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https://www.readbyqxmd.com/read/28638960/comparative-diagnostic-evaluation-of-omp31-gene-based-taqman%C3%A2-real-time-pcr-assay-with-visual-lamp-assay-and-indirect-elisa-for-caprine-brucellosis
#1
Suman Saini, V K Gupta, K Gururaj, D D Singh, R V S Pawaiya, N K Gangwar, A K Mishra, Deepak Dwivedi, Dimple Andani, Ashok Kumar, T K Goswami
Brucellosis is one of the leading causes of abortion in domestic animals that imposes costs on both economy and society. The disease is highly zoonotic and poses risk to animal handlers due to its zoonotic nature. It causes stillbirth, loss of kids and abortion in last term of pregnancy. Reproductive damage includes infertility in does and orchitis and epididymitis in breeding bucks, which result in high financial losses to farmers and the agriculture industry as a whole. It requires highly sensitive and specific assays to diagnose the disease at field level...
June 21, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28636341/biochemical-characterization-of-wbkc-an-n-formyltransferase-from-brucella-melitensis
#2
Alexander S Riegert, Daniel P Chantigian, James B Thoden, Peter A Tipton, Hazel M Holden
It has become increasingly apparent within the last several years that unusual N-formylated sugars are often found on the O-antigens of such Gram negative pathogenic organisms as Francisella tularensis, Campylobacter jejuni, and Providencia alcalifaciens, amongst others. Indeed, in some species of Brucella, for example, the O-antigen contains 1,2-linked 4-formamido-4,6-dideoxy-alpha-D-mannosyl groups. These sugars, often referred to as N-formylperosamine, are synthesized in pathways initiating with GDP-mannose...
June 21, 2017: Biochemistry
https://www.readbyqxmd.com/read/28635524/serology-and-protein-electrophoresis-for-evidence-of-exposure-to-12-mink-pathogens-in-free-ranging-american-mink-neovison-vison-in-argentina
#3
Pablo Eduardo Martino, Luis Ernesto Samartino, Néstor Oscar Stanchi, Nilda Esther Radman, Eduardo Joaquín Parrado
BACKGROUND: Basic pathologic characteristics for farmed minks were previously reported worldwide. However, its status in the wild has not been studied in detail. OBJECTIVE: Serology and electrophoresis were carried out for evidence of exposure to 12 mink pathogens on two different locations. ANIMALS AND METHODS: Serology was done in 87 wild minks by reference techniques against Toxoplasma gondii, Encephalitozoon cuniculi, Neospora caninum, Brucella abortus, Mycobacterium bovis, Leptospira interrogans, canine distemper virus (CDV), canine adenovirus (CAV), canine parvovirus (CPV), rabies virus (RV), Influenza A virus (FLUAV) and Aleutian disease virus (ADV)...
December 2017: Veterinary Quarterly
https://www.readbyqxmd.com/read/28634714/microbial-community-shift-in-a-suspended-stuffing-biological-reactor-with-pre-attached-aerobic-denitrifier
#4
Cong Du, Chongwei Cui, Shan Qiu, Shanwen Xu, Shengnan Shi, Thangavel Sangeetha, Fang Ma
Bioaugmentation is substantially determined by pre-attached communities in biological stuffing systems. However, the inevitable changes of microbial community shift occurred between pre-attached microorganisms on stuffing material and other existing communities in wastewater. Targeting at nitrogen removal in aerobic denitrification reactors, biological augmentation was built by polyurethane supporting material and aerobic denitrification bacteria of Pseudomonas stutzeri strains were primarily colonized. The total nitrogen removal reached a high efficiency of 77 ± 6%, resulting from a relative high nitrate removal (90%) and a low nitrite production of 24 mg l(-1)...
July 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28629726/th2-related-immune-responses-by-the-brucella-abortus-cellular-antigens-malate-dehydrogenase-elongation-factor-and-arginase
#5
Young Bin Im, Soojin Shim, Woo Bin Park, Suk Kim, Han Sang Yoo
Brucellosis is an important zoonotic disease caused by Brucella species. The disease is difficult to control due to the intracellular survival of the bacterium and the lack of precise understanding of pathogenesis. Despite of continuous researches on the pathogenesis of Brucella spp. infection, there is still question on the pathogenesis, especially earlier immune response in the bacterial infection. Malate dehydrogenase (MDH), elongation factor (Tsf), and arginase (RocF), which showed serological reactivity, were purified after gene cloning, and their immune modulating activities were then analyzed in a murine model...
June 16, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28625530/the-emerging-roles-of-sting-in-bacterial-infections
#6
REVIEW
Fabio V Marinho, Sulayman Benmerzoug, Sergio C Oliveira, Bernhard Ryffel, V F J Quesniaux
The STING (Stimulator of Interferon Genes) protein connects microorganism cytosolic sensing with effector functions of the host cell by sensing directly cyclic dinucleotides (CDNs), originating from pathogens or from the host upon DNA recognition. Although STING activation favors effective immune responses against viral infections, its role during bacterial diseases is controversial, ranging from protective to detrimental effects for the host. In this review, we summarize important features of the STING activation pathway and recent highlights about the role of STING in bacterial infections by Chlamydia, Listeria, Francisella, Brucella, Shigella, Salmonella, Streptococcus, and Neisseria genera, with a special focus on mycobacteria...
June 15, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28624927/seroprevalence-and-risk-factors-for-bovine-brucellosis-in-domestic-yaks-bos-grunniens-in-tibet-china
#7
Jiangyong Zeng, Ciren Duoji, Zhenjie Yuan, Silang Yuzhen, Weixing Fan, Lili Tian, Chang Cai, Ian Robertson
A cross-sectional study was conducted in three counties (Damxung, Maizhokunggar and Yadong) in Tibet in April and May 2015. A total of 1,523 yaks owned by 181 herders were randomly selected and blood sampled. Sera were tested using the rose bengal test (RBT) and a competitive immune-enzymatic assay (C-ELISA) and the test results interpreted in parallel. The individual yak prevalence was 2.8% (95% CI 2.0-3.7) with a herd prevalence of 18.2% (95% CI 12.9-24.6). At the individual level, two predictor variables, age and production system, were significantly associated with seropositivity by a binary logistic regression analysis...
June 17, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28622869/brucella-lipopolysaccharide-reinforced-salmonella-delivering-brucella-immunogens-protects-mice-against-virulent-challenge
#8
Jonathan Lalsiamthara, John Hwa Lee
Intracellular pathogen Salmonella exhibits natural infection broadly analogous to Brucella, this phenomenon makes Salmonella a pragmatic choice for an anti-Brucella vaccine delivery platform. In this study we developed and formulated a combination of four attenuated Salmonella Typhimurium live vector strains delivering heterologous Brucella antigens (rBs), namely lumazine synthase, proline racemase subunit A, lipoprotein outer membrane protein-19, and Cu-Zn superoxide dismutase. With an aim to develop a cross-protecting vaccine, Brucella pan-species conserved rBs were selected...
June 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28622856/survey-for-selected-pathogens-in-wild-pigs-sus-scrofa-from-guam-marianna-islands-usa
#9
Christopher A Cleveland, Anthony DeNicola, J P Dubey, Dolores E Hill, Roy D Berghaus, Michael J Yabsley
Pigs (Sus scrofa) were introduced to Guam in the 1600's and are now present in high densities throughout the island. Wild pigs are reservoirs for pathogens of concern to domestic animals and humans. Exposure to porcine parvovirus, transmissible gastroenteritis, and Leptospira interrogans has been documented in domestic swine but data from wild pigs are lacking. The close proximity of humans, domestic animals, and wild pigs, combined with the liberal hunting of wild pigs, results in frequent opportunities for pathogen transmission...
June 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28616790/serological-survey-for-brucella-antibodies-in-donkeys-of-north-eastern-nigeria
#10
A O Tijjani, A U Junaidu, M D Salihu, A A Farouq, O O Faleke, S G Adamu, H I Musa, I U Hambali
A cross-sectional epidemiological study was conducted to determine seroprevalence and risk factors influencing the presence of Brucella antibodies in donkeys of Borno State, north-eastern Nigeria. The study aimed at providing baseline information that may be used in planning a control policy against equine brucellosis. Blood samples were collected from 601 donkeys, comprised of 374 males and 227 females from the six agricultural zones of the state between March 2013 and September 2014. The sera obtained were tested for Brucella antibodies using Rose Bengal plate test (RBPT) and competitive enzyme-linked immunosorbent assay (cELISA)...
June 14, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28616486/goat-farm-management-and-brucella-serological-test-among-goat-keepers-and-livestock-officers-2011-2012-nakhon-si-thammarat-province-southern-thailand
#11
Thanidtha Te-Chaniyom, Alan F Geater, Wandee Kongkaew, Usa Chethanond, Virasakdi Chongsuvivatwong
Brucellosis, a zoonotic disease particularly affecting goats, emerged in Thailand in 2003, resulting in both an occupational hazard for goat keepers and livestock officers, and production losses. Farm management practices have been identified as risk factors associated with Brucella sero-positivity in many studies. Our finding in this study should be considered in order to strengthen the system of biosecurity control in farm animals as one health approach. The objectives of the study were to describe the distribution of potential risk factors by types of goat farms and to document the prevalence of human Brucella sero-positivity among goat keepers and livestock officers in Nakhon Si Thammarat, Thailand...
December 2016: One Health
https://www.readbyqxmd.com/read/28611000/the-sterility-of-selected-operative-sites-during-total-laparoscopic-hysterectomy
#12
Marie E Shockley, Benjamin Beran, Heather Nutting, Katrin Arnolds, Michael L Sprague, Stephen Zimberg
STUDY OBJECTIVE: To describe the type and quantity of bacteria found intraoperatively on the abdomen, vagina, surgical gloves, instrument tips, and uterus at distinct time points during total laparoscopic hysterectomy (TLH). DESIGN: Observational study (Canadian Task Force classification III) SETTING: Academic affiliated hospital PATIENTS: 31 women undergoing TLH for benign indications in 2016 INTERVENTIONS: After antibiotic prophylaxis and chlorhexidine preparation, swabs were collected from the vaginal fornices and abdomen...
June 10, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28609437/shifting-brucellosis-risk-in-livestock-coincides-with-spreading-seroprevalence-in-elk
#13
Angela Brennan, Paul C Cross, Katie Portacci, Brandon M Scurlock, William H Edwards
Tracking and preventing the spillover of disease from wildlife to livestock can be difficult when rare outbreaks occur across large landscapes. In these cases, broad scale ecological studies could help identify risk factors and patterns of risk to inform management and reduce incidence of disease. Between 2002 and 2014, 21 livestock herds in the Greater Yellowstone Area (GYA) were affected by brucellosis, a bacterial disease caused by Brucella abortus, while no affected herds were detected between 1990 and 2001...
2017: PloS One
https://www.readbyqxmd.com/read/28604602/highly-sensitive-bacteriophage-based-detection-of-brucella-abortus-in-mixed-culture-and-spiked-blood
#14
Kirill V Sergueev, Andrey A Filippov, Mikeljon P Nikolich
For decades, bacteriophages (phages) have been used for Brucella species identification in the diagnosis and epidemiology of brucellosis. Traditional Brucella phage typing is a multi-day procedure including the isolation of a pure culture, a step that can take up to three weeks. In this study, we focused on the use of brucellaphages for sensitive detection of the pathogen in clinical and other complex samples, and developed an indirect method of Brucella detection using real-time quantitative PCR monitoring of brucellaphage DNA amplification via replication on live Brucella cells...
June 10, 2017: Viruses
https://www.readbyqxmd.com/read/28604247/brucella-central-carbon-metabolism-an-update
#15
T Barbier, A Zúñiga-Ripa, S Moussa, H Plovier, J F Sternon, L Lázaro-Antón, R Conde-Álvarez, X De Bolle, M Iriarte, I Moriyón, J J Letesson
The brucellae are facultative intracellular pathogens causing brucellosis, an important zoonosis. Here, we review the nutritional, genetic, proteomic and transcriptomic studies on Brucella carbon uptake and central metabolism, information that is needed for a better understanding of Brucella virulence. There is no uniform picture across species but the studies suggest primary and/or secondary transporters for unknown carbohydrates, lactate, glycerol phosphate, erythritol, xylose, ribose, glucose and glucose/galactose, and routes for their incorporation to central metabolism, including an erythritol pathway feeding the pentose phosphate cycle...
June 12, 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28602839/epidemiology-of-brucellosis-in-iran-a-comprehensive-systematic-review-and-meta-analysis-study
#16
REVIEW
Reza Mirnejad, Faramarz Masjedian Jazi, Shayan Mostafaei, Mansour Sedighi
Brucellosis is still one of the most challenging issues for health and the economy in many developing countries such as Iran. Considering the high prevalence of brucellosis, the aim of the current study was to systematically review published data about the annual incidence rate of this infection from different parts of Iran and provide an overall relative frequency (RF) for Iran using meta-analysis. We searched several databases including PubMed, ISI Web of Science, Scopus, google scholar, IranMedex and Iranian Scientific Information Database (SID) by using the following keywords: "Brucella", "Brucellosis", "Malta fever", "Mediterranean fever", "undulant fever", "zoonosis" and "Iran" in Title/Abstract/Keywords fields...
June 7, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28600772/a-closed-tube-loop-mediated-isothermal-amplification-assay-for-the-visual-endpoint-detection-of-brucella-spp-and-mycobacterium-avium-subsp-paratuberculosis
#17
Marcos D Trangoni, Andrea K Gioffré, Silvio L Cravero
LAMP (loop-mediated isothermal amplification) is an isothermal nucleic acid amplification technique that is characterized by its efficiency, rapidity, high yield of final product, robustness, sensitivity, and specificity, with the blueprint that it can be implemented in laboratories of low technological complexity. Despite the conceptual complexity underlying the mechanistic basis for the nucleic acid amplification, the technique is simple to use and the amplification and detection can be carried out in just one step...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28588127/a-6-nucleotide-regulatory-motif-within-the-abcr-small-rnas-of-brucella-abortus-mediates-host-pathogen-interactions
#18
Lauren M Sheehan, Clayton C Caswell
In Brucella abortus, two small RNAs (sRNAs), AbcR1 and AbcR2, are responsible for regulating transcripts encoding ABC-type transport systems. AbcR1 and AbcR2 are required for Brucella virulence, as a double chromosomal deletion of both sRNAs results in attenuation in mice. Although these sRNAs are responsible for targeting transcripts for degradation, the mechanism utilized by the AbcR sRNAs to regulate mRNA in Brucella has not been described. Here, two motifs (M1 and M2) were identified in AbcR1 and AbcR2, and complementary motif sequences were defined in AbcR-regulated transcripts...
June 6, 2017: MBio
https://www.readbyqxmd.com/read/28583150/prevalence-of-pregnancy-relevant-infections-in-a-rural-setting-of-ghana
#19
Fabian Völker, Paul Cooper, Oliver Bader, Angela Uy, Ortrud Zimmermann, Raimond Lugert, Uwe Groß
BACKGROUND: Although infectious diseases still account for a high burden of morbidity and mortality in sub-Saharan Africa, simultaneous investigations on multiple infections affecting maternal and child health are missing. METHODS: We conducted a cross-sectional, single-centre pilot study in a rural area of Ghana to assess the infectiological profile during pregnancy. Screening of 180 expectant mothers was done by vaginal swabs and serology to detect the most common pregnancy-relevant infections...
June 6, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28576116/endovascular-treatment-of-thoracic-aortic-pseudoaneurysm-due-to-brucellosis-a-rare-case-report
#20
Shuai Wang, Qi Wang, Han Liu, Siqiao Sun, Xiwei Sun, Yang Zhang, Zhongying Wang, Zhihua Cheng
BACKGROUND: Arterial damage is a known complication of brucellosis, but the occurrence of a thoracic aortic pseudoaneurysm secondary to brucellosis has not been previously reported. CASE PRESENTATION: A 65-year-old Chinese man presented with a pseudoaneurysm in the descending segment of the thoracic aorta that caused symptoms of chest pain and intermittent fever. He was diagnosed with a thoracic aortic pseudoaneurysm secondary to brucellosis based on a positive brucella serology test (standard-tube agglutination test) and imaging examination (computed tomography angiography)...
June 2, 2017: BMC Infectious Diseases
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