Normalisation of surfactant protein -A and -B expression in the lungs of low birth weight lambs by 21 days old.
Intrauterine growth restriction (IUGR) induced by placental restriction (PR) in the sheep negatively impacts lung and pulmonary surfactant development during fetal life. Using a sheep model of low birth weight (LBW), we found that there was an increase in mRNA expression of surfactant protein (SP)-A...
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2017-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC5614422?pdf=render |
| _version_ | 1818965401281757184 |
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| author | Jia Yin Soo Sandra Orgeig Erin Victoria McGillick Song Zhang I Caroline McMillen Janna L Morrison |
| author_facet | Jia Yin Soo Sandra Orgeig Erin Victoria McGillick Song Zhang I Caroline McMillen Janna L Morrison |
| author_sort | Jia Yin Soo |
| collection | DOAJ |
| description | Intrauterine growth restriction (IUGR) induced by placental restriction (PR) in the sheep negatively impacts lung and pulmonary surfactant development during fetal life. Using a sheep model of low birth weight (LBW), we found that there was an increase in mRNA expression of surfactant protein (SP)-A, -B and -C in the lung of LBW lambs but no difference in the protein expression of SP-A or -B. LBW also resulted in increased lysosome-associated membrane glycoprotein (LAMP)-3 mRNA expression, which may indicate an increase in either the density of type II Alveolar epithelial cells (AEC) or maturity of type II AECs. Although there was an increase in glucocorticoid receptor (GR) and 11β-hydroxysteroid dehydrogenase (11βHSD)-1 mRNA expression in the lung of LBW lambs, we found no change in the protein expression of these factors, suggesting that the increase in SP mRNA expression is not mediated by increased GC signalling in the lung. The increase in SP mRNA expression may, in part, be mediated by persistent alterations in hypoxia signalling as there was an increase in lung HIF-2α mRNA expression in the LBW lamb. The changes in the hypoxia signalling pathway that persist within the lung after birth may be involved in maintaining SP production in the LBW lamb. |
| first_indexed | 2024-12-20T13:16:25Z |
| format | Article |
| id | doaj.art-f3fe5717334f47eba1c15546d605c84e |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-20T13:16:25Z |
| publishDate | 2017-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-f3fe5717334f47eba1c15546d605c84e2022-12-21T19:39:32ZengPublic Library of Science (PLoS)PLoS ONE1932-62032017-01-01129e018118510.1371/journal.pone.0181185Normalisation of surfactant protein -A and -B expression in the lungs of low birth weight lambs by 21 days old.Jia Yin SooSandra OrgeigErin Victoria McGillickSong ZhangI Caroline McMillenJanna L MorrisonIntrauterine growth restriction (IUGR) induced by placental restriction (PR) in the sheep negatively impacts lung and pulmonary surfactant development during fetal life. Using a sheep model of low birth weight (LBW), we found that there was an increase in mRNA expression of surfactant protein (SP)-A, -B and -C in the lung of LBW lambs but no difference in the protein expression of SP-A or -B. LBW also resulted in increased lysosome-associated membrane glycoprotein (LAMP)-3 mRNA expression, which may indicate an increase in either the density of type II Alveolar epithelial cells (AEC) or maturity of type II AECs. Although there was an increase in glucocorticoid receptor (GR) and 11β-hydroxysteroid dehydrogenase (11βHSD)-1 mRNA expression in the lung of LBW lambs, we found no change in the protein expression of these factors, suggesting that the increase in SP mRNA expression is not mediated by increased GC signalling in the lung. The increase in SP mRNA expression may, in part, be mediated by persistent alterations in hypoxia signalling as there was an increase in lung HIF-2α mRNA expression in the LBW lamb. The changes in the hypoxia signalling pathway that persist within the lung after birth may be involved in maintaining SP production in the LBW lamb.http://europepmc.org/articles/PMC5614422?pdf=render |
| spellingShingle | Jia Yin Soo Sandra Orgeig Erin Victoria McGillick Song Zhang I Caroline McMillen Janna L Morrison Normalisation of surfactant protein -A and -B expression in the lungs of low birth weight lambs by 21 days old. PLoS ONE |
| title | Normalisation of surfactant protein -A and -B expression in the lungs of low birth weight lambs by 21 days old. |
| title_full | Normalisation of surfactant protein -A and -B expression in the lungs of low birth weight lambs by 21 days old. |
| title_fullStr | Normalisation of surfactant protein -A and -B expression in the lungs of low birth weight lambs by 21 days old. |
| title_full_unstemmed | Normalisation of surfactant protein -A and -B expression in the lungs of low birth weight lambs by 21 days old. |
| title_short | Normalisation of surfactant protein -A and -B expression in the lungs of low birth weight lambs by 21 days old. |
| title_sort | normalisation of surfactant protein a and b expression in the lungs of low birth weight lambs by 21 days old |
| url | http://europepmc.org/articles/PMC5614422?pdf=render |
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