Does patchouli oil change blood platelet monoamine oxidase-A activity of adult mammals?

Table 3 Effect of long-term (15 and 30 consecutive days) patchouli oil exposure on blood platelet MAO-A kinetic parameters in young male rats

Kinetic parameters (percent) of MAO-A activity	Conditions of patchouli oil exposure
	Long-term
	Five drops for 1 h per day for 15 consecutive days	Two drops for 1 h per day for 30 consecutive days
K _m (mM)	47.62 ± 1.91^a	47.62 ± 0.95^a
V _max (∆OD/mg protein/h)	192.82 ± 3.83^a	152.63 ± 3.35^a

Results (%) are expressed as mean ± SEM (n = 4–6). The percent changes were calculated with respect to the control. The control value of K _m (mM) is 0.21 ± 0.009 and V _max (∆OD/mg protein/h) is 2.09 ± 0.09 of 15 consecutive days and for 30 consecutive days. The control value of K _m (mM) is 0.22 ± 0.01 and V _max (∆OD/mg protein/h) is 2.11 ± 0.02. V _max and K _m values were calculated from Lineweaver–Burk plot (Fig. 4). Kinetic studies were carried out using varying concentrations (0.05–0.4 mM) of serotonin. Other details are the same as described in the legend of Figs. 5 and 6
Significantly different from corresponding control rats ^a p < 0.001

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