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The immunomodulatory effect of antibiotics on the secretion of tumour necrosis factor alpha by peripheral blood mononuclear cells in response to Stenotrophomonas maltophilia stimulation / Efecto inmunomodulatorio de los antibióticos sobre la secreción del factor de necrosis tumoral alfa por células sanguíneas mononucleares periféricas en respuesta a la estimulación de stenotrophomonas maltophilia
Vickers, I. E; Smikle, M. F.
  • Vickers, I. E; The University of the West Indies. Department of Microbiology. JM
  • Smikle, M. F; s.af
West Indian med. j ; 55(3): 138-141, Jun. 2006.
Article in English | LILACS | ID: lil-472331
ABSTRACT
Some antibiotics have been shown to modify the host immune response. Infection with Stenotrophomonas maltophilia, is often difficult to treat due to multiresistance to antibiotics. The authors examined the effect of four commonly used antimicrobial agents (ciprofloxacin, ceftazidime, cotrimoxazole and piperacillin-tazobactam) on tumour necrosis factor alpha (TNF alpha) production by human peripheral blood mononuclear cells (PBMC) stimulated with heat-killed S maltophilia. Cotrimoxazole was the only antibiotic that suppressed TNFa secretion at clinically achievable concentrations. This may explain its use with good effect in the treatment of S maltophilia infections. However at supratherapeutic concentrations, ceftazidime and ciprofloxacin, but not piperacillin-tazobactam, also inhibited significantly the production of TNF alpha. Cotrimoxazole, in addition to its antimicrobial effect against S maltophilia, has an immunomodulatory effect on peripheral blood mononuclear cells stimulated by S maltophilia.
RESUMEN
Algunos antibióticos han mostrado ser capaces de modificar la respuesta inmune del huésped. Las infecciones con Stenotrophomonas maltophilia – un patógeno emergente – son difíciles de tratar debido a su multiresistencia a los antibióticos. Examinamos el efecto de cuatro agentes antimicrobianos comúnmente usados (ciprofloxacina, ceftazidima, cotrimoxazol, y piperacilina-tazobactam) sobre la producción del factor de necrosis tumoral alfa (FNTa) por las células sanguíneas mononucleares periféricas humanas (PBMC) estimuladas con S maltophilia inactivadas mediante calor. El cotrimoxazol – en concentraciones clínicamente posibles – fue el único antibiótico que eliminó la secreción FNTa. Esto puede explicar su uso efectivo en el tratamiento de las infecciones por S maltophilia. Sin embargo, en concentraciones supraterapéuticas, la ceftazidima y la cipro-floxacina – pero no la piperacilina-tazobactam – también inhibieron significativamente la producción de FNTa. El cotrimoxazol, además de su efecto antimicrobiano contra S maltophilia, tiene un efecto inmuno-modulatorio sobre las células sanguíneas mononucleares periféricas estimuladas por S maltophilia.
Subject(s)
Full text: Available Index: LILACS (Americas) Main subject: Piperacillin / Leukocytes, Mononuclear / Ciprofloxacin / Ceftazidime / Trimethoprim, Sulfamethoxazole Drug Combination / Tumor Necrosis Factor-alpha / Stenotrophomonas maltophilia / Immunologic Factors Limits: Humans Language: English Journal: West Indian med. j Journal subject: Medicine Year: 2006 Type: Article Affiliation country: Nigeria Institution/Affiliation country: The University of the West Indies/JM

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Full text: Available Index: LILACS (Americas) Main subject: Piperacillin / Leukocytes, Mononuclear / Ciprofloxacin / Ceftazidime / Trimethoprim, Sulfamethoxazole Drug Combination / Tumor Necrosis Factor-alpha / Stenotrophomonas maltophilia / Immunologic Factors Limits: Humans Language: English Journal: West Indian med. j Journal subject: Medicine Year: 2006 Type: Article Affiliation country: Nigeria Institution/Affiliation country: The University of the West Indies/JM