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Surveillance of listeriosis in Finland during 1995-2004.

https://arctichealth.org/en/permalink/ahliterature168646
Source
Euro Surveill. 2006;11(6):82-5
Publication Type
Article
Date
2006
Author
O. Lyytikäinen
U M Nakari
S. Lukinmaa
E. Kela
N. Nguyen Tran Minh
A. Siitonen
Author Affiliation
Department of Infectious Disease Epidemiology, National Public Health Institute (KTL), Helsinki, Finland.
Source
Euro Surveill. 2006;11(6):82-5
Date
2006
Language
English
Publication Type
Article
Keywords
Age Distribution
Aged
Cluster analysis
Disease Outbreaks
Female
Finland - epidemiology
Fish Products - microbiology
Genotype
Humans
Incidence
Infant, Newborn
Listeria monocytogenes - classification - genetics - isolation & purification
Listeriosis - epidemiology - microbiology - mortality
Population Surveillance
Pregnancy
Registries
Serotyping
Abstract
We analysed the surveillance data from listeriosis cases notified to the Finnish National Infectious Diseases Register between 1995 and 2004 and describe our recent experience in investigating clusters of listeriosis cases. The number of annual cases varied between 18 and 53 but no trends in incidence were identified (average annual incidence was 7 cases per million inhabitants). Only a few cases affected pregnant women or newborns. Most of the patients were elderly people with non-malignant underlying illnesses; 25% of them died from their infections. By routine sero- and genotyping of the listeria isolates, we detected several clusters; the vehicle for infection was only identified for two outbreaks. At least one quarter of listeriosis cases (78/315) was caused by a certain sero-genotype or closely related genotypes, which have also been found from vacuum-packed cold-smoked or cold-salted fish products. During 2000-2003, Finnish consumers were repeatedly informed about food precautions for risk groups. The information was also given to attending physicians and prenatal clinics.
PubMed ID
16801696 View in PubMed
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Enhanced immunological memory responses to Listeria monocytogenes in rodents, as measured by delayed-type hypersensitivity (DTH), adoptive transfer of DTH, and protective immunity, following Lactobacillus casei Shirota ingestion.

https://arctichealth.org/en/permalink/ahliterature57442
Source
Clin Diagn Lab Immunol. 2003 Jan;10(1):59-65
Publication Type
Article
Date
Jan-2003
Author
R. de Waard
E. Claassen
G C A M Bokken
B. Buiting
J. Garssen
J G Vos
Author Affiliation
Department of the Science of Food of Animal Origin, Utrecht University, Utrecht, The Netherlands. dewaard@hi.nl
Source
Clin Diagn Lab Immunol. 2003 Jan;10(1):59-65
Date
Jan-2003
Language
English
Publication Type
Article
Keywords
Administration, Oral
Adoptive Transfer
Animals
Hypersensitivity, Delayed
Immunity, Cellular
Immunologic Memory
Lactobacillus casei
Listeria monocytogenes - immunology
Male
Mice
Mice, Inbred BALB C
Rats
Rats, Wistar
Spleen - cytology
T-Lymphocytes - immunology
Abstract
We have investigated the effect of orally administered Lactobacillus casei Shirota (L. casei) on immunological memory, as measured by delayed-type hypersensitivity (DTH) and acquired cellular resistance (ACR). The studies were performed in animal models in which the animals were rendered immune by a primary Listeria monocytogenes infection. It was shown that orally administered viable L. casei, and not heat-killed L. casei, enhanced significantly the antigen-specific DTH at 24 and 48 h in Wistar rats, Brown Norway rats, and BALB/c mice in a time- and dose-dependent fashion. L. casei had to be administered at least 3 days prior to the DTH assay at a daily dose of 10(9) CFU in order to induce significant effects. Long-term administration of 10(9) CFU of viable L. casei resulted in enhanced ACR, as demonstrated by reduced L. monocytogenes counts in the spleen and liver and diminished serum alanine aminotransferase activity after reinfection. Enhancement of cell-mediated immunological immune responses by L. casei was further established in an adoptive transfer study. Naïve recipient BALB/c mice, which were infused with nonadherent, immunized spleen cells from L. casei-fed donor BALB/c mice, showed significantly enhanced DTH responses at 24 and 48 h compared to recipient mice which received spleen cells from control donor mice. In conclusion, orally administered L. casei enhanced cell-mediated immunological memory responses. The effects relied on lactobacillus dose and viability as well as timing of supplementation and, further, appeared to be independent of host species or genetic background.
PubMed ID
12522040 View in PubMed
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High-pressure destruction kinetics of Listeria monocytogenes on pork.

https://arctichealth.org/en/permalink/ahliterature203314
Source
J Food Prot. 1999 Jan;62(1):40-5
Publication Type
Article
Date
Jan-1999
Author
D M Mussa
H S Ramaswamy
J P Smith
Author Affiliation
Department of Food Science and Agricultural Chemistry, McGill University, Ste. Anne-de-Bellevue, Quebec, Canada.
Source
J Food Prot. 1999 Jan;62(1):40-5
Date
Jan-1999
Language
English
Publication Type
Article
Keywords
Animals
Colony Count, Microbial
Food Handling
Food Microbiology
Humans
Hydrostatic Pressure
Kinetics
Listeria monocytogenes - growth & development
Meat - microbiology
Meat-Packing Industry
Swine
Abstract
Packaged fresh pork chops (30-g samples) containing an indigenous bacterial population of approximately 10(7) CFU/g were inoculated with 10(7) CFU of Listeria monocytogenes Scott A per g, heat sealed, and subjected to high-pressure processing at 200 to 400 MPa for up to 90 min. Total counts and the number of surviving L. monocytogenes cells were determined by a spread plate technique on tryptic soy agar and modified Oxford medium, respectively. The pressure destruction was characterized by a dual-behavior, consisting of a step change in the number of survivors (Pk0) with the application of a pressure pulse and a first-order rate drop in the number of survivors during the pressure hold period. Higher pressures resulted in higher rates of microbial inactivation, as indicated by their associated lower D values (and higher k values). The pressure sensitivities of the kinetic parameters were evaluated on the basis of Arrhenius and pressure death time (PDT)-type models. The results suggested that L. monocytogenes was more resistant to pressure inactivation than the indigenous microflora (the volume change of activation, deltaV* [Arrhenius model]), and Zp values (PDT model) were -4.17 x 10(-5) m3 mole(-1) and 134 MPa for indigenous microflora and -3.43 x 10(-5) m3 mole(-1) and 163 MPa for L. monocytogenes respectively.
PubMed ID
9921827 View in PubMed
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Listeria monocytogenes associated kerato-conjunctivitis in four horses in Norway.

https://arctichealth.org/en/permalink/ahliterature276795
Source
Acta Vet Scand. 2015 Nov 09;57:76
Publication Type
Article
Date
Nov-09-2015
Author
Tobias Revold
Takele Abayneh
Hege Brun-Hansen
Signe L Kleppe
Ernst-Otto Ropstad
Robert A Hellings
Henning Sørum
Source
Acta Vet Scand. 2015 Nov 09;57:76
Date
Nov-09-2015
Language
English
Publication Type
Article
Keywords
Animals - diagnosis - drug therapy - microbiology - diagnosis - drug therapy - microbiology - genetics - isolation & purification - diagnosis - drug therapy - microbiology - veterinary
Female - diagnosis - drug therapy - microbiology - diagnosis - drug therapy - microbiology - genetics - isolation & purification - diagnosis - drug therapy - microbiology - veterinary
Horse Diseases - diagnosis - drug therapy - microbiology - diagnosis - drug therapy - microbiology - genetics - isolation & purification - diagnosis - drug therapy - microbiology - veterinary
Horses - diagnosis - drug therapy - microbiology - diagnosis - drug therapy - microbiology - genetics - isolation & purification - diagnosis - drug therapy - microbiology - veterinary
Keratoconjunctivitis, Infectious - diagnosis - drug therapy - microbiology - diagnosis - drug therapy - microbiology - genetics - isolation & purification - diagnosis - drug therapy - microbiology - veterinary
Listeria monocytogenes - diagnosis - drug therapy - microbiology - diagnosis - drug therapy - microbiology - genetics - isolation & purification - diagnosis - drug therapy - microbiology - veterinary
Listeriosis - diagnosis - drug therapy - microbiology - diagnosis - drug therapy - microbiology - genetics - isolation & purification - diagnosis - drug therapy - microbiology - veterinary
Male - diagnosis - drug therapy - microbiology - diagnosis - drug therapy - microbiology - genetics - isolation & purification - diagnosis - drug therapy - microbiology - veterinary
Norway - diagnosis - drug therapy - microbiology - diagnosis - drug therapy - microbiology - genetics - isolation & purification - diagnosis - drug therapy - microbiology - veterinary
Abstract
Listeria monocytogenes has been reported to cause various infectious diseases in both humans and animals. More rarely, ocular infections have been reported. To our knowledge, only two cases of Listeria keratitis have been described in horses. We report kerato-conjunctivitis in four Norwegian horses associated with L. monocytogenes. Clinically, all cases were presented with recurrent unilateral kerato-conjunctivitis. L. monocytogenes bacteria were isolated from swab samples from all cases, and cytology carried out in 3 cases was indicative of L. monocytogenes infection. The present report describes the first known cases in which L. monocytogenes has been isolated from keratitic lesions in horses in Norway. A potential risk factor may be feeding of silage or haylage, but other sources of infection cannot be ruled out. The phenotypic features including antimicrobial susceptibility and serotype of the isolates are described. Laboratory detection of L. monocytogenes demands extra caution since only low numbers of bacteria were detected in the eye-swabs, probably due to the low volume of sample material and the intracellular niche of the bacterium. A general poor response to treatment in all these cases indicates that clinicians should pay extra attention to intensity and duration of treatment if L. monocytogenes is identified in connection with equine kerato-conjunctivitis.
Notes
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PubMed ID
26552393 View in PubMed
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[Antibacterial activity of alpha-, beta-unsaturated ketones of the furanic sequence]

https://arctichealth.org/en/permalink/ahliterature70219
Source
Mikrobiol Zh. 1966;28(4):77-9
Publication Type
Article
Date
1966

[SANITARY SIGNIFICANCE OF SOIL SEA COASTS].

https://arctichealth.org/en/permalink/ahliterature268686
Source
Gig Sanit. 2015 Sep-Oct;94(5):20-3
Publication Type
Article
Author
M L Sidorenko
L S Buzoleva
Source
Gig Sanit. 2015 Sep-Oct;94(5):20-3
Language
Russian
Publication Type
Article
Keywords
Environmental Monitoring - methods
Geologic Sediments - chemistry - microbiology
Listeria monocytogenes - isolation & purification
Oceans and Seas
Russia
Soil - chemistry - standards
Soil Microbiology - standards
Yersinia pseudotuberculosis - isolation & purification
Abstract
There was investigated the dynamics of growth of Listeria monocytogenes and Yersinia pseudotuberculosis in soils of sea coast (mid-flight and maritime soils). These bacteria were shown to reproduced well in all researched soils, preferring nevertheless maritime soils. The content of the humus was determined to be the one of the limiting factors restricting the multiplication of pathogenic bacteria in studied soils. Abiotic characteristic of soils of sea coast were established to render the direct positive influence on the preservation and reproduction of pathogenic microflora in them. This is promoted by a degree of a saturation by the bases, cation-exchange capacity, quantity of humus. In the formation of environmental policy it should be taken into account and the human-induced load on the soil should be limited
PubMed ID
26625609 View in PubMed
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Comparative investigations of Listeria monocytogenes isolated from a turkey processing plant, turkey products, and from human cases of listeriosis in Denmark.

https://arctichealth.org/en/permalink/ahliterature196333
Source
Epidemiol Infect. 2000 Oct;125(2):303-8
Publication Type
Article
Date
Oct-2000
Author
B. Ojeniyi
J. Christensen
M. Bisgaard
Author Affiliation
Department of Veterinary Microbiology, The Royal Veterinary and Agricultural University, Frederiksberg C, Copenhagen, Denmark.
Source
Epidemiol Infect. 2000 Oct;125(2):303-8
Date
Oct-2000
Language
English
Publication Type
Article
Keywords
Animals
DNA, Bacterial - analysis
Denmark - epidemiology
Disinfection
Electrophoresis, Gel, Pulsed-Field
Food Contamination
Humans
Hygiene
Incidence
Listeria monocytogenes - classification - genetics - pathogenicity
Listeriosis - epidemiology
Poultry Diseases - microbiology
Prevalence
Risk factors
Serotyping
Turkeys - microbiology
Abstract
Listeria monocytogenes was isolated from critical control points in a Danish turkey processing plant, from turkey products and from cases of human listeriosis. During processing in the plant the prevalence of L. monocytogenes ranged from 25.9 to 41.4%. Cleaning and disinfection decreased the prevalence to 6.4%. Isolates of L. monocytogenes were characterized by pulsed-field gel electrophoresis (PFGE) using restriction endonuclease ApaI. Identical DNA types were obtained from turkey products and the processing line even after cleaning and disinfection. Two identical DNA types were demonstrated among isolates from turkey products and human cases of listeriosis. The prevalence of L. monocytogenes in turkey products ranged from 7.3 to 17.4% for ready-to-eat products and raw products, respectively. Since none of the 27 flocks examined before slaughter sampled positive for L. monocytogenes and the prevalence increased during processing, the potential risk from turkey meat was apparently due to factory hygiene rather than intrinsic contamination of the turkeys.
PubMed ID
11117953 View in PubMed
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Influence of bovine manure as fertilizer on the bacteriological quality of organic Iceberg lettuce.

https://arctichealth.org/en/permalink/ahliterature181175
Source
J Appl Microbiol. 2004;96(4):787-94
Publication Type
Article
Date
2004
Author
G S Johannessen
R B Frøseth
L. Solemdal
J. Jarp
Y. Wasteson
L. M Rørvik
Author Affiliation
Section for Food and Feed Microbiology, National Veterinary Institute, Oslo, Norway. gro.johannessen@vetinst.no
Source
J Appl Microbiol. 2004;96(4):787-94
Date
2004
Language
English
Publication Type
Article
Keywords
Animals
Bacteria - isolation & purification
Cattle
Escherichia coli O157 - isolation & purification
Fertilizers
Food Contamination
Food Microbiology
Humans
Lettuce - growth & development - microbiology
Listeria monocytogenes - isolation & purification
Manure
Norway
Salmonella - isolation & purification
Soil Microbiology
Abstract
To investigate the bacteriological quality, and the occurrence of selected pathogenic bacteria from organically grown Iceberg lettuce fertilized with bovine manure in the form of compost, firm manure and slurry in a 2-year field trial.
Samples of soil, fertilizer, fertilized soil, seedlings and lettuce were analysed for aerobic plate counts (APC), thermotolerant coliform bacteria (TCB), Escherichia coli, E. coli O157:H7, Salmonella spp. and Listeria monocytogenes. No difference in bacteriological quality could be shown in lettuce at harvest, however, APC varied significantly from year to year in the study. The various treatments gave significantly different APC and numbers of TCB isolated from fertilized soil. Escherichia coli O157:H7 was isolated from firm manure and slurry, and soils fertilized with the respective fertilizers the second year, but were not recovered from the lettuce.
No difference in bacteriological quality could be detected in lettuce at harvest after application of various types of manure-based fertilizers grown under Norwegian conditions.
The results may indicate that the use of manure does not have considerable influence on the bacteriological quality of organic lettuce. However, others have suggested that there is a risk by using manure. There is a need for more research in the field.
PubMed ID
15012817 View in PubMed
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[Microbiological characterization of Listeria monocytogenes isolated from different sources in the Primorsky Territory]

https://arctichealth.org/en/permalink/ahliterature81936
Source
Zh Mikrobiol Epidemiol Immunobiol. 2006 Mar-Apr;(2):3-6
Publication Type
Article
Author
Zaitseva E A
Somov G P
Source
Zh Mikrobiol Epidemiol Immunobiol. 2006 Mar-Apr;(2):3-6
Language
Russian
Publication Type
Article
Keywords
Animals
Anti-Bacterial Agents - pharmacology
Environmental Microbiology
Female
Humans
Listeria Infections - microbiology
Listeria monocytogenes - classification - drug effects - isolation & purification - pathogenicity - physiology
Microbial Sensitivity Tests
Placenta - microbiology
Pregnancy
Rodentia - microbiology
Siberia
Species Specificity
Virulence
Abstract
The results of the bacteriological study of material, taken from humans, rodents, hydro-bios and environmental objects (including foodstuffs) in the Primorsky Territory, for the presence of L. monocytogenes bacteria are given. 83 bacterial strains of the genus Listeria were isolated. As revealed in this study, 25 of these strains belonged to L. monocytogenes (30.12%), 8 strains--to L. innocua (9.6%), 6 strains--to L. seeligeri (7.2%) and 2 strains--to L. ivanovii (2.4%). The greatest number of L. monocytogenes was isolated from foodstuffs and environmental objects. Some biological properties of L. monocytogenes were studied, the degree of their pathogenicity and sensitivity to antimicrobial preparations were determined.
PubMed ID
16758889 View in PubMed
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Listeria monocytogenes isolates from invasive infections: variation of sero- and genotypes during an 11-year period in Finland.

https://arctichealth.org/en/permalink/ahliterature185899
Source
J Clin Microbiol. 2003 Apr;41(4):1694-700
Publication Type
Article
Date
Apr-2003
Author
Susanna Lukinmaa
Maria Miettinen
Ulla-Maija Nakari
Hannu Korkeala
Anja Siitonen
Author Affiliation
Laboratory of Enteric Pathogens, National Public Health Institute, FIN-00300 Helsinki, Finland.
Source
J Clin Microbiol. 2003 Apr;41(4):1694-700
Date
Apr-2003
Language
English
Publication Type
Article
Keywords
Adolescent
Adult
Aged
Aged, 80 and over
Bacterial Typing Techniques
Child
Child, Preschool
Electrophoresis, Gel, Pulsed-Field
Female
Finland - epidemiology
Genetic Variation
Genotype
Humans
Infant
Infant, Newborn
Listeria monocytogenes - classification - genetics
Listeriosis - epidemiology - microbiology
Male
Middle Aged
Serotyping
Abstract
Listeria monocytogenes strains that were isolated from 314 human listeriosis cases in Finland during an 11-year period were analyzed by O:H serotyping and pulsed-field gel electrophoresis (PFGE). Serotyping divided the isolates into five serotypes, the most common being 1/2a (53%) and 4b (27%). During the study period, the number of cases caused by serotype 1/2a increased from 22% in 1990 to 67% in 2001, and those caused by serotype 4b decreased from 61 to 27%, respectively. PFGE with restriction enzyme AscI divided the strains into 81 PFGE genotypes; among strains of serotypes 1/2a and 4b, 49 and 18 PFGE types were seen, respectively. PFGE type 1 (serotype 1/2a) was the most prevalent single type (37 strains). Together with six other, closely related PFGE types, PFGE type 1 formed a group of 71 strains, representing 23% of all 314 strains. Strains of PFGE type 1 have also been isolated from cold smoked fish, suggesting a source of human infections caused by this type. Moreover, PFGE type 24 (serotype 1/2c) was significantly associated with gender: 5% of 180 male subjects but none of 132 female subjects (P = 0.012). An electronic database library was created from the PFGE profiles to make possible the prompt detection of new emerging profiles and the tracing of potential infection clusters in the future.
Notes
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PubMed ID
12682162 View in PubMed
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117 records – page 1 of 12.