A D-Alanine auxotrophic live vaccine is effective against lethal infection caused by Staphylococcus aureus.

abstract：:Cryptococcus neoformans: (H99W) was serially passaged in the invertebrate wax moth Galleria mellonella fifteen times to study how fungal virulence evolves under selection and whether those adaptations affect virulence. The G. mellonella passaged strain (P15) and the pre-passage H99W strains were used to infect three d...

journal_title：Virulence

authors： Merryman M,Crigler J,Seipelt-Thiemann R,McClelland E

更新日期：2020-12-01 00:00:00

abstract：:The aim of this study was to investigate if the alternative in vivo model Galleria mellonella can be used (i) to determine differences in pathogenicity of amphotericin B (AMB) resistant and susceptible A. terreus isolates, (ii) to evaluate AMB efficacy in vivo (iii) and to correlate outcome to in vitro susceptibility ...

journal_title：Virulence

authors： Maurer E,Browne N,Surlis C,Jukic E,Moser P,Kavanagh K,Lass-Flörl C,Binder U

更新日期：2015-01-01 00:00:00

abstract：:Quorum-sensing (QS), the regulation of bacterial gene expression in response to changes in cell density, involves pathways that synthesize signaling molecules (auto-inducers). The luxS/AI-2-mediated QS system has been identified in both gram-positive and gram-negative bacteria. Bacillus anthracis, the etiological agen...

journal_title：Virulence

authors： Jones MB,Peterson SN,Benn R,Braisted JC,Jarrahi B,Shatzkes K,Ren D,Wood TK,Blaser MJ

更新日期：2010-03-01 00:00:00

abstract：:In the present study, we examined prolonged infection after antigenic co-stimulation by inoculation of the fungus Fonsecaea pedrosoi at two different sites in three mouse strains (BALB/c, Swiss, and C57BL/6). Using this murine model of infection, we showed that antigen induction of infection at more than one site led ...

journal_title：Virulence

authors： Machado AP,Silva MR,Fischman O

更新日期：2010-01-01 00:00:00

abstract：:Cryptococcus neoformans undergoes phenotypical changes during host infection in order to promote persistence and survival. Studies have demonstrated that such adaptations require alterations in gene transcription networks by distinct mechanisms. Drugs such as the histone deacetylases inhibitors (HDACi) Sodium Butyrate...

journal_title：Virulence

authors： Brandão FA,Derengowski LS,Albuquerque P,Nicola AM,Silva-Pereira I,Poças-Fonseca MJ

更新日期：2015-01-01 00:00:00

abstract：:Golden hamsters were inoculated with Schistosoma haematobium cercariae to examine histological lesions at different time points over an 18 month period of infection. Hamsters were sacrificed 26 weeks and 82 weeks after inoculation. The parasite was found in the blood and in the liver of infected animals as was expecte...

journal_title：Virulence

authors： Botelho MC,Oliveira PA,Vieira P,Delgado Mde L,Lourenço L,Lopes C,Machado JC,da Costa JM

更新日期：2010-05-01 00:00:00

abstract：:Novel coronavirus disease 2019 (COVID-19), caused by novel coronavirus SARS-CoV-2, has spread globally since the end of 2019. Asymptomatic carriers are of great concern as they can undermine the interventions to stop the pandemic. However, there is limited information about the characteristics and outcomes of the asym...

journal_title：Virulence

authors： Yu C,Zhou M,Liu Y,Guo T,Ou C,Yang L,Li Y,Li D,Hu X,Shuai L,Wang B,Zou Z

更新日期：2020-12-01 00:00:00

abstract：:Novel approaches to treat carbapenem-resistant Acinetobacter baumannii (CRAB) infections are urgently needed and anti-virulence drugs represent promising alternatives, but our knowledge on potential targets is scarce. We searched for potential A. baumannii virulence factors by whole-genome sequencing-based comparisons...

journal_title：Virulence

authors： Labrador-Herrera G,Pérez-Pulido AJ,Álvarez-Marín R,Casimiro-Soriguer CS,Cebrero-Cangueiro T,Morán-Barrio J,Pachón J,Viale AM,Pachón-Ibáñez ME

更新日期：2020-12-01 00:00:00

abstract：:Th1-polarized host response, mediated by IFN-γ, has been associated with increased severity of periodontal disease as well as control of periodontal infection. The functional polymorphism TBX21-1993T/C (rs4794067) increases the transcriptional activity of the TBX21 gene (essential for Th1 polarization) resulting in a ...

journal_title：Virulence

authors： Cavalla F,Biguetti CC,Colavite PM,Silveira EV,Martins W Jr,Letra A,Trombone AP,Silva RM,Garlet GP

更新日期：2015-01-01 00:00:00

abstract：:Streptococcus agalactiae, or group B Streptococcus (GBS), infects diverse hosts including humans and economically important species such as cattle and fishes. In the context of human health, GBS is a major cause of neonatal infections and an emerging cause of invasive disease in adults and of foodborne disease in Sout...

journal_title：Virulence

authors： Six A,Krajangwong S,Crumlish M,Zadoks RN,Walker D

更新日期：2019-12-01 00:00:00

abstract：:Patients undergoing haematopoietic stem cell transplantation (HSCT) are highly exposed to infectious agents. However, it is not known why certain HSCT recipients rapidly develop severe infections while other, despite similar immunosuppressive conditions, do not. Increasing evidence suggests that such differences may b...

journal_title：Virulence

authors： Wójtowicz A,Bochud PY

更新日期：2016-11-16 00:00:00

abstract：:Bacterial IgA1 proteases are thought to be important virulence factors in respiratory tract infections. These proteolytic enzymes specifically cleave one of several post-proline peptide bonds within the hinge region of human immunoglobulin A1 (IgA1). Human IgA1 was cleaved with an IgA1 protease purified from an isolat...

journal_title：Virulence

authors： Mistry DV,Stockley RA

更新日期：2011-03-01 00:00:00

abstract：:In immune-competent hosts, adenoviruses (Ads) are mild pathogens that cause mainly infections of the respiratory and ocular tracks. The advent of Ad-based gene transfer vectors made the understanding of their interaction with the host cellular machinery an intensive field of research over the last decade. As studies f...

journal_title：Virulence

authors： Henaff D,Salinas S

更新日期：2010-05-01 00:00:00

abstract：:Galleria mellonella (greater wax moth or honeycomb moth) has been introduced as an alternative model to study microbial infections. G. mellonella larvae can be easily and inexpensively obtained in large numbers and are simple to use as they don't require special lab equipment. There are no ethical constraints and thei...

journal_title：Virulence

authors： Tsai CJ,Loh JM,Proft T

更新日期：2016-04-02 00:00:00

abstract：:Many studies have found that abnormalities in the proportion and differentiation of CD4+ T cells (Th cells) are closely related to the pathogenesis of viral myocarditis (VMC). Our previous research indicates that the cholinergic anti-inflammatory pathway (CAP) attenuates the inflammatory response of VMC and downregula...

journal_title：Virulence

authors： De-Pu Z,Li-Sha G,Guang-Yi C,Xiaohong G,Chao X,Cheng Z,Wen-Wu Z,Jia L,Jia-Feng L,Maoping C,Yue-Chun L

更新日期：2018-01-01 00:00:00

abstract：:The emergence of resistance requires alternative methods to treat Candida albicans infections. We evaluated efficacy of the efflux pump inhibitor (EPI) verapamil (VER) with fluconazole (FLC) against FLC-resistant (CaR) and -susceptible C. albicans (CaS). The susceptibility of both strains to VER and FLC was determined...

journal_title：Virulence

authors： Vega-Chacón Y,de Albuquerque MC,Pavarina AC,Goldman GH,Mima EGO

更新日期：2021-12-01 00:00:00

abstract：:Bloodstream infections (BSI) carry a heavy burden of morbidity and mortality in modern internal medicine wards (IMW). These wards are often filled with elderly subjects with several risk factors for BSI, such as multiple comorbidities, polypharmacy, immunosuppression, and indwelling devices. Diagnosing BSI in such a s...

journal_title：Virulence

authors： Del Bono V,Giacobbe DR

更新日期：2016-04-02 00:00:00

abstract：:The virulence behaviors of many Gram-negative bacterial pathogens are governed by quorum-sensing (QS), a hierarchical system of gene regulation that relies on population density by producing and detecting extracellular signaling molecules. Although extensively studied under in vitro conditions, adaptation of QS system...

journal_title：Virulence

authors： Kuang Z,Bennett RC,Lin J,Hao Y,Zhu L,Akinbi HT,Lau GW

更新日期：2020-12-01 00:00:00

abstract：:Trehalose is a disaccharide formed from two glucose molecules. This sugar molecule can be isolated from a range of organisms including bacteria, fungi, plants and invertebrates. Trehalose has a variety of functions including a role as an energy storage molecule, a structural component of glycolipids and plays a role i...

journal_title：Virulence

authors： Vanaporn M,Sarkar-Tyson M,Kovacs-Simon A,Ireland PM,Pumirat P,Korbsrisate S,Titball RW,Butt A

更新日期：2017-01-02 00:00:00

abstract：:In this issue of Virulence, Ban E et al. described the complete sequence of the pEntYN10 plasmid of Escherichia coli O169:H41. The plasmid has 182 coding sequences (CDs); among the identified CDs, some were identified as colonization factors (CFs), one was an enterotoxin and others were insertion sequences (IS). In th...

journal_title：Virulence

authors： Navarro A

更新日期：2015-01-01 00:00:00

abstract：:A new hypervirulent (hypermucoviscous) variant of Klebsiella pneumoniae has emerged. First described in the Asian Pacific Rim, it now increasingly recognized in Western countries. Defining clinical features are the ability to cause serious, life-threatening community-acquired infection in younger healthy hosts, includ...

journal_title：Virulence

authors： Shon AS,Bajwa RP,Russo TA

更新日期：2013-02-15 00:00:00

abstract：:In previous studies we demonstrated that the staphylococcal α-toxin inhibits adhesion and invasion of S. aureus by epithelial cells through binding to α5β1 integrin, a receptor of fibronectin. Moreover, we revealed that a H35A mutation abolishes the cytotoxicity of α-toxin completely. These findings led us to hypothes...

journal_title：Virulence

authors： Yang J,Liang X,Ji Y

更新日期：2013-01-01 00:00:00

abstract：:A number of abundant mobile genetic elements called retrotransposons reverse transcribe RNA to generate DNA for insertion into eukaryotic genomes. Non-long-terminal repeat (non-LTR) retrotransposons represent a major class of retrotransposons, and transposons that move by target-primed reverse transcription lack LTRs ...

journal_title：Virulence

authors： Jiang J,Zhao L,Yan L,Zhang L,Cao Y,Wang Y,Jiang Y,Yan T,Cao Y

更新日期：2014-02-15 00:00:00

abstract：:Highly pathogenic (HP) avian influenza viruses (AIV) evolve from low pathogenic (LP) precursors after circulation in poultry by reassortment and/or single mutations in different gene segments including that encoding NS1. The carboxyl terminal end (CTE) of NS1 exhibits deletions between amino acid 202 and 230 with stil...

journal_title：Virulence

authors： Abdelwhab el-SM,Veits J,Breithaupt A,Gohrbandt S,Ziller M,Teifke JP,Stech J,Mettenleiter TC

更新日期：2016-07-03 00:00:00

abstract：:Aeromonas hydrophila (A. hydrophila) can cause a number of diseases in both human and animals. A. hydrophila-related infections in aquaculture cause severe economic losses every year throughout the world. The emergence of antibiotic resistance that is due to the abuse of antibiotics has limited the application of anti...

journal_title：Virulence

authors： Dong J,Zhang L,Liu Y,Xu N,Zhou S,Yang Y,Yang Q,Ai X

更新日期：2021-12-01 00:00:00

abstract：:Carbapenem-resistant hypervirulent Klebsiella pneumoniae (CR-hvKP) have been reported in recent years across Asian countries and pose a serious threat to public health. Neutrophils represent the first line of defense against numerous infectious pathogens, such as CR-hvKP. Neutrophil extracellular traps (NETs) constitu...

journal_title：Virulence

authors： Jin L,Liu Y,Jing C,Wang R,Wang Q,Wang H

更新日期：2020-12-01 00:00:00

abstract：:Anthrax toxins and capsule are the major virulence factors of Bacillus anthracis. They are encoded by genes located on the plasmids pXO1 and pXO2, respectively. The vaccine strain Pasteur II was produced from high temperature subcultures of B. anthracis, which resulted in virulence attenuation through the loss of the ...

journal_title：Virulence

authors： Liang X,Zhang H,Zhang E,Wei J,Li W,Wang B,Dong S,Zhu J

更新日期：2016-07-03 00:00:00

abstract：:The recent finding that the formation of staphylococcal enterotoxins in food is very different from that in cultures of pure Staphylococcus aureus sheds new light on, and brings into question, traditional microbial risk assessment methods based on planktonic liquid cultures. In fact, most bacteria in food appear to be...

journal_title：Virulence

authors： Schelin J,Wallin-Carlquist N,Cohn MT,Lindqvist R,Barker GC,Rådström P

更新日期：2011-11-01 00:00:00

abstract：:We describe a young woman with profound anemia whose serum iron studies were incongruous with what we expected from iron deficiency anemia. Her high serum iron was not fully explainable until we examined the patient and noticed a large black tattoo on her left flank area. Apparently iron oxide in the ink used for the ...

journal_title：Virulence

authors： Fircanis S,Shields R,Castillo J,Mega A,Schiffman F

更新日期：2012-11-15 00:00:00

abstract：:Human herpesviruses have latency and lytic replication phases in their lifecycle. Proper regulation of herpesviral lifecycle is essential for the evasion of host immune surveillance and development of their related diseases. Recent advancements indicate a role of a novel class of viral non-coding RNAs, microRNA (miRNA...

journal_title：Virulence

authors： Lei X,Bai Z,Ye F,Huang Y,Gao SJ

更新日期：2010-09-01 00:00:00