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Golrokh FJ, Tolami HF, Ghanbarirad M, Mahmoudi A, Tabassi NR, Alkinani TA, Taramsari SM, Aghajani S, Taati H, Akbari F, Noveiri MJS, Hedayati M, Ghasemipour T, Salehzadeh A. Apoptosis induction in colon cancer cells (SW480) by BiFe 2O 4@Ag nanocomposite synthesized from Chlorella vulgaris extract and evaluation the expression of CASP8, BAX and BCL2 genes. J Trace Elem Med Biol 2024; 83:127369. [PMID: 38176316 DOI: 10.1016/j.jtemb.2023.127369] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 10/25/2023] [Accepted: 12/13/2023] [Indexed: 01/06/2024]
Abstract
BACKGROUND The use of nanomaterials in cancer diagnosis and treatment has received considerable interest. Preparation of nanoscale complex molecules could be considered to improve the efficacy and minimize toxicity of the product. This work aimed to biosynthesize BiFe2O4@Ag nanocomposite using the Chlorella vulgaris extract and its cytotoxic effect on colon cancer cell line. METHODS The physicochemical properties of the bioengineered BiFe2O4 @Ag were investigated by Transmission Electron Microscopy (TEM), Field Emission Scanning Electron Microscopy (FE-SEM), Zeta potential, Dynamic Light Scattering (DLS), Fourier Transform Infrared Spectroscopy (FT-IR), Energy Dispersive X-ray Spectroscopy (EDX), Vibrating-sample Magnetometer (VSM) and X-ray Diffraction Analysis (XRD). The cytotoxic potential of BiFe2O4 @Ag was evaluated by MTT assay against SW480 colon cancer cell line. The expression levels of apoptotic genes including BAX, BCL2 and CASP8 were determined by Real-time PCR. The rate of apoptosis and necrosis of the cancer cells as well as the cell cycle analysis were evaluated by flow cytometry. RESULTS Physicochemical assays indicated the nanoscale synthesis (10-70 nm) and functionalization of BiFe2O4 nanoparticles by Ag atoms. The VSM analysis revealed the magnetism of BiFe2O4 @Ag nanocomposite. According to the MTT assay, colon cancer cells (SW480) were considerably more sensitive to BiFe2O4 @Ag nanocomposite than normal cells. Apoptotic cell percentage increased from 1.93% to 73.66%, after exposure to the nanocomposite. Cell cycle analysis confirmed an increase in the number of the cells in subG1 and G0/G1 phases among nanocomposite treated cells. Moreover, treating the colon cancer cells with BiFe2O4 @Ag caused an increase in the expression of CASP8, BAX, and BCL2 genes by 3.1, 2.6, and 1.2 folds, respectively. Moreover, activity of Caspase-3 protein increased by 2.4 folds and apoptotic morphological changes appeared which confirms that exposure to the nanocomposite induces extrinsic pathway of apoptosis in colon cancer cells. CONCLUSION The considerable anticancer potential of the synthesized BiFe2O4 @Ag nanocomposite seems to be related to the induction of oxidative stress which leads to inhibit cell cycle progression and cell proliferation. This study reveals that the BiFe2O4 @Ag is a potent compound to be used in biomedical fields.
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Affiliation(s)
| | - Hedyeh Fazel Tolami
- Department of Biology, Faculty of Sciences, University of Guilan, Rasht, Iran
| | - Maryam Ghanbarirad
- Department of Biology, North Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Aida Mahmoudi
- Department of Biology, Damghan Branch, Islamic Azad University, Damghan, Iran
| | | | | | | | - Shahrzad Aghajani
- Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Hadi Taati
- Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Fatemeh Akbari
- Department of Biology, Faculty of Basic Sciences, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
| | | | | | | | - Ali Salehzadeh
- Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran.
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Moghadasi M, Akbari F, Najafi P. Interaction of aerobic exercise and crocin improves memory, learning and hypocampic tau and neurotrophins gene expression in rats treated with trimethytin as a model of Alzheimer's disease. Mol Biol Rep 2024; 51:111. [PMID: 38227208 DOI: 10.1007/s11033-023-09197-4] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 12/22/2023] [Indexed: 01/17/2024]
Abstract
INTRODUCTION Alzheimer's disease (AD) is characterized by progressive cognitive decline and a reduction in hippocampal neurotrophins, in which trimethytin (TMT) infusion causes tangles and neuronal dysfunction, creating an AD-like model in rats. Previous studies have demonstrated that crocin, which has anti-inflammatory properties, can enhance learning, memory acquisition, and cognitive behavior. This study aimed to assess the combined impact of aerobic exercise and crocin on memory, learning, and hippocampal Tau and neurotrophins gene expression in AD-like model rats. METHODS Forty male Sprague Dawley rats were randomly divided into five groups: (1) healthy control, (2) Alzheimer's control, (3) endurance training, (4) crocin consumption, and (5) endurance training + crocin. Alzheimer's induction was achieved in groups 2-5 through intraperitoneal injection of 8 mg/kg TMT. Rats in groups 3 and 5 engaged in treadmill running three sessions per week, 15-30 min per session, at a speed of 15-20 m/min for eight weeks, and groups 4 and 5 received daily crocin supplementation of 25 mg/kg. RESULTS Alzheimer's induction with TMT showed significant reduction in memory, learning, NGF, BDNF, and TrkB gene expression, and increase in tau gene expression (all p < 0.05). Notably, endurance training and crocin consumption separately significantly increased memory, learning, NGF, BDNF, and TrkB gene expression while significantly decreasing tau gene expression (all p < 0.05). Importantly, combined endurance training with crocin yielded the most profound effects on memory (p = 0.001), NGF (p = 0.002), BDNF (p = 0.001), and TrkB (p = 0.003) gene expression (p < 0.005), as well as a reduction in tau gene expression (p = 0.001). CONCLUSION These findings underscore the possible impact of endurance training, particularly when coupled with crocin, on enhancing memory, learning, and neurotrophin gene expression and reducing tau gene expression in Alzheimer's rats. These results highlight the possibility of synergistic interventions for improved therapeutic outcomes.
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Affiliation(s)
- Mehrzad Moghadasi
- Department of Physical Education, Shiraz branch, Islamic Azad University, Shiraz, Iran.
| | - Fatemeh Akbari
- Department of Physical Education, Darab branch, Islamic Azad University, Darab, Iran
| | - Parisa Najafi
- Faculty of Sports and Exercise Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
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Alkinani TA, Bajgiran FA, Rezaei M, Maivan AM, Golrokh FJ, Bejarbaneh M, Mojdehi SR, Gorji S, Ghasemian R, Dashtban Jalil Pustin Sarai M, Akbari F, Dehghan S, Mirzaee F, Abdulrahman NH, Salehzadeh A. Evaluation the cytotoxic effect of Fe 3O 4@Glu-Gingerol on lung adenocarcinoma cell line (A549) with biological mechanisms. Heliyon 2024; 10:e23419. [PMID: 38173472 PMCID: PMC10761571 DOI: 10.1016/j.heliyon.2023.e23419] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 12/03/2023] [Accepted: 12/04/2023] [Indexed: 01/05/2024] Open
Abstract
The use of nanotechnology products with supermagnetic properties for targeted delivery of drugs has gained attention recently. Due to the anticancer features of Gingerol, the major phenolic compound from Ginger, this study aims to prepare Fe3O4@Glucose-Gingerol nanoparticles (NPs) and investigate their anticancer potential in a lung adenocarcinoma cell line. The physical and chemical features of the nanoparticles were investigated by FT-IR, XRD, zeta potential, DLS, EDS mapping, VSM, and electron microscope imaging. Cytotoxic effects of the nanoparticles for the A549 (lung adenocarcinoma) and MRC-5 (normal) cell lines was investigated by MTT assay. Furthermore, the effects of Fe3O4@Glucose-Gingerol nanoparticles on the expression of the CASP8, BAX, and BCL2 genes and the activity of Caspase 3 were characterized. The flow cytometry assay (annexin V/PI) was employed to find out the percentage of apoptotic cells. The Fe3O4@Glu-Gingerol NPs were spherical (42-67 nm), without elemental impurity, and with surface charge, DLS size, and magnetic saturation of -47.7 mV, 154 nm, and 35 emu/g, respectively. Fe3O4@Glu-Gingerol NPs showed a remarkable greater toxicity in the A549 cells than normal cell line with the 50 % inhibition concentration (IC50) of 190 and 554 μg/mL, respectively. Treatment of lung adenocarcinoma cells with the Fe3O4@Glu-Gingerol NPs led to an increase in cell apoptosis from 4.6 to 39.48 %. Also, the CASP8 and BAX genes were upregulated by 2.49 and 2.8 folds, respectively, while a downregulation by 0.75 folds was noticed for the BCL2. Moreover, apoptotic features were observed in Fe3O4@Glu-Gingerol NPs treated cells by Hoechst staining, and activation of Caspase 3 by 2.8 folds. This study revealed that the Fe3O4@Glu-Gingerol NPs have antiproliferative effects on the lung adenocarcinoma cell line by activation of intrinsic and extrinsic apoptosis that is a promising feature in cancer treatment.
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Affiliation(s)
| | | | - Mohammad Rezaei
- Iranian Research Organization for Science and Technology, Tehran, Iran
| | | | | | - Mona Bejarbaneh
- Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | | | - Sahar Gorji
- Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Reza Ghasemian
- Department of Medical Sciences, Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | | | - Fatemeh Akbari
- Department of Biology, Faculty of Basic Sciences, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
| | - Somayeh Dehghan
- Department of Biology, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Fatemeh Mirzaee
- Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | | | - Ali Salehzadeh
- Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
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Narmashiri A, Akbari F. The Effects of Transcranial Direct Current Stimulation (tDCS) on the Cognitive Functions: A Systematic Review and Meta-analysis. Neuropsychol Rev 2023:10.1007/s11065-023-09627-x. [PMID: 38060075 DOI: 10.1007/s11065-023-09627-x] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 10/24/2023] [Indexed: 12/08/2023]
Abstract
Previous studies have investigated the effect of transcranial direct current stimulation (tDCS) on cognitive functions. However, these studies reported inconsistent results due to differences in experiment design, measurements, and stimulation parameters. Nonetheless, there is a lack of meta-analyses and review studies on tDCS and its impact on cognitive functions, including working memory, inhibition, flexibility, and theory of mind. We performed a systematic review and meta-analysis of tDCS studies published from the earliest available data up to October 2021, including studies reporting the effects of tDCS on cognitive functions in human populations. Therefore, these systematic review and meta-analysis aim to comprehensively analyze the effects of anodal and cathodal tDCS on cognitive functions by investigating 69 articles with a total of 5545 participants. Our study reveals significant anodal tDCS effects on various cognitive functions. Specifically, we observed improvements in working memory reaction time (RT), inhibition RT, flexibility RT, theory of mind RT, working memory accuracy, theory of mind accuracy and flexibility accuracy. Furthermore, our findings demonstrate noteworthy cathodal tDCS effects, enhancing working memory accuracy, inhibition accuracy, flexibility RT, flexibility accuracy, theory of mind RT, and theory of mind accuracy. Notably, regarding the influence of stimulation parameters of tDCS on cognitive functions, the results indicated significant differences across various aspects, including the timing of stimulation (online vs. offline studies), population type (clinical vs. healthy studies), stimulation duration (< 15 min vs. > 15 min), electrical current intensities (1-1.5 m.A vs. > 1.5 m.A), stimulation sites (right frontal vs. left frontal studies), age groups (young vs. older studies), and different cognitive tasks in each cognitive functioning aspect. In conclusion, our results demonstrate that tDCS can effectively enhance cognitive task performance, offering valuable insights into the potential benefits of this method for cognitive improvement.
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Affiliation(s)
- Abdolvahed Narmashiri
- School of Cognitive Sciences, Institute for Research in Fundamental Sciences (IPM), Tehran, Iran.
- Electrical Engineering Department, Bio-Intelligence Research Unit, Sharif Brain Center, Sharif University of Technology, Tehran, Iran.
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Narmashiri A, Akbari F, Sohrabi A, Hatami J. Conspiracy beliefs are associated with a reduction in frontal beta power and biases in categorizing ambiguous stimuli. Heliyon 2023; 9:e20249. [PMID: 37810845 PMCID: PMC10550632 DOI: 10.1016/j.heliyon.2023.e20249] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 09/14/2023] [Accepted: 09/14/2023] [Indexed: 10/10/2023] Open
Abstract
Prior beliefs, such as conspiracy beliefs, significantly influence our perception of the natural world. However, the brain activity associated with perceptual decision-making in conspiracy beliefs is not well understood. To shed light on this topic, we conducted a study examining the EEG activity of believers, and skeptics during resting state with perceptual decision-making task. Our study shows that conspiracy beliefs are related to the reduced power of beta frequency band. Furthermore, skeptics tended to misclassify ambiguous face stimuli as houses more frequently than believers. These results help to explain the differences in brain activity between believers and skeptics, especially in how conspiracy beliefs impact the categorization of ambiguous stimuli.
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Affiliation(s)
- Abdolvahed Narmashiri
- School of Cognitive Sciences, Institute for Research in Fundamental Sciences (IPM), Tehran, Iran
- Bio-intelligence Research Unit, Sharif Brain Center, Electrical Engineering Department, Sharif University of Technology, Tehran, Iran
- Shahid Beheshti University, Tehran, Iran
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Akbari F. A comprehensive open-access database of electron backscattering coefficients for energies ranging from 0.1 keV to 15 MeV. Med Phys 2023; 50:5920-5929. [PMID: 37470447 DOI: 10.1002/mp.16604] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 05/26/2023] [Accepted: 06/22/2023] [Indexed: 07/21/2023] Open
Abstract
PURPOSE The characterization of electron backscattering is essential in medical physics for accurately assessing dose deposited around inhomogeneities where backscattering alters the spatial energy distribution pattern and for determining Monte-Carlo code's ability to effectively describe electron scattering and does calculation in a target volume. Recent machine learning advances have provided physicists with powerful tools for effectively extracting information and trends from extensive experiment observations if sufficiently sizeable datasets are available for data mining. We report on the development of a publicly accessible database on electron backscattering coefficients for solid targets. ACQUISITION AND VALIDATION METHODS The first database on electron-solid interactions was assembled in 1995. Data for bulk materials, limited to normal incidence and energies up to 100 keV, were primarily focusing on electron microscopy. To accommodate broad high-energy applications and include the most recent publications we have created a comprehensive database of electron backscattering coefficients, listed as a function of target atomic number and thickness, electron energy, and incidence angle. These additions resulted in a database of 3566 data points, compared to the previous database of 1430. The data collection includes only published experimental observations (no calculations or results fitting) with no attempt to judge their accuracy or quality. A limited number of data points were compared to recently published Monte-Carlo results. DATA FORMAT AND USAGE NOTES The presented database provides values of electron backscattering coefficients for 50 elements and 19 compounds at electron energies ranging from 0.1 keV to 15 MeV, presented in ASCII files. Each file contains the electron energy and backscattering coefficient with target thickness or electron incidence angle included where available, and the reference number shown in the last column. Additionally, the presented data were shown in the graphs for better visualization. The online database can be accessed from the website https://doi.org/10.5281/zenodo.7810951. POTENTIAL APPLICATIONS The database provides the most up-to-date source of experimentally obtained electron backscattering coefficients that can be used in theoretical and MC calculations and modeling validations. The data availability is still very limited for many solids and almost non-existent for compounds. Novel machine learning methods should be well adapted to predict these unknown values for various targets, thicknesses, energies, and incident angles utilizing the presented cleaned dataset.
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Affiliation(s)
- Fatemeh Akbari
- Department of Radiation Oncology, University of Toledo Health Science Campus, Toledo, Ohio, USA
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Marefati N, Beheshti F, Anaeigoudari A, Alipour F, Shafieian R, Akbari F, Pirasteh M, Mahmoudabady M, Salmani H, Mawdodi S, Hosseini M. The effects of vitamin D on cardiovascular damage induced by lipopolysaccharides in rats. J Cardiovasc Thorac Res 2023; 15:106-115. [PMID: 37654818 PMCID: PMC10466464 DOI: 10.34172/jcvtr.2023.31719] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 06/12/2023] [Indexed: 09/02/2023] Open
Abstract
Introduction Inflammation and oxidative stress are contributed to cardiovascular diseases. Vitamin D (Vit D) has antioxidant and anti-inflammatory properties. In the current research, the effect of Vit D on cardiac fibrosis and inflammation, and oxidative stress indicators in cardiovascular tissues was studied in lipopolysaccharides(LPS) injected rats. Methods Rats were distributed into 5 groups and were treated for 2 weeks. Control: received vehicle(saline supplemented with tween-80) instead of Vit D and saline instead of LPS, LPS: treated by 1 mg/kg of LPS and was given vehicle instead of Vit D, LPS-Vit D groups: received 3 doses of Vit D (100, 1000, and 10000 IU/kg) of Vit D in addition to LPS. Vit D was dissolved in saline supplemented with tween-80 (final concentration 0.1%) and LPS was dissolved in saline. The white blood cell (WBC) was counted. Oxidative stress markers were determined in serum, aorta, and heart. Cardiac tissue fibrosis was also estimated using Masson's trichrome staining method. Results WBC and malondialdehyde (MDA) were higher in the LPS group than the control group, whereas the thiol content, superoxide dismutase (SOD), and catalase (CAT) were lower in the LPS group than the control group (P<0.01 and P<0.001). Administration of Vit D decreased WBC (P<0.001) and MDA (P<0.05 and P<0.001) while enhanced thiol (dose 10000 IU/Kg) (P<0.001), SOD (dose 10000 IU/kg) (P<0.001), and CAT (P<0.05 and P<0.001) compared to the LPS group. All doses of Vit D also decreased cardiac fibrosis compared to the LPS group (P<0.001). Conclusion Vit D protected the cardiovascular against the detrimental effect of LPS. This cardiovascular protection can be attributed to the antioxidant and anti-inflammatory properties of Vit D.
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Affiliation(s)
- Narges Marefati
- Department of Physiology and Medical Physics, Faculty of Medicine, Baqiyatallah University of Medical Sciences, Tehran, Iran
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Farimah Beheshti
- Neuroscience Research Center, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
- Department of Physiology, School of Medicine, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
| | - Akbar Anaeigoudari
- Department of Physiology, School of Medicine, Jiroft University of Medical Sciences, Jiroft, Iran
| | - Fatemeh Alipour
- Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Reyhaneh Shafieian
- Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Fatemeh Akbari
- Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maryam Pirasteh
- Neuroscience Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maryam Mahmoudabady
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hossein Salmani
- Student Research Committee, Jiroft University of Medical Sciences, Jiroft, Iran
| | - Sara Mawdodi
- Pharmacological Research Center of Medicinal Plants, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahmoud Hosseini
- Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Psychiatry and Behavioral Sciences Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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Akbari F, Shvydka D. Electron backscattering for signal enhancement in a thin-film CdTe radiation detector. Med Phys 2022; 49:6654-6665. [PMID: 35830344 PMCID: PMC9805067 DOI: 10.1002/mp.15813] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 04/20/2022] [Accepted: 06/06/2022] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Thin-film cadmium telluride (CdTe) offers high average electron density, direct detection configuration, and excellent radiation hardness, making it an attractive material for radiation detectors. Although a very thin detector provides capabilities to conduct high-resolution measurements in high-energy radiation fields, it is limited by a low signal, often boosted with a front metal converter enhancing X-ray absorption. An extension of this approach can be explored through the investigation of electron backscattering phenomenon, known to be highly dependent on the material atomic number Z. Adding an electron reflector in tandem with the back electrode is proposed to be utilized for the detector signal enhancement. PURPOSE We investigated the possibility of augmenting the fluence of electrons traversing CdTe thin film and thus increasing the detected signal pursuing two pathways: (1) adding a high-Z metal layer to the back of the detector surface, and (2) adding a top low-Z material to the detector layer to return its backscattered electrons. Copper (Cu) and lead (Pb) layers of varying thickness were investigated as potential metal back-reflectors, whereas polymethyl methacrylate (PMMA) water phantom material was tested as the top cover in multilayer detector structures. METHODS The Monte Carlo (MC) radiation transport package MCNP5 was first used to model a basic multilayer structure of a CdTe-sensitive volume surrounded by PMMA, under a 6-MV photon beam. Addition of Cu or Pb back-reflectors allowed for the analysis of the signal enhancement and associated changes in Compton electrons fluence spectra. Related backscattering coefficients were then calculated using EGSnrc MC user-code for monoenergetic electron sources. Analytical functions were established to represent the best fitting curves to the simulation data. Finally, electron backscattering data was related to signal enhancement in the CdTe sensitive layer based on a semiquantitative approach. RESULTS We studied multilayer detector structures, decoupling the effects of PMMA and the back-reflector metals, Cu or Pb, on electron backscattering for electron energy range of up to 500 keV or 1 MeV depending on the choice of metal. Adding a 100-200-µm-thick metal film below the detector sensitive volume increased the fraction of reflected electrons, especially in the low, 100-200 keV, energy range. The thickness dependence of backscattering coefficients from thin films exhibits saturations at values significantly exceeding the electron ranges. That effect was related to the large-angle electron scattering. A detailed simulation of energy deposition revealed that the modified structures using Cu and Pb increased energy deposition by ∼10% and 75%, respectively. We have also established a linear dependence between the energy deposition in the semiconductor layer and the fluence of backscattered electrons in the corresponding multilayer structure. The low-Z top layer in practically implemental thicknesses of tens of micrometers has a positive effect due to partial electron reflection back to the semiconductor layer. CONCLUSIONS Signal enhancement in a thin-film CdTe radiation detector could be achieved using electron backscattering from metal reflectors. The methodology explored here warrants further studies to quantify achievable signal enhancement for various thin films and other small sensitive volume detectors.
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Affiliation(s)
- Fatemeh Akbari
- Department of Radiation OncologyUniversity of Toledo Health Science CampusToledoOhioUSA
| | - Diana Shvydka
- Department of Radiation OncologyUniversity of Toledo Health Science CampusToledoOhioUSA
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Ghasemi S, Dashti M, Fahimipour A, Daryakenari G, Mirzaei F, Akbari F, Khurshid Z. Onset of Mucormycosis in Patients with COVID-19: A Systematic Review on Patients' Characteristics. Eur J Dent 2022; 17:24-38. [PMID: 36049777 PMCID: PMC9949939 DOI: 10.1055/s-0042-1751003] [Citation(s) in RCA: 1] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
Abstract
Mucormycosis has a significant impact on patients' standard of living and, therefore, a high clinical suspicion, prediagnosis, and rapid treatment are critical in easing patients' suffering and fast recovery. Our focus is to conduct an organized review based on various variables on the patients' characteristics having mucormycosis in severe novel coronavirus disease 2019 (COVID-19). We examined Embase, PubMed-Medline, LitCovid, Web of Science, Scopus, and the reference lists of included case reports up to September 20, 2021, using the Medical Subject Heading (MeSH) phrases and other keywords related to this topic. Subsequently, we investigated associated comorbidities, patient characteristics, position of mucormycosis, steroids use, body involvements, and outcomes. Overall, 77 studies were conducted and among these, 72 studies mentioned that the patients' age to be 48.13±14.33 (mean±standard deviation [SD]) years. Diabetes mellitus (DM) was reported in 77.9% (n=60) of cases. Studies showed that central nervous system (CNS) and bone involvement were reported in 62.3 (n=48) and 53.2% (n=41), respectively. More fatalities were observed in patients with mucormycosis with the active form of COVID-19. Also, men infected with mucormycosis significantly affected by COVID-19. In the end, mortality was higher in males with mucormycosis. As a result, a solid investigation into the root cause of mucormycosis, especially in COVID-19, should be included in the study plan. If the patient is COVID-19-positive and immunosuppressed, this opportunistic pathogen diagnostic test should not be overlooked.
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Affiliation(s)
- Shohreh Ghasemi
- Department of Oral and Maxillofacial Surgery, The Dental College of Georgia at Augusta University, Augusta, GA, USA,Department of Craniofacial Reconstruction and Trauma Queen Marry, University of London, London, UK
| | - Mahmood Dashti
- Department of Orthodontics, Georgia School of Orthodontics, Atlanta, Georgia, USA,Address for correspondence Mahmood Dashti, DDS Department of Orthodontics, Georgia School of OrthodonticsAtlanta, GeorgiaUSA
| | - Amir Fahimipour
- Department of Oral Surgery, Medicine and Diagnostics, School of Dentistry, Faculty of Medicine and Health, Westmead Centre for Oral Health, The University of Sydney, Sydney, Australia
| | - Ghazaleh Daryakenari
- Department of Oral and Maxillofacial Surgery, Student Research Committee, Golestan University of Medical Sciences, Gorgan, Iran
| | - Fatemeh Mirzaei
- Student Research Committee, Golestan University of Medical Sciences, Gorgan, Iran
| | - Fatemeh Akbari
- Department of Dentistry, Mazandaran University of Medical Science, Mazandaran, Iran
| | - Zohaib Khurshid
- Department of Prosthodontics and Dental Implantology, College of Dentistry, King Faisal University, Al-Ahsa, Kingdom of Saudi Arabia
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Londono J, Ghasmi S, Lawand G, Mirzaei F, Akbari F, Dashti M. Assessment of the golden proportion in natural facial esthetics: A systematic review. J Prosthet Dent 2022:S0022-3913(22)00285-2. [PMID: 35738927 DOI: 10.1016/j.prosdent.2022.04.026] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 04/19/2022] [Accepted: 04/20/2022] [Indexed: 10/18/2022]
Abstract
STATEMENT OF PROBLEM Faces considered attractive tend to possess a general harmony; however, scientific studies on the quantitative basis of human facial attractiveness are still sparse. The golden proportion has been the most documented ratio, but the actual existence of codified facial ratios in facially attractive individuals remains unclear. PURPOSE The purpose of this systematic review was to evaluate the deviation from the golden proportion in the measurements of different natural vertical facial ratios. MATERIAL AND METHODS A comprehensive search of the electronic databases that included PubMed/MEDLINE, Web of Science, Embase, Scopus, Scopus Secondary documents, and the Cochrane Database of Systematic Reviews was conducted using the terms "golden proportion", "golden proportions", "golden ratio", "golden ratios", "golden number", "golden section", "divine proportion", "divine proportions", "divine ratio", "divine ratios", and "Fibonacci" in combination with 1 or more of the ensuing terms: "facial proportion", "facial proportions", "facial measurement", and "facial measurements". Deviation of the facial proportions from the golden proportions was further analyzed by using a 1-sample t test (α=.05). RESULTS The 1-sample test showed no significant difference among the means of each variable (P>.05), suggesting that the golden proportion is found in natural facial esthetics. CONCLUSIONS No significant association was found between the golden ratio and facial evaluation scores among all ethnicities. The measurements and proportions for facial balance in the study population showed that the participant's facial height proportions did not follow the golden proportion.
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Affiliation(s)
- Jimmy Londono
- Associate Professor, Department of Restorative Sciences, The Dental College of Georgia at Augusta University, Augusta, Ga
| | - Shohreh Ghasmi
- Adjunct Assistant Professor, Department of Oral and Maxillofacial Surgery, The Dental College of Georgia at Augusta University, Augusta, Ga
| | - Ghida Lawand
- Prosthodontic Resident, Department of Prosthodontics and Esthetic Dentistry, Saint Joseph University, Beirut, Lebanon
| | - Fatemeh Mirzaei
- Dental student, Student Research Committee, Golestan University of Medical Sciences, Gorgan, Iran
| | - Fatemeh Akbari
- Dental student, Student Research Committee, Dental School, Mazandaran University of Medical Science, Mazandaran, Iran
| | - Mahmood Dashti
- Postgraduate Orthodontics Resident, Georgia School of Orthodontics, Atlanta, Georgia, USA.
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Fani A, Varmazyar S, Akbari F, Garfami M, Mohaghegh R, Balkhi S, Mojdehi SR, Tabassi NR, Hosseinpour T, Ghanbari Z, Salehzadeh A. Green Synthesis of a Novel PtFe2O4@Ag Nanocomposite: Implications for Cytotoxicity, Gene Expression and Anti-Cancer Studies in Gastric Cancer Cell Line. J CLUST SCI 2022. [DOI: 10.1007/s10876-022-02244-3] [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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12
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Akbari F, Mohammadi S, Dehghani M, Sanderman R, Hagedoorn M. The Mediating Role of Illness Cognitions in the Relationship Between Caregiving Demands and Caregivers' Psychological Adjustment. Clin J Pain 2022; 38:257-263. [PMID: 35093956 PMCID: PMC8920000 DOI: 10.1097/ajp.0000000000001018] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 11/05/2021] [Accepted: 12/22/2021] [Indexed: 12/04/2022]
Abstract
OBJECTIVE The present study investigated whether illness cognitions mediated the relationship between caregiving demands and positive and negative indicators of adjustment in partners of patients with chronic pain. METHODS The sample of this cross-sectional study consisted of 151 partners (mean age=61.4 y, SD=13.6 y, 57% male) of patients with chronic pain (eg, back pain). The study was conducted in the Pain Centre of the University Medical Centre Groningen, The Netherlands, during November 2014 to June 2015. Participants completed questionnaires that assessed caregiving demands, illness cognitions, perceived burden, distress, positive affect, and life satisfaction. RESULTS The results showed that among illness cognitions, acceptance of the illness mediated the association between caregiving demands and burden (b=0.16, 95% confidence interval [CI]: 0.05-0.28) and positive affect (b=-0.21, CI: -0.41 to -0.06). Helplessness mediated the association between caregiving demands and burden (b=0.46, CI: 0.26-0.69) and distress (b=0.35, CI: 0.19-0.53). Perceived benefits did not mediate any of these associations. The findings indicate that partners who experience more demands tend to appraise the consequences of the patients' pain condition more negatively, which in turn is associated with their emotional adjustment. DISCUSSION The results suggest that illness cognitions play an important role in the psychological adjustment of partners. Enhancing acceptance of the illness and reducing feelings of helplessness could form the basis of interventions aiming at promoting psychological adjustment in partners, especially when it is difficult to reduce the demands.
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Affiliation(s)
- Fatemeh Akbari
- Department of Health Psychology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Somayyeh Mohammadi
- Department of Occupational Science and Occupational Therapy, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
- Department of Psychology, Kingston University, London, UK
| | - Mohsen Dehghani
- Department of Psychology, Shahid Beheshti University, Tehran, Iran
- Neuroepidemiology Unit, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Vic., Australia
| | - Robbert Sanderman
- Department of Health Psychology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Mariёt Hagedoorn
- Department of Health Psychology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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Hussein Alsharbaty MH, Shirazi M, Mohammed N, Akbari F. Lessons Learned from the COVID-19 Pandemic in Implant Dentistry Settings. Dent Hypotheses 2022. [DOI: 10.4103/denthyp.denthyp_119_22] [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: 12/15/2022] Open
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14
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Akbari F, Taghizadeh S, Pearson D. A retrospective study to establish recommendations for plan quality metrics in Lung SBRT. Med Dosim 2021; 47:111-116. [PMID: 34973881 DOI: 10.1016/j.meddos.2021.10.001] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 10/27/2021] [Indexed: 10/19/2022]
Abstract
The increased use of Stereotactic body radiation therapy (SBRT) has warranted a new method of plan evaluation. The crucial component of SBRT is the precise, conformal delivery of radiation dose to the target with rapid dose fall-off in the surrounding normal tissues.In this study, we retrospectively evaluated plan quality in lung SBRT patients by calculating conformity, homogeneity, and gradient parameters using an in-house script. The goal of this study was to establish achievable, size-dependent recommendations for these plan quality metrics such that they may be used as a guideline in our clinic. Seventy-three patients treated with lung SBRT at The University of Toledo Medical Center during the period 2017-2020 were retrospectively reviewed for this study. Plans were evaluated using dosimetric indices from respective The Radiation Therapy Oncology Group (RTOG) and International Commission on Radiation Units and Measurements (ICRU) protocols. Average values for each of the following indices were calculated: RTOG conformity index = 1.12 ± 0.13; Paddick conformity index = 0.82 ± 0.07; gradient index = 4.63 ± 0.71; and Homogeneity index = 0.3 ± 0.07, for all studied lung lesions with a mean volume of 23.2 cc. Our final recommendations are based on clinically approved plans, after having removed statistical outliers that we may not have approved had the metrics been calculated. Additionally, we observed that a sharper dose fall-off and a more homogeneous plan were found using 6 FFF compared to 10 FFF energy. Comparison between our results and RTOG0915 data shows no deviation or minor deviation for the RTOG conformity index and the ratio of 50% prescription isodose volume to the target volume. Furthermore, no statistically significant correlation between RTOG conformity index and target volume was observed which is in agreement with RTOG0915. Using various dosimetric indices to characterize dose distributions in lung SBRT is a powerful tool to assess plan quality. We recommend that these values be calculated for all plans, utilizing a script or program so as to improve clinical workflow.
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Affiliation(s)
- Fatemeh Akbari
- Department of Radiation Oncology, University of Toledo Health Science Campus, Toledo, OH, 43614 USA
| | - Somayeh Taghizadeh
- Department of Radiation Oncology, University of Toledo Health Science Campus, Toledo, OH, 43614 USA
| | - David Pearson
- Department of Radiation Oncology, University of Toledo Health Science Campus, Toledo, OH, 43614 USA.
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Akbari F, Peymani M, Salehzadeh A, Ghaedi K. Identification of modules based on integrative analysis for drug prediction in colorectal cancer. Gene Reports 2021. [DOI: 10.1016/j.genrep.2021.101403] [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: 11/30/2022]
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16
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Akbari F, Azadbakht M, Megha K, Dashti A, Vahedi L, Barzegar Nejad A, Mahdizadeh Z, Abdi Sarkami S, Sadati M. Evaluation of Juniperus communis L. seed extract on benign prostatic hyperplasia induced in male Wistar rats. Afr J Urol 2021. [DOI: 10.1186/s12301-021-00137-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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
Benign prostatic hyperplasia (BPH) is a common disease which causes various health problems for elderly men such as urinary retention, recurring urinary tract infection and bladder stones. The aim of this study is to evaluate the therapeutic effects of Juniperus communis L. seed extract (JCS) on BPH in male Wistar rats.
Methods
To this end, 30 rats were divided into 5 groups (N = 6): group 1 (vehicle), group 2 (disease control), group 3 (standard medicine; 10 mg/kg finasteride), and groups 4 and 5 were treated with 300 mg/kg and 600 mg/kg of the hydroalcoholic JCS seed extract, respectively. Groups 2, 3, 4 and 5 received testosterone enanthate to induce prostatic hyperplasia. At the end of experimental period (28 days), prostate glands were cut off under anesthesia. Histopathological examination was done and biochemical parameters such as Malondialdehyde, Glutathione and protein carbonyl were also measured. Their body weights were also observed during the study. At the end of the experiment, prostate weights and prostate specific antigen (PSA) levels were measured. Prostate index, inhibition prostate weight and inhibition prostate index were also calculated.
Results
Both histopathological examination and biochemical parameter results showed significant improvements in rats treated with finasteride and 600 mg/kg JCS extract (p < 0.01). In addition, PSA levels showed significant decrease in comparison with the disease group. But acute toxicity test indicated that using JCS extract resulted in an increase in liver enzymes (ALP, LDH, SGOT, SGPT). As a result, the extract should be used with caution.
Conclusions
Oral administration of JCS extract is effective on preventing testosterone-induced benign prostatic hyperplasia.
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Akbari F, Mohammadi S, Dehghani M, Sanderman R, Hagedoorn M. Interpretations of partners' responses to pain behaviours: Perspectives of patients and partners. Br J Health Psychol 2020; 26:401-418. [PMID: 33180996 PMCID: PMC8246883 DOI: 10.1111/bjhp.12490] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 04/07/2020] [Revised: 09/28/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Partner's responses to pain behaviours play a pivotal role in the patient's adjustment. This study aims to further our knowledge regarding patients' and partners' interpretation of partners' responses to pain behaviours, and the possible discrepancies between patients' and partners' perceptions. Further, this study examines patients' preferred responses to pain behaviours and possible discrepancies between received and preferred responses to pain behaviours. DESIGN A qualitative research design based on a semi-structured in-depth interview. METHODS Patients with chronic low back pain and their partners (n = 54) were recruited through purposive sampling and interviewed. Data were analysed based on an inductive analytic approach. RESULTS Patients as well as partners indicated a number of different interpretations of partners' responses to pain behaviours, including invalidation, relieving pain, validation, encouragement, caregiving exhaustion, and expressing resentment. Patients and partners revealed similarities in the interpretation of response categories that they associated with validation, invalidation, and expressing resentment. Discrepancies between patients and partners indicated that partners interpreted some responses as caused by caregiving exhaustion while patients did not. Patients perceived partner responses that included the active involvement of the partner (e.g., encouraging pain talk) more positively than responses that showed less active involvement of the partner. CONCLUSION Patients and partners are likely to make various interpretations of a certain partner response to pain behaviours. Our findings underscore that patients' interpretation about a certain behaviour might determine whether that behaviour is rated as desirable or aversive.
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Affiliation(s)
- Fatemeh Akbari
- Department of Health Psychology, University Medical Center Groningen, University of Groningen, The Netherlands
| | - Somayyeh Mohammadi
- Department of Occupational Science and Occupational Therapy, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Mohsen Dehghani
- Department of Psychology, Shahid Beheshti University, Tehran, Iran.,Neuroepidemiology Unit, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Victoria, Australia
| | - Robbert Sanderman
- Department of Health Psychology, University Medical Center Groningen, University of Groningen, The Netherlands
| | - Mariёt Hagedoorn
- Department of Health Psychology, University Medical Center Groningen, University of Groningen, The Netherlands
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Akbari F, Peymani M, Salehzadeh A, Ghaedi K. Integrative in silico and in vitro transcriptomics analysis revealed new lncRNAs related to intrinsic apoptotic genes in colorectal cancer. Cancer Cell Int 2020; 20:546. [PMID: 33292233 PMCID: PMC7653898 DOI: 10.1186/s12935-020-01633-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 10/29/2020] [Indexed: 12/24/2022] Open
Abstract
Background Pathogenesis of colorectal cancer (CRC) is connected to deregulation of apoptosis while the effect of lncRNAs, as critical regulatory molecules, on this pathway is not clear well. The present study aimed to identify differential expression of genes and their related lncRNAs which are significantly associated with intrinsic apoptotic pathway in CRC. Methods The connection between CRC and apoptosis was investigated by literature reviews and the genes were enriched by using Enrichr. At the next step, differential expression of enriched genes were evaluated between normal and tumor populations in data sets and were downloaded from GEO. Then, meta-analysis and probe re-annotation were performed. For lncRNAs selection through the highest expression correlation with each of candidate genes, mRNA-lncRNA interaction of screened genes and all of lncRNAs were visualized using Cytoscape. Identified differential expression genes and lncRNAs were validated using TCGA-COAD and the obtained data were confirmed by in vitro studies in the presence of Ag@Glu-TSC nanoparticle as an apoptotic inducer. Cytotoxicity and apoptosis induction effect of Ag@Glu-TSC on Caco-2 cells was determined via MTT and Annexin V/PI, respectively. The expression of genes and lncRNAs were assayed in presence of mentioned nanoparticle. Finally, the expression level of desired genes and lncRNAs were proven in CRC tissues compared to adjacent normal tissues. Results After detection of 48 genes associated with intrinsic apoptosis in CRC according to literature, Enrichr screened 12 common genes involved in this pathway. Among them, 6 genes including BCL2, BCL2L11, BAD, CASP7, CASP9, and CYCS expression reduced in tumor tissue compared to normal according to meta-analysis studies and RNA-seq TCGA data. Afterwards, association of 8 lncRNAs comprising CDKN2B-AS1, LOC102724156, HAGLR, ABCC13, LOC101929340, LINC00675, FAM120AOS, PDCD4-AS1 with more than 5 candidate genes were identified. In vitro studies revealed that four selected lncRNAs including, CDKN2B-AS1, LOC102724156, HAGLR and FAM120AOS were significantly increased in the presence of in optimum concentration of Ag@Glu/TSC and decreased in tumor tissues versus adjacent normal tissues. Conclusion This study developed a new data mining method to screen differentially expressed lncRNAs which are involved in regulation of intrinsic apoptosis pathway in CRC quickly using published gene expression profiling microarrays. Moreover, we could validate a number of these regulators in the cellular and laboratory disease models.
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Affiliation(s)
- Fatemeh Akbari
- Department of Biology, Faculty of Basic Sciences, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
| | - Maryam Peymani
- Department of Biology, Faculty of Basic Sciences, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran.
| | - Ali Salehzadeh
- Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran.
| | - Kamran Ghaedi
- Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
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Jarestan M, Khalatbari K, Pouraei A, Sadat Shandiz SA, Beigi S, Hedayati M, Majlesi A, Akbari F, Salehzadeh A. Preparation, characterization, and anticancer efficacy of novel cobalt oxide nanoparticles conjugated with thiosemicarbazide. 3 Biotech 2020; 10:230. [PMID: 32399380 DOI: 10.1007/s13205-020-02230-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Accepted: 04/26/2020] [Indexed: 01/26/2023] Open
Abstract
Gastric cancer is one of the most common cancers in modern societies. Previous studies have shown that the use of nanoparticle complexes is effective in the treatment of cancer. The aim of this study was to investigate the cytotoxicity and anticancer properties of cobalt oxide (Co3O4) nanoparticles (NPs) functionalized by glutamic acid (Glu) and conjugated with thiosemicarbazide (TSC) on gastric cancer (AGS) cell line. First, the Co3O4@Glu/TSC nanoparticles were synthesized via co-condensation reaction. Fourier-transform infrared (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) tests were performed for identifying the morphology, structure, size and functional groups of produced nanoparticles. MTT assay was also performed to evaluate cytotoxicity effect. Moreover, Annexin V/PI staining with flow cytometry analysis, caspase-3 activation assay, and Hoechst 33258 staining was carried out for evaluating apoptosis. The FTIR results showed that the components of Co3O4@Glu/TSC NPs complex were successfully fabricated. Crystallographic structure of Co3O4@Glu/TSC NPs was confirmed by XRD patterns. SEM results indicated that the size of the nanoparticles was in the range of 16-40 nm. An EDX spectrum was determined and data explained the existence of cobalt as the prominent element. MTT test results showed that AGS cell life was significantly decreased compared to the control group with increasing concentration of nanoparticles (dose-dependent) (P < 0.05), IC50 = 107.5 μg/mL. The results of flow cytometry assay and caspase-3 activity showed that fabricated Co3O4@Glu/TSC NPs induced apoptosis in the treated group. Moreover, Co3O4@Glu/TSC NPs treated AGS cells indicate an increase in the apoptotic characteristics including nuclear fragmentation. In the current work, the promising cytotoxicity and anti-cancer activities of Co3O4@Glu/TSC NPs complex toward gastric cancer (AGS) cell line were showed and it can be suggested for the drug delivery system.
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Affiliation(s)
- Mahsa Jarestan
- 1Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Kimia Khalatbari
- 1Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Ayda Pouraei
- 2Department of Medical Sciences, Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | | | - Sadaf Beigi
- 1Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Mohammad Hedayati
- 4Department of Cell and Molecular Biology, University of Guilan, Rasht, Iran
| | - Amitis Majlesi
- 1Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Fatemeh Akbari
- Department of Biology, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
| | - Ali Salehzadeh
- 1Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
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Akbari F, Dehghani M, Mohammadi S. Factor structure and invariance of the pain catastrophizing scale in patients with chronic pain and their spouses. Rehabil Psychol 2020; 66:50-56. [PMID: 32250134 DOI: 10.1037/rep0000322] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
PURPOSE This study was designed to investigate the equivalency and factor structure of the patients and significant others' version of pain catastrophizing scales in patients with chronic pain and their spouses who are not in pain. METHOD Participants were 142 married couples in which 1 spouse reported chronic musculoskeletal pain. Confirmatory factor analyses were used to compare 4 models of pain catastrophizing, and to examine the invariance of the factor structure of the PCS-Patient version and the PCS-Significant other version in patients with chronic pain and their spouses. RESULTS The results indicated that the 2-factor oblique model provided an adequate fit to the data of both patients with chronic pain and their spouses who are not in pain. Moreover, it was found that when gender was controlled, the hypothesized factor structures of the PCS-patient version and the PCS-Significant other version were invariant. Indeed, it was revealed that the PCS-Patient version and the PCS-Significant other version measure the same factors in couples in which 1 of them have a chronic pain condition. CONCLUSIONS The findings of the current study showed that the 2-factor oblique model is the best fit in both samples (i.e., patients with chronic pain and their spouses). Therefore, it can be suggested that these versions can be used among patients and their spouses and the findings regarding them can be compared. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
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Akbari F, Azadbakht M, Dashti A, Vahedi L, Davoodi A. Effect of Prunus Mahaleb L. Seed Extract on Ethylene glycol- and Ammonium Chloride-Induced Urolithiasis in BALB/c Mice. Iran J Med Sci 2020; 45:134-139. [PMID: 32210490 PMCID: PMC7071555 DOI: 10.30476/ijms.2019.45774] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 09/24/2018] [Accepted: 10/07/2018] [Indexed: 11/19/2022]
Abstract
BACKGROUND Kidney stone disease can be quite painful, recurrent, and affects many people. Despite advances in drug therapy, there is still a need to find effective drugs with fewer complications for long-term treatment of kidney stones and to prevent its recurrence. The present study aimed to evaluate the effect of Prunus Mahaleb L. seed extract on ethylene glycol- and ammonium chloride-induced urolithiasis in BALB/c mice. METHODS The Prunus Mahaleb L. seeds were collected in Mashhad (Iran) in June 2017. Urolithiasis was induced in male BALB/c mice by adding ethylene glycol (EG) 0.75% (v/v) and ammonium chloride (AC) 2% (w/v) to their drinking water for 21 consecutive days. A total of 72 animals were randomly divided into six groups of twelve animals each. Group 1 received purified water as control; group 2 received EG+AC in drinking water; groups 3-5 received the extracts by gavage in dosages of 100, 300, 500 mg/kg body weight, respectively; and group 6 received 888 mg/kg Sankol by gavage. Note that urolithiasis was induced in groups 3-6 in the same manner as in group 2. The data were analyzed using GraphPad Prism Software (version 5.01). RESULTS The group receiving Prunus Mahaleb L. extract in a 500 mg/kg dose responded better to the treatment and less damage to the kidney tissue was observed. The serum parameters remarkably decreased in the calculi-induced animals. Besides, the acute toxicity test showed that the use of the extract was safe in animals. CONCLUSION The results showed that the use of Prunus Mahaleb L. extract effectively prevented the formation of kidney stones.
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Affiliation(s)
- Fatemeh Akbari
- Student Research Committee, School of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mohammad Azadbakht
- Department of Pharmacognosy, School of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ayat Dashti
- Department of Toxicology, School of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Lale Vahedi
- Department of Pathology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ali Davoodi
- Department of Pharmacognosy, School of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
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Akbari F, Rezaei M, Khatony A. Effect Of Peppermint Essence On The Pain And Anxiety Caused By Intravenous Catheterization In Cardiac Patients: A Randomized Controlled Trial. J Pain Res 2019; 12:2933-2939. [PMID: 31695482 PMCID: PMC6814313 DOI: 10.2147/jpr.s226312] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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: 08/07/2019] [Accepted: 09/30/2019] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND The effects of the peppermint essence on the pain and anxiety caused by intravenous catheterization have not been studied yet. The aim of this study was to determine effect of inhaling peppermint essence on the pain and anxiety. METHODS In this study, 80 cardiac patients were selected through convenient sampling and randomly allocated to aromatherapy and control groups. Data gathering tools were numeric pain rating scale and visual analogue scale for anxiety. The aromatherapy and control groups received inhaled aromatherapy with peppermint essence and distilled water, respectively. RESULTS Mean severity of the pain in the aromatherapy and control groups was 2.95±0.98 and 3.42±1.33, respectively. The difference was statistically significant (p=0.048). The mean score of anxiety before the intervention in the aromatherapy and control groups was 3.75±1.08 and 4.70±1.43, respectively; these figures after the intervention were 2.32±0.97 and 2.10±1.42, respectively. The two groups were not significantly different before and after the intervention in terms of the level of anxiety. However, the level of anxiety before and after the intervention was significantly different in each group (p<0.001). CONCLUSION Aromatherapy attenuated the pain and anxiety caused by intravenous catheterization. Before catheterization, peppermint essence aromatherapy is recommended.
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Affiliation(s)
- Fatemeh Akbari
- Students Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mansour Rezaei
- Social Development and Health Promotion Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Alireza Khatony
- Clinical Research Development Center, Imam Reza Hospital, Kermanshah University of Medical Sciences, Kermanshah, Iran
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Dowlatabadi H, Mowlavi A, Ghorbani M, Mohammadi S, Akbari F. Benchmarking of Siemens Linac in Electron Modes: 8-14 MeV Electron Beams. J Biomed Phys Eng 2018; 8:157-166. [PMID: 29951442 PMCID: PMC6015647] [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: 07/06/2017] [Accepted: 07/27/2017] [Indexed: 11/23/2022]
Abstract
BACKGROUND Radiation therapy using electron beams is a promising method due to its physical dose distribution. Monte Carlo (MC) code is the best and most accurate technique for forespeaking the distribution of dose in radiation treatment of patients. MATERIAL AND METHODS We report an MC simulation of a linac head and depth dose on central axis, along with profile calculations. The purpose of the present research is to carefully analyze the application of MC methods for the calculation of dosimetric parameters for electron beams with energies of 8-14 MeV at a Siemens Primus linac. The principal components of the linac head were simulated using MCNPX code for different applicators. RESULTS The consequences of measurements and simulations revealed a good agreement. Gamma index values were below 1 for most points, for all energy values and all applicators in percent depth dose and dose profile computations. A number of states exhibited rather large gamma indices; these points were located at the tail of the percent depth dose graph; these points were less used in in radiotherapy. In the dose profile graph, gamma indices of most parts were below 1. The discrepancies between the simulation results and measurements in terms of Zmax, R90, R80 and R50 were insignificant. The results of Monte Carlo simulations showed a good agreement with the measurements. CONCLUSION The software can be used for simulating electron modes of a Siemens Primus linac when direct experimental measurements are not feasible.
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Affiliation(s)
- H. Dowlatabadi
- Physics Department, School of Sciences, Payame Noor University of Mashhad, Mashhad, Iran
| | - A.A. Mowlavi
- Physics Department, School of Sciences, Hakim Sabzevari University, Sabzevar, Iran
,ICTP, Associate Federation Scheme, Medical Physics Field, Trieste, Italy
| | - M. Ghorbani
- Biomedical Engineering and Medical Physics Department, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - S. Mohammadi
- Physics Department, School of Sciences, Payame Noor University of Mashhad, Mashhad, Iran
| | - F. Akbari
- Medical Physics Department, Reza Radiation Oncology Center, Mashhad, Iran
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Naderi A, Zagatto AM, Akbari F, Sakinepoor A. Body composition and lipid profile of regular recreational table tennis participants: a cross-sectional study of older adult men. Sport Sci Health 2018. [DOI: 10.1007/s11332-017-0422-1] [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: 12/17/2022]
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Azizi M, Mowlavi AA, Ghorbani M, Azadegan B, Akbari F. Dosimetric evaluation of scattered and attenuated radiation due to dental restorations in head and neck radiotherapy. Journal of Radiation Research and Applied Sciences 2018. [DOI: 10.1016/j.jrras.2017.10.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Akbari F, Arminian A, Kahrizi D, Fazeli A. Effect of nitrogen sources on some morphological characteristics of in vitro stevia rebaudiana Bertoni. ACTA ACUST UNITED AC 2017; 63:107-111. [PMID: 28364791 DOI: 10.14715/cmb/2017.63.2.17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Indexed: 11/18/2022]
Abstract
Stevia rebaudiana Bertoni belongs to Asteraceae family that leaves 200-300 times sweeter than sugar. Low seed fertility is one of the most important problems in Stevia production. So, Plant tissue culture is an efficient method for mass propagation of Stevia. In this research, we studied the effect of various concentrations of nitrogen on some morphological traits of stevia under in vitro conditions. We used axillary nodes as explants and they were cultured on Murashige and Skoog (MS) medium containing inorganic nitrogen sources i.e. NH4NO3(0, 825 and 1650 mg/l), KNO3(0, 950 and 1900 mg/l) were observed. The cultures were kept for 4 weeks at a temperature of 25±2°C with a photoperiod of 16/8 hour low light/dark each day. Maximum shoot length (89.33 mm), dry weight of plants (0.10 mg) and leaf fresh weight (0.42 mg) was observed on MS medium with 1650 mg/l NH4NO3 and 950 mg/l KNO3. Minimum shoot length (6.13 mm), root length (6.60 mm), leaf number (4.26), leaf dry weight (0.01 mg), leaf fresh weight (0.05 mg), total dry and fresh weight (0.02 and 0.15 mg) and growth rate was observed on a MS medium without nitrogen sources. Moreover, presence of nitrogen sources increases both shooting and rooting in Stevia rebaudiana Bertoni.
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Affiliation(s)
- F Akbari
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Ilam University, Ilam, Iran
| | - A Arminian
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Ilam University, Ilam, Iran
| | - D Kahrizi
- Department of Agronomy and Plant Breeding, Razi University, Kermanshah, Iran
| | - A Fazeli
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Ilam University, Ilam, Iran
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27
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Dorri Giv M, Bahreini Toosi MH, Aghamiri SMR, Akbari F, Taeb S. Calculation of Thyroid Dose with Planner System and Evaluation of Thyroid Function after Radiotherapy for Patients with Breast Cancer. J Biomed Phys Eng 2016; 6:220-234. [PMID: 28144591 PMCID: PMC5219573] [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: 10/18/2015] [Accepted: 10/26/2015] [Indexed: 06/06/2023]
Abstract
BACKGROUND Much research has widely been conducted into thyroid hormones levels following radiotherapy for breast cancer. Consequently, in this study, we evaluated to relate the rate of thyroid hormones levels with the dose distribution among breast cancer patients. MATERIAL AND METHODS Thirty patients were treated with 4-field breast cancer radiotherapy. The dose volume histograms, the volume percentage of the thyroid absorbing respectively 20, 30, 40 and 50 Gy were then estimated (V20, V30, V40 and V50) together with the individual average thyroid dose over the whole gland derived from their computed tomography-based treatment plans. Then, in serum samples triiodothyronine [T3], thyroxine [T4], thyroid-stimulating hormone [TSH] of the patients were measured before and after radiotherapy. RESULTS There were no significant differences in thyroid hormones levels before and after radiotherapy for patients with breast cancer (P value >.05). CONCLUSION On the balance, we understood that thyroid stimulating hormones levels did not change before and after cancer breast radiotherapy.
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Affiliation(s)
- M Dorri Giv
- Radiology and Radiotherapy Department, Faculty of Paramedical, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - M H Bahreini Toosi
- Medical Physics Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - S M R Aghamiri
- Radiology and Radiotherapy Department, Faculty of Paramedical, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - F Akbari
- Medical Physics Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - S Taeb
- MSc of Radiation Biology and Orotection, Shiraz University of Medical Science, Shiraz, Iran
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Dorri Giv M, Bahreini Toosi M, Aghamiri S, Akbari F, Taeb S. Calculation of Thyroid Dose with Planner System and Evaluation of Thyroid Function after Radiotherapy for Patients with Breast Cancer. J Biomed Phys Eng 2016; 6:229-234. [PMID: 28144592 PMCID: PMC5251202] [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: 10/18/2015] [Accepted: 10/26/2015] [Indexed: 12/01/2022]
Abstract
BACKGROUND Much research has widely been conducted into thyroid hormones levels following radiotherapy for breast cancer. Consequently, in this study, we evaluated to relate the rate of thyroid hormones levels with the dose distribution among breast cancer patients. MATERIAL AND METHODS Thirty patients were treated with 4-field breast cancer radiotherapy. The dose volume histograms, the volume percentage of the thyroid absorbing respectively 20, 30, 40 and 50 Gy were then estimated (V20, V30, V40 and V50) together with the individual average thyroid dose over the whole gland derived from their computed tomography-based treatment plans. Then, in serum samples triiodothyronine [T3], thyroxine [T4], thyroid-stimulating hormone [TSH] of the patients were measured before and after radiotherapy. RESULTS There were no significant differences in thyroid hormones levels before and after radiotherapy for patients with breast cancer (P value >.05). CONCLUSION On the balance, we understood that thyroid stimulating hormones levels did not change before and after cancer breast radiotherapy.
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Affiliation(s)
- M. Dorri Giv
- Radiology and Radiotherapy Department, Faculty of Paramedical, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - M.H. Bahreini Toosi
- Medical Physics Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - S.M.R. Aghamiri
- Radiology and Radiotherapy Department, Faculty of Paramedical, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - F. Akbari
- Medical Physics Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - S. Taeb
- MSc of Radiation Biology and Orotection, Shiraz University of Medical Science, Shiraz, Iran
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Bahreyni Toosi M, Mohamadian N, Ghorbani M, Khorshidi F, Akbari F, Knaup C. Skin Dosimetry in Radiotherapy of Breast Cancer: a Comparison between EBT and EBT3 Radiochromic Films. J Biomed Phys Eng 2016; 6:51-60. [PMID: 27672625 PMCID: PMC5022755] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Accepted: 08/30/2015] [Indexed: 06/06/2023]
Abstract
OBJECTIVE Radiochromic EBT3 film is a later generation of radiochromic films. The aim of this study is to compare EBT and EBT3 radiochromic films in radiotherapy fields of breast cancer. METHODS A RANDO phantom was irradiated by a 6 MV Siemens Primus linac with medial and lateral fields of radiotherapy of breast cancer. Dosimetry was performed in various points in the fields using EBT and EBT3 films. Films were scanned by a Microtek color scanner. Dose values from two films in corresponding points were compared. RESULTS In the investigation of calibration, net optical density (NOD) of EBT radiochromic is more than the EBT3 radiochromic film. The highest percentage difference between NODs of two films is related to 0.75 Gy and equals to 14.19%. The lowest value is related to 0.2 Gy dose and is equal to 3.31%. The highest percentage difference between two films on the RANDO phantom in breast cancer fields is 13.51% and the minimum value is equal to 0.33%. CONCLUSION From the comparison between the two films, most of the points show differences in dose in the measurements in fields of breast cancer radiotherapy. These differences are attributed to the thickness of the active layers, the overall thickness of the films, and the difference in the calibration fitted functions. The advantage of EBT film over EBT3 is a higher sensitivity; on the other hand EBT3 film allows to use its both sides in the scanning process and it is a new version of this film type.
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Affiliation(s)
- M.T. Bahreyni Toosi
- Medical Physics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - N. Mohamadian
- Medical Physics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - M. Ghorbani
- Medical Physics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - F. Khorshidi
- Medical Physics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - F. Akbari
- Medical Physics Department, Reza Radiation Oncology Center, Mashhad, Iran
| | - C. Knaup
- Comprehensive Cancer Centers of Nevada, Las Vegas, NV, USA
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Biria M, Nazemi B, Akbari F, Rahmati A. Freeman-Sheldon syndrome: a case report. Eur J Paediatr Dent 2015; 16:311-314. [PMID: 26637256] [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: 06/05/2023]
Abstract
Freeman-Sheldon syndrome is a rare hereditary disorder characterised by three basic abnormalities, namely microstomia, camptodactyly with ulnar deviation of the fingers, and clubfoot. The majority of these patients have microstomia and dental crowding, making oral hygiene difficult and increasing the risk of caries. Treatment of these patients requires a coordinated effort by a team of specialists, including a paediatrician, an anaesthesiologist, a plastic surgeon, a paediatric dentist, and an orthodontist. Herein, we describe dental problems of a child with Freeman-Sheldon syndrome and the treatment procedures performed.
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Affiliation(s)
- M Biria
- Department of Paediatric Dentistry, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - B Nazemi
- Department of Paediatric Dentistry, School of Dentistry, Zanjan University of Medical Sciences, Zanjan, Iran
| | - F Akbari
- Department of Paediatric Dentistry, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - A Rahmati
- Department of Paediatric Dentistry, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Bahreyni Toossi MT, Ghorbani M, Akbari F, Mehrpouyan M, Sobhkhiz Sabet L. Evaluation of the effect of tooth and dental restoration material on electron dose distribution and production of photon contamination in electron beam radiotherapy. Australas Phys Eng Sci Med 2015; 39:113-22. [PMID: 26581762 DOI: 10.1007/s13246-015-0404-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 11/05/2015] [Indexed: 11/26/2022]
Abstract
The aim of this study is to evaluate the effect of tooth and dental restoration materials on electron dose distribution and photon contamination production in electron beams of a medical linac. This evaluation was performed on 8, 12 and 14 MeV electron beams of a Siemens Primus linac. MCNPX Monte Carlo code was utilized and a 10 × 10 cm(2) applicator was simulated in the cases of tooth and combinations of tooth and Ceramco C3 ceramic veneer, tooth and Eclipse alloy and tooth and amalgam restoration materials in a soft tissue phantom. The relative electron and photon contamination doses were calculated for these materials. The presence of tooth and dental restoration material changed the electron dose distribution and photon contamination in phantom, depending on the type of the restoration material and electron beam's energy. The maximum relative electron dose was 1.07 in the presence of tooth including amalgam for 14 MeV electron beam. When 100.00 cGy was prescribed for the reference point, the maximum absolute electron dose was 105.10 cGy in the presence of amalgam for 12 MeV electron beam and the maximum absolute photon contamination dose was 376.67 μGy for tooth in 14 MeV electron beam. The change in electron dose distribution should be considered in treatment planning, when teeth are irradiated in electron beam radiotherapy. If treatment planning can be performed in such a way that the teeth are excluded from primary irradiation, the potential errors in dose delivery to the tumour and normal tissues can be avoided.
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Affiliation(s)
| | - Mahdi Ghorbani
- Medical Physics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Fatemeh Akbari
- Medical Physics Department, Reza Radiation Oncology Center, Mashhad, Iran
| | - Mohammad Mehrpouyan
- Bioinformatics Research Center, Sabzevar University of Medical Sciences, Sabzevar, Iran.
- Radiology and Radiotherapy Department, Faculty of Medicine, Sabzevar University of Medical Sciences, Sabzevar, Iran.
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Akbari F, Khodadadi S, Asgari S, Shirzad H, Mirhoseini M, Shahinfard N, Rafieian-Kopaei M. A comparative study on hypoglycemic properties, lipid profile and bioactive components of hydro-alcoholic extracts of cooked and raw Brassica napus. J Nephropharmacol 2015; 5:86-90. [PMID: 28197509 PMCID: PMC5297572] [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: 07/07/2015] [Accepted: 08/06/2015] [Indexed: 11/12/2022] Open
Abstract
Introduction: Many plants with anti-oxidant properties proved to be effective on diabetes treatment. Brassica napus (turnip) is an anti-oxidant plant consumed raw or cooked. In this study, we examined and compared hypoglycemic and hypolipidemic properties of raw and cooked Brassica napus in diabetic rats. Objectives: Due to measuring bioactive component of Brassica napus as a rich source of flavonoid we investigate the hypoglycemic properties in raw and cooked type. Material and Methods: For this experimental study, 50 male Wistar rats weighing 200-250 g were designated into five groups of 10 consist of control, diabetic control, diabetic cooked turnip, diabetic raw turnip, and diabetic glibenclamide. The alloxan-induced diabetic rats received extracts orally for 4 weeks. Then, the serum biochemical factors were measured and compared statisticaly by analysis of variance (ANOVA) test. Results: Serum glucose, triglyceride (TG), cholesterol, and low density lipoprotein cholesterol (LDL-C) were significantly decreased in cooked and raw turnip rats compared to control ones. Cooked and raw Brassica napus extracts both helped high density lipoprotein cholesterol (HDL-C) increase; cooked turnip competency was superior in view of cholesterol and LDL-C decrease as well as HDL-C increase (P < 0.05). The mean difference in glucose and TG decrease was not significant between diabetic cooked turnip and diabetic raw turnip rats. Conclusion: Improving the blood glucose and lipid levels diabetic rats, in this study, may indicate that both raw and cooked Brassica napus extracts (especially the cooked one) may be beneficial in diabetic patients.
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Affiliation(s)
- Fatemeh Akbari
- 1Medical Plants Research Center, Shahrekord University of Medical Sciences, Sharekord, Iran
| | | | - Sedigheh Asgari
- 3Isfahan Cardiovascular Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hedaytolah Shirzad
- 1Medical Plants Research Center, Shahrekord University of Medical Sciences, Sharekord, Iran
| | - Mahmoud Mirhoseini
- 1Medical Plants Research Center, Shahrekord University of Medical Sciences, Sharekord, Iran
| | - Najmeh Shahinfard
- 1Medical Plants Research Center, Shahrekord University of Medical Sciences, Sharekord, Iran
| | - Mahmoud Rafieian-Kopaei
- 1Medical Plants Research Center, Shahrekord University of Medical Sciences, Sharekord, Iran
,Corresponding author: Prof. Mahmoud Rafieian-Koopaei,
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Salehi-Abargouei A, Akbari F, Bellissimo N, Azadbakht L. Dietary diversity score and obesity: a systematic review and meta-analysis of observational studies. Eur J Clin Nutr 2015. [DOI: 10.1038/ejcn.2015.118] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Akbari F, Shahinfard N, Mirhoseini M, Shirzad H, Heidarian E, Hajian S, Rafieian-Kopaei M. Impacts of Hibiscus esculentus extract on glucose and lipid profile of diabetic rats. J Nephropharmacol 2015; 5:80-85. [PMID: 28197508 PMCID: PMC5297571] [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: 04/01/2015] [Accepted: 05/08/2015] [Indexed: 10/30/2022] Open
Abstract
Introduction:Hibiscus esculentus is capable to produce various molecules including phenolic and flavonoid compounds, phytosteroids with antioxidant property. Therefore, it has the potential to show antidiabetic activities. Objectives: This study was aimed to evaluate the impacts of Hibiscus esculentus extract on glucose and lipid profile of diabetic rats. The flavonoid, flavonol and phenolic components, as well as antioxidant activity of Hibiscus esculentus was also evaluated. Materials and Methods: In a preclinical study, 40 male Wistar rats were designated into four 10-member groups, i.e., control, diabetic control, diabetic Hibiscus esculentus, and diabetic glibenclamide. The Alloxan-induced diabetic rats received extracts orally for four weeks. Then, the serum biochemical factors were measured and compared by analysis of variance (ANOVA). Results: Serum glucose, triglyceride (TG), cholesterol, and low density lipoprotein cholesterol (LDL-C) were significantly decreased and high density lipoprotein cholesterol (HDL-C) increased in diabetic Hibiscus esculentus rats compared to diabetic control ones (P < 0.05). Conclusion: Improving the blood glucose and lipid profile in diabetic rats indicates that Hibiscus esculentus extract might be beneficial in diabetic patients.
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Affiliation(s)
- Fatemeh Akbari
- Medical Plants Research Center, Shahrekord University of Medical Sciences, Sharekord, Iran
| | - Najmeh Shahinfard
- Medical Plants Research Center, Shahrekord University of Medical Sciences, Sharekord, Iran
| | - Mahmoud Mirhoseini
- Medical Plants Research Center, Shahrekord University of Medical Sciences, Sharekord, Iran
| | - Hedayatollah Shirzad
- Medical Plants Research Center, Shahrekord University of Medical Sciences, Sharekord, Iran
| | - Esfandiar Heidarian
- Clinical Biochemistry Research Center, Shahrekord University of Medical Sciences, Sharekord, Iran
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Nazemi-Gelyan H, Hasanzadeh H, Makhdumi Y, Abdollahi S, Akbari F, Varshoee-Tabrizi F, Almasrou H, Nikoofar A, Rezaei-Tavirani M. Evaluation of Organs at Risk's Dose in External Radiotherapy of Brain Tumors. Iran J Cancer Prev 2015; 8:47-52. [PMID: 25821571 PMCID: PMC4360351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Accepted: 12/14/2014] [Indexed: 11/03/2022]
Abstract
BACKGROUND Radiotherapy plays an important role in the management of most malignant and many benign primary central nervous system (CNS) tumors. Radiotherapy affects both tumor cells and uninvolved normal cells; so, it is important to estimate absorbed dose to organs at risk in this kind of treatment. The aim of this study was to determine the absorbed dose to chiasma, lens, optic nerve, retina, parotid, thyroid and submandibular gland in frontal lobe brain tumors radiotherapy based on treatment planning system (TPS) calculation and direct measurement on the phantom. METHODS A head and neck phantom was constructed using natural human bone and combination of paraffin wax and Sodium Chloride (NaCl) as tissue-equivalent material. Six cylinders were made of phantom material which had cavities to insert Thermoluminescent Dosimeters (TLDs) at several depths in order to measure absorbed dose to chiasma, lens, optic nerve, retina, parotid, thyroid and submandibular gland. Three routine conventional plans associated with tumors of this region and a new purposed technique were performed on the phantom and dose distribution and absorbed dose to critical organs were compared using treatment planning system (TPS) calculation and direct measurement on the phantom. RESULTS Absorbed doses were measured with calibrated TLDs and are expressed in centigray (cGy). In all techniques absorbed dose to all organs except the lenses were at their tolerance dose levels and in the new purposed technique, absorbed dose to chiasma was significantly reduced. CONCLUSION Our findings showed differences in the range of 1-5% in all techniques between TPS calculation and direct measurements for all organs except submandibular glands and thyroid. Because submandibular glands and thyroid are far from primary radiation field, TLD reading in these regions although small but differs from TPS calculation which shows very smaller doses. This might be due to scattered radiation which is not well considered in the TPS. In the new technique, because the chiasma is out of the radiation field, absorbed dose was reduced significantly.
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Affiliation(s)
| | - Hadi Hasanzadeh
- Dept. of Medical Physics, Semnan University of Medical Sciences, Semnan, Iran,Corresponding Author:
Hadi Hasanzadeh, PhD;
Assistant Professor of Medical Physics
Tel: (+98) 2333451337
| | - Yasha Makhdumi
- Reza Radiotherapy Oncology Charity Center, Mashhad, Iran
| | - Sara Abdollahi
- Dept. of Radiotherapy, Iran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Akbari
- Reza Radiotherapy Oncology Charity Center, Mashhad, Iran
| | | | | | - Alireza Nikoofar
- Dept. of Radiotherapy, Iran University of Medical Sciences, Tehran, Iran
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Mohammadi N, Miri-Hakimabad H, Rafat-Motavalli L, Akbari F, Abdollahi S. Patient-specific voxel phantom dosimetry during the prostate treatment with high-energy linac. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3872-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Abolhassani H, Akbari F, Mirminachi B, Bazregari S, Hedayat E, Rezaei N, Aghamohammadi A. Morbidity and mortality of Iranian patients with hyper IgM syndrome: a clinical analysis. Iran J Immunol 2014; 11:123-133. [PMID: 24975969] [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: 06/03/2023]
Abstract
BACKGROUND Defects in B cell class switch recombination (CSR) are a heterogeneous and yet very uncommon group of disorders which all have a genetic basis uniformly leading to hyper IgM (HIgM) syndrome. Due to the rare frequency of these conditions, a very small number of case series have been conducted on the affected patients. OBJECTIVE To shed some light on the morbidity and mortality regarding a relatively large cohort of diagnosed CSR defective Iranian patients. METHODS This study was performed using demographic information, laboratory findings and clinical data obtained from an observation of 33 Iranian patients of different ethnicities referred from all medical centers of Iran to the Children's Medical Center Hospital, pediatrics center of excellence, Tehran, Iran; of which 28 were males and 5 were females. RESULTS Our patients mean age at the onset of symptoms was 1.8 ± 0.2 years; they were diagnosed with a mean delay of 4.4 ± 3.3 years and followed for a mean time of 5.7 ± 4.8 years. The most prominent clinical features observed were multi-organ infections, affecting mostly the respiratory system, followed by lymphoproliferative and autoimmune disorders, the latter being of much higher frequency (44%) in our study than the reported frequency in previous reports. The three year survival rate for our enrolled patients was 67.9%. CONCLUSIONS Based on our findings, the most common cause of death in HIgM patients is respiratory failure. The molecular mechanism behind the nature of the CSR defective patients in Iran is more compatible with autosomal recessive mutations rather than X-linked HIgM syndrome which is in contrast with other large cohorts of patients with CSR defect.
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Affiliation(s)
- Hassan Abolhassani
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center, Tehran University of Medical Science, Tehran, Iran e-mail:
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Bahreyni Toossi MT, Zare H, Bayani Roodi S, Hashemi M, Akbari F, Malekzadeh M. Towards proposition of a diagnostic reference level for mammographic examination in the greater Khorasan Province, Iran. Radiat Prot Dosimetry 2013; 155:96-99. [PMID: 23209184 DOI: 10.1093/rpd/ncs317] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Although, over the past few years, the application of mammography has risen up sharply in Iran, very little, if any, has been reported of the extent of patient's dose from this type of imaging. The purpose of this study was to establish local diagnostic reference level (DRL) arising from mammography in the great Khorasan province of Iran. It is generally assumed that the glandular tissue is the most vulnerable type of breast tissue. Therefore, the mean glandular dose (MGD) has been widely accepted as the most appropriate dosimetric quantity to predict the risk of radiation-induced cancer. Literary, DRL for mammography is defined as the 75th percentile of MGD distribution. In Khorasan province, 7 out of 40 centres were randomly selected. In this work, 100 patients were studied. Thermoluminescence dosimeters have been used to measure entrance surface doses (ESDs). Since, it is difficult to directly measure MGD, Monte Carlo model-based conversion factors were utilised to conclude MGD from ESD. The results have revealed that patients dose is varied widely. The measured ESDs ranged from 0.74 to 19.81 mGy for the craniocaudal (CC) view and 1.20 to 25.79 mGy for the mediolateral oblique (MLO) view. The average MGDs per image were 0.88 and 1.11 mGy for CC and MLO views, respectively. Based on the internationally adopted definition, DRL arising from mammography tests for Khorasan is 1.33 mGy. Implementation of a dose reduction programme is suggested because of the large variations observed in patient MGD values. In this study, the DRL value is significantly lower than the corresponding values suggested by other researchers elsewhere.
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Affiliation(s)
- M T Bahreyni Toossi
- Department of Medical Physics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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Akbari F, Damaliamiri M, Haghgouyan H. 631 – Bullying discourse to survive in the street. Eur Psychiatry 2013. [DOI: 10.1016/s0924-9338(13)75890-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Akbari F, Mohammadi M. P-311 - Retarded sexual maturity and adolescent conflicts. Eur Psychiatry 2012. [DOI: 10.1016/s0924-9338(12)74478-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Pourmand G, Hashemian E, Salsabili N, Saraji A, Mehrsai A, Akbari F. UP-2.055: Factors Influencing the Outcome of ICSI in Azoospermic Patients. Urology 2009. [DOI: 10.1016/j.urology.2009.07.274] [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: 10/20/2022]
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Abstract
OBJECTIVE To assess the effect of successful renal transplantation on semen variables, sexual function and sex hormone profiles in a clinical trial. PATIENTS AND METHODS Thirty patients on haemodialysis underwent renal transplantation; before and after surgery, their sperm density, motility and morphology were analysed, follicle-stimulating hormone (FSH), luteinizing hormone (LH), prolactin and testosterone levels measured and compared, and sexual function assessed using an abbreviated version of the International Index of Erectile Function (IIEF), with a successful outcome defined as a level of satisfaction of 4 or 5 on a 5-point scale. The paired t-test was used to assess the statistically significance of differences in all analyses. RESULTS Sperm motility improved significantly (P < 0.001) but there were no significant changes in morphology or density (P = 0.33 and 0.068, respectively). Testosterone levels increased and FSH, LH and prolactin decreased significantly (P < 0.05) after renal transplantation. The IIEF showed that of the 30 patients, 14 were impotent before surgery and only six remained so afterward (P < 0.05). CONCLUSION Although sperm morphology and density did not improve after renal transplantation, there were highly significant changes in sperm motility. Hormonal levels in patients on haemodialysis improved after transplantation and returned to nearly normal; sexual function was also significantly better. Further studies are needed to confirm these results.
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Affiliation(s)
- F Akbari
- IVF Unit, Mirzakoochak Khan Hospital, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
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