Changes in the colon microbiota and intestinal cytokine gene expression following minimal intestinal surgery

Table 2 Relative abundance of bacterial species at the family level in colonic content samples obtained from no-surgery control animals (n = 6) or animals who have undergone a transaction surgery (n = 5)

Phylum level	Family level	Control (Rel. Abundance)	Transection (Rel. Abundance)	P value
Proteobacteria	Enterobacteriaceae	22.95 + 5.27	2.07 + 0.72a	0.0104
	Desulfovibrionaceae	2.89 + 1.26	2.95 + 1.16	0.9716
	Moraxellaceae	0.69 + 0.55	8.81 + 8.72	0.4501
	Pseudoalteromonadaceae	0.55 + 0.43	1.42 + 1.42	0.5844
	Vibrionaceae	0.52 + 0.37	6.03 + 5.91	0.4038
Bacteriodetes	Rikenallaceae	6.00 + 1.87	3.70 + 1.31	0.3416
	Porphyromonadaceae	2.33 + 0.76	4.50 + 1.78	0.3080
	Prevotellaceae	2.76 + 0.39	8.05 + 2.60	0.1105
	Bacteroidaceae	2.54 + 0.56	0.86 + 0.43a	0.0432
Firmicutes	Ruminococcaceae	19.97 + 2.01	15.26 + 4.71	0.3962
	Veillonellaceae	14.19 + 4.12	22.40 + 7.73	0.3834
	Lachnospiraceae	7.63 + 2.31	6.19 + 2.00	0.6475
	Peptostreptococcaceae	3.19 + 1.06	1.52 + 1.08	0.2991
	Erysipeolotrichales Incertae Sedis	1.78 + 0.61	1.03 + 0.53	0.3809
	Clostridiaceae	1.45 + 0.35	0.73 + 0.36	0.1843
	Lactobacillaceae	1.09 + 0.45	1.58 + 0.83	0.6197
	Streptococcaceae	0.13 + 0.06	1.56 + 1.54	0.4056
Actinobacteria	Micrococcinea	0.07 + 0.07	1.54 + 1.54	0.3926
Fusobacteria	Fusobacteriaceae	0.98 + 0.44	3.85 + 3.09	0.4079
Spirochaetes	Spirochaetaceae	1.83 + 1.15	0.09 + 0.08	0.1898
Other		6.49 + 1.09	5.84 + 1.41	0.7245

Data are expressed as mean + SEM (%).

^aP < 0.05 vs control. Bacterial species whose relative abundance was < 1% in both the control and transaction surgery group are compiled within the “other” category. Significant changes in bacteria whose relative abundance was < 1% are detailed within the text.