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Showing 5 results for Nouri

Mohammad Reza Nasirzadeh , Alireza Nourazar, Mir Hadi Khayat Nouri, Leila Roshangar,
Volume 12, Issue 1 (spring 2012)

  Background & Objectives: Following to estrogen depletion in postmenopausal womens, its cardioprotective effect decreases. Stroke usually occurs in women during the menopause years. Estrogen hormone therapy is still controversial. Epidemiological data suggest that phytoestrogens have a preventive effect on various estrogen-related diseases/symptoms such as menopausal symptoms, cardiovascular diseases. Some studies suggest that genistein as an important component of soy have cardioprotection effects but its role on inflammation and cardiomyocte injury remained to be elucidated. So, this study was goaled to investigate the cardioprotective effect of methanolic soy extract on heart tissue injures.

  Method: In this study 40 female rats were randomly allocated into 4 groups: 1) Control (intact animals), 2) sham surgery (without ovarictomy), 3) ovariectomized (ovx), and 4) treatment (ovx and soy gavage) group that received 60mg/kg per day soy extract in drinking water for 28days (4 weeks). At the end of experiments, the rat heart tissue was processed histologically and the sections were stained with hematoxylin and eosin to examine under light microscope. Statistical analysis was performed using the wilcoxon test.

  Results: The results showed that ovariectomy significantly increased inflammation and cardiomyocte injury and soy extract significantly promoted heart tissue recovery (p<0.05).

  Conclosions: This study indicated that oral administration of soy extract has a positive effect on attenuation of inflammation and myocyte injury in ovariectomized rat.

Mohammad Reza Asgharzadeh, Seyed Mohammad Atyabi, Hossein Khan Ahmad Shahrza, Somaye Asgharzadeh, Akbar Jalili, Reza Ahanghari Cohan, Davod Nouri Inanlo,
Volume 13, Issue 2 (summer 2013)

  Background & Objective: Gene therapy and administration of recombinant protein are common approach in treatment of genetic disorders. But many obstacles including frequent administration of desired gene, random integration into the host genome and low expression of protein encourage scientists to design an episome which remains in high copy number in eukaryotic cells and produces desired protein in suitable manner by viral proteins. The aim of this study is designing and construction of a plasmid containing mutated large T antigen of SV40 to develop a safe vector with high replication.

  Methods: Suitable mutant for creating large T antigen was analyzed by MODELLER software and finally appropriate structures were selected. Target mutation was created in the nucleotide sequence of large T antigen by PCR method. Mutated large T antigen gene was cloned in to the IRES2-EGFP. All clones were analyzed by PCR, restriction analysis and sequencing. HEK293 and CHO cell lines were transfected by final construct and transfected cells were observed by fluorescent microscope for 40 days. Plasmid and genomic DNA were extracted from remained cells and overlap PCRs performed on them to confirm their circularity.

  Result: This plasmid, containing a mutated large T antigen of SV40, can be replicated in eukaryotic cells and then can be used in gene therapy and recombinant protein production with high safety.

  Conclusion: The results of PCR, restriction analysis and sequencing confirm the authenticity of construct. The transfection of HEK293 and CHO cell lines showed replication of constructed plasmid in them.

Akbar Atadokht, Sajjad Basharpoor, Neda Rahimi, Elmira Nouri, Parviz Molavi,
Volume 14, Issue 4 (winter 2014)

  Background & objectives: Chronic psychiatric patients not only become inactive members of community but also the heavy costs of their maintenance and rehabilitation burden on society and their family. According to importance of subject, this study aimed to investigate the role of percieved social support in predicting positive and negative syndrome in patients with schizophrenia.

  Methods: In this descriptive-correlational study, 124 patients have been selected among patients with schizophrenia hospitalized in Issar Psychiatric Hospital and Rehabilitation Centers in first 3 mounths of 2014 in Ardabil, Iran and completed Positive and Negative Syndrome Scale (PANSS), Multidimensional Scale of Perceived Social Support (MSPSS) and a researcher made demographic checklist. Data were analyzed by Pearson correlation coefficient and multivariate regression analysis on SPSS-16 software and P values less than 0.05 were considered statistically significant.

  Results: The mean age of participants was 36.34±9.09 and their education level was mostly (58%) primary or illiterate. Results showed that there is a negative relationship between patients positive symptoms index and their family, some others and total social support (p<0.01) and also between negative symptoms index and patients friends, some others and total social support (p<0.05). Results of multivariate regression analysis showed that 11% of positive and negative symptom syndrome are explained by percieved social support in patients with schizophrenia (p<0.01).

  Conclusion: Percieved social support has relationship with positive and negative syndrome of patients with schizophrenia and measures to increase resources of social support and promotion of patients percieved social support can be used as an effective intervention by clinicians, patients and their family.

Roqiyeh Nouri, Mohammad Ahangarzadeh Rezaee , Alka Hasani, Mohammad Aghazadeh, Mohammad Asgharzadeh, Morteza Ghojazadeh,
Volume 16, Issue 2 (summer 2016)

Background & objectives: Fluoroquinolones have important role in treatment of P. aeruginosa infections. The main mechanism of fluoroquinolones resistance in P. aeruginosa is mutations in the quinolone-resistance-determining region (QRDR) of gyrA and parC genes. The aim of this study was to investigate the role of these mutations in ciprofloxacin resistance in different clinical isolates of P. aeruginosa.

Methods: A total of 75 clinical P. aeruginosa isolates were collected from different university-affiliated hospitals in Tabriz. Minimum inhibitory concentrations (MICs) of ciprofloxacin were evaluated by Etest assay. DNA sequences of the QRDR of gyrA and parC were determined by dideoxy chain termination method.

Results: From 75 isolates, 77.33% were resistant to ciprofloxacin. No amino acid changes were detected in gyrA or parC genes of the ciprofloxacin susceptible isolates. Thr-83→Ile substitution in gyrA was observed in all ciprofloxacin resistant isolates. About 90% of them had Ser-87→Leu substitution in parC. Geometric mean MICs of ciprofloxacin were different for various clinical isolates of P. aeruginosa which had the same situation in type and location of gyrA and parC mutations. Moreover, the geometric mean MIC in isolates from urine was significantly (p<0.05) higher than isolates from tracheal aspirates.

Conclusion: Mutations in gyrA and parC genes are the major mechanisms for ciprofloxacin resistance in clinical isolates of P. aeruginosa. Moreover, the role of different effective factors in fluoroquinolone resistance can be different in various clinical isolates of P. aeruginosa.

Hamdollah Panahpour, Mohammad Nouri, Mohammadghasem Golmohammadi, Nooshin Sadeghian ,
Volume 16, Issue 2 (summer 2016)

Background & objectives: Stroke is third leading cause of death and disability in the most of human communities. Several experimental studies have shown that combination therapy with drugs that act via different mechanisms can produce amplified protective effects. We examined the effects of combination therapy with candesartan and alpha tocopherol against cerebral ischemia.

Methods: Male Sprague-Dawley rats were divided into five groups (n=24): sham, control ischemic, candesartan treated (0.3 mg/kg), alpha tocopherol treated (30 mg/kg) and combined treated ischemic groups. Transient focal cerebral ischemia was induced by 90-min-long occlusion of the left middle cerebral artery followed by 24-h-long reperfusion. Neurological deficit score was evaluated at the end of the reperfusion period. Thereafter, the animals were randomly used for measurement of the infarct volumes and investigation of ischemic brain edema formation using a wet/dry method.

Results: Induction of cerebral ischemia produced considerable brain infarction in conjunction with severely impaired motor functions and edema formation. Combined treatment with candesartan and alpha tocopherol significantly reduced the infarct volume and lowered the water content in the ischemic lesioned hemisphere. These effects on brain edema and oxidative stress biomarkers were significantly more than the monotherapy with candesartan.

Conclusion: The combination therapy with candesartan and alpha tocopherol can noticeably decrease ischemic brain injury and attenuate edema formation likely via increasing the antioxidant activity.

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مجله دانشگاه علوم پزشکی اردبیل Journal of Ardabil University of Medical Sciences
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