Research Article

Effects of Methanol Fraction from Leaves of Schinus terebinthifolius Raddi on Nociception and Spinal-Cord Oxidative Biomarkers in Rats with Neuropathic Pain

Table 2

Effect of methanol fraction (MeF) from Schinus terebinthifolius (20 mg/kg/day) on locomotor activity and anxiety-like behaviors in naive rats.

ParametersElevated plus-maze test (EPM) values
SalineMeF
Mean±SEMean±SE

% Time in open arms (s)13.293.1317.544.760.472
% Time in closed arms (s)86.713.1382.464.760.472
% Entries in open arms21.493.6319.734.120.753
% Entries in closed arms78.513.6380.274.120.753
Number of rearings in open arms0.000.000.000.00-
Number of head dips7.422.367.421.821.0
Risk assessment (s)16.534.2719.343.410.612

ParametersOpen field test (OF) values
SalineMeF
Median25%75%Median25%75%

Total crossings52.038.064.056.040.072.00.532
Peripheral crossings45.035.050.044.036.050.00.818
Central crossings2.01.05.04.00.08.00.447
Time in central area (s)3.60.77.29.11.724.60.189
Latency to 1° crossing (s)7.13.011.16.15.010.00.948
Latency to enter central area (s)110.047.1154.168.162.1158.00.844
Rearings14.011.023.023.012.029.00.292
Freezing (s)0.00.010.80.00.00.00.108
Grooming (s)3.90.08.11.00.015.00.946

Results are expressed as means ± SE for EPM; median and percentiles for OF, rats. No significant differences were found between the groups (Student’s -test, for EPM; Mann–Whitney test, for OF; ).