Table 7 Monitoring sheet for animals with tumors causing neurological signs

From: OBSERVE: guidelines for the refinement of rodent cancer models

Parameter

Outcome

Actions to be taken

Neurological signs: visual assessment of animals in cage

Circling and head tilt (note that these may worsen or only become apparent when animals are manipulated)

Present but still able to move around the cage and reach food and water

Increase general monitoring frequency to 1 time per day. Adding easy to reach food may prevent weight loss

Circling and/or head tilt preventing animals to eat and/or drink

Humane killing

Paresis/paralysis and ataxia

Present but still able to move around the cage and reach food and water

Increase general monitoring frequency to 1 time per day. Adding easy to reach food may prevent weight loss

Severe paresis/paralysis/ataxia preventing animals to eat and/or drink

Humane killing

Seizures

Present

Humane killing

Neurological signs: neurological tests

Grip, clasping and kyphosis test (Table 2)

Positive test

Increase general monitoring frequency to 1 time per day. Adding easy to reach food may prevent weight loss

Severe paresis/paralysis/ataxia preventing animals to eat and/or drink

Humane killing

  1. Assess 3 times per week; increase if necessary (see actions to be taken).