Table 1 Heart weight and heart weight / body weight ratio of rats following 10 days of saline / methamphetamine injections or 10 days saline / methamphetamine injections followed by 30 days of subsequent abstinence. Data represent the mean ± SEM of 6 animals

Group 1: Male 10 days saline

6

1.5 ± 0.05

3.9 ± 0.2

46 ± 1

Group 2: Male 10 days methamphetamine

6

1.6 ± 0.06

4.1 ± 0.1

37 ± 2

Group 3: Female 10 days saline

6

0.95 ± 0.04^a

4.5 ± 0.1

19 ± 2^a

Group 4: Female 10 days methamphetamine

6

0.95 ± 0.02^b

4.5 ± 0.1

11 ± 2^b

Group 5: Male 10 days saline + 30 days abstinence

6

1.7 ± 0.06^a

3.8 ± 0.1

104 ± 6^a

Group 6: Male 10 days methamphetamine + 30 days abstinence

6

1.7 ± 0.06

3.6 ± 0.2

110 ± 8^g

Group 7: Female 10 days saline + 30 days abstinence

6

1.2 ± 0.03^c

4.0 ± 0.2^e

46 ± 2^c

Group 8: Female 10 days methamphetamine + 30 days abstinence

6

1.1 ± 0.02^d

3.8 ± 0.1^f

44 ± 7^d