Table 2.

Effect of manganese (Mn) and manganese nanoparticles (Mn-NPs) on catalase (CAT) and superoxide dismutase (SOD) in Pangasianodon hypophthalmus for a period of 96 h.

Manganese exposure (mg/L)	Catalase (CAT)				Superoxide dismutase (SOD)
	Liver	Gill	Brain	Kidney	Liver	Gill	Brain	Kidney
Control (Mn-0, Mn-NPs-0)	10.73a ± 1.40	7.20a ± 1.41	10.14a ± 2.39	11.86a ± 1.41	49.26a ± 1.61	35.35a ± 1.05	48.48a ± 1.62	40.30a ± 0.83
Mn-110	22.38c ± 1.03	16.51b ± 1.89	16.96c ± 2.09	17.17b ± 2.13	65.42d ± 2.44	40.19b ± 3.0	71.49e ± 0.69	41.87a ± 1.48
Mn-111	21.42c ± 1.16	20.99c ± 1.23	19.49d ± 1.08	17.98b ± 1.68	69.26e ± 1.96	39.46b ± 0.95	72.01e ± 1.29	43.34ab ± 2.15
Mn-112	27.19d ± 2.64	26.64d ± 1.97	26.04f ± 1.34	22.01c ± 2.42	67.97de ± 2.76	40.15b ± 0.95	69.97e ± 0.81	50.34c ± 1.56
Mn-113	27.57d ± 2.44	29.88de ± 1.25	28.05g ± 1.42	26.21d ± 1.53	67.71de ± 3.55	40.56b ± 1.19	69.21e ± 1.93	46.33b ± 4.04
Mn-114	37.56f ± 2.45	32.77e ± 1.40	26.87f ± 1.71	28.63e ± 2.44	71.38e ± 1.93	42.74b ± 1.04	66.5d ± 1.59	45.36b ± 1.60
Mn-NPs-91	15.38b ± 2.56	15.95b ± 1.71	13.26b ± 2.4	17.29b ± 1.66	70.20de ± 3.64	42.23b ± 2.05	71.49e ± 3.10	44.33ab ± 2.73
Mn-NPs-92	16.88b ± 2.10	21.30c ± 3.08	19.22d ± 2.48	20.09c ± 1.58	56.38b ± 2.09	33.58ab ± 1.26	62.86c ± 1.06	42.03ab ± 1.57
Mn-NPs-93	32.62e ± 2.0	22.25c ± 2.37	23.08e ± 2.50	21.80c ± 2.18	58.37b ± 1.70	35.98ab ± 2.06	57.51b ± 1.27	43.11ab ± 0.65
Mn-NPs-94	37.60f ± 2.6	28.19de ± 2.12	26.98f ± 2.48	23.36 cd ± 2.94	59.24c ± 1.22	36.68ab ± 1.46	58.65b ± 1.42	42.95ab ± 1.05
Mn-NPs-95	35.41ef ± 2.14	29.34de ± 3.03	28.06g ± 1.94	25.36d ± 2.52	58.90c ± 1.40	37.23ab ± 1.74	57.96b ± 1.92	39.81a ± 1.55
p-value	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01

Values in the same column with different superscript (a, b, c, d, e, f, g) differ significantly (p < 0.01). Data expressed as Mean ± SE (n = 6). Catalase and SOD: Units/mg protein.