Klebsiella pneumoniae Isolates from Meningitis: Epidemiology, Virulence and Antibiotic Resistance
Klebsiella pneumoniae (KP) resistance to broad-spectrum cephalosporin (BSC) in meningitis is important because of limited therapeutic options. To investigate the antibiotic resistance, virulence and epidemiology of KP in meningitis, we conducted a retrospective study for 33 non-metastatic isolates,...
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Veröffentlicht in: | Scientific reports 2017-07, Vol.7 (1), p.6634-10, Article 6634 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Klebsiella pneumoniae
(KP) resistance to broad-spectrum cephalosporin (BSC) in meningitis is important because of limited therapeutic options. To investigate the antibiotic resistance, virulence and epidemiology of KP in meningitis, we conducted a retrospective study for 33 non-metastatic isolates, including primary meningitis (
n
= 20) and post-craniotomy meningitis (
n
= 13) collected from 1999 to 2013. BSC resistance was found in 9 (27.3%) isolates, all from post-craniotomy meningitis, harboring
bla
SHV-5
(
n
= 6),
bla
CMY-2
(
n
= 2),
bla
DHA-1
(
n
= 2), and
bla
TEM-1B
(
n
= 1). Positive virulence factors were hypermucoviscosity (
n
= 22), larger bacterial size (
n
= 24), virulent capsule serotypes (
n
= 24, K2, 11; K1, 5; K57, 3; K5, 2; K20, 2 and K54, 1),
rmpA
(
n
= 23),
rmpA
2
(
n
= 20), aerobactin gene (
n
= 22) and high-grade serum resistance (
n
= 23, 69.7%). Higher mouse lethality (LD
50
|
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ISSN: | 2045-2322 2045-2322 |
DOI: | 10.1038/s41598-017-06878-6 |