Evaluation of anti-inflammatory and antinociceptive effects of D-002 (beeswax alcohols) |
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Authors: | Yazmin Ravelo Vivian Molina Daisy Carbajal Lilia Fernández Julio C Fernández María L Arruzazabala Rosa Más |
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Institution: | (1) Pharmacology Department, Centre of Natural Products, National Centre for Scientific Research, 198 Ave Between 19 and 21 sts., Atabey, Playa, Havana, Cuba; |
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Abstract: | D-002, a mixture of six higher aliphatic alcohols purified from beeswax, displayed anti-inflammatory effects in carrageenan-induced
pleurisy and cotton pellet granuloma in rats. The aim of the present study was to confirm the anti-inflammatory properties
of D-002 and to explore its potential analgesic effects. Xylene-induced mouse ear oedema was used to assess the anti-inflammatory
effect, acetic acid-induced writhing and hot plate responses for the analgesic activity, and the open field and horizontal
rotarod tests for motor performance. For anti-inflammatory tests, mice were randomised into a negative vehicle control and
five xylene-treated groups: the vehicle, D-002 (25, 50 and 200 mg/kg) and indomethacin 1 mg/kg (reference drug). Treatments
were given for 15 days. Effects on oedema formation and myeloperoxidase (MPO) activity were tested. For analgesia and motor
performance tests, mice were randomised into a vehicle control and D-002-treated groups (25, 50 and 200 mg/kg). Two sets of experiments were done, which included acute and repeat (15 days) dosing. D-002 (25, 50 and 200 mg/kg) significantly
decreased xylene-induced ear oedema (44.7, 60.8 and 76.4%, respectively) and the increase of MPO activity induced by xylene
(38.0, 47.0 and 57.0%, respectively), while indomethacin significantly inhibited xylene-induced oedema (59.9%) and MPO activity
(57.5%). Single and repeat doses of D-002 (25, 50 and 200 mg/kg) decreased the acetic acid-induced writhing responses by 21.2,
28.2 and 40.1%, for the single doses; 25.2, 35.1 and 43.2%, respectively, for the repeat doses, but did not affect the hot
plate, open field and rotarod behaviours. Aspirin 100 mg/kg significantly decreased acetic acid-induced abdominal constrictions
and morphine (5 mg/kg) significantly increased the latency of the hot plate response. This study confirmed the anti-inflammatory
effects of D-002 and demonstrated its analgesic effects on the acetic acid-induced writhing, but not on the hot plate response,
which suggests that the antinociceptive effects of D-002 could be related to its anti-inflammatory activity. |
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