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You searched for: Keyword "pathogen survival" Remove constraint Keyword: "pathogen survival"
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1. Estimation of parameters in the Weibull model from microbial survival data obtained under constant conditions with come-up times

Author:
Si Zhu; Osvaldo Campanella; Guibing Chen
Source:
Journal of food engineering 2021 v.292 pp. 110364
ISSN:
0260-8774
Subject:
pathogen survival,   etc   ; Weibull statistics; equations;     Show all 3 Subjects
Abstract:
... The Weibull model is frequently used to describe non-linear microbial survival due to its simplicity and flexibility. An essential part of developing a predictive microbiological approach is to accurately estimate survival parameters. In this study, an explicit integral representation of the Weibull model was derived from its original differential form. Calculated microbial survival curves under t ...
DOI:
10.1016/j.jfoodeng.2020.110364

2. Shigella infection and host cell death: a double-edged sword for the host and pathogen survival

Author:
Hiroshi Ashida; Toshihiko Suzuki; Chihiro Sasakawa
Source:
Current opinion in microbiology 2021 v.59 pp. 1-7
ISSN:
1369-5274
Subject:
pathogen survival,   etc   ; Shigella; bacterial infections; enterocytes; macrophages; microbiology; necroptosis; necrosis; pathogens; pyroptosis;     Show all 10 Subjects
Abstract:
... In response to bacterial infection, epithelial cells undergo several types of cell death, including apoptosis, necrosis, pyroptosis, and necroptosis, which serve to expel the infected cells and activate the innate and acquired immune responses. Shigella initially invades macrophages and subsequently surrounding enterocytes; the pathogen executes macrophage cell death but prevents epithelial cell d ...
DOI:
10.1016/j.mib.2020.07.007

3. Host Delipidation Mediated by Bacterial Effectors

Author:
Ligang Mei; Xiaofeng Qiu; Chen Jiang; Aimin Yang
Source:
Trends in microbiology 2021 v.29 no.3 pp. 238-250
ISSN:
0966-842X
Subject:
pathogen survival,   etc   ; cysteine proteinases; lipids; microbiology; moieties; pathogenesis; signal transduction;     Show all 7 Subjects
Abstract:
... delipidation of host lipidated proteins. This in turn results in disruption of crucial lipidation-mediated host signal transduction, thereby enabling pathogen survival and replication. In this review, we discuss the role of the bacterial effectors in interactions with the host and highlight our knowledge of irreversible host delipidation, with a focus on the common concerted biochemical mechanisms ...
DOI:
10.1016/j.tim.2020.09.012

4. Models for factors influencing pathogen survival in low water activity foods from literature data are highly significant but show large unexplained variance

Author:
Matthew J. Igo; Donald W. Schaffner
Source:
Food microbiology 2021 v.98 pp. 103783
ISSN:
0740-0020
Subject:
pathogen survival,   etc   ; Escherichia coli; Salmonella; data collection; inoculation methods; inoculum; regression analysis; serotypes; survival rate; temperature; variance; water activity;     Show all 12 Subjects
Abstract:
... Factors that control pathogen survival in low water activity foods are not well understood and vary greatly from food to food. A literature search was performed to locate data on the survival of foodborne pathogens in low-water activity (<0.70) foods held at temperatures <37 °C. Data were extracted from 67 publications and simple linear regression models were fit to each data set to estimate log ...
DOI:
10.1016/j.fm.2021.103783

5. Risk factors for Salmonella enterica subsp. enterica persistence in broiler-chicken flocks on Reunion Island

Author:
M.A. Ethèves; N. Choisis; S. Alvarez; F. Dalleau; J. Hascoat; V. Gallard; E. Cardinale
Source:
Heliyon 2021 v.7 no.3 pp. e06278
ISSN:
2405-8440
Subject:
pathogen survival,   etc   ; disinfection; pest control; poultry manure; questionnaires; serotypes; Reunion;     Show all 7 Subjects
Abstract:
... This study was conducted to identify the main risk factors for Salmonella spp. persistence in broiler flocks in Reunion Island. Seventy broiler farms were surveyed from March 2016 to June 2018. Samples of fresh droppings were collected using gauze socks, and a questionnaire was completed with the farmers. Persistence was defined as an infection with the same serovar before and after cleaning and d ...
DOI:
10.1016/j.heliyon.2021.e06278

6. Impact of bacterial persisters on their host

Author:
Ana L Moldoveanu; Julian A Rycroft; Sophie Helaine
Source:
Current opinion in microbiology 2021 v.59 pp. 65-71
ISSN:
1369-5274
Subject:
pathogen survival,   etc   ; antibiotic resistance; antibiotics; bacteria; biosynthesis; evolution; immune response;     Show all 7 Subjects
Abstract:
... The rise of antibiotic failure poses a severe threat to global health. There is growing concern that this failure is not solely driven by stable antibiotic resistance but also by a subpopulation of transiently non-growing, antibiotic tolerant bacteria. These ‘persisters’ have been proposed to seed relapsing infections, an important clinical outcome of treatment failure — although definitive eviden ...
DOI:
10.1016/j.mib.2020.07.006

7. Metabolic Responses of a Phototrophic Co-Culture Enriched from a Freshwater Sediment on Changing Substrate Availability and its Relevance for Biogeochemical Iron Cycling

Author:
Caroline Schmidt; Verena Nikeleit; Franziska Schaedler; Arne Leider; Ulf Lueder; Casey Bryce; Christian Hallmann; Andreas Kappler
Source:
Geomicrobiology journal 2021 v.38 no.3 pp. 267-281
ISSN:
1521-0529
Subject:
pathogen survival,   etc   ; Chlorobium; Rhodopseudomonas; absorption; acetates; coculture; freshwater; littoral zone; sediments;     Show all 9 Subjects
Abstract:
... Metabolic flexibility controls microbial survival and shapes ecological structures. Although the utilization of a variety of substrates has been studied for individual metabolically versatile microorganisms, only little is known about the response of microbial communities toward substrate fluctuation. Here, we exposed a phototrophic co-culture (Rhodopseudomonas sp. and Chlorobium sp.) that was iso ...
DOI:
10.1080/01490451.2020.1837303

8. Disruption of Fis reduces bacterial persister formation by regulating glutamate metabolism in Salmonella

Author:
Dongmei Yan; Qisi Zhang; Qingping Fu; Mingzhong Sun; Xinxiang Huang
Source:
Microbial pathogenesis 2021 v.152 pp. 104651
ISSN:
0882-4010
Subject:
pathogen survival,   etc   ; DNA-binding proteins; Salmonella; antibiotics; glutamic acid; metabolism; pathogenesis; stress response;     Show all 8 Subjects
Abstract:
... The presence of persisters causes recalcitrance to antibiotic treatment, and can be attributed to a fairly large number of clinically refractory infections in several species of bacteria. Many studies have explored this phenomenon, but the mechanisms remain poorly understood. In this study, we found that the deletion of fis, which encodes a key DNA-binding protein mediating various biological proc ...
DOI:
10.1016/j.micpath.2020.104651

9. Modeling the dynamic kinetics of microbial disinfection with dissipating chemical agents—a theoretical investigation

Author:
Micha Peleg
Source:
Applied microbiology and biotechnology 2021 v.105 no.2 pp. 539-549
ISSN:
0175-7598
Subject:
pathogen survival,   etc   ; Weibull statistics; biotechnology; chlorination; differential equation; disinfectants; disinfection; models; survival rate;     Show all 9 Subjects
Abstract:
... The most notable microbial survival models of disinfection kinetics are the original and modified versions of the static Chick-Watson-Hom’s (CWH) initially developed for water chlorination. They can all be viewed as special cases of the Weibull survival model, where the observed static curve is the cumulative form (CDF) of the times at which the individual targeted microbes succumb to the treatmen ...
DOI:
10.1007/s00253-020-11042-8

10. Biology and Management of Bacterial Spot of Peppers in Oklahoma

Author:
John Damicone; Felipe Cevallos; Mark Trent; Claudia Diaz; Brett Johnson; Zhaorigetu Hubhachen
Source:
Plant disease 2021 v.105 no.4 pp. 1129-1135
ISSN:
0191-2917
Subject:
pathogen survival,   etc   ; Xanthomonas euvesicatoria; capsaicin; copper; crop rotation; cultivars; hybrids; plant genetics; sweet peppers; virulence; Oklahoma;     Show all 11 Subjects
Abstract:
... at the end of the 2018 trial depended on source plant genetics. AvrBs2 was expressed in 86% of isolates from a susceptible hybrid but not in any isolates from the Bs2 and Bs1-2-3 hybrids. HR resistances effectively protected yield, but their deployment may not be sustainable without cultural practices such as crop rotation that limit pathogen survival and transmission to subsequent crops. ...
DOI:
10.1094/PDIS-05-20-0926-RE

11. Antimicrobial activity of ClO2 gas against Salmonella Enteritidis on almonds

Author:
Jihwan Lim; Eungyung Kim; Yeseul Shin; Jee-hoon Ryu; Hoikyung Kim
Source:
Food microbiology 2021 v.99 pp. 103819
ISSN:
0740-0020
Subject:
pathogen survival,   etc   ; Salmonella Enteritidis; antimicrobial properties; chlorine dioxide; detection limit; food microbiology; relative humidity; serotypes;     Show all 8 Subjects
Abstract:
... Nuts, including almonds, are occasionally contaminated with Salmonella spp. In this study, we used chlorine dioxide (ClO₂) gas to inactivate S. enterica subsp. Enterica serovar Enteritidis on almonds. Almonds inoculated with a single strain of S. Enteritidis (8.95 log cfu/mL) were exposed to ClO₂ gas generated from 1.0 or 1.5 mL ClO₂ solution in a sealed container at 50 or 60 °C (43% relative humi ...
DOI:
10.1016/j.fm.2021.103819

12. New insights into regulatory B cells biology in viral, bacterial, and parasitic infections

Author:
Mohammad-Javad Sanaei; Mahboobeh Nahid-Samiei; Milad Shahini Shams Abadi; Mohammad-Hassan Arjmand; Gordon A. Ferns; Davood Bashash; Ghorbanali Rahimian; Nader Bagheri
Source:
Infection, genetics, and evolution 2021 v.89 pp. 104753
ISSN:
1567-1348
Subject:
pathogen survival,   etc   ; antibody formation; antigen presentation; evolution; genetics; humans; immunosuppression; infection; interleukin-10; macrophage activation; microbial load; vaccines;     Show all 12 Subjects
Abstract:
... of Bᵣₑgₛ is positively associated with viral and bacterial load and can contribute to poor vaccine responses. Bᵣₑgₛ can also facilitate pathogen survival at an early stage of infection, and subsequently cause increased severity of disease by inhibiting pro-inflammatory cytokine production, macrophage activation, and inflammatory T cells activation such as Th1, Th17, and Th22. Also, Bᵣₑgₛ afford ...
DOI:
10.1016/j.meegid.2021.104753

13. A modified Weibull model for design of oscillated high hydrostatic pressure processes

Author:
Si Zhu; Bing Li; Guibing Chen
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2021 v.143 pp. 111118
ISSN:
0023-6438
Subject:
pathogen survival,   etc   ; Escherichia coli; Internet; Listeria innocua; Salmonella Enteritidis; Weibull statistics; computer software; high pressure treatment; models;     Show all 9 Subjects
Abstract:
... During high hydrostatic pressure (HHP) processing, pressure can be applied in a single cycle of pressurization, pressure holding, and depressurization or multiple cycles. The latter is called oscillated HHP (OHHP) processing. In this study, it was hypothesized that the pressure gradient during HHP processing is positively related to the lethal rate, based on which a modified Weibull model was deve ...
DOI:
10.1016/j.lwt.2021.111118

14. Evaluating the efficacy of sodium acid sulfate to reduce Escherichia coli O157:H7 and its biofilms on food-contact surfaces

Author:
Pabasara Weerarathne; Josh Payne; Joyjit Saha; Tony Kountoupis; Ravi Jadeja; Divya Jaroni
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2021 v.139 pp. 110501
ISSN:
0023-6438
Subject:
pathogen survival,   etc   ; Escherichia coli O157; absorbance; biofilm; chlorine; food industry; gentian violet; pathogens; peracetic acid; sanitizers; sodium; stainless steel; sulfates;     Show all 13 Subjects
Abstract:
... Escherichia coli O157:H7 biofilms pose challenges to the food industry by facilitating pathogen persistence. Sodium acid sulfate (SAS), a food-acid with antimicrobial properties, is poorly understood for its biofilm-disrupting capabilities. Efficacy of SAS (0.1, 1, and 3%), to disrupt E. coli O157:H7 biofilms in-vitro and on food-contact surfaces, was compared with water, chlorine (200 ppm) and pe ...
DOI:
10.1016/j.lwt.2020.110501

15. From individual response to population ecology: Environmental factors restricting survival of vegetative bacteria at solid-air interfaces

Author:
Rosha Pashang; Kimberley A. Gilbride
Source:
Science of the total environment 2021 v.773 pp. 144982
ISSN:
0048-9697
Subject:
pathogen survival,   etc   ; acclimation; bentonite; energy expenditure; microbial communities; nuclear fuels; population ecology; public health; radioactive waste; risk assessment; temperature; Canada;     Show all 12 Subjects
Abstract:
... Combating microbial survival on dry surfaces contributes to improving public health in indoor environments (clinical and industrial settings) and extends to the natural environment. For vegetative bacteria at solid-air interfaces, lack of water impacts cellular response, and acclimation depends on community support in response to ecological processes. Gaining insights about important ecological pr ...
DOI:
10.1016/j.scitotenv.2021.144982

16. Perspectives for improvement of Mycoplasma hyopneumoniae vaccines in pigs

Author:
Dominiek Maes; Filip Boyen; Bert Devriendt; Peter Kuhnert; Artur Summerfield; Freddy Haesebrouck
Source:
BMC veterinary research 2021 v.52 no.1 pp. 67
ISSN:
1297-9716
Subject:
pathogen survival,   etc   ; DNA; Mycoplasma hyopneumoniae; adhesins; adjuvants; animal welfare; epithelium; immune response; immune system; pathogenesis; pathogens; respiratory tract diseases; swine; vaccination; veterinary medicine;     Show all 15 Subjects
Abstract:
... of the pathogenesis and immune responses following M. hyopneumoniae infection, outlines the major limitations of the commercial vaccines and reviews the different experimental M. hyopneumoniae vaccines that have been developed and tested in mice and pigs. Most experimental subunit, DNA and vector vaccines are based on the P97 adhesin or other factors that are important for pathogen survival and pathogenesis. Other ...
DOI:
10.1186/s13567-021-00941-x

17. Peptidylarginine Deiminase (PAD) and Post-Translational Protein Deimination—Novel Insights into Alveolata Metabolism, Epigenetic Regulation and Host–Pathogen Interactions

Author:
Árni Kristmundsson; Ásthildur Erlingsdóttir; Sigrun Lange
Source:
Biology 2021 v.10 no.3 pp. -
ISSN:
2079-7737
Subject:
pathogen survival,   etc   ; Miozoa; arginine; autotrophs; citrulline; epigenetics; eukaryotic cells; histology; histones; metabolism; neutrophils; nutrition; parasites; parasitism; phagocytosis; phylogeny; predation; protein-arginine deiminase; proteomics; spores;     Show all 20 Subjects
Abstract:
... of arginine to citrulline in a wide range of target proteins, contributing to protein moonlighting in physiological and pathological processes. The identification of deiminated protein targets in alveolate parasites may therefore provide novel insight into pathogen survival and host-pathogen interactions. The current study assessed PAD homologues and deiminated protein profiles of two alveolate parasites ...
DOI:
10.3390/biology10030177

18. Impacts of wetting-drying cycles on short-term carbon and nitrogen dynamics in Amynthas earthworm casts

Author:
Michelle Man Suet LAW; Derrick Yuk Fo LAI
Source:
Pedosphere 2021 v.31 no.3 pp. 423-432
ISSN:
1002-0160
Subject:
pathogen survival,   etc   ; Amynthas; aggregate stability; carbon; carbon dioxide; denitrification; earthworms; food choices; mineralization; nitrogen; nitrogen content; rain; rainfall simulation; soil nutrient dynamics;     Show all 14 Subjects
Abstract:
... Effects of earthworm casts on soil nutrient dynamics and their responses to changing moisture availability in subtropical ecosystems remain poorly understood. This study aimed to examine short-term carbon (C) and nitrogen (N) dynamics and their interactions with wetting-drying cycles in three different structural forms (i.e., granular, globular, and heap-like) of Amynthas earthworm casts. The rate ...
DOI:
10.1016/S1002-0160(20)60081-9

19. Temporal and spatial dynamics of grapevine anthracnose and its relationship to pathogen survival

Author:
Ricardo Feliciano dos Santos; Lilian Amorim; Priscila Barbieri Zini; Marcel Bellato Spósito
Source:
Phytopathologische Zeitschrift 2020 v.168 no.7-8 pp. 380-390
ISSN:
0931-1785
Subject:
pathogen survival,   etc   ; Elsinoe ampelina; Vitis labrusca; anthracnose; budbreak; control methods; disease course; disease severity; dormancy; foliar diseases; fungicides; growing season; income; inoculum; leaves; logit analysis; models; small fruits; stems; sulfur; table grapes; vines; vineyards; Brazil;     Show all 24 Subjects
Abstract:
... and its relationship to pathogen survival. The experiment was carried out in a vineyard of table grape Vitis labrusca in Brazil, during the 2014 and 2015 growing seasons. The incidence of vines with diseased leaves, stems and berries and the disease severity on leaves were recorded from bud break to veraison. Monomolecular, logistic and Gompertz models were fitted by non‐linear regression ...
DOI:
10.1111/jph.12902

20. Low-shear modeled microgravity impacts the acid stress response and post-thermal stress behavior of acid-resistant, adaptable, and sensitive Escherichia coli O157:H7 strains

Author:
H.W. Kim; M.S. Rhee
Source:
Food control 2021 v.121 pp. 107603
ISSN:
0956-7135
Subject:
pathogen survival,   etc   ; Escherichia coli O157; acid tolerance; bacterial proteins; heat stress; microgravity; molecular chaperones; plate count; resistance mechanisms; shear stress; stress response; transcriptomics;     Show all 12 Subjects
Abstract:
... Acid resistance is critical for the survival of Escherichia coli O157:H7 in acidic environments. The representative space environment microgravity is known to have a great impact on bacteria, but the acid stress response of E. coli O157:H7 under microgravity conditions remains unclear. Here, we show that the acid resistance of sbacteria is altered by the upregulation of related resistance systems. ...
DOI:
10.1016/j.foodcont.2020.107603