What is the stress-related hormone that newborns need in their bloodstream to avoid, for example, breathing problems?

The catecholamines is the stress related hormone that newborns needs in their bloodstream to avoid breathing problems. A catecholamine is a monoamine which is an organic compound that has a catechol and a side chain amine and is consequent from the amino acid tyrosine which is consequent from the dietary sources as well as fusion from phenylalanine. The catecholamine is water soluble and are 50 percent certain to plasma proteins in transmission. 

Both of them have a nucleus, golgi apparatus, cell membrane, smooth and rough endoplasmic reticulum, lysosome, and ribosomes.