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Ou Q, Jiang L, Dou Y, Yang W, Han M, Ni Q, Tang J, Qian K, Liu G. Application of surface-enhanced Raman spectroscopy to human serum for diagnosing liver cancer. Spectrochim Acta A Mol Biomol Spectrosc 2024; 308:123702. [PMID: 38056183 DOI: 10.1016/j.saa.2023.123702] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 11/17/2023] [Accepted: 11/26/2023] [Indexed: 12/08/2023]
Abstract
This study investigates the application of surface-enhanced Raman spectroscopy (SERS) in the diagnosis of liver cancer using Ag@SiO2 nanoparticles as SERS substrates. A SERS test was conducted on serum samples obtained from patients with liver cancer and healthy individuals. After repeated several times experiments, it was found that the best SERS spectrum was obtained when the volume ratio of serum to deionized water was 1:2. Moreover, data preprocessing was performed on the tested SERS spectrum, and the preprocessed spectral data were combined with principal component analysis (PCA), partial least-squares discriminant analysis (PLS-DA), and orthogonal partial least squares discriminant analysis (OPLS-DA) for further analysis to classify the serum samples of patients with liver cancer and healthy individuals. The results showed that the classification effect of standard normal variate spectral data combined with the OPLS-DA was the best for the serum samples, with a classification accuracy of 97.98%, sensitivity of 97.14%, and specificity of 98.44%. Therefore, the SERS technology can be developed as a favorable method for the accurate diagnosis of liver cancer in the future.
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Affiliation(s)
- Quanhong Ou
- Yunnan Key Laboratory of Opto-electronic Information Technology, School of Physics and Electronic Information, Yunnan Normal University, Kunming 650500, China
| | - Liqin Jiang
- Yunnan Key Laboratory of Opto-electronic Information Technology, School of Physics and Electronic Information, Yunnan Normal University, Kunming 650500, China
| | - Youfeng Dou
- Yunnan Key Laboratory of Opto-electronic Information Technology, School of Physics and Electronic Information, Yunnan Normal University, Kunming 650500, China
| | - Weiye Yang
- Yunnan Key Laboratory of Opto-electronic Information Technology, School of Physics and Electronic Information, Yunnan Normal University, Kunming 650500, China
| | - Mingcheng Han
- Yunnan Key Laboratory of Opto-electronic Information Technology, School of Physics and Electronic Information, Yunnan Normal University, Kunming 650500, China
| | - Qinru Ni
- Yunnan Key Laboratory of Opto-electronic Information Technology, School of Physics and Electronic Information, Yunnan Normal University, Kunming 650500, China
| | - Junqi Tang
- Yunnan Key Laboratory of Opto-electronic Information Technology, School of Physics and Electronic Information, Yunnan Normal University, Kunming 650500, China
| | - Kai Qian
- Department of Thoracic Surgery, The First People's Hospital of Yunnan Province, Kunming 650100, China.
| | - Gang Liu
- Yunnan Key Laboratory of Opto-electronic Information Technology, School of Physics and Electronic Information, Yunnan Normal University, Kunming 650500, China.
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Rodrigues MC, Rolim WR, Viana MM, Souza TR, Gonçalves F, Tanaka CJ, Bueno-Silva B, Seabra AB. Biogenic synthesis and antimicrobial activity of silica-coated silver nanoparticles for esthetic dental applications. J Dent 2020; 96:103327. [PMID: 32229160 DOI: 10.1016/j.jdent.2020.103327] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 03/19/2020] [Accepted: 03/21/2020] [Indexed: 10/24/2022] Open
Abstract
OBJECTIVES this study aimed to synthesize AgNPs from green tea (GT) extract, forming GT-AgNPs, and to coat their surfaces with silica, resulting in light-colored Ag@SiO2 nanoparticles. MATERIALS AND METHODS particles were characterized and tested for minimal inhibitory concentration (MIC), biofilm formation against Streptococcus mutans and cytotoxicity evaluation on dental pulp fibroblasts. RESULTS X-ray diffraction (XRD) confirmed the formation of pure AgNPs, whereas energy dispersive X-ray spectroscopy (EDS) mapped their elemental atoms. Dynamic light scattering (DLS) demonstrated formation of particles at nanoscale, with moderate polydispersity and negative zeta potential, in agreement with nanoparticle tracking analysis (NTA) size measurements. Fourier-transformed infrared (FTIR) spectroscopy confirmed the successful condensation of silica, which significantly increased surface area by 50%, as assayed by surface area analysis (BET). Thermogravimetric analysis showed a 18%-mass of silica on the surface of Ag@SiO2NPs. Transmission electron microscopy (TEM) displayed the spherical shape of nanoparticles and average size of 11 nm for GT-AgNPs and Ag@SiO2NPs. Ag@SiO2NPs demonstrated potent antimicrobial action against S. mutans, with MIC determined as 600 μg/mL, and inhibition of approximately 44% (p < 0.05) of biofilm formation. At the MIC concentrations, both NPs did not exhibit cytotoxicity. CONCLUSION Ag@SiO2NPs might have a useful application in dental materials. CLINICAL SIGNIFICANCE The possibility of incorporating antimicrobial properties in restorative materials without compromising esthetics makes the AgNPs@SiO2 NPs promising agents against S. mutans biofilm formation, hence the prevention of dental caries. This represents a great step towards the development of more interactive biomaterials in dentistry to overcome clinical problems.
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Affiliation(s)
- Marcela Charantola Rodrigues
- Postgraduate Department of Cruzeiro do Sul University (UNICSUL), Galvão Bueno St., 868, 01506-000, São Paulo, SP, Brazil; Municipal University of São Caetano do Sul (USCS), Santo Antônio St., 50, 09521-160, São Caetano do Sul, SP, Brazil.
| | - Wallace Rosado Rolim
- Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), dos Estados Ave., 5001, 09210-580, Santo André, SP, Brazil
| | - Marina Mariante Viana
- Postgraduate Department of Cruzeiro do Sul University (UNICSUL), Galvão Bueno St., 868, 01506-000, São Paulo, SP, Brazil
| | - Thaís Rodrigues Souza
- Postgraduate Department of Cruzeiro do Sul University (UNICSUL), Galvão Bueno St., 868, 01506-000, São Paulo, SP, Brazil
| | - Flavia Gonçalves
- Ibirapuera University (UNIB), Interlagos Ave., 1329, 04661-100, São Paulo, SP, Brazil
| | - Caio Junji Tanaka
- Dental Research Division, Guarulhos University, Teresa Cristina Square, 229, 07023-070, Guarulhos, SP, Brazil
| | - Bruno Bueno-Silva
- Dental Research Division, Guarulhos University, Teresa Cristina Square, 229, 07023-070, Guarulhos, SP, Brazil
| | - Amedea Barozzi Seabra
- Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), dos Estados Ave., 5001, 09210-580, Santo André, SP, Brazil
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