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Serban D, Popa Cherecheanu A, Dascalu AM, Socea B, Vancea G, Stana D, Smarandache GC, Sabau AD, Costea DO. Hypervirulent Klebsiella pneumoniae Endogenous Endophthalmitis-A Global Emerging Disease. Life (Basel) 2021; 11:life11070676. [PMID: 34357049 PMCID: PMC8304989 DOI: 10.3390/life11070676] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 07/01/2021] [Accepted: 07/09/2021] [Indexed: 11/16/2022] Open
Abstract
The review aims to document the new emerging hypervirulent Klebsiella pneumoniae (Kp) endogenous endophthalmitis (EKE) in terms of incidence, microbiological characterization of the pathogenic agent, associated risk factors, management, and outcomes. Hypervirulent (hv) strains of KP (hvKp) induce invasive liver abscesses (LA) with specific clinical features. Up to 80–90% of cases have hepatic liver abscess as a primary focus of infection, followed by renal or lung hvKp infections. However, the incidence of EKE in patients with KPLA varied between 3.4% (19) and 12.6% (13), with a total of 95 cases of endophthalmitis in 1455 cases of KPLA (6.5%). Severe visual loss was encountered in 75% of cases, with 25% bilateral involvement. Intravitreal antibiotics are the mainstay therapeutic approach. Pars plana vitrectomy is a subject of controversy. HvKp strains present mostly natural “wild-type” antibiotic resistance profile suggestive for community-acquired infections, being highly susceptive to the third and fourth generation of cephalosporins and carbapenems. Antimicrobial resistance in hypervirulent strains was recently documented via plasmid transfer and may result in extremely difficult to treat cases. Global dissemination of these strains is a major epidemiologic shift that should be considered in the diagnostic and therapeutic management of patients with endogenous endophthalmitis. Ophthalmologic screening in patients with KPLA and other hvKp infections and a multidisciplinary therapeutic approach is extremely important for early diagnosis and preservation of the visual function.
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Affiliation(s)
- Dragos Serban
- Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy Bucharest, 020011 Bucharest, Romania; (D.S.); (A.P.C.); (G.V.); (G.C.S.)
- 4th Department of General Surgery, University Emergency Hospital Bucharest, 050098 Bucharest, Romania
| | - Alina Popa Cherecheanu
- Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy Bucharest, 020011 Bucharest, Romania; (D.S.); (A.P.C.); (G.V.); (G.C.S.)
- Department of Ophthalmology, University Emergency Hospital Bucharest, 050098 Bucharest, Romania;
| | - Ana Maria Dascalu
- Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy Bucharest, 020011 Bucharest, Romania; (D.S.); (A.P.C.); (G.V.); (G.C.S.)
- Department of Ophthalmology, University Emergency Hospital Bucharest, 050098 Bucharest, Romania;
- Correspondence: (A.M.D.); (B.S.)
| | - Bogdan Socea
- Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy Bucharest, 020011 Bucharest, Romania; (D.S.); (A.P.C.); (G.V.); (G.C.S.)
- Department of Surgery, “Sf Pantelimon” Emergency Hospital Bucharest, 021659 Bucharest, Romania
- Correspondence: (A.M.D.); (B.S.)
| | - Geta Vancea
- Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy Bucharest, 020011 Bucharest, Romania; (D.S.); (A.P.C.); (G.V.); (G.C.S.)
- “Victor Babes” Infectious and Tropical Disease Hospital Bucharest, 030303 Bucharest, Romania
| | - Daniela Stana
- Department of Ophthalmology, University Emergency Hospital Bucharest, 050098 Bucharest, Romania;
| | - Gabriel Catalin Smarandache
- Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy Bucharest, 020011 Bucharest, Romania; (D.S.); (A.P.C.); (G.V.); (G.C.S.)
- 4th Department of General Surgery, University Emergency Hospital Bucharest, 050098 Bucharest, Romania
| | - Alexandru Dan Sabau
- 3rd Clinical Department, Faculty of Medicine, “Lucian Blaga” University Sibiu, 550024 Sibiu, Romania; (A.D.S.); (D.O.C.)
| | - Daniel Ovidiu Costea
- 3rd Clinical Department, Faculty of Medicine, “Lucian Blaga” University Sibiu, 550024 Sibiu, Romania; (A.D.S.); (D.O.C.)
- Faculty of Medicine, Ovidius University Constanta, 900527 Constanta, Romania
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Abstract
Hypervirulent K. pneumoniae (hvKp) is an evolving pathotype that is more virulent than classical K. pneumoniae (cKp). hvKp usually infects individuals from the community, who are often healthy. Infections are more common in the Asian Pacific Rim but are occurring globally. hvKp infection frequently presents at multiple sites or subsequently metastatically spreads, often requiring source control. hvKp has an increased ability to cause central nervous system infection and endophthalmitis, which require rapid recognition and site-specific treatment. The genetic factors that confer hvKp's hypervirulent phenotype are present on a large virulence plasmid and perhaps integrative conjugal elements. Increased capsule production and aerobactin production are established hvKp-specific virulence factors. Similar to cKp, hvKp strains are becoming increasingly resistant to antimicrobials via acquisition of mobile elements carrying resistance determinants, and new hvKp strains emerge when extensively drug-resistant cKp strains acquire hvKp-specific virulence determinants, resulting in nosocomial infection. Presently, clinical laboratories are unable to differentiate cKp from hvKp, but recently, several biomarkers and quantitative siderophore production have been shown to accurately predict hvKp strains, which could lead to the development of a diagnostic test for use by clinical laboratories for optimal patient care and for use in epidemiologic surveillance and research studies.
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Affiliation(s)
- Thomas A Russo
- Department of Medicine, University at Buffalo-State University of New York, Buffalo, New York, USA
- Department of Microbiology and Immunology, University at Buffalo-State University of New York, Buffalo, New York, USA
- The Witebsky Center for Microbial Pathogenesis, University at Buffalo-State University of New York, Buffalo, New York, USA
- The Veterans Administration Western New York Healthcare System, Buffalo, New York, USA
| | - Candace M Marr
- Department of Medicine, University at Buffalo-State University of New York, Buffalo, New York, USA
- Erie County Medical Center, Buffalo, New York, USA
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