1.Relationship Between Assertion and Aggression with Addiction Potential: A Cross-Sectional Study in 2019
Mohammad AMIRI ; Zakieh SADEGHI ; Elham SADEGHI ; Ahmad KHOSRAVI
Osong Public Health and Research Perspectives 2020;11(4):231-238
This study aimed to determine the relationship between assertion and aggression with addiction potential among students in Shahroud University of Medical Sciences. In this cross-sectional study conducted in 2019, 500 students of Shahroud University of Medical Sciences, were selected by multistage random sampling, for a study using the Addiction Potential Scale, and Assertion and Aggression Questionnaires. Data were analyzed using ANOVA, Chi-square, The mean scores of addiction potential, aggression, and assertion were 32.7 ± 17.2, 41.5 ± 12.9 and 139.4 ± 22.3, respectively. In this study, 38.8% ( Given the direct relationship between aggression and addiction potential, and since more than three-quarters of the students had moderate to high aggression, it is necessary to pay more attention to this issue. Interventions may play an important role in improving the current situation.
2.The potential application of platelet-rich fibrin (PRF) in vestibuloplasty
Mohammad AMIN AMIRI ; Nima FARSHIDFAR ; Shahram HAMEDANI
Maxillofacial Plastic and Reconstructive Surgery 2021;43(1):20-
no abstracr available.
3.Use of stem cells in bone regeneration in cleft palate patients:review and recommendations
Mohammad Amin AMIRI ; Fatemeh LAVAEE ; Hossein DANESTEH
Journal of the Korean Association of Oral and Maxillofacial Surgeons 2022;48(2):71-78
This study was conducted to review the efficacy of different sources of stem cells in bone regeneration of cleft palate patients. The majority of previous studies focused on the transplantation of bone marrow mesenchymal stem cells. However, other sources of stem cells have also gained considerable attention, and dental stem cells have shown especially favorable outcomes. Additionally, approaches that apply the co-culture and co-transplantation of stem cells have shown promising results. The use of different types of stem cells, based on their accessibility and efficacy in bone regeneration, is a promising method in cleft palate bone regeneration. In this regard, dental stem cells may be an ideal choice due to their efficacy and accessibility. In conclusion, stem cells, despite the lengthy procedures required for culture and preparation, are a suitable alternative to conventional bone grafting techniques.
4.Expression of neurotrophic factor genes by human adipose stem cells post-induction by deprenyl
Arezoo AMIRI ; Maryam Haji Ghasem KASHANI ; Mohammad Taghi GHORBANIAN
Anatomy & Cell Biology 2021;54(1):74-82
Human adipose stem cells (hASCs) were introduced as appropriate candidate due to advantages like ease of isolation, in vitro expansion and lack of immune response. Deprenyl (Dep) was used to induce bone marrow stem cells into neuron-like cells. We investigated the Dep effect on neurotrophin genes expression in hASCs and their differentiation into neuron-like cells. The cells were isolated from small pieces of abdominal adipose tissue and subjected to flow cytometry to confirm purification. The osteogenic and adipogenic differentiation were identified. The proliferation rate and neurotrophin genes expression of treated cells were evaluated by MTT, TH immunostaining and RT-PCR. hASCs had positive response to CD44, CD73, CD90, CD105 markers and negative response to CD34 and CD45 markers and differentiated into adipocytes and osteocytes. Exposure to 10–7 M of Dep for 24 hours caused a significant increase of viable cells and BDNF, NTF-3 genes expression as compared to cultured cells in serum free medium and had no effect on the expression of NGF and GDNF genes. Based on our results, Dep is able to induce BDNF, NTF-3 and NTF-4 genes expression and neroun-like morphology in hASCs.
5.The Relationship Between Health-Promoting Lifestyle and Its Related Factors with Self-Efficacy and Well-Being of Students
Mohammad AMIRI ; Reza CHAMAN ; Ahmad KHOSRAVI
Osong Public Health and Research Perspectives 2019;10(4):221-227
OBJECTIVES: Unhealthy lifestyles among young people are seriously related to incapacity and health problems in adulthood. The aim of this study was to determine the importance of a health-promoting lifestyle and its association with self-efficacy and well-being. METHODS: In this cross-sectional study, a sample of 500 students from Shahroud University of Medical Sciences (Shahroud, Iran) were randomly selected in 2017. The Persian versions of Health-Promoting Lifestyle Profile, Self-Efficacy Scale, and WHO-5 Well-Being Index were used. RESULTS: Among the participants, 34% of students had an abnormal imaginable well-being, and 68% of students had high self-efficacy. The mean score of a health-promoting lifestyle was 127.47 ± 19.78, which is interpreted as moderate, and the mean score of physical activity was 14.10 ± 4.95, which is poor. There was a significant relationship between well-being, and self-efficacy with health-promoting lifestyle. Age, gender, educational level, place of residence, student employment, self-efficacy, and well-being were associated with students’ lifestyles. CONCLUSION: A health-promoting lifestyle of students in this study was moderate and they did not have an acceptable level of physical activity. The direct effect of well-being, and self-efficacy on lifestyle, revising students’ curriculums to improve their health behaviors, and general health indicators, can all lead to the enhancement of health-promoting lifestyles.
Cross-Sectional Studies
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Curriculum
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Employment
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Health Behavior
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Humans
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Life Style
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Motor Activity
6.Expression of neurotrophic factor genes by human adipose stem cells post-induction by deprenyl
Arezoo AMIRI ; Maryam Haji Ghasem KASHANI ; Mohammad Taghi GHORBANIAN
Anatomy & Cell Biology 2021;54(1):74-82
Human adipose stem cells (hASCs) were introduced as appropriate candidate due to advantages like ease of isolation, in vitro expansion and lack of immune response. Deprenyl (Dep) was used to induce bone marrow stem cells into neuron-like cells. We investigated the Dep effect on neurotrophin genes expression in hASCs and their differentiation into neuron-like cells. The cells were isolated from small pieces of abdominal adipose tissue and subjected to flow cytometry to confirm purification. The osteogenic and adipogenic differentiation were identified. The proliferation rate and neurotrophin genes expression of treated cells were evaluated by MTT, TH immunostaining and RT-PCR. hASCs had positive response to CD44, CD73, CD90, CD105 markers and negative response to CD34 and CD45 markers and differentiated into adipocytes and osteocytes. Exposure to 10–7 M of Dep for 24 hours caused a significant increase of viable cells and BDNF, NTF-3 genes expression as compared to cultured cells in serum free medium and had no effect on the expression of NGF and GDNF genes. Based on our results, Dep is able to induce BDNF, NTF-3 and NTF-4 genes expression and neroun-like morphology in hASCs.
7.Macular Thickness in Moderate to Severe Amblyopia.
Zhale RAJAVI ; Hamideh SABBAGHI ; Narges BEHRADFAR ; Mehdi YASERI ; Mohammad AGHAZADEH AMIRI ; Mohammad FAGHIHI
Korean Journal of Ophthalmology 2018;32(4):312-318
PURPOSE: To compare the macular retinal thickness of moderately to severely amblyopic eyes with non-amblyopic eyes as controls. METHODS: This case control study was conducted on 56 children aged 4 to 10 years old (64.3% female subjects). Twenty-eight children had unilateral amblyopia (28 amblyopic eyes as cases and 28 normal fellow eyes as internal controls) and 28 children had normal visual acuity in both eyes and were considered as external controls (n = 56 eyes). Among our cases, 14 had strabismic amblyopia and 14 had anisometropic amblyopia. Macular retinal thickness was measured using optical coherence tomography at the center and in 1-, 3-, and 6-mm rings. RESULTS: Best-corrected visual acuity of the amblyopic eyes was less than that of the internal and external controls, and the best-corrected visual acuity of their fellow eyes was also less than that of the external controls. Thickness of the central macula and a 1-mm ring area in the amblyopic eyes was higher than that of both internal and external controls. Difference of central macular thickness ≥20 µm between two eyes of the amblyopic children was significantly more than non-amblyopic subjects. CONCLUSIONS: Based on the results of this study, the macular retinal thickness was significantly higher in moderate to severe amblyopic eyes compared to their fellow eyes and external controls. This might be due to macular developmental disorders in amblyopic eyes. Therefore, optical coherence tomography imaging is recommended if subtle macular abnormalities are suspected in moderate to severe amblyopic eyes.
Amblyopia*
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Case-Control Studies
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Child
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Female
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Humans
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Retinaldehyde
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Tomography, Optical Coherence
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Visual Acuity
8.Study of the Relationship Between Self-Efficacy, General Health and Burnout Among Iranian Health Workers
Mohammad AMIRI ; Hassan VAHEDI ; Seyed Reza MIRHOSEINI ; Ahmad Reza EGHTESADI ; Ahmad KHOSRAVI
Osong Public Health and Research Perspectives 2019;10(6):359-367
OBJECTIVES: To evaluate the relationship between self-efficacy, general health and burnout of the staff at Shahroud University of Medical Sciences.METHODS: In 2015, 249 staff at Shahroud University of Medical Sciences (from a total reference population of 520 staff members) were selected through stratified random sampling. To collect the data, Sherer self-efficacy Scale, General Health Questionnaire and Maslach Burnout Inventory were used. The collected data were analyzed through ANOVA, Pearson correlation and Chi-square tests using SPSS 16. The relationship between self-efficacy, general health and burnout (latent factors) were studied using structural equation modeling with Stata 14.RESULTS: The mean age of participants was 36.97 ± 7.60 years, and the mean number of years work experience was 12.29 ± 7.57. The mean scores of general health, self-efficacy and burnout were 28.24 ± 11.14, 62.30 ± 9.21 and 81.67 ± 22.18, respectively. The results of the study showed a statistically significant relationship between self-efficacy and general health which equals −0.32. A statistically significant relationship also existed between burnout scores and general health scores (beta = 0.78).CONCLUSION: The results showed that high self-efficacy improves the general health of employees at the Shahroud University of Medical Sciences and reduces burnout. Special attention should be paid to self-efficacy in the prevention of burnout.
Self Efficacy
9.Exploring the underlying factors of COVID-19 vaccination hesitancy in Ahvaz, Iran: a comprehensive cross-sectional study
Poorandokht AFSHARI ; Seyed Mohammad ALAVI ; Parvin ABEDI ; Maryam BEHESHTINASAB ; Shohreh DASHTPAYMA ; Homayon AMIRI
Clinical and Experimental Vaccine Research 2023;12(2):127-133
Purpose:
Around 70% of the Iranian population had received two doses of coronavirus disease 2019 (COVID-19) vaccines by the end of 2021. In this study, we evaluated the reasons for vaccination refusal among people in Ahvaz, Iran.
Materials and Methods:
In this cross-sectional study, 800 participants (400 vaccinated and 400 unvaccinated) were recruited. A demographic questionnaire was completed through interviews. The unvaccinated participants were asked about the reasons for their refusal. The Shapiro-Wilk test, independent t-test, chi-square test, and logistic regression were used for analyzing data.
Results:
Older people were 1.018 times more likely to refrain from vaccination (95% confidence interval [CI], 1.001–1.039; p=043). People who were manual workers as well as those who were unemployed/housewives were 0.288 and 0.423 times less likely to receive vaccination, respectively. Those with high school education and married women were 0.319 and 0.280 times less likely to receive vaccination, respectively (95% CI, 198–0.515; p<0.001; 95% CI, 0.186–0.422; p<0.001). Participants who had hypertension or suffered from neurological disorders were more likely to receive the vaccination. Finally, people affected with severe COVID-19 infection were 3.157 times more likely to get vaccinated (95% CI, 1.672–5.961; p<0.001).
Conclusion
The results of this study showed that lower level of education and older age were contributed to reluctance for vaccination, while having chronic diseases or being already infected with severe COVID-19 infection were associated with more acceptance of vaccination.
10.Prediction of Serum Creatinine in Hemodialysis Patients Using a Kernel Approach for Longitudinal Data
Mohammad Moqaddasi AMIRI ; Leili TAPAK ; Javad FARADMAL ; Javad HOSSEINI ; Ghodratollah ROSHANAEI
Healthcare Informatics Research 2020;26(2):112-118
Longitudinal data are prevalent in clinical research; due to their correlated nature, special analysis must be used for this type of data. Creatinine is an important marker in predicting end-stage renal disease, and it is recorded longitudinally. This study compared the prediction performance of linear regression (LR), linear mixed-effects model (LMM), least-squares support vector regression (LS-SVR), and mixed-effects least-squares support vector regression (MLS-SVR) methods to predict serum creatinine as a longitudinal outcome. We used a longitudinal dataset of hemodialysis patients in Hamadan city between 2013 and 2016. To evaluate the performance of the methods in serum creatinine prediction, the data was divided into two sets of training and testing samples. Then LR, LMM, LS-SVR, and MLS-SVR were fitted. The prediction performance was assessed and compared in terms of mean squared error (MSE), mean absolute error (MAE), mean absolute prediction error (MAPE), and determination coefficient ( The MLS-SVR outperformed the other methods in terms of the least prediction error; MSE = 1.280, MAE = 0.833, and MAPE = 0.129 for the training set and MSE = 3.275, MAE = 1.319, and MAPE = 0.159 for the testing set. Also, the MLS-SVR had the highest The MLS-SVR achieved the best serum creatinine prediction performance in comparison to LR, LMM, and LS-SVR.