Dietary supplementation of arachidonic acid increases arachidonic acid and lipoxin A4 contents in colon, but does not affect severity or prostaglandin E2 content in murine colitis model

Table 1 Fatty acid composition of the diets

Fatty acids	CON	ARA(L)	ARA(M)	ARA(H)	DHA
	g/100 g fatty acids
16:0 palmitic acid	27.6	28.1	28.2	28.3	28.3
18:0 stearic acid	4.2	4.3	4.6	4.9	4.4
18:1(n-9) oleic acid	32.1	31.5	31.0	29.6	30.9
18:2(n-6) linoleic acid	23.5	21.1	19.3	15.6	21.4
18:3(n-3) α-linolenic acid	11.3	11.4	11.2	11.3	2.3
20:3(n-6) dihomo-γ-linolenic acid	0.0	0.1	0.3	0.5	0.0
20:4(n-6) arachidonic acid	0.0	1.5	3.0	6.1	0.5
20:5(n-3) eicosapentaenoic acid	0.0	0.0	0.0	0.0	1.6
22:6(n-3) docosahexaenoic acid	0.0	0.0	0.0	0.0	6.3
Others	1.3	2.0	2.4	3.7	4.3
Total	100	100	100	100	100
PUFA	35.1	34.6	34.5	34.6	33.4
MUFA	32.9	32.5	31.8	30.4	33.6
SFA	32.0	33.0	33.8	35.0	33.0
n-6/n-3	2.1	2.0	2.1	2.0	2.2

Fatty acid composition of the experimental diets. Numbers in the table are expressed in percent except for the n-6/n-3 ratio. PUFA: polyunsaturated fatty acid; MUFA: monounsaturated fatty acid; SFA: saturated fatty acid. Note that each diet comprised equal amounts of each fatty acid and had the same n-6/n-3 ratio.

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