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Mahmoud N, Mohamed WR, Mohamed T. Femtosecond laser-induced fluorescence for rapid monitoring of cardiac troponin 1 as a cardiovascular disease biomarker. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 305:123491. [PMID: 37837929 DOI: 10.1016/j.saa.2023.123491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 10/02/2023] [Indexed: 10/16/2023]
Abstract
Medical diagnosis usually requires blood analysis of various biomarkers which are essential for disease detection and health status monitoring. Cardiac troponin 1 (cTn1) is a protein member of the cardiac troponin complex used for the diagnosis of several pathologies associated with cardiomyocyte necrosis. Laser-induced fluorescence (LIF) is a technique with high sensitivity and specificity, and it is one of the most significant developments used as an analytical tool for qualitative and quantitative analysis. The current study investigated the potential application of femtosecond LIF as a novel detection technique for rapid monitoring of cTn1 in clinical analysis. In the present study, the cTn1 (8 ng/ml) was excited over wavelengths ranging from 350 to 400 nm, and the LIF spectra were recorded. The results demonstrated that the maximum fluorescence intensity was observed at an excitation wavelength of 350 nm, with an emitted fluorescence peak centeredat 494 nm. At an excitation wavelength of 350 nm, different concentrations of cTn1 have been investigated and LIF spectra were obtained. The results revealed that the fluorescence peak intensity is concentration-dependent and increases linearly with increasing cTn1 concentration. These findings show that femtosecond LIF presents a unique, highly selective, precise, and direct approach to monitoring cTn1.
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Affiliation(s)
- Nora Mahmoud
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Wafaa R Mohamed
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt; Faculty of Pharmacy, Department of Pharmacology and Toxicology, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Tarek Mohamed
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt.
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Gao R, Wang H, Abdurahman A, Liang W, Lu X, Wei S, Zeng F. Insight into the hetero-interactions of 4-nonylphenol with dissolved organic matter: multiple spectroscopic methods, 1H NMR study and principal component analysis. RSC Adv 2022; 12:22416-22424. [PMID: 36105990 PMCID: PMC9364969 DOI: 10.1039/d2ra03739d] [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: 06/17/2022] [Accepted: 08/01/2022] [Indexed: 11/30/2022] Open
Abstract
Understanding the interactions between heterogeneous dissolved organic matter (DOM) and nonylphenols (NPs) is essential for predicting their behavior and fate in the environment. Herein, we firstly obtained different MW-fractionated humic acids (HAs) using the ultrafiltration method. Afterward, the molecular weight (MW)-dependent interactions of HAs with 4-nonylphenol (4-NP) were analysed by excitation emission matrix (EEM) fluorescence spectroscopy, fluorescence quenching, UV-vis spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, nuclear magnetic resonance (NMR) spectroscopy and principal component analysis (PCA). EEM spectra indicated that the quenching mechanism was static. In the binding process, the higher MW fractions showed stronger interaction with 4-NP than the lower MW counterparts, exhibiting a clear MW-dependent interaction heterogeneity. The interaction constants for the 4-NP–HAs system were suppressed as the ionic strength decreased and pH increased, which was especially obvious in the binding of 4-NP to the lower MW-fractionated HAs. The FTIR spectra revealed that hydroxyl and aromatics were involved in the interaction process of HA fractions with 4-NP. It was also found from 1H NMR that π–π interactions between aromatic rings of 4-NP and MW-fractionated HAs were responsible for the complexation. The correlation analysis and PCA results indicated that aromaticity and MW play important roles in the interaction process and confirmed an obvious interaction heterogeneity among MW-fractionated HAs samples. This work highlighted MW-dependent interaction heterogeneities of HA, which suggested that heterogeneity in MW distribution should be taken into consideration when exploring the fate and biogeochemistry cycling of 4-NP from contaminated environments. Multiple spectroscopic methods, 1H NMR study and PCA were used to investigate the heterointeractions of 4-nonylphenol with humic acids.![]()
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Affiliation(s)
- Rui Gao
- School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China
| | - Hao Wang
- School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China
| | - Abliz Abdurahman
- School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China
| | - Weiqian Liang
- School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China
| | - Xiaotian Lu
- School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China
| | - Shuyin Wei
- School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China
| | - Feng Zeng
- School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China
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Bakhoum JP, Mbaye OMA, Diaw PA, Mbaye M, Cisse L, Gaye-Seye MD, Aaron JJ, Coly A, Le Jeune B, Giamarchi P. Ultraviolet Photo-Induced Fluorescence Followed by Laser Excitation (UV-PIF-LE) for the Determination of Pesticides in Natural Waters. ANAL LETT 2019. [DOI: 10.1080/00032719.2019.1604724] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Jean-Pierre Bakhoum
- Lab. Photochimie et d’Analyse, Univ. C. A. Diop, Dakar, Senegal
- OPTIMAG Lab., Brest Univ., Brest Cedex, France
| | - Olivier M. A. Mbaye
- Lab. Photochimie et d’Analyse, Univ. C. A. Diop, Dakar, Senegal
- OPTIMAG Lab., Brest Univ., Brest Cedex, France
| | - Pape A. Diaw
- Lab. Photochimie et d’Analyse, Univ. C. A. Diop, Dakar, Senegal
- OPTIMAG Lab., Brest Univ., Brest Cedex, France
- Lab. Matériaux, Electrochimie et Photochimie Analytique, Univ. A. Diop, Bambey, Senegal
| | - Moussa Mbaye
- Lab. Photochimie et d’Analyse, Univ. C. A. Diop, Dakar, Senegal
- OPTIMAG Lab., Brest Univ., Brest Cedex, France
| | - Lamine Cisse
- Lab. Photochimie et d’Analyse, Univ. C. A. Diop, Dakar, Senegal
| | - Mame D. Gaye-Seye
- Lab. Photochimie et d’Analyse, Univ. C. A. Diop, Dakar, Senegal
- Lab. Géomatériaux et Environnement, Univ. Paris-Est, Marne-la-Vallée, France
| | - Jean-Jacques Aaron
- Lab. Géomatériaux et Environnement, Univ. Paris-Est, Marne-la-Vallée, France
| | - Atanasse Coly
- Lab. Photochimie et d’Analyse, Univ. C. A. Diop, Dakar, Senegal
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Taniguchi M, Lindsey JS. Database of Absorption and Fluorescence Spectra of >300 Common Compounds for use in Photochem
CAD. Photochem Photobiol 2018; 94:290-327. [DOI: 10.1111/php.12860] [Citation(s) in RCA: 236] [Impact Index Per Article: 39.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 10/22/2017] [Indexed: 12/11/2022]
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Liu W, Zhang X, Liu K, Zhang S, Duan Y. Laser-induced fluorescence: Progress and prospective for in vivo cancer diagnosis. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s11434-013-5826-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Direct laser photo-induced fluorescence determination of bisphenol A. Anal Bioanal Chem 2011; 401:3011-7. [DOI: 10.1007/s00216-011-5375-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 08/22/2011] [Accepted: 08/26/2011] [Indexed: 10/17/2022]
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