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Mortazavi Farsani SS, Sadeghizadeh D, Babashah S, Rad F, Sadeghizadeh M. The Involvement of Canonical NFκB Pathway in Megakaryocyte Differentiation Induction by Nanocurcumin. Int J Hematol Oncol Stem Cell Res 2023; 17:18-27. [PMID: 37638286 PMCID: PMC10448919 DOI: 10.18502/ijhoscr.v17i1.11709] [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: 12/31/2020] [Accepted: 05/31/2021] [Indexed: 08/29/2023] Open
Abstract
Background: Megakaryopoiesis is characterized by progressive polyploidization and the expression of megakaryocytic markers. Numerous transcription factors and physiological signaling pathways regulate this phenomenon. Megakaryocyte differentiation induction in the K562 cell line and hematopoietic stem cells via nanocurcumin drug has been identified in our previous study. K562 cells are typical Chronic Myelogenous Leukemia (CML) cells that are resistant to apoptosis and express the bcr-abl fusion gene. These cells have the potential to differentiate into erythrocytes and megakaryocytes. Curcumin is well known as a component with strong potential to alter NFκB activity in various cells. NFκB pathway regulates various genes such as apoptotic and immune response genes. The current study attempted to evaluate the possible role of nanocurcumin in NFκB pathway regulation during the megakaryopoiesis process in the K562 cell line. Materials and Methods: Megakaryocyte markers expression and phenotype alteration of nanocurcumin-treated K562 cells have been detected by flow cytometry and microscopy imaging. The nuclear level of the RelA (p65) subunit of NFκB was determined by western blot test in K562 cells during megakaryopoiesis induction via nanocurcumin treatment at different times. The expression of NFκB target genes including c-MYC, BAX, and NQO1 was also analyzed in nanocurcumin-treated K562 cells by quantitative RT-PCR assay at different times. Results: The study has shown that nanocurcumin causes an increase in NFκB activity transiently during megakaryocyte differentiation, followed by a change in the expression of c-MYC, BAX, and NQO1 target genes. Conclusion: The NFκB pathway can be considered a new pathway for inducing megakaryocyte differentiation by nanocurcumin in vitro and in vivo megakaryopoiesis experiments.
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Affiliation(s)
| | - Dina Sadeghizadeh
- Department of Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Sadegh Babashah
- Department of Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Fariba Rad
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Majid Sadeghizadeh
- Department of Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
- Alborz Nanomed Technology Company, Tehran, Iran
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Stoica CE, Iotu A, Nicolau I, Nistor C, Grigore I, Rad F. Psychotic episode with onset in childhood and adolescence – Factors which may influence the outcome. Eur Psychiatry 2022. [PMCID: PMC9568010 DOI: 10.1192/j.eurpsy.2022.1113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction
A psychotic episode might stem from various psychiatric disorders, such as Major Depressive Disorder, Mania, Autism Spectrum Disorder, it might lead to Schizophrenia, or it might be a single event.
Objectives
The study aimed to assess the main comorbidities encountered in the onset of psychotic episodes in children and adolescents, who were hospitalized in a pediatric psychiatry department for at least one night. Furthermore, another objective was to establish whether a family history of mental illness or a poor socio-economic status have bigger impact on the evolution of these patients.
Methods
To analyze the objectives, it was used an observational study, based on patients with the onset of a psychotic episode and associated diagnosis according to ICD-10, evaluated in Child and Adolescent Psychiatric Department of “Prof. Dr. Al. Obregia” Hospital, between 2015-2019. Patients with psychotic episodes with onset related to Major Depressive Disorder and Mania or a personal history of Schizophrenia were excluded.
Results
The most frequent associated comorbidity was Autism Spectrum Disorder. In terms of long-term evolution, patients with comorbidities have poorer outcomes, more relapses and hospitalizations. Family history of mental illness, low socio-economic status, the age of onset were found to be prognostic factors and have an important impact on the outcome.
Conclusions
This study compared patients with psychotic episodes with and without comorbid conditions associated, considering the length of hospitalization period, the evolution and the number of relapses. The presence and the type of comorbidities are important factors of evolution and prognostic for these patients.
Disclosure
No significant relationships.
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Nicolau I, Iotu A, Leti M, Andrei L, Stancu M, Rad F. Alexithymic traits in adolescents with Anorexia Nervosa. Eur Psychiatry 2022. [PMCID: PMC9567548 DOI: 10.1192/j.eurpsy.2022.973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Alexithymia is a construct which has been described in persons under the autistic spectrum. Besides Autistic Spectrum Disorders, alexithymia nowadays is highly correlated with several psychiatric disorders, among them being Eating Disorders. Several studies suggested a “cognitive-affective” division in the inner experience of patients with Anorexia Nervosa, because of their difficulty in describing, identifying and recognising their own emotions as well as others Objectives This study aims to identify how many adolescents diagnosed with Anorexia Nervosa meet the characteristics of alexithymic personality traits and in which domain of these traits they had the most struggles with. Methods The study lot includes 34 adolescents diagnosed with Anorexia Nervosa evaluated by a self report survey: Online Alexithymia Questionnaire-G2 (OAQ-G2). The cut-off scores are: 113 and above - correlated with alexithymia, 95-112 - correlated with possible alexithymia and under 94 - insignificant clinical score. We analyzed the result of every subcategory of the questionnaire in order to determine whether there is an area affected more than others. Results The sample included 34 patients, female to male ratio 31:3, evaluated in the Department of Child and Adolescent Psychiatry, “Prof. Dr. Alexandru Obregia” Psychiatry Hospital. 29,41% had clinically semnificative scores for alexithymic traits, while 52,94% scored for possibile alexithymia according to the OAQ-G2. Conclusions In 82,35% of patients from the lot we identified alexithymic personality traits. The F1 subcategory (difficulty identifying feelings) and F5a (problematic interpersonal process) were the ones that distinguished the alexithymic group from the possible alexithymic one. Disclosure No significant relationships.
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Goodarzi A, Rad F, Esmaeili OS, Forouzeshpour F, Najmabadi H, Azarkeivan A. 3091 – CLINICAL FEATURES AND MOLECULAR BASIS OF THALASSEMIC PATIENTS WITH HOMOZYGOTE FORM OF IVSII-I/ IVSII-I MUTATION AND SYNCHRONIZATION WITH Α-GENE MUTATION. Exp Hematol 2022. [DOI: 10.1016/j.exphem.2022.07.147] [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: 11/04/2022]
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Jafarzadeh N, Gholampour MA, Alivand MR, Kavousi S, Arzi L, Rad F, Sadeghizadeh M, Pornour M. CML derived exosomes promote tumor favorable functional performance in T cells. BMC Cancer 2021; 21:1002. [PMID: 34493241 PMCID: PMC8424959 DOI: 10.1186/s12885-021-08734-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 08/24/2021] [Indexed: 11/10/2022] Open
Abstract
Background Leukemic cells facilitate the creation of the tumor-favorable microenvironment in the bone marrow niche using their secreted factors. There are not comprehensive details about immunosuppressive properties of chronic myelogenous leukemia-derived exosomes in the bone marrow stromal and immune compartment. We explained here that K562-derived exosomes could affect the gene expression, cytokine secretion, nitric oxide (NO) production, and redox potential of human primary cord blood-derived T cells (CB T cells). Methods Human primary cord blood-derived T cells were treated with K562-derived exosomes. We evaluated the expression variation of some critical genes activated in suppressor T cells. The alterations of some inflammatory and anti-inflammatory cytokines levels were assessed using ELISA assay and real-time PCR. Finally, NO production and intracellular ROS level in CB T cells were evaluated using Greiss assay and flow cytometry, respectively. Results Our results showed the over-expression of the genes involved in inhibitory T cells, including NQO1, PD1, and FoxP3. In contrast, genes involved in T cell activation such as CD3d and NFATc3 have been reduced significantly. Also, the expression of interleukin 10 (IL-10) and interleukin 6 (IL-6) mRNAs were significantly up-regulated in these cells upon exosome treatment. In addition, secretion of the interleukin 10, interleukin 6, and interleukin 17 (IL-17) proteins increased in T cells exposed to K562-derived exosomes. Finally, K562-derived exosomes induce significant changes in the NO production and intracellular ROS levels in CB T cells. Conclusions These results demonstrate that K562-derived exosomes stimulate the immunosuppressive properties in CB-derived T cells by inducing anti-inflammatory cytokines such as IL-10, reducting ROS levels, and arising of NO synthesis in these cells. Moreover, considering the elevation of FOXP3, IL-6, and IL-17 levels in these cells, exosomes secreted by CML cells may induce the fates of T cells toward tumor favorable T cells instead of conventional activated T cells. Supplementary Information The online version contains supplementary material available at 10.1186/s12885-021-08734-3.
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Affiliation(s)
- Nazli Jafarzadeh
- Department of Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mohammad Ali Gholampour
- Department of Hematology, Faculty of Medical Science, Tarbiat Modares University, Tehran, Iran
| | - Mohammad-Reza Alivand
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical sciences, Tabriz, Iran
| | - Saeideh Kavousi
- Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Laleh Arzi
- Department of Microbiology, Shahr-e-Qods Branch, Islamic Azad University, Tehran, Iran
| | - Fariba Rad
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Majid Sadeghizadeh
- Department of Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran.
| | - Majid Pornour
- Department of Photo Healing and Regeneration, Medical Laser Research Center, Yara Institute, ACECR, Tehran, Iran.
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Barzegar M, Farsani MA, Rafiee M, Amiri V, Parkhihdeh S, Rad F, Mohammadi MH. Acute promyelocytic leukemia derived extracellular vesicles conserve PML-RARα transcript from storage-inflicted degradation: a stable diagnosis tool in APL patients. Ann Hematol 2021; 100:2241-2252. [PMID: 34236496 DOI: 10.1007/s00277-021-04579-9] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 06/15/2021] [Indexed: 10/20/2022]
Abstract
The early death, which is more common in acute promyelocytic leukemia (APL) patients rather than other types of acute myelocytic leukemia (AML) highlights the importance of appropriate diagnostic method for early detection of this disease. The low sensitivity of the conventional methods, low tumor burden in some patients, and the need for bone marrow sampling are some of the diagnostic challenges on the way of proper detection of APL. Given these, we aimed to compare the efficacy of extracellular vesicles (EVs), as a diagnostic tool, with the existing methods. RT-PCR, qPCR, and flow cytometry were applied on EVs and their corresponding associated cellular component collected from 18 APL new cases, 23 patients with minimal residual disease (MRD), and NB4 cell line. RT-PCR results were positive in both cellular and vesicular components of all new cases, NB4 cells, and EVs in contrary to MRD cases. Normalized copy numbers (NCN) of PML-RARα were 5100 and 3950 for cell and EVs, respectively (p < 0.05). There was a significant difference in the NCN of PML-RARα between cells and EVs in BM samples. Investigating the effect of storage at room temperature revealed that PML-RARα level was retained near to the baseline level in EVs, but there was a significant reduction in its copy number in the cellular component during 7 days. Taken together, given to the acceptable stability, EVs could be introduced as a non-invasive liquid biopsy that alongside existing methods could remarkably change the paradigm of APL diagnostic approaches.
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Affiliation(s)
- Mohieddin Barzegar
- Laboratory Hematology and Blood Banking, School of Allied Medical Science, Shahid Beheshti University of Medical Sciences, Darband St, Qods Sq, Tehran, Iran
| | - Mehdi Allahbakhshian Farsani
- Laboratory Hematology and Blood Banking, School of Allied Medical Science, Shahid Beheshti University of Medical Sciences, Darband St, Qods Sq, Tehran, Iran
- HSCT Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Rafiee
- Laboratory Hematology and Blood Banking, School of Allied Medical Science, Shahid Beheshti University of Medical Sciences, Darband St, Qods Sq, Tehran, Iran
| | - Vahid Amiri
- Laboratory Hematology and Blood Banking, School of Allied Medical Science, Shahid Beheshti University of Medical Sciences, Darband St, Qods Sq, Tehran, Iran
| | - Sayeh Parkhihdeh
- HSCT Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fariba Rad
- Department of Hematology and Blood Transfusion, School of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Mohammad Hossein Mohammadi
- Laboratory Hematology and Blood Banking, School of Allied Medical Science, Shahid Beheshti University of Medical Sciences, Darband St, Qods Sq, Tehran, Iran.
- HSCT Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Ameli MR, Hosseini SH, Rad F, Sajjadi SM. Evaluation of the confidential unit exclusion on Iranian blood donors: An 11-year experience. Asian J Transfus Sci 2021; 15:57-61. [PMID: 34349458 PMCID: PMC8294428 DOI: 10.4103/ajts.ajts_152_18] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 07/21/2019] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND: Confidential unit exclusion (CUE) was recommended by the Food and Drug Administration to permit blood donors confidentially exclude their donation for transfusion. However, its effectiveness as a safety measure to the blood supply is debated. AIMS: We, therefore, evaluated its benefit in identifying donors at risk of transmitting transfusion-transmissible infections (TTIs) and increasing blood safety in our population. SETTINGS AND DESIGN: This was a cross-sectional and retrospective study. The study was performed at the South Khorasan Blood Transfusion Center. MATERIALS AND METHODS: In this descriptive and retrospective study, data of CUE use and data of confirmed positive TTI markers were analyzed for the study period 2006–2016. STATISTICAL ANALYSIS: Data were analyzed using SPSS software version 16. RESULTS: Out of 165,267 donations, the CUE option was selected by 493 (0.3%) donors, most frequently by first-time blood donors, by men, by donors with <12 years schooling, and by 18–24-year-old donors. The data revealed that donations from CUE donors had no higher infection rates. Moreover, CUE showed low sensitivity (0.6%) and low positive predictive value (0.6%) in detecting TTI markers. CONCLUSION: The data do not provide any indication of a safety advantage from CUE; thus, we recommend that the procedure of CUE can be discontinued.
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Affiliation(s)
- Mohammad Reza Ameli
- Iranian Blood Transfusion Organization Research Center, South Khorasan Blood Transfusion Service, Birjand University of Medical Sciences, Birjand, Iran
| | | | - Fariba Rad
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Seyed Mehdi Sajjadi
- Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran
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Rad F, Dabbagh A, Dorgalaleh A, Biswas A. The Relationship between Inflammatory Cytokines and Coagulopathy in Patients with COVID-19. J Clin Med 2021; 10:jcm10092020. [PMID: 34065057 PMCID: PMC8125898 DOI: 10.3390/jcm10092020] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 03/28/2021] [Revised: 05/05/2021] [Accepted: 05/06/2021] [Indexed: 12/17/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19), with a broad range of clinical and laboratory findings, is currently the most prevalent medical challenge worldwide. In this disease, hypercoagulability and hyperinflammation, two common features, are accompanied by a higher rate of morbidity and mortality. We assessed the association between baseline inflammatory cytokine levels and coagulopathy and disease outcome in COVID-19. One hundred and thirty-seven consecutive patients hospitalized with COVID-19 were selected for the study. Baseline interleukin-1 (IL-1), IL-6, and tumor necrosis factor alpha (TNF-α) level were measured at time of admission. At the same time, baseline coagulation parameters were also assessed during the patient’s hospitalization. Clinical findings, including development of thrombosis and clinical outcome, were recorded prospectively. Out of 136 patients, 87 (~64%) had increased cytokine levels (one or more cytokines) or abnormal coagulation parameters. Among them, 58 (~67%) had only increased inflammatory cytokines, 12 (~14%) had only coagulation abnormalities, and 17 (19.5%) had concomitant abnormalities in both systems. It seems that a high level of inflammatory cytokines at admission points to an increased risk of developing coagulopathy, thrombotic events, even death, over the course of COVID-19. Early measurement of these cytokines, and timely co-administration of anti-inflammatories with anticoagulants could decrease thrombotic events and related fatal consequences.
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Affiliation(s)
- Fariba Rad
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj 7591994799, Iran
- Correspondence:
| | - Ali Dabbagh
- Anesthesia Research Center, Shahid Beheshti University of Medical Sciences, Tehran 1998734383, Iran;
| | - Akbar Dorgalaleh
- Department of Hematology and Blood Transfusion, School of Allied Medicine, Iran University of Medical Sciences, Tehran 1449614535, Iran;
| | - Arijit Biswas
- Institute of Experimental Hematology and Transfusion Medicine, University of Bonn, 53127 Bonn, Germany;
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Ravan AP, Goudarzi F, Rafieemehr H, Bahmani M, Rad F, Jafari M, Mahmoodi M. Human umbilical cord-mesenchymal stem cells conditioned medium attenuates CCl 4 induced chronic liver fibrosis. TOXIN REV 2021. [DOI: 10.1080/15569543.2019.1590849] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Alireza Pouyandeh Ravan
- Department of Medical Laboratory Sciences, School of Paramedicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Farjam Goudarzi
- Regenerative Medicine Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Hassan Rafieemehr
- Department of Medical Laboratory Sciences, School of Paramedicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mahdi Bahmani
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Fariba Rad
- Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Mohammad Jafari
- Department of Pathology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Marzieh Mahmoodi
- Department of Biostatistics, School of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran
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Stanciu A, Rad F, Mihailescu I, Mateescu L, Grozavescu R, Andrei E, Budisteanu B, Linca F, Ioana D, Iliescu C, Papuc S, Arghir A, Dobrescu I, Budisteanu M. Multidisciplinary approach in children with autism spectrum disorder. Eur Psychiatry 2021. [PMCID: PMC9471105 DOI: 10.1192/j.eurpsy.2021.256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Autism spectrum disorder (ASD) is characterized by persistent deficits in social communication and social interaction across multiple contexts and it is marked by repetitive sensory–motor behaviours and restricted interests or activities. Now recognized to occur in up to 1% of the population, the prevalence of ASD has registered a steady increase in the past two decades. Heterogeneity of presentation is a hallmark with comorbid psychiatric and medical morbidities frequently reported. Comorbidities mask and delay the diagnosis and are the cause of inadequate therapies. Objectives In the present paper, we studied a cohort of patients with ASD, investigating the rates and types of psychiatric and medical comorbidities. Methods A retrospective study of psychiatric and medical comorbidities was carried out on a sample of 120 participants that met ASD criteria according to DSM-V. The patients were examined with a detailed medical history, physical examination, as well as some additional functional, imaging, laboratory and genetic investigations. The associated conditions considered were: attention deficit/hyperactivity disorder (ADHD), epilepsy, intellectual disability, gastrointestinal symptoms, ophtalmologic manifestations, infections. Results Of the 120 ASD subjects referred, 25 (20.8%) received the diagnosis of epilepsy. ADHD was established in 24 cases (20%). IQ score was obtained in half of the patients, 43.3% of them presenting a severe intellectual disability (IQ<35). Respiratory disorders occured in 25% of the cases. Ophtalmological findings were observed in 9.1% of the cases. Other frequent comorbidities included motor disturbances and feeding problems. Conclusions A better understanding of comorbidities in ASD patients improves interdisciplinary collaboration, thus facilitating effective treatment programs. Disclosure No significant relationships.
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Stoica CE, Cotuna D, Pistea M, Ciubotariu AM, Mihailescu I, Rad F. Atypical episodes of dissociation in an adolescent female - possible relationship with the menstrual cycle. Eur Psychiatry 2021. [PMCID: PMC9479953 DOI: 10.1192/j.eurpsy.2021.1668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Introduction Psychiatric symptoms related with menstrual cycle vary from dysphoria to psychosis. There are only a few cases of menstrual psychosis reported, all characterized by acute onset, against a background of normality, brief duration, with full recovery and a circa-mensual periodicity. Objectives We report a case of dissociative disorder, in a teenage girl, with atypical presentation and an unusual periodicity of symptoms and recoveries. Methods Presentation of a case of dissociative disorder, followed by a review of the similar cases described in the literature. Results We are presenting a case of a 15 years old female, who presented in our Emergency Department for confusion, anxiety, negativism in verbal and non-verbal response, bradylalia and bradypsychia, insomnia for over 48 hours. The symptoms suddenly began two days before arrival in our clinic. From the patient’s personal history, we retain the following: menarche at 14 years old, irregular periods, hypermenorrhea. Patient was born premature, G=1200g, spastic diplegia, periventricular leukomalacia (MRI – 2018). Three similar episodes happened a year ago, with one month periodicity, with spontaneous remission after 5-6 days. Patient was treated with antipsychotics and benzodiazepines for the second and the third episode, but the treatment was stopped six month ago. The investigations results were normal, except for a high level of plasmatic cortisol. Patient fully recovered in the day the menses stopped. Conclusions We considered this case to be atypical due to the sudden debut and recovery and there are still some remaining questions. Is it hormonal related, menstrual related or is it exclusively a psychiatric condition? Disclosure No significant relationships.
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Budisteanu M, Papuc S, Erbescu A, Andrei E, Streata I, Cucu M, Iliescu C, Anghelescu C, Ioana D, Ioana M, Rad F, Arghir A. The psychiatric phenotype of 15q11.2-q13.3 duplications. Eur Psychiatry 2021. [PMCID: PMC9480124 DOI: 10.1192/j.eurpsy.2021.1908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction15q11.2-q13.3 region is prone to genomic rearrangements leading to both deletions and duplications. A wide spectrum of neuropsychiatric conditions, such as developmental delay/intellectual disability (DD/ID), autism, attention-deficit hyperactivity disorder, schizophrenia, epilepsy was reported in association with genomic imbalances of this region.ObjectivesIn this paper we report on 9 children carrying 15q11.2-q13.3 duplications.MethodsSeven boys and two girls, aged 15 months to 15 years, were included in the study. Genomic investigations were carried out by array-based comparative genomic hybridization (Agilent Technologies). In all patients the psychomotor development, dysmorphic features, neuroimaging and EEG anomalies were assessed. Psychologic and psychiatric evaluation was performed with specific tests.ResultsThe size of the duplications ranged from 9.65 Mb to 0.38 Mb. All patients presented speech delay. Autistic behavior and muscular hypotonia were detected in 8 out of 9 patients, DD/ID in 6. Two children presented epileptic seizures, in addition 4 other children had EEG anomalies. Facial dysmorphic features were observed in 5 patients. Neuroimaging studies showed anomalies in 4 children. The smallest region of overlap in our patient group harbors CHRNA7 gene, a candidate for the behavioral abnormalities.Conclusions15q duplications encompassing CHRNA7 gene were associated with different neuropsychiatric features in our patients. Our results further support the association of 15q duplications with neuropsychiatric phenotypes, with clinical heterogeneity and variable severity, which is yet to be explained. Acknowledgment: The research leading to these results has received funding from the EEA RO NO Grant 2014-2021, the project contract No 6/2019.DisclosureNo significant relationships.
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Zardkhoni SZ, Moghaddam AG, Rad F, Ghatee MA, Omidifar N, Ghaedi M, Etemadfar P. Serum Zinc Level in β-Thalassemia Major: A Retrospective Study in Southwest Iran. Hemoglobin 2021; 45:103-106. [PMID: 33896336 DOI: 10.1080/03630269.2021.1918149] [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] [Indexed: 12/31/2022]
Abstract
Thalassemia, which is associated with compound complications, is the most common hereditary anemia in the world. The zinc level is different in patients with thalassemias. This study aimed to determine the zinc status and its relationship with demographic factors and chelation therapy in β-thalassemia major (β-TM) patients. This cross-sectional study was conducted on 102 β-thalassemia (β-thal), patients. Zinc level was evaluated in subjects using the atomic absorption method. The results were analyzed through descriptive statistics, χ2 and Mann-Whitney U tests. Of 102 cases, 92 patients were eligible and evaluated. The mean age was 23 (minimum 11, maximum 43) years. Forty-six percent of cases were males and 54.0% were females. Of the 92 patients taking iron chelators, 29.3% used deferoxamine (DFO), 16.3% deferasirox (DFX), 20.6% DFO and deferiprone (DFP), and 33.8% DFO and DFP. All cases had zinc deficiency, 89.1% had zinc levels <40.0 mg/dL, and 10.9% with zinc levels >40.0 mg/dL. There was a significant relationship between gender and group with zinc levels greater than 40.0 mg/dL and those with less than 40.0 mg/dL. Zinc deficiency is highly prevalent among patients with thalassemia in the city of Yasuj, Iran. There was a significant relationship between zinc levels and gender although no significance was observed between zinc level and age, body mass index (BMI), ferritin, and chelation factors; it is recommended that these patients be periodically evaluated for zinc level. In case of a lack of laboratory evaluation, the use of prophylactic zinc supplementation should be considered for these patients.
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Affiliation(s)
| | - Abdolkarim G Moghaddam
- Department of Pediatrics, Faculty of Medicine, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Fariba Rad
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Mohammad A Ghatee
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran.,Department of Medical Parasitology and Mycology, Faculty of Medicine, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Navid Omidifar
- Department of Medical Pathology, Faculty of Anatomical and Clinical Pathology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mehrorang Ghaedi
- Department of Chemistry, Faculty of Yasuj University, Yasuj, Iran
| | - Peyman Etemadfar
- Department of Pediatrics, Faculty of Medicine, Yasuj University of Medical Sciences, Yasuj, Iran.,Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
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14
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Karimi Shahri M, Niazkar HR, Rad F. COVID-19 and hematology findings based on the current evidences: A puzzle with many missing pieces. Int J Lab Hematol 2020; 43:160-168. [PMID: 33264492 PMCID: PMC7753300 DOI: 10.1111/ijlh.13412] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [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: 08/22/2020] [Revised: 10/28/2020] [Accepted: 11/09/2020] [Indexed: 12/15/2022]
Abstract
In December 2019, a new type of coronavirus was detected for the first time in Wuhan, Hubei Province, China. According to the reported data, the emerging coronavirus has spread worldwide, infecting more than fifty-seven million individuals, leading to more than one million deaths. The current study aimed to review and discuss the hematological findings of COVID-19. Laboratory changes and hematologic abnormalities have been reported repeatedly in COVID-19 patients. WBC count and peripheral blood lymphocytes are normal or slightly reduced while these indicators may change with the progression of the disease. In addition, several studies demonstrated that decreased hemoglobin levels in COVID-19 patients were associated with the severity of the disease. Moreover, thrombocytopenia, which is reported in 5%-40% of patients, is known to be associated with poor prognosis of the disease. COVID-19 can present with various hematologic manifestations. In this regard, accurate evaluation of laboratory indicators at the beginning and during COVID-19 can help physicians to adjust appropriate treatment and provide special and prompt care for those in need.
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Affiliation(s)
- Mehdi Karimi Shahri
- Department of Pathology, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamid R Niazkar
- Student Research Committee, Gonabad University of Medical Sciences, Gonabad, Iran
| | - Fariba Rad
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran.,Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
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15
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Dorgalaleh A, Tabibian S, Mohammadamini M, Bahraini M, Dabbagh A, Noroozi-Aghideh A, Shams M, Anvar A, Namvar A, Baghaipour MR, Rad F, Azadi P. Do congenital bleeding disorders have a protective effect against COVID-19? A prospective study. Int J Lab Hematol 2020; 43:e124-e127. [PMID: 33252816 PMCID: PMC7753473 DOI: 10.1111/ijlh.13413] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 11/10/2020] [Accepted: 11/12/2020] [Indexed: 12/24/2022]
Affiliation(s)
- Akbar Dorgalaleh
- Department of Hematology and Blood Transfusion, School of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Shadi Tabibian
- Iranian Comprehensive Hemophilia Care Center, Blood And Viral Research Center, Tehran, Iran
| | | | - Mehran Bahraini
- Department of Hematology and Blood Transfusion, School of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Ali Dabbagh
- Department of Anesthesia and Anesthesia Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ali Noroozi-Aghideh
- Department of Hematology, Faculty of Paramedicine, AJA University of Medical Sciences, Tehran, Iran
| | - Mahmood Shams
- Department of Medical Laboratory, Faculty of Paramedical Sciences, Babol University of Medical Sciences, Babol, Iran
| | - Ali Anvar
- Iranian Comprehensive Hemophilia Care Center, Tehran, Iran
| | - Ali Namvar
- Iranian Comprehensive Hemophilia Care Center, Tehran, Iran
| | | | - Fariba Rad
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Parviz Azadi
- Iranian Comprehensive Hemophilia Care Center, Tehran, Iran
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16
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Dorgalaleh A, Favaloro EJ, Bahraini M, Rad F. Standardization of Prothrombin Time/International Normalized Ratio (PT/INR). Int J Lab Hematol 2020; 43:21-28. [PMID: 32979036 DOI: 10.1111/ijlh.13349] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 09/02/2020] [Accepted: 09/07/2020] [Indexed: 01/02/2023]
Abstract
The prothrombin time (PT) represents the most commonly used coagulation test in clinical laboratories. The PT is mathematically converted to the international normalized ratio (INR) for use in monitoring anticoagulant therapy with vitamin K antagonists such as warfarin in order to provide test results that are adjusted for thromboplastin and instrument used. The INR is created using two major PT 'correction factors', namely the mean normal PT (MNPT) and the international sensitivity index (ISI). Manufacturers of reagents and coagulometers have made some efforts to harmonizing INRs, for example, by tailoring reagents to specific coagulometers and provide associated ISI values. Thus, two types of ISIs may be generated, with one being a 'general' or 'generic' ISI and others being reagent/coagulometer-specific ISI values. Although these play a crucial role in improving INR results between laboratories, these laboratories reported INR values are known to still differ, even when laboratories use the same thromboplastin reagent and coagulometer. Moreover, ISI values for a specific thromboplastin can vary among different models of coagulometers from a manufacturer using the same method for clot identification. All these factors can be sources of error for INR reporting, which in turn can significantly affect patient management. In this narrative review, we provide some guidance to appropriate ISI verification/validation, which may help decrease the variability in cross laboratory reporting of INRs.
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Affiliation(s)
- Akbar Dorgalaleh
- Department of Hematology and Blood Transfusion, School of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Emmanuel J Favaloro
- Department of Haematology, Sydney Centres for Thrombosis and Haemostasis, Institute of Clinical Pathology and Medical Research, NSW Health Pathology, Westmead Hospital, Westmead, NSW, Australia
| | - Mehran Bahraini
- Department of Hematology and Blood Transfusion, School of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Fariba Rad
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran.,Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
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17
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Dorgalaleh A, Dabbagh A, Tabibian S, Baghaeipour MR, Jazebi M, Bahraini M, Fazeli S, Rad F, Baghaeipour N. Patients with Congenital Bleeding Disorders Appear to be Less Severely Affected by SARS-CoV-2: Is Inherited Hypocoagulability Overcoming Acquired Hypercoagulability of Coronavirus Disease 2019 (COVID-19)? Semin Thromb Hemost 2020; 46:853-855. [PMID: 32557449 PMCID: PMC7645829 DOI: 10.1055/s-0040-1713435] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Akbar Dorgalaleh
- Department of Hematology and Blood Transfusion, School of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Ali Dabbagh
- Anesthesiology Department & Anesthesiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shadi Tabibian
- Department of Hematology and Blood Transfusion, School of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran.,Iranian Comprehensive Hemophilia Care Center, Tehran, Iran
| | | | | | - Mehran Bahraini
- Department of Hematology and Blood Transfusion, School of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Sahar Fazeli
- Diagnostic Laboratory Sciences and Technology Research Center, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Fariba Rad
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran.,Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
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18
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Affiliation(s)
- Azita Azarkeivan
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Nader Cohan
- Hematology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hamid Reza Niazkar
- Student Research Committee, Gonabad University of Medical Sciences, Gonabad, Iran
| | - Arsalan Azizi
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Fariba Rad
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
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19
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Yaghoubi S, Najminejad H, Dabaghian M, Karimi MH, Abdollahpour-Alitappeh M, Rad F, Mahi-Birjand M, Mohammadi S, Mohseni F, Sobhani Lari M, Teymouri GH, Rigi Yousofabadi E, Salmani A, Bagheri N. How hypoxia regulate exosomes in ischemic diseases and cancer microenvironment? IUBMB Life 2020; 72:1286-1305. [PMID: 32196941 DOI: 10.1002/iub.2275] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [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] [Received: 01/10/2020] [Accepted: 03/08/2020] [Indexed: 12/14/2022]
Abstract
Exosomes, as natural occurring vesicles, play highly important roles in the behavior and fate of ischemic diseases and different tumors. Secretion, composition, and function of exosomes are remarkably influenced by hypoxia in ischemic diseases and tumor microenvironment. Exosomes secreted from hypoxic cells affect development, growth, angiogenesis, and progression in ischemic diseases and tumors through a variety of signaling pathways. In this review article, we discuss how hypoxia affects the quantity and quality of exosomes, and review the mechanisms by which hypoxic cell-derived exosomes regulate ischemic cell behaviors in both cancerous and noncancerous cells.
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Affiliation(s)
- Sajad Yaghoubi
- Department of Clinical Microbiology, Iranshahr University of Medical Sciences, Iranshahr, Iran
| | - Hamid Najminejad
- Department of Medical Genetics, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Mehran Dabaghian
- Research and Development Department, Razi Vaccine and Serum Research Institute, Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran
| | | | | | - Fariba Rad
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Motahareh Mahi-Birjand
- Infectious Disease Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Shiva Mohammadi
- Department of Biotechnology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | | | - Mohammad Sobhani Lari
- Cellular and Molecular Biology Research Center, Larestan University of Medical Sciences, Larestan, Iran
| | | | | | | | - Nader Bagheri
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
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20
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Abstract
Objective: First-time blood donors are the most common group of blood donors. They usually have different motivations for blood donation, some of which provoke the donors to hide risk factors of transfusion-transmissible infections (TTIs). Therefore, detection of TTIs among first-time donors is crucial and can decrease the rate of TTIs among blood recipients. This study aimed to evaluate the prevalence of TTIs among first-time donors in the transfusion center of Kohgiluyeh and Boyer-Ahmad Province (KBTC), Iran. Materials and Methods: This retrospective study was conducted with volunteer blood donors in 2004-2014 in the KBTC. Various data, including sex, confidential unit exclusion (CUE), previous donation history, and the laboratory findings of confirmatory tests, were extracted from blood donor software. Data were analyzed by SPSS using the chi-square test. Results: Among 198,501 blood donors, 52,527 (26.46%) were first-time donors, while 145,974 donors (73.54%) were repeat and regular donors. Most of the donors (94.5%) were male, while a minority (5.5%) were female. The CUE option was chosen by 2,237 (1.13%) donors. The incidence of hepatitis B surface antigen (HBsAg) and hepatitis C virus (HCV) was 247 (0.13%) and 134 (0.07%) among the entire study population, respectively. Three donors (0.002%) had confirmed human immunodeficiency virus (HIV), while none of the blood donors were positive for syphilis. Most of the donors with positive HBsAg (95.8%), HCV (86.6%), and HIV (100%) infection were first-time donors. Conclusion: Since TTIs are more common among first-time blood donors than regular and repeat donors, special considerations should be taken into account for this common group of blood donors.
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Affiliation(s)
- Hamid Reza Niazkar
- Gonabad University of Medical Sciences, Student Research Committee, Gonabad, Iran
| | - Akbar Dorgalaleh
- School of Allied Medical Science, Department of Hematology and Blood Transfusion, Tehran, Iran
| | - Fariba Rad
- Yasuj University of Medical Sciences, Cellular and Molecular Research Center, Yasuj, Iran,Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
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21
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Rad F, Sajjadi SM, Azizi A, Maghsudlu M. Confidential unit exclusion (CUE): Double edged sword for blood transfusion center: A ten-year study on volunteer blood donors in Kohgiluyeh and Boyer Ahmad province, Iran. Transfus Clin Biol 2019; 26:253-256. [PMID: 31174915 DOI: 10.1016/j.tracli.2019.05.002] [Citation(s) in RCA: 3] [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: 02/27/2019] [Accepted: 05/02/2019] [Indexed: 11/16/2022]
Abstract
BACKGROUND Confidential unit exclusion (CUE) is a mechanism developed in the1980s to increase blood safety by allowing donors to indicate confidentially if they think their blood is not safe for transfusion. While it has been used widely around the world, the efficacy of this strategy is still unclear. The present study evaluated the efficacy of the CUE system at the Blood Transfusion Center of Kohgiluyeh and Boyer Ahmad Province (KBTC), Iran by comparing the prevalence of transfusion-transmitted infectious (TTIs) in CUE and non-CUE groups. METHODS This descriptive study used data from all volunteer blood donors over a ten-year period. Donors were classified in two groups: CUE and non-CUE. Screening tests were performed for hepatitis B surface antigens (HBs-Ag), hepatitis C virus antibody (HCV-Ab), and Human immunodeficiency virus antibody (HIV-Ab) and any repeatedly reactive results were confirmed by standard methods. Significant differences were determined by Chi2 test. The sensitivity, specificity and PPV of the CUE system were also calculated. RESULTS In the present study, the non-CUE and CUE groups consisted of 98.94% and 1.06% of volunteer blood donors, respectively. First-time donors selected the CUE option more often than repeated and regular donors. The prevalence of TTIs was significantly higher in the CUE group and CUE sensitivity, specificity, and PPV were 5.5%, 98.95%, and 0.96%, respectively. CONCLUSION We recommend the CUE system be pursued for further enhancement of blood safety. However, further studies are needed to establish the overall usefulness of this procedure throughout the whole country.
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Affiliation(s)
- Fariba Rad
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran/Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran.
| | - Seyed Mehdi Sajjadi
- Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran.
| | - Arsalan Azizi
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Mahtab Maghsudlu
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran.
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22
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Zahedpanah M, Takanlu JS, Nikbakht M, Rad F, Farhid F, Mousavi SA, Rad S, Fumani HK, Hosseini Rad SMA, Mohammadi S. Microvesicles of osteoblasts modulate bone marrow mesenchymal stem cell-induced apoptosis to curcumin in myeloid leukemia cells. J Cell Physiol 2019; 234:18707-18719. [PMID: 30916405 DOI: 10.1002/jcp.28511] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 12/02/2018] [Revised: 02/16/2019] [Accepted: 02/20/2019] [Indexed: 11/07/2022]
Abstract
Microvesicles (MVs) derived from bone marrow niche components have an important role in genetic reprogramming and subsequent drugs induce apoptosis in leukemic cells. Here, we have found that undertreatment of curcumin or daunorubicin, the cross-talk through MVs of KG-1-bone marrow mesenchymal stem cells (BMSCs), significantly downregulates the expression of the survival gene osteopontin (OPN), CXCL-12, IL-6 (interleukin-6), STAT-3, and VCAM-1 (vascular cell adhesion molecule 1) in treated-KG-1 cells as well as exclusively upregulates CXCL-12 in BMSCs. Drug treated-cell populations' MVs of both single cultured osteoblasts (OBs) and cocultured KG-1 + BMSCs + OBs similarly upregulate survival mediators' OPN, CXCL-12, IL-6, STAT-3, and VCAM-1 in treated-KG-1 cells. Likewise, isolated MVs from KG-1 cells or communication between KG-1, BMSCs, and OBs treated by drugs increase the expression of genes OPN, CXCL-12, IL-6, STAT3, and VCAM-1 by OBs. MVs derived from KG-1 + BMSCs + OBs reduce drug-induced apoptosis in KG-1 cells. This suggests MVs-mediated information transfer is a procedure whereby OBs could overcome BMSCs-induced apoptosis in drug-treated-KG-1 cells.
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Affiliation(s)
- Mahdi Zahedpanah
- Department of Medical Laboratory Sciences, Faculty of Allied Medicine, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Javid Sabour Takanlu
- Hematology, Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Cell Therapy and Hematopoietic Stem Cell Transplantation Research Center, Tehran, Iran
| | - Mohsen Nikbakht
- Hematology, Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Cell Therapy and Hematopoietic Stem Cell Transplantation Research Center, Tehran, Iran
| | - Fariba Rad
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Fatemeh Farhid
- Hematology, Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Asadollah Mousavi
- Hematology, Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Cell Therapy and Hematopoietic Stem Cell Transplantation Research Center, Tehran, Iran
| | - Soroush Rad
- Hematology, Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Cell Therapy and Hematopoietic Stem Cell Transplantation Research Center, Tehran, Iran
| | - Hosein Kamranzadeh Fumani
- Hematology, Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Cell Therapy and Hematopoietic Stem Cell Transplantation Research Center, Tehran, Iran
| | | | - Saeed Mohammadi
- Hematology, Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Cell Therapy and Hematopoietic Stem Cell Transplantation Research Center, Tehran, Iran
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23
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Kobylinska L, Panaitescu AM, Gabreanu G, Anghel CG, Mihailescu I, Rad F, Nedelcu C, Mocanu I, Constantin C, Badescu SV, Dobrescu I, Neagu M, Geicu OI, Zagrean L, Zagrean AM. PLASMATIC LEVELS OF NEUROPEPTIDES, INCLUDING OXYTOCIN, IN CHILDREN WITH AUTISM SPECTRUM DISORDER, CORRELATE WITH THE DISORDER SEVERITY. Acta Endocrinol (Buchar) 2019; -5:16-24. [PMID: 31149055 DOI: 10.4183/aeb.2019.16] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Context Oxytocin has been investigated as a potential medication for psychiatric disorders. Objective and design This study prospectively investigates correlations between oxytocin and other neuropeptides plasma levels in patients with autism spectrum disorders (ASD) according to severity and treatment, as compared to controls. Subjects and methods Thirty-one children (6 neurotypical as control) participated in this study. The patients were classified into mildly and severely-affected, according to Autism Diagnostic Observation Schedule (ADOS) scores. Oxytocin, orexin A and B, α-MSH, β-endorphins, neurotensin and substance P were investigated using a quantitative multiplex assay or a competitive-ELISA method. Results Plasma oxytocin levels differed between the groups (F (2, 24) =6.48, p=0.006, η2=0.35, observed power=86%): patients with the mild ASD had higher values of plasma oxytocin than those with the severe form (average difference=74.56±20.74pg/mL, p=0.004). Conclusions These results show a negative correlation between plasma levels of oxytocin and the severity of ASD and support the involvement of oxytocinergic mechanisms in ASD.
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Affiliation(s)
- L Kobylinska
- "Prof. Dr. Al. Obregia" Clinical Psychiatry Hospital - Child and Adolescent Psychiatry, Bucharest, Romania.,"Carol Davila" University of Medicine and Pharmacy - Division of Physiology and Fundamental Neuroscience, Bucharest, Romania
| | | | - G Gabreanu
- "Victor Babes" National Institute of Research-Development in the Pathology Domain and Biomedical Sciences - Dept. of Immunohistochemistry, Bucharest, Romania
| | - C G Anghel
- "Prof. Dr. Al. Obregia" Clinical Psychiatry Hospital - Child and Adolescent Psychiatry, Bucharest, Romania.,"Carol Davila" University of Medicine and Pharmacy - Dept. of Child and Adolescent Psychiatry, Bucharest, Romania
| | - I Mihailescu
- "Prof. Dr. Al. Obregia" Clinical Psychiatry Hospital - Child and Adolescent Psychiatry, Bucharest, Romania
| | - F Rad
- "Prof. Dr. Al. Obregia" Clinical Psychiatry Hospital - Child and Adolescent Psychiatry, Bucharest, Romania.,"Carol Davila" University of Medicine and Pharmacy - Dept. of Child and Adolescent Psychiatry, Bucharest, Romania
| | - C Nedelcu
- "Prof. Dr. Al. Obregia" Clinical Psychiatry Hospital - Child and Adolescent Psychiatry, Bucharest, Romania
| | - I Mocanu
- "Prof. Dr. Al. Obregia" Clinical Psychiatry Hospital - Child and Adolescent Psychiatry, Bucharest, Romania
| | - C Constantin
- "Victor Babes" National Institute of Research-Development in the Pathology Domain and Biomedical Sciences - Dept. of Immunology, Bucharest, Romania
| | - S V Badescu
- "Carol Davila" University of Medicine and Pharmacy - Division of Physiology and Fundamental Neuroscience, Bucharest, Romania
| | - I Dobrescu
- "Prof. Dr. Al. Obregia" Clinical Psychiatry Hospital - Child and Adolescent Psychiatry, Bucharest, Romania.,"Carol Davila" University of Medicine and Pharmacy - Dept. of Child and Adolescent Psychiatry, Bucharest, Romania
| | - M Neagu
- "Victor Babes" National Institute of Research-Development in the Pathology Domain and Biomedical Sciences - Dept. of Immunology, Bucharest, Romania
| | - O I Geicu
- University of Bucharest, Faculty of Biology, Dept. of Biochemistry and Molecular Biology, Bucharest, Romania
| | - L Zagrean
- "Carol Davila" University of Medicine and Pharmacy - Division of Physiology and Fundamental Neuroscience, Bucharest, Romania
| | - A M Zagrean
- "Carol Davila" University of Medicine and Pharmacy - Division of Physiology and Fundamental Neuroscience, Bucharest, Romania
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24
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Rad F, Hamidpour M, Dorgalaleh A, Poopak B. The Effect of Demographic Factors and VKORC1 1639 G>A Genotypes on Estimated Warfarin Maintenance Dose in Iranian Patients Under Warfarin Therapy. Indian J Hematol Blood Transfus 2018; 35:167-171. [PMID: 30828166 DOI: 10.1007/s12288-018-0987-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Accepted: 07/06/2018] [Indexed: 12/12/2022] Open
Abstract
Warfarin is an anticoagulant that inhibits vitamin K-dependent clotting factors including factor (F) II, FVII, FIX and FX. Different factors can change the effect of this anticoagulant in clinic. Therefore we assessed impact of VKORC1 -1639 G>A polymorphism and demographic factors on required maintenance dose in Iranian patients under warfarin therapy. The study population included 95 patients with a mean age of 61.3 ± 12.6 years. Target INR range of 2-3 was considered for these patients. The frequency of VKORC1 -1639 G>A polymorphism was assessed by polymerase chain reaction-restriction length polymorphism (PCR-RFLP). Finally the obtain data were analyzed by SPSS software. Our study revealed that 30.5%, 49.5%, and 20% of the patients had VKORC1 (G/G), (G/A), and (A/A) genotypes, respectively. Carriers of VKORC1 G/G genotype required a higher warfarin dose as compared to A/A carriers (4.48 ± 1.32 and 2.7 ± 1.16 mg/day, respectively; P < 0.01). In addition, patients with higher age required lower warfarin therapeutic dose (r = - 0.3, P < 0.01). It seems that -1639 G>A polymorphism and demographic variables had significant effects on warfarin maintenance dose in Iranian patients under warfarin therapy.
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Affiliation(s)
- Fariba Rad
- 1Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Mohsen Hamidpour
- 2Department of Hematology and Blood Banking, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Akbar Dorgalaleh
- 3Department of Hematology and Blood Transfusion, School of Allied Medical Sciences, Iran University of Medical Sciences, Tehran, Iran.,Iranian Comprehensive Hemophilia Center, Tehran, Iran
| | - Behzad Poopak
- 5School of Paramedicine, Tehran Medical Branch of Islamic Azad University, P.O. Box 19395-1495, Tehran, Iran
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25
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Rad F, Kobylinska L, Mihailescu I, Buica A, Dobrescu I. Correlations Between the Parents’ ADHD Score and the Child's ADOS Score in Parents of Children with Comorbid ADHD–Autism Spectrum Disorder. Eur Psychiatry 2017. [DOI: 10.1016/j.eurpsy.2017.01.2211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
From assortative mating theory to genetic background, several ethipathogenic hypotheses in ASD deal with the traits of parents.Backgroundseveral ethipathogenic hypotheses in ASD deal with the traits of parents. The objectives of our study were to measure the ADHD and autism spectrum disorder quotients in parents of children diagnosed with ASD comorbid with ADHD and to correlate the measurements for the tests in parents with those in their children. The specific aim was to identify whether any significant correlations exist.MethodFifty-two pairs of parents of children with autism spectrum disorders and ADHD were included in this study, based on informed consent and the ethical committee's approval. The child's diagnosis was established by a specialist in child and adolescent psychiatry, based on the child's clinical symptoms and on specific diagnostic scales, such as the ADOS and ADHD-rating scale. The parents completed an Autism Spectrum Quotient Scale (ASQS) and an adult ADHD scale. The data were analyzed using SPSS 22.0 and Excel. The correlations were verified using Spearman's non-parametric correlation test.ResultsThere was a strong correlation between the parents’ ADHD scores (r = 0.5, P < 0.001), and a reverse medium correlation between the mother's ADHD score and the child's ADOS score (r = –0.32, P = 0.02). The father's ASQS and ADHD scores correlated between each other (r = 0.31, P = 0.02). There were no correlations between the parents’ and the child's ADHD score, nor between the child's ADOS score and the parents’ ASQS scores.ConclusionOur results suggest that ADHD symptoms in parents of children with autism spectrum disorders comorbid with ADHD might be predictors for the child's prognosis.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Abstract
Children with autism spectrum disorders (ASD) have a less definitive hand preference for certain actions as opposed to neurotypical children. Moreover, left-handedness in children with ASD has been associated with more echolalia. The objective was to conduct a screening of potential risk and associated features for autism spectrum disorders, among which the hand preference of the child. The current aim is to compare the perceived handedness of children with autism spectrum disorders with that of children with other psychiatric pathologies.MethodsEight hundred and forty-two parents completed our risk and associated features screening questionnaire. Out of these, 494 answered the question regarding handedness (209 had children diagnosed with ASD). This asked the parents to state how they perceived their child's handedness. An ADOS assessment has been conducted for 170 of the children whose parents were included in the study, based on clinical relevance for the case. The data were analysed using Excel and SPSS 22.0. For the comparisons, Chi2 and the Kruskal–Wallis test were used.ResultsChildren with ASD had more left-handedness (χ2(2) = 12.54, P = 0.002). There were no differences between boys and girls in terms of perceived handedness in any of the groups. There were no differences in the ADOS scores according to the perceived hand laterality (χ2(2) = 0.58, P = 0.74).ConclusionRightward-asymmetry in regions of corpus callosum has been reported to correlate with symptoms severity in ASD. The finding of different perceived handedness in children with ASD versus children with other psychiatric pathologies is useful for designing appropriate, individualized training programs for motor therapy.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Mohammadi S, Nikbakht M, Sajjadi SM, Rad F, Chahardouli B, Sabour Takanlu J, Rostami S, Alimoghaddam K, Ghavamzadeh A, Ghaffari SH. Reciprocal Interactions of Leukemic Cells with Bone Marrow Stromal Cells Promote Enrichment of Leukemic Stem Cell Compartments in Response to Curcumin and Daunorubicin. Asian Pac J Cancer Prev 2017; 18:831-840. [PMID: 28441794 PMCID: PMC5464507 DOI: 10.22034/apjcp.2017.18.3.831] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
A predominant challenge in developing curative leukemia therapy is interactions of leukemic cells with the bone marrow stromal microenvironment. We aimed to investigate the role of stromal cells, such as bone marrow mesenchymal stromal cells (BMSCs) and osteoblasts (OBs), in curcumin (CUR) and daunorubicin (DNR) induced apoptosis of acute myeloid leukemia (AML) cells. We used KG1 and U937 as leukemia cell line models and treated them with CUR and DNR. The cells were then co-cultured with BMSCs or a combination of BMSCs and OBs as feeders. After 24 hours of co-culture, BMSCs or OBs were sorted and separated from the leukemia cells and apoptosis levels were analyzed by annexin/propidium iodide (PI) staining on flow cytometry. Potentially involved molecular pathways were analyzed at gene and protein levels by Real time PCR and western blotting, respectively. The results showed AML cells co-cultured with BMSCs plus OBs to be more resistant to drug induced-apoptosis compared to co-culture with BMSCs alone or without co-culture. Expression levels of OPN, CXCL-12, IL-6, STAT-3 and VCAM-1 were also significantly up-regulated in OBs and AML cells, at both mRNA and protein levels after co-culture, with concurrent enrichment of CD34+ AML cells. Our data showed, in a stromal cell niche-based model, that OBs revoke the influence of BMSCs on leukemic cells and promote enrichment of both CD34+ and CD34- leukemic stem cell (LSC) compartments in response to CUR and DNR. Up-regulation of OPN, CXCL-12, IL-6, STAT-3 and VCAM-1 in OBs and AML cells in co-culture might be part of molecular mechanisms that block CUR or CUR+DNR-induced apoptosis and promote enrichment of CD34+ and CD34- LSCs.
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Affiliation(s)
- Saeed Mohammadi
- Hematology, Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran.
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Rad F, Pourfathollah AA, Yari F, Mohammadi S, Kheirandish M. Microvesicles preparation from mesenchymal stem cells. Med J Islam Repub Iran 2016; 30:398. [PMID: 27579288 PMCID: PMC5004526] [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: 01/30/2016] [Accepted: 04/13/2016] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Extracellular vesicles are particles ranged from 30 nm to 5μm and subcategorized into three groups; exosomes, microvesicles and apoptotic bodies, each of which have different biological impact. Lack of a standard method for the detection and isolation of MVs has led to a challenging issue that is a worth considering. In this study, we isolated MVs from the conditioned medium of UC-MSCs by four different schemes of ultracentrifugation. METHODS We examined the efficacy of differential centrifugation ranging from 10,000×g to 60,000×g on UCMSCs- derived microvesicles yield and purity. The fractions were evaluated by Dynamic Light Scattering (DLS) method, total protein quantification and flow cytometry. RESULTS UC-MSCs were spindle cells that adhered to plastic culture flasks. These cells expressed MSC markers such as CD44 and CD73, whereas were negative for hematopoietic markers CD45 and CD34. UC-MSCparticles were successfully isolated. Particles were heterogeneous vesicles of approximately 50 to 1250 nm in diameter that bear the surface-expressed molecules UC-MSCs such as; CD90, CD106, CD166 and CD44, and negative for CD34, CD63, and CD9. According to the results of DLS method, centrifugation at 10,000, 20,000, 40,000 and 60,000 ×g, all gave MVs of less than 1000 nm. It is of notion that only at the centrifugation rates of 40,000 and 60,000×g, particles of less than 100 nm in diameter were also obtained. CONCLUSION The choice of exact speed greatly influences the purity of MVs and their yield. Our findings indicate that centrifugation at 20,000×g is appropriate for the purification of UC-MSC-MVs.
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Affiliation(s)
- Fariba Rad
- 1 PhD student of Hematology, Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran. Cellular and Molecular Research Center, Yasuje University of Medical Sciences, Yasuje, Iran.
| | - Ali Akbar Pourfathollah
- 2 Professor of Immunology, Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran, & Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran. , ,(Corresponding author) Professor of Immunology, Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran, & Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran. ,
| | - Fatemeh Yari
- 3 Associate Professor of Immunology, Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran.
| | - Saeed Mohammadi
- 4 PhD of Hematology, Hematology, Oncology and Stem Cell Transplantation Research Center, Tehran University, Medical Sciences, Tehran, Iran.
| | - Maryam Kheirandish
- 5 Associate Professor of Immunology, Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran.
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Farashi S, Rad F, Shahmohammadi B, Imanian H, Azarkeivan A, Najmabadi H. First Report of a Dominantly Inherited β-Thalassemia Caused by a Novel Elongated β-Globin Chain. Hemoglobin 2016; 40:102-7. [DOI: 10.3109/03630269.2015.1135445] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Farashi S, Vakili S, Garous NF, Ashki M, Forouzesh Pour F, Zeinali F, Rad F, Imanian H, Azarkeivan A, Najmabadi H. Identification of Mutations Causing Aberrant Termination and Deficient Splice Donor Site on theHBA1Gene. Hemoglobin 2015; 40:38-43. [DOI: 10.3109/03630269.2015.1088456] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Kobylinska L, Botezatu S, Anghel C, Mihailescu I, Rad F, Mateescu L, Dobrescu I, Petrescu-Ghenea C. Inattention and Hyperactivity/impulsivity Symptoms in Parents of Children Diagnosed with ADHD. Eur Psychiatry 2015. [DOI: 10.1016/s0924-9338(15)30938-x] [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: 12/01/2022] Open
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Sevim P, Ozer S, Rad F. First isolation of Mycobacterium spp. in Mullus spp. in Turkey. Iran J Vet Res 2015; 16:144-9. [PMID: 27175166 PMCID: PMC4827678] [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] [Received: 03/19/2014] [Revised: 12/17/2014] [Accepted: 01/07/2015] [Indexed: 06/05/2023]
Abstract
Ichthyozoonotic Mycobacterium spp. poses health risks both to fish and humans. In this study, the presence of ichthyozoonotic Mycobacterium spp. was investigated in red mullet (Mullus barbatus barbatus) and surmullet (Mullus surmuletus), widely caught species in the Mediterranean and the Aegean Sea. A total of 208 fish samples, provided from fishermen of Mersin province (Turkey) were studied. Using conventional methods, Mycobacterium spp. was isolated and identified at the genus level by PCR and at the species level by PCR-RFLP. Thirteen Mycobacterium spp. were detected in 13 (6.25%) fish samples. Four mycobacteria were identified as M. genavense, three as M. fortuitum, three as M. scrofulaceum, one as M. marinum, one as M. vaccae and one as M. aurum. No signs of mycobacteriosis were observed in fish samples. Findings of this study can contribute to future studies of onichthyozoonotic Mycobacterium spp. in seafood.
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Affiliation(s)
- P Sevim
- Ministry of Food, Agriculture and Livestock, Provincial Directorate of Çorum, Çorum, Turkey
| | - S Ozer
- Department of Aquaculture, Faculty of Fisheries, University of Mersin, 33169 Mersin, Turkey
| | - F Rad
- Department of Aquaculture, Faculty of Fisheries, University of Mersin, 33169 Mersin, Turkey
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Nili-Ahmadabadi M, Haji Akbari F, Rad F, Karimi Z, Iranpour M, Poorganji B, Furuhara T. Microstructural evolution of bainitic steel severely deformed by equal channel angular pressing. J Nanosci Nanotechnol 2010; 10:5986-5993. [PMID: 21133137 DOI: 10.1166/jnn.2010.2582] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
High Si bainitic steel has been received much of interest because of combined ultra high strength, good ductility along with high wear resistance. In this study a high Si bainitic steel (Fe-0.22C-2.0Si-3.0Mn) was used with a proper microstructure which could endure severe plastic deformation. In order to study the effect of severe plastic deformation on the microstructure and properties of bainitic steel, Equal Channel Angular Pressing was performed in two passes at room temperature. Optical, SEM and TEM microscopies were used to examine the microstructure of specimens before and after Equal Channel Angular Pressing processing. X-ray diffraction was used to measure retained austenite after austempering and Equal Channel Angular Pressing processing. It can be seen that retained austenite picks had removed after Equal Channel Angular Pressing which could attributed to the transformation of austenite to martensite during severe plastic deformation. Enhancement of hardness values by number of Equal Channel Angular Pressing confirms this idea.
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Affiliation(s)
- M Nili-Ahmadabadi
- School of Metallurgy and Materials Engineering, Faculty of Engineering, University of Tehran, P.O. Box: 14395-731, Tehran, Iran
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