TABLE 1.

Phenotypic characterization of P. aeruginosa isolates

Patient no.Isolate name/yr of isolationChronic infection period (yr)HypermutabilityaColony phenotypebMotilitycDetection of AHL signalsdVirulence factor productione
SwimTwitchSwarm3-O-C12-HSLC4-HSLPyocyaninProteases
114889a/19808nHpR+++++++
19193a/198412nHpR+++++++
476a/198816nHpR+++++++
15278a/199422HpS+
67903b/199927HpS+
1395b/2003 f HpS+
2374d/19857nHpR++++++
64691c/199921HpS+
31738b/198515nHpS++++++++
54514a/199727HpR++++++++++
419696/19845nHpS+
68000d/199920HpS
521168a/19846nHpR+++++++
15357a/199416nHpR+++++++
616020/199115nHpR+++++++
65608a/199923HpR+++++++
720688a/19844nHpS+
5284a/199515HpS
815761/19781nHpR++++++++++
15164/199518HpS+
  • a nHp, nonhypermutable; Hp, hypermutable.

  • b R, rough irregular colony phenotype; S, smooth regular colony phenotype.

  • c ++, motility zone ≥20 mm; +, motility zone ≥10 mm, −, motility zone ≤5 mm.

  • d Production of AHLs was detected by inspecting the bioluminescence of monitor strain; +, detectable; −, nondetectable.

  • e ++, high level; +, intermitent level; −, low level.

  • f Isolate 1395b/2003 was recovered 3 years after the patient received a lung transplant.