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Biodefense

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https://www.readbyqxmd.com/read/29350543/a-publicly-available-landscape-analysis-tool-for-biodefense-policy
#1
Kristin M Omberg, Lyndsey R Franklin, Daniel R Jackson, Karen L Taylor, Karen L Wahl, Ann Lesperance, Ellen M Wynkoop, Jessica A S Gray, Owen P Leiser, Sarah L Frazar, Richard Ozanich, Rachel Bartholomew
No abstract text is available yet for this article.
January 19, 2018: Health Security
https://www.readbyqxmd.com/read/29350155/yersinia-pestis-survival-and-replication-in-potential-ameba-reservoir
#2
David W Markman, Michael F Antolin, Richard A Bowen, William H Wheat, Michael Woods, Mercedes Gonzalez-Juarrero, Mary Jackson
Plague ecology is characterized by sporadic epizootics, then periods of dormancy. Building evidence suggests environmentally ubiquitous amebae act as feral macrophages and hosts to many intracellular pathogens. We conducted environmental genetic surveys and laboratory co-culture infection experiments to assess whether plague bacteria were resistant to digestion by 5 environmental ameba species. First, we demonstrated that Yersinia pestis is resistant or transiently resistant to various ameba species. Second, we showed that Y...
February 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29238328/impact-of-aerosol-dust-on-xmap-multiplex-detection-of-different-class-pathogens
#3
Denis A Kleymenov, Vladimir A Gushchin, Alexander L Gintsburg, Artem P Tkachuk
Environmental or city-scale bioaerosol surveillance can provide additional value for biodefense and public health. Efficient bioaerosol monitoring should rely on multiplex systems capable of detecting a wide range of biologically hazardous components potentially present in air (bacteria, viruses, toxins and allergens). xMAP technology from LuminexTM allows multiplex bead-based detection of antigens or nucleic acids, but its use for simultaneous detection of different classes of pathogens (bacteria, virus, toxin) is questionable...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29231870/improving-the-care-and-treatment-of-monkeypox-patients-in-low-resource-settings-applying-evidence-from-contemporary-biomedical-and-smallpox-biodefense-research
#4
REVIEW
Mary G Reynolds, Andrea M McCollum, Beatrice Nguete, Robert Shongo Lushima, Brett W Petersen
Monkeypox is a smallpox-like illness that can be accompanied by a range of significant medical complications. To date there are no standard or optimized guidelines for the clinical management of monkeypox (MPX) patients, particularly in low-resource settings. Consequently, patients can experience protracted illness and poor outcomes. Improving care necessitates developing a better understanding of the range of clinical manifestations-including complications and sequelae-as well as of features of illness that may be predictive of illness severity and poor outcomes...
December 12, 2017: Viruses
https://www.readbyqxmd.com/read/29224407/quantification-of-regional-aerosol-deposition-patterns-as-a-function-of-aerodynamic-particle-size-in-rhesus-macaques-using-pet-ct-imaging
#5
P A Dabisch, Z Xu, J A Boydston, J Solomon, J K Bohannon, J J Yeager, J R Taylor, R J Reeder, P Sayre, J Seidel, D J Mollura, M C Hevey, P B Jahrling, M G Lackemeyer
Aerosol aerodynamic particle size is known to affect deposition patterns of inhaled aerosol particles, as well as the virulence of inhaled bioaerosol particles. While a significant amount of work has been performed to describe the deposition of aerosol particles in the human respiratory tract, only a limited amount of work has been performed to describe the deposition of aerosol particles in the respiratory tract of nonhuman primates, an animal model commonly utilized in pharmacological and toxicological studies, especially in the biodefense field...
December 11, 2017: Inhalation Toxicology
https://www.readbyqxmd.com/read/29193346/biomimetic-platelet-camouflaged-nanorobots-for-binding-and-isolation-of-biological-threats
#6
Jinxing Li, Pavimol Angsantikul, Wenjuan Liu, Berta Esteban-Fernández de Ávila, Xiaocong Chang, Elodie Sandraz, Yuyan Liang, Siyu Zhu, Yue Zhang, Chuanrui Chen, Weiwei Gao, Liangfang Zhang, Joseph Wang
One emerging and exciting topic in robotics research is the design of micro-/nanoscale robots for biomedical operations. Unlike industrial robots that are developed primarily to automate routine and dangerous tasks, biomedical nanorobots are designed for complex, physiologically relevant environments, and tasks that involve unanticipated biological events. Here, a biologically interfaced nanorobot is reported, made of magnetic helical nanomotors cloaked with the plasma membrane of human platelets. The resulting biomimetic nanorobots possess a biological membrane coating consisting of diverse functional proteins associated with human platelets...
November 28, 2017: Advanced Materials
https://www.readbyqxmd.com/read/29165439/proteomic-signatures-differentiating-bacillus-anthracis-sterne-sporulation-on-soil-relative-to-laboratory-media
#7
D S Wunschel, J R Hutchison, B L Deatherage Kaiser, E D Merkley, B M Hess, A Lin, M G Warner
The process of sporulation is vital for the stability and infectious cycle of Bacillus anthracis. The spore is the infectious form of the organism and therefore relevant to biodefense. While the morphological and molecular events occurring during sporulation have been well studied, the influence of growth medium and temperature on the proteins expressed in sporulated cultures is not well understood. Understanding the features of B. anthracis sporulation specific to natural vs. laboratory production will address an important question in microbial forensics...
November 22, 2017: Analyst
https://www.readbyqxmd.com/read/29091742/biosecurity-implications-for-the-synthesis-of-horsepox-an-orthopoxvirus
#8
Diane DiEuliis, Kavita Berger, Gigi Gronvall
This article examines the biosecurity and biodefense implications resulting from the recent creation of horsepox virus, a noncirculating (extinct) species of orthopoxvirus. Here we examine the technical aspects of the horsepox virus synthesis and conclude that orthopox synthesis experiments currently remain technically challenging-and will continue to be so, even once this work is published in the scientific literature. This limits potential misuse by some types of nefarious actors. We also examine the implications of one stated purpose for the recreation of horsepox virus: the development of a smallpox vaccine...
November 1, 2017: Health Security
https://www.readbyqxmd.com/read/28980459/incorporating-germination-induction-into-decontamination-strategies-for-bacterial-spores
#9
REVIEW
Lara J Kohler, Avery V Quirk, Susan L Welkos, Christopher K Cote
Bacterial spores resist environmental extremes and protect key spore macromolecules until more supportive conditions arise. Spores germinate upon sensing specific molecules, such as nutrients. Germination is regulated by specialized mechanisms, such as structural features of the spore that limit contact with germinants and enzymes that regulate germination. Importantly, germination renders spores more susceptible to inactivating processes such as heat, desiccation, and ultraviolet radiation, to which they are normally refractory...
October 4, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28892451/public-health-preparedness-funding-key-programs-and-trends-from-2001-to-2017
#10
Crystal R Watson, Matthew Watson, Tara Kirk Sell
OBJECTIVES: To evaluate trends in funding over the past 16 years for key federal public health preparedness and response programs at the US Department of Health and Human Services, to improve understanding of federal funding history in this area, and to provide context for future resource allocation decisions for public health preparedness. METHODS: In this 2017 analysis, we examined the funding history of key federal programs critical to public health preparedness by reviewing program budget data collected for our annual examination of federal funding for biodefense and health security programs since fiscal year (FY) 2001...
September 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28876903/label-free-detection-of-bacillus-anthracis-spore-uptake-in-macrophage-cells-using-analytical-optical-force-measurements
#11
Colin G Hebert, Sean Hart, Tomasz A Leski, Alex Terray, Qin Lu
Understanding the interaction between macrophage cells and Bacillus anthracis spores is of significant importance with respect to both anthrax disease progression, spore detection for biodefense, as well as understanding cell clearance in general. While most detection systems rely on specific molecules, such as nucleic acids or proteins and fluorescent labels to identify the target(s) of interest, label-free methods probe changes in intrinsic properties, such as size, refractive index, and morphology, for correlation with a particular biological event...
September 21, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28854255/protein-abundances-can-distinguish-between-naturally-occurring-and-laboratory-strains-of-yersinia-pestis-the-causative-agent-of-plague
#12
Eric D Merkley, Landon H Sego, Andy Lin, Owen P Leiser, Brooke L Deatherage Kaiser, Joshua N Adkins, Paul S Keim, David M Wagner, Helen W Kreuzer
The rapid pace of bacterial evolution enables organisms to adapt to the laboratory environment with repeated passage and thus diverge from naturally-occurring environmental ("wild") strains. Distinguishing wild and laboratory strains is clearly important for biodefense and bioforensics; however, DNA sequence data alone has thus far not provided a clear signature, perhaps due to lack of understanding of how diverse genome changes lead to convergent phenotypes, difficulty in detecting certain types of mutations, or perhaps because some adaptive modifications are epigenetic...
2017: PloS One
https://www.readbyqxmd.com/read/28805472/network-experiences-from-a-cross-sector-biosafety-level-3-laboratory-collaboration-a-swedish-forum-for-biopreparedness-diagnostics
#13
Johanna Thelaus, Anna Lindberg, Susanne Thisted Lambertz, Mona Byström, Mats Forsman, Hans Lindmark, Rickard Knutsson, Viveca Båverud, Andreas Bråve, Pontus Jureen, Annelie Lundin Zumpe, Öjar Melefors
The Swedish Forum for Biopreparedness Diagnostics (FBD) is a network that fosters collaboration among the 4 agencies with responsibility for the laboratory diagnostics of high-consequence pathogens, covering animal health and feed safety, food safety, public health and biodefense, and security. The aim of the network is to strengthen capabilities and capacities for diagnostics at the national biosafety level-3 (BSL-3) laboratories to improve Sweden's biopreparedness, in line with recommendations from the EU and WHO...
July 2017: Health Security
https://www.readbyqxmd.com/read/28798957/holographic-deep-learning-for-rapid-optical-screening-of-anthrax-spores
#14
YoungJu Jo, Sangjin Park, JaeHwang Jung, Jonghee Yoon, Hosung Joo, Min-Hyeok Kim, Suk-Jo Kang, Myung Chul Choi, Sang Yup Lee, YongKeun Park
Establishing early warning systems for anthrax attacks is crucial in biodefense. Despite numerous studies for decades, the limited sensitivity of conventional biochemical methods essentially requires preprocessing steps and thus has limitations to be used in realistic settings of biological warfare. We present an optical method for rapid and label-free screening of Bacillus anthracis spores through the synergistic application of holographic microscopy and deep learning. A deep convolutional neural network is designed to classify holographic images of unlabeled living cells...
August 2017: Science Advances
https://www.readbyqxmd.com/read/28750854/tularemia-vaccine-safety-reactogenicity-take-skin-reactions-and-antibody-responses-following-vaccination-with-a-new-lot-of-the-francisella-tularensis-live-vaccine-strain-a-phase-2-randomized-clinical-trial
#15
Mark J Mulligan, Jack T Stapleton, Wendy A Keitel, Sharon E Frey, Wilbur H Chen, Nadine Rouphael, Srilatha Edupuganti, Allison Beck, Patricia L Winokur, Hana M El Sahly, Shital M Patel, Robert L Atmar, Irene Graham, Edwin Anderson, Samer S El-Kamary, Marcela F Pasetti, Marcelo B Sztein, Heather Hill, Johannes B Goll
BACKGROUND: Tularemia is caused by Francisella tularensis, a gram-negative bacterium that has been weaponized as an aerosol. For protection of personnel conducting biodefense research, the United States Army required clinical evaluation of a new lot of tularemia live vaccine strain manufactured in accordance with Current Good Manufacturing Practices. METHODS: A phase 2 randomized clinical trial compared the new lot (DVC-LVS) to the existing vaccine that has been in use for decades (USAMRIID-LVS)...
July 24, 2017: Vaccine
https://www.readbyqxmd.com/read/28710692/host-factors-involved-in-ebola-virus-replication
#16
Angela L Rasmussen
Ebola virus (EBOV) is a highly pathogenic emerging virus that represents a serious threat to global public health and a major priority for biodefense. The 2014 West African outbreak demonstrated the potential of EBOV to cause an epidemic affecting thousands of people. The severity of disease and high case fatality rate of EBOV is largely due to the host response elicited by the virus. EBOV infection hijacks a number of host pathways to carry out replication and stimulate potent inflammatory responses, while simultaneously subverting the host antiviral immune response...
July 15, 2017: Current Topics in Microbiology and Immunology
https://www.readbyqxmd.com/read/28694806/a-bivalent-anthrax-plague-vaccine-that-can-protect-against-two-tier-1-bioterror-pathogens-bacillus-anthracis-and-yersinia-pestis
#17
Pan Tao, Marthandan Mahalingam, Jingen Zhu, Mahtab Moayeri, Michelle L Kirtley, Eric C Fitts, Jourdan A Andersson, William S Lawrence, Stephen H Leppla, Ashok K Chopra, Venigalla B Rao
Bioterrorism remains as one of the biggest challenges to global security and public health. Since the deadly anthrax attacks of 2001 in the United States, Bacillus anthracis and Yersinia pestis, the causative agents of anthrax and plague, respectively, gained notoriety and were listed by the CDC as Tier-1 biothreat agents. Currently, there is no Food and Drug Administration-approved vaccine against either of these threats for mass vaccination to protect general public, let alone a bivalent vaccine. Here, we report the development of a single recombinant vaccine, a triple antigen consisting of all three target antigens, F1 and V from Y...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28584101/deubiquitinating-enzyme-vcip135-dictates-the-duration-of-botulinum-neurotoxin-type-a-intoxication
#18
Yien Che Tsai, Archana Kotiya, Erkan Kiris, Mei Yang, Sina Bavari, Lino Tessarollo, George A Oyler, Allan M Weissman
Botulism is characterized by flaccid paralysis, which can be caused by intoxication with any of the seven known serotypes of botulinum neurotoxin (BoNT), all of which disrupt synaptic transmission by endoproteolytic cleavage of SNARE proteins. BoNT serotype A (BoNT/A) has the most prolonged or persistent effects, which can last several months, and exerts its effects by specifically cleaving and inactivating SNAP25. A major factor contributing to the persistence of intoxication is the long half-life of the catalytic light chain, which remains enzymatically active months after entry into cells...
June 27, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28495718/biodefense-in-the-21st-century
#19
Gigi Kwik Gronvall
No abstract text is available yet for this article.
May 12, 2017: Science
https://www.readbyqxmd.com/read/28456726/optimization-of-the-production-process-and-characterization-of-the-yeast-expressed-sars-cov-recombinant-receptor-binding-domain-rbd219-n1-a-sars-vaccine-candidate
#20
Wen-Hsiang Chen, Shivali M Chag, Mohan V Poongavanam, Amadeo B Biter, Ebe A Ewere, Wanderson Rezende, Christopher A Seid, Elissa M Hudspeth, Jeroen Pollet, C Patrick McAtee, Ulrich Strych, Maria Elena Bottazzi, Peter J Hotez
From 2002 to 2003, a global pandemic of severe acute respiratory syndrome (SARS) spread to 5 continents and caused 8000 respiratory infections and 800 deaths. To ameliorate the effects of future outbreaks as well as to prepare for biodefense, a process for the production of a recombinant protein vaccine candidate is under development. Previously, we reported the 5 L scale expression and purification of a promising recombinant SARS vaccine candidate, RBD219-N1, the 218-amino acid residue receptor-binding domain (RBD) of SARS coronavirus expressed in yeast-Pichia pastoris X-33...
August 2017: Journal of Pharmaceutical Sciences
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