Surfactant from diving aquatic mammals.

@article{Spragg2004SurfactantFD,
  title={Surfactant from diving aquatic mammals.},
  author={Roger G. Spragg and Paul J. Ponganis and James J. Marsh and Gunnar A. Rau and Wolfgang Bernhard},
  journal={Journal of applied physiology},
  year={2004},
  volume={96 5},
  pages={
          1626-32
        }
}
Diving mammals that descend to depths of 50-70 m or greater fully collapse the gas exchanging portions of their lungs and then reexpand these areas with ascent. To investigate whether these animals may have evolved a uniquely developed surfactant system to facilitate repetitive alveolar collapse and expansion, we have analyzed surfactant in bronchoalveolar lavage fluid (BAL) obtained from nine pinnipeds and from pigs and humans. In contrast to BAL from terrestrial mammals, BAL from pinnipeds… 
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Phosphatidylcholine composition of pulmonary surfactant from terrestrial and marine diving mammals
The composition of pulmonary surfactant from diving mammals
The evolution of a physiological system: The pulmonary surfactant system in diving mammals
The surface activity of pulmonary surfactant from diving mammals
Respiration and Diving Physiology
Dipalmitoylphosphatidylcholine is not the major surfactant phospholipid species in all mammals.
  • C. Lang, A. Postle, +7 authors C. Daniels
  • Biology
    American journal of physiology. Regulatory, integrative and comparative physiology
  • 2005
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There is no single PL molsp composition that functions optimally in all mammals; rather, surfactant from each animal is unique and tailored to the biology of that animal.
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Respiration refers to gas exchange between an animal and the environment. Except for sea otters, which have unusually large lungs, the lung volumes of marine and terrestrial mammals scale…
Environmental Selection Pressures Shaping the Pulmonary Surfactant System of Adult and Developing Lungs
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The major discoveries concerning how temperature, pressure and hypoxia have influenced the pulmonary surfactant system are summarised.
Yet to Come Diving Mammals
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The ability of diving mammals to forage at depth on a breath hold of air is dependent on gas exchange, both in the lung and in peripheral tissues, which contributes to the remarkable breath-hold capacities of these animals.
Respiratory function and mechanics in pinnipeds and cetaceans
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Improved understanding of respiratory physiology under these conditions will be better able to define the physiological constraints imposed on these animals, and how these limitations may affect the survival of marine mammals in a changing environment.
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