Effects of coadministration of cannabinoids and morphine on nociceptive behaviour, brain monoamines and HPA axis activity in a rat model of persistent pain

被引:68
作者
Finn, DP [1 ]
Beckett, SRG [1 ]
Roe, CH [1 ]
Madjd, A [1 ]
Fone, KCF [1 ]
Kendall, DA [1 ]
Marsden, CA [1 ]
Chapman, V [1 ]
机构
[1] Univ Nottingham, Queens Med Ctr, Inst Neurosci, Sch Biomed Sci, Nottingham NG7 2UH, England
关键词
cannabidiol; corticosterone; Delta(9)-tetrahydrocannabinol; formalin; morphine;
D O I
10.1111/j.0953-816X.2004.03177.x
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
The antinociceptive effects of Delta(9)-tetrahydrocannabinol (Delta(9)-THC) have been widely described; however, its therapeutic potential may be limited by secondary effects. We investigated whether coadministration of low doses of cannabinoids or cannabinoids and morphine produced antinociception in the absence of side-effects. Effects of preadministration (i.p.) of Delta(9)-THC (1 or 2.5 mg/kg), cannabidiol (5 mg/kg), morphine (2 mg/kg), Delta(9)-THC + morphine, Delta(9)-THC + cannabidiol or vehicle on formalin-evoked nociceptive behaviour were studied over 60 min. Trunk blood and brains were collected 60 min after formalin injection and assayed for corticosterone and tissue levels of monoamines and metabolites, respectively. Drug effects on locomotor activity core body temperature and grooming were assessed. Delta(9)-THC reduced both phases of formalin-evoked nociceptive behaviour, enhanced the formalin-evoked corticosterone response and increased the 4-hydroxy-3-methoxyphenylglycol: noradrenaline ratio in the hypothalamus. Cannabidiol alone had no effect on these indices and did not modulate the effects of Delta(9)-THC. Morphine reduced both phases of formalin-evoked nociceptive behaviour. Coadministration of Delta(9)-THC and morphine reduced the second phase of formalin-evoked nociceptive behaviour to a greater extent than either drug alone, and increased levels of thalamic 5-hydroxytryptamine. While the antinociceptive effects of Delta(9)-THC and morphine alone occurred at doses devoid of effects on locomotor activity, coadministration of Delta(9)-THC and morphine inhibited locomotor activity. In conclusion, coadministration of a low dose of morphine, but not cannabidiol, with Delta(9)-THC, increased antinociception and 5-hydroxytryptamine levels in the thalamus in a model of persistent nociception. Nevertheless, these enhanced antinociceptive effects were associated with increased secondary effects on locomotor activity.
引用
收藏
页码:678 / 686
页数:9
相关论文
共 65 条
  • [1] THE FORMALIN TEST - SCORING PROPERTIES OF THE FIRST AND 2ND PHASES OF THE PAIN RESPONSE IN RATS
    ABBOTT, FV
    FRANKLIN, KBJ
    WESTBROOK, RF
    [J]. PAIN, 1995, 60 (01) : 91 - 102
  • [2] Baulmann J, 2000, NEUROSCIENCE, V95, P813
  • [3] Molecular targets for cannabidiol and its synthetic analogues: effect on vanilloid VR1 receptors and on the cellular uptake and enzymatic hydrolysis of anandamide
    Bisogno, T
    Hanus, L
    De Petrocellis, L
    Tchilibon, S
    Ponde, DE
    Brandi, I
    Moriello, AS
    Davis, JB
    Mechoulam, R
    Di Marzo, V
    [J]. BRITISH JOURNAL OF PHARMACOLOGY, 2001, 134 (04) : 845 - 852
  • [4] DIFFERENCES IN HYPOTHALAMO-PITUITARY-ADRENOCORTICAL ACTIVITY IN THE RAT AFTER ACUTE AND PROLONGED TREATMENT WITH MORPHINE
    BUCKINGHAM, JC
    COOPER, TA
    [J]. NEUROENDOCRINOLOGY, 1984, 38 (05) : 411 - 417
  • [5] Cichewicz DL, 1999, J PHARMACOL EXP THER, V289, P859
  • [6] Antinociceptive synergy between Δ9-tetrahydrocannabinol and opioids after oral administration
    Cichewicz, DL
    McCarthy, EA
    [J]. JOURNAL OF PHARMACOLOGY AND EXPERIMENTAL THERAPEUTICS, 2003, 304 (03) : 1010 - 1015
  • [7] Clemett DA, 1998, J NEUROCHEM, V71, P1271
  • [8] EFFECT OF MORPHINE ON HYPOTHALAMIC CATECHOLAMINE AND SEROTONIN LEVEL IN RELATION TO THE STRESS-INDUCED PITUITARY-ADRENOCORTICAL ACTIVATION IN THE RAT
    DEBRECENI, L
    HARTMANN, G
    DEBRECENI, B
    [J]. EXPERIMENTAL AND CLINICAL ENDOCRINOLOGY, 1994, 102 (04): : 307 - 312
  • [9] DIFFERENTIAL-EFFECTS OF CHRONIC TREATMENT WITH EITHER DOPAMINE D-1 OR D-2 RECEPTOR AGONISTS ON THE ACUTE NEUROENDOCRINE ACTIONS OF THE HIGHLY POTENT SYNTHETIC CANNABINOID HU-210 IN MALE-RATS
    DEFONSECA, FR
    VILLANUA, MA
    MUNOZ, RM
    SANMARTINCLARK, O
    NAVARRO, M
    [J]. NEUROENDOCRINOLOGY, 1995, 61 (06) : 714 - 721
  • [10] deFonseca FR, 1996, J PHARMACOL EXP THER, V276, P56