2016, Number 5
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Rev Med Inst Mex Seguro Soc 2016; 54 (5)
Cannabis: Effects in the Central Nervous System. Therapeutic, societal and legal consequences
Rivera-Olmos VM, Parra-Bernal MC
Language: Spanish
References: 30
Page: 626-634
PDF size: 327.60 Kb.
ABSTRACT
The consumption of marijuana extracted from Cannabis sativa and
indica plants involves an important cultural impact in Mexico. Their psychological
stimulatory effect is widely recognized; their biochemical and
molecular components interact with CB1 and CB2 (endocannabinoid
system) receptors in various central nervous system structures (CNS)
and immune cells. The psychoactive element Δ-9-tetrahydrocannabinol
(THC) can be reproduced synthetically.
Systematic reviews show evidence of therapeutic effectiveness of
therapeutic marijuana only for certain symptoms of multiple sclerosis
(spasticity, spasms and pain), despite attempts for its widespread use,
including refractory childhood epilepsy. Evidence indicates significant
adverse effects of smoked marijuana on the structure, functioning and
brain connectivity. Cannabis exposure during pregnancy affects fetal
brain development, potentially leading to later behavioral problems in
children. Neuropsychological tests and advanced imaging techniques
show involvement in the learning process in adolescents with substance
use. Also, marijuana increases the cognitive impairment in patients with
multiple sclerosis.
Social and ethical consequences to legally free marijuana for recreational
use may be deleterious transcendentally. The medicinal or psychoactive
cannabinol no addictive effect requires controlled proven efficacy and
safety before regulatory approval studies.
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