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https://www.readbyqxmd.com/read/29150637/ml-proteins-from-mesorhizobium-loti-and-mucr-from-brucella-abortus-an-at-rich-core-dna-target-site-and-oligomerization-ability
#1
Ilaria Baglivo, Luciano Pirone, Emilia Maria Pedone, Joshua Edison Pitzer, Lidia Muscariello, Maria Michela Marino, Gaetano Malgieri, Andrea Freschi, Angela Chambery, Roy-Martin Roop Ii, Paolo Vincenzo Pedone
Mesorhizobium loti contains ten genes coding for proteins sharing high amino acid sequence identity with members of the Ros/MucR transcription factor family. Five of these Ros/MucR family members from Mesorhizobium loti (Ml proteins) have been recently structurally and functionally characterized demonstrating that Ml proteins are DNA-binding proteins. However, the DNA-binding studies were performed using the Ros DNA-binding site with the Ml proteins. Currently, there is no evidence as to when the Ml proteins are expressed during the Mesorhizobium lo ti life cycle as well as no information concerning their natural DNA-binding site...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29146514/brucella-related-myocarditis
#2
Sebastian Wendt, Norman Lippmann, Jeanette Fahnert, Arne C Rodloff, Christoph Lübbert
No abstract text is available yet for this article.
November 13, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/29144201/brucella-lipopolysaccharide-and-pathogenicity-the-core-of-the-matter
#3
Judith A Smith
No abstract text is available yet for this article.
November 16, 2017: Virulence
https://www.readbyqxmd.com/read/29142204/sociospatial-structure-explains-marked-variation-in-brucellosis-seroprevalence-in-an-alpine-ibex-population
#4
Pascal Marchand, Pauline Freycon, Jean-Philippe Herbaux, Yvette Game, Carole Toïgo, Emmanuelle Gilot-Fromont, Sophie Rossi, Jean Hars
In a context of (re)emerging infectious diseases with wildlife reservoirs, understanding how animal ecology shapes epidemiology is a key issue, particularly in wild ungulates that share pathogens with domestic herbivores and have similar food requirements. For the first time in Europe, brucellosis (Brucella melitensis), a virulent zoonosis, persisted in an Alpine ibex (Capra ibex) population and was transmitted to cattle and humans. To better understand disease dynamics, we investigated the relationships between the spatial ecology of ibex and the epidemiology of brucellosis...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29125076/-a-14-year-old-syrian-refugee-with-neurobrucellosis
#5
M S W Quaak, H H J Bavelaar, J Berkhout, G J Tuin, E M Bijker
BACKGROUND: Neurobrucellosis is a rare complication of brucellosis, a bacterial zoonotic disease endemic in regions such as the Middle East. It is important to be alert for this imported disease in the Netherlands as well, especially among migrants. CASE DESCRIPTION: A 14-year-old boy from Syria presented with headache, vomiting and weight loss. Brucella melitensis was identified in the cerebrospinal fluid. The patient's condition deteriorated despite antibiotic treatment, particularly neurologically, and imaging revealed a newly developed hydrocephalus...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29113778/quantitative-polymerase-chain-reaction-based-quantification-of-brucella-dna-in-serum-of-pre-and-post-therapeutic-occupationally-exposed-infected-human-population
#6
S Thakur, J S Bedi, R Singh, J P S Gill, A K Arora, Neeraj Kashyap
BACKGROUND: Brucellosis is one of the neglected zoonotic diseases in humans. The serological methods based on antibody detections are unable to detect the effectiveness of treatment in humans as antibodies persist for long time in humans even after therapy. Therefore, we developed qPCR technique to overcome such discrepancy and device a rapid and efficient test for both diagnosis and follow up of the brucellosis affected individuals. METHODS: High risk suspected individuals with positive serology (RBPT, STAT and iELISA) and PCR were mainly analyzed for DNA quantification by qPCR assay...
November 4, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/29110870/evidence-of-ongoing-brucellosis-in-livestock-animals-in-north-west-libya
#7
Huda H Al-Griw, Elfurgani Salem Kraim, Milad E Farhat, Lorraine L Perrett, Adrian M Whatmore
Animal brucellosis is thought to be present in small ruminants, cattle, and camels in Libya, particularly in the west coastal strip. Before the system collapsed due to political unrest in 2011, prevalence of the disease did not exceed 0.2% in cattle, 0.1% in camels, 8.3% in sheep, and 14.8% in goats. The aim of this study was to highlight outbreaks of disease that took place during the 18-month period from November 2014 to April 2016. A total of 1612 serum samples, collected opportunistically from 29 herds in 12 different localities in the northwest region of Libya, were investigated for brucellosis...
December 2017: Journal of Epidemiology and Global Health
https://www.readbyqxmd.com/read/29106986/intraperitoneal-administration-of-a-novel-chimeric-immunogen-rop-elicits-ifn-%C3%AE-and-il-12p70-protective-immune-response-in-balb-c-mice-against-virulent-brucella
#8
Ganesh Tadepalli, Balakrishna Konduru, Harishchandra Sripathy Murali, Harsh Vardhan Batra
Recombinant engineering of immunologically active chimeric protein consisting of Omp19 and P39 domains of B. abortus (rOP), was purified under denaturing conditions upon expression in E. coli BL21 (DE3) and refolded to dynamic form. The immuno-protective efficacy of rOP was evaluated by challenging the BALB/c mice intraperitoneally (I.P) with the infective species of Brucella in the absence or presence of adjuvants, such as Aluminum hydroxide gel (Al), or Freund's Complete Adjuvant (FCA)/Incomplete Freund's Adjuvant (IFA)...
October 26, 2017: Immunology Letters
https://www.readbyqxmd.com/read/29103700/mlva-16-typing-of-brucella-suis-biovar-2-strains-circulating-in-europe
#9
A C Ferreira, M I Corrêa de Sá, R Dias, R Tenreiro
Swine brucellosis due to Brucella suis biovar 2 is an emerging disease in Europe, associated with increase of extensive swine farms and high density of infected wild boars. Since knowledge of predominant circulating strains is a prerequisite for any epidemiological study, accurate molecular typing procedures were applied to a collection of 176 B. suis isolates. By using suis-ladder multiplex PCR and PCR-RFLP analysis of omp2a, omp2b and omp31 genes, five haplotypes were identified among 160 biovar 2 isolates, with haplotypes 2d and 2e restricted to Portugal and Spain and haplotypes 2a, 2b and 2c widespread in Europe (except Portugal)...
October 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/29102107/the-characterization-of-brucella-strains-isolated-from-cattle-in-algeria-reveals-the-existence-of-a-b-abortus-lineage-distinct-from-european-and-sub-saharan-africa-strains
#10
Mammar Khames, Virginie Mick, M Jesús de Miguel, Guillaume Girault, Raquel Conde-Álvarez, Djamel Khelef, Mustapha Oumouna, Ignacio Moriyón, Pilar M Muñoz, Amaia Zúñiga-Ripa
Brucellosis is a zoonosis caused by bacteria of the genus Brucella that causes important economic losses and human suffering worldwide. Brucellosis control requires an understanding of the Brucella species circulating in livestock and humans and, although prevalent in African countries of the Mediterranean basin, data for this area are mostly restricted to isolates obtained from humans and small ruminants. Here, we report the characterization of twenty-four Brucella strains isolated from Algerian cattle. Bruce-ladder multiplex PCR and conventional biotyping showed that Algerian cattle are infected mostly by B...
November 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/29096717/variability-in-the-response-of-canine-and-human-dendritic-cells-stimulated-with-brucella-canis
#11
Myriam Pujol, Francisca Castillo, Carla Alvarez, Camila Rojas, Consuelo Borie, Arturo Ferreira, Rolando Vernal
Brucella canis is a small intracellular Gram-negative bacterium whose primary host is the dog, but it also can cause mild human brucellosis. One of the main causes of an inefficient immune response against other species of Brucella is their interaction with dendritic cells (DCs), which affects antigen presentation and impairs the development of an effective Th1 immune response. This study analysed the cytokine pattern production, by RT-qPCR and ELISA, in human and canine DCs against whole B. canis or its purified LPS...
November 2, 2017: Veterinary Research
https://www.readbyqxmd.com/read/29089045/a-young-female-presenting-with-unilateral-sacroiliitis-following-dengue-virus-infection-a-case-report
#12
W D Jayamali, H M M T B Herath, Aruna Kulatunga
BACKGROUND: Dengue is a common arthropod-borne viral infection in Sri Lanka which is spread by the mosquitos of the genus Aedes. The clinical features of dengue include high-grade fever associated with arthralgia and myalgia. However, dengue virus is not considered an arthritogenic virus. We report a case of a previously healthy young female who presented with imaging-confirmed right-sided sacroiliitis 10 days after developing dengue fever. This is the first reported case that shows a possible link between dengue infection and development of arthritis...
November 1, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29082458/high-level-of-b19-strain-detection-in-brazilian-cattle-semen
#13
M P S Lourencetti, M A Souza, M R Ganda, J P Santos, A Ferreira Júnior, S Miyashiro, A M C Lima
Semen contaminated with microorganisms can disseminate serious diseases including brucellosis. The objectives of this study were to detect Brucella-specific antibodies and Brucella abortus DNA in samples of blood and fresh semen from 100 animals older than 20 months. The samples were collected on farms and in semen collection and processing centers (CCPS). The serum samples were evaluated by Rose Bengal test (RBT). B. abortus DNA was detected by a polymerase chain reaction (PCR) using BAB and IS771 primers...
October 29, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/29082252/multivalent-fusion-dna-vaccine-against-brucella-abortus
#14
Leonardo Gómez, Javiera Llanos, Emilia Escalona, Darwin Sáez, Francisco Álvarez, Raúl Molina, Manuel Flores, Angel Oñate
As an alternative brucellosis prevention method, we evaluated the immunogenicity induced by new multivalent DNA vaccines in BALB/c mice. We constructed the vaccines by fusion of BAB1_0273 and/or BAB1_0278 open reading frames (ORFs) from genomic island 3 (GI-3) and the Brucella abortus 2308 sodC gene with a link based on prolines and alanines (pV273-sod, pV278-sod, and pV273-278-sod, resp.). Results show that immunization with all tested multivalent DNA vaccines induced a specific humoral and cellular immune response...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29081366/central-nervous-system-infections-in-the-absence-of-cerebrospinal-fluid-pleocytosis
#15
Hakan Erdem, Derya Ozturk-Engin, Yasemin Cag, Seniha Senbayrak, Asuman Inan, Esra Kazak, Umit Savasci, Nazif Elaldi, Haluk Vahaboglu, Rodrigo Hasbun
Previous multicenter/multinational studies were evaluated to determine the frequency of the absence of cerebrospinal fluid pleocytosis in patients with central nervous system infections, as well as the clinical impact of this condition. It was found that 18% of neurosyphilis, 7.9% of herpetic meningoencephalitis, 3% of tuberculous meningitis, 1.7% of Brucella meningitis, and 0.2% of pneumococcal meningitis cases did not display cerebrospinal fluid pleocytosis. Most patients were not immunosuppressed. Patients without pleocytosis had a high rate of unfavorable outcomes and thus this condition should not be underestimated...
November 10, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/29076560/an-account-of-evolutionary-specialization-the-abcr-small-rnas-in-the-rhizobiales
#16
REVIEW
Lauren M Sheehan, Clayton C Caswell
The AbcR small RNAs (sRNAs) are a fascinating example of two highly conserved sRNAs that differ tremendously at the functional level amongst organisms. From their transcriptional activation to their regulatory capabilities, the AbcR sRNAs exhibit varying characteristics in three well-studied bacteria belonging to the Rhizobiales order: the plant symbiont Sinorhizobium meliloti, the plant pathogen Agrobacterium tumefaciens, and the animal pathogen Brucella abortus. This review outlines the similarities and differences of the AbcR sRNAs between each of these organisms, and discusses reasons as to why this group of sRNAs has diverged in their genetic organization and regulatory functions across species...
October 27, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/29071584/childhood-brucellosis-in-eastern-india
#17
Devarati Dutta, Anindita Sen, Debkishore Gupta, Prabir Kuila, Debasmita Chatterjee, Sugat Sanyal, Satadal Das
OBJECTIVE: To investigate the presence of childhood brucellosis presenting as PUO (pyrexia of unknown origin) cases in Eastern zone of India. METHODS: Blood samples were collected from PUO patients aged ≤18 y. The main diagnostic tools were STAT, RBPT, ELISA- IgM, IgG and PCR. Although mainly PUO cases were selected for the study, other associated clinical manifestations were also noted. RESULTS: The findings revealed significantly higher percentage of infection in female children (14...
October 26, 2017: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/29067436/brucella-in-raw-milk-prompts-health-warning-in-texas
#18
(no author information available yet)
No abstract text is available yet for this article.
October 24, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/29062811/activation-of-nf-kb-mediated-tnf-induced-antimicrobial-immunity-is-required-for-the-efficient-brucella-abortus-clearance-in-raw-264-7-cells
#19
Huynh T Hop, Alisha W B Reyes, Tran X N Huy, Lauren T Arayan, WonGi Min, Hu J Lee, Man H Rhee, Hong H Chang, Suk Kim
In this study, we explore the regulatory roles of pro-inflammatory cytokine tumor necrosis factor alpha (TNF) in the innate immunity of macrophages against B. abortus infection. We show that infection of macrophage with B. abortus induces marked expression and secretion of TNF which subsequently binds to TNF receptor 1 (TNFR-1) and activates a downstream signaling cascade of the innate immunity. Blocking of TNF signaling resulted in a notable increase of B. abortus survival which was associated with an increase of anti-inflammatory cytokine interleukin 10 (IL-10), a beneficial effector of Brucella survival, as well as remarkable decrease of reactive oxygen species (ROS) and nitric oxide (NO), antibrucella molecules...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/29061850/the-brucella-effector-protein-tcpb-induces-degradation-of-inflammatory-caspases-and-thereby-subverts-noncanonical-inflammasome-activation-in-macrophages
#20
Padmaja Jakka, Swapna Namani, Subathra Murugan, Nivedita Rai, Girish Radhakrishnan
The inflammasome contains intracellular receptors that recognize various pathogen-associated molecular patterns and play crucial roles in innate immune responses to invading pathogens. Noncanonical inflammasome activation is mediated by caspase 4/11, which recognizes intracellular LPS and promotes pyroptosis and secretion of proinflammatory cytokines. Brucella species are infectious intracellular pathogens that replicate in professional and nonprofessional phagocytic cells and subvert immune responses for chronic persistence in the host...
October 23, 2017: Journal of Biological Chemistry
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