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Abadian K, Keshavarz Z, Milani H, Hamdieh M, Nasiri M. Experiences of married working women about the effects of work on the sexual life: A qualitative study. Sexologies 2021. [DOI: 10.1016/j.sexol.2021.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Amini-Tehrani M, Nasiri M, Jalali T, Sadeghi R, Ghotbi A, Zamanian H. Corrigendum to "Validation and psychometric properties of Suicide Behaviors Questionnaire-Revised (SBQ-R) in Iran" [Asian J. Psychiatry 47 (2020) 101856]. Asian J Psychiatr 2021; 55:102255. [PMID: 32616387 DOI: 10.1016/j.ajp.2020.102255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M Amini-Tehrani
- Department of Psychology and Education, University of Tehran, Tehran, Iran; Health Psychology and Behavior Medicine Research Group, Student Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - M Nasiri
- Department of Psychology and Education, University of Tehran, Tehran, Iran
| | - T Jalali
- Health Psychology and Behavior Medicine Research Group, Student Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - R Sadeghi
- Health Psychology and Behavior Medicine Research Group, Student Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - A Ghotbi
- Health Psychology and Behavior Medicine Research Group, Student Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - H Zamanian
- Health Psychology and Behavior Medicine Research Group, Student Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran; Qom University of Medical Sciences, Qom, Iran.
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Mousavi S, Amini S, Mirsaeidi M, Dabiri H, Hamzehloo G, Goudarzi H, Nasiri M. Genotyping and drug susceptibility testing of Mycobacterium tuberculosis in Iran: a multi-centre study. New Microbes New Infect 2020; 37:100729. [PMID: 32774869 PMCID: PMC7404542 DOI: 10.1016/j.nmni.2020.100729] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 02/24/2020] [Accepted: 07/09/2020] [Indexed: 01/20/2023] Open
Abstract
Tuberculosis (TB) is a deadly infection and caused 1.4 million deaths in 2018. Assessing the geographic distribution of major lineages of Mycobacterium tuberculosis can contribute greatly to TB control. Mycobacterial interspersed repetitive unit variable number tandem repeat (MIRU-VNTR) typing is commonly used to differentiate various lineages of M. tuberculosis. A total of 2747 clinical specimens were collected consecutively from October 2018 through June 2019. Clinical isolates were identified as M. tuberculosis using standard biochemical tests. The standard 15-locus MIRU-VNTR typing was used for the genotyping of clinical isolates. Drug susceptibility testing was performed using the conventional proportion method. From the collected specimens, 100 were culture positive for M. tuberculosis. Using MIRU-VNTR, 99 different patterns were detected among the 100 isolates. They were distributed in one cluster comprising two strains and 98 unique patterns. Most of our isolates were similar to New-1 and Delhi/CAS strains. Of the M. tuberculosis isolates, 83 (83.0%) were pan-susceptible and 17 (17.0%) were resistant to at least one drug. Our study showed that MIRU-VNTR is a useful method for studying the genetic diversity of M. tuberculosis isolates in different regional settings and will help the health authorities to construct a preventive programme for TB.
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Affiliation(s)
- S.M.J. Mousavi
- Department of Microbiology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - S. Amini
- Regional Tuberculosis Reference Laboratory, Tehran University of Medical Science, Tehran, Iran
| | - M. Mirsaeidi
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Miami, Miller School of Medicine, Miami, FL, USA
| | - H. Dabiri
- Department of Microbiology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - G. Hamzehloo
- Regional Tuberculosis Reference Laboratory, Tehran University of Medical Science, Tehran, Iran
| | - H. Goudarzi
- Department of Microbiology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - M.J. Nasiri
- Department of Microbiology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Arefzadeh S, Azimi T, Nasiri M, Nikpor Z, Dabiri H, Doustdar F, Goudarzi H, Allahyartorkaman M. High-resolution melt curve analysis for rapid detection of rifampicin resistance in Mycobacterium tuberculosis: a single-centre study in Iran. New Microbes New Infect 2020; 35:100665. [PMID: 32257224 PMCID: PMC7125345 DOI: 10.1016/j.nmni.2020.100665] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 03/05/2020] [Indexed: 11/29/2022] Open
Abstract
This study aimed to compare the diagnostic accuracy of high-resolution melting (HRM) analysis in comparison with Xpert MTB/RIF as well as conventional drug susceptibility testing (DST) for the detection of rifampicin (RIF) resistance in Mycobacterium tuberculosis in Iran. A comparative cross-sectional study was carried out from April 2017 to September 2018. A total of 80 culture-positive clinical samples selected during the study period were analysed for detection of RIF-resistant TB by conventional DST, Xpert MTB/RIF, and sequencing. Sensitivity and specificity of the HRM calculated according to DST was our reference standard test in this study. The overall sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of HRM assay were found to be 100%, 89.33%, 38.46%, and 100% respectively. The analysis demonstrated that the diagnostic accuracy of HRM tests is insufficient to replace Xpert MTB/RIF and conventional DST. HRM tests have the advantage of time to result and may be used in combination with culture. Further work to improve molecular tests would benefit from standardized reference standards and the methodology.
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Affiliation(s)
- S. Arefzadeh
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - T. Azimi
- Department of Pathobiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - M.J. Nasiri
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Z. Nikpor
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - H. Dabiri
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - F. Doustdar
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - H. Goudarzi
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - M. Allahyartorkaman
- Regional Tuberculosis Reference laboratory, Tehran University of Medical Sciences, Tehran, Iran
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Nasiri M, Heidary M, Azimi T, Goudarzi H, Tabarsi P, Darban-Sarokhalil D, Feizabadi M. Mycobacterium simiae pulmonary disease in Iran: systematic review and meta-analysis. New Microbes New Infect 2018; 26:118-123. [PMID: 30370055 PMCID: PMC6199180 DOI: 10.1016/j.nmni.2018.09.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 09/11/2018] [Accepted: 09/13/2018] [Indexed: 02/05/2023] Open
Abstract
Mycobacterium simiae is one of the most common nontuberculous mycobacteria (NTM) microorganisms causing lung disease in many countries in the world. A reliable estimate of the extent of M. simiae pulmonary disease has not been well investigated in Iran. We systematically searched multiple databases to identify relative studies. Studies were excluded if they did not use the American Thoracic Society (ATS) and Infectious Diseases Society of America (IDSA) diagnostic criteria for NTM diseases. Data were extracted independently and in duplicate. We assessed pooled estimate by using a random model effect, and sources of heterogeneity were assessed by using Cochran's Q and the I 2 statistic. The potential for publication bias was explored by using Begg's and Egger's tests. All analyses were conducted with Stata 14.0 (StataCorp, College Station, TX, USA). Of 172 articles identified, seven met the inclusion criteria. Of 355 patients who were culture positive for NTM, 82 had M. simiae pulmonary disease according to the ATS/IDSA diagnostic criteria. The pooled frequency of M. simiae pulmonary disease among patients with NTM was 25.0% (95% confidence interval, 16.8-33.2). No evidence of publication bias was observed among the included studies (p >0.05 for Begg's and Egger's tests). Clinical isolates of M. simiae are increasingly being recognized as a cause of pulmonary disease in Iran and need further attention by health authorities.
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Affiliation(s)
- M.J. Nasiri
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - M. Heidary
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - T. Azimi
- Department of Medical Microbiology, School of Public Health, Tehran, Iran
| | - H. Goudarzi
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - P. Tabarsi
- Clinical TB and Epidemiology Research Center, National Research Institute of Tuberculosis and Lung Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - D. Darban-Sarokhalil
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - M.M. Feizabadi
- Department of Medical Microbiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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Nasiri M, Rauf M, Kamfiroozie H, Zibaeenezhad MJ, Jamali Z. SIRT1 gene polymorphisms associated with decreased risk of atherosclerotic coronary artery disease. Gene 2018; 672:16-20. [PMID: 29885463 DOI: 10.1016/j.gene.2018.05.117] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 05/29/2018] [Accepted: 05/30/2018] [Indexed: 01/08/2023]
Abstract
Coronary artery disease (CAD) exhibits the rules of the multifactorial hereditary. Notwithstanding, the role of genetic factors in the prevalence of CAD is estimated very high. SIRT1 plays an athero-protective role and alterations in its expression have some important consequence in the metabolism, cholesterol, and fat deposition. The aim of our study was to investigate the association between rs4746720, rs12413112, and rs1467568 polymorphisms in the SIRT1 gene and CAD in the high-risk cases. In the present retrospective case-control study, 150 healthy individuals and 150 cases diagnosed with atherosclerotic lesions were investigated. ARMS PCR was used to determine the genotypes of rs4746720 polymorphism, while tetra primer-ARMS PCR was used for genotyping of rs12413112 and rs1467568 polymorphisms. Considering rs12413112 polymorphism, the frequency of the AG heterozygote genotype was significantly lower in cases than controls (P < 0.001). Furthermore, the frequency of the A-positive (AA+AG vs. GG) genotype was significantly different between groups (P < 0.001). The frequency of the variant A allele was 0.36% in cases and 0.46% in controls (P = 0.01). Except for a borderline protective effect in the present of rs1467568AG genotype, the allele and genotype distributions of both rs1467568 and rs4746720 polymorphisms did not differ between two groups. The haplotype constructed from rs1467568A, rs12413112A, and rs4746720T alleles showed a significant protective effect on the risk of CAD (OR: 0.53; 95%CI: 0.35-0.78; P = 0.001). In conclusion, the SIRT1 gene may contribute to the pathogenesis of CAD, while further investigations were suggested to confirm our results.
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Affiliation(s)
- M Nasiri
- Department of Biology, Islamic Azad University, Arsanjan Branch, Arsanjan, Iran.
| | - M Rauf
- Department of Biology, Islamic Azad University, Arsanjan Branch, Arsanjan, Iran
| | - H Kamfiroozie
- Cardiovascular Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M J Zibaeenezhad
- Cardiovascular Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Z Jamali
- Cardiovascular Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Demmer R, Nasiri M, Onat D, Trinh P, Akter N, Nwokocha J, Royzman E, Clemons A, Pinsino A, Brunjes D, Zuver A, Garan A, Topkara V, Takeda K, Takayama H, Naka Y, Farr M, Uhlemann A, Colombo P, Yuzefpolskaya M. Relationship Between Oral Microbiota, Inflammation and Congestion Among Advanced Heart Failure Patients. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Mollaei S, Nasiri M, Soltanmohammadi N, Shirsavar R, Ramos A, Amjadi A. Soap-film flow induced by electric fields in asymmetric frames. Phys Rev E 2018; 97:043110. [PMID: 29758613 DOI: 10.1103/physreve.97.043110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Indexed: 11/07/2022]
Abstract
Net fluid flow of soap films induced by (ac or dc) electric fields in asymmetric frames is presented. Previous experiments of controllable soap film flow required the simultaneous use of an electrical current passing through the film and an external electric field or the use of nonuniform ac electric fields. Here a single voltage difference generates both the electrical current going through the film and the electric field that actuates on the charge induced on the film. The film is set into global motion due to the broken symmetry that appears by the use of asymmetric frames. If symmetric frames are used, the film flow is not steady but time dependent and irregular. Finally, we study numerically these film flows by employing the model of charge induction in ohmic liquids.
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Affiliation(s)
- S Mollaei
- Department of Physics, Faculty of Science, University of Zanjan, Zanjan P.O. Box 45371-38791, Iran
| | - M Nasiri
- Department of Physics, Faculty of Science, University of Zanjan, Zanjan P.O. Box 45371-38791, Iran
| | - N Soltanmohammadi
- Department of Physics, Faculty of Science, University of Zanjan, Zanjan P.O. Box 45371-38791, Iran
| | - R Shirsavar
- Department of Physics, Faculty of Science, University of Zanjan, Zanjan P.O. Box 45371-38791, Iran and Department of Physics, Sharif University of Technology, Tehran P.O. Box 11365-9161, Iran
| | - A Ramos
- Departamento de Electrónica y Electromagnetismo, Facultad de Física, Universidad de Sevilla, Seville 41012, Spain
| | - A Amjadi
- Department of Physics, Sharif University of Technology, Tehran P.O. Box 11365-9161, Iran
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Colombo P, Yuzefpolskaya M, Nasiri M, Pinsino A, Onat D, Nwokocha J, Clemons A, Castagna F, Kleet A, Axsom K, Lin E, Haythe J, Gayat E, Mabaaza A, Demmer R. sCD146 - a Novel Marker of Systemic Venous Congestion - Positively Correlates With Plasma Endothelin-1 - Marker of Vasoconstriction and Inflammation - in Heart Failure. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Pinsino A, Masoumi A, Radhakrishnan J, Royzman E, Mabasa M, Castagna F, Zuver A, Nasiri M, Garan A, Topkara V, Takayama H, Takeda K, Naka Y, Demmer R, Colombo P, Yuzefpolskaya M. Hemodynamic Determinants of Decline in Renal Function During Left Ventricular Assist Device Support. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Yuzefpolskaya M, Nasiri M, Onat D, Royzman E, Nwokocha J, Pinsino A, Brunjes D, Trinh P, Zuver A, Garan A, Topkara V, Takayama H, Takeda K, Naka Y, Farr M, Uhlemann A, Colombo P, Demmer R. Gut Microbiome-Generated Metabolite Trimethylamine-N-Oxide is Reduced After Heart Transplantation and Continuous Flow Left Ventricular Assist Device Therapy in Advanced Heart Failure Patients. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Nasiri M, Dabiri H, Fooladi A, Amini S, Hamzehloo G, Feizabadi M. High rates of nontuberculous mycobacteria isolation from patients with presumptive tuberculosis in Iran. New Microbes New Infect 2017; 21:12-17. [PMID: 29188063 PMCID: PMC5695646 DOI: 10.1016/j.nmni.2017.08.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 08/30/2017] [Accepted: 08/31/2017] [Indexed: 11/19/2022] Open
Abstract
Nontuberculous mycobacteria (NTM) can cause disease which can be indistinguishable from tuberculosis (TB), posing a diagnostic and therapeutic challenge, particularly in low- and middle-income settings. We aimed to investigate the mycobacterial agents associated with presumptive clinical pulmonary TB in Iran. A total of 410 mycobacterial isolates, obtained between March 2014 and January 2016, from 7600 clinical samples taken from consecutive cases of presumptive diagnosis of TB were identified. Phenotypic and molecular tests were used to identify the isolated organisms to the species level. Single-locus and multilocus sequence analysis based on 16S rRNA, rpoB, hsp65 and ITS locus were used to confirm the results. Of 410 consecutive strains isolated from suspected TB subjects, 62 isolates (15.1%) were identified as NTM. Patients with positive NTM cultures met American Thoracic Society diagnostic criteria for NTM disease. Mycobacterium simiae was the most frequently encountered (38.7%), followed by Mycobacterium fortuitum (19.3%), M. kansasii (17.7%) and M. avium complex (8.0%). Isolation of NTM, including M. simiae, from suspected TB cases is a serious public health problem and merits further attention by health authorities, physicians and microbiologists.
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Affiliation(s)
- M.J. Nasiri
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Iran
| | - H. Dabiri
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Iran
| | - A.A.I. Fooladi
- Applied Microbiology Research Center, Baqiyatallah University of Medical Sciences, Iran
| | - S. Amini
- Regional Tuberculosis Reference Laboratory, Iran
| | - G. Hamzehloo
- Regional Tuberculosis Reference Laboratory, Iran
| | - M.M. Feizabadi
- Department of Microbiology, School of Medicine, Iran
- Thoracic Research Center, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran
- Corresponding author: M. M. Feizabadi, Department of Microbiology, Tehran University of Medical Sciences, School of Medicine, Tehran, IranDepartment of MicrobiologyTehran University of Medical SciencesSchool of MedicineTehranIran
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Abdi S, Nasiri M, Mesbahi A, Khani MH. Investigation of uranium (VI) adsorption by polypyrrole. J Hazard Mater 2017; 332:132-139. [PMID: 28285106 DOI: 10.1016/j.jhazmat.2017.01.013] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 12/24/2016] [Accepted: 01/09/2017] [Indexed: 06/06/2023]
Abstract
The purpose of this study was to investigate the adsorption of uranium (VI) ions on the polypyrrole adsorbent. Polypyrrole was synthesized by a chemical method using polyethylene glycol, sodium dodecylbenzenesulfonate, and cetyltrimethylammonium bromide as the surfactant and iron (III) chloride as an oxidant in the aqueous solution. The effect of various surfactants on the synthesized polymers and their performance as the uranium adsorbent were investigated. Adsorbent properties were characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) techniques. The effect of different parameters such as pH, contact time, initial metal ion concentrations, adsorbent dose, and the temperature was investigated in the batch system for uranium adsorption process. It has been illustrated that the adsorption equilibrium time is 7min. The results showed that the Freundlich model had the best agreement and the maximum adsorption capacity of polypyrrole for uranium (VI) was determined 87.72mg/g from Langmuir isotherm. In addition, the mentioned adsorption process was fast and the kinetic data were fitted to the Pseudo first and second order models. The adsorption kinetic data followed the pseudo-second-order kinetic model. Moreover, the thermodynamic parameters ΔG0, ΔH0 and ΔS0 showed that the uranium adsorption process by polypyrrole was endothermic and spontaneous.
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Affiliation(s)
- S Abdi
- Faculty of Chemical, Petroleum and Gas Engineering, Semnan University, Semnan 35195-363, Iran
| | - M Nasiri
- Faculty of Chemical, Petroleum and Gas Engineering, Semnan University, Semnan 35195-363, Iran.
| | - A Mesbahi
- Faculty of Chemical, Petroleum and Gas Engineering, Semnan University, Semnan 35195-363, Iran
| | - M H Khani
- Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, Tehran, 14395-836, Iran
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Nasiri M, Shirsavar R, Mollaei S, Ramos A. Numerical study of soap-film flow by nonuniform alternating electric fields. Phys Rev E 2017; 95:022806. [PMID: 28297867 DOI: 10.1103/physreve.95.022806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Indexed: 11/07/2022]
Abstract
Fluid flow of suspended liquid films induced by non-uniform alternating electric fields has been reported. The electric fields were generated by two rod-like electrodes perpendicular to the fluid surface. The observed fluid flow was explained qualitatively by considering a charge induction mechanism, where the electric field actuates on the charge induced on the film surface. In this paper we perform a numerical study of this fluid flow taking into account the charge induction mechanism. The numerical results are compared with experiments and good agreement is found. Finally, we propose the application of the device as a new kind of two dimensional fluid pump.
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Affiliation(s)
- M Nasiri
- Department of Physics, Faculty of Science, University of Zanjan, Zanjan, Iran
| | - R Shirsavar
- Department of Physics, Faculty of Science, University of Zanjan, Zanjan, Iran
| | - S Mollaei
- Department of Physics, Faculty of Science, University of Zanjan, Zanjan, Iran
| | - A Ramos
- Departamento de Electrónica y Electromagnetismo, Facultad de Física, Universidad de Sevilla, Sevilla, Spain
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16
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Pahlavani N, Entezari MH, Nasiri M, Miri A, Rezaie M, Bagheri-Bidakhavidi M, Sadeghi O. The effect of l-arginine supplementation on body composition and performance in male athletes: a double-blinded randomized clinical trial. Eur J Clin Nutr 2017; 71:544-548. [PMID: 28120856 DOI: 10.1038/ejcn.2016.266] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Revised: 11/20/2016] [Accepted: 12/01/2016] [Indexed: 02/05/2023]
Abstract
BACKGROUND/OBJECTIVE Athletes used a lot of dietary supplements to achieve the more muscle mass and improve their athletic performance. The objective of this study was to investigate the effect of l-arginine supplementation on sport performance and body composition in male soccer players. SUBJECTS/METHODS This double-blinded, randomized and placebo-controlled trial was conducted on 56 male soccer players, with age range of 16-35, who referred to sport clubs in Isfahan, Iran. Subjects were randomly assigned to either l-arginine or placebo groups. Athletes received daily either 2 g per day l-arginine supplement or the same amount of placebo (maltodextrin) for 45 days. Sport performance and also body mass index (BMI), body fat mass (BFM) and lean body mass (LBM) were measured at the beginning and end of the study. Also, 3-day dietary records were collected at three different time points (before, in the middle of, and at the end of the study). RESULTS The mean age of subjects was 20.85±4.29 years. Sport performance (VO2 max) significantly increased in l-arginine supplementation group (4.12±6.07) compared with placebo group (1.23±3.36) (P=0.03). This increase remained significant even after adjustment of baseline values, physical activity and usual dietary intake of subjects throughout the study. No significant effect of l-arginine supplementation was found on weight, BMI, BFM and LBM. CONCLUSIONS l-arginine supplementation (2 g per day) could increase the sport performance in male athletes, but had no effect on anthropometric measurements, including BMI, BFM and LBM. So, further studies are needed to shed light our findings.
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Affiliation(s)
- N Pahlavani
- Food Security Research Center and Department of Clinical Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran.,Department of Nutrition, Faculty of Medicine, Mashad University of Medical Sciences, Mashhad, Iran
| | - M H Entezari
- Food Security Research Center and Department of Clinical Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
| | - M Nasiri
- Department of Operating Room Technology, School of Paramedicine, Qom University of Medical Sciences, Qom, Iran
| | - A Miri
- Department of Nutrition, School of Health, Zabol University of Medical Sciences, Zabol, Iran
| | - M Rezaie
- Department of Nursing, School of Nursing and Midwifery, Isfahan University of Medical Sciences, Isfahan, Iran
| | - M Bagheri-Bidakhavidi
- Department of Nutrition, School of Health, Kerman University of Medical Sciences, Kerman, Iran
| | - O Sadeghi
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
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Shirsavar R, Nasiri M, Amjadi A, Nejati A, Sobhani SO, Habibi M. Rotation induced by uniform and non-uniform magnetic fields in a conducting fluid carrying an electric current. RSC Adv 2016. [DOI: 10.1039/c6ra24346k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
External magnetic field induces controllable rotation in a conducting fluid carrying an electric current.
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Affiliation(s)
- R. Shirsavar
- Department of Physics
- Faculty of Science
- University of Zanjan
- Zanjan
- Iran
| | - M. Nasiri
- Department of Physics
- Faculty of Science
- University of Zanjan
- Zanjan
- Iran
| | - A. Amjadi
- Department of Physics
- Sharif University of Technology
- Tehran
- Iran
| | - A. Nejati
- Physikalisches Institut and Bethe Center for Theoretical Physics
- Universität Bonn
- Germany
| | - S. O. Sobhani
- Department of Physics
- Sharif University of Technology
- Tehran
- Iran
- Department of Energy Engineering
| | - Mehdi Habibi
- Condensed Matter National Laboratory
- IPM
- Tehran
- Iran
- Institute of Physics
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Nasiri M, Rounaghi GH. Thermodynamic study of the complexation of Cd2+ cation with 1,4,10-trioxa-7,13-diazacyclopentadecane (Kryptofix 21) in acetonitrile and its binary mixtures with methanol and ethyl aacetate. RUSS J GEN CHEM+ 2015. [DOI: 10.1134/s1070363215050291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zamani S, Nasiri M, Haeili M, Kazemian H, Darban-Sarokhalil D, Fooladi A, Feizabadi M. Determination of circulating Mycobacterium tuberculosis strains and transmission patterns among TB patients in Iran, using 15 loci MIRU-VNTR. Int J Mycobacteriol 2015. [DOI: 10.1016/j.ijmyco.2014.11.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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20
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Alizadeh MA, Arab HA, Tabaie R, Nasiri M. Evaluation of seed and seedling emergence enhancement of some population of Sahandy savory (Satureja sahendica) by gibberlic acid, potasium nitrate, pre-cooling, physical and chemical scarification treatment. Pak J Biol Sci 2013; 16:1208-11. [PMID: 24506025 DOI: 10.3923/pjbs.2013.1208.1211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In greenhouse experiment, the seed samples of 3 populations were treated with treatments including: cold stratification, Gibberlic Acid (50 ppm and 100 ppm), Potassium nitrate (0.2%, 0.4%), physical scarification (sand paper), chemical scarification (Ethylic alcohol 70%) and distilled water (control), then these treated seed samples were sown in pots as randomize design with three replication. The germination characteristics including: germination percentage, speed of germination, length of root and shoot, seedling length, ratio of root length by shoot length, vigor index, fresh weight arid dry weight, ratio of dry weight by fresh weight were evaluated during 45 days of experiment. Comparing between three populations of Sahandy savory, seed germination characteristics of the Ghazvin population was higher than the other two populations. According to effect of treatment on germination seed characteristics, the species of savory and their population, it was concluded that effect of Gibberlic Acid and Potassium nitrate was higher than physical scarification and chemical scarification comparing with control. With more effective of gibberlic acid and KNO3 and cold treatment on seed germination enhancement of the population, it was clarified that the type of dormancy of some population of Sahandy savory was physiological dormancy.
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Affiliation(s)
- M A Alizadeh
- Research Institute of Forests and Rangeland, Iran
| | - H A Arab
- Islamic Azad university (Branch of Karaj), Iran
| | - R Tabaie
- Research Institute of Forests and Rangeland, Iran
| | - M Nasiri
- Research Institute of Forests and Rangeland, Iran
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21
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Nasiri M, Mirzaii M, Alfi A, Norozi P, Doost F, Fazli M. P371: Utilization of alternating currents as a novel procedure for increasing of disinfection efficacy against Staphylococcus aureus and Pseudomonas aeroginosa. Antimicrob Resist Infect Control 2013. [PMCID: PMC3688508 DOI: 10.1186/2047-2994-2-s1-p371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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22
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Nasiri M, Galehdari H, Darbouy M, Yavarian M, Keikhaee B. The role of exon 45 and 16 in the pathogenesis of Von Willebrand disease in Iranian Patients. Iran J Ped Hematol Oncol 2012; 2:164-70. [PMID: 24575258 PMCID: PMC3915433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Accepted: 09/08/2012] [Indexed: 11/09/2022]
Abstract
BACKGROUND Von Willebrand disease (VWD) is an autosomal recessive congenital bleeding disorder with deficiency or dysfunction of von Willebrand factor (VWF). The gene encoding for the VWF is located on chromosome 12, which is 178 Kb with 52 exons. Various mutations of this gene is responsible for the clinical features of VWD, but some single nucleotide polymorphisms make the molecular diagnosis of it very complicated.In this study genetic variations in two exons (45 & 16) of VWF gene in Iranian patients suffer from type 3 VWD from south west of Iran were evaluated. MATERIALS AND METHODS Genetic variations in exon 45 and exon 16 of VWF gene were evaluated in 33 patients diagnosed with type 3 VWD from south west of Iran. Two exons with their flanking introns were amplified by PCR and amplicons were analyzed by sequencing for any molecular changes. RESULTS No mutation was found in both selected regions. An A/C polymorphism in intron 44 was recognized in all patients in homozygous manner. This SNP reported for the first time from Iranian VWD patients. CONCLUSION Mutation of VWF gene is different in various ethnic groups, which finding of is important in the diagnosis of the VWD, especially for prenatal diagnosis. A few mutations are reported for exon 45 and 16 of this gene in Iran and other countries. But, present study didn't find any mutation in these patients. Mutation in other exons or introns should be evaluated in affected individuals from south west of Iran.
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Affiliation(s)
- M Nasiri
- Department of Genetics, Science and Research Branch, Islamic Azad University, Fars, Iran
| | - H Galehdari
- Research Centre for Thalassemia and Hemoglobinopathies of Ahvaz Jundishapur University of Medical Sciences Ahvaz, Iran
| | - M Darbouy
- Department of Genetics, Science and Research Branch, Islamic Azad University, Fars, Iran
| | - M Yavarian
- Hematology Research Centre, Shiraz University of Medical Science, Shiraz, Iran
| | - B Keikhaee
- Research Centre for Thalassemia and Hemoglobinopathies of Ahvaz Jundishapur University of Medical Sciences Ahvaz, Iran
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Tajik N, Shah-hosseini A, Mohammadi A, Jafari M, Nasiri M, Radjabzadeh MF, Farnia P, Jalali A. Susceptibility to pulmonary tuberculosis in Iranian individuals is not affected by compound KIR/HLA genotype. ACTA ACUST UNITED AC 2011; 79:90-6. [DOI: 10.1111/j.1399-0039.2011.01812.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Esfahlan RJ, Zarghami N, Esfahlan AJ, Mollazadeh M, Nejati K, Nasiri M. The Possible Impact of Obesity on Androgen, Progesterone and Estrogen Receptors (ERα and ERβ) Gene Expression in Breast Cancer Patients. Breast Cancer (Auckl) 2011; 5:227-37. [PMID: 22174584 PMCID: PMC3235995 DOI: 10.4137/bcbcr.s7707] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
BACKGROUND Obesity has been associated with increased mortality from hormone dependant cancers such as breast cancer which is the most prevalent cancer in women. The link between obesity and breast cancer can be attributed to excess estrogen produced through aromatization in adipose tissue. The role of steroid hormone receptors in breast cancer development is well studied but how obesity can affect the expression pattern of steroid hormones in patients with different grades of breast cancer was the aim of this study. METHODS In this case-control study, 70 women with breast cancer participated with different grades of obesity (36 none obese, BMI < 25 kg/m(2) and 34 obese, BMI ≥ 25 kg/m(2)). The mean age of participants was 44.53 ± 1.79 yr (21-70 yr). The serum level of estrogen, progesterone and androgen determined by ELISA. Following quantitative expression of steroid hormone receptors mRNA in tumor tissues evaluated by Real-time PCR. Patients with previous history of radiotherapy or chemotherapy were excluded. SPSS 16 was used for data analysis and P < 0.05 considered statistically significant. RESULTS The difference in ERα, ERβ and PR mRNA level between normal and obese patients was significant (P < 0.001). In addition, the expression of AR mRNA was found to be higher than other steroid receptors. There was no significant relation between ERβ gene expression in two groups (P = 0.68). We observed a significant relationship between ERα and AR mRNA with tumor stage and tumor grade, respectively (P = 0.023, P = 0.015). CONCLUSION According to the obtained results, it is speculated that obesity could paly a significant role in estrogen receptors gene expression and also could affect progression and proliferation of breast cancer cells.
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Abstract
Natural killer (NK) cells eliminate infected and transformed cells while still are self-tolerant. Interactions of the independently segregating Killer cell immunoglobulin-like receptors (KIR) and human leucocyte antigens (HLA) loci play a critical role in NK cell regulation. Different compound KIR-HLA genotypes can impart different thresholds of activation to the NK-cell repertoire and such genotypic variation has been found to confer altered risk in a number of human diseases including viral infections, autoimmune disorders, reproduction abnormalities and cancers. In this study, we presented a novel combined KIR-HLA polymerase chain reaction-sequence-specific primers genotyping assay for simultaneous determination of KIR genes and their three major HLA class I ligand groups (C1, C2, and Bw4). Moreover, known inhibitory and activating KIR + HLA (iKIR + HLA: 2DL2/3 + C1, 2DL1 + C2, 3DL1 + Bw4; and aKIR + HLA: 2DS2 + C1, 2DS1 + C2, 3DS1 + Bw4) combinations as well as co-inheritance of aKIR genes and iKIR + HLA pairs were analysed in a total of 200 unrelated healthy Iranian individuals. All tested subjects had at least one of the three iKIR + HLA pairs and the frequencies of various inhibitory combinations in the study group were: 31.5%, three iKIR + HLA pairs, 53.5%, two iKIR + HLA pairs, and 15%, 0ne iKIR + HLA pair. Furthermore, we revealed that majority of Iranians (69%) carry compound genotypes with greater number of inhibitory pairings than activating combinations (iKIR + HLA > aKIR + HLA). Conversely, iKIR + HLA < aKIR (45%) was dominant genotype in the study group. We conclude that selective evolutionary pressure has propensity to maintain KIR-HLA genotypes with more inhibitory combinations to guarantee self-tolerance. In contrast, existence of activating KIR genes without normal endogenous ligands, potentially arms the NK population for competent immunosurveillance and stronger defense against infections.
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Affiliation(s)
- N Tajik
- Division of Transplant Immunology and Immunogenetics, Department of Immunology, Iran University of Medical Sciences, Tehran, Iran.
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26
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Affiliation(s)
- M. Nasiri
- Research Lab for Advanced Separation Processes, Department of Chemical Engineering, Iran University of Science and Technology, Narmak, Tehran 16846, Iran
| | - S. N. Ashrafizadeh
- Research Lab for Advanced Separation Processes, Department of Chemical Engineering, Iran University of Science and Technology, Narmak, Tehran 16846, Iran
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Jalili K, Abbasi F, Nasiri M, Ghasemi M, Haddadi E. Preparation and Characterization of Expandable St/MMA Copolymers Produced by Suspension Polymerization. J CELL PLAST 2009. [DOI: 10.1177/0021955x08101272] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Free radical suspension copolymerization of styrene (St) with methyl methacrylate (MMA) in the presence of n-pentane was investigated. The batch polymerization was performed in a stirred reactor via a two-stage process. First, free radical suspension polymerization of St and MMA in aqueous media was carried out at about 80—90°C with the aid of a monofunctional initiator to the monomer conversions up to about 70%. Second process, called impregnation stage, consisted of a high temperature—high pressure cycle (110—120°C and 10 bars) in which the blowing agent was charged in the reactor and polymerization was carried out with the aid of a high temperature initiator. Fine particles of micron sizes of St/MMA copolymer were synthesized by manipulation of some experimental parameters governing the copolymerization system. Polymerization was carried out at different agitation rates, suspending agent and aqueous phase initiator concentrations as well as emulsifier amounts, while keeping constant the MMA/St ratio. To reach a desired bead size, the above parameters were optimized using the Taguchi method for experimental design and the relative importance of the mentioned parameters was analyzed. Particles with a spherical shape of 250—350 μm were formed. The obtained copolymers were also characterized in terms of molecular weight, polydispersity index, copolymer composition, morphology of the polymer beads, thermal behavior, and particle size and particle size distribution.
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Affiliation(s)
- K. Jalili
- Institute of Polymeric Materials, Sahand University of Technology P.O. Box 51335-1996, Tabriz, Iran
| | - F. Abbasi
- Institute of Polymeric Materials, Sahand University of Technology P.O. Box 51335-1996, Tabriz, Iran,
| | - M. Nasiri
- Institute of Polymeric Materials, Sahand University of Technology P.O. Box 51335-1996, Tabriz, Iran
| | - M. Ghasemi
- Institute of Polymeric Materials, Sahand University of Technology P.O. Box 51335-1996, Tabriz, Iran
| | - E. Haddadi
- Technical Higher Education Center of Tabriz, Tabriz, Iran
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Ashrafizadeh SN, Saien J, Reza B, Nasiri M. Development of an Empirical Model To Predict the Effect of Contaminants in Liquid−Liquid Extraction. Ind Eng Chem Res 2008. [DOI: 10.1021/ie0715557] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S. N. Ashrafizadeh
- Research Laboratory for Advanced Separation Processes, Department of Chemical Engineering, Iran University of Science & Technology, Narmak, Tehran 16846, Iran, and Department of Applied Chemistry, University of Bu-Ali Sina, Hamadan, 65174, Iran
| | - J. Saien
- Research Laboratory for Advanced Separation Processes, Department of Chemical Engineering, Iran University of Science & Technology, Narmak, Tehran 16846, Iran, and Department of Applied Chemistry, University of Bu-Ali Sina, Hamadan, 65174, Iran
| | - B. Reza
- Research Laboratory for Advanced Separation Processes, Department of Chemical Engineering, Iran University of Science & Technology, Narmak, Tehran 16846, Iran, and Department of Applied Chemistry, University of Bu-Ali Sina, Hamadan, 65174, Iran
| | - M. Nasiri
- Research Laboratory for Advanced Separation Processes, Department of Chemical Engineering, Iran University of Science & Technology, Narmak, Tehran 16846, Iran, and Department of Applied Chemistry, University of Bu-Ali Sina, Hamadan, 65174, Iran
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Yazdani M, Moghadam M, Nasiri M, Yazdannik A. Experiences of youth about causes of substance dependency. Eur Psychiatry 2008. [DOI: 10.1016/j.eurpsy.2008.01.1118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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30
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Nourbala MH, Hollisaaz MT, Nasiri M, Bahaeloo-Horeh S, Najafi M, Araghizadeh H, Rezaie Y, Lak M. Pain Affects Health-Related Quality of Life in Kidney Transplant Recipients. Transplant Proc 2007; 39:1126-9. [PMID: 17524910 DOI: 10.1016/j.transproceed.2007.03.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Chronic pain is prevalent in end-stage renal disease patients undergoing chronic hemodialysis. We do not fully know the intensity of chronic pain experienced by kidney recipients in comparison to those on chronic hemodialysis and healthy controls. Moreover, the effect of chronic pain on kidney recipients' health-related quality of life (HRQoL) is yet to be comprehensively addressed. We designed this study to find an answer to these questions. METHODS In this case control study, we studied 205 kidney recipients, 69 hemodialysis patients, and 100 healthy controls, who were matched for age, sex, monthly family income, and educational level. The patients were evaluated for the intensity of chronic pain by Visual Analogue Scale (VAS). HRQoL was measured with Short Form 36 (SF-36) in the kidney recipients. Chronic pain intensity was compared in the study groups, and in the kidney recipients the correlation between SF-36 subscores and severity of pain was assessed. RESULTS Severity of pain in the kidney recipients was lower than the hemodialysis patients, but more than the healthy controls (P=.001). The VAS pain score negatively correlated with the scores of SF- 36 total (r=-.329, P=01), mental health (r=-.190, P=07), physical health (r=-.275, P=.001), physical function (r=-.339, P=.001), role limitation due to physical problems (r=-.478, P=.001), role limitation due to emotional problems (r=-.326, P=.001), and bodily pain (r=-.894, P=.001). DISCUSSION The intensity of chronic pain experienced by the kidney recipients is less than that experienced by patients under chronic hemodialysis, but higher than healthy subjects. Focusing on chronic pain as a cause of post-renal transplantation morbidity is expected to improve post-renal transplantation quality of life.
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Affiliation(s)
- M-H Nourbala
- Nephrology/Urology Research Center (NURC), Baqiyatallah Medical Sciences University, Tehran, Iran.
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Abstract
AIM To observe the effects of fathers' smoking on respiratory symptoms in children between the ages of 6 mo and 5 y living in Tehran during the period January to December 2001. METHODS The caregivers of 622 children attending resident-based clinics in two university hospitals were interviewed about the respiratory illnesses incurred by the child during the previous 12 mo and the smoking habits of those living with the child. Children who lived in households in which any person, other than the father, smoked were excluded. RESULTS The analysis included 595 children, 40.6% of whom were living in homes where fathers smoked cigarettes. About 35% of smokers admitted to unrestricted smoking at home. In children not living with a smoker, 81.6% had experienced at least one episode of upper respiratory tract infection (URTI) during the previous year and the rate increased to 95.2% in passive smokers whose fathers were not restricted from smoking in front of the children, (p-value <0.01). A similar pattern was found for otitis media and asthma (p-value <0.05 and <0.01, respectively). The average number of URTI episodes during the previous year was significantly higher in children exposed to unrestricted smoking (p <0.01). CONCLUSION The study outlines the detrimental effects of paternal smoking on the respiratory health of children from a part of world in which this problem has not been studied previously, and highlights the importance of educating fathers to alter their smoking habits so that even if they do not stop smoking altogether, they should discontinue smoking indoors.
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Affiliation(s)
- F Shiva
- Department of Paediatrics, Taleghani Medical Centre, Shaheed Beheshti University of Medical Sciences, Evin, Tehran, Islamic Republic of Iran.
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Mohammadi M, Oghalaie A, Mohajerani N, Massarrat S, Nasiri M, Bennedsen M, Colding H, Andersen LP. Prevalence of Helicobacter pylori vacuolating cytotoxin and its allelic mosaicism as a predictive marker for Iranian dyspeptic patients. Bull Soc Pathol Exot 2003; 96:3-5. [PMID: 12784586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Helicobacter pylori infects the majority of the population in the developing countries. However, the rate of gastrointestinal complications such as peptic ulcers and gastric malignancies has no parallel with the infection. In order to determine whether cytotoxin (vacA) and its allelic polymorphism can serve as screening markers for such a population, H. pylori strains were isolated from one hundred and thirty two dyspeptic patients. H. pylori genomic DNA was extracted and underwent PCR-amplification for the cytotoxin alleles. Genotyping of the signal sequence region of the vacA gene identified 68% (70 out of 103) of patients with non ulcer dyspepsia (NUD) and 79% (23 out of 29) of the patients with peptic ulcer disease (PUD) possessing the s1 genotype. S1 strains were significantly more prevalent among patients with PUD as compared to the NUD (p < 0.05). In regard to the middle region, 55% of the patient isolates belonged to the m2 genotype with no correlation to disease. The s1m2 genotype was the most prevalent among all patients and significantly correlated with the PUD group (p < 0.05).
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Affiliation(s)
- M Mohammadi
- Biotechnology Department, Pasteur Institute of Iran, Tehran, Iran, 14136.
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33
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Affiliation(s)
- A Derakhshan
- Organ Transplantation Research Center, Nemazee Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
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Marco MP, Nasiri M, Kurth MJ, Hammock BD. Enzyme-linked immunosorbent assay for the specific detection of the mercapturic acid metabolites of naphthalene. Chem Res Toxicol 1993; 6:284-93. [PMID: 8318650 DOI: 10.1021/tx00033a006] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The measurement of metabolites constitutes a useful tool for detection of exposure and in pharmacokinetic studies. Epoxidation with subsequent glutathione conjugation and mercapturic acid formation is an important deactivation pathway for naphthalene, a toxin which presumably causes lung disease. The mercapturic acid conjugates of naphthalene [NaphMA (1), N-acetyl-S-(1,2-dihydro-1-hydroxy-2-naphthyl)cysteine (1a), and N-acetyl-S-(1,2-dihydro-2-hydroxy-1-naphthyl)cysteine (1b)], its most important urinary metabolites, and other structurally related derivatives, such as N-acetyl-S-(1,2,3,4-tetrahydro-2-hydroxy-1-naphthyl) cysteine (2), N-acetyl-S-(3-hydroxy-1,2,3,4-tetrahydro-2-naphthyl)cysteine (3), and N-acetyl-S-(2-hydroxy-1-phenylethyl)cysteine (4a) and N-acetyl-S-(2-hydroxy-2-phenylethyl)cysteine (4b) as an isomeric mixture, were synthesized to develop an ELISA (enzyme-linked immunosorbent assay) for the specific detection of NaphMA (1). Compound 1, as an isomeric mixture, was used to raise antibodies by immunizing six rabbits with the corresponding KLH (keyhole limpet hemocyanin) and BSA (bovine serum albumin) derivatives (1KLH and 1BSA). The remaining compounds were covalently attached to BSA, conalbumin, and ovalbumin to be used as coating antigens. The best assay was obtained in a homologous system combining serum Ab2357 (1KLH) and 1BSA as coating antigen. The immunoassay has an I50 of 4-6 ng/mL and a detection limit of 1-2 ng/mL. Because of the known instability of the mercapturic acid conjugate of naphthalene 1, leading to the fully aromatic compound 20, a system involving HPLC is described to check the stability of the NaphMA stock solutions used in the assay. Cross-reactivity studies show high specificity toward the NaphMA. Other related compounds as well as the dehydrated derivative 20 are not recognized by the antibody in this ELISA system.
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Affiliation(s)
- M P Marco
- Department of Entomology, University of California, Davis 95616
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Miller MG, McEuen SF, Nasiri M, Eck DL, Kurth MJ. Application of ELISA techniques to metabolic disposition studies for 1,3-dinitrobenzene: comparison with HPLC and radiochemical methods. Chem Res Toxicol 1991; 4:324-9. [PMID: 1912316 DOI: 10.1021/tx00021a011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
An enzyme-linked immunosorbent assay (ELISA) is reported for the detection and quantitation of 1,3-dinitrobenzene, a widely used chemical intermediate in industrial syntheses and potent testicular toxicant in rats. Radiolabeled [14C]-1,3-dinitrobenzene (25 mg/kg, ip) was administered to rats, and the blood disappearance curve generated with the ELISA assay was compared with HPLC separation and quantitation by using both UV and radiochemical methods. An excellent correlation was found between the two methods. Matrix effects from the blood samples were minimal. Cross reactivity with metabolites of 1,3-dinitrobenzene occurred only at levels that were 3 orders of magnitude greater than for the parent compound. The specificity of the ELISA for 1,3-dinitrobenzene was further demonstrated with a variety of other nitroaromatic compounds, of which only 2,4-dinitrotoluene showed significant cross reactivity. The sensitivity and specificity of the 1,3-dinitrobenzene ELISA demonstrate the usefulness of an approach which, if verified with conventional analytical methods, allows rapid and inexpensive measurement of xenobiotic levels in biological samples.
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Affiliation(s)
- M G Miller
- Department of Environmental Toxicology, University of California, Davis 95616
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