Molecular Typing of Salmonella enterica Serovars using Two PFGE Systems Geraldine Doran Martin...

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Molecular Typing of Salmonella enterica Serovars using Two PFGE Systems Geraldine Doran Martin Cormican Interim Salmonella Reference Laboratory Ireland

Transcript of Molecular Typing of Salmonella enterica Serovars using Two PFGE Systems Geraldine Doran Martin...

Page 1: Molecular Typing of Salmonella enterica Serovars using Two PFGE Systems Geraldine Doran Martin Cormican Interim Salmonella Reference Laboratory Ireland.

Molecular Typing of Salmonella enterica Serovars using Two PFGE Systems

Geraldine DoranMartin Cormican

Interim Salmonella Reference LaboratoryIreland

Page 2: Molecular Typing of Salmonella enterica Serovars using Two PFGE Systems Geraldine Doran Martin Cormican Interim Salmonella Reference Laboratory Ireland.

Serovars S. KedougouS. Bredeney

Systems Pharmacia Gene NavigatorBio-Rad CHEF Mapper (PulseNet)

Molecular Typing of S.enterica Serovars using two PFGE Systems

Page 3: Molecular Typing of Salmonella enterica Serovars using Two PFGE Systems Geraldine Doran Martin Cormican Interim Salmonella Reference Laboratory Ireland.

Pharmacia: 4 Subtypes

CHEF Mapper: 7 Subtypes

S. Kedougou Results

Page 4: Molecular Typing of Salmonella enterica Serovars using Two PFGE Systems Geraldine Doran Martin Cormican Interim Salmonella Reference Laboratory Ireland.

Molecular Typing of S.enterica Serovars using two PFGE Systems

Comparison of 2 Systems

Time Pharmacia 6 DaysCHEF Mapper 4 Days (3)

Reproducibility Both reproducible

Result Quality CHEF MapperEasier to intrepretStandardised

Page 5: Molecular Typing of Salmonella enterica Serovars using Two PFGE Systems Geraldine Doran Martin Cormican Interim Salmonella Reference Laboratory Ireland.

PFGE of S. Kedougou using Pharmacia

λ A1 A1 A2 λ A3 A3 A3 A4 λ ? A4 A4 A1 λ

48.5

97.0

145

194

242

291

339

kb

Page 6: Molecular Typing of Salmonella enterica Serovars using Two PFGE Systems Geraldine Doran Martin Cormican Interim Salmonella Reference Laboratory Ireland.

PFGE of S. Kedougou using

CHEF Mapper

λ A1 A6 A2 λ A3 A3 A5 A4 λ A5 A5 A7 A1 λ

48

97

145

194

242

291339

kb

Page 7: Molecular Typing of Salmonella enterica Serovars using Two PFGE Systems Geraldine Doran Martin Cormican Interim Salmonella Reference Laboratory Ireland.

PFGE of S. Kedougou

CHEF Mapper Pharmacia

4897

145

242

339

kb Λ A1 A1 A2 λ A3 A3 A3 A4 λ A4 A4 A4 A1 λ λ A1 A1 A2 λ A3 A3 A3 A4 λ A4 A4 A4 A1 λ

Page 8: Molecular Typing of Salmonella enterica Serovars using Two PFGE Systems Geraldine Doran Martin Cormican Interim Salmonella Reference Laboratory Ireland.

S Kedougou Pharmacia Reproducibility

λ A1 A1 A2 λ A3 A3 A3 A4 λ ? A4 A4 A1 λ λ A1 A1 A2 λ A3 A3 A3 A4 λ A4 A4 A4 A1 λ

Run 1 Run 2

48

97

145

194

242

291

339

kb

Page 9: Molecular Typing of Salmonella enterica Serovars using Two PFGE Systems Geraldine Doran Martin Cormican Interim Salmonella Reference Laboratory Ireland.

PFGE of S. Bredeney

48

97

145194

242291

kb λ A A2 A3 λ B C D E λ F G λ A A2 A3 B C D E F G λ

CHEF Mapper Pharmacia

Page 10: Molecular Typing of Salmonella enterica Serovars using Two PFGE Systems Geraldine Doran Martin Cormican Interim Salmonella Reference Laboratory Ireland.

Dendogram of S. Kedougou using Bionumerics Software

Page 11: Molecular Typing of Salmonella enterica Serovars using Two PFGE Systems Geraldine Doran Martin Cormican Interim Salmonella Reference Laboratory Ireland.

CHEF Mapper QuickerEasier to IntrepretMore ReproducibleStandardised (PulseNet)

Conclusions