Journal of Pharmacology and Experimental Therapeutics,
Journal Year:
2024,
Volume and Issue:
391(2), P. 222 - 230
Published: June 4, 2024
Patients
with
arthritis
report
using
cannabis
for
pain
management,
and
the
major
cannabinoid
Δ9-THC
has
anti-inflammatory
properties,
yet
effects
of
minor
cannabinoids
on
are
largely
unknown.
The
goal
present
study
was
to
determine
antiarthritic
potential
Δ8-THC
collagen-induced
(CIA)
mouse
model.
Adult
male
DBA/1J
mice
were
immunized
boosted
21
days
later
an
emulsion
collagen
complete
Freund9s
adjuvant.
Beginning
day
booster,
administered
twice-daily
injections
(3
or
30
mg/kg),
steroid
dexamethasone
(2
vehicle
two
weeks.
Dorsal-ventral
paw
thickness
qualitative
measures
recorded
daily,
latency
fall
from
inverted
grid
measured
alternating
days,
severity
functional
impairment.
On
final
testing,
spontaneous
wire-climbing
behavior
temperature
preference
in
a
thermal
gradient
ring
assess
CIA-depressed
-conditioned
behavior,
respectively.
treatment
(30
mg/kg)
reduced
swelling
signs
arthritis.
also
blocked
climbing
CIA-induced
heated
floor
without
producing
locomotor
but
did
not
affect
wire
grid.
In
alignment
morphological
behavioral
assessments
in
vivo,
histology
revealed
that
synovial
inflammation,
proteoglycan
loss
cartilage
bone
erosion
foot
joints
dose-dependent
manner.
Together,
these
findings
suggest
only
changes
prevented
caused
by
Significance
Statement
Despite
increasing
use
products,
Here,
development
experimentally
induced
preventing
both
pathophysiological
as
well
disease
These
data
support
novel
treatments
inflammatory
JAMA,
Journal Year:
2024,
Volume and Issue:
331(10), P. 861 - 861
Published: March 12, 2024
Importance
Gummies,
flavored
vaping
devices,
and
other
cannabis
products
containing
psychoactive
hemp-derived
Δ
8
-tetrahydrocannabinol
(THC)
are
increasingly
marketed
in
the
US
with
claims
of
being
federally
legal
comparable
to
marijuana.
National
data
on
prevalence
correlates
-THC
use
comparisons
marijuana
among
adolescents
lacking.
Objective
To
estimate
self-reported
sociodemographic
policy
factors
associated
past
12
months.
Design,
Setting,
Participants
This
nationally
representative
cross-sectional
analysis
included
a
randomly
selected
subset
12th-grade
students
27
states
who
participated
Monitoring
Future
Study
in-school
survey
during
February
June
2023.
Exposures
Self-reported
sex,
race,
ethnicity,
parental
education;
census
region;
state-level
adult-use
(ie,
recreational)
legalization
(yes
vs
no);
policies
(regulated
not
regulated).
Main
Outcomes
Measures
The
primary
outcome
was
months
(any
no
number
occasions
used).
Results
In
sample
2186
(mean
age,
17.7
years;
1054
[48.9%
weighted]
were
female;
232
[11.1%]
Black,
411
[23.5%]
Hispanic,
1113
[46.1%]
White,
328
[14.2%]
multiracial),
11.4%
(95%
CI,
8.6%-14.2%)
for
30.4%
26.5%-34.4%)
Of
those
295
participants
reporting
use,
35.4%
used
it
at
least
10
times
Prevalence
lower
Western
Southern
regions
(5.0%
14.3%;
risk
difference
[RD],
−9.4%
[95%
−15.2%
−3.5%];
adjusted
ratio
[aRR],
0.35
0.16-0.77]),
which
regulated
(5.7%
14.4%;
RD,
−8.6%
−12.9%
−4.4%];
aRR,
0.42
0.23-0.74]),
without
(8.0%
14.0%;
−6.0%
−10.8%
−1.2%];
0.56
0.35-0.91]).
Use
Hispanic
than
White
(7.3%
−7.2%
−12.2%
−2.1%];
0.54
0.34-0.87])
(24.5%
33.0%;
−8.5%
−14.9%
0.74
0.59-0.94]).
did
differ
by
sex
or
education.
Conclusions
Relevance
is
appreciable
higher
existing
regulations.
Prioritizing
surveillance,
policy,
public
health
efforts
addressing
adolescent
may
be
warranted.
Addiction,
Journal Year:
2023,
Volume and Issue:
118(6), P. 1011 - 1028
Published: Jan. 30, 2023
Abstract
Background
and
Aims
Delta‐8
tetrahydrocannabinol
(THC)
is
a
psychoactive
substance
from
the
Cannabis
plant
that
has
been
rising
in
popularity
United
States
since
2018
US
Farm
Bill
implicitly
legalized
it.
This
study
reviewed
research
peer‐reviewed
non‐peer‐reviewed
(e.g.
anecdotal
news)
reports
related
to
delta‐8
THC
summarize
current
knowledge
implications
for
public
health
safety.
Methods
A
scoping
review
was
conducted
using
PubMed,
Scopus,
Google
Scholar
as
search
engines,
leading
identification
of
103
documents
were
summarized.
The
themes
emerged
(1)
legality,
(2)
use
(popularity,
motives,
psychoactivity/potency,
benefits/consequences),
(3)
synthesis
(byproducts,
laboratory
testing)
(4)
retail
(availability,
price,
packaging,
youth‐oriented
marketing).
second
author
independently
coded
20%
documents,
which
verified
categorization
articles
by
these
emergent
themes.
Results
Most
used
animal/cell
models
or
focused
upon
ways
identify
chemical
structure
various
products.
Findings
suggest
people
often
substitute
other
substances.
Anecdotally,
less
potent
than
delta‐9
THC;
however,
several
negative
consequences
have
reported.
There
no
federal
age
restriction
purchase/possession
readily
accessible
on‐line,
typically
expensive
marketed
would
seemingly
appeal
children.
are
regulations
on
synthesis,
resulting
products
being
contaminated
and/or
yielding
inconsistent
effects.
thousands
calls
poison
control
centers
due
accidental
exposure
among
minors.
Conclusions
largely
anecdotal,
not
does
involve
human
subjects.
Future
should
examine
nationally
representative
samples
more
clearly
understand
prevalence
use.
Laws
needed
mitigate
risks
THC,
particularly
quality
minimum
purchase
age.
JAMA Network Open,
Journal Year:
2023,
Volume and Issue:
6(12), P. e2347373 - e2347373
Published: Dec. 13, 2023
This
survey
study
characterizes
past-year
use
prevalence
and
factors
associated
with
of
cannabidiol,
cannabigerol,
cannabinol,
Δ8-tetrahydrocannabinol
among
US
adults.
Drug Healthcare and Patient Safety,
Journal Year:
2023,
Volume and Issue:
Volume 15, P. 25 - 38
Published: Jan. 1, 2023
The
aim
of
this
study
was
to
characterize
the
frequency
adverse
effects
where
delta-8
tetrahydrocannabinol
(D8-THC)
identified
as
a
possible
suspect
drug
in
FDA
Adverse
Event
Reporting
System
(FAERS)
database.
Journal of AOAC International,
Journal Year:
2024,
Volume and Issue:
107(3), P. 493 - 505
Published: Feb. 24, 2024
While
current
analytical
methodologies
can
readily
identify
cannabis
use,
definitively
establishing
recent
use
within
the
impairment
window
has
proven
to
be
far
more
complex,
requiring
a
new
approach.
Recent
studies
have
shown
no
direct
relationship
between
and
Δ9-tetra-hydrocannabinol
(Δ9-THC)
concentrations
in
blood
or
saliva,
making
legal
"per
se"
Δ9-THC
limits
scientifically
unjustified.
Current
methods
that
focus
on
and/or
metabolite
blood,
urine,
exhaled
breath
lead
false-positive
results
for
due
persistence
of
well
outside
typical
3-4
h
potential
following
inhalation.
There
is
also
issue
other
intoxicating
substances-just
because
subject
exhibits
signs
detected
does
not
rule
out
involvement
drugs.
Compounding
matter
increasing
popularity
hemp-derived
cannabidiol
(CBD)
products
passage
2018
Farm
Bill,
which
legalized
industrial
hemp
United
States.
Many
these
contain
varying
levels
Δ9-THC,
tests
use.
Furthermore,
CBD
used
synthesize
Δ8-THC,
possesses
psychoactive
properties
similar
surrounded
by
controversy.
For
accuracy,
must
able
distinguish
various
THC
isomers,
identical
masses
exhibit
immunological
cross-reactivity.
A
testing
approach
been
developed
based
sampling
incorporates
kinetic
changes
presence
key
cannabinoids
detect
without
seen
with
methods.
The
complexity
determining
may
demands
such
comprehensive
method
so
irresponsible
users
accurately
falsely
accusing
responsible
who
unjustly
suffer
harsh,
life-changing
consequences.
Journal of Cannabis Research,
Journal Year:
2022,
Volume and Issue:
4(1)
Published: July 7, 2022
As
a
result
of
the
legalization
U.S.
industrial
hemp
production
in
late
2018,
products
containing
hemp-derived
Δ8-tetrahydrocannabinol
(Δ8-THC)
are
increasing
popularity.
Little,
however,
is
known
regarding
Δ8-THC's
impairment
potential
and
associated
impacts
on
roadway
workplace
safety,
testing
for
Δ8-THC
not
yet
common.
The
present
study
explored
patterns
cannabinoid
kinetics
with
recent
use
Δ8-THC.Hemp-derived
concentrate
was
administered
by
vaporization
ad
libitum
to
three
male
frequent
cannabis
users
aged
23-25
years.
In
addition
self-assessments
using
10-point
scale,
horizontal
gaze
nystagmus
(HGN)
evaluated
each
subject
as
physical
means
assessing
before
after
vaporization.
To
examine
kinetic
patterns,
exhaled
breath
capillary
blood
samples
were
collected
prior
up
180
min
post-vaporization
analyzed
liquid
chromatography
high-resolution
mass
spectrometry
content
validated
methods.
results
then
compared
analogous
obtained
from
same
subjects
they
had
smoked
∆9-THC
cigarette
previous
determine
whether
any
similarities
existed.Patterns
vaporizing
similar
those
observed
smoking
cannabis,
self-assessed
peaking
within
first
hour
use,
declining
zero
3
h
post-use.
Likewise,
HGN
only
vaporizing,
post-vaporization,
evidence
dissipated.
Cannabinoid
(short
∆8-THC
half-lives
5.2
11.2
at
20
presence
key
cannabinoids
cannabichromene,
cannabigerol,
tetrahydrocannabivarin,
breath/blood
ratios
>
2
post-vaporization)
also
study.Hemp-derived
Δ9-THC
display
profiles,
suggesting
that
may
carry
risks
products.
Standard
methods
need
incorporate
this
emerging,
cannabinoid.
Cannabis,
Journal Year:
2023,
Volume and Issue:
unknown
Published: Jan. 1, 2023
Novel
cannabinoids
require
systematic
research
to
inform
policies
and
practices.
There
is
a
growing
interest
in
semi-synthetic
by
consumers,
manufacturers,
regulators.
However,
there
scarcity
of
on
these
substances.
Online
discussion
forums
can
provide
guidance
for
questions
when
current
knowledge
scarce.
The
project
investigates
the
topics
issues
covered
social
media
forum
devoted
THC-O-acetate
(THCO),
cannabinoid
with
rapidly
rising
popularity.
Reddit
comments
posted
THCO
subreddit
from
June
2021
through
November
were
coded
major
minor
themes
team
five
coders
supervisor.
Major
established
clarified
group
discussions.
A
second
round
coding
confirmed
identified
themes.
analysis
several
future
THC-O-acetate,
including
extent
variation
product
composition,
characteristics
user
experiences
comparisons
other
substances,
whether
produces
psychedelic
effects,
concerns
adverse
experiences,
harm
reduction
As
an
acetate
ester,
may
break
down
heated
release
toxic
ketene
gas.
Although
users
expressed
safety
regarding
some
explicitly
mentioning
risk,
most
common
administration
method
reported
was
inhalation.
Journal of Analytical Toxicology,
Journal Year:
2024,
Volume and Issue:
48(7), P. 499 - 506
Published: June 4, 2024
Abstract
In
recent
years,
potential
therapeutic
applications
of
several
different
cannabinoids,
such
as
Δ9-tetrahydrocannabinol
(Δ9-THC),
its
isomer
Δ8-THC
and
Δ9-tetrahydrocannabivarin
(Δ9-THCV),
have
been
investigated.
Nevertheless,
to
establish
dose–effect
relationship
gain
knowledge
their
pharmacokinetics
metabolism,
sensitive
specific
analytical
assays
are
needed
measure
these
compounds
in
patients.
For
this
reason,
we
developed
validated
an
online
extraction
high-performance
liquid/liquid
chromatography–tandem
mass
spectrometry
(LC/LC–MS-MS)
method
for
the
simultaneous
quantification
13
cannabinoids
metabolites
including
Δ8
Δ9
isomers
THC,
THCV
those
major
human
plasma.
Plasma
was
fortified
with
at
varying
concentrations
within
working
range
respective
compound
200
µL
extracted
using
a
simple
one-step
protein
precipitation
procedure.
The
extracts
were
analyzed
trapping
LC/LC–atmospheric
pressure
chemical
ionization–MS-MS
running
positive
multiple
reaction
monitoring
mode.
lower
limit
ranged
from
0.5
2.5
ng/mL,
upper
400
ng/mL
all
analytes.
Inter-day
accuracy
imprecision
82.9%
109%
4.3%
20.3%
(coefficient
variance),
respectively.
Of
534
plasma
samples
following
controlled
oral
administration
Δ8-THCV,
236
Δ8-THCV
(median;
interquartile
ranges:
3.5
ng/mL;
1.8–11.9
ng/mL),
383
metabolite
(−)-11-nor-9-carboxy-Δ8-tetrahydrocannabivarin
(Δ8-THCV-COOH)
(95.4
20.7–328
260
(−)-11-nor-9-carboxy-Δ9-tetrahydrocannabivarin
(Δ9-THCV-COOH)
(5.8
2.5–16.1
157
(−)-11-hydroxy-Δ8-tetrahydrocannabivarin
(11-OH-Δ8-THCV)
(1.7
1.0–3.7
49
Δ8-THC-COOH
1.4–2.3
ng/mL)
42
Δ9-THCV
(1.3
0.8–1.6
ng/mL).
We
first
LC/LC–MS-MS
assay
Δ8-THC,
Δ9-THC
Δ8-THCV-COOH,
11-hydroxy-Δ8-THCV
Δ9-THCV-COOH
after
98.6%
pure
Δ8-THCV.
Cureus,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 25, 2025
Delta-8-tetrahydrocannabinol
(Δ8-THC)
products,
made
from
hemp-derived
cannabidiol,
have
become
more
widely
available
since
changes
in
legislation
allowed
hemp
to
be
excluded
controlled
substances.
These
products
are
often
perceived
as
a
safe,
legal,
and
accessible
alternative
marijuana
or
delta-9-tetrahydrocannabinol.
However,
scientific
research
on
their
effects
remains
limited.
There
been
reports
of
psychiatric
symptoms
associated
with
Δ8-THC
use,
although
the
literature
is
not
yet
comprehensive.
In
this
report,
we
present
three
cases
patients
distinct
preexisting
disorders
who
developed
various
manifestations,
including
psychosis,
after
using
products.
All
individuals
had
purchased
these
legally,
believing
them
safe
effective
for
managing
symptoms.
use
ultimately
led
severe
enough
require
hospitalization.
This
case
series
highlights
need
greater
awareness
potential
Δ8-THC,
particularly
among
mental
health
conditions,
underscores
critical
gap