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Table 1 Summary of systematic behavioral tests for Sept4 Tg/+ mice in comparison with Sept4 −/− mice

From: Chronic overload of SEPT4, a parkin substrate that aggregates in Parkinson’s disease, causes behavioral alterations but not neurodegeneration in mice

Tests

Mental/physical activities

Indices measured

Alteration from wildtype

  

(inexhaustive)

Sept4tg/+(tg)

Sept4−/−(ko)

Table 1. Summary of systematic behavioral tests for Sept4Tg/+ (tg) mice in comparison with Sept4−/− (ko) mice (Additional Figure A1)

General health

Body weight

Rectal temperature

Grip strength

Hanging persistence

Light/dark transition test

Exploratory activity

Distance traveled in the light chamber

(Additional Figure A2)

Light avoidance

Distance traveled in the dark chamber

Latency to the first entry to the light chamber

Time stayed in the light chamber

Number of transitions between chambers

Open field test

Exploratory activity

Distance traveled

→*

(Figure 3)

Avoidance from open space

Center time

Open field test + metamphetamine

Induced surge of exploratory activity

Distance traveled

→*

(Figure 4)

 

Center time

N.D.

Elevated plus maze test

Exploratory activity

Distance traveled

(Additional Figure A3)

Height avoidance

Entries into open arms

Number of entries

Time stayed on open arms

Acoustic startle response

Startle reflex to loudness

Ampliture of body motion

(Additional Figure A4A)

    

Prepulse inhibition (PPI) test

Sensorimotor gating

Decrement of startle amplitude

(Additional Figure A4B)

    

Porsolt forced swim test

Despair-like behavior

Latency to immobility

(Additional Figure A5)

    

Home cage monitoring

Diurnal cycle of locomotor activity

Activity level (distance traveled)

→ (basal)

(Figure 5)

  

↓(at surges)

Social interaction test

Social behavior, anxiety-like behavior

Distance traveled

(1 chamber, stranger pair)

Number of contacts

(Additional Figure A7)

Total duration of active contacts

Mean contact duration

Total duration of contacts

Social interaction test

Social behavior, anxiety-like behavior

Time spent with novel stranger

↓(Step 2)

N.D.

(3 chamber, 1–2 caged strangers)

    

(Figure 6)

 

Distance traveled

↓(Step 2)

N.D.

Rota rod test

Motor coordination/learning

Latency to fall

(Additional Figure A6)

    

Beam test

Motor coordination/learning

Moving speed

N.D.

Gait analysis

Mechanics of limb movement

Limb positions and timings

→ (front paw angle)

N.D.

(Additional Figure A8)

  

↓ (hind paw angle)

N.D.

Hot plate test

Aversive response to noxious stimulus

Latency to limb withdrawal

(Additional 1 Figure A9)

    

Tail suspension test

Behavioral despair

Latency to immobility

(Additional 1 Figure A10)

    

Fear conditioning test

Fear memory

Conditioning

(Additional 1 Figure A11)

Contextual testing

  

Cued test with altered context

  1. Comparative table of systematic behavioral test results with Sept4Tg/+ (tg) and wild-type littermate male mice (C57BL/6, this study) and with Sept4−/− (ko) and wild-type littermate male mice (C57BL/6J, [12]). Symbols: →, no significant difference (p > 0.05); ↑, statistically significant increase; ↓, statistically significant decrease; in comparison with wildtype littermates. N.D., not determined.