Predicting ion mobility collision cross sections and assessing prediction variation by combining conventional and data driven modeling
Talanta. 2024 Mar 28;274:125970. doi: 10.1016/j.talanta.2024.125970. Online ahead of print.ABSTRACTThe use of collision cross section (CCS) values derived from ion mobility studies is proving to be an increasingly important tool in the characterization and identification of molecules detected in complex mixtures. Here, a novel machine learning (ML) based method for predicting CCS integrating both molecular modeling (MM) and ML methodologies has been devised and shown to be able to accurately predict CCS values for singly charged small molecular weight molecules from a broad range of chemical classes. The model performed fa...
Source: Talanta - April 15, 2024 Category: Chemistry Authors: Robbin Bouwmeester Keith Richardson Richard Denny Ian D Wilson Sven Degroeve Lennart Martens Johannes P C Vissers Source Type: research
Levels of rare earth elements on three abandoned mining sites of bauxite in southern Italy: A comparison between TXRF and ICP-MS
In this study, REE levels were determined in environmental samples collected from three abandoned mining sites of bauxite (Gargano, Otranto, and Spinazzola) in the region of Puglia, Southern Italy. The samples were digested and analyzed by two different techniques, Total X-Ray Fluorescence (TXRF) and Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS) to investigate which technique is the most suitable for analysis of the REE content in samples from abandoned mining sites of bauxite. Only 6 REEs could be detected by TXRF, while all REEs were detected in all the samples by ICP-MS. Spinazzola is the richest site and Ce t...
Source: Talanta - April 14, 2024 Category: Chemistry Authors: Antonios Apostolos Brouziotis Susanne Heise Lorenzo Saviano Keran Zhang Antonella Giarra Michael Bau Franca Tommasi Marco Guida Giovanni Libralato Marco Trifuoggi Source Type: research
Recent advancements of smartphone-based sensing technology for diagnosis, food safety analysis, and environmental monitoring
Talanta. 2024 Apr 10;275:126080. doi: 10.1016/j.talanta.2024.126080. Online ahead of print.ABSTRACTThe emergence of computationally powerful smartphones, relatively affordable high-resolution camera, drones, and robotic sensors have ushered in a new age of advanced sensible monitoring tools. The present review article investigates the burgeoning smartphone-based sensing paradigms, including surface plasmon resonance (SPR) biosensors, electrochemical biosensors, colorimetric biosensors, and other innovations for modern healthcare. Despite the significant advancements, there are still scarcity of commercially available smart...
Source: Talanta - April 14, 2024 Category: Chemistry Authors: Satyam Upadhyay Anil Kumar Monika Srivastava Amit Srivastava Arpita Dwivedi Rajesh Kumar Singh S K Srivastava Source Type: research
Advances in DNA-based electrochemical biosensors for the detection of foodborne pathogenic bacteria
Talanta. 2024 Apr 13;275:126072. doi: 10.1016/j.talanta.2024.126072. Online ahead of print.ABSTRACTThe detection of foodborne pathogenic bacteria is critical in preventing foodborne diseases. DNA-based electrochemical biosensors, with the merits of high sensitivity and short detection time, provide an effective detecting method for foodborne pathogens, attracting significant interest for the past few years. This review mainly describes the important research progress of DNA-based electrochemical biosensors for the detection of foodborne pathogenic bacteria through four perspectives: representative foodborne pathogens detec...
Source: Talanta - April 14, 2024 Category: Chemistry Authors: Jun Wang Xueting Cui Lanqian Liang Juan Li Bo Pang Jinhua Li Source Type: research
An ultrasensitive genosensor for detection of toxigenic and non-toxigenic Clostridioides difficile based on a conserved sequence in surface layer protein coding gene
Talanta. 2024 Apr 13;275:126014. doi: 10.1016/j.talanta.2024.126014. Online ahead of print.ABSTRACTClostridioides difficile (C. difficile) is the most common agent of antibiotic-associated diarrhea, leading to intestinal infection through the secretion of two major toxins. Not all strains of this bacterium are toxigenic, but some of them cause infection via their accessory virulence factors, such as surface layer protein (SlpA). SlpA is conserved in both toxigenic and non-toxigenic strains of C. difficile. In the present work, an amplification-free electrochemical genosensor was designed for the detection of the slpA gene....
Source: Talanta - April 14, 2024 Category: Chemistry Authors: Sepideh Ziaei Chamgordani Abbas Yadegar Masoumeh Azimirad Hedayatollah Ghourchian Source Type: research
Towards quantifying biomarkers for respiratory distress in preterm infants: Machine learning on mid infrared spectroscopy of lipid mixtures
This study presents a lung lipid model of five lipids present in lung surfactant and varies each in a systematic approach to evaluate the ability of machine learning models to predict the lipid concentrations, the L/S ratio and to quantify the uncertainty in the predictions using the jackknife + -after-bootstrap and variant bootstrap methods. We establish the L/S ratio can be determined with an uncertainty of approximately ±0.3 mol/mol and we further identify the 5 most prominent wavenumbers associated with each machine learning model.PMID:38615457 | DOI:10.1016/j.talanta.2024.126062 (Source: Talanta)
Source: Talanta - April 14, 2024 Category: Chemistry Authors: Waseem Ahmed Aneesh Vincent Veluthandath Jens Madsen Howard W Clark Ahilanandan Dushianthan Anthony D Postle James S Wilkinson Ganapathy Senthil Murugan Source Type: research
Foldable paper-based photoelectrochemical biosensor based on etching reaction of CoOOH nanosheets-coated laser-induced PbS/CdS/graphene for sensitive detection of ampicillin
Talanta. 2024 Apr 13;275:126085. doi: 10.1016/j.talanta.2024.126085. Online ahead of print.ABSTRACTTimely and rapid detection of antibiotic residues in the environment is conducive to safeguarding human health and promoting an ecological virtuous cycle. A foldable paper-based photoelectrochemical (PEC) sensor was successfully developed for the detection of ampicillin (AMP) based on glutathione/zirconium dioxide hollow nanorods/aptamer (GSH@ZrO2 HS@apt) modified cellulose paper as a reactive zone with laser direct-writing lead sulfide/cadmium sulfide/graphene (PbS/CdS/LIG) as photoelectrode and cobalt hydroxide (CoOOH) as a...
Source: Talanta - April 14, 2024 Category: Chemistry Authors: Zhenli Qiu Yufen Lei Xintong Lin Jinman Zhu Dianping Tang Yiting Chen Source Type: research
Surface-enhanced Raman scattering-based identification of breast cancer progression using extracellular vesicles-derived integrin α6β4
Talanta. 2024 Apr 13;275:126092. doi: 10.1016/j.talanta.2024.126092. Online ahead of print.ABSTRACTDetection of progression is of great importance to breast cancer treatment and can benefit patients. Limited by current detection technologies and biomarkers, early breast cancer progression diagnosis remains challenging. Researchers have found blood extracellular vesicles (EVs)-derived integrin α6β4 directly facilitate progression in breast cancer, enabling cancer detection. However, EVs size and heterogeneity hinder protein detection, masked by abundant background EVs. Hence, novel tools for efficient detection of EVs wit...
Source: Talanta - April 14, 2024 Category: Chemistry Authors: Haozhi Lei Haoze Wang Xiqiu Wang Zeyu Xiao Tian Tian Kai Cui Source Type: research
Surface-mediated fluorescent sensor array for identification of gut microbiota and monitoring of colorectal cancer
Talanta. 2024 Apr 8;274:126081. doi: 10.1016/j.talanta.2024.126081. Online ahead of print.ABSTRACTThe development of efficient, accurate, and high-throughput technology for gut microbiota sensing holds great promise in the maintenance of health and the treatment of diseases. Herein, we developed a rapid fluorescent sensor array based on surface-engineered silver nanoparticles (AgNPs) and vancomycin-modified gold nanoclusters (AuNCs@Van) for gut microbiota sensing. By controlling the surface of AgNPs, the recognition ability of the sensor can be effectively improved. The sensor array was used to successfully discriminate si...
Source: Talanta - April 13, 2024 Category: Chemistry Authors: Zhihui Liu Meizi Zeng Yuquan Xiao Xiaohua Zhu Meiling Liu Ying Long Haitao Li Youyu Zhang Shouzhuo Yao Source Type: research
Design of a prodrug photocage for cancer cells detection and anticancer drug release
This article presents the design and synthesis of a novel Rhodamine B fluorescence probe. The design strategy involves utilizing an anticancer drug (Melphalan) to bind with a fluorescent group (HRhod-OH), forming HRhod-MeL, which is non-fluorescent. However, when exposed to the high levels of reactive oxygen species (ROS) of cancer cells, HRhod-MeL transforms into a red-emitting Photocage (Rhod-MeL), and selectively accumulates in the mitochondria of cancer cells, where, when activated with green light (556 nm), anti-cancer drugs released. The Photocage improve the efficacy of anti-cancer drugs and enables the precise diag...
Source: Talanta - April 13, 2024 Category: Chemistry Authors: Qianshan Shao Fei Zhang Chunxiao Li Yuyu Yang Shihan Liu Guang Chen Baolei Fan Source Type: research
Advances on fluorescence chemosensors for selective detection of water
Talanta. 2024 Apr 9;275:126089. doi: 10.1016/j.talanta.2024.126089. Online ahead of print.ABSTRACTWater, although an important part of everyday life, is acts as one of the most significant contaminants in various applications such as biomedical monitoring, chemical production, petroleum-based fuel and food processing. In fact, the presence of water in other solvents is a huge concern. For the quantification of trace water content, different methods such as Karl-Fischer, electrochemical, nuclear magnetic resonance, chromatography, and thermogravimetric analysis have been used. Although every technique has its own benefit, e...
Source: Talanta - April 12, 2024 Category: Chemistry Authors: Pragyan Parimita Dash Arup Kumar Ghosh Patitapaban Mohanty Rubi Behura Sunita Behera Bigyan R Jali Suban K Sahoo Source Type: research
A new derivatizing reagent for the determination of 5-nitro-2-furaldehyde in trout muscle by liquid chromatography-tandem mass spectrometry
This study aims at developping an analytical method for 5-NF determination in trout muscle samples based on chemical derivatization prior to analysis by liquid chromatography-tandem mass spectrometry. Four commercially available hydrazine reagents, namely: N,N-Dimethylhydrazine (DMH), 4-Hydrazinobenzoic acid (HBA), 2,4-Dichlorophenylhydrazine (2,4-DCPH) and 2,6-Dichlorophenylhydrazine (2,6-DCPH) were proposed for the first time as derivatizing reagents in the analysis of 5-NF. The derivatization reaction was simultaneously performed along with the extraction method in acidic condition using ultrasonic assistance and follow...
Source: Talanta - April 12, 2024 Category: Chemistry Authors: Khaled El Hawari Dominique Hurtaud-Pessel Eric Verdon Source Type: research
Rapid screening of infertility-associated gynecological conditions via ambient glow discharge mass spectrometry utilizing urine metabolic fingerprints
Talanta. 2024 Apr 8;274:125969. doi: 10.1016/j.talanta.2024.125969. Online ahead of print.ABSTRACTInfertility presents a widespread challenge for many families worldwide, often arising from various gynecological diseases (GDs) that hinder successful pregnancies. Current diagnostic methods for GDs have disadvantages such as low efficiency, high cost, misdiagnose, invasive injury and etc. This paper introduces a rapid, non-invasive, efficient, and straightforward analytical method that utilizes desorption, separation, and ionization mass spectrometry (DSI-MS) platform in conjunction with machine learning (ML) to detect urine...
Source: Talanta - April 12, 2024 Category: Chemistry Authors: Yijiao Qu Ming Chen Yiran Wang Liangliang Qu Ruiyue Wang Huihui Liu Liping Wang Zongxiu Nie Source Type: research
A strategy to enhance the water solubility of luminescent β-diketonate-Europium(III) complexes for time-gated luminescence bioassays
Talanta. 2024 Mar 27;274:126000. doi: 10.1016/j.talanta.2024.126000. Online ahead of print.ABSTRACTLuminescent β-diketonate-europium(III) complexes have been found a wide range of applications in time-gated luminescence (TGL) bioassays, but their poor water solubility is a main problem that limits their effective uses. In this work we propose a simple and general strategy to enhance the water solubility of luminescent β-diketonate-europium(III) complexes that permits facile synthesis and purification. By introducing the fluorinated carboxylic acid group into the structures of β-diketone ligands, two highly water-soluble...
Source: Talanta - April 12, 2024 Category: Chemistry Authors: Zhiyuan Dong Bo Song Hua Ma Xiaona Gao Wenzhu Zhang Jingli Yuan Source Type: research
Direct electrochemical reduction of graphene oxide thin film for aptamer-based selective and highly sensitive detection of matrix metalloproteinase 2
Talanta. 2024 Apr 9;274:126079. doi: 10.1016/j.talanta.2024.126079. Online ahead of print.ABSTRACTSimple and low-cost biosensing solutions are suitable for point-of-care applications aiming to overcome the gap between scientific concepts and technological production. To compete with sensitivity and selectivity of golden standards, such as liquid chromatography, the functionalization of biosensors is continuously optimized to enhance the signal and improve their performance, often leading to complex chemical assay development. In this research, the efforts are made on optimizing the methodology for electrochemical reduction...
Source: Talanta - April 12, 2024 Category: Chemistry Authors: Stefan Jari ć Silvia Schobesberger Lazar Velicki Aleksandra Milovan čev Stanislava Nikoli ć Peter Ertl Ivan Bobrinetskiy Nikola Ž Knežević Source Type: research
