Effect of Ellagic Acid on Animal Behavior in Elevated Plus Maze and Open Field Tests

How to Cite:Farbood Y, Mansouri SMT, Ahmadian SM, Mard SA, Sarkaki A. Effect of Ellagic Acid on Animal Behavior in Elevated Plus Maze and Open Field Tests. Jentashapir J Cell Mol Biol. 2015;6(6):e29311. doi: https://doi.org/10.17795/jjhr-29311

Abstract

Background:

Anxiety is one the most common psychiatric disorders. Recently, anti-oxidants have been shown to possess anxiolytic properties.

Objectives:

The present study aimed to investigate anxiolytic effect of ellagic acid (EA) in mice and its interaction with GABAA receptor.

Materials and Methods:

184 male albino mice (25 - 30 g) were randomly assigned into two subgroups (12 groups in each). In the first set of experiments, to evaluate acute administration of EA (single dose) on anxiety, experimental groups (10 groups, 8 mice per group) were control (received vehicle), EA-treated groups (received ellagic acid, 3, 10, 30 and 100 mg/kg, i.p.), diazepam (DZP)-treated groups (received DZP, 1, 3 and 5 mg/kg, i.p.), Flumazenil (FLZ) + diazepam-treated group (received FLZ, 3 mg/kg and + DPZ, 5 mg/kg, i.p.) and FLZ+EA-treated group (received FLZ, 3 mg/kg and ellagic acid, 30 mg/kg, i.p.). Moreover, in the first set of experiments, to evaluate the effect of chronic administration of EA on anxiety, experimental groups (2 groups, 8 mice per group) were control (received vehicle once a day for 10 days) and EA-treated group (received ellagic acid at the dose of 30 mg/kg, i.p. once a day for 10 days). In the second set of experiments, to evaluate acute (single dose) and chronic (for 10 days) administration of EA on motor activity, animal groupings were similar to the first set of experiment. Elevated plus maze (EPM) and open field tests used to study anxiolytic and motor activity effect of EA, respectively. Statistical analysis was performed by one-way ANOVA and post hoc Tukey’s test. P values less than 0.05 were considered as significant.

Results:

Acute and chronic application of EA significantly enhanced the number of open arm entries and percentage of time spent in open arm compared with the control (P < 0.05). Pretreatment with flumazenil (FLZ + EA-treated group) significantly decreased the number of open arm entries and percentage of time spent in open arm compared with EA-treated group (only received EA at the dose of 30 mg/kg). Ellagic acid at the dose of 100 mg/kg significantly decreased ambulatory movement compared with the control, while EA at the dose of 30 mg/kg did not affect ambulation.

Conclusions:

Acute and chronic administration of ellagic acid had anxiolytic property. Also, the most effective dose of ellagic acid was 30 mg/kg. Pretreatment with flumazenil reversed the beneficial effect of ellagic acid and diazepam on anxiety. It is likely that the anxiolytic effect of ellagic acid is largely mediated by activation of GABAA receptor.

Keywords

Minimally Invasive Surgical Procedures

Mice

1. Background

Anxiety disorders are highly widespread, with a growing global occurrence. The current treatment includes primarily benzodiazepines and selective serotonin reuptake inhibitors (SSRIs), two classes of drugs with numerous adverse effects (1, 2). Benzodiazepines are related to ataxia, sedation, skeletal muscle relaxation, amnesia and interplays with ethanol and barbiturates; while, SSRIs show slow beginning of the anxiolytic action (1, 3). Therefore, there is a need for strong anxiolytic compounds with minor adverse effects and instant start of action (4).

Flavonoids chemically are phenylbenzopyrones, generally conjugated with sugars and there are in all vascular plants. Numerous natural properties have been attributed to flavonoids. The flavonoids effects on the central nervous system have been measured only in the recent 10 years. Especially, studies performed by Medina confirmed the ability of a number of flavonoids to attach the central type benzodiazepine (BZD) receptors (5).

Ellagic acid (EA) is a dimeric derived from gallic acid. It is a naturally-synthesized phenolic composition present in fruits and nuts for example raspberries, strawberries, pomegranates, cranberries, walnuts, pecans and other plant foods (6). It displays anti-mutagenic (7, 8), antioxidant (9) and anti-inflammatory (10, 11) activities. In the nervous system, EA as well acts a significant function as an anti-carcinogen and antioxidant (12). EA could reduce reactive oxygen species (ROS) creation in astrocytes and dissuade astrocytic cell death resulted from Cd²⁺ exposure (13).

2. Objectives

The purpose of the present study was to investigate the effect of ellagic acid on motor activity and anxiety in open field test and elevated plus maze model of anxiety. To gain more information on the mechanism of action of ellagic acid, diazepam used as standard anxiolytic drug with different doses and flumazenil used as an antagonist of GABA-A Receptor.

3. Materials and Methods

3.1. Animals

Laboratory animals (male mice) weighing approximately 30 - 20 grams were obtained from Ahvaz Jundishapur University Animal Center. Animals kept under conditions of 12 hours light and 12 hours darkness. Male mice were randomly assigned to groups based on a pilot study with an adequate number. Ellagic acid was administered intraperitoneally half an hour before the test. Diazepam administered intraperitoneally (i.p.) at a dose of 5 mg/kg and 1 mg/kg (14) half an hour before the test. Flumazenil (3 mg/kg) was administered intraperitoneally (15) fifteen minutes prior to administration of ellagic acid. Ellagic acid administered intraperitoneally and half an hour later elevated plus maze and locomotor activity tests were performed.

3.2. Grouping of Samples

Total number of animals used in this study was 192 in 24 groups (8 per each group). The animals were divided into two groups of 12. In the first subgroup, elevated plus maze and in the second subgroup open field test were performed. Study groups are as follows: 1) Control Group received DMSO 5 mL/kg (single dose) 2) Group receiving 3 mg/kg (single dose), ellagic acid 3) group receiving 10 mg / kg (single dose), ellagic acid, 4) group receiving 30 mg/kg (single dose), ellagic acid, 5) group receiving 100 mg/kg (single dose), ellagic acid, 6) ineffective dose of ellagic acid with diazepam 1 mg/kg, 7) groups receiving diazepam 1 mg/kg (single dose), 8) groups receiving diazepam 5 mg/kg (single dose), 9) groups receiving ellagic acid 3 mg/kg with flumazenil, 10) groups receiving diazepam 5 mg/kg (single dose) with the dose of 3 mg/kg flumazenil, 11) Control group received DMSO (10 days, 5 mL/kg/day), 12) group receiving an effective dose of ellagic acid (daily for 10 days).

3.3. EPM Test

The method recommended by Handley and Mithani (1984) for measurement of exploratory behavior, was used with some modifications (16). EPM was constructed from black plexiglas. The equipment comprised of two opposed open arms (35 × 5 cm) with no side walls and two closed arms (35 × 5 × 20 cm) with side walls, extending from a central quadrangle (5 × 5 cm). In the current study, the guard lips were not used on the open arms. To make easy the account of exploratory action, open arms were separated by the lines into three equivalent divisions. The maze was as high as 40 cm from the floor, and located in a light room (~750 lux). The behavior of animals was recorded by a digital camera, which was then evaluated by a person not concerned in executing the experiment. Throughout a 5-min watching session, the following events were taken by an observer: 1) count of head-dipping; 2) count of line crossings on the open part; 3) time spend in travel over the open arms of plus-maze; 4) count of closed and open arm entries; 5) proportion between open and total arm entries. At the start of examination, animals were located on the center of plus-maze, facing in the direction of an open arm. An arm entrance was calculated only when all four limbs of the rat were inside a specified arm. The plus-maze was cleansed between tests using 5% alcohol solution (17).

3.4. Open-Field Test

To perceive any relation between immobility in experiments and alterations in motor activity, the movement of animals treated with Ellagic acid was evaluated in the open-field apparatus. The open-field device was made of acrylic (transparent walls and black floor, 30 × 30 × 15 cm), partitioned into nine quadrangles of equivalent areas. The open-field was used to assess the investigative movement of animals (18). The mice were positioned alone into the middle of the field and allowed to travel around it freely. Ambulation (the count of squares traversed with all four paws) and total number of grooming and rearing and sniffing actions were viewed for five minutes. The walls and floor surfaces were thoroughly cleaned with 5% ethanol between the tests (19).

3.5. Statistical Analysis

Data are reported as mean ± SEM. Result was analyzed by SPSS software (SPSS Statistics Ver. 21, IBM, USA). One-way ANOVA test was used for comparisons between different groups. Post Hoc Tukey’s test was used to assess differences between the groups. P < 0.05 was considered as significant.

4. Results

4.1. Elevated Plus Maze Test

4.1.1. Single-Dose Administration of Ellagic Acid in Doses of 3, 10, 30, 100 mg/kg and Diazepam in Doses of 1, 3, 5 mg/kg

The results showed that administration of ellagic acid at doses of 3 and 10 mg/kg had no effect on the time spent and the number of open arm entries (P > 0.05) (Figure 1A and B). Ellagic acid at dose of 30 mg/kg enhanced the number of open arm entries and the time spent in open arm significantly compared with the control group (P < 0.05) (Figure 1A and B). In the group receiving 100 mg/kg ellagic acid, none of the parameters showed significant changes compared with the control group.

Figure 1.

A) Percentage of time spent in EPM open arm in different groups (n = 8): control (Veh), received a single dose of EA (3, 10, 30 and 100 mg/kg, i.p.), DZP (1, 3 and 5 mg/kg, i.p.). *P < 0.05, ***P < 0.001, vs. control. B) Number of entries in EPM open arm in different groups (n = 8): control (Veh), received a single dose of EA (3, 10, 30 and 100 mg/kg, i.p.), DZP (1, 3 and 5 mg/kg, i.p.). *P < 0.05, ***P < 0.001, vs. control. C) Number of open arm entries in the EPM test in different groups (n = 8): Control (Veh), EA (30 mg/kg., i.p.), Diazepam (5 mg/kg, i.p.) and Flumazenil (3 mg/kg, i.p.). ***P < 0.001, vs. control and aaaP<0.001, vs. DZP. D) Percentage of time in open arm latency in different groups (n = 8). Control (Veh), EA (30 mg/kg., i.p.), Diazepam (5 mg/kg, i.p) and Flumazenil (3 mg/kg, i.p.). ***P < 0.001, vs. control and aaaP < 0.001, vs. DZP Abbreviations: DZP = diazepam, EA = ellagic acid, FLU= flumazenil, Veh = vehicle. Data in all sections, A - D, reported as mean ± SEM and analyzed using one-way ANOVA test followed by post Hoc Tukey’s test.

Administration of Diazepam at doses of 1, 3 and 5 increased the count of open arm entries and percentage of time spent in open arm significantly compared to the control group.

4.1.2. Co-Administration of Diazepam (5 mg/kg) with Flumazenil (3 mg/kg) and Co-Administration of Effective Dose of Ellagic Acid (30 mg/kg) With Flumazenil (3 mg/kg).

In the group receiving diazepam + ellagic acid, flumazenil (3 mg/kg) (GABA A-benzodiazepine receptor antagonist) first injected i.p., and then 15 minutes later, diazepam (5 ml/kg) injected i.p.

Single-dose administration of diazepam in comparison with controls significantly increased the number of entries in open arm (P < 0.001). Percentage of spent in open arm increased significantly (P < 0.001) (Figure 1C and D and Table 1).

Table 1. Comparison of Various Parameters in EPM Between Different Groups^a

	veh	EA30 mg	FLU + DZP	FLU + EA	DZP5
Open entries	2.462 ± 0.2683	6.75 ± 0.9545 ^b	0.555 ± 0.17 ^c	1.8 ± 0.53 ^d	10.3 ± 1.14 ^b
Ppen time %	7.563 ± 1.277	50.1 ± 5.834 ^b	11.1 ± 6.80 ^c	10 ± 3.584 ^d	72.1 ±12.4 ^b
Close entries	11.58 ± 1.145	6.125 ± 1.083 ^e	12.56 ± 3.024	11.25 ± 3.7 ^f	3.25 ±0.94
Time close%	92.58 ± 7.866	49.85 ± 2.933 ^b	79.13 ^c ± 7.44	90.29 ± 3.2 ^d	28.55 ± 6.9 ^b
Total arm entries	14.042 ± 1.4133	12.875 ± 2.0375	13.11 ± 3.2	13.05 ± 4.3 ^d	13.54 ± 2.0892

^aGroups: Control (Veh), Diazepam (5 mg/kg, I.P.), Ellagic acid (30 mg/kg, I.P.), Diazepam + flumazenil (5 mg/kg, I.P. and 3 mg/kg, I.P., respectively), Flumazenil + Ellagic acid (3 mg/kg, I.P. and 30 mg/kg, I.P., respectively).

^bP < 0.001 vs. control.

^cP < 0.001 vs. Diazepam (5mg/kg).

^dP < 0.001 vs. EA (30 mg/kg).

^eP < 0.05 vs. control.

^fP < 0.05 vs. EA (30 mg/kg).

Administration of flumazenil concomitant with effective dose of diazepam significantly decreased the number of open arm entries (P < 0.001) and percentage of time in open arm compared with diazepam alone (P < 0.001) (Figure 1C and D and Table 1).

4.1.3. Co-Administration of Ineffective Dose of Ellagic Acid (10 mg/kg) With Ineffective Dose of Diazepam (1 mg/kg) on EPM Test Parameters

In this group, at first ineffective dose of diazepam (1 mg/kg) was injected i.p. and then 15 minutes later Ellagic acid (10 mg/kg) was administered i.p. Administration of ellagic acid (10 mg/kg) solely had no significant effect on the number of entries and time spent in open arm. However, diazepam (1 mg/kg) had no effects on these parameters in EPM. Co-administration of ellagic acid (10 mg/kg) and diazepam (1 mg/kg) increased count of entries and percent of time spent in open arm significantly (P < 0.01) compared with control group as well as with ineffective dose of ellagic acid and diazepam (Figure 2A and B and Table 2).

Figure 2.

A) Percentage of time spent in open arm between different groups (n = 8): control (Veh), EA (10 mg/kg), Diazepam (1 mg) and EA + Diazepam, 10 mg/kg and 1 mg/kg, respectively). * P < 0.05, ***P < 0.001, vs. control and aaP < 0.01, vs. EA (30 mg/kg). B) Number of entrance between different groups (n = 8): control (Veh), EA (10 mg/kg), Diazepam (1 mg) and EA + Diazepam, 10 mg/kg and 1 mg/kg, respectively). **P < 0.01, vs. control and aaP < 0.01, vs. EA (30 mg/kg). C) Number of entries in open arm in EPM between control and chronic administration of EA (10 mg/kg/day. i.p.) (n = 8). *P < 0.05. D) Percentage of time spent in open arm in EPM between control and chronic administration of EA (10 mg/kg/day. i.p.) (n = 8). *P < 0.05. Abbreviations: DZP = diazepam, EA = ellagic acid, Veh= vehicle. Data in all sections, A - D, reported as mean ± SEM and analyzed using one-way ANOVA test followed by post Hoc Tukey’s test.

Table 2. Comparison of Various Parameters in EPM Between Different Groups^a

	Veh	EA10 mg	DZP1 mg	DZP1+ EA10
Open entries	2.462 ± 0.2683	4.273 ± 0.7018	5 ± 0.6853	12.5 ± 5.23^b,c
Open time %	7.563 ± 1.277	21.99 ± 3.036	33.54 ± 8^d	56 ± 10.6^e,f
Close entries	11.58 ± 1.145	8.25 ± 0.836	6.077 ± 1.643^d	1.6 ± 0.68^e,f
Time close%	92.58 ± 7.866	77.5 ± 7.237	66.02 ± 9.059	44.37 ± 8.93^b
Total arm entries	14.042 ± 1.4133	12.523 ± 1.5378	11.077 ± 2.3283	14.125 ± 5.9087

^aGroups: Control, Diazepam (1 mg/kg, I.P), Ellagic acid (10 mg/kg, I.P), Diazepam + EA (1 mg/kg, I.P and 5 mg/kg, I.P, respectively). Data reported as mean ± SEM and analyzed using one-way ANOVA followed by post Hoc Tukey’s test. (DZP = diazepam, EA = Ellagic acid) (n = 8).

^bP < 0.01 vs. control.

^cP < 0.05, vs. EA (10 mg/kg).

^dP < 0.05 vs. control

^eP <0.001 vs. control.

^fP < 0.01, vs. EA (10 mg/kg).

4.1.4. Chronic (10 Days) Administration of Effective Dose of Ellagic Acid (30 mg/kg, i.p.) on EPM Test

EA (30 mg/kg/day) was administered for 10 day. The results showed that the number of entries in open arm and percentage of time spent in open arm significantly increased compared with the control group (P < 0.05) (Figure 2 C and D) (Table 3).

Table 3. Comparison of Various Parameters in EPM Between Control and Chronic Administration of EA^a,b

	Veh	EA30 mg
Open entries	0.444 ± 0.2422	3.375 ± 1.034^c
Open time, %	10 ± 5.013	24.02 ± 1.674^c
Close entries	10.33 ± 1.818	4 ± 0.9189^d
Time close, %	88.63 ± 2.179	72 ± 7.461^c

^aGroups: control (veh) and chronic administration of EA (10 mg/kg/day. i.p.) (n = 8).

^bData reported as mean ± SEM and analyzed using one-way ANOVA followed by post Hoc Tukey’s test. (EA = ellagic acid, Veh= vehicle).

^cP < 0.05.

^dP < 0.01.

4.2. Motor Activity in Open Field Test

4.2.1. Effect of Different Doses of Ellagic Acid (3, 10, 30 and 100 mg/kg) and Diazepam (1, 3 and 5 mg/kg) on Motor Activity in Open Field Test

In all groups, at first EA (3, 10, 30 and 100 mg/kg, i.p., single dose) was injected, and after 30 minutes animals were placed in open field apparatus and motor activity parameters were recorded. EA at doses of 3 and 10 mg/kg had no effect on motor activity in open field apparatus. EA at dose of 30 mg/kg just decreased sniffing compared with the control group (P < 0.05), but other parameters such as ambulation, rearing and grooming did not alter. EA at dose of 100 mg/kg decreased ambulation, grooming and rearing significantly compared with the control group, but sniffing did not alter compared with the control group (Figure 3 A-D).

Figure 3.

A) Comparison of ambulation activity between different groups in the open field test (n = 8). *P < 0.05, **P < 0.05, vs. control. B) Comparison of sniffing activity between different groups in the open field test (n = 8). C) Comparison of grooming activity between different groups in the open field test (n = 8). *P < 0.05, **P < 0.01, ***P < 0.001, vs. control. D) Comparison of rearing activity between different groups in the open field test (n = 8). ***P < 0.001, vs. control. Abbreviations: DZP = diazepam, EA = ellagic acid, Veh = vehicle. Control (Veh), received a single dose of EA (3, 10, 30 and 100 mg/kg, ip), Diazepam (1, 3 and 5 mg/kg, i.p.). Data reported as mean ± SEM and analyzed using one-way ANOVA test followed by post Hoc Tukey’s test.

Diazepam at dose of 1 mg/kg significantly decreased grooming compared with the control group, but had no significant effect on other open field parameters. Diazepam at doses of 3 and 5 mg/kg significantly decreased ambulation, rearing and grooming compared with the control group, but sniffing had no significant difference with the control group (Figure 3 A-D).

4.2.2. Effect of Chronic Administration of Ellagic Acid (30 mg/kg/day, 10 Days, orally by Gavage) on Motor Activity in Open Field Test

EA was administered orally by gavages for 10 days and 30 minutes after the last dose the animals were placed in open field and ambulation, rearing, sniffing and grooming activities were recorded. Results showed that ambulation, rearing and grooming had no significant differences compared with the control group, but sniffing decreased significantly compared with the control group (P < 0.01) (Figure 4 A-D).

Figure 4.

A) Effect of 10 days of ellagic acid (30 mg/kg) administration on grooming activity in open field test (n = 8). B) Effect of 10 days ellagic acid (30 mg/kg) administration on rearing activity in open field test (n = 8). C) Effect of 10 days ellagic acid (30 mg/kg) administration on ambulation activity in open field test (n = 8). D) Effect of 10 days ellagic acid (30 mg/kg) administration on sniffing activity in open field test (n = 8). **P < 0.01. Abbreviations: EA = ellagic acid, Veh = vehicle. Data in all sections, A - D, reported as mean ± SEM and analyzed using one-way ANOVA test followed by post Hoc Tukey’s test.

5. Discussion

The aim of the present study was to evaluate the effect of different doses of EA (3, 10, 30 and 100 mg/kg) and chronic administration of EA (30 mg/kg) on anxiety and motor activity. The results demonstrated that EA at dose of 30 mg/kg had significant anxiolytic effect and at dose of 100 mg/kg had significant effect on motor activity in open field test. Co-administration of non-effective dose of EA (10 mg/kg) with non-effective dose of Diazepam (1 mg/kg) significantly decreased anxiety behavior in animals. This effect showed that EA and diazepam may exert their effects by a similar rout, as seen each of them alone had no effect on anxiety behavior of animals in EPM test. Co-administration of EA and Flumazenil significantly increased the number of entries in closed arm compared with the control group, which implies that EA exerts its anxiolytic effect via GABA A receptors, as Flumazenil is a GABA A receptor antagonist. Chronic administration of EA had no significant effect on anxiety and motor activity.

Flavonoids chemically are phenylbenzopyrones, generally conjugated with sugars and there are in all vascular plants. Numerous natural properties have been attributed to flavonoids. Amongst them antioxidant, anti-inflammatory, antihepatotoxic and antiviral activities are recognized, accompanied by vasculoprotective and spasmolytic effects. Flavonoids effects on the central nervous system have been measured only in the recent 10 years. Especially studies performed by Medina confirmed the ability of a number of flavonoids to attach the central type benzodiazepine (BZD) receptors (5).

GABAA receptor belongs to the ligand-gated ion channel superfamily. GABA is the most important inhibitory transmitter in the CNS. GABA binding to the GABAA receptor activates a chloride ion flux through the channel and BDZ-S ligands adjust the inhibitory effects of GABAA (20).

Several natural flavonoid compounds are found to be ligands for the γ-aminobutyric acid type A (GABAA) receptors in the central nervous system (CNS), which result in the theory that they act as benzodiazepine-like molecules (21, 22). These compounds have been shown to adjust GABA-generated chloride currents, either positively or negatively (21, 23).

Ellagic acid is a flavonoid compound that arises mainly as ellagitannins from plants such as raspberries, the stem and bark of eucalyptus species and nuts. This bioflavonoid has antioxidant, antifibrotic, anti-inflammatory, cardio-protective and anti-cancer properties (24). Girish et al. reported anti-depressant-like effect of ellagic acid, which is associated to its interaction with serotonergic and adrenergic system (25). Girish et al. assessed anxiolytic effect of ellagic acid. They used different doses from this study. Their results confirmed the present study. Nevertheless, they administered ellagic acid orally, in the present study ellagic acid injected intraperitoneally (4).

Footnotes

References

1.
Pollack MH. New advances in the management of anxiety disorders. Psychopharmacol Bull. 2002;36(4):79-94. [PubMed ID: 12858146].
2.
Shorter E, Tyrer P. Separation of anxiety and depressive disorders: blind alley in psychopharmacology and classification of disease. BMJ. 2003;327(7407):158-60. [PubMed ID: 12869462]. https://doi.org/10.1136/bmj.327.7407.158.
3.
Kunovac JL, Stahl SM. Future directions in anxiolytic pharmacotherapy. Psychiatr Clin North Am. 1995;18(4):895-909. [PubMed ID: 8748388].
4.
Girish C, Raj V, Arya J, Balakrishnan S. Involvement of the GABAergic system in the anxiolytic-like effect of the flavonoid ellagic acid in mice. Eur J Pharmacol. 2013;710(1-3):49-58. [PubMed ID: 23603526]. https://doi.org/10.1016/j.ejphar.2013.04.003.
5.
Medina JH, Peña C, Levi de Stein M, Wolfman C, Paladini AC. Benzodiazepine-like molecules, as well as other ligands for the brain benzodiazepine receptors, are relatively common constituents of plants. Biochem Biophys Res Commun. 1989;165(2):547-53. https://doi.org/10.1016/s0006-291x(89)80001-4.
6.
Priyadarsini KI, Khopde SM, Kumar SS, Mohan H. Free radical studies of ellagic acid, a natural phenolic antioxidant. J Agric Food Chem. 2002;50(7):2200-6. [PubMed ID: 11902978].
7.
Kaur S, Grover IS, Kumar S. Antimutagenic potential of ellagic acid isolated from Terminalia arjuna. Indian J Exp Biol. 1997;35(5):478-82. [PubMed ID: 9378517].
8.
Makena PS, Chung KT. Effects of various plant polyphenols on bladder carcinogen benzidine-induced mutagenicity. Food Chem Toxicol. 2007;45(10):1899-909. [PubMed ID: 17560706]. https://doi.org/10.1016/j.fct.2007.04.007.
9.
Cozzi R, Ricordy R, Bartolini F, Ramadori L, Perticone P, De Salvia R. Taurine and ellagic acid: two differently-acting natural antioxidants. Environ Mol Mutagen. 1995;26(3):248-54. [PubMed ID: 7588651].
10.
Rogerio AP, Fontanari C, Melo MC, Ambrosio SR, de Souza GE, Pereira PS, et al. Anti-inflammatory, analgesic and anti-oedematous effects of Lafoensia pacari extract and ellagic acid. J Pharm Pharmacol. 2006;58(9):1265-73. [PubMed ID: 16945186]. https://doi.org/10.1211/jpp.58.9.0014.
11.
Papoutsi Z, Kassi E, Chinou I, Halabalaki M, Skaltsounis LA, Moutsatsou P. Walnut extract (Juglans regia L.) and its component ellagic acid exhibit anti-inflammatory activity in human aorta endothelial cells and osteoblastic activity in the cell line KS483. Br J Nutr. 2008;99(4):715-22. [PubMed ID: 17916277]. https://doi.org/10.1017/S0007114507837421.
12.
Kim S, Gaber MW, Zawaski JA, Zhang F, Richardson M, Zhang XA, et al. The inhibition of glioma growth in vitro and in vivo by a chitosan/ellagic acid composite biomaterial. Biomaterials. 2009;30(27):4743-51. https://doi.org/10.1016/j.biomaterials.2009.05.010.
13.
Yang CS, Tzou BC, Liu YP, Tsai MJ, Shyue SK, Tzeng SF. Inhibition of cadmium-induced oxidative injury in rat primary astrocytes by the addition of antioxidants and the reduction of intracellular calcium. J Cell Biochem. 2008;103(3):825-34. https://doi.org/10.1002/jcb.21452.
14.
Bueno CH, Zangrossi Jr H, Viana MB. The inactivation of the basolateral nucleus of the rat amygdala has an anxiolytic effect in the elevated T-maze and light/dark transition tests. Brazil J Med Biol Res. 2005;38(11):1697-701. https://doi.org/10.1590/s0100-879x2005001100019.
15.
Carlo CN, Stefanacci L, Semendeferi K, Stevens CF. Comparative analyses of the neuron numbers and volumes of the amygdaloid complex in old and new world primates. J Comp Neurol. 2010;518(8):1176-98. [PubMed ID: 20148438]. https://doi.org/10.1002/cne.22264.
16.
Pellow S, Chopin P, File SE, Briley M. Validation of open : closed arm entries in an elevated plus-maze as a measure of anxiety in the rat. J Neurosci Methods. 1985;14(3):149-67. https://doi.org/10.1016/0165-0270(85)90031-7.
17.
Kõks S, Beljajev S, Koovit I, Abramov U, Bourin M, Vasar E. 8-OH-DPAT, but not deramciclane, antagonizes the anxiogenic-like action of paroxetine in an elevated plus-maze. Psychopharmacology. 2000;153(3):365-72. https://doi.org/10.1007/s002130000594.
18.
Archer J. Tests for emotionality in rats and mice: A review. Anim Behav. 1973;21(2):205-35. https://doi.org/10.1016/s0003-3472(73)80065-x.
19.
Galdino PM, Nascimento MV, Sampaio BL, Ferreira RN, Paula JR, Costa EA. Antidepressant-like effect of Lafoensia pacari A. St.-Hil. ethanolic extract and fractions in mice. J Ethnopharmacol. 2009;124(3):581-5. [PubMed ID: 19439172]. https://doi.org/10.1016/j.jep.2009.05.001.
20.
Wang Q, Han Y, Xue H. Ligands of the GABAA Receptor Benzodiazepine Binding Site. CNS Drug Rev. 2006;5(2):125-44. https://doi.org/10.1111/j.1527-3458.1999.tb00094.x.
21.
Marder M, Paladini AC. GABA(A)-receptor ligands of flavonoid structure. Curr Top Med Chem. 2002;2(8):853-67. [PubMed ID: 12171576].
22.
Fernandez SP, Wasowski C, Loscalzo LM, Granger RE, Johnston GA, Paladini AC, et al. Central nervous system depressant action of flavonoid glycosides. Eur J Pharmacol. 2006;539(3):168-76. [PubMed ID: 16698011]. https://doi.org/10.1016/j.ejphar.2006.04.004.
23.
Hall BJ, Chebib M, Hanrahan JR, Johnston GA. 6-Methylflavanone, a more efficacious positive allosteric modulator of gamma-aminobutyric acid (GABA) action at human recombinant alpha2beta2gamma2L than at alpha1beta2gamma2L and alpha1beta2 GABA(A) receptors expressed in Xenopus oocytes. Eur J Pharmacol. 2005;512(2-3):97-104. [PubMed ID: 15840393]. https://doi.org/10.1016/j.ejphar.2005.02.034.
24.
Girish C, Pradhan SC. Drug development for liver diseases: focus on picroliv, ellagic acid and curcumin. Fundam Clin Pharmacol. 2008;22(6):623-32. [PubMed ID: 19049667]. https://doi.org/10.1111/j.1472-8206.2008.00618.x.
25.
Girish C, Raj V, Arya J, Balakrishnan S. Evidence for the involvement of the monoaminergic system, but not the opioid system in the antidepressant-like activity of ellagic acid in mice. Eur J Pharmacol. 2012;682(1-3):118-25. [PubMed ID: 22387858]. https://doi.org/10.1016/j.ejphar.2012.02.034.

Import into EndNote Import into BibTex

Crossmark

Checking

Share on

Comments

Number of Comments:0

Cited by

Scopus by DOI: 0
Last Update: 3 days ago
Scopus by Title: 0
Last Update: 3 days ago
Scopus by Title (Ref): 1
Last Update: 3 days ago
CrossRef: 1
Last Update: 6 days ago

Metrics

Get Permission (article level)

Purchasing Reprints

Copyright Clearance Center (CCC) handles bulk orders for article reprints for Brieflands. To place an order for reprints, please click here ( https://www.copyright.com/landing/reprintsinquiryform/ ). Clicking this link will bring you to a CCC request form where you can provide the details of your order. Once complete, please click the ‘Submit Request’ button and CCC’s Reprints Services team will generate a quote for your review.

Search Relations

Author(s):

Yaghoob Farbood:[PubMed][Scholar]
Seyyed Mohammad Taghi Mansouri:[PubMed][Scholar]
Seyyed Mostafa Ahmadian:[PubMed][Scholar]
Seyyad Ali Mard:[PubMed][Scholar]
Alireza Sarkaki:[PubMed][Scholar]

Official Journal of Ahvaz Jundishapur University of Medical Sciences

Outlines

Effect of Ellagic Acid on Animal Behavior in Elevated Plus Maze and Open Field Tests

Abstract

Background:

Objectives:

Materials and Methods:

Results:

Conclusions:

1. Background

2. Objectives

3. Materials and Methods

3.1. Animals

3.2. Grouping of Samples

3.3. EPM Test

3.4. Open-Field Test

3.5. Statistical Analysis

4. Results

4.1. Elevated Plus Maze Test

4.1.1. Single-Dose Administration of Ellagic Acid in Doses of 3, 10, 30, 100 mg/kg and Diazepam in Doses of 1, 3, 5 mg/kg

4.1.2. Co-Administration of Diazepam (5 mg/kg) with Flumazenil (3 mg/kg) and Co-Administration of Effective Dose of Ellagic Acid (30 mg/kg) With Flumazenil (3 mg/kg).

4.1.3. Co-Administration of Ineffective Dose of Ellagic Acid (10 mg/kg) With Ineffective Dose of Diazepam (1 mg/kg) on EPM Test Parameters

4.1.4. Chronic (10 Days) Administration of Effective Dose of Ellagic Acid (30 mg/kg, i.p.) on EPM Test

4.2. Motor Activity in Open Field Test

4.2.1. Effect of Different Doses of Ellagic Acid (3, 10, 30 and 100 mg/kg) and Diazepam (1, 3 and 5 mg/kg) on Motor Activity in Open Field Test

4.2.2. Effect of Chronic Administration of Ellagic Acid (30 mg/kg/day, 10 Days, orally by Gavage) on Motor Activity in Open Field Test

5. Discussion

Footnotes

References

Crossmark

Checking

Last Update: 3 days ago

Last Update: 3 days ago

Last Update: 3 days ago

Last Update: 6 days ago