High specificity of the Salmonella Pullorum/Gallinarum rapid plate agglutination test despite vaccinations against Salmonella Enteritidis and Salmonella Typhimurium

2021 ◽  
pp. 1-13
Author(s):  
Christiaan ter Veen ◽  
Anneke Feberwee ◽  
Marieke Augustijn ◽  
Sjaak de Wit
2012 ◽  
Vol 36 (0E) ◽  
pp. 84-88
Author(s):  
Ekram A. Al-Samarrae

Salmonella typhimurium and salmonella enteritidis were isolated from infected goat andprepared an antigens of whole cell sonicated antigen of S.typhimurium(WCS.Ag.S.typhimurium ),whole cell sonicated antigen of S.enteritidis (WCS.Ag.S.entertidis) and combination of whole cell sonicated antigen (Salmonella typhimurium andSalmonella enteritidis) (CWS.Ag) . Their efficacy was evaluated by using tube agglutinationtest and enzyme linked immune sorbent assay (ELISA). Twenty rabbits were randomlydivided into four groups; the 1st group was immunized by WCS. Ag - Salmonella enteritidis,2nd group immunized by (WCS Ags .typhimurium), 3rd group immunized by CWCS.Agcompound and 4th left as control group which injected by physiological buffer saline (pH7.2). The antibody titer was increased in after the day 12, first, second and third months ofimmunization by agglutination test. IgG concentration was done by ELISA at the same time;which were recorded a higher significant differences (p˂ 0.01) at the first month in the groupimmunized by CWS Ag (449.65 ±38.6 1ng/ml IgG and 952± 20.85 antibodies titer )compared with other immunized groups ( WCS – Ag – S. enteritidis andWCS.Ag.S.typhimurium ). Also, the IgG concentration and antibodies titer are still higher inthe second and the third months in the immunized group by CWCS.Ag. 218.90± 6.69ng/ml,528± 68.58 and 89.55± 2.63ng/ml, 280± 49.98 respectively with significant differences (p˂0.01) compared with the immunized groups (WCS.Ag.S. entertidis and WCS. Ag.S.typhimurium) and also, they are significant (p˂ 0.01) when compared with the control groupResearch


Author(s):  
Anushri Tiwari ◽  
Madhu Swamy ◽  
Yamini Verma ◽  
Amita Dubey

Background: Paratyphoid infection of poultry is caused by non-host adapted motile salmonellae and are responsible for numerous cases of food borne illness worldwide. The present study was carried out from July 2019 to February 2020 in Jabalpur to know the occurrence and pathology of paratyphoid bacteria in poultry. Methods: Whole blood agglutination test was performed to know the prevalence of salmonellosis in and areas surrounding Jabalpur region and pooled fecal samples were collected from poultry farms to perform microbe culture and biochemical characterization. Serotyping of Salmonella isolates was done using polyvalent antisera. Necropsy examination was conducted to observe gross and histopathological lesions. Conclusion: Rapid whole blood agglutination test determined the percent prevalence of Salmonella as 28.0% from 25 private poultry outlets. The percent prevalence of salmonellosis by collecting pooled fecal samples from 15 broiler and 11 layer farms was recorded as 20.0% and 45.4% respectively. Salmonellosis was recorded in 1.58% of total necropsy cases of birds examined for gross and histopathological studies. Polyvalent antisera diagnosed 27.27% motile paratyphoid salmonellae, out of which 18.18% tested positive for Salmonella Enteritidis while 9.09% tested positive for Salmonella Typhimurium. Birds with paratyphoid infection showed hepatomegaly, discoloration, hemorrhagic and necrotic foci in liver and various grades of hemorrhagic to catarrhal enteritis were recorded.


2021 ◽  
Vol 9 (2) ◽  
pp. 398
Author(s):  
Dong Chan Moon ◽  
Su-Jeong Kim ◽  
Abraham Fikru Mechesso ◽  
Hee Young Kang ◽  
Hyun-Ju Song ◽  
...  

Colistin is considered the last resort for the treatment of multi-drug resistant Gram-negative bacterial infections. We studied colistin resistance and the mcr-1 gene carriage in Salmonella isolates recovered from food animals in South Korea between 2010 and 2018. Colistin resistance was found in 277 isolates, predominantly in Salmonella Enteritidis (57.1%) and Salmonella Gallinarum (41.9%). However, the mcr-1 gene was identified in only one colistin-resistant Salmonella Typhimurium (MIC = 16 µg/mL) isolated from a healthy pig. The mcr-1 carrying isolate presented additional resistance to multiple antimicrobials. The strain belonged to sequence type (ST)19 and carried various virulence factor genes that are associated with adhesion and invasion of Salmonella into intestinal epithelial cells, as well as its survival in macrophages. The mcr-1 gene was identified on an IncI2 plasmid and it was also transferred to the E. coli J53 recipient strain. The mcr-1-carrying plasmid (pK18JST013) in this study was closely related to that previously reported in S. Indiana (pCFSA664-3) from chicken in China. This is the first report of mcr-1 carrying S. Typhimurium in South Korea. The finding indicates the importance of regular screening for the presence of the mcr-1 gene in S. Typhimurium in food animals to prevent the spread to humans.


ACS Omega ◽  
2017 ◽  
Vol 2 (11) ◽  
pp. 8282-8289 ◽  
Author(s):  
Gianluigi De Benedetto ◽  
Paola Cescutti ◽  
Carlo Giannelli ◽  
Roberto Rizzo ◽  
Francesca Micoli

1974 ◽  
Vol 20 (4) ◽  
pp. 551-557
Author(s):  
Paul W. Stiffler ◽  
D. E. Schoenhard

The physical basis of the donor property of Salmonella pullorum donor strains MS8300, MS830, and MS831 carrying the F77 factor from Salmonella typhimurium was investigated by dye-buoyant density equilibrium centrifugation and zonal centrifugation in neutral sucrose gradients. Centrifugation of the MS8300 and MS831 closed circular DNA material in a 20 to 31% neutral sucrose gradient resulted in a profile having one sharp peak of radioactivity with a sedimentation coefficient of 17 S and a broad peak extending from 65 to 70 S. The 17- and 65-S species were isolated from the isogenic F− strain MS83. These appeared identical with those isolated previously in S. pullorum MS53 as the cryptic plasmids PO-1 and PO-2 respectively. Cosedimentation of differentially labeled F77 DNA and the lysate containing the 65-S and 70-S species suggested that the 70-S species is the autonomous F77 factor in strains MS8300 and MS831. Lysates of MS830 similarly treated produced a profile containing the 17-S molecule and possibly some 70-S molecules but no 65-S molecules. It was concluded that the F77 factor was integrated in most cells and that the covalently closed circular state of PO-2 plasmid was lost. The mutation in the cysE gene of the F77 factor carried by MS831 had no apparent effect on the covalently closed circular nature of PO-2 plasmid, although F77 no longer seemed to mobilize the chromosome from the cysE locus.


Toxicon ◽  
1983 ◽  
Vol 21 (6) ◽  
pp. 785-796 ◽  
Author(s):  
S.B. Baloda ◽  
A. Faris ◽  
K. Krovacek ◽  
T. Wadström

2020 ◽  
Vol 39 (03) ◽  
Author(s):  
VĂN HỒNG THIỆN ◽  
LÊ BÍCH TRÂM ◽  
NGUYỄN THANH LAN ◽  
HỒ NGUYỄN HOÀNG YẾN ◽  
LƯU HỒNG TRƯỜNG ◽  
...  

Nghiên cứu này đã xác định được mẫu nghiên cứu thu tại Vườn quốc gia Phú Quốc là loài Homalomena pierreana. Thông qua kỹ thuật sắc ký ghép khối phổ, 10 hợp chất thuộc nhóm sesquiterpene có trong cao chiết ethanol của thân rễ loài H. pierreana đã được xác định. Ngoài ra, cao chiết ethanol từ mẫu nghiên cứu cũng cho thấy khả năng kháng lại 6 chủng vi khuẩn kiểm định là Bacillus subtilis, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Salmonella enteritidis và Salmonella typhimurium.


PLoS ONE ◽  
2018 ◽  
Vol 13 (10) ◽  
pp. e0206316 ◽  
Author(s):  
Raymond Heymans ◽  
Amir Vila ◽  
Caroliene A. M. van Heerwaarden ◽  
Claudia C. C. Jansen ◽  
Greetje A. A. Castelijn ◽  
...  

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