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Geographically-Weighted Regression Of Knowledge And Behaviour Determinants To Anti-Malarial Recommending And Dispensing Practice Among Medicine Retailers In Western Kenya: Capacitating Targeted Interventions, Andria Rusk, Linda Highfield, J. Michael Wilkerson, Melissa Harrell, Andrew Obala, Benjamin Amick 2016 Department of Public Health and Health Sciences, Dominican University of California

Geographically-Weighted Regression Of Knowledge And Behaviour Determinants To Anti-Malarial Recommending And Dispensing Practice Among Medicine Retailers In Western Kenya: Capacitating Targeted Interventions, Andria Rusk, Linda Highfield, J. Michael Wilkerson, Melissa Harrell, Andrew Obala, Benjamin Amick

Collected Faculty and Staff Scholarship

Background

Most patients with malaria seek treatment first in retail drug shops. Myriad studies have examined retailer behaviours and characteristics to understand the determinants to these behaviours. Geospatial methods are helpful in discovering if geographic location plays a role in the relationship between determinants and outcomes. This study aimed to discover if spatial autocorrelation exists in the relationship between determinants and retailer behaviours, and to provide specific geographic locations and target behaviours for tailoring future interventions.

Methods

Retailer behaviours and characteristics captured from a survey deployed to medicine retailers in the Webuye Demographic and Health Surveillance Site were analysed using ...


The Nih-Niaid Schistosomiasis Resource Center At The Biomedical Research Institute: Molecular Redux., James J Cody, Wannaporn Ittiprasert, André N Miller, Lucie Henein, Margaret M Mentink-Kane, Michael H. Hsieh 2016 George Washington University

The Nih-Niaid Schistosomiasis Resource Center At The Biomedical Research Institute: Molecular Redux., James J Cody, Wannaporn Ittiprasert, André N Miller, Lucie Henein, Margaret M Mentink-Kane, Michael H. Hsieh

Urology Faculty Publications

Schistosomiasis remains a health burden in many parts of the world. The complex life cycle of Schistosoma parasites and the economic and societal conditions present in endemic areas make the prospect of eradication unlikely in the foreseeable future. Continued and vigorous research efforts must therefore be directed at this disease, particularly since only a single World Health Organization (WHO)-approved drug is available for treatment. The National Institutes of Health (NIH)-National Institute of Allergy and Infectious Diseases (NIAID) Schistosomiasis Resource Center (SRC) at the Biomedical Research Institute provides investigators with the critical raw materials needed to carry out this ...


Hiv-1 Integrates Widely Throughout The Genome Of The Human Blood Fluke Schistosoma Mansoni., Sutas Suttiprapa, Gabriel Rinaldi, Isheng J Tsai, Victoria H. Mann, Larisa Dubrovsky, Hong-Bin Yan, Nancy Holroyd, Thomas Huckvale, Caroline Durrant, Anna V Protasio, Tatiana Pushkarsky, Sergey Iordanskiy, Matthew Berriman, Michael I. Bukrinsky, Paul J. Brindley 2016 George Washington University

Hiv-1 Integrates Widely Throughout The Genome Of The Human Blood Fluke Schistosoma Mansoni., Sutas Suttiprapa, Gabriel Rinaldi, Isheng J Tsai, Victoria H. Mann, Larisa Dubrovsky, Hong-Bin Yan, Nancy Holroyd, Thomas Huckvale, Caroline Durrant, Anna V Protasio, Tatiana Pushkarsky, Sergey Iordanskiy, Matthew Berriman, Michael I. Bukrinsky, Paul J. Brindley

Microbiology, Immunology, and Tropical Medicine Faculty Publications

Schistosomiasis is the most important helminthic disease of humanity in terms of morbidity and mortality. Facile manipulation of schistosomes using lentiviruses would enable advances in functional genomics in these and related neglected tropical diseases pathogens including tapeworms, and including their non-dividing cells. Such approaches have hitherto been unavailable. Blood stream forms of the human blood fluke, Schistosoma mansoni, the causative agent of the hepatointestinal schistosomiasis, were infected with the human HIV-1 isolate NL4-3 pseudotyped with vesicular stomatitis virus glycoprotein. The appearance of strong stop and positive strand cDNAs indicated that virions fused to schistosome cells, the nucleocapsid internalized and the ...


The Global Economic And Health Burden Of Human Hookworm Infection., Sarah M Bartsch, Peter J. Hotez, Lindsey Asti, Kristina M Zapf, Maria Elena Bottazzi, David J. Diemert, Bruce Y Lee 2016 George Washington University

The Global Economic And Health Burden Of Human Hookworm Infection., Sarah M Bartsch, Peter J. Hotez, Lindsey Asti, Kristina M Zapf, Maria Elena Bottazzi, David J. Diemert, Bruce Y Lee

Microbiology, Immunology, and Tropical Medicine Faculty Publications

BACKGROUND: Even though human hookworm infection is highly endemic in many countries throughout the world, its global economic and health impact is not well known. Without a better understanding of hookworm's economic burden worldwide, it is difficult for decision makers such as funders, policy makers, disease control officials, and intervention manufacturers to determine how much time, energy, and resources to invest in hookworm control.

METHODOLOGY/PRINCIPLE FINDINGS: We developed a computational simulation model to estimate the economic and health burden of hookworm infection in every country, WHO region, and globally, in 2016 from the societal perspective. Globally, hookworm infection ...


Human Monoclonal Antibodies To Plasmodium Falciparum Circumsporozoite Protein For Transient Passive Protection Of Malaria Travelers To Endemic Areas, Stuart Nelson, Douglas Golenbock, Ann M. Moormann, Colby A. Souders, Lisa Cavacini 2016 University of Massachusettts Medical School

Human Monoclonal Antibodies To Plasmodium Falciparum Circumsporozoite Protein For Transient Passive Protection Of Malaria Travelers To Endemic Areas, Stuart Nelson, Douglas Golenbock, Ann M. Moormann, Colby A. Souders, Lisa Cavacini

Ann M. Moormann

Plasmodium falciparum, is a protozoa that causes over 214 million cases of Malaria worldwide and the World Health Organization reported an estimated 438,000 deaths attributed to malaria in 2015. Current prevention strategies have reduced malaria cases but they are either costly, have poor efficacy or resistance has begun to develop. There is a global need for an effective pre-exposure prophylaxis treatment.

The leading Malaria vaccine candidate is RTS,S which contains a monovalent Plasmodium falciparum circumsporozoite protein (CSP). The goal of this vaccine is to induce anti-CSP antibodies that would block sporozoite invasion of hepatocytes and thereby hinder parasite ...


The Immunomodulatory Role Of Adjuvants In Vaccines Formulated With The Recombinant Antigens Ov-103 And Ov-Ral-2 Against Onchocerca Volvulus In Mice., Jessica A. Hess Ligas, Bin Zhan, April R. Torigian, John B. Patton, Nikolai Petrovsky, Tingting Zhan, Maria Elena Bottazzi, Peter J. Hotez, Thomas R. Klei, Sara Lustigman, David Abraham 2016 Thomas Jefferson University

The Immunomodulatory Role Of Adjuvants In Vaccines Formulated With The Recombinant Antigens Ov-103 And Ov-Ral-2 Against Onchocerca Volvulus In Mice., Jessica A. Hess Ligas, Bin Zhan, April R. Torigian, John B. Patton, Nikolai Petrovsky, Tingting Zhan, Maria Elena Bottazzi, Peter J. Hotez, Thomas R. Klei, Sara Lustigman, David Abraham

Department of Microbiology and Immunology Faculty Papers

BACKGROUND: In some regions in Africa, elimination of onchocerciasis may be possible with mass drug administration, although there is concern based on several factors that onchocerciasis cannot be eliminated solely through this approach. A vaccine against Onchocerca volvulus would provide a critical tool for the ultimate elimination of this infection. Previous studies have demonstrated that immunization of mice with Ov-103 and Ov-RAL-2, when formulated with alum, induced protective immunity. It was hypothesized that the levels of protective immunity induced with the two recombinant antigens formulated with alum would be improved by formulation with other adjuvants known to enhance different types ...


Global Assessment Of Schistosomiasis Control Over The Past Century Shows Targeting The Snail Intermediate Host Works Best., Susanne H Sokolow, Chelsea L Wood, Isabel J Jones, Scott J Swartz, Melina Lopez, Michael H. Hsieh, Kevin D Lafferty, Armand M Kuris, Chloe Rickards, Giulio A De Leo 2016 George Washington University

Global Assessment Of Schistosomiasis Control Over The Past Century Shows Targeting The Snail Intermediate Host Works Best., Susanne H Sokolow, Chelsea L Wood, Isabel J Jones, Scott J Swartz, Melina Lopez, Michael H. Hsieh, Kevin D Lafferty, Armand M Kuris, Chloe Rickards, Giulio A De Leo

Urology Faculty Publications

BACKGROUND: Despite control efforts, human schistosomiasis remains prevalent throughout Africa, Asia, and South America. The global schistosomiasis burden has changed little since the new anthelmintic drug, praziquantel, promised widespread control.

METHODOLOGY: We evaluated large-scale schistosomiasis control attempts over the past century and across the globe by identifying factors that predict control program success: snail control (e.g., molluscicides or biological control), mass drug administrations (MDA) with praziquantel, or a combined strategy using both. For data, we compiled historical information on control tactics and their quantitative outcomes for all 83 countries and territories in which: (i) schistosomiasis was allegedly endemic during ...


Biliary Microbiota, Gallstone Disease And Infection With Opisthorchis Felineus., Irina V. Saltykova, Vjacheslav A Petrov, Maria D Logacheva, Polina G Ivanova, Nikolay V Merzlikin, Alexey E Sazonov, Ludmila M Ogorodova, Paul J. Brindley 2016 George Washington University

Biliary Microbiota, Gallstone Disease And Infection With Opisthorchis Felineus., Irina V. Saltykova, Vjacheslav A Petrov, Maria D Logacheva, Polina G Ivanova, Nikolay V Merzlikin, Alexey E Sazonov, Ludmila M Ogorodova, Paul J. Brindley

Microbiology, Immunology, and Tropical Medicine Faculty Publications

BACKGROUND: There is increasing interest in the microbiome of the hepatobiliary system. This study investigated the influence of infection with the fish-borne liver fluke, Opisthorchis felineus on the biliary microbiome of residents of the Tomsk region of western Siberia.

METHODOLOGY/PRINCIPAL FINDINGS: Samples of bile were provided by 56 study participants, half of who were infected with O. felineus, and all of who were diagnosed with gallstone disease. The microbiota of the bile was investigated using high throughput, Illumina-based sequencing targeting the prokaryotic 16S rRNA gene. About 2,797, discrete phylotypes of prokaryotes were detected. At the level of phylum ...


Lack Of Artemisinin Resistance In Plasmodium Falciparum In Uganda Based On Parasitological And Molecular Assays, Roland A. Cooper, Melissa D. Conrad, Quentin D. Watson, Stephanie J. Huezo, Harriet Ninsiima, Patrick Tumwebaze, Samuel L. Nsobya, Philip J. Rosenthal 2016 Department of Natural Sciences and Mathematics, Dominican University of California

Lack Of Artemisinin Resistance In Plasmodium Falciparum In Uganda Based On Parasitological And Molecular Assays, Roland A. Cooper, Melissa D. Conrad, Quentin D. Watson, Stephanie J. Huezo, Harriet Ninsiima, Patrick Tumwebaze, Samuel L. Nsobya, Philip J. Rosenthal

Roland A. Cooper

We evaluated markers of artemisinin resistance in Plasmodium falciparum isolated in Kampala in 2014. By standard in vitro assays, all isolates were highly sensitive to dihydroartemisinin (DHA). By the ring-stage survival assay, after a 6-h DHA pulse, parasitemia was undetectable in 40 of 43 cultures at 72 h. Two of 53 isolates had nonsynonymous K13-propeller gene polymorphisms but did not have the mutations associated with resistance in Asia. Thus, we did not see evidence for artemisinin resistance in Uganda.


Using Predator Carrying Capacity For A Pathogenic Vector-Dynamic Differential Model, Rosahn P. Bhattarai 2016 Georgia State University

Using Predator Carrying Capacity For A Pathogenic Vector-Dynamic Differential Model, Rosahn P. Bhattarai

Biology and Medicine Through Mathematics Conference

No abstract provided.


Crystal Protein Cry5b As A Novel And Powerful Anthelmintic, David Koch, Zeynep Mirza, Yan Hu, Thanh-thanh Nguyen, Gary R. Ostroff, Raffi V. Aroian 2016 University of Massachusetts Medical School

Crystal Protein Cry5b As A Novel And Powerful Anthelmintic, David Koch, Zeynep Mirza, Yan Hu, Thanh-Thanh Nguyen, Gary R. Ostroff, Raffi V. Aroian

UMass Center for Clinical and Translational Science Research Retreat

Soil-transmitted helminths (STHs), most notably, hookworms, whipworms, and Ascaris, are nematodes that infect more than 1.5 billion of the poorest people and are amongst the leading causes of morbidity worldwide. Only two classes of de-worming drugs (anthelmintics) are available for treatment, and only one is commonly used in mass drug administrations. New anthelmintics are urgently needed to overcome emerging resistance and to produce higher cure rates. Crystal (Cry) proteins, in particular Cry5B, made by Bacillus thuringiensis (Bt) are promising new candidates. Cry5B has excellent anthelmintic properties against many free-living and parasitic nematodes, including in vivo efficacy against multiple STH ...


Human Monoclonal Antibodies To Plasmodium Falciparum Circumsporozoite Protein For Transient Passive Protection Of Malaria Travelers To Endemic Areas, Stuart Nelson, Douglas Golenbock, Ann M. Moormann, Colby A. Souders, Lisa Cavacini 2016 University of Massachusettts Medical School

Human Monoclonal Antibodies To Plasmodium Falciparum Circumsporozoite Protein For Transient Passive Protection Of Malaria Travelers To Endemic Areas, Stuart Nelson, Douglas Golenbock, Ann M. Moormann, Colby A. Souders, Lisa Cavacini

UMass Center for Clinical and Translational Science Research Retreat

Plasmodium falciparum, is a protozoa that causes over 214 million cases of Malaria worldwide and the World Health Organization reported an estimated 438,000 deaths attributed to malaria in 2015. Current prevention strategies have reduced malaria cases but they are either costly, have poor efficacy or resistance has begun to develop. There is a global need for an effective pre-exposure prophylaxis treatment.

The leading Malaria vaccine candidate is RTS,S which contains a monovalent Plasmodium falciparum circumsporozoite protein (CSP). The goal of this vaccine is to induce anti-CSP antibodies that would block sporozoite invasion of hepatocytes and thereby hinder parasite ...


Bioavailability Of The Antimalarial Drug Artemisinin Delivered Orally As Dried Leaves Of Artemisia Annua: The Role Of Solubility And Protein., Matthew Desrosiers, Pamela Weathers 2016 Worcester Polytechnic Institute

Bioavailability Of The Antimalarial Drug Artemisinin Delivered Orally As Dried Leaves Of Artemisia Annua: The Role Of Solubility And Protein., Matthew Desrosiers, Pamela Weathers

UMass Center for Clinical and Translational Science Research Retreat

Malaria treatment using orally consumed dried leaves of the artemisinin producing GRAS plant Artemisia annua has recently shown promise. Previously we showed, oral consumption of A. annua dried leaves (DLA) yielded >40 times more artemisinin in the blood of mice than treatment with pure artemisinin. Using the Caco-2 cell culture model of the human intestinal epithelium, we also showed that compared to pure artemisinin, digested DLA doubled the permeability (Papp). Here, using simulated human digestion, we show that artemisinin solubility is about seven times higher in digestates of DLA than in digestates of pure artemisinin, likely contributing to its enhanced ...


A Novel Population Of Natural Killer Cells Pplays A Critical Role In The Depletion Of Splenic B2 B Cells During Experimental Africian Trypanosomiasis, Deborah Frenkel, Samuel J. Black 2016 University of Massachusetts Amherst

A Novel Population Of Natural Killer Cells Pplays A Critical Role In The Depletion Of Splenic B2 B Cells During Experimental Africian Trypanosomiasis, Deborah Frenkel, Samuel J. Black

UMass Center for Clinical and Translational Science Research Retreat

Mice infected with Trypanosoma brucei, the causative agent of human sleeping sickness and a contributor to nagana in cattle, rapidly lose the capacity to mount VSG-specific antibody responses, and die with uncontrolled parasitemia. We have shown (Bockstal et al., 2011, PLOS Pathogens) that the loss of humoral immune competence in the infected mice results from depletion of developing and mature splenic B cells. We now report that T. brucei-induced splenic B cell depletion is dependent upon the presence of the pore forming molecule perforin which is present in the cytotoxic granules of cytotoxic T lymphocytes, natural killer T cells and ...


Terpenes As ‘Resistance-Busting” Anthelmintic Drug, Zeynep Mirza, David Koch, Thanh-thanh Nguyen, Yan Hu, Raffi V. Aroian, Gary R. Ostroff 2016 University of Massachusettts Medical School

Terpenes As ‘Resistance-Busting” Anthelmintic Drug, Zeynep Mirza, David Koch, Thanh-Thanh Nguyen, Yan Hu, Raffi V. Aroian, Gary R. Ostroff

UMass Center for Clinical and Translational Science Research Retreat

There is an urgent need for new therapies for parasitic helminthic diseases affecting 1.5-2 billion people worldwide due to the threat of wide-spread resistance development to existing treatments and due to problems of incomplete efficacies.

Terpenes are plant secondary metabolites and major essential oil constituents. Historically, the terpene thymol was successfully used to cure hookworm infections in the 1900’s. Although effective, large doses were needed and thymol treatment had significant side effects. Because free terpenes are absorbed in the stomach, less than 10% of oral terpenes entered the site where the parasites live. To overcome these problems we ...


Anthelminthic Screening For Parasitic Nematodes, Elfawal A. Mostafa, Dan Lawler, Dirk Albrecht, Raffi V. Aroian 2016 University of Massachusetts Medical School

Anthelminthic Screening For Parasitic Nematodes, Elfawal A. Mostafa, Dan Lawler, Dirk Albrecht, Raffi V. Aroian

UMass Center for Clinical and Translational Science Research Retreat

For many parasitic diseases, high-throughput phenotypic screening is an important tool in finding new drugs. Some of the most important parasitic diseases are caused by nematodes. However, these parasitic nematodes are not typically amenable to high throughput screening. Due to the ease of its maintenance and suitability for high throughput assay, the nematode Caenorhabditis elegans is instead used. To address whether C. elegans is a good model for nematode drug discovery, we compared the drug susceptibility of C. elegans relative to the human hookworm nematode parasite Ancylostoma ceylanicum at several developmental stages using a library of FDA approved drugs. I ...


Impact Of Antimalarial Treatment And Chemoprevention On The Drug Sensitivity Of Malaria Parasites Isolated From Ugandan Children, Patrick Tumwebaze, Melisssa D. Conrad, Andrew Walakira, Norbert LeClair, Oswald Byaruhanga, Christine Nakazibwe, Benjamin Kozak, Jessica Bloome, Jaffer Okiring, Abel Kakuru, Victor Bigira, James Kapisi, Jennifer Legac, Jiri Gut, Roland A. Cooper, Moses R. Kamya, Diane V. Havlir, Grant Dorsey, Bryan Greenhouse, Samuel L. Nsobya, Philip J. Rosenthal 2016 Infectious Diseases Research Collaboration, Kampala, Uganda

Impact Of Antimalarial Treatment And Chemoprevention On The Drug Sensitivity Of Malaria Parasites Isolated From Ugandan Children, Patrick Tumwebaze, Melisssa D. Conrad, Andrew Walakira, Norbert Leclair, Oswald Byaruhanga, Christine Nakazibwe, Benjamin Kozak, Jessica Bloome, Jaffer Okiring, Abel Kakuru, Victor Bigira, James Kapisi, Jennifer Legac, Jiri Gut, Roland A. Cooper, Moses R. Kamya, Diane V. Havlir, Grant Dorsey, Bryan Greenhouse, Samuel L. Nsobya, Philip J. Rosenthal

Roland A. Cooper

Changing treatment practices may be selecting for changes in the drug sensitivity of malaria parasites. We characterized ex vivo drug sensitivity and parasite polymorphisms associated with sensitivity in 459 Plasmodium falciparum samples obtained from subjects enrolled in two clinical trials in Tororo, Uganda, from 2010 to 2013. Sensitivities to chloroquine and monodesethylamodiaquine varied widely; sensitivities to quinine, dihydroartemisinin, lumefantrine, and piperaquine were generally good. Associations between ex vivo drug sensitivity and parasite polymorphisms included decreased chloroquine and monodesethylamodiaquine sensitivity and increased lumefantrine and piperaquine sensitivity with pfcrt 76T, as well as increased lumefantrine sensitivity with pfmdr1 86Y, Y184, and 1246Y ...


Studies On The Prevalence And Control Of Parasitic Helminths In "Natural" Laying Hens, Brittany R. Weir 2016 University of Arkansas, Fayetteville

Studies On The Prevalence And Control Of Parasitic Helminths In "Natural" Laying Hens, Brittany R. Weir

Animal Science Undergraduate Honors Theses

One societal trend that has been gaining much traction and popularity since the 21st century began is “organic” and/or “natural” food products. In 1999, the global market accounted for $15.2 billion dollars worth of organic food and drink, compared to the market in 2014 where we consumed $80 billion dollars worth (Willer et. al, 2016). With “natural” production of food animals however, “natural” parasite transmission may be a consequence. To that end, this experiment examines the prevalence of helminths in 110 “natural” laying hens from three regional farms and the efficacies of fenbendazole, piperazine, and levamisole on ...


The Combined Deficiency Of Immunoproteasome Subunits Affects Both The Magnitude And Quality Of Pathogen- And Genetic Vaccination-Induced Cd8+ T Cell Responses To The Human Protozoan Parasite Trypanosoma Cruzi, Jonatan Ersching, Jose Ronnie Vasconcelos, Camila P. Ferreira, Braulia C. Caetano, Alexandre Vieira Machado, Oscar Bruna-Romero, Monique A. Baron, Ludmila R.P. Ferreira, Edecio Cunha-Neto, Kenneth L. Rock, Ricardo T. Gazzinelli, Mauricio Martins Rodrigues 2016 Universidade Federal de Sao Paulo

The Combined Deficiency Of Immunoproteasome Subunits Affects Both The Magnitude And Quality Of Pathogen- And Genetic Vaccination-Induced Cd8+ T Cell Responses To The Human Protozoan Parasite Trypanosoma Cruzi, Jonatan Ersching, Jose Ronnie Vasconcelos, Camila P. Ferreira, Braulia C. Caetano, Alexandre Vieira Machado, Oscar Bruna-Romero, Monique A. Baron, Ludmila R.P. Ferreira, Edecio Cunha-Neto, Kenneth L. Rock, Ricardo T. Gazzinelli, Mauricio Martins Rodrigues

Open Access Articles

The beta1i, beta2i and beta5i immunoproteasome subunits have an important role in defining the repertoire of MHC class I-restricted epitopes. However, the impact of combined deficiency of the three immunoproteasome subunits in the development of protective immunity to intracellular pathogens has not been investigated. Here, we demonstrate that immunoproteasomes play a key role in host resistance and genetic vaccination-induced protection against the human pathogen Trypanosoma cruzi (the causative agent of Chagas disease), immunity to which is dependent on CD8+ T cells and IFN-gamma (the classical immunoproteasome inducer). We observed that infection with T. cruzi triggers the transcription of immunoproteasome genes ...


The Repertoire Of G Protein-Coupled Receptors In The Human Parasite Schistosoma Mansoni And The Model Organism Schmidtea Mediterranea, Mostafa Zamanian, Michael J. Kimber, Paul McVeigh, Steve A. Carlson, Aaron G. Maule, Timothy A. Day 2016 Iowa State University

The Repertoire Of G Protein-Coupled Receptors In The Human Parasite Schistosoma Mansoni And The Model Organism Schmidtea Mediterranea, Mostafa Zamanian, Michael J. Kimber, Paul Mcveigh, Steve A. Carlson, Aaron G. Maule, Timothy A. Day

Michael J. Kimber

Background G protein-coupled receptors (GPCRs) constitute one of the largest groupings of eukaryotic proteins, and represent a particularly lucrative set of pharmaceutical targets. They play an important role in eukaryotic signal transduction and physiology, mediating cellular responses to a diverse range of extracellular stimuli. The phylum Platyhelminthes is of considerable medical and biological importance, housing major pathogens as well as established model organisms. The recent availability of genomic data for the human blood fluke Schistosoma mansoni and the model planarian Schmidtea mediterranea paves the way for the first comprehensive effort to identify and analyze GPCRs in this important phylum.

Results ...


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