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https://www.readbyqxmd.com/read/28418764/disease-surveillance-of-california-ground-squirrels-spermophilus-beecheyi-in-a-drive-through-zoo-in-oregon-usa
#1
Julia Ter Beest, Andrew Cushing, Modesto McClean, Wendy Hsu, Robert Bildfell
Rodents and other small wild mammals are often considered to be pests and vectors for disease in zoos that house small populations of valuable threatened and endangered animals. In 2005, three nonhuman primates at a drive-through zoo in Oregon, USA, acquired tularemia from an unknown source. Due to an abundance of California ground squirrels ( Spermophilus beecheyi ) on zoo grounds, we instituted serosurveillance of this species from July through September 2008 to determine the prevalence of antibodies against pathogens considered to be potentially transmissible to collection animals...
April 18, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28399281/potential-roles-of-pigs-small-ruminants-rodents-and-their-flea-vectors-in-plague-epidemiology-in-sinda-district-eastern-zambia
#2
Stanley S Nyirenda, Bernard M Hang'ombe, Bukheti S Kilonzo, Henry L Kangwa, Evans Mulenga, Ladslav Moonga
A cross-sectional study was conducted in the Eastern part of Zambia that previously reported a plague outbreak. The aim of the study was to evaluate the potential role of pigs, goats, and sheep as sero-surveillance hosts for monitoring plague, and to investigate the flea vectors and potential reservoir hosts to establish the current status of plague endemicity in the district. Serum samples were collected from 96 rodents, 10 shrews, 245 domestic pigs, 232 goats, and 31 sheep, whereas 106 organs were eviscerated from rodents and shrews...
February 4, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28398677/preparing-for-biological-threats-addressing-the-needs-of-pregnant-women
#3
REVIEW
Amelia K Watson, Sascha Ellington, Christina Nelson, Tracee Treadwell, Denise J Jamieson, Dana M Meaney-Delman
Intentional release of infectious agents and biological weapons to cause illness and death has the potential to greatly impact pregnant women and their fetuses. We review what is known about the maternal and fetal effects of seven biological threats: Bacillus anthracis (anthrax); variola virus (smallpox); Clostridium botulinum toxin (botulism); Burkholderia mallei (glanders) and Burkholderia pseudomallei (melioidosis); Yersinia pestis (plague); Francisella tularensis (tularemia); and Rickettsia prowazekii (typhus)...
March 15, 2017: Birth Defects Res
https://www.readbyqxmd.com/read/28395471/-dynamics-of-f1-antibody-responses-to-yersinia-pestis-infection-in-rhombomys-opimus
#4
W W Meng, X H Wang, T Luo, B Li, Q G Wang, R Guo, X Dai, Y J Zhang
Objective: To observe the dynamics of antibody response in great gerbils infected with Yersinia pestis in experiment. Method: A total of 211 great gerbils were captured in the southern margin of plague natural focus of Junggar Basin of the Xinjiang Uygur Autonomous Region in 2011. Among them, there were 167 great gerbils without infection of Y. pestis and 44 great gerbils infected by Y.pestis. Y.pestis No. 2504 was employed for this experimental strain, which was strong toxic strain with negativity in the reduction experiment of nitrate...
April 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28393629/exploring-the-sequence-structure-function-relationship-for-the-intrinsically-disordered-%C3%AE-%C3%AE-crystallin-hahellin
#5
Meng Gao, Fei Yang, Lei Zhang, Zhengding Su, Yongqi Huang
βγ-Crystallins are a superfamily of proteins containing crystallin-type Greek key motifs. Some βγ-crystallin domains have been shown to bind Ca(2+). Hahellin is a newly identified intrinsically disordered βγ-crystallin domain from Hahella chejuensis. It folds into a typical βγ-crystallin structure upon Ca(2+) binding and acts as a Ca(2+)-regulated conformational switch. Besides Hahellin, another two putative βγ-crystallins from Caulobacter crescentus and Yersinia pestis are shown to be partially disordered in their apo-form and undergo large conformational changes upon Ca(2+) binding, although whether they acquire a βγ-crystallin fold is not known...
April 13, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/28384062/fleas-of-black-footed-ferrets-and-their-potential-role-in-the-movement-of-plague
#6
Erica L Mize, Shaun M Grassel, Hugh B Britten
Sylvatic plague is one of the major impediments to the recovery of the black-footed ferret ( Mustela nigripes ) because it decimates their primary prey species, prairie dogs ( Cynomys spp.), and directly causes mortality in ferrets. Fleas are the primary vector of Yersinia pestis , the causative agent of sylvatic plague. The goal of this research was to better understand the flea fauna of ferrets and the factors that might influence flea abundance on ferrets. Fleas from ferrets were tested for Y. pestis in a post hoc assessment to investigate the plausibility that some ferrets could act as incidental transporter hosts of fleas infected with Y...
April 6, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28379405/unique-case-of-disseminated-plague-with-multifocal-osteomyelitis
#7
Leidy Tovar Padua, Amanda Kamali, Hannah Kim, Nicole M Green, Rachel Civen, Benjamin Schwartz, Paul Krogstad, Jaime Deville, Nava Yeganeh, Debra Lugo, Amira Baker, Priya Soni, Catherine Cho, Natalia Svircic, Sarah Dry, Leanne Seeger, Jessica Lloyd, Grace Deukmedjian, Richard Bowen, Gillian Hale, Sherif R Zaki, Paul Mead, Karin Nielsen-Saines
Plague is a disease caused by Yersinia pestis. Septicemic and pneumonic plague have a high mortality rate if untreated. Here we describe the challenges of accurately diagnosing a nonfatal pediatric case of septicemic plague with involvement of multiple organs; to our knowledge, the first documented case of multifocal plague osteomyelitis.
April 4, 2017: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/28377623/a-starvation-induced-regulator-rovm-acts-as-a-switch-for-planktonic-biofilm-state-transition-in-yersinia-pseudotuberculosis
#8
Ruoxi Zhao, Yunhong Song, Qingyun Dai, Yiwen Kang, Junfeng Pan, Lingfang Zhu, Lei Zhang, Yao Wang, Xihui Shen
The transition between the planktonic state and the biofilm-associated state is a key developmental decision for pathogenic bacteria. Biofilm formation by Yersinia pestis is regulated by hmsHFRS genes (β-1, 6-N-acetyl-D-glucosamine synthesis operon) in its flea vector and in vitro. However, the mechanism of biofilm formation in Yersinia pseudotuberculosis remains elusive. In this study, we demonstrate that the LysR-type regulator RovM inversely regulates biofilm formation and motility in Y. pseudotuberculosis by acting as a transcriptional regulator of these two functions...
April 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28339997/straight-run-vs-sex-separate-rearing-for-2-broiler-genetic-lines-part-1-live-production-parameters-carcass-yield-and-feeding-behavior
#9
M J Da Costa, S Zaragoza-Santacruz, T J Frost, J Halley, G M Pesti
The objective of this experiment was to evaluate the effects of raising broilers under sex separate and straight-run conditions for 2 broiler strains. Day-old Ross 308 and Ross 708 chicks (n = 1,344) were separated by sex and placed in 48 pens according to the rearing type: sex separate (28 males or 28 females) or straight-run (14 males + 14 females). There were 3 dietary phases: starter (zero to 17 d), grower (17 to 32 d), and finisher (32 to 48 d). Birds' individual BW and feed intakes were measured at 12, 17, 25, 32, 42, and 48 d to evaluate performance...
March 4, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339876/straight-run-vs-sex-separate-rearing-for-two-broiler-genetic-lines-part-2-economic-analysis-and-processing-advantages
#10
M J Da Costa, G Colson, T J Frost, J Halley, G M Pesti
The objective of this analysis was to evaluate the effects of raising broilers under sex separate and straight-run conditions for 2 broiler genetic lines. One-day-old Ross 308 and Ross 708 chicks (n = 1,344) were sex separated and placed in 48 pens according to rearing type: sex separate (28 males or 28 females) or straight-run (14 males + 14 females). There were 3 dietary phases: starter (zero to 17 d), grower (17 to 32 d), and finisher (32 to 48 d). Bird individual BW and group feed intakes were measured at 12, 17, 25, 32, 42, and 48 d to evaluate performance...
February 23, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339841/nutritive-value-and-the-maximum-inclusion-level-of-pennycress-meal-for-broiler-chickens
#11
R A Alhotan, R L Wang, R A Holser, G M Pesti
Two experiments were conducted to evaluate the nutritive value and maximum safe level (MSL) of pennycress meal (PM) for broiler chicks. In experiment 1, a total of 480 chicks was fed either mash or crumbled diets containing zero, 5, 10, or 15% PM for 18 d (8 diets; 6 replications per diet). In experiment 2, a total of 660 chicks was fed mash diets containing zero, 3, 6, 9, 12, or 15% of either PM or canola meal (CM; a comparative reference) for 14 d (11 diets; 6 replications per diet). Analytical results show that PM is a good source of protein (∼31% CP) and it is very comparable to CM (∼36% CP)...
February 23, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339759/performance-and-anticoccidial-effects-of-nicarbazin-fed-broilers-reared-at-standard-or-reduced-environmental-temperatures
#12
M J da Costa, K W Bafundo, G M Pesti, E A Kimminau, H M Cervantes
A series of 4 floor pen studies was conducted to evaluate the effects of environmental temperature modification on nicarbazin (NIC) responses in broiler chickens raised to 28 d of age. Birds were reared at either standard temperatures (recommended by the primary breeder for ages zero to 28 d) or at 3°C below this level. From placement to 28 d, birds were provided feeds containing zero, 100, or 125 ppm NIC, comprising a 2 × 3 factorial arrangement in each test. Two of the trials were conducted in the presence of an imposed coccidial challenge and 2 were conducted in healthy animals...
February 23, 2017: Poultry Science
https://www.readbyqxmd.com/read/28293231/isolation-of-francisella-tularensis-and-yersinia-pestis-from-blood-cultures-by-plasma-purification-and-immunomagnetic-separation-accelerates-antibiotic-susceptibility-determination
#13
Ronit Aloni-Grinstein, Ofir Schuster, Shmuel Yitzhaki, Moshe Aftalion, Sharon Maoz, Ida Steinberger-Levy, Raphael Ber
The early symptoms of tularemia and plague, which are caused by Francisella tularensis and Yersinia pestis infection, respectively, are common to other illnesses, resulting in a low index of suspicion among clinicians. Moreover, because these diseases can be treated only with antibiotics, rapid isolation of the bacteria and antibiotic susceptibility testing (AST) are preferable. Blood cultures of patients may serve as a source for bacteria isolation. However, due to the slow growth rates of F. tularensis and Y...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28260338/-genotyping-by-crispr-and-regional-distribution-of-yersinia-pestis-in-qinghai-plateau-from-1954-to-2011
#14
X Q Xu, Y Q Xin, X Li, Q W Zhang, X Y Yang, Y Jin, H H Zhao, X Jin, Z Z Qi
Objective: To investigate the CRISPR genotypes (clusters) and regional distribution of Yersinia pestis in Qinghai-plateau. Methods: One hundred and two isolates of Y. pestis isolated from human plague patients, host animal and insect vectors from Qinghai-plateau were selected. The DNAs were extracted using the traditional sodium dodecyl sulfate decomposition and phenol-chloroform method. Three CRISPR loci YPa, YPb and YPc of 102 isolates of Y. pesits were amplified and sequenced, and then the CRISPR sequence analysis was carried out by comparing the latest published CRISPR spacer dictionary and the NCBI database to identify the spacer and spacer array...
March 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28257423/mechanism-study-on-a-plague-outbreak-driven-by-the-construction-of-a-large-reservoir-in-southwest-china-surveillance-from-2000-2015
#15
Xin Wang, Xiaoyu Wei, Zhizhong Song, Mingliu Wang, Jinxiao Xi, Junrong Liang, Yun Liang, Ran Duan, Kecheng Tian, Yong Zhao, Guangpeng Tang, Lv You, Guirong Yang, Xuebin Liu, Yuhuang Chen, Jun Zeng, Shengrong Wu, Shoujun Luo, Gang Qin, Huijing Hao, Huaiqi Jing
BACKGROUND: Plague, a Yersinia pestis infection, is a fatal disease with tremendous transmission capacity. However, the mechanism of how the pathogen stays in a reservoir, circulates and then re-emerges is an enigma. METHODOLOGY/PRINCIPAL FINDINGS: We studied a plague outbreak caused by the construction of a large reservoir in southwest China followed 16-years' surveillance. CONCLUSIONS/SIGNIFICANCE: The results show the prevalence of plague within the natural plague focus is closely related to the stability of local ecology...
March 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28243913/immunogenesis-in-white-mice-infected-with-yersinia-pestis-with-different-plasmid-composition
#16
S V Balakhonov, S A Vityazeva, V I Dubrovina, T P Starovoitova, G B Mukhturgin, T A Ivanova, K M Korytov, S I Kolesnikov
Morphological changes in the immunocompetent organs of white mice with experimental plague infection manifested in activation of the immune response of different degree and pathological process of different severity that depended on the plasmid composition of Y. pestis. Widening of the T-dependent zones in the immune organs of white mice infected with isogenic strains of Y. pestis with different plasmid composition attests to activation of cellular immunity. Our findings allow considering Y. pestis subsp. altaica I-2948/3, Y...
February 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28239773/high-resolution-solid-state-nmr-spectroscopy-of-the-yersinia-pestis-outer-membrane-protein-ail-in-lipid-membranes
#17
Yong Yao, Samit Kumar Dutta, Sang Ho Park, Ratan Rai, L Miya Fujimoto, Andrey A Bobkov, Stanley J Opella, Francesca M Marassi
The outer membrane protein Ail (Adhesion invasion locus) is one of the most abundant proteins on the cell surface of Yersinia pestis during human infection. Its functions are expressed through interactions with a variety of human host proteins, and are essential for microbial virulence. Structures of Ail have been determined by X-ray diffraction and solution NMR spectroscopy, but those samples contained detergents that interfere with functionality, thus, precluding analysis of the structural basis for Ail's biological activity...
March 2017: Journal of Biomolecular NMR
https://www.readbyqxmd.com/read/28236809/methods-for-simulating-nutritional-requirement-and-response-studies-with-all-organisms-to-increase-research-efficiency
#18
Dmitry Vedenov, Rashed A Alhotan, Runlian Wang, Gene M Pesti
Nutritional requirements and responses of all organisms are estimated using various models representing the response to different dietary levels of the nutrient in question. To help nutritionists design experiments for estimating responses and requirements, we developed a simulation workbook using Microsoft Excel. The objective of the present study was to demonstrate the influence of different numbers of nutrient levels, ranges of nutrient levels and replications per nutrient level on the estimates of requirements based on common nutritional response models...
February 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28223382/in-vitro-and-in-vivo-activity-of-omadacycline-against-two-biothreat-pathogens-bacillus-anthracis-and-yersinia-pestis
#19
Judith Steenbergen, S Ken Tanaka, Lynda L Miller, Stephanie A Halasohoris, Jeremy R Hershfield
Introduction: The in vitro activity and in vivo efficacy of omadacycline (OMC) were evaluated against the causative pathogens of anthrax and plague, Bacillus anthracis and Yersinia pestis, respectively.Methods: Minimum inhibitory concentrations (MICs) of OMC were determined by microbroth dilution according to CLSI guidelines for 30 isolates each of Y. pestis and B. anthracis The in vivo efficacy of omadacycline was studied at a range of dosages in both a post exposure prophylaxis (PEP) murine model of anthrax and plague as well as in a delayed treatment model of inhalational anthrax...
February 21, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28221119/pneumonic-plague-transmission-moramanga-madagascar-2015
#20
Beza Ramasindrazana, Voahangy Andrianaivoarimanana, Jean Marius Rakotondramanga, Dawn N Birdsell, Maherisoa Ratsitorahina, Minoarisoa Rajerison
During a pneumonic plague outbreak in Moramanga, Madagascar, we identified 4 confirmed, 1 presumptive, and 9 suspected plague case-patients. Human-to-human transmission among close contacts was high (reproductive number 1.44) and the case fatality rate was 71%. Phylogenetic analysis showed that the Yersinia pestis isolates belonged to group q3, different from the previous outbreak.
March 2017: Emerging Infectious Diseases
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