Efficacy of Two Avian Salmonella-Immune Lymphokines against Liver Invasion in Chickens by Salmonella Serovars with Different O-Group Antigens

1997 ◽  
Vol 41 (1) ◽  
pp. 181 ◽  
Author(s):  
Richard L. Ziprin ◽  
Michael H. Kogut
Keyword(s):  
Salmonella Serovars ◽  
Immune Lymphokines

Activation of isolated heterophils from chicks stimulated in vivo with salmonella enteritidis-immune lymphokines

1996 ◽  
Vol 54 ◽  
pp. 760-761
Author(s):  
R. B. Moyes ◽  
R. E. Droleskey ◽  
M. H. Kogut ◽  
J. R. DeLoach
Keyword(s):  
Lamina Propria ◽  
Intestinal Mucosa ◽  
Salmonella Enteritidis ◽  
Intestinal Tract ◽  
Polymorphonuclear Cells ◽  
Subclinical Infection ◽  
Egg Products ◽  
Immune Lymphokines ◽  
Organ Invasion

Salmonella enteritidis (SE) is of great concern to the poultry industry due to the organism's ability to penetrate the intestinal mucosa of the laying hen and subsequently colonize the ovaries and yolk membrane. The resultant subclinical infection can lead to SE infection of raw eggs and egg products. Interference with the ability of the organism to invade has been linked to the activation and recruitment of inflammatory polymorphonuclear cells, heterophils, to the lamina propria of the intestinal tract.Recently it has been established that heterophil activation and increased resistance to SE organ invasion can be accomplished by the administration of SE-immune lymphokines (SE-ILK) obtained from supernatants of concanavalin-A stimulated SE immune T lymphocytes from SE hyperimmunized hens. Invasion of SE into the lamina propria provides a secondary signal for directing activated heterophils to the site of SE invasion.

Evaluating changes in Salmonella serovars associated with swine over the past 20 years

2017 ◽  
Author(s):  
Annette O'Connor ◽  
Chaohui Yuan ◽  
Adam Krull ◽  
Chong Wang ◽  
Paula Cray ◽  
...  
Keyword(s):  
The Past ◽  
Salmonella Serovars

scholarly journals Cloning and nucleotide sequence of the gene (citC) encoding a citrate carrier from several Salmonella serovars.

1992 ◽  
Vol 267 (14) ◽  
pp. 9559-9564
Author(s):  
N Ishiguro ◽  
H Izawa ◽  
M Shinagawa ◽  
T Shimamoto ◽  
T Tsuchiya
Keyword(s):  
Nucleotide Sequence ◽  
Citrate Carrier ◽  
Salmonella Serovars

scholarly journals Salmonella in Captive Reptiles and Their Environment—Can We Tame the Dragon?

2021 ◽  
Vol 9 (5) ◽  
pp. 1012
Author(s):  
Magdalena Zając ◽  
Magdalena Skarżyńska ◽  
Anna Lalak ◽  
Renata Kwit ◽  
Aleksandra Śmiałowska-Węglińska ◽  
...  
Keyword(s):  
Public Health ◽  
Antimicrobial Resistance ◽  
Detection Rate ◽  
Large Scale ◽  
Isolation And Identification ◽  
Epidemiological Analysis ◽  
High Occurrence ◽  
Salmonella Serovars ◽  
Floor Surfaces

Reptiles are considered a reservoir of a variety of Salmonella (S.) serovars. Nevertheless, due to a lack of large-scale research, the importance of Reptilia as a Salmonella vector still remains not completely recognized. A total of 731 samples collected from reptiles and their environment were tested. The aim of the study was to assess the prevalence of Salmonella in exotic reptiles kept in Poland and to confirm Salmonella contamination of the environment after reptile exhibitions. The study included Salmonella isolation and identification, followed by epidemiological analysis of the antimicrobial resistance of the isolates. Implementation of a pathway additional to the standard Salmonella isolation protocol led to a 21% increase in the Salmonella serovars detection rate. The study showed a high occurrence of Salmonella, being the highest at 92.2% in snakes, followed by lizards (83.7%) and turtles (60.0%). The pathogen was also found in 81.2% of swabs taken from table and floor surfaces after reptile exhibitions and in two out of three egg samples. A total of 918 Salmonella strains belonging to 207 serovars and serological variants were obtained. We have noted the serovars considered important with respect to public health, i.e., S. Enteritidis, S. Typhimurium, and S. Kentucky. The study proves that exotic reptiles in Poland are a relevant reservoir of Salmonella.

scholarly journals Salmonella Bacteriophage Diversity According to Most Prevalent Salmonella Serovars in Layer and Broiler Poultry Farms from Eastern Spain

Animals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1456
Author(s):  
Sandra Sevilla-Navarro ◽  
Pablo Catalá-Gregori ◽  
Clara Marin
Keyword(s):  
Point Of View ◽  
Poultry Production ◽  
Poultry Products ◽  
Production Type ◽  
Poultry Farms ◽  
Commercial Poultry ◽  
Salmonella Serovars ◽  
The Impact ◽  
Phage Isolation ◽  
Salmonella Phage

The exploration of novel nonantibiotic interventions in the field, such as the use of bacteriophages, is necessary to avoid the presence of Salmonella. Bacteriophages are a group of viruses widely distributed in nature, strictly associated with the prokaryotic cell. Researchers have demonstrated the success of phage therapy in reducing Salmonella counts in poultry products. However, the impact that phage concentration in the environment may have against certain Salmonella serovars is not well understood. Therefore, the aim of this study was to assess Salmonella phage prevalence in commercial poultry farms in terms of the production type: layers or broilers. The most prevalent Salmonella serovars isolated in poultry production were used for phage isolation. Salmonella specific phages were isolated from 141 layer and broiler farms located in the Valencia region during 2019. Analysis of the samples revealed that 100% presented Salmonella phages, the most prevalent being against serovar S. Enteritidis (93%), followed by S. Virchow (59%), S. Typhimurium (55%), S. Infantis (52%) and S. Ohio (51%). These results indicate that poultry farms could represent an important source of Salmonella phages. Nevertheless, further studies are needed to assess the epidemiology of phages against other serovars present in other countries and their diversity from the point of view of molecular studies.

Epidemiology, Pathogenesis, Genoserotyping, Antimicrobial Resistance, and Prevention and Control of Non-Typhoidal Salmonella Serovars

2017 ◽  
Vol 4 (1) ◽  
pp. 43-53 ◽  
Author(s):  
Gitanjali Arya ◽  
Robert Holtslander ◽  
James Robertson ◽  
Catherine Yoshida ◽  
Janet Harris ◽  
...  
Keyword(s):  
Antimicrobial Resistance ◽  
Prevention And Control ◽  
Salmonella Serovars ◽  
And Control

Growth of Salmonella serovars in hens’ egg albumen as affected by storage prior to inoculation

2004 ◽  
Vol 21 (1) ◽  
pp. 25-32 ◽  
Author(s):  
Winy Messens ◽  
Leen Duboccage ◽  
Koen Grijspeerdt ◽  
Marc Heyndrickx ◽  
Lieve Herman
Keyword(s):  
Egg Albumen ◽  
Salmonella Serovars
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