Background and Aim: In epileptic patients, behavioral disorders are the most important deficits therefore evaluation of deficits by animal model should be essential. The role of Zinc in behavioral disorder and its relation with hippocampus or serum zinc may help explain why some brain region is commonly facilitated while other did not harm. The main purpose of this study was to evaluate Zinc itself effect on changing behavioral disorder and control of brain seizure.
Materials and Methods: Type of this study is prospective, empirical and blind. The population was adult male Sprauge-Dawley rats and randomly assigned in six groups (n=8). Each group was treated two months before of inducing animal model of seizure by Zinc(248 mg/lit) or tap water and also in group 1 and 4 saline, group 2and 5 bicuculine(1mg/kg) and group 3 and 6 pentobarbital(10mg/kg) .epileptic model was induced by injection of Lithium chloride (127mg/kg)and 24 hr later ,pilocarpin(50 mg/kg) in to peritoneum. During this study, neurological deficits (behavior) was recorded at 1, and 2 hrs after sizuring.
Results: The results showed that Zn had a minus feature on neurological deficits. GABA A antagonists had the same effect as Zn on neurological deficits but GABA A agonists ameliorate it significantly. Serum zinc level didn&apost change significantly among the animals but hippocampus zinc was altered significantly in Zn treated animals compared with the controls.
Conclusion: This study shows that Zn deleterious effects on neurological deficits were carried out via GABAergic system.
Background: Attention Deficit Hyperactivity Disorder (ADHD) is a common psychiatric disorder among children and adolescents. This disorder causes difficulties in academic, behavioral, emotional, social and family performance. Stimulants show robust efficacy and a good safety profile in children with this disorder, but a significant percent of ADHD children do not respond adequately or cannot tolerate the associated adverse effects with stimulants. Such difficulties highlight the need for alternative safe and effective medications in the treatment of this disorder. This open-label study assessed the effectiveness of reboxetine, a selective norepinephrine reuptake inhibitor, in children and adolescents with attention deficit hyperactivity disorder (ADHD).
Methods: Fifteen child and adolescent outpatients, aged 7 to 16 (Mean± SD=9.72±2.71) years, diagnosed with ADHD were enrolled in a six open-label study with reboxetine 4-6 mg/d. The principal measure of the outcome was the teacher and parent Attention Deficit Hyperactive Disorder Rating Scale (ADHD Rating Scale). Patients were assessed by a child psychiatrist at baseline, 2, 4 and 6 weeks of the medication started. Side effects questionnaire was used to detect side effects of reboxetine. Repeated measures Analysis of variance (ANOVA) was done for comparison of Teacher and Parent ADHD Rating Scale scores during the intervention.
Results: Twelve of 15 (80%) participants completed the treatment protocol. A significant decrease in ADHD symptoms on teacher (p=0.04) and parent (p=0.003) ADHD rating scale was noted. Adverse effects were mild to moderate in severity. The most common adverse effects were drowsiness/sedation and appetite decrease.
Conclusion: The results of the current study suggest the effectiveness of reboxetine in the treatment of ADHD in children and adolescents. Double-blind, placebo-controlled studies and larger sample size with long duration of intervention are indicated to rigorously test the efficacy of reboxetine in ADHD. It is important that future studies complete our knowledge about safety and side effects of reboxetine.
Background: To evaluate the possibility that prolactin is involved in the pathogenesis and flare-up of systemic lupus erythematosus (SLE).
Methods: In this cross-sectional study we determined serum prolactin levels in sixty (60) serum samples from sixty patients diagnosed with SLE by the criteria of the American College of Rheumatology (ACR). All patients were females between 13-64 years of age. Disease activity was defined according to lupus activity criteria count and scored by Systemic Lupus Erythematosus Disease Activity Index (SLEDAI). Serum prolactin concentrations were determined by immunoradiometric assay (IRMA) [125I]. Patient blood samples were taken between 10 a.m. and 12 p.m. Serum was separated and kept frozen at -20 °C.
Results: Hyperprolactinemia (>21 ng/mL) was found in 7 (11.7%) patients. SLEDAI scores of <4 were considered inactive disease, >15 active disease and 4-15 moderate activity. Accordingly, 6.7% of our patients had active disease.
Normal serum prolactin levels range from 2 to 21ng/mL. Among those with active disease, prolactin levels were higher, with mean prolactin levels of 18.15, 15.11 and 11.5 ng/mL for active, moderate and nonactive groups, respectively. Increased prolactin levels correlated with activity of SLE disease (p=0.019, r=0.305). No correlation was found between tissue involvement and prolactin level (p=0.24) and no significant correlation was found between prolactin level and age (p=0.19).
Conclusion: Hyperprolactinemia, detected in patients with SLE by IRMA, was associated with disease activity. Our findings suggest that prolactin may play a role in the pathogenesis of SLE.
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Background: Amphibian
skins possess various antibacterial compounds that are effective against some
microbial pathogens and are mostly released in response to environmental
stress. In fact, the skin of Rana ridibunda, a large green frog, is a
rich source of antimicrobial compounds that can be developed for therapeutic
use. In the present study, the skin extract of Iranian Rana ridibunda was
evaluated for its antimicrobial, hemolytic and cytototoxic activities.
Methods : The frog specimens were collected from Minoodasht located in Golesten
province in Iran, during 2009. Subsequently, their skins were removed and the intended compounds
were extracted. The crude extract was partially purified by gel filtration
chromatography. The antimicrobial effects of skin extract were assessed against
various microorganisms such as Escherchia coli, methicillin-resistant
and -sensitive Staphyloccus aureus, vancomycin-resistant and -susceptible
Enteroccus fecalis, Pseudomonas aeroginosa and Candida albicans. In
addition, its minimum inhibition concentration, cytotoxic and hemolytic
activities were determined.
Results : The crude extract of Rana ridibunda skin had valuable
antimicrobial effects against methicillin-resistant and -susceptible S. aureus in comparison with E.coli and vancomycin-resistant
and -susceptible E. fecalis. Besides, no
antimicrobial activities were seen against P. aeroginosa or C. albicans. Moreover, the hemolytic and cytotoxic activities of the skin
extract were minimal.
Conclusion: The
antimicrobial activity of Iranian Rana ridibunda was comparable to those
isolated from other Rana species. In conclusion, the skin extract of Rana
ridibunda had the potential for a new therapeutic agent against the emerging
drug-resistant bacteria, particularly methicillin-resistant and -sensitive S.
aureus.
Background: Metformin has been suggested as anti-cancer in retrospective studies. We design a prospective controlled study about metformin efficacy in the window time between biopsy and definite surgery with changes of Ki-67 as the primary endpoint.
Methods: The primary cohort had composed of 50 pathologically diagnosed invasive breast cancers, accrued in Medical Oncology Department of Iran Cancer Institute from February to November 2014. Patients neither had indication of neoadjuvant chemotherapy, nor involved with diabetes mellitus. They followed during the time period of biopsy and definitive surgery with taking tests on pathology specimens for ER, PgR, HER-2/neu and Ki-67 index. We checked fasting insulin and glucose level as well as quality of life and adverse effects in both times in the intervention group. Metformin (1500 mg/day) was prescribed to intervention group from pathology report to the night before surgery.
Results: From 45 patients, 25 had been received metformin for median time of 2.8 weeks. Controlled group included 20 patients who followed in the window time. There were no statistically significant differences between two groups regarding baseline clinical and tumor characteristics such as age, stage, grade, ER, PgR, HER2 status, time and type of surgery. However, immunohistochemistry study showed decrease of median Ki-67 from 35.14 to 29.6% in the intervention group and increase from 24.5 to 30.6 in the control group. Both of these results were statistically significant. Patients tolerated metformin very well, but mild gastrointestinal symptoms were seen in 30% of cases. There was a correlation between metabolic factor of HOMA score (fasting insulin level fasting blood sugar/405) and changes in Ki-67.
Conclusion: In the present study metformin prescription in the short period of time between Biopsy and definite surgery had shown inhibition of breast cancer cell growth. We found relationship between metformin anti-proliferative effect and glucose and insulin metabolism. To find direct apoptotic stimulation of metformin and long-term results of this drug further studies in the adjuvant settings with cooperation of pharmacokinetic groups are recommended.
Background: Aloysia citrodora belongs to the Verbenaceae family of plants, a well-known herbal medicine in Iran. The aim of the present study was to investigate the chemical composition, antioxidant, antibacterial, cytotoxic and apoptotic effect of A. citrodora extract against human colon cancer (HT29) cells by using real-time polymerase chain reaction and flow-cytometry methods.
Methods: This experimental study was carried out in Islamic Azad University, East Tehran Branch, from March to September of 2014. At first, the A. citrodora chemical constituents were analyzed by gas chromatography-mass spectrometry (GC-MS) technique. In addition, antioxidant assay, antibacterial and anti-cancer effect was performed using 1,1-diphenyl-2-picrylhydrazyl (DPPH), disk diffusion and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) methods, respectively. The half maximal inhibitory concentration (IC50) value was calculated. We extracted total RNA molecules by using RNX solution, after which cDNA was synthesized. Finally, the pro-apoptotic (Bax) and anti-apoptotic (Bcl2) gene expression was performed by real-time polymerase chain reaction and apoptotic effects were analyzed using Flow-cytometry method.
Results: GC-MS analysis of Aloysia citrodora extract was shown 37 major components and the most frequent component was belonged to Spathulenol (17.57%) and Caryophyllene oxide (15.15%) The antioxidant activity of the extract was IC50= 0.6±0.03 mg/ml. The maximum and minimum antibacterial effects of extract were belonged to gram-negative and gram-positive bacteria, respectively. Cytotoxic results revealed that the A.citrodora extract have IC50= 20.1±0.78 mg/ml against colon cancer (HT29) cell line and real-time polymerase chain reaction results showed the expression level of Bax and Bcl2 was increased and decreased respectively in colon cancer cell line (3.470±0.72 (P< 0.05), 0.43±0.35 (P< 0.05)). In addition, the flow-cytometry results indicated the 38.66% apoptosis in colon cancer cell line.
Conclusion: According to the results, it seems that A. citrodora extract has potential antioxidant, antibacterial and anticancer effects and it suggested that further studies were performed for A. citrodora pharmaceutical importance.
Background: Attention-deficit/hyperactivity disorder (ADHD) is a common and mostly chronic mental health condition that affects children, adolescents, and adults. Stimulants and atomoxetine are first-line agents for the treatment of ADHD. Despite the impressive track record of stimulants in the treatment of ADHD, they fail in 25% of patients due to lack of efficacy or the emergence of unwanted side effects. Accordingly, this study carried out to compare efficacy and safety of duloxetine (a serotonin and norepinephrine reuptake inhibitor) and methylphenidate (a short acting stimulant) in the treatment of children with attention-deficit/hyperactivity disorder. Methods: Twenty-four children diagnosed with ADHD participated in this 6 weeks open clinical trial. Patients were between 6 to 11 years old that had been referred to psychiatry clinic at Akhavan and Rofide Medical and Rehabilitation Center in Tehran from September 2012 to July 2014. Diagnosis was made by two child psychiatrist according to DSM-IV TR criteria. Thirteen patients received duloxetine and others received methylphenidate. Conner’ parent rating scale-revised-short form (CPRS-RS) and ADHD-rating scale (ADHD-RS) were used at the beginning and then each two weeks to assess efficacy of treatment. Routine laboratory tests and electrocardiogram (ECG) was carried out in the beginning and end of the trial. Results: Twenty children with ADHD completed the study (Ten in methylphenidate and ten in duloxetine group). In both groups, scales of CPRS-RS and ADHD-RS were reduced from baseline to endpoint, but this reduction in methylphenidate group was significantly greater than duloxetine group (P= 0.000). The most common side effect was gastrointestinal problems in duloxetine group and anorexia in methylphenidate group. No serious side effects and no changes in laboratory and ECG indexes were seen in both groups. Conclusion: Duloxetine is not efficacious as well as methylphenidate in treatment of children with ADHD. Although more research are needed to achieve more accurate results. |
Background: Telomerase as an enzyme with reverse transcriptase activity has an essential role in telomere maintenance by adding a telomere repeat sequence to the 3' end of chromosome and is important for regulating of many processes in embryonic development including cell proliferation and differentiation. Human umbilical cord-derived mesenchymal stem cells (hUC-MSCs) with a self-renewal capacity are cells that can differentiate into various germ layer derivatives including neural cells and cardiomyocytes, and undergo biological changes during long-term cultivation. Hence, the passage number in which the cells expanded seems to be very important for proliferating and differentiating. This study was aimed at investigating the relationship between the telomerase activity and the growth rate of (hUC-MSCs) at different passages.
Methods: This experimental study was performed in Ardabil University of Medical Sciences, Iran, from March 2014 to December 2014. The umbilical cord samples were obtained from full-term neonate hospitalized in Alavi’s Hospital in Ardabil under sterile conditions. The umbilical vessels were clear off and the small pieces of the umbilical cord were cultured in Dulbecco's modified eagle's medium (DMEM) supplemented with 20% fetal bovine serum (FBS). Then, the hUC-MSCs were harvested from passage one to three to calculate the population doubling time (PDT) and extract proteins by using CHAPS lysis buffer. Finally, the telomerase activity of the cells at different passages was measured by telomeric repeat amplification protocol (TRAP) and qRT-TRAP assays.
Results: The hUC-MSCs population doubling time at passage from 1 to 3 were calculated as the average of 54.68±1.92, 55.03±1.71 and 69.41±2.54 hours, respectively, suggesting the higher cell passage number, the more extended PDT. The threshold cycles (CTs) for the telomerase activity also showed 30.58±0.51, 27.24±0.74 and 32.13±0.75 for the cell passage from one to three, respectively, representing the significant increasing in telomerase activity at passage two compared with the other passages (P= 0.021).
Conclusion: Analysis of the growth curve, PDT determination and measurement of telomerase activity of the human umbilical cord-derived mesenchymal stem cells showed that the long-term cell culture can affect on the cell proliferation and the telomerase activity.
Background: Attention deficit hyperactivity disorder (ADHD) is common in adults, and associated with comorbidities and negative consequences in many parents of children with ADHD. The aim of this study was to determine ADHD and personality disorder in parents of children with ADHD compared to the healthy group.
Methods: This cross-sectional descriptive and the analytic study were conducted in 2015 in Roozbeh Psychiatric Hospital Tehran and the sample group consisted of 45 adult subjects with ADHD children and 45 healthy adults who were chosen control method. questionnaires Conner’s adult attention deficit hyperactivity disorder questionnaires, Structured Clinical Interview for DSM-IV Axis II Disorders (SCID-II), Conner’s parent’s scales between the two groups were completed, and Strengths and Difficulties Questionnaire (SDQ) and Symptom Checklist -90- Revised (SCL-90-R) were completed in the group controlling. And for parents who had a score above the cutting point for the diagnostic assessment of personality disorder Structured Clinical Interview for DSM-IV Axis II Disorders, to assess personality disorders, as well as for the diagnostic assessment of ADHD in adults Diagnostic Interview for ADHD in Adults (DIVA) was conducted.
Results: The incidence of ADHD in parents of children with ADHD than parents with healthy children was 6/5 equivalent and the prevalence of B cluster disorders, C cluster disorders, passive-aggressive personality disorder and depressive personality disorder in parents of children with ADHD was higher than the cut-off point parents with healthy children (P˂0.01). The most common subtypes in parents of children with ADHD were respectively mixed (attention- hyperactivity) (38.5%) and attention deficit (30.8%). Conclusion: The prevalence of ADHD and personality disorders in parents of children with ADHD are more than parents with healthy. |
Background: Breast cancer is a malignant proliferation of epithelial cells that lining the ducts or lobules of the breast. It is the second common cancer, after lung cancer in women. Since growth inhibition is an important strategy in cancer treatment, many attempts are in program to find new apoptotic inducer agents. Today there is some reports about effect of metabolites of Pseudomonas on cancer cells, hence, metabolites of Pseudomonas sp. UW4, were isolated and anti-cancer and anti-microbial activity of these metabolites was studied. Methods: This experimental study was performed in cellular and developmental biology of Shahrekord Islamic Azad University from April 2015 to August 2015. Anti-microbial activity of metabolites of Pseudomonas sp. UW4 was tested against a pathogenic bacteria, including Escherichia coli, Bacillus cereus and Staphylococcus aureus. For anti-cancer activity, in this study SKBR3 cells and normal fibroblast cells (HU-02) were cultured in DMEM medium with 10% fetal bovine serum (FBS). The cells were treated by various concentrations of these metabolites 5, 10, 15 and 20 mg/ml for 24, 48 and 72 h. Cell viability was assessed by MTS assay. Cells were seeded at 5×103 cells/ml in 96 well plates and incubated for 24 hr. Then metabolites of bacteria were added, after indicated times MTS (20 µl) was added and the absorbance was measured at 492 nm using ELISA plate reader. Results: Pseudomonas sp. UW4 was able to produce antimicrobial metabolites against Staphylococcus aureus. Metabolites decreases the viability of SKBR3 cell line in a time and dose dependent manner, so that the most effective concentration of this substance was 20 mg/ml and 72 h after treatment (P< 0.01). While Pseudomonas sp. UW4 in various concentrations had no significant effect on normal fibroblast cells (P= 0.24). Conclusion: Bioactive compounds produced by of Pseudomonas sp. UW4 could be used for elimination of infections and treatment of breast cancer SK-BR3. |
Results: Cumulative kidney activity after calculation with four correcting background radiations techniques such as without correction of background radiation, conventional method, Buijs method, and Kojima method were 14.970±4.776, 13.544±4.357, 13.885±4.451, 13.879±4.449 mCi.min. respectively After comparing the calculated cumulative activity without correcting the background radiations with the cumulative activity calculated by the three techniques of correcting the background radiations such as the conventional method, Buijs method, and Kojima method, the value (P<0.05) was obtained in all cases, which shows that elimination of background radiations is significantly meaningful in the calculations of cumulative activity in the conjugate method for nuclear exams
Conclusion: after comparing correcting background radiations techniques to each other, it was determined that the conventional method technique considers the effect and weight of background radiations more than the two other techniques such as the Buijs method and Kojima method in cumulative activity calculations. |
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