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https://www.readbyqxmd.com/read/28339707/selection-for-pro-inflammatory-mediators-produces-chickens-more-resistant-to-campylobacter-jejuni
#1
C L Swaggerty, I Y Pevzner, H He, K J Genovese, M H Kogut
Campylobacter spp. are the second leading cause of bacterial-induced foodborne illnesses with an estimated economic burden of nearly $2B USD per year. Most human illness associated with campylobacteriosis is due to infection by C. jejuni and chickens are recognized as a reservoir that could lead to foodborne illness in humans resulting from handling or consuming raw or undercooked chicken. We recently developed a novel breeding strategy based on identification and selection of chickens with an inherently high and low phenotype of pro-inflammatory mediators including IL-6, CXCLi2, and CCLi2, hereafter referred to as the high and low lines, respectively...
February 22, 2017: Poultry Science
https://www.readbyqxmd.com/read/28334487/growing-up-with-perinatal-human-immunodeficiency-virus-a-life-not-expected
#2
Elaine Fay Williams
AIM AND OBJECTIVES: To describe the lived experience of young adults with perinatally acquired HIV (PaHIV). BACKGROUND: The advancement of the highly active antiretroviral treatment, PaHIV-infection has transformed into a chronic lifelong illness that is faced by young adults who grew up with HIV. The known challenges that are associated with HIV are poverty, stigma and social and emotional isolation. DESIGN: This was a qualitative single interview study of a convenience sample of PaHIV-infected young adults receiving care at a large metropolitan pediatric hospital...
March 23, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/28334018/development-of-an-evidence-evaluation-and-synthesis-system-for-drug-drug-interactions-and-its-application-to-a-systematic-review-of-hiv-and-malaria-co-infection
#3
Kay Seden, Sara Gibbons, Catia Marzolini, Jonathan M Schapiro, David M Burger, David J Back, Saye H Khoo
BACKGROUND: In all settings, there are challenges associated with safely treating patients with multimorbidity and polypharmacy. The need to characterise, understand and limit harms resulting from medication use is therefore increasingly important. Drug-drug interactions (DDIs) are prevalent in patients taking antiretrovirals (ARVs) and if unmanaged, may pose considerable risk to treatment outcome. One of the biggest challenges in preventing DDIs is the substantial gap between theory and clinical practice...
2017: PloS One
https://www.readbyqxmd.com/read/28332591/improved-lysis-efficiency-and-immunogenicity-of-salmonella-ghosts-mediated-by-co-expression-of-%C3%AE-phage-holin-endolysin-and-%C3%A9-x174-gene-e
#4
Gayeon Won, Irshad Ahmed Hajam, John Hwa Lee
Bacterial ghosts (BGs) are empty cell envelopes derived from Gram-negative bacteria by bacteriophage ɸX174 gene E mediated lysis. They represent a novel inactivated vaccine platform; however, the practical application of BGs for human vaccines seems to be limited due to the safety concerns on the presence of viable cells in BGs. Therefore, to improve the lysis efficiency of the gene E, we exploited the peptidoglycan hydrolyzing ability of the λ phage holin-endolysins to expedite the process of current BG production system...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28331089/diversity-distribution-and-evolution-of-tomato-viruses-in-china-uncovered-by-small-rna-sequencing
#5
Chenxi Xu, Xuepeng Sun, Angela Taylor, Chen Jiao, Yimin Xu, Xiaofeng Cai, Xiaoli Wang, Chenhui Ge, Guanghui Pan, Quanxi Wang, Zhangjun Fei, Quanhua Wang
Tomato is a major vegetable crop that has tremendous popularity. However, viral disease is still a major factor limiting tomato production. Here we report the tomato virome identified through sequencing small RNAs of 170 field-grown samples collected in China. A total of 22 viruses were identified including both well-documented and newly detected viruses. The tomato viral community is dominated by a few species, and they exhibit polymorphisms and recombination in the genomes with coldspots and hotspots. Most samples were co-infected by multiple viruses and the majority of identified viruses are positive-sense single-stranded RNA viruses...
March 22, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28331080/evaluation-of-the-immune-responses-to-and-cross-protective-efficacy-of-eurasian-h7-avian-influenza-viruses
#6
Hyeok-Il Kwon, Young-Il Kim, Su-Jin Park, Min-Suk Song, Eun-Ha Kim, Se Mi Kim, Young-Jae Si, In-Won Lee, Byung-Min Song, Youn-Jeong Lee, Seok Joong Yun, Wun-Jae Kim, Young Ki Choi
Due to increasing concerns of human infection by various H7 viruses, including recent H7N9 viruses, we evaluated the genetic relationships and the cross-protective efficacies of three different Eurasian H7 avian influenza viruses. Phylogenic and molecular analysis revealed that recent Eurasian H7 viruses can be separated into two different lineages with relatively high amino acid identity within groups (94.8 to 98.8%), and low amino acid identity (90.3 to 92.6 %) between the groups. In vivo immunization with representatives of each group revealed that while group-specific cross-reactivity was induced, cross-reactive HI titers were approximately fourfold lower against heterologous group viruses compared to homologous group viruses...
March 22, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28330282/in-vitro-cytotoxicity-and-antibacterial-activity-of-silver-coated-electrospun-polycaprolactone-gelatine-nanofibrous-scaffolds
#7
Mim Mim Lim, Naznin Sultana
The development of nano-sized scaffolds with antibacterial properties that mimic the architecture of tissue is one of the challenges in tissue engineering. In this study, polycaprolactone (PCL) and PCL/gelatine (Ge) (70:30) nanofibrous scaffolds were fabricated using a less toxic and common solvent, formic acid and an electrospinning technique. Nanofibrous scaffolds were coated with silver (Ag) in different concentrations of silver nitrate (AgNO3) aqueous solution (1.25, 2.5, 5, and 10 %) by using dipping method, drying and followed by ultraviolet (UV) photoreduction...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28329234/revaccination-of-guinea-pigs-with-the-live-attenuated-mycobacterium-tuberculosis-vaccine-mtbvac-improves-bcg-s-protection-against-tuberculosis
#8
Simon Clark, Faye Lanni, Dessislava Marinova, Emma Rayner, Carlos Martin, Ann Williams
Background.: The need for an effective vaccine against human tuberculosis has driven the development of different candidates and vaccination strategies. Novel live attenuated vaccines are being developed that promise greater safety and efficacy than BCG against tuberculosis. We combined BCG with the vaccine MTBVAC to evaluate whether the efficacy of either vaccine would be affected upon revaccination. Methods.: In a well-established guinea pig model of aerosol infection with Mycobacterium tuberculosis, BCG and MTBVAC delivered via various prime-boost combinations or alone were compared...
January 25, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28328962/the-blood-dna-virome-in-8-000-humans
#9
Ahmed Moustafa, Chao Xie, Ewen Kirkness, William Biggs, Emily Wong, Yaron Turpaz, Kenneth Bloom, Eric Delwart, Karen E Nelson, J Craig Venter, Amalio Telenti
The characterization of the blood virome is important for the safety of blood-derived transfusion products, and for the identification of emerging pathogens. We explored non-human sequence data from whole-genome sequencing of blood from 8,240 individuals, none of whom were ascertained for any infectious disease. Viral sequences were extracted from the pool of sequence reads that did not map to the human reference genome. Analyses sifted through close to 1 Petabyte of sequence data and performed 0.5 trillion similarity searches...
March 22, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28327271/novel-anti-staphylococcal-and-anti-biofilm-properties-of-two-anti-malarial-compounds-mmv665953-1-3-chloro-4-fluorophenyl-3-3-4-dichlorophenyl-urea-and-mmv665807-5-chloro-2-hydroxy-n-3-trifluoromethyl-phenyl-benzamide
#10
Marta Zapotoczna, Nabila Boksmati, Sinead Donohue, Baizurina Bahtiar, Ahmad Boland, Hamzah Al Somali, Alysia Cox, Hilary Humphreys, James P O'Gara, Marian Brennan, Eoghan O'Neill
PURPOSE: The treatment of device-related infections is challenging and current anti-microbial compounds have poor anti-biofilm activity. We aimed to identify and characterize novel compounds effective in the eradication of Staphylococcus aureus biofilms. METHODOLOGY: Two novel compounds, MMV665953 {1-(3-chloro-4-fluorophenyl)-3-(3,4-dichlorophenyl)urea} and MMV665807{5-chloro-2-hydroxy-N-[3-(trifluoromethyl)phenyl]benzamide}, effective in killing S. aureus biofilms, were identified by screening of the open access 'malaria box' chemical library...
March 23, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28324595/recent-advances-in-developing-antiviral-therapies-for-respiratory-syncytial-virus
#11
REVIEW
Brian C Shook, Kai Lin
Respiratory syncytial virus (RSV) infection presents a significant health challenge in small children, the elderly and immunocompromised patients. There is still a high unmet medical need among patients with RSV infection, and no specific antiviral therapy is available. The only approved agents are palivizumab, which has to be given prophylactically, mainly in high-risk infants, and ribavirin, which is rarely used due to toxicity concerns and questionable benefits. Efforts to develop new antiviral agents have been hampered by the perceived need for high safety hurdles in pediatric patient populations use and the lack of well-characterized druggable targets...
April 2017: Topics in Current Chemistry (Journal)
https://www.readbyqxmd.com/read/28324594/polymers-in-the-delivery-of-sirna-for-the-treatment-of-virus-infections
#12
REVIEW
Nicholas Reynolds, Megan Dearnley, Tracey M Hinton
Viral diseases remain a major cause of death worldwide. Despite advances in vaccine and antiviral drug technology, each year over three million people die from a range of viral infections. Predominant viruses include human immunodeficiency virus, hepatitis viruses, and gastrointestinal and respiratory viruses. Now more than ever, robust, easily mobilised and cost-effective antiviral strategies are needed to combat both known and emerging disease threats. RNA interference and small interfering (si)RNAs were initially hailed as a "magic bullet", due to their ability to inhibit the synthesis of any protein via the degradation of its complementary messenger RNA sequence...
April 2017: Topics in Current Chemistry (Journal)
https://www.readbyqxmd.com/read/28323213/oral-delivery-of-bacillus-subtilis-spores-expressing-cysteine-protease-of-clonorchis-sinensis-to-grass-carp-ctenopharyngodon-idellus-induces-immune-responses-and-has-no-damage-on-liver-and-intestine-function
#13
Zeli Tang, Hengchang Sun, TingJin Chen, Zhipeng Lin, Hongye Jiang, Xinyi Zhou, Cunbin Shi, Houjun Pan, Ouqin Chang, Pengli Ren, Jinyun Yu, Xuerong Li, Jin Xu, Yan Huang, Xinbing Yu
Clonorchis sinensis (C. sinensis) is a fish-borne trematode. Human can be infected by ingestion of C. sinensis metacercariae parasitized in grass carp (Ctenopharyngodon idella). For induction of effective oral immune responses, spores of Bacillus subtilis (B. subtilis) WB600 were utilized as vehicle to delivery CsCP (cysteine protease of C. sinensis) cooperated with CotC (B.s-CotC-CP), one of coat proteins, to the gastrointestinal tract. After routine culture of 8-12 h in LB medium, B. subtilis containing CotC-CsCP was transferred into the sporulation culture medium...
March 17, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28322309/multiplex-reverse-transcription-loop-mediated-isothermal-amplification-coupled-with-cascade-invasive-reaction-and-nanoparticle-hybridization-for-subtyping-of-influenza-a-virus
#14
Ying Chi, Yiyue Ge, Kangchen Zhao, Bingjie Zou, Bin Liu, Xian Qi, Qian Bian, Zhiyang Shi, Fengcai Zhu, Minghao Zhou, Lunbiao Cui, Chuan Su
Considering the fatal human victims and economic loss caused by influenza virus infection every year, methodologies for rapid and on-site detection of influenza viruses are urgently needed. LAMP is the most commonly used nucleic acid isothermal amplification technology suitable for on-site use. However, for multiplex LAMP, differentiation of the amplicons derived from multiple targets is still challengeable currently. Here we developed a multiplex RT-LAMP assay for simultaneous amplification of three prominent subtypes of influenza viruses (A/H5, A/H7 and 2009A/H1)...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28320526/assessment-and-risk-modeling-of-airborne-enteric-viruses-emitted-from-wastewater-reused-for-irrigation
#15
D Courault, I Albert, S Perelle, A Fraisse, P Renault, A Salemkour, P Amato
Reclamation of wastewater (WW) for irrigation, after treatment represents a challenge that could alleviate pressure on water resources and address the increasing demand for agriculture. However, the risks to human health must be assessed, particularly those related to human enteric viruses that resist standard treatments in most wastewater treatment plants (WWTP). The risks associated with exposure to viral bioaerosols near WWTP and near agricultural plots irrigated with WW are poorly documented. The objectives of this study were to 1) better characterize human enteric viruses found in bioaerosols near a "standard WWTP" and over fields irrigated with treated WW and 2) propose a numeric model to assess the health risk to populations located close to the irrigated areas, with particular attention to norovirus, which is responsible for most viral gastroenteritis in France...
March 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28318966/structural-biology-of-the-zika-virus
#16
REVIEW
Yi Shi, George F Gao
Zika virus (ZIKV), a Flaviviridae family member transmitted to humans by mosquitoes, has emerged as a major health concern. ZIKV infections can cause serious neurological complications in adults, and infection in pregnant women can cause congenital malformations, including fetal and newborn microcephaly. In response to this emerging concern, the structural virology field was quick to explore the features of ZIKV. These efforts have provided significant insights into ZIKV pathogenesis, and have identified targets for drug design...
March 15, 2017: Trends in Biochemical Sciences
https://www.readbyqxmd.com/read/28318747/ultra-fast-quantitation-of-voriconazole-in-human-plasma-by-coated-blade-spray-mass-spectrometry
#17
Marcos Tascon, Germán Augusto Gómez-Ríos, Nathaly Reyes-Garcés, Justen Poole, Ezel Boyacı, Janusz Pawliszyn
Voriconazole is a triazole broad-spectrum antifungal medication often used to treat fungal infections caused by Aspergillus and Fusarium species. One of the main challenges associated with the implementation of this medication is its narrow therapeutic concentration range, demonstrating toxicity at concentrations above 6μg/mL and limited efficacy at concentrations below 2μg/mL. As a result, methodologies which permit the rapid and accurate quantitation of voriconazole in patients are highly desirable. In this work two different approaches based on coated blade spray directly coupled to mass spectrometry (CBS-MS) are introduced; each enabling the quantitation of voriconazole in plasma samples with a simple and fast sample preparation and no chromatographic step...
March 12, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28317811/performance-of-the-xpert-mtb-rif-assay-in-the-diagnosis-of-tuberculosis-in-formalin-fixed-paraffin-embedded-tissues
#18
Pascal Polepole, Mwila Kabwe, Mpanga Kasonde, John Tembo, Aaron Shibemba, Justin O'Grady, Nathan Kapata, Alimuddin Zumla, Matthew Bates
OBJECTIVE/BACKGROUND: Extrapulmonary tuberculosis (EPTB), which accounts for 10%-40% of the global burden of TB, with the highest incidence in Sub-Saharan Africa, is strongly associated with human immunodeficiency virus infection. Diagnosing EPTB is challenging, and recently, there has been a concerted effort to evaluate the latest molecular diagnostics for diagnosing TB in a range of specimen types. The Xpert MTB/RIF assay (Cepheid, Sunnyvale, CA, USA) is one such technology, which simultaneously detects Mycobacterium tuberculosis and rifampicin resistance...
January 2017: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28316432/blood-transfusion-safety-current-status-and-challenges-in-nigeria
#19
REVIEW
John C Aneke, Chide E Okocha
The attainment of blood transfusion safety in Nigeria (and probably the rest of Sub-Saharan Africa) remains an uphill task due to a number of factors, ranging from shortage of blood, poor implementation of blood transfusion guidelines, infrastructural deficits to high prevalence of transfusion-transmissible infections (TTIs), particularly hepatitis and human immune deficiency viruses. We reviewed available data on blood transfusion practices and safety in Nigeria using the PubMed, PubMed Central, Google Scholar, and African Index Medicus search engines, through a combination of word and phrases relevant to the subject...
January 2017: Asian Journal of Transfusion Science
https://www.readbyqxmd.com/read/28314772/two-phylogenetically-and-compartmentally-distinct-cdp-diacylglycerol-synthases-cooperate-for-lipid-biogenesis-in-toxoplasma-gondii
#20
Pengfei Kong, Christoph-Martin Ufermann, Diana Lm Zimmermann, Qing Yin, Xun Suo, J Bernd Helms, Jos F Brouwers, Nishith Gupta
Toxoplasma gondii is among the most prevalent protozoan parasites, which infects a wide range of organisms including one-third of the human population. Its rapid intracellular replication within a vacuole requires efficient synthesis of glycerophospholipids. Cytidine diphosphate-diacylglycerol (CDP-DAG) serves as a major precursor for phospholipid synthesis. Given the peculiarities of lipid biogenesis, understanding the mechanism and physiological importance of CDP-DAG synthesis is particularly relevant in T...
March 17, 2017: Journal of Biological Chemistry
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