Biomarkers of Adverse Response to Mercury: Histopathology versus Thioredoxin Reductase Activity

Table 2

Quantification of total mercury (HgT) and selenium (Se) values (μg g⁻¹) in liver and kidney of zeabra-seabreams exposed to different treatments at days 28 and 42. Results were previously reported in Branco et al. [34]. MeHg: exposure to Methylmercury; HgII: exposure to Hg²⁺; MeHgSe: co-exposure to MeHg and Se; HgSe: co-exposure to Hg²⁺ and Se; MeHgRSe: exposure to MeHg followed by exposure to Se during depuration; HgRSe: exposure to Hg²⁺ followed by exposure to Se during depuration; Se: exposure to selenium; C: control group.

MeHg

HgII

MeHgSe

HgSe

MeHgRSe

HgRSe

Se

C

d28

d42

d28

d42

d28

d42

d28

d42

d42

d42

d28

d42

d28

d42

Liver

HgT (μg g^−1)

10.2±4.8

6.2±1.4

1.4±0.2

2.8±0.4

5.8±1.7

4.8±1.3

1.5±0.1

2.3±0.5

5.8±1.5

2.4±0.5

0.07±0.02

0.09±0.02

0.10±0.06

0.07±0.03

Se (μg g^−1)

0.6±0.1

0.9±0.2

0.5±0.2

1.3±0.2

0.9±0.02

1.3±0.3

1.1±0.3

1.6±0.3

1.3±0.2

1.0±0.1

1.3±0.2

1.3±0.2

1.0±0.14

1.0±0.21

Kidney

HgT (μg g^−1)

28.7±8.3

17.3±6.3

5.8±1.9

8.3±4.1

15.1±1.9

11.9±3.9

8.6±3.3

10.0±3.5

23.6±1.1

8.8±1.7

0.11±0.03

0.15±0.02

0.16±0.04

0.14±0.01

Se (μg g^−1)

1.6±0.6

3.3±0.6

0.4±0.3

1.3±0.2

2.7±1.2

2.1±1.1

1.0±0.3

2.8±0.8

2.3±0.6

4.5±1.2

1.7±0.3

1.7±0.5

1.3±0.6

1.0±0.2