Nickel in Soil Modifies Sensitivity to Diazinon Measured by the Activity of Acetylcholinesterase, Catalase, and Glutathione S-Transferase in Earthworm Eisenia fetida

Table 2

Acetylcholinesterase (AChE) activity (nmol hydrolysed acetylthiocholine iodide*min⁻¹*mg⁻¹ protein), S-glutathione transferase (GST) activity (μmol CDNB*min⁻¹*mg⁻¹ protein), and catalase (CAT) activity (mmol decomposed H₂O₂*min⁻¹*mg⁻¹ protein) in the intestinal tract and body wall of Eisenia fetida exposed to nickel (Ni groups), pesticide (P group), and nickel and pesticide administered jointly (NiP group).

	AChE		GST		CAT
Group	Gastrointestinal tract	Body wall	Gastrointestinal tract	Body wall	Gastrointestinal tract	Body wall
	Mean ± SD (𝑛)	Mean ± SD (𝑛)	Mean ± SD (𝑛)	Mean ± SD (𝑛)	Mean ± SD (𝑛)	Mean ± SD (𝑛)
K	149,44 ± 12,59^bc (6)	130,09 ± 11,21^abc (7)	0,025 ± 0,004^a (7)	0,022 ± 0,003^a (8)	0,085 ± 0,019^bc (7)	0,019 ± 0,002^a* (7)
P	70,61 ± 9,59^a (6)	80,59 ± 8,59^a (6)	0,042 ± 0,005^a (9)	0,031 ± 0,005^abc* (6)	0,074 ± 0,020^ab (8)	0,048 ± 0,011^c* (8)
Ni300	162,35 ± 22,99^bc (7)	152,44 ± 24,17^bc (5)	0,059 ± 0,006^ab (6)	0,024 ± 0,004^ab* (6)	0,039 ± 0,008^a (6)	0,024 ± 0,003^ab* (5)
Ni300P	133,04 ± 19,51^abc (7)	111,24 ± 14,33^ab (5)	0,084 ± 0,007^b (5)	0,035 ± 0,006^c* (5)	0,083 ± 0,011^bc (6)	0,040 ± 0,008^c* (7)
Ni900	179,82 ± 29,19^c (6)	183,26 ± 30,76^c (7)	0,078 ± 0,010^b (7)	0,032 ± 0,005^bc* (4)	0,076 ± 0,023^ab (7)	0,031 ± 0,005^abc* (6)
Ni900P	124,07 ± 9,83^ab (5)	151,87 ± 18,50^bc* (5)	0,087 ± 0,019^b (6)	0,048 ± 0,011^c* (5)	0,131 ± 0,028^c (6)	0,037 ± 0,007^bc* (5)

Abbreviations are explained in Section 2. The same superscript letters show the homogeneity of compared groups (in columns), according to the ANOVA statistics. Asterisk *indicates the statistically significant difference between intestinal tract and body wall.