Publications by authors named "DUDLEY E"

S. enterica isolates (n = 78) obtained from the vegetable supply chain (farms, distribution centers, markets) in two Cambodian provinces (Siem Reap, Battambang) were sequenced and analyzed. In silico identification of serotypes and detection of antimicrobial resistance genes was performed using SISTR and ABRicate, respectively.

View Article and Find Full Text PDF

We isolated Salmonella enterica serovar Senftenberg in raw wastewater from 2 Pennsylvania wastewater treatment facilities during June 2022. Whole genome sequencing revealed 4 isolates separated by <4 single nucleotide polymorphisms from S. enterica Senftenberg in a cluster from the 2022 nationwide outbreak linked to contaminated peanut butter.

View Article and Find Full Text PDF

Introduction: Evidence suggests an increasing misuse of veterinary medicines by humans. This study aims to analyse Adverse Events (AEs) associated with selected veterinary products using the Food and Drug Administration Adverse Events Reporting System (FAERS).

Methods: A descriptive pharmacovigilance analysis was conducted on AEs related to 21 drugs approved for human and/or animal use.

View Article and Find Full Text PDF

Rising antimicrobial resistance (AMR) in serotypes host-adapted to cattle is of increasing concern to the beef and dairy industry. The bulk of the existing literature focuses on AMR post-slaughter. In comparison, the understanding of AMR in among pre-harvest cattle is still limited, particularly in Texas, which ranks top five in beef and dairy exports in the United States; inherently, the health of Texas cattle has nationwide implications for the health of the United States beef and dairy industry.

View Article and Find Full Text PDF

Unlabelled: Shiga toxinproducing (STEC) are major foodborne pathogens that result in thousands of hospitalizations each year in the United States. Cattle, the natural reservoir, harbor STEC asymptomatically at the recto-anal junction (RAJ). The molecular mechanisms that allow STEC and non-STEC to adhere to the RAJ are not fully understood, in part because most adherence studies utilize human cell culture models.

View Article and Find Full Text PDF

Non-typhoidal is a common cause of gastroenteritis worldwide, but current non-typhoidal surveillance is suboptimal. Here, we evaluated the utility of wastewater monitoring to enhance traditional surveillance for this foodborne pathogen. In June 2022, we tested raw sewage collected twice a week from two treatment plants in central Pennsylvania for non-typhoidal and characterized isolates using whole-genome sequencing.

View Article and Find Full Text PDF

Introduction: The abuse of veterinary drugs has emerged as a concerning trend, with global fatalities on the rise. Our understanding of this phenomenon remains limited. This study aims to identify the veterinary drugs being misused, the reasons behind their misuse, and how they are obtained.

View Article and Find Full Text PDF

Campylobacteriosis outbreaks have previously been linked to dairy foods. While the genetic diversity of Campylobacter is well understood in high-income countries, it is largely unknown in low-income countries, such as Ethiopia. This study therefore aimed to conduct the first genomic characterization of Campylobacter isolates from the Ethiopian dairy supply chain to aid in future epidemiological studies.

View Article and Find Full Text PDF

Unlabelled: Enterotoxigenic (ETEC) are significant pathogen in both cattle and pigs, causing diarrhea in these animals and leading to economic losses in the livestock industry. Understanding the dissimilarity in genotype, antimicrobial resistance (AMR), and virulence between bovine and swine ETEC is crucial for development of targeted preventive and therapeutic approaches for livestock. However, a comprehensive study on this area remains lacking.

View Article and Find Full Text PDF

Purpose: To determine the effect of taurine supplementation on sweating and core temperature responses, including the transition from compensable to uncompensable heat stress, during prolonged low-intensity exercise of a fixed-heat production (~ 200W/m) in hot conditions (37.5 °C), at both fixed and incremental vapour-pressure.

Methods: Fifteen females (n = 3) and males (n = 12; 27 ± 5 years, 78 ± 9 kg, O 50.

View Article and Find Full Text PDF
Article Synopsis
  • * Researchers examined 15 L. monocytogenes and 55 L. innocua samples from various dairy supply chains in Ethiopia using whole-genome sequencing to understand their genetic diversity and relationships.
  • * The study identified 3 L. monocytogenes and 12 L. innocua sequence types, finding both region-specific and widespread strains, with low genetic variation among L. monocytogenes indicating possible selection pressures in the dairy supply chain.
View Article and Find Full Text PDF

Antimicrobial treatment in livestock can contribute to the emergence and spread of antimicrobial-resistant (AMR) microorganisms. Despite substantial surveillance of AMR bacteria in the continental United States, the prevalence of these AMR organisms in U.S.

View Article and Find Full Text PDF

Receptor Interacting Protein Kinase 1 (RIPK1) and caspase-8 (Casp8) jointly orchestrate apoptosis, a key mechanism for eliminating developing T cells which have autoreactive or improperly arranged T cell receptors. Mutations in the scaffolding domain of gene have been identified in humans with autoinflammatory diseases like Cleavage Resistant RIPK1 Induced Autoinflammatory (CRIA) and Inflammatory Bowel Disease. RIPK1 protein also contributes to conventional T cell differentiation and peripheral T cell homeostasis through its scaffolding domain in a cell death independent context.

View Article and Find Full Text PDF

Antimicrobial resistance (AMR) trends in 114 generic Escherichia coli isolated from channel catfish and related fish species were investigated in this study. Of these, 45 isolates were from commercial-sized channel catfish harvested from fishponds in Alabama, while 69 isolates were from Siluriformes products, accessed from the U.S.

View Article and Find Full Text PDF
Article Synopsis
  • Retrieval practice is an effective teaching method, and PeerWise was used in a first-year biochemistry course to integrate this approach into assessments.
  • Engagement with PeerWise, which involves creating and answering peer-generated multiple choice questions, showed a weak-to-moderate positive correlation with student performance in coursework and exams.
  • Student feedback highlighted mixed opinions, with many appreciating its usefulness for learning, while a minority criticized it for lack of quality control and relevance to the course content.
View Article and Find Full Text PDF

Within-host evolution of bacterial pathogens can lead to host-associated variants of the same species or serovar. Identification and characterization of closely related variants from diverse host species are crucial to public health and host-pathogen adaptation research. However, the work remained largely underexplored at a strain level until the advent of whole-genome sequencing (WGS).

View Article and Find Full Text PDF

Objectives: This study aimed to assess the antimicrobial resistance profile, virulence potential, and genetic characterization of avian pathogenic Escherichia coli (APEC) that cause colibacillosis in poultry.

Methods: Antibiotic susceptibility testing (AST) was measured via the Kirby-Bauer disc diffusion method against 27 commonly used antibiotics. Phylogrouping, virulence-associated gene detection, and hybrid strain detection via multiplex polymerase chain reaction (PCR) and genetic diversity were analysed via ERIC-PCR fingertyping method.

View Article and Find Full Text PDF

A series of benzyl, phenyl guanidine, and aminoguandine hydrazone derivatives was designed and in vitro antibacterial activities against two different bacterial strains ( and ) were determined. Several compounds showed potent inhibitory activity against the bacterial strains evaluated, with minimal inhibitory concentration (MIC) values in the low µg/mL range. Of all guanidine derivatives, 3-[2-chloro-3-(trifluoromethyl)]-benzyloxy derivative showed the best potency with MICs of 0.

View Article and Find Full Text PDF

Sixteen Escherichia coli isolates were obtained from fecal matter from a beef farm in Puerto Rico. Isolates were whole-genome sequenced for characterization, including pathotype characterization, virulence, and plasmid identification. The results of the draft genomes identified potential pathogenic E.

View Article and Find Full Text PDF

Obesity is accompanied by inflammation in adipose tissue, impaired glucose tolerance, and changes in adipose leukocyte populations. These studies of adipose tissue from humans and mice revealed that increased frequencies of T-bet B cells in adipose tissue depend on invariant NKT cells and correlate with weight gain during obesity. Transfer of B cells enriched for T-bet cells exacerbates metabolic disorder in obesity, while ablation of Tbx21 specifically in B cells reduces serum IgG2c levels, inflammatory cytokines, and inflammatory macrophages in adipose tissue, ameliorating metabolic symptoms.

View Article and Find Full Text PDF

Background: Extraintestinal pathogenic Escherichia coli (ExPEC) is the leading cause of bacteremia worldwide, with older populations having increased risk of invasive bacterial disease. Increasing resistance to first-line antibiotics and emergence of multidrug-resistant (MDR) strains represent major treatment challenges. ExPEC O serotypes are key targets for potential multivalent conjugate vaccine development.

View Article and Find Full Text PDF