Relationship Between Antimicrobial Peptides, Probiotics, Postbiotics, and Parabiotics in the Maintenance of a Well-Balanced Gut Ecosystem

Diverse microorganisms in the gut ecosystem play a crucial role in human health and extend beyond digestion. Recent studies have highlighted its critical role in preventing gastrointestinal issues, regulating the immune system, and addressing chronic diseases. Imbalances in the gut microbiome can pose a threat to overall well-being, leading to gastrointestinal problems and increased susceptibility to infections. Probiotics, which are living microorganisms, enhance gut microbiota, Probiotics, which are living microorganisms, enhance gut microbiota, whereas their metabolic byproducts support immune function and overall gut health. The biological characteristics and selection criteria for probiotics highlight their safety and efficacy. Postbiotics derived from fermentation or metabolic processes play a vital role in health promotion, including immunomodulation, anti-inflammatory effects, and antioxidant activities. Parabiotics, which are nonviable microbial compounds, offer benefits without the concerns of live microorganisms. Parabiotics, being nonviable, present advantages, such as enhanced safety and stability. AMPs have diverse antimicrobial and antifungal activities with potential applications in food processing, biomedical research, and antimicrobial resistance. AMPs synthesized within the gastrointestinal tract may regulate pathogenic bacteria and contribute to microbial equilibrium. Synergistic combinations of AMPs have demonstrated enhanced efficacy against various pathogens. This chapter explores the synergistic interplay between antimicrobial peptides (AMPs), probiotics, postbiotics, and parabiotics in maintaining a balanced gut environment. Future research directions include exploration of the specific metabolic profiles of these components and their therapeutic applications, thereby offering promising prospects for enhancing health and immunity. Embracing an integrated and comprehensive strategy with innovative formulations for gut health holds immense potential for addressing the dynamic nature of gut health and optimizing gastrointestinal well-being.