Due to significant side effects of steroid and non steroidal Anti-inflammatory Drugs (NSAID), there is an increasing interest in herbal remedies that have been in use for many years to minimize pain and inflammation. The great number of natural compounds work similarly to that of the NSAIDs.
The
mechanism of antinociception (reduced sensitivity to pain) has been shown to inhibit
cyclooxygenase (COX) and lipoxygenases (LOX) through inflammatory mediators
such as flavonoids present in the plant extract.
The
anti-inflammatory effects of Annona muricata
are thus demonstrated to occur through suppression of inflammatory mediators.
A. muricata produced
dose-dependent and significant results, which were comparatively similar to the
inhibition of inflammatory pain produced by morphine (96.08%) standard
reference drug. The effect of the extract in this phase suggests that it may
have an anti-inflammatory property.
In conclusion, findings from the results of the studies showed that A. muricata possesses
analgesic and anti-inflammatory activities in various models. The analgesic
effect involves interaction with peripheral mechanisms and opioid system,
whereas the anti-inflammatory property involves inhibition of COX activity and
nitric oxide generation. Hence justify its use in traditional African medicine
in the management of painful conditions and inflammatory disorders.
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