A Mathematical Model of the Pancreatic Ductal Epithelium
A Mathematical Model of the Pancreatic Ductal Epithelium
复制标题
胰管上皮的数学模型
DOI:
10.1007/s002329900132
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发表时间:
1996
期刊:
影响因子:
--
通讯作者:
B. Argent
中科院分区:
文献类型:
--
作者:
Y. Sohma;M. Gray;Y. Imai;B. Argent
Abstract. A mathematical model of the HCO−3-secreting pancreatic ductal epithelium was developed using network thermodynamics. With a minimal set of assumptions, the model accurately reproduced the experimentally measured membrane potentials, voltage divider ratio, transepithelial resistance and short-circuit current of nonstimulated ducts that were microperfused and bathed with a CO2/HCO−3-free, HEPES-buffered solution, and also the intracellular pH of duct cells bathed in a CO2/HCO−3-buffered solution. The model also accurately simulated: (i) the effect of step changes in basolateral K+ concentration, and the effect of K+ channel blockers on basolateral membrane potential; (ii) the intracellular acidification caused by a Na+-free extracellular solution and the effect of amiloride on this acidification; and (iii) the intracellular alkalinization caused by a Cl−-free extracellular solution and the effect of DIDS on this alkalinization. In addition, the model predicted that the luminal Cl− conductance plays a key role in controlling both the HCO−3 secretory rate and intracellular pH during HCO−3 secretion. We believe that the model will be helpful in the analysis of experimental data and improve our understanding of HCO−3-transporting mechanisms in pancreatic duct cells.
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DOI:
10.1152/ajpgi.1988.254.6.g925
发表时间:
1988
期刊:
The American journal of physiology
影响因子:
--
作者:
Stuenkel,EL;Machen,TE;Williams,JA
通讯作者:
Williams,JA
影响因子:
3.4
作者:
HARTMANN, T;VERKMAN, AS
通讯作者:
VERKMAN, AS
影响因子:
3.4
作者:
Verkman,AS;Alpern,RJ
通讯作者:
Alpern,RJ
影响因子:
--
作者:
WILLUMSEN, NJ;DAVIS, CW;BOUCHER, RC
通讯作者:
BOUCHER, RC
DOI:
10.1152/ajprenal.1990.258.1.f9
发表时间:
1990
期刊:
The American journal of physiology
影响因子:
--
作者:
Kohn,OF;Mitchell,PP;Steinmetz,PR
通讯作者:
Steinmetz,PR