Table 1.

Predominant beneficial bacteria in fecal microbiota transplantation and dominant microbiota in humans and mice.

Dominant Microbiota in Humans and Mice
Authors	Dominant microbiota	Host
Li et al. [43]	Lactobacillus reuteri, Enterococcus faecium, Escherichia coli, Bacteroides ovatus, Fusobacterium gastrosuis	Mice
Rinninella et al. [44]	Fecalibacterium prausnitzii, Clostridium spp., Lactobacillus reuteri, Enterococcus faecium, Bacteroides vulgatus, Bacteroides uniformis Prevotella spp., Parabacteroides distasonis	Human
Predominantly Beneficial Microbiota in Various Pathologies
Authors	Micro-organism	Pathology	Main Findings
Lima et al. [45]	Odoribacter splanchnicus	Ulcerative Colitis	Odoribacter splanchnicus plays a crucial role in enhancing both metabolic functions and immune cell resilience against colitis.
Yang et al. [46]	Lactobacillus acidophilus, coleohominis, gallinarum; Selenomonas artemidis	Constipation, depression, and anxiety	Psychiatric symptoms were improved after the FMT.
Aggarwala et al. [47]	Bacteroides vulgatus, uniformis ovatus, cellulosilyticus; Parabacteroides distasonis, merdae	Clostridioides difficile infection	Significantly predicted the clinical outcomes of the transplantation for up to five years.
Lee et al. [48]	Bacteroidales	Non specific intestinal disorders	The study effectively used genome-resolved metagenomics to track and identify bacterial strains that persist in FMT recipients, deepening insights into microbiota dynamics post-transplant.
Zhang et al. [49]	Faecalibacterium; Eubacterium; Roseburia	Inflammatory Bowel Disease	Symptoms were improved after FMT but outcomes are linked to gut microbiota and methodology variations, emphasizing the need for standardized research to improve FMT effectiveness through microbial and metabolite adjustments.