When glands secrete hormones, they come to the blood system and circulate to the target place via the circulatory system. These biochemicals can be proteins, steroids, amino acid derivatives, fatty acid derivatives, etc. Major glands that synthesize hormones are pituitary, thymus, pineal, thyroid, adrenal, pancreas, etc. Hormones are a kind of regulatory biochemicals produced by glands of our body. Presently, cytokines are used as biological response modifiers to treat various disorders. Out body produces several types of cytokines such as colony stimulating factors, growth and differentiation factors, immunoregulatory and pro-inflammatory cytokines, etc. However, cytokines play a major role in the immune systemвЂ™s defence against disease-causing organisms. Hence they can be considered as signalling molecules as well. They mainly act as mediators and regulators of immune processes. Moreover, cytokines bind to receptors and carry out immune responses and other functions such as cell growth, cell differentiation, etc. and non-immune cells such as endothelial cells, fibroblasts, stromal cells, etc. Immune cells such as B lymphocytes, T lymphocytes, mast cells, etc. The size of these molecules is approximate 50kDa. Side by Side Comparison вЂ“ Cytokines vs Hormones in Tabular FormД¬ytokines are a group of small proteins that involve cell communication, especially in innate and adaptive immune systems. Similarities Between Cytokines and HormonesДҐ. Immune cells and non-immune cells produce cytokines.

In contrast, cytokines are not synthesized by glands. Further, the endocrine glands synthesize and secrete hormones. Therefore, they mediate their actions by binding with a receptor and activating cellular responses. Hence, they mainly involve in the intracellular communication.

The key difference between cytokines and hormones is that the cytokines are small proteins while hormones can be proteins, steroids, amino acid derivatives, fatty acid derivatives, etc.Д¬ytokines and hormones are chemicals found in our body, which act as chemical messengers.