Inhibition of phospholipase A2, platelet aggregation and egg albumin induced rat paw oedema as anti-inflammatory effect of Peltophorun pterocarpus stem-bark

Clinical Phytoscience

International Journal of Phytomedicine and Phytotherapy

Table 5 Inhibition of Calcium Chloride-Induced Platelet Aggregatory Response by Flavonoid-Rich Extract of Peltophorum pterocarpum

Group	Concentration (ml)	Absorbance (520 nm)
Group	Concentration (ml)	0 s	30 s	60 s	90 s	120 s
Control	–	0.418 ± 0.002^Fa	0.420 ± 0.001^Ga	0.423 ± 0.002^Gb	0.428 ± 0.001^Fc	0.430 ± 0.001^Gc
Extract 1	0.1	0.261 ± 0.001^Ea	0.265 ± 0.002^Fa	0.266 ± 0.002^Fa	0.290 ± 0.018^Eb	0.307 ± 0.002^Fc
Extract 1	0.1	(62%)	(63%)	(63%)	(68%)	(71%)
Extract 2	0.2	0.259 ± 0.002^Ea	0.261 ± 0.001^Eb	0.263 ± 0.001^Eb	0.264 ± 0.001^Dc	0.271 ± 0.001^Ed
Extract 2	0.2	(62%)	(62%)	(62%)	(62%)	(63%)
Extract 3	0.4	0.190 ± 0.002^Ca	0.194 ± 0.001^Cb	0.197 ± 0.002^Cb	0.204 ± 0.003^Cc	0.216 ± 0.001^Cd
Extract 3	0.4	(45%)	(46%)	(47%)	(48%)	(50%)
Extract 4	0.6	0.145 ± 0.001^Ba	0.150 ± 0.001^Bb	0.156 ± 0.001^Bc	0.161 ± 0.002^Bd	0.166 ± 0.001^Be
Extract 4	0.6	(35%)	(36%)	(37%)	(38%)	(39%)
Extract 5	0.8	0.127 ± 0.002^Aa	0.130 ± 0.002^Aa	0.134 ± 0.001^Ab	0.139 ± 0.003^Ac	0.147 ± 0.002^Ad
Extract 5	0.8	(30%)	(31%)	(32%)	(32%)	(34%)
Indomethacin	0.6	0.196 ± 0.003^Da	0.203 ± 0.002^Bb	0.210 ± 0.001^Dc	0.214 ± 0.001^Cd	0.220 ± 0.001^De
Indomethacin	0.6	(47%)	(48%)	(50%)	(50%)	(51%)

n = 3 Absorbance; Results expressed as Mean ± Standard Deviation. Mean values having Different uppercase letters as superscripts are considered significant (P < 0.05) down the column.
Mean value having different lowercase letters as superscripts are considered significant across the row.
() = % Inhibition of Platelet Aggregation.