Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Some Listeria monocytogenes strains are persistent in food processing environments, where this pathogen may be subjected to various stresses. This study aimed to elucidate the response of persistent strains of L. monocytogenes to low pH and HO exposure. Almost all of the persistent strains examined were highly susceptible to low pH, whereas HO susceptibility was comparable to that of control strains. Two persistent strains isolated from the same sample, however, exhibited lower susceptibility to low pH. These findings suggest an acid-susceptible phenotype predominates in the habitat, indicating that environmental conditions contribute to the establishment of persistence. Representative strains exhibiting acid-susceptible and less acid-susceptible phenotypes were further investigated regarding acid response characteristics. Less acid-susceptible strains exhibited increased survival in acidified brain heart infusion (BHI) broth compared with acidified phosphate-buffered saline (PBS). These strains also exhibited increased survival in acidified PBS containing glucose and glutamate, which are involved in acid response mechanisms, compared with acidified PBS alone. However, neither acidified BHI broth nor exogenous glucose and glutamate increased survival of acid-susceptible strains. An adaptive acid tolerance response of the acid-susceptible phenotype was observed, but this was limited compared with that of the less acid-susceptible phenotype.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.fm.2019.103312 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Dynamics and Persistence of a Generalized Multi-strain SIS Model.
Bull Math Biol
September 2025
Department of Mathematics, Siena University, 515 Loudon Road, Loudonville, NY, 12211, USA.
Autonomous differential equation compartmental models hold broad utility in epidemiology and public health. However, these models typically cannot account explicitly for myriad factors that affect the trajectory of infectious diseases, with seasonal variations in host behavior and environmental conditions as noteworthy examples. Fortunately, using non-autonomous differential equation compartmental models can mitigate some of these deficiencies, as the inclusion of time-varying parameters can account for temporally varying factors.
View Article and Find Full Text PDFFrom Evidence to Bedside: The Role of Short-Acting β-Blockers in Sepsis Care.
Cardiol Rev
September 2025
Departments of Cardiology and Medicine, Westchester Medical Center and New York Medical College, Valhalla, NY.
Sepsis remains a leading cause of critical illness and mortality worldwide, driven by a dysregulated host response to infection and often complicated by persistent tachycardia and cardiovascular dysfunction. Increasing evidence implicates excessive sympathetic activation as a contributor to sepsis-related hemodynamic instability and myocardial injury, prompting growing interest in the use of β-adrenergic blockade as a therapeutic adjunct. This review synthesizes current data on the safety and efficacy of short-acting, cardioselective β-blockers (BBs), particularly esmolol and landiolol, in septic shock.
View Article and Find Full Text PDFFormulating cathode materials based on high-entropy strategies for sodium-ion batteries.
Chem Sci
September 2025
College of Chemistry and Materials Engineering, Wenzhou University Wenzhou Zhejiang 325035 P. R. China
Sodium-ion batteries (SIBs) are promising alternatives to lithium-ion batteries (LIBs) owing to abundant resources and cost-effectiveness. However, cathode materials face persistent challenges in structural stability, ion kinetics, and cycle life. This review highlights the transformative potential of high-entropy (HE) strategies that leveraging multi-principal element synergies to address these limitations entropy-driven mechanisms.
View Article and Find Full Text PDFAerobic degradation of hexachlorobenzene and pentachloronitrobenzene by Cupriavidus nantongensis HB4B5: Dechlorination mechanisms and bioremediation potential.
Environ Int
August 2025
State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China. Electronic address:
Organochlorine pesticides (OCPs), including hexachlorobenzene (HCB) and pentachloronitrobenzene (PCNB), are highly toxic and persistent pollutants that pose significant ecological and human health risks. Their chemical stability makes them particularly resistant to biodegradation. In this study, we isolated and characterized Cupriavidus nantongensis HB4B5, a novel aerobic bacterium capable of efficiently degrading HCB and PCNB, without the accumulation of toxic intermediates.
View Article and Find Full Text PDFEvaluation of biventricular function in asthmatic children with different severity by new echocardiographic modalities.
BMC Pediatr
September 2025
Department of Pediatrics, Faculty of Medicine, Tanta University, Tanta, Egypt.
Background: This study aimed to evaluate the impact of asthma severity on biventricular cardiac functions using tissue Doppler imaging (TDI), two-dimensional speckle tracking echocardiography (2D-STE), and three-dimensional speckle tracking echocardiography (3D-STE).
Methods: Sixty-three children with asthma, aged between 5 and 16 years, were enrolled in the study along with 63 matched controls. All participants underwent cardiac assessments, including TDI, 2D-STE, 3D-STE, conventional echocardiography, and pulmonary function testing with spirometry.