The unusual symmetric reopening effect induced by pulmonary surfactant.
The unusual symmetric reopening effect induced by pulmonary surfactant.
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肺表面活性物质诱导的不寻常的对称重新开放效应。
DOI:
10.1152/japplphysiol.00814.2013
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Gaver3rd,DonaldP
中科院分区:
文献类型:
--
作者:
Yamaguchi,Eiichiro;Giannetti,MatthewJ;VanHouten,MatthewJ;Forouzan,Omid;Shevkoplyas,SergeyS;Gaver3rd,DonaldP
This study investigates the stability of a finger of air as it propagates into a liquid-filled model of a liquid-filled model of a pulmonary bifurcation. We seek to elucidate the stability characteristics of the reopening of daughter airways, an event that may be important to the treatment of acute lung disease. To do so, we investigated the symmetry of reopening under conditions of nearly constant surface tension with1) purified H2O or2) an anionic surfactant (sodium dodecyl sulfate). Dynamic surface tension was investigated using pulmonary surfactant (Infasurf) with and without the presence of albumin. Flow visualization was accomplished using a microparticle image velocimetry (μ-PIV)/shadowgraph system through which we measured1) the propagation velocity of the finger of air that reopens each daughter branch, and2) the instantaneous and averaged velocity field of liquid phase surrounding the tip of the propagating bubble. Only pulmonary surfactant demonstrated the ability of maintaining a nearly symmetric propagation in the daughter channels, which is likely to lead to homogeneous airway reopening. In contrast, when pulmonary surfactant was inactivated by albumin or when the system was held at a nearly constant surface tension, reopening occurred asymmetrically. Our analysis suggests that Infasurf's dynamic surface tension qualities are important to stabilize the removal of liquid obstructions. This demonstrates a new important function of pulmonary surfactant for airway reopening of a multibranched network.
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影响因子:
9.9
作者:
Krueger;Gaver
通讯作者:
Gaver
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
E. Yamaguchi;Bradford J. Smith;D. Gaver
通讯作者:
D. Gaver
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
D. Yap;D. Gaver
通讯作者:
D. Gaver
影响因子:
3.7
作者:
Bradford J. Smith;Sarah R. Lukens;E. Yamaguchi;D. Gaver
通讯作者:
D. Gaver
DOI:
10.1002/ar.20643
发表时间:
2008-04-01
影响因子:
2
作者:
Lee, Dongyoub;Park, Seong S.;Wexler, Anthony S.
通讯作者:
Wexler, Anthony S.