voice that is independent of any of these partners. We each sit on this board in a personal capacity. We remain resolutely independent, and will continue to present our frank view without fear or favour. Sir Liam Donaldson (Chair) Dr Mushtaque Chowdhury* Former Chief Medical Officer, England Associate Director, Rockefeller Foundation Dr Nasr El Sayed Dr Ciro de Quadros Assistant Minister of Health, Egypt Executive Vice President, Sabin Vaccine Institute Dr Jeffrey Koplan Dr Sigrun Mogedal Vice President for Global Health Special Advisor, Norweigan Knowledge Centre Director, Emory Global Health Institute for the Health Services Professor Ruth Nduati Dr Arvind Singhal Chairperson, Department of Paediatrics and Child Health Marston Endowed Professor of Communication University of Nairobi University of Texas at El Paso Professor Michael Toole Head, Centre for International Health *Dr Chowdhury was unable to participate in the meeting but Burnet Institute, Melbourne endorses this report The Independent Monitoring Board was convened at the request of the World Health Assembly to monitor and guide the progress of the Global Polio Eradication Initiative’s 2010-12 Strategic Plan. -
THE ERADICATION of POLIOMYELITIS (Fhe Albert V.• Sabin Lecture)
THE ERADICATIONOF POLIOMYELITIS (fhe Albert V.•Sabin Lecture) by Donald Henderson, M.D., M.P.H. University Distinguished Service Professor The JohnsHopkins University Baltimore, Maryland 21205 Cirode Quadros, M.D., M.P.H. Regional Advisor Expanded Programme on lmmunii.ation Pan American Health Organization 525 23rd Street, N. W. Washington, D.C. 20037 Introduction The understanding and ultimate conquest of poliomyelitis was Albert Sabin's life long preoccupation, beginning with his earliest work in 1931. (Sabin and Olitsky, 1936; Sabin, 1965) The magnitude of that effort was aptly summarized by Paul in his landmark history of polio: "No man has ever contributed so much effective information - and so continuously over so many years - to so many aspects of poliomyelitis." (Paul, 1971) Thus, appropriately, this inaugural Sabin lecture deals with poliomyelitis and its eradication. Polio Vaccine Development and Its Introduction In the quest for polio control and ultimately eradication, several landmarks deserve special mention. At the outset, progress was contingent on the development of a vaccine and the production of a vaccine, in turn, necessitated the discovery of new methods to grow large quantities of virus. The breakthrough occurred in 1969 when Enders and his colleagues showed that large quantities of poliovirus could be grown in a variety of human cell tissue cultures and that the virus could be quantitatively assayed by its cytopathic effect. (Enders, Weller and Robbins, 1969) Preparation of an inactivated vaccine was, in principle, a comparatively straightforward process. In brief, large quantities of virus were grown. then purified, inactivated with formalin and bottled. Assurance that the virus had been inactivated could be demonstrated by growth in tissue. -
TESTIMONY Peter J. Hotez MD, Phd President, Sabin Vaccine Institute
TESTIMONY Peter J. Hotez MD, PhD President, Sabin Vaccine Institute “The Growing Threat of Cholera and Other Diseases in the Middle East” Subcommittee on Africa, Global Health, Global Human Rights, and International Organizations Committee on Foreign Affairs United States House of Representatives March 2, 2016 Mr. Chairman and Members of the Subcommittee, thank you for the opportunity to speak with you today. I am Peter Hotez, a biomedical scientist and pediatrician. I am the dean of the National School of Tropical Medicine at Baylor College of Medicine and also the Texas Children’s Hospital Endowed Chair in Tropical Pediatrics based at the Texas Medical Center in Houston. I am also past president of the American Society of Tropical Medicine and Hygiene, and currently serve as President of the Sabin Vaccine Institute, a non-profit which develops vaccines for neglected tropical diseases (NTDs) through a product development partnership (PDP) model. This year I am also serving as US Science Envoy for the State Department and White House Office of Science and Technology Policy focusing on the urgency to develop vaccines for diseases that are emerging in the Middle East and North Africa due to the breakdowns in health systems in the ISIS occupied conflict zones in Syria, Iraq, Libya, and also Yemen. In my submitted written testimony I highlighted some of the successes in US global health policy, many of which can be attributed to the hard work of this Subcommittee working hand in glove with two presidential administrations since 2000. I cite evidence from the Global Burden of Disease Study (GBD) that brings together hundreds of scientists - I am also a part of this - who are measuring the impact of large scale global health programs. -
Pichia Pastoris (Komagataella Phaffii) As a Cost-Effective Tool for Vaccine
bioengineering Review Pichia pastoris (Komagataella phaffii) as a Cost-Effective Tool for Vaccine Production for Low- and Middle-Income Countries (LMICs) Salomé de Sá Magalhães and Eli Keshavarz-Moore * Department of Biochemical Engineering, University College London, Gower Street, London WC1E 6BT, UK; [email protected] * Correspondence: [email protected] Abstract: Vaccination is of paramount importance to global health. With the advent of the more recent pandemics, the urgency to expand the range has become even more evident. However, the potential limited availability and affordability of vaccines to resource low- and middle-income countries has created a need for solutions that will ensure cost-effective vaccine production methods for these countries. Pichia pastoris (P. pastoris) (also known as Komagataella phaffii) is one of the most promising candidates for expression of heterologous proteins in vaccines development. It combines the speed and ease of highly efficient prokaryotic platforms with some key capabilities of mammalian systems, potentially reducing manufacturing costs. This review will examine the latest developments in P. pastoris from cell engineering and design to industrial production systems with focus on vaccine development and with reference to specific key case studies. Keywords: vaccines; LMICs; expression platforms; P. pastoris (Komagataella phaffii) Citation: de Sá Magalhães, S.; Keshavarz-Moore, E. Pichia pastoris (Komagataella phaffii) as a Cost-Effective 1. Introduction Tool for Vaccine Production for Low- and Middle-Income Countries (LMICs). Infectious diseases have a significant global economic and societal impact. As a result, Bioengineering 2021, 8, 119. https:// during the last two centuries, we have witnessed the remarkable success of vaccination doi.org/10.3390/bioengineering8090119 reducing the burden of infectious diseases [1]. -
Sabin in the News Recent Scientific Articles Sabin Vaccine Institute
Home About Us News & Resources Support Sabin Sabin in the News October 2011 The Sabin Report | Volume 13 Issue 2 New York Times article featuring Dr. Peter Hotez's new study on increased Sabin Vaccine Institute Establishes a Houston prevalence of NTDs in Europe. Office Drs. Ciro de Quadros and In September 2011, the Zulfiqar Bhutta highlight Sabin Vaccine Institute the dire need for a dengue established offices in vaccine in an opinion Houston, Texas in the piece for GlobalPost. heart of the city's Texas Medical Center (TMC). The In an interview on Voice of new facilities will house the America Dr. Peter Hotez Sabin Vaccine Institute & focused on NTDs in Sub- Texas Children's Hospital Saharan Africa. Center for Vaccine Development, which will be An article by Dr. Neeraj operated in partnership Mistry was featured in a with Baylor College of special supplemental Medicine Department of section of the USA today, Pediatrics. Sabin Dr. Hotez and team at Sabin's new Houston facility titled "Neglected Diseases President, Dr. Peter J. in Developing Nations". Hotez will direct the new center. In an op-ed for the Houston Chronicle, Dr. The new space includes offices and laboratories through which the Peter Hotez writes about Sabin Vaccine Institute Product Development Partnership (PDP) will the establishment of the advance and strengthen its collaborative work in the field of vaccine new School of Tropical biotechnology. The change is the result of a year-long plan to expand Medicine at Baylor College the scope and depth of the Sabin PDP's partnership and to enhance of Medicine. -
Poliomyelitis in the Lone Star State
POLIOMYELITIS IN THE LONE STAR STATE: A BRIEF EXAMINATION IN RURAL AND URBAN COMMUNITIES THESIS Presented to the Graduate Council of Texas State University in Partial Fulfillment of the Requirements For the Degree Master of Arts By Jason C. Lee San Marcos, Texas December, 2005 Insert signature page here ii COPYRIGHT By Jason Chu Lee 2005 iii ACKNOWLEDGEMENTS It leaves me in a stupor to contemplate all those I have to thank for aiding me in this effort. If I leave anybody out, please accept my most humble apologies, as the list is long. I will be the first to admit that this work is flawed, despite the best efforts of my committee to save me from myself. Had I utilized them more, this piece would only be improved. I had never undertaken a project of this scope before and though I believe I have accomplished much, the experience has been humbling. Never again will I utter the phrase, “just a thesis.” My biggest thanks go out to Dr. Mary Brennan, my committee chair and mentor. Without her guidance I most certainly would have needed to take comprehensive finals to graduate. She helped me salvage weeks of research that I thought had no discernable use. But Dr. Brennan, despite her very, very busy schedule with the department and her family, still found the time to help me find my thesis in all the data. She is well loved in the department for obvious reasons, as she has a gift for being firm and professional while remaining compassionate. Dr. James Wilson and Dr. -
Artículos Científicos
Editor: NOEL GONZÁLEZ GOTERA Número 086 Diseño: Lic. Roberto Chávez y Liuder Machado. Semana 010613 - 070613 Foto: Lic. Belkis Romeu e Instituto Finlay La Habana, Cuba. ARTÍCULOS CIENTÍFICOS Publicaciones incluidas en PubMED durante el período comprendido entre el el 1 y el 7 de junio de 2013. Con “vaccin*” en título: 131 artículos recuperados. Vacunas Neumococo (Streptococcus pneumoniae) 98. Is there an authentic increased risk of pneumococcal pneumonia among young mothers whose children were fully vaccinated with PCV7? The role of methodological shortcomings. Castiglia P, Piana A, Sotgiu G. Vaccine. 2013 May 29. doi:pii: S0264-410X(13)00655-5. 10.1016/j.vaccine.2013.05.055. [Epub ahead of print] No abstract available. PMID: 23727001 [PubMed - as supplied by publisher] Related citations Select item 23726847 121. Clonal Expansion within Pneumococcal Serotype 6C after Use of Seven-Valent Vaccine. Loman NJ, Gladstone RA, Constantinidou C, Tocheva AS, Jefferies JM, Faust SN, O'Connor L, Chan J, Pallen MJ, Clarke SC. PLoS One. 2013 May 28;8(5):e64731. doi: 10.1371/journal.pone.0064731. Print 2013. PMID: 23724086 [PubMed - in process] Free Article Related citations Select item 23724021 1 Vacuna Tosferina (Bordetella pertussis) 108. [Pertussis in fully vaccinated infants and children. Are new vaccination strategies required?] Moraga-Llop FA, Mendoza-Palomar N, Muntaner-Alonso A, Codina-Grau G, Fàbregas-Martori A, Campins-Martí M. Enferm Infecc Microbiol Clin. 2013 May 29. doi:pii: S0213-005X(13)00124-9. 10.1016/j.eimc.2013.04.007. [Epub ahead of print] Spanish. PMID: 23725786 [PubMed - as supplied by publisher] Related citations Select item 23725785 125. -
Dr Sabin's Legacy to the World Jaime Sepulveda
World Health • 46th Year, No . 3, Moy-June 1993 IS Dr Sabin's legacy to the world Jaime Sepulveda oliomyelitis has been eradicated Poliomyelitis acquired epidemic from the Americas and other proportions in the Americas at the end Pareas, and is expected to be of the last century, mainly in the most eliminated from the world by 1995. developed regions. In Mexico, the first This outstanding achievement has epidemic outbreaks started in the been made possible thanks to the 1940s and caused many victims. The availability of an excellent vaccine oral poliovaccine was made available coupled with successful vaccination in Mexico in the early 1960s. programmes. Few actions in public Coverage was low then, and mainly health have become so deservedly concentrated among well-to-do prestigious as the vaccination children. In the 1970s, a new national campatgns. programme reached much greater The first major achievement of the numbers of children and poliomyelitis immunization effort was the cases began to drop. eradication from the world of However, it was not until1985 that smallpox in the late 1970s. But the a new polio immunization initiative success with smallpox is only the took place, with the goal of reaching all children, regardless of social status Or Albert Bruce Sobin, who perfected the first most visible component of all the viable live vaccine against polio. many benefits conferred by or geographic location. This new immunization programmes strategy, focusing on "National worldwide. Not only have they Vaccination Days", was originally brought about the survival of children proposed by Professor Albert Sabin, who would otherwise have died; they the US scientist who developed the have greatly enhanced the quality of oral poliomyelitis vaccine. -
Renato Dulbecco
BIOLOGIE ET HISTOIRE Renato Dulbecco Renato Dulbecco : de la virologie à la cancérologie F.N.R. RENAUD 1 résumé Né en Italie, Renato Dulbecco fait de brillantes études médicales mais est plus intéressé par la recherche en biologie que par la pratique médicale. Accueilli par Giuseppe Levi, il apprend l’histologie et la culture cellulaire avant de rejoindre le laboratoire de S.E. Luria puis celui de M. Delbrück pour travailler sur les systèmes bactéries-bactériophages puis sur la relation cellules-virus. Il met au point la méthode des plages de lyse virales sur des cultures cellulaires. Il est aussi à l’origine de la virologie tumorale moléculaire. D. Baltimore, HM Temin et lui-même sont récompensés par le prix Nobel de médecine et physiologie en 1975 pour leurs travaux sur l'interaction entre les virus tumoraux et le matériel génétique du matériel cellulaire. Très tourné vers les aspects pratiques et expérimentaux de la recherche, il est resté le plus long - temps possible à la paillasse et a initié un très grand nombre de jeunes chercheurs. mots-clés : culture cellulaire, virologie tumorale, plages de lyse, bactériophages. I. - LA JEUNESSE DE RENATO DULBECCO C'est à Catanzaro, capitale régionale de la Calabre en Italie, que naît Renato Dulbecco le 22 février 1914. Sa mère est Calabraise et son père Ligurien. Il ne reste que très peu de temps dans le sud de l’Italie, car son père est mobilisé et sa famille doit déménager dans le nord à Cuneo, puis à Turin. À la fin de la guerre, la famille Dulbeco s'ins - talle à Imperia en Ligurie. -
The March of Dimes and Polio: Lessons in Vaccine Advocacy for Health Educators
Feature Article The March of Dimes and Polio: Lessons in Vaccine Advocacy for Health Educators Dawn Larsen ABSTRACT The polio vaccine became available in 1955, due almost entirely to the efforts of the March of Dimes. In 1921, Franklin Roosevelt gave a public face to polio and mounted a campaign to prevent it, establishing the National Foundation for Infantile Paralysis in 1938. During the Depression, U.S. citizens were asked to contribute one dime. Entertainer Eddie Cantor suggested the name the March of Dimes, paraphrasing the popular newsreel “The March of Time.” Jonas Salk advocated a killed-virus vaccine while Albert Sabin proposed a live-virus vaccine. Both competed for both recognition and funding from the March of Dimes. In 1955 Salk’s vaccine was adopted, nationwide vaccination programs were implemented, and polio rates dropped by 80 percent. In 1961, Sabin’s vaccine, endorsed by the American Medical Association, became the vaccine of choice. The World Health Assembly advocated polio eradication by the year 2000. By 2004 eradication efforts were threatened by allegations linking vaccines to chronic diseases. Immunization dropped and polio resurfaced in the U.S., Australia, Africa and Russia. Research linking vaccines to chronic disease was dis- credited, but vaccine opponents remain active. Health educators are well positioned to mitigate damage caused by the anti-vaccine movement and address barriers to immunization efforts. Larsen D. The March of Dimes and polio: lessons in vaccine advocacy for health educators. Am J Health Educ. 2012;43(1):47-54. Submitted May 30, 2011. Accepted July 9, 2011. In 2008, The March of Dimes cel- prenatal health promotion programs, and of the virus that has been ranked second ebrated its 70th anniversary. -
Book of Essays by Young Scie
Lasker Foundation and Diamonstein-Spielvogel Foundation Publish Book of Essays by Young Scientists Young scientists share personal stories of the legendary biomedical researchers and mentors who inspired their careers (New York City – November 10, 2020) – The Lasker Foundation and the Diamonstein- Spielvogel Foundation today announced the publication of “Inspiration: Young Scientists Reflect” edited by author, and advocate, Barbaralee Diamonstein-Spielvogel. The publication also honors the 75th Anniversary of the Albert and Mary Lasker Foundation, and the 25th Anniversary of the PEN America/Diamonstein-Spielvogel Art of the Essay Award. It includes a foreword, commissioned by the Diamonstein-Spielvogel Foundation, by author, journalist, and M.D., Rivka Galchen, who explores the history of the essay form and its early development by 16th century French humanist and philosopher Michel de Montaigne. It also contains a tribute to the PEN America/Diamonstein-Spielvogel Art of the Essay Award, by PEN America, the organization which stands at the intersection of literature and human rights to protect open expression in the United States and worldwide. The 11 essays in the booklet are the winning submissions to the 2020 Lasker Essay Contest, an annual global competition that engages young scientists and clinicians in discussion about the role of biomedical research in our society today. This year, students and young researchers were asked to describe how a notable scientist had inspired them – through the scientist’s personality, life experiences, and/or through their scientific contributions. The Lasker Foundation received over 300 submissions to the Contest. “These essays reflect the altruism of senior scientists as they guide younger men and women in the field and the power of mentorship in helping trainees define their endeavors in biomedical careers,” said Claire Pomeroy, president of the Lasker Foundation.