“…While this concept of the fundamental roles that gap junctional intercellular communication plays in the normal physiological functions of all organs of the metazoans, including the human being, this concept is still not generally recognized as key factor in the fields of toxicology, cancer, neurosciences, nor in the emerging field of stem cell regenerative therapy, as it should. However, it is a fact that these gap junctions exist in all organs and the gap junctional intercellular communication process, which, homeostatically, regulates cell proliferation, differentiation and apoptosis can be modulated by all kinds of physical, chemical and biological agents, as well as by behaviors, such as smoking; excessive calories and cultural conditions (changing diets; lack of exercise) [38,39]. With the explosion of experiments linking alterations of the gut microbiome to various chronic diseases of the human [40,41], and with the known association of gut bacteria, Heliobacter pylori, and stem cells in the stomach [42,43], as well as various secreted inflammatory factors from various populations of the microbiome that could modulate gap junctions in the gut cells [44], one could reasonable speculated that these factors could stimulate normal or "initiated" adult gut stem cells to bring about chronic inflammatory bowel diseases or intestinal cancers.…”