Search results for: Miguel de la Guardia

Items from 1 to 20 out of 243 results

article

Ethambutol-Loaded Solid Lipid Nanoparticles as Dry Powder Inhalable Formulation for Tuberculosis Therapy

Elham Nemati, Ahad Mokhtarzadeh, Vahid Panahi-Azar, Ali Mohammadi, more

AAPS PharmSciTech > 2019 > 20 > 3 > 1-9

Ethambutol hydrocloride (EMB) is an anti-tuberculosis drug, which is commonly used as a protection agent against of unrecognized resistance to other drugs employed to treat this disease. Since oral form of EMB has some side effects and cellular toxicity, direct administration of EMB into lungs seems to be an attractive and reasonable option in order to overcome these side effects. Our main goal in...

article

Fast extraction of cannabinoids in marijuana samples by using hard-cap espresso machines

Kristiina Leiman, Lorenzo Colomo, Sergio Armenta, Miguel de la Guardia, more

Talanta > 2018 > 190 > C > 321-326

A simple, quick and low cost procedure was developed for the extraction of Δ⁹-tetrahydrocannabinol, cannabidiol, and cannabinol from marijuana samples, based on the use of a hard-cap espresso extraction with 2-propanol. After extraction, cannabinoids were directly determined after appropriate dilution by gas-chromatography-mass spectrometry, reaching a limit of detection from 0.03 to 0.05 mg g⁻¹....

article

Electrochemical biosensing using N-GQDs: Recent advances in analytical approach

Ayub Karimzadeh, Mohammad Hasanzadeh, Nasrin Shadjou, Miguel de la Guardia

TrAC Trends in Analytical Chemistry > 2018 > 105 > C > 484-491

This review is meant to provide an overview of the electrochemical biosensors based on Nitrogen doped graphene quantum dots (N-GQDs) for analytical approaches, along with significant advances over the last several years in related technologies. In addition, this review described: i) Most frequently applied principles in biosensing based on of N-GQDs ii) The aspects of fabrication in the perspective...

article

Identification and characterization of the new psychoactive substance 3-fluoroethamphetamine in seized material

Ángela Yanini, Sergio Armenta, Francesc A. Esteve-Turrillas, Nieves Galipienso, more

Forensic Toxicology > 2018 > 36 > 2 > 404-414

Purpose An amphetamine-type new psychoactive substance was identified in a fine white yellowish powder from a seizure control held in Spain in July 2017. Methods Seized sample was deeply characterized by standard and high-performance analytical techniques like attenuated total reflectance-Fourier-transform infrared spectroscopy, gas chromatography–electron ionization–mass spectrometry, high-resolution...

article

Poisoning histories in the Italian renaissance: The case of Pico Della Mirandola and Angelo Poliziano

Gianni Gallello, Elisabetta Cilli, Fulvio Bartoli, Massimo Andretta, more

Journal of Forensic and Legal Medicine > 2018 > 56 > C > 83-89

Giovanni Pico della Mirandola and Angelo Poliziano were two of the most important humanists of the Italian Renaissance. They died suddenly in 1494 and their deaths have been for centuries a subject of debate. The exhumation of their remains offered the opportunity to study the cause of their death through a multidisciplinary research project.Anthropological analyses, together with documentary evidences,...

article

Assessment of air passive sampling uptakes for volatile organic compounds using VERAM devices

Thalita Dallapícula Ramos, Miguel de la Guardia, Agustín Pastor, Francesc A. Esteve-Turrillas

Science of The Total Environment > 2018 > 619-620 > C > 1014-1021

A calibration chamber has been designed and employed for the simple and easy determination of uptake sampling rate (R_S) of volatile organic compounds (VOCs) from air using passive samplers. A flow of clean air was continuously spiked, at a constant VOC concentration, by the microinjection of a standard solution by means of a T-type tube. The developed system allowed the complete evaporation at room...

article

Dynamic reaction cell inductively couple plasma-mass spectrometry optimization for seawater analysis

Eva Soriano, Vicent Yusà, Agustín Pastor, Miguel de la Guardia

Microchemical Journal > 2018 > 137 > C > 363-370

A direct method for dynamic reaction cell inductively coupled plasma- mass spectrometry (DRC-ICP-MS) trace mineral elements determination in seawater was optimized by Experimental Statistical Design. Five instrumental parameters, such as radiofrequency, sample, nebulizer and reaction gas flows, rejection parameter q and axial field voltage were studied. A Plackett-Burman design was used for screening...

article

Cytosensing of cancer cells using antibody-based molecular imprinting: A short-review

Mohammad Hasanzadeh, Nasrin Shadjou, Miguel de la Guardia

TrAC Trends in Analytical Chemistry > 2018 > 99 > C > 129-134

Rapid and effective differentiation between normal and cancer cells is an important objective for the diagnosis, prognosis and theranosis of tumors. This short review highlights some of the most recent developments on the application of molecular bioimprinting in detection of cancer cells using antibody-based cancer cell recognition method. The particular emphasis of this review is on sample-to-answer...

article

Determination of fatty acids and lipid classes in salmon oil by near infrared spectroscopy

Mari Merce Cascant, Cassandra Breil, Anne Silvie Fabiano-Tixier, Farid Chemat, more

Food Chemistry > 2018 > 239 > C > 865-871

Near-infrared (NIR) spectroscopy was evaluated as a rapid method for the determination of oleic, palmitic, linoleic and linolenic acids as well as omega-3, omega-6, and to predict polyunsaturated, monounsaturated and saturated fatty acids, together with triacylglycerides, diglycerides, free fatty acids and ergosterol in salmon oil. To do it, Partial Least Squares (PLS) regression models were applied...

article

Recent trends in rapid detection of influenza infections by bio and nanobiosensor

Soodabeh Hassanpour, Behzad Baradaran, Maryam Hejazi, Mohammad Hasanzadeh, more

TrAC Trends in Analytical Chemistry > 2018 > 98 > C > 201-215

A literature update has been made about the progress and improvements in the use of biosensors for sensitive, rapid and specific detection of influenza virus. Background information about influenza virus and its structure together with a general discussion about the characteristics and significant aspects of different types of biosensors were used as a frame to put inside the main recent developments...

article

Targeted cancer therapy through antibody fragments-decorated nanomedicines

Abbas Alibakhshi, Fatemeh Abarghooi Kahaki, Shahrzad Ahangarzadeh, Hajar Yaghoobi, more

Journal of Controlled Release > 2017 > 268 > C > 323-334

Active targeting in cancer nanomedicine, for improved delivery of agents and diagnose, has been reviewed as a successful way for facilitating active uptake of theranostic agents by the tumor cells. The application of a targeting moiety in the targeted carrier complexes can play an important role in differentiating between tumor and healthy tissues. The pharmaceutical carriers, as main part of complexes,...

article

Dispersive magnetic immunoaffinity extraction. Anatoxin-a determination

Tinh Le, Francesc A. Esteve-Turrillas, Sergio Armenta, Miguel de la Guardia, more

Journal of Chromatography A > 2017 > 1529 > C > 57-62

Specific monoclonal antibodies were coupled with magnetic Sepharose-based beads and used, for the first time. The methodology was applied to preconcentrate anatoxin-a from water and the later determination by ion mobility spectrometry (IMS). Dispersive magnetic immunoaffinity (d-MagIA) extraction methodology provided a limit of detection of 0.02μgL⁻¹ and a satisfactory precision with a relative standard...

article

Hard cap espresso extraction and liquid chromatography determination of bioactive compounds in vegetables and spices

María Teresa Martinez-Sena, Miguel de la Guardia, Francesc A. Esteve-Turrillas, Sergio Armenta

Food Chemistry > 2017 > 237 > C > 75-82

A new analytical procedure, based on liquid chromatography with diode array and fluorescence detection, has been proposed for the determination of bioactive compounds in vegetables and spices after hard cap espresso extraction. This novel extraction system has been tested for the determination of capsaicin and dihydrocapsaicin from fresh chilli and sweet pepper, piperine from ground pepper, curcumin...

article

Nanomaterial-based biosensors for detection of pathogenic virus

Ahad Mokhtarzadeh, Reza Eivazzadeh-Keihan, Paria Pashazadeh, Maryam Hejazi, more

TrAC Trends in Analytical Chemistry > 2017 > 97 > C > 445-457

Viruses are real menace to human safety that cause devastating viral disease. The high prevalence of these diseases is due to improper detecting tools. Therefore, there is a remarkable demand to identify viruses in a fast, selective and accurate way. Several biosensors have been designed and commercialized for detection of pathogenic viruses. However, they present many challenges. Nanotechnology overcomes...

article

Application of additional factors supporting the microextraction process

Małgorzata Rutkowska, Katarzyna Owczarek, Miguel de la Guardia, Justyna Płotka-Wasylka, more

TrAC Trends in Analytical Chemistry > 2017 > 97 > C > 104-119

Due to the fact that green analytical chemistry is of high importance, the past two decades have witnessed a rapid growth in the sample preparation area with special emphasis on simplification, miniaturization and automation of extraction procedures. In addition, to accelerate the extraction processes and to improve the separation of analytes, several enhanced parameters are applied. These factors...

article

Early detection of contamination and defect in foodstuffs by electronic nose: A review

Alireza Sanaeifar, Hassan ZakiDizaji, Abdolabbas Jafari, Miguel de la Guardia

TrAC Trends in Analytical Chemistry > 2017 > 97 > C > 257-271

Electronic nose (e-nose) has emerged as a potential instrument in various areas of food safety assessment for rapid early detection of contamination and defect in food production chain. E-nose is an innovative measurement system designed for detecting and discriminating complex odors through mimicking the working mechanism and the principal building blocks of the mammalian olfactory system. This paper...

article

Nano-delivery system targeting to cancer stem cell cluster of differentiation biomarkers

Ahad Mokhtarzadeh, Soodabeh Hassanpour, Zahra Farajzadeh Vahid, Maryam Hejazi, more

Journal of Controlled Release > 2017 > 266 > C > 166-186

Cancer stem cells (CSCs) are one of the most important origins of cancer progression and metastasis. CSCs have unique self-renewal properties and diverse cell membrane receptors that induced the resistance to the conventional chemotherapeutic agents. Therefore, the therapeutic removal of CSCs could result in the cancer cure with lack of recurrence and metastasis. In this regard, targeting CSCs in...

article

Modulating tumor hypoxia by nanomedicine for effective cancer therapy

Rana Jahanban‐Esfahlan, Miguel de la Guardia, Delshad Ahmadi, Bahman Yousefi

Journal of Cellular Physiology > 233 > 3 > 2019 - 2031

Hypoxia, a characteristic feature of tumors, is indispensable to tumor angiogenesis, metastasis, and multi drug resistance. Hypoxic avascular regions, deeply embedded inside the tumors significantly hinder delivery of therapeutic agents. The low oxygen tension results in resistance to the current applied anti‐cancer therapeutics including radiotherapy, chemotherapy, and photodynamic therapy, the...

article

Comparison of near and mid infrared spectroscopy as green analytical tools for the determination of total polar materials in fried oils

Mari Merce Cascant, Salvador Garrigues, Miguel de la Guardia

Microchemical Journal > 2017 > 135 > C > 55-59

Total polar materials (TPM) are used as an indicator of the quality in the frying oil because of high values may be harmful for human health. Spanish legislation establishes the maximum level of total polar materials for frying fats and oils for human consumption around 25% (w/w). Official methods to monitor oil quality are time consuming and use a lot of chemicals; therefore it is necessary a simple...

article

Selective determination of clenbuterol residues in urine by molecular imprinted polymer—Ion mobility spectrometry

Otilia Peñuela-Pinto, Sergio Armenta, Francesc A. Esteve-Turrillas, Miguel de la Guardia

Microchemical Journal > 2017 > 134 > C > 62-67

Clenbuterol is banned for sports use and strictly regulated in livestock industry. In this study, a procedure for the determination of clenbuterol residues in water and urine has been developed using selective supports combined with ion mobility spectrometry (IMS) determination. A molecular imprinted polymer (MIP) was used for efficient clean-up and preconcentration of clenbuterol followed to a dispersive...

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MULTICOMMUTATION (13)
PARTIAL LEAST SQUARES (10)
BIOSENSOR (9)
NEAR INFRARED (9)
FLOW INJECTION (8)
FTIR (8)
GREEN ANALYTICAL CHEMISTRY (8)
SPECIATION (8)
CANCER (7)
ION MOBILITY SPECTROMETRY (7)
BIOTECHNOLOGY (6)
CHEMOMETRICS (6)
COCAINE (6)
ELECTROCHEMISTRY (6)
FOURIER TRANSFORM INFRARED (6)
HIERARCHICAL CLUSTER ANALYSIS (6)
IMMUNOSENSOR (6)
MILK ANALYSIS (6)
NANOSCIENCE AND NANOTECHNOLOGY (6)
BIOLOGICAL MOLECULE (5)
FLOW INJECTION ANALYSIS (5)
FOURIER TRANSFORM INFRARED SPECTROMETRY (5)
IMMUNOASSAY (5)
INFRARED SPECTROSCOPY (5)
PLS (5)
SOLID-PHASE EXTRACTION (5)
TUMOR BIOMARKERS (5)
APTASENSOR (4)
ATOMIC FLUORESCENCE SPECTROMETRY (4)
ATR-FTIR (4)
ATTENUATED TOTAL REFLECTANCE (4)
BIOMARKER (4)
BIOMEDICINE (4)
DETECTION (4)
DIFFUSE REFLECTANCE (4)
ENZYME (4)
EXTRACTION (4)
GENOSENSOR (4)
MICROWAVE-ASSISTED DIGESTION (4)
MULTIVARIATE STATISTICS (4)
NANOMATERIAL (4)
NANOTECHNOLOGY (4)
NIR (4)
PARTIAL LEAST SQUARES CALIBRATION (4)
PESTICIDES (4)
PRECONCENTRATION (4)
SAMPLE PREPARATION (4)
SEMIPERMEABLE MEMBRANE DEVICES (4)
SPECTROPHOTOMETRY (4)
VOLATILE ORGANIC COMPOUNDS (4)
WATER (4)
AGROCHEMICALS (3)
AIR (3)
AIR QUALITY (3)
ALCOHOL CONTENT (3)
ANTIGEN-ANTIBODY INTERACTION (3)
ATR (3)
BEERS (3)
BIOSENSING (3)
DETERMINATION (3)
ELECTROANALYSIS (3)
ELECTROANALYTICAL CHEMISTRY (3)
ELECTROCHEMICAL BIOSENSING (3)
ESSENTIAL ELEMENTS (3)
FOURIER TRANSFORM (3)
FT-RAMAN (3)
HEAD-SPACE (3)
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INDUCTIVELY COUPLED PLASMA OPTICAL EMISSION SPECTROSCOPY (ICP-OES) (3)
INFRARED (3)
INFRARED SPECTROMETRY (3)
LIQUID CHROMATOGRAPHY (3)
MANCOZEB (3)
MICROWAVE-ASSISTED EXTRACTION (3)
MILK (3)
MULTIPLEXES BIOSENSORS (3)
PARTIAL LEAST SQUARES (PLS) REGRESSION (3)
PASSIVE SAMPLERS (3)
PASSIVE SAMPLING (3)
PESTICIDE (3)
QUANTUM DOT (3)
SOLID PHASE (3)
SOLID PHASE EXTRACTION (3)
SPMD (3)
TARGETING (3)
URINE (3)
AIR PASSIVE SAMPLING (2)
ANTIMONY (2)
APTAMER (2)
ARSENIC (2)
ARSENIC DETERMINATION (2)
ATTENUATED TOTAL REFLECTANCE (ATR) (2)
BACKGROUND CORRECTION (2)
BANK NOTES (2)
BENZENE (2)
BIDIRECTIONAL ELECTROSTACKING (2)
BIOMEDICAL ANALYSIS (2)
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Search results for: Miguel de la Guardia

Ethambutol-Loaded Solid Lipid Nanoparticles as Dry Powder Inhalable Formulation for Tuberculosis Therapy

Fast extraction of cannabinoids in marijuana samples by using hard-cap espresso machines

Electrochemical biosensing using N-GQDs: Recent advances in analytical approach

Identification and characterization of the new psychoactive substance 3-fluoroethamphetamine in seized material

Poisoning histories in the Italian renaissance: The case of Pico Della Mirandola and Angelo Poliziano

Assessment of air passive sampling uptakes for volatile organic compounds using VERAM devices

Dynamic reaction cell inductively couple plasma-mass spectrometry optimization for seawater analysis

Cytosensing of cancer cells using antibody-based molecular imprinting: A short-review

Determination of fatty acids and lipid classes in salmon oil by near infrared spectroscopy

Recent trends in rapid detection of influenza infections by bio and nanobiosensor

Targeted cancer therapy through antibody fragments-decorated nanomedicines

Dispersive magnetic immunoaffinity extraction. Anatoxin-a determination

Hard cap espresso extraction and liquid chromatography determination of bioactive compounds in vegetables and spices

Nanomaterial-based biosensors for detection of pathogenic virus

Application of additional factors supporting the microextraction process

Early detection of contamination and defect in foodstuffs by electronic nose: A review

Nano-delivery system targeting to cancer stem cell cluster of differentiation biomarkers

Modulating tumor hypoxia by nanomedicine for effective cancer therapy

Comparison of near and mid infrared spectroscopy as green analytical tools for the determination of total polar materials in fried oils

Selective determination of clenbuterol residues in urine by molecular imprinted polymer—Ion mobility spectrometry

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