“…Several studies have shown the efficacy of various LABs in preventing intestinal mucositis by regulating the microbiota in dysbiosis ( Chang et al, 2018 ), improving the inflammatory process, modulating oxidative stress ( Justino et al, 2015 ; Hu et al, 2020 ; Quaresma et al, 2020 ), and protecting the epithelial barrier by maintaining the integrity of tight junction proteins and goblet cells ( Yeung et al, 2015 ; Barroso et al, 2021 ). Despite these beneficial effects, the use of these inactivated microorganisms has also been highlighted ( Jin et al, 2020 ; Nakai et al, 2021 ; Trindade et al, 2021 ), to minimize possible risks of bacteria translocation producing systemic infections, especially in premature infants or immune-compromised patients ( Doron and Snydman, 2015 ; Zawistowska-Rojek and Tyski, 2018 ). In addition, it has been demonstrated that many of the effects (such as immunomodulation and microbiota regulation) of inactivated probiotics are similar to their metabolically active form, suggesting that these effects can be attributed to cell wall proteins of these microorganisms that interact with host cells during their passage through the gastrointestinal tract (GIT) ( Hsieh et al, 2016 ; Aiba et al, 2017 ; Jin et al, 2020 ; Nobre et al, 2022 ).…”