Document Detail


Interactions among pulmonary surfactant, vernix caseosa, and intestinal enterocytes: Intra-amniotic administration of fluorescently liposomes to pregnant rabbit.
MedLine Citation:
PMID:  22637154     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Although vernix caseosa is known to be a natural biofilm at birth, human pulmonary surfactant commences to remove the vernix from fetal skin into the amniotic fluid at gestational week 34, i.e. well before delivery. To explain this paradox, we first produced two types of fluorescently labelled liposomes displaying morphology similar to that of pulmonary surfactant and vernix caseosa complexes. We then continuously administered these liposomes into the amniotic fluid space of pregnant rabbits. In addition, we produced pulmonary surfactant and vernix caseosa complexes and administered them into the amniotic fluid space of pregnant rabbits. The intra-amniotic infused fluorescently labelled liposomes were absorbed into the fetal intestinal epithelium. However, the liposomes were not transported to the livers of fetal rabbits. We also revealed that continuous administration of micelles derived from pulmonary surfactants and vernix caseosa protected the small intestine of the rabbit fetus from damage due to surgical intervention. Our results indicate that pulmonary surfactant and vernix caseosa complexes in swallowed amniotic fluid might locally influence fetal intestinal enterocytes. Although the present studies are primarily observational and further studies are needed, our findings elucidate the physiological interactions among pulmonary, dermal-epidermal, and gastrointestinal developmental processes.
Authors:
Koji Nishijima; Ken-Ichi Shukunami; Hideo Yoshinari; Jin Takahashi; Hideyuki Maeda; Hitoshi Takagi; Fumikazu Kotsuji
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-5-25
Journal Detail:
Title:  American journal of physiology. Lung cellular and molecular physiology     Volume:  -     ISSN:  1522-1504     ISO Abbreviation:  -     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-5-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100901229     Medline TA:  Am J Physiol Lung Cell Mol Physiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
1University of Fukui.
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