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Kahrizi MS, Mousavi E, Khosravi A, Rahnama S, Salehi A, Nasrabadi N, Ebrahimzadeh F, Jamali S. Recent advances in pre-conditioned mesenchymal stem/stromal cell (MSCs) therapy in organ failure; a comprehensive review of preclinical studies. Stem Cell Res Ther 2023; 14:155. [PMID: 37287066 DOI: 10.1186/s13287-023-03374-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 05/10/2023] [Indexed: 06/09/2023] Open
Abstract
Mesenchymal stem/stromal cells (MSCs)-based therapy brings the reassuring capability to regenerative medicine through their self-renewal and multilineage potency. Also, they secret a diversity of mediators, which are complicated in moderation of deregulated immune responses, and yielding angiogenesis in vivo. Nonetheless, MSCs may lose biological performance after procurement and prolonged expansion in vitro. Also, following transplantation and migration to target tissue, they encounter a harsh milieu accompanied by death signals because of the lack of proper tensegrity structure between the cells and matrix. Accordingly, pre-conditioning of MSCs is strongly suggested to upgrade their performances in vivo, leading to more favored transplantation efficacy in regenerative medicine. Indeed, MSCs ex vivo pre-conditioning by hypoxia, inflammatory stimulus, or other factors/conditions may stimulate their survival, proliferation, migration, exosome secretion, and pro-angiogenic and anti-inflammatory characteristics in vivo. In this review, we deliver an overview of the pre-conditioning methods that are considered a strategy for improving the therapeutic efficacy of MSCs in organ failures, in particular, renal, heart, lung, and liver.
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Affiliation(s)
| | - Elnaz Mousavi
- Department of Endodontics, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran
| | - Armin Khosravi
- Department of Periodontics, Dental School, Islamic Azad University, Isfahan (Khorasgan) Branch, Isfahan, Iran
| | - Sara Rahnama
- Department of Pediatric Dentistry, School of Dentistry, Semnan University of Medical Sciences, Semnan, Iran
| | - Ali Salehi
- Department of Oral and Maxillofacial Radiology, School of Dentistry, Islamic Azad University, Isfahan (Khorasgan) Branch, Isfahan, Iran
| | - Navid Nasrabadi
- Department of Endodontics, School of Dentistry, Birjand University of Medical Sciences, Birjand, Iran
| | - Farnoosh Ebrahimzadeh
- Department of Internal Medicine, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Samira Jamali
- Department of Endodontics, Stomatological Hospital, College of Stomatology, Xi'an Jiaotong University, Shaanxi, People's Republic of China.
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Fathi A, Rahnama S, Alesaeidi S, Mousavi E, Bagherboum N, GHolami M, Fotovat F. Comparing knowledge and opinions of medical and dental students in the field of pediatric anesthesia. J Family Med Prim Care 2023; 12:632-636. [PMID: 37312796 PMCID: PMC10259552 DOI: 10.4103/jfmpc.jfmpc_2169_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 07/31/2022] [Accepted: 10/07/2022] [Indexed: 06/15/2023] Open
Abstract
Background and Purpose Dental treatment under general anesthesia (GA) is one of the common treatment methods today for dental treatment in children, so dentists' point of view in this field is very important. Therefore, the purpose of this study was evaluation the awareness and attitude of pediatric dentists and final-year dental students about dental treatment for children under GA. Methods To conduct this study, 150 people, including 75 general dentists (GD) and 75 final-year dental students (FYDS), were randomly selected in Tehran. In this study, a researcher-made questionnaire containing 15 questions (7 awareness questions and 8 attitude questions) was used to evaluate the awareness and attitude of the participants. After extracting the raw results, statistical analysis of the results was done using SPSS-Ver. 22 software. Results 60% of the participants (90 people) were men and the remaining 40% (60 people) were women. The results showed that the level of awareness of male dentists was significantly higher than that of female dentists (P = 0.015). In addition, although the awareness level of FYDS was lower than GD, this difference was not statistically significant (P = 0.130). The average level of awareness among different age groups had a significant difference (P = 0.009), so the age group of 36-45 years compared to the younger age groups (25-35 years) and the older age groups (36-45 and 55 -46 years), had a higher level of awareness. Conclusion According to the findings, it can be concluded that it is necessary to use appropriate educational methods to improve the level of awareness and attitude of children's dentists.
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Affiliation(s)
- Amirhossein Fathi
- Department of Prosthodontics, Dental Materials Research Center, Dental Research Institute, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Sara Rahnama
- Department of Pediatric Dentistry, School of Dentistry, Semnan University of Medical Sciences, Semnan, Iran
| | - Sogol Alesaeidi
- Department of Pediatric Medicine, Imam Hossein Hospital, Resident of Pediatric Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Elnaz Mousavi
- Dental Sciences Research Center, Department of Endodontics, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran
| | - Nazila Bagherboum
- Dayananda Sagar, College of Dental Science Bangalore, IndiaRajiv Gandhi, University of Health Sciences, India
| | - Mahnaz GHolami
- Post Graduated Student, Department of Periodontics, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Farnoush Fotovat
- Department of Prosthodontics, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran
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Rahnama S, Spence R, Vathsangam N, Baskerville CL, Bailey SR, de Laat MA, Anderson ST, Pollitt CC, Sillence MN. Effects of insulin on IGF-1 receptors in equine lamellar tissue in vitro. Domest Anim Endocrinol 2021; 74:106530. [PMID: 32818904 DOI: 10.1016/j.domaniend.2020.106530] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 07/23/2020] [Accepted: 07/23/2020] [Indexed: 11/21/2022]
Abstract
Although it is understood that equine endocrinopathic laminitis can be triggered by high concentrations of insulin, it is unclear whether this represents a direct action on lamellar tissue via insulin receptors (InsR), an interaction with IGF-1 receptors (IGF-1R), or some other, indirect action. This uncertainty is because of the reported scarcity of InsR in lamellar tissue and the low affinity of insulin for equine IGF-1R. In the present study, the effects of insulin and IGF-1 (as a positive control) were examined using lamellar explants isolated from the hooves of healthy horses and incubated in cell culture medium for between 2 min and 48 h. In this system, a low physiological concentration of IGF-1 (10 nM; 1.31 ng/mL) caused a marked increase in the appearance of phosphorylated IGF-1R after 5 min (P < 0.05), and this effect was blocked by a human anti-IGF-1R monoclonal antibody (mAb). However, a high concentration of insulin (10 nM; 1,430 μIU/mL) appeared to cause dephosphorylation of the IGF-1R after 5 min (P < 0.01), 15 min, and 30 min (P < 0.001). Using 3H-thymidine as a marker, it was also demonstrated that insulin and IGF-1-stimulated cell proliferation in lamellar explants over the same concentration range as each other (1-100 nM), implying that each peptide acts via its own receptor (P < 0.001). Conversely, the effect of both peptides could be blocked using a selective anti-IGF-1R mAb (P < 0.001), implying that insulin acts via IGF1-R (either directly or indirectly). Notwithstanding this conundrum, the results demonstrate that insulin acts directly on lamellar tissue and suggest that a therapeutic anti-IGF-1R mAb could be useful in treating or preventing endocrinopathic laminitis.
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Affiliation(s)
- S Rahnama
- School of Biology and Environmental Science, Queensland University of Technology, Brisbane, Queensland, Australia
| | - R Spence
- School of Biology and Environmental Science, Queensland University of Technology, Brisbane, Queensland, Australia
| | - N Vathsangam
- Department of Veterinary Biosciences, The University of Melbourne, Melbourne, Victoria, Australia
| | - C L Baskerville
- Department of Veterinary Biosciences, The University of Melbourne, Melbourne, Victoria, Australia
| | - S R Bailey
- Department of Veterinary Biosciences, The University of Melbourne, Melbourne, Victoria, Australia
| | - M A de Laat
- School of Biology and Environmental Science, Queensland University of Technology, Brisbane, Queensland, Australia
| | - S T Anderson
- School of Biomedical Sciences, The University of Queensland, St Lucia, Queensland, Australia
| | - C C Pollitt
- School of Veterinary Science, The University of Queensland, Gatton, Australia
| | - M N Sillence
- School of Biology and Environmental Science, Queensland University of Technology, Brisbane, Queensland, Australia.
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Rahnama S, Shariati S, Divsar F. Selective aptamer conjugation to silver-coated magnetite nanoparticles for magnetic solid-phase extraction of trace amounts of Pb2+ ions. RSC Adv 2021; 11:4971-4982. [PMID: 35424451 PMCID: PMC8694522 DOI: 10.1039/d1ra00006c] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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: 01/01/2021] [Accepted: 01/02/2021] [Indexed: 11/21/2022] Open
Abstract
Herein, a novel aptamer-functionalized magnetic adsorbent was developed and combined with magnetic solid-phase extraction (MSPE) for the specific enrichment of Pb2+ ions prior to flame atomic absorption spectrometric detection.
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Affiliation(s)
- Sara Rahnama
- Department of Chemistry
- Rasht Branch
- Islamic Azad University
- Rasht
- Iran
| | - Shahab Shariati
- Department of Chemistry
- Rasht Branch
- Islamic Azad University
- Rasht
- Iran
| | - Faten Divsar
- Department of Chemistry
- Payame Noor University
- Tehran
- Iran
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Rahnama S, Vathsangam N, Spence R, Anderson ST, de Laat MA, Bailey S, Sillence MN. Identification of monoclonal antibodies suitable for blocking IGF-1 receptors in the horse. Domest Anim Endocrinol 2021; 74:106510. [PMID: 32652390 DOI: 10.1016/j.domaniend.2020.106510] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 06/11/2020] [Accepted: 06/11/2020] [Indexed: 01/19/2023]
Abstract
Prolonged hyperinsulinemia is thought to be the cause of equine endocrinopathic laminitis, a common and crippling disease of the foot, for which there are no pharmacologic treatments other than pain relief. It has been suggested that insulin causes its effects on the lamellae by activating IGF-1 receptors (IGF-1R), as insulin receptors (InsR) are scarce in this tissue, whereas IGF-1R are abundant and become downregulated after prolonged insulin infusion. As a first step toward confirming this mechanism and beginning to develop a therapeutic anti-IGF-1R monoclonal antibody (mAb) for horses, it was necessary to identify available human IGF-1R mAbs that would recognize equine receptors. Four IGF-1R mAbs were tested using soluble equine IGF-1R, with ELISA and flow cytometry. Frozen equine lamellar and liver tissue was also used in radioligand binding assays. The results demonstrated that only one of the mAbs tested (mAb1) was able to compete effectively with IGF-1 for binding to its receptors in equine lamellar tissue, with an IC50 of 5 to 159 ng/mL. None of the 4 mAbs were able to bind to equine hepatic InsR. This study has generated valuable structure-activity information and has identified a prototype anti-IGF-1R mAb suitable for further development.
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Affiliation(s)
- S Rahnama
- School of Biology and Environmental Science, Queensland University of Technology, Brisbane, Queensland, Australia
| | - N Vathsangam
- Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Melbourne, Victoria, Australia
| | - R Spence
- School of Biology and Environmental Science, Queensland University of Technology, Brisbane, Queensland, Australia
| | - S T Anderson
- School of Biomedical Sciences, The University of Queensland, St Lucia, Queensland, Australia
| | - M A de Laat
- School of Biology and Environmental Science, Queensland University of Technology, Brisbane, Queensland, Australia
| | - S Bailey
- School of Biomedical Sciences, The University of Queensland, St Lucia, Queensland, Australia
| | - M N Sillence
- School of Biology and Environmental Science, Queensland University of Technology, Brisbane, Queensland, Australia.
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Rahnama S. Decorative Arts of the Tunisian École: Fabrications of Modernism, Gender, and Power. Journal of Middle East Women's Studies 2020. [DOI: 10.1215/15525864-8637437] [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: 11/19/2022]
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Shariati S, Parto N, Bozorgzadeh E, Zanjanchi P, Rahnama S. Magnetic solid phase preconcentration of cadmium in water samples using sulfonic acid functionalized Kit-6 magnetite mesoporous nanocomposites followed by flame atomic absorption spectrometry. J IRAN CHEM SOC 2020. [DOI: 10.1007/s13738-020-01995-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Nanayakkara SN, Rahnama S, Harris PA, Anderson ST, de Laat MA, Bailey S, Sillence MN. Characterization of insulin and IGF-1 receptor binding in equine liver and lamellar tissue: implications for endocrinopathic laminitis. Domest Anim Endocrinol 2019; 66:21-26. [PMID: 30205269 DOI: 10.1016/j.domaniend.2018.05.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 05/25/2018] [Accepted: 05/31/2018] [Indexed: 01/19/2023]
Abstract
Although it is well established that equine laminitis can be triggered by extreme hyperinsulinemia, the mechanism of insulin action is not known. High concentrations of insulin lead to separation of the weight-bearing apparatus from the hoof wall and are associated with an increased cycle of cell death and proliferation in the lamellae. Gene expression and immunohistochemistry studies have indicated that the lamellae are sparsely populated with insulin receptors, whereas IGF-1 receptors (IGF-1R) are abundant, suggesting that the action of insulin may be mediated by insulin binding to the IGF-1R. To investigate this possibility, cell membrane fragments containing IGF-1R were extracted from the livers of 6 horses and the lamellae of >50 horses euthanized for nonresearch purposes at an abattoir. Radioligand-binding studies using 125I-IGF-1 and 125I-insulin confirmed an abundance of high-affinity IGF-1R in the liver (KD 0.11 nM, Bmax 223 fmol/mg protein) and lamellae (KD 0.16 nM, Bmax 243 fmol/mg protein). However, the affinity of insulin for binding to the lamellar IGF-1R (Ki 934 nM) was >5,800 fold less than that of IGF-1, suggesting that insulin is unlikely to bind to equine IGF-1R at physiological concentrations. Although insulin receptors could be detected in the liver (KD 0.48 nM, Bmax 123 fmol/mg protein), they were barely detectable in lamellae (estimated Bmax 14 fmol/mg protein). There was no evidence to support the presence of insulin/IGF-1 hybrid receptors in either tissue. These findings suggest that insulin does not act directly through IGF-1 receptors and that an alternative theory is required to explain the mechanism of insulin action in laminitis.
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Affiliation(s)
- S N Nanayakkara
- Earth, Environmental and Biological Sciences School, Queensland University of Technology, Brisbane, Queensland, Australia
| | - S Rahnama
- Earth, Environmental and Biological Sciences School, Queensland University of Technology, Brisbane, Queensland, Australia
| | - P A Harris
- Equine Studies Group, WALTHAM Centre for Pet Nutrition, Waltham-on-the-Wolds, UK
| | - S T Anderson
- School of Biomedical Sciences, The University of Queensland, St Lucia, Queensland, Australia
| | - M A de Laat
- Earth, Environmental and Biological Sciences School, Queensland University of Technology, Brisbane, Queensland, Australia
| | - S Bailey
- Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Melbourne, Victoria, Australia
| | - M N Sillence
- Earth, Environmental and Biological Sciences School, Queensland University of Technology, Brisbane, Queensland, Australia.
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Rahnama S, Shariati S, Divsar F. Synthesis of Functionalized Magnetite Titanium Dioxide Nanocomposite for Removal of Acid Fuchsine Dye. Comb Chem High Throughput Screen 2018; 21:583-593. [PMID: 30338734 DOI: 10.2174/1386207321666181019111211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 09/20/2018] [Accepted: 10/05/2018] [Indexed: 11/22/2022]
Abstract
OBJECTIVE In this research, a novel magnetite titanium dioxide nanocomposite functionalized by amine groups (Fe3O4@SiO2@TiO2-NH2) was synthesized and its ability for efficient removal of Acid Fuchsine as an anionic dye from aqueous solutions was investigated. METHOD The core-shell structure of Fe3O4@SiO2@TiO2 was prepared using Fe3O4 as magnetic core, tetra ethyl orthosilicate as silica and tetra butyl titanate as titanium source for shell. The synthesized nanocomposites (particle size lower than 44 nm) were characterized by FT-IR, XRD, DRS, SEM and TGA instruments. The various experimental parameters affecting dye removal efficiency were investigated and optimized using Taguchi fractional factorial design. RESULTS The synthesized adsorbent showed the highest removal efficiency of Acid Fuchsine (99 %) at pH= 3.5, without salt addition and during stirring at contact times less than 10 minutes. The study of kinetic models at two concentration levels showed the fast dye sorption on the surface of proposed nanocomposites with pseudo second order kinetic model (R2=1). Also, the fitting of Acid Fuchsine sorption data to Freundlich, Langmuir and Temkin isotherms suggested that Freundlich model gave a better fitting than other models (R2=0.9936, n=2). CONCLUSION Good chemical stability, excellent magnetic properties, very fast adsorption kinetics and high removal efficiency make the synthesized nanocomposite as a proper recoverable sorbent for removal of Acid Fuchsine dye from wastewaters.
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Affiliation(s)
- Sara Rahnama
- Department of Chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Shahab Shariati
- Department of Chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Faten Divsar
- Department of Chemistry, Payame Noor University (PNU), Tehran, Iran
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