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. 2015 Mar 27:15:161.
doi: 10.1186/s12879-015-0899-7.

Clinical and microbiological characteristics of Klebsiella pneumoniae liver abscess in East China

Ting-ting Qu  1   2 , Jian-cang Zhou  3 , Yan Jiang  4 , Ke-ren Shi  5 , Bin Li  6 , Ping Shen  7 , Ze-qing Wei  8 , Yun-song Yu  9   10
Affiliations

Clinical and microbiological characteristics of Klebsiella pneumoniae liver abscess in East China

Ting-ting Qu et al. BMC Infect Dis. .

Abstract

Background: Klebsiella pneumoniae has been the dominant pathogen for liver abscesses in several Asian countries. Although the prevalence of K. pneumoniae liver abscess (KLA) in mainland China is increasing recently, the clinical and microbiological characteristics of KLA in China have not been elucidated.

Methods: Clinical and microbiology characteristics of 45 consecutive patients with KLA from a tertiary teaching hospital in China between June 2008 and June 2012 were retrospectively evaluated.

Results: Vast majority of the strains were susceptible to main antimicrobial agents. Most of K. pneumoniae strains from pyogenic liver abscess patients belonged to K1/K2 serotype (68.9% for K1 serotype and 20% for K2 serotype). All K. pneumoniae strains were rmpA positive, and 68.9% of these strains were magA positive. Overall, 57.8% (26/45) of K. pneumoniae strains belonged to ST23. Twenty-five of 26 ST23 K. pneumoniae isolates (96.2%) from KLA patients were magA-positive and K1 serotype. Only 28.9% (13/45) of KLA isolates exhibited hypermucoviscous phenotype, which is clinically used as the characteristic of hypervirulent K. pneumoniae (hvKP). Liver abscess sizes in patients infected with hvKP were tend to be larger than those in patients infected with cKP. There was no significant association between the microbiological and clinical characteristics including serotypes, magA and rmpA genotypes, and STs with the metastatic infection and prognosis of KLA.

Conclusions: Neither the serotypes, magA and rmpA genotypes, nor the STs of K. pneumoniae were associated with the metastatic infection and prognosis of KLA. However, further studies with larger sample are needed in the future.

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Figures

Figure 1
Figure 1
PFGE analysis of the 26 ST23 K. pneumoniae strains.
See this image and copyright information in PMC

References

    1. Lin YT, Wang FD, Wu PF, Fung CP. Klebsiella pneumoniae liver abscess in diabetic patients: association of glycemic control with the clinical characteristics. BMC Infect Dis. 2013;13:56. doi: 10.1186/1471-2334-13-56. - DOI - PMC - PubMed
    1. Siu LK, Yeh KM, Lin JC, Fung CP, Chang FY. Klebsiella pneumoniae liver abscess: a new invasive syndrome. Lancet Infect Dis. 2012;12(11):881–887. doi: 10.1016/S1473-3099(12)70205-0. - DOI - PubMed
    1. Fang CT, Lai SY, Yi WC, Hsueh PR, Liu KL, Chang SC. Klebsiella pneumoniae genotype K1: an emerging pathogen that causes septic ocular or central nervous system complications from pyogenic liver abscess. Clin Infect Dis. 2007;45(3):284–293. doi: 10.1086/519262. - DOI - PubMed
    1. Lin YC, Lu MC, Tang HL, Liu HC, Chen CH, Liu KS, et al. Assessment of hypermucoviscosity as a virulence factor for experimental Klebsiella pneumoniae infections: comparative virulence analysis with hypermucoviscosity-negative strain. BMC Microbiol. 2011;11:50. doi: 10.1186/1471-2180-11-50. - DOI - PMC - PubMed
    1. Shon AS, Bajwa RP, Russo TA. Hypervirulent (hypermucoviscous) Klebsiella pneumoniae: a new and dangerous breed. Virulence. 2013;4(2):107–118. doi: 10.4161/viru.22718. - DOI - PMC - PubMed

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