Einfluss von Surfactant auf das pulmonale Entzundungsgeschehen und die Elastasefreisetzung bei experimenteller neonataler B-Streptokokken-Pneumonie

Translated title of the contribution: Influence of surfactant on pulmonary inflammatory response and release of elastase in experimental neonatal group B streptococcal pneumonia

E. Herting*, C. P. Speer, B. Sun, C. Jarstrand, T. Curstedt, B. Robertson

*Corresponding author for this work
2 Citations (Scopus)

Abstract

Purpose: We analyzed the influence of surfactant on inflammatory response, bacterial proliferation and tissue levels of free elastase, a key neutrophil enzyme, in experimental neonatal group B-streptococcal pneumonia. Method: Near-term tracheotomized rabbit fetuses were infected intratracheally with streptococci and ventilated for 5 h. Following the infection the animals received either surfactant (Curosurf 200 mg/kg) or saline (2.5 ml/kg). Controls (n = 11) received only saline. One group of animals (n = 8) was investigated immediately following the injection of bacteria. Results: Surfactant-treated animals demonstrated mitigation of bacterial growth and less marked inflammatory changes on light microscopic examination when compared with infected littermate controls receiving saline. In addition, significantly lower tissue levels of elastase could be demonstrated in the surfactant-treated group (mean ± SEM: 4.22 ± 0.95 vs 8.02 ± 1.28 μg/g lung; p < 0.05). Animals treated with saline alone and animals investigated immediately following infection had significantly (p < 0.05) lower tissue levels of free elastase in lung homogenate (2.97 ± 0.57 and 2.01 ± 0.45 μg/g lung, respectively). Conclusions: Based on our results we speculate that surfactant plays an important role in the regulation of inflammatory response in neonatal infectious lung disease.

Translated title of the contributionInfluence of surfactant on pulmonary inflammatory response and release of elastase in experimental neonatal group B streptococcal pneumonia
Original languageGerman
JournalMonatsschrift fur Kinderheilkunde
Volume144
Issue number12
Pages (from-to)1319-1325
Number of pages7
ISSN0026-9298
DOIs
Publication statusPublished - 12.1996

Research Areas and Centers

  • Academic Focus: Center for Brain, Behavior and Metabolism (CBBM)

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