Physiology & Pharmacology
Sahar Heydari; Bahareh Amin; Akbar Pejhan; Seyed Jamal Mirmoosavi; Mohammad Mohammadzadeh
Volume 28, Issue 6 , January and February 2022, , Pages 911-922
Abstract
Background: Autism Spectrum Disorder (ASD) is a neurodevelopmental syndrome with two main symptoms: repetitive behavior and social interaction disorder. Camel milk, due to its antioxidant, immune-modulating, anti-inflammatory, and anti-apoptotic properties maybe have beneficial effects on ASD.Materials ...
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Background: Autism Spectrum Disorder (ASD) is a neurodevelopmental syndrome with two main symptoms: repetitive behavior and social interaction disorder. Camel milk, due to its antioxidant, immune-modulating, anti-inflammatory, and anti-apoptotic properties maybe have beneficial effects on ASD.Materials and Methods: Pregnant rats were injected intraperitoneally on day 12.5 of gestation with 500 mg/kg valproic acid. Then male neonatal rats were divided into five groups: Control group, valproic acid group, camel raw milk group + risperidone, and boiled camel milk group + risperidone. For the treatment period, rats have injected with risperidone (0.2 mg/kg) three times a week, and raw and boiled camel milk was given daily (10 ml/kg) for 42 days. Experiments of social interaction and repetitive behavior were measured at the beginning and end of the treatment period.Results: The offspring of mothers who received valproic acid had problems in social interactions, and sociability and social preference indexes were significantly reduced. Repetitive self-glooming behaviors also increased in VPA-rats. The treatment groups improved their social and repetitive behaviors after receiving camel milk and risperidone and were significantly different from the valproic acid and pre-treatment groups. Moreover, sociability and social preference indexes showed an increase after treatment with camel milk. Sociability index, social preference, social preference index, and repetitive behaviors before and after treatment between groups improved significantly (p <0.001) after treatment.Conclusion: Treatment with a camel milk diet improved the main behaviors of autism symptoms, such as social interactions and repetitive movements
Hasan Ajdari Mehri; Hossein Khademi; Elaheh Erami; Mohammad Mohammadzadeh
Volume 21, Issue 1 , March and April 2015, , Pages 106-115
Abstract
Abstract
Background: Several systems of pain modulation in the central nervous system modulated the responses to painful stimuli in stressful and excitement situations. Stimulation of the hypothalamus induces analgesia through information relay to the brain stem including Rostral- Ventromedial medulla. ...
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Abstract
Background: Several systems of pain modulation in the central nervous system modulated the responses to painful stimuli in stressful and excitement situations. Stimulation of the hypothalamus induces analgesia through information relay to the brain stem including Rostral- Ventromedial medulla. The Rostral-Ventromedial medulla as output gate of the brain stem medulated pain through neurons in the dorsal horn.
This pain modulation in central nerous system in various psychological conditions was based on existing of different neural groups and the special connections between them. These neurons cause pain modulation. The functional relationship between activation of one group of them and increasing pain and activation of another group and reduction of pain has been observed. In this review, it is discussed about the role of different neural groups of rostral-ventromedial medulla in pain modulation.
Conclusion: The Rostral-Ventromedial medulla has a major role in modulating pain and higher centers of the brain by altering the activity of the special groups of neurons cause to induce inhibition or facilitate pain in different stress and emotional conditions.
Seyed Mehdi Beheshti Nasr; Mohammad Mohammadzadeh; Hasan Ramshini
Volume 21, Issue 2 , May and June 2014, , Pages 352-361
Abstract
Introduction: Minocycline has anticonvulsant effects. Since some antiepileptic drugs increase the neurotransmitter GABA in the brain, the aim of this study is the effect of minocycline on gene expression of GABAA receptor in hippocampus and piriform brain areas on amygdale kindling acquisition in rat.
Methods: ...
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Introduction: Minocycline has anticonvulsant effects. Since some antiepileptic drugs increase the neurotransmitter GABA in the brain, the aim of this study is the effect of minocycline on gene expression of GABAA receptor in hippocampus and piriform brain areas on amygdale kindling acquisition in rat.
Methods: In this experimental study, three group (24 Wistar rats), after stereotaxic surgery and 1 week recovery period, received kindling stimulations(twice daily at 6 hours interval). Group 1(n=8) did not receive daily kindling stimulations. Group 2 (n=8) received intraperitoneal saline (1ml/kg) and Group 3 (n=8) received intraperitoeneal minocycline (25 mg/kg) 60 min before kindling stimulation and respectively. Two hours after the last stimulation, animals’ brains were removed and the changes of gene expression by γ2 subunit of GABAAreceptor in the hippocampus and piriform cortex were measured and compared with the control group. Data was analyzed using one-way ANOVA and Tukey post hoc tests (P
Ahamad Majid; Seyyed Mehdi Beheshti Nasr; Elham Izi; Mohammad Mohammadzadeh
Volume 20, Issue 2 , May and June 2013, , Pages 176-183
Abstract
Background: Cytisus scoparius is an ornamental and highly aromatic plant. The petals and stamens in aromatic plants are important allergenic agents. The aim of this study is examination study of allergenicity of petal and stamen in middle-aged ontogenical stage of Cytisus scoparius L. in guinea pig. ...
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Background: Cytisus scoparius is an ornamental and highly aromatic plant. The petals and stamens in aromatic plants are important allergenic agents. The aim of this study is examination study of allergenicity of petal and stamen in middle-aged ontogenical stage of Cytisus scoparius L. in guinea pig.
Methology: In this experimental study, 9 guinea pigs from hartly stirps were randomly selected and divided into three equal groups. Plant extracts were prepared with 16% concentration and injected intraperitoneally to guinea pigs.The first group was considered as negative control (injected with phosphate buffered saline). The second and the third groups received petal extract and petal + stamen extract respectively. In addition intraperitoneal injections within 4 weeks, once per week, subcutaneous injection was performed in the fifth week. Finally, a week after the last injection was taken blood sampling directly from the heart of animals, and the number of eosinophils, immunoglobulin E and blood sugar levels were measured in experimental groups and analyzed data.
Results: Skin test (Created wheal diameter) and serological tests (levels of immunoglobulin E, eosinophils, and blood glucose) in both groups treated with Cytisus scoparius L. significantly increased compared to controls. Electrophoretic profiles was observed about 4 protein bands (2 light protein bands and 2 pale protein bands) in the range of 27 to 85 kD in the middle-aged petal and about 6 more specific protein bands in the range of 10 to 75 kD in middle-aged petal whit stamen proteins.
Conclusion: The results showed that petal of ontogenical stage of middle-aged in Cytisus scoparius have allergenicity property and and this effect is exacerbated when they are together with stamens.
Mehdi Zarei; Mohammad Mohammad-Zadeh; Seyyed Mehdi Beheshti Nasr
Volume 19, Issue 3 , September and October 2012, , Pages 217-227
Abstract
Background: Low-frequency stimulation (LFS) (
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Background: Low-frequency stimulation (LFS) (
Ali Moghimi; Mohammad Mohammad-Zadeh; Seyyed Mehdi Beheshti Nasr
Volume 19, Issue 1 , March and April 2012, , Pages 14-25
Abstract
Background: Minocycline is an antibiotic and anti-inflammatory drug. In addition, its neuroprotective effects have been shown. Since there is interaction between cell death and seizure, the aim of this study is examination of the role of minocycline on amygdala-kindled seizures in rat.
Materials and ...
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Background: Minocycline is an antibiotic and anti-inflammatory drug. In addition, its neuroprotective effects have been shown. Since there is interaction between cell death and seizure, the aim of this study is examination of the role of minocycline on amygdala-kindled seizures in rat.
Materials and Methods: In this experimental study, three groups of animals (18 rats), after stereotaxic surgery and 1-week recovery period, received twice daily kindling stimulations. In fully kindled animals of groups 1-3, minocycline was injected intraperitoneally in doses 12.5 (n = 7), 25 (n = 5) and 50 (n = 6) mg/kg, respectively, 60 minutes before stimulation. Afterdischarge duration (ADD), stage 4 latency (S4L), Stage 5 Duration (S5D) and Seizure Duration (SD) were recorded and compared with related control groups (the same animals that had received saline 1 day before). A p-value of less than 0.05 was considered to represent a significant difference.
Results: In fully kindled animals who had received minocycline (50 and 25 mg/kg), ADD decreased significantly. When minocycline was delivered, S5D decreased 38.3% (p < 0.001), 34% (p
Akbar Pejhan; Seyyed Javad Mirnajafizadeh; Mohammad Mohammadzadeh; Arash Akaberi
Volume 18, Issue 4 , January and February 2012, , Pages 235-243
Abstract
Background and Purpose: Ethanol is known as anticonvulsant and proconvulsant but sometimes has no effect on seizure. There is no report about the role of ethanol on the anticonvulsant effect of Valproic acid (VPA). In this study، we explore the effect of ethanol on the anticonvulsant effect of VPA.
Methods ...
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Background and Purpose: Ethanol is known as anticonvulsant and proconvulsant but sometimes has no effect on seizure. There is no report about the role of ethanol on the anticonvulsant effect of Valproic acid (VPA). In this study، we explore the effect of ethanol on the anticonvulsant effect of VPA.
Methods and Materials: In this experimental study، eight groups of mice (25-30 gr) were injected pentylenetetrazol (PTZ) (37 mg/kg; ip) every other day (3 times a week). Groups receiving ethanol (0.5 and 1 g/kg; 7 and 21 continuous days; everyday; ip)، PTZ was injected 30 minutes after ethanol. In Valproic acid+ethanol، Valproic acid (100 mg/kg) was injected 5 minutes before ethanol (1 g/kg). Immediately after PTZ injection، seizure stages were recorded for 20 min. Seizure stage-4 duration (S4D)، seizure stage-4 latency (S4L) and seizure stage 1 latency (S1L) were recorded from each mouse after PTZ injection، and data were compared with control groups. The basis of all decisions was a significant level of P
Seyyed Javad Mirnajafizadeh; Mohammad Mohammadzadeh
Volume 15, Issue 3 , September and October 2008, , Pages 129-137
Abstract
Background and Purpose: Previous studies have not properly clarified the role of A2A adenosine receptors in convulsions induced by kindling. In the present study the role of these receptors in convulsions induced perforant path kindling has been investigated by blocking these receptors (with specific ...
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Background and Purpose: Previous studies have not properly clarified the role of A2A adenosine receptors in convulsions induced by kindling. In the present study the role of these receptors in convulsions induced perforant path kindling has been investigated by blocking these receptors (with specific antagonists). Methods and Materials: This experimental study was conducted on 24 rats which were randomly divided into four groups of six. They were kindled by electric stimulation of the perforant path. In two groups before each kindling stimulation antagonists of A2A adenosine receptors (ZM 241385) (500 and 200 µM) was injected to the lateral ventricle of the rats. Control animals were given only the electric stimulations. In the fourth group (sham) the solvent of the abovementioned drug was injected to the lateral ventricle before kindling stimulations. The obtained data were analyzed using two-way ANOVA and Tukey tests. Results: Injecting the antagonists of A2A adenosine receptors (ZM 241385) (500 µM) to the lateral ventricle of the rats postponed the process of kindling. Two-way ANOVA indicated that number of stimulations required to reach the convulsive stages were significantly increased (P