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2017-08

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cc-by-nc-nd (c) Taiwan Society of Microbiology, 2017
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/116822

Experimental study of cerebrospinal fluid tumor necrosis factor-alpha release in penicillin- and cephalosporin-resistant pneumococcal meningitis treated with different antibiotic schedules

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https://doi.org/10.1016/j.jmii.2015.07.014

Abstract

Background/Purpose: To measure the inflammatory response in terms of tumor necrosis factor-alpha (TNF-α) levels in cerebrospinal fluid (CSF), using bacteriolytic versus nonbacteriolytic antibiotic therapy and adjunctive treatment with dexamethasone in an experimental rabbit model of pneumococcal meningitis. Methods: In a rabbit model of pneumococcal meningitis, we tested CSF TNF-α levels in several samples from rabbits infected with the HUB 2349 strain and treated with ceftriaxone 100 mg/kg/d, ceftriaxone plus vancomycin 30 mg/kg/d, or daptomycin at 15 mg/kg or 25 mg/kg. Daptomycin schedules were compared with the same doses in combination with dexamethasone at 0.125 mg/kg every 12 hours over a 26-hour period. Results: The ceftriaxone group had the highest levels of TNF-α. TNF-α levels were significantly higher after ceftriaxone administration than in both daptomycin groups. The high-dose daptomycin group presented the lowest inflammatory levels in CSF samples. Adjunctive treatment with dexamethasone in this group modulated the inflammatory response, bringing down CSF TNF-α levels. Conclusion: CSF TNF-α levels were significantly lower in rabbits treated with daptomycin than in rabbits treated with ceftriaxone. Daptomycin avoided the inflammatory peak after administration observed in ceftriaxone-treated rabbits. The use of daptomycin plus dexamethasone achieved a significantly larger reduction in CSF TNF-α levels.

Subject

Citoquines, Pneumococs, Meningitis, Tumors, Antibiòtics betalactàmics

Subject (English)

Cytokines, Streptococcus pneumonia, Meningitis, Tumors, Beta lactam antibiotics

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Articles publicats en revistes (Ciències Clíniques)
Articles publicats en revistes (Institut d'lnvestigació Biomèdica de Bellvitge (IDIBELL))

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VIVAS, M., et al. Experimental study of cerebrospinal fluid tumor necrosis factor-alpha release in penicillin- and cephalosporin-resistant pneumococcal meningitis treated with different antibiotic schedules. Journal of Microbiology Immunology and Infection. 2017. Vol. 50, num. 4, pags. 435-439. ISSN 1684-1182. [consulted: 15 of August of 2026]. Available at: https://hdl.handle.net/2445/116822

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