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Payandehpeyman J, Parvini N, Moradi K, Hashemian N. Design and finite element modeling of two-dimensional nanomechanical biosensors for SARS-CoV-2 detection. Diam Relat Mater 2022; 128:109263. [PMID: 35891677 PMCID: PMC9303063 DOI: 10.1016/j.diamond.2022.109263] [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] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 07/09/2022] [Accepted: 07/17/2022] [Indexed: 06/15/2023]
Abstract
SARS-CoV-2 is the causative agent of COVID-19 disease. The development of different variants has increased the prevalence, pathogenicity, and mortality of the SARS-CoV-2. Prompt diagnosis and timely initiation of therapy can undoubtedly minimize the damage caused by this virus. In this study, a wide range of emerging single layer two-dimensional materials (SL2DMs), including graphene, grapheme oxide (GO), reduced graphene oxide (rGO), hexagonal boron nitride (h-BN), Ti3C2Tx MXene, and MoS2that can be used to fabricate highly sensitive biosensors, are analyzed using the finite element method based on antigen-antibody interaction. Important design parameters including sensor size, sensor aspect ratio, number of viruses, and applying in-plane strain on sensor performance are analyzed using frequency shift technique. In the following, an analytical relationship that can predict the limit of detection (LOD) according to the above parameters is proposed. The results show that all the above materials have a good performance in detecting viruses in the sample range of 10-100 viruses. This range can be reduced significantly by applying strains of less than 0.1. Also, applying strain increases shift frequency index by 2 to 3 times, which is a significant result. The maximum and minimum sensor performance are obtained for GO and Ti3C2Tx, respectively. The results of this paper can be used to build a new generation of two-dimensional biosensors for rapid detection of COVID-19 and other viruses.
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Affiliation(s)
- J Payandehpeyman
- Department of Mechanical Engineering, Hamedan University of Technology, Hamedan, Iran
| | - N Parvini
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - K Moradi
- Department of Mechanical Engineering, Hamedan University of Technology, Hamedan, Iran
| | - N Hashemian
- Faculty of Biology and Center of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, Tehran, Iran
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Salimi M, Moradi K, Barneh F, Irian S, Amanzadeh A. COX-2 inhibitor derivatives reduce MDA-MB-231 invasiveness caused by mesenchymal stem cells. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)61408-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Alibakhshi R, Moradi K, Mohebbi Z, Ghadiri K. Mutation analysis of PAH gene in patients with PKU in western Iran and its association with polymorphisms: identification of four novel mutations. Metab Brain Dis 2014; 29:131-8. [PMID: 24048906 DOI: 10.1007/s11011-013-9432-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2013] [Accepted: 08/21/2013] [Indexed: 10/26/2022]
Abstract
Phenylketonuria (PKU) is an autosomal recessive disorder characterized by a mutation in the phenylalanine hydroxylase (PAH) gene. Untreated PKU can lead to mental retardation, seizures, and other serious medical problems. This study was designed to investigate the status of molecular defects in the PAH gene and their association with polymorphisms in Kurdish patients with PKU in the Kermanshah province, western Iran. The study was conducted on 27 unrelated patients with PKU over a 2-year period (from 2010 to 2012). All 13 exons plus exon-intron boundaries of the PAH gene were analyzed and we identified 15 different mutations, including two novel mutations, in 51 of the 54 mutant alleles (diagnostic efficiency of 94.4 %). IVS4 + 1G > C (c.441 + 1G > C) and IVS7 - 5 T > C (c.843 - 5 T > C) are novel mutations that have not been reported in the academic literature or the PAH locus database ( http://www.pahdb.mcgill.ca ); therefore, they may be specific to the Kurdish population. IVS2 + 5G > C and IVS9 + 5G > A were the two most prevalent mutations in our sample, with frequencies of 26 % and 17 %, respectively. The second most common mutations were p.R261X, IVS10 - 11G > A, p.K363 > Nfs and IVS7 - 5 T > C, with each showing a relative frequency of 7.4 %. All other detected mutations, including p.F55 > Lfs, p.R176X, p.R243Q, p.V230I, p.R243X, p.R261Q, IVS8 - 7A > G and p.E390G had frequencies of less than 4 %. The present study showed that there is a distinct difference in the characteristics of PAH mutations between the Kermanshah province and other parts of Iran, suggesting that Kermanshah may have a unique population distribution of PAH gene mutations. Iran lies on the route of major ancient movements of the Caucasian people toward the Mediterranean basin, and Kermanshah has previously been called the gateway to Asia. Most of the mutations identified in this study are common in the Mediterranean region. Therefore, our findings are consistent with the historical and geographical links between the Iranian population and the populations of Mediterranean region.
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Affiliation(s)
- Reza Alibakhshi
- Department of Biochemistry, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran,
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Moradi K, Alibakhshi R, Khatami S. The proportion of tetrahydrobiopterin deficiency and PAH gene deficiency variants among cases with hyperphenyalaninemia in Western Iran. Indian J Hum Genet 2014; 19:454-8. [PMID: 24497712 PMCID: PMC3897142 DOI: 10.4103/0971-6866.124375] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Defects either in phenylalanine hydroxylase (PheOH) or in the production and recycling of its cofactor (tetrahydrobiopterin [BH4]) are the causes of primary hyperphenylalaninemia (HPA). The aim of our study was to investigate the current status of different variants of HPA Kurdish patients in Kermanshah province, Iran. MATERIALS AND METHODS From 33 cases enrolled in our study, 32 were identified as HPA patients. Reassessing of pre-treatment phenylalanine concentrations and the analysis of urinary pterins was done by high-performance liquid chromatography method. RESULTS A total of 30 patients showed PAH deficiency and two patients were diagnosed with BH4 deficiency (BH4/HPA ratio = 6.25%). Both of these two BH4-deficient patients were assigned to severe variant of dihydropteridine reductase (DHPR) deficiency. More than 75% of patients with PAH deficiency classified as classic phenylketonuria (PKU) according their levels of pre-treatment phenylalanine concentrations. CONCLUSION Based on the performed study, we think that the frequency of milder forms of PKU is higher than those was estimated before and/or our findings here. Furthermore, the frequency of DHPR deficiency seems to be relatively high in our province. Since the clinical symptoms of DHPR deficiency are confusingly similar to that of classic PKU and its prognosis are much worse than classical PKU and cannot be solely treated with the PKU regime, our pilot study support that it is crucial to set up screening for BH4 deficiency, along with PAH deficiency, among all HPA patients diagnosed with HPA.
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Affiliation(s)
- Keyvan Moradi
- Department of Genetics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Reza Alibakhshi
- Department of Biochemistry, School of Medicine, Kermanshah, Iran ; Nano Drug Delivery Research Centre, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Shohreh Khatami
- Department of Biochemistry, Pasteur Institute of Iran, Tehran, Iran
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Moradi K, Alibakhshi R, Ghadiri K, Khatami SR, Galehdari H. Molecular analysis of exons 6 and 7 of phenylalanine hydroxylase gene mutations in Phenylketonuria patients in Western Iran. Indian J Hum Genet 2013; 18:290-3. [PMID: 23716935 PMCID: PMC3656516 DOI: 10.4103/0971-6866.107978] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND: Phenylketonuria (PKU) is an inborn error of amino acid metabolism that results from a deficiency of phenylalanine hydroxylase (PAH). According to PAH database, exons 6 and 7 and their flanking introns of PAH gene contain the greatest number of mutant alleles. Therefore, as a preliminary study, nucleotide sequence analysis of exons 6 and 7 of the PAH gene has been performed in 25 PKU patients whose ancestors lived in Kermanshah province of Iran. To date, there has been no mutation data describing the genotypes of the PKU disease in this Kurdish ethnic region background. MATERIALS AND METHODS: Twenty-five patients (aged between 2 and 23 years) participated in this study. The DNA fragments containing two exons of the PAH gene [6 and 7] and their exon-flanking intronic sequences were amplified and sequenced. RESULTS: The total of detected mutations were R261X (8%), R176X (4%), R243Q (4%), R243X (2%) and R261Q (2%), as they accounted for 20% of all mutant alleles in this study. The identified polymorphisms are: IVS5 -54 G > A (22%), Q232Q (8%) and V245V (4%). All of the detected mutations in this study are related to CpG dinucleotides in the PAH gene sequence. CONCLUSION: The frequency of R261X, the most common mutation in our study, in Iranian population is <5%. Furthermore, there is no report of detection of R176X and R243Q in Isfahan and Azeri Turkish populations. These findings confirm the common Mediterranean mutations in this local population, although with more or lower frequencies than those reported in other related studies in Iran. Therefore, it may be necessary to study the PAH gene mutations in other provinces of Iran separately.
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Affiliation(s)
- Keyvan Moradi
- Department of Genetics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
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Münzberg M, Perl M, Kopschina C, Schüttrumpf JP, Kubosch DC, Kühle J, Häne R, Kreutz M, Depeweg D, Moradi B, Moradi K. [Position Paper of the Youth Forum DGOU 2010 - part 1]. Z Orthop Unfall 2011; 149:7-11. [PMID: 21332044 DOI: 10.1055/s-0031-1274128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The aim of the "Youth Forum of the DGOU" during the Convention 2010 in Heidelberg was to place a statement concerning the professional politics in the field of Orthopaedic and Trauma Surgery. The emigration of young German physicians, the occupational image of the Physician Assistant and the quality of the German residency programs in Orthopaedic and Trauma Surgery we discussed as main topics. The main reason for young German physicians to go abroad is, besides better work conditions and less bureaucracy, the better structured education during residency. Therefore the "Youth Forum" generally supports the concept of the "physician assistant" as "a relief from non-physician duties rather than discussing the delegation of true physician duties". The "Youth Forum" is looking forward to collaborating on the improvement of the ongoing education of residents. In this regard, Orthopaedic and Trauma Surgery needs to become more attractive for young academics. We also support a uniform and nationwide curriculum, which guarantees a structured education to improve the theoretic, practical and academic skills of the future specialist in orthopaedic and trauma surgery. Additional surveys and interviews among the current generation of residents are needed to further specify the potential goals of such a curriculum. We would like to discuss the future of our speciality with our colleagues. Therefore different communication platforms including our website http://www.jf-dgou.de have been created.
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Affiliation(s)
- M Münzberg
- Universitätsklinikum Freiburg Department Orthopädie und Traumatologie
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Sadat Kiai SM, Elahi M, Adlparvar S, Shahhoseini E, Sheibani S, Ranjber akivaj H, Alhooie S, Safarien A, Farhangi S, Aghaei N, Amini S, Khalaj MM, Zirak AR, Dabirzadeh AA, Soleimani J, Torkzadeh F, Mousazadeh MM, Moradi K, Abdollahzadeh M, Talaei A, Zaeem AA, Moslehi A, Kashani A, Babazadeh AR, Bagiyan F, Ardestani M, Roozbahani A, Pourbeigi H, Tajik Ahmadi H, Ahmadifaghih MA, Mahlooji MS, Mortazavi BN, Zahedi F. Preliminary Results of IS Plasma Focus as a Breeder of Short-Lived Radioisotopes 12C(d,n)13N. J Fusion Energ 2010. [DOI: 10.1007/s10894-010-9357-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Pourmand G, Emamzadeh A, Moradi K, Taherimahmoudi M, Mehrsai A, Nikoobakht M. POD-04.04: Serum selenium level and prostate cancer: case-control study. Urology 2007. [DOI: 10.1016/j.urology.2007.06.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Pourmand G, Moradi K, Moosavi S, Abedi A, Fateh R, Salehinejad H, Emamzadeh A. MP-21.11. Urology 2006. [DOI: 10.1016/j.urology.2006.08.612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Essaddek A, Elgadi M, Mejdoubi E, Elansari LL, Moradi K, Karroua M. Investigation by infrared absorption spectroscopy into the chemical mechanisms of the wet process synthesis of some calcium phosphates. ACTA ACUST UNITED AC 2005. [DOI: 10.1051/jp4:2005123041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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