Plethysmography for the assessment of pneumococcal pneumonia and passive immunotherapy in a mouse model
L De Hennezel, S Debarre, F Ramisse… - European …, 2001 - Eur Respiratory Soc
L De Hennezel, S Debarre, F Ramisse, S Delamanche, A Harf, JM Alonso, JH Calvet
European Respiratory Journal, 2001•Eur Respiratory SocThe increasing prevalence of resistance to antibiotics of Streptococcus pneumoniae, the
main causative agent of community-acquired bacterial pneumonia, necessitates the
development of both new therapeutic strategies and noninvasive methods in order to
evaluate their efficacy. The efficacy of passive immunotherapy with human intravenous
immunoglobulin (IVIG) or solvent alone, administered intranasally or intravenously, was
evaluated in a mouse model of acute pneumonia. Lung bacterial load was also evaluated …
main causative agent of community-acquired bacterial pneumonia, necessitates the
development of both new therapeutic strategies and noninvasive methods in order to
evaluate their efficacy. The efficacy of passive immunotherapy with human intravenous
immunoglobulin (IVIG) or solvent alone, administered intranasally or intravenously, was
evaluated in a mouse model of acute pneumonia. Lung bacterial load was also evaluated …
The increasing prevalence of resistance to antibiotics of Streptococcus pneumoniae, the main causative agent of community-acquired bacterial pneumonia, necessitates the development of both new therapeutic strategies and noninvasive methods in order to evaluate their efficacy.
The efficacy of passive immunotherapy with human intravenous immunoglobulin (IVIG) or solvent alone, administered intranasally or intravenously, was evaluated in a mouse model of acute pneumonia. Lung bacterial load was also evaluated, using a classical but invasive method, as was respiratory function (minute ventilation, respiratory frequency and tidal volume) using plethysmography, a simple noninvasive method commonly used in inhalation toxicology, but not previously used to assess respiratory infection.
Forty-eight hours after infectious challenge, the lung bacterial load was significantly lower in IVIG-treated mice than in untreated mice. At the same time, minute ventilation was significantly lower than reference values for untreated mice (36±3 versus 57±8 mL·min−1, p<0.01, and 31±2 versus 50±5 mL·min−1, p<0.01 for intranasal and intravenous administration of solvent, respectively) but not in mice treated with IVIG by either route of administration.
Plethysmography therefore appears to be a simple and reliable test for the follow-up of acute respiratory infection.
European Respiratory Society