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Bagheri Lankarani K, Sadidoost A, Fattahi M, Amirizadeh Fard S, Mokarram P. The Potential Role of Autophagy in Progression of Liver Fibrosis in Chronic Hepatitis B Patients Receiving Antiviral Treatment: A Brief Report. Iran J Med Sci 2024; 49:196-200. [PMID: 38584654 PMCID: PMC10997855 DOI: 10.30476/ijms.2023.96588.2813] [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] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 01/06/2023] [Accepted: 02/16/2023] [Indexed: 04/09/2024]
Abstract
Despite antiviral treatment, some patients with chronic hepatitis B (CHB) progress to cirrhosis. Enhancement of autophagy was implicated in the proliferation of hepatitis B in hepatocytes. This study aimed to evaluate the potential role of autophagy in the progression of liver fibrosis in patients receiving antiviral treatments and having completely inhibited viral replication. This descriptive-analytical study was designed and conducted in 2020 at Mottahhari Hepatitis Clinic affiliated with Shiraz University of Medical Science (Shiraz, Iran). Patients who were on anti-hepatitis B nucleotide treatments for at least two years, and those who were not cirrhotic at baseline but later progressed to cirrhosis were identified to be included in the case group. Besides, for the control group, patients on the nucleotide regimens who did not have cirrhosis at baseline or during follow-up were randomly selected. Ultimately, 16 cases and 14 controls were included in the study. Data were analyzed using SPSS software, and P<0.05 was considered statistically significant. Serum Beclin-1 and LC3 levels were compared between the two groups using enzyme-linked immunosorbent assays. The t test was used to assess the statistical differences between the case and control groups. Beclin-1 level was significantly higher in cirrhosis patients than the control group (1283±244 vs. 1063±257, P=0.024). However, there was no statistical difference between the level of LC3 in the cirrhotic group (168±31) and the control group (150±16) (P=0.065). Autophagy may have a role in the progression of cirrhosis in patients with CHB. Future larger prospective studies are required to determine the effect of blocking on the progression of liver disease in this population A preprint of this study was published at https://www.researchsquare.com/article/rs-1435490/v1.pdf.
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Affiliation(s)
- Kamran Bagheri Lankarani
- Department of Internal Medicine, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Atefeh Sadidoost
- Department of Internal Medicine, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammadreza Fattahi
- Department of Internal Medicine, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Saeid Amirizadeh Fard
- Gastroenterology and Hepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Pooneh Mokarram
- Autophagy Research Center, Department of Biochemistry, Shiraz University of Medical Sciences, Shiraz, Iran
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2
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Fattahi M, Hsu CY, Ali AO, Mahmoud ZH, Dang N, Kianfar E. Severe plastic deformation: Nanostructured materials, metal-based and polymer-based nanocomposites: A review. Heliyon 2023; 9:e22559. [PMID: 38107327 PMCID: PMC10724578 DOI: 10.1016/j.heliyon.2023.e22559] [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: 08/17/2023] [Revised: 10/26/2023] [Accepted: 11/15/2023] [Indexed: 12/19/2023] Open
Abstract
Significant deformation of the metal structure can be achieved without breaking or cracking the metal. There are several methods for deformation of metal plastics. The most important of these methods are angular channel pressing process, high-pressure torsion, multidirectional forging process, extrusion-cyclic compression process, cumulative climbing connection process, consecutive concreting and smoothing method, high-pressure pipe torsion. The nanocomposite is a multiphase material which the size of one of its phases is less than 100 nm in at least one dimension. Due to some unique properties, metal-based nanocomposites are widely used in engineering applications such as the automotive and aerospace industries. Polymer-based nanocomposites are two-phase systems with polymer-based and reinforcing phases (usually ceramic). These materials have a simpler synthesis process than metal-based nanocomposites and are used in a variety of applications such as the aerospace industry, gas pipelines, and sensors. Severe plastic deformation (SPD) is known to be the best method for producing bulk ultrafine grained and nanostructured materials with excellent properties. Different Severe plastic deformation methods were developed that are suitable for sheet and bulk solid materials. During the past decade, efforts have been made to create effective Severe plastic deformation processes suitable for producing cylindrical tubes. In this paper, we review Severe plastic deformation processes intended to nanostructured tubes, and their effects on material properties and severe plastic deformation is briefly introduced and its common methods for bulk materials, sheets, and pipes, as well as metal background nanocomposites, are concisely introduced and their microstructural and mechanical properties are discussed. The paper will focus on introduction of the tube Severe plastic deformation processes, and then comparison of them based on their advantages and disadvantages from the viewpoints of processing and properties.
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Affiliation(s)
- M. Fattahi
- Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam
- School of Engineering & Technology, Duy Tan University, Da Nang, Viet Nam
| | - Chou-Yi Hsu
- Department of pharmacy, Chia Nan University of Pharmacy and Science, Tainan, Taiwan
| | - Anfal Omar Ali
- Ministry of education, general directorate of education in Diyala, third teacher, Bint Al Rafidain secondary school for girls, Iraq
| | - Zaid H. Mahmoud
- Chemistry department, college of science, university of Diyala, Iraq
| | - N.P. Dang
- Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam
- School of Engineering & Technology, Duy Tan University, Da Nang, Viet Nam
| | - Ehsan Kianfar
- Mechanical Engineering Department, Faculty of Engineering and Pure Sciences Istanbul Medeniyet University, Istanbul, Turkey
- Department of Chemical Engineering, Arak Branch, Islamic Azad University, Arak, Iran
- Young Researchers and Elite Club, Gachsaran Branch, Islamic Azad University, Gachsaran, Iran
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Abdollahi SA, Ranjbar SF, Aminian S, Fattahi M, Uyen PD. Application of multi-extruded fuel injectors for mixing enhancement of hydrogen gas at scramjet engine: computational study. Sci Rep 2023; 13:18839. [PMID: 37914818 PMCID: PMC10620217 DOI: 10.1038/s41598-023-46217-6] [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: 09/28/2023] [Accepted: 10/30/2023] [Indexed: 11/03/2023] Open
Abstract
Scramjet engines are considered a highly promising technology for improving high-speed flight. In this study, we investigate the effects of using multi-extruded nozzles on fuel mixing and distribution inside the combustion chamber at supersonic flow. Additionally, we explore the impact of an inner air jet on fuel mixing in annular nozzles. To model fuel penetration in the combustor, we employ a computational technique. Our study compares the roles of three different extruded injectors on fuel diffusion and distribution at supersonic cross-flow. Our findings reveal that the use of an inner air jet increases fuel mixing in the annular jet, while the use of extruded nozzles improves fuel distribution by enhancing the vortices between injectors. These results demonstrate the potential benefits of incorporating multi-extruded nozzles and inner air jets in the design of scramjet engines.
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Affiliation(s)
| | | | - Saman Aminian
- Department of Civil Engineering, College of Engineering, Cihan University-Erbil, Erbil, Iraq
| | - M Fattahi
- Institute of Research and Development, Duy Tan University, Da Nang, Vietnam.
- School of Engineering and Technology, Duy Tan University, Da Nang, Vietnam.
| | - P D Uyen
- Institute of Research and Development, Duy Tan University, Da Nang, Vietnam
- School of Engineering and Technology, Duy Tan University, Da Nang, Vietnam
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Abdollahi SA, Jafari M, Aminian S, Fattahi M, Uyen PD. Fuel mixing enhancement of transverse coaxial air and fuel jet by upstream shock wave on in scramjet engines: numerical study. Sci Rep 2023; 13:18501. [PMID: 37898639 PMCID: PMC10613262 DOI: 10.1038/s41598-023-45810-z] [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: 09/25/2023] [Accepted: 10/24/2023] [Indexed: 10/30/2023] Open
Abstract
In this study, computational fluid dynamics (CFD) is used to disclose the impacts of upstream shock waves on fuel mixing of cross coaxial air and fuel jet at a scramjet engine. This study has tried to investigate the impact of three different lobe injectors (2-lobe, 3-lobe, and 4-lobe nozzle) on the fuel penetrations along the scramjet combustor. The supersonic air stream is M = 4 while cross hydrogen and air jet are released in sonic velocity. This study uses CFD simulations to analyze the effects of upstream shock waves on fuel mixing in the transverse coaxial jet and assess their potential for improving combustion efficiency. The results demonstrate that the usage of upstream shock waves significantly increases shock interactions and augments the vortex region downstream of the jet. Our results show that the impacts of shock waves on the penetration of fuel jet released from the coaxial lobe nozzle are substantial.
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Affiliation(s)
| | - Moharram Jafari
- Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran.
| | - Saman Aminian
- Department of Civil Engineering, College of Engineering, Cihan University-Erbil, Erbil, Iraq
| | - M Fattahi
- Institute of Research and Development, Duy Tan University, Da Nang, Vietnam.
- School of Engineering and Technology, Duy Tan University, Da Nang, Vietnam.
| | - P D Uyen
- Institute of Research and Development, Duy Tan University, Da Nang, Vietnam
- School of Engineering and Technology, Duy Tan University, Da Nang, Vietnam
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Akrami H, Shamsdin SA, Nikmanesh Y, Fattahi M. Effect of Mir-4270 Inhibitor and Mimic on Viability and Stemness Gene Expression in Gastric Cancer Stem-Like Cells Derived from MKN-45 Cell Line. Iran Biomed J 2023; 27:117-25. [PMID: 37070674 DOI: 10.52547/ibj.3788] [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] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
Background MicroRNAs (miRNAs) are significant regulatory factors in stem cell proliferation, and change in miRNA expression influences the cancer stem cell viability and gene expression. Herein, we evaluated the effect of the hsa-miR-4270 inhibitor and mimic on the expression of stem cell markers in GCSCs. Methods GCSCs were isolated from the MKN-45 cell line by a non-adherent surface system. The cells were confirmed by differentiation assays using dexamethasone and insulin as adipogenesis-inducing agents and also using staurosporine as a neural-inducing agent. Isolated GCSCs were treated with different concentrations (0, 15, 20, 25, 30, 40, 50, and 60 nM) of hsa-miR-4270 inhibitor and mimic. The quantity of cell viability was determined by Trypan blue method. Transcription of the stem cell marker genes, including CD44, OCT3/4, SOX2, Nanog, and KLF4, was evaluated by real-time RT-PCR. Results The results showed that GCSCs were differentiated into both adipose cells using dexamethasone and insulin and neural cells by staurosporine. Treatment of GCSCs with hsa-miR-4270 inhibitor decreased the cell viability and downregulated OCT3/4, CD44, and Nanog to 86%, 79%, and 91% respectively. Also, SOX2 and KLF4 were overexpressed to 8.1- and 1.94-folds, respectively. However, hsa-miR-4270 mimic had opposite effects on the cell viability and gene expression of the stem cell markers. Conclusion Effect of hsa-miR-4270 inhibitor and mimic on the expression of the stem cell markers in GCSCs indicated that hsa-miR-4270 stimulates the stemness property of GCSCs, likely through stimulating the development of gastric stem cells.
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Affiliation(s)
- Hassan Akrami
- Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Seyedeh Azra Shamsdin
- Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Yousef Nikmanesh
- Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammadreza Fattahi
- Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Akrami H, Shamsdin SA, Nikmanesh Y, Fattahi M. Effect of Mir-4270 Inhibitor and Mimic on Viability and Stemness in Gastric Cancer Stem-Like Cells Derived from MKN-45 Cell Line. Iran Biomed J 2023; 27:100-7. [PMID: 37070617 PMCID: PMC10314761 DOI: 10.61186/ibj.3851] [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] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 01/18/2022] [Indexed: 12/17/2023]
Abstract
Background MicroRNAs (miRNAs) are significant regulatory factors in stem cell proliferation, and change in miRNA expression influences the cancer stem cell viability and gene expression. Herein, we evaluated the effect of the hsa-miR-4270 inhibitor and its mimic on the expression of stem cell markers in gastric cancer (GC) stem-like cells. Methods GC stem-like cells were isolated from the MKN-45 cell line by a non-adherent surface system. The cells were confirmed by differentiation assays using dexamethasone and insulin as adipogenesis-inducing agents and also Staurosporine as a neural-inducing agent. Isolated GC stem-like cells were treated with different concentrations (0, 15, 20, 25, 30, 40, 50, and 60 nM) of hsa-miR-4270 inhibitor and its mimic. The quantity of cell viability was determined by trypan blue method. Transcription of the stem cell marker genes, including CD44, OCT3/4, SOX2, Nanog, and KLF4, was evaluated by real-time RT-PCR. Results The results showed that GC stem-like cells were differentiated into both adipose cells using dexamethasone and insulin and neural cells by Staurosporine. Treatment of GC stem-like cells with hsa-miR-4270 inhibitor decreased cell viability and downregulated OCT3/4, CD44, and Nanog to 86%, 79%, and 91% respectively. Also, SOX2 and KLF4 were overexpressed to 8.1- and 1.94-folds, respectively. However, hsa-miR-4270 mimic had opposite effects on the cell viability and gene expression of the stem cell markers. Conclusion The effect of hsa-miR-4270 inhibitor and its mimic on the expression of the stem cell markers in GCSCs indicated that hsa-miR-4270 stimulates the stemness property of GCSCs, likely through stimulating the development of gastric stem cells.
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Affiliation(s)
- Hassan Akrami
- Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Akrami H, Shamsdin SA, Nikmanesh Y, Fattahi M. Effect of Mir-4270 Inhibitor and Mimic on Viability and Stemness in Gastric Cancer Stem-Like Cells Derived from MKN-45 Cell Line. Iran Biomed J 2023; 27:100-7. [PMID: 37070617 DOI: 10.52547/ibj.3851] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Background MicroRNAs (miRNAs) are significant regulatory factors in stem cell proliferation, and change in miRNA expression influences the cancer stem cell viability and gene expression. Herein, we evaluated the effect of the hsa-miR-4270 inhibitor and its mimic on the expression of stem cell markers in gastric cancer (GC) stem-like cells. Methods GC stem-like cells were isolated from the MKN-45 cell line by a non-adherent surface system. The cells were confirmed by differentiation assays using dexamethasone and insulin as adipogenesis-inducing agents and also Staurosporine as a neural-inducing agent. Isolated GC stem-like cells were treated with different concentrations (0, 15, 20, 25, 30, 40, 50, and 60 nM) of hsa-miR-4270 inhibitor and its mimic. The quantity of cell viability was determined by trypan blue method. Transcription of the stem cell marker genes, including CD44, OCT3/4, SOX2, Nanog, and KLF4, was evaluated by real-time RT-PCR. Results The results showed that GC stem-like cells were differentiated into both adipose cells using dexamethasone and insulin and neural cells by Staurosporine. Treatment of GC stem-like cells with hsa-miR-4270 inhibitor decreased cell viability and downregulated OCT3/4, CD44, and Nanog to 86%, 79%, and 91% respectively. Also, SOX2 and KLF4 were overexpressed to 8.1- and 1.94-folds, respectively. However, hsa-miR-4270 mimic had opposite effects on the cell viability and gene expression of the stem cell markers. Conclusion The effect of hsa-miR-4270 inhibitor and its mimic on the expression of the stem cell markers in GCSCs indicated that hsa-miR-4270 stimulates the stemness property of GCSCs, likely through stimulating the development of gastric stem cells.
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Affiliation(s)
- Hassan Akrami
- Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Seyedeh Azra Shamsdin
- Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Yousef Nikmanesh
- Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammadreza Fattahi
- Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Bahraminia F, Zangiabadian M, Nasiri MJ, Fattahi M, Goudarzi M, Ranjbar R, Imani Fooladi AA. Rifampicin resistance in Mycobacterium tuberculosis in Iran: a two-centre study. New Microbes New Infect 2021; 42:100909. [PMID: 34336229 PMCID: PMC8313744 DOI: 10.1016/j.nmni.2021.100909] [Citation(s) in RCA: 3] [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: 10/14/2020] [Revised: 05/30/2021] [Accepted: 06/14/2021] [Indexed: 11/16/2022] Open
Abstract
Multidrug-resistant tuberculosis remains a challenge. In this study, we investigated the incidence of rifampicin (RIF) resistance in Mycobacterium tuberculosis in a large number of pulmonary specimens. A two-center study in Tehran, the capital of Iran, was performed with 6624 pulmonary samples of patients with tuberculosis (TB) who were subjected to detection of RIF-resistant TB by GeneXpert MTB/RIF assay between May 2014 and July 2018. Conventional drug susceptibility testing was performed to confirm the results. Xpert MTB/RIF identified a total of 96 positives for M. tuberculosis, of which 5 (5.3%) samples were found to be RIF-resistant TB. All RIF-resistant and sensitive isolates detected by GeneXpert were phenotypically confirmed by drug susceptibility testing. These results indicated that the Xpert MTB/RIF test can be used as a rapid diagnostic method and can potentially decrease the morbidity associated with diagnostic delay and mistreatment.
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Affiliation(s)
- F Bahraminia
- Applied Microbiology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - M Zangiabadian
- Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - M J Nasiri
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - M Fattahi
- Regional Tuberculosis Reference Laboratory, Tehran University of Medical Sciences, Tehran, Iran
| | - M Goudarzi
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - R Ranjbar
- Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - A A Imani Fooladi
- Applied Microbiology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
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Afzalimoghaddam M, Fattahi M, Pourghorban R, Eftekhari M, Abdollahi A. The accuracy of various types of urinalysis in terms of predicting intra-abdominal injury in emergency trauma patients: A diagnostic accuracy study. Arch Trauma Res 2021. [DOI: 10.4103/atr.atr_28_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Taghinejad A, Barani S, Gholijani N, Ghandehari F, Khansalar S, Asadipour M, Davarpanah M, Fattahi M, Kalantar K. Variations in IL-22, IL-27 and IL-35 serum levels in untreated and treated hepatitis C patients. Eur Cytokine Netw 2020; 31:134-139. [PMID: 33648921 DOI: 10.1684/ecn.2020.0455] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Hepatitis C virus (HCV) is the leading cause of chronic liver diseases including hepatic fibrosis, cirrhosis, and hepatocellular carcinoma. We aimed to assess serum levels of interleukin (IL)-22, IL-27 and IL-35 in patients with hepatitis C and healthy controls to investigate their possible relationship with viral genotypes and liver enzyme levels. METHOD A total of 30 newly diagnosed hepatitis C patients with no history of antiviral therapy and 30 healthy individuals participated in this study. Serum levels of IL-22, IL-27 and IL-35 were determined by ELISA in peripheral blood samples from patients prior to and following treament with pan-genotypic direct-acting anti-viral therapy. Serum levels of alanine transaminase (ALT), aspartate transaminase (AST), and alkaline phosphatase (ALP) were measured to determine any possible association between hepatic enzymes and cytokine serum levels concentrations. RESULT The results show elevated serum levels of of IL-35 in HCV-infected patients compared to treated cases and healthy controls, whereas there was no significant difference in IL-22 and IL-27 serum levels among the three groups. Additionally, the cytokine levels were not significantly correlated with certain genotypes and levels of liver enzymes. CONCLUSION Our findings indicate a potential role for IL-35 in chronic HCV infection and therapeutic management of patients with hepatitis C infection.
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Affiliation(s)
- Azam Taghinejad
- Gastroenterology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Shaghik Barani
- Department of Immunology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Naser Gholijani
- Autoimmune Diseases Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Farzad Ghandehari
- Gastroenterology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Soolmaz Khansalar
- Department of Immunology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Morvarid Asadipour
- Department of Immunology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammadali Davarpanah
- Shiraz HIV/AIDS Research Center, Institute of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammadreza Fattahi
- Gastroenterology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Kurosh Kalantar
- Department of Immunology, Shiraz University of Medical Sciences, Shiraz, Iran
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Tavakoli A, Shirzad M, Taghavi A, Fattahi M, Ahmadian-Attari M, Mohammad Taghizadeh L, Rostami Chaijan M, Sedigh Rahimabadi M, Akrami R, Pasalar M. Efficacy of Rose Oil Soft Capsules on Clinical Outcomes in Ulcerative Colitis: A Pilot Randomized, Double-Blinded, Placebo-Controlled Clinical Trial. Galen Med J 2019; 8:e1307. [PMID: 34466491 PMCID: PMC8344031 DOI: 10.31661/gmj.v8i0.1307] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Revised: 09/01/2018] [Accepted: 02/05/2019] [Indexed: 12/16/2022] Open
Abstract
Background Ulcerative colitis is the most common form of inflammatory bowel disease worldwide, which presents with superficial ulcers in the rectum and colon. The aim of this study was to assess the effectiveness of rose oil soft capsules over placebo on the clinical outcomes in moderate to severe ulcerative colitis. Materials and Methods This study was a pilot randomized, double-blind clinical trial, and the 40 patients were assigned into rose oil and placebo groups (n=20 per group). All patients were instructed to use their prescribed two soft capsules three times daily for two months. The clinical symptoms, quality of life the patients, and calprotectin level were evaluated via partial Mayo clinic score, irritable bowel disease questionnaire (IBDQ-9), and calprotectin kit as primary outcome measures. Results The mean age of the participants was 41±10 years. Most of them (53.6%) were male, and the remaining (46.4%) were female. The demographic and baseline data showed no differences between the two groups. Partial Mayo clinic scores decreased in both groups after the treatment, but the difference between the rose oil and placebo groups was not statistically significant (P=0.99). IBDQ-9 score also increased in both interventions before and after the treatment (P=0.012), though the differences between these two groups were not statistically significant (P=0.61). There were no significant differences between the two study groups either in terms of calprotectin level (P=0.219). Conclusion This study showed that rose oil might improve ulcerative colitis clinical outcomes, but for a better evaluation, it is imperative to conduct experiments with a large sample size and longer follow-up observation.
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Affiliation(s)
- Ali Tavakoli
- Research Center for Traditional Medicine and History of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Traditional Medicine, Faculty of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Meysam Shirzad
- Department of Persian Medicine, School of Persian Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Taghavi
- Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammadreza Fattahi
- Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammadmahdi Ahmadian-Attari
- Evidence-based Phytotherapy and Complementary Medicine Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | | | - Mahsa Rostami Chaijan
- Research Center for Traditional Medicine and History of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Traditional Medicine, Faculty of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Masih Sedigh Rahimabadi
- Department of Persian Medicine, Fasa University of Medical Sciences, Fasa, Iran
- Essence of Parsiyan Wisdom Institute, Traditional Medicine and Medicinal Plant Incubator, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Rahimeh Akrami
- Research Center for Traditional Medicine and History of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Traditional Medicine, Faculty of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mehdi Pasalar
- Research Center for Traditional Medicine and History of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
- Essence of Parsiyan Wisdom Institute, Traditional Medicine and Medicinal Plant Incubator, Shiraz University of Medical Sciences, Shiraz, Iran
- Correspondence to: Mehdi Pasalar, Research Center for Traditional Medicine and History of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran Telephone Number: 07132338476 Email Address:
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Alaee A, Azizi A, valaei N, Taheri S, Ravanshadi F, Hajipour M, Fattahi M. In-Vitro Effect of Natural Honey on the Growth of Streptococcus sanguinis. J Res Dentomaxillofac Sci 2019. [DOI: 10.29252/jrdms.4.1.1] [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: 10/31/2022] Open
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13
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Bordbar M, Shakibazad N, Fattahi M, Haghpanah S, Honar N. Effect of ursodeoxycholic acid and vitamin E in the prevention of liver injury from methotrexate in pediatric leukemia. Turk J Gastroenterol 2018; 29:203-209. [PMID: 29749328 DOI: 10.5152/tjg.2018.17521] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND/AIMS Ursodeoxycholic acid (UDCA) and antioxidants such as vitamin E are considered to have a protective role in preventing chemotherapy-induced liver damage. The aim of this study was to assess the efficacy of these agents for hepatoprotection in pediatric patients with B-cell acute lymphoblastic leukemia (ALL), who were treated with methotrexate in their maintenance phase of treatment. MATERIALS AND METHODS Eighty children with B-cell ALL were randomly divided into four groups. Group 1 was administered oral vitamin E (400 mg/day); group 2 was administered oral UDCA (15 mg/kg/day); group 3 was administered a combination of the two drugs; and group 4 served as a control group and was administered no drug except their chemotherapy drugs. Complete blood count, liver function test, liver ultrasonography, and liver fibroscan were requested, and the results were compared. RESULTS Group 1 showed a slight increase in total bilirubin levels compared to baseline levels during the study (P=0.036). Group 2 showed a decline in aspartate aminotransferase and alanine aminotransferase levels during the study and at 6 months after discontinuing the drug; however, these differences were not statistically significant (P=0.051 and 0.083, respectively). None of the patients showed the evidence of significant fibrosis on liver fibroscan. Eight patients showed some evidence of mild-to-moderate fibrosis (F1, F2), but the results were not different between the groups as well as between pre- and post-study periods in each group. CONCLUSION Low-dose methotrexate does not cause significant liver fibrosis in pediatric leukemia. UDCA and vitamin E have minimal roles in hepatoprotection among pediatric patients with ALL.
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Affiliation(s)
| | - Nader Shakibazad
- Hematology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammadreza Fattahi
- Gastroenterology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sezaneh Haghpanah
- Hematology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Naser Honar
- Department of Gastroenterology, Shiraz University of Medical Sciences, Shiraz, Iran
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Hosseini SH, Fattahi M, Ahmadi G. Investigation of hydrodynamics and heat transfer in pseudo 2D spouted beds with and without draft plates. Braz J Chem Eng 2017. [DOI: 10.1590/0104-6632.20170344s20150588] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Fattahi M, Eglem A, Houée-Levin C, Ferradini C, Jacquier P. Radiolyse des systèmes eau-argile. Application au stockage des déchets radioactifs. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1993900767] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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16
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Fattahi M, Davoodnia A, Pordel M. Efficient one-pot synthesis of some new pyrimido[5′,4′:5,6]pyrido[2,3-d]pyrimidines catalyzed by magnetically recyclable Fe3O4 nanoparticles. RUSS J GEN CHEM+ 2017. [DOI: 10.1134/s1070363217040326] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Vahedi M, Saeedi A, Poorbaghi SL, Sepehrimanesh M, Fattahi M. Metabolic and endocrine effects of bisphenol A exposure in market seller women with polycystic ovary syndrome. Environ Sci Pollut Res Int 2016; 23:23546-23550. [PMID: 27614642 DOI: 10.1007/s11356-016-7573-5] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [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: 04/27/2016] [Accepted: 09/01/2016] [Indexed: 04/15/2023]
Abstract
Bisphenol A (BPA) is one of the synthetic monomer which can be found in the environment. Limited animal and human studies have demonstrated that BPA alters endocrine and or metabolic functions. The aims of the present study were to evaluate serum BPA level in marketing seller women with polycystic ovary syndrome (PCOS) and hormonal and metabolic effects of this exposure compared to a control paired group. In a case-control study, 62 PCOS women who work as marketing sellers and 62 healthy women with similar jobs were included. The two groups were body mass index (BMI)- and age-matched. Serum samples were analyzed for BPA content, fasting blood sugar (FBS), triglyceride, cholesterol, HDL and LDL levels, thyroid stimulating hormone (TSH) concentration, and LH:FSH ratio. Significant higher serum BPA content (0.48 ± 0.08 vs. 0.16 ± 0.04 ng/ml), triglyceride (103.05 ± 13.10 vs. 91.65 ± 12.52 mg/dl), cholesterol (165.05 ± 10.79 vs. 161.21 ± 10.31 mg/dl) levels and LH:FSH ratio (3.64 ± 0.86 vs. 0.62 ± 0.14) and significant lower TSH concentration (1.56 ± 0.68 vs. 2.15 ± 1.09 IU/ml) were detected in case against control group, respectively (P < 0.05). No significant differences were detected in FBS, LDL, and HDL levels between the two groups. Also, there were no significant associations between serum TSH concentration and BPA level neither in case (P = 0.269) nor in control (P = 0.532) groups. In BPA-exposed PCOS women, BPA level was higher than healthy women and this difference maybe the cause of significant differences in levels of triglyceride, cholesterol, TSH, and LH:FSH ratio. These observations confirm the potential role of BPA in PCOS pathophysiology.
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Affiliation(s)
- Mahjoob Vahedi
- Center of Experimental and Comparative Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Arastoo Saeedi
- Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Masood Sepehrimanesh
- Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, PO Box: 71935-1311, Shiraz, Iran.
| | - Mohammadreza Fattahi
- Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, PO Box: 71935-1311, Shiraz, Iran
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18
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Fattahi M, Latif A. A novel scheme for selection of watermark strength in digital image watermarking based on harmony search algorithm. IFS 2015. [DOI: 10.3233/ifs-151585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Garaix G, Venault L, Costagliola A, Maurin J, Guigue M, Omnee R, Blain G, Vandenborre J, Fattahi M, Vigier N, Moisy P. Alpha radiolysis of nitric acid and sodium nitrate with 4He2+ beam of 13.5MeV energy. Radiat Phys Chem Oxf Engl 1993 2015. [DOI: 10.1016/j.radphyschem.2014.08.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [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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20
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Fattahi M, Malekpour A, Mortazavi M, Safarpour A, Naseri N. The characteristics of rare codon clusters in the genome and proteins of hepatitis C virus; a bioinformatics look. Middle East J Dig Dis 2014; 6:214-27. [PMID: 25349685 PMCID: PMC4208930] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Accepted: 09/12/2014] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Recent studies suggest that rare codon clusters are functionally important for protein activity. METHODS Here, for the first time we analyzed and reported rare codon clusters in Hepatitis C Virus (HCV) genome and then identified the location of these rare codon clusters in the structure of HCV protein. This analysis was performed using the Sherlocc program that detects statistically relevant conserved rare codon clusters. RESULTS By this program, we identified the rare codon cluster in three regions of HCV genome; NS2, NS3, and NS5A coding sequence of HCV genome. For further understanding of the role of these rare codon clusters, we studied the location of these rare codon clusters and critical residues in the structure of NS2, NS3 and NS5A proteins. We identified some critical residues near or within rare codon clusters. It should be mentioned that characteristics of these critical residues such as location and situation of side chains are important in assurance of the HCV life cycle. CONCLUSION The characteristics of these residues and their relative status showed that these rare codon clusters play an important role in proper folding of these proteins. Thus, it is likely that these rare codon clusters may have an important role in the function of HCV proteins. This information is helpful in development of new avenues for vaccine and treatment protocols.
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Affiliation(s)
- Mohammadreza Fattahi
- 1 Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
,Corresponding Author: Mohammadreza Fattahi, MD Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, P.O. Box: 71935-1311, Shiraz, Iran Telefax: + 98 71 36474263
| | - Abdorrasoul Malekpour
- 1 Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mojtaba Mortazavi
- 2 Department of Biotechnology, Institute of Science and High Technology and Environmental Science, Graduate University of Advanced Technology, Kerman, Iran
| | - Alireza Safarpour
- 1 Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Nasrin Naseri
- 1 Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Denden I, Poineau F, Schlegel ML, Roques J, Solari PL, Blain G, Czerwinski KR, Essehli R, Barbet J, Fattahi M. Behavior of Heptavalent Technetium in Sulfuric Acid under α-Irradiation: Structural Determination of Technetium Sulfate Complexes by X-ray Absorption Spectroscopy and First Principles Calculations. J Phys Chem A 2014; 118:1568-75. [DOI: 10.1021/jp404967f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- I. Denden
- UMR 6457, SUBATECH Laboratory, 4 rue Alfred Kastler, La Chantrerie BP 20722, 44307 Nantes cedex 3, France
| | - F. Poineau
- Department
of Chemistry, University of Nevada Las Vegas, Las Vegas, Nevada 89154, United States
| | | | - J. Roques
- IPN Orsay
UMR 8608, Université Paris Sud, Bâtiment 100, 91406 Orsay Cedex, France
| | - P. Lorenzo Solari
- L’Orme des Merisiers, Synchrotron SOLEIL, Saint-Aubin - BP 48, F-91192 Gif-sur-Yvette Cedex, France
| | - G. Blain
- UMR 6457, SUBATECH Laboratory, 4 rue Alfred Kastler, La Chantrerie BP 20722, 44307 Nantes cedex 3, France
| | - K. R. Czerwinski
- Department
of Chemistry, University of Nevada Las Vegas, Las Vegas, Nevada 89154, United States
| | - R. Essehli
- ESECO SYSTEMS, 270 rue Thomas Edison, Atelier Relais n 6, 34400 Lunel, France
| | - J. Barbet
- Cyclotron ARRONAX, 1,
rue Aronnax CS 10112, 44817 Saint-Herblain, France
| | - M. Fattahi
- UMR 6457, SUBATECH Laboratory, 4 rue Alfred Kastler, La Chantrerie BP 20722, 44307 Nantes cedex 3, France
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Fattahi M, Kazemeini M, Khorasheh F, Darvishi A, Rashidi AM. Fixed-Bed Multi-Tubular Reactors for Oxidative Dehydrogenation in Ethylene Process. Chem Eng Technol 2013. [DOI: 10.1002/ceat.201300148] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Fattahi M, Dalir-Naghadeh B, Maham M. Prophylactic and therapeutic effects of garlic extract onNerium oleander-induced arrhythmia: a new approach to antiarrhythmic therapy in an ovine model. Clin Toxicol (Phila) 2013; 51:737-47. [DOI: 10.3109/15563650.2013.829234] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Fattahi M, Nabhani N, Rashidkhani E, Fattahi Y, Akhavan S, Arabian N. A new technique for the strengthening of aluminum tungsten inert gas weld metals: using carbon nanotube/aluminum composite as a filler metal. Micron 2013; 54-55:28-35. [PMID: 23948441 DOI: 10.1016/j.micron.2013.07.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [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: 03/28/2013] [Revised: 07/15/2013] [Accepted: 07/15/2013] [Indexed: 10/26/2022]
Abstract
The effect of multi-walled carbon nanotube (MWCNT) on the mechanical properties of aluminum multipass weld metal prepared by the tungsten inert gas (TIG) welding process was investigated. High energy ball milling was used to disperse MWCNT in the aluminum powder. Carbon nanotube/aluminum composite filler metal was fabricated for the first time by hot extrusion of ball-milled powders. After welding, the tensile strength, microhardness and MWCNT distribution in the weld metal were investigated. The test results showed that the tensile strength and microhardness of weld metal was greatly increased when using the filler metal containing 1.5 wt.% MWCNT. Therefore, according to the results presented in this paper, it can be concluded that the filler metal containing MWCNT can serve as a super filler metal to improve the mechanical properties of TIG welds of Al and its alloys.
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Affiliation(s)
- M Fattahi
- Technical Inspection Engineering Department, Petroleum University of Technology, Abadan, Iran; Health, Safety & Environment Department, Bandar Imam Petrochemical Complex, Mahshahr, Iran.
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Fattahi M, Nabhani N, Hosseini M, Arabian N, Rahimi E. Effect of Ti-containing inclusions on the nucleation of acicular ferrite and mechanical properties of multipass weld metals. Micron 2013; 45:107-14. [DOI: 10.1016/j.micron.2012.11.004] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Revised: 11/11/2012] [Accepted: 11/11/2012] [Indexed: 10/27/2022]
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Mennecart T, Grambow B, Fattahi M, Blondiaux G, Andriambololona Z. Effect of Alpha Radiolysis on UO2Dissolution under Reducing Conditions. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-807-403] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTEffects of water radiolysis on the dissolution rate of UO2were studied by irradiating UO2colloids with an alpha particle beam of a cyclotron. The solution was kept under reducing conditions by applying a current of -10 or -50 nA and an ultrahigh purity argon bubbling. The solution pH was fixed at 6 during experiment. The particle flux was 1.1×1011α.cm−2.s−1entering in solution with an energy of 5 – 6 MeV. Despite initial reducing conditions water radiolysis increased the dissolution rate of uranium dioxide due to reaction with oxidizing radiolytic species such as H2O2, O2, OH•, HO2•, ClO3−. The monitoring of the redox potential showed that the solutions became rapidly oxidizing. The dissolution rate values were between 0.01 and 26 mg·m−2·d−1depending on the ratio of the irradiated UO2mass to the solution volume. This dependency is caused by hydrogen peroxide consumption at the UO2surface. The rate of hydrogen peroxide consumption by reaction with colloids corresponds to an equivalent rate of UO2oxidation/dissolution between 2 and 60 mg.m−2.d−1indicating that only a small fraction of produced H2O2is consumed by the dissolution reaction.
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Atinault E, De Waele V, Belloni J, Le Naour C, Fattahi M, Mostafavi M. Radiolytic Yield of UIV Oxidation into UVI: A New Mechanism for UV Reactivity in Acidic Solution. J Phys Chem A 2010; 114:2080-5. [DOI: 10.1021/jp9051177] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- E. Atinault
- Laboratoire de Chimie Physique/ELYSE, CNRS-Université Paris-Sud, Bât. 349, 91405 Orsay, France, SUBATECH, Ecole des Mines de Nantes, Université de Nantes, 44307 Nantes, France, and Institut de Physique Nucléaire, CNRS-Université Paris-Sud, Bât. 100, 91406 Orsay, France
| | - V. De Waele
- Laboratoire de Chimie Physique/ELYSE, CNRS-Université Paris-Sud, Bât. 349, 91405 Orsay, France, SUBATECH, Ecole des Mines de Nantes, Université de Nantes, 44307 Nantes, France, and Institut de Physique Nucléaire, CNRS-Université Paris-Sud, Bât. 100, 91406 Orsay, France
| | - J. Belloni
- Laboratoire de Chimie Physique/ELYSE, CNRS-Université Paris-Sud, Bât. 349, 91405 Orsay, France, SUBATECH, Ecole des Mines de Nantes, Université de Nantes, 44307 Nantes, France, and Institut de Physique Nucléaire, CNRS-Université Paris-Sud, Bât. 100, 91406 Orsay, France
| | - C. Le Naour
- Laboratoire de Chimie Physique/ELYSE, CNRS-Université Paris-Sud, Bât. 349, 91405 Orsay, France, SUBATECH, Ecole des Mines de Nantes, Université de Nantes, 44307 Nantes, France, and Institut de Physique Nucléaire, CNRS-Université Paris-Sud, Bât. 100, 91406 Orsay, France
| | - M. Fattahi
- Laboratoire de Chimie Physique/ELYSE, CNRS-Université Paris-Sud, Bât. 349, 91405 Orsay, France, SUBATECH, Ecole des Mines de Nantes, Université de Nantes, 44307 Nantes, France, and Institut de Physique Nucléaire, CNRS-Université Paris-Sud, Bât. 100, 91406 Orsay, France
| | - M. Mostafavi
- Laboratoire de Chimie Physique/ELYSE, CNRS-Université Paris-Sud, Bât. 349, 91405 Orsay, France, SUBATECH, Ecole des Mines de Nantes, Université de Nantes, 44307 Nantes, France, and Institut de Physique Nucléaire, CNRS-Université Paris-Sud, Bât. 100, 91406 Orsay, France
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Abstract
Summary
The aim of the present work is to quantify the influence of alpha radioactivity of 225Ac doped UO2 on the dissolution rate under reducing conditions at pH 6. The doped or undoped material was prepared by precipitation and the size of particles was about 3 nm. The total alpha activity of the doped material was about 2000 MBq g-1 UO2, about 4 times higher than that of 15 years old spent fuel. The solution was kept under reducing conditions during the experiment by permanent electrochemical reduction under inert atmosphere. The results showed that the dissolution rate of doped material was a function of alpha activity and thus a function of the dose.
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Abstract
AbstractSpeciation of Tc in aqueous solution is a complex phenomenon because several parameters intervene simultaneously. We show under gamma radiations, it is completely modified. At pH 8.5 TcO2is oxidized to Tc(VII) with a yield of 1.38×10−7mol J−1. At pH 1.5, it was demonstrated that Tc is present as hydroxylated species TcnOy(4n-2y)+(L. Vichot, M. Fattahi, M. Musikas: Radiochim. Acta 91, 263 (2003)). Its oxidation leads also to Tc(VII) with an experimental yield of 1.45×10−7mol J−1. In more acidic solutions, results are consistent with hydrolysis and oxidation of Tc(IV) to Tc(V). As for colloidal solutions of Tc(IV) or TcO2, they give Tc(VII) whereas solutions of TcCl62-at pH 0.5 and 1.5 do not lead directly to Tc(VII). Reduced states of Tc are very sensitive to radiation. Hydrolysis as well as polymerisation of Tc are accelerated. Furthermore the radiolytic processes are pH dependent.
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Abstract
SummaryExperiments were performed, irradiating UO2colloids of 3 nm diameter by a 5 MeV alpha beam of a cyclotron. Both the dissolution rate of these colloids and the production rate of hydrogen peroxide have been measured. The experimentally measured corrosion rate of these colloids is very similar to the corrosion rates measured for bulk UO2samples, indicating on the one hand that similar reaction mechanism prevail and on the other hand that the UO2colloids are well representative for bulk UO2. The results were compared with two current models for radiolytical dissolution of spent fuel. Additionally a new coupling between water radiolysis reactions and spent fuel dissolution has been established. The coupling is not anymore based on rate constants for direct reaction of oxidants with UO2, but on the electrochemical coupling of anodic dissolution reactions with cathodic reduction of molecular and radical radiolysis products. The model not only describes well the experimental data, it also allows to predict both the establishment of corrosion potentials and of fractional reaction orders with respect to oxidant concentrations. Model results can also be compared with experimental data (corrosion potential ...) using UO2as an electrode.
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Kermanpour F, Fattahi M. Prediction of the structure factor behavior of mono atomic fluids using the HNC approximation and the ISM equation of state. J Mol Liq 2009. [DOI: 10.1016/j.molliq.2009.04.003] [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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Atinault E, De Waele V, Fattahi M, LaVerne JA, Pimblott SM, Mostafavi M. Aqueous solution of UCl6(2-) in O2 saturated acidic medium: an efficient system to scavenge all primary radicals in spurs produced by irradiation. J Phys Chem A 2009; 113:949-51. [PMID: 19159206 DOI: 10.1021/jp810579x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Absorbance measurements find the yield of the oxidation of U(IV) to be (8.75 +/- 0.05) x 10(-7) mol J(-1) in the (60)Co gamma radiolysis of aqueous solutions containing 4.4 x 10(-3) mol L(-1) U(IV) in the presence of O(2) saturated 2 mol L(-1) Cl(-) at pH = 0. This high value of oxidation yield suggests that all primary radicals formed by water decomposition are scavenged in these solutions. Simulations using a nonhomogeneous stochastic kinetic track model agree with the experimental results and are used to explain the mechanism for scavenging radicals and oxidation of U(IV).
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Tafazzoli M, Ziyaei-Halimjani A, Ghiasi M, Fattahi M, Saidi M. Dynamic NMR studies of N-benzoyl pyrrolidine and N-benzoyl piperidine derivatives. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.01.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Atinault E, De Waele V, Schmidhammer U, Fattahi M, Mostafavi M. Scavenging of es− and OH radicals in concentrated HCl and NaCl aqueous solutions. Chem Phys Lett 2008. [DOI: 10.1016/j.cplett.2008.06.048] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Habibi Khorassani SM, Maghsoodlou MT, Ebrahimi A, Zakarianejad M, Fattahi M. Kinetics and Mechanism of the Reactions Between Triphenylphosphine, Dialkyl Acetylenedicarboxilates and a NH-Acid, Pyrazole, by UV Spectrophotometry. J SOLUTION CHEM 2007. [DOI: 10.1007/s10953-007-9173-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Simforoosh N, Aminsharifi A, Tabibi A, Fattahi M, Mahmoodi H, Tavakoli M. Right laparoscopic donor nephrectomy and the use of inverted kidney transplantation: an alternative technique. BJU Int 2007; 100:1347-50. [PMID: 17850376 DOI: 10.1111/j.1464-410x.2007.07134.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To report a novel approach to overcome the problems associated with a short right renal vein harvested by clipping the vein during right laparoscopic donor nephrectomy (RLDN). PATIENTS AND METHODS This prospective study included 32 donors and their recipients; all donors had transperitoneal RLDN. The right renal artery and vein were ligated by Hem-o-lok and titanium clips, which resulted in a very short renal vein (<1.5 cm). When the kidney was positioned inverted in the recipient, the renal vein was placed posteriorly, adjacent to the external iliac vein, making a safe and simple venous anastomosis possible. RESULTS All RLDN were completed with no conversion or re-operation. The mean (range) warm ischaemia time was 9.59 (3-17) min and there was no malfunction of the vascular clips on the major vessels. After a mean follow-up of 14 months the recipient survival rate was 97%. Graft function was excellent, with a mean (sd) serum creatinine level of 1.35 (0.31) mg/dL at 3 months after surgery, and there was no renal artery or vein thrombosis in any of the grafts. There were two ureteric complications (6%), i.e. one ureterocutaneous fistula resolved by secondary ureteroureterostomy, and one stricture at the site of ureteric anastomosis, which was managed by ureteroneocystostomy. CONCLUSION The right renal vein obtained by LDN, after clipping the renal vein, is quite short, but by placing the kidney upside-down in the right iliac fossa transplantation is possible with no increased incidence of vascular thrombosis. This simple modification might obviate the need for removing a patch from the inferior vena cava, which is a challenging procedure for laparoscopic surgeons during RLDN.
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Affiliation(s)
- Nasser Simforoosh
- Urology Nephrology Research Center, Shaheed Labbafinejad Hospital, Shaheed Beheshti University of Medical Sciences, Tehran, Iran.
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Nobakht M, Majidzadeh S, Fattahi M, Samadi M, Tabatabaeei P. Expression of neuronal nitric oxide synthase during embryonic development of the rat optic vesicle. Pak J Biol Sci 2007; 10:1078-82. [PMID: 19070054 DOI: 10.3923/pjbs.2007.1078.1082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The expression of neuronal nitric oxide synthase during the development of rat optic vesicle from embryonic day E14 to E18 was analyzed by histochemical procedures. The samples were frozen and cut on a cryostat and then studied by using the light microscope. Expression of nNOS was first seen on E14 in cells of Cajal-Retzius located in the marginal zone of optic vesicle. NADPH-d persisted in this layer throughout the embryonic period and began to decrease on E20. At E16, the optic vesicle has four NADPH-d positive layers. At E18, NADPH-d reactivity observed at low magnification showed five clearly defined layers. In the late stages, the most notable feature was a decrease in histochemical reaction of the marginal zone and at these stages, the layer IV showed less staining than the rest of the cortical plate. The observations suggest that nitric oxide is synthesized during embryonic life processes and this is related to maturational processes.
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Affiliation(s)
- M Nobakht
- Department of Anatomy and Histology, Iran University, P.O. Box 14155-6183, Tehran, Iran
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Abdelouas A, Grambow B, Fattahi M, Andrès Y, Leclerc-Cessac E. Microbial reduction of 99Tc in organic matter-rich soils. Sci Total Environ 2005; 336:255-268. [PMID: 15589263 DOI: 10.1016/j.scitotenv.2004.06.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2004] [Revised: 05/28/2004] [Accepted: 06/07/2004] [Indexed: 05/24/2023]
Abstract
For safety assessment purposes, it is necessary to study the mobility of long-lived radionuclides in the geosphere and the biosphere. Within this framework, we studied the behaviour of (99)Tc in biologically active organic matter-rich soils. To simulate the redox conditions in soils, we stimulated the growth of aerobic and facultative denitrifying and anaerobic sulphate-reducing bacteria (SRB). In the presence of either a pure culture of denitrifiers (Pseudomonas aeruginosa) or a consortium of soil denitrifiers, the solubility of TcO(4)(-) was not affected. The nonsorption of TcO(4)(-) onto bacteria was confirmed in biosorption experiments with washed cells of P. aeruginosa regardless of the pH. At the end of denitrification with indigenous denitrifiers in soil/water batch experiments, the redox potential (E(H)) dropped and this was accompanied by an increase of Fe concentration in solution as a result of reduction of less soluble Fe(III) to Fe(II) from the soil particles. It is suggested that this is due to the growth of a consortium of anaerobic bacteria (e.g., Fe-reducing bacteria). The drop in E(H) was accompanied by a strong decrease in Tc concentration as a result of Tc(VII) reduction to Tc(IV). Thermodynamic calculations suggested the precipitation of TcO(2). The stimulation of the growth of indigenous sulphate-reducing bacteria in soil/water systems led to even lower E(H) with final Tc concentration of 10(-8) M. Experiments with glass columns filled with soil reproduced the results obtained with batch cultures. Sequential chemical extraction of precipitated Tc in soils showed that this radionuclide is strongly immobilised within soil particles under anaerobic conditions. More than 90% of Tc is released together with organic matter (60-66%) and Fe-oxyhydroxides (23-31%). The present work shows that ubiquitous indigenous anaerobic bacteria in soils play a major role in Tc immobilisation. In addition, organic matter plays a key role in the stability of the reduced Tc.
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Affiliation(s)
- A Abdelouas
- Ecole des Mines de Nantes, SUBATECH (UMR 6457), 4, rue Alfred Kastler-La chantrerie, BP 20722, 44307 Nantes Cedex 3, France.
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Shafiei M, Nobakht M, Fattahi M, Kohneh-Shahri L, Mahmoudian M. Histochemical assessment of nitric oxide synthase activity in aortic endothelial cells of streptozotocin-induced diabetic rats. Pathophysiology 2003; 10:63-67. [PMID: 14643905 DOI: 10.1016/j.pathophys.2003.08.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Impaired endothelium-dependent relaxation of blood vessels is a common feature in diabetes, but the exact underlying mechanisms have not yet been clarified. In present study, endothelium-dependent vasorelaxation of aortic rings were evaluated in vitro in streptozotocin (STZ)-induced diabetic and age-matched control rats. Moreover, nitric oxide synthase (NOS) activity of aortic endothelial cells was assessed in both diabetic and healthy rats using histochemical staining for nicotinamide adenine dinucleotide phosphate (NADPH)-diaphorase activity. The results showed a significant decrease of endothelium-dependent relaxation in response to acetylcholine (ACh) in diabetic rings, compared with controls, that was accompanied by a remarkable attenuation of NOS activity in diabetic sections of rat aorta stained for NADPH-diaphorase. Furthermore, a membrane disruption of some endothelial cells was also observed in all diabetic sections. It can be concluded that a decrease in NOS activity together with a disruption of endothelial cell membrane play a major role in endothelial dysfunction observed in diabetes.
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Affiliation(s)
- M Shafiei
- Razi Institute for Drug Research, Iran University of Medical Sciences, P.O. Box 14155-6183, Tehran, Iran
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Malek-hosseini SA, Lahsaee M, Salahi H, Bahador A, Haghighat M, Kaviani MJ, Khosravi MB, Borzoie M, Bagheri MH, Fattahi M, Davari HR, Karbassi A. Living related liver transplantation in children: the Iranian experience. Transplant Proc 2003; 35:377-8. [PMID: 12591448 DOI: 10.1016/s0041-1345(02)03845-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- S A Malek-hosseini
- Organ Transplantation Research Center, Nemazee Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
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Abstract
Gamma radiation effects on the stability of the oxidation state of radioelements and diffusion within the framework of nuclear waste repositories are often neglected, although it may influence physicochemical processes and thus transfer to biosphere and geosphere. This knowledge is essential to model transport phenomena. This study reports on effects of gamma irradiation on technetium in carbonate media, which is representative of natural systems. Depending on media compositions, the gamma irradiation on pertechnetate leads to formation of Tc(IV) only in the absence of carbonate. CO3*- radicals are able to re-oxidise technetium intermediate oxidation states to the +7 state.
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Affiliation(s)
- K B Said
- Laboratoire Subatech, UMR 6457 Université de Nantes/Ecole des Mines de Nantes/CNRS (IN2P3), Ecole des Mines de Nantes, France.
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Nobakht M, Fattahi M, Hoormand M, Milanian I, Rahbar N, Mahmoudian M. A study on the teratogenic and cytotoxic effects of safflower extract. J Ethnopharmacol 2000; 73:453-459. [PMID: 11090999 DOI: 10.1016/s0378-8741(00)00324-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
In recent years, the use of carthami flos (the flowers of Carthamus tinctorius L.) as a coloring and flavoring agent has increased as a food additive in Iran. In order to evaluate its safety, the teratogenic effects of carthami flos on the central nervous system development in mice was investigated. Furthermore, its cytotoxic effect on the rat nervous cell culture was studied to complete safety evaluations. For teratogenic studies, after natural mating, pregnant mice were divided into test and control groups. The groups were treated with different dosage regimens of aqueous carthami flos extract during 0-8 days of gestation. Embryos were then isolated at the 13th gestation day and evaluated for macroscopic, microscopic and morphometric characteristics. The results showed that in higher doses (1.6 and 2 mg/kg/day) the embryos were absorbed, whereas with lower dose (1.2 mg/kg/day) changes in external, internal and longitudinal diameters, open neuropore, changes in cellular orientation and cellular degeneration were observed. The results obtained from cytotoxic assay also demonstrated a concentration-dependent cytotoxic effect of carthami flos extract. It is concluded that the use of carthami flos as a food additive should be reconsidered.
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Affiliation(s)
- M Nobakht
- Department of Histology, Iran University of Medical Sciences, Tehran, Iran
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Said KB, Fattahi M, Musikas C, Delorme-Hiver A, Abbé JC. A Novel Approach to the Oxidation Potential of the Tc(VII)/Tc(IV) Couple in Hydrochloric Acid Medium through the Reduction of TCO-
4 by Fe2+ Ion. ACTA ACUST UNITED AC 1998. [DOI: 10.1524/ract.1998.83.4.195] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Saberi-Firoozi M, Massarrat S, Zare S, Fattahi M, Javan A, Etaati H, Dehbashi N. Effect of triple therapy or amoxycillin plus omeprazole or amoxycillin plus tinidazole plus omeprazole on duodenal ulcer healing, eradication of Helicobacter pylori, and prevention of ulcer relapse over a 1-year follow-up period: a prospective, randomized, controlled study. Am J Gastroenterol 1995; 90:1419-23. [PMID: 7661161] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Triple therapy and amoxycillin plus omeprazole are the two most widely recommended regimens for the eradication of Helicobacter pylori. However, no controlled studies with a large number of cases are available for the reliable comparison of these two regimens. The aim of this controlled, randomized, prospective study was to compare the effect of these two regimens and a further regimen for metronidazole-resistant patients on duodenal ulcer healing, H. pylori eradication, and prevention of ulcer relapse. METHODS Patients (n = 144) with proven duodenal ulcer (DU) were randomized to one of the three following regimens: group A, omeprazole (2 x 40 mg) plus amoxycillin (4 x 500 mg) for 2 wk; group B, triple therapy: bismuth nitrate (4 x 375 mg) plus metronidazole (4 x 250 mg) and tetracycline (4 x 500 mg) daily for 2 wk and ranitidine (150 mg) for the first week and bismuth nitrate (4 x 375 mg) alone for a further 2 wk; group C, omeprazole (20 mg) plus amoxycillin (4 x 500 mg) and tinidazole (2 x 500 mg) for 2 wk. RESULTS A total of 46 patients in group A, 39 in group B, and 43 in group C completed the study. One patient in group A and three in group B did not tolerate the regimens and dropped out of the study. Control endoscopy was performed 8 wk after the start of treatment and when symptoms appeared (up to 1 yr after the start of treatment). In subjects who completed the study, both the healing rate of DU in group B (97% compared with 74 and 73% in A and C, respectively, p < 0.02) and the H. pylori eradication rate in group B (85 compared with 35%, p < 0.0001 in A and 58%, p < 0.02, in C) were significantly higher than in groups A and C. The symptomatic ulcer relapse during the 1-yr follow-up in patients with initially healed ulcers was similar in all groups (18, 16, and 19% in A, B, and C, respectively). The predictor of healing using logistic regression analysis was night pain (p < 0.05). The predictor of H. pylori eradication was sex (p < 0.05). CONCLUSION The 2-wk triple therapy plus an additional 2-wk treatment with the bismuth derivative (without a prolonged administration of acid suppressing drugs) seems to be an effective and economic treatment not only for the eradication of H. pylori but also for the healing of acute DU. The higher incidence of side effects found after triple therapy compared with the other two regimens was tolerated by the patients.
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Affiliation(s)
- M. Fattahi
- Radiochemistry group, Institute of Nuclear Physics, BP 1, 91406, Orsay Cedex, France
| | - R. Guillaumont
- Radiochemistry group, Institute of Nuclear Physics, BP 1, 91406, Orsay Cedex, France
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