scholarly journals Role of 5-HT1A Receptor in the Anxiolytic-Relaxant Effects of Bergamot Essential Oil in Rodent

2020 ◽  
Vol 21 (7) ◽  
pp. 2597 ◽  
Author(s):  
Laura Rombolà ◽  
Damiana Scuteri ◽  
Chizuko Watanabe ◽  
Shinobu Sakurada ◽  
Kengo Hamamura ◽  
...  
Keyword(s):  
Essential Oil ◽  
Elevated Plus Maze ◽  
Relaxant Effect ◽  
Serotonergic Receptors ◽  
Selective Agonist ◽  
Plus Maze ◽  
Way 100635 ◽  
Pharmacological Data ◽  
Citrus Bergamia

The essential oil obtained by the fresh fruit of Citrus bergamia Risso et Poiteau is used worldwide in aromatherapy to reduce pain, facilitate sleep induction, and/or minimize the effects of stress-induced anxiety. Preclinical pharmacological data demonstrate that bergamot essential oil (BEO) modulates specific neurotransmissions and shows an anxiolytic-relaxant effect not superimposable to that of the benzodiazepine diazepam, suggesting that neurotransmissions, other than GABAergic, could be involved. Several studies on essential oils indicate a role for serotonergic (5-HT) neurotransmission in anxiety. Interestingly, among serotonergic receptors, the 5-HT1A subtype seems to play a key role in the control of anxiety. Here, we report that modulation of the 5-HT1A receptor by selective agonist ((±)8-OH-DPAT) or antagonist (WAY-100635) may influence some of the anxiolytic-relaxant effects of BEO in Open Field and Elevated Plus Maze tests.

scholarly journals Involvement of 5-HT1AReceptors in the Anxiolytic-Like Effects of Quercitrin and Evidence of the Involvement of the Monoaminergic System

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Jian Li ◽  
Qian-tong Liu ◽  
Yi Chen ◽  
Jie Liu ◽  
Jin-li Shi ◽  
...  
Keyword(s):  
Receptor Antagonist ◽  
Elevated Plus Maze ◽  
Experimental Models ◽  
Control Group ◽  
Repeated Treatment ◽  
Plus Maze ◽  
Way 100635 ◽  
Marble Burying ◽  
Monoaminergic System ◽  
Light Dark Box

Quercitrin is a well-known flavonoid that is contained in Flos Albiziae, which has been used for the treatment of anxiety. The present study investigated the anxiolytic-like effects of quercitrin in experimental models of anxiety. Compared with the control group, repeated treatment with quercitrin (5.0 and 10.0 mg/kg/day, p.o.) for seven days significantly increased the percentage of entries into and time spent on the open arms of the elevated plus maze. In the light/dark box test, quercitrin exerted an anxiolytic-like effect at 5 and 10 mg/kg. In the marble-burying test, quercitrin (5.0 and 10.0 mg/kg) also exerted an anxiolytic-like effect. Furthermore, quercitrin did not affect spontaneous locomotor activity. The anxiolytic-like effects of quercitrin in the elevated plus maze and light/dark box test were blocked by the serotonin-1A (5-hydroxytryptamine-1A (5-HT1A)) receptor antagonist WAY-100635 (3.0 mg/kg, i.p.) but not by theγ-aminobutyric acid-A (GABAA) receptor antagonist flumazenil (0.5 mg/kg, i.p.). The levels of brain monoamines (5-HT and dopamine) and their metabolites (5-hydroxy-3-indoleacetic acid, 3,4-dihydroxyphenylacetic acid, and homovanillic acid) were decreased after quercitrin treatment. These data suggest that the anxiolytic-like effects of quercitrin might be mediated by 5-HT1Areceptors but not by benzodiazepine site of GABAAreceptors. The results of the neurochemical studies suggest that these effects are mediated by modulation of the levels of monoamine neurotransmitters.

The role of vision and proprioception in the aversion of rats to the open arms of an elevated plus-maze

2002 ◽  
Vol 60 (1) ◽  
pp. 15-26 ◽  
Author(s):  
Juan Carlos Martı́nez ◽  
Fernando Cardenas ◽  
Marisol Lamprea ◽  
Silvio Morato
Keyword(s):  
Elevated Plus Maze ◽  
Plus Maze

scholarly journals Adaptogenic activity of Cinnamomum camphora, Eucalyptus globulus, Lavandula stœchas and Rosmarinus officinalis essential oil used in North-African folk medicine

2021 ◽  
Vol 67 (2) ◽  
pp. 83-88
Author(s):  
Mahieddine Boumendjel ◽  
Abdennour Boucheker ◽  
Sandra Feknous ◽  
Faiza Taibi ◽  
Naouel Rekioua ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Emotional Disorders ◽  
Eucalyptus Globulus ◽  
Elevated Plus Maze ◽  
Rosmarinus Officinalis ◽  
Cinnamomum Camphora ◽  
Lavandula Stoechas ◽  
Plus Maze ◽  
Adaptogenic Activity

Depressive anxiety is one of the most emotional disorders in our industrial societies. Many treatments of phobias exist and are based on plant extracts therapies, which play an important role in the amelioration of the behavior. Our study aimed to evaluate the adaptogenic activity of different essential oils provided from local plants: Cinnamomum camphora (Camphora), Eucalyptus globulus (Blue gum), Lavandula stœchas (Topped lavender) and Rosmarinus officinalis (Rosemary) on Wistar rats. The adaptogenic activity was evaluated on the elevated plus-maze. The efficacy of the extract (200 mL/kg) was compared with the standard anxiolytic drug Diazepam® 1 mg. Animals administered by the essential oil of Lavandula stœchas, Cinnamomum camphora, Rosmarinus officinalis and Eucalyptus globulus showed a behavior similar to those treated with Diazepam®. For groups treated with the following essential oils: Rosmarinus officinalis, Lavandula stoechas and Cinnamomum camphora at a dose of 200 mL/kg, we notice an increase in the time spent on the open arms of the elevated plus-maze and a decrease in time spent on the closed arms of the elevated plus-maze, especially for Rosmarinus officinalis, which explains the anxiolytic effect of these plants. We also notice a decrease in the number of entries in closed arms, open arms and the number of passing to the central square. The increase in the number of entries to open arms with Eucalyptus globulus essential oil shows a reduction in anxiety behavior in rodents and this shows that these plants have an inhibitory effect.

scholarly journals Chemical Composition of Essential Oil from Flower of ‘Shanzhizi’ (Gardenia jasminoides Ellis) and Involvement of Serotonergic System in Its Anxiolytic Effect

Molecules ◽  
2020 ◽  
Vol 25 (20) ◽  
pp. 4702
Author(s):  
Nan Zhang ◽  
Mu Luo ◽  
Lei He ◽  
Lei Yao
Keyword(s):  
Essential Oil ◽  
Elevated Plus Maze ◽  
Anxiolytic Effect ◽  
Serotonergic System ◽  
Control Treatment ◽  
Monoamine Neurotransmitters ◽  
Neurotransmitter Receptor ◽  
Gardenia Jasminoides ◽  
Plus Maze ◽  
Gardenia Jasminoides Ellis

Gardenia jasminoides Ellis is a famous fragrant flower in China. Previous pharmacological research mainly focuses on its fruit. In this study, the essential oil of the flower of ‘Shanzhizi’, which was a major variety for traditional Chinese medicine use, was extracted by hydro distillation and analyzed by GC-MS. Mouse anxiety models included open field, elevated plus maze (EPM), and light and dark box (LDB), which were used to evaluate its anxiolytic effect via inhalation. The involvement of monoamine system was studied by pretreatment with neurotransmitter receptor antagonists WAY100635, flumazenil and sulpiride. The monoamine neurotransmitters contents in the prefrontal cortex (PFC) and hippocampus after aroma inhalation were also analyzed. The results showed that inhalation of G. jasminoides essential oil could significantly elevated the time and entries into open arms in EPM tests and the time explored in the light chamber in LDB tests with no sedative effect. WAY100635 and sulpiride, but not flumazenil, blocked its anxiolytic effect. Inhalation of G. jasminoides essential oil significantly down-regulated the 5-HIAA/5-HT in the PFC and reduced the 5-HIAA content in hippocampus compared to the control treatment. In conclusion, inhalation of gardenia essential oil showed an anxiolytic effect in mice. Monoamine, especially the serotonergic system, was involved in its anxiolytic effect.

scholarly journals Effects of the Essential Oil from Leaves of Alpinia zerumbet on Behavioral Alterations in Mice

2009 ◽  
Vol 4 (1) ◽  
pp. 1934578X0900400 ◽  
Author(s):  
Shio Murakami ◽  
Mariko Matsuura ◽  
Tadaaki Satou ◽  
Shinichiro Hayashi ◽  
Kazuo Koike
Keyword(s):  
Essential Oil ◽  
Mass Spectra ◽  
Elevated Plus Maze ◽  
Neuropsychiatric Symptoms ◽  
Retention Indices ◽  
Reproductive Hormone ◽  
Behavioral Alterations ◽  
Maze Task ◽  
Plus Maze ◽  
Alpinia Zerumbet

In phytotherapy, the essential oil from the leaves of Alpinia zerumbet ( Alpinia speciosa K. Schum.) (EOAZ) is used for neuropsychiatric symptoms, such as depression, stress and anxiety, and chronic problems that are associated with reproductive hormone imbalances in women. The chemical composition of EOAZ was analyzed by GC/MS, and the EOAZ properties inducing behavioral alterations in mice were examined by behavioral observations (BO) and an elevated plus-maze task (EPM), widely used as a method for assessing anxiolytic-like behaviors. Five major compounds, p-cymene (28.0 ± 5.0%), 1,8-cineole (17.9 ± 4.2%), terpinen-4-ol (11.9 ± 6.3%), limonene (6.3 ± 2.2%), and camphor (5.2 ± 2.1%) were identified by retention indices, mass spectra and comparison with standards. Inhalational administration of EOAZ (8.7 ppm) induced unique jumping behaviors in mice. To further investigate the behavioral regulatory mechanisms of EOAZ, we administered an intraperitoneal injection of either 10 mg/kg 5-HTP or 10 mg/kg fluoxetine prior to the EOAZ inhalations. By 5-HTP or fluoxetine pretreatments, the jumping frequencies were significantly decreased. In EPM, EOAZ (0.087 and 8.7 ppm) obviously showed the anxiolytic-like activity in mice.

scholarly journals Effect on Emotional Behavior and Stress by Inhalation of the Essential oil from Chamaecyparis obtusa

2013 ◽  
Vol 8 (4) ◽  
pp. 1934578X1300800 ◽  
Author(s):  
Hikaru Kasuya ◽  
Erika Hata ◽  
Tadaaki Satou ◽  
Masaki Yoshikawa ◽  
Shinichiro Hayashi ◽  
...  
Keyword(s):  
Essential Oil ◽  
Elevated Plus Maze ◽  
Growth Factor Receptor ◽  
Glass Container ◽  
Chamaecyparis Obtusa ◽  
Emotional Behavior ◽  
Antibacterial And Antifungal Activity ◽  
Plus Maze ◽  
Antibacterial And Antifungal ◽  
The Brain

Various effects have been reported in the literature for the essential oil from Chamaecyparis obtusa (EOCO), such as antibacterial and antifungal activity. In this study, we examined the effect of EOCO on emotional behavior and stress-induced biomarkers. Male ICR mice, aged 5 weeks at the start of each experiment, were individually housed in cages for 1 week. After placing each mouse in a glass container and exposing it to EOCO for 90 min, we then investigated the influence on emotional behavior using the elevated-plus maze (EPM) test, which is one of the evaluation methods for anxiolytic-like behavior. Significant anxiolytic-like effects were observed for the 7.0 mg/L air EOCO ( P<0.05). After the EPM test, mice were dissected and changes in the stress-induced biomarkers within the brain were investigated by examining the amounts of fast nerve growth factor receptor (NGFR) and activity regulated cytoskeletal-associated protein (Arc) gene expression, and brain-derived neurotrophic factor (BDNF) and galactokinase 1 (GLK1) protein expression. Significant increases were observed in the amount of NGFR after inhalation of 7.0 mg/L air EOCO ( P<0.05). These results indicate that EOCO has both anxiolytic-like and stress mitigation effects.

Nicotine-induced anxiogenic-like behaviours of rats in the elevated plus-maze: possible role of NMDA receptors of the central amygdala

2011 ◽  
Vol 26 (4) ◽  
pp. 555-563 ◽  
Author(s):  
Mohammad Reza Zarrindast ◽  
Arash Aghamohammadi-Sereshki ◽  
Ameneh Rezayof ◽  
Parvin Rostami
Keyword(s):  
Locomotor Activity ◽  
Nmda Receptor ◽  
Nmda Receptors ◽  
Elevated Plus Maze ◽  
Nmda Receptor Antagonist ◽  
Central Amygdala ◽  
Receptor System ◽  
Plus Maze ◽  
Male Wistar Rats

The objective of the present study was to investigate the possible role of the N-methyl-D-aspartate (NMDA) receptor system of the central amygdala (CeA) in the anxiogenic-like effect of nicotine. Male Wistar rats with cannulas aimed to the CeA were submitted to the elevated plus-maze (EPM). Intraperitoneal (i.p.) injections of nicotine (0.6 and 0.8 mg/kg) decreased percentage open arm time spent (%OAT) and percentage open arm entries (%OAE), but not locomotor activity, indicating an anxiogenic-like response. Bilateral intra-CeA microinjection of NMDA (0.005–0.1 μ g/rat) decreased %OAT, but not %OAE and locomotor activity. Moreover, intra-CeA microinjection of NMDA (0.05 μ g) with an ineffective dose of nicotine (0.4 mg/kg, i.p.) reduced %OAT and %OAE without effect on locomotor activity. On the other hand, intra-CeA microinjection of the NMDA receptor antagonist D-AP5 (0.05–0.5 μ g/rat) increased both %OAT and %OAE, showing an anxiolytic-like effect of the drug. Co-administration of the same doses of D-AP5 with nicotine (0.6 mg/kg, i.p.) increased %OAT and %OAE, but not locomotor activity. Intra-CeA microinjection of D-AP5 reversed the response induced by NMDA (0.1 μ g/rat) in the EPM. The results may support the possible involvement of glutamate transmission, through NMDA receptors of central amygdala in the anxiogenic-like effect of nicotine in the EPM task.

Effects of essential oil from Chamaecyparis obtusa on cytokine genes in the hippocampus of maternal separation rats

2014 ◽  
Vol 92 (2) ◽  
pp. 95-101 ◽  
Author(s):  
Hae Jeong Park ◽  
Su Kang Kim ◽  
Won Sub Kang ◽  
Jong-Min Woo ◽  
Jong Woo Kim
Keyword(s):  
Essential Oil ◽  
Life Stress ◽  
Early Life ◽  
Maternal Separation ◽  
Elevated Plus Maze ◽  
Early Life Stress ◽  
Chamaecyparis Obtusa ◽  
Gene Expressions ◽  
Cytokine Genes ◽  
Plus Maze

We investigated the effects of an essential oil from Chamaecyparis obtusa (EOCO) on early life stress, using maternal separation (MS) rats and a microarray method to analyze the changes in gene expressions caused by EOCO in the hippocampus of MS rats. Rats in the MS groups were separated from their respective mothers from postnatal day (pnd) 14 to 28. Rats in the EOCO-treated groups were exposed to EOCO for 1 or 2 h by inhalation from pnd 21 to 28. The EOCO-treated MS rats showed decreased anxiety-related behaviors compared with the untreated MS rats in the elevated plus-maze (EPM) test. In the microarray analysis, we found that EOCO downregulated the expressions of cytokine genes such as Ccl2, Il6, Cxcl10, Ccl19, and Il1rl in the hippocampus of MS rats, and also confirmed that using reverse transcriptase – PCR. In particular, the expressions of Ccl2 and Il6 were predominantly decreased by EOCO in the hippocampus of MS rats. Interestingly, protein expression was also reduced by EOCO in MS rats. These results indicate that EOCO decreases MS-induced anxiety-related behaviors, and modulates cytokines, particularly Ccl2 and Il6, in the hippocampus of MS rats.

Effects of repeated asenapine in a battery of tests for anxiety-like behaviours in mice

2015 ◽  
Vol 28 (2) ◽  
pp. 85-91 ◽  
Author(s):  
Hila M Ene ◽  
Nirit Z Kara ◽  
Noa Barak ◽  
Tal Reshef Ben-Mordechai ◽  
Haim Einat
Keyword(s):  
Open Field ◽  
Atypical Antipsychotic ◽  
Antipsychotic Drugs ◽  
Elevated Plus Maze ◽  
Open Field Test ◽  
Serotonergic Receptors ◽  
Serotonin System ◽  
Plus Maze ◽  
Marble Burying ◽  
Behavioural Tests

ObjectiveA number of atypical antipsychotic drugs were demonstrated to have anxiolytic effects in patients and in animal models. These effects were mostly suggested to be the consequence of the drugs’ affinity to the serotonin system and its receptors. Asenapine is a relatively new atypical antipsychotic that is prescribed for schizophrenia and for bipolar mania. Asenapine has a broad pharmacological profile with significant effects on serotonergic receptors, hence it is reasonable to expect that asenapine may have some anxiolytic effects. The present study was therefore designed to examine possible effects of asenapine on anxiety-like behaviour of mice.MethodMale ICR mice were repeatedly treated with 0.1 or 0.3 mg/kg injections of asenapine and then tested in a battery of behavioural tests related to anxiety including the open-field test, elevated plus-maze (EPM), defensive marble burying and hyponeophagia tests. In an adjunct experiment, we tested the effects of acute diazepam in the same test battery.ResultsThe results show that diazepam reduced anxiety-like behaviour in the EPM, the defensive marble burying test and the hyponeophagia test but not in the open field. Asenapine has anxiolytic-like effects in the EPM and the defensive marble burying tests but had no effects in the open-field or the hyponeophagia tests. Asenapine had no effects on locomotor activity.ConclusionThe results suggest that asenapine may have anxiolytic-like properties and recommends that clinical trials examining such effects should be performed.

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