1
|
Ebrahimi S, Khosravi MA, Raz A, Karimipoor M, Parvizi P. CRISPR-Cas Technology as a Revolutionary Genome Editing tool: Mechanisms and Biomedical Applications. Iran Biomed J 2023; 27:219-46. [PMID: 37873636 DOI: 10.52547/ibj.3898] [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: 10/25/2023]
Abstract
Programmable nucleases are powerful genomic tools for precise genome editing. These tools precisely recognize, remove, or change DNA at a defined site, thereby, stimulating cellular DNA repair pathways that can cause mutations or accurate replacement or deletion/insertion of a sequence. CRISPR-Cas9 system is the most potent and useful genome editing technique adapted from the defense immune system of certain bacteria and archaea against viruses and phages. In the past decade, this technology made notable progress, and at present, it has largely been used in genome manipulation to make precise gene editing in plants, animals, and human cells. In this review, we aim to explain the basic principle, mechanisms of action, and applications of this system in different areas of medicine, with emphasizing on the detection and treatment of parasitic diseases.
Collapse
Affiliation(s)
- S Ebrahimi
- Molecular Systematics Laboratory, Parasitology Department, Pasteur Institute of Iran, Tehran, Iran
- Molecular Medicine Department, Biotechnology Research Center (BRC), Pasteur Institute of Iran, Tehran, Iran
| | - Mohammad Ali Khosravi
- Molecular Medicine Department, Biotechnology Research Center (BRC), Pasteur Institute of Iran, Tehran, Iran
| | - Abbasali Raz
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center (BRC), Pasteur Institute of Iran, Tehran, Iran
| | - Morteza Karimipoor
- Molecular Medicine Department, Biotechnology Research Center (BRC), Pasteur Institute of Iran, Tehran, Iran
| | - Parviz Parvizi
- Molecular Systematics Laboratory, Parasitology Department, Pasteur Institute of Iran, Tehran, Iran
| |
Collapse
|
2
|
Farsi F, Mokhtare M, Tahvilian N, Heydarian A, Karimi S, Ebrahimi S, Ebrahimi-Daryani N. Is There Any Relationship Between Macro- And Micro-Nutrients And Food Groups Intake With The Risk And IBD? Clin Nutr ESPEN 2023. [DOI: 10.1016/j.clnesp.2022.09.179] [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: 03/29/2023]
|
3
|
Gao R, Routman D, Harmsen W, Ebrahimi S, Foote R, Ma D, Neben-Wittich M, McGee L, Patel S, Moore E, Choby G, Tasche K, Price K, Gamez M, Lester S. Adenoid Cystic Carcinoma of the Head and Neck: Patterns of Recurrence and Implications for Radiotherapy. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1400] [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]
|
4
|
van der Pligt P, McNaughton SJ, Kuswara K, Abbott G, Islam S, Ebrahimi S, Ellery S. Assessment of maternal dietary patterns and their relationship with c-reactive protein in pregnancy. Eur J Public Health 2022. [DOI: 10.1093/eurpub/ckac130.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
Inflammation during pregnancy including elevated C-reactive protein (CRP) is associated with adverse pregnancy outcomes. Understanding relationships between CRP and modifiable factors such as dietary patterns is key to identifying opportunities for pregnancy intervention. This study assessed change in adherence to the Dietary Approaches to Stop Hypertension (DASH) and Mediterranean diet (MED-diet) from early to late-pregnancy and the relationship between adherence to both dietary patterns at early-pregnancy with plasma CRP at early and late-pregnancy.
Methods
Women (n = 215) attending antenatal clinics at Monash Health, Melbourne were recruited at 10-20 weeks gestation. Medical history and blood samples were collected at 5 antenatal visits. Adapted DASH and MED-diet scores were calculated from Food Frequency Questionnaires completed at early ([mean±SD] 15±3 weeks) and late (36±1 week) pregnancy. CRP was measured in maternal plasma samples collected at early and late-pregnancy. Adjusted linear regression assessed associations of early-pregnancy DASH and MED-diet scores with early and late-pregnancy plasma CRP.
Results
DASH score at early (23.5±4.8) and late (23.5±5.2) pregnancy was not significantly different (p = 0.971). There was no statistically significant change in MED-diet score from early (3.99±1.6) to late-pregnancy (4.08±1.8) (p = 0.408), however, MED-diet adherence and plasma CRP at early pregnancy were significantly and inversely associated (β= -0.14 [95%CI= -0.27, -0.01], p = 0.039).
Conclusions
Adherence to the MED-diet in early pregnancy may be beneficial in reducing inflammatory markers and assisting optimal pregnancy outcomes. Assessment of dietary patterns is important to assist identifying modifiable factors which impact maternal and child health.
Key messages
Collapse
Affiliation(s)
- P van der Pligt
- Institute for Physical Activity and Nutrition, Deakin University , Geelong, Australia
| | - SJ McNaughton
- Institute for Physical Activity and Nutrition, Deakin University , Geelong, Australia
| | - K Kuswara
- School of Exercise and Nutrition Sciences, Deakin University , Burwood, Australia
| | - G Abbott
- Institute for Physical Activity and Nutrition, Deakin University , Geelong, Australia
| | - S Islam
- Institute for Physical Activity and Nutrition, Deakin University , Geelong, Australia
| | - S Ebrahimi
- School of Exercise and Nutrition Sciences, Deakin University , Burwood, Australia
- The Ritchie Centre, Hudson Institute of Medical Research , Clayton, Australia
| | - S Ellery
- The Ritchie Centre, Hudson Institute of Medical Research , Clayton, Australia
- Department of Obstetrics and Gynaecology, Monash University , Clayton, Australia
| |
Collapse
|
5
|
Ndongo Assomo JGG, Ebrahimi S, Muroya Y, Jay-Gerin JP, Soldera A. Molecular Dynamics Simulation Reveals a Change in the Structure of Liquid Water Near 150 °C, which May Explain Apparent Anomalies in High-Temperature Water Radiolysis. Chemistry Africa 2022. [DOI: 10.1007/s42250-022-00513-2] [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: 11/07/2022]
|
6
|
Ebrahimi S, Lim G, Hobbs BP, Lin SH, Mohan R, Cao W. A hybrid deep learning model for forecasting lymphocyte depletion during radiation therapy. Med Phys 2022; 49:3507-3522. [PMID: 35229311 DOI: 10.1002/mp.15584] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [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: 06/03/2021] [Revised: 01/21/2022] [Accepted: 02/20/2022] [Indexed: 11/06/2022] Open
Abstract
PURPOSE Recent studies have shown that severe depletion of the absolute lymphocyte count (ALC) induced by radiation therapy (RT) has been associated with poor overall survival of patients with many solid tumors. In this paper, we aimed to predict radiation-induced lymphocyte depletion in esophageal cancer patients during the course of RT based on patient characteristics and dosimetric features. METHODS We proposed a hybrid deep learning model in a stacked structure to predict a trend toward ALC depletion based on the clinical information before or at the early stages of RT treatment. The proposed model consisted of four channels, one channel based on long short-term memory (LSTM) network and three channels based on neural networks, to process four categories of features followed by a dense layer to integrate the outputs of four channels and predict the weekly ALC values. Moreover, a discriminative kernel was developed to extract temporal features and assign different weights to each part of the input sequence which enabled the model to focus on the most relevant parts. The proposed model was trained and tested on a dataset of 860 esophageal cancer patients who received concurrent chemoradiotherapy. RESULTS The performance of the proposed model was evaluated based on several important prediction metrics and compared to other commonly used prediction models. The results showed that the proposed model outperformed off-the-shelf prediction methods with at least a 30% reduction in the mean squared error (MSE) of weekly ALC predictions based on pretreatment data.Moreover, using an extended model based on augmented first-week treatment data reduced the MSE of predictions by 70% compared to the model based on the pretreatment data. CONCLUSIONS In conclusion, our model performed well in predicting radiation-induced lymphocyte depletion for RT treatment planning. The ability to predict ALC will enable physicians to evaluate individual RT treatment plans for lymphopenia risk and to identify patients at high risk who would benefit from modified treatment approaches. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- Saba Ebrahimi
- Department of Industrial Engineering, University of Houston, Houston, Texas, USA
| | - Gino Lim
- Department of Industrial Engineering, University of Houston, Houston, Texas, USA
| | - Brian P Hobbs
- Department of Population Health, The University of Texas at Austin, Austin, Texas, USA
| | - Steven H Lin
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Radhe Mohan
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Wenhua Cao
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| |
Collapse
|
7
|
Robin AN, Denton KK, Horna Lowell ES, Dulay T, Ebrahimi S, Johnson GC, Mai D, O’Fallon S, Philson CS, Speck HP, Zhang XP, Nonacs P. Major Evolutionary Transitions and the Roles of Facilitation and Information in Ecosystem Transformations. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.711556] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
A small number of extraordinary “Major Evolutionary Transitions” (METs) have attracted attention among biologists. They comprise novel forms of individuality and information, and are defined in relation to organismal complexity, irrespective of broader ecosystem-level effects. This divorce between evolutionary and ecological consequences qualifies unicellular eukaryotes, for example, as a MET although they alone failed to significantly alter ecosystems. Additionally, this definition excludes revolutionary innovations not fitting into either MET type (e.g., photosynthesis). We recombine evolution with ecology to explore how and why entire ecosystems were newly created or radically altered – as Major System Transitions (MSTs). In doing so, we highlight important morphological adaptations that spread through populations because of their immediate, direct-fitness advantages for individuals. These are Major Competitive Transitions, or MCTs. We argue that often multiple METs and MCTs must be present to produce MSTs. For example, sexually-reproducing, multicellular eukaryotes (METs) with anisogamy and exoskeletons (MCTs) significantly altered ecosystems during the Cambrian. Therefore, we introduce the concepts of Facilitating Evolutionary Transitions (FETs) and Catalysts as key events or agents that are insufficient themselves to set a MST into motion, but are essential parts of synergies that do. We further elucidate the role of information in MSTs as transitions across five levels: (I) Encoded; (II) Epigenomic; (III) Learned; (IV) Inscribed; and (V) Dark Information. The latter is ‘authored’ by abiotic entities rather than biological organisms. Level IV has arguably allowed humans to produce a MST, and V perhaps makes us a FET for a future transition that melds biotic and abiotic life into one entity. Understanding the interactive processes involved in past major transitions will illuminate both current events and the surprising possibilities that abiotically-created information may produce.
Collapse
|
8
|
Ebrahimi S, Khatami S, Mesdaghi M. The Effect of COVID-19 Pandemic on the Infants' Microbiota and the Probability of Development of Allergic and Autoimmune Diseases. Int Arch Allergy Immunol 2021; 183:435-442. [PMID: 34864741 PMCID: PMC8805058 DOI: 10.1159/000520510] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 10/26/2021] [Indexed: 12/12/2022] Open
Abstract
The human microbiota plays a significant role in various mechanisms of the body. The formation of a healthy microbiota, especially in early childhood, has a significant effect on maintaining human health. Since the onset of coronavirus disease 2019 (COVID-19), the disease has caused many changes in human life. According to the available information, many of these factors affect the composition and diversity of the body's microbiota, so this pandemic may alter and disrupt the microbiota and consequently increase the incidence of other diseases such as allergic and autoimmune disorders, especially in children and infants born in this era. In this review, the probable impact of the COVID-19 pandemic on body's microbiota and its relationship with the emergence of future diseases is discussed.
Collapse
Affiliation(s)
- Saba Ebrahimi
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Saghi Khatami
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mehrnaz Mesdaghi
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Allergy and Clinical Immunology, Mofid Children's Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Clinical Research Developement Center, Mofid Children's Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| |
Collapse
|
9
|
Ebrahimi S, Lim GJ. A reinforcement learning approach for finding optimal policy of adaptive radiation therapy considering uncertain tumor biological response. Artif Intell Med 2021; 121:102193. [PMID: 34763808 DOI: 10.1016/j.artmed.2021.102193] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 08/25/2021] [Accepted: 10/05/2021] [Indexed: 12/01/2022]
Abstract
Recent studies have shown that a tumor's biological response to radiation varies over time and has a dynamic nature. Dynamic biological features of tumor cells underscore the importance of using fractionation and adapting the treatment plan to tumor volume changes in radiation therapy treatment. Adaptive radiation therapy (ART) is an iterative process to adjust the dose of radiation in response to potential changes during the treatment. One of the key challenges in ART is how to determine the optimal timing of adaptations corresponding to tumor response to radiation. This paper aims to develop an automated treatment planning framework incorporating the biological uncertainties to find the optimal adaptation points to achieve a more effective treatment plan. First, a dynamic tumor-response model is proposed to predict weekly tumor volume regression during the period of radiation therapy treatment based on biological factors. Second, a Reinforcement Learning (RL) framework is developed to find the optimal adaptation points for ART considering the uncertainty in biological factors with the goal of achieving maximum final tumor control while minimizing or maintaining the toxicity level of the organs at risk (OARs) per the decision-maker's preference. Third, a beamlet intensity optimization model is solved using the predicted tumor volume at each adaptation point. The performance of the proposed RT treatment planning framework is tested using a clinical non-small cell lung cancer (NSCLC) case. The results are compared with the conventional fractionation schedule (i.e., equal dose fractionation) as a reference plan. The results show that the proposed approach performed well in achieving a robust optimal ART treatment plan under high uncertainty in the biological parameters. The ART plan outperformed the reference plan by increasing the mean biological effective dose (BED) value of the tumor by 2.01%, while maintaining the OAR BED within +0.5% and reducing the variability, in terms of the interquartile range (IQR) of tumor BED, by 25%.
Collapse
Affiliation(s)
- Saba Ebrahimi
- Department of Industrial Engineering, University of Houston, 4800 Calhoun Road, Houston, TX 77204, United States of America.
| | - Gino J Lim
- Department of Industrial Engineering, University of Houston, 4800 Calhoun Road, Houston, TX 77204, United States of America.
| |
Collapse
|
10
|
Ebrahimi S, Lim G, Liu A, Lin SH, Ellsworth SG, Grassberger C, Mohan R, Cao W. Radiation-Induced Lymphopenia Risks of Photon Versus Proton Therapy for Esophageal Cancer Patients. Int J Part Ther 2021; 8:17-27. [PMID: 34722808 PMCID: PMC8489492 DOI: 10.14338/ijpt-20-00086] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Accepted: 02/02/2021] [Indexed: 12/03/2022] Open
Abstract
Purpose To assess possible differences in radiation-induced lymphocyte depletion for esophageal cancer patients being treated with the following 3 treatment modalities: intensity-modulated radiation therapy (IMRT), passive scattering proton therapy (PSPT), and intensity-modulated proton therapy (IMPT). Methods and Materials We used 2 prediction models to estimate lymphocyte depletion based on dose distributions. Model I used a piecewise linear relationship between lymphocyte survival and voxel-by-voxel dose. Model II assumes that lymphocytes deplete exponentially as a function of total delivered dose. The models can be fitted using the weekly absolute lymphocyte counts measurements collected throughout treatment. We randomly selected 45 esophageal cancer patients treated with IMRT, PSPT, or IMPT at our institution (15 per modality) to demonstrate the fitness of the 2 models. A different group of 10 esophageal cancer patients who had received PSPT were included in this study of in silico simulations of multiple modalities. One IMRT and one IMPT plan were created, using our standards of practice for each modality, as competing plans to the existing PSPT plan for each patient. We fitted the models by PSPT plans used in treatment and predicted absolute lymphocyte counts for IMRT and IMPT plans. Results Model validation on each modality group of patients showed good agreement between measured and predicted absolute lymphocyte counts nadirs with mean squared errors from 0.003 to 0.023 among the modalities and models. In the simulation study of IMRT and IMPT on the 10 PSPT patients, the average predicted absolute lymphocyte count (ALC) nadirs were 0.27, 0.35, and 0.37 K/μL after IMRT, PSPT, and IMPT treatments using Model I, respectively, and 0.14, 0.22, and 0.33 K/μL using Model II. Conclusions Proton plans carried a lower predicted risk of lymphopenia after the treatment course than did photon plans. Moreover, IMPT plans outperformed PSPT in terms of predicted lymphocyte preservation.
Collapse
Affiliation(s)
- Saba Ebrahimi
- Department of Industrial Engineering, University of Houston, Houston, TX, USA
| | - Gino Lim
- Department of Industrial Engineering, University of Houston, Houston, TX, USA
| | - Amy Liu
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Steven H Lin
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | | | - Clemens Grassberger
- Departments of Radiation Oncology, Massachusetts General Hospital, Boston, MA, USA
| | - Radhe Mohan
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Wenhua Cao
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| |
Collapse
|
11
|
Ebrahimi S, Patel S, McGee L, Garcia J, Ma D, Foote R, Garces Y, Neben Wittich M, Price K, Schmitt A, Zhai Q, May B, Nagel T, Hinni M, Routman D, Chintakuntlawar A, Rwigema J. Clinical Outcomes of Histologically Verified Salivary Ductal Carcinomas: Retrospective Analysis of 89 Patients Treated Over 47 Years. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1188] [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: 11/28/2022]
|
12
|
Ebrahimi S, Patel S, Ma D, Rwigema J, Foote R, Lester S, Nagel T, Eric M, DeWees T, Golafshar M, Routman D, Halyard M, Neben-Wittich M, McGee L. Comparison of Clinical and Toxicity Outcomes of Adenoid Cystic Carcinomas Treated With Intensity Modulated Radiation Therapy vs. Proton Radiotherapy. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1187] [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]
|
13
|
Hassani H, Ebrahimi S. Fe3O4–SiO2–Bi2O3-catalyzed One-Pot Synthesis of Tetrahydrobenzo[b]pyran Derivatives Under Solvent-Free Conditions. Russ J Org Chem 2021. [DOI: 10.1134/s1070428021080157] [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: 11/23/2022]
|
14
|
Ebrahimi S, Nonacs P. Genetic diversity through social heterosis can increase virulence in RNA viral infections and cancer progression. R Soc Open Sci 2021; 8:202219. [PMID: 34035948 PMCID: PMC8097216 DOI: 10.1098/rsos.202219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 04/12/2021] [Indexed: 05/04/2023]
Abstract
In viral infections and cancer tumours, negative health outcomes often correlate with increasing genetic diversity. Possible evolutionary processes for such relationships include mutant lineages escaping host control or diversity, per se, creating too many immune system targets. Another possibility is social heterosis where mutations and replicative errors create clonal lineages varying in intrinsic capability for successful dispersal; improved environmental buffering; resource extraction or effective defence against immune systems. Rather than these capabilities existing in one genome, social heterosis proposes complementary synergies occur across lineages in close proximity. Diverse groups overcome host defences as interacting 'social genomes' with group genetic tool kits exceeding limited individual plasticity. To assess the possibility of social heterosis in viral infections and cancer progression, we conducted extensive literature searches for examples consistent with general and specific predictions from the social heterosis hypothesis. Numerous studies found supportive patterns in cancers across multiple tissues and in several families of RNA viruses. In viruses, social heterosis mechanisms probably result from long coevolutionary histories of competition between pathogen and host. Conversely, in cancers, social heterosis is a by-product of recent mutations. Investigating how social genomes arise and function in viral quasi-species swarms and cancer tumours may lead to new therapeutic approaches.
Collapse
Affiliation(s)
- Saba Ebrahimi
- Department of Ecology and Evolutionary Biology, University of California, 621 Young Drive South, Los Angeles, CA 90024, USA
| | - Peter Nonacs
- Department of Ecology and Evolutionary Biology, University of California, 621 Young Drive South, Los Angeles, CA 90024, USA
| |
Collapse
|
15
|
Nahid Samiei R, Ebrahimi S, Fani M, Ghafari S, Makvandi M, Khodadad N, Tabasi M, Teimoori A. In vitro effect of some nucleoside reverse transcriptase inhibitors against HSV-1 replication. Eur Rev Med Pharmacol Sci 2021; 24:1454-1459. [PMID: 32096195 DOI: 10.26355/eurrev_202002_20204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The current study was designed to investigate the effects of some nucleoside reverse transcriptase inhibitors (NRTIs) on HSV-1 infection. MATERIALS AND METHODS Initially, the SwissTargetPrediction server was used to predict the interactions between HSV-1 thymidine kinase and acyclovir, stavudine, zidovudine, didanosine, and entecavir. The effect of each component on Vero cell viability was assessed by the MTT assay. After treatment, the cell supernatants were collected, and HSV-1 replication was analyzed by quantitative real-time PCR. RESULTS The qPCR results revealed that viral titers were reduced 41, 40, 19, 44, and 31-fold in the presence of acyclovir, zidovudine, stavudine, didanosine, and entecavir, respectively. CONCLUSIONS Our findings indicate that NRTIs significantly reduce HSV-1 replication in cell culture.
Collapse
Affiliation(s)
- R Nahid Samiei
- Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | | | | | | | | | | | | | | |
Collapse
|
16
|
Omidpanah N, Ebrahimi S, Raygani AV, Mozafari H, Rezaei M. Total Antioxidant Capacity, Catalase Activity and Salivary Oxidative Parameters in Patients with Temporomandibular Disorders. Front Dent 2020; 17:1-6. [PMID: 33615292 PMCID: PMC7883650 DOI: 10.18502/fid.v17i16.4179] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Accepted: 07/28/2020] [Indexed: 01/24/2023] Open
Abstract
Objectives: Temporomandibular disorders (TMD) are characterized by pain or discomfort in the temporomandibular joint, periauricular region, masticatory muscles, and neck on one or both sides. It may also be associated with joint sounds, restricted mandibular movements and mandibular deviation. Oxidative agents may have a deleterious role in the pathogenesis of joint diseases, and oxidative stress can lead to TMD. The aim of this study was to assess the oxidative stress biomarkers in the saliva of TMD patients and healthy controls. Materials and Methods: This case-control study was conducted on 30 patients with TMDs (5 males and 25 females) with a mean age of 30.7±13.2 years, and 30 healthy controls (5 males and 25 females) with a mean age of 29.16±11.2 years. Saliva samples were collected according to the standard protocol and the total antioxidant capacity of the saliva (non-enzymatic), catalase activity, and malondialdehyde (MDA) levels were measured using the ferric reducing ability of plasma, Aebi’s method, and high-performance liquid chromatography, respectively. Finally, The MDA levels were analyzed by the Mann-Whitney test. Other quantitative parameters were analyzed by independent t-test. Results: TMD patients had significantly higher salivary levels of MDA compared to the control group (P=0.001). But there were no significant differences in catalase (P=0.49) and total antioxidant capacity (P=0.22) of TMD patients and healthy controls. Conclusion: It seems that oxidative stress may be involved in the pathogenesis of TMDs.
Collapse
Affiliation(s)
- Neda Omidpanah
- Department of Oral Medicine, School of Dentistry, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Saba Ebrahimi
- Private Practice, School of Dentistry, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Asad Vaisi Raygani
- Fertility and Infertility Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran.,Department of Biochemistry, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Hadi Mozafari
- Fertility and Infertility Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mansour Rezaei
- Department of Biostatistics, Kermanshah University of Medical Sciences, Kermanshah, Iran
| |
Collapse
|
17
|
Sharifi K, Behbahani TJ, Ebrahimi S, Sabeti M, Soflaee S. A NEW COMPUTATIONAL FLUID DYNAMICS STUDY OF A LIQUID-LIQUID HYDROCYCLONE IN THE TWO PHASE CASE FOR SEPARATION OF OIL DROPLETS AND WATER. Braz J Chem Eng 2019. [DOI: 10.1590/0104-6632.20190364s20170619] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Kh. Sharifi
- Research Institute of Petroleum Industry, Iran
| | | | - S. Ebrahimi
- Islamic Azad University South Tehran Branch, Iran
| | - M. Sabeti
- Isfahan University of Technology, Iran
| | - S. Soflaee
- University of Sistan and Baluchestan, Iran
| |
Collapse
|
18
|
Rahimifar P, Hashemi H, Malek M, Ebrahimi S, Tabibian E, Alidoosti A, Mousavi A, Yarandi F. Diagnostic value of 3 T MR spectroscopy, diffusion-weighted MRI, and apparent diffusion coefficient value for distinguishing benign from malignant myometrial tumours. Clin Radiol 2019; 74:571.e9-571.e18. [DOI: 10.1016/j.crad.2019.03.011] [Citation(s) in RCA: 7] [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] [Received: 03/05/2018] [Accepted: 03/13/2019] [Indexed: 10/27/2022]
|
19
|
Rojhani-Shirazi Z, Amiri Z, Ebrahimi S. Effects of Plantar Flexor Muscles Fatigue on Postural Control during Quiet Stance and External Perturbation in Healthy Subjects. J Biomed Phys Eng 2019; 9:233-242. [PMID: 31214529 PMCID: PMC6538917] [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: 02/10/2017] [Accepted: 06/17/2017] [Indexed: 06/09/2023]
Abstract
BACKGROUND The maintenance of postural control is a key component in dynamic physical activity, especially during muscle fatigue and against external forces. Despite many studies in this field, there is no consensus regarding the effects of plantar flexor muscles fatigue on postural control during different postural tasks. OBJECTIVE To evaluate the effects of plantar flexor muscles fatigue on postural control during quiet stance and external perturbation in healthy subjects. MATERIAL AND METHODS Twenty four healthy individuals (20-35 years) participated this interventional study. The foot center of pressure data was measured using a single force platform, and then the postural control parameters, including the center of pressure displacement and velocity in the anterior-posterior and medial-lateral direction and also path length calculated under two conditions; quiet and perturbed stance, before and after plantar flexor muscles fatigue. RESULTS The statistical analysis demonstrated that mean displacement and velocity of the center of pressure in the anterior-posterior direction and also path length increased after the fatigue protocol in the perturbed condition. However, fatigue had no significant effects on postural control parameters in the quiet standing condition. CONCLUSION These results indicated that the effects of muscle fatigue on postural control depend on the difficulty of the task and the relevance of proprioceptive information. The postural control system appears to use distinct control strategies in different situations such as quiet and perturbed stance conditions, and these strategies may be differentially altered by fatigue. In conclusion, due to the potential risk of loss of balance, it is important to take the role of plantar flexor muscle fatigue into account during more difficult postural tasks.
Collapse
Affiliation(s)
- Z Rojhani-Shirazi
- Physical Therapy Department, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
- Rehabilitation Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Z Amiri
- Physical Therapy Department, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
- Rehabilitation Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - S Ebrahimi
- Physical Therapy Department, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
- Rehabilitation Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| |
Collapse
|
20
|
Kazemi F, Kiasat A, Ebrahimi S. Efficient Conversion of Oxiranes to Thiiranes with Ammonium Thiocyanate Catalysed with LiBF4. Journal of Chemical Research 2019. [DOI: 10.3184/030823402103171573] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Oxiranes are efficiently converted into the corresponding thiiranes by ammonium thiocyanate in the presence of catalytic amounts of LiBF4 in excellent yields under mild and non-aqueous conditions
Collapse
Affiliation(s)
- F. Kazemi
- Chemistry Department, College of Science, Shahid Chamran University, Ahvaz, Iran
| | - A.R. Kiasat
- Chemistry Department, College of Science, Shahid Chamran University, Ahvaz, Iran
| | - S. Ebrahimi
- Chemistry Department, College of Science, Shahid Chamran University, Ahvaz, Iran
| |
Collapse
|
21
|
Ebrahimi S, Kamali F, Razeghi M, Haghpanah SA. Correlation between Trunk-Pelvis Inter-Segmental Coordination Parameters during Walking and Disability Level in Chronic Low Back Pain Patients. J Biomed Phys Eng 2018; 8:193-202. [PMID: 29951446 PMCID: PMC6015648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 08/12/2017] [Indexed: 06/08/2023]
Abstract
BACKGROUND Chronic low back pain (CLBP) disability has been particularly frustrating because its treatment has been a great therapeutic challenge. Disability has been suggested to depend on different factors that should be found and considered in the medical management. The inter-segmental coordination is often impaired in CLBP subjects; however, to the best of our knowledge, there is no evidence about the relationship between the existence of coordination problems and disability in CLBP patients. OBJECTIVE To evaluate the correlation between sagittal plane trunk-pelvis inter-segmental coordination parameters during walking and disability level in CLBP patients. METHODS Kinematic data were collected from 16 non-specific CLBP (18-40 years) volunteers during walking. Sagittal plane time-normalized segmental angles and velocities were used to calculate continuous relative phase for each data point. Coordination parameters, mean absolute relative phase (MARP) and deviation phase (DP) were derived to quantify the trunk-pelvis coordination pattern and variability during gait cycles, respectively. The disability level was quantified through Oswestry Disability Index (ODI) questionnaire. Pearson correlation coefficient was used to find the probable correlation between coordination parameters and disability level. RESULTS The analysis demonstrated a significant correlation between sagittal plane MARP or DP and disability level (%ODI) in CLBP subjects during walking (r= -0.806 P<0.001 and r= -0.856, P<0.001, respectively). CONCLUSION This study demonstrated that the lower the MARP (more in-phase pattern) and DP (less variable pattern) in the CLBP subjects, the more disability existing in such patients. The results suggest that clinicians should look beyond pain management when prescribing rehabilitation for CLBP and consider interventions that target segmental coordination improvement to manage CLBP induced disability.
Collapse
Affiliation(s)
- S Ebrahimi
- Department of Physical Therapy, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
- Rehabilitation Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - F Kamali
- Department of Physical Therapy, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
- Rehabilitation Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M Razeghi
- Department of Physical Therapy, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
- Rehabilitation Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - S A Haghpanah
- School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran
| |
Collapse
|
22
|
Ebrahimi S, Mollaei H, Hoshyar R. Ziziphus Jujube: a review study of its anticancer effects in various tumor models invitro and invivo. ACTA ACUST UNITED AC 2017; 63:122-127. [PMID: 29096755 DOI: 10.14715/cmb/2017.63.10.19] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 10/21/2017] [Accepted: 10/22/2017] [Indexed: 11/18/2022]
Abstract
The growing rate of cancer incidences and inefficiency of current therapies have made scientists to find novel agents such as medicinal plants. Ziziphus jujube is one of these plants whose pharmaceutical effects have been studied for a long time. Recent investigations have proved that bioactive compounds of Ziziphus jujube including triterpenic acids, flavonoids, cerebrosides, phenolic acids, α tocopherol, β carotene, and polysaccharides have anti-proliferative effects on several cancerous cell lines and animals. The present study aimed to cover all previous invitro and invivo findings and some of molecular mechanisms of its anticancer property.
Collapse
Affiliation(s)
- S Ebrahimi
- Student Research Committee, Birjand University of Medical Sciences, Birjand, Iran
| | - H Mollaei
- Cellular & Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - R Hoshyar
- Cellular & Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran
| |
Collapse
|
23
|
Noorafshan A, Ebrahimi S, Esmaeilzadeh E, Arabzadeh H, Bahmani-Jahromi M, Ashkani-Esfahani S. EFFECTS OF ARNEBIA EUCHROMA EXTRACT ON STREPTOZOTOCIN INDUCED DIABETES IN RATS: A STEREOLOGICAL STUDY. Acta Endocrinol (Buchar) 2017; 13:272-277. [PMID: 31149187 PMCID: PMC6516580 DOI: 10.4183/aeb.2017.272] [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] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Diabetes mellitus (DM) is considered as an important health confounder in our world, which necessitates its better management by new methods. In this study, we have evaluated the effects of oral Arnebia Euchroma (AE) extract on different stereological parameters of the pancreas as well as blood glucose in Streptozotocin (STZ)-induced diabetes in rats. METHODS We divided 48 Wistar rats into 4 groups: C1 including normal rats, C2 not-treated diabetic rats, E1 with diabetic rats receiving 100 mg/kg AE extract orally, and E2 including diabetic rats treated with 300 mg/kg AE extract. Stereological study was done and the levels of blood glucose were also estimated and compared between experimental and control groups. RESULTS There were significant differences in volumes of pancreatic islets, β cell populations, blood glucose levels in AE treated groups compared with not-treated diabetic group. CONCLUSION Although AE did not completely prevent or heal the pancreatic damage, its oral administration showed promising effects on maintaining the population of beta cells, the main insulin secreting cells, after STZ-induced injury and also lowered blood glucose levels compared to the not-treated diabetic group.
Collapse
Affiliation(s)
- A. Noorafshan
- Histomorphometry and Stereology Research Center, Shiraz, Iran
| | | | - E. Esmaeilzadeh
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - H. Arabzadeh
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M. Bahmani-Jahromi
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - S. Ashkani-Esfahani
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| |
Collapse
|
24
|
Nasri F, Gharesi-Fard B, Namavar Jahromi B, Farazi-Fard MA, Banaei M, Davari M, Ebrahimi S, Anvar Z. Sperm DNA methylation of H19 imprinted gene and male infertility. Andrologia 2017; 49. [PMID: 28295500 DOI: 10.1111/and.12766] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2016] [Indexed: 02/06/2023] Open
Abstract
Infertility affects up to 15% of reproductive-aged couples worldwide, with male factor being detected in 40%-50% of the cases. Proper sperm production is associated with the establishment of appropriate epigenetic marks in developing germ cells. Several studies have demonstrated the association between abnormal spermatogenesis and epigenetic disturbances with the major focus on DNA methylation. Imprinted genes are expressed in a parent-of-origin-specific manner, and the role of their DNA methylation in proper spermatogenesis has been documented recently. The existing evidence along with the absence of relevant data in south of Iran prompted us to study the methylation of H19 imprinted gene in spermatozoa of idiopathic infertile patients (males with abnormalities in sperm parameters) and healthy controls by Combined Bisulfite Restriction Analysis. According to our results, the lowest methylation percentage of H19 imprinted gene belongs to three cases with sperm characteristics under normal range (two cases Oligoasthenoteratozoospermia and one case Oligoteratozoospermia). However, our results show that the median of methylation percentage for H19 is not statistically significant between case and control groups. Our results and those of others introduce DNA methylation as a potential marker of fertility and should be investigated with more patients in future studies.
Collapse
Affiliation(s)
- F Nasri
- Department of Immunology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - B Gharesi-Fard
- Department of Immunology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.,Infertility Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - B Namavar Jahromi
- Infertility Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.,Department of Obstetrics and Gynecology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M A Farazi-Fard
- Department of Medical Genetics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M Banaei
- IVF Division, Ghadir-Mother and Child Hospital of Shiraz, Shiraz, Iran
| | - M Davari
- Department of Obstetrics and Gynecology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.,IVF Division, Ghadir-Mother and Child Hospital of Shiraz, Shiraz, Iran
| | - S Ebrahimi
- Department of Immunology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Z Anvar
- Infertility Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.,Department of Obstetrics and Gynecology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| |
Collapse
|
25
|
Fallah M, Shabanpor M, Zakerinia M, Ebrahimi S. Risk assessment of gas oil and kerosene contamination on some properties of silty clay soil. Environ Monit Assess 2015; 187:437. [PMID: 26085279 DOI: 10.1007/s10661-015-4633-0] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Accepted: 05/21/2015] [Indexed: 06/04/2023]
Abstract
Soil and ground water resource pollution by petroleum compounds and chemical solvents has multiple negative environmental impacts. The aim of this research was to investigate the impacts of kerosene and gas oil pollutants on some physical and chemical properties, breakthrough curve (BTC), and water retention curve (SWRC) of silty clay soil during a 3-month period. Therefore, some water-saturated soils were artificially contaminated in the pulse condition inside some glassy cylinders by applying half and one pore volume of these pollutants, and then parametric investigations of the SWRC were performed using RETC software for Van Genukhten and Brooks-Corey equations in the various suctions and the soil properties were determined before and after pollution during 3 months. The results showed that gas oil and kerosene had a slight effect on soil pH and caused the cumulative enhancement in the soil respiration, increase in the bulk density and organic matter, and reduction in the soil porosity and electrical and saturated hydraulic conductivity. Furthermore, gas oil retention was significantly more than kerosene (almost 40%) in the soil. The survey of SWRC indicated that the contaminated soil samples had a little higher amount of moisture retention (just under 15% in most cases) compared to the unpolluted ones during this 3-month period. The parametric analysis of SWRC demonstrated an increase in the saturated water content, Θ s, from nearly 49% in the control sample to just under 53% in the polluted ones. Contaminants not only decreased the residual water content, Θ r, but also reduced the SWRC gradient, n, and amount of α parameter. The evaluation of both equations revealed more accurate prediction of SWRC's parameters by Van Genukhten compared to those of Brooks and Corey.
Collapse
Affiliation(s)
- M Fallah
- Faculty of Agriculture, Guilan University, Rasht, Iran,
| | | | | | | |
Collapse
|
26
|
Abstract
Nonsyndromic cleft lip with or without palate (CL/P) is thought to be caused by the interplay of genetic and environmental factors, and this has thus hindered the process of identifying genetic causative factors. Numerous studies in the past decade have implicated IRF6 in CL/P, but this has not often been replicated in other populations. In specific, the only etiologic single-nucleotide polymorphism (SNP) identified in the IRF6 locus (rs642961) has recently been shown not to be associated with CL/P in diverse populations. We therefore used a genewide tagging SNP (tagSNP) haplotyping approach (including rs642961 as a tagSNP) to detect all potential risk-conferring haplotypes and combined this with detailed subphenotyping of CL/P cases ( N = 150) according to severity. We observed a significant overrepresentation of a tagSNP haplotype carrying the rs642961 risk allele in the most severe subphenotype of CL/P (complete bilateral CL/P; P = 0.008, odds ratio = 4.97, 95% confidence interval = 1.33 to 18.46). It was recently shown that >80% of IRF6 mutations in syndromic CL/P occur on the same haplotype background. We therefore suggest that IRF6 is a marker of CL/P severity.
Collapse
Affiliation(s)
- S. Kerameddin
- Department of Plastic and Reconstructive Surgery, Iran University of Medical Sciences, Tehran, Iran
| | - A. Namipashaki
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - S. Ebrahimi
- Faculty of New Sciences and Technology, University of Tehran, Tehran, Iran
| | - N. Ansari-Pour
- Faculty of New Sciences and Technology, University of Tehran, Tehran, Iran
| |
Collapse
|
27
|
Montazeri A, Ebrahimi S, Rafii-Tabar H. A molecular dynamics investigation of buckling behaviour of hydrogenated graphene. Molecular Simulation 2014. [DOI: 10.1080/08927022.2014.968849] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
28
|
Hosseini M, Sahraei E, Khoshfetrat AB, Ebrahimi S. Nitrate and Nitrite Removal Using a Continuous Heterotrophic Denitrifying Granular Sludge Bioreactor. Chem Eng Technol 2013. [DOI: 10.1002/ceat.201300254] [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: 11/07/2022]
|
29
|
|
30
|
Tajaddini S, Ebrahimi S, Behnam B, Bakhtiyari M, Joghataei MT, Abbasi M, Amini M, Amanpour S, Koruji M. Antioxidant effect of manganese on the testis structure and sperm parameters of formalin-treated mice. Andrologia 2013; 46:246-53. [DOI: 10.1111/and.12069] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/12/2012] [Indexed: 12/01/2022] Open
Affiliation(s)
- S. Tajaddini
- Department of Basic Sciences; Payame Noor University; Iran
| | - S. Ebrahimi
- Department of Basic Sciences; Payame Noor University; Iran
| | - B. Behnam
- Cellular and Molecular Research Center; Tehran University of Medical Sciences; Tehran Iran
- Department of Medical Genetics and Molecular Biology; School of Medicine; Tehran University of Medical Sciences; Tehran Iran
| | - M. Bakhtiyari
- Cellular and Molecular Research Center; Tehran University of Medical Sciences; Tehran Iran
- Department of Anatomical Science; School of Medicine; Tehran University of Medical Sciences; Tehran Iran
| | - M. T. Joghataei
- Cellular and Molecular Research Center; Tehran University of Medical Sciences; Tehran Iran
- Department of Anatomical Science; School of Medicine; Tehran University of Medical Sciences; Tehran Iran
| | - M. Abbasi
- Department of Anatomical Science; School of Medicine; Tehran University of Medical Sciences; Tehran Iran
| | - M. Amini
- Cellular and Molecular Research Center; Tehran University of Medical Sciences; Tehran Iran
| | - S. Amanpour
- Vali-Asr Reproductive Health Research Center; Tehran University of Medical Sciences; Tehran Iran
| | - M. Koruji
- Cellular and Molecular Research Center; Tehran University of Medical Sciences; Tehran Iran
- Department of Anatomical Science; School of Medicine; Tehran University of Medical Sciences; Tehran Iran
| |
Collapse
|
31
|
Ebrahimi S, Abbasnia K, Motealleh A, Kooroshfard N, Kamali F, Ghaffarinezhad F. Effect of lidocaine phonophoresis on sensory blockade: pulsed or continuous mode of therapeutic ultrasound? Physiotherapy 2012; 98:57-63. [DOI: 10.1016/j.physio.2011.01.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2010] [Accepted: 01/16/2011] [Indexed: 10/17/2022]
|
32
|
Ai J, Ebrahimi S, Khoshzaban A, Jafarzadeh Kashi TS, Mehrabani D. Tissue engineering using human mineralized bone xenograft and bone marrow mesenchymal stem cells allograft in healing of tibial fracture of experimental rabbit model. Iran Red Crescent Med J 2012; 14:96-103. [PMID: 22737562 PMCID: PMC3372046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2011] [Accepted: 12/22/2011] [Indexed: 11/16/2022]
Abstract
BACKGROUND Bone healing and its reconstruction in fractures, especially in long bones are of particular importance in regenerative medicine. This study compares the bone healing rate after a human xenograft of mineralized bone and together with an allograft of bone marrow mesenchymal stem cells (MSCs) in an experimental tibial bone fracture rabbit model. METHODS In fall 2009, twenty New Zealand white rabbits were randomly divided into 2 equal groups. In both groups, a 5 mm segmental defect was created in the right tibia. In group A, a scaffold pin was seeded with allogenic rabbit MSCs and was placed in the defect area and in group B, the defect was filled with an unseeded pin human mineralized bone xenograft. An untreated defect was induced in the left tibia of all animals serving as the control. After 4-8 weeks, the segmental defects were histologically evaluated and also by a compressive test. RESULTS In groups A and B, healing and formation of new bony tissue were significantly more than the control group and with a significant less inflammation. CONCLUSION Tissue engineering of mineralized bone xenograft and MSCs allograft may be significant steps in bone healing and regenerative medicine.
Collapse
Affiliation(s)
- J Ai
- Department of Tissue Engineering and Cell Therapy, School of Advanced Medical Technologies, Tehran University of Medical Sciences, Tehran, Iran,Research Center for Science and Technology in Medicine, Tehran University of Medical Sciences, Tehran, Iran,Stem Cell and Transgenic Technology Research Center, Department of Pathology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - S Ebrahimi
- Department of Biology, Faculty of Sciences, University of Tarbiat Moallem, Tehran, Iran
| | - A Khoshzaban
- Research Center and Iranian Bank of graft products, Tehran, Iran
| | - T S Jafarzadeh Kashi
- Department of Dental Materials, Faculty of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - D Mehrabani
- Stem Cell and Transgenic Technology Research Center, Department of Pathology, Shiraz University of Medical Sciences, Shiraz, Iran,Correspondence: Davood Mehrabani, PhD, Assistant Professor of Pathology, Stem Cell and Transgenic Technology Research Center, Shiraz University of Medical Sciences, Mother and Child Hospital, Shiraz, Iran. Tel.: +98-711-2279711, Fax: +98-711-2279711, E-mail:
| |
Collapse
|
33
|
Ashkani-Esfahani S, Imanieh MH, Khoshneviszadeh M, Meshksar A, Noorafshan A, Geramizadeh B, Ebrahimi S, Handjani F, Tanideh N. The healing effect of arnebia euchroma in second degree burn wounds in rat as an animal model. Iran Red Crescent Med J 2012; 14:70-4. [PMID: 22737558 PMCID: PMC3372044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Accepted: 11/14/2011] [Indexed: 11/06/2022]
Abstract
BACKGROUND Finding more efficient agents with fewer side effects for treatment of burns has always been a concern for researchers. Silver sulfadiazine (SSD), apparently due to its antimicrobial effect, is still one of the most common prescribed agents. Previous studies suggested that Arnebia euchroma (AE) has shown antimicrobial and anti-inflammatory activities. This study investigates the healing effect of AE extract in comparison with SSD in second degree burn wounds. METHODS Fort eight female Wistar rats (220±20 g) were divided into four groups. Standard second degree burn wounds were induced on the back of their necks. One group was treated with SSD; two groups were treated with AE cream at concentrations of 10% (AE10) and 20% (AE20) and the control group which received no treatment. The duration of treatment was 28 days. RESULTS This study revealed that AE and SSD noticeably improved re-epithelization, fibroblasts proliferation, and collagen bundle synthesis and had a noticeable anti-inflammatory effect compared with the control group. CONCLUSION Results of the present study revealed that Arnebia euchroma herbal extract was an effective treatment for second degree burn wounds when compared with SSD.
Collapse
Affiliation(s)
- S Ashkani-Esfahani
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M H Imanieh
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M Khoshneviszadeh
- Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - A Meshksar
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - A Noorafshan
- Histomorphometry and Stereology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran,Correspondence: Ali Noorafshan, PhD, Department of Anatomy, Histomorphometry and Stereology Research Centre, Shiraz University of Medical Sciences, Shiraz, Iran. Tel.: +98-917-3397040, +98-917-7170227, Fax: +98-711-6285195, E-mail:
| | - B Geramizadeh
- Organ Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - S Ebrahimi
- Medical Ethics Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - F Handjani
- Department of Dermatology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - N Tanideh
- Stem Cell and Transgenic Technology Research Center, Department of Pharmacology, Shiraz University of Medical Sciences, Shiraz, Iran
| |
Collapse
|
34
|
Affiliation(s)
- S. Ebrahimi
- a Department of Chemistry, Malayer Branch , Islamic Azad University , Malayer, Iran
| | | | - H. Eibagi
- b Department of Chemistry , Arak University , Arak, Iran
| |
Collapse
|
35
|
Ebrahimi S, Esfahani S. PP-031 Treatment of chronic osteomyelitis. Int J Infect Dis 2011. [DOI: 10.1016/s1201-9712(11)60184-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
36
|
Ebrahimi S, Asemani O. PP-163 HIV+ patient: professional approach. Int J Infect Dis 2011. [DOI: 10.1016/s1201-9712(11)60315-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
|
37
|
Mobinikhaledi A, Foroughifar N, Ebrahimi S, Rahimi F, Zandi F. Synthesis of Some Novel 2-Arylidene Thiazoloquinazolinone Derivatives via One-Pot, Three-Component Reaction. PHOSPHORUS SULFUR 2011. [DOI: 10.1080/10426507.2010.503210] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
| | - N. Foroughifar
- a Department of Chemistry , Arak University , Arak , Iran
- b Faculty of Chemistry , Islamic Azad University , North Tehran Branch, North Tehran , Iran
| | - S. Ebrahimi
- c Department of Chemistry , Islamic Azad University , Malayer Branch, Malayer , Iran
| | - F. Rahimi
- a Department of Chemistry , Arak University , Arak , Iran
| | - F. Zandi
- b Faculty of Chemistry , Islamic Azad University , North Tehran Branch, North Tehran , Iran
| |
Collapse
|
38
|
Salehi B, Ebrahimi S, Moradi S. P01-340-Title: comparing of psychiatric co- morbidity disorders in primary school students with adhd subtypes (attention deficit, hyperactivity, combined) in academic year of 2009–2010 in arak-iran. Eur Psychiatry 2011. [DOI: 10.1016/s0924-9338(11)72051-x] [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: 10/18/2022] Open
Abstract
IntroductionADHD is one of the most prevalent psychiatric disorders in children.ObjectiveADHD have co-morbidity with many other psychiatric disorders.AimsAim of this study was Comparing of prevalence of three subtypes of ADHD with psychiatric Co- morbidity in primary school students of Arak-Iran.MethodsThis study was a descriptive analytic, cross- sectional one, which carried on 2000 (960 girls and 1040 boys)primary school students in 1st state of Arak in academic year of 2009–2010, which screened by Intelligence Raiven scale and 48 Canner’s questionnaire (parents and teachers)and if there were existed of any subtypes of ADHD, we have done K-SADS-E questionnaire(Schedule for Affective disorder and Schizophrenia -epidemiological version)for them, then data were analyzed by using descriptive- statistical methods and Logistic- regression for obtaining R. R.Results2.3, 3.5 and 2.7 percent of children have one of the subtypes of ADHD. The findings showed that prevalence of hyperactivity and attention deficit subtypes decreased while combined type increased by increasing age. The prevalence of two subtypes of hyperactivity and attention deficit in boys and girls were not significantly different but combined type was significantly different. Finally, there were differences between ADHD subtypes and Co morbidity of psychiatric disorders such as conduct, depressive,enuresis, tic, schizophrenia, oppositional, obsessive- compulsive, manic and social phobia, but these differences were not significant between girls and boys.ConclusionsPrevalence of subtypes of the ADHD were different between age and gender but there were not significant differences between Co morbidity of ADHD subtypes and psychiatric disorders.
Collapse
|
39
|
Mobinikhaledi A, Foroughifar N, Kalhor M, Ebrahimi S, Fard MAB. Synthesis of Some Symmetrical Novel Bis-thiosemicarbazides, 1,2,4-Triazoles, 1,3,4-Thiadiazoles, and Their Derivatives. PHOSPHORUS SULFUR 2011. [DOI: 10.1080/10426507.2010.480949] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
| | - N. Foroughifar
- a Department of Chemistry , Arak University , Arak, Iran
| | - M. Kalhor
- a Department of Chemistry , Arak University , Arak, Iran
| | - S. Ebrahimi
- a Department of Chemistry , Arak University , Arak, Iran
| | | |
Collapse
|
40
|
Sarkari B, Hatam GR, Mikaeili F, Sadeghi H, Ebrahimi S. A comparative study of antigen and antibody detection in visceral leishmaniasis using serum and urine-based ELISA. Trop Biomed 2008; 25:96-99. [PMID: 18948879] [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] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
An antigen-based ELISA system was evaluated for diagnosis of visceral leishmaniasis (VL). Urine samples from confirmed VL cases were tested by the system in comparison with urine samples from patients with non-VL infectious disease and patients with non-infectious diseases. Antigen was detected in urine of 21 out of 35 (60%) of VL cases. No cross reaction was found with samples from healthy individuals except in 3 samples from non-VL infectious diseases. Two samples from cutaneous leishmaniasis patient and one from patient with toxoplasmosis. The results obtained with the antigen-based ELISA were compared to those obtained with direct agglutination test (DAT), an antibody-based ELISA and indirect immunofluorescent antibody (IFA) revealed that the antigen-based ELISA is comparable in terms of specificity (91.2%; 95% CI=75.2-97.7%) but with a lower sensitivity (60%; 95% CI=42.2-75.6%). These results suggest that the antigen detection in urine by the noninvasive antigen-based ELISA system might offer a useful method for diagnosis of VL.
Collapse
Affiliation(s)
- B Sarkari
- Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
| | | | | | | | | |
Collapse
|
41
|
Ebrahimi S, Iran Nejad H, Shirani Rad AH, Abbas Akbari G, Amiry R, Modarres Sanavy SAM. Effect of Azotobacter chroococcum application on quantity and quality forage of rapeseed cultivars. Pak J Biol Sci 2007; 10:3126-30. [PMID: 19090110 DOI: 10.3923/pjbs.2007.3126.3130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The study was conducted to determine the effect of Azotobacter chroococcum (Azotobacter) application on quality and quantity forage of the rapeseed cultivars (RGS 003, Hyolla 401 and Hyolla 330) and the possibility of cultivation the rapeseed forage in summer. The experimental design was spilt plot laid out in randomized complete block with three replications. Different levels of Azotobacter (zero and one kg hal) and cultivars were randomized to main plot and sub plot units, respectively. Results showed that Azotobacter significantly affected on all quantity traits except plant height. There were significant differences among cultivars for dry matter, biomass, sub branch number, plant height and forage glucosinolate concentration. Therefore Azotobacter can be considered as growth promoting for rapeseed in the future studies. Also, RGS003 cultivar was better than other cultivars when Azotobacter was applied.
Collapse
Affiliation(s)
- S Ebrahimi
- Abourayhan Campus, University of Tehran, Tehran, Iran
| | | | | | | | | | | |
Collapse
|
42
|
Ebrahimi S, Picioreanu C, Xavier J, Kleerebezem R, Kreutzer M, Kapteijn F, Moulijn J, van Loosdrecht M. Biofilm growth pattern in honeycomb monolith packings: Effect of shear rate and substrate transport limitations. Catal Today 2005. [DOI: 10.1016/j.cattod.2005.06.051] [Citation(s) in RCA: 17] [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: 10/25/2022]
|
43
|
|
44
|
Ebrahimi S, Faghihi M, Keshavarz M, Kadkhodaee M, Mirershadi F, Asadi B. Anti-infarct effect of magnesium is not mediated by adenosine A1 receptors in rat globally ischaemic isolated hearts. Clin Exp Pharmacol Physiol 2005; 31:868-72. [PMID: 15659051 DOI: 10.1111/j.1440-1681.2004.04128.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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: 11/30/2022]
Abstract
1. The aim of present study was to investigate the effects of magnesium (Mg) on cardiac function and infarct size and to compare it effects with those of adenosine. The mechanism of Mg-mediated cardioprotection was explored by combined use of Mg and a selective adenosine A(1) receptor antagonist. 2. Rat isolated hearts were used for Langendorff perfusion. Hearts were either non-preconditioned or preconditioned with Mg (6 mmol/L) or adenosine (1 mmol/L) before 30 min sustained ischaemia followed by 120 min reperfusion. Within each of these protocols, hearts were divided into two groups; one group was exposed to the A(1) receptor antagonist 8-cyclopentyl-1,3-dipropylxanthine (DPCPX; 200 nmol/L). Infarct size was measured by the triphenyltetrazolium chloride method. Left ventricular function was assessed by left ventricular developed pressure (LVDP), the product of heart rate x LVDP and coronary flow (CF). 3. The administration of Mg had an anti-infarct effect independent of its effect on postischaemic functional recovery in rats. Both Mg and adenosine equipotently reduced infarct size, but this effect of Mg was not blocked by the simultaneous administration of DPCPX. Cardiac function was improved by both adenosine and Mg and blockade of adenosine A(1) receptors attenuated these effects for both agents. 4. In conclusion, the results of the present study indicate that stimulation of adenosine A(1) receptors is not responsible for the anti-infarct effect of Mg in ischaemic myocardium in rats, but that the Mg-mediated protection of postischaemic functional recovery in rats is mediated by these receptors.
Collapse
Affiliation(s)
- S Ebrahimi
- Department of Physiology, Faculty of Medicine, Tehran Medical Sciences University, Tehran, Iran
| | | | | | | | | | | |
Collapse
|
45
|
Ebrahimi S, Fernández Morales FJ, Kleerebezem R, Heijnen JJ, van Loosdrecht MCM. High-rate acidophilic ferrous iron oxidation in a biofilm airlift reactor and the role of the carrier material. Biotechnol Bioeng 2005; 90:462-72. [PMID: 15772947 DOI: 10.1002/bit.20448] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [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: 11/09/2022]
Abstract
In this study, the feasibility and engineering aspects of acidophilic ferrous iron oxidation in a continuous biofilm airlift reactor inoculated with a mixed culture of Acidithiobacillus ferrooxidans and Leptospirillum ferrooxidans bacteria were investigated. Specific attention was paid to biofilm formation, competition between both types of bacteria, ferrous iron oxidation rate, and gas liquid mass transfer limitations. The reactor was operated at a constant temperature of 30 degrees C and at pH values of 0-1.8. Startup of the reactor was performed with basalt carrier material. During the experiments the basalt was slowly removed and the ferric iron precipitates formed served as a biofilm carrier. These precipitates have highly suitable characteristics as a carrier material for the immobilization of ferrous iron-oxidizing bacteria and dense conglomerates were observed. Lowering the pH (0.6-1) resulted in dissolution of the ferric precipitates and induced granular sludge formation. The maximum ferrous iron oxidation rate achieved in this study was about 145 molFe(2+)/m(3).h at a hydraulic residence time of 0.25 h. Optimal treatment performance was obtained at a loading rate of 100 mol/m(3).h at a conversion efficiency as high as 98%. Fluorescent in situ hybridization (FISH) studies showed that when the reactor was operated at high ferrous iron conversion (>85%) for 1 month, the desirable L. ferrooxidans species could out-compete A. ferrooxidans due to the low Fe(2+) and high Fe(3+) concentrations.
Collapse
Affiliation(s)
- S Ebrahimi
- Department of Biotechnology, Delft University of Technology, Julianalaan 67, 2628 BC Delft, The Netherlands.
| | | | | | | | | |
Collapse
|
46
|
|
47
|
Kazemi F, Kiasat AR, Ebrahimi S. LiBF4: A Mild and Efficient Catalyst for Conversion of Oxiranes to Thiiranes with Thiourea. SYNTHETIC COMMUN 2003. [DOI: 10.1081/scc-120015813] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
48
|
|
49
|
Kazemi F, Kiasat AR, Ebrahimi S. LiBF4: A MILD AND EFFICIENT CATALYST FOR THE TETRAHYDROPYRANYLATION OF ALCOHOLS AND THEIR DETETRAHYDROPYRANYLATION. SYNTHETIC COMMUN 2002. [DOI: 10.1081/scc-120003397] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
50
|
Abstract
Murine Sipa-1 (signal-induced proliferation associated protein) is a mitogen induced GTPase activating protein (GAP). While mapping candidate genes for multiple endocrine neoplasia type 1 (MEN1) at 11q13, we cloned the human homologue of Sipa-1. Herein, we report the complete cDNA sequence, expression, and genomic organization of SIPA-1. SIPA-1 consists of 16 exons with highly conserved exon-intron boundaries. The predicted SIPA-1 protein is highly homologous to the mouse protein, particularly in the region of the GAP-related domain at the amino terminus and the leucine zipper at the carboxy terminus. It is widely expressed, including in fetal tissues, but is most highly expressed in lymphoid organs. During the course of cloning SIPA-1, the MEN1 gene was identified, thus excluding human SIPA-1 as a candidate for this disease.
Collapse
Affiliation(s)
- S Ebrahimi
- UCLA School of Medicine, West Los Angeles VA Medical Center Department of Surgery Core Molecular Biology Unit, 10833 Le, Conte Ave. 72-215 CHS, Los Angeles, CA 90095-6904, USA
| | | | | | | | | | | | | |
Collapse
|