Micelles of pulmonary surfactant in human amniotic fluid at term

Material type: 文書・図像類

Author: NISHIJIMA, Kojiほか

Publisher: Lippincott Williams & Wilkins

Publication date: 2006-08

Material Format: Digital

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Note (General)：: Studies using in vitro analysis have shown that the interaction between pulmonary surfactant and vemix caseosa could explain the appearance of amnioti...

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Material Type: 文書・図像類
Title: Micelles of pulmonary surfactant in human amniotic fluid at term
Author/Editor: NISHIJIMA, Koji
SHUKUNAMI, Ken-Ichi
TSUKAHARA, Hirokazu
ORISAKA, Makoto
MIURA, Junichiro
KOTSUJI, Fumikazu
Author Heading: NISHIJIMA, Koji
SHUKUNAMI, Ken-Ichi
TSUKAHARA, Hirokazu
ORISAKA, Makoto
MIURA, Junichiro
KOTSUJI, Fumikazu
Publication, Distribution, etc.: Lippincott Williams & Wilkins
Publication Date: 2006-08
Publication Date (W3CDTF): 2006-08
Periodical title: Pediatric research
No. or year of volume/issue: 60 2
Volume: 60
Issue: 2
Pages: 196-199
Text Language Code: eng
Subject Heading: Micelle
pulmonary surfactant
vemix caseosa
amniotic fluid
Target Audience: 一般
Note (General): Studies using in vitro analysis have shown that the interaction between pulmonary surfactant and vemix caseosa could explain the appearance of amniotic fluid turbidity. That phenomenon is interpreted based on the "roll-up" hypothesis. We tested the roll-up hypothesis by examining the presence of micelles of pulmonary surfactant in human amniotic fluid at term. Amniotic fluid samples were collected from each of six healthy pregnant women at term and at 16 wk of gestation. These samples were stained negatively and analyzed using an electron microscope. Ultrastructures present in amniotic fluid were compared with the structure of micelles derived from suspended surfactant TA isolated from bovine lung. Surfactant TA formed spheroidal and rod-shaped micelles 10-70 nm in diameter above the critical micelle concentration. Identical micelle particles were described in human amniotic fluid at term. In addition, surfactant protein B was identified in the micelle fraction of amniotic fluid. However, no micelles were found in human amniotic fluid taken at 16 wk of gestation. Our results support the view that pulmonary surfactant could induce the detachment of vernix caseosa and increase the turbidity of the amniotic fluid.
Access Restrictions: 限定公開
Related Material (DOI): 10.1203/01.pdr.0000228329.90502.3a
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ