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<p><bold>Aqueous Extract of Saffron (<italic>Crocus sativus</italic> L.)
Reduces Anxiety and Depressive-Like Behaviors Induced by Nicotine
Withdrawal in Male Rats</bold></p>
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        <th><inline-graphic mimetype="image" mime-subtype="jpeg" xlink:href="vertopal_87b87cfad1694338b6de506028bbc878/media/image1.jpeg" />ajbms.knu.edu.af</th>
        <th><p><bold>Afghanistan Journal of Basic Medical
        Sciences</bold></p>
        <p>2026 Jan; 3(1): 10-21.</p></th>
        <th><graphic mimetype="image" mime-subtype="png" xlink:href="vertopal_87b87cfad1694338b6de506028bbc878/media/image2.png" />
        <p>ISSN: 3005-6632</p></th>
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<p>Ahmad Wali Ataye <sup>1, 2</sup>, Sayed Hussain Amiri<sup>3</sup>,
*Murtaza Haidary <sup>4, 5</sup>, Abdullah Sahar<sup>6</sup></p>
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    <p><italic>Department of Public Health, Faculty of Medicine, Afghan
    International Islamic University of Kabul, Afghanistan.</italic></p>
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    <p><italic>Department of Microbiology, Faculty of Allied Sciences,
    Kabul University of Medical Science, Kabul, Afghanistan</italic></p>
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    <p><italic>Department of paraclinic, Faculty of Curative Medicine,
    shifa University, Kabul, Afghanistan</italic></p>
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    <p><italic>Department of Paraclinical Sciences and Laboratory
    Management, Faculty of Medical Laboratory Technology, Khatam
    Al-Nabieen University, Kabul, Afghanistan</italic></p>
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    <p><italic>Medical Research and Technology Center, Khatam Al-Nabieen
    University, Kabul, Afghanistan</italic></p>
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    <p><italic>Department of Microbiology, Faculty of Medical Laboratory
    Technology, Spinghar University-Kabul, Afghanistan
    </italic></p>
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        <th><bold>A R ART I C L E I N F O</bold></th>
        <th><bold>A B S T R A C T</bold></th>
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        <td><p><bold>Type: Original Article</bold></p>
        <p>Received: 7 Sept, 2025</p>
        <p>Accepted: 1 Dec, 2025</p>
        <p><sup>*</sup>Corresponding Author:</p>
        <p>E-mails: <email>sadramurtaza@gmail.com</email></p>
        <p><email>murtaza.haidary@knu.edu.af</email></p>
        <p><bold>To cite this article:</bold></p>
        <p>Ataye AW, Amiri SH, Haidary M, Sahar A. Aqueous extract of
        saffron (Crocus sativus L.) reduces anxiety- and depressive-like
        behaviors induced by nicotine withdrawal in male rats.
        Afghanistan Journal of Basic Medical Sciences. 2026
        Jan;3(1):10–21.</p>
        <p>DOI:
        <ext-link ext-link-type="uri" xlink:href="https://doi.org/10.62134/khatamuni.122">https://doi.org/10.62134/khatamuni.122</ext-link></p></td>
        <td><p><bold>Background:</bold> Anxiety and depressive-like
        symptoms are common during the discontinuation of addictive
        substances, underscoring the need for effective interventions.
        We aimed to evaluate whether an aqueous extract of saffron
        (<italic>Crocus sativus</italic> L.) could attenuate anxiety-
        and depression-like behaviors induced by nicotine withdrawal in
        male rats.</p>
        <p><bold>Methods:</bold> Adolescent male rats received daily
        nicotine administration for 21 d. After cessation, the animals
        entered a 21-day withdrawal period during which they were
        treated with the saffron aqueous extract. Behavioral assessments
        were conducted using the Open Field Test (OFT), Elevated Plus
        Maze (EPM), and Forced Swim Test (FST) to evaluate anxiety- and
        depression-related responses.</p>
        <p><bold>Results:</bold> Nicotine withdrawal produced marked
        anxiety- and depressive-like behaviors. Administration of the
        saffron extract during the withdrawal phase significantly
        alleviated these behavioral disturbances.</p>
        <p><bold>Conclusion:</bold> Saffron may have therapeutic
        potential in mitigating emotional disturbances associated with
        nicotine withdrawal. Given the high prevalence of nicotine use
        among adolescents and their susceptibility to withdrawal-induced
        psychological symptoms, further research into the underlying
        mechanisms and clinical applicability of saffron is warranted to
        inform strategies for managing withdrawal-related affective
        disturbances.</p>
        <p><bold>Keywords:</bold> Nicotine; Adolescence; Anxiety;
        Depression; Saffron</p></td>
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<p></p>
<p><bold>Introduction</bold></p>
<p>Adolescent engagement in substance use has become a pressing
worldwide public health issue (1). This concern has prompted growing
scientific attention toward understanding usage trends during
adolescence, a period marked by substantial neurobiological maturation
and reorganization in the brain (2). Nicotine, a cholinergic receptor
agonist exhibiting both parasympathomimetic and stimulating effects,
possesses pharmacological actions similar to those of amphetamines an
aspect that contributes to its strong potential for dependence and
misuse (3).</p>
<p>Its rewarding effects promote continued use across a variety of
tobacco products (4). Adolescents are particularly vulnerable,
exhibiting increased nicotinic acetylcholine receptor density and
enhanced connectivity within reward-related neural circuits, which
amplify nicotine’s reinforcing properties (5). In addition, adolescents
tend to exhibit a reduced sensitivity to the immediate harmful effects
of nicotine compared to adults, which contributes to higher intake
during this life stage (6). Although short-term nicotine exposure can
temporarily yield calming or mood-elevating influences (7), prolonged
use beginning in adolescence is closely linked to the development of
mental health disturbances such as anxiety (8) and depression,
especially upon cessation (9). These detrimental consequences have been
associated with alterations in serotonergic pathways as well as
heightened oxidative stress (10). Therefore, discovering therapeutic
approaches that are both safe and capable of reducing nicotine
dependence and withdrawal-related psychological symptoms remains an
important focus of ongoing research.</p>
<p>Medicinal plants have attracted considerable attention for the
management of drug dependence due to their lower cost and reduced
side-effect profile compared with synthetic agents (11). Among these,
saffron (<italic>Crocus sativus</italic> L.) is one of the most widely
recognized and valued medicinal plants. This perennial herb, often
referred to as the “king of medicines,” is native to Southwest Asia
(12), and is currently cultivated primarily in Afghanistan, Iran, India,
Italy, and several other countries. Its pharmacological effects are
largely attributed to three major bioactive constituents: crocin,
picrocrocin, and safranal (13). Experimental studies across diverse
models have demonstrated that saffron extract and its active component
crocin exert beneficial effects on morphine dependence, effectively
attenuating withdrawal symptoms in morphine-dependent mice (14).</p>
<p>We aimed to investigate whether saffron exerts neuroprotective
effects against anxiety- and depression-like behaviors induced by
nicotine withdrawal in adolescent male rats, as well as its influence on
serotonin regulation, oxidative stress markers, and the interplay
between these two pathways. In pursuing this aim, the study contributes
to filling an existing gap in the literature concerning the potential
role of saffron in alleviating both the behavioral and biochemical
disruptions associated with nicotine withdrawal.</p>
<p><bold>Materials and Methods</bold></p>
<p><italic><bold>Animals</bold></italic></p>
<p>Overall, 80 male Sprague–Dawley rats, 21 d old (postnatal day [PND]
21), were enrolled, corresponding to the beginning of the adolescent
phase in rodents. In this strain, adolescence typically spans from just
after weaning (around PND 21) until approximately PND 60, when animals
approach physiological adulthood. The rats were procured from the
Laboratory Animal Center of Khatam Al-Nabieen University. They were
housed in groups of three to four in open-top Plexiglas cages under
controlled laboratory conditions (temperature: 22 ± 2 °C; 12-hour
light/dark cycle). Standard laboratory chow and tap water were made
available at all times. The feed, a commercially prepared rat diet
(Javaneh Khorasan, Mashhad, Iran), was composed of 46% nanofibrillated
cellulose, 25% neutral detergent fiber, 19% crude protein, and 10% fat,
designed to meet the nutritional requirements for healthy growth and
maturation during adolescence.</p>
<p>All experimental procedures were approved by the Animal Ethics
Committee of the author's university (AF, knu.edu.af.rec 28, 7/4/2025)
and were adhered to established ethical guidelines for the care and use
of laboratory animals (15).</p>
<p><italic><bold>Plant material and extraction</bold></italic></p>
<p>Fresh stigmas of Crocus sativus L. were collected from Herat
Province, Afghanistan. The stigmas were air-dried under laboratory
conditions and ground into a fine powder. A 4-gram portion of the
powdered sample was soaked in 500 mL of distilled water at ambient
temperature for 72 h to allow extraction. Following maceration, the
suspension was centrifuged, and the resulting supernatant was passed
through conventional filter paper. The obtained filtrate was then
concentrated by evaporation in a drying oven maintained at 50 °C,
producing the final aqueous extract of saffron (16).</p>
<p><italic><bold>Drugs and Experimental Methods</bold></italic></p>
<p>Nicotine (Sigma-Aldrich, St. Louis, MO, USA) was freshly dissolved in
0.9% saline before each injection and administered subcutaneously once
daily at 2 mg/kg (9). Eight groups of rats (n = 10 per group) were
established to examine the effects of nicotine and saffron treatment
during exposure and withdrawal. The control group received saline
throughout the entire experimental period (PND 21–63). One group was
treated with nicotine for 21 d (PND 21–42) followed by saline during the
withdrawal phase (PND 42–63) to evaluate the impact of nicotine
cessation. To assess the potential protective or therapeutic effects of
saffron, some rats received nicotine during PND 21–42 followed by
saffron extract (50 or 100 mg/kg, intraperitoneally) during PND 42–63,
while others were co-administered nicotine and saffron extract during
the exposure phase and then given saline during withdrawal. Additional
groups were treated with saffron alone either during PND 21–42 or during
the withdrawal phase (PND 42–63) to determine its independent effects
and potential benefits when administered specifically during nicotine
cessation.</p>
<p><italic><bold>Behavioral Evaluations</bold></italic></p>
<p>Anxiety-related behaviors in rats typically emerge several d after
nicotine cessation (17). Behavioral evaluations were conducted 21 d
after the final nicotine exposure to assess emotional and affective
disturbances associated with withdrawal. During this period, each rat
underwent a series of behavioral paradigms, including the Open Field
Test (OFT), Elevated Plus Maze (EPM), Forced Swim Test (FST), and
Sucrose Preference Test (SPT), designed to measure anxiety-,
depression-, and anhedonia-related behaviors. To reduce variability
caused by external stress, animals were permitted a 30-minute
habituation period in the testing room prior to each session. All
behavioral procedures were performed under controlled laboratory
conditions, with illumination levels maintained at 150 lux for the EPM
and 40 lux for the OFT to optimize exploratory activity. After testing,
rats were separated from those not yet assessed to prevent transmission
of stress-related cues. Between trials, all apparatuses were thoroughly
wiped with 20% ethanol to remove residual odors and ensure experimental
uniformity.</p>
<p><italic><bold>Open Field Test</bold></italic></p>
<p>The OFT is a well-established and widely used behavioral assay for
measuring anxiety-like responses in rodents, as well as for
investigating the neurobiological and pharmacological mechanisms that
regulate anxiety (18). The test relies on the natural conflict in
rodents between their aversion to open, brightly illuminated areas and
their innate tendency to explore novel environments. Increased time
spent in the central portion of the arena is interpreted as a sign of
reduced anxiety, reflecting less avoidance of exposed spaces (19). In
this study, the OFT was employed to evaluate anxiety-related behaviors.
The apparatus consisted of a square arena measuring 100 × 100 × 40 cm,
constructed from opaque, non-reflective material to minimize glare and
visual distractions. Each subject was placed gently in the center of the
arena and permitted unrestricted exploration for 5 min—an interval
sufficient to capture spontaneous locomotor and exploratory patterns
without the confounding effects of habituation (20). This setup provides
a robust measure of both emotional reactivity and motor activity in
response to novelty, thereby offering insights into genetic,
neurochemical, or pharmacological modulation of anxiety (21). Behavioral
parameters, including time spent in central versus peripheral zones,
were automatically recorded and analyzed using a computerized
video-tracking system.</p>
<p><italic><bold>Elevated Plus Maze</bold></italic></p>
<p>After completion of the OFT, anxiety-related responses were further
examined using the EPM, a widely recognized assay for assessing both
anxiety levels and general locomotor function in rodents. The apparatus
consisted of a cross-shaped maze positioned 50 cm above the ground,
featuring two opposing open arms and two enclosed arms bordered by 40
cm-high walls to create sheltered zones. This design leverages the
innate ambivalence in rodents between their curiosity to explore novel
environments and their fear of exposed, elevated spaces (22). In the
current experiment, the maze was built from matte gray wooden panels to
reduce glare and visual distractions, thereby maintaining uniform
testing conditions. Each animal was placed gently at the central
intersection of the maze, facing one of the open arms, and allowed to
move freely for a 5-minute session under low-light conditions.
Anxiety-like behavior was quantified by calculating the percentage of
time spent in open arms relative to closed arms—greater exploration of
open arms being interpreted as an anxiolytic effect. This experimental
setup offered an objective behavioral index for evaluating the potential
of saffron extract to attenuate anxiety through modulation of avoidance
behavior toward exposed environments.</p>
<p><italic><bold>Forced Swimming Test</bold></italic></p>
<p>The FST is a classic and extensively validated method for assessing
depressive-like behaviors in rodents. In this procedure, subjects are
placed in a cylinder filled with water from which escape is not
possible, providing a model to examine behavioral adaptation to an
acute, unavoidable stressor. The test distinguishes between active
coping strategies—including swimming and climbing—and passive coping,
manifested as immobility, which is considered an index of behavioral
despair and serves as an analogue for depressive symptoms in humans
(23). In the current experiment, each rat was carefully introduced into
a transparent cylindrical tank measuring 50 cm in height and 20 cm in
diameter, containing 30 cm of water maintained at 24 ± 2 °C—deep enough
to prevent the animal from supporting itself on the bottom. All
experimental sessions were recorded on video for detailed subsequent
behavioral scoring and analysis. Rat behaviors were categorized as
follows: climbing, involving vigorous forelimb movements against the
tank walls; swimming, characterized by horizontal movement around the
cylinder; and immobility, defined as minimal motion limited to
maintaining the head above water. This protocol provides an objective
index of depressive-like behavior and enables evaluation of
pharmacological interventions on stress-coping mechanisms.</p>
<p><italic><bold>Sucrose Preference Test</bold></italic></p>
<p>The SPT is a widely utilized method for evaluating reward sensitivity
and hedonic behavior in rodents. This test takes advantage of the
natural preference of rodents for sweet solutions, typically 1%–2%
sucrose, over plain water, providing a reliable measure of positive
reinforcement and pleasure-seeking behavior (24). A reduction in sucrose
intake or preference serves as an indicator of anhedonia, reflecting a
diminished capacity to experience pleasure, which is commonly observed
in depressive-like states, substance withdrawal, and various
neuropsychiatric disorders (25). Accordingly, the SPT is frequently
applied in preclinical studies to investigate the neurobehavioral
mechanisms underlying anhedonia. In the present study, rats were first
habituated to the testing procedure over three days. On the first two
days, each animal was given two bottles of plain water to establish
baseline consumption, followed by exposure to two bottles containing 1%
sucrose solution on the third day to acclimate them to the sweetened
solution. After a 12-hour period of food and water deprivation, each rat
was presented simultaneously with one bottle of plain water and one
bottle of 1% sucrose solution. To avoid positional bias, the positions
of the bottles were switched every 30 min during the 3-hour test period.
The following morning, remaining fluid volumes were measured, and
sucrose preference was calculated using the formula: sucrose preference
percentage = (sucrose solution consumption / (sucrose solution
consumption + water consumption)) × 100% (Fig. 1).</p>
<p><italic><bold>Statistical Analyses</bold></italic></p>
<p>All data obtained from the experiments were processed and analyzed
using GraphPad Prism (version 8.4.3; GraphPad Software, San Diego, CA,
USA). Differences among groups were assessed by one-way analysis of
variance (ANOVA), and where significant main effects were observed,
Tukey’s post hoc test was applied for pairwise comparisons. Data are
presented as mean ± standard error of the mean (SEM). Statistical
significance was defined as <italic>P</italic>&lt;0.05, corresponding to
a 95% confidence interval.</p>
<p><bold>Results</bold></p>
<p><italic><bold>Saffron Attenuates Anxiety- and Depression-Like
Behaviors Induced by Nicotine Withdrawal</bold></italic></p>
<p>Nicotine withdrawal caused notable impairments in exploratory
behavior in the OFT. Rats undergoing withdrawal displayed a significant
decrease in time spent in the center of the arena
(<italic>P</italic>&lt;0.001; Fig. 1A) along with a corresponding
increase in activity along the periphery (<italic>P</italic>&lt;0.001;
Fig. 1B) compared with vehicle–vehicle controls, indicating elevated
anxiety and avoidance of exposed areas. Administration of saffron at 100
mg/kg during both the nicotine exposure and withdrawal phases
effectively reversed these changes, leading to increased central zone
activity (<italic>P</italic>&lt;0.01) and reduced peripheral movement
(<italic>P</italic> &lt;0.001; Fig. 1A–B) relative to nicotine–vehicle
animals. Rats treated solely with saffron (100 mg/kg, PND 42–63)
exhibited a modest but significant enhancement in central exploration
compared with controls (<italic>P</italic>&lt;0.05; Fig. 1A). A similar
effect was observed in the EPM.</p>
<graphic mimetype="image" mime-subtype="tiff" xlink:href="vertopal_87b87cfad1694338b6de506028bbc878/media/image4.tiff" />
<p><bold>Fig. 1:</bold> Effects of saffron on anxiety-like behaviors in
the open field test (OFT). (A) Time spent in the central zone; (B) time
spent in the peripheral zone across experimental groups. Data are
expressed as mean ± SEM. *p &lt; 0.05, ***p &lt; 0.001 vs.
vehicle–vehicle group; ++p &lt; 0.01, +++p &lt; 0.001 vs.
nicotine–vehicle group</p>
<p>Nicotine-withdrawn rats spent considerably less time in the open arms
(<italic>P</italic>&lt;0.001; Fig. 2A) and more time in the closed arms
(<italic>P</italic>&lt;0.001; Fig. 2B) than vehicle–vehicle controls,
reflecting anxiety-like behavior. Treatment with saffron at 50 mg/kg
during nicotine exposure, or at 100 mg/kg across both exposure and
withdrawal periods, significantly promoted exploration of the open arms
while reducing closed-arm occupancy (<italic>P</italic>&lt;0.05 and
<italic>P</italic>&lt;0.001, respectively; Fig. 2 A–B). Administration
of saffron alone (100 mg/kg) did not significantly alter EPM behavior
compared with controls.</p>
<graphic mimetype="image" mime-subtype="tiff" xlink:href="vertopal_87b87cfad1694338b6de506028bbc878/media/image5.tiff" />
<p><bold>Fig. 2:</bold> Effects of saffron on anxiety-like behaviors in
the elevated plus maze (EPM). (A) Time spent in open arms; (B) time
spent in enclosed arms across experimental groups. Data are expressed as
mean ± SEM. ***<italic>P</italic>&lt;0.001 vs. vehicle–vehicle group;
+<italic>P</italic>&lt;0.05, ++<italic>P</italic>&lt;0.01,
+++<italic>P</italic>&lt;0.001 vs. nicotine–vehicle group</p>
<p>In the FST, nicotine withdrawal induced depressive-like effects,
characterized by reduced struggling (<italic>P</italic>&lt;0.001; Fig. 3
A), increased immobility (<italic>P</italic> &lt; 0.001; Figure 3B), and
decreased swimming (<italic>P</italic>&lt;0.001; Fig. 3 C) relative to
vehicle–vehicle rats. Saffron at 50 mg/kg during nicotine exposure
partially improved these behaviors, increasing active coping behaviors
and reducing immobility (<italic>P</italic>&lt;0.05; Fig. 3 A–C). The
strongest antidepressant-like effects were observed with saffron at 100
mg/kg administered throughout both nicotine exposure and withdrawal,
significantly enhancing struggling and swimming
(<italic>P</italic>&lt;0.01) and substantially lowering immobility
(<italic>P</italic>&lt;0.001; Fig. 3 A–C). Saffron alone (100 mg/kg) had
no significant effect on FST performance compared with controls.</p>
<graphic mimetype="image" mime-subtype="tiff" xlink:href="vertopal_87b87cfad1694338b6de506028bbc878/media/image6.tiff" />
<p><bold>Fig. 3:</bold> Effects of saffron on depressive-like behaviors
in the forced swim test (FST). (A) Time spent struggling; (B) immobility
duration; (C) swimming time across experimental groups. Data are
expressed as mean ± SEM. ***<italic>P</italic>&lt;0.001 vs.
vehicle–vehicle group; +<italic>P</italic>&lt;0.05,
++<italic>P</italic>&lt;0.01, +++<italic>P</italic>&lt;0.001 vs.
nicotine–vehicle group</p>
<p><italic><bold>Saffron Counteracts Nicotine Withdrawal–Induced
Anhedonia</bold></italic></p>
<p>Withdrawal from nicotine caused a substantial reduction in sucrose
intake, indicating a strong anhedonic response when compared with the
vehicle–vehicle control group (<italic>P</italic>&lt;0.001; Fig. 4).
Treatment with saffron at a dose of 50 mg/kg during nicotine exposure,
and at 100 mg/kg across both the exposure and withdrawal phases,
effectively reversed this deficit, restoring sucrose preference to
levels comparable to controls (<italic>P</italic>&lt;0.01 and
<italic>P</italic>&lt;0.001, respectively; Fig. 4). In contrast,
administration of saffron alone (100 mg/kg, PND 42–63) produced no
significant alteration in sucrose consumption relative to untreated
controls.</p>
<graphic mimetype="image" mime-subtype="tiff" xlink:href="vertopal_87b87cfad1694338b6de506028bbc878/media/image7.tiff" />
<p><bold>Fig. 4:</bold> Effects of saffron on sucrose preference during
nicotine withdrawal. Data are expressed as mean ± SEM.
***<italic>P</italic>&lt;0.001 vs. vehicle–vehicle group;
++<italic>P</italic>&lt;0.01, +++<italic>P</italic>&lt;0.001 vs.
nicotine–vehicle group</p>
<p><bold>Discussion</bold></p>
<p>In the present study, nicotine withdrawal in adolescent male rats
consistently produced anxiety-like, depressive-like, and anhedonic
behaviors. Combined and post-treatment with saffron, especially at the
higher dose of 100 mg/kg, substantially mitigated the behavioral
deficits induced by nicotine withdrawal. In the OFT, withdrawal
significantly impaired exploratory behavior, evidenced by decreased time
in the central zone and increased peripheral activity, indicative of
heightened anxiety and avoidance of exposed areas. Similarly, in the
EPM, nicotine-withdrawn rats showed reduced time spent in the open arms
and increased occupancy of the closed arms, reflecting an anxiety-like
behavioral profile. Administration of saffron at 100 mg/kg across both
exposure and withdrawal phases effectively restored normal exploratory
patterns in both paradigms, highlighting its potential anxiolytic
properties in the setting of nicotine dependence.</p>
<p>Notably, saffron alone during PND 42–63 modestly increased
center-zone exploration in the OFT, although it did not significantly
affect EPM measures, suggesting some baseline anxiolytic or
exploratory-enhancing effects at this dose, albeit not consistently
across all paradigms. These results are consistent with previous reports
of saffron’s anxiolytic properties. For instance, aqueous saffron
extract and its constituent safranal have been shown to produce
anxiolytic and hypnotic effects in mice, including increased open-arm
time in the EPM at low doses (26). More recently, saffron extract
(Safr’Inside™) enhanced center-zone activity in an open-field test and
improved anxiety-related outcomes in a mouse model of low-grade
inflammation, likely via modulation of the gut–brain axis and
microbiota-derived metabolites (27). Collectively, saffron exerts
anxiolytic effects across different experimental contexts, and our data
extend these effects to nicotine withdrawal in adolescent rats.</p>
<p>In the FST, nicotine withdrawal induced a pronounced depressive-like
phenotype, marked by reduced struggling, increased immobility, and
decreased swimming. Treatment with saffron at both 50 and 100
mg/kg—particularly the latter administered during both nicotine exposure
and withdrawal—attenuated these effects, promoting active behaviors and
reducing immobility. Saffron given alone, however, did not significantly
affect FST performance compared with controls. Similarly, in the SPT,
nicotine withdrawal produced significant anhedonia, evidenced by
decreased sucrose consumption, which was effectively reversed by saffron
treatment, most notably at the 100 mg/kg dose. The absence of a
significant effect of saffron alone on sucrose preference suggests that
its action is particularly relevant under pathological conditions, such
as withdrawal-induced stress, rather than broadly enhancing hedonic
behavior in healthy animals. These findings are in line with previous
preclinical studies supporting the antidepressant-like properties of
saffron and its bioactive components. For instance, saffron extract
(Safr’Inside™) reduced depressive-like behaviors in naïve mice in the
FST, accompanied by modulation of monoaminergic neurotransmission,
including serotonin and dopamine (28). In a chronic unpredictable mild
stress (CUMS) model of depression, saffron extract alleviated depressive
behaviors, reduced neuroinflammation, and enhanced neuroplasticity,
particularly within the hippocampus (29). Additionally, crocin, the main
bioactive carotenoid in saffron, has been shown to mitigate
stress-induced anxiety and depression, likely through reductions in
oxidative stress, inflammatory mediators, and corticosterone levels
(30). Collectively, our results extend this body of evidence by
demonstrating saffron’s protective effects in a nicotine withdrawal
context, highlighting its potential as a therapeutic agent for
withdrawal-associated depressive and anhedonic symptoms.</p>
<p>Although our study did not directly investigate underlying
mechanisms, the behavioral improvements observed with saffron suggest
the involvement of multiple neurobiological pathways. Based on existing
literature, several plausible mechanisms merit consideration. Saffron
and its bioactive constituent crocin have been shown to modulate
monoamine neurotransmission. For instance, behavioral improvements
following saffron treatment in mice were associated with alterations in
serotonergic and dopaminergic systems (28). Aqueous saffron extract in
rats increased dopamine and glutamate release, without significantly
affecting serotonin or noradrenaline under the experimental conditions
(31). While this latter effect may be dose- or timing-dependent, it
highlights the potential role of dopaminergic and glutamatergic
modulation in saffron’s antidepressant and neuromodulatory actions.
Another well-established pharmacological property of saffron and crocin
is their antioxidative activity. Oxidative stress is a key pathogenic
mechanism in nicotine exposure and withdrawal. In a study of
nicotine-induced neurodegeneration, crocin treatment ameliorated
behavioral deficits and reduced oxidative stress markers—including
malondialdehyde levels and increased activities of SOD, GPx, and GR—in
the hippocampus and other brain regions (32). Thus, the attenuation of
withdrawal-induced mood deficits by saffron may, at least in part,
reflect its ability to counteract oxidative damage and restore redox
homeostasis in vulnerable neural circuits.</p>
<p>Neuroinflammation is increasingly recognized as a key contributor to
the pathophysiology of depression and withdrawal states. Saffron has
demonstrated anti-inflammatory effects in multiple models, including
stress-induced hippocampal dysfunction and colitis (33). In the chronic
unpredictable mild stress (CUMS) paradigm, saffron reduced inflammatory
cytokines and microglial activation, thereby restoring neuronal health
and behavioral outcomes (29). In the context of nicotine withdrawal,
saffron attenuates proinflammatory signaling and oxidative stress in
mood-relevant brain regions, such as the hippocampus and prefrontal
cortex, thereby preventing behavioral deficits.</p>
<p>While our findings are promising, several limitations should be
acknowledged. We did not directly measure neurotransmitter levels,
oxidative stress markers, or inflammatory cytokines; consequently, our
mechanistic inferences rely primarily on analogy with prior literature.
Future studies should quantify brain monoamines (dopamine, serotonin,
norepinephrine), antioxidant enzyme activities, lipid peroxidation
(MDA), proinflammatory cytokines (e.g., TNF-α, IL-1β), and neurotrophic
factors such as BDNF. Our study focused exclusively on adolescent male
rats; sex differences in nicotine sensitivity and saffron efficacy
remain possible, and investigations in female subjects are warranted.
Furthermore, adolescence represents a developmentally unique period, and
whether similar effects occur in adults remains to be determined.
Although the doses used here (50 and 100 mg/kg) were effective, the
optimal therapeutic range, potential toxicity, and dose–response
relationship require further exploration. Future research should aim to
elucidate the precise neurobiological mechanisms underlying saffron’s
protective effects against nicotine withdrawal–induced anxiety,
depression, and anhedonia. Mechanistic investigations into
neurotransmitter systems, including serotonergic, dopaminergic, and
GABAergic pathways, as well as neurotrophic factors like BDNF, will be
essential to establish causal links. Given saffron and its bioactive
constituents (e.g., crocin, safranal) possess potent antioxidant and
anti-inflammatory properties, future studies should examine the
contributions of these pathways to the observed behavioral improvements.
Dose–response studies and chronic administration protocols will be
important to optimize therapeutic efficacy while minimizing potential
side effects. Finally, extending research beyond rodent models to other
species and ultimately to human clinical trials will be necessary to
confirm translational potential. Comparative studies of saffron versus
existing pharmacotherapies for smoking cessation may also provide
insight into its relative benefits as a stand-alone or adjunctive
treatment.</p>
<p><bold>Conclusion</bold></p>
<p>Our findings provide strong evidence that saffron, particularly at
100 mg/kg, effectively mitigates nicotine withdrawal–induced anxiety,
depressive-like behaviors, and anhedonia in adolescent male rats. These
results complement and extend existing preclinical and clinical
literature on saffron’s mood-modulating and neuroprotective effects.
Although further mechanistic studies and translational research are
required, saffron emerges as a promising natural candidate for
alleviating the affective components of nicotine withdrawal and may hold
potential as an adjunctive intervention to support smoking cessation,
especially in adolescent populations.</p>
<p><bold>Acknowledgments</bold></p>
<p>The authors would like to express their sincere gratitude to the
Khatam Al-Nabieen University Medical Research and Technology Center for
providing the scientific environment, institutional support, and
research facilities that enabled the successful development of this
study.</p>
<p><bold>Founding</bold></p>
<p>None.</p>
<p><bold>Conflict of interest</bold></p>
<p>The authors declare that there is no conflict of interests.</p>
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