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Table 2 Overview of measured endpoints and obtained responses

From: Pesticides diazinon and diuron increase glutathione levels and affect multixenobiotic resistance activity and biomarker responses in zebrafish (Danio rerio) embryos and larvae

Endpoint

Exposure period

Response to diazinon

Response to diuron

Fluorescent GSH detection

1 h (96–97 hpf)

↑

↑

Fluorescent ROS detection

2 h (96–98 hpf)

–

–

multixenobiotic resistance activity (MXR)

24 h (2–26 hpf)

↓

–

Multixenobiotic resistance activity (MXR)

48 (2–50 hpf)

↓

↑

In vivo enzymatic responses

 EROD activity

1 h (96–97 hpf)

–

–

 CES activity

↓

–

 GST activity

–

–

 CAT activity

–

–

 AChE activity

↓

–

In vitro enzymatic activities

 CYP2D6 activity

1 h

–

–

 CYP2A6 activity

–

–

 CYP2C9 activity

–

–

 CYP1A2 activity

↓

↓

 CYP2B6 activity

↓

–

 CYP2C19 activity

↓

↓

 CYP3A4 activity

↓

–

 AChE activity

–

↓

Gene expression measurements

 cyp1a1

48 h (72–120 hpf)

–

–

 cyp3c4

↓

↑

 cyp3a65

↓

–

 gstp1

↑

–

  1. ↑ Indicates induction
  2. ↓ Indicates inhibition
  3. – Indicates no significant change