Table 1.
Strain ID | Strains | Sources of strains (No. of strains)a | Duplex MCDA-LFB b | |
---|---|---|---|---|
pgaD | blaOXA-23-like | |||
1 | Acinetobacter baumannii | SG-AB001 | P | P |
2–50 | Acinetobacter baumannii | Isolated strain(49) | P | P |
51–53 | Acinetobacter baumannii | Isolated strains (3) | P | N |
54 | Listeria monocytogenes | Isolated strains (1) | N | N |
55 | Bacillus cereus | Isolated strain (1) | N | N |
56 | Citrobacter braakii | Isolated strain (1) | N | N |
57 | Citrobacter freundii | Isolated strain (1) | N | N |
58 | Corynebacterium ammoniagenes | Isolated strain (1) | N | N |
59 | Escherichia coli | ATCC35218 | N | N |
60 | Klebsiella pneumoniae | ATCC2146 | N | N |
61 | Proteus mirabilis | Isolated strain (1) | N | N |
62 | Providencia rettgeri | Isolated strain (1) | N | N |
63 | Pseudomonas aeruginosa | ATCC27853 | N | N |
64 | Serratia marcescens | Isolated strain (1) | N | N |
65 | Serratia marcescens | Isolated strain (1) | N | N |
66 | Staphylococcus aureus | ATCC29213 | N | N |
67 | Staphylococcus epidermidis | Isolated strain (1) | N | N |
68 | Streptococcus salivarius | Isolated strain (1) | N | N |
aATCC, American Type Culture Collection; SG, Shougang Hospital; AB, Acinetobacter baumannii; bP, positive; N, negative. Only these strains belonging to the A. baumannii could be detected by the MCDA-LFB technique, indicating the extremely high selectivity of the method. Particularly, pgaD and blaOXA-23-like genes can be simultaneously detected and correctly identified in a reaction vessel.