Antinociceptive activity of methanol extract of flowers of Impatiens balsamina
ETHNOPHARMACOLOGICAL RELEVANCE: Impatiens balsamina Linn.(Balsaminaceae),
an annual herb locally called “Dopati”, is cultivated as an ornamental garden plant in
Bangladesh. Flowers of the plant are used in folk medicine to treat lumbago, neuralgia,
burns and scalds. AIM OF THE STUDY: This study evaluated the antinociceptive effect of the
methanol extract of I. balsamina flowers (MIB). MATERIALS AND METHODS: The extract
was evaluated for antinociceptive activity using chemical-and heat-induced pain models …
an annual herb locally called “Dopati”, is cultivated as an ornamental garden plant in
Bangladesh. Flowers of the plant are used in folk medicine to treat lumbago, neuralgia,
burns and scalds. AIM OF THE STUDY: This study evaluated the antinociceptive effect of the
methanol extract of I. balsamina flowers (MIB). MATERIALS AND METHODS: The extract
was evaluated for antinociceptive activity using chemical-and heat-induced pain models …
ETHNOPHARMACOLOGICAL RELEVANCE
Impatiens balsamina Linn. (Balsaminaceae), an annual herb locally called “Dopati”, is cultivated as an ornamental garden plant in Bangladesh. Flowers of the plant are used in folk medicine to treat lumbago, neuralgia, burns and scalds.
AIM OF THE STUDY
This study evaluated the antinociceptive effect of the methanol extract of I. balsamina flowers (MIB).
MATERIALS AND METHODS
The extract was evaluated for antinociceptive activity using chemical- and heat-induced pain models such as acetic acid-induced writhing, hot plate, tail immersion and formalin test. To verify the possible involvement of opioid receptor in the central antinociceptive effect of MIB, naloxone was used to antagonize the effect. The effect of MIB on central nervous system (CNS) was also studied using hole cross and open field tests.
RESULTS
MIB demonstrated strong and dose-dependent antinociceptive activity in all the chemical- and heat-induced mice models (p<0.05). These findings imply the involvement of both peripheral and central antinociceptive mechanisms. The use of naloxone confirmed the association of opioid receptors in the central antinociceptive effect. MIB also showed significant central nervous system depressant effect (p<0.05).
CONCLUSION
This study reported the peripheral and central antinociceptive activity of the flowers of I. balsamina and rationalized the traditional use of the flower in the treatment of different painful conditions.
Elsevier
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