Department of Biology, University of North Dakota, Grand Forks, ND 58202, USA.
Comp Biochem Physiol A Mol Integr Physiol. 2014 Jan;167:59-67. doi: 10.1016/j.cbpa.2013.10.017. Epub 2013 Oct 16.
Adrenergic control of cardiovascular function is a common component of regulation in embryonic birds studied to date. Our goal was to investigate adrenergic and cholinergic cardiovascular regulation in two goose species, the Canada goose (Branta canadensis) and the related domestic goose (Anser anser domesticus) to determine if these species possess similar regulation during embryonic development. We determined mean arterial pressure (Pm) and heart rate (fH) responses to serial blockade of cholinergic, β-adrenergic and α-adrenergic receptors in B. canadensis and A. domesticus at 70 and 90% of total incubation (28days). Both species possessed cholinergic and β-adrenergic tone on fH at 70% of incubation that increased in intensity with development. In addition, a constant α-adrenergic tone on Pm was present in both species. Our findings indicate that these geese species possess both cholinergic and adrenergic cardiovascular regulation providing information needed for speculation regarding the commonalities in the ontogeny of these cardiovascular regulatory elements in birds.
到目前为止，研究人员对胚胎鸟类进行了研究，发现肾上腺素能对心血管功能的控制是其调节的常见组成部分。我们的目标是研究两种鹅的肾上腺素能和胆碱能心血管调节，即加拿大鹅（Branta canadensis）和相关的家鹅（Anser anser domesticus），以确定这些物种在胚胎发育过程中是否具有相似的调节。我们在 70%和 90%的总孵化期（28 天），分别确定了 B. canadensis 和 A. domesticus 对连续阻断胆碱能、β-肾上腺素能和α-肾上腺素能受体时的平均动脉压（Pm）和心率（fH）反应。这两个物种在孵化的 70%时都具有 fH 的胆碱能和β-肾上腺素能张力，随着发育强度增加。此外，两种物种的 Pm 上都存在恒定的α-肾上腺素能张力。我们的研究结果表明，这些鹅类具有胆碱能和肾上腺素能心血管调节，为推测鸟类这些心血管调节成分的个体发生的共同性提供了所需的信息。
