enterica and lymphocytes play an important role in the co-ordinat

enterica and lymphocytes play an important role in the co-ordination of the host’s immune response, we first characterised buy Quisinostat changes in lymphocyte subpopulations after the infection with the wild type strain and all the SPI mutants. When 3 mice from each group

were Akt inhibitor sacrificed on day 5 post infection i.e. before the onset of fatalities, no differences in the distribution of splenic B-lymphocytes, CD3 T-lymphocytes and γδ T-lymphocytes were observed. Of the Th lymphocytes, the only statistically significant change was the decrease in number of CD4 lymphocytes observed after the infection with the SPI2o mutant when compared with the non-infected mice. CD4 lymphocytes also decreased in number after the infection with the ΔSPI1 mutant, i.e. another mutant in which, similarly to the SPI2o mutant, SPI-1 was absent while SPI-2 was present, although in NSC 683864 this case the decrease did not reach statistical significance (P = 0.0634, see also Table 2). However, we did not investigate this further because we found another lymphocyte subpopulation which exhibited a more pronounced changes which also correlated with the severity of the infection (see below). Table 2 Two-colour flow cytometry of splenic CD3 and Levetiracetam CD19 T- and B-lymphocytes, CD4 and CD8 T-lymphocytes, and γδ T-lymphocytes in mice infected with S.   CD3+19- CD19+3- CD19-3- CD4+8+ CD4+8- CD4-8+ γδT wt 52.5 ± 0.76 41.8 ± 2.07 5.4 ± 1.33* 1.4 ± 0.33 31.1 ± 2.93 14.8 ± 0.28

0.93 ± 0.09 ΔSPI1 57.1 ± 6.50 39.6 ± 5.80 3.2 ± 0.98* 0.9 ± 0.10 24.5 ± 6.26& 16.2 ± 2.05 0.50 ± 0.08 ΔSPI2 50.3 ± 3.77 41.8 ± 2.91 7.7 ± 0.98 1.1 ± 0.13 27.4 ± 1.80 14.5 ± 0.35 0.80 ± 0.22 ΔSPI3 55.1 ± 3.26 40.9 ± 4.37 3.9 ± 1.59* 1.4 ± 0.33 27.1 ± 4.63 16.4 ± 1.19 0.53 ± 0.05 ΔSPI4 56.5 ± 4.24 39.5 ± 3.61 4.1 ± 1.42* 1.3 ± 0.46 26.8 ± 2.80 16.2 ± 1.05 0.67 ± 0.24 ΔSPI5 60.1 ± 5.22 35.8 ± 4.05 3.9 ± 1.25* 1.1 ± 0.21 33.8 ± 1.01 14.9 ± 1.33 0.57 ± 0.05 ΔSPI1-5 55.5 ± 3.07 36.4 ± 2.86 8.0 ± 1.79 2.1 ± 0.41 34.6 ± 3.01 17.2 ± 0.26 0.70 ± 0.08 SPI1 only 55.6 ± 3.78 37.4 ± 2.54 7.1 ± 1.75 0.9 ± 0.26 35.0 ± 3.44 16.1 ± 0.70 0.97 ± 0.05 SPI2 only 43.0 ± 2.50 49.0 ± 6.63 3.8 ± 2.02* 0.6 ± 0.25 23.8 ± 5.80* 14.4 ± 1.16 0.80 ± 0.22 SPI3 only 62.7 ± 4.28 29.9 ± 4.46 7.5 ± 0.49 1.4 ± 0.05 29.2 ± 2.92 18.6 ± 0.87 0.80 ± 0.16 SPI4 only 64.2 ± 4.33 28.

in retail broiler meat may

in retail broiler meat may PXD101 in vivo be underestimated. An optimal methodology that could detect the true number of positive samples and/or the samples with the highest number of Campylobacter spp. would provide a more accurate prevalence for surveillance purposes of these pathogens in retail broiler meat. There is substantial information suggesting that the predominant Campylobacter spp. present in commercial broiler products are C. jejuni and C. coli, a trend that is especially

clear in industrialized nations [27, 28, 36]. Because Campylobacter spp. are inert, very few biochemical tests are used for identification of species. These tests are mainly performed in qualified laboratories studying the taxonomy of

these bacteria where several controls are evaluated in parallel to avoid false identification. Therefore, molecular techniques, mainly the polymerase chain reaction validated by sequencing and Southern blotting, provide simple, robust identification to the species level. In a recent summary of the current Campylobacter spp. worldwide prevalence, C. jejuni was the predominant Campylobacter spp. isolated from retail poultry with the exception of Thailand and South Africa, where the predominant species was C. coli[31]. In some countries, C. coli represents less than 20% of all the Campylobacter isolates found in retail broiler meats [31, 37, 38]; yet, they learn more are at a prevalence that exceeds 20% in live broiler chickens. This difference may be explained by the isolation procedure: direct plating is used to analyze fecal material from live animals, while enrichment is used to analyze retail broiler meat. Both Campylobacter spp. have been found in enriched retail samples [10], but it is not clear if enrichment procedures hinder one species versus the other, or favor the species that contain more vegetative cells at the beginning of the enrichment

procedure. Although Histamine H2 receptor other countries, such as Denmark, have shown a strong seasonal correlation in the prevalence of Campylobacter spp. in broiler flocks and in retail broiler meat [38], there were no seasonal variations detected in C. jejuni. Although statistical differences were seen for C. coli, a larger database is needed to confirm these results. There is no long-term data to assess the changes in the prevalence of Campylobacter spp. present in retail broiler meats. The DAPT nmr results from 2005 clearly show that C. coli was the predominant species. These strains were tested with the same PCR assays as the rest of the data set; therefore, there is no bias in the methodology for identification. These data suggest that the product, the processing plant, the region, and even the season, may impact the prevalence of these pathogens in retail broiler meats. A large diversity in the PFGE profiles of Campylobacter spp.

Microelectron Eng 2002,60(1):71–80

Microelectron Eng 2002,60(1):71–80.CrossRef 3. Ayerdi I, Castano E, Garcia-Alonso A, Gracia J: High-temperature ceramic pressure sensor. Sensors Actuators A 1997,60(1):72–75.CrossRef 4. Leng YX, Sun H, Yang P, Chen JY, Wang J, Wan GJ, Huang N, Tian XB, Wang LP, Chu PK: Biomedical properties of tantalum C646 nitride films synthesized by reactive magnetron sputtering. Thin Solid Films 2001,398–399(2):471–475.CrossRef 5. Mashimo T, Nishida M, Yamaya S, Yamasaki H: Stoichiometric B1-type tantalum nitride and a sintered body thereof and method of synthesizing, the B1-type of tantalum nitride. US Patent April 1994, 5306320:26. 6. Gatterer J, Dufek

G, Etmayer P, Kieffer R: The cubic tantalum mononitride (B 1) and its miscibility with the isotypic mononitrides and monocarbides of the 4a and 5a group metals. Monatch Chem 1975, 106:1137.CrossRef 7. Kieffer P505-15 cell line R, Ettmayer P, Freundhofmeier M, Gatter J: The cubic tantalum mononitride with B1 structure. Monatsh Chem 1971, 102:483.CrossRef 8. Matsumoto O, Konuma M, Kanzaki Y: Formation of cubic tantalum nitride by heating hexagonal tantalum NVP-BSK805 supplier nitride in a nitrogen-argon plasma jet. J Less Common Met 1978, 60:147.CrossRef 9. Mashimo T, Tashiro S, Nishida M, Miyahara K, Eto E:

B1-type and WC-type phase bulk bodies of tantalum nitride prepared by shock and static compressions. Phys B 1997, 239:13.CrossRef 10. Petrunin VF, Sorokin NI, Borovinskaya IP, Pityulin AN: Stability of cubic tantalum nitrides during heat treatment. Powder Metall Met Ceram 1980, 19:62–64. 11. Merzhanov AG, Borovinskaya IP, Volodin YE: Mechanism of combustion for porous metal specimens in nitrogen. DANKAS 1972, 206:905–908. 12. O’Loughlin JL, Wallace MYO10 CH, Knox MS, Kaner RB: Rapid solid-state synthesis of Ta, Cr, and Mo nitrides. Inorg Chem 2001, 40:2240–2245.CrossRef 13. Shi L, Yang ZH, Chen LY, Qian YT: Synthesis and characterization of nanocrystalline TaN. Solid State Commun 2005,133(2):117–120.CrossRef 14. Liu L, Huang K,

Hou J, Zhu H: Structure refinement for tantalum nitrides nanocrystals with various morphologies. Mater Res Bull 2012, 47:1630–1635.CrossRef 15. Fu B, Gao L: Synthesis of nanocrystalline cubic tantalum(III) nitride powders by nitridation–thermal decomposition. J Am Ceram Soc 2005, 88:3519–3521.CrossRef 16. Shiryaev AA: Thermodynamics of SHS processes: advanced approach. Int J SHS 1995, 4:351. 17. Matenoglou GM, Koutsokeras LE, Lekka CE, Abadias G, Camelio S, Evangelakis GA, Kosmidis C, Patsalas P: Optical properties, structural parameters, and bonding of highly textured rocksalt tantalum nitride films. J Appl Phys 2008, 104:124907.CrossRef 18. Holl MB, Kersting M, Pendley BD, Wolczanski PT: Ammonolysis of tantalum alkyls: formation of cubic tantalum nitride and a trimeric nitride, [Cp*MeTaN]3 tris[(.eta.5-pentamethylcyclopentadienyl)(methyl)nitridotantalum]. Inorg Chem 1990,29(8):1518–1526.CrossRef 19.

5 ± 0 5** (0 3;0 8) Salivary Cortisol (μg/dL) 0 305 ± 0 240 (0 21

5 ± 0.5** (0.3;0.8) Salivary Cortisol (μg/dL) 0.305 ± 0.240 (0.212;0.399) 0.321 ± 0.311 (0.217;0.425) 0.016 ± 0.272 (-0.108;0.140) 0.270 ± 0.179 (0.179;0.361) 0.206 ± 0.131 (0.104;0.308) selleck -0.064 ± 0.142 (-0.127;-0.002) RMR (24 h Kcal); n = 26 1290 ± 295 (1103;1477) 1228 ± 277 (1053;1400) -62 ± 184 (-179;55) 1335 ± 213 (1200;1470) 1352 ± 323 (1147;1557) 17 ± 260 (-148;152) RER; n = 26 0.809 ± 0.052 (0.776;0.842) 0.832 ± 0.41 (0.806;0.858) 0.023 ± 0.54 (-0.011;0.057) 0.841 ± 0.59 (0.804;0878) 0.822 ± 0.48 (0.791;0.853) -0.019 ± 0.85 (-0.073;0.035) Data are expressed

as means ± SD (95% confidence interval). Data were analyzed using a treatment X time repeated measures ANOVA * significant treatment X time interaction, p = 0.04 ** significant treatment X time interaction, p = 0.03 † treatment X time interaction, p = 0.08 Experimental Protocol Subjects reported to the laboratory first thing

in the morning following a 10-12 h overnight fast for RMR determination using open circuit indirect calorimetry (n = 26) and body VEGFR inhibitor composition assessment using air displacement via the Bod Pod® (n = 44). Following these tests, a find more saliva sample was taken via passive drool and later analyzed for cortisol content. Subjects were then randomly assigned in a double blind manner to one of two groups: Safflower oil (SO): 4 g/d of safflower oil (Genuine Health Corporation, Toronto, Ontario, CA) administered in 4 enteric-coated capsules (each capsule provided 1 g of cold pressed, high linoleic acid, safflower oil). Fish oil (FO): 4 g/d concentrated fish oil (o3mega extra strength, Genuine Health Corporation, Toronto, Ontario, CA)

administered in 4 enteric-coated capsules (each capsule provided 400 mg EPA and 200 mg DHA). Subjects took 2 capsules with breakfast and 2 capsules with dinner for a 6 wk period. All testing was repeated following 6 wk of supplementation. Body Composition Body composition was assessed by whole body densitometry using air displacement via the Bod Pod® (Life Measurements, Concord, CA). All testing was done in accordance with the manufacturer’s instructions as detailed elsewhere [24]. Briefly, subjects were tested wearing Etofibrate only tight fitting clothing (swimsuit or undergarments) and an acrylic swim cap. The subjects wore the exact same clothing for all testing. Thoracic gas volume was estimated for all subjects using a predictive equation integral to the Bod Pod® software. The calculated value for body density was used in the Siri equation [25] to estimate body composition. A complete body composition measurement was performed twice, and if the body fat % was within 0.05% the two tests were averaged. If the two tests were not within 0.05% agreement, a third test was performed and the average of 3 complete trials was used for all body composition variables. All testing was completed first thing in the morning following a 10 h overnight fast (water intake was allowed).

Host factors such as a previous infection with a heterologous DEN

Host factors such as a previous infection with a heterologous DENV serotype, and virulence appear to play a role in determining disease severity in individuals [5–8]. Environmental factors like vector density, rainfall and temperature may affect the severity of DHF outbreaks [9]. Dengue viruses can be classified into 4 serotypes (DENV-1 to DENV-4) which have Selleck JQEZ5 a mean nucleotide identity of 70% between the serotypes and 95% within the serotypes. Figure 1 Dengue cases reported worldwide from 1955 to 2004. The number of dengue cases as reported in the WHO

DengueNet database [16] from 1955 to 2004. The number of DENV sequences available in the public sequence repositories has been growing steadily and the value of these sequences would be enhanced if exploratory analysis tools for performing preliminary phylogenetic analysis and search for epidemiological, geographic, and medical information were integrated with the database

and convenient interactive visualization was provided. DengueInfo [10] was developed by NITD as a resource for retrieving whole genomes and associated metadata. Similarly, whole genome sequences generated at the Broad Institute can be accessed and queried directly from the institute’s online database [11]. However, neither of these resources provide an integrated interface to analysis and visualization tools nor do they provide RG7420 molecular weight access to all dengue sequences irrespective of origin or length. To meet these needs, we extended the functionality developed by the authors of the NCBI Influenza Virus Resource to the non-segmented dengue virus. Since the DENV genome Janus kinase (JAK) is more than 4 times larger than the largest individual influenza virus segment, multiple sequence alignments could not be calculated on request as is done for influenza virus and are instead pre-calculated offline. The alignment calculation is a three step find more procedure

that first generates multiple protein alignments for the polyproteins derived from complete genome records of each DENV serotype, merges the serotype-specific protein alignments, and then iteratively adds shorter protein sequences. Coding sequence alignments are calculated on demand from the protein alignments. The new NCBI Virus Variation Resource is a flexible tool that can be extended to other viruses, for example West Nile virus. Construction and content Data sources and curation The current Virus Variation Resource includes dengue and influenza virus sequences. The NCBI Influenza Virus Resource was described elsewhere [1, 2]. Here we describe the extension of this resource to include dengue virus sequence data.

7B and 7C, lane 1) The data indicated that the NTUH-S1 strain ex

7B and 7C, lane 1). The data indicated that the NTUH-S1 strain expressed both the Lea and Leb antigens. In addition, the amounts of O-antigen (~34 kDa) in the imp/ostA or msbA single mutant were reduced, and it was especially reduced in the imp/ostA and msbA double mutant. The growth

curves of the wild-type and mutant strains were also examined, and the growth rates of these mutants did not differ from that of the wild-type strain (data not shown). This result demonstrated that both imp/ostA and msbA were involved in the production of LPS. Figure 7 Silver-stained of proteinase-K Dinaciclib clinical trial digested whole cell lysate from H. pylori wild-type and isogenic mutants. (A) Lanes 1–7 were all loaded with 2.5 × 108 proteinase K-digested bacteria (~130 μg total protein). Lane 1, 26695; lane 2, wild-type; lane 3, imp/ostA single mutant

strain; lane 4, imp/ostA complementation strain; lane 5, msbA single mutant strain; lane 6, msbA complementation strain; lane 7,imp/ostA and msbA double mutant strain. Molecular weights of the prestained markers are indicated. (B-C) Immunoblots of LPS from H. pylori with anti-Lea or anti-Leb monoclonal find more antibodies. (B) anti-Lea (1:3000) as the primary antibody and anti-mouse IgG (1:5000) as the secondary antibody, or (C) anti-Leb (1:3000) as the primary antibody and anti-mouse IgG (1:5000) as the secondary antibody. Outer membrane permeability to ethidium Selleck Talazoparib bromide To investigate whether the permeability of the outer membrane was altered in the mutant strains, we measured the fluorescence intensity at a 40-min time point after addition of ethidium bromide and CCCP (Fig. 8A). The fluorescence intensity of the imp/ostA deletion mutant O-methylated flavonoid (1142.73 ± 12.38 relative fluorescence units [RFUs]) was higher than that of the wild-type (891.29 ± 20.62 RFUs, P = 0.0001). The fluorescence intensity of the msbA deletion mutant was also significantly higher than the wild-type (P = 0.00164). These results might due to the increase of outer membrane permeability when imp/ostA or msbA was mutated. Furthermore, the fluorescence intensity of the imp/ostA and msbA double mutant was also significantly

higher than that of wild-type (P = 5.83 × 10-5). Therefore, the increased sensitivity to hydrophobic compounds conferred by imp/ostA and msbA mutations can be explained by the enhanced membrane permeability for the toxic substances moving in. Figure 8 Permeability and efflux of ethidium bromide. (A) Determination of the outer membrane permeability in H. pylori wild-type and isogenic mutants. Each measurement was repeated three times. *, P < 0.05 vs. wild-type, and **, P < 0.001 vs. wild-type. (B) Ethidium bromide accumulation assay. Cells were preloaded with 10 μg/ml ethidium bromide. At the 12-min time point, 10 μM of CCCP was added to the cells suspensions to assess energy-dependent efflux. CCCP was not added to the cells serving as controls (dotted lines).

Three replicates were performed for each

sample Protein

Three replicates were performed for each

sample. Protein identification and database searches The specific immunoreactive protein spots were C59 wnt matched through overlapping images of the blot and gel. The Western blots were matched first with their own Ponceau stain images, then were compared with the silver-stained gel. Subsequently, the spots of interest were excised from the 2DE gels for tryptic in-gel digestion and matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS) on a time-of-flight Ultraflex II mass spectrometer MK-8776 (Bruker Daltonics, Bremen, Germany). The peak lists of each protein spot were searched against the NCBI database using Mascot (v2.1.03; Matrix Sciences, London, UK). The following search parameter criteria were used: significant protein MOWSE score at a p < 0.05; minimum mass accuracy, 100 ppm; 1 missed cleavage site allowed (cysteine carbamidomethylation, acrylamide-modified cysteine, and methionine oxidation); similarity of pI and relative molecular mass specified; and minimum sequence coverage of 15%. Bioinformatics analysis of TR The signal peptide and the probability of TR were predicted using SignalP software (http://​www.​cbs.​dtu.​dk/​services/​SignalP/​). Another subcellular localization prediction

tool, WoLF PSORT (http://​www.​wolfpsort.​org), was used to analyze the amino acid sequences of proteins for prediction of cellular localization. Homology analysis was performed using the BLAST program (http://​www.​ncbi.​nlm.​nih.​gov/​BLASTp and http://​www.​uniprot.​org). MEK162 price Expression, purification, and Western blot analysis of recombinant thioredoxin reductase GliT For RNA preparation, 100 mg of frozen ioxilan mycelium was ground under nitrogen and the whole RNA was extracted using Trizol (Invitrogen, USA). cDNA was generated using AMV reverse transcriptase (Promega, Madison, WI, USA). The TR gene was amplified using the following primers: 5′-CACACATATGTCGATCGGCAAACTAC-3′ and 5′-ACTGAATTCCTATAGCTCCTGATCGAGACG-3′.

The resulting 1005-bp fragments were cloned into the pET-28a (+) expression vector (Novagen, Germany). The TR sequence was 100% identical to the gene of A. fumigatus strain Af293. Then, the recombinant His6-TR was expressed in E. coli BL21 competent cells, and purified using a TALON metal affinity resin (Clontech, Japan). Fractions containing the purified TR were pooled, dialyzed against 0.1 M phosphate buffered saline (PBS; pH 7.2), and stored at -70°C. Protein identity of the recombinant TR was confirmed by MALDI-TOF MS. Western blot of the purified recombinant proteins was carried out as described earlier. Monoclonal mouse anti-HIS antibody (diluted 1:4000), the serum samples from six patients with proven IA, and pooled sera from healthy individuals (diluted 1:1000) were used as primary antibodies. HRP-rabbit anti-mouse IgG (1:5000) and HRP-goat anti-human IgG (diluted 1:2000) were used as secondary antibodies.

002 for 24 h infection, Student’s t-test) Infected macrophages a

002 for 24 h infection, Student’s t-test). Infected macrophages also appear to at least transiently increase the LIP more than uninfected cells, as evidenced by the amplitude of fluorescence quenching (Figure 4A, 4B, and 4C; p = 0.003 for 2 h infection, p = 0.001 for 24 h infection, Student’s t-test). This observation is consistent with an increased number of TfRs on the cell surface, allowing an increased uptake at a faster rate of iron into the cell. The iron measured here is at least temporarily available as soluble iron and should thus be readily available for uptake by Francisella. In contrast, SHP099 in vitro when we measured the LIP of macrophages whose TfR1 expression has been suppressed by siRNA, we found a decreased LIP

(Figure 4C; p = 0.001) and a decreased rate of iron uptake (Figure 4D; p = 0.001). Figure 4 Transferrin-mediated delivery of iron increases the labile iron pool in Francisella -infected

cells selleck kinase inhibitor more efficiently than in uninfected cells. RAW macrophages were infected with Francisella LVS for 2 h (A) or 24 h (B) or left uninfected (control) and then loaded with Calcein-AM. The cell suspension was maintained at 37°C in a fluorometer. After stabilization of the fluorescence signal, holo-transferrin was added to the solution (t = 0) and the fluorescence signal recorded at one-second intervals. A decrease in the fluorescence indicates chelation of incoming iron Phospholipase D1 with calcein, the amount of which is proportional to the slope and amplitude of the fluorescence signal. Results of triplicate measurements from triplicate experiments (n = 9) as described in A and B were analyzed for total amount of iron acquired as measured by arbitrary fluorescence units (C) and velocity of iron acquisition as measured by the

change of fluorescence over time (D). Total iron and rate of iron uptake was also analyzed for macrophages whose TfR1 expression was suppressed by siRNA (siRNA TfR1 in Figure 4C and 4D). Measurements were made 24 h after transfection of uninfected macrophages (RAW264.7) with siRNA. All Values are given as means +/- 1 standard error of mean (SEM). Labile iron pool https://www.selleckchem.com/products/gsk3326595-epz015938.html during infection with Francisella or Salmonella While increased expression of TfR1 leads to an increase in the labile iron pool when exposed to iron-loaded transferrin, the overall labile iron pool (LIP) of the host cell can be affected in many different ways during infection. We therefore assessed the LIP during infection with Francisella by using the calcein method as described earlier [29] and compared it to the LIP during infection with Salmonella. After two hours of infection with Francisella and Salmonella there was a 10-25% increase in the labile iron pool (Figure 5; p = 0.01 for Francisella, p = 0.002 for Salmonella). Over the next twenty-two hours, macrophages infected with Francisella maintained an increased iron pool (Figure 5; p = 0.008 for 8 h, p = 0.002 for 16 h, and p = 0.

The coagulase

The coagulase BIX 1294 mouse plasma test (Remel, Lenexa, KS, USA) was performed on organisms that exhibited typical staphylococcal colony morphology, to allow for discrimination of S. aureus from CoNS. Susceptibility testing for methicillin resistance and other antibiotic resistance phenotypes was carried out by the Kirby-Bauer methods [44]. MIC of methicillin was determined by E-test kits (AB Biodisk, Solna, Sweden). The results were categorized according to CLSI standards. Reference strains used as

controls were S. aureus (ATCC 33591), S. aureus (ATCC 25923), and S. epidermidis (ATCC 12228) (Table 1). GDC0449 primer design for pentaplex PCR assay The 16S rRNA of Staphylococcus genus, and gene sequences for femA, mecA and lukS of S. aureus were obtained from GenBank [45], for DNA sequence alignment and primer design. The ClustalW program in Vector NTI version 9.0 software (Invitrogen,

Carlsbad, CA, USA) was used to align the DNA sequences. The conserved and non-conserved regions of the DNA sequence alignments were visualized using GeneDoc software [46]. Based on the conserved regions of the alignment, specific primer pairs were designed to amplify the Staphylococcus genus. Specific primers of S. aureus species were designed based on the non-conserved regions of femA gene sequences. Methicillin-resistance specific primers were CX 5461 designed based on the conserved regions of mecA DNA sequences. For the PVL-encoding gene, specific primers were designed based on lukS gene. The five primer pairs (Research Biolabs, KL, Malaysia) were designed in such a way that the PCR products ranged from 151 to 759 bp. The specificity of the designed primers was checked using BLAST, which is available at the GenBank website [47]. The

primer sequences for the five genes and expected PCR product sizes are shown in Table 2. A primer pair based on hemM gene was designed (759 bp) and was used as an internal control (Table 2). Table 2 Sequences of primers Protein kinase N1 used for the pentaplex PCR. Gene Primer Name 5′———————————3′ Gen Bank accession number Product size Internal IC-F AGCAGCGTCCATTGTGAGA AF227752 759 bp control hem M IC-R ATTCTCAGATATGTGTGG     16S rRNA 16S rRNA-F GCAAGCGTTATCCGGATTT D83356 597 bp   16S rRNA-R CTTAATGATGGCAACTAAGC     fem A femA-F CGATCCATATTTACCATATCA CP000255 450 bp   femA-R ATCACGCTCTTCGTTTAGTT     mec A mecA-F ACGAGTAGATGCTCAATATAA NC_003923M 293 bp   mecA-R CTTAGTTCTTTAGCGATTGC     luk S lukS-F CAGGAGGTAATGGTTCATTT AB186917 151 bp   lukS-R ATGTCCAGACATTTTACCTAA     Pentaplex PCR assay DNA-contamination is a major problem encountered in the routine use of the PCR; we followed all contamination prevention measures in the PCR daily work to avoid pre and post-PCR contamination [48]. The monoplex PCR for each gene and the pentaplex PCR assay were standardized using genomic DNA extracted from reference Staphylococcus spp. A mixture of DNAs from two reference strains, namely S.

Gastroenterology 2011, 141:98–105 PubMedCrossRef 13 Cole BF, Bar

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