1
|
Luo C, Yao W, Zhang H, Jia M, Lim CK, Hu W. Shedding light on imaging safety: Decoding the origin of photocytotoxicity in RhB-assisted fluorescence imaging. J Biophotonics 2024:e202400049. [PMID: 38634340 DOI: 10.1002/jbio.202400049] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 03/26/2024] [Accepted: 04/02/2024] [Indexed: 04/19/2024]
Abstract
Photocytotoxicity represents a significant limitation in the application of dye-assisted fluorescence imaging (FI), often resulting in undesirable cellular damage or even cell death, thereby restricting their practical utility. The prevalence of Rhodamine B (RhB) in FI underscores the importance of elucidating its photocytotoxicity effects to minimize photodamage. This study identifies the primary cause of photocytotoxicity stems from the generation of cytotoxic singlet oxygen in RhB, utilizing femtosecond transient absorption spectroscopy coupled with quantum chemical calculations. The Laser power-dependent cellular viability reveals a threshold at about 50 mW cm-2, surpassing which produces pronounced photocytotoxicity in vitro and in vivo. Notably, this threshold significantly falls below the safety limits (<200 mW cm-2) for laser use in health care, implying a huge risk of photodamage. This study provides valuable insights into the photocytotoxicity and offers essential guidelines for developing safer imaging protocols.
Collapse
Affiliation(s)
- Chaoqun Luo
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), and Ningbo Institute of Northwestern Polytechnical University, Northwestern Polytechnical University, Xi'an, China
| | - Weiyun Yao
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), and Ningbo Institute of Northwestern Polytechnical University, Northwestern Polytechnical University, Xi'an, China
| | - Haolin Zhang
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), and Ningbo Institute of Northwestern Polytechnical University, Northwestern Polytechnical University, Xi'an, China
| | - Mingxuan Jia
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), and Ningbo Institute of Northwestern Polytechnical University, Northwestern Polytechnical University, Xi'an, China
| | - Chang-Keun Lim
- School of Engineering and Digital Sciences, Department of Chemical and Materials Engineering, Nazarbayev University, Astana, Kazakhstan
| | - Wenbo Hu
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), and Ningbo Institute of Northwestern Polytechnical University, Northwestern Polytechnical University, Xi'an, China
| |
Collapse
|
2
|
Bolatov A, Yessenbayeva A, Yazici A. GLULA: Linear attention-based model for efficient human activity recognition from wearable sensors. Wearable Technol 2024; 5:e10. [PMID: 38617469 PMCID: PMC11016367 DOI: 10.1017/wtc.2024.5] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 01/24/2024] [Accepted: 03/10/2024] [Indexed: 04/16/2024]
Abstract
Body-worn sensor data is used in monitoring patient activity during rehabilitation and also can be extended to controlling rehabilitation devices based on the activity of the person. The primary focus of research has been on effectively capturing the spatiotemporal dependencies in the data collected by these sensors and efficiently classifying human activities. With the increasing complexity and size of models, there is a growing emphasis on optimizing their efficiency in terms of memory usage and inference time for real-time usage and mobile computers. While hybrid models combining convolutional and recurrent neural networks have shown strong performance compared to traditional approaches, self-attention-based networks have demonstrated even superior results. However, instead of relying on the same transformer architecture, there is an opportunity to develop a novel framework that incorporates recent advancements to enhance speed and memory efficiency, specifically tailored for human activity recognition (HAR) tasks. In line with this approach, we present GLULA, a unique architecture for HAR. GLULA combines gated convolutional networks, branched convolutions, and linear self-attention to achieve efficient and powerful solutions. To enhance the performance of our proposed architecture, we employed manifold mixup as an augmentation variant which proved beneficial in limited data settings. Extensive experiments were conducted on five benchmark datasets: PAMAP2, SKODA, OPPORTUNITY, DAPHNET, and USC-HAD. Our findings demonstrate that GLULA outperforms recent models in the literature on the latter four datasets but also exhibits the lowest parameter count and close to the fastest inference time among state-of-the-art models.
Collapse
Affiliation(s)
- Aldiyar Bolatov
- Department of Computer Science, Nazarbayev University, Astana, Kazakhstan
| | | | - Adnan Yazici
- Department of Computer Science, Nazarbayev University, Astana, Kazakhstan
| |
Collapse
|
3
|
Abishev R, Satyanaga A, Pernebekova G, Rahardjo H, Zhai Q, Shon CS, Moon SW, Kim J. Stability of soil slope in Almaty covered with steel slag under the effect of rainfall. Sci Rep 2024; 14:7711. [PMID: 38565925 DOI: 10.1038/s41598-024-58364-5] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Accepted: 03/28/2024] [Indexed: 04/04/2024] Open
Abstract
The issue of rainfall-induced slope failure has attracted more attention from geotechnical engineers as a consequence of global warming. Current cumulative waste disposal has generated scientific interest in the utilization of waste materials in geotechnical design for climate change adaptation measures. Taking into consideration the effect of slope height and angle, steel slag-a waste product derived from the production of steel-was investigated as a slope cover against rainfall. To assess the stability of the slope and the infiltration of water into the soil, numerical analyses were conducted using both SEEP/W and SLOPE/W software in conjunction with rainfall conditions. Based on the findings, it can be concluded that increasing the slope's elevation and inclination will have an adverse effect on its safety factor. Steel slag can nevertheless be utilized for minimizing rainwater infiltration into the slope, as indicated by the pore-water pressure variations and graphs of the safety factor versus time. For a 20-m slope height, steel slag slopes have demonstrated a lower factor of safety difference in comparison to the initial slope without remediation. Regardless of slope angle and slope height, the safety factor reduces marginally during rainfall.
Collapse
Affiliation(s)
- Rezat Abishev
- Department of Civil and Environmental Enginering, School of Engineering and Digital Sciences, Nazarbayev University, 53 Kabanbay Batyr Ave, 010000, Astana, Kazakhstan
| | - Alfrendo Satyanaga
- Department of Civil and Environmental Enginering, School of Engineering and Digital Sciences, Nazarbayev University, 53 Kabanbay Batyr Ave, 010000, Astana, Kazakhstan.
| | - Gulnur Pernebekova
- Department of Civil and Environmental Enginering, School of Engineering and Digital Sciences, Nazarbayev University, 53 Kabanbay Batyr Ave, 010000, Astana, Kazakhstan
| | - Harianto Rahardjo
- School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, Singapore
| | - Qian Zhai
- Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, School of Civil Engineering, Southeast University, Nanjing, 210096, China
| | - Chang-Seon Shon
- Department of Civil and Environmental Enginering, School of Engineering and Digital Sciences, Nazarbayev University, 53 Kabanbay Batyr Ave, 010000, Astana, Kazakhstan
| | - Sung-Woo Moon
- Department of Civil and Environmental Enginering, School of Engineering and Digital Sciences, Nazarbayev University, 53 Kabanbay Batyr Ave, 010000, Astana, Kazakhstan
| | - Jong Kim
- Department of Civil and Environmental Enginering, School of Engineering and Digital Sciences, Nazarbayev University, 53 Kabanbay Batyr Ave, 010000, Astana, Kazakhstan
| |
Collapse
|
4
|
Aljofan M, Gaipov A. Drug discovery and development: the role of artificial intelligence in drug repurposing. Future Med Chem 2024; 16:583-585. [PMID: 38426289 DOI: 10.4155/fmc-2024-0048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024] Open
Affiliation(s)
- Mohamad Aljofan
- Department of Biomedical Sciences, School of Medicine, Nazarbayev University, Astana, 010000, Kazakhstan
- Drug Discovery & Development Laboratory, Center for Life Sciences, National Laboratory, Astana, 010000, Kazakhstan
| | - Abduzhappar Gaipov
- Department of Medicine, School of Medicine, Nazarbayev University, Astana, 010000, Kazakhstan
| |
Collapse
|
5
|
Umbetkulova S, Kanderzhanova A, Foster F, Stolyarova V, Cobb-Zygadlo D. Mental Health Changes in Healthcare Workers During COVID-19 Pandemic: A Systematic Review of Longitudinal Studies. Eval Health Prof 2024; 47:11-20. [PMID: 37143216 PMCID: PMC10160822 DOI: 10.1177/01632787231165076] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [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] [Indexed: 05/06/2023]
Abstract
This study provides an overview of research findings on long-term effects on healthcare workers mental health and factors associated with positive or negative changes. Medline and PubMed databases were searched for observational longitudinal studies and 18 papers were included in the review (PROSPERO: CRD42021260307). 12 articles indicated negative changes over time and six studies revealed a positive trend in a variety of mental health outcomes (anxiety, depression, insomnia, and others). Female sex, younger age, nursing occupation, frontline work, longer working hours and concerns about contracting COVID-19 were identified to be associated with negative changes. Conversely, a supportive environment, access to psychological resources, provision of sufficient personal protective equipment and availability of COVID-19 tests were linked to positive changes. Therefore, our findings can assist governmental and institutional authorities with effective interventions to improve psychological care for healthcare workers.
Collapse
Affiliation(s)
| | | | - Faye Foster
- Nazarbayev UniversitySchool of Medicine, Kazakhstan
| | | | | |
Collapse
|
6
|
Begimbetova D, Burska AN, Baltabekova A, Kussainova A, Kukanova A, Fazyl F, Ibragimova M, Manekenova K, Makishev A, Bersimbaev RI, Sarbassov DD. The Vitamin C Enantiomers Possess a Comparable Potency in the Induction of Oxidative Stress in Cancer Cells but Differ in Their Toxicity. Int J Mol Sci 2024; 25:2531. [PMID: 38473779 DOI: 10.3390/ijms25052531] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 02/07/2024] [Accepted: 02/10/2024] [Indexed: 03/14/2024] Open
Abstract
The use of vitamin C (VC) in high doses demonstrates a potent tumor suppressive effect by mediating a glucose-dependent oxidative stress in Kirsten rat sarcoma (KRAS) mutant cancer cells. VC with arsenic trioxide (ATO) is a promising drug combination that might lead to the development of effective cancer therapeutics. Considering that a tumor suppressive effect of VC requires its high-dose administration, it is of interest to examine the toxicity of two enantiomers of VC (enantiomer d-optical isomer D-VC and natural l-optical isomer L-VC) in vitro and in vivo. We show that the combinations of L-VC with ATO and D-VC with ATO induced a similar cytotoxic oxidative stress in KrasG12D-expressing mutant cancer cells as indicated by a substantial increase in reactive oxidative species (ROS) production and depolarization of mitochondria. To examine the L-VC and D-VC toxicity effects, we administered high doses of D-VC and L-VC to CD1 mice and carried out an evaluation of their toxic effects. The daily injections of L-VC at a dose of 9.2 g/kg for 18 days were lethal to mice, while 80% of mice remained alive following the similar high-dose administration of D-VC. Following the drug injection courses and histopathological studies, we determined that a natural form of VC (L-VC) is more harmful and toxic to mice when compared to the effects caused by the similar doses of D-VC. Thus, our study indicates that the two enantiomers of VC have a similar potency in the induction of oxidative stress in cancer cells, but D-VC has a distinctive lower toxicity in mice compared to L-VC. While the mechanism of a distinctive toxicity between D-VC and L-VC is yet to be defined, our finding marks D-VC as a more preferable option compared to its natural enantiomer L-VC in clinical settings.
Collapse
Affiliation(s)
- Dinara Begimbetova
- National Laboratory Astana, Nazarbayev University, Astana 010000, Kazakhstan
| | - Agata N Burska
- National Laboratory Astana, Nazarbayev University, Astana 010000, Kazakhstan
- School of Medicine, Nazarbayev University, Astana 010000, Kazakhstan
| | | | - Assiya Kussainova
- National Laboratory Astana, Nazarbayev University, Astana 010000, Kazakhstan
- Department of Experimental Medicine, University of Genoa, 16132 Genoa, Italy
- Department of General Biology and Genomics, Institute of Cell Biology and Biotechnology, L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan
| | - Assiya Kukanova
- National Laboratory Astana, Nazarbayev University, Astana 010000, Kazakhstan
- Department of Oncology, Astana Medical University, Astana 010000, Kazakhstan
| | - Fatima Fazyl
- National Laboratory Astana, Nazarbayev University, Astana 010000, Kazakhstan
| | - Milana Ibragimova
- National Laboratory Astana, Nazarbayev University, Astana 010000, Kazakhstan
| | - Kenzhekyz Manekenova
- Department of Pathological Anatomy, Astana Medical University, Astana 010000, Kazakhstan
| | - Abay Makishev
- Department of Oncology, Astana Medical University, Astana 010000, Kazakhstan
| | - Rakhmetkazhi I Bersimbaev
- Department of General Biology and Genomics, Institute of Cell Biology and Biotechnology, L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan
| | - Dos D Sarbassov
- National Laboratory Astana, Nazarbayev University, Astana 010000, Kazakhstan
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Astana 010000, Kazakhstan
| |
Collapse
|
7
|
Abdukhakimova D, Ibrayeva M, Dossybayeva K, Turganbekova A, Zhanzakova Z, Abdrakhmanova S, McLoone P, Poddighe D. Total serum IgA levels and HLA-DQB1*02:01 allelic status. Immunol Res 2024; 72:167-173. [PMID: 37725324 DOI: 10.1007/s12026-023-09420-1] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 08/28/2023] [Indexed: 09/21/2023]
Abstract
Immunoglobulin A Deficiency (IgAD) is the most common primary immunodeficiency and is significantly associated with Celiac Disease (CD), which recognizes a specific background of human leukocyte antigens (HLA) predisposition (including HLA-DQB1*02:01 allele). A number of studies investigated the role of HLA in IgAD etiopathogenesis: HLA-DQB1*02 alleles are included in the main haplotypes linked to this primary immunodeficiency. In this preliminary study, we investigated the potential impact of HLA-DQB1*02:01 allelic status on total serum IgA levels: 108 serum samples from the bone marrow donors' registry were analyzed for total IgA concentration with respect to the HLA-DQB1*02:01 status. Although total serum IgA levels between HLA-DQB1*02:01 carriers and HLA-DQB1*02:01 negative donors were not different, we observed a statistically significant difference (p=0.0118) in total serum IgA levels among donors with low IgA concentration (<80mg/dL) in the sub-analysis between HLA-DQB1*02:01 positive group (including both homozygous and heterozygous carriers) compared to HLA-DQB1*02:01 negative donors. Our results might suggest a role of HLA-DQB1*02:01 allelic variant in the determination of total serum IgA levels, at least in patients affected with IgA deficiency and/or otherwise predisposed to it; however, larger and more standardized studies are needed to confirm this speculation.
Collapse
Affiliation(s)
| | - Malika Ibrayeva
- School of Medicine, Nazarbayev University, Astana, 010000, Kazakhstan
| | | | - Aida Turganbekova
- Research and Production Center of Transfusion Medicine, Ministry of Health of the Republic of Kazakhstan, Astana, Kazakhstan
| | - Zhuldyz Zhanzakova
- Research and Production Center of Transfusion Medicine, Ministry of Health of the Republic of Kazakhstan, Astana, Kazakhstan
| | - Saniya Abdrakhmanova
- Research and Production Center of Transfusion Medicine, Ministry of Health of the Republic of Kazakhstan, Astana, Kazakhstan
| | - Pauline McLoone
- School of Medicine, Nazarbayev University, Astana, 010000, Kazakhstan
| | - Dimitri Poddighe
- School of Medicine, Nazarbayev University, Astana, 010000, Kazakhstan.
- Clinical Academic Department of Pediatrics, National Research Center for Maternal and Child Health, University Medical Center, Astana, 010000, Kazakhstan.
| |
Collapse
|
8
|
Viderman D, Nabidollayeva F, Aubakirova M, Sadir N, Tapinova K, Tankacheyev R, Abdildin YG. The Impact of Transcutaneous Electrical Nerve Stimulation (TENS) on Acute Pain and Other Postoperative Outcomes: A Systematic Review with Meta-Analysis. J Clin Med 2024; 13:427. [PMID: 38256561 PMCID: PMC10816585 DOI: 10.3390/jcm13020427] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 12/30/2023] [Accepted: 01/05/2024] [Indexed: 01/24/2024] Open
Abstract
This study aimed to investigate the efficacy and safety of transcutaneous electrical nerve stimulation (TENS) in postoperative acute pain control. PubMed, Scopus, and Cochrane Library were searched on 1-8 December 2022, for randomized controlled trials on the analgesic effects of TENS. The outcomes were pain intensity and opioid use (primary), and postoperative (PO) adverse events, blood pressure, and the duration of hospital stay (secondary); PROSPERO CRD42022333335. A total of 40 articles were included in the meta-analysis. Pain intensity at rest and during coughing for all types of surgeries combined was lower in the TENS group (standardized mean difference (SMD) = -0.51 [-0.61, -0.41], p < 0.00001, 29 studies, and -1.28 [-2.46, -0.09], p-value = 0.03, six studies, respectively). There was a statistically significant decrease in morphine requirements, as well as in the incidence of postoperative nausea and vomiting, dizziness, and pruritus. There was no difference between the groups in postoperative pain intensity during walking, in blood pressure, and only a borderline difference in the length of hospital stay. The subgroup analysis by surgery type did not show significant differences between the groups in pain severity at rest. Thus, TENS has a potential for pain control and postoperative recovery outcomes.
Collapse
Affiliation(s)
- Dmitriy Viderman
- Department of Surgery, School of Medicine, Nazarbayev University, Astana 010000, Kazakhstan; (M.A.); (N.S.); (K.T.)
- Department of Anesthesiology, Intensive Care and Pain Medicine, National Research Oncology Center, Astana 010000, Kazakhstan
| | - Fatima Nabidollayeva
- Department of Mechanical and Aerospace Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan; (F.N.); (Y.G.A.)
| | - Mina Aubakirova
- Department of Surgery, School of Medicine, Nazarbayev University, Astana 010000, Kazakhstan; (M.A.); (N.S.); (K.T.)
| | - Nurzhamal Sadir
- Department of Surgery, School of Medicine, Nazarbayev University, Astana 010000, Kazakhstan; (M.A.); (N.S.); (K.T.)
| | - Karina Tapinova
- Department of Surgery, School of Medicine, Nazarbayev University, Astana 010000, Kazakhstan; (M.A.); (N.S.); (K.T.)
| | - Ramil Tankacheyev
- Department of Minimally Invasive Surgery, National Research Neurosurgery Center, Astana 010000, Kazakhstan;
| | - Yerkin G. Abdildin
- Department of Mechanical and Aerospace Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan; (F.N.); (Y.G.A.)
| |
Collapse
|
9
|
Poddighe D, Dossybayeva K, Kozhakhmetov S, Rozenson R, Assylbekova M. Double-Negative T (DNT) Cells in Patients with Systemic Lupus Erythematosus. Biomedicines 2024; 12:166. [PMID: 38255272 PMCID: PMC10812956 DOI: 10.3390/biomedicines12010166] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/06/2024] [Accepted: 01/08/2024] [Indexed: 01/24/2024] Open
Abstract
Double-negative T (DNT) cells are a rare and unconventional T-lymphocyte subpopulation lacking both CD4 and CD8 markers. Their immunopathological roles and clinical relevance have yet to be elucidated. Beyond autoimmune lymphoproliferative syndrome (ALPS), these cells may also play a role in rheumatic disorders, including systemic lupus erythematosus (SLE); indeed, these two diseases share several autoimmune manifestations (including nephritis). Moreover, one of the main experimental murine models used to investigate lupus, namely the MRL/lpr mouse, is characterized by an expansion of DNT cells, which can support the production of pathogenic autoantibodies and/or modulate the immune response in this context. However, lupus murine models are not completely consistent with their human SLE counterpart, of course. In this mini review, we summarize and analyze the most relevant clinical studies investigating the DNT cell population in SLE patients. Overall, based on the present literature review and analysis, DNT cell homeostasis seems to be altered in patients with SLE. Indeed, most of the available clinical studies (which include both adults and children) reported an increased DNT cell percentage in SLE patients, especially during the active phases, even though no clear correlation with disease activity and/or inflammatory parameters has been clearly established. Well-designed, standardized, and longitudinal clinical studies focused on DNT cell population are needed, in order to further elucidate the actual contribution of these cells in SLE pathogenesis and their interactions with other immune cells (also implicated and/or altered in SLE, such as basophils), and clarify whether their expansion and/or immunophenotypic aspects may have any immunopathological relevance (and, then, represent potential disease markers and, in perspective, even therapeutic targets) or are just an unspecific epiphenomenon of autoimmunity.
Collapse
Affiliation(s)
- Dimitri Poddighe
- School of Medicine, Nazarbayev University, Astana 010000, Kazakhstan;
- Clinical Academic Department of Pediatrics, National Research Center for Maternal and Child Health, University Medical Center, Astana 010000, Kazakhstan;
| | | | - Samat Kozhakhmetov
- Center for Life Science, National Laboratory Astana, Astana 010000, Kazakhstan;
| | - Rafail Rozenson
- Department of Children’s Diseases n.1, Astana Medical University, Astana 010000, Kazakhstan;
| | - Maykesh Assylbekova
- Clinical Academic Department of Pediatrics, National Research Center for Maternal and Child Health, University Medical Center, Astana 010000, Kazakhstan;
| |
Collapse
|
10
|
Mukhtarkhanov M, Shehab E, Ali MH. Experimental Study on Warpage Phenomenon of Wax Parts Manufactured by Fused Filament Fabrication. Polymers (Basel) 2024; 16:208. [PMID: 38257007 PMCID: PMC10819220 DOI: 10.3390/polym16020208] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 12/28/2023] [Accepted: 01/09/2024] [Indexed: 01/24/2024] Open
Abstract
Warpage is one of the prominent issues in Fused Filament Fabrication. The cause of this is the rapid cooling of the polymer during extrusion. The residual thermal stresses accumulated within the print part result in a shape distortion and subsequent detachment of the object from the print bed. In this study, both experimental and numerical approaches were used to identify the stresses due to thermal shrinking that occurs in soft polymers such as wax. A temperature sweep test was performed using a rotational rheometer to measure the magnitude of axial forces that are generated due to the thermal shrinking of a thin layer of 3D printable wax. The thermal stresses responsible for warpage were computed analytically and using the FEA. It was found that due to thermal processes, the stress magnitude can reach a value of 1.17 MPa. This value is enough to cause the plastic deformation in the wax part having a thin elongated shape. In addition, Taguchi's robust design has identified two major FFF parameters that impact the warpage in amorphous soft polymers. They are the printing speed and the print bed temperature. To achieve a low level of warpage, it is important to make sure that the layer deposition occurs at medium speeds and the print bed temperature is moderately high according to the findings of this study.
Collapse
Affiliation(s)
| | | | - Md. Hazrat Ali
- Department of Mechanical and Aerospace Engineering, SEDS, Nazarbayev University, Astana 010000, Kazakhstan; (M.M.); (E.S.)
| |
Collapse
|
11
|
Akhtanova G, Yerlanuly Y, Parkhomenko HP, Solovan MV, Mostovyi AI, Nurmukhanbetova AK, Kireyev AV, Danko IV, Oreshkin PA, Zholdybayev TK, Janseitov DM, Ramazanov TS, Brus VV. Electron Irradiation-Induced Degradation of TiN Thin Films on Quartz and Sapphire Substrates. ACS Omega 2024; 9:925-933. [PMID: 38222564 PMCID: PMC10785614 DOI: 10.1021/acsomega.3c07053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 10/30/2023] [Accepted: 12/01/2023] [Indexed: 01/16/2024]
Abstract
In this contribution, we investigated the properties of magnetron-sputtered TiN thin films on sapphire and quartz substrates before and after 5 MeV electron irradiation with a fluence of 7 × 1013 e/cm2. Structural, morphological, optical, and electrical properties were analyzed to observe the impact of electron irradiation on the TiN thin films. The results showed improved electrical properties of the TiN thin films due to high-energy electron irradiation, resulting in increased specific conductivity compared to the as-deposited thin films on both sapphire and quartz substrates. The structural features of the TiN thin films on the sapphire substrate transformed from polycrystalline to amorphous, while the TiN thin films deposited on the quartz substrate remained unchanged. Chemical state analysis indicated changes in the metallic bonding between Ti and N in the deposited TiN on the sapphire substrate, while TiN deposited on the quartz substrate retained its Ti-N bonding. This study provides insights into the effects of electron irradiation on TiN thin films, emphasizing the importance of investigating radiation resistance for the reliable operation of optoelectronic devices and photovoltaic systems in extreme ionizing radiation environments.
Collapse
Affiliation(s)
- Gulnur Akhtanova
- Department
of Physics, Nazarbayev University, Astana 010000, Kazakhstan
| | - Yerassyl Yerlanuly
- Al-Farabi
Kazakh National University, Almaty 050040, Kazakhstan
- Kazakh-British
Technical University, Almaty 050000, Kazakhstan
| | | | | | - Andrii I. Mostovyi
- Department
of Physics, Nazarbayev University, Astana 010000, Kazakhstan
- Department
of Electronics and Energy Engineering, Yuriy
Fedkovych Chernivtsi National University, Chernivtsi 58012, Ukraine
| | | | | | - Igor V. Danko
- Institute
of Nuclear Physics, Almaty 050032, Kazakhstan
| | | | - Timur K. Zholdybayev
- Al-Farabi
Kazakh National University, Almaty 050040, Kazakhstan
- Institute
of Nuclear Physics, Almaty 050032, Kazakhstan
| | - Daniyar M. Janseitov
- Al-Farabi
Kazakh National University, Almaty 050040, Kazakhstan
- Institute
of Nuclear Physics, Almaty 050032, Kazakhstan
| | | | - Viktor V. Brus
- Department
of Physics, Nazarbayev University, Astana 010000, Kazakhstan
| |
Collapse
|
12
|
Zhuniskenov Y, Sabirova A, Serikov G, Abbas AH, Pourafshary P. Impact of the Naturally Driven Surfactant in EOR Application: Experimental, Microscopic, and Numerical Analyses. ACS Omega 2024; 9:1327-1340. [PMID: 38222572 PMCID: PMC10785280 DOI: 10.1021/acsomega.3c07519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 12/07/2023] [Accepted: 12/12/2023] [Indexed: 01/16/2024]
Abstract
While synthetic, conventional surfactants have a known negative environmental impact, their high cost poses a significant challenge. In contrast, naturally extracted surfactants are cheaper and are readily available. The applicability of natural surfactants depends on the saponin concentration, extraction, and synthesis methods. Certain parameters, such as their efficiency in obtaining the required interfacial tension (IFT) values, salinity tolerance, and stability under reservoir conditions, must be examined. Kazakhstan produces a substantial quantity of flaxseed, and flaxseed oil is a good source of fatty acids that can be converted to natural surfactants. Therefore, the work aims to identify the potential of the natural-flaxseed oil surfactant. The experimental study evaluated the synthesized surfactant, effective concentration, salinity's effect, interfacial tension, rheology, and oil recovery concerns in vugs limestone. A microscopic study was conducted to provide insight into the flow in the vugus matrix. At the same time, the numerical method was also employed to establish a potential recovery understanding. The Fourier spectrometer results proved the distinct presence of the triterpenoid. The critical micelle concentrations are 6 and 2.5 wt % for solution in 0 and seawater salinity, respectively. The IFT was reduced by 40-48% and is more effective in seawater solutions. The oil additional recovery was 39-50% after surfactants. The presence of a fractured vugus did not affect the success of the application. Despite the difficulty in modeling the system, the numerical results agree with the experiments and show only 7% differences in total recovery. The research offers novel natural surfactants that can be applied in offshore Kazakhstan.
Collapse
Affiliation(s)
- Yermukhan Zhuniskenov
- Department of Petroleum Engineering,
School of Mining and Geosciences, Nazarbayev
University, Astana 010000, Kazakhstan
| | - Aruzhan Sabirova
- Department of Petroleum Engineering,
School of Mining and Geosciences, Nazarbayev
University, Astana 010000, Kazakhstan
| | - Galymzhan Serikov
- Department of Petroleum Engineering,
School of Mining and Geosciences, Nazarbayev
University, Astana 010000, Kazakhstan
| | - Azza Hashim Abbas
- Department of Petroleum Engineering,
School of Mining and Geosciences, Nazarbayev
University, Astana 010000, Kazakhstan
| | - Peyman Pourafshary
- Department of Petroleum Engineering,
School of Mining and Geosciences, Nazarbayev
University, Astana 010000, Kazakhstan
| |
Collapse
|
13
|
Tsakalerou M, Perveen A, Ayapbergenov A, Rysbekova A. The role of environment on women's perception about their STEM studies: observations from a Global South country. Sci Rep 2024; 14:228. [PMID: 38168915 PMCID: PMC10762168 DOI: 10.1038/s41598-023-50571-w] [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: 09/24/2023] [Accepted: 12/21/2023] [Indexed: 01/05/2024] Open
Abstract
The growing global demand for STEM professionals is not being met by the supply of new graduates, a supply that is characterised by a significant lag in the percentage of women pursuing STEM studies. Interestingly enough, the percentage of female applicants entering STEM majors has been increasing yet only a minority of them pursue, or complete, engineering programs. Several studies for the developed world have identified several environmental factors responsible for this phenomenon. The scarcity of engineering professionals is a handicapping factor for development, even for the most advanced countries of the Global South. The objective of this exploratory study is to examine whether the environmental factors identified in the international literature are sufficient to explain the asymmetry in selecting an engineering or a natural sciences career among female undergraduates in an exemplary Global South country, Kazakhstan. To this purpose, a multifaceted survey was conducted among the female students pursuing STEM majors in the premier Kazakhstani university in the academic year 2021-2022. This study utilized a Likert Scale questionnaire, ordinal logistic regression, and factor analysis to explore factors affecting female students. Data reliability was confirmed through Confirmatory Factor Analysis (CFA). The factor and regression analysis of the results obtained demonstrates that there is no discernible difference between the observations in the literature and the situation in Kazakhstan.
Collapse
Affiliation(s)
- Mariza Tsakalerou
- School of Engineering and Digital Sciences, Nazarbayev University, Astana, Kazakhstan.
| | - Asma Perveen
- School of Engineering and Digital Sciences, Nazarbayev University, Astana, Kazakhstan
| | - Alibek Ayapbergenov
- School of Engineering and Digital Sciences, Nazarbayev University, Astana, Kazakhstan
| | | |
Collapse
|
14
|
Longinos SN, Hazlett R. Cryogenic fracturing using liquid nitrogen on granite at elevated temperatures: a case study for enhanced geothermal systems in Kazakhstan. Sci Rep 2024; 14:160. [PMID: 38168137 PMCID: PMC10761712 DOI: 10.1038/s41598-023-50223-z] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 12/16/2023] [Indexed: 01/05/2024] Open
Abstract
Cryogenic fracturing using liquid nitrogen (LN2) is a novel stimulation technology that enhances porosity, permeability, and rock-fluid contact area in subsurface formations targetted for geothermal energy extraction. In our experimental study, granite cores collected from the Zhylgyz region in South Kazakhstan were equilibrated at various elevated temperatures before treatments involving LN2 exposure time. Compression, Brazilian, and fracture toughness tests were performed on granite with starting temperatures ranging from 100 to 500 °C to quantify the impact of initial temperature on cryogenic fracturing and to compare with baseline geomechanical tests at 50 °C without LN2 exposure. The results show that LN2 cooling of hot granite induces mechanical rock failure and permeability enhancement. Moreover, the degree of thermo-fracturing augments with initial granite temperature, total freezing time, and number of freezing-thawing cycles. The peak load before failure of granite specimens, both in compression and Brazilian tests, reduces with the increased sample temperature difference and length of LN2 treatment. The fracture toughness of our semi-circular bend (SCB) LN2-treated specimens diminished with increasing temperature difference between granite and boiling point. In both experimental LN2 treatment processes, the specimens with an initial temperature of 500 °C before LN2 treatment formed many new fissures and extensions of pre-existing ones, showing that the plastic behavior is augmented. While cryo-fracturing experimental confirmation is recommended with site-specific samples in planning geothermal operations, these results in our work indicate a threshold downhole temperature, e.g., > 300 °C, for enhanced stimulation outcomes.
Collapse
Affiliation(s)
- Sotirios Nik Longinos
- Department of Petroleum Engineering, School of Mining and Geosciences, Nazarbayev University, Astana, Kazakhstan.
| | - Randy Hazlett
- Department of Petroleum Engineering, School of Mining and Geosciences, Nazarbayev University, Astana, Kazakhstan
| |
Collapse
|
15
|
Mergenbayeva S, Bekaliyev A, Junissov A, Begenova D, Pham TT, Poulopoulos SG. 4-Nitrophenol reduction and antibacterial activity of Ag-doped TiO 2 photocatalysts. Environ Sci Pollut Res Int 2024; 31:4640-4653. [PMID: 38105328 DOI: 10.1007/s11356-023-31492-7] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 12/07/2023] [Indexed: 12/19/2023]
Abstract
Water contamination by organic pollutants is a serious environmental problem. 4-Nitrophenol (4-NP) is a potentially harmful chemical, which is commonly present in industrial effluents and can severely damage human health. Photocatalytic reduction of hazardous 4-NP by nano-sized materials to produce 4-aminophenol (4-AP), which is a commercially valuable product, is a promising alternative as the process is framed within the circular economy. In this context, Ag-doped TiO2 (AT) catalysts were synthesized by liquid impregnation and reduction techniques, and their structure, morphology, elemental composition, textural, and light absorption properties were evaluated by XRD, Raman spectroscopy, SEM, TEM, EDS, BET, and DRS spectroscopy. AT catalysts exhibited an enhanced photocatalytic reduction of 4-NP into 4-aminophenol (4-AP) in the presence of NaBH4. Among the tested catalysts, AT21 prepared by a simple aqueous reduction method showed the highest activity reaching about 98% 4-NP reduction within 10 min. Antibacterial tests of these catalysts against Bacillus subtilis, Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa revealed that AT21 also exhibited the lowest minimum inhibitory concentration, suggesting that it has the strongest antibacterial activity. These findings suggest that AT21 catalyst with improved catalytic and antibacterial properties can potentially be utilized for the remediation of 4-NP-contaminated water environment.
Collapse
Affiliation(s)
- Saule Mergenbayeva
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana, 010000, Kazakhstan
| | - Akhmet Bekaliyev
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana, 010000, Kazakhstan
| | - Arslan Junissov
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana, 010000, Kazakhstan
| | - Dilnaz Begenova
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Astana, 010000, Kazakhstan
| | - Tri T Pham
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Astana, 010000, Kazakhstan
| | - Stavros G Poulopoulos
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana, 010000, Kazakhstan.
| |
Collapse
|
16
|
Poddighe D, Maulenkul T, Zhubanova G, Akhmaldtinova L, Dossybayeva K. Natural Killer T (NKT) Cells in Autoimmune Hepatitis: Current Evidence from Basic and Clinical Research. Cells 2023; 12:2854. [PMID: 38132174 PMCID: PMC10742140 DOI: 10.3390/cells12242854] [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: 10/15/2023] [Revised: 12/05/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023] Open
Abstract
Natural killer T (NKT) cells are unconventional T cells that are activated by glycolipid antigens. They can produce a variety of inflammatory and regulatory cytokines and, therefore, modulate multiple aspects of the immune response in different pathological settings, including autoimmunity. NKT cells have also been implicated in the immunopathogenesis of autoimmune hepatitis, and in this review we summarize and analyze the main studies investigating the involvement and/or homeostasis of NKT cells in this disease. In detail, the evidence from both basic and clinical research has been specifically analyzed. Even though the experimental murine models supported a relevant role of NKT cells in immune-mediated hepatic injury, very few studies specifically investigated NKT cell homeostasis in patients with autoimmune hepatitis; however, these initial studies reported some alterations of NKT cells in these patients, which may also correlate with the disease activity to some extent. Further clinical studies are needed to investigate the potential role and use of NKT cell analysis as a disease marker of clinical relevance, and to better understand the precise cellular and molecular mechanisms by which NKT cells contribute to the pathogenesis of autoimmune hepatitis.
Collapse
Affiliation(s)
- Dimitri Poddighe
- School of Medicine, Nazarbayev University, Kerei-Zhanibek Str. 5/1, Astana 010000, Kazakhstan
- Clinical Academic Department of Pediatrics, National Research Center for Maternal and Child Health, University Medical Center, Astana 010000, Kazakhstan
| | - Tilektes Maulenkul
- School of Medicine, Nazarbayev University, Kerei-Zhanibek Str. 5/1, Astana 010000, Kazakhstan
- Clinical Academic Department of Pediatrics, National Research Center for Maternal and Child Health, University Medical Center, Astana 010000, Kazakhstan
| | - Gulsamal Zhubanova
- School of Medicine, Nazarbayev University, Kerei-Zhanibek Str. 5/1, Astana 010000, Kazakhstan
| | - Lyudmila Akhmaldtinova
- School of Medicine, Nazarbayev University, Kerei-Zhanibek Str. 5/1, Astana 010000, Kazakhstan
| | - Kuanysh Dossybayeva
- School of Medicine, Nazarbayev University, Kerei-Zhanibek Str. 5/1, Astana 010000, Kazakhstan
| |
Collapse
|
17
|
Viderman D, Aubakirova M, Nabidollayeva F, Abdildin YG. The Analysis of Multiple Outcomes between General and Regional Anesthesia in Hip Fracture Surgery: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. J Clin Med 2023; 12:7513. [PMID: 38137582 PMCID: PMC10743918 DOI: 10.3390/jcm12247513] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/21/2023] [Accepted: 11/23/2023] [Indexed: 12/24/2023] Open
Abstract
Surgical interventions in hip fracture have been associated with multiple adverse events, including perioperative hypotension and mortality, making the choice of the anesthetic method for this procedure crucial. There is still no consensus on whether regional (RA) or general (GA) anesthesia should be used to maintain hemodynamic stability and more favorable outcomes. Therefore, this meta-analysis examines the differences between RA and GA groups in the incidence of mortality, intraoperative hypotension, and other intra- and postoperative complications. The comparison is essential given the rising global prevalence of hip fractures and the need to optimize anesthesia strategies for improved patient outcomes, particularly in an aging population. We followed PRISMA guidelines (PROSPERO #CRD42022320413). We conducted the search for studies published in English before March 2022 in PubMed, Google Scholar, and the Cochrane Library. We included RCTs that compared general and regional anesthesia in adult patients having hip fracture surgical interventions. The primary outcome was perioperative mortality. The secondary outcomes were peri- or postoperative complications and duration of hospital stay. We conducted a meta-analysis in RevMan (version 5.4). We examined the quality of the methodology with the Cochrane risk of bias 2 tool, while the quality of evidence was determined with GRADE. Fifteen studies with 4110 patients were included. Our findings revealed no significant difference between general and regional anesthesia in risk of perioperative mortality (RR = 1.42 [0.96, 2.10], p-value = 0.08), intraoperative complications, or duration of hospital length of stay. Our results suggest that regional anesthesia and general anesthesia have comparable safety and can be used as alternatives based on specific patient requirements.
Collapse
Affiliation(s)
- Dmitriy Viderman
- Department of Surgery, School of Medicine, Nazarbayev University, Astana 020000, Kazakhstan;
| | - Mina Aubakirova
- Department of Surgery, School of Medicine, Nazarbayev University, Astana 020000, Kazakhstan;
| | - Fatima Nabidollayeva
- School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan; (F.N.); (Y.G.A.)
| | - Yerkin G. Abdildin
- School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan; (F.N.); (Y.G.A.)
| |
Collapse
|
18
|
Purushothama C, Crape BL, Stolyarov V, Jaxybayeva A, la Fleur P, Olickal JJ. Preloaded combination nicotine replacement therapy for smoking cessation in Kazakhstan: A randomized controlled trial study protocol. PLoS One 2023; 18:e0292490. [PMID: 38011129 PMCID: PMC10681200 DOI: 10.1371/journal.pone.0292490] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 09/12/2023] [Indexed: 11/29/2023] Open
Abstract
BACKGROUND Tobacco use is a major cause of premature death and disease in Kazakhstan, with over 22,500 deaths per year. Although efforts have been made to control tobacco use, smoking-related deaths have continued to increase. One strategy to help smokers quit is to use nicotine replacement therapy (NRT), with combination NRT resulting in higher long-term quit rates than a single form of NRT. A study aims to determine the effectiveness of preloaded combination NRT on smoking cessation, the change in health-related quality of life due to smoking cessation, and explore treatment adherence perceptions. METHODS AND ANALYSIS The study will be conducted as a randomized, single-blind superiority trial, with 100 participants in each arm. The trial will be carried out at the National Research Cardiac Surgery Center, Astana, Kazakhstan, and will recruit current smokers aged 18 years and above with a motivation to quit. Participants will be randomly allocated to either the intervention group or the control group. The former will receive preloaded combination NRT, while the latter will receive fast-acting NRT alone. The primary outcome measure will be sustained abstinence from smoking after six months. Secondary outcome measures will include health-related quality of life and adherence to the treatment. DISCUSSION The study may gather further evidence that a combination NRT is more efficient than a fast-acting NRT alone. The findings of this study may help to improve tobacco cessation strategies in Kazakhstan and other countries with high smoking prevalence rates. TRIAL REGISTRATION NUMBER NCT05484505.
Collapse
Affiliation(s)
- Chethan Purushothama
- School of sciences & Humanities, Nazarbayev University, Nur-Sultan city, Republic of Kazakhstan
| | - Byron Lawrence Crape
- Nazarbayev University School of Medicine, Nur-Sultan city, Republic of Kazakhstan
| | - Valentina Stolyarov
- Nazarbayev University School of Medicine, Nur-Sultan city, Republic of Kazakhstan
| | | | - Philip la Fleur
- Department of Medicine, Nazarbayev University School of Medicine, Astana, Republic of Kazakhstan
| | - Jeby Jose Olickal
- Department of Public Health, Amrita Institute of Medical Sciences, Kochi, Kerala, India
| |
Collapse
|
19
|
Viderman D, Aubakirova M, Aryngazin A, Yessimova D, Kaldybayev D, Tankacheyev R, Abdildin YG. Ultrasound-Guided vs. Fluoroscopy-Guided Interventions for Back Pain Management: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Diagnostics (Basel) 2023; 13:3474. [PMID: 37998610 PMCID: PMC10670286 DOI: 10.3390/diagnostics13223474] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/01/2023] [Accepted: 11/09/2023] [Indexed: 11/25/2023] Open
Abstract
The objective of this study was to compare the outcomes of the ultrasound- and fluoroscopy-guided techniques in the management of back pain. Using PubMed, Scopus, and the Cochrane Library, we searched randomized controlled trials (RCTs) published before May 2023, which reported relevant data on the topic. The effectiveness of the ultrasound-guided (US-guided) and fluoroscopy-guided (FL-guided) approaches for back pain management was compared in terms of postoperative pain intensity, postoperative functional outcomes, and postoperative complications. Subgroup analyses were conducted for different postoperative periods. Eight studies were included in the analysis. There was no significant difference in post-procedural pain relief at one week, two weeks, one month, two months, and three months between the US-guided and FL-guided interventions for back pain management (SMD with 95% CI is -0.01 [-0.11, 0.10]), p = 0.91, I2 = 0%). In terms of the postoperative functional outcomes assessed by the "Oswestry Disability Index" (ODI) functionality score, the model tends to favor the FL-guided injections over the US-guided injections (SMD with 95% CI: 0.13 [-0.00, 0.25], p = 0.05, I2 = 0). Finally, the US-guided and FL-guided injections did not show significantly different results in terms of postoperative complications (RR with 95% CI is 0.99 [0.49, 1.99], p = 0.97, I2 = 0). The subgroup analysis also did not demonstrate differences between the US-guided and FL-guided techniques in the following outcomes: vasovagal reaction, transient headache, and facial flushing. There was no significant difference between the US-guided and FL-guided injections for treating back pain in terms of postoperative pain intensity and complications. Still, the model tends to favor the FL-guided injections over the US-guided injections in terms of functionality.
Collapse
Affiliation(s)
- Dmitriy Viderman
- Department of Surgery, Section of Anesthesiology, Intensive Care, and Pain Medicine, Nazarbayev University School of Medicine (NUSOM), Astana 020000, Kazakhstan; (M.A.); or (D.Y.)
| | - Mina Aubakirova
- Department of Surgery, Section of Anesthesiology, Intensive Care, and Pain Medicine, Nazarbayev University School of Medicine (NUSOM), Astana 020000, Kazakhstan; (M.A.); or (D.Y.)
| | - Anuar Aryngazin
- Department of Mechanical and Aerospace Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan; (A.A.); (D.K.); (Y.G.A.)
| | - Dinara Yessimova
- Department of Surgery, Section of Anesthesiology, Intensive Care, and Pain Medicine, Nazarbayev University School of Medicine (NUSOM), Astana 020000, Kazakhstan; (M.A.); or (D.Y.)
- Department of Health Care Management, Faculty of Economics & Management, Technische Universität Berlin, 13355 Berlin, Germany
| | - Dastan Kaldybayev
- Department of Mechanical and Aerospace Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan; (A.A.); (D.K.); (Y.G.A.)
| | - Ramil Tankacheyev
- Department of Pain Medicine, National Neurosurgery Center, Astana 010000, Kazakhstan;
| | - Yerkin G. Abdildin
- Department of Mechanical and Aerospace Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan; (A.A.); (D.K.); (Y.G.A.)
| |
Collapse
|
20
|
Tore U, Abilgazym A, Asunsolo-del-Barco A, Terzic M, Yemenkhan Y, Zollanvari A, Sarria-Santamera A. Diagnosis of Endometriosis Based on Comorbidities: A Machine Learning Approach. Biomedicines 2023; 11:3015. [PMID: 38002015 PMCID: PMC10669733 DOI: 10.3390/biomedicines11113015] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/27/2023] [Accepted: 10/31/2023] [Indexed: 11/26/2023] Open
Abstract
Endometriosis is defined as the presence of estrogen-dependent endometrial-like tissue outside the uterine cavity. Despite extensive research, endometriosis is still an enigmatic disease and is challenging to diagnose and treat. A common clinical finding is the association of endometriosis with multiple diseases. We use a total of 627,566 clinically collected data from cases of endometriosis (0.82%) and controls (99.18%) to construct and evaluate predictive models. We develop a machine learning platform to construct diagnostic tools for endometriosis. The platform consists of logistic regression, decision tree, random forest, AdaBoost, and XGBoost for prediction, and uses Shapley Additive Explanation (SHAP) values to quantify the importance of features. In the model selection phase, the constructed XGBoost model performs better than other algorithms while achieving an area under the curve (AUC) of 0.725 on the test set during the evaluation phase, resulting in a specificity of 62.9% and a sensitivity of 68.6%. The model leads to a quite low positive predictive value of 1.5%, but a quite satisfactory negative predictive value of 99.58%. Moreover, the feature importance analysis points to age, infertility, uterine fibroids, anxiety, and allergic rhinitis as the top five most important features for predicting endometriosis. Although these results show the feasibility of using machine learning to improve the diagnosis of endometriosis, more research is required to improve the performance of predictive models for the diagnosis of endometriosis. This state of affairs is in part attributed to the complex nature of the condition and, at the same time, the administrative nature of our features. Should more informative features be used, we could possibly achieve a higher AUC for predicting endometriosis. As a result, we merely perceive the constructed predictive model as a tool to provide auxiliary information in clinical practice.
Collapse
Affiliation(s)
- Ulan Tore
- School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan; (U.T.); (A.A.)
| | - Aibek Abilgazym
- School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan; (U.T.); (A.A.)
| | - Angel Asunsolo-del-Barco
- Department of Surgery, Medical and Social Sciences, Faculty of Medicine, University of Alcalá, 288871 Alcalá de Henares, Spain;
- Department of Epidemiology and Biostatistics, Graduate School of Public Health and Health Policy, City University of New York (CUNY), New York, NY 10028, USA
- Ramón y Cajal Institute of Healthcare Research (IRYCIS), 28034 Madrid, Spain
| | - Milan Terzic
- Department of Surgery, School of Medicine, Nazarbayev University, Astana 010000, Kazakhstan;
- Clinical Academic Department of Women’s Health, CF “University Medical Center”, Astana 010000, Kazakhstan
- Department of Obstetrics, Gynecology and Reproductive Sciences, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Yerden Yemenkhan
- Department of Medicine, School of Medicine, Nazarbayev University, Astana 010000, Kazakhstan;
| | - Amin Zollanvari
- School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan; (U.T.); (A.A.)
| | - Antonio Sarria-Santamera
- Department of Biomedical Sciences, School of Medicine, Nazarbayev University, Astana 010000, Kazakhstan;
| |
Collapse
|
21
|
Piletsky SS, Baidyuk E, Piletska EV, Lezina L, Shevchenko K, Jones DJL, Cao TH, Singh R, Spivey AC, Aboagye EO, Piletsky SA, Barlev NA. Modulation of EGFR Activity by Molecularly Imprinted Polymer Nanoparticles Targeting Intracellular Epitopes. Nano Lett 2023; 23:9677-9682. [PMID: 37902816 PMCID: PMC10636853 DOI: 10.1021/acs.nanolett.3c01374] [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] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 10/15/2023] [Indexed: 10/31/2023]
Abstract
In recent years, molecularly imprinted polymer nanoparticles (nanoMIPs) have proven to be an attractive alternative to antibodies in diagnostic and therapeutic applications. However, several key questions remain: how suitable are intracellular epitopes as targets for nanoMIP binding? And to what extent can protein function be modulated via targeting specific epitopes? To investigate this, three extracellular and three intracellular epitopes of epidermal growth factor receptor (EGFR) were used as templates for the synthesis of nanoMIPs which were then used to treat cancer cells with different expression levels of EGFR. It was observed that nanoMIPs imprinted with epitopes from the intracellular kinase domain and the extracellular ligand binding domain of EGFR caused cells to form large foci of EGFR sequestered away from the cell surface, caused a reduction in autophosphorylation, and demonstrated effects on cell viability. Collectively, this suggests that intracellular domain-targeting nanoMIPs can be a potential new tool for cancer therapy.
Collapse
Affiliation(s)
- Stanislav S. Piletsky
- Department
of Chemistry, Imperial College London, Molecular Sciences Research Hub,
White City Campus, London W12 0BZ, United Kingdom
| | - Ekaterina Baidyuk
- L.A.
Orbeli Institute of Physiology NAS, Yerevan 0028, Republic of Armenia
- Institute
of Cytology, 197101 Saint-Petersburg, Russia
| | - Elena V. Piletska
- School
of Chemistry, University of Leicester, Leicester LE1 7RH, United Kingdom
| | - Larissa Lezina
- Department
of Cancer Studies, University of Leicester, Leicester LE1 7RH, United Kingdom
| | | | - Donald J. L. Jones
- Leicester
Cancer Research Centre, University of Leicester, Leicester Royal Infirmary, Leicester LE1 7RH, United Kingdom
- Department
of Cardiovascular Sciences, University of
Leicester, Leicester LE1 7RH, United
Kingdom
- National
Institute for Health Research, Leicester Biomedical Research Centre,
Glenfield Hospital, Leicester LE1 7RH, United
Kingdom
| | - Thong H. Cao
- Department
of Cardiovascular Sciences, University of
Leicester, Leicester LE1 7RH, United
Kingdom
- National
Institute for Health Research, Leicester Biomedical Research Centre,
Glenfield Hospital, Leicester LE1 7RH, United
Kingdom
| | - Rajinder Singh
- Leicester
Cancer Research Centre, University of Leicester, Leicester Royal Infirmary, Leicester LE1 7RH, United Kingdom
| | - Alan C. Spivey
- Department
of Chemistry, Imperial College London, Molecular Sciences Research Hub,
White City Campus, London W12 0BZ, United Kingdom
| | - Eric O. Aboagye
- Department
of Surgery and Cancer, Imperial College
London, Hammersmith Campus, Du Cane Road, London SW7 2BX, United
Kingdom
| | - Sergey A. Piletsky
- School
of Chemistry, University of Leicester, Leicester LE1 7RH, United Kingdom
| | - Nickolai A. Barlev
- Nazarbayev
University School of Medicine, 53 Kabanbay Batyr Ave, Nur-Sultan 010000, Republic
of Kazakhstan
- Sechenov
First Medical University, 119992 Moscow, Russia
| |
Collapse
|
22
|
Tashenov Y, Suleimenova D, Baptayev B, Adilov S, Balanay MP. Efficient One-Step Synthesis of a Pt-Free Zn 0.76Co 0.24S Counter Electrode for Dye-Sensitized Solar Cells and Its Versatile Application in Photoelectrochromic Devices. Nanomaterials (Basel) 2023; 13:2812. [PMID: 37887961 PMCID: PMC10610264 DOI: 10.3390/nano13202812] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/09/2023] [Accepted: 10/16/2023] [Indexed: 10/28/2023]
Abstract
In this study, we synthesized a ternary transition metal sulfide, Zn0.76Co0.24S (ZCS-CE), using a one-step solvothermal method and explored its potential as a Pt-free counter electrode for dye-sensitized solar cells (DSSCs). Comprehensive investigations were conducted to characterize the structural, morphological, compositional, and electronic properties of the ZCS-CE electrode. These analyses utilized a range of techniques, including X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy. The electrocatalytic performance of ZCS-CE for the reduction of I3- species in a symmetrical cell configuration was evaluated through electrochemical impedance spectroscopy and cyclic voltammetry. Our findings reveal that ZCS-CE displayed superior electrocatalytic activity and stability when compared to platinum in I-/I3- electrolyte systems. Furthermore, ZCS-CE-based DSSCs achieved power conversion efficiencies on par with their Pt-based counterparts. Additionally, we expanded the applicability of this material by successfully powering an electrochromic cell with ZCS-CE-based DSSCs. This work underscores the versatility of ZCS-CE and establishes it as an economically viable and environmentally friendly alternative to Pt-based counter electrodes in DSSCs and other applications requiring outstanding electrocatalytic performance.
Collapse
Affiliation(s)
- Yerbolat Tashenov
- National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Ave., Astana 010000, Kazakhstan; (Y.T.); (D.S.)
- Department of Chemistry, L.N. Gumilyov Eurasian National University, 2 Satpayev St., Astana 010008, Kazakhstan
| | - Diana Suleimenova
- National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Ave., Astana 010000, Kazakhstan; (Y.T.); (D.S.)
- Department of Chemistry, L.N. Gumilyov Eurasian National University, 2 Satpayev St., Astana 010008, Kazakhstan
| | - Bakhytzhan Baptayev
- National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Ave., Astana 010000, Kazakhstan; (Y.T.); (D.S.)
| | - Salimgerey Adilov
- National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Ave., Astana 010000, Kazakhstan; (Y.T.); (D.S.)
- Department of Chemistry, Nazarbayev University, 53 Kabanbay Batyr Ave., Astana 010000, Kazakhstan
| | - Mannix P. Balanay
- National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Ave., Astana 010000, Kazakhstan; (Y.T.); (D.S.)
- Department of Chemistry, Nazarbayev University, 53 Kabanbay Batyr Ave., Astana 010000, Kazakhstan
| |
Collapse
|
23
|
Rakhimbekova A, Kudaibergenov B, Seitkamal K, Bellone A, Dauletova A, Sypabekova M, Olivero M, Perrone G, Radaelli A, Zanotto C, De Giuli Morghen C, Vangelista L, Tosi D. Rapid detection of vaccinia virus using biofunctionalized fiber-optic ball-tip biosensors. Sci Rep 2023; 13:17470. [PMID: 37838808 PMCID: PMC10576743 DOI: 10.1038/s41598-023-44926-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 10/13/2023] [Indexed: 10/16/2023] Open
Abstract
In this work, we present the development and biofunctionalization of a fiber-optic ball-resonator biosensor for the real-time detection of vaccinia poxvirus. We fabricated several ball-tip resonators, functionalized through a silanization process to immobilize two bioreceptors: the monoclonal anti-L1R antibody targeting the L1R protein, and the polyclonal rabbit serum antibodies targeting the whole vaccinia virus (VV) pathogen. Experimental measurements were carried out to detect VV in concentrations from 103 to 108 plaque-forming units (PFU), with a limit of detection of around 1.7-4.3 × 103 PFU and a log-quadratic pattern, with a response up to 5 × 10-4 RIU (refractive index units). The specificity was assessed against herpes simplex virus, used as a non-specific control, with the best results obtained with anti-L1R monoclonal antibodies, and through the detection of vaccinia virus/herpes simplex-1 combination. The obtained results provide a real-time viral recognition with a label-free sensing platform, having rapid response and ease of manufacturing, and paving the road to the seamless detection of poxviruses affecting different human and animal species using optical fibers.
Collapse
Affiliation(s)
- Aida Rakhimbekova
- Department of Electrical and Computer Engineering, School of Engineering and Digital Sciences, Nazarbayev University, 010000, Astana, Kazakhstan
| | - Baizak Kudaibergenov
- Department of Electrical and Computer Engineering, School of Engineering and Digital Sciences, Nazarbayev University, 010000, Astana, Kazakhstan
| | - Kuanysh Seitkamal
- Department of Biomedical Sciences, School of Medicine, Nazarbayev University, 010000, Astana, Kazakhstan
| | - Aurora Bellone
- Department of Electronics and Telecommunications, Politecnico Di Torino, Turin, Italy
| | - Ayazhan Dauletova
- Department of Electrical and Computer Engineering, School of Engineering and Digital Sciences, Nazarbayev University, 010000, Astana, Kazakhstan
| | - Marzhan Sypabekova
- Department of Electrical & Computer Engineering, Baylor University, Waco, TX, USA
| | - Massimo Olivero
- Department of Electronics and Telecommunications, Politecnico Di Torino, Turin, Italy
| | - Guido Perrone
- Department of Electronics and Telecommunications, Politecnico Di Torino, Turin, Italy
| | - Antonia Radaelli
- Department of Medical Biotechnologies and Translational Medicine, Laboratory of Molecular Virology and Recombinant Vaccine Development, University of Milan, Via Vanvitelli 32, Milan, Italy
- Catholic University "Our Lady of Good Counsel", Rr. Dritan Hoxha, Tirana, Albania
| | - Carlo Zanotto
- Department of Medical Biotechnologies and Translational Medicine, Laboratory of Molecular Virology and Recombinant Vaccine Development, University of Milan, Via Vanvitelli 32, Milan, Italy
| | | | - Luca Vangelista
- Department of Biomedical Sciences, School of Medicine, Nazarbayev University, 010000, Astana, Kazakhstan
- Department of Molecular Medicine, University of Pavia, 27100, Pavia, Italy
| | - Daniele Tosi
- Department of Electrical and Computer Engineering, School of Engineering and Digital Sciences, Nazarbayev University, 010000, Astana, Kazakhstan.
- Laboratory of Biosensors and Bioinstruments, National Laboratory Astana, 010000, Astana, Kazakhstan.
| |
Collapse
|
24
|
Bakar A, Kiani MS, Nawaz R, Wahab A. Pressure-dependent physical properties of cesium-niobium oxide: a comprehensive study. RSC Adv 2023; 13:29675-29688. [PMID: 37822653 PMCID: PMC10562979 DOI: 10.1039/d3ra02398b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 09/22/2023] [Indexed: 10/13/2023] Open
Abstract
Perovskites, an important class of materials, are mostly utilized in memory and spintronic devices. The thermoelectric response calculations for some perovskite oxides have been reported, but their attributes under pressure have rarely been explored. In this current study, the effects of high pressure on various properties of CsNbO3 perovskite oxides in the cubic phase were investigated using the pseudopotential approach and Boltzmann transport theory. Specifically, the structural electronic dispersion relations, density of states, phonon properties, elasto-mechanical properties, optical constants, and thermoelectric performance of the material were analyzed. CsNbO3 was reported to be dynamically stable through the optimization of energy against volume under ambient pressure conditions. The phonon dispersion curves of CsNbO3 were computed at pressures ranging from 60 to 100 GPa to demonstrate its stability under these pressures. At ambient pressure, CsNbO3 is a semiconductor with a wide direct band gap of 1.95 eV. With the increase in pressure, the band gap starts decreasing. An analysis of the imaginary part of the dielectric constant suggests that this material may be useful for sensors and optoelectronic devices. Various thermoelectric response parameters were tested for CsNbO3 at temperatures from 50 K to 800 K, with a step size of 50 K, and pressures of 60-100 GPa. Based on the calculated power factor values and optical parameters, CsNbO3 proved to be a potential candidate for energy harvesting applications.
Collapse
Affiliation(s)
- Abu Bakar
- Centre of Excellence in Solid State Physics, University of the Punjab Lahore-54000 Pakistan
| | | | - Rab Nawaz
- Center for Applied Mathematics and Bioinformatics (CAMB), Gulf University for Science and Technology 32093 Hawally Kuwait
| | - Abdul Wahab
- Department of Mathematics, Nazarbayev University Astana 010000 Kazakhstan
| |
Collapse
|
25
|
Schopp N, Abdikamalov E, Mostovyi AI, Parkhomenko HP, Solovan MM, Asare EA, Bazan GC, Nguyen TQ, Smoot GF, Brus VV. Interstellar photovoltaics. Sci Rep 2023; 13:16114. [PMID: 37752226 PMCID: PMC10522670 DOI: 10.1038/s41598-023-43224-5] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 09/21/2023] [Indexed: 09/28/2023] Open
Abstract
The term 'Solar Cell' is commonly used for Photovoltaics that convert light into electrical energy. However, light can be harvested from various sources not limited to the Sun. This work considers the possibility of harvesting photons from different star types, including our closest neighbor star Proxima Centauri. The theoretical efficiency limits of single junction photovoltaic devices are calculated for different star types at a normalized light intensity corresponding to the AM0 spectrum intensity with AM0 = 1361 W/m2. An optimal bandgap of > 12 eV for the hottest O5V star type leads to 47% Shockley-Queisser photoconversion efficiency (SQ PCE), whereas a narrower optimal bandgap of 0.7 eV leads to 23% SQ PCE for the coldest red dwarf M0, M5.5Ve, and M8V type stars. Organic Photovoltaics (OPVs) are the most lightweight solar technology and have the potential to be employed in weight-restricted space applications, including foreseeable interstellar missions. With that in mind, the Sun's G2V spectrum and Proxima Centauri's M5.5Ve spectrum are considered in further detail in combination with two extreme bandgap OPV systems: one narrow bandgap system (PM2:COTIC-4F, Eg = 1.14 eV) and one wide bandgap system (PM6:o-IDTBR, Eg = 1.62 eV). Semi-empirically modeled JV-curves reveal that the absorption characteristics of the PM2:COTIC-4F blend match well with both the G2V and the M5.5Ve spectrum, yielding theoretical PCEs of 22.6% and 12.6%, respectively. In contrast, the PM6:o-IDTBR device shows a theoretical PCE of 18.2% under G2V illumination that drops sharply to 0.9% under M5.5Ve illumination.
Collapse
Affiliation(s)
- Nora Schopp
- Center for Polymers and Organic Solids, Department of Chemistry and Biochemistry, University of California Santa Barbara (UCSB), Santa Barbara, CA, 93106, USA
| | - Ernazar Abdikamalov
- Department of Physics, School of Sciences and Humanities, Nazarbayev University, 010000, Astana, Republic of Kazakhstan
- Energetic Cosmos Laboratory, Nazarbayev University, Astana, 010000, Republic of Kazakhstan
| | - Andrii I Mostovyi
- Department of Physics, School of Sciences and Humanities, Nazarbayev University, 010000, Astana, Republic of Kazakhstan
- Department of Electronics and Energy Engineering, Yuriy Fedkovych Chernivtsi National University, Chernivtsi, 58012, Ukraine
| | - Hryhorii P Parkhomenko
- Department of Physics, School of Sciences and Humanities, Nazarbayev University, 010000, Astana, Republic of Kazakhstan
| | | | - Ernest A Asare
- Department of Physics, School of Sciences and Humanities, Nazarbayev University, 010000, Astana, Republic of Kazakhstan
| | - Guillermo C Bazan
- Departments of Chemistry and Chemical & Biomolecular Engineering, Institute for Functional Intelligent Materials (I-FIM), National University of Singapore, Singapore, 119077, Singapore.
| | - Thuc-Quyen Nguyen
- Center for Polymers and Organic Solids, Department of Chemistry and Biochemistry, University of California Santa Barbara (UCSB), Santa Barbara, CA, 93106, USA.
| | - George F Smoot
- Energetic Cosmos Laboratory, Nazarbayev University, Astana, 010000, Republic of Kazakhstan.
- Physics Department and LBNL, University of California, Emeritus, Berkeley, CA, 94720, USA.
- Paris Centre for Cosmological Physics, CNRS, Université de Paris, Emeritus, Astroparticule Et Cosmologie, F-75013, Paris, France.
- Department of Physics, The Hong Kong University of Science and Technology, Emeritus, Clear Water Bay, Kowloon, Hong Kong.
| | - Viktor V Brus
- Department of Physics, School of Sciences and Humanities, Nazarbayev University, 010000, Astana, Republic of Kazakhstan.
| |
Collapse
|
26
|
Abduvalov A, Kaikanov M, Tikhonov A. Solid-State Dewetting of Thin Silver Films into Spherical Nanoparticles under High-Current Pulsed Ion Beam Irradiation. ACS Omega 2023; 8:31954-31961. [PMID: 37692229 PMCID: PMC10483687 DOI: 10.1021/acsomega.3c03743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 08/11/2023] [Indexed: 09/12/2023]
Abstract
Noble metal nanoparticles (NPs) are important in many applications, including light trapping of photovoltaic cells, photoelectrochemical applications, etc. The present study reports the formation of silver NPs from the as-deposited silver coatings on fused silica substrates by solid-state dewetting induced by high-current intense pulsed ion beam (IPIB) irradiation. We described the effects of IPIB irradiation with different ion beam current densities and numbers of pulses on NP morphology and compared the results with conventional rapid thermal annealing (RTA). IPIB irradiation enables superfast heating (higher than 109 K/s) and cooling, providing a superfast annealing solid-state dewetting mechanism. Our results demonstrate that the sphericity of silver NPs is enhanced after IPIB irradiation relative to RTA-annealed silver NPs. Our results suggest further possibilities of shape and sphericity control of silver NPs with very fast heating/cooling annealing rates.
Collapse
Affiliation(s)
- Alshyn Abduvalov
- Physics Department, Nazarbayev University, 53 Kabanbay Batyr St., 010000 Astana, Kazakhstan
| | - Marat Kaikanov
- Physics Department, Nazarbayev University, 53 Kabanbay Batyr St., 010000 Astana, Kazakhstan
| | - Alexander Tikhonov
- Physics Department, Nazarbayev University, 53 Kabanbay Batyr St., 010000 Astana, Kazakhstan
| |
Collapse
|
27
|
Abbas AH, Serikov G, Zhuniskenov Y, Eghtesadi N, Bou-Hamdan KF, Pham TT. Investigation of Natural Mucilage for Enhanced Oil Recovery: the Potential of Corchorus Olitorius Hydrocolloid. ACS Omega 2023; 8:29693-29703. [PMID: 37599917 PMCID: PMC10433331 DOI: 10.1021/acsomega.3c03834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 07/19/2023] [Indexed: 08/22/2023]
Abstract
The need for an effective offshore enhanced oil recovery (EOR) solution led to the focus on natural hydrocolloids. Polysaccharide hydrocolloid research is constantly expanding in a variety of petroleum applications such as drilling, flow assurance, and EOR. Corchorus olitorius is being examined in the present study as a potential natural polymer for chemical flooding. This study investigated the rheology and fluid flow characteristics in porous media, focusing on the effects of the concentration, temperature, and salinity of the fluid. Furthermore, core flooding was carried out to evaluate the potential recovery was characterized and found to contain a significant amount of polysaccharides and cellulose. The rheological behavior demonstrated an increase in viscosity with concentration. The relationship between viscosity and temperature is inversely proportional. Additionally, the mucilage viscosity significantly increased in the presence of 35,000 ppm NaCl, varying from 39 to 48 cp. The improvement of oil recovery by a unit PV injection is around 10 and 20% at 0 and 35,000 ppm of NaCl, respectively. In sandstone with a moderate porosity and permeability, the overall oil recovery ranges between 59 and 70%. C. olitorius has complex polysaccharide/cellulose derivatives that improved rheology and produced results that are promising for future offshore applications.
Collapse
Affiliation(s)
- Azza Hashim Abbas
- Department
of Petroleum Engineering, School of Mining and Geosciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Ghalymzhan Serikov
- Department
of Petroleum Engineering, School of Mining and Geosciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Yermukhan Zhuniskenov
- Department
of Petroleum Engineering, School of Mining and Geosciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Neda Eghtesadi
- Department
of Chemical and Materials Engineering, School of Engineering and Digital
Sciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Kamel Fahmi Bou-Hamdan
- Chemical
& Petroleum Engineering Department, Beirut Arab University, Debbieh 1107 2809, Lebanon
| | - Tri Thanh Pham
- Department
of Biology, School of Sciences and Humanities, Nazarbayev University, Astana 010000, Kazakhstan
| |
Collapse
|
28
|
Sariyev B, Abdikadyr A, Baitikenov T, Anuarbekov Y, Golman B, Spitas C. Thermal properties and mechanical behavior of hot pressed PEEK/graphite thin film laminate composites. Sci Rep 2023; 13:12785. [PMID: 37550485 PMCID: PMC10406908 DOI: 10.1038/s41598-023-39905-w] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 08/01/2023] [Indexed: 08/09/2023] Open
Abstract
This work studies high-performance laminate composite materials made of graphite and poly(ether-ether-ketone) (PEEK). The main objective was to enhance graphite's inherent properties by the addition of PEEK to produce materials with improved thermal and mechanical stability for high-performance applications. The composites were fabricated using a hot press method at a temperature below 310 °C. The newly formed materials were then subjected to various tests, including Scanning Electron Microscopy, Thermogravimetric Analysis, mechanical properties tests, nanoindentation tests, and X-Ray Diffraction to assess their structural, thermal, and mechanical properties. Our findings showed a substantial interfacial interaction between PEEK and graphite, indicating successful composite formation. Both three-layered PEEK/graphite/PEEK (PGP) and five-layered PEEK/graphite/PEEK/graphite/PEEK (PG)2P composites exhibited superior thermal stability at high temperatures compared to neat PEEK. Moreover, our mechanical tests demonstrated a 172% increase in ultimate tensile strength of PGP compared to neat graphite. Additionally, nanoindentation tests confirmed an increase in both Young's modulus and hardness of composites. Furthermore, XRD analysis revealed a 35.5% increase in crystallinity in the fabricated composites compared to pristine PEEK. These findings significantly contribute to the field of high-performance composite materials, confirming that the hot pressing of PEEK and graphite sheets results in enhanced thermal and mechanical properties.
Collapse
Affiliation(s)
- Bakytzhan Sariyev
- Department of Mechanical and Aerospace Engineering, School of Engineering and Digital Sciences, Nazarbayev University, 010000, Astana, Kazakhstan.
| | - Alina Abdikadyr
- Department of Mechanical and Aerospace Engineering, School of Engineering and Digital Sciences, Nazarbayev University, 010000, Astana, Kazakhstan
| | - Temirlan Baitikenov
- Department of Mechanical and Aerospace Engineering, School of Engineering and Digital Sciences, Nazarbayev University, 010000, Astana, Kazakhstan
| | - Yerbolat Anuarbekov
- Department of Mechanical and Aerospace Engineering, School of Engineering and Digital Sciences, Nazarbayev University, 010000, Astana, Kazakhstan
| | - Boris Golman
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, 010000, Astana, Kazakhstan.
| | - Christos Spitas
- Department of Mechanical and Aerospace Engineering, School of Engineering and Digital Sciences, Nazarbayev University, 010000, Astana, Kazakhstan
| |
Collapse
|
29
|
Bakuova N, Toktarkan S, Dyussembinov D, Azhibek D, Rakhymzhanov A, Kostas K, Kulsharova G. Design, Simulation, and Evaluation of Polymer-Based Microfluidic Devices via Computational Fluid Dynamics and Cell Culture "On-Chip". Biosensors (Basel) 2023; 13:754. [PMID: 37504152 PMCID: PMC10377015 DOI: 10.3390/bios13070754] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/10/2023] [Accepted: 07/11/2023] [Indexed: 07/29/2023]
Abstract
Organ-on-a-chip (OoC) technology has experienced exponential growth driven by the need for a better understanding of in-organ processes and the development of novel approaches. This paper investigates and compares the flow behavior and filling characteristics of two microfluidic liver-on-a-chip devices using Computational Fluid Dynamics (CFD) analysis and experimental cell culture growth based on the Huh7 cell line. The conducted computational analyses for the two chips showed that the elliptical chamber chip proposed herein offers improved flow and filling characteristics in comparison with the previously presented circular chamber chip. Huh7 hepatoma cells were cultured in the microfluidic devices for 24 h under static fluidic conditions and for 24 h with a flow rate of 3 μL·min-1. Biocompatibility, continuous flow, and biomarker studies showed cell attachment in the chips, confirming the cell viability and their consistent cell growth. The study successfully analyzed the fluid flow behavior, filling characteristics, and biocompatibility of liver-on-a-chip prototype devices, providing valuable insights to improve design and performance and advance alternative methods of in vitro testing.
Collapse
Affiliation(s)
- Nurzhanna Bakuova
- Department of Electrical and Computer Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Sultanali Toktarkan
- Department of Electrical and Computer Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Darkhan Dyussembinov
- Department of Mechanical and Aerospace Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Dulat Azhibek
- Department of Electrical and Computer Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Almas Rakhymzhanov
- Nanofabrication Core Lab, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Konstantinos Kostas
- Department of Mechanical and Aerospace Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Gulsim Kulsharova
- Department of Electrical and Computer Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan
| |
Collapse
|
30
|
Nuroldayeva G, Balanay MP. Flexing the Spectrum: Advancements and Prospects of Flexible Electrochromic Materials. Polymers (Basel) 2023; 15:2924. [PMID: 37447568 DOI: 10.3390/polym15132924] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 06/27/2023] [Accepted: 06/30/2023] [Indexed: 07/15/2023] Open
Abstract
The application potential of flexible electrochromic materials for wearable devices, smart textiles, flexible displays, electronic paper, and implantable biomedical devices is enormous. These materials offer the advantages of conformability and mechanical robustness, making them highly desirable for these applications. In this review, we comprehensively examine the field of flexible electrochromic materials, covering topics such as synthesis methods, structure design, electrochromic mechanisms, and current applications. We also address the challenges associated with achieving flexibility in electrochromic materials and discuss strategies to overcome them. By shedding light on these challenges and proposing solutions, we aim to advance the development of flexible electrochromic materials. We also highlight recent advances in the field and present promising directions for future research. We intend to stimulate further innovation and development in this rapidly evolving field and encourage researchers to explore new opportunities and applications for flexible electrochromic materials. Through this review, readers can gain a comprehensive understanding of the synthesis, design, mechanisms, and applications of flexible electrochromic materials. It serves as a valuable resource for researchers and industry professionals looking to harness the potential of these materials for various technological applications.
Collapse
Affiliation(s)
- Gulzat Nuroldayeva
- Department of Chemistry, Nazarbayev University, 53 Kabanbay Batyr Ave., Astana 010000, Kazakhstan
- Institute of Batteries LLC, 53 Kabanbay Batyr Ave., Astana 010000, Kazakhstan
| | - Mannix P Balanay
- Department of Chemistry, Nazarbayev University, 53 Kabanbay Batyr Ave., Astana 010000, Kazakhstan
| |
Collapse
|
31
|
Kalendar R, Kairov U, Karabayev D, Aitkulova A, Tynyshtykbayeva N, Daniyarov A, Otarbay Z, Rakhimova S, Akilzhanova A, Sarbassov D. Universal whole-genome Oxford nanopore sequencing of SARS-CoV-2 using tiled amplicons. Sci Rep 2023; 13:10334. [PMID: 37365249 DOI: 10.1038/s41598-023-37588-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 06/23/2023] [Indexed: 06/28/2023] Open
Abstract
We developed a comprehensive multiplexed set of primers adapted for the Oxford Nanopore Rapid Barcoding library kit that allows universal SARS-CoV-2 genome sequencing. This primer set is designed to set up any variants of the primers pool for whole-genome sequencing of SARS-CoV-2 using single- or double-tiled amplicons from 1.2 to 4.8 kb with the Oxford Nanopore. This multiplexed set of primers is also applicable for tasks like targeted SARS-CoV-2 genome sequencing. We proposed here an optimized protocol to synthesize cDNA using Maxima H Minus Reverse Transcriptase with a set of SARS-CoV-2 specific primers, which has high yields of cDNA template for RNA and is capable of long-length cDNA synthesis from a wide range of RNA amounts and quality. The proposed protocol allows whole-genome sequencing of the SARS-CoV-2 virus with tiled amplicons up to 4.8 kb on low-titer virus samples and even where RNA degradation has occurred. This protocol reduces the time and cost from RNA to genome sequence compared to the Midnight multiplex PCR method for SARS-CoV-2 genome sequencing using the Oxford Nanopore.
Collapse
Affiliation(s)
- Ruslan Kalendar
- Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan.
- Institute of Biotechnology, Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Helsinki, Finland.
| | - Ulykbek Kairov
- Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
| | - Daniyar Karabayev
- Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
- Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland
| | - Akbota Aitkulova
- Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
- Institute of Biotechnology, Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Helsinki, Finland
| | - Nuray Tynyshtykbayeva
- Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
| | - Asset Daniyarov
- Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
| | | | - Saule Rakhimova
- Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
| | - Ainur Akilzhanova
- Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
| | - Dos Sarbassov
- Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
- School of Sciences and Humanities, Nazarbayev University, Astana, Kazakhstan
| |
Collapse
|
32
|
Kiani M, Parkhomenko HP, Mangrulkar M, Aigarayeva S, Akhanuly A, Shalenov EO, Ng A, Jumabekov AN. Stepping toward Portable Optoelectronics with SnO 2 Quantum Dot-Based Electron Transport Layers. ACS Omega 2023; 8:21212-21222. [PMID: 37323420 PMCID: PMC10268264 DOI: 10.1021/acsomega.3c02341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 04/25/2023] [Indexed: 06/17/2023]
Abstract
With a power conversion efficiency (PCE) of more than 25%, perovskite solar cells (PSCs) have shown an immense potential application for solar energy conversion. Owing to lower manufacturing costs and facile processibility via printing techniques, PSCs can easily be scaled up to an industrial scale. The device performance of printed PSCs has been improving steadily with the development and optimization of the printing process for the device functional layers. Various kinds of SnO2 nanoparticle (NP) dispersion solutions including commercial ones are used to print the electron transport layer (ETL) of printed PSCs, and high processing temperatures are often required to obtain ETLs with optimum quality. This, however, limits the application of SnO2 ETLs in printed and flexible PSCs. In this work, the use of an alternative SnO2 dispersion solution based on SnO2 quantum dots (QDs) to fabricate ETLs of printed PSCs on flexible substrates is reported. A comparative analysis of the performance and properties of the obtained devices with the devices fabricated employing ETLs made with a commercial SnO2 NP dispersion solution is carried out. The ETLs made with SnO2 QDs are shown to improve the performance of devices by ∼11% on average compared to the ETLs made with SnO2 NPs. It is found that employing SnO2 QDs can reduce trap states in the perovskite layer and improve charge extraction in devices.
Collapse
Affiliation(s)
- Muhammad
Salman Kiani
- Department
of Physics, School of Sciences and Humanities, Nazarbayev University, Astana 010000, Kazakhstan
| | - Hryhorii P. Parkhomenko
- Department
of Physics, School of Sciences and Humanities, Nazarbayev University, Astana 010000, Kazakhstan
| | - Mayuribala Mangrulkar
- Department
of Physics, School of Sciences and Humanities, Nazarbayev University, Astana 010000, Kazakhstan
| | - Sabina Aigarayeva
- Department
of Physics, School of Sciences and Humanities, Nazarbayev University, Astana 010000, Kazakhstan
| | - Assylan Akhanuly
- Department
of Physics, School of Sciences and Humanities, Nazarbayev University, Astana 010000, Kazakhstan
| | - Erik O. Shalenov
- Department
of General Physics, Satbayev University, Almaty 050013, Kazakhstan
| | - Annie Ng
- Department
of Electrical and Computer Engineering, School of Engineering and
Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Askhat N. Jumabekov
- Department
of Physics, School of Sciences and Humanities, Nazarbayev University, Astana 010000, Kazakhstan
| |
Collapse
|
33
|
Shehzad A, Mukasheva F, Moazzam M, Sultanova D, Abdikhan B, Trifonov A, Akilbekova D. Dual-Crosslinking of Gelatin-Based Hydrogels: Promising Compositions for a 3D Printed Organotypic Bone Model. Bioengineering (Basel) 2023; 10:704. [PMID: 37370635 DOI: 10.3390/bioengineering10060704] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 05/29/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
Gelatin-based hydrogels have emerged as a popular scaffold material for tissue engineering applications. The introduction of variable crosslinking methods has shown promise for fabricating stable cell-laden scaffolds. In this work, we examine promising composite biopolymer-based inks for extrusion-based 3D bioprinting, using a dual crosslinking approach. A combination of carefully selected printable hydrogel ink compositions and the use of photoinduced covalent and ionic crosslinking mechanisms allows for the fabrication of scaffolds of high accuracy and low cytotoxicity, resulting in unimpeded cell proliferation, extracellular matrix deposition, and mineralization. Three selected bioink compositions were characterized and the respective cell-laden scaffolds were bioprinted. Temporal stability, morphology, swelling, and mechanical properties of the scaffolds were thoroughly studied and the biocompatibility of the constructs was assessed using rat mesenchymal stem cells while focusing on osteogenesis. Experimental results showed that the composition of 1% alginate, 4% gelatin, and 5% (w/v) gelatine methacrylate, was found to be optimal among the examined, with shape fidelity of 88%, large cell spreading area and cell viability at around 100% after 14 days. The large pore diameters that exceed 100 µm, and highly interconnected scaffold morphology, make these hydrogels extremely potent in bone tissue engineering and bone organoid fabrication.
Collapse
Affiliation(s)
- Ahmer Shehzad
- Department of Chemical Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Fariza Mukasheva
- Department of Chemical Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Muhammad Moazzam
- Department of Chemical Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Dana Sultanova
- Department of Chemical Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Birzhan Abdikhan
- Department of Chemical Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Alexander Trifonov
- Department of Chemical Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Dana Akilbekova
- Department of Chemical Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan
| |
Collapse
|
34
|
Parfenyev SE, Shabelnikov SV, Tolkunova EN, Barlev NA, Mittenberg AG. p53 Affects Zeb1 Interactome of Breast Cancer Stem Cells. Int J Mol Sci 2023; 24:9806. [PMID: 37372954 DOI: 10.3390/ijms24129806] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/02/2023] [Accepted: 06/03/2023] [Indexed: 06/29/2023] Open
Abstract
P53 is a critical tumor suppressor that protects the integrity of genome and prevents cells from malignant transformation, including metastases. One of the driving forces behind the onset of metastases is the epithelial to mesenchymal transition (EMT) program. Zeb1 is one of the key transcription factors that govern EMT (TF-EMT). Therefore, the interaction and mutual influence of p53 and Zeb1 plays a critical role in carcinogenesis. Another important feature of tumors is their heterogeneity mediated by the presence of so-called cancer stem cells (CSCs). To this end, we have developed a novel fluorescent reporter-based approach to enrich the population of CSCs in MCF7 cells with inducible expression of Zeb1. Using these engineered cell lines, we studied the effect of p53 on Zeb1 interactomes isolated from both CSCs and regular cancer cells. By employing co-immunoprecipitations followed by mass spectrometry, we found that the composition of Zeb1 interactome was affected not only by the p53 status but also by the level of Oct4/Sox2 expression, indicating that stemness likely affects the specificity of Zeb1 interactions. This study, together with other proteomic studies of TF-EMT interactomes, provides a framework for future molecular analyses of biological functions of Zeb1 at all stages of oncogenesis.
Collapse
Affiliation(s)
- Sergey E Parfenyev
- Institute of Cytology of the Russian Academy of Sciences, St. Petersburg 194064, Russia
| | - Sergey V Shabelnikov
- Institute of Cytology of the Russian Academy of Sciences, St. Petersburg 194064, Russia
| | - Elena N Tolkunova
- Institute of Cytology of the Russian Academy of Sciences, St. Petersburg 194064, Russia
| | - Nickolai A Barlev
- Institute of Cytology of the Russian Academy of Sciences, St. Petersburg 194064, Russia
- Department of Biomedical Sciences, School of Medicine, Nazarbayev University, Astana 20000, Kazakhstan
| | - Alexey G Mittenberg
- Institute of Cytology of the Russian Academy of Sciences, St. Petersburg 194064, Russia
| |
Collapse
|
35
|
Liu D, Saeed A, Majaz S, Ahmad B, Ahmad A, Xie Y. Targeting severe symptoms of early 2023-new outbreak of COVID-19 by classical drug dexamethasone: a potential fatality reducing agent. J Transl Med 2023; 21:348. [PMID: 37237409 DOI: 10.1186/s12967-023-04186-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 05/05/2023] [Indexed: 05/28/2023] Open
Affiliation(s)
| | - Aamir Saeed
- Department of Bioinformatics, Hazara University, Mansehra, 21300, KPK, Pakistan
| | - Sidra Majaz
- Department of Bioinformatics, Hazara University, Mansehra, 21300, KPK, Pakistan
| | - Bashrat Ahmad
- Department of Bioinformatics, Hazara University, Mansehra, 21300, KPK, Pakistan
| | - Ashfaq Ahmad
- Department of Bioinformatics, Hazara University, Mansehra, 21300, KPK, Pakistan.
| | - Yingqiu Xie
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Astana, 010000, Kazakhstan.
| |
Collapse
|
36
|
Nurtay L, Benassi E, Nazir F, Dastan D, Utupova A, Dautov A, Dukenbayev K, Xie Y, Pham TT, Fan H. Novel carbon nanozymes with enhanced phosphatase-like catalytic activity for antimicrobial applications. Discov Nano 2023; 18:76. [PMID: 37382706 DOI: 10.1186/s11671-023-03856-y] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 05/15/2023] [Indexed: 06/30/2023]
Abstract
In this work, Sulfur and Nitrogen co-doped carbon nanoparticles (SN-CNPs) were synthesized by hydrothermal method using dried beet powder as the carbon source. TEM and AFM images indicated that these SN-CNPs form a round-shape ball with an approximate diameter of 50 nm. The presence of Sulfur and Nitrogen in these carbon-based nanoparticles was confirmed by FTIR and XPS analyses. These SN-CNPs were found to have strong phosphatase-like enzymatic activity. The enzymatic behavior of SN-CNPs follows the Michaelis-Menten mechanism with greater vmax and much lower Km values compared to alkaline phosphatase. Their antimicrobial properties were tested on E. coli and L. lactis, with MIC values of 63 μg mL-1 and 250 μg mL-1, respectively. SEM and AFM images of fixed and live E. coli cells revealed that SN-CNPs strongly interacted with the outer membranes of bacterial cells, significantly increasing the cell surface roughness. The chemical interaction between SN-CNPs and phospholipid modeled using quantum mechanical calculations further support our hypothesis that the phosphatase and antimicrobial properties of SN-CNPs are due to the thiol group on the SN-CNPs, which is a mimic of the cysteine-based protein phosphatase. The present work is the first to report carbon-based nanoparticles with strong phosphatase activity and propose a phosphatase natured antimicrobial mechanism. This novel class of carbon nanozymes has the potential to be used for effective catalytic and antibacterial applications.
Collapse
Affiliation(s)
- Lazzat Nurtay
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, Qabanbay Batyr 53, Nursultan, 010000, Kazakhstan
| | - Enrico Benassi
- Novosibirsk State University, Pirogova Str. 2, Novosibirsk, Russia, 630090.
| | - Faisal Nazir
- Department of Biology, School of Sciences and Humanities, Nazarbayev University Nazarbayev University, Qabanbay Batyr 53, Nursultan, 010000, Kazakhstan
| | - Dana Dastan
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, Qabanbay Batyr 53, Nursultan, 010000, Kazakhstan
| | - Assem Utupova
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, Qabanbay Batyr 53, Nursultan, 010000, Kazakhstan
| | - Adilet Dautov
- Department of Biology, School of Sciences and Humanities, Nazarbayev University Nazarbayev University, Qabanbay Batyr 53, Nursultan, 010000, Kazakhstan
| | - Kanat Dukenbayev
- Department of Electrical and Computer Engineering, School of Engineering and Digital Sciences, Nazarbayev University Nazarbayev University, Qabanbay Batyr 53, Nursultan, 010000, Kazakhstan
| | - Yingqiu Xie
- Department of Biology, School of Sciences and Humanities, Nazarbayev University Nazarbayev University, Qabanbay Batyr 53, Nursultan, 010000, Kazakhstan
| | - Tri T Pham
- Department of Biology, School of Sciences and Humanities, Nazarbayev University Nazarbayev University, Qabanbay Batyr 53, Nursultan, 010000, Kazakhstan.
| | - Haiyan Fan
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, Qabanbay Batyr 53, Nursultan, 010000, Kazakhstan.
| |
Collapse
|
37
|
Veremeyko T, Jiang R, He M, Ponomarev ED. Complement C4-deficient mice have a high mortality rate during PTZ-induced epileptic seizures, which correlates with cognitive problems and the deficiency in the expression of Egr1 and other immediate early genes. Front Cell Neurosci 2023; 17:1170031. [PMID: 37234916 PMCID: PMC10206007 DOI: 10.3389/fncel.2023.1170031] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 04/26/2023] [Indexed: 05/28/2023] Open
Abstract
Complement system plays an important role in the immune defense against pathogens; however, recent studies demonstrated an important role of complement subunits C1q, C4, and C3 in normal functions of the central nervous system (CNS) such as non-functional synapse elimination (synapse pruning), and during various neurologic pathologies. Humans have two forms of C4 protein encoded by C4A and C4B genes that share 99.5% homology, while mice have only one C4B gene that is functionally active in the complement cascade. Overexpression of the human C4A gene was shown to contribute to the development of schizophrenia by mediating extensive synapse pruning through the activation C1q-C4-C3 pathway, while C4B deficiency or low levels of C4B expression were shown to relate to the development of schizophrenia and autism spectrum disorders possibly via other mechanisms not related to synapse elimination. To investigate the potential role of C4B in neuronal functions not related to synapse pruning, we compared wildtype (WT) mice with C3- and C4B- deficient animals for their susceptibility to pentylenetetrazole (PTZ)- induced epileptic seizures. We found that C4B (but not C3)-deficient mice were highly susceptible to convulsant and subconvulsant doses of PTZ when compared to WT controls. Further gene expression analysis revealed that in contrast to WT or C3-deficient animals, C4B-deficient mice failed to upregulate expressions of multiple immediate early genes (IEGs) Egrs1-4, c-Fos, c-Jus, FosB, Npas4, and Nur77 during epileptic seizures. Moreover, C4B-deficient mice had low levels of baseline expression of Egr1 on mRNA and protein levels, which was correlated with the cognitive problems of these animals. C4-deficient animals also failed to upregulate several genes downstream of IEGs such as BDNF and pro-inflammatory cytokines IL-1β, IL-6, and TNF. Taken together, our study demonstrates a new role of C4B in the regulation of expression of IEGs and their downstream targets during CNS insults such as epileptic seizures.
Collapse
Affiliation(s)
- Tatyana Veremeyko
- Department of Biomedical Sciences, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Hong Kong, Hong Kong SAR, China
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Astana, Kazakhstan
- Chinese University of Hong Kong Joint Laboratory of Bioresources and Molecular Research of Common Diseases, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Rongcai Jiang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Post Neuro-Injury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China
| | - Mingliang He
- Department of Biomedical Sciences, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Eugene D. Ponomarev
- Department of Biomedical Sciences, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Hong Kong, Hong Kong SAR, China
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Astana, Kazakhstan
- Chinese University of Hong Kong Joint Laboratory of Bioresources and Molecular Research of Common Diseases, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| |
Collapse
|
38
|
Yerniyazov D, Yesmukhambet M, Kenes R, Bukayev A, Shakeel M, Pourafshary P, Musharova D. Polymer Screening for Efficient Water Cut Reduction in a Sandstone Oilfield in Kazakhstan. Polymers (Basel) 2023; 15:polym15081969. [PMID: 37112116 PMCID: PMC10147012 DOI: 10.3390/polym15081969] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/12/2023] [Accepted: 04/18/2023] [Indexed: 04/29/2023] Open
Abstract
Polymer flooding is one of the most widely used and effective enhanced oil recovery techniques. It can improve the macroscopic sweep efficiency of a reservoir by controlling the fractional flow of water. The applicability of polymer flooding for one of the sandstone fields in Kazakhstan was evaluated in this study and polymer screening was carried out to choose the most appropriate polymer among four hydrolyzed polyacrylamide polymer samples. Polymer samples were prepared in Caspian seawater (CSW) and assessed based on rheology, thermal stability, sensitivity to non-ionic materials and oxygen, and static adsorption. All the tests were performed at a reservoir temperature of 63 °C. Based on the results of the screening study, tolerance of a polymer towards high-temperature reservoir conditions, resistance to bacterial activity and dissolved oxygen present in make-up brine, chemical degradation, and reduced adsorption on rock surface were considered the most important screening parameters. As a result of this screening study, one out of four polymers was selected for the target field as it showed a negligible effect of bacterial activity on thermal stability. The results of static adsorption also showed 13-14% lower adsorption of the selected polymer compared to other polymers tested in the study. The results of this study demonstrate important screening criteria to be followed during polymer selection for an oilfield as the polymer should be selected based on not only polymer characteristics but also the polymer interactions with the ionic and non-ionic components of the make-up brine.
Collapse
Affiliation(s)
- Daniyar Yerniyazov
- School of Mining and Geosciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Madi Yesmukhambet
- School of Mining and Geosciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Razida Kenes
- School of Mining and Geosciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Azamat Bukayev
- School of Mining and Geosciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Mariam Shakeel
- School of Mining and Geosciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Peyman Pourafshary
- School of Mining and Geosciences, Nazarbayev University, Astana 010000, Kazakhstan
| | | |
Collapse
|
39
|
Jonbekova D. Government scholarships for international higher education: pathways for social change in Kazakhstan. High Educ (Dordr) 2023:1-17. [PMID: 37362759 PMCID: PMC10089380 DOI: 10.1007/s10734-023-01034-8] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/29/2023] [Indexed: 06/28/2023]
Abstract
Globally, scholarships for international higher education play a critical role in human capital development. While substantial research has documented the benefits such scholarships provide for individuals, their impact on the creation of pathways for social change remains under-researched. This paper bridges this gap by examining the extent to which a government scholarship for international education has created pathways for social change in Kazakhstan. Data were collected through interviews with 67 scholarship alumni. Drawing on Dassin et al.'s (2018) framework for pathways to social change, the findings reveal that international education fosters social change in Kazakhstan in four ways. First, the scholarship program develops local talent and builds agents of change. Second, it widens access to international education, particularly for individuals from marginalized communities, who would otherwise lack access owing to their scarce financial resources. Third, the program develops alumni's cosmopolitan and intercultural competencies and strengthens international collaborations. Finally, it creates associations and groups through which alumni can collectively contribute to society. The findings highlight that while the interviewed alumni foster strong patriotic feelings and are determined to contribute to the prosperity of their country, underdeveloped industries, economic volatility, and top-down bureaucracy in workplaces limit their potential contributions to social changes. These findings may help policymakers and administrators to reconsider and improve on the design and structure of scholarship programs.
Collapse
Affiliation(s)
- Dilrabo Jonbekova
- Graduate School of Education, Nazarbayev University, Astana, Kazakhstan
| |
Collapse
|
40
|
Nugumanova G, Ponomarev ED, Askarova S, Fasler-Kan E, Barteneva NS. Freshwater Cyanobacterial Toxins, Cyanopeptides and Neurodegenerative Diseases. Toxins (Basel) 2023; 15:toxins15030233. [PMID: 36977124 PMCID: PMC10057253 DOI: 10.3390/toxins15030233] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 03/13/2023] [Accepted: 03/19/2023] [Indexed: 03/30/2023] Open
Abstract
Cyanobacteria produce a wide range of structurally diverse cyanotoxins and bioactive cyanopeptides in freshwater, marine, and terrestrial ecosystems. The health significance of these metabolites, which include genotoxic- and neurotoxic agents, is confirmed by continued associations between the occurrence of animal and human acute toxic events and, in the long term, by associations between cyanobacteria and neurodegenerative diseases. Major mechanisms related to the neurotoxicity of cyanobacteria compounds include (1) blocking of key proteins and channels; (2) inhibition of essential enzymes in mammalian cells such as protein phosphatases and phosphoprotein phosphatases as well as new molecular targets such as toll-like receptors 4 and 8. One of the widely discussed implicated mechanisms includes a misincorporation of cyanobacterial non-proteogenic amino acids. Recent research provides evidence that non-proteinogenic amino acid BMAA produced by cyanobacteria have multiple effects on translation process and bypasses the proof-reading ability of the aminoacyl-tRNA-synthetase. Aberrant proteins generated by non-canonical translation may be a factor in neuronal death and neurodegeneration. We hypothesize that the production of cyanopeptides and non-canonical amino acids is a more general mechanism, leading to mistranslation, affecting protein homeostasis, and targeting mitochondria in eukaryotic cells. It can be evolutionarily ancient and initially developed to control phytoplankton communities during algal blooms. Outcompeting gut symbiotic microorganisms may lead to dysbiosis, increased gut permeability, a shift in blood-brain-barrier functionality, and eventually, mitochondrial dysfunction in high-energy demanding neurons. A better understanding of the interaction between cyanopeptides metabolism and the nervous system will be crucial to target or to prevent neurodegenerative diseases.
Collapse
Affiliation(s)
- Galina Nugumanova
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Astana 010000, Kazakhstan
| | - Eugene D Ponomarev
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Astana 010000, Kazakhstan
| | - Sholpan Askarova
- Center for Life Sciences, National Laboratory Astana, Nazarbayev University, Astana 010000, Kazakhstan
| | - Elizaveta Fasler-Kan
- Department of Pediatric Surgery, Children's Hospital, Inselspital Bern, University of Bern, 3010 Bern, Switzerland
| | - Natasha S Barteneva
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Astana 010000, Kazakhstan
- The Environment & Resource Efficiency Cluster (EREC), Nazarbayev University, Astana 010000, Kazakhstan
| |
Collapse
|
41
|
Ghulam U, Nazim F, Farooqui N, Rizwan-ul-Hasan S, Anwar MF, Ahmed K, Jamal A, Kayani HA, Mughal N, Hussain A, Sarria-Santamera A, Abidi SH. Analysis of differential gene expression of pro-inflammatory cytokines in the nasopharyngeal milieu of mild & severe COVID-19 cases. PLoS One 2022; 17:e0279270. [PMID: 36584119 PMCID: PMC9803207 DOI: 10.1371/journal.pone.0279270] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 12/02/2022] [Indexed: 12/31/2022] Open
Abstract
INTRODUCTION A subset of individuals with COVID-19 can suffer from a severe form of the disease requiring breathing support for respiratory failure and even death due to disease complications. COVID-19 disease severity can be attributed to numerous factors, where several studies have associated changes in the expression of serum pro-inflammatory cytokines with disease severity. However, very few studies have associated the changes in expression of pro-inflammatory changes in the nasopharyngeal milieu with disease severity. Therefore, in the current study, we performed differential gene expression analysis of various pro-inflammatory cytokines in the nasopharyngeal milieu of mild & severe COVID-19 cases. MATERIAL AND METHOD For this retrospective, cross-sectional study, a total of 118 nasopharyngeal swab samples, previously collected from mild and severe (based on the WHO criteria) COVID-19 patients were used. A real-time qPCR was performed to determine the viral loads and also evaluate the mRNA expression of eight cytokines (IL-1, IL-2, IL-4, IL-6, IL-10, IFN-γ, TGF-β1, and TNF-α). Subsequently, an unpaired T-test was applied to compare the statistical difference in mean expression of viral loads and each cytokine between the mild and severe groups, while the Pearson correlation test was applied to establish a correlation between disease severity, viral load, and cytokines expression. Similarly, a multivariable logistic regression analysis was performed to assess the relationship between different variables from the data and disease severity. RESULTS Out of 118 samples, 71 were mild, while 47 were severe. The mean viral load between the mild and severe groups was comparable (mild group: 27.07± 5.22; severe group: 26.37 ±7.89). The mRNA expression of cytokines IL-2, IL-6, IFN- γ, and TNF-α was significantly different in the two groups (p<0.05), where the Log2 normalized expression of IL-2, IL-6, IFN- γ, and TNF-α was found to be 2.2-, 16-, 2.3-, and 1.73-fold less in the severe group as compared to the mild group. Furthermore, we also observed a significant positive correlation between all the cytokines in the severe group. The multivariate analysis showed a significant relationship between age, IL-6, and disease severity. CONCLUSION This decreased expression of certain cytokines (IL-2, IL-6, TNF-α, and IFN-γ) in the nasopharyngeal milieu may be considered early biomarkers for disease severity in COVID-19 patients.
Collapse
Affiliation(s)
- Unzela Ghulam
- Department of Biosciences, Shaheed Zulfikar Ali Bhutto Institute of Science and Technology, Karachi, Pakistan
| | - Fizza Nazim
- Department of Biosciences, Shaheed Zulfikar Ali Bhutto Institute of Science and Technology, Karachi, Pakistan
- Department of Biological and Biomedical Sciences, Aga Khan University, Karachi, Pakistan
| | - Nida Farooqui
- Department of Biological and Biomedical Sciences, Aga Khan University, Karachi, Pakistan
| | | | - Muhammad Faraz Anwar
- Department of Biochemistry, Bahria University Medical & Dental College, Karachi, Pakistan
| | - Khalid Ahmed
- Department of Biological and Biomedical Sciences, Aga Khan University, Karachi, Pakistan
| | - Abid Jamal
- Cancer Foundation Hospital, Karachi, Pakistan
| | - Hammad Afzal Kayani
- Department of Biosciences, Shaheed Zulfikar Ali Bhutto Institute of Science and Technology, Karachi, Pakistan
| | - Nouman Mughal
- Department of Biological and Biomedical Sciences, Aga Khan University, Karachi, Pakistan
- Department of Surgery, Aga Khan University, Karachi, Pakistan
| | - Azhar Hussain
- Department of Biological and Biomedical Sciences, Aga Khan University, Karachi, Pakistan
| | | | - Syed Hani Abidi
- Department of Biological and Biomedical Sciences, Aga Khan University, Karachi, Pakistan
- Department of Biomedical Sciences, Nazarbayev University School of Medicine, Astana, Kazakhstan
- * E-mail:
| |
Collapse
|
42
|
Yerlanuly Y, Zhumadilov RY, Danko IV, Janseitov DM, Nemkayeva RR, Kireyev AV, Arystan AB, Akhtanova G, Vollbrecht J, Schopp N, Nurmukhanbetova A, Ramazanov TS, Jumabekov AN, Oreshkin PA, Zholdybayev TK, Gabdullin MT, Brus VV. Effect of Electron and Proton Irradiation on Structural and Electronic Properties of Carbon Nanowalls. ACS Omega 2022; 7:48467-48475. [PMID: 36591155 PMCID: PMC9798766 DOI: 10.1021/acsomega.2c06735] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 12/01/2022] [Indexed: 06/17/2023]
Abstract
In this work, a complex experimental study of the effect of electron and proton ionizing radiation on the properties of carbon nanowalls (CNWs) is carried out using various state-of-the-art materials characterization techniques. CNW layers on quartz substrates were exposed to 5 MeV electron and 1.8 MeV proton irradiation with accumulated fluences of 7 × 1013 e/cm2 and 1012 p/cm2, respectively. It is found that depending on the type of irradiation (electron or proton), the morphology and structural properties of CNWs change; in particular, the wall density decreases, and the sp2 hybridization component increases. The morphological and structural changes in turn lead to changes in the electronic, optical, and electrical characteristics of the material, in particular, change in the work function, improvement in optical transmission, an increase in the surface resistance, and a decrease in the specific conductivity of the CNW films. Lastly, this study highlights the potential of CNWs as nanostructured functional materials for novel high-performance radiation-resistant electronic and optoelectronic devices.
Collapse
Affiliation(s)
- Yerassyl Yerlanuly
- Kazakh-British
Technical University, Almaty 050000, Kazakhstan
- Al-Farabi
Kazakh National University, Almaty 050040, Kazakhstan
- Department
of Physics, Nazarbayev University, Nur-Sultan City 010000, Kazakhstan
| | - Rakhymzhan Ye Zhumadilov
- Kazakh-British
Technical University, Almaty 050000, Kazakhstan
- Al-Farabi
Kazakh National University, Almaty 050040, Kazakhstan
| | - Igor V. Danko
- Institute
of Nuclear Physics, Almaty 050032, Kazakhstan
| | | | - Renata R. Nemkayeva
- Kazakh-British
Technical University, Almaty 050000, Kazakhstan
- Al-Farabi
Kazakh National University, Almaty 050040, Kazakhstan
| | | | | | - Gulnur Akhtanova
- Department
of Physics, Nazarbayev University, Nur-Sultan City 010000, Kazakhstan
| | | | - Nora Schopp
- University
of California Santa Barbara, Santa Barbara, California 93106, United States
| | - Aliya Nurmukhanbetova
- Energetic
Cosmos Laboratory, Nazarbayev University, Nur-Sultan City 010000, Kazakhstan
| | | | - Askhat N. Jumabekov
- Department
of Physics, Nazarbayev University, Nur-Sultan City 010000, Kazakhstan
| | | | | | | | - Viktor V. Brus
- Department
of Physics, Nazarbayev University, Nur-Sultan City 010000, Kazakhstan
| |
Collapse
|
43
|
Talipova D, Smagulova A, Poddighe D. Toll-like Receptors and Celiac Disease. Int J Mol Sci 2022; 24:265. [PMID: 36613709 PMCID: PMC9820541 DOI: 10.3390/ijms24010265] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/10/2022] [Accepted: 12/13/2022] [Indexed: 12/28/2022] Open
Abstract
Celiac disease (CD) is an immune-mediated disorder triggered by dietary gluten intake in some genetically predisposed individuals; however, the additional non-HLA-related genetic factors implicated in CD immunopathogenesis are not well-defined. The role of the innate immune system in autoimmunity has emerged in the last few years. Genetic polymorphisms of some pattern-recognition receptors, including toll-like receptors (TLRs), have been associated with several autoimmune disorders. In this review, we summarize and discuss the evidence from basic research and clinical studies as regards the potential role of TLRs in CD immunopathogenesis. The evidence supporting the role of TLRs in CD immunopathogenesis is limited, especially in terms of basic research. However, differences in the expression and activation of TLRs between active CD patients from one side, and controls and treated CD patients from the other side, have been described in some clinical studies. Therefore, TLRs may be part of those non-HLA-related genetic factors implicated in CD etiopathogenesis, considering their potential role in the interaction between the host immune system and some environmental factors (including viral infections and gut microbiota), which are included in the list of candidate agents potentially contributing to the determination of CD risk in genetically predisposed individuals exposed to dietary gluten intake. Further basic research and clinical studies focused on TLRs in the context of CD and other gluten-related disorders are needed.
Collapse
Affiliation(s)
- Diana Talipova
- Department of Medicine, Nazarbayev University School of Medicine, Astana 010000, Kazakhstan
| | - Aiganym Smagulova
- Department of Medicine, Nazarbayev University School of Medicine, Astana 010000, Kazakhstan
| | - Dimitri Poddighe
- Department of Medicine, Nazarbayev University School of Medicine, Astana 010000, Kazakhstan
- Clinical Academic Department of Pediatrics, National Research Center for Maternal and Child Health, University Medical Center, Astana 010000, Kazakhstan
| |
Collapse
|
44
|
Akhmetova A, Myrzakhmetov B, Wang Y, Bakenov Z, Mentbayeva A. Development of Quaternized Chitosan Integrated with Nanofibrous Polyacrylonitrile Mat as an Anion-Exchange Membrane. ACS Omega 2022; 7:45371-45380. [PMID: 36530230 PMCID: PMC9753170 DOI: 10.1021/acsomega.2c05961] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 11/17/2022] [Indexed: 06/05/2023]
Abstract
A two-phase anion-exchange membrane was prepared from quaternized chitosan (QCS) integrated with an electrospun polyacrylonitrile (PAN) scaffold by spin coating. To synthesize QCS, glycidyltrimethylammonium chloride in various amounts was introduced into the structure of CS. The characterization of the cast cross-linked QCS (CQCS) membranes by impedance spectroscopy revealed the ionic conductivity (IC) in the range of 2.8 × 10-4 to 8.2 × 10-4 S cm-1 and the degree of quaternization (DQ) of 26.4-51.0%, where the CQCS film with the DQ of 51.0% showed excellent performance. When CQCS was reinforced with a PAN fiber mat, the newly developed composite membrane demonstrated the highest IC of 34 × 10-4 S cm-1 at 80 °C, low swelling, and an almost eightfold increase in tensile strength at a fully hydrated state compared to pristine materials. Moreover, the CQCS/PAN membrane was chemically stable and revealed increasing hydroxide transport during 1 month immersion in alkaline media.
Collapse
Affiliation(s)
- Aktilek Akhmetova
- Department
of Chemical and Materials Engineering, School of Engineering and Digital
Sciences, Nazarbayev University, Nur-Sultan010000, Kazakhstan
| | - Bauyrzhan Myrzakhmetov
- Center
for Energy and Advanced Materials Science, National Laboratory Astana, Nazarbayev University, Nur-Sultan010000, Kazakhstan
| | - Yanwei Wang
- Department
of Chemical and Materials Engineering, School of Engineering and Digital
Sciences, Nazarbayev University, Nur-Sultan010000, Kazakhstan
- Center
for Energy and Advanced Materials Science, National Laboratory Astana, Nazarbayev University, Nur-Sultan010000, Kazakhstan
| | - Zhumabay Bakenov
- Department
of Chemical and Materials Engineering, School of Engineering and Digital
Sciences, Nazarbayev University, Nur-Sultan010000, Kazakhstan
- Center
for Energy and Advanced Materials Science, National Laboratory Astana, Nazarbayev University, Nur-Sultan010000, Kazakhstan
| | - Almagul Mentbayeva
- Department
of Chemical and Materials Engineering, School of Engineering and Digital
Sciences, Nazarbayev University, Nur-Sultan010000, Kazakhstan
| |
Collapse
|
45
|
Uğurlu K, Brzeczek T. Distorted probability operator for dynamic portfolio optimization in times of socio-economic crisis. Cent Eur J Oper Res 2022; 31:1-18. [PMID: 36531521 PMCID: PMC9734642 DOI: 10.1007/s10100-022-00834-0] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 11/17/2022] [Indexed: 06/17/2023]
Abstract
A robust optimal control of discrete time Markov chains with finite terminal T and bounded costs or wealth using probability distortion is studied. The time inconsistency of these distortion operators and hence its lack of dynamic programming are discussed. Due to that, dynamic versions of these operators are introduced, and its availability for dynamic programming is demonstrated. Based on dynamic programming algorithm, existence of the optimal policy is justified and an application of the theory to portfolio optimization along with a numerical study is also presented.
Collapse
Affiliation(s)
- Kerem Uğurlu
- Department of Mathematics, Nazarbayev University, Astana, Kazakhstan
| | - Tomasz Brzeczek
- Engineering Management Department, Poznan University of Technology, Poznan, Poland
| |
Collapse
|
46
|
Askapuli A, Vilar M, Garcia-Ortiz H, Zhabagin M, Sabitov Z, Akilzhanova A, Ramanculov E, Schamiloglu U, Martinez-Hernandez A, Contreras-Cubas C, Barajas-Olmos F, Schurr TG, Zhumadilov Z, Flores-Huacuja M, Orozco L, Hawks J, Saitou N. Kazak mitochondrial genomes provide insights into the human population history of Central Eurasia. PLoS One 2022; 17:e0277771. [PMID: 36445929 PMCID: PMC9707748 DOI: 10.1371/journal.pone.0277771] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 11/03/2022] [Indexed: 11/30/2022] Open
Abstract
As a historical nomadic group in Central Asia, Kazaks have mainly inhabited the steppe zone from the Altay Mountains in the East to the Caspian Sea in the West. Fine scale characterization of the genetic profile and population structure of Kazaks would be invaluable for understanding their population history and modeling prehistoric human expansions across the Eurasian steppes. With this mind, we characterized the maternal lineages of 200 Kazaks from Jetisuu at mitochondrial genome level. Our results reveal that Jetisuu Kazaks have unique mtDNA haplotypes including those belonging to the basal branches of both West Eurasian (R0, H, HV) and East Eurasian (A, B, C, D) lineages. The great diversity observed in their maternal lineages may reflect pivotal geographic location of Kazaks in Eurasia and implies a complex history for this population. Comparative analyses of mitochondrial genomes of human populations in Central Eurasia reveal a common maternal genetic ancestry for Turko-Mongolian speakers and their expansion being responsible for the presence of East Eurasian maternal lineages in Central Eurasia. Our analyses further indicate maternal genetic affinity between the Sherpas from the Tibetan Plateau with the Turko-Mongolian speakers.
Collapse
Affiliation(s)
- Ayken Askapuli
- School of Sciences and Humanities, Nazarbayev University, Astana, Kazakhstan
- National Center for Biotechnology, Astana, Kazakhstan
- National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
- Department of Integrative Biology, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Miguel Vilar
- The Genographic Project, National Geographic Society, Washington, DC, United States of America
- Department of Anthropology, University of Maryland, College Park, Maryland, United States of America
| | - Humberto Garcia-Ortiz
- Immunogenomics and Metabolic Diseases Laboratory, National Institute of Genomic Medicine, Mexico City, Mexico
| | - Maxat Zhabagin
- School of Sciences and Humanities, Nazarbayev University, Astana, Kazakhstan
- National Center for Biotechnology, Astana, Kazakhstan
- National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
| | | | - Ainur Akilzhanova
- National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
| | - Erlan Ramanculov
- School of Sciences and Humanities, Nazarbayev University, Astana, Kazakhstan
- National Center for Biotechnology, Astana, Kazakhstan
| | - Uli Schamiloglu
- School of Sciences and Humanities, Nazarbayev University, Astana, Kazakhstan
| | - Angelica Martinez-Hernandez
- Immunogenomics and Metabolic Diseases Laboratory, National Institute of Genomic Medicine, Mexico City, Mexico
| | - Cecilia Contreras-Cubas
- Immunogenomics and Metabolic Diseases Laboratory, National Institute of Genomic Medicine, Mexico City, Mexico
| | - Francisco Barajas-Olmos
- Immunogenomics and Metabolic Diseases Laboratory, National Institute of Genomic Medicine, Mexico City, Mexico
| | - Theodore G. Schurr
- Department of Anthropology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Zhaxybay Zhumadilov
- National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
- School of Medicine, Nazarbayev University, Astana, Kazakhstan
| | - Marlen Flores-Huacuja
- Immunogenomics and Metabolic Diseases Laboratory, National Institute of Genomic Medicine, Mexico City, Mexico
| | - Lorena Orozco
- Immunogenomics and Metabolic Diseases Laboratory, National Institute of Genomic Medicine, Mexico City, Mexico
| | - John Hawks
- Department of Integrative Biology, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
- Department of Anthropology, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Naruya Saitou
- Population Genetics Laboratory, National Institute of Genetics, Mishima, Shizuoka, Japan
- Department of Biological Sciences, Graduate School of Science, University of Tokyo, Tokyo, Japan
- Advanced Medical Research Center, Faculty of Medicine, University of the Ryukyus, Okinawa Ken, Japan
| |
Collapse
|
47
|
Tolganbek N, Sarsembina M, Nurpeissova A, Kanamura K, Bakenov Z, Mentbayeva A. Effect of a layer-by-layer assembled ultra-thin film on the solid electrolyte and Li interface. Nanoscale Adv 2022; 4:4606-4616. [PMID: 36341286 PMCID: PMC9595195 DOI: 10.1039/d2na00521b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 09/09/2022] [Indexed: 06/16/2023]
Abstract
Advanced all-solid-state batteries are considered as the most preferable power source for the next generation devices. Such batteries demand consumption of electrode materials with high energy and power density. One of the excellent solutions is the utilization of Li metal as anode which provides opportunity to fulfill such requirements. Yet, obstacles such as interfacial impedance and reactivity of Li metal with promising solid electrolytes prevent the consumption of the Li anode. Despite its outstanding stability under ambient conditions, high ionic conductivity and facile synthesis methods, NASICON-type Li1.3Al0.3Ti1.7(PO4)3 also suffers from the above mentioned problems. In this work, these critical issues were resolved by applying an artificial protective interlayer. Herein, the layer-by-layer polymer assembly approach of the ultra-thin interlayer of (PAA/PEO)30 on either side of solid electrolyte pellets simultaneously is presented. The introduction of the protective layer prevented a formation of mixed conduction interphase and effectively decreased the interfacial impedance. A symmetric cell with Li metal electrodes performed over 600 hours at 0.1 mA cm-2. Furthermore, an all-solid-state Li metal battery, assembled with the modified LATP solid electrolyte and LiFePO4 cathode, demonstrated an excellent electrochemical performance with an initial discharge capacity of 115 mA h g-1 and a capacity retention of 93% over 20 cycles with a coloumbic efficiency of almost 100%. The LATP with the (PAA/PEO)30 coating exhibited electrochemical stability up to 5 V.
Collapse
Affiliation(s)
- Nurbol Tolganbek
- School of Engineering and Digital Sciences, Nazarbayev University Nur-Sultan Kazakhstan
| | - Madina Sarsembina
- School of Engineering and Digital Sciences, Nazarbayev University Nur-Sultan Kazakhstan
| | | | | | - Zhumabay Bakenov
- School of Engineering and Digital Sciences, Nazarbayev University Nur-Sultan Kazakhstan
- National Laboratory Astana, Nazarbayev University Nur-Sultan Kazakhstan
| | - Almagul Mentbayeva
- School of Engineering and Digital Sciences, Nazarbayev University Nur-Sultan Kazakhstan
| |
Collapse
|
48
|
Yerkenov T, Tazikeh S, Tatar A, Shafiei A. Asphaltene Precipitation Prediction during Bitumen Recovery: Experimental Approach versus Population Balance and Connectionist Models. ACS Omega 2022; 7:33123-33137. [PMID: 36157766 PMCID: PMC9494634 DOI: 10.1021/acsomega.2c03249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 08/24/2022] [Indexed: 06/16/2023]
Abstract
Deasphalting bitumen using paraffinic solvent injection is a commonly used technique to reduce both its viscosity and density and ease its flow through pipelines. Common modeling approaches for asphaltene precipitation prediction such as population balance model (PBM) contains complex mathematical relation and require conducting precise experiments to define initial and boundary conditions. Machine learning (ML) approach is considered as a robust, fast, and reliable alternative modeling approach. The main objective of this research work was to model the effect of paraffinic solvent injection on the amount of asphaltene precipitation using ML and PBM approaches. Five hundred and ninety (590) experimental data were collected from the literature for model development. The gathered data was processed using box plot, data scaling, and data splitting. Data pre-processing led to the use of 517 data points for modeling. Then, multilayer perceptron, random forest, decision tree, support vector machine, committee machine intelligent system optimized by annealing, and random search techniques were used for modeling. Precipitant molecular weight, injection rate, API gravity, pressure, C5 asphaltene content, and temperature were determined as the most relevant features for the process. Although the results of the PBM model are precise, the AI/ML model (CMIS) is the preferred model due to its robustness, reliability, and relative accuracy. The committee machine intelligent system is the superior model among the developed smart models with an RMSE of 1.7% for the testing dataset and prediction of asphaltene precipitation during bitumen recovery.
Collapse
|
49
|
Tazikeh S, Davoudi A, Shafiei A, Parsaei H, Atabaev TS, Ivakhnenko OP. A Comparison between the Perturbed-Chain Statistical Associating Fluid Theory Equation of State and Machine Learning Modeling Approaches in Asphaltene Onset Pressure and Bubble Point Pressure Prediction during Gas Injection. ACS Omega 2022; 7:30113-30124. [PMID: 36061711 PMCID: PMC9434618 DOI: 10.1021/acsomega.2c03192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
Predicting asphaltene onset pressure (AOP) and bubble point pressure (Pb) is essential for optimization of gas injection for enhanced oil recovery. Pressure-Volume-Temperature or PVT studies along with equations of state (EoSs) are widely used to predict AOP and Pb. However, PVT experiments are costly and time-consuming. The perturbed-chain statistical associating fluid theory or PC-SAFT is a sophisticated EoS used for prediction of the AOP and Pb. However, this method is computationally complex and has high data requirements. Hence, developing precise and reliable smart models for prediction of the AOP and Pb is inevitable. In this paper, we used machine learning (ML) methods to develop predictive tools for the estimation of the AOP and Pb using experimental data (AOP data set: 170 samples; Pb data set: 146 samples). Extra trees (ET), support vector machine (SVM), decision tree, and k-nearest neighbors ML methods were used. Reservoir temperature, reservoir pressure, SARA fraction, API gravity, gas-oil ratio, fluid molecular weight, monophasic composition, and composition of gas injection are considered as input data. The ET (R 2: 0.793, RMSE: 7.5) and the SVM models (R 2: 0.988, RMSE: 0.76) attained more reliable results for estimation of the AOP and Pb, respectively. Generally, the accuracy of the PC-SAFT model is higher than that of the AI/ML models. However, our results confirm that the AI/ML approach is an acceptable alternative for the PC-SAFT model when we face lack of data and/or complex mathematical equations. The developed smart models are accurate and fast and produce reliable results with lower data requirements.
Collapse
Affiliation(s)
- Simin Tazikeh
- Petroleum
Engineering Program, School of Mining and Geosciences, Nazarbayev University, 53 Kabanbay Batyr Avenue, Nur-Sultan 010000, Kazakhstan
| | - Abdollah Davoudi
- Department
of Petroleum Engineering, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz 71348-14336, Iran
| | - Ali Shafiei
- Petroleum
Engineering Program, School of Mining and Geosciences, Nazarbayev University, 53 Kabanbay Batyr Avenue, Nur-Sultan 010000, Kazakhstan
| | - Hossein Parsaei
- Department
of Medical Physics and Engineering, School of Medicine, Shiraz University of Medical Sciences, Shiraz 71348-14336, Iran
| | - Timur Sh. Atabaev
- Department
of Chemistry, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
| | - Oleksandr P. Ivakhnenko
- Department
of Petroleum Engineering, Kazakh British
Technical University, Almaty 050000, Kazakhstan
| |
Collapse
|
50
|
Sypabekova M, Amantayeva A, Vangelista L, González-Vila Á, Caucheteur C, Tosi D. Ultralow Limit Detection of Soluble HER2 Biomarker in Serum with a Fiber-Optic Ball-Tip Resonator Assisted by a Tilted FBG. ACS Meas Sci Au 2022; 2:309-316. [PMID: 36785571 PMCID: PMC9885947 DOI: 10.1021/acsmeasuresciau.2c00008] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
An optical-fiber biosensor has been developed for the detection of the breast cancer biomarker soluble human epidermal growth factor receptor-2 (sHER2). The sensor was fabricated by combining a tilted fiber Bragg grating (TFBG) with a ball resonator, allowing us to achieve an excellent sensitivity compared to other optical-fiber-based sensors. The sensor exhibits a resonance comb excited by the TFBG and the spectral profile of the ball resonator. The detection of sHER2 at extremely low concentrations was carried out by tracking the amplitude change of selected resonances. The therapeutic anti-HER2 monoclonal antibody Trastuzumab has been used to functionalize the biosensor with silane surface chemistry. The sensor features a sensitivity of 4034 dB/RIU with a limit of detection (LoD) in buffer and in a 1/10 diluted serum of 151.5 ag/mL and 3.7 pg/mL, respectively. At relatively high protein concentrations (64 ng/mL) binding to sHER (7.36 dB) as compared to control proteins (below 0.7 dB) attested the high specificity of sHER2 detection.
Collapse
Affiliation(s)
- Marzhan Sypabekova
- Nazarbayev
University School of Medicine, 53 Kabanbay Batyr Avenue, 010000 Nur-Sultan, Kazakhstan
- Nazarbayev
University School of Engineering and Digital Sciences, 53 Kabanbay Batyr Avenue, 010000 Nur-Sultan, Kazakhstan
- Baylor
Research and Innovative Collaborative, Baylor
University, 100 Research
Pkwy, Waco, Texas 76704, United States
| | - Aida Amantayeva
- Nazarbayev
University School of Engineering and Digital Sciences, 53 Kabanbay Batyr Avenue, 010000 Nur-Sultan, Kazakhstan
| | - Luca Vangelista
- Nazarbayev
University School of Medicine, 53 Kabanbay Batyr Avenue, 010000 Nur-Sultan, Kazakhstan
| | - Álvaro González-Vila
- Electromagnetism
and Telecommunication Department, University
of Mons, Boulevard Dolez 31, 7000 Mons, Belgium
| | - Christophe Caucheteur
- Electromagnetism
and Telecommunication Department, University
of Mons, Boulevard Dolez 31, 7000 Mons, Belgium
| | - Daniele Tosi
- Nazarbayev
University School of Engineering and Digital Sciences, 53 Kabanbay Batyr Avenue, 010000 Nur-Sultan, Kazakhstan
- National
Laboratory Astana, Laboratory of Biosensors and Bioinstruments, 010000 Nur-Sultan, Kazakhstan
| |
Collapse
|