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Haseen U, Ali SG, Khan RA, Alsalme A, Koo BH, Ahmad H. Preconcentration and selective extraction of trace Hg(ii) by polymeric g-C 3N 4 nanosheet-packed SPE column. RSC Adv 2024; 14:1593-1601. [PMID: 38179094 PMCID: PMC10765282 DOI: 10.1039/d3ra05512d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 12/02/2023] [Indexed: 01/06/2024] Open
Abstract
In this study, we successfully synthesized polymeric graphitic carbon nitride (g-C3N4) nanosheets through thermal means and proposed their application in solid-phase extraction (SPE) for the enrichment of trace Hg(ii). The nanosheets underwent characterization using scanning electron microscopy, tunnelling electron microscopy, and energy-dispersive X-ray spectroscopy. The column packed with polymeric carbon nitride nanosheets demonstrated effective extraction of trace Hg(ii) ions from complex samples. The g-C3N4 nanosheets possess a zeta potential value of -20 mV, enabling strong interaction with positively charged divalent Hg(ii) ions. This interaction leads to the formation of stable chelates with the nitrogen atoms present in the polytriazine and heptazine units of the material. The proposed method exhibited a high preconcentration limit of 0.33 μg L-1, making it suitable for analysing trace amounts of Hg(ii) ions. Moreover, the method's applicability was confirmed through successful analysis of real samples, achieving an impressive preconcentration factor of 200. The detection limit for trace Hg(ii) ions was determined to be 0.6 μg L-1. To assess the accuracy of the method, we evaluated its performance by recovering spiked amounts of Hg(ii) and by analysing certified reference materials. The results indicated excellent precision, with RSD consistently below 5% for all the analyses conducted. In conclusion, the thermally synthesized polymeric carbon nitride nanosheets present a promising approach for solid-phase extraction and preconcentration of trace Hg(ii) from real samples. The method showcases high efficiency, sensitivity, and accuracy, making it a valuable tool for environmental and analytical applications.
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Affiliation(s)
- Uzma Haseen
- Department of Chemistry, Aligarh Muslim University Aligarh 202002 India
| | - Syed Ghazanfar Ali
- Department of Microbiology, Jawaharlal Nehru Medical College, Aligarh Muslim University Aligarh 202002 India
| | - Rais Ahmad Khan
- Department of Chemistry, College of Science, King Saud University Riyadh 11451 Saudi Arabia
| | - Ali Alsalme
- Department of Chemistry, College of Science, King Saud University Riyadh 11451 Saudi Arabia
| | - Bon Heun Koo
- School of Materials Science and Engineering, Changwon National University Changwon 51140 Gyeongnam South Korea
| | - Hilal Ahmad
- Faculty of Applied Sciences, Ton Duc Thang University Ho Chi Minh City 700000 Vietnam
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Zhang Q, Ye M, Wang L, Jiang D, Yao S, Lin D, Chen Y, Feng S, Yang T, Hu J. Characterization of Drug Resistance in Chronic Myeloid Leukemia Cells Based on Laser Tweezers Raman Spectroscopy. APPLIED SPECTROSCOPY 2021; 75:1296-1304. [PMID: 34076539 DOI: 10.1177/00037028211024581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Multidrug resistance is highly associated with poor prognosis of chronic myeloid leukemia. This work aims to explore whether the laser tweezers Raman spectroscopy (LTRS) could be practical in separating adriamycin-resistant chronic myeloid leukemia cells K562/adriamycin from its parental cells K562, and to explore the potential mechanisms. Detection of LTRS initially reflected the spectral differences caused by chemoresistance including bands assigned to carbohydrates, amino acid, protein, lipids, and nucleic acid. In addition, principal components analysis as well as the classification and regression trees algorithms showed that the specificity and sensitivity were above 90%. Moreover, the band data-based classification and regression tree model and receiver operating characteristic curve further determined some important bands and band intensity ratios to be reliable indexes in discriminating K562 chemoresistance status. Finally, we highlighted three metabolism pathways correlated with chemoresistance. This work demonstrates that the label-free LTRS analysis combined with multivariate statistical analyses have great potential to be a novel analytical strategy at the single-cell level for rapid evaluation of the chemoresistance status of K562 cells.
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Affiliation(s)
- Qian Zhang
- Department of Laboratory Medicine, 74551Fujian Medical University, Fuzhou, China
| | - Minlu Ye
- Department of Laboratory Medicine, 74551Fujian Medical University, Fuzhou, China
| | - Lingyan Wang
- Department of Hematology, Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, 74551Fujian Medical University Union Hospital, Fuzhou, China
| | - Dongmei Jiang
- Department of Medical Imaging Technology, 74551Fujian Medical University, Fuzhou, China
| | - Shuting Yao
- Department of Medical Imaging Technology, 74551Fujian Medical University, Fuzhou, China
| | - Donghong Lin
- Department of Laboratory Medicine, 74551Fujian Medical University, Fuzhou, China
| | - Yang Chen
- Department of Laboratory Medicine, 74551Fujian Medical University, Fuzhou, China
| | - Shangyuan Feng
- Key Laboratory of Optoelectronic Science and Technology for Medicine, Ministry of Education, Fujian Provincial Key Laboratory for Photonics Technology, 12425Fujian Normal University, Fuzhou, China
| | - Ting Yang
- Department of Hematology, Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, 74551Fujian Medical University Union Hospital, Fuzhou, China
| | - Jianda Hu
- Department of Laboratory Medicine, 74551Fujian Medical University, Fuzhou, China
- Department of Hematology, Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, 74551Fujian Medical University Union Hospital, Fuzhou, China
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Lukose J, Shastry S, Mithun N, Mohan G, Ahmed A, Chidangil S. Red blood cells under varying extracellular tonicity conditions: an optical tweezers combined with micro-Raman study. Biomed Phys Eng Express 2020; 6:015036. [PMID: 33438624 DOI: 10.1088/2057-1976/ab6e1a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Extracellular tonicity has a significant influence on human red blood cell deformation capability. Advancements in the area of laser physics and optical trapping have opened up a plethora of applications for understanding cell structure and dynamics. Here, Raman Tweezers technique was employed to investigate the impact of extracellular tonicity by exposing human red blood cells to both hypertonic and hypotonic intravenous fluids. Heme aggregation was observed in hypertonic saline solution, accompanied with damage in membrane protein. Loss of intracellular hemoglobin in hypotonic solution was evident from the decrease in porphyrin breathing mode present at 752 cm-1. Oxygen binding to the central iron in the red blood cell heme was also affected under both hyper/hypo tonicity conditions. Morphological deviation of discocytes to echinocytes/spherocytes were also evident from quantitative phase imaging. Principal component analysis have showed clear differentiation of samples in order to classify the control erythrocytes and the tonicity stressed erythrocytes. Present study has also demonstrated the application of Raman Tweezers spectroscopy as a potential tool for probing red blood cell under different stress conditions.
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Affiliation(s)
- Jijo Lukose
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal, Karnataka-576104., India
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N M, Lukose J, Shastry S, Mohan G, Chidangil S. Human red blood cell behaviour in hydroxyethyl starch: probed by single cell spectroscopy. RSC Adv 2020; 10:31453-31462. [PMID: 35520664 PMCID: PMC9056550 DOI: 10.1039/d0ra05842d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Accepted: 08/17/2020] [Indexed: 01/18/2023] Open
Abstract
Hydroxyethyl starch (HES) is a commonly used intravenous fluid in hospital settings. The merits and demerits of its application is still a debatable topic. Investigating the interaction of external agents like intravenous fluids with blood cells is of great significance in clinical environments. Micro-Raman spectroscopy combined with an optical tweezers technique has been utilized for conducting systematic investigations of single live red blood cells (RBCs) under the influence of external stress agents. The present work deals with a detailed biophysical study on the response of human live red blood cells in hydroxyethyl starch using optical techniques. Morphological changes in red blood cells were monitored using quantitate phase imaging techniques. Micro-Raman studies suggest that there is a significant reduction in the oxy-haemoglobin level in red blood cells suspended in HES. The spectra recorded by using different probe laser powers has shown that the cells are more vulnerable in HES under the influence of externally induced stress than in blood plasma. In addition, the spectral results support the possibility of heme aggregation and membrane damage for red blood cells in HES under externally induced stress. Principle component analysis performed on the Raman spectra were able to effectively discriminate between red blood cells in HES and in blood plasma. The use of Raman tweezers can be highly beneficial in elucidating biochemical alterations happening in live, human red blood cell. Hydroxyethyl starch (HES) is a commonly used intravenous fluid in hospital settings.![]()
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Affiliation(s)
- Mithun N
- Centre of Excellence for Biophotonics
- Department of Atomic and Molecular Physics
- Manipal Academy of Higher Education
- India
| | - Jijo Lukose
- Centre of Excellence for Biophotonics
- Department of Atomic and Molecular Physics
- Manipal Academy of Higher Education
- India
| | - Shamee Shastry
- Department of Immunohematology and Blood Transfusion
- Kasturba Medical College, Manipal
- Manipal Academy of Higher Education
- Manipal
- India
| | - Ganesh Mohan
- Department of Immunohematology and Blood Transfusion
- Kasturba Medical College, Manipal
- Manipal Academy of Higher Education
- Manipal
- India
| | - Santhosh Chidangil
- Centre of Excellence for Biophotonics
- Department of Atomic and Molecular Physics
- Manipal Academy of Higher Education
- India
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