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Table 2 Effect of PM 2.5 exposure on cardiovascular responses in SH rats

From: PM2.5-induced cardiovascular dysregulation in rats is associated with elemental carbon and temperature-resolved carbon subfractions

Response

Study

dfN

dfD

p-value

Heart rate

1

35

421

*0.0246

 

2

35

455

0.365

 

3

35

493

*0.0008

 

4

35

504

0.661

lnSDNN

1

35

421

0.591

 

2

35

455

0.061

 

3

35

493

*0.0372

 

4

35

504

0.356

lnRMSSD

1

35

421

0.076

 

2

35

455

0.546

 

3

35

493

0.289

 

4

35

504

0.266

MAP

1

35

391

*0.0124

 

2

35

456

*0.0107

 

3

35

495

*0.0106

 

4

35

504

0.459

Systolic

1

35

391

*0.0239

 

2

35

456

*0.0127

 

3

35

495

*0.0193

 

4

35

504

0.476

Diastolic

1

35

391

*0.0085

 

2

35

456

*0.0097

 

3

35

495

*0.0059

 

4

35

504

0.415

  1. Data are expressed as p-values for the interaction of Exposure (Air vs. PM2.5) and time (1 h intervals). dfN-degrees freedom for subjects, dfD degrees freedom for observations. *p < 0.05.
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Particle and Fibre Toxicology

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