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Elevated Prevalence Of Helicobacter Species And Virulence Factors In Opisthorchiasis And Associated Hepatobiliary Disease., Raksawan Deenonpoe, Eimorn Mairiang, Pisaln Mairiang, Chawalit Pairojkul, Yaovalux Chamgramol, Gabriel Rinaldi, Alex Loukas, Paul J. Brindley, Banchob Sripa 2017 George Washington University

Elevated Prevalence Of Helicobacter Species And Virulence Factors In Opisthorchiasis And Associated Hepatobiliary Disease., Raksawan Deenonpoe, Eimorn Mairiang, Pisaln Mairiang, Chawalit Pairojkul, Yaovalux Chamgramol, Gabriel Rinaldi, Alex Loukas, Paul J. Brindley, Banchob Sripa

Microbiology, Immunology, and Tropical Medicine Faculty Publications

Recent reports suggest that Opisthorchis viverrini serves as a reservoir of Helicobacter and implicate Helicobacter in pathogenesis of opisthorchiasis-associated cholangiocarcinoma (CCA). Here, 553 age-sex matched cases and controls, 293 and 260 positive and negative for liver fluke O. viverrini eggs, of residents in Northeastern Thailand were investigated for associations among infection with liver fluke, Helicobacter and hepatobiliary fibrosis. The prevalence of H. pylori infection was higher in O. viverrini-infected than uninfected participants. H. pylori bacterial load correlated positively with intensity of O. viverrini infection, and participants with opisthorchiasis exhibited higher frequency of virulent cagA-positive H. pylori than those free of ...


Review Of: Dangerous Places: Health, Safety, And Archaeology (David A. Poirer & Kenneth L. Feder Eds.), Natalie Duval 2017 University of New Hampshire

Review Of: Dangerous Places: Health, Safety, And Archaeology (David A. Poirer & Kenneth L. Feder Eds.), Natalie Duval

RISK: Health, Safety & Environment

Review of the book: Dangerous Places: Health, Safety, and Archaeology (David A. Poirier& Kenneth L. Feder eds., Bergin & Garvey, Greenwood Publishing Group, Inc. 2001). Introduction, bibliographic references, index. ISBN0-89789-632-7 [264 pp. $65.00. Cloth, 88 Post Road West, P.O. Box5007, Westport, CT 06881-5007.


Advances In Neglected Tropical Disease Vaccines: Developing Relative Potency And Functional Assays For The Na-Gst-1/Alhydrogel Hookworm Vaccine., Jill B. Brelsford, Jordan L Plieskatt, Anna Yakovleva, Amar Jariwala, Brian P Keegan, Jin Peng, Pengjun Xia, Guangzhao Li, Doreen Campbell, Maria Victoria Periago, Rodrigo Correa-Oliveira, Maria Elena Bottazzi, Peter J. Hotez, David Diemert, Jeffrey M. Bethony 2017 George Washington University

Advances In Neglected Tropical Disease Vaccines: Developing Relative Potency And Functional Assays For The Na-Gst-1/Alhydrogel Hookworm Vaccine., Jill B. Brelsford, Jordan L Plieskatt, Anna Yakovleva, Amar Jariwala, Brian P Keegan, Jin Peng, Pengjun Xia, Guangzhao Li, Doreen Campbell, Maria Victoria Periago, Rodrigo Correa-Oliveira, Maria Elena Bottazzi, Peter J. Hotez, David Diemert, Jeffrey M. Bethony

Microbiology, Immunology, and Tropical Medicine Faculty Publications

A new generation of vaccines for the neglected tropical diseases (NTDs) have now advanced into clinical development, with the Na-GST-1/Alhydrogel Hookworm Vaccine already being tested in Phase 1 studies in healthy adults. The current manuscript focuses on the often overlooked critical aspects of NTD vaccine product development, more specifically, vaccine stability testing programs. A key measure of vaccine stability testing is "relative potency" or the immunogenicity of the vaccine during storage. As with most NTD vaccines, the Na-GST-1/Alhydrogel Hookworm Vaccine was not developed by attenuation or inactivation of the pathogen (Necator americanus), so conventional methods for measuring relative ...


Parasite Infection, Carcinogenesis And Human Malignancy., Hoang van Tong, Paul J. Brindley, Christian G Meyer, Thirumalaisamy P Velavan 2017 George Washington University

Parasite Infection, Carcinogenesis And Human Malignancy., Hoang Van Tong, Paul J. Brindley, Christian G Meyer, Thirumalaisamy P Velavan

Microbiology, Immunology, and Tropical Medicine Faculty Publications

Cancer may be induced by many environmental and physiological conditions. Infections with viruses, bacteria and parasites have been recognized for years to be associated with human carcinogenicity. Here we review current concepts of carcinogenicity and its associations with parasitic infections. The helminth diseases schistosomiasis, opisthorchiasis, and clonorchiasis are highly carcinogenic while the protozoan Trypanosoma cruzi, the causing agent of Chagas disease, has a dual role in the development of cancer, including both carcinogenic and anticancer properties. Although malaria per se does not appear to be causative in carcinogenesis, it is strongly associated with the occurrence of endemic Burkitt lymphoma in ...


A Comparison Of The Quality Of Informed Consent For Clinical Trials Of An Experimental Hookworm Vaccine Conducted In Developed And Developing Countries., David J. Diemert, Lucas Lobato, Ashley Styczynski, Maria Zumer, Amanda Soares, Maria Flávia Gazzinelli 2017 George Washington University

A Comparison Of The Quality Of Informed Consent For Clinical Trials Of An Experimental Hookworm Vaccine Conducted In Developed And Developing Countries., David J. Diemert, Lucas Lobato, Ashley Styczynski, Maria Zumer, Amanda Soares, Maria Flávia Gazzinelli

Microbiology, Immunology, and Tropical Medicine Faculty Publications

Informed consent is one of the principal ethical requirements of conducting clinical research, regardless of the study setting. Breaches in the quality of the informed consent process are frequently described in reference to clinical trials conducted in developing countries, due to low levels of formal education, a lack of familiarity with biomedical research, and limited access to health services in these countries. However, few studies have directly compared the quality of the informed consent process in developed and developing countries using the same tool and in similar clinical trials. This study was conducted to compare the quality of the informed ...


Identification Of Candidate Infection Genes From The Model Entomopathogenic Nematode Heterorhabditis Bacteriophora., Jonathan Vadnal, Ramesh Ratnappan, Melissa Keaney, Eric Kenney, Ioannis Eleftherianos, Damien O'Halloran, John M. Hawdon 2017 George Washington University

Identification Of Candidate Infection Genes From The Model Entomopathogenic Nematode Heterorhabditis Bacteriophora., Jonathan Vadnal, Ramesh Ratnappan, Melissa Keaney, Eric Kenney, Ioannis Eleftherianos, Damien O'Halloran, John M. Hawdon

Microbiology, Immunology, and Tropical Medicine Faculty Publications

BACKGROUND: Despite important progress in the field of innate immunity, our understanding of host immune responses to parasitic nematode infections lags behind that of responses to microbes. A limiting factor has been the obligate requirement for a vertebrate host which has hindered investigation of the parasitic nematode infective process. The nematode parasite Heterorhabditis bacteriophora offers great potential as a model to genetically dissect the process of infection. With its mutualistic Photorhabdus luminescens bacteria, H. bacteriophora invades multiple species of insects, which it kills and exploits as a food source for the development of several nematode generations. The ability to culture ...


Nasopharyngeal Microbiome Diversity Changes Over Time In Children With Asthma, Marcos Pérez-Losada, Lamia Alamri, Keith Crandall, Robert J. Freishtat 2017 George Washington University

Nasopharyngeal Microbiome Diversity Changes Over Time In Children With Asthma, Marcos Pérez-Losada, Lamia Alamri, Keith Crandall, Robert J. Freishtat

Pediatrics Faculty Publications

Background

The nasopharynx is a reservoir for pathogens associated with respiratory illnesses such as asthma. Next-generation sequencing (NGS) has been used to characterize the nasopharyngeal microbiome of infants and adults during health and disease; less is known, however, about the composition and temporal dynamics (i.e., longitudinal variation) of microbiotas from children and adolescents. Here we use NGS technology to characterize the nasopharyngeal microbiomes of asthmatic children and adolescents (6 to 18 years) and determine their stability over time.

Methods

Two nasopharyngeal washes collected 5.5 to 6.5 months apart were taken from 40 children and adolescents with asthma ...


Genomes Of Fasciola Hepatica From The Americas Reveal Colonization With Neorickettsia Endobacteria Related To The Agents Of Potomac Horse And Human Sennetsu Fevers., Samantha N McNulty, Jose F Tort, Gabriel Rinaldi, Bruce A Rosa, Victoria H. Mann, Patricia S. Latham, Paul J. Brindley, +several additional authors 2017 George Washington University

Genomes Of Fasciola Hepatica From The Americas Reveal Colonization With Neorickettsia Endobacteria Related To The Agents Of Potomac Horse And Human Sennetsu Fevers., Samantha N Mcnulty, Jose F Tort, Gabriel Rinaldi, Bruce A Rosa, Victoria H. Mann, Patricia S. Latham, Paul J. Brindley, +Several Additional Authors

Microbiology, Immunology, and Tropical Medicine Faculty Publications

Food borne trematodes (FBTs) are an assemblage of platyhelminth parasites transmitted through the food chain, four of which are recognized as neglected tropical diseases (NTDs). Fascioliasis stands out among the other NTDs due to its broad and significant impact on both human and animal health, as Fasciola sp., are also considered major pathogens of domesticated ruminants. Here we present a reference genome sequence of the common liver fluke, Fasciola hepatica isolated from sheep, complementing previously reported isolate from cattle. A total of 14,642 genes were predicted from the 1.14 GB genome of the liver fluke. Comparative genomics indicated ...


Molecular Biology Of A Surface-Exposed Protein Family Of Bartonella Bacilliformis, Hannah Fay 2017 University of Montana

Molecular Biology Of A Surface-Exposed Protein Family Of Bartonella Bacilliformis, Hannah Fay

Undergraduate Theses and Professional Papers

Bartonella bacilliformis is a gram negative alpha-proteobacterium native to the Andes of South America. Bartonella causes Carrion’s disease, a potentially life threatening disease transmitted by the sand fly. It has a mortality rate of 88% when untreated and 10% when treated. Diagnostics and control measures for the disease are underdeveloped and no vaccine is available. Recent outbreaks indicate that the range of the pathogen is increasing with nearly 1.7 million people in western South America at risk. Little is known about the epidemiology and pathogenesis of B. bacilliformis. Recent research done by UC San Diego found a paralogous ...


Endoplasmic Reticulum Stress-Induced Hepatocellular Death Pathways Mediate Liver Injury And Fibrosis Via Stimulator Of Interferon Genes., Arvin Iracheta-Vellve, Jan Petrasek, Benedek Gyongyosi, Abhishek Satishchandran, Patrick Lowe, Karen Kodys, Donna Catalano, Charles D. Calenda, Evelyn A. Kurt-Jones, Kate A. Fitzgerald, Gyongyi Szabo 2016 University of Massachusetts Medical School

Endoplasmic Reticulum Stress-Induced Hepatocellular Death Pathways Mediate Liver Injury And Fibrosis Via Stimulator Of Interferon Genes., Arvin Iracheta-Vellve, Jan Petrasek, Benedek Gyongyosi, Abhishek Satishchandran, Patrick Lowe, Karen Kodys, Donna Catalano, Charles D. Calenda, Evelyn A. Kurt-Jones, Kate A. Fitzgerald, Gyongyi Szabo

Katherine A. Fitzgerald

Fibrosis, driven by inflammation, marks the transition from benign to progressive stages of chronic liver diseases. Although inflammation promotes fibrogenesis, it is not known whether other events, such as hepatocyte death, are required for the development of fibrosis. Interferon Regulatory Factor 3 (IRF3) regulates hepatocyte apoptosis and production of Type-I interferons (IFNs). In the liver, IRF3 is activated via Toll-like receptor 4 (TLR4) signaling or the ER adapter, Stimulator of Interferon Genes (STING). We hypothesized that IRF3-mediated hepatocyte death is an independent determinant of chemically-induced liver fibrogenesis. To test this, we performed acute or chronic carbontetrachloride (CCl4) administration to WT ...


Endoplasmic Reticulum Stress-Induced Hepatocellular Death Pathways Mediate Liver Injury And Fibrosis Via Stimulator Of Interferon Genes., Arvin Iracheta-Vellve, Jan Petrasek, Benedek Gyongyosi, Abhishek Satishchandran, Patrick Lowe, Karen Kodys, Donna Catalano, Charles D. Calenda, Evelyn A. Kurt-Jones, Kate A. Fitzgerald, Gyongyi Szabo 2016 University of Massachusetts Medical School

Endoplasmic Reticulum Stress-Induced Hepatocellular Death Pathways Mediate Liver Injury And Fibrosis Via Stimulator Of Interferon Genes., Arvin Iracheta-Vellve, Jan Petrasek, Benedek Gyongyosi, Abhishek Satishchandran, Patrick Lowe, Karen Kodys, Donna Catalano, Charles D. Calenda, Evelyn A. Kurt-Jones, Kate A. Fitzgerald, Gyongyi Szabo

Gyongyi Szabo

Fibrosis, driven by inflammation, marks the transition from benign to progressive stages of chronic liver diseases. Although inflammation promotes fibrogenesis, it is not known whether other events, such as hepatocyte death, are required for the development of fibrosis. Interferon Regulatory Factor 3 (IRF3) regulates hepatocyte apoptosis and production of Type-I interferons (IFNs). In the liver, IRF3 is activated via Toll-like receptor 4 (TLR4) signaling or the ER adapter, Stimulator of Interferon Genes (STING). We hypothesized that IRF3-mediated hepatocyte death is an independent determinant of chemically-induced liver fibrogenesis. To test this, we performed acute or chronic carbontetrachloride (CCl4) administration to WT ...


Endoplasmic Reticulum Stress-Induced Hepatocellular Death Pathways Mediate Liver Injury And Fibrosis Via Stimulator Of Interferon Genes., Arvin Iracheta-Vellve, Jan Petrasek, Benedek Gyongyosi, Abhishek Satishchandran, Patrick Lowe, Karen Kodys, Donna Catalano, Charles D. Calenda, Evelyn A. Kurt-Jones, Kate A. Fitzgerald, Gyongyi Szabo 2016 University of Massachusetts Medical School

Endoplasmic Reticulum Stress-Induced Hepatocellular Death Pathways Mediate Liver Injury And Fibrosis Via Stimulator Of Interferon Genes., Arvin Iracheta-Vellve, Jan Petrasek, Benedek Gyongyosi, Abhishek Satishchandran, Patrick Lowe, Karen Kodys, Donna Catalano, Charles D. Calenda, Evelyn A. Kurt-Jones, Kate A. Fitzgerald, Gyongyi Szabo

Arvin Iracheta-Vellve

Fibrosis, driven by inflammation, marks the transition from benign to progressive stages of chronic liver diseases. Although inflammation promotes fibrogenesis, it is not known whether other events, such as hepatocyte death, are required for the development of fibrosis. Interferon Regulatory Factor 3 (IRF3) regulates hepatocyte apoptosis and production of Type-I interferons (IFNs). In the liver, IRF3 is activated via Toll-like receptor 4 (TLR4) signaling or the ER adapter, Stimulator of Interferon Genes (STING). We hypothesized that IRF3-mediated hepatocyte death is an independent determinant of chemically-induced liver fibrogenesis. To test this, we performed acute or chronic carbontetrachloride (CCl4) administration to WT ...


Pertussis-Associated Pneumonia In Infants And Children From Low- And Middle-Income Countries Participating In The Perch Study., Breanna Barger-Kamate, Maria Deloria Knoll, E Wangeci Kagucia, Christine Prosperi, Henry C Baggett, Daniel E. Park, +31 additional authors 2016 George Washington University

Pertussis-Associated Pneumonia In Infants And Children From Low- And Middle-Income Countries Participating In The Perch Study., Breanna Barger-Kamate, Maria Deloria Knoll, E Wangeci Kagucia, Christine Prosperi, Henry C Baggett, Daniel E. Park, +31 Additional Authors

Epidemiology and Biostatistics Faculty Publications

BACKGROUND:  Few data exist describing pertussis epidemiology among infants and children in low- and middle-income countries to guide preventive strategies.

METHODS:  Children 1-59 months of age hospitalized with World Health Organization-defined severe or very severe pneumonia in 7 African and Asian countries and similarly aged community controls were enrolled in the Pneumonia Etiology Research for Child Health study. They underwent a standardized clinical evaluation and provided nasopharyngeal and oropharyngeal swabs and induced sputum (cases only) for Bordetella pertussis polymerase chain reaction. Risk factors and pertussis-associated clinical findings were identified.

RESULTS:  Bordetella pertussis was detected in 53 of 4200 (1.3 ...


A Microbiomic Approach To The Characterization Of The Impacts And Influences Of Viral, Bacterial, And Harmfulalgal Bloom Toxins On The Bottlenose Dolphin, Corey David Russo 2016 University of Southern Mississippi

A Microbiomic Approach To The Characterization Of The Impacts And Influences Of Viral, Bacterial, And Harmfulalgal Bloom Toxins On The Bottlenose Dolphin, Corey David Russo

Dissertations

As apex predators that display high site fidelity Tursiops truncatus (bottlenose dolphin) are indicators of marine ecosystem health. Bottlenose dolphins, additionally, display pathogenesis and immune response similar to that of humans. Humans and coastal bottlenose dolphins, in particular, are constantly exposed to the same industrial, agricultural and domestic toxins and pathogens, contaminants and pollutants. Thus, studies on the bottlenose dolphin are also valuable in bridging the gap between ocean and human health. Bottlenose dolphins are susceptible to viral bacterial and toxin infection. Infection in the bottlenose dolphin manifests itself in the form of mass stranding events, unusual mortality events, chronic ...


Diversity And Impacts Of Mining On The Non-Volant Small Mammal Communities Of Two Vegetation Types In The Brazilian Amazon, Natália Carneiro Ardente, Átilla Colombo Ferreguetti, Donald Gettinger, Pricila Leal, Ana Cristina Mendes-Oliveira, Fernanda Martins-Hatano, Helena Godoy Bergallo 2016 Universidade do Estado do Rio de Janeiro

Diversity And Impacts Of Mining On The Non-Volant Small Mammal Communities Of Two Vegetation Types In The Brazilian Amazon, Natália Carneiro Ardente, Átilla Colombo Ferreguetti, Donald Gettinger, Pricila Leal, Ana Cristina Mendes-Oliveira, Fernanda Martins-Hatano, Helena Godoy Bergallo

Faculty Publications from the Harold W. Manter Laboratory of Parasitology

The CarajaÂs National Forest contains some of the largest iron ore deposits in the world. The majority of the minerals are found below a plant community known as Savana Metalo fila, or ªCangaº, which represents only 3% of the landscape within the CarajaÂs National Forest (CNF). The aim of our study was to understand the diversity of community of non-volant small mammals in the two predominant vegetation types: Ombrophilous Forest and Canga, and to examine how mining impacts these communities. Sampling was conducted from January 2010 to August 2011 in 11 sampling sites divided by the total area of Canga ...


Endoplasmic Reticulum Stress-Induced Hepatocellular Death Pathways Mediate Liver Injury And Fibrosis Via Stimulator Of Interferon Genes., Arvin Iracheta-Vellve, Jan Petrasek, Benedek Gyongyosi, Abhishek Satishchandran, Patrick Lowe, Karen Kodys, Donna Catalano, Charles D. Calenda, Evelyn A. Kurt-Jones, Kate A. Fitzgerald, Gyongyi Szabo 2016 University of Massachusetts Medical School

Endoplasmic Reticulum Stress-Induced Hepatocellular Death Pathways Mediate Liver Injury And Fibrosis Via Stimulator Of Interferon Genes., Arvin Iracheta-Vellve, Jan Petrasek, Benedek Gyongyosi, Abhishek Satishchandran, Patrick Lowe, Karen Kodys, Donna Catalano, Charles D. Calenda, Evelyn A. Kurt-Jones, Kate A. Fitzgerald, Gyongyi Szabo

GSBS Student Publications

Fibrosis, driven by inflammation, marks the transition from benign to progressive stages of chronic liver diseases. Although inflammation promotes fibrogenesis, it is not known whether other events, such as hepatocyte death, are required for the development of fibrosis. Interferon Regulatory Factor 3 (IRF3) regulates hepatocyte apoptosis and production of Type-I interferons (IFNs). In the liver, IRF3 is activated via Toll-like receptor 4 (TLR4) signaling or the ER adapter, Stimulator of Interferon Genes (STING). We hypothesized that IRF3-mediated hepatocyte death is an independent determinant of chemically-induced liver fibrogenesis. To test this, we performed acute or chronic carbontetrachloride (CCl4) administration to WT ...


The Rodent Parvovirus H-1 And Its Potential In Combination With Tien Hsien Liquid As A Treatment For Breast Cancer, Hayley I. Spires 2016 Southeastern University - Lakeland

The Rodent Parvovirus H-1 And Its Potential In Combination With Tien Hsien Liquid As A Treatment For Breast Cancer, Hayley I. Spires

Selected Honors Theses

Breast cancer is responsible for 12% of cancer diagnoses each year, and it is the leading cause of cancer-related mortality in women worldwide. Current treatments have provided some success in combatting the disease but are not considered a final solution. The framework for how researchers approach cancer has continued to change, and this includes the introduction of oncolytic viruses as novel therapeutics for cancer. The rodent parvovirus H-1 has shown strong potential in clinical and subclinical trials, but its S phase dependency limits its usefulness against cancer stem cell populations. Tien Hsien Liquid is commerically available, nontoxic, and has shown ...


Novel Mutation Of Interferon-Γ Receptor 1 Gene Presenting As Early Life Mycobacterial Bronchial Disease, Maria J. Gutierrez, Neelu Kaira, Alexandra Horwitz, Gustavo Nino 2016 George Washington University

Novel Mutation Of Interferon-Γ Receptor 1 Gene Presenting As Early Life Mycobacterial Bronchial Disease, Maria J. Gutierrez, Neelu Kaira, Alexandra Horwitz, Gustavo Nino

Pediatrics Faculty Publications

Mendelian susceptibility to mycobacterial diseases (MSMD) are a spectrum of inherited disorders characterized by localized or disseminated infections caused by atypical mycobacteria. Interferon-γ receptor 1 (IFNGR1) deficiency was the first identified genetic disorder recognized as MSMD. Mutations in the genes encoding IFNGR1 can be recessive or dominant and cause complete or partial receptor deficiency. We present the case of a 2½-year-old boy with a history of recurrent wheezing, diagnosed with endobronchial mycobacterial infection. Immunological workup revealed a homozygous nonsense mutation in the IFNGR1 gene, a novel mutation predicted in silico to cause complete IFNGR1 deficiency. This case demonstrates that (a ...


Nk-Cd11c+ Cell Crosstalk In Diabetes Enhances Il-6-Mediated Inflammation During Mycobacterium Tuberculosis Infection, Satyanarayana Swamy Cheekatla, Deepak Tripathi, Sambasivan Venkatasubramanian, Pavan Kumar Nathella, Padmaja Paidipally, Munenori Ishibashi, Elwyn Welch, Amy R. Tvinnereim, Mitsuo Ikebe, Vijaya Lakshmi Valluri, Subash Babu, Hardy Kornfeld, Ramakrishna Vankayalapati 2016 University of Texas Health Science Center at Tyler

Nk-Cd11c+ Cell Crosstalk In Diabetes Enhances Il-6-Mediated Inflammation During Mycobacterium Tuberculosis Infection, Satyanarayana Swamy Cheekatla, Deepak Tripathi, Sambasivan Venkatasubramanian, Pavan Kumar Nathella, Padmaja Paidipally, Munenori Ishibashi, Elwyn Welch, Amy R. Tvinnereim, Mitsuo Ikebe, Vijaya Lakshmi Valluri, Subash Babu, Hardy Kornfeld, Ramakrishna Vankayalapati

Open Access Articles

In this study, we developed a mouse model of type 2 diabetes mellitus (T2DM) using streptozotocin and nicotinamide and identified factors that increase susceptibility of T2DM mice to infection by Mycobacterium tuberculosis (Mtb). All Mtb-infected T2DM mice and 40% of uninfected T2DM mice died within 10 months, whereas all control mice survived. In Mtb-infected mice, T2DM increased the bacterial burden and pro- and anti-inflammatory cytokine and chemokine production in the lungs relative to those in uninfected T2DM mice and infected control mice. Levels of IL-6 also increased. Anti-IL-6 monoclonal antibody treatment of Mtb-infected acute- and chronic-T2DM mice increased survival (to ...


The Case For Selection At Ccr5-Δ32, Pardis Sabeti, Emily C. Walsh, Stephen F. Schaffner, Patrick Varilly, Ben Fry, Holli Hutcheson, Mike Cullen, Tarjei S. Mikkelsen, Jessica Roy, Nick Patterson, Richard Cooper, David Reich, David Altshuler, Stephen J. O'Brien, Eric S. Lander 2016 Broad Institute; Harvard Medical School

The Case For Selection At Ccr5-Δ32, Pardis Sabeti, Emily C. Walsh, Stephen F. Schaffner, Patrick Varilly, Ben Fry, Holli Hutcheson, Mike Cullen, Tarjei S. Mikkelsen, Jessica Roy, Nick Patterson, Richard Cooper, David Reich, David Altshuler, Stephen J. O'Brien, Eric S. Lander

Stephen O'Brien

The C-C chemokine receptor 5, 32 base-pair deletion (CCR5-Δ32) allele confers strong resistance to infection by the AIDS virus HIV. Previous studies have suggested that CCR5-Δ32 arose within the past 1,000 y and rose to its present high frequency (5%–14%) in Europe as a result of strong positive selection, perhaps by such selective agents as the bubonic plague or smallpox during the Middle Ages. This hypothesis was based on several lines of evidence, including the absence of the allele outside of Europe and long-range linkage disequilibrium at the locus. We reevaluated this evidence with ...


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