Dose-response relationship between plasma epinephrine concentration and alveolar liquid clearance in dogs.

Dose-response relationship between plasma epinephrine concentration and alveolar liquid clearance in dogs.
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犬血浆肾上腺素浓度与肺泡液体清除率之间的剂量-反应关系。

DOI:
10.1152/jappl.1998.85.5.1702
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发表时间:
1998
期刊:
Journal of applied physiology (Bethesda, Md. : 1985)
影响因子:
--
通讯作者:
Maron,MB
Maron,MB
中科院分区:
--
文献类型:
--
作者:
Maron,MB

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先前,在犬神经源性肺水肿(NPE)模型中观察到肾上腺素(S。M.莱恩,K. C. Maender,N. E. Awender和M. B。Maron.Am. J.呼吸。158:760-768,1998)。在本研究中,通过输注肾上腺素以产生256 ± 37、1,387 ± 51、15,737 ± 2,161和363,997 ± 66,984(SE)pg/ml(每个浓度n= 6)的血浆浓度4 h,并测量所得ALC,确定了麻醉犬血浆肾上腺素浓度与ALC之间的剂量-反应关系。后者通过将自体血浆滴入下肺叶后的质量平衡来确定。这些血浆浓度产生的ALC分别为滴注体积的14.3 ± 1.2、20.5 ± 1.9、30.1 ± 1.5和37.9 ± 2.7%。最低输注速率后的ALC与之前在基线条件下观察到的ALC(14.1 ± 2.1%)无差异,而在之前的NPE研究中,血浆肾上腺素浓度升高至7,683 ± 687 pg/ml,ALC为30.4 ± 1.6%。这些数据表明,在犬NPE恢复期间,ALC未受到最大程度的刺激,并表明可能进一步增加这种形式水肿的消退率。
Previously, alveolar liquid clearance (ALC) was observed to increase in a canine model of neurogenic pulmonary edema (NPE) by adrenal epinephrine (S. M. Lane, K. C. Maender, N. E. Awender, and M. B. Maron.Am. J. Respir. Crit. Care Med. 158: 760–768, 1998). In this study the dose-response relationship between plasma epinephrine concentration and ALC was determined in anesthetized dogs by infusing epinephrine to produce plasma concentrations of 256 ± 37, 1,387 ± 51, 15,737 ± 2,161, and 363,997 ± 66,984 (SE) pg/ml (n= 6 for each concentration) for 4 h and measuring the resultant ALC. The latter was determined by mass balance after instillation of autologous plasma into a lower lung lobe. These plasma concentrations produced ALCs of 14.3 ± 1.2, 20.5 ± 1.9, 30.1 ± 1.5, and 37.9 ± 2.7% of the instilled volume, respectively. ALC after the lowest infusion rate was not different from that previously observed under baseline conditions (14.1 ± 2.1%), whereas in a previous study of NPE, plasma epinephrine concentration increased to 7,683 ± 687 pg/ml and ALC was 30.4 ± 1.6%. These data indicate that, during recovery from canine NPE, ALC is not maximally stimulated and suggest that it might be possible to pharmacologically produce further increases in the rate of resolution of this form of edema.
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