Comparison of the effect of ambroxol and dexamethasone on the expression of pulmonary surfactant proteins in the fetal rat lungs
OBJECTIVE: To investigate the effects of maternally administered dexamethasone and ambroxol on the mRNA levels of surfactant proteins (SP-A, SP-B and SP-C) expression in fetal rat lungs at gestational age day 19
| Veröffentlicht in: | Zhonghua er ke za zhi = Chinese journal of pediatrics. - 1960. - 42(2004), 6 vom: 22. Juni, Seite 450-3 |
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| Weitere Verfasser: | , , |
| Format: | Aufsatz |
| Sprache: | Chinese |
| Veröffentlicht: |
2004
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| Zugriff auf das übergeordnete Werk: | Zhonghua er ke za zhi = Chinese journal of pediatrics |
| Schlagworte: | Comparative Study English Abstract Journal Article Expectorants Glucocorticoids Pulmonary Surfactant-Associated Protein A Pulmonary Surfactant-Associated Protein B Pulmonary Surfactant-Associated Protein C Pulmonary Surfactant-Associated Proteins RNA, Messenger mehr... |
| Zusammenfassung: | OBJECTIVE: To investigate the effects of maternally administered dexamethasone and ambroxol on the mRNA levels of surfactant proteins (SP-A, SP-B and SP-C) expression in fetal rat lungs at gestational age day 19 METHODS: A 19-day fetal rat lung model was employed. In situ hybridization was used to detect the expression of SP-B mRNA in alveolar type II cell, and the levels of SP-A, SP-B and SP-C mRNAs were detected by semi-quantitative reverse transcriptase-polymerase chain reaction (RT-PCR) RESULTS: (1) SP-B mRNA was detected in situ in alveolar type II cells in fetal rat lung of day 19 gestational age; (2) In the late developmental period of fetal rat lungs, alveolar type II cells were also found around bronchus; (3) Comparing to beta-actin mRNA, the relative values of SP-A, SP-B and SP-C mRNAs were 0.81 +/- 0.26, 0.97 +/- 0.20 and 0.88 +/- 0.11 in fetal lung in the control group. The relative values of mRNAs of SP-A, SP-B and SP-C to beta-actin were 1.04 +/- 0.16, 1.28 +/- 0.29, 1.09 +/- 0.25 in fetal lungs of the ambroxol injected rats, and were 1.08 +/- 0.25, 1.23 +/- 0.35, 1.21 +/- 0.25 in fetal lungs of the dexamethasone injected rats, respectively. Both ambroxol and dexamethasone-treated rats had significantly higher mRNA expression of surfactant proteins compared to the control saline injected animals (P < 0.05). (4) There were no significant differences between ambroxol and dexamethasone in the effects of increasing expressions of surfactant protein mRNAs (P > 0.05) CONCLUSION: Antepartum administration of both ambroxol and dexamethasone can significantly increase fetal lung SP-A, SP-B and SP-C mRNAs expression |
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| Beschreibung: | Date Completed 09.09.2004 Date Revised 07.06.2016 published: Print Citation Status MEDLINE |
| ISSN: | 0578-1310 |