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Table 2 Antinociceptive effect of D. sissoo leave extract, morphine and reversal effect of naloxone in hot plate test

From: Antinociceptive effect of methanol extract of Dalbergia sissoo leaves in mice

Treatment

Dose (mg/kg)

Latency period (s) (% MPE) Pretreatment

30 min

60 min

90 min

120 min

Treatment without Naloxone

Control

0.1 mL/mouse

5.40 ± 1.20

7.20 ± 1.56

9.20 ± 0.86

9.60 ± 1.07

10.60 ± 1.07

Morphine

5

5.82 ± 0.86

12.60 ± 0.92* (42.19)

14.00 ± 0.70** (44.44)

15.20 ± 0.86** (53.84)

18.00 ± 1.14** (78.72)

MEDS

100

5.20 ± 0.97

8.60 ± 2.01 (10.93)

10.80 ± 0.86 (14.81)

13.00 ± 1.00 (32.69)

15.40 ± 1.28 (51.06)

MEDS

200

7.80 ± 1.46

9.40 ± 0.92 (17.18)

11.60 ± 1.20 (22.22)

14.00 ± 1.22* (42.30)

16.40 ± 1.53* (61.70)

MEDS

400

8.80 ± 1.24

11.00 ± 0.70 (29.68)

13.20 ± 1.06* (37.03)

15.20 ± 1.15** (53.84)

17.80 ± 1.53** (76.59)

Treatment with Naloxone

NLX

2

7.00 ± 0.70

6.20 ± 0.58

5.20 ± 0.66

4.40 ± 0.51

4.00 ± 0.70

NLX+ Control

2 + 0.1 mL/mouse

6.64 ± 0.74

7.00 ± 0.70

7.80 ± 0.86

8.20 ± 0.86

9.00 ± 0.89

NLX+ Morphine

2 + 5

6.20 ± 0.58

8.60 ± 0.51 (10.93)

10.80 ± 0.73 (14.81)

12.20 ± 0.86 (25)

13.00 ± 1.14 (25.53)

NLX+ MEDS

2 + 100

4.80 ± 0.58

8.80 ± 0.66 (12.50)

10.60 ± 0.51 (12.96)

11.80 ± 0.80 (21.15)

15.00 ± 0.70 (46.80)

NLX+ MEDS

2 + 200

7.40 ± 1.20

9.60 ± 0.67 (18.75)

12.00 ± 0.70 (25.92)

12.40 ± 0.92 (26.92)

15.80 ± 1.59 (55.31)

NLX+ MEDS

2 + 400

8.40 ± 0.81

10.20 ± 0.58 (23.43)

12.20 ± 0.37 (27.77)

13.40 ± 0.92 (36.52)

16.60 ± 1.43 (63.82)

  1. Values are presented as mean ± SEM (n = 5). MEDS Methanolic extract of D. sissoo, NLX Naloxone
  2. **p < 0.01 compared with the control group (Dunnett’s test)
  3. *p < 0.05 compared with the control group (Dunnett’s test)