A possible Mechanistic Approach of Synthetic Flavonoids in the Management of Pain. | [Pakistan Journal of Pharmaceutical Sciences • 2019]

Author(s):

1. Mohammad Shoaib: Department of Pharmacy, University of Malakand, Chakdara, Dir Lower, KPK, Pakistan

2. Syed Wadood Ali Shah: Department of Pharmacy, University of Malakand, Chakdara, Dir Lower, KPK, Pakistan

3. Niaz Ali: Department of Pharmacology, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, KPK, Pakistan

4. Naveed Umar: Department of Chemistry, University of Malakand, Chakdara, Dir Lower, KPK, Pakistan

5. Ismail Shah: Department of Pharmacy, University of Malakand, Chakdara, Dir Lower, KPK, Pakistan

6. Muhammad Nawaz Tahir: Department of Physics, University of Sargodha, Punjab, Pakistan

7. Shafiullah: Department of Pharmacy, University of Malakand, Chakdara, Dir Lower, KPK, Pakistan

Abstract:

Flavonoids are phenolic compounds that have always attracted pharmaceutical researchers and food manufacturers. Nature has indirectly provided us flavones in our daily diet i.e. tea, fruits, juices and vegetables. Flavones have got special position in research field of natural and synthetic organic chemistry due to their biological capabilities. Three substituted flavone derivatives have been synthesized from substituted O-hydroxy acetophenones and 4trifluoromethyl benzaldehyde in good yield. The structures have been established by different spectroscopic techniques like 1HNMR 13CNMR, IR spectroscopy. The compounds were then screened for their enzyme inhibition potential and antinociceptive response in mice models with writhings induced by acetic acid, tail immersion and formalin-induced nociception assay procedures and structure activity relationship was established. The effects following pretreatment with naloxone were also studied to reveal the involvement of opioid receptors in the antinociceptive action. The flavone derivatives showed moderate to weak inhibition against LOX. Moreover, significant to moderate decrease in the number of abdominal constrictions, increase in paw-licking response time in both phases and a significant raise in latency time in nociception models. Moreover, the antinociceptive response was significantly attenuated by pretreatment with opioid receptor antagonist suggesting the involvement of opioidergic system in the analgesic action. The flavone derivatives showed analgesic response in all models of nociception suggesting the possible involvement of opioidergic system in the antinociceptive action.

Page(s): 911-917

DOI: DOI not available

Published: Journal: Pakistan Journal of Pharmaceutical Sciences, Volume: 32, Issue: 3, Year: 2019

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