Stimulation of distal airspace fluid clearance in guinea pigs involves bumetanide-sensitive ion transport
(2004) In American Journal of Obstetrics and Gynecology 191(1). p.340-345- Abstract
- Objective: This study was undertaken to test the hypothesis that beta-adrenoceptor stimulation of fetal lung fluid absorption in near-term guinea pig fetuses involves bumetanide-sensitive ion transport. Study design: Fetuses were obtained from timed-pregnant guinea pigs at 61 to 69 days' gestation with and without oxytocin-induced preterm labor. The fetuses were placed on continuous positive airway pressure oxygenation, and an isosmolar 5% albumin solution was instilled into the lungs. Distal airspace fluid clearance was measured over 1 hour from the increase in distal airspace protein concentration as fluid was reabsorbed with and without the Cl- transport inhibitor bumetanide. Results: Fetal lungs began to absorb distal airspace fluid at... (More)
- Objective: This study was undertaken to test the hypothesis that beta-adrenoceptor stimulation of fetal lung fluid absorption in near-term guinea pig fetuses involves bumetanide-sensitive ion transport. Study design: Fetuses were obtained from timed-pregnant guinea pigs at 61 to 69 days' gestation with and without oxytocin-induced preterm labor. The fetuses were placed on continuous positive airway pressure oxygenation, and an isosmolar 5% albumin solution was instilled into the lungs. Distal airspace fluid clearance was measured over 1 hour from the increase in distal airspace protein concentration as fluid was reabsorbed with and without the Cl- transport inhibitor bumetanide. Results: Fetal lungs began to absorb distal airspace fluid at 64 to 66 days' gestation, and at birth, distal airspace fluid clearance rapidly quadrupled. Labor induction by oxytocin stimulated distal airspace fluid clearance. Distal airspace fluid clearance, when present, was sensitive to propranolol-inhibition and depended on beta-adrenoceptor stimulation. Fluid secretion at 61 days' gestation was reduced by bumetanide instillation. Bumetanide addition was only inhibitory when distal airspace fluid clearance was propranolol-sensitive. Conclusion: beta-adrenoceptor stimulation from endogenous fetal epinephrine increased fetal distal airspace fluid clearance and involved bumetanide-sensitive ion transport. (C) 2004 Elsevier Inc. All rights reserved. (Less)
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- author
- Ye, X ; Norlin, A and Folkesson, Hans LU
- organization
- publishing date
- 2004
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Cl- transport, bumetanide, alveolar epithelium, beta-adrenoceptors, epinephrine perinatal development
- in
- American Journal of Obstetrics and Gynecology
- volume
- 191
- issue
- 1
- pages
- 340 - 345
- publisher
- Elsevier
- external identifiers
-
- pmid:15295389
- wos:000223139100055
- scopus:4043123374
- ISSN
- 1097-6868
- DOI
- 10.1016/j.ajog.2003.09.074
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Animal Physiology (Closed 2011) (011011000)
- id
- 9928d242-86b9-4a92-b5c1-8fb26911eb5c (old id 271036)
- date added to LUP
- 2016-04-01 11:33:14
- date last changed
- 2022-01-26 06:58:05
@article{9928d242-86b9-4a92-b5c1-8fb26911eb5c,
abstract = {{Objective: This study was undertaken to test the hypothesis that beta-adrenoceptor stimulation of fetal lung fluid absorption in near-term guinea pig fetuses involves bumetanide-sensitive ion transport. Study design: Fetuses were obtained from timed-pregnant guinea pigs at 61 to 69 days' gestation with and without oxytocin-induced preterm labor. The fetuses were placed on continuous positive airway pressure oxygenation, and an isosmolar 5% albumin solution was instilled into the lungs. Distal airspace fluid clearance was measured over 1 hour from the increase in distal airspace protein concentration as fluid was reabsorbed with and without the Cl- transport inhibitor bumetanide. Results: Fetal lungs began to absorb distal airspace fluid at 64 to 66 days' gestation, and at birth, distal airspace fluid clearance rapidly quadrupled. Labor induction by oxytocin stimulated distal airspace fluid clearance. Distal airspace fluid clearance, when present, was sensitive to propranolol-inhibition and depended on beta-adrenoceptor stimulation. Fluid secretion at 61 days' gestation was reduced by bumetanide instillation. Bumetanide addition was only inhibitory when distal airspace fluid clearance was propranolol-sensitive. Conclusion: beta-adrenoceptor stimulation from endogenous fetal epinephrine increased fetal distal airspace fluid clearance and involved bumetanide-sensitive ion transport. (C) 2004 Elsevier Inc. All rights reserved.}},
author = {{Ye, X and Norlin, A and Folkesson, Hans}},
issn = {{1097-6868}},
keywords = {{Cl- transport; bumetanide; alveolar epithelium; beta-adrenoceptors; epinephrine perinatal development}},
language = {{eng}},
number = {{1}},
pages = {{340--345}},
publisher = {{Elsevier}},
series = {{American Journal of Obstetrics and Gynecology}},
title = {{Stimulation of distal airspace fluid clearance in guinea pigs involves bumetanide-sensitive ion transport}},
url = {{http://dx.doi.org/10.1016/j.ajog.2003.09.074}},
doi = {{10.1016/j.ajog.2003.09.074}},
volume = {{191}},
year = {{2004}},
}