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Sarrafioun F, Jamehbozorgi S, Ramezani M, Izadkhah V. Synthesis of Phthalazine Derivatives through a One-Pot Three-Component Reaction Using a Highly Efficient and Recyclable Magnetic Cobalt Nanocatalyst. Russ J Org Chem 2022. [DOI: 10.1134/s1070428022100141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Ramezani M, Razavi R. Wideband RCS reduction due to plasma generated by radioactive nuclei for cylindrical object. Sci Rep 2022; 12:12035. [PMID: 35835810 PMCID: PMC9283535 DOI: 10.1038/s41598-022-16336-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 07/08/2022] [Indexed: 11/20/2022] Open
Abstract
Radar cross section reduction has been one of the most important research topics in recent years. Plasma-based stealth is a method of reducing the radar cross section, which dampens the electromagnetic waves and reduces the amount of return waves. In this paper, a coating of the radioactive nucleus \documentclass[12pt]{minimal}
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\begin{document}$$^{241}{\mathrm{Am}}$$\end{document}241Am on the surface of the cylinder with a radius of 10 cm is considered and the range of the emitted alpha particles and the electron density generated in the air are obtained using the Geant4 code under standard temperature and pressure conditions. By finite element method solution, the radar cross section of the conductive cylindrical object has been simulated and extracted in the presence and absence of plasma created by alpha-particles. The obtained results show a reduction of 5–8 dB \documentclass[12pt]{minimal}
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\begin{document}$$\mathrm{m}^2$$\end{document}m2 in the radar cross section in the frequency range of 2–12 GHz for specific activity source of 1 Ci/\documentclass[12pt]{minimal}
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\begin{document}$$\mathrm{cm}^2$$\end{document}cm2.
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Affiliation(s)
- M Ramezani
- Department of Physics, Faculty of Science, Imam Hossein Comperhensive University, Tehran, Iran.
| | - R Razavi
- Department of Physics, Faculty of Science, Imam Hossein Comperhensive University, Tehran, Iran
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Mostofi N, Aghamohammadi Zanjirabad H, Vafaeinejad A, Ramezani M, Hemmasi A. Developing an SDSS for optimal sustainable roof covering planning based on UHI variation at neighborhood scale. Environ Monit Assess 2021; 193:372. [PMID: 34061262 DOI: 10.1007/s10661-021-09151-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 05/17/2021] [Indexed: 06/12/2023]
Abstract
Nowadays, academics have paid special attention to global warming, because it has several issues such as urban heat island (UHI) related to the quality of life. For this purpose, a spatial decision support system (SDSS) has been developed to investigate the effect of parcels' roof covering type on surface heat island (SHI) values and its variation at the neighborhood scale in Tehran, Iran. This SDSS, as the innovation of the present research, consists of two main steps including estimating the UHI value in the study area and adopting the optimum set of parcels to change their roofs' cover with three types of vegetation, high-albedo material, and flagstone. The first step is accomplished by aggregating various indices related to land cover obtained from Landsat 8 images. The aggregation is done by linear regression method (LRM) with an RMSE and R2 equal to 0.942 and 0.897, respectively. Then, the genetic algorithm was used to select the optimal subset, including 10% of the parcels in the area, to change their roof covering type based on minimizing the UHI's variation. The standard deviation obtained after the changes improved from 13.222 to 10.781 °C. The results indicate that to control UHI in the center of the region, it is necessary to inhibit UHI effects at the boundary of the study area with vegetation roof covering since flagstone and high-albedo materials have local effects on controlling the UHI effects.
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Affiliation(s)
- N Mostofi
- Department of Remote Sensing and Geographic Information System, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - H Aghamohammadi Zanjirabad
- Department of Remote Sensing and Geographic Information System, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran.
| | - A Vafaeinejad
- Faculty of Civil, Water and Environmental Engineering, Shahid Beheshti University , Tehran, Iran
| | - M Ramezani
- Department of Environmental Science, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - A Hemmasi
- Department of Wood and Paper Engineering, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
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Ramezani M, Mouches P, Yoon E, Rajashekar D, Ruskey JA, Leveille E, Martens K, Kibreab M, Hammer T, Kathol I, Maarouf N, Sarna J, Martino D, Pfeffer G, Gan-Or Z, Forkert ND, Monchi O. Investigating the relationship between the SNCA gene and cognitive abilities in idiopathic Parkinson's disease using machine learning. Sci Rep 2021; 11:4917. [PMID: 33649398 PMCID: PMC7921412 DOI: 10.1038/s41598-021-84316-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 02/10/2021] [Indexed: 01/16/2023] Open
Abstract
Cognitive impairments are prevalent in Parkinson's disease (PD), but the underlying mechanisms of their development are unknown. In this study, we aimed to predict global cognition (GC) in PD with machine learning (ML) using structural neuroimaging, genetics and clinical and demographic characteristics. As a post-hoc analysis, we aimed to explore the connection between novel selected features and GC more precisely and to investigate whether this relationship is specific to GC or is driven by specific cognitive domains. 101 idiopathic PD patients had a cognitive assessment, structural MRI and blood draw. ML was performed on 102 input features including demographics, cortical thickness and subcortical measures, and several genetic variants (APOE, MAPT, SNCA, etc.). Using the combination of RRELIEFF and Support Vector Regression, 11 features were found to be predictive of GC including sex, rs894280, Edinburgh Handedness Inventory, UPDRS-III, education, five cortical thickness measures (R-parahippocampal, L-entorhinal, R-rostral anterior cingulate, L-middle temporal, and R-transverse temporal), and R-caudate volume. The rs894280 of SNCA gene was selected as the most novel finding of ML. Post-hoc analysis revealed a robust association between rs894280 and GC, attention, and visuospatial abilities. This variant indicates a potential role for the SNCA gene in cognitive impairments of idiopathic PD.
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Affiliation(s)
- Mehrafarin Ramezani
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute (HBI), Cummings School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Pauline Mouches
- Hotchkiss Brain Institute (HBI), Cummings School of Medicine, University of Calgary, Calgary, AB, Canada
- Biomedical Engineering Graduate Program, University of Calgary, Calgary, Canada
- Department of Radiology, University of Calgary, Calgary, AB, Canada
| | - Eunjin Yoon
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute (HBI), Cummings School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Deepthi Rajashekar
- Hotchkiss Brain Institute (HBI), Cummings School of Medicine, University of Calgary, Calgary, AB, Canada
- Biomedical Engineering Graduate Program, University of Calgary, Calgary, Canada
- Department of Radiology, University of Calgary, Calgary, AB, Canada
| | - Jennifer A Ruskey
- Montreal Neurological Institute, McGill University, Montreal, QC, Canada
- Department of Neurology and Neurosurgery, McGill University, Montreal, QC, Canada
| | - Etienne Leveille
- Montreal Neurological Institute, McGill University, Montreal, QC, Canada
| | - Kristina Martens
- Hotchkiss Brain Institute (HBI), Cummings School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Mekale Kibreab
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute (HBI), Cummings School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Tracy Hammer
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute (HBI), Cummings School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Iris Kathol
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute (HBI), Cummings School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Nadia Maarouf
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute (HBI), Cummings School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Justyna Sarna
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute (HBI), Cummings School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Davide Martino
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute (HBI), Cummings School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Gerald Pfeffer
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute (HBI), Cummings School of Medicine, University of Calgary, Calgary, AB, Canada
- Department of Medical Genetics, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Ziv Gan-Or
- Montreal Neurological Institute, McGill University, Montreal, QC, Canada
- Department of Neurology and Neurosurgery, McGill University, Montreal, QC, Canada
- Department of Human Genetics, McGill University, Montreal, QC, Canada
| | - Nils D Forkert
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute (HBI), Cummings School of Medicine, University of Calgary, Calgary, AB, Canada
- Department of Radiology, University of Calgary, Calgary, AB, Canada
| | - Oury Monchi
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
- Hotchkiss Brain Institute (HBI), Cummings School of Medicine, University of Calgary, Calgary, AB, Canada.
- Department of Radiology, University of Calgary, Calgary, AB, Canada.
- Department of Neurology and Neurosurgery, McGill University, Montreal, QC, Canada.
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Jin Yoon E, Ismail Z, Kathol I, Kibreab M, Hammer T, Lang S, Ramezani M, Auclair-Ouellet N, Sarna JR, Martino D, Furtado S, Monchi O. Patterns of brain activity during a set-shifting task linked to mild behavioral impairment in Parkinson's disease. Neuroimage Clin 2021; 30:102590. [PMID: 33640685 PMCID: PMC7907973 DOI: 10.1016/j.nicl.2021.102590] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 12/24/2020] [Accepted: 02/03/2021] [Indexed: 11/15/2022]
Abstract
PD with mild behavioral impairment revealed deficits in cognitive flexibility. Brain activities during a set-shifting task linked with MBI in PD was evaluated. PD-MBI revealed reduced activity in the prefrontal and posterior parietal cortices. The prefrontal activity was associated with cognitive impairment in PD-MBI. High MBI-C score was associated with reduced deactivation in the hippocampus.
Mild behavioral impairment (MBI) is a neurobehavioral syndrome characterized by later life emergence of sustained neuropsychiatric symptoms, as an at-risk state for incident cognitive decline and dementia. Prior studies have reported that neuropsychiatric symptoms are associated with cognitive abilities in Parkinson’s disease (PD) patients, and we have recently found a strong correlation between MBI and cognitive performance. However, the underlying neural activity patterns of cognitive performance linked to MBI in PD are unknown. Fifty-nine non-demented PD patients and 26 healthy controls were scanned using fMRI during performance of a modified version of the Wisconsin card sorting task. MBI was evaluated using the MBI-checklist, and PD patients were divided into two groups, PD-MBI and PD-noMBI. Compared to the PD-noMBI group and healthy controls, the PD-MBI group revealed less activation in the prefrontal and posterior parietal cortices, and reduced deactivation in the medial temporal region. These results suggest that in PD, MBI reflects deficits in the frontoparietal control network and the hippocampal memory system.
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Affiliation(s)
- Eun Jin Yoon
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada; Hotchkiss Brain Institute, Cumming School of Medicine, Calgary, Alberta, Canada
| | - Zahinoor Ismail
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada; Hotchkiss Brain Institute, Cumming School of Medicine, Calgary, Alberta, Canada; Departments of Psychiatry and Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Iris Kathol
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada; Hotchkiss Brain Institute, Cumming School of Medicine, Calgary, Alberta, Canada
| | - Mekale Kibreab
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada; Hotchkiss Brain Institute, Cumming School of Medicine, Calgary, Alberta, Canada
| | - Tracy Hammer
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada; Hotchkiss Brain Institute, Cumming School of Medicine, Calgary, Alberta, Canada
| | - Stefan Lang
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada; Hotchkiss Brain Institute, Cumming School of Medicine, Calgary, Alberta, Canada
| | - Mehrafarin Ramezani
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada; Hotchkiss Brain Institute, Cumming School of Medicine, Calgary, Alberta, Canada
| | | | - Justyna R Sarna
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada; Hotchkiss Brain Institute, Cumming School of Medicine, Calgary, Alberta, Canada
| | - Davide Martino
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada; Hotchkiss Brain Institute, Cumming School of Medicine, Calgary, Alberta, Canada
| | - Sarah Furtado
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada; Hotchkiss Brain Institute, Cumming School of Medicine, Calgary, Alberta, Canada
| | - Oury Monchi
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada; Hotchkiss Brain Institute, Cumming School of Medicine, Calgary, Alberta, Canada; Department of Radiology, University of Calgary, Calgary, Alberta, Canada.
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Ramezani M, Ruskey JA, Martens K, Kibreab M, Javer Z, Kathol I, Hammer T, Cheetham J, Leveille E, Martino D, Sarna JR, Gan-Or Z, Pfeffer G, Ismail Z, Monchi O. Association Between BDNF Val66Met Polymorphism and Mild Behavioral Impairment in Patients With Parkinson's Disease. Front Neurol 2021; 11:587992. [PMID: 33584494 PMCID: PMC7874164 DOI: 10.3389/fneur.2020.587992] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 07/27/2020] [Accepted: 12/02/2020] [Indexed: 12/13/2022] Open
Abstract
Neuropsychiatric symptoms (NPS) are common in Parkinson's disease (PD) and have demonstrated an association with the p. Val66Met, a polymorphism in the BDNF gene. Mild behavioral impairment (MBI) is a validated syndrome describing emergent and persistent NPS in older adults as a marker of potential cognitive decline and dementia. This study investigated if PD patients with the Met allele were more likely to have MBI and whether they had impairments in specific domains of MBI using the Mild Behavioral Impairment Checklist (MBI-C) as the MBI ascertainment tool. One hundred forty-six PD patients were screened for neuropsychiatric and cognitive impairments with the MBI-C and the Montreal Cognitive Assessment (MoCA). All participants were genotyped for the BDNF p.Val66Met single-nucleotide polymorphism (SNP) using TaqMan Genotyping Assay. Statistical analysis was performed using multiple linear and logistic regression models. Met carriers had a 2 times higher likelihood of being MBI positive (MBI-C total score ≥8) than Val carriers. Met carriers had significantly higher MBI-C total scores and significantly greater impairments in the mood/anxiety and the psychotic domains of MBI-C compared to Val carriers. These findings indicate that the BDNF Met allele is associated with a higher neuropsychiatric burden in PD.
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Affiliation(s)
- Mehrafarin Ramezani
- Department of Clinical Neuroscience, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Jennifer A. Ruskey
- Montreal Neurological Institute, McGill University, Montreal, QC, Canada
- Department of Neurology and Neurosurgery, McGill University, Montreal, QC, Canada
| | - Kristina Martens
- Department of Clinical Neuroscience, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Mekale Kibreab
- Department of Clinical Neuroscience, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Zainul Javer
- Department of Clinical Neuroscience, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Iris Kathol
- Department of Clinical Neuroscience, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Tracy Hammer
- Department of Clinical Neuroscience, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Jenelle Cheetham
- Department of Clinical Neuroscience, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Etienne Leveille
- Montreal Neurological Institute, McGill University, Montreal, QC, Canada
| | - Davide Martino
- Department of Clinical Neuroscience, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Justyna R. Sarna
- Department of Clinical Neuroscience, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Ziv Gan-Or
- Montreal Neurological Institute, McGill University, Montreal, QC, Canada
- Department of Neurology and Neurosurgery, McGill University, Montreal, QC, Canada
- Department of Human Genetics, McGill University, Montreal, QC, Canada
| | - Gerald Pfeffer
- Department of Clinical Neuroscience, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Zahinoor Ismail
- Department of Clinical Neuroscience, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Oury Monchi
- Department of Clinical Neuroscience, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
- Department of Neurology and Neurosurgery, McGill University, Montreal, QC, Canada
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Ramezani M, Nazari M, Shahmardan M, Ahmadi G. Experimental study and visualization of impacting spherical hydrophobic particles on an air – Liquid interface: Newtonian and Boger liquid analysis. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2020.116155] [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: 10/23/2022]
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Ramezani M, Mazani M, Tabatabaei M, Rahimian A, Mosaferi E, Hedayati M. Medullary thyroid cancer is associated with high serum vitamin D level and polymorphism of vitamin D receptors. Physiol Int 2020; 107:120-133. [PMID: 32491284 DOI: 10.1556/2060.2020.00011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 01/26/2019] [Accepted: 01/28/2020] [Indexed: 12/11/2022]
Abstract
Background Thyroid cancer is the most common endocrine malignancy. Studies have observed an anti-cancer effect for vitamin D and found that polymorphisms of vitamin D receptors can influence the prevalence of various cancers. The present study investigated the serum level of vitamin D and FokI, BsmI and Tru9I polymorphisms of vitamin D receptors. Methods Forty patients with medullary thyroid cancer and 40 healthy controls were investigated. The genomic DNA of the subjects was extracted using saturated salt/proteinase K and investigated by PCR sequencing. Serum levels of vitamin D were evaluated by ELISA. The results were analyzed in SPSS and GraphPad Prism 5 software. Results The genotypic and allelic frequencies of FokI and BsmI polymorphisms showed no significant differences between test and control groups. For Tru9I polymorphism, Tt genotype and t allelic frequency in the test group were significantly different from those of the control group. Also, we found Tt genotype and t allelic frequency to be significantly associated with medullary thyroid cancer (MTC) type and the agressiveness of the disease. The average serum vitamin D level was 23.32 ng/mL and 18.95 ng/mL for patients and controls, respectively, and the difference between the two groups was statistically significant. Moreover, we found high serum vitamin D level to be associated with t allelic frequency. Conclusions Unexpectedly, the mean serum vitamin D level of the test group was significantly higher than that of the control group. Tru9I polymorphism was found to be significantly correlated with the prevalence of medullary thyroid carcinoma.
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Affiliation(s)
- M Ramezani
- 1Department of Biochemistry, School of Medicine, Ardabil University of Medical Science, Ardabil, Iran
| | - M Mazani
- 1Department of Biochemistry, School of Medicine, Ardabil University of Medical Science, Ardabil, Iran
| | - M Tabatabaei
- 2Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - A Rahimian
- 3Department of Medical Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - E Mosaferi
- 4Department of Immunology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - M Hedayati
- 5Cellular and Molecular Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Alizadeh F, Ramezani M, Piravar Z. Effects of Stachys sylvatica hydroalcoholic extract on the ovary and hypophysis-gonadal axis in a rat with polycystic ovary syndrome. Middle East Fertil Soc J 2020. [DOI: 10.1186/s43043-020-0015-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Polycystic ovary syndrome (PCOS) is the most common endocrinopathy affecting women. The purpose of this study is to evaluate the effects of Stachys sylvatica hydroalcoholic extract on biochemical and histological parameters in a rat model of polycystic ovary syndrome. Thirty adult female Wistar rats with an average weight of 180 g were divided into five groups of six rats. Animals were divided into groups of control, PCOS (intramuscular injection of 2 mg estradiol valerate, Aburaihan Co., Iran/rat, once), and treated with hydroalcoholic extract of Stachys sylvatica. After 60 days of PCOS induction, 100, 250, and 500 mg/kg BW Stachys sylvatica hydroalcoholic extract were injected intraperitoneally. The control group was just injected with olive oil as a solvent. After 10 days of treatment, animals were weighed and then sacrificed and blood samples were taken from their heart for hormonal studies. Ovaries of all groups were cut for histological studies and fixed in formaldehyde, and 7-μm sections were prepared by microtome and stained using hematoxylin–eosin. The data were analyzed by one-way ANOVA and Tukey-Kramer post hoc test with the SPSS software. The significant level was p < 0.05.
Results
The Stachys sylvatica extract can improve obesity in the PCOS group. The histological and hormonal results showed that PCOS induction can decrease the number of preantral, antral, and Graafian follicles as well as corpus luteum in comparison with the control (p < 0.001), whereas the number of cystic follicles increased significantly (p < 0.001). After treatment with Stachys sylvatica hydroalcoholic extract (500 mg/kg), a significant increase was observed in all these parameters. In addition, the number of cystic follicles decreased significantly (p < 0.001). The level of LH and FSH hormones decreased significantly (p < 0.01) in the PCOS group compared with the control. In contrast, the estrogen level increased significantly (p < 0.01). In the 250 and 500 mg/kg group, treatment with the extract could increase FSH and decrease estrogen concentration significantly relative to the PCOS group (p < 0.01). Results of antral follicle morphometry indicated an increase in follicle diameter and theca thickness, but the thickness of the granulosa layer decreased significantly. An improvement in these measurements was observed in the treated PCOS groups with all doses.
Conclusions
It can be concluded that Stachys sylvatica hydroalcoholic extract can improve some symptoms of polycystic ovary syndrome because of components such as iridoids, flavonoids, and sesquiterpenes with antioxidant and anti-inflammatory effects. In this experiment, 500 mg/kg dose of extract was considered as the most effective dose.
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Sarrafioun F, Jamehbozorgi S, Ramezani M. Synthesis of Tetrazoles Catalyzed by Novel Cobalt Magnetic Nanoparticles. Russ J Org Chem 2020. [DOI: 10.1134/s1070428019110216] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Jafarzade M, Ramezani M, Hedayati F, Mokhtarzade Z, Zare B, Sabet MS, Norouzi P, Malboobi MA. Antibody-Mediated Resistance to Rhizomania Disease in Sugar Beet Hairy Roots. Plant Pathol J 2019; 35:692-697. [PMID: 31832049 PMCID: PMC6901245 DOI: 10.5423/ppj.oa.04.2018.0073] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Revised: 08/31/2018] [Accepted: 10/01/2018] [Indexed: 06/10/2023]
Abstract
Agrobacterium rhizogenes-mediated transformation of sugar beet hairy roots expressing single-chain variable fragment (scFv) was exploited to evaluate the efficacy of four antibody-based constructs for interfering with the Beet necrotic yellow vein virus infection. The scFv specific to a major coat protein of virus, p21, was targeted to various cellular compartments including the cytosol (pIC and pICC constructs), apoplast (pIA), and mitochondrion (pIM). After mechanical virus inoculation, most of the hairy root clones expressing scFv in the cytosol displayed low virus titers while the majority of transgenic hairy root clones accumulated antibody in outer membrane of mitochondria or apoplast were infected. This hairy root system provided an efficient and rapid approach to initially investigating root disease resistance like rhizomania prior to transform whole recalcitrant plants such as sugar beet.
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Affiliation(s)
- M. Jafarzade
- Department of Plant Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran 14965-161,
Iran
| | - M. Ramezani
- Department of Plant Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran 14965-161,
Iran
| | - F. Hedayati
- Department of Plant Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran 14965-161,
Iran
| | - Z. Mokhtarzade
- Department of Plant Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran 14965-161,
Iran
| | - B. Zare
- Department of Plant Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran 14965-161,
Iran
| | - M. S. Sabet
- Department of Agriculture, Tarbiat Modares University, Tehran 14115-336,
Iran
| | - P. Norouzi
- Sugar Beet Seed Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj 31585-4114,
Iran
| | - M. A. Malboobi
- Department of Plant Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran 14965-161,
Iran
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Joukar A, Ramezani M, MirMostafaee SMTK. Estimation of P(X > Y) for the power Lindley distribution based on progressively type II right censored samples. J STAT COMPUT SIM 2019. [DOI: 10.1080/00949655.2019.1685994] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- A. Joukar
- Department of Statistics, Shiraz University, Shiraz, Iran
| | - M. Ramezani
- Department of Statistics, Faculty of Mathematical Sciences, University of Mazandaran, Babolsar, Iran
| | - S. M. T. K. MirMostafaee
- Department of Statistics, Faculty of Mathematical Sciences, University of Mazandaran, Babolsar, Iran
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13
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Lang S, Hanganu A, Gan LS, Kibreab M, Auclair‐Ouellet N, Alrazi T, Ramezani M, Cheetham J, Hammer T, Kathol I, Sarna J, Monchi O. Network basis of the dysexecutive and posterior cortical cognitive profiles in Parkinson's disease. Mov Disord 2019; 34:893-902. [DOI: 10.1002/mds.27674] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 03/04/2019] [Accepted: 03/06/2019] [Indexed: 12/14/2022] Open
Affiliation(s)
- Stefan Lang
- Cumming School of MedicineHotchkiss Brain Institute Calgary AB Canada
- Department of Clinical Neurosciences and Department of RadiologyUniversity of Calgary Calgary AB Canada
| | - Alexandru Hanganu
- Cumming School of MedicineHotchkiss Brain Institute Calgary AB Canada
- Department of Clinical Neurosciences and Department of RadiologyUniversity of Calgary Calgary AB Canada
- Centre de RechercheInstitut Universitaire de Gériatrie de Montréal Montreal QC Canada
| | - Liu Shi Gan
- Cumming School of MedicineHotchkiss Brain Institute Calgary AB Canada
| | - Mekale Kibreab
- Cumming School of MedicineHotchkiss Brain Institute Calgary AB Canada
| | - Noémie Auclair‐Ouellet
- Cumming School of MedicineHotchkiss Brain Institute Calgary AB Canada
- McGill University School of Communication Sciences and Disorders Montreal Canada
| | - Tazrina Alrazi
- Cumming School of MedicineHotchkiss Brain Institute Calgary AB Canada
- Department of Clinical Neurosciences and Department of RadiologyUniversity of Calgary Calgary AB Canada
| | - Mehrafarin Ramezani
- Cumming School of MedicineHotchkiss Brain Institute Calgary AB Canada
- Department of Clinical Neurosciences and Department of RadiologyUniversity of Calgary Calgary AB Canada
| | - Jenelle Cheetham
- Cumming School of MedicineHotchkiss Brain Institute Calgary AB Canada
| | - Tracy Hammer
- Cumming School of MedicineHotchkiss Brain Institute Calgary AB Canada
| | - Iris Kathol
- Cumming School of MedicineHotchkiss Brain Institute Calgary AB Canada
| | - Justyna Sarna
- Cumming School of MedicineHotchkiss Brain Institute Calgary AB Canada
- Department of Clinical Neurosciences and Department of RadiologyUniversity of Calgary Calgary AB Canada
| | - Oury Monchi
- Cumming School of MedicineHotchkiss Brain Institute Calgary AB Canada
- Department of Clinical Neurosciences and Department of RadiologyUniversity of Calgary Calgary AB Canada
- Centre de RechercheInstitut Universitaire de Gériatrie de Montréal Montreal QC Canada
- Department of NeurologyMontreal General Hospital Montreal QC Canada
- Department of Radiology, Radio‐Oncology, and Nuclear MedicineUniversité de Montréal Montreal QC Canada
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14
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Abstract
A fluctuation relation for the heat exchange of an open quantum system under a thermalizing Markovian dynamics is derived. We show that the probability that the system absorbs an amount of heat from its bath, at a given time interval, divided by the probability of the reverse process (releasing the same amount of heat to the bath) is given by an exponential factor which depends on the amount of heat and the difference between the temperatures of the system and the bath. Interestingly, this relation is akin to the standard form of the fluctuation relation (for forward-backward dynamics). We also argue that the probability of the violation of the second law of thermodynamics in the form of the Clausius statement (i.e., net heat transfer from a cold system to its hot bath) drops exponentially with both the amount of heat and the temperature differences of the baths.
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Affiliation(s)
- M Ramezani
- Department of Physics, Sharif University of Technology, Tehran 14588, Iran.,School of Physics, Institute for Research in Fundamental Sciences (IPM), Tehran 19395, Iran
| | - M Golshani
- Department of Physics, Sharif University of Technology, Tehran 14588, Iran.,School of Physics, Institute for Research in Fundamental Sciences (IPM), Tehran 19395, Iran
| | - A T Rezakhani
- Department of Physics, Sharif University of Technology, Tehran 14588, Iran
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15
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Darbandi N, Ramezani M, Noori M. Mespilus germanica Flavonoids Attenuate Cognitive Dysfunction in the Streptozotocin-induced Rat Model of Alzheimer's Disease. Indian J Pharm Sci 2018. [DOI: 10.4172/pharmaceutical-sciences.1000406] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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16
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Auclair-Ouellet N, Hanganu A, Kibreab M, Alrazi T, Ramezani M, Sarna J, Monchi O. Sentence Comprehension and Action Fluency: Utility as Markers of Mild Cognitive Impairment in Parkinson’s Disease. Front Hum Neurosci 2018. [DOI: 10.3389/conf.fnhum.2018.228.00068] [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: 11/13/2022] Open
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17
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Tabatabaei M, Mosaffa N, Ghods R, Nikoo S, Kazemnejad S, Khanmohammadi M, Mirzadegan E, Mahmoudi AR, Bolouri MR, Falak R, Keshavarzi B, Ramezani M, Zarnani AH. Vaccination with human amniotic epithelial cells confer effective protection in a murine model of Colon adenocarcinoma. Int J Cancer 2017; 142:1453-1466. [PMID: 29139122 DOI: 10.1002/ijc.31159] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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: 03/03/2017] [Revised: 09/21/2017] [Accepted: 10/19/2017] [Indexed: 12/16/2022]
Abstract
As a prophylactic cancer vaccine, human amniotic membrane epithelial cells (hAECs) conferred effective protection in a murine model of colon cancer. The immunized mice mounted strong cross-protective CTL and antibody responses. Tumor burden was significantly reduced in tumor-bearing mice after immunization with hAECs. Placental cancer immunotherapy could be a promising approach for primary prevention of cancer. In spite of being the star of therapeutic strategies for cancer treatment, the results of immunotherapeutic approaches are still far from expectations. In this regard, primary prevention of cancer using prophylactic cancer vaccines has gained considerable attention. The immunologic similarities between cancer development and placentation have helped researchers to unravel molecular mechanisms responsible for carcinogenesis and to take advantage of stem cells from reproductive organs to elicit robust anti-cancer immune responses. Here, we showed that vaccination of mice with human amniotic membrane epithelial cells (hAECs) conferred effective protection against colon cancer and led to expansion of systemic and splenic cytotoxic T cell population and induction of cross-protective cytotoxic responses against tumor cells. Vaccinated mice mounted tumor-specific Th1 responses and produced cross-reactive antibodies against cell surface markers of cancer cells. Tumor burden was also significantly reduced in tumor-bearing mice immunized with hAECs. Our findings pave the way for potential future application of hAECs as an effective prophylactic cancer vaccine.
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Affiliation(s)
- M Tabatabaei
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - N Mosaffa
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - R Ghods
- Oncopathology Research Center, Iran University of Medical Sciences, Tehran, Iran.,Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - S Nikoo
- Immunology Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - S Kazemnejad
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - M Khanmohammadi
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - E Mirzadegan
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - A R Mahmoudi
- Immunology Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - M R Bolouri
- Immunology Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - R Falak
- Immunology Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - B Keshavarzi
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - M Ramezani
- Department of Biochemistry, School of Medicine, Ardabil University of Medical Science, Ardabil, Iran
| | - A H Zarnani
- Immunology Research Center, Iran University of Medical Sciences, Tehran, Iran.,Reproductive Immunology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
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18
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Babaei M, Eshghi H, Abnous K, Rahimizadeh M, Ramezani M. Promising gene delivery system based on polyethylenimine-modified silica nanoparticles. Cancer Gene Ther 2017; 24:156-164. [PMID: 28128214 DOI: 10.1038/cgt.2016.73] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 09/24/2016] [Indexed: 01/04/2023]
Abstract
This article reports on the synthesis and full characterization of innovative silica-based nanoparticle composed of fumed silica as a core decorated with polyethylenimine (PEI) with different molecular weights (25, 10 and 1.8 kDa). Wide range of analytical, spectroscopic, and microscopic methods (TEM, DLS, ζ potential, elemental analysis (EA), TNBS and FTIR) were used to characterize the nanoparticles. Furthermore, transfection efficiency of these nanoparticles as non-viral vector was examined. The silica-PEI conjugates retained both the ability of PEI to fully condense plasmid DNA at low N/P ratios and suitable buffering capacity at the endosomal pH range. PEI-functionalized silica remarkably enhanced EGFP-N1 gene expression in murine neuroblastoma (Neuro-2A) cells up to 38 folds compared to PEI 25 kDa. Meanwhile the results of the cytotoxicity assays indicated that these silica-PEI conjugates have acceptable level of viability.
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Affiliation(s)
- M Babaei
- Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran
| | - H Eshghi
- Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Kh Abnous
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - M Rahimizadeh
- Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran
| | - M Ramezani
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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19
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Ran C, Brodin L, Forsgren L, Westerlund M, Ramezani M, Gellhaar S, Xiang F, Fardell C, Nissbrandt H, Söderkvist P, Puschmann A, Ygland E, Olson L, Willows T, Johansson A, Sydow O, Wirdefeldt K, Galter D, Svenningsson P, Belin AC. Strong association between glucocerebrosidase mutations and Parkinson's disease in Sweden. Neurobiol Aging 2016; 45:212.e5-212.e11. [PMID: 27255555 PMCID: PMC4982543 DOI: 10.1016/j.neurobiolaging.2016.04.022] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [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: 02/08/2016] [Revised: 04/06/2016] [Accepted: 04/26/2016] [Indexed: 01/14/2023]
Abstract
Several genetic studies have demonstrated an association between mutations in glucocerebrosidase (GBA), originally implicated in Gaucher's disease, and an increased risk of Parkinson's disease (PD). We have investigated the possible involvement of genetic GBA variations in PD in the Swedish population. Three GBA variants, E326K, N370S, and L444P were screened in the largest Swedish Parkinson cohort reported to date; 1625 cases and 2025 control individuals. We found a significant association with high effect size of the rare variant L444P with PD (odds ratio 8.17; 95% confidence interval: 2.51-26.23; p-value = 0.0020) and a significant association of the common variant E326K (odds ratio 1.60; 95% confidence interval: 1.16-2.22; p-value = 0.026). The rare variant N370S showed a trend for association. Most L444P carriers (68%) were found to reside in northern Sweden, which is consistent with a higher prevalence of Gaucher's disease in this part of the country. Our findings support the role of GBA mutations as risk factors for PD and point to lysosomal dysfunction as a mechanism contributing to PD etiology.
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Affiliation(s)
- Caroline Ran
- Department of Neuroscience, Karolinska Institutet, Solna, Sweden
| | - Lovisa Brodin
- Department of Clinical Neuroscience, Karolinska University Hospital, Stockholm, Sweden
| | - Lars Forsgren
- Department of Pharmacology and Clinical Neuroscience, Umeå University, Umeå, Sweden
| | - Marie Westerlund
- Department of Neuroscience, Karolinska Institutet, Solna, Sweden; Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden
| | | | - Sandra Gellhaar
- Department of Neuroscience, Karolinska Institutet, Solna, Sweden
| | - Fengqing Xiang
- Department of Women's and Children's Health, Karolinska University Hospital, Stockholm, Sweden
| | - Camilla Fardell
- Department of Pharmacology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Hans Nissbrandt
- Department of Pharmacology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Peter Söderkvist
- Faculty of Health Sciences, Division of Cell Biology, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Andreas Puschmann
- Department of Neurology, Skåne University Hospital, Lund, Sweden; Department of Clinical Sciences Lund, Neurology, Skane University Hospital, Lund University, Lund, Sweden
| | - Emil Ygland
- Department of Clinical Sciences Lund, Neurology, Skane University Hospital, Lund University, Lund, Sweden
| | - Lars Olson
- Department of Neuroscience, Karolinska Institutet, Solna, Sweden
| | - Thomas Willows
- Department of Clinical Neuroscience, Karolinska University Hospital, Stockholm, Sweden
| | - Anders Johansson
- Department of Clinical Neuroscience, Karolinska University Hospital, Stockholm, Sweden
| | - Olof Sydow
- Department of Clinical Neuroscience, Karolinska University Hospital, Stockholm, Sweden
| | - Karin Wirdefeldt
- Department of Clinical Neuroscience, Karolinska University Hospital, Stockholm, Sweden; Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Dagmar Galter
- Department of Neuroscience, Karolinska Institutet, Solna, Sweden
| | - Per Svenningsson
- Department of Clinical Neuroscience, Karolinska University Hospital, Stockholm, Sweden
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20
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Mohammadzadeh A, Ramezani M, Ghaedi A. Synthesis and characterization of Fe2O3–ZnO–ZnFe2O4/carbon nanocomposite and its application to removal of bromophenol blue dye using ultrasonic assisted method: Optimization by response surface methodology and genetic algorithm. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2015.07.034] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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Pourtaji A, Robati RY, Lari P, Hosseinzadeh H, Ramezani M, Abnous K. Proteomics screening of adenosine triphosphate-interacting proteins in the liver of diazinon-treated rats. Hum Exp Toxicol 2015; 35:1084-92. [PMID: 26721910 DOI: 10.1177/0960327115619771] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
AIM Diazinon (DZN) is one of the most important organophosphorus compounds used to control pests in agriculture in many countries. Several studies have shown that exposure to DZN may alter protein expression in the liver. In order to further investigate the mechanism of DZN toxicity, differentially expressed ATP-interacting proteins, following subacute exposure to toxin, were separated and identified in rat liver. MAIN METHODS Male rats were equally divided into four groups: control (corn oil) and DZN (15 mg/kg) by gavage once a day for 4 weeks. After homogenization of liver tissue, lysates were incubated ATP-sepharose beads. After several washes, ATP-interacting proteins were eluted and separated on 2-D polyacrylamide gels. Deferentially expressed proteins were cut and identified using matrix-assisted laser desorption/ionization/time-of-flight and Mascot database. Identified proteins were classified according to their biological process using protein analysis through evolutionary relationships (PANTHER) Web site. KEY FINDING In this work, we showed that several key proteins involved in biological processes such as antioxidant system, oxidative stress, apoptosis, and metabolism were differentially expressed after subacute exposure to DZN.
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Affiliation(s)
- A Pourtaji
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - R Yazdian Robati
- Department of Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - P Lari
- Department of Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - H Hosseinzadeh
- Pharmaceutical Research Center, Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - M Ramezani
- Nanotechnology Research Center, Department of Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - K Abnous
- Pharmaceutical Research Center, Department of Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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22
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Niazi A, Habibi S, Ramezani M. Preconcentration and simultaneous spectrophotometric determination of copper and mercury by dispersive liquid–liquid microextraction and orthogonal signal correction–partial least squares. ARAB J CHEM 2015. [DOI: 10.1016/j.arabjc.2013.12.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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23
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Khansarizadeh M, Mokhtarzadeh A, Rashedinia M, Taghdisi SM, Lari P, Abnous KH, Ramezani M. Identification of possible cytotoxicity mechanism of polyethylenimine by proteomics analysis. Hum Exp Toxicol 2015; 35:377-87. [PMID: 26134983 DOI: 10.1177/0960327115591371] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Polyethylenimine (PEI) is a polycation widely used for successful gene delivery both in vitro and in vivo experiments. However, different studies showed that PEI could be cytotoxic to transfected cells, and the mechanism of toxicity is poorly understood. Identification of PEI-interacting proteins may help in understanding the toxicity pathways. In this study, we investigated proteins that could interact with PEI in human colorectal adenocarcinoma cells (HT29). In order to identify the proteins interacting with PEI, PEI was immobilized to sepharose beads as solid matrix. The HT29 cell lysate were passed through the matrix. PEI-bound proteins were isolated, and further separation was performed by two-dimensional gel electrophoresis. After gel digestion, proteins were identified by matrix-assisted laser desorption/ionization-time-of-flight (TOF)/TOF mass spectrometry. Our data indicated that most of the identified PEI-interacting proteins such as shock proteins, glutathione-S-transferases, and protein disulfide isomerase are involved in apoptosis process in cells. Thus, although this is a preliminary experiment implicating the involvement of some proteins in PEI cytotoxicity, it could partly explain the mechanism of PEI cytotoxicity in cells.
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Affiliation(s)
- M Khansarizadeh
- Nanotechnology Research Center, Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - A Mokhtarzadeh
- School of Medicine, Gonabad University of Medical Sciences, Gonabad, Iran Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - M Rashedinia
- Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - S M Taghdisi
- Targeted Drug Delivery Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - P Lari
- Department of Pharmacodynamy and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - K H Abnous
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - M Ramezani
- Nanotechnology Research Center, Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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24
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Fotouhi A, Cornella N, Ramezani M, Wojcik A, Haghdoost S. Investigation of micronucleus induction in MTH1 knockdown cells exposed to UVA, UVB or UVC. Mutat Res Genet Toxicol Environ Mutagen 2015; 793:161-5. [PMID: 26520386 DOI: 10.1016/j.mrgentox.2015.06.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 06/03/2015] [Indexed: 11/17/2022]
Abstract
The longer wave parts of UVR can increase the production of reactive oxygen species (ROS) which can oxidize nucleotides in the DNA or in the nucleotide pool leading to mutations. Oxidized bases in the DNA are repaired mainly by the DNA base excision repair system and incorporation of oxidized nucleotides into newly synthesized DNA can be prevented by the enzyme MTH1. Here we hypothesize that the formation of several oxidized base damages (from pool and DNA) in close proximity, would cause a high number of base excision repair events, leading to DNA double strand breaks (DSB) and therefore giving rise to cytogenetic damage. If this hypothesis is true, cells with low levels of MTH1 will show higher cytogenetic damage after the longer wave parts of UVR. We analyzed micronuclei induction (MN) as an endpoint for cytogenetic damage in the human lymphoblastoid cell line, TK6, with a normal and a reduced level of MTH1 exposed to UVR. The results indicate a higher level of micronuclei at all incubation times after exposure to the longer wave parts of UVR. There is no significant difference between wildtype and MTH1-knockdown TK6 cells, indicating that MTH1 has no protective role in UVR-induced cytogenetic damage. This indicates that DSBs induced by UV arise from damage forms by direct interaction of UV or ROS with the DNA rather than through oxidation of dNTP.
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Affiliation(s)
- Asal Fotouhi
- Center for Radiation Protection Research, Department of Molecular Biosciences, Wenner-Gren Institute, Stockholm University, Sweden
| | - Nicola Cornella
- Center for Radiation Protection Research, Department of Molecular Biosciences, Wenner-Gren Institute, Stockholm University, Sweden
| | - Mehrafarin Ramezani
- Center for Radiation Protection Research, Department of Molecular Biosciences, Wenner-Gren Institute, Stockholm University, Sweden
| | - Andrzej Wojcik
- Center for Radiation Protection Research, Department of Molecular Biosciences, Wenner-Gren Institute, Stockholm University, Sweden
| | - Siamak Haghdoost
- Center for Radiation Protection Research, Department of Molecular Biosciences, Wenner-Gren Institute, Stockholm University, Sweden.
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25
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Ramezani M, Marble K, Trang H, Johnsrude IS, Abolmaesumi P. Joint sparse representation of brain activity patterns in multi-task fMRI data. IEEE Trans Med Imaging 2015; 34:2-12. [PMID: 25073167 DOI: 10.1109/tmi.2014.2340816] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A single-task functional magnetic resonance imaging (fMRI) experiment may only partially highlight alterations to functional brain networks affected by a particular disorder. Multivariate analysis across multiple fMRI tasks may increase the sensitivity of fMRI-based diagnosis. Prior research using multi-task analysis in fMRI, such as those that use joint independent component analysis (jICA), has mainly assumed that brain activity patterns evoked by different tasks are independent. This may not be valid in practice. Here, we use sparsity, which is a natural characteristic of fMRI data in the spatial domain, and propose a joint sparse representation analysis (jSRA) method to identify common information across different functional subtraction (contrast) images in data from a multi-task fMRI experiment. Sparse representation methods do not require independence, or that the brain activity patterns be nonoverlapping. We use functional subtraction images within the joint sparse representation analysis to generate joint activation sources and their corresponding sparse modulation profiles. We evaluate the use of sparse representation analysis to capture individual differences with simulated fMRI data and with experimental fMRI data. The experimental fMRI data was acquired from 16 young (age: 19-26) and 16 older (age: 57-73) adults obtained from multiple speech comprehension tasks within subjects, where an independent measure (namely, age in years) can be used to differentiate between groups. Simulation results show that this method yields greater sensitivity, precision, and higher Jaccard indexes (which measures similarity and diversity of the true and estimated brain activation sources) than does the jICA method. Moreover, superiority of the jSRA method in capturing individual differences was successfully demonstrated using experimental fMRI data.
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26
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Razavi BM, Hosseinzadeh H, Imenshahidi M, Malekian M, Ramezani M, Abnous K. Evaluation of Protein Ubiquitylation in Heart Tissue of Rats Exposed to Diazinon (an Organophosphate Insecticide) and Crocin (an Active Saffron Ingredient): Role of HIF-1α. Drug Res (Stuttg) 2014; 65:561-6. [PMID: 25368905 DOI: 10.1055/s-0034-1384533] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
INTRODUCTION Organophosphate compounds, such as diazinon (DZN), are widely used in agriculture and can lead to formation of reactive oxygen species (ROS) in cardiovascular system. ROS are highly toxic since they can cause serious changes in proteins including ubiquitylation. Crocin (a carotenoid isolated from saffron), has protective effects against DZN cardiotoxicity. In this study level of total protein ubiquitylation as markers of oxidative stress and level of ubiquitin-HIF-1α and P53, known substrates of ubiquitylation, in rat hearts exposed to DZN and crocin were evaluated. METHODS Rats were divided into 7 groups: corn oil (control), DZN (15 mg/kg/day, gavage), crocin (12.5, 25, 50 mg/kg/day, i. p.) plus DZN, vitamin E (200 IU/kg, i. p., 3 days a week) plus DZN and crocin (50 mg/kg/day, i. p.). Treatments were continued for 4 weeks. Total protein ubiquitylation, total HIF-1α and P53 were analyzed by western blotting. Total HIF-1α and P53 were purified by immunoprecipitation (IP) and ubiquitin- HIF-1α and P53 were analyzed by western blotting. RESULTS Higher protein ubiquitylation levels were observed in DZN treated rats. Decrease in ubiquitin-HIF-1α was also shown, and leads to higher HIF-1α protein levels in DZN group. Crocin (50 mg/kg) and vit. E protected cells against DZN protein ubiquitylation. Significant differences were not observed between the ubiquitin - P53 and total P53 protein levels. CONCLUSION Our results showed that ubiquitylation could be considered as a marker of oxidative stress in rats exposed to DZN. Increase in level of HIF-α may compensate adverse effect of DNZ in rat heart.
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Affiliation(s)
- B M Razavi
- Targeted Drug Delivery Research Center, Department of Pharmacodinamy and Toxicology, Mashhad University of Medical Sciences, Mashhad, Iran
| | - H Hosseinzadeh
- Pharmaceutical Research Center, Department of Pharmacodinamy and Toxicology, Mashhad University of Medical Sciences, Mashhad, Iran
| | - M Imenshahidi
- Targeted Drug Delivery Research Center, Department of Pharmacodinamy and Toxicology, Mashhad University of Medical Sciences, Mashhad, Iran
| | - M Malekian
- Targeted Drug Delivery Research Center, Department of Pharmacodinamy and Toxicology, Mashhad University of Medical Sciences, Mashhad, Iran
| | - M Ramezani
- Nanotechnology Research Center, Department of Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - K Abnous
- Pharmaceutical Research Center, Department of Medicinal Chemistry, Mashhad University of Medical Sciences, Mashhad, Iran
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Lozano G, Grzela G, Verschuuren MA, Ramezani M, Rivas JG. Tailor-made directional emission in nanoimprinted plasmonic-based light-emitting devices. Nanoscale 2014; 6:9223-9. [PMID: 24981706 DOI: 10.1039/c4nr01391c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We demonstrate an enhanced and tailor-made directional emission of light-emitting devices using nanoimprinted hexagonal arrays of aluminum nanoparticles. Fourier microscopy reveals that the luminescence of the device is not only determined by the material properties of the organic dye molecules but is also strongly influenced by the coherent scattering resulting from periodically arranged metal nanoparticles. Emitters can couple to lattice-induced hybrid plasmonic-photonic modes sustained by plasmonic arrays. Such modes enhance the spatial coherence of an emitting layer, allowing the efficient beaming of the emission along narrow angular and spectral ranges. We show that tailoring the separation of the nanoparticles in the array yields an accurate angular distribution of the emission. This combination of large-area metal nanostructures fabricated by nanoimprint lithography and light-emitting devices is beneficial for the design and optimization of solid-state lighting systems.
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Affiliation(s)
- G Lozano
- Center for Nanophotonics, FOM Institute AMOLF. c/o Philips Research, High-Tech Campus 4, 5656 AE, Eindhoven, The Netherlands
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Abstract
BACKGROUND Around the world, spiritual care in nursing is a critical part of providing holistic care, but within our profession, there is a lack of certainty over the meaning of spirituality and delivery of spiritual care, including nurses thinking of spirituality as religion. METHODS We adopted the eight-step Walker and Avant's concept analysis approach to provide a definition of the concept, searching and analysing international and national online databases. Inclusion criterion included that articles were published between 1950 and 2012 in English or Persian language. Finally, 151 articles and 7 books were included in the analysis. FINDINGS The attributes of spiritual care are healing presence, therapeutic use of self, intuitive sense, exploration of the spiritual perspective, patient-centredness, meaning-centred therapeutic intervention and creation of a spiritually nurturing environment. Spiritual care is a subjective and dynamic concept, a unique aspect of care that integrates all the other aspects. It emerges in the context of nurses' awareness of the transcendent dimension of life and reflects a patient's reality. The provision of spiritual care leads to positive consequences such as healing for patients and promotion of spiritual awareness for nurses. IMPLICATIONS FOR NURSING AND HEALTH POLICY The conceptual definition of spiritual care provided in this study can help clinical nurses, educators and nurse managers to develop and implement evidence-based health policies, comprehensive staff training programmes and practical quality assessment guidelines to try to ensure that all nurses are competent to include relevant spiritual care in practice. CONCLUSION A comprehensive definition of the concept of spiritual care ensued. The findings can facilitate further development of nursing knowledge and practice in spiritual care and facilitate correction of common misconceptions about the provision of spiritual care.
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Affiliation(s)
- M Ramezani
- Department of Nursing, Tarbiat Modares University, Tehran, Iran
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29
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Khodadoust S, Mohammadzadeh A, Mohammadi J, Irajie C, Ramezani M. Identification and determination of the fatty acid composition of Quercus brantii growing in southwestern Iran by GC-MS. Nat Prod Res 2014; 28:573-6. [PMID: 24499169 DOI: 10.1080/14786419.2014.880915] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
This article reports the fatty acid composition of the oil extracts from Quercus brantii fruits growing in Kohgiloye va Boyer Ahmad province in southwestern Iran. The oil from Q. brantii fruits was extracted with hexane in Soxhlet apparatus and subsequently identified and determined by using gas chromatography-mass spectroscopy. The results revealed that the major fatty acids were oleic acid (52.99-66.14%), linoleic acid (10.80-11.11%), palmitic acid (8.08-10.06%), stearic acid (0.74-1.57%), α-linolenic acid (0.19-0.35%), erucic acid (0.12-0.15%) and arachidic acid (0.12-0.13%). The total proportion of unsaturated and saturated oil was 64.60-77.27% and 9.17-11.75%, respectively. Results indicate that the fruits of Q. brantii contained 0.19-0.35% omega-3, 10.92-14.77% omega-6 and 53.14-66.26% omega-9. Therefore, Q. brantii can be introduced as rich sources of fatty acid in food dietary and medical health.
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Affiliation(s)
- S Khodadoust
- a Medicinal Plants Research Center, Yasuj University of Medical Science , Yasuj , Iran
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30
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Ramezani M, Abolmaesumi P, Marble K, MacDonald H, Johnsrude I. Classification of individuals based on sparse representation of brain cognitive patterns: a functional MRI study. Annu Int Conf IEEE Eng Med Biol Soc 2013; 2012:2688-91. [PMID: 23366479 DOI: 10.1109/embc.2012.6346518] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Many neurological disorders can change patterns of brain activity observed in functional imaging studies. These functional differences may be useful for classification of individuals into diagnostic categories. However, due to the high dimensionality of the input feature space and small set of subjects that are usually available, classification based on fMRI data is not trivial. Here, we evaluate the use of a Sparse Representation Analysis method within a Fisher Linear Discriminant (FLD) classification method, taking functional patterns characteristic of different cognitive tasks as the data input. As a test dataset, with a clear 'gold-standard' classification, we attempt to classify individuals as young, or older, based only on functional activation patterns in a speech listening task. Thirty two young (age: 19-26) and older (age: 57-73) adults (16 each) were scanned while listening to noise and to sentences degraded with noise, half of which contained meaningful context that could be used to enhance intelligibility. Different functional contrast images were used within K-SVD to generate basis activation sources and their corresponding sparse modulation profiles. Sparse modulation profiles were used in a FLD framework to classify individuals into the young and older categories. The results demonstrate the feasibility of the general approach, and confirm the potential applicability of the proposed method for real-world diagnostic problems.
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Affiliation(s)
- M Ramezani
- Department of Electrical and Computer Engineering, The University of British Columbia, Vancouver, BC, Canada.
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31
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Khani H, Majdi M, Marzabadi EA, Montazeri A, Ghorbani A, Ramezani M. Quality of life of Iranian β-thalassaemia major patients living on the southern coast of the Caspian Sea. East Mediterr Health J 2012; 18:539-45. [DOI: 10.26719/2012.18.5.539] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Makhdoumi-Kakhki A, Amoozegar MA, Bagheri M, Ramezani M, Ventosa A. Haloarchaeobius iranensis gen. nov., sp. nov., an extremely halophilic archaeon isolated from a saline lake. Int J Syst Evol Microbiol 2012; 62:1021-1026. [DOI: 10.1099/ijs.0.033167-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Strain EB21T was isolated from a brine sample from Aran-Bidgol salt lake, a saline playa in Iran. Strain EB21T was an orange–red-pigmented, motile rod and required at least 2 M NaCl but not MgCl2 for growth. Optimal growth was achieved at 3.5 M NaCl and 0.2 M MgCl2. The optimum pH and temperature for growth were pH 7.5 and 40 °C, while it was able to grow at pH 6.0–8.0 and 25–55 °C. Analysis of the 16S rRNA gene sequence revealed that strain EB21T is a member of the family
Halobacteriaceae
, showing low levels of similarity to other members of the family. The highest sequence similarities, 91.8, 91.7 and 91.5 %, were obtained with the 16S rRNA gene sequences of the type strains of
Halobiforma lacisalsi
,
Haloterrigena thermotolerans
and
Halalkalicoccus tibetensis
, respectively. Polar lipid analyses revealed that strain EB21T contains phosphatidylglycerol, phosphatidylglycerol phosphate methyl ester and phosphatidylglycerol sulfate. Three unidentified glycolipids and one minor phospholipid were also observed. The only quinone present was MK-8(II-H2). The G+C content of its DNA was 67.7 mol%. On the basis of the data obtained, the new isolate could not be classified in any recognized genus. Strain EB21T is thus considered to represent a novel species in a new genus within the family
Halobacteriaceae
, order
Halobacteriales
, for which the name Haloarchaeobius iranensis gen. nov., sp. nov. is proposed. The type strain of Haloarchaeobius iranensis is EB21T ( = IBRC-M 10013T = KCTC 4048T).
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Affiliation(s)
- A. Makhdoumi-Kakhki
- Extremophile Laboratory, Department of Microbiology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - M. A. Amoozegar
- Microorganisms Bank, Iranian Biological Resource Centre (IBRC), ACECR Tehran, Iran
- Extremophile Laboratory, Department of Microbiology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - M. Bagheri
- Microorganisms Bank, Iranian Biological Resource Centre (IBRC), ACECR Tehran, Iran
| | - M. Ramezani
- Microorganisms Bank, Iranian Biological Resource Centre (IBRC), ACECR Tehran, Iran
| | - A. Ventosa
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Sevilla, Spain
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Abstract
There are several strategies that can be utilized to improve transfection efficiency while reducing the cytotoxicity of polyethyleneimine (PEI) as a promising non-viral gene delivery vector. In this study, we evaluated the potential use of lysine-histidine (KH) peptides in modifying the PEI 10 kDa structure and enhancing its efficiency while maintaining low toxicity of PEI. PEI 10 kDa was modified with 6-bromohexanoic acid (alkyl) to increase its lipophilicity. Then, ethylenediamine (EDA) was attached to the carboxylic groups of PEI-hexanoate to restore the primary amines of PEI. Subsequently, six different KH short peptides were conjugated to PEIs and evaluated for the effect of the KH sequence on vector transfection efficiency and cytotoxicity. The transfection efficiency of PEI-peptides complexed with a luciferase reporter gene (pRLCMV) in Neuro-2A murine neuroblastoma cells showed that the PEI conjugated to KHHHKKHHHK peptide had a significantly higher rate of gene transfection efficiency in comparison with other KH peptides. This peptide was conjugated to PEI-alkyl and PEI-alkyl-EDA and significant improvement in efficiency with minimal cytotoxicity was observed. The results obtained suggest that the sequence and content of KH peptides will have a significant impact on the transfection efficiency of modified PEI 10 kDa.
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Affiliation(s)
- M Hashemi
- Pharmaceutical and Biotechnology Research Centers, Mashhad University of Medical Sciences, Iran
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Khalili M, Adib M, Ramezani M. Cryopreservation of human spermatozoa by vitrification: impacts on sperm parameters and apoptosis. Fertil Steril 2010. [DOI: 10.1016/j.fertnstert.2010.07.447] [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: 10/19/2022]
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35
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Azizi E, Namazi A, Kaabinejadian S, Fouladdel S, Rezaei P, Ramezani M. Molecular analysis of MEN1 expression in MCF7, T47D and MDA-MB 468 breast cancer cell lines treated with adriamycin using RT-PCR and immunocytochemistry. Daru 2010; 18:17-22. [PMID: 22615588 PMCID: PMC3232087] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2009] [Revised: 02/06/2010] [Accepted: 02/10/2010] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND AND THE PURPOSE OF THE STUDY MEN1 is an important tumor suppressor gene that encodes a nuclear protein called menin. Recent data suggest that interactions between menin and other proteins have important roles in control of the cell cycle and apoptosis. In addition, estrogen receptor (ER), an important prognostic factor is differentially expressed in breast cancer cells. In this study the MEN1 gene and protein expression in MCF7, T47D and MDA-MB-468 breast cancer cell lines with different ER status following exposure to adriamycin (ADR) was investigated. MATERIALS AND METHODS Cytotoxicity of ADR on these cell lines was determined using MTT assay. The mRNA and protein levels were analyzed in tested cell lines using RT-PCR and immunocytochemistry (ICC) assays, respectively. RESULTS ADR cytotoxicity was highest on MDA-MB-468 and lowest on MCF7 cells. MEN1 mRNA showed significant decrease after ADR exposure only in the MDA-MB-468 cell line. Menin protein expression was higher in MDA-MB-468 and lower in MCF7 cells. CONCLUSION Differential molecular responses to adriamycin were observed in cancer cell lines. Molecular data also suggest that MEN1 as a new biomarker can be used in combination with current biomarkers for prediction of response to chemotherapy.
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Affiliation(s)
- E. Azizi
- Molecular Research Lab., Department of Pharmacology and Toxicology, Faculty of Pharmacy,Department of Medical Biotechnology, School of Advanced Medical Technologies, Tehran University of Medical Sciences,Correspondence:
| | - A. Namazi
- Molecular Research Lab., Department of Pharmacology and Toxicology, Faculty of Pharmacy
| | - S. Kaabinejadian
- Molecular Research Lab., Department of Pharmacology and Toxicology, Faculty of Pharmacy,Department of Biotechnology, Faculty of Pharmacy, Mashad University of Medical Sciences, Mashad
| | - Sh. Fouladdel
- Molecular Research Lab., Department of Pharmacology and Toxicology, Faculty of Pharmacy
| | - P. Rezaei
- Molecular Research Lab., Department of Pharmacology and Toxicology, Faculty of Pharmacy,Department of Biochemistry, IBB, Tehran University, Iran
| | - M. Ramezani
- Department of Biotechnology, Faculty of Pharmacy, Mashad University of Medical Sciences, Mashad
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Sánchez-Porro C, Amoozegar MA, Fernandez AB, Babavalian Fard H, Ramezani M, Ventosa A. Lentibacillus persicus sp. nov., a moderately halophilic species isolated from a saline lake. Int J Syst Evol Microbiol 2009; 60:1407-1412. [PMID: 19671718 DOI: 10.1099/ijs.0.015396-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-staining-positive, moderately halophilic bacterium, designated strain Amb31(T), was isolated from water of the hypersaline lake Aran-Bidgol in Iran and characterized taxonomically using a polyphasic approach. Cells were rods, motile and able to produce ellipsoidal endospores at a central position in swollen sporangia. Strain Amb31(T) was facultatively anaerobic and catalase- and oxidase-positive. The strain grew in a complex medium supplemented with 3-25 % (w/v) NaCl (optimum 7.5-10 %). Optimal growth was at 30-35 degrees C and pH 7.5. Phylogenetic analysis based on 16S rRNA gene sequence comparisons showed that strain Amb31(T) belonged to the genus Lentibacillus; it exhibited 16S rRNA gene sequence similarity values of 96.8 and 96.4 % to Lentibacillus salicampi SF-20(T) and Lentibacillus salinarum AHS-1(T), respectively, and values of 95.9-94.7 % to the type strains of other recognized species of Lentibacillus. The cell-wall peptidoglycan of strain Amb31(T) was based on meso-diaminopimelic acid and MK-7 was the respiratory isoprenoid quinone. The major fatty acids were anteiso-C(15 : 0) (44.7 %), iso-C(16 : 0) (21.4 %) and anteiso-C(17 : 0) (15.9 %) and the polar lipid pattern consisted of phosphatidylglycerol, diphosphatidylglycerol, five phospholipids and a glycolipid. The DNA G+C content was 44.1 mol%. All these features confirmed the placement of strain Amb31(T) within the genus Lentibacillus and the strain could be clearly differentiated from strains of the other species of Lentibacillus on the basis of several phenotypic, genotypic and chemotaxonomic features. DNA-DNA relatedness with the type strain of the most closely related strain, L. salicampi DSM 16425(T), was 28 %. Therefore, strain Amb31(T) represents a novel species of the genus Lentibacillus, for which the name Lentibacillus persicus sp. nov. is proposed. The type strain is Amb31(T) (=CCM 7683(T) =CECT 7524(T) =DSM 22530(T) =LMG 25304(T)).
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Affiliation(s)
- C Sánchez-Porro
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Sevilla, 41012 Sevilla, Spain
| | - M A Amoozegar
- Extremophiles Laboratory, Department of Microbiology, Faculty of Biology, College of Science, University of Tehran, Tehran, Iran
| | - A B Fernandez
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Sevilla, 41012 Sevilla, Spain
| | - H Babavalian Fard
- Extremophiles Laboratory, Department of Microbiology, Faculty of Biology, College of Science, University of Tehran, Tehran, Iran
| | - M Ramezani
- Extremophiles Laboratory, Department of Microbiology, Faculty of Biology, College of Science, University of Tehran, Tehran, Iran
| | - A Ventosa
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Sevilla, 41012 Sevilla, Spain
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Gholamrezanezhad A, Ramezani M, Mirpour S, Fallahi B, Ansari-Gilani K, Jabbari F. Characteristic features of pneumothorax on lung perfusion scan. Rev Esp Med Nucl 2008; 27:283. [PMID: 18682158 DOI: 10.1157/13124641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- A Gholamrezanezhad
- Research Institute for Nuclear Medicine, Medical Sciences/Tehran University, Tehran, Iran.
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39
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Kaabinejad S, Fouladdel S, Ramezani M, Azizi E. p53 Expression in MCF7, T47D and MDA-MB 468 Breast Cancer Cell Lines Treated with Adriamycin Using RT-PCR and Immunocytochemistry. ACTA ACUST UNITED AC 2008. [DOI: 10.3923/jbs.2008.380.385] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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40
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Ramezani M, Ghoddousi K, Hashemi M, Khoddami-Vishte HR, Fatemi-Zadeh S, Saadat SH, Khedmat H, Naderi M. Diabetes as the cause of end-stage renal disease affects the pattern of post kidney transplant rehospitalizations. Transplant Proc 2007; 39:966-9. [PMID: 17524864 DOI: 10.1016/j.transproceed.2007.03.074] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [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: 01/16/2023]
Abstract
INTRODUCTION Although there are reports that link diabetes-induced end-stage renal disease (ESRD) with several post renal transplantation complications and conditions, few studies have directly focused on this issue. This study compared the pattern of rehospitalizations after renal transplantation among diabetic versus nondiabetic ESRD patients, measuring causes, length of stay, outcomes and costs. METHODS We retrospectively reviewed 366 randomly selected rehospitalization records of kidney transplant recipients between 1994 and 2006, including 69 who underwent renal transplantation due to diabetic nephropathy and 297, due to nondiabetic ESRD. We compared the two groups with respect to demographic and clinical variables: donor source, readmission pattern, rehospitalization cause, time interval between transplantation and hospitalization (T-H time), length of hospital stay (LOS), and intensive care unit (ICU) admission, hospital charges, and inpatient outcomes of graft loss and mortality. RESULTS The diabetes group, compared with nondiabetic group, had a greater mean age (53 +/- SD vs. 39 +/- SD years), proportion of admissions due to infections (44.9% vs. 32%) or renal dysfunction (14.5% vs. 29.6%), mean hospital charges ($5056 vs. $3046), and hospital mortality (18% vs. 4.3%; P<.05). Diabetic patients were readmitted sooner after transplantation than nondiabetic patients (11 vs. 18 months; P<.05). There was no difference between the groups with regard to gender, donor source, LOS, ICU admission, and graft loss. CONCLUSION The etiology of ESRD should be considered for scheduling post renal transplantation follow-up. Renal transplant recipients with diabetes-induced ESRD need further attention in follow-up programs.
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Affiliation(s)
- M Ramezani
- Nephrology/Urology Research Center (NURC), Baqiyatallah Medical Sciences University, Tehran, Iran
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41
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Ramezani M, Einollahi B, Ahmadzad-Asl M, Nafar M, Pourfarziani V, Samadpour A, Moradi M, Alghasi M, Chalian H, Davoudi F. Hyperlipidemia After Renal Transplantation and Its Relation to Graft and Patient Survival. Transplant Proc 2007; 39:1044-7. [PMID: 17524887 DOI: 10.1016/j.transproceed.2007.03.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [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: 10/23/2022]
Abstract
INTRODUCTION Hyperlipidemia is a multifactorial event that frequently develops following renal transplantation and may worsen the patient's prognosis. The aim of this study was to evaluate the incidence and concomitant factors for hyperlipidemia. METHODS We studied 687 renal transplant recipients from 1988 to 2004 using a cross-sectional design to determine the frequency of hypercholestrolemia and hypertriglyceridemia before and 1 month to 1 year after renal transplantation, to evaluate its relation to patient and graft prognosis in two medical centers in Iran. Cyclosporine was the constant part of immunosuppressive treatment in all study subjects. RESULTS One and 5-year graft survival times were 94.23% and 81.34%, respectively. The prevalence of hypercholestrolemia after transplantation was 59.9%. Mean (+/- 2 SE) serum cholesterol levels before and after transplantation were 161.15 +/- 3.81 and 213.83 +/- 4.53 mg/dL respectively (P=.000). Triglycerides levels, were 159.99 +/- 13.08 and 196.28 +/- 19.6 mg/dL respectively. There was no significant correlation between cyclosporine dose, graft and patient survivals, and severity of hyperlipidemia (determined by cholesterol and triglyceride levels). CONCLUSIONS Lipid metabolism abnormalities observed in this study were similar to other reports. There was no correlation with patient or graft survival. In addition, there may routes for development of hyperlipidemia other than adverse complications of immunosuppressive drugs.
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Affiliation(s)
- M Ramezani
- Department of Internal Medicine, Baqyiatallah University of Medical Sciences, Tehran, Iran
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42
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Ramezani M, Einollahi B, Asl MA, Nafar M, Pourfarziani V, Moradi M, Samadpour A, Alghasi M, Davoudi F. Calcium and Phosphorus Metabolism Disturbances After Renal Transplantation. Transplant Proc 2007; 39:1033-5. [PMID: 17524884 DOI: 10.1016/j.transproceed.2007.03.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [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: 11/24/2022]
Abstract
INTRODUCTION Several studies have noted that, despite beneficial correction of abnormalities of mineral metabolism after successful renal transplantation, renal functional recovery is incomplete. Also, persistence of hyperparathyroidism and metabolic acidosis among patients with chronic impairment of graft function together with the use of loop diuretics and immunosuppressive drugs with adverse effects may alter mineral metabolism. We determined calcium and phosphorus levels in recipients. METHODS This cross-sectional study enrolled 398 recipients in 2 medical centers in Iran from 1988 to 2004 to evaluate serum calcium and phosphorus levels after 1 month in relation to graft and patient survivals. Cyclosporine was the constant part of the immunosuppressive treatment in all study subjects. RESULTS The median follow-up time was 8 months (range, 1-180 months). One and 10-year survival rates of patients were 97.9% and 91.1%. Mean (SD) serum calcium levels before and after transplantation were 8.79 (1.26) and 8.50 (1.39) mg/dL, respectively (P=.020). The mean (SD) phosphate levels before and after transplantation were 6.43 (2.42) and 3.64 (1.71) mg/dL, respectively (P=.000). There was no significant difference in survival considering changes in serum calcium and phosphorus levels. There was no correlation between serum calcium and phosphorus level changes among study patients. CONCLUSIONS Despite reports suggesting hypercalcemia as a posttransplantation finding, we did not observe this condition, but, consistent with other reports in this field, we observed a significant decrease in serum phosphorus levels showing correction of this mineral level.
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Affiliation(s)
- M Ramezani
- Department of Internal Medicine, Baqyiatollah University of Medical Sciences, Tehran, Iran
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43
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Sajadi Tabassi SA, Hosseinzadeh H, Ramezani M, Moghimipour E, Mohajeri SA. Isolation, characterization and study of enhancing effects on nasal absorption of insulin in rat of the total saponin from Acanthophyllum squarrosum. Indian J Pharmacol 2007. [DOI: 10.4103/0253-7613.37272] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Sajadi Tabassi SA, Hosseinzadeh H, Ramezani M, Moghimipour E, Mohajeri SA. Isolation, characterization and study of enhancing effects on nasal absorption of insulin in rat of the total saponin from Acanthophyllum squarrosum. Curr Drug Deliv 2006; 3:399-404. [PMID: 17076642 DOI: 10.2174/156720106778559065] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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: 11/22/2022]
Abstract
OBJECTIVE Isolation of the total saponins from Acanthophyllum squarrosum Boiss. and investigation of its surface activity, haemolytic effects on human erythrocytes as well as enhancing potentials on intranasal insulin absorption in rat in comparison with two other enhancers i.e. Quillaja total saponin (QTS) and sodium cholate (SC). MATERIALS AND METHODS The decrease in blood glucose levels in five fasting rats following nasal administration of regular insulin solutions in the presence or absence of enhancers was determined by glucometric strips and used as an indication of insulin absorption. RESULTS The results showed that ATS decreased surface tension of water to about 50 dyne.cm(-1) and caused complete haemolysis of human RBCs at a concentration of 250 microg.ml(-1). Following the instillation of solutions containing insulin and different absorption enhancers into the right nostril of rats, the percentage decrease in initial blood glucose was as follows: 72.46% (+/- 2.39%) for ATS, 63.22 % (+/-11.06%) for QTS and 60.06% (+/-14.93%) for SC. Percentage lowering in initial blood glucose concentrations against time showed that ATS exhibits a stronger effect than the two other enhancers although the difference was not statistically significant (p>0.05). CONCLUSION ATS has a considerable absorption enhancing effect and can possibly be used to increase insulin bioavailability via nasal route. However the potential toxic effects of this saponin on nasal mucosa should be further evaluated.
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Affiliation(s)
- S A Sajadi Tabassi
- Pharmaceutical Research Center, Mashhad University of Medical Sciences, P.O. Box 1365-91775, Mashhad, Iran.
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Ramezani M, Behravan J, Yazdinezhad A. Composition and antimicrobial activity of the volatile oil ofArtemisia kopetdaghensis Krasch., M.Pop. & Linecz ex Poljak from Iran. FLAVOUR FRAG J 2006. [DOI: 10.1002/ffj.1644] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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46
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Behravan J, Ramezani M, Kasaian J, Sabeti Z. Antimycotic activity of the essential oil ofSatureja mutica Fisch & C.A. Mey from Iran. FLAVOUR FRAG J 2004. [DOI: 10.1002/ffj.1328] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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47
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Ramezani M, Fazli-Bazzaz BS, Saghafi-Khadem F, Dabaghian A. Antimicrobial activity of four Artemisia species of Iran. Fitoterapia 2004; 75:201-3. [PMID: 15030925 DOI: 10.1016/j.fitote.2003.11.006] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2002] [Accepted: 11/03/2003] [Indexed: 11/18/2022]
Abstract
The antimicrobial activities of methanol extracts of four species of Artemisia species of Iran are reported.
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Affiliation(s)
- M Ramezani
- BuAli Research Institute, Pharmaceutical Research Center, Mashhad University of Medical Sciences, BuAli square, P.O. Box: 9196773117, Mashhad, Iran.
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48
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Bahrami F, Ramezani M, Lahijani M. 492 Study of quantitative abnormalities after oral administration of morphin to balb C mice. Toxicol Lett 2003. [DOI: 10.1016/s0378-4274(03)90491-7] [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: 10/26/2022]
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49
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Sharifi Tehrani A, Ramezani M. Biological control of Fusarium oxysporum, the causal agent of onion wilt by antagonistic bacteria. Commun Agric Appl Biol Sci 2003; 68:543-7. [PMID: 15151288] [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: 04/29/2023]
Abstract
Fusarium wilt caused by Fusarium oxysporum Sch. is one of the most important diseases of onion in Iran. Application of chemicals especially as soil drench, increased cost of onion production and may be dangerous for environment. One of the effective techniques to suppress soil-born diseases in biological control with antagonistic rhizobacteria. Experiment were carried out with 120 bacterial isolates that were collected from onion rhizosphere. Six highly effective isolates were selected from these antagonists for subsequent studies. These strains were used to investigate their biocontrol traits in vitro and their ability to suppress the onion wilt in vivo (soil and seed treatments). According to the biochemical, physiological and morphological test, the isolates 22, 38, 46 and 52 were identified as Bacillus spp. The isolates 16 and 48 were identified as Pseudomonas fluorescens. The isolates of Bacillus spp. produced volatile metabolites that inhibited mycelia growth of Fusarium oxysporum. In soil treatment, the isolates 22 and 52 with 56% and 51% had the highest effect in reducing the Fusarium wilt of onion. The mixture of two isolates reduced 60% the disease. In seed treatment the isolate 22 with 41% had the greatest effect on reducing the onion Fusarium wilt.
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Affiliation(s)
- A Sharifi Tehrani
- Department of Plant Protection, College of Agriculture, University of Tehran, Karaj, Iran
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50
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Abstract
The antihyperglycaemic activity of a Securigera securidaca aqueous infusion and an ethanol maceration extract of seeds was studied in normoglycaemic, glucose-induced hyperglycaemic and alloxan-induced diabetic mice. The acute toxicity of the ethanol extract was more than that of the aqueous one. The phytochemical analysis showed that the seed extracts were rich in flavonoids. The intraperitoneal and oral administration of the aqueous and ethanol extracts significantly reduced blood glucose in alloxan-induced diabetic mice. In normoglycaemic and glucose-induced hyperglycaemic mice, the blood glucose levels were not significantly different from the control. Glibenclamide was not able to lower blood glucose in alloxan-induced diabetic mice, while it significantly lowered the blood sugar in normoglycaemic mice. The results indicate that S. securidaca seed extracts significantly reduce blood glucose in alloxan-induced diabetic mice by a mechanism different from that of sulfonylurea agents.
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Affiliation(s)
- H Hosseinzadeh
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, P.O. Box 91775-1365, Mashhad, I.R. Iran.
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