Passive permeability of ovine amnion and allantois to chloride — gestational changes

Wintour, E. Marelyn, Lingwood, Barbara E. and Towstoless, Michelle K. (1988) Passive permeability of ovine amnion and allantois to chloride — gestational changes. Placenta, 9 6: 599-606.


Author Wintour, E. Marelyn
Lingwood, Barbara E.
Towstoless, Michelle K.
Title Passive permeability of ovine amnion and allantois to chloride — gestational changes
Journal name Placenta   Check publisher's open access policy
ISSN 0143-4004
1532-3102
Publication date 1988-11
Sub-type Article (original research)
Volume 9
Issue 6
Start page 599
End page 606
Total pages 8
Place of publication Oxford, United Kingdom
Publisher Elsevier
Language eng
Formatted abstract
The passivepermeability to 36Cl of isolated pieces of amnion (112), amniochorion (4I) and allantois (54) from 55 pregnant ewes was studied in vitro. There was a significant decrease in the permeability coefficient (K) with increasing age in both amnion and allantois when samples from two age groups (72 to 109; 110 to 147 days of gestation) were analysed. There was a highly significant correlation (P < 0.00I) between amnionpermeability and amniotic fluid [Cl], but none between allantoic permeability and allantoic fluid [Cl ]. Amniotic fluid osmolality decreased significantly over the last third of gestation and was significantly correlated with amniotic fluid [Cl]. Allantoic fluid osmolality increased with age and did not correlate with allantoic fluid [Cl]. The anion exchange blocker, SITS, significantly decreased K in the amnion in the younger age group, suggesting that anion exchange through cell membranes may be one route of CImovement through the young amnion. The results suggest that the permeability of the amnion may play a role in the regulation of the composition of amniotic but not allantoic fluid in sheep.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: UQ Centre for Clinical Research Publications
 
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Created: Tue, 07 Dec 2010, 09:34:20 EST