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Showing "More Than Coli Illnesses Linked Romaine Lettuce" PubMed Articles 76–100 of 5,700+

Prevalence and characterization of virulence genes in Escherichia coli isolated from piglets suffering post-weaning diarrhoea in Shandong Province, China.

The present study was performed to investigate the prevalence and characteristics of virulence genes in Escherichia coli (E. coli) isolated from piglets suffering post-weaning diarrhoea (PWD) in Shandong Province, China. The standard bacteriological method was used to isolate and identify E. coli, and then multiplex polymerase chain reaction (mPCR) was performed to determine virulence genes in E. coli. Among the 300 isolates, 166 (55.3%) harboured at least one virulence gene. Among the 166 isolates, 155 ...

Time trend of prevalence and susceptibility to nitrofurantoin of urinary MDR Escherichia coli from outpatients.

To assess the time trend of the prevalence of urinary MDR Escherichia coli in Belgian outpatients (2005 versus 2011-12), the antibiotic susceptibility of urinary MDR E. coli, and the time trend of non-susceptibility to nitrofurantoin, i.e. first-line treatment for uncomplicated urinary tract infections (UTIs), of urinary MDR E. coli (2005 versus 2011-12).

Progesterone inhibits inflammatory response in E.coli- or LPS-Stimulated bovine endometrial epithelial cells by NF-κB and MAPK pathways.

Progesterone suppresses the innate immune function of bovine endometrium, making the uterus susceptible to bacterial infection. The bovine endometrial epithelial cells (BEEC) are the first line of defense against bacteria, such as Escherichia coli (E.coli) that causes inflammation of endometrium through the recognition of lipopolysaccharide (LPS). The aim of this study was to investigate the effect of progesterone on the inflammatory response and its potential mechanism using E.coli- or LPS-induced BEEC. Co...

'Ready Mixed', improved nucleic acid amplification assays for the detection of Escherichia coli DNA and RNA.

The selective amplification of E. coli nucleic acid sequences could be used for the early warning of faecal contamination in environmental samples. Modified assays for E. coli DNA and RNA markers are presented with improved integrity and performance over existing methods, and demonstrated using 'ready mixed', preserved reagent mixtures.

Identification of diarrheagenic Escherichia coli by a new multiplex PCR assay and capillary electrophoresis.

Diarrheagenic Escherichia coli (DEC) is a set of the most common pathogens causing diarrhea. DEC strains are classified into five pathotypes based on the possession of different virulence genes: enteropathogenic E. coli (EPEC), enterohemorrhagic E. coli (EHEC) or Shiga toxin-producing E. coli (STEC), enteroaggregative E. coli (EAEC), enterotoxigenic E. coli (ETEC), and enteroinvasive E. coli (EIEC). The development of an easy-to-use method to detect the specific virulence genes and distinguish the pathotype...

Determinants of clinical, functional and personal recovery for people with schizophrenia and other severe mental illnesses: A cross-sectional analysis.

To analyze the relationships between insight, medication adherence, addiction, coping and social support-components of Illness Management and Recovery (IMR)-as determinants of clinical, functional and personal recovery in patients with schizophrenia and other severe mental illnesses. Our rationale lay in the interrelations between these concepts suggested in a conceptual framework of IMR.

Characterization of auto-agglutinating and non-typeable uropathogenic Escherichia coli strains.

Uropathogenic Escherichia coli (UPEC) are the main etiological agent of urinary tract infections (UTIs). Association between different serotypes and UTIs is known, however, some strains are incapable to be serotyped. The aim of this work was to study bthe phenotypical and genotypical characteristics of 113 non-typeable (NT) and auto-agglutinating (AA) E. coli strains, isolated from UTIs in children and adults.

A PopZ-Linked Apical Recruitment Assay for Studying Protein-Protein Interactions in the Bacterial Cell Envelope.

Most bacteria are surrounded by a complex cell envelope. As with many biological processes, studies of envelope assembly have benefited from cell-based assays for detecting protein-protein interactions. These assays use simple readouts and lack a protein purification requirement, making them ideal for early-stage investigations. The most widely used two-hybrid interaction assay for proteins involved in envelope biogenesis is based on the reconstitution of adenylate cyclase activity from a split enzyme. Beca...

Rapid analysis of Escherichia coli O157:H7 using isothermal recombinase polymerase amplification combined with triple-labeled nucleotide probes.

Rapid analytical methods are urgently needed to evaluate Escherichia coli (E. coli) O157:H7 in food. In this work, a novel recombinase polymerase amplification (RPA)-based lateral flow dipstick (LFD) method was developed to detect E. coli. Briefly, suitable primers and probes were designed and screened. Then, RPA reaction parameters, including volume, time, and temperature, were optimized. The specificity and sensitivity of RPA-LFD were analyzed, and a contaminated milk sample was used to test the detection...

Dehydroepiandrosterone alleviates E. Coli O157:H7-induced inflammation by preventing the activation of p38 MAPK and NF-κB pathways in mice peritoneal macrophages.

As an important metabolite in cholesterol metabolism, dehydroepiandrosterone (DHEA) can modulate the immune function in animals and humans, but the underlying mechanism is still unclear. The present study investigated the effect and mechanism of DHEA's anti-inflammatory action in primary mice peritoneal macrophages infected with E. coli O157:H7. The finding showed that DHEA improved the phagocytic ability in E. coli O157:H7-infected macrophages. DHEA inhibited the cytokines (including tumor necrosis factor-...

Transient Membrane-Linked FtsZ Assemblies Precede Z-Ring Formation in Escherichia coli.

During the early stages of cytokinesis, FtsZ protofilaments form a ring-like structure, the Z-ring, in most bacterial species. This cytoskeletal scaffold recruits downstream proteins essential for septal cell wall synthesis. Despite progress in understanding the dynamic nature of the Z-ring and its role in coordinating septal cell wall synthesis, the early stages of protofilament formation and subsequent assembly into the Z-ring are still not understood. Here we investigate a sequence of assembly steps that...

Production of 5-aminolevulinic acid from glutamate by overexpressing HemA1 and pgr7 from Arabidopsis thaliana in Escherichia coli.

The important metabolic intermediate 5-aminolevulinic acid (ALA) is useful for cancer treatment or plant growth regulation and has consequently received much attention. In this study, we introduced the HemA1 and pgr7 genes from the higher plant Arabidopsis thaliana into recombinant Escherichia coli to overproduce extracellular 5-aminolevulinic acid via the C5 pathway. In the E. coli BL21 (DE3) strain background, the ALA concentration of the strain expressing both HemA1 and pgr7 was the highest and reached 3...

Construction of meanings during life-limiting illnesses and its impacts on palliative care: ethnographic study in an African context.

knowledge about how people make meaning in cancer, palliative and end of life care is particularly lacking in Africa, yet it can provide insights into strategies for improving palliative care (PC). This study explored ways in which cancer patients, their families and healthcare professionals construct meaning of their life-limiting illnesses and how this impact on provision and use of PC in a Nigerian hospital.

Obstructive Sleep Apnea and Systemic Hypertension: Gut Dysbiosis as the Mediator?

Obstructive sleep apnea (OSA) and systemic hypertension (SH) are common and interrelated diseases. It is estimated that approximately 75% of treatment-resistant hypertension cases have an underlying OSA. Exploration of the gut microbiome is a new advance in medicine that has been linked to many comorbid illnesses, including SH and OSA. Here, we will review the literature in SH and gut dysbiosis, OSA and gut dysbiosis, and whether gut dysbiosis is common in both conditions.

Fast fluorometric enumeration of E. coli using passive chip.

In this report, a passive microfluidic chip design was developed for fast and sensitive fluorometric determination of Escherichia coli (E. coli) based on sandwich immunoassay. Initially, magnetic nanoparticles (MNPs) and chitosan modified mercaptopropionic acid capped cadmium telluride (CdTe) quantum dots (QDs) were functionalized with E.coli specific antibody to form a sandwich immunoassay with the E. coli. The magnetic separation and preconcentration of the E.coli from the sample solution was performed in...

Proteomic analysis of Escherichia coli detergent-resistant membranes (DRM).

Membrane microdomains or lipid rafts compartmentalize cellular processes by laterally organizing membrane components. Such sub-membrane structures were mainly described in eukaryotic cells, but, recently, also in bacteria. Here, the protein content of lipid rafts in Escherichia coli was explored by mass spectrometry analyses of Detergent Resistant Membranes (DRM). We report that at least three of the four E. coli flotillin homologous proteins were found to reside in DRM, along with 77 more proteins. Moreove...

Molecular identification of blaCTX-M and blaTEM genes among multi-drug resistant Enteropathogenic Escherichia coli isolated from children.

In this cross sectional study (June 2016 to June 2017), we studied the isolation and molecular characterization of multi-drug resistant Escherichia coli (MDR-E. coli) from children suffering from diarrhea. For this purpose, a total of 100 fecal samples were collected with the consent of the parents/ guardians on a prescribed form. The bacterial isolation was done by employing conventional and standard microbiological procedures. Subsequently, all the isolates were identified on the basis of biochemical test...

Antimicrobial susceptibility among urinary Escherichia coli isolates from female outpatients: age-related differences.

Urinary tract infections (UTIs) are common problems in women, and important reason for visiting primary care physicians, resulting in substantial financial burden to community. The aim of this study was to determine the resistance rates of E. coli to commonly prescribed antimicrobial drugs for community-acquired UTIs in women and to establish the association between age and resistance to antibiotics among isolates of E. coli from urine.

Bloodstream infections caused by Escherichia coli in onco-haematological patients: Risk factors and mortality in an Italian prospective survey.

Bloodstream infections (BSIs) remain life-threatening complications in the clinical course of patients with haematological malignancies (HM) and Escherichia coli represent one of the most frequent cause of such infections. In this study, we aimed to describe risk factors for resistance to third generation cephalosporins and prognostic factors, including the impact of third generation cephalosporins resistance, in patients with HM and BSIs caused by E. coli. Three hundred forty-two cases of E. coli BSIs were...

Pharmaceutical exposure changed antibiotic resistance genes and bacterial communities in soil-surface- and overhead-irrigated greenhouse lettuce.

New classes of emerging contaminants such as pharmaceuticals, antibiotic resistant bacteria (ARB), and antibiotic resistance genes (ARGs) have received increasing attention due to rapid increases of their abundance in agroecosystems. As food consumption is a direct exposure pathway of pharmaceuticals, ARB, and ARGs to humans, it is important to understand changes of bacterial communities and ARG profiles in food crops produced with contaminated soils and waters. This study examined the level and type of ARG...

Presence of Heavy Metal Resistance Genes in Escherichia coli and Salmonella, and Analysis of Resistance Gene Structure in E. coli E308.

Little attention has been paid to heavy metal resistance (HMR) to pathogenic bacteria with the wide use of heavy metals as feed additives in food animals. Therefore, present study was constructed to investigate the presence of HMR in Escherichia coli and Salmonella, and its correlation with disinfectant resistance genes (DRGs) and antibiotic resistance genes (ARGs).

Antibiogram, virulotyping and genetic diversity of Escherichia coli and Salmonella serovars isolated from diarrheic calves and calf handlers.

Antimicrobial resistance profile of E. coli and Salmonella serovars isolated from diarrheic calves and handlers in Egypt is unknown due to the absence of monitoring. Therefore, this study aimed to determine the virulence, genetic and antimicrobial resistance profiles of E. coli and Salmonella serovars associated with diarrhea in calves and handlers in intensive dairy farms in Egypt. A total of 36 bacterial strains (20 E. coli and 16 Salmonella) were isolated from fecal samples of 80 diarrheic Holstein dairy...

From courts to markets: New evidence on enforcement of pharmaceutical bans in India.

Regulatory enforcement of product safety standards given health concerns, whether it is in romaine lettuce, smartphones or cars, is emerging to be a challenge for global public health. This is particularly true for developing economies with fragile institutions. In this context, recent studies on Indian pharmaceutical markets provide evidence suggesting that the sector is a hub for substandard quality of medicines. Departing from these prior studies which use randomly collected samples, we reinvestigate thi...

Metabolic output defines Escherichia coli as a health-promoting microbe against intestinal Pseudomonas aeruginosa.

Gut microbiota acts as a barrier against intestinal pathogens, but species-specific protection of the host from infection remains relatively unexplored. Although lactobacilli and bifidobacteria produce beneficial lactic and short-chain fatty acids in the mammalian gut, the significance of intestinal Escherichia coli producing these acids is debatable. Taking a Koch's postulates approach in reverse, we define Escherichia coli as health-promoting for naturally colonizing the gut of healthy mice and protecting...

Heterologous Biosynthesis of Type II Polyketide Products Using E. coli.

The heterologous biosynthesis of complex natural products has enabled access to polyketide, nonribosomal peptide, isoprenoid, and other compounds with wide-spanning societal value. Though several surrogate host systems exist, Escherichia coli is often a preferred choice due to its rapid growth kinetics and extensive molecular biology protocols. However, a persistent challenge to the utilization of E. coli has been the successful in vivo reconstitution of Type II polyketide synthase (PKS) systems. In particu...

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