What are the risk factors and microorganism profiles of periprosthetic hip joint infections with a concomitant sinus tract?

Introduction: A sinus tract, an abnormal channel between the skin and joint, is a major criterion that proves the presence of an underlying periprosthetic joint infection. Its presence not only increases failure rates but also leads to poor outcomes. Despite its clinical relevance, little is known about risk factors and underlying microorganism profiles.

Tracing carriage, acquisition, and transmission of ESBL-producing Escherichia coli over two years in a tertiary care hospital.

Background: The impact of community carriage on the influx of extended-spectrum beta-lactamase-producing Enterobacterales (ESBL-E) into hospitals remains understudied. In this prospective 2-year single-centre study, we investigate the community ESBL-E influx and trace the colonisation, nosocomial acquisition, transmission, and infection dynamics of ESBL-producing Escherichia coli (ESBL-Ec) in non-ICU wards at a tertiary care hospital.

Methods: This study reports primary and post hoc outcomes of the clinical trial NCT01208519 in which hospitalised patients were screened for rectal carriage of ESBL-E.

Antimicrobial resistance of Escherichia coli in cats and their drinking water: drug resistance profiles and antimicrobial-resistant genes.

Background: Antimicrobial resistance (AMR) is a global health concern that is exacerbated by the transmission of bacteria and genetic material between humans, animals and the environment. This study investigated AMR of Escherichia coli (E. coli) isolated from cats' feces and their drinking water.

Accelerating antimicrobial peptide design: Leveraging deep learning for rapid discovery.

Antimicrobial peptides (AMPs) are excellent at fighting many different infections. This demonstrates how important it is to make new AMPs that are even better at eliminating infections. The fundamental transformation in a variety of scientific disciplines, which led to the emergence of machine learning techniques, has presented significant opportunities for the development of antimicrobial peptides.

Progression of amplification during amoxicillin resistance development in .

Beta-lactam antibiotics are the most applied antimicrobials in human and veterinarian health care. Hence, beta-lactam resistance is a major health problem. Gene amplification of AmpC beta-lactamase is a main contributor to β-lactam resistance in .

Maintained susceptibility to fosfomycin in extra-hospitalary urinary isolates of Escherichia coli. Strong association of fosfomycin resistance with age and ESBL production.

Objective: Escherichia coli is isolated in most of uncomplicated community-acquired urinary tract infections (UTI) and fosfomycin is one of the treatments of choice. We analyzed the evolution of fosfomycin resistance in extrahospitalary E. coli urinary isolates and whether age and extended spectrum beta-lactamase (ESBL) production were associated to antibiotic resistance.

Early Recognition of Secondary Asthma Caused by Lower Respiratory Tract Infection in Children Based on Multi-Omics Signature: A Retrospective Cohort Study.

Objective: To explore the types of pathogens causing lower respiratory tract infections (LTRIs) in children and construction of a predictive model for monitoring secondary asthma caused by LTRIs.

Methods: Seven hundred and seventy-five children with LTRIs treated from June 2017 to July 2024 were selected as research subjects. Bacterial isolation and culture were performed on all children, and drug sensitivity tests were conducted on the isolated pathogens; And according to whether the child developed secondary asthma during treatment, they were divided into asthma group (n = 116) and non-asthma group (n = 659); Using logistic regression model to analyze the risk factors affecting secondary asthma in children with LTRIs, and establishing machine learning (ie nomogram and decision tree) prediction models; Using ROC curve analysis machine learning algorithms to predict AUC values, sensitivity, and specificity of secondary asthma in children with LTRIs.

Differential Expression of , , , and Genes in Biofilms- and Suspension-Grown Bacteria From Samples of Different Uropathogenic Strains of .

Uropathogenic (UPEC) strains are the main bacteria that cause urinary tract infections (UTIs). UPEC are a significant public health hazard due to their high proliferation, antibiotic resistance, and infection recurrence. The ability to form biofilms is a mechanism of antibiotic resistance, which requires the expression of different genes such as , , , and .

Identification of a genomic cluster related to hypersecretion of intestinal mucus and mucinolytic activity of atypical enteropathogenic (aEPEC).

Enteropathogenic (EPEC) strains are subdivided into typical (tEPEC) and atypical (aEPEC) according to the presence or absence of a virulence-associated plasmid called pEAF. Our research group has previously demonstrated that two aEPEC strains, 0421-1 and 3991-1, induce an increase in mucus production in a rabbit ileal loop model . This phenomenon was not observed with a tEPEC prototype strain.

Design, Synthesis and Pro-Inflammatory Activity of Palmitoylated Derivatives of Thioglycolic Acid as New Immunomodulators.

The immune system is essential for the defense against infections and is critically implicated in various disorders, including immunodeficiency, autoimmunity, inflammation and cancer. The current study includes a new design of palmitoylated derivatives of thioglycolic acids (PTGAs) capable of triggering innate immune responses. The new series were accessible through a three-step synthetic route, including N-palmitoylation, Claisen-Schmidt condensation and thia-Michael addition.

Urinary tract infections among under-five children with congenital anomalies of kidney and urinary tract in hospitalized patients in Addis Ababa.

Background: Congenital anomalies of the kidney and urinary tract (CAKUT) and urinary tract infections (UTIs) are significant clinical concerns in children. Children who have UTIs are also at risk of developing long-term complications, notably kidney disease and scarring UTIs. The purpose of this study was to assess the prevalence of urinary tract infection and its determinants among under-five children with congenital anomalies of kidney and urinary tract in Addis Ababa.

Drug-loaded FeO/lignin nanoparticles to treat bacterial infections.

Lignin is a biopolymer employed for various biomedical applications. Nevertheless, the drug loading and release mechanism of FeO nanoparticles with surface functionalization by lignin has yet to be described. Hence, this study functionalizes FeO nanoparticles surface with lignin (FeO/Lig) for ciprofloxacin delivery and examines its adsorption-release mechanisms.

Impact of the inoculum size on the activity of the aztreonam-avibactam combination in a murine model of peritonitis due to expressing CTX-M-15 and NDM-1.

The combination of aztreonam (ATM) and avibactam (AVI) is an attractive option to treat infections caused by extended spectrum β-lactamase plus NDM-1-producing . Since ATM activity was shown to be severely impacted by an increase in the inoculum size , we wondered whether ATM-AVI activity could be impaired in high-inoculum infections. We analyzed the impact of the inoculum size on ATM-AVI activity and in a murine model of peritonitis due to susceptible CFT073-pTOPO and its isogenic derivatives producing NDM-1 ( CFT073-NDM1) and CTX-M-15 plus NDM-1 ( CFT073-CTXM15-NDM1).

Bloodstream infections in pediatric hematology/oncology patients: a single-center study in Wuhan.

Bloodstream infections (BSIs) are a critical concern in pediatric onco-hematological patients undergoing chemotherapy or hematopoietic stem cell transplantation (HSCT), leading to a major impact on morbidity, long-term hospitalization, and mortality. We retrospectively analyzed 202 BSIs in 145 patients, consisting of 128 with hematological malignancies, one with a solid tumor, and 16 with non-malignant hematological diseases. We collected data on patient demographics, clinical characteristics, pathogen distribution, and antimicrobial pathogen susceptibility.

Modeling and optimization of culture media for recombinant vaccine antigen HpaA.

Introduction: () infection represents a significant global health concern, exacerbated by the emergence of drug-resistant strains resulting from conventional antibiotic treatments. Consequently, the development of vaccines with both preventive and therapeutic properties has become crucial in addressing infections. The adhesin protein HpaA has demonstrated strong immunogenicity across various adjuvants and dosage forms, positioning it as a key candidate antigen for recombinant subunit vaccines against .

A novel scoring system for the prediction of disease severity in STEC-HUS.

Background: Shiga toxin-producing Escherichia coli-associated hemolytic uremic syndrome (STEC-HUS) is a life-threatening condition complicated by acute kidney injury, acute respiratory distress syndrome, and central nervous system disorders. The early identification of high-risk patients is required to facilitate timely and appropriate treatment.

Methods: The medical records of patients with STEC-HUS treated at 11 hospitals in Hokkaido, Japan, were reviewed retrospectively.

The antibacterial and anti-biofilm effects of novel synthetized nitroimidazole compounds against methicillin-resistant Staphylococcus aureus and carbapenem-resistant Escherichia coli and Klebsiella pneumonia in vitro and in silico.

The antibiotic resistance and biofilm formation by bacterial pathogens has led to failure in infections elimination. This study aimed to assess the antibacterial and anti-biofilm properties of novel synthesized nitroimidazole compounds (8a-8o). In this study, nitroimidazole compounds were synthesized via the A3 coupling reaction of sample substrates in the presence of copper-doped silica cuprous sulfate (CDSCS).

Temporal trends in antimicrobial resistance of medically important pathogens on Curaçao.

Background: The Caribbean lacks recent comprehensive antimicrobial resistance data to inform clinicians and decision-makers. This study aims to provide a snapshot of susceptibility trends for pathogens on Curaçao, an island in the southern Caribbean.

Methods: We analyzed susceptibility data of bacterial pathogens isolated from samples submitted from patients attending general practitioners, outpatient clinics and those who were hospitalized between January 2018 and December 2023.

Susceptibility of various Gram-negative bacteria to antibacterial agents: SMART in China 2019-2020.

Background: The Study for Monitoring Antimicrobial Resistance Trends (SMART) is an international surveillance program longitudinally monitoring aerobic and facultative Gram-negative bacteria (GNB) involvement in infections and their antimicrobial resistance profiles. Here the incidence and resistance patterns of Chinese GNB isolates from bloodstream infections (BSI), intraabdominal infections (IAI), respiratory tract infections (RTI) and urinary tract infections (UTI) to commonly used antibacterial agents has been updated. 4,975 GNB isolates collected from 22 hospitals across 7 regions of China from 2019 to 2020 were analyzed.

Molecular characterization and safety properties of multi drug-resistant Escherichia coli O157:H7 bacteriophages.

The increase in multi drug resistance (MDR) amongst food-borne pathogens such as Escherichia coli O157:H7, coupled with the upsurge of food-borne infections caused by these pathogens is a major public health concern. Lytic phages have been employed as an alternative to antibiotics for use against food-borne pathogens. However, for effective application, phages should be selectively toxic.

Developmental patterns of intestinal group 3 innate lymphoid cells in piglets and their response to enterotoxigenic Escherichia coli infection.

Diarrhoea and preweaning mortality in piglets are crucial factors impacting the economic sustainability of the swine industry. Pathogenic infections are among the main causes of diarrhea and mortality. Group 3 innate lymphoid cells (ILC3s) are crucial for safeguarding against pathogenic infections.

Fecal carriage of ESBL-producing E. coli and genetic characterization in rural children and livestock in the Somali region, Ethiopia: a one health approach.

Background: The emergence and spread of Extended-Spectrum Beta-Lactamase (ESBL)-producing Escherichia coli pose significant challenges for treatment of infections globally. This challenge is exacerbated in sub-Saharan African countries, where the prevalence of ESBL-producing E. coli is high.

Epidemiological and genetic characteristics of clinical carbapenemase-producing Enterobacterales isolates from Batna hospitals in Algeria.

Background: Carbapenemase-producing Enterobacterales isolates are associated with significant mortality and have emerged as a major problem in healthcare settings worldwide.

Objective: Our aim was to investigate the epidemiological and genotypic characteristics of carbapenemase-positive Enterobacterales isolates from patients hospitalised in three hospitals in the city of Batna, Algeria.

Methods: Between 2016 and 2019, a total of 5,316 clinical isolates were obtained.

Broaden properties of ambroxol hydrochloride as an antibiofilm compound.

Biofilm-associated microorganisms can cause many infections and are an important cause of resistance to several antimicrobials. The antibiotic crisis has led to a pressing need for new therapeutic tools. Ambroxol is frequently used as a mucolytic agent in respiratory diseases with increased mucus production.

Deficiency of the flagellin subunit FliC exacerbates the pathogenicity of extraintestinal pathogenic Escherichia coli in BALB/c mice by inducing a more intense inflammation.

Extraintestinal pathogenic Escherichia coli (ExPEC) can cause systemic infections in livestock and poultry. Flagellin, a classical virulence factor, acts as a promoter of cell adhesion and invasion, as well as an inducer of inflammatory responses during intestinal pathogen infection. Further understanding is needed regarding the interaction between flagellin and host within the extra-intestinal ecological niche to facilitate a deeper comprehension of ExPEC infection mechanisms.