Morphometry and allometry of the postnatal marsupial lung development: an ultrastructural study

Burri, Peter Hermann; Haenni, Beat; Tschanz, Stefan A.; Makanya, Andrew Ndegwa (2003). Morphometry and allometry of the postnatal marsupial lung development: an ultrastructural study. Respiratory physiology & neurobiology, 138(2-3), pp. 309-324. Elsevier 10.1016/S1569-9048(03)00197-6

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An utrastructural morphometric study of the postnatally remodelling lungs of the quokka wallaby (Setonix brachyurus) was undertaken. Allometric scaling of the volumes of the parenchymal components against body mass was performed. Most parameters showed a positive correlation with body mass in all the developmental stages, except the volume of type II pneumocytes during the alveolar stage. The interstitial tissue and type II cell volumes increased slightly faster than body mass in the saccular stage, their growth rates declining in the alveolar stage. Conversely, type I pneumocyte volumes increased markedly in both the saccular and alveolar stages. Both capillary and endothelial volumes as well as the capillary and airspace surface areas showed highest rates of increase during the alveolar stage, at which time the rate was notably higher than that of the body mass. The pulmonary diffusion capacity increased gradually, the rate being highest in the alveolar stage and the adult values attained were comparable to those of eutherians.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Pre-clinic Human Medicine > Institute of Anatomy

UniBE Contributor:

Burri, Peter Hermann; Haenni, Beat and Tschanz, Stefan A.

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1569-9048

Publisher:

Elsevier

Language:

English

Submitter:

Stefan Andreas Tschanz

Date Deposited:

18 Mar 2014 09:12

Last Modified:

13 Jan 2015 08:09

Publisher DOI:

10.1016/S1569-9048(03)00197-6

PubMed ID:

14609519

BORIS DOI:

10.7892/boris.40869

URI:

https://boris.unibe.ch/id/eprint/40869

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