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Majidi M, Pakzad S, Salimi M, Azadbakht A, Hajighasemlou S, Amoupour M, Nokhbedehghan Z, Bonakdar S, Sineh Sepehr K, Pal Singh Chauhan N, Gholipourmalekabadi M. Macrophage cell morphology-imprinted substrates can modulate mesenchymal stem cell behaviors and macrophage M1/M2 polarization for wound healing applications. Biotechnol Bioeng 2023; 120:3638-3654. [PMID: 37668186 DOI: 10.1002/bit.28546] [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: 03/15/2023] [Revised: 08/09/2023] [Accepted: 08/24/2023] [Indexed: 09/06/2023]
Abstract
Mesenchymal stem cells and macrophages (MQ) are two very important cells involved in the normal wound healing process. It is well understood that topological cues and mechanical factors can lead to different responses in stem cells and MQ by influencing their shape, cytoskeleton proliferation, migration, and differentiation, which play an essential role in the success or failure of biomaterial implantation and more importantly wound healing. On the other hand, the polarization of MQ from proinflammatory (M1) to prohealing (M2) phenotypes has a critical role in the acceleration of wound healing. In this study, the morphology of different MQ subtypes (M0, M1, and M2) was imprinted on a silicon surface (polydimethylsiloxane [PDMS]) to prepare a nano-topography cell-imprinted substrate with the ability to induce anti-inflammatory effects on the mouse adipose-derived stem cells (ADSCs) and RAW264.7 monocyte cell line (MO). The gene expression profiles and flow cytometry of MQ revealed that the cell shape microstructure promoted the MQ phenotypes according to the specific shape of each pattern. The ELISA results were in agreement with the gene expression profiles. The ADSCs on the patterned PDMS exhibited remarkably different shapes from no-patterned PDMS. The MOs grown on M2 morphological patterns showed a significant increase in expression and section of anti-inflammatory cytokine compared with M0 and M1 patterns. The ADSCs homing in niches heavily deformed the cytoskeletal, which is probably why the gene expression and phenotype unexpectedly changed. In conclusion, wound dressings with M2 cell morphology-induced surfaces are suggested as excellent anti-inflammatory and antiscarring dressings.
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Affiliation(s)
- Mohammad Majidi
- Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Saeedreza Pakzad
- Food and Drug Laboratory Research Center, Food and Drug Administration, Iran Ministry of Health and Medical Education, Tehran, Iran
| | - Maryam Salimi
- Hematopoietic Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abdolnaser Azadbakht
- Department of Biomedical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran
- Stem Cell Research Center, Tissue Engineering and Regenerative Medicine Institute, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Saieh Hajighasemlou
- Food and Drug Administration, Iran Ministry of Health and Medical Education, Tehran, Iran
| | - Moein Amoupour
- Department of Medical Biotechnology, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Zeinab Nokhbedehghan
- Department of Medical Biotechnology, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | | | - Koushan Sineh Sepehr
- Laboratory Sciences Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | | | - Mazaher Gholipourmalekabadi
- Department of Medical Biotechnology, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
- Cellular and Molecular Research Centre, Iran University of Medical Sciences, Tehran, Iran
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2
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Azadbakht A, Alizadeh S, Aliakbar Ahovan Z, Khosrowpour Z, Majidi M, Pakzad S, Shojaei S, Chauhan NPS, Jafari M, Gholipourmalekabadi M. Chitosan-Placental ECM Composite Thermos-Responsive Hydrogel as a Biomimetic Wound Dressing with Angiogenic Property. Macromol Biosci 2023; 23:e2200386. [PMID: 36398565 DOI: 10.1002/mabi.202200386] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/29/2022] [Indexed: 11/19/2022]
Abstract
Attempts are being made to develop an ideal wound dressing with excellent biomechanical and biological properties. Here, a thermos-responsive hydrogel is fabricated using chitosan (CTS) with various concentrations (1%, 2.5%, and 5% w/v) of solubilized placental extracellular matrix (ECM) and 20% β-glycerophosphate to optimize a smart wound dressing hydrogel with improved biological behavior. The thermo-responsive CTS (TCTS) alone or loaded with ECMs (ECM-TCTS) demonstrate uniform morphology using SEM. TCTS and ECM1%-TCTS and ECM2.5%-TCTS show a gelation time of 5 min at 37 °C, while no gel formation is observed at 4 and 25 °C. ECM5%-TCTS forms gel at both 25 and 37 °C. The degradation and swelling ratios increase as the ECM content of the hydrogel increase. All the constructs show excellent biocompatibility in vitro and in vivo, however, the hydrogels with a higher concentration of ECM demonstrate better cell adhesion for fibroblast cells and induce expression of angiogenic factors (VEGF and VEGFR) from HUVEC. Only the ECM5%-TCTS has antibacterial activity against Acinetobacter baumannii ATCC 19606. The data obtained from the current study suggest the ECM2.5%-TCTS as an optimized smart biomimetic wound dressing with improved angiogenic properties now promises to proceed with pre-clinical and clinical investigations.
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Affiliation(s)
- Abdolnaser Azadbakht
- Department of Biomedical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, 1468763785, Iran
| | - Sanaz Alizadeh
- Cellular and Molecular Research Centre, Iran University of Medical Sciences, Tehran, 1449614535, Iran.,Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, 1449614535, Iran
| | - Zahra Aliakbar Ahovan
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, 1985717443, Iran
| | - Zahra Khosrowpour
- Cellular and Molecular Research Centre, Iran University of Medical Sciences, Tehran, 1449614535, Iran.,Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, 1449614535, Iran
| | - Mohammad Majidi
- Cellular and Molecular Research Centre, Iran University of Medical Sciences, Tehran, 1449614535, Iran.,Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, 1449614535, Iran
| | - Saeedreza Pakzad
- Food and Drug Laboratory Research Center, Food and Drug Administration, Iran Ministry of Health and Medical Education, Tehran, 1113615911, Iran
| | - Shahrokh Shojaei
- Department of Biomedical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, 1468763785, Iran.,Stem cells Research Center, Tissue Engineering and Regenerative Medicine Institute, Central Tehran Branch, Islamic Azad University, Tehran, 1468763785, Iran
| | - Narendra Pal Singh Chauhan
- Department of Chemistry, Faculty of Science, Bhupal Nobles' University, Udaipur, Rajasthan, 313002, India
| | - Marzieh Jafari
- Food and Drug Administration, Iran Ministry of Health and Medical Education, Tehran, 1113615911, Iran
| | - Mazaher Gholipourmalekabadi
- Cellular and Molecular Research Centre, Iran University of Medical Sciences, Tehran, 1449614535, Iran.,Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, 1449614535, Iran.,Department of Medical Biotechnology, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, 1449614535, Iran
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3
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Roshandel E, Mehravar M, Nikoonezhad M, Alizadeh AM, Majidi M, Salimi M, Hajifathali A. Cell-Based Therapy Approaches in Treatment of Non-obstructive Azoospermia. Reprod Sci 2022; 30:1482-1494. [PMID: 36380137 PMCID: PMC9666961 DOI: 10.1007/s43032-022-01115-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 10/20/2022] [Indexed: 11/16/2022]
Abstract
The rate of infertility has globally increased in recent years for a variety of reasons. One of the main causes of infertility in men is azoospermia that is defined by the absence of sperm in the ejaculate and classified into two categories: obstructive azoospermia and non-obstructive azoospermia. In non-obstructive azoospermia, genital ducts are not obstructed, but the testicles do not produce sperm at all, due to various reasons. Non-obstructive azoospermia in most cases has no therapeutic options other than assisted reproductive techniques, which in most cases require sperm donors. Here we discuss cell-based therapy approaches to restore fertility in men with non-obstructive azoospermia including cell-based therapies of non-obstructive azoospermia using regenerative medicine and cell-based therapies of non-obstructive azoospermia by paracrine and anti-inflammatory pathway, technical and ethical challenges for using different cell sources and alternative options will be described, and then the more effectual approaches will be mentioned as future trends.
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Affiliation(s)
- Elham Roshandel
- Hematopoietic Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, P.O. Box: 1985711151, Tehran, Iran
| | - Maryam Mehravar
- Hematopoietic Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, P.O. Box: 1985711151, Tehran, Iran
| | - Maryam Nikoonezhad
- Hematopoietic Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, P.O. Box: 1985711151, Tehran, Iran
| | - Afshin Mohammad Alizadeh
- Department of Internal Medicine, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Majidi
- Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Maryam Salimi
- Hematopoietic Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, P.O. Box: 1985711151, Tehran, Iran
| | - Abbas Hajifathali
- Hematopoietic Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, P.O. Box: 1985711151, Tehran, Iran
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Soltanpour S, Tarinejad A, Hasanpur K, Majidi M. A meta-analysis of microarray data revealed hub genes and transcription factors involved in drought stress response in rice ( Oryza sativa L.). Funct Plant Biol 2022; 49:898-916. [PMID: 35798354 DOI: 10.1071/fp22028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 06/21/2022] [Indexed: 06/15/2023]
Abstract
Although there are various studies attempted to clarify the genetic mechanism of plant response to drought stress that reduces crop yield, a meta-analysis can integrate the results of them to provide a better picture of the issue. Therefore, in this study, several microarray datasets of rice were meta-analysed under drought stress and normal condition using the R packages. Accordingly, differentially expressed genes (meta-DEGs) were identified. The results showed 643 and 677 upregulated and downregulated genes, respectively. The significant common Gene Ontology (GO) terms between the up- and downregulated genes were responses to abiotic stimulus , water deprivation , oxygen-containing compound and abscisic acid . The transcription factors (TF) survey showed that bHLH under drought stress activates up genes 42% more than down genes while bzip Homeodomain activates down genes 54% more than up genes. The hub downregulated genes obtained from this study were mainly related to photosynthesis and the hub upregulated genes were mainly related to stress tolerance which include heat shock proteins (HSPs), late embryogenesis abundant (LEAs), calmodulin-like protein (CML), phosphatase 2C (PP2Cs) and IAA genes. Moreover, this meta-analysis data were compared with other experimental data and the results confirmed the up and down expression of them. Our findings can provide novel insights into the molecular mechanism of rice (Oryza sativa L.) response to drought stress.
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Affiliation(s)
- Sedigheh Soltanpour
- Department of Agricultural Biotechnology, Faculty of Agriculture, Azarbaijan Shahid Madani University, Tabriz, Iran
| | - AliReza Tarinejad
- Department of Agricultural Biotechnology, Faculty of Agriculture, Azarbaijan Shahid Madani University, Tabriz, Iran
| | - Karim Hasanpur
- Department of Animal Science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
| | - Mohammad Majidi
- Department of Animal Science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
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5
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Panahi B, Majidi M, Hejazi MA. Genome Mining Approach Reveals the Occurrence and Diversity Pattern of Clustered Regularly Interspaced Short Palindromic Repeats/CRISPR-Associated Systems in Lactobacillus brevis Strains. Front Microbiol 2022; 13:911706. [PMID: 35722276 PMCID: PMC9204096 DOI: 10.3389/fmicb.2022.911706] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Accepted: 05/17/2022] [Indexed: 12/04/2022] Open
Abstract
Clustered regularly interspaced short palindromic repeats (CRISPR) together with their CRISPR-associated (Cas) genes are widely distributed in prokaryotes that provide an adaptive defense mechanism against foreign invasive DNA. There is relatively little knowledge about the CRISPR-Cas diversity and evolution in Lactobacillus brevis strains. Therefore, in this study, a genome-mining approach was employed to investigate the diversity and occurrence of the CRISPR-Cas system in 83 L. brevis strains. Moreover, trans-activating CRISPR RNA (tracrRNA) and protospacer adjacent motif (PAM) as pivotal elements for the successful targeting and inference of phages by the subtype II CRISPR-Cas systems were surveyed. Finally, evolutionary paths of L. brevis strains under selective pressure from foreign invasive DNA such as plasmids and phages of studied strains were surveyed using acquisition and deletion events analysis of spacers. A total of 127 confirmed CRISPRs were identified, which were distributed in 69 strains. Among strains with confirmed CRISPRs, 35 strains only contained one CRISPR locus, 23 strains contained two CRISPR loci, and 12 strains contained three to six CRISPR loci. L. brevis strains frequently harbor more than one CRISPR system. Analysis of confirmed CRISPR arrays showed that 31 out of 127 confirmed CRISPRs included Cas genes which were categorized as one of the II-A, II-C, and I-E subtypes. Analysis of subtype II-A spacers reflected divergent evolution for 18 strains into 16 unique groups. Additional analysis of spacer sequences also confirmed the implication of characterizing CRISPR-Cas systems in targeting of phages and plasmids. The current study highlighted the potential of utilizing CRISPR spacer polymorphism in genotyping lactobacillus strains. Moreover, it provides deep insights into the occurrence, diversity, and functional impacts of the CRISPR-Cas system in L. brevis strains.
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Affiliation(s)
- Bahman Panahi
- Department of Genomics, Branch for Northwest and West Region, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research, Education and Extension Organization (AREEO), Tabriz, Iran
- *Correspondence: Bahman Panahi,
| | - Mohammad Majidi
- Department of Biotechnology, Faculty of Agriculture, Azarbaijan Shahid Madani University, Tabriz, Iran
| | - Mohammad Amin Hejazi
- Department of Food Biotechnoology, Branch for Northwest and West Region, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research, Education and Extension Organization (AREEO), Tabriz, Iran
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Taghizadehjahed M, Sepahdar A, Rabiee N, Nazbar A, Farzad-Mohajeri S, Dehghan MM, Shokrgozar MA, Majidi M, Mardjanmehr SH, Aminianfar H, Akbari Javar H, Bonakdar S. Comparison of engineered cartilage based on BMSCs and chondrocytes seeded on PVA-PPU scaffold in a sheep model. J Biomed Mater Res B Appl Biomater 2022; 110:2411-2421. [PMID: 35587251 DOI: 10.1002/jbm.b.35087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 04/26/2022] [Accepted: 04/30/2022] [Indexed: 11/11/2022]
Abstract
In this study, polyvinyl alcohol hydrogel chains were crosslinked by polyurethane in order to synthesize a suitable substrate for cartilage lesions. The substrate was fully characterized, and in vitro and in vivo investigations were conducted based on a sheep model. In vitro tests were performed based on the chondrocyte cells with the Alcian Blue and safranin O staining in order to prove the presence of proteoglycan on the surface of the synthesized substrate, which has been secreted by cultures of chondrocytes. Furthermore, the expression of collagen type I, collagen type II, aggrecan, and Sox9 was presented in the chondrocyte cultures on the synthesized substrate through RT-PCR. In addition, the H&E analysis and other related tests demonstrated the formation of neocartilage tissue in a sheep model. The results were found to be promising for cartilage tissue engineering and verified that the isolated chondrocyte cultures on the synthesized substrate retain their original composition.
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Affiliation(s)
- Masoud Taghizadehjahed
- Department of Surgery and Radiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Asma Sepahdar
- Department of Pharmaceutical Biomaterials, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Navid Rabiee
- Department of Physics, Sharif University of Technology, Tehran, Iran.,National Cell Bank Department, Pasteur Institute of Iran, Tehran, Iran.,School of Engineering, Macquarie University, Sydney, New South Wales, Australia
| | - Abolfazl Nazbar
- National Cell Bank Department, Pasteur Institute of Iran, Tehran, Iran
| | - Saeed Farzad-Mohajeri
- Department of Surgery and Radiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.,Institute of Biomedical Research, University of Tehran, Tehran, Iran
| | - Mohammad Mehdi Dehghan
- Department of Surgery and Radiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.,Institute of Biomedical Research, University of Tehran, Tehran, Iran
| | | | - Mohammad Majidi
- National Cell Bank Department, Pasteur Institute of Iran, Tehran, Iran.,Department of Tissue Engineering and Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | | | | | - Hamid Akbari Javar
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Shahin Bonakdar
- National Cell Bank Department, Pasteur Institute of Iran, Tehran, Iran
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Balarastaghi S, Delirrad M, Jafari A, Majidi M, Sadeghi M, Zare-Zardini H, Karimi G, Ghorani-Azam A. Potential benefits versus hazards of herbal therapy during pregnancy; a systematic review of available literature. Phytother Res 2022; 36:824-841. [PMID: 35023227 DOI: 10.1002/ptr.7363] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 04/25/2021] [Revised: 11/03/2021] [Accepted: 12/10/2021] [Indexed: 11/07/2022]
Abstract
The use of herbal medicine has considerably grown worldwide in the past two decades. Studies have shown that the prevalence of herbal diet therapy in pregnancy ranged from 1% to 60% in different societies. Many clinical reports have shown that some herbal medicines may have toxic effects on pregnant women and their fetuses because active ingredients of some medicinal plants can readily pass through the biological barriers (e.g., placental barrier). In the present study, we aimed to systematically review the literature to discover potential benefits versus the hazards of herbal therapy during pregnancy. For this purpose, a comprehensive literature review was performed, and after the literature search and selection of the appropriate documents, the desired data were extracted and reported. From 35 articles with a total of 39,950 study population, the results showed that some medicinal plants could cause severe toxicity on mothers and fetuses, in addition to abortion during pregnancy. It was also shown that some plants may lead to developmental abnormalities or fetal death. Findings of this survey showed that some herbal medicines have toxic, teratogenic, and abortive potential, particularly in the first trimester of pregnancy because active ingredients of some medicinal plants are able to pass through the placental barrier and reach the fetus.
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Affiliation(s)
- Soudabeh Balarastaghi
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Delirrad
- Department of Forensic Medicine and Toxicology, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Abbas Jafari
- Department of Clinical Toxicology, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
- Cellular and Molecular Research Center, Research Institute on Cellular and Molecular Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Mohammad Majidi
- Department of Forensic Medicine and Toxicology, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Mahmood Sadeghi
- Medical Toxicology and Drug Abuse Research Center (MTDRC), Birjand University of Medical Sciences, Birjand, Iran
| | - Hadi Zare-Zardini
- Hematology and Oncology Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
- Department of Sciences, Farhangian University, Isfahan, Iran
| | - Gholamreza Karimi
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Adel Ghorani-Azam
- Department of Forensic Medicine and Toxicology, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
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Sadeghi B, Roshandel E, Pirsalehi A, Kazemi S, Sankanian G, Majidi M, Salimi M, Aghdami N, Sadrosadat H, Samadi Kochaksaraei S, Alaeddini F, Ringden O, Hajifathali A. Conquering the cytokine storm in COVID-19-induced ARDS using placenta-derived decidua stromal cells. J Cell Mol Med 2021; 25:10554-10564. [PMID: 34632708 PMCID: PMC8581334 DOI: 10.1111/jcmm.16986] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/23/2021] [Accepted: 09/24/2021] [Indexed: 01/08/2023] Open
Abstract
Acute respiratory distress syndrome (ARDS) is the most common cause of death in COVID‐19 patients. The cytokine storm is the main driver of the severity and magnitude of ARDS. Placenta‐derived decidua stromal cells (DSCs) have a stronger immunosuppressive effect than other sources of mesenchymal stromal cells. Safety and efficacy study included 10 patients with a median age of 50 (range 14–68) years with COVID‐19‐induced ARDS. DSCs were administered 1–2 times at a dose of 1 × 106/kg. End points were safety and efficacy by survival, oxygenation and effects on levels of cytokines. Oxygenation levels increased from a median of 80.5% (range 69–88) to 95% (range 78–99) (p = 0.012), and pulmonary infiltrates disappeared in all patients. Levels of IL‐6 decreased from a median of 69.3 (range 35.0–253.4) to 11 (range 4.0–38.3) pg/ml (p = 0.018), and CRP decreased from 69 (range 5–169) to 6 (range 2–31) mg/ml (p = 0.028). Two patients died, one of a myocardial infarction and the other of multiple organ failure, diagnosed before the DSC therapy. The other patients recovered and left the intensive care unit (ICU) within a median of 6 (range 3–12) days. DSC therapy is safe and capable of improving oxygenation, decreasing inflammatory cytokine level and clearing pulmonary infiltrates in patients with COVID‐19.
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Affiliation(s)
- Behnam Sadeghi
- Translational Cell Therapy Research (TCR), Department of Clinical Science, Intervention and Technology, CLINTEC, Karolinska Institutet, Huddinge, Sweden
| | - Elham Roshandel
- Hematopoietic Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ali Pirsalehi
- Department of Internal Medicine, School of Medicine, Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sepide Kazemi
- Translational Cell Therapy Research (TCR), Department of Clinical Science, Intervention and Technology, CLINTEC, Karolinska Institutet, Huddinge, Sweden.,Advanced Therapy Medicinal Product (ATMP), Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Ghazaleh Sankanian
- Hematopoietic Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Majidi
- Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Maryam Salimi
- Hematopoietic Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nasser Aghdami
- Department of Regenerative Medicine, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran.,Department of Infectious Diseases and Tropical Medicines, Tehran University of Medical Sciences, Tehran, Iran
| | - Hoda Sadrosadat
- Advanced Therapy Medicinal Product (ATMP), Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Sarvenaz Samadi Kochaksaraei
- Translational Cell Therapy Research (TCR), Department of Clinical Science, Intervention and Technology, CLINTEC, Karolinska Institutet, Huddinge, Sweden.,Advanced Therapy Medicinal Product (ATMP), Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Farshid Alaeddini
- Research Center for Health Management in Mass Gathering, Red Crescent Society of the Islamic Republic of Iran, Tehran, Iran
| | - Olle Ringden
- Translational Cell Therapy Research (TCR), Department of Clinical Science, Intervention and Technology, CLINTEC, Karolinska Institutet, Huddinge, Sweden
| | - Abbas Hajifathali
- Hematopoietic Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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9
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Majidi M. Therapeutic Strategies in Managing Acute Paraquat Poisoning: A Review Study. IJMTFM 2021. [DOI: 10.32598/ijmtfm.v11i3.33633] [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] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background: Paraquat is an extremely toxic herbicide that causes such severe adverse effects as acute lung injury, pulmonary fibrosis, metabolic acidosis, cardiogenic shock, acute renal failure, and even death. Regarding the high prevalence and mortality rate without a specific antidote in paraquat poisoning, we explored managing acute paraquat poisoning. Methods: In this study, required articles were searched using the following keywords: “paraquat poisoning” and “treatment” on an electronic database, such as Pubmed and Google Scholar from January 2013 to December 2020. Results: This article examined pharmacokinetic, clinical, and laboratory findings, complications, diagnosis, prognostic factors, and the treatment of paraquat poisoning. Then, the medical management and therapeutic procedures of paraquat poisoning were discussed. Conclusion: Although there exists no antidote for paraquat poisoning, numerous therapeutic methods have been suggested for treating paraquat poisoning. However, their efficacy remains undiscovered. An interesting finding in one study indicating that endotracheal intubation is an inappropriate procedure for managing paraquat poisoning; further studies are required in this regard. For these reasons, preventing poisoning and using other herbicides with less toxicity than paraquat are recommended.
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10
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Salimi M, Shirazi A, Sineh Sepehr K, Norouzian M, Ebrahimi V, Mehravar M, Majidi M, Mehrazar MM. The effect of CRISPR constructs microinjection on the expression of developmental genes in Rag1 knocked-out mice embryo. Vet Med Sci 2021; 7:1436-1442. [PMID: 33955691 PMCID: PMC8294373 DOI: 10.1002/vms3.380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/31/2020] [Accepted: 09/28/2020] [Indexed: 01/27/2023] Open
Abstract
Despite all the advances in the production of transgenic mice, the production efficiency of these animal models is still low. Given that the expression of developmental genes has a critical role in growth and development of embryo, we determined the expression pattern of pluripotency, trophectoderm and imprinting genes in the Rag1 (recombination-activating gene 1) knocked-out blastocysts resulting from microinjection of CRISPR/Cas9 (clustered regularly interspaced short palindromic repeats/CRISPR-associated protein 9) constructs into the zygote cytoplasm of C57bl6 mice. Following microinjection, the embryos were cultured and the gene expression of developed blastocysts and natural blastocysts (Sham and control groups) were evaluated using real-time PCR. The agarose gel to confirm the deletion in the Rag1 gene in Rag1 knocked-out blastocyst. Our results showed that the expression of trophectoderm genes (-TEAD-4 and Cdx2), pluripotency genes (Nanog and Oct-4) and imprinting gene (H19) in the Rag1 knocked-out group was significantly lower compared with the embryos obtained from Natural fertilization. According to these findings, manipulation, embryo culture and microinjection of CRISPR constructs into the zygote cytoplasm of mice led to reduced expression of imprinting, pluripotency and trophectoderm genes. Therefore, the Rag1 knocked-out embryos produced by the CRISPR/Cas9 system are of low quality, which reduces the chances of live birth in these animals and may cause various abnormalities in fetuses.
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Affiliation(s)
- Maryam Salimi
- Department of Biology and Anatomical SciencesFaculty of MedicineShahid Beheshti University of Medical SciencesTehranIran
| | - Abolfazl Shirazi
- Reproductive Biotechnology Research CenterAvicenna Research InstituteACECRTehranIran
- Department of Gametes and CloningResearch Institute of Animal Embryo TechnologyShahrekord UniversityShahrekordIran
| | - Koushan Sineh Sepehr
- Laboratory Sciences Research CenterGolestan University of Medical SciencesGorganIran
| | - Mohsen Norouzian
- Department of Biology and Anatomical SciencesFaculty of MedicineShahid Beheshti University of Medical SciencesTehranIran
| | - Vahid Ebrahimi
- Department of Anatomy and Cell BiologySchool of MedicineMashhad University of Medical SciencesMashhadIran
| | - Maryam Mehravar
- Department of Gametes and CloningResearch Institute of Animal Embryo TechnologyShahrekord UniversityShahrekordIran
| | - Mohammad Majidi
- Department of Tissue Engineering & Regenerative MedicineFaculty of Advanced Technologies in MedicineIran University of Medical SciencesTehranIran
| | - Mohammad M. Mehrazar
- Department of Gametes and CloningResearch Institute of Animal Embryo TechnologyShahrekord UniversityShahrekordIran
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Majidi M, Jamalpour M, Nekoueifard S. The Prognostic Factors of Aluminum Phosphide Poisoning in Urmia: A-five-years Cross-sectional Study. IJMTFM 2021. [DOI: 10.32598/ijmtfm.v11i2.32663] [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] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background: Aluminum phosphide is a highly toxic fungicide. It causes such severe adverse effects as cardiac arrhythmias, metabolic acidosis, acute renal failure, shock, and even death. Therefore, this study investigated the prognostic factors of aluminum phosphide poisoning. Methods: In this cross-sectional study, all hospitalized patients due to aluminum phosphide poisoning admitted to the poisoning center at Taleghani Hospital, Urmia City, Iran, from 2015 to 2019 were evaluated. The demographics characteristics, clinical findings, and laboratory profiles were retrospectively studied by an investigator-made checklist and evaluated concerning the explored patients’ treatment outcomes. Then, the obtained data were analyzed by descriptive and analytical statistics using SPSS V. 16. Results: The present study investigated 134 patients (96 males & 38 females). The mortality rate was equal to 29.8% (22.4% males & 7.4% females) in the study patients. The research patients’ Mean±SD age was 28.6±11.5) years. The Mean±SD ingestion amount of aluminum phosphide was 1.48±1.06 g (min=0.2 g, max=15 g). Nausea and vomiting with 119 (88.8%), hypotension: 89 (66.4%), vertigo: 80 (59.7%), and sinus tachycardia: 74 (55.2%) were the most signs and symptoms in the study patients, respectively. Statistically significant relationships (P<0.05) were found between the patients’ treatment outcomes and white blood cells, direct bilirubin, Hco3, base excess, magnesium, Aspartate Aminotransferase, Alanine Aminotransferase, Blood Urea Nitrogen, creatinine, blood glucose, pH, prothrombin time, and the international normalized ratio. Furthermore, significant relationships were detected between the patients’ treatment outcomes and leukocytosis, hypokalemia, hyperglycemia, and hypoglycemia (P<0.05). Conclusion: Such prognostic factors as demographics characteristics, clinical findings, laboratory profiles, and electrolytes could be used as good indices of the severity of toxicity in patients; accordingly, such data are beneficial for the proper management of patients by healthcare providers. Therefore, prognostic factors should be considered in the diagnosis, treatment, and follow-up stages for these patients.
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12
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Majidi M, Heidarnejad F, Naseri M, Bonakdar S, Salimi M, Yaraee R. Marham-Mafasel decrease joint inflammation and IL-1β gene expression in rheumatoid arthritis animal model. Vet Med Sci 2021; 7:1417-1425. [PMID: 33939304 PMCID: PMC8294378 DOI: 10.1002/vms3.430] [Citation(s) in RCA: 5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 12/04/2020] [Accepted: 01/04/2021] [Indexed: 12/25/2022] Open
Abstract
Background Rheumatoid arthritis (RA) is a systemic chronic disease with synovial membrane, tendon and articular tissue inflammation. Current treatments of RA have many side effects and are quite expensive. Today, new treatments procedures and inexpensive herbal drugs are developed. Marham‐Mafasel is mainly made out of two traditional herbs (Arnebia euchroma and Martricaria chamomilla). Objective In this study, for the first time, the impact of Marham‐Mafasel on joint inflammation, histopathological changes and IL‐1β gene expression was evaluated in RA animal model. Methods The RA was induced by a single s.c. injection of 0.1 ml Freund's complete adjuvant into the left hind footpad. In continuous, 15 RA male Wistar rats were used in three groups: I: Control; II: Treatment I (Piroxicam) and III: Treatment II (Marham‐Mafasel). The volume of the hind paw was measured every day from 0 to 19 using water changed volume approach. The inflammation in the joint was evaluated using histopathology assay and gene expression of IL‐1β was evaluated with use of Real‐Time PCR. Results Hind paw swelling of Marham‐Mafasel at days 10th and 19th was reduced compared with the control group (p < 0.05). There was no statistically difference in histological degrading and changes index in three groups (p ≥ 0.05). Relative expression of IL‐1β in Marham‐Mafasel group was significantly decreased compared with other groups. Conclusion The co‐administration of M. Chamomile and A. euchroma, called Marham‐Mafasel, decreases IL‐1β gene expression that leads to a reduction in inflammation in rheumatoid arthritis (RA) animal model.
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Affiliation(s)
- Mohammad Majidi
- Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran.,Department of Immunology, Medical Faculty, Shahed University, Tehran, Iran
| | | | - Mohsen Naseri
- Traditional Medicine Clinical Trial Research Center, Shahed University, Tehran, Iran
| | - Shahin Bonakdar
- National Cell Bank Department, Pasteur Institute of Iran, Tehran, Iran
| | - Maryam Salimi
- Department of Biology and Anatomical Sciences, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Roya Yaraee
- Department of Immunology, Medical Faculty, Shahed University, Tehran, Iran.,Immunoregulation Research Center, Shahed University, Tehran, Iran
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13
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Salimi M, Shirazi A, Norouzian M, Jafari A, Edalatkhah H, Mehravar M, Majidi M, Mehrazar MM. H19/Igf2 Expression and Methylation of Histone 3 in Mice Chimeric Blastocysts. Rep Biochem Mol Biol 2021; 9:357-365. [PMID: 33649730 DOI: 10.29252/rbmb.9.3.357] [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: 10/31/2022]
Abstract
Background Currently, the efficient production of chimeric mice and their survival are still challenging. Recent researches have indicated that preimplantation embryo culture media and manipulation lead to abnormal methylation of histone in the H19/Igf2 promotor region and consequently alter their gene expression pattern. This investigation was designed to evaluate the relationship between the methylation state of histone H3 and H19/Igf2 expression in mice chimeric blastocysts. Methods Mouse 129/Sv embryonic stem cells (mESCs) expressing the green fluorescent protein (mESCs-GFP) were injected into the perivitelline space of 2.5 days post-coitis (dpc) embryos (C57BL/6) using a micromanipulator. H3K4 and H3K9 methylation, and H19 and Igf2 expression was measured by immunocytochemistry and q-PCR, respectively, in blastocysts. Results Histone H3 trimethylation in H3K4 and H3K9 in chimeric blastocysts was significantly less and greater, respectively (p< 0.05), than in controls. H19 expression was significantly less (p< 0.05), while Igf2 expression was less, but not significantly so, in chimeric than in control blastocysts. Conclusion Our results showed, that the alteration ofH3K4me3 and H3K9me3 methylation, change H19/Igf2 expression in chimeric blastocysts.
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Affiliation(s)
- Maryam Salimi
- Department of Biology and Anatomical Sciences, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abolfazl Shirazi
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran.,Department of Gametes and Cloning, Research Institute of Animal Embryo Technology, Shahrekord University, Shahrekord, Iran
| | - Mohsen Norouzian
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Ameneh Jafari
- Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Haleh Edalatkhah
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Maryam Mehravar
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Mohammad Majidi
- Food and Drug Laboratory Research Center, Food and Drug Organization, MOH & ME, Tehran, Iran
| | - Mohammad Mahdi Mehrazar
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
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Majidi M, Salehi M, Salimi M, Paktinat S, Sefati N, Montazeri S, Jalili A, Norouzian M. The effect of melatonin on in vitro maturation fertilization and early embryo development of mouse oocytes and expression of HMGB1 gene in blastocysts. BRAZ J PHARM SCI 2021. [DOI: 10.1590/s2175-97902020000418882] [Citation(s) in RCA: 1] [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: 12/19/2022] Open
Affiliation(s)
- Mohammad Majidi
- Iran University of Medical Sciences, Iran; Pasteur Institute of Iran, Iran
| | - Mohammad Salehi
- Shahid Beheshti University of Medical Sciences, Iran; Shahid Beheshti University of Medical Sciences, Iran
| | - Maryam Salimi
- Shahid Beheshti University of Medical Sciences, Iran; Shahid Beheshti University of Medical Sciences, Iran
| | | | | | | | - Arsalan Jalili
- Shahid Beheshti University of Medical Sciences, Iran; , Royan Institute for Stem Cell Biology and Technology, ACECR, Iran
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15
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Yazdian Kashani S, Keshavarz Moraveji M, Taghipoor M, Kowsari-Esfahan R, Hosseini AA, Montazeri L, Dehghan MM, Gholami H, Farzad-Mohajeri S, Mehrjoo M, Majidi M, Renaud P, Bonakdar S. An integrated microfluidic device for stem cell differentiation based on cell-imprinted substrate designed for cartilage regeneration in a rabbit model. Mater Sci Eng C Mater Biol Appl 2020; 121:111794. [PMID: 33579444 DOI: 10.1016/j.msec.2020.111794] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 10/30/2020] [Accepted: 12/02/2020] [Indexed: 01/12/2023]
Abstract
Separating cells from the body and cultivating them in vitro will alter the function of cells. Therefore, for optimal cell culture in the laboratory, conditions similar to those of their natural growth should be provided. In previous studies, it has been shown that the use of cellular shape at the culture surface can regulate cellular function. In this work, the efficiency of the imprinting method increased by using microfluidic chip design and fabrication. In this method, first, a cell-imprinted substrate of chondrocytes was made using a microfluidic chip. Afterwards, stem cells were cultured on a cell-imprinted substrate using a second microfluidic chip aligned with the substrate. Therefore, stem cells were precisely placed on the chondrocyte patterns on the substrate and their fibroblast-like morphology was changed to chondrocyte's spherical morphology after 14-days culture in the chip without using any chemical growth factor. After chondrogenic differentiation and in vitro assessments (real-time PCR and immunocytotoxicity), differentiated stem cells were transferred on a collagen-hyaluronic acid scaffold and transplanted in articular cartilage defect of the rabbit. After 6 months, the post-transplantation analysis showed that the articular cartilage defect had been successfully regenerated in differentiated stem cell groups in comparison with the controls. In conclusion, this study showed the potency of the imprinting method for inducing chondrogenicity in stem cells, which can be used in clinical trials due to the safety of the procedure.
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Affiliation(s)
- Sepideh Yazdian Kashani
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), 1591634311 Tehran, Iran
| | - Mostafa Keshavarz Moraveji
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), 1591634311 Tehran, Iran.
| | - Mojtaba Taghipoor
- School of Mechanical Engineering, Sharif University of Technology, 11155-9567 Tehran, Iran
| | - Reza Kowsari-Esfahan
- National Cell Bank Department, Pasteur Institute of Iran, P.O. Box 13169-43551, Tehran, Iran
| | | | - Leila Montazeri
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Mohammad Mehdi Dehghan
- Institute of Biomedical Research, University of Tehran, Tehran, Iran; Department of Surgery and Radiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Hossein Gholami
- Institute of Biomedical Research, University of Tehran, Tehran, Iran
| | - Saeed Farzad-Mohajeri
- Institute of Biomedical Research, University of Tehran, Tehran, Iran; Department of Surgery and Radiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Morteza Mehrjoo
- National Cell Bank Department, Pasteur Institute of Iran, P.O. Box 13169-43551, Tehran, Iran
| | - Mohammad Majidi
- National Cell Bank Department, Pasteur Institute of Iran, P.O. Box 13169-43551, Tehran, Iran
| | - Philippe Renaud
- Laboratory of Microsystems (LMIS4), École Polytechnique FÉdÉrale de Lausanne, Station 17, CH-1015 Lausanne, Switzerland
| | - Shahin Bonakdar
- National Cell Bank Department, Pasteur Institute of Iran, P.O. Box 13169-43551, Tehran, Iran.
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Nekoueifard S, Majidi M. COVID-19- or Tramadol-induced Seizure: A Differential Diagnosis in Young People. IJMTFM 2020. [DOI: 10.32598/ijmtfm.v10i4.32009] [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] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19) was first declared in December 2019 from Wuhan, China [1, 2]. It then has been reported a pandemic in March 2020 by the World Health Organization [3]. Clinical features of COVID-19 are different from asymptomatic to mild to moderate symptoms, such as fever, headache, myalgia, sore throat, anosmia, cough, fatigue headache, hemoptysis, and dyspnea to the life-threatening complications, including shock, pneumonia, acute respiratory distress syndrome, myocarditis, myocardial infarction, acute kidney injury, multi-organ failure, and even death [1, 2].
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Majidi M, Nekoueifard S. Efficacy of Lofexidine in the Outpatient Management of Tramadol Withdrawal Syndrome. IJMTFM 2020. [DOI: 10.32598/ijmtfm.v10i4.32270] [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] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Tramadol is recognized as an opioid with non-opiate properties. It has a low affinity for opioid receptors and prevents reabsorption of norepinephrine and serotonin at synapses. It also increases the level of Gamma Aminobutyric Acid (GABA) in the central nervous system [1, 2]. Tramadol is an analgesic for patients suffering from moderate to severe pain [1]. In addition, previous studies have shown that tramadol abuse and suicidal attempts have increased in Iran [3, 4].
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Banagozar-Mohammadi A, Delirrad M, Alizadeh A, Majidi M, Balali-Mood M. Status of clinical toxicology education and ethics in medical care of poisoned patients in the Islamic Republic of Iran and a comparison with other countries. Basic Clin Pharmacol Toxicol 2020; 126:475-483. [PMID: 31863569 DOI: 10.1111/bcpt.13380] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 12/16/2019] [Indexed: 01/19/2023]
Abstract
Clinical toxicology is not recognized as a clinical speciality in Iran. After the chemical war gas attack by the Iraqi army against the Iranian troops in the 1980s, health professionals and Iranian authorities noticed the importance of this field in clinical medicine. Collaboration between the clinical toxicologists and toxicologists of pharmacy schools resulted in the establishment of the Iranian Society of Toxicology and Poisonings in 1991 and the National Board of Toxicology in 1993. Clinical toxicology fellowship was also formed as a joint collaboration between the toxicology and internal medicine boards in 2010. Medical doctors who specialized in clinical medicine are eligible to take the entrance examination of the fellowship. In spite of the advancement of clinical toxicology and increased number of acute poisonings and drug abuse, undergraduate teaching in this field is still lacking and being taught as part of the forensic medicine curriculum since 1952. There is a lack of an efficient national poison information and control centre (s) in Iran, and no action plan and practical efforts have been done for poisoning prevention. Therefore, the number of drug abuse and acute poisonings has increased over the past four decades and induced cultural, social and health problems. According to Iranian legal medicine organization reports, poisoning is the second-most occurring cause of unnatural death. The suicidal attempt is the most common method of acute poisoning in adults. Suicidal attempt including self-poisoning is not accepted in the Islamic point of view, and thus self-poisoning is mostly neglected and may not be treated appropriately in time in some regions of Iran. Accidental poisoning in children is also common in Iran and estimated to be between 20 000 and 25 000 cases annually over the recent years. In addition, social, cultural and economic problems have induced more health problems such as drug abuse and addiction even in children. Adulterated opium to lead for economic gaining has produced thousands of cases of lead poisoning over the past few years in nearly all opium addicts, which is still a major health problem in Iran. Ban on alcoholic beverages leads some people to make their own home-made spirits, which is unfortunately contaminated with methanol. Thousands of cases of methanol poisoning and even some epidemics have occurred over the past four decades in some parts of the country. Lack of availability of essential antidotes such as succimer and fomepizole has been a major problem for the effective treatment of poisoned patients. Despite the well-known fact that cases of poisoning and drug overdose constitute a significant proportion of hospital admissions in some developing countries, clinical toxicology education and medical care of the poisoned patients are lacking. Therefore, policymakers and health authorities should realize the importance of toxicology in clinical medicine. The Iranian Ministry of Health, medical care and Medical Education should implement clinical toxicology courses for medical students; establish effective national poisons information and control centres and advance clinical toxicology services for appropriate management of poisoned patients to improve public health and the overall health policy goals.
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Affiliation(s)
- Ali Banagozar-Mohammadi
- Clinical Research Development Unit, Sina Educational, Research and Treatment Center, Department of Internal Medicine, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Delirrad
- Clinical Toxicology Department, Urmia University of Medical Sciences, Urmia, Iran
| | - Anahita Alizadeh
- Medical Toxicology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Majidi
- Clinical Toxicology Department, Urmia University of Medical Sciences, Urmia, Iran
| | - Mahdi Balali-Mood
- Medical Toxicology and Drug Abuse Research Center, Birjand University of Medical Sciences, Birjand, Iran
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Tavassoli H, Javadpour J, Taheri M, Mehrjou M, Koushki N, Arianpour F, Majidi M, Izadi-Mobarakeh J, Negahdari B, Chan P, Ebrahimi Warkiani M, Bonakdar S. Incorporation of Nanoalumina Improves Mechanical Properties and Osteogenesis of Hydroxyapatite Bioceramics. ACS Biomater Sci Eng 2018; 4:1324-1336. [PMID: 33418663 DOI: 10.1021/acsbiomaterials.7b00754] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A handful of work focused on improving the intrinsic low mechanical properties of hydroxyapatite (HA) by various reinforcing agents. However, the big challenge regarding improving mechanical properties is maintaining bioactivity. To address this issue, we report fabrication of apatite-based composites by incorporation of alumina nanoparticles (n-Al2O3). Although numerous studies have used micron or submicron alumina for reinforcing hydroxyapatite, only few reports are available about the use of n-Al2O3. In this study, spark plasma sintering (SPS) method was utilized to develop HA-nAl2O3 dense bodies. Compared to the conventional sintering, decomposition of HA and formation of calcium aluminates phases are restricted using SPS. Moreover, n-Al2O3 acts as a bioactive agent while its conventional form is an inert bioceramics. The addition of n-Al2O3 resulted in 40% improvement in hardness along with a 110% increase in fracture toughness, while attaining nearly full dense bodies. The in vitro characterization of nanocomposite demonstrated improved bone-specific cell function markers as evidenced by cell attachment and proliferation, alkaline phosphatase activity, calcium and collagen detection and nitric oxide production. Specifically, gene expression analysis demonstrated that introduction of n-Al2O3 in HA matrix resulted in accelerated osteogenic differentiation of osteoblast and mesenchymal stem cells, as expression of Runx-2 and OSP showed 2.5 and 19.6 fold increase after 2 weeks (p < 0.05). Moreover, protein adsorption analysis showed enhanced adsorption of plasma proteins to HA-nAl2O3 sample compared to HA. These findings suggest that HA-nAl2O3 could be a prospective candidate for orthopedic applications due to its improved mechanical and osteogenic properties.
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Affiliation(s)
- Hossein Tavassoli
- School of Metallurgy and Materials Engineering, Iran University of Science and Technology, P.O. Box 16846-13114, Tehran, Iran.,Department of Biomedical Engineering, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia.,School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Jafar Javadpour
- School of Metallurgy and Materials Engineering, Iran University of Science and Technology, P.O. Box 16846-13114, Tehran, Iran
| | - Mahdiar Taheri
- School of Metallurgy and Materials Engineering, Iran University of Science and Technology, P.O. Box 16846-13114, Tehran, Iran.,ANU College of Engineering & Computer Science, The Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | | | - Newsha Koushki
- Department of Bioengineering, McGill University, Montreal, Quebec, Canada H3A 0C3
| | - Farzin Arianpour
- School of Metallurgy and Materials Engineering, Iran University of Science and Technology, P.O. Box 16846-13114, Tehran, Iran.,Research and Application Center, Kastamonu University, 37100 Kastamonu, Turkey
| | | | | | - Babak Negahdari
- School of Advanced Technologies in Medicine, Department of Medical Biotechnology, Tehran University of Medical Sciences, Tehran, Iran
| | - Peggy Chan
- Department of Biomedical Engineering, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Majid Ebrahimi Warkiani
- School of Biomedical Engineering, University of Technology Sydney, Ultimo, New South Wales 2007 Australia
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Meraz I, Majidi M, Cao X, Lin H, Li L, Wang J, Baladandayuthapani V, Rice D, Sepesi B, Ji L, Roth J. TUSC2 Enhances Sensitivity to Anti-PD1 in Kras Mutant Syngeneic Mouse Lung Cancer Through NK Cells. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.06.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Mahdavi MS, Shokrgozar MA, Sardari S, Majidi M, Ghadam M. Disruption of FGF2-Heparin-FGFR1 Complex Formation by Antiangiogenic Small Molecule Found In Silico. Asian Pac J Cancer Biol 2017. [DOI: 10.31557/apjcb.2017.2.2.31-39] [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] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Background: Basic fibroblast growth factor (FGF2) is one of the most potent proangiogenic proteins involving in tumor angiogenesis. Interaction of heparin with FGF2 and FGF2 receptor (FGFR1) form a ternary complex that is prerequisite for FGF2 proangiogenic activity. Therefore, this interaction can be an important target for inhibition of angiogenesis. Material and Method: In this study, we performed screening studies by computer-aided techniques to find a small molecule interfering with this interaction. Based on ionic interactions, we found seventeen small molecules which had the capability of angiogenic inhibition. According to important negative charge distances, benzene-1, 2, 4-tricarboxylic acids, known as Trimellitic acid (TMLA), was chosen. MTT viability test, real time PCR, tube formation assay, and Flowcytometry technique were used to evaluate TMLA effect. Results: Here, the viability of HUVECs was decreased following exposure to TMLA only at high concentrations. According to real time PCR, gene expression was dramatically decreased in comparison to negative control, indicating that TMLA is an effective agent on reduction of CD31 expression. At half maximal inhibitory concentration (13mM), TMLA inhibited HUVEC tube formation process. Annexin V-FITC / PI flow cytometry technique revealed that TMLA inhibitory effect was via apoptosis. Conclusion: With respect to findings of the present study, it is possible to extend FGF2 inhibitors with much specificity based on ionic interactions strategy.
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Moradi L, Vasei M, Dehghan MM, Majidi M, Farzad Mohajeri S, Bonakdar S. Regeneration of meniscus tissue using adipose mesenchymal stem cells-chondrocytes co-culture on a hybrid scaffold: In vivo study. Biomaterials 2017; 126:18-30. [PMID: 28242519 DOI: 10.1016/j.biomaterials.2017.02.022] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 02/07/2017] [Accepted: 02/16/2017] [Indexed: 01/01/2023]
Abstract
The meniscus has poor intrinsic regenerative capacity and its damage inevitably leads to articular cartilage degeneration. We focused on evaluating the effects of Polyvinyl alcohol/Chitosan (PVA/Ch) scaffold seeded by adipose-derived mesenchymal stem cell (ASC) and articular chondrocytes (AC) in meniscus regeneration. The PVA/Ch scaffolds with different molar contents of Ch (Ch1, Ch2, Ch4 and Ch8) were cross-linked by pre-polyurethane chains. By increasing amount of Ch tensile modulus was increased from 83.51 MPa for Ch1 to 110 MPa for Ch8 while toughness showed decrease from 0.33 mJ/mm3 in Ch1 to 0.11 mJ/mm3 in Ch8 constructs. Moreover, swelling ratio and degradation rate increased with an increase in Ch amount. Scanning electron microscopy imaging was performed for pore size measurement and cell attachment. At day 21, Ch4 construct seeded by AC showed the highest expression with 24.3 and 22.64 folds increase in collagen II and aggrecan (p ≤ 0.05), respectively. Since, the mechanical properties, water uptake and degradation rate of Ch4 and Ch8 compositions had no statistically significant differences, Ch4 was selected for in vivo study. New Zealand rabbits were underwent unilateral total medial meniscectomy and AC/scaffold, ASC/scaffold, AC-ASC (co-culture)/scaffold and cell-free scaffold were engrafted. At 7 months post-implantation, macroscopic, histologic, and immunofluorescent studies for regenerated meniscus revealed better results in AC/scaffold group followed by AC-ASC/scaffold and ASC/scaffold groups. In the cell-free scaffold group, there was no obvious meniscus regeneration. Articular cartilages were best preserved in AC/scaffold group. The best histological score was observed in AC/scaffold group. Our results support that Ch4 scaffold seeded by AC alone can successfully regenerate meniscus in tearing injury and ASC has no significant contribution in the healing process.
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Affiliation(s)
- Lida Moradi
- Department of Tissue Engineering & Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Mohammad Vasei
- Department of Tissue Engineering & Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences (TUMS), Tehran, Iran; Molecular and Cell Biology Laboratory, Department of Pathology, Digestive Disease Research Institute (DDRI), Shariati Hospital, Tehran University of Medical Sciences (TUMS), Tehran, Iran.
| | - Mohammad M Dehghan
- Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Mohammad Majidi
- National Cell Bank Department, Pasteur Institute of Iran, Tehran, Iran
| | - Saeed Farzad Mohajeri
- Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Shahin Bonakdar
- National Cell Bank Department, Pasteur Institute of Iran, Tehran, Iran.
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Bonakdar S, Mahmoudi M, Montazeri L, Taghipoor M, Bertsch A, Shokrgozar MA, Sharifi S, Majidi M, Mashinchian O, Hamrang Sekachaei M, Zolfaghari P, Renaud P. Cell-Imprinted Substrates Modulate Differentiation, Redifferentiation, and Transdifferentiation. ACS Appl Mater Interfaces 2016; 8:13777-13784. [PMID: 27196338 DOI: 10.1021/acsami.6b03302] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Differentiation of stem cells into mature cells through the use of physical approaches is of great interest. Here, we prepared smart nanoenvironments by cell-imprinted substrates based on chondrocytes, tenocytes, and semifibroblasts as templates and demonstrated their potential for differentiation, redifferentiation, and transdifferentiation. Analysis of shape and upregulation/downregulation of specific genes of stem cells, which were seeded on these cell-imprinted substrates, confirmed that imprinted substrates have the capability to induce specific shapes and molecular characteristics of the cell types that were used as templates for cell-imprinting. Interestingly, immunofluorescent staining of a specific protein in chondrocytes (i.e., collagen type II) confirmed that adipose-derived stem cells, semifibroblasts, and tenocytes can acquire the chondrocyte phenotype after a 14 day culture on chondrocyte-imprinted substrates. In summary, we propose that common polystyrene tissue culture plates can be replaced by this imprinting technique as an effective and promising way to regulate any cell phenotype in vitro with significant potential applications in regenerative medicine and cell-based therapies.
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Affiliation(s)
- Shahin Bonakdar
- National Cell Bank, Pasteur Institute of Iran , P.O. Box 1316943551, Tehran, Iran
| | - Morteza Mahmoudi
- Department of Nanotechnology & Nanotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences , P.O. Box 14155-6451, Tehran, Iran
- Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School , Boston, Massachusetts 02115, United States
| | - Leila Montazeri
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR , Tehran, Iran
| | - Mojtaba Taghipoor
- Laboratory of Microsystems (LMIS4), École Polytechnique Fédérale de Lausanne , Station 17, CH-1015 Lausanne, Switzerland
| | - Arnaud Bertsch
- Laboratory of Microsystems (LMIS4), École Polytechnique Fédérale de Lausanne , Station 17, CH-1015 Lausanne, Switzerland
| | | | - Shahriar Sharifi
- MIRA Institute for Biomedical Technology and Technical Medicine, Department of Biomaterials Science and Technology, University of Twente , P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Mohammad Majidi
- National Cell Bank, Pasteur Institute of Iran , P.O. Box 1316943551, Tehran, Iran
| | - Omid Mashinchian
- Institute of Bioengineering, School of Life Sciences, École Polytechnique Fédérale de Lausanne , Station 17, CH-1015 Lausanne, Switzerland
| | | | - Pegah Zolfaghari
- National Cell Bank, Pasteur Institute of Iran , P.O. Box 1316943551, Tehran, Iran
| | - Philippe Renaud
- Laboratory of Microsystems (LMIS4), École Polytechnique Fédérale de Lausanne , Station 17, CH-1015 Lausanne, Switzerland
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Zadeh MM, Motamed N, Ranji N, Majidi M, Falahi F. Silibinin-Induced Apoptosis and Downregulation of MicroRNA-21 and MicroRNA-155 in MCF-7 Human Breast Cancer Cells. J Breast Cancer 2016; 19:45-52. [PMID: 27066095 PMCID: PMC4822106 DOI: 10.4048/jbc.2016.19.1.45] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Accepted: 12/14/2015] [Indexed: 12/11/2022] Open
Abstract
Purpose MicroRNAs (miRNAs) have received much attention owing to their aberrant expression in various stages of cancer. In many biological processes, miRNAs negatively regulate gene expression, and may be useful in therapeutic strategies. The present study evaluated the effects of silibinin (silybin), a natural flavonoid, on miRNA expression and attempted to elucidate therapeutic targets in MCF-7 breast cancer cells. Methods The rates of cell proliferation and apoptosis were determined in silibinin-treated and untreated MCF-7 cells. Furthermore, the expression levels of miR-21 and miR-155 were measured in MCF-7 cells after incubation with silibinin (100 µg/mL), and the putative targets of the miRNAs within the apoptotic pathways were predicted using bioinformatic approaches. The expression levels of some of these targets were evaluated by quantitative reverse transcription polymerase chain reaction (qRT-PCR). Results Silibinin induced apoptosis in MCF-7 cells in a dose- and time-dependent manner. qRT-PCR analysis revealed a decrease in miR-21 and miR-155 expression levels in silibinin-treated cells relative to the levels in the untreated cells. Potential miR-21 and miR-155 targets within the apoptotic pathways, such as CASP-9, BID, APAF-1, CASP-3, CASP-8, and PDCD4, were predicted by in silico analysis. qRT-PCR analysis showed upregulation of some of these potential targets including caspase-9 (CASP-9) and BID after silibinin treatment for 48 hours. Conclusion Our results suggest a correlation between the expression of miR-21 and miR-155, and MCF-7 cell proliferation. The antiproliferative activity of silibinin may partly be attributable to the downregulation of miR-21 and miR-155, and the upregulation of their apoptotic targets. Furthermore, the upregulation of CASP-9 and BID indicates that silibinin induces apoptosis through both the extrinsic and intrinsic pathways.
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Affiliation(s)
- Masoud Maleki Zadeh
- Department of Cell & Molecular Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Nasrin Motamed
- Department of Cell & Molecular Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Najmeh Ranji
- Department of Genetics, College of Science, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Mohammad Majidi
- National Cell Bank of Iran, Pasteur Institute of Iran, Tehran, Iran
| | - Fahimeh Falahi
- Cancer Epigenetics Group, Harry Perkins Institute of Medical Research & School of Anatomy, Physiology and Human Biology, The University of Western Australia, Perth, Australia
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Zamir S, Haji Seyed Javadi S, Majidi M. The characteristic of auditory hallucinations in patients with schizophrenia, schizoaffective and bipolar disorder with psychotic features in Iran. Eur Psychiatry 2016. [DOI: 10.1016/j.eurpsy.2016.01.1457] [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: 12/01/2022] Open
Abstract
IntroductionAuditory hallucinations are perceptional experiments that occur in schizophrenia, schizoaffective disorder and bipolar disorder with psychotic features. Characteristic of these hallucinations may have relation with cultural factors.AimWe have done this study to understand more about content and characteristic of auditory hallucinations in Schizophrenia, schizoaffective and bipolar disorder with psychotic features in Qazvin, a state in north-center of Iran.MethodsWe used the questionnaire that prof. Romme and Escher developed in 1987 for research purposes. Sixty patients diagnosed with schizophrenia, schizoaffective and bipolar disorder with psychotic features that admitted or attended at clinic of Qazvin medical science university hospital, psychiatry ward, were interviewed.ResultsThe 45 men and 15 women in three groups were interviewed. The most were men, single, and in fourth decade of their life. Most patients mentioned that they heard one voice. Mean age of appearing voices in patients were 19 to 29 years old. Most patients in the schizoaffective and bipolar group heard male voices and in schizophrenia were both sexes. Eighty-five percent of bipolar patients, 65% of patients with schizoaffective disorder heard friendly voices. It was 30% in patients with schizophrenia. Fifteen percent of bipolar patients, 75% of schizophrenia and 45% of schizoaffective stated that voice was hostile.ConclusionOur study has revealed that culture affected content and characteristic of auditory hallucinations. We suggested that some complementary studies will be done in future from different Iranian cultures not just people of Qazvin.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Marashi SM, Raji H, Nasri-Nasrabadi Z, Majidi M, Vasheghani-Farahani M, Abbaspour A, Ghorbani A, Vasigh S. One-lung circumvention, an interventional strategy for pulmonary salvage in acute paraquat poisoning: An evidence-based review. Tzu Chi Med J 2015. [DOI: 10.1016/j.tcmj.2015.06.002] [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: 02/08/2023] Open
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Marashi SM, Raji H, Nasri-Nasrabadi Z, Majidi M. Use of extracorporeal removal techniques in patients with paraquat toxicity and unknown hepatitis viral marker status. Tzu Chi Med J 2015; 28:39. [PMID: 28757719 PMCID: PMC5509169 DOI: 10.1016/j.tcmj.2015.07.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
| | - Hojatollah Raji
- Department of Pediatrics, Children's Medical Center, Pediatric Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran
| | - Zeynab Nasri-Nasrabadi
- Department of Pediatrics, Children's Medical Center, Pediatric Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Majidi
- Trauma Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Derakhshan ZH, Shaghaghi B, Asl MP, Majidi M, Ghazizadeh L, Chegini A, Bonakdar S. In Situ Forming Hydrogel Based on Chondroitin Sulfate–Hydroxyapatite for Bone Tissue Engineering. INT J POLYM MATER PO 2015. [DOI: 10.1080/00914037.2015.1030662] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Shojaee M, Navaee F, Jalili–Firoozinezhad S, Faturechi R, Majidi M, Bonakdar S. Fabrication and characterization of ovalbumin films for wound dressing applications. Materials Science and Engineering: C 2015; 48:158-64. [DOI: 10.1016/j.msec.2014.11.063] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 10/14/2014] [Accepted: 11/28/2014] [Indexed: 02/03/2023]
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Asadian M, Rashidi A, Majidi M, Mehrjoo M, Emami BA, Tavassoli H, Asl MP, Bonakdar S. Nanofiber protein adsorption affected by electrospinning physical processing parameters. J IRAN CHEM SOC 2015. [DOI: 10.1007/s13738-014-0569-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Koushki N, Katbab AA, Tavassoli H, Jahanbakhsh A, Majidi M, Bonakdar S. A new injectable biphasic hydrogel based on partially hydrolyzed polyacrylamide and nanohydroxyapatite as scaffold for osteochondral regeneration. RSC Adv 2015. [DOI: 10.1039/c4ra10890f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Fabrication of an injectable biphasic hydrogel based on partially hydrolyzed polyacrylamide (HPAM), nanocrystalline hydroxyapatite (nHAp), and chromium acetate (Cr(iii)) as a novel scaffold for osteochondral repair has been attempted.
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Affiliation(s)
- Newsha Koushki
- Polymer Engineering and Color Technology Department
- Amirkabir University of Technology
- Tehran
- Iran
- National Cell Bank of Iran
| | - Ali Asghar Katbab
- Polymer Engineering and Color Technology Department
- Amirkabir University of Technology
- Tehran
- Iran
| | | | | | - Mohammad Majidi
- National Cell Bank of Iran
- Pasteur Institute of Iran
- Tehran
- Iran
| | - Shahin Bonakdar
- National Cell Bank of Iran
- Pasteur Institute of Iran
- Tehran
- Iran
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Mashinchian O, Bonakdar S, Taghinejad H, Satarifard V, Heidari M, Majidi M, Sharifi S, Peirovi A, Saffar S, Taghinejad M, Abdolahad M, Mohajerzadeh S, Shokrgozar MA, Rezayat SM, Ejtehadi MR, Dalby MJ, Mahmoudi M. Cell-imprinted substrates act as an artificial niche for skin regeneration. ACS Appl Mater Interfaces 2014; 6:13280-13292. [PMID: 24967724 DOI: 10.1021/am503045b] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Bioinspired materials can mimic the stem cell environment and modulate stem cell differentiation and proliferation. In this study, biomimetic micro/nanoenvironments were fabricated by cell-imprinted substrates based on mature human keratinocyte morphological templates. The data obtained from atomic force microscopy and field emission scanning electron microscopy revealed that the keratinocyte-cell-imprinted poly(dimethylsiloxane) casting procedure could imitate the surface morphology of the plasma membrane, ranging from the nanoscale to the macroscale, which may provide the required topographical cell fingerprints to induce differentiation. Gene expression levels of the genes analyzed (involucrin, collagen type I, and keratin 10) together with protein expression data showed that human adipose-derived stem cells (ADSCs) seeded on these cell-imprinted substrates were driven to adopt the specific shape and characteristics of keratinocytes. The observed morphology of the ADSCs grown on the keratinocyte casts was noticeably different from that of stem cells cultivated on the stem-cell-imprinted substrates. Since the shape and geometry of the nucleus could potentially alter the gene expression, we used molecular dynamics to probe the effect of the confining geometry on the chain arrangement of simulated chromatin fibers in the nuclei. The results obtained suggested that induction of mature cell shapes onto stem cells can influence nucleus deformation of the stem cells followed by regulation of target genes. This might pave the way for a reliable, efficient, and cheap approach of controlling stem cell differentiation toward skin cells for wound healing applications.
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Affiliation(s)
- Omid Mashinchian
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine (SATiM), Tehran University of Medical Sciences , P.O. Box 14177-55469, Tehran, Iran
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Foroughi M, Argani H, Hassntash SA, Hekmat M, Majidi M, Beheshti M, Mehdizadeh B, Yekani B. Lack of renal protection of ultrafiltration during cardiac surgery: a randomized clinical trial. J Cardiovasc Surg (Torino) 2014; 55:407-413. [PMID: 24189519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
AIM The objective of this study was to determine the intraoperative ultrafiltration effect on postoperative AKI. METHODS In this prospective randomized clinical trail, 159 patients scheduled for elective cardiac surgery, were randomly assigned to either hemofilter (N.=87) or control group (N.=72). The primary and secondary outcomes were AKI (defined as ≥50% increase in the serum creatinine level) and increased urinary neutrophil gelatinase-associated lipocalin (NGAL) in the postoperative period, respectively. RESULTS The two groups were similar with respect to comorbidities and also surgical procedure, except ultrafiltration. The incidence of AKI was equal in the both groups (11% vs. 5%, P=0.2, respectively). Creatinine increased after surgery (P=0.00) without significant differences between the both groups (P=0.2). Urinary NGAL also showed no significant difference between the groups. Age, euroscore, hyperlipidemia, pulmonary disease and urinary volume during operation correlated with the development of AKI. Postoperative blood loss was less in the hemofilter than control group (820±550 mL vs. 1100±630 mL, P=0.04). There was no difference in the length of intubation and stay in intensive care unit. CONCLUSION Routine use of ultrafiltration during cardiac surgery offers no advantages in renal protection and reduction of AKI incidence.
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Affiliation(s)
- M Foroughi
- Cardiovascular Research Center Shahid Beheshti University of Medical Sciences Tehran, Iran -
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Farokhi M, Mottaghitalab F, Hadjati J, Omidvar R, Majidi M, Amanzadeh A, Azami M, Tavangar SM, Shokrgozar MA, Ai J. Structural and functional changes of silk fibroin scaffold due to hydrolytic degradation. J Appl Polym Sci 2013. [DOI: 10.1002/app.39980] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Mehdi Farokhi
- Department of Tissue Engineering, School of Advanced Technologies in Medicine; Tehran University of Medical Sciences; 43 Tehran Iran
| | - Fatemeh Mottaghitalab
- Department of Nanobiotechnology, Faculty of Biological Sciences; Tarbiat Modares University (TMU); 124 Tehran Iran
| | - Jamshid Hadjati
- Department of Tissue Engineering, School of Advanced Technologies in Medicine; Tehran University of Medical Sciences; 43 Tehran Iran
| | - Ramin Omidvar
- Biomedical Engineering Department; Amirkabir University of Technology (Tehran Polytechnic); 78 Tehran Iran
| | - Mohammad Majidi
- National Cell Bank of Iran, Pasteur Institute of Iran; 69 Tehran Iran
| | - Amir Amanzadeh
- National Cell Bank of Iran, Pasteur Institute of Iran; 69 Tehran Iran
| | - Mahmoud Azami
- Department of Tissue Engineering, School of Advanced Technologies in Medicine; Tehran University of Medical Sciences; 43 Tehran Iran
| | - Seyed Mohammad Tavangar
- Department of Tissue Engineering, School of Advanced Technologies in Medicine; Tehran University of Medical Sciences; 43 Tehran Iran
| | | | - Jafar Ai
- Department of Tissue Engineering, School of Advanced Technologies in Medicine; Tehran University of Medical Sciences; 43 Tehran Iran
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Marashi SM, Majidi M, Sadeghian M, Nasri-Nasabadi Z. Medical image. Frontotemporal dementia (FTD). N Z Med J 2013; 126:111-112. [PMID: 24154776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Affiliation(s)
- Sayed Mahdi Marashi
- Tehran University of Medical Sciences, Department of Pediatrics, Children's Medical Center, Pediatric Center of Excellence, No 62, Dr Gharib St, Tehran, Iran.
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Shokrgozar MA, Fattahi M, Bonakdar S, Ragerdi Kashani I, Majidi M, Haghighipour N, Bayati V, Sanati H, Saeedi SN. Healing potential of mesenchymal stem cells cultured on a collagen-based scaffold for skin regeneration. Iran Biomed J 2012; 16:68-76. [PMID: 22801279 DOI: 10.6091/ibj.1053.2012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
BACKGROUND Wound healing of burned skin remains a major goal in public health. Previous reports showed that the bone marrow stem cells were potent in keratinization and vascularization of full thickness skin wounds. METHODS In this study, mesenchymal stem cells were derived from rat adipose tissues and characterized by flowcytometry. Staining methods were used to evaluate their differentiation ability. A collagen-chitosan scaffold was prepared by freeze-drying method and crosslinked by carbodiimide-based crosslinker. RESULTS The results of immunecytochemistry and PCR experiments confirmed the adipose-derived stem cells (ASC) in differentiation to the keratinocytes under the treatment of keratinocyte growth factor. The isolated ASC were seeded on the scaffolds and implanted at the prepared wounds. The scaffolds without cells were considered as a control and implanted on the other side of the rat. Histopathological analyses confirmed the formation of new tissue on the scaffold-cell side after 14 days with the formation of dermis and epidermis. CONCLUSION These results indicated the capacity of ASC in differentiation to keratinocytes and also wound healing in vivo.
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Affiliation(s)
| | - Maryam Fattahi
- National Cell Bank of Iran, Pasteur Institute of Iran, Tehran, Iran.,Dept. of Molecular Cell Biology, Khatam University, Tehran, Iran
| | - Shahin Bonakdar
- National Cell Bank of Iran, Pasteur Institute of Iran, Tehran, Iran
| | - Iraj Ragerdi Kashani
- Dept. of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Majidi
- National Cell Bank of Iran, Pasteur Institute of Iran, Tehran, Iran
| | | | - Vahid Bayati
- Dept. of Anatomy, Ahvaz Jundishapur University of Medical Science, Ahvaz, Iran.,Cellular and Molecular Research Center, Ahvaz Jundishapur University of Medical Science, Ahvaz, Iran
| | - Hassan Sanati
- National Cell Bank of Iran, Pasteur Institute of Iran, Tehran, Iran
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Abediankenari S, Yousefzadeh Y, Majidi M, Ghasemi M, Nasehi MM, Ghaffari J, Habibi Saravi R, Abedini M, Elyasi M. MICB gene expression on peripheral blood mononuclear cells and susceptibility to multiple sclerosis in north of Iran. Iran J Allergy Asthma Immunol 2012; 10:261-5. [PMID: 22184268 DOI: 010.04/ijaai.261265] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Multiple sclerosis (MS) is an autoimmune multifactorial degenerative disease with detrimental affliction on central nervous system. MHC class I chain- related geneA,B(MICA and MICB) are nonclassical human leukocyte antigens that can affect on some diseases and also on transplantation. The purpose of this study was to evaluate the MICA and MICB MRNA expression in multiple sclerosis patients. In this study, we evaluated MICA and MICB MRNA expression in the peripheral blood mononuclear cells by reverse transcryptase-polymerase chain reaction(RT-PCR) in MS patients and normal controls. The results of this study showed that 32.6% of patients with progressive clinical outcome over expressed MICB genes in comparison with controls ( p=0.002). It is concluded that the high expression of MICB gene in MS patients is an important criterion of MS disease that it may be due to the interaction between MICB and its receptor on CD8+T or NK cells.
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Affiliation(s)
- Saeid Abediankenari
- Microbiology and Immunology Department, Mazandaran University of Medical Sciences, Sari, Iran.
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Hedayati MT, Mayahi S, Fakhar M, Shokohi T, Majidi M. Cryptococcus neoformans isolation from swallow (Hirundo rustica) excreta in Iran. Rev Inst Med Trop Sao Paulo 2011; 53:125-7. [DOI: 10.1590/s0036-46652011000300002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2011] [Accepted: 04/19/2011] [Indexed: 11/21/2022] Open
Abstract
Cryptococcus neoformans is an encapsulated yeast that can cause cryptococcosis, a life-threatening infection that mainly occurs in immunocompromised patients. The major environmental sources of C. neoformans have been shown to be soil contaminated with avian droppings. In the present study, we evaluated the isolation of C. neoformans from swallow (Hirundo rustica) excreta in two northern cities of Iran. Ninety-seven swallow droppings were evaluated and 498 yeast-like colonies were isolated and identified as Rhodotorula spp. (62.8%), Candida spp. (28.5%)and C. neoformans (8.7%). Cryptococcus neoformans was isolated from 5/97 (5.2%) of collected samples. Min-Max colony forming units (CFU) per one gram for the positive samples were 3-10 C. neoformans colonies. The total mean CFU per one gram for the positive samples was 4.8. The results of this study demonstrate that excreta of swallow may harbor different species of potentially pathogenic yeasts, mainly C. neoformans, and may be capable of disseminating these fungi in the environment.
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Majidi M, Kosinski AS, Al-Khatib SM, Lemmert ME, Smolders L, van Weert A, Reiber JH, Tzivoni D, Bar FW, Wellens HJ, Gorgels AP, Krucoff MW. Reperfusion ventricular arrhythmia 'bursts' predict larger infarct size despite TIMI 3 flow restoration with primary angioplasty for anterior ST-elevation myocardial infarction. Eur Heart J 2008; 30:757-64. [DOI: 10.1093/eurheartj/ehp005] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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Majidi M, Kosinski AS, Al-Khatib SM, Lemmert ME, Smolders L, van Weert A, Reiber JH, Tzivoni D, Bar FW, Wellens HJ, Gorgels AP, Krucoff MW. Reperfusion ventricular arrhythmia 'bursts' in TIMI 3 flow restoration with primary angioplasty for anterior ST-elevation myocardial infarction: a more precise definition of reperfusion arrhythmias. Europace 2008; 10:988-97. [DOI: 10.1093/europace/eun123] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Shahraki M, Mahboob S, Rashidi MR, Majidi M, Mesgari M, Shahraki ZT. Effect of nibbling and gorging dietary regimens on weight and lipid profile in rat. Pak J Biol Sci 2007; 10:4444-4448. [PMID: 19093509 DOI: 10.3923/pjbs.2007.4444.4448] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
To investigate the effects of nibbling and gorging dietary regimens on weight and lipid profiles in rat, thirty female Wistar rats, after 10 day acclimatization period, were weighed and randomly assigned into two equal groups. They were fed the same food for 60 days as eight meals at 2 h intervals starting from 6 pm (nibbling group) or as two meals at 9 pm and 6 am (gorging group). The serum lipid levels and weight of animals were determined before and after the intervention. The body weight in two groups increased significantly (p < 0.001) during the period of study but there was no significant (p > 0.05) difference between two groups before and after the intervention. Nibbling regimen caused a reduction in the serum Total Cholesterol (TC), triglyceride and LDL-C levels, whereas these parameters increased during gorging diet. However, none of these changes were significant. There was a significant decrease (p < 0.05) in TC and LDL-C levels in nibbling diet compared to gorging one. According to obtained results, nibbling regimen has better effect on lipid profile than gorging one in rat.
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Affiliation(s)
- M Shahraki
- Department of Nutrition, Faculty of Medical, Zahedan University of Medical Sciences and Health Services, Zahedan, Iran
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Laag E, Majidi M, Cekanova M, Masi T, Takahashi T, Schuller HM. NNK activates ERK1/2 and CREB/ATF-1 via beta-1-AR and EGFR signaling in human lung adenocarcinoma and small airway epithelial cells. Int J Cancer 2006; 119:1547-52. [PMID: 16671086 DOI: 10.1002/ijc.21987] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
We have shown that the tobacco nitrosamine 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) is an agonist for -adrenergic receptors (beta-ARs) and increased DNA synthesis of human lung adenocarcinoma cells with features of bronchiolar Clara cells by binding to these receptors. Using a cell line derived from a human pulmonary adenocarcinoma with Clara cell phenotype (PACC) and immortalized human small airway epithelial cells (HPLD1), the putative cells of origin of this cancer type, our current studies have analyzed signaling initiated by binding of NNK to the beta 1-AR. NNK upregulated ERK1/2 and CREB/ATF-1 phosphorylation in a PKA-dependent manner in both cell lines. This response was further increased by transient overexpression of the beta 1-AR. Pre-exposure of cells to the selective beta 1-AR antagonist, atenolol, attenuated the stimulatory effects of NNK, suggesting the latter upregulated ERK1/2 and CREB/ATF-1 via this receptor. In vivo labeling and immunoprecipitation assays revealed that NNK phosphorylated the epidermal growth factor receptor (EGFR) at tyrosine residues, 991, 1068 and 1173, an effect inhibited by atenolol. The inhibitor of EGFR-specific tyrosine kinases, AG1478, reduced NNK ability to stimulate ERK1/2 and CREB/ATF-1. Genomic analysis of the exons 18-21 of the EGFR genes showed that no mutations were present in either gene. Collectively, our data provide evidence, for the first time, that NNK targets ERK1/2 and CREB/ATF-1 proteins via dual signaling involving beta 1-AR and EGFR pathways in PACCs and their putative cells of origin.
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Affiliation(s)
- E Laag
- Experimental Oncology Laboratory, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996, USA
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Majidi M, Gutkind JS, Lichy JH. Deletion of the COOH terminus converts the ST5 p70 protein from an inhibitor of RAS signaling to an activator with transforming activity in NIH-3T3 cells. J Biol Chem 2000; 275:6560-5. [PMID: 10692462 DOI: 10.1074/jbc.275.9.6560] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Expression of the human protein ST5-p70 correlates with reduced tumorigenic phenotype in mammalian cells, reverts their transformed phenotype, and restores their contact-dependent growth. Furthermore, expression of p70 in COS-7 cells suppresses activation of mitogen activated protein kinase MAPK/ERK2 by the largest ST5 product, p126, in response to epidermal growth factor stimulation. Here we show that deletions of the COOH-terminal region of p70 transform NIH3T3 cells and induce their anchorage-independent growth. Analysis of signaling leading to MAPK/ERK2 stimulation revealed that in COS-7 cells, expression of either p70-DeltaC1 or p70-DeltaC2 markedly enhanced ERK2 activity in a growth factor-independent manner. Whereas wild-type p70 slightly inhibited ERK2 activation by RAS and MEK2, co-expression or p70-DeltaC1 or p70-DeltaC2 with either protein stimulated ERK2 cooperatively. This activity was completely blocked by the dominant negative mutants RAS17N or MEKAA, suggesting that p70 functions upstream of RAS. Unlike wild-type p70, expression of p70-DeltaC1 or p70-DeltaC2 mutant did not interfere with the ability of ST5-p126 to stimulate ERK2. Taken together, the data suggest that the COOH-terminal tail, residues 489-609, contains some of the critical determinants for the function of p70. Loss of this region converts the protein from an inhibitor to a constitutive activator of the RAS-ERK2 pathway.
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Affiliation(s)
- M Majidi
- Department of Cellular Pathology, Armed Forces Institute of Pathology, Washington, D. C. 20306-6000, USA.
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Abstract
The human ST5 gene is expressed as 4.6, 3.1 and 2.8 kb transcripts encoding putative 126, 82 and 70 kDa proteins that function in the MAP kinase signaling pathway in transient expression assays. Expression of the 2.8 kb transcript correlates with reduced tumorigenicity in HeLa-fibroblast hybrids, suggesting a role in tumor suppression. We now report the detection of ST5 proteins in cellular extracts, demonstrate specific expression of p70 in non-tumorigenic HeLa-fibroblast hybrids, extend the correlation between p70 expression and cellular morphology to a wide variety of cell lines, and provide direct evidence that p70 can effect changes in cell growth and morphology. ST5 proteins were identified in extracts of human, mouse and simian epithelial cells and fibroblasts, but were absent from lymphoid cells. Transfection of the 2.8 kb cDNA into a p70-negative mouse fibroblast line yielded stable transfectants with a flattened, less refractile morphology relative to controls. The p70 expressing clones had initial growth rates similar to those of control cells but their saturation density was reduced threefold, suggesting a restoration of contact-regulated growth. In conjunction with previous findings, these results suggest that ST5 proteins participate directly in events affecting cytoskeletal organization and tumorigenicity.
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Affiliation(s)
- A E Hubbs
- Department of Cellular Pathology, Armed Forces Institute of Pathology, Washington, DC 20306-6000, USA
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Abstract
The human ST5 gene encodes three proteins with predicted molecular masses of 126, 82, and 70 kDa. These widely expressed proteins share a C-terminal region that bears significant sequence homology to a group of GDP/GTP exchange proteins for the Rab3 family of small GTP binding proteins. The N-terminal region of the largest ST5 protein, p126, contains two proline-rich sequences, PR1 and PR2, with consensus motifs similar to Src homology 3 (SH3) binding regions and to mitogen-activated protein kinase (MAPK) phosphorylation sites. Based on these properties, we sought to investigate the activity of ST5 proteins in signal transduction pathways. In vitro, p126 displayed preferential binding to c-Abl SH3, as compared with other SH3 domains. This interaction was mediated by the PR2 sequence. In vivo, expression of p126, but not p82 or p70, activated MAPK/ERK2 in response to EGF in COS-7 cells. Expression of c-Abl with p126 greatly enhanced this activity. Deletion of PR1 blocked the ability of p126 to activate ERK2. Deletion of PR2 did not affect the basal activity, but blocked the stimulatory effect of c-Abl. Whereas p82 expression had no effect on ERK2 activation by p126, p70 completely abrogated this activity. These observations suggest that ST5 can function as a signaling protein and can provide a link between c-Abl and ERK2.
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Affiliation(s)
- M Majidi
- Department of Cellular Pathology, Armed Forces Institute of Pathology, Washington, D.C. 20306-6000, USA
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Lichy JH, Majidi M, Elbaum J, Tsai MM. Differential expression of the human ST5 gene in HeLa-fibroblast hybrid cell lines mediated by YY1: evidence that YY1 plays a part in tumor suppression. Nucleic Acids Res 1996; 24:4700-8. [PMID: 8972856 PMCID: PMC146314 DOI: 10.1093/nar/24.23.4700] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Through a mutational analysis of a differentially regulated enhancer, we present evidence that supports a role for the transcription factor YY1 in tumor suppression in HeLa/fibroblast somatic cell hybrids. The human ST5 gene was previously shown to be expressed as three RNA species, 4.6, 3.1 and 2.8 kb in length. Whereas the two larger species are expressed at similar levels in all cell lines examined, the 2.8 kb mRNA is expressed specifically in non-tumorigenic hybrids. In this study, the basis for the differential expression of this mRNA species was investigated. The message was shown to originate from a promoter located within an intron of the ST5 gene. An enhancer located approximaely 1500 nt upstream of the start site was required for cell type specific expression. Mutational analysis of this enhancer revealed an AP1 site and five YY1 sites which were necessary for full enhancer activity. Levels of YY1 DNA binding activity were found to be as much as 6-fold higher in the non-tumorigenic cells relative to the tumorigenic cells, while AP1 activity was similar in both cell types. These results suggest that a signaling pathway targeting YY1 may play an important role in tumor suppression in HeLa-fibroblast hybrids.
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Affiliation(s)
- J H Lichy
- Department of Cellular Pathology, Armed Forces Institute of Pathology, Washington, DC 20306-6000, USA.
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