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Goswami K, Parvizi J. Culture-negative periprosthetic joint infection: is there a diagnostic role for next-generation sequencing? Expert Rev Mol Diagn 2019; 20:269-272. [PMID: 31858850 DOI: 10.1080/14737159.2020.1707080] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Karan Goswami
- Rothman Orthopaedic Institute, Thomas Jefferson University, Philadelphia, PA, USA
| | - Javad Parvizi
- Rothman Orthopaedic Institute, Thomas Jefferson University, Philadelphia, PA, USA
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Melicherčík P, Čeřovský V, Nešuta O, Jahoda D, Landor I, Ballay R, Fulín P. Testing the efficacy of antimicrobial peptides in the topical treatment of induced osteomyelitis in rats. Folia Microbiol (Praha) 2017; 63:97-104. [PMID: 28770427 DOI: 10.1007/s12223-017-0540-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 07/24/2017] [Indexed: 12/11/2022]
Abstract
Joint replacement infections and osteomyelitis are among the most serious complications in orthopaedics and traumatology. The risk factors for these infections are often bacterial resistance to antimicrobials. One of the few solutions available to control bacterial resistance involves antimicrobials, which have a different mechanism of action from traditional antibiotics. Antimicrobial peptides (AMP) appear to be highly promising candidates in the treatment of resistant infections. We have identified several AMP in the venom of various wild bees and designed analogues that show potent antimicrobial activity and low toxicity against eukaryotic cells. The aim of the present study was to test the efficacy of one of those synthetic peptide analogues for the treatment of acute osteomyelitis invoked in laboratory rats. Femoral cavities of 20 laboratory Wistar rats were infected with Staphylococcus aureus. After 1 week, eight rats received an injectable calcium phosphate carrier alone, another eight rats were treated with a calcium phosphate mixed with AMP, and four rats were left without any further treatment. After another week, all rats were euthanized and radiographs were made of both the operated and healthy limbs. The animals with the carrier alone exhibited more severe acute osteomyelitis on radiographs in comparison to the recipients of the calcium phosphate carrier loaded AMP and untreated infected individuals. Based on the results of the above mentioned experiment, it was concluded that when injected directly into the site of femoral acute osteomyelitis, the calcium phosphate carrier mixed with AMP reduced osteomyelitis signs visible on radiographs.
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Affiliation(s)
- Pavel Melicherčík
- Department of Orthopaedics, First Faculty of Medicine, Charles University in Prague and Motol University Hospital, V Úvalu 84, 150 06, Prague 5, Czech Republic.
| | - Václav Čeřovský
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 166 10, Prague 6, Czech Republic
| | - Ondřej Nešuta
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 166 10, Prague 6, Czech Republic
| | - David Jahoda
- Department of Orthopaedics, First Faculty of Medicine, Charles University in Prague and Motol University Hospital, V Úvalu 84, 150 06, Prague 5, Czech Republic
| | - Ivan Landor
- Department of Orthopaedics, First Faculty of Medicine, Charles University in Prague and Motol University Hospital, V Úvalu 84, 150 06, Prague 5, Czech Republic
| | - Rastislav Ballay
- Department of Orthopaedics, First Faculty of Medicine, Charles University in Prague and Motol University Hospital, V Úvalu 84, 150 06, Prague 5, Czech Republic
| | - Petr Fulín
- Department of Orthopaedics, First Faculty of Medicine, Charles University in Prague and Motol University Hospital, V Úvalu 84, 150 06, Prague 5, Czech Republic
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