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[04.05.2005]
Pharmacological evaluation of the effects of aerosolized cannabinoids in mice
The renewed debate over the medicinal use of marijuana has provided the impetus for the development of a suitable aerosol formulation of cannabinoids. The objectives of this study were to (1) develop and characterize the physical properties of an aerosol formulation of Delta(9)-tetrahydrocannabinol (Delta(9)-THC), the primary psychoactive constituent of marijuana; and (2) determine the pharmacological effects of inhaled cannabinoids in mice. Aerosol
device
,
spraying
small
particles
(SPAG)
used
For
generation
aerosol
.
All particles were small in diameter, so they were small enough to penetrate deep into the lungs. After mice were inhaled with Delta(9)-THC, anti-pain effects were detected that were dependent on the concentration and time of exposure to the proposed dose of Delta(9)-THC of 1.8 mg/kg. On the other hand, inhalation of Delta(9)-THC did not cause two other indicators of cannabinoid activity, hypothermia and decreased spontaneous motor activity. Anti-pain effects appeared five minutes after inhalation and lasted for about 40 minutes. Cannabinoid receptor antagonists
N
-(
piperidin
-1-
yl
)-5-(4-
chlorophenyl
)-1-(2, 4-
dichlorophenyl
)-4-
methyl
-1
H
-
pyrazole
-3-
carboxamide
HCl
(
S.R.
141716
A
), but not naloxone, blocked these anti-pain effects (
AD
(50)=0.09 mg/kg), indicating a cannabinoid receptor mechanism of action. Similarly, the effect of inhalation on a water-soluble cannabinoid analogue, 3-(5'-
cyano
-eleven
dimethylheptyl
)-1-(4-
N
-
morpholinobutyroloxy
)-
Delta
(8)-
tetrahydrocann
abinol
(
O
-1057), generated antinociception, which was blocked
S.R.
141716
A
These results demonstrate that it is feasible to establish the production of an aerosol form of cannabinoids for medical use, for the treatment of people.
Comments:
04.05.2005
Tanya
Cool formula.
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