Search results for "bacteri"

Frequency, phenotype and function of Mycobacterium tuberculosis-specific CD8 T cells in patients with active tuberculosis and in individuals with lat…

2008

HLA-E-restricted CD8+ T lymphocytes as a new player in the adaptive immune response to Mycobacterium tuberculosis

Analysis of the global CD8 T cell response during Mycobacterium tuberculosis infection

2013

Isolamento di Mycobacterium bolletii e Mycobacterium porcinum da pazienti immuno-compromessi

2009

Expansion of intracellular IFN-γ positive lymphocytes during Mycoplasma agalactiae infection in sheep.

2010

Abstract A method to assess the expansion of antigen-specific intracellular IFN-γ positive T cell subsets during the infection will be helpful for a better understanding of mycoplasmal infections physiopathology in the sheep. We analysed the percentage of antigen-specific lymphocytes positive for intracellular IFN-γ during the infection of sheep with Mycoplasma agalactiae by culturing peripheral blood mononuclear cells of infected or uninfected animals with irradiated M. agalactiae . The expansion of antigen-specific IFN-γ positive lymphocytes in infected sheep was initially sustained by CD4 + T cells at day 15 after infection, when antigen specific IgG start to be detectable, followed by C…

AIF-1 and RNASET2 are involved in the inflammatory response in the Mediterranean mussel Mytilus galloprovincialis following Vibrio infection

2022

Filter-feeding bivalves, such as the Mytilus species, are exposed to different types of bacteria in the surrounding waters, in particular of the Vibrio genus. Mussels lack an adaptive immune system and hemocytes can recognize pathogen-associated molecular patterns (PAMPs) via pattern recognition receptors (PRRs) to activate intracellular signaling pathways to trigger the antimicrobial effectors synthesis. Among the areas of bivalve immunity that deserve study include the role of hemocyte subpopulations. Since little information are available on immune responses at the tissue level to human pathogenic vibrios commonly detected in coastal waters involved in seafood-borne diseases, in this wor…

A positional scanning combinatorial library of peptoids as a source of biological active molecules: identification of antimicrobials

2003

9 pages, 4 figures, 2 schemes, 3 tables.-- PMID: 12959560 [PubMed].-- Printed version published in issue Sep-Oct 2003.-- Supporting information available at: http://pubs.acs.org/doi/suppl/10.1021/cc020075u

Epidemic spread of ST1-MRSA-IVa in a neonatal intensive care unit, Italy

2012

Abstract Background Community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) has recently emerged as an important pathogen in neonatal intensive care units (NICUs). The purposes of this study were to characterize methicillin-resistant isolates from an outbreak in a NICU, to examine the genetic traits and clonality of CA-MRSA, and to review the characteristics and outcomes of the neonatal cases and investigate the routes of entry and transmission of the MRSA outbreak strain in the NICU under study. Methods The study NICU practiced an active surveillance program for multidrug-resistant organisms, including weekly cultures for detection of MRSA from nasal swabs among all the …

Plasmid-mediated QnrS2 determinant from a clinical Aeromonas veronii isolate.

2008

The main objective of this study was to determine the prevalence of the Qnr determinants in clinical and environmental Aeromonas spp. A total of 52 Aeromonas sp. isolates identified by biochemical methods (5), 25 isolated from natural waters (1) and 27 isolated from clinical samples from hospitals in Valencia, Spain, were tested for quinolone resistance by the disk diffusion method (4) (nalidixic acid, 30 μg; oxolinic acid, 2 μg; flumequine, 30 μg; ciprofloxacin, 5 μg; and levofloxacin, 5 μg). Among the studied isolates, 27 showed resistance to nalidixic acid and susceptibility to ciprofloxacin, 24 isolates were susceptible to both nalidixic acid and ciprofloxacin, and only 1, the A. veroni…

Listeria phage and phage tail induction triggered by components of bacterial-growth media (phosphate, LiCl, nalidixic acid and acriflavine)

2015

ABSTRACT The detection of Listeria monocytogenes from food is currently carried out using a double enrichment. For the ISO methodology, this double enrichment is performed using half-Fraser and Fraser broths, in which the overgrowth of L. innocua can occur in samples where both species are present. In this study, we analyzed the induction of phages and phage tails of Listeria spp. in these media and in two brain heart infusion (BHI) broths (BHIM [bioMérieux] and BHIK [Biokar]) to identify putative effectors. It appears that Na 2 HPO 4 at concentrations ranging from 1 to 40 g/liter with an initial pH of 7.5 can induce phage or phage tail production of Listeria spp., especially with 10 g/lite…