Journal of Arak University of Medical Sciences

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Showing 4 results for Shakeri

The Relation Between Accessory Gene Regulator (Agr) Types of S.aureus and Some Phenotypic Criteria

Meysam Hasan Nejad Bibalan, Ezzatollah Ghaemi, Fateme Shakeri, Naeme Javid,
Volume 17, Issue 6 (9-2014)

Abstract

Background: Staphylococcus aureus is a gram-positive bacterium that has remained a persistent pathogen, causing infections such as endocarditis and toxic shock syndrome in humans. The accessory gene regulator (agr) system of Staphylococcus aureus is responsible for controlling the expression of many genes that code virulence factors and hemolysis.This study was carried out to determine the S.aureus agr group based on their source of isolation and any relation between agr speciﬁcity groups, pigmentation and hemolysis .

Materials and Methods: DNA of 194 S. aureus isolates were extracted by lysozym-phenol chloroform method, included 85clinical samples, 58 samples which isolated from nose of health care workers and 51 cases obtained from food product in Gorgan, North of Iran. PCR-based assays were used to evaluate agr locus nucleotide polymorphism for the identiﬁcation of agr specificity group. Pigmentation on nutrient agar medium and hemolysis on sheep Blood agar medium were assessed.

Results: The majority of isolates belonged to agr group I (43.3%), followed by agr group III (28.87%), agr group II (22.68%), and agr group IV (5.15%). The isolates belonged to agr group IV have greater ability to produce hemolysin (60%) whereas isolates belonged to agr group III have greater ability to produce pigment (60.5%).

Conclusion: agr group I was predominant among health care worker and food product specimens in Gorgan, North of Iran but in strains isolated from patient, agr group III was predominant. Investigation of the possible role of agr group III in Staphylococcus aureus infection in the next studies is recommended.

Investigating the Effect of Optimism Training during Pregnancy on Attitude and Mode of Delivery in Nulliparous Women Referred to Health Centers of Mashhad, 2014

Sedigheh Yousefzadeh, Mahin Esmaeili Darmian, Mohammad Reza Asadi Yoonesi, Mohammad Taghi Shakeri,
Volume 19, Issue 2 (5-2016)

Abstract

Background: Childbirth is a stressful event that requires a mental adjustment. Optimism is one of the important determinants of psychological adjustment which is a combination of interest and positive attitude. The purpose of this study was to determine the effect of optimism training during pregnancy on attitude and intentions to choose the mode of delivery in nulliparous women.

Materials and Methods: In this clinical trial , 64 primipar pregnant women with normal pregnancies, 34-30 weeks, without indication for cesarean section referring to the health centers in Mashhad in 2014 were selected and were randomly divided into two groups , A (trained) and B (no training). Optimism training during 5 session of the 60-minute, with the group participation of participants and active exercises was conducted. Data were analyzed with using the software SPSS and statistical tests including variance analysis, Fischer exact test, willcoxon, Square-Chi and paired t-test.

Results: Average attitude score towards c/s delivery in the study group, before and after training has a significant difference (p<0.001). Average attitude score towards natural childbirth was significantly higher in intervention group compared to the control group (p<0.002). Frequency of intentions to choose the mode of delivery in the study group, before and after training has a significant difference (p<0.033).

Conclusion: Reults showed that optimism training in creating a positive attitude towards natural childbirth and thus reducing the rate of elective c/s delivery is effective.

Effect of Chronic Aerobic/Resistive Exercises with Supplementation of Cinnamon on Insulin Resistance in Women with Polycystic Ovary Syndrome in Ahvaz City in 2017

Sahar Parseh, Saeid Shakerian, Ali Akbar Alizadeh,
Volume 22, Issue 1 (4-2019)

Abstract

Background and Aim: Polycystic Ovary Syndrome (PCOS) is one of the most common endocrine abnormalities that insulin resistance and obesity are among its main causes. The purpose of this study was to investigate the effect of chronic aerobic and resistive exercises along with supplementation of cinnamon on insulin resistance in women with polycystic ovary syndrome in Ahwaz in 2017.
Materials and Methods: In this semi-experimental study, 40 women with aged 18 to 30 years (BMI ≤24) were randomly divided into 4 groups. The intervention group performed 6 weeks, 3 sessions per week with intensity 50 to 75% of maximum heart rate for 50 to 85 minutes of exercise aerobic-resistance. Serum levels of insulin, glucose, and body composition indexes were evaluated. The t-test was correlated and ANCOVA was used.
Ethical Considerations: This study with research ethics code EE/ 96.24.3.77886/Scu.ac.ir has been approved by research ethics committee at Shahid Chamran University of Ahvaz, Iran.
Findings: Data analysis showed that body mass index, fat percentage and insulin resistance were decreased in exercise and supplementation exercises (p≤0.05). Cinnamon was also effective in combination with combined exercises in body composition and insulin resistance index (p≤0.05). Changes in fat free mass were not significant in any of the groups (p≤0.05).
Conclusion: It seems that this decrease in the difference in insulin resistance is more due to the combined exercise, and given the positive effect of cinnamon on reducing BMI, its use may be effective in the long term on insulin resistance.

Prediction of Changes in Temperature-Humidity Index in the Coming Decades According to the Climate Change Phenomenon based on Radiative Forcing Scenarios in a Dry Climate

Dr Mehdi Asghari, Dr Gholamabbas Fallah Ghalhari, Dr Marzieh Abbasinia, Dr Farbod Ebadifard Azar, Dr Fahimeh Shakeri, Dr Mohammad Javad Ghanadzade, Mr Gholam Heidar Teimori, Dr Sanaz Karpasand, Dr Hossein Safari,
Volume 26, Issue 3 (August & September 2023)

Abstract

Introduction: One of the biggest environmental challenges of the 21st century is the phenomenon of climate change and global warming, which can cause numerous health problems. One significant health issue associated with climate change is the increase in the prevalence of heat stress, particularly in occupational encounters in hot outdoor environments. So this study aimed to predict and model temperature and humidity indices in the coming decades in a dry climate.
Methods: This study obtained daily atmospheric parameters, including minimum temperature, maximum temperature, and relative humidity of Kerman station, representing a dry climate, for a period of 30 years (1965 to 2005) from the meteorological organization. Modeling of these parameters and calculation of the Temperature and Humidity Index (THI) were performed using the atmospheric general circulation model HadGEM2-ES and the CORDEX dynamic microscaler model. Three different radiative forcing scenarios, including optimistic (RCP 2.6), intermediate (RCP 4.5), and pessimistic (RCP 8.5), were considered for the coming decades (three 30-year periods from 2011 to 2099). The Ethics Committe of Iran University of Medical Sciences (IUMS) approved the present study (Code: IR.IUMS.REC.1400.020).
Results: The results of the study showed an increasing trend for minimum and maximum temperature parameters in all three time periods using the three scenarios considered. Moreover, the increase in temperature in the decades of 2099-2071 was more pronounced compared to the previous decades. The results also demonstrated an increasing trend in the THI index based on all three scenarios. The average results obtained using these scenarios showed an increase of 2.11, 2.53, and 3.3 degrees Celsius, respectively, in this index until the end of the last century compared to the base decades.
Conclusions: Overall, the increase in temperature and the investigated THI index in the studied station, based on all three scenarios, will lead to changes in thermal comfort. Higher levels of thermal discomfort will not only occur in hot months and seasons but also in other seasons. Therefore, proper planning should be implemented to address the adverse effects of climate change on people's health.

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