The effect of autonomic nervous system tone on the content of cyclic and acyclic aminoacids in the serum of chickens

Abstract

Regulation of metabolic and physiological functions of the whole organismis a complex neurohumoral process. Its functioning is supported by many organs and systems. One of the main roles here is performed by the autonomic nervous system. The mutual influence of its departments – sympathetic and parasympathetic, provide stable homeostasis and balanced work of all organs and structures. The sympathetic department is responsible for energy resource mobilization and adaptation. Without its influence, a rapid response of the cardiovascular and endocrine systems to the body's needs arising from changes in the internal or external environment is impossible. Dominant sympathetic tone provides activation of gluconeogenes is and glycogenolysis, lipolysis, etc. In contrast, the parasympathetic division is responsible for energy conservation and nutrient accumulation. Its dominant activity causes a decrease in heart rate, increase in pupil diameter depending on light flux, secretion of saliva and digestive juices, acceleration of motility of the gastrointestinal tract. However, to date, the existence of the influence of the tone of the autonomic nervous system on the content of proteins and their derivatives in the serum has not been studied enough. Proteins and their main components – aminoacids are indispensable in the construction and functioning of the whole organism of all living beings. Deficiency or absence of at least one essential amino acid can lead to disruption of various functional systems of the body, adverse health effects, and in the case of long-term deficiency and death. Studies to determine the content of amino acids in the serum of chickens with different dominant tone of the autonomic nervous system revealed different contents of individual cyclic and acyclic amino acids. The content of phenylalanine in sympathicotonic chickens differed significantly compared with the bird, which had a balanced tone (P˂0.05). In contrast, the tyrosine content was almost the same in all groups of animals. The amino acids leucine/ isoleucine and alanine were not significantly predominant in the different samples, but tended to be higher in sympathetic and vagotonic chickens. The study suggests that the dominance of the sympathetic and parasympathetic divisions of the autonomic nervous system or their balanced tone on the content of amino acids in the serum of chickens. Key words: sympathicotonia, vagotonia, normotony, phenylalanine, alanine, leucine/isoleucine, tyrosine.