جستجوی مقالات مرتبط با کلیدواژه « سیپروهپتادین » در نشریات گروه « پزشکی »

Hippocampus is full of corticosteroid and serotonergic receptors, and have an important role in memory and spatial perception. In this study, the effects of fluoxetine and cyproheptadine, were investigated on learning and orientation memory in rats.
In this study, 30 male adult rats, were divided into 5 groups, including control, under immobilization stress, treatment with fluoxetine, treatment with cyproheptadine and treatment with fluoxetine猪殢ឩ떧抝. Immobilization stress was applied by limiting polyethylene. Fluoxetine 20 and cyproheptadine (4 mg/kg bw, were injected intraperitoneally for 2 weeks. At the end of the tretment period, learning and orientation memory, were evaluated using radial arm maze and cross-maze tests. After finishing behavioral tests, serum levels of corticosterone and malondialdehyde (MDA), were measured in hippocampus tissue.
In this study, immobilization stress increased the time to find food and decreased frequency percentage compared to the control group. Administration of fluoxetine significantly increased the time to find food and significantly reduced frequency percentage compared to control and patient groups. Co-administration of cyproheptadine and fluoxetine prevented the effects of this drug. Also, in the stressed animals, MDA level increased compared to the control group, but corticosterone level decreased. While, administration of fluoxetine or cyproheptadine increased corticosterone level and decreased MDA level compared to the patient group.
The results of this study showed that immobilization stress resulted in impaired learning and orientation memory, decreased corticosterone, and increased MDA. Considering the inhibitory effects of cyproheptadine on the function of fluoxetine in impairment of learning and orientation memory, this drug probably exerts its effects through the serotonergic system.

Anxiety disorders are among major problems for humanity, often due to imbalance in the activity of brain monoaminergic systems. clinical evidence indicates the possible disorder of Serotonergic neurons in the pathophysiology of anxiety, therefore, in the present study, Fluoxetine and Cyproheptadine drugs were used as modifiers of serotonin levels in the brain, to evaluate the role of Serotonergic system in the development or alleviation of anxiety- like disorders.
This study aims to investigate the role of serotonergic system in anxiety- like behavior changes and thyroid hormones metabolic changes in male rats under immobilization stress.
30 male adult wistar rats, weighing 180±20 g, were randomly divided into five groups of 6. immobilization stress was induced in the rats by limiting polyethylene, and anxiolytic evaluation of the effects of drugs in the treated groups was performed using the elevated plus-maze test. In this study, fluoxetine with concentration of 20 mg/kg and cyproheptadine with concentration of 4 mg/kg were intraperitoneally administered to the animals. at the end of the treatment period, effects of drugs on anxiety like behavior of immobilization stress-induced and thyroid hormones serum levels were measured using an ELISA kit. The data were analyzed at a significance level of p The results of the plus-maze test showed that the percentage of time spent in the open arms in the stress group was significantly decreased, compared with the control group (p The results indicate the improving effects of serotonergic system in the control of anxiety- like behavior and thyroid hormones secretion

stress changes the behaviors due to variation in the central neurotransmitters, especially serotonin. Since, imipramine including effective drugs on brain serotonergic system, this study was aimed to evaluation the role of serotonergic system in behavior response to stress and depression.

This study was conducted on 30 male rats in Institute. Animals were randomly divided into five groups: controls, under immobilization stress, the Imipramine-treated (30mg/kg) group, the Cyproheptadine-treated (4mg/kg) group and the Imipramineପ殢ឩ떧抝treated group. Immobilization stress was induced in rats by limiting. At the end of treatment, the tail suspension test was used to assess the depression-like behavior, lipid peroxidation and catalase activity in the treated groups were studied.

Immobilization stresses were significantly increased immobility time and lipid peroxidation, reduced catalase activity compared to the control groups. Administration of imipramine or cyproheptadine alone was more effective in reducing the immobility time compared to the coadministration of these drugs. Administrations of imipramine or cyproheptadine were non-significantly reduced lipid peroxidation. While administrations of imipramine were significantly increased catalase activity compared to the cyproheptadine groups. Administrations of imipramine or cyproheptadine drugs alone were more effective in reducing oxidative stress factors.

Immobilization stress caused like-depression behavior with the induction oxidative damage, but administration of imipramine or cyproheptadine to improve stress-induced like-depression behavior. According to these drugs, including drugs that affect the serotonergic system, thought to be, these drugs is exert their effects through the serotonergic receptors.

Cocaine by effect on central nervous system inhibits reuptake of monoamines (serotonin، norepinephrine and dopamine) to presynaptic terminal and increases their concentration. Monoamines such as serotonin cause analgesia at the spinal level. This study investigates the effects of systemic and spinal administration of cocaine on pain sensation and the relation between these effects and serotonin. Male Wistar rats (200-250g) were set in groups: saline (i. p)، saline/DMSO (i. p)، cocaine 25mg/kg (i. p)، saline (i. t.)، saline/DMSO (i. t.)، cocaine 100µg/10µl (i. t.)، cyproheptadine 33µg/10µl (i. t.) and cyproheptadine 33µg/10µl/cocaine 100µg/10µl (i. t.). Tail flick latency was measured before and after administration. Intraplantar formalin was used for induction of chemical pain. The data was analyzed by T-Test and ANOVA. Pain in both phases of formalin test was reduced in both cocaine 25mg/kg (i. p) (P<0. 01) and cocaine 100µg/10µl (i. t.) (P<0. 01). However، in cyproheptadine 33µg/10µl (i. t.)، was increased in the first phase (P<0. 01). In cyproheptadine 33µg/10µl/cocaine 100µg/10µl (i. t.)، the part of pain reduction induced by cocaine was reversed، in both phases (P<0. 01). In tail flick test the results of cyproheptadine 33µg/10µl (i. t.) showed reduced tail flick latency (P<0. 001). Inhibition of serotonin reuptake at the spinal level plays role in analgesic effects of cocaine probably، because release of serotonin from the spinal serotonergic terminals causes inhibition of pain neurons and reduction of pain. In addition، inhibition of spinal serotonin receptors by cyproheptadine reduced part of analgesic effects of cocaine probably.

Cocaine is a central nervous system stimulant and is an inhibitor of monoamine (serotonin, norepinephrine and dopamine) reuptake; so increases their concentration in central nervous system. Monoamines such as serotonin and nor epinephrine have a role in anti-inflammatory effects and in modulating of immune system. The aim of this study was to investigate the effect of systemic and spinal administration of cocaine (none selective inhibitor of monoamine reuptake) on inflammatory paw edema and the role of serotonin neurotransmitter in these effects at the spinal level.

56 Male Wistar rats (200-250 g) were set in 8 groups: Intraperitoneal Saline, Intraperitoneal Saline/Dimethyl sulfoxide (DMSO), Intraperitoneal Cocaine 25 mg/kg, Intrathecal Saline, Intrathecal Saline/DMSO, Intrathecal Cocaine 100 µg/10 µl, Intrathecal Cyproheptadine 33 µg/10 µl and Intrathecal Cyproheptadine 33 µg/10 µl/Cocaine 100 µg/10 µl. Inflammation was induced by subplantar injection of formalin.

Anti-inflammatory effects of cocaine was significant in intraperitoneal cocaine 25 mg/kg (P < 0.001) and intrathecal cocaine 100 µg/10 µl (P < 0.001) groups. In intrathecal cyproheptadine 33 µg/10 µl group, there was no influence on inflammation. In intrathecal cyproheptadine 33 µg/10 µl/cocaine 100 µg/10 µl, cyproheptadine decreased a part of anti-inflammatory effect of cocaine (P < 0.001).

Serotonergic terminals coming from higher center to the spinal cord interacts with spinal neurons such as primary afferent C fibers. Probably, the inhibition of primary afferent fibers by serotonin inhibits release of inflammatory agent from these fibers and causes anti-inflammatory effects. It is likely that inhibition of serotonin receptor at the spinal level by intrathecal administration of cyproheptadine has reduced anti-inflammatory effects of cocaine.

The core symptoms of autism are abnormalities in social interaction, communication, and behavior. The involvement of 5-HT has been suggested in neuropsychiatric disorders and particularly in autistic disorder.The aim of this study was to assess the efficacy of cyproheptadine, a 5-HT2 antagonist, in the treatment of autistic disorder. In this double-blind, placebo-controlled trial, we assessed the effects of cyproheptadine plus risperidone in the treatment of autistic disorder.Thirty children between the ages of 3 and 11 years (inclusive) with a DSM-IV-TR clinical diagnosis of autism referred to the child psychiatry clinics at Sheikh and Ebn-e Sina hospitals, Mashhad, were recruited. The children presented with severely disruptive symptoms related to autistic disorder. Patients were randomly allocated to cyproheptadine + risperidone (Group A; 15 patients) and risperidone + placebo (Group B; 15 patients) for an 8-week, double-blind, placebo-controlled study. The doses of risperidone and cyproheptadine were titrated up to 2 mg/day and 0.2 mg/kg/day, respectively. Patients were assessed at baseline and after 4 and 8 weeks of starting medications. The Childhood Autism Rating Scale scores after 4 and 8 weeks were 40.26±2.9 and 38.56±2.38 in group A and 40.2±3.31 and 37.73±2.59 in group B, respectively. The scores improved in both groups, but the difference between them was not significant (F=0.029, d.f= 1, p=0.867). The results suggest that the combination of cyproheptadine with risperidone is not more effective than risperidone alone. However, the results need confirmation by a larger randomized controlled trial.

Recent studies have shown the role of serotonergic system in posttraumatic stress disorder (PTSD). Terazodone and nefazodone (5HT2 receptor antagonists) ameliorated PTSD nightmares but the reports are mixed. This study prompted an open trial of cyproheptadine for Iran versus Iraq combat PTSD patient nightmares. 25 patients studied in an eight-week, before-after trial of cyproheptadine. The participants were male and chronic PTSD patients with combat related nightmare. The exclusion criteria included current substance abuse or dependence, psychotic disorders and any medical condition that contraindicated the use of cyproheptadine. Five patients were excluded from the study because of side effects including dizziness and somnolence. Twenty patients completed the study. Average of nightmare severity decreased from 6.85 to 5.05, which was statistically significant (P<0.01) The data suggest that cyproheptadine, as a 5HT2 antagonist, may be effective in treament of PTSD nightmare.

Coronary artery disease is one of the most common problems in medicine. The correct diagnosis of the affected artery and its treatment can prevent further development of atherosclerosis. Coronary angiography is the gold diagnostic standard of coronary atherosclerosis disease, but causes some dangers for the patients, such as adverse reaction to contrast agent media. Vomiting and nausea are the most common problems during angiography that increase the length of angiography and cause unstrile condition. Nausea and vomiting are related to the serotonin receptors in the brain. The purpose of this study was to investigate the effect of cyproheptadine (a serotonin blocker) on vomiting and nausea during angiography and ventriculography. In this study, 400 patients were divided into two equal groups. One group received a placebo and the other received 8 mg of cyproheptadine one hour before the angiography. The patients were visited during 12 hours after the angiography and a questionnaire was filled. The data was analyzed using c² and t tests by SPSS. Minor adverse reaction rate, which was 78 cases, reduced to 27 cases by using cyproheptadine tablet. In the patient, who received placebo the rate of nausea was 27%, vomiting 5.5% and retching 3%. But in those who received cyproheptadine the rate of nausea was 8%, vomiting 2% and retching 1%. The adverse reactions were not correlated to sex, ejection fraction and coronary artery obstruction. Cyproheptadine had an important role in decreasing nausea and vomiting during angiography.