Table 1.

Intestinal dysbiosis in psoriasis.

Study	Subjects	Sample	Gut Microbiota Analysis Technique	Gut microbiota alterations
Hidalgo-Cantabrana et al. (2019)	19 psoriasis patients; 20 healthy individuals	Fecal samples	16S rRNA	Phylum: Actinobacteria, Firmicutes, Bacteroidetes, Proteobacteria Genus: Blautia, Bifidobacterium, Collinsella, Ruminococcus, Subdoligranulum, Slackia; Bacteroides, Parabacteroides, Barnesiella, Alistipes, Paraprevotella, Faecalibacterium
Zhang et al. (2021)	30 psoriasis patients; 30 healthy controls	Fecal samples	16S rRNA	Family: Veillonellaceae, Ruminococcaceae; Lachnospiraceae Genus: Faecalibacterium, Megamonas
Scher et al. (2015)	15 patients with psoriasis of the skin;17 healthy subjects	Fecal samples	16S rRNA	Genus: Parabacteroides, Coprobacillus
Huang et al. (2019)	35 psoriasis patients;27 healthy controls	Fecal samples	16S rRNA	Phylum: Bacteroidetes; Firmicutes Genus: Bacillus, Bacteroides, Sutterella, Lactococcus, Lachnospiraceae_UCG004, Lachnospira, Mitochondria_norank, Cyanobacteria_norank, Parabacteroides; Thermus, Streptococcus, Rothia, Granulicatella, Gordonibacter, Allobaculum, and Carnobacterium
Tan et al. (2018)	14 patients with vulgaris psoriasis; 14 healthy controls	Fecal samples	16S rRNA	Phylum: Verrucomicrobia, Tenericutes Genus: Enterococcus, Bacteroides; Akkermansia
Xiao et al. (2021)	30 psoriatic patients;15 healthy subjects	Fecal samples	Metagenomic sequencing	Phylum: Actinobacteria, Firmicutes, Verrucomicrobia; Bacteroidetes, Proteobacteria Genus: Faecalibacterium, Bacteroides, Bifidobacterium, Megamonas,Roseburia; Prevotella, Alistipes, Eubacterium
Eppinga et al. (2016)	29 psoriasis patients; 33 healthy individuals	Fecal samples	quantitative polymerase chain reaction	Species: Escherichia coli; Faecalibacterium prausnitzii
Codoñer et al. (2018)	52 plaque psoriasis;300 healthy individuals extracted from the human microbiome project (http://hmpdacc.org/)	Fecal samples	16S rRNA	Genus: Faecalibacterium, Akkermansia spp.; Bacteroides
Shapiro et al. (2019)	24 psoriasis patients; 22 healthy individuals	Fecal samples	16S rRNA	Phylum: Firmicutes, Actinobacteria Species: Ruminoccocus gnavus, Dorea formicigenerans, Collinsella aerofaciens; Prevotella copri, Parabacteroides distasonis
Dei-Cas et al. (2020)	55 psoriasis patients; 27 healthy individuals	Fecal samples	16S rRNA	Phylum: Firmicutes; Bacteroidetes Genus: Faecalibacterium, Blautia; Bacteroides, Paraprevotella

Red font – increased level; blue font – decreased level.