quorum sensing and virulence in foodborne pathogens

... place in the order of minutes to hours and involves many hormones, including arginine vasopressin, angiotensin II, natriuretic peptides, vasoactive intestinal peptide, urotensin II, insulin and ... (within h) induced by hyperosmotic stress, indicating a role of this mitogenactivated protein kinase kinase kinase interacting protein for osmosensory signal transduction in fish 14-3-3 proteins ... mitogen-activated protein kinase kinase kinase interacting protein (TAK binding protein ¼ TAB 2), as an IEG during hyperosmotic stress in tilapia gill epithelium [26] This gene is transiently and very rapidly...

Ngày tải lên: 18/02/2014, 16:20

... coarse intra-frame sensing as a pre-stage for fine inter-frame sensing [35] Accordingly, intra-frame sensing is performed when the SU system is quiet and its performance depends on the sample size in ... forms, types, and sizes In general, the sensing information combination at the SBS can be categorized as soft combination and hard combination techniques Soft Combination: In soft combination, the ... years of research in spectrum sensing and sharing in cognitive radio Lu Lu∗ , Xiangwei Zhou, Uzoma Onunkwo and Geoffrey Ye Li School of Electrical and Computer Engineering, Georgia Institute of Technology,...

Ngày tải lên: 21/06/2014, 17:20

... Innovative Approaches to Spectrum Selection, Sensing, and Sharing in Cognitive Radio Networks by Chittabrata Ghosh B.Tech (Kalyani University, India) 2000 M.S (Indian Institute of ... Abstract Innovative Approaches to Spectrum Selection, Sensing, and Sharing in Cognitive Radio Networks In a cognitive radio network (CRN), bands of a spectrum are shared by licensed (primary) and ... shown in Figure 1.4 The adaptive spectrum sensing as one of the CR function shown in Figure 1.4 implies that the spectrum sensing is performed selectively using a-priori data information obtained...

Ngày tải lên: 30/10/2014, 20:09

... is independent and identically distributed (i.i.d), and with zero mean and variance of N0 2.1.1 Binary Hypothesis Testing Spectrum sensing is a problem of binary hypothesis testing: determining ... cooperative sensing The increasing number of cooperative sensing reports alleviates the degrading performance caused by fading, but it also intensifies the contention on the reporting channel and prolongs ... control protocol in conjunction with the spectrum sensing protocol design In particular, physical layer parameters (frame duration and sensing time) and random access probability in the MAC layer...

Ngày tải lên: 10/09/2015, 08:28

... temperature, requirement is increasingly stringent on temperature sensing and control in multi-zone semiconductor thermal processing Resistance Temperature Detectors (RTD’s) installed in a multi-zone bake-plate ... MPC and LQG controllers were used in [34] and [36] respectively MPC operates by solving a constrained optimization problem online, in real-time, in order to decide how to update the control inputs ... within to provide temperature measurements Heating in the presence of sensor bias in such temperature sensitive processes inevitably causes processing defects and reduces wafer yield To maintain...

Ngày tải lên: 14/09/2015, 08:43

... interaction involving force includes interaction between an object being manipulated and the manipulator, and interaction between an object and its environment (e.g., substrate), etc The sensing and ... organized as follows: Chapter introduces the background of micro-force sensing and control in micromanipulation Three main problems in micro-force sensing and control are raised In order to solve these ... micro-force sensing and control in micromanipulation should be investigated The research reported in this thesis focuses on three main problems 1.2.1 Three problems on micro-force sensing and control...

Ngày tải lên: 14/09/2015, 11:47

... cells, indicating that in C albicans budding from random positions is not favored In a certain perspective, it is an interesting finding because the polarized growth from random positions during ... these findings to true hyphal growth remains unclear 1.3.4 Septin ring and morphological control Besides the polarization of actin cables and patches in the budding yeast, septin ring, consisting ... mother cell and growing bud (Longtine and Bi, 2003) Septin ring is composed of an evolutionarily conserved family of proteins known as septins including Cdc3, Cdc10, Cdc11, and Cdc12 Septins are...

Ngày tải lên: 16/09/2015, 15:55

... (Brencic and Winans, 2005) In the nopaline-type strain C58, the opine that controls traR is agrocinopines and its receptor is AccR In absence of agrocinopines, AccR binds to its target DNA region and ... Introduction 1.1 Quorum sensing in bacteria 1.1.1 Concept of quorum sensing Traditionally, bacterial cells are considered as self-contained, self-sufficient and independent individuals, lacking ... significance of quorum quenching 11 1.3 Quorum sensing and quorum quenching in A tumefaciens 14 1.3.1 The bacteriology of A tumefaciens 14 1.3.2 Quorum sensing of A tumefaciens...

Ngày tải lên: 14/09/2015, 12:07

... restricted ones in a study comparing antibiotic utilisation before and after NARP in a single centre from Turkey revealed 125.3% increase in the use of 2nd and 3rd generation oral cephalosporins [27] ... Antimicrobial Management: Cost and Resistance In: Mandell GL, Bennett JE, Dolin R, eds Principles and Practice of Infectious Diseases, 6th ed Philadelphia: Churchill Livingstone Inc; 2005: 611-619 McGowan ... therapy in acute uncomplicated urinary tract infections and fluoroquinolone resistance: a prospective observational study Ann Clin Microbiol Antimicrob 2009; 24(8):27 Austin DJ, Kristinsson KG, Anderson...

Ngày tải lên: 25/10/2012, 11:00

... timevarying channel condition [12] In most cases, CR device has to postpone all its transmission during spectrum sensing Thus, sensing activity should be scheduled accordingly and sensing period ... Sensing period considerations in fading environment for multimedia delivery in cognitive Ultra Wideband system,” in Proceedings of IEEE International Conference on Signal and Image Processing ... perform spectrum sensing cooperatively and the sensing information exchanged between neighbors is expected to have a better chance of detecting PU compared to individual sensing A cooperative...

Ngày tải lên: 21/06/2014, 11:20

... Goats and Horses, pp.925-931 Balliere Tindal, Londone, 1989 [2] Cheung, A K Investigation of pseudorabies virus DNA and RNA in trigeminal ganglia and tonsil tissues of latently infected swine Am ... Laboratories, Inc., Maine, USA) The VN test was performed in 96-well microtitration plates using PK-15 cells as the indicator Serum samples were heat-inactivated at 56℃ for 30 minutes prior to performing ... and PRRSV, respectively Assessment of Replication and Virulence of Attenuated Pseudorabies Virus in Swine 63 Viru s iso latio n an d qu a n titatio n The presence and level of PRV in swabs and...

Ngày tải lên: 07/08/2014, 15:20

... replaced to maintain the mycelium and to avoid desiccation of inoculum In 1994, the inoculations were located in rings per tree at 1.00 and 1.50 m above ground Within each ring, the inoculations ... 0.0859 in 1994; P = 0.0839 in 1995), although isolate 171 in 1994 and isolates 1151, 384 and 439 in 1995 caused no blue stain while other isolates (1431, 951 and 1311 in 1994; 683 and 1214 in 1995) ... naturally in isolates belonging to the same species and originating from the same forest This interesting result could be of great practical use for screening and comparing fungal virulence of...

Ngày tải lên: 08/08/2014, 01:22

... produced by B cinerea both in vitro and in vivo and inhibited infection caused by B cinerea (146) C Involvement of Fungal Enzymes in Induced Resistance To protect themselves against diseases, ... endochitinase Thus, a combination of the Cry protein and an endochitinase could result in effective insect control in transgenic systems in which the Cry protein is not expressed in a crystalline ... usefulness of introducing chitinase-encoding genes into B thuringiensis to increase the toxicity of the bacterium toward target insects Thus, chitinase-encoding genes from chitinolytic strains of Aeromonas...

Ngày tải lên: 11/08/2014, 15:20

... epithelial cells and the extracellular matrix proteins fibronectin and laminin [9], and Rck has recently also been reported to mediate a zipper-like internalization of S Enteritidis into cells in vitro ... Nsereko VL, Morgavi DP, Selinger LB, Rode LM, Beauchemin KA: Evidence of quorum sensing in the rumen ecosystem: detection of N-acyl homoserine lactone autoinducers in ruminal contents Can J Microbiol ... et al.: Salmonella Typhimurium invasion of HEp-2 epithelial cells in vitro is increased by N-acylhomoserine lactone quorum sensing signals Acta Veterinaria Scandinavica 2011 53:44 Submit your...

Ngày tải lên: 12/08/2014, 18:22

... subsections Quorum sensing and non -quorum sensing biofilms” and “Mixed biofilms” were repeated, but with consideration of this biological process Quorum sensing and non-QS biofilms QS and non-QS ... Future work in biofilm and quorum sensing modelling is required to continue to investigate how biofilms respond to quorum sensing induction Page 26 of 29 Frederick et al Theoretical Biology and Medical ... sensing regulation has been demonstrated In [50], quorum sensing was found to regulate alginate production in Pseudomonas syringae Alginate is an important component of EPS, and without quorum sensing, ...

Ngày tải lên: 13/08/2014, 16:20

... such as nafcillin or oxacillin, maintained by vancomycin, and inhibited, even at sub-inhibitory concentrations, by proteinsynthesis inhibitors, including clindamycin, rifampin, and linezolid [36,37] ... Quinupristin/dalfopristin Quinuprisitn/dalfoprisitin is a combination of two streptogramins, quinupristin and dalfopristin (in a ratio of 30:70 w/w), that inhibit different sites in protein synthesis Each individual ... for clinical use in the US Failed to demonstrate non-inferiority against linezolid for treatment of complicated skin and skin structure infection CPK, creatine phosphokinase However, increasing...

Ngày tải lên: 13/08/2014, 18:22

... demonstrated to antagonise quorum sensing in P aeruginosa, resulting in diminished virulence, biofilm formation and oxidative stress response [13] Significantly, inhibition of quorum sensing reduces pathogenicity ... or inhibition of quorum sensing is more important in reducing mortality experimentally Lesprit and colleagues described the important role of P aeruginosa quorum sensing in rat pulmonary infection ... and rosacea [9] Clearly immunomodulatory effects could be important in altering mortality in CAP, but these drugs also have direct effects on bacteria through inhibiting quorum sensing Quorum sensing...

Ngày tải lên: 13/08/2014, 21:20

... fischeri LuxR protein consists of two domains, the amino-terminal domain involved in binding to the AHL and the 13 carboxyl-terminal domain involved in multimerization and DNA binding (Shadel et ... bacterial quorum sensing The phenomenon of quorum sensing, originally termed autoinduction, was initially discovered in the luminescent marine bacteria Vibrio fischeri and Vibrio harveyi in the ... 1  INTRODUCTION AND LITERATURE REVIEW 1  1.1  QUORUM SENSING IN BACTERIA 1  1.1.1  Discovery of bacterial quorum sensing 2  1.1.2  Quorum sensing is conserved in...

Ngày tải lên: 11/09/2015, 16:05

... of oxidizing or reducing gases by means of changes in the conductivity of the sensing layer The theory of MOX gas sensing is described in further detail here Pure and perfectly crystalline metal ... their assistance in obtaining the resources required for experiments; Jayson Koh for providing sound advice and technical support, and for making his stay in CICFAR II a comfortable and enjoyable ... for working together in CICFAR and reducing the stress of working on the project by having meals and breaks together; Parents Mr and Mrs See for providing strong moral support and lastly; Friends...

Ngày tải lên: 06/10/2015, 20:43

... c) Pointers and values a) Value types and reference types in simple terms is nothing but conversion of a value type into a reference type a) Casting c) Unboxing d) Overriding b) Boxing ... for statement’s syntax is incorrect using System; class Test { static void Main() { int @Main; int[] Static= new int[3]; @Main =100*Static[1]; Console.WriteLine(@Main); } } What will be the output ... A.F Init B B.F b) Init A Init B A.F B.F c) d) A.F Init B Init A A.F A.F B.F Init B Init A 89 //.Inconsistent accessibility: base class 'Test' is less //accessible than class 'Q3' lỗi dòng using...

Ngày tải lên: 21/08/2012, 15:55