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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
2005-8-1
pubmed:abstractText
Haemolysins of Salmonella are important due to their probable role in pathogenesis of systemic salmonellosis and use in sub-serovar level typing. The present study was undertaken to determine haemolytic potential of Salmonella Gallinarum strains through phenotypic and genotypic methods. Amplification of haemolysin gene (clyA) and cytolysin gene (slyA) was attempted in order to determine their role in haemolysin production. Study on 94 strains of S. Gallinarum revealed the production of two types of haemolysis viz., beneath the colony haemolysis (BCH) or contact haemolysis and clear zone haemolysis (CZH). Haemolysis was observed on blood agar prepared with blood of cattle, buffalo, sheep, goat, horse, rabbit, guinea pig, fowl, and human blood group A, B, AB and O. Although, haemolysis was also observed on blood agar prepared with whole blood, clarity of zone was more evident on blood agar made from washed erythrocytes. Clear zone haemolysis was best observed on blood agar prepared with washed erythrocytes of goat and a total of 12% (11 of 94) S. Gallinarum strains under study produced CZH on it. The clyA gene could not be detected in any of the 94 strains under study, while slyA gene could be amplified uniformly irrespective of haemolytic potential (CZH) and haemolytic pattern (BCH) of the strains. The study suggested that the two types of haemolysis (CZH and BCH) observed among S. Gallinarum strains may not be due to either slyA or clyA gene products and thus there may be some other gene responsible for haemolytic trait in Gallinarum serovar. Different haemolytic patterns of strains under study indicated multiplicity of haemolysins in S. Gallinarum.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0019-5189
pubmed:author
pubmed:issnType
Print
pubmed:volume
43
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
626-30
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Novel haemolysins of Salmonella enterica spp. enterica serovar Gallinarum.
pubmed:affiliation
National Salmonella Centre (Vet), Division of Bacteriology and Mycology, Indian Veterinary Research Institute, Izatnagar 243 122, India.
pubmed:publicationType
Journal Article, In Vitro, Research Support, Non-U.S. Gov't