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  • Title: Changes in lung glycosaminoglycans during postresectional lung growth.
    Author: Mueller MP, Thet LA.
    Journal: J Appl Physiol (1985); 1987 Sep; 63(3):1033-9. PubMed ID: 3115945.
    Abstract:
    We studied changes in glycosaminoglycan content and concentration during postresectional compensatory lung growth in adult male rats. After right trilobectomy, left lung dry weight was normal at 4 days, increased 74% between 4 and 7 days, and more slowly over the next week. Total glycosaminoglycan content per milligram dry lung weight increased early and rapidly, reaching 189% of the control value at 4 days postresection. The magnitude and temporal pattern of increase was different for different glycosaminoglycan subtypes. Hyaluronate and chondroitin sulfate content were increased by 198 and 113%, respectively, at 4 days, with no further increases subsequently. Heparan sulfate content increased more slowly and steadily, and dermatan sulfate concentrations did not change. At 4 days, the percent of total glycosaminoglycans that was hyaluronate was almost doubled, whereas the percent that was heparan sulfate was decreased; by day 7 the percent compositions had returned to normal. We conclude that changes in glycosaminoglycans occur early in postresectional lung growth and speculate that they may play a facilitatory role.
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