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Critical Reviews in Analytical Chemistry

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https://read.qxmd.com/read/30767567/electrochemical-sensors-containing-schiff-bases-and-their-transition-metal-complexes-to-detect-analytes-of-forensic-pharmaceutical-and-environmental-interest-a-review
#1
Érica Naomi Oiye, Maria Fernanda Muzetti Ribeiro, Juliana Midori Toia Katayama, Maraine Catarina Tadini, Marco Antonio Balbino, Izabel Cristina Eleotério, Juliana Magalhães, Alex Soares Castro, Ricardo Soares Mota Silva, José Wilmo da Cruz Júnior, Edward Ralph Dockal, Marcelo Firmino de Oliveira
Schiff bases and their transition metal complexes are inexpensive and easy to synthesize. These compounds display several structural and electronic features that allow their application in numerous research fields. Over the last three decades, electroanalytical scientists of various areas have developed electrochemical sensors from many compounds. The present review discusses the applicability of Schiff bases, their transition metal complexes and new materials containing these compounds as electrode modifiers in sensors to detect analytes of forensic, pharmaceutical and environmental interest...
February 15, 2019: Critical Reviews in Analytical Chemistry
https://read.qxmd.com/read/30767558/current-standing-and-technical-guidance-on-intracellular-drug-quantification-a-new-site-specific-bioavailability-prediction-approach
#2
Tarang Jadav, Sonali Jain, Kiran Kalia, Pinaki Sengupta
Determination of intracellular concentration becomes essential for the drugs having target receptors or bioactivation site inside the cells. Majority of the antiviral drugs are nucleoside analogs and their intracellular phosphorylated metabolites are active. The anticancer drugs of the cellular enzyme and nucleoside analog category are also required to be undergone intracellular drug level analysis. In this review, we have sequentially described the cell isolation protocols, cell lysis techniques and sample preparation approach to be followed for quantification of intracellular levels of selected antiviral and anticancer drugs...
February 15, 2019: Critical Reviews in Analytical Chemistry
https://read.qxmd.com/read/30753109/host-guest-recognition-of-pesticides-by-calixarenes
#3
Edilma Sanabria Español, Mauricio Maldonado
This article is based on a review of the literature and our own experience with toxicological molecules. We explain the nature of calix[n]arenes and as their recognized properties are used to detect compounds of toxicological interest, mainly the most important pesticide families such as organophosphorated, organochlorine compounds, pyrethroid insecticides, carbamate fungicides, and herbicides, using different techniques. In addition, we show the role of the macrocycle and its interactions, and the advantage of using this type of compound for improving conventional techniques, where the phenomenon of recognition is very important, such as chromatography, solid-phased extraction, and the development of specific sensors, among others and Even we also show the use of this macrocycle for detoxication procedures in vivo...
February 12, 2019: Critical Reviews in Analytical Chemistry
https://read.qxmd.com/read/30739482/innovative-seizure-of-metal-metal-oxide-nanoparticles-in-water-purification-a-critical-review-of-potential-risks
#4
Muhammad Imran Din, Amna Ghulam Nabi, Zaib Hussain, Muhammad Arshad, Azeem Intisar, Ahsan Sharif, Ejaz Ahmed, Hafiz Arslan Mehmood, Muhammad Latif Mirza
Water contamination is a worldwide critical issue for the present society to avoid competition and maintain an environmentally friendly scenario. Removal of various pollutants including inorganic and organic compounds from water is a big challenge nowadays. Worldwide attention to promote polluted water and technologies related to its treatment has been adversely increased. The utilization of metal/metal oxide nanoparticles (NPs) for this purpose has gained much attention due to its exceptional properties imparted by reduced size and effective surface area...
February 10, 2019: Critical Reviews in Analytical Chemistry
https://read.qxmd.com/read/30739473/glucose-sensing-by-fluorescent-nanomaterials
#5
Guilherme P C Mello, Eliana F C Simões, Diana M A Crista, João M M Leitão, Luís Pinto da Silva, Joaquim C G Esteves da Silva
Diabetes mellitus is a chronic disease and leading cause of death worldwide, affecting more than 420 million people. High blood glucose levels are a common effect of uncontrolled diabetes, which can cause serious health damage. Diabetic individuals must measure their blood glucose levels regularly in order to control glycemic levels and minimize the effects of the disease. Glucose sensors have been used in the management of diabetes for more than 50 years, when Clark and Ann Lyons developed the first glucose enzyme electrode in 1962...
February 10, 2019: Critical Reviews in Analytical Chemistry
https://read.qxmd.com/read/30672320/analytical-methods-for-stability-assessment-of-nitrate-esters-based-propellants
#6
Djalal Trache, Ahmed Fouzi Tarchoun
Nitrate esters-based propellant (NEBP) belongs to the main classes of energetic materials being used in civilian and military applications. These NEBPs are not highly stable, and during aging, some of their functional characteristics may change, what can lead to serious safety problems. A thorough analytical characterization of NEBP is of fundamental importance to provide an adequate support for their stability and safe life assessment. Moreover, in order to safely store and fully exploit these energetic materials, accurate analytical techniques and strategies are indispensable to efficiently judge their properties during aging...
January 23, 2019: Critical Reviews in Analytical Chemistry
https://read.qxmd.com/read/30669854/liquid-chromatography-based-methods-for-analysis-of-disease-modifying-antirheumatic-drugs-dmards-in-biological-matrices
#7
Ashish Dogra, Anjna Sharma, Uttam Kumar Mandal, Pankul Kotwal, Shipra Bhatt, Utpal Nandi
Rheumatoid arthritis (RA) is a common chronic disease with inflammatory and immunological background where treatments can only improve the symptoms and slow down the progress of the disease. Although there are several drugs with different therapeutic targets available in the market for the treatment of RA, conventional synthetic disease-modifying antirheumatic drugs (DMARDs) are the most effective option to date. Methotrexate, azathioprine, hydroxychloroquine, sulfasalazine, leflunomide, minocycline are commonly prescribed DMARDs by rheumatologists but they have the limitations of severe toxicity for which therapeutic drug monitoring is necessary...
January 23, 2019: Critical Reviews in Analytical Chemistry
https://read.qxmd.com/read/30663318/elisa-and-lateral-flow-immunoassay-for-the-detection-of-food-colorants-state-of-the-art
#8
Anna N Berlina, Anatoly V Zherdev, Boris B Dzantiev
Food colorants are inalienable part of human life. Since ancient times, they have become firmly established and have undergone a number of changes. During this time, the attitude towards them has changed. The desire to color the food now raises questions about the various side effects of their use. With the development of methods of toxicology and obtaining data on the toxicity of food coloring, restrictions and standards for their content in food have emerged. The development of methods for the analysis of dyes in various food products is becoming increasingly in demand...
January 21, 2019: Critical Reviews in Analytical Chemistry
https://read.qxmd.com/read/30648398/carbon-nanomaterial-based-electrochemical-biosensors-for-foodborne-bacterial-detection
#9
Shalini Muniandy, Swe Jyan Teh, Kwai Lin Thong, Aung Thiha, Ignatius Julian Dinshaw, Chin Wei Lai, Fatimah Ibrahim, Bey Fen Leo
The development of easy to use, rapid and sensitive methods for direct detection of foodborne bacterial pathogens has become significantly important due to their impact on human health. In recent years, carbon nanomaterials have been adapted in the fabrication of electrochemical biosensors due to their exceptional combination of intrinsic properties such as high conductivity, stability and biocompatibility that render them as a promising candidate for bio-sensing material. The scope of this review is to provide a brief history of the current methods and different types of electrochemical biosensors used for the detection of bacterial pathogens...
January 16, 2019: Critical Reviews in Analytical Chemistry
https://read.qxmd.com/read/30636451/new-applications-and-analysis-of-e-azastilbenes-in-environmental-samples
#10
Mariusz Kluska, Ewa Krajewska, Joanna Jabłońska, Wiesław Prukała
The paper collates and summarizes information on stilbene derivatives, i.e. (E)-azastilbenes, taking into account the new possibilities of their applications, inter alia, in the natural environment. (E)-azastilbenes are biologically active, which is of great importance to humans and the whole ecosystem. As evidenced by a number of studies, they show fungistatic, fungitoxic and, depending on the concentration, estrogenic properties. Due to their properties, (E)-azastilbenes are still of great interest to researchers, who have high hopes for their pharmacological use or the possibility of using them as antiseptics, disinfectants, or preservatives in various products, including the environmental ones...
January 12, 2019: Critical Reviews in Analytical Chemistry
https://read.qxmd.com/read/30636444/electroanalytical-approaches-for-determination-of-prostate-cancer-drugs-in-biological-samples-and-dosage-forms
#11
Cafer Saka
Prostate cancer is the second most common malignant type of cancer in men and fifth among fatal types of cancer. Because drugs used in prostate cancer, such as in many other drugs, are also present in low concentrations in body fluids, it is important to develop highly sensitive and sensitive methods that allow the correct amount of prostate cancer drugs to be determined at low concentrations in biological specimens. Electrochemical approaches for the quantitation of prostate cancer drugs have several advantages over other common techniques, including sensitive, selective, fast, broad linear concentration range...
January 12, 2019: Critical Reviews in Analytical Chemistry
https://read.qxmd.com/read/30612436/analysis-of-antisense-oligonucleotides-and-their-metabolites-with-the-use-of-ion-pair-reversed-phase-liquid-chromatography-coupled-with-mass-spectrometry
#12
Anna Kaczmarkiewicz, Łukasz Nuckowski, Sylwia Studzińska, Bogusław Buszewski
Antisense oligonucleotides (ASOs) have been widely investigated as a potential drugs because of their ability to bind with the target DNA or RNA strands, which may lead to inhibition of translational processes. This review presents currently approved oligonucleotide (OGN) drugs and summarizes their modification types, mechanisms of action, and application of ion pair reversed phase liquid chromatography for the analysis. Special attention was paid to the stationary phases selection for the separation of OGNs and the impact of different compositions of mobile phases on retention and signal intensity in mass spectrometry (MS)...
January 5, 2019: Critical Reviews in Analytical Chemistry
https://read.qxmd.com/read/30601038/molecular-imprinting-prevents-environmental-contamination-and-body-toxicity-from-anticancer-drugs-an-update
#13
Shabi Abbas Zaidi
Cancer has been responsible for high morbidity and mortality globally. The treatment of cancer is possible using different kinds of therapies using anticancer drugs if it is diagnosed at the right time. Nevertheless, their appropriate administration for maximum therapeutic effect and their elimination from the patient's body causing environmental problems are two big issues which could be successfully abated using molecular imprinted polymers (MIPs) owing to their unique features. In this review, we have compiled and discussed the works on the determination and controlled release of anticancer drugs based on MIPs...
January 2, 2019: Critical Reviews in Analytical Chemistry
https://read.qxmd.com/read/30596250/recent-applications-of-carbonaceous-nanosorbents-in-solid-phase-extraction-for-the-determination-of-pesticides-in-food-samples
#14
Ingars Reinholds, Martins Jansons, Iveta Pugajeva, Vadims Bartkevics
This article covers recent trends of carbonaceous nanomaterial supported solid phase extraction for the liquid and gas chromatography analysis of pesticides in food samples. Several advanced carbonaceous nanosorbents have been reported over the previous decade for pesticide extraction, such as graphene derivatives modified by combination with silica, amines, polymers, and/or magnetic nanoparticles. The advances in this field have opened possibilities for using neat or modified carbon nanotubes or graphene-type sorbents for the pre-concentration of polar or nonpolar pesticides by solid phase extraction (SPE) or micro-SPE methods or to apply such nanomaterials for the removal of matrix components by dispersive SPE during sample clean-up...
December 29, 2018: Critical Reviews in Analytical Chemistry
https://read.qxmd.com/read/30596249/fabrications-and-applications-of-zno-nanomaterials-in-flexible-functional-devices-a-review
#15
Ping Rong, Shuai Ren, Qi Yu
The present review focuses on the preparations, properties, and applications of zinc oxide (ZnO) nanomaterials in flexible functional devices. An overview is given on several methods for the growth of ZnO nanomaterials, including sputtering, sol-gel method, atomic layer deposition, all-inkjet-printing approach, electrochemical deposition, hydrothermal method. The broad applications of ZnO nanomaterials in solar cell, supercapacitors, flexible piezoelectric nanogenerators, ultraviolet photodetectors, photodiodes, porous three-dimensional (3-D) ceramics, functional surface coating, and sensors are also discussed...
December 29, 2018: Critical Reviews in Analytical Chemistry
https://read.qxmd.com/read/30595027/modern-assay-techniques-for-cancer-drugs-electroanalytical-and-liquid-chromatography-methods
#16
Sevinc Kurbanoglu, Nurgul K Bakirhan, Mehmet Gumustas, Sibel A Ozkan
In the past decades, patients who have chemotherapy treatment have considerably increased number. At this point, the development of rapid precise, and reliable methods are very important to analyze cancer drugs from their dosage forms, animals or human biological samples. Among all the analytical methods, electrochemical methods hold an important position with their unique properties such as specificity in the biological recognition process, fast response, and their reliability and do not need a pretreatment process...
December 29, 2018: Critical Reviews in Analytical Chemistry
https://read.qxmd.com/read/30582823/human-ultraweak-photon-emission-key-analytical-aspects-results-and-future-trends-a-review
#17
M Calcerrada, C Garcia-Ruiz
Living systems emit what is called ultraweak photon emission (UPE). This visually undetectable phenomenon has only been studied in humans for the last 30 years, finding that UPE is a complex process depending on multitude factors. Considering previous literature, this review discusses the current trends in the analysis of in vivo UPE from human beings. To this aim, Analytical Approaches Employed for UPE Measurement section focuses on the analytical techniques employed (photomultipliers and charged coupled device cameras), summarizing analytical conditions and reporting figures of merit reached to date...
December 24, 2018: Critical Reviews in Analytical Chemistry
https://read.qxmd.com/read/30582732/methods-and-current-trends-in-determination-of-neuraminidase-activity-and-evaluation-of-neuraminidase-inhibitors
#18
Zuzana Hľasová, Ivan Košík, Miroslav Ondrejovič, Stanislav Miertuš, Jaroslav Katrlík
This review focuses on the methods and current trends in determination of neuraminidases (NAs) activity and evaluation of neuraminidase inhibitors (NAIs) by means of biochemical assays. These methods can be used, in principle, for any type of sialidase, with regard to substrate specificity and optimal conditions for enzymatic reaction. Considering the range of organisms producing sialidases, this review omits cell-based assays (plaque assays and study of cytopathic effect) and animal model studies, which are reviewed elsewhere concerning specific organisms...
December 24, 2018: Critical Reviews in Analytical Chemistry
https://read.qxmd.com/read/30582727/solid-phase-microextraction-apparatus-sorbent-materials-and-application
#19
Muhammad Sajid, Mazen Khaled Nazal, Małgorzata Rutkowska, Natalia Szczepańska, Jacek Namieśnik, Justyna Płotka-Wasylka
The primary objective of this review article is to strategically screen and highlight the advancements in the area of solid phase microextraction (SPME). The plenty of review articles have been written on different aspects of SPME, this review is dedicated to provide the brief but clear overview of the research footprints so produced from SPME. Some of the key advancements in types and designs, coating materials, coating strategies, in vivo sampling and direct coupling of SPME with MS have been critically discussed...
December 24, 2018: Critical Reviews in Analytical Chemistry
https://read.qxmd.com/read/30582712/future-of-ionic-liquids-for-chiral-separations-in-high-performance-liquid-chromatography-and-capillary-electrophoresis
#20
Afzal Hussain, Mohamed F AlAjmi, Iqbal Hussain, Imran Ali
The ionic liquids have special features and, hence, called as liquid electrolytes, ionic melts, ionic glasses, fused salts, liquid salts, ionic fluids, designer solvents, green, and future solvents. Achiral and chiral ionic liquids have been used in enantioseparations of a variety of racemates in high-performance liquid chromatography and capillary electrophoresis. Chiral ionic liquids have received a good reputation in high-performance liquid chromatography and capillary electrophoresis because of their astonishing properties...
December 24, 2018: Critical Reviews in Analytical Chemistry
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