... reflect a state of increased adrenergic activity, and the delayed rise of Ach and cGMP may be due to an increased parasympathetic stimulation.The cyclic nucleotides (cAMP and cGMP) are important components of an internal signaling system which regulates the activity of most cells [2] and mediates the cell...

...Norbert Voelkel; Angelika Voelkel; Ulrich Wiegers; Eckhart Kaukel The objective of this study is to determine whether chronic hypercapnia, unlike chronic hypoxia, causes lung tissue histamine release and to seek further evidence for our hypothesis that the cyclic nucleotides cAMP and cGMP play...