alexa Lung function in premature lambs and rabbits treated with a recombinant SP-C surfactant.
Immunology

Immunology

Journal of Allergy & Therapy

Author(s): Davis AJ, Jobe AH, Hfner D, Ikegami M

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Abstract We evaluated the efficacy of a recombinant surfactant protein-C (rSP-C) surfactant in vitro and in vivo, using ventilated preterm lambs and rabbits. The surface tension measured with a Wilhelmy balance of the rSP-C surfactant was lower than the surface tension of natural sheep surfactant (containing SP-B and SP-C). The rSP-C and natural surfactants were equivalently sensitive to inhibition by plasma. Over a 5-h study period, lambs treated with 100 mg/kg rSP-C and natural surfactants at birth had similar PCO2, lung mechanics, and FRC values. Indicators of injury also were not different. In preterm rabbits ventilated with 3 cm H2O positive end-expiratory pressure (PEEP), similar compliance responses were measured for the rSP-C and natural surfactant. Large-aggregate surfactants recovered from alveolar washes of the lambs treated with rSP-C or natural surfactant retained their function when tested in preterm rabbits. In conclusion, the rSP-C surfactant was effective in preterm animals with surfactant deficiency. This article was published in Am J Respir Crit Care Med and referenced in Journal of Allergy & Therapy

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