26 documents found, page 1 of 3
Evaluating the total gold concentration in metallic nanoparticles with a high c...
Godoy, Naiara Vieira, 1991-; Galazzi, Rodrigo Moretto, 1988-; Arruda, Marco Aurelio Zezzi, 1965-; Mazali, Italo Odone, 1972-Abstract: We report a complete set of strategies for characterization and an accurate determination of gold in metallic nanoparticles. For this, gold nanorods (AuNR) were synthesized by using the surfactant hexadecyltrimethylammonium bromide (CTAB) as the stabilizer and shape-directing agent. The surfactant CTAB forms a bilayer structure around the nanoparticles and became a challenge for the development of the...
Distribution, accumulation and speciation of selenium at the different growth s...
Chacón-Madrid, Katherine, 1986-; Arruda, Marco Aurelio Zezzi, 1965-Abstract: Selenium (Se) is an essential micronutrient for humans. Garlic (Allium sativum L.) metabolises Se into important Se-amino acids like Se-methylselenocysteine (Se-MetSeCys), precursor of methylselenol, an active species for cancer prevention. Therefore, the Se accumulation and speciation in garlic were studied to evaluate their relations with growth stages and types of plant clones. Four garlic clones (...
When a picture is worth a thousand words : molecular and elemental imaging appl...
Francischini, Danielle da Silva, 1995-; Arruda, Marco Aurelio Zezzi, 1965-Abstract: As spectral imaging is gaining special attention in the last years, once it allows transforming the chemical information from a sample surface into a high-resolution image of elemental and/or molecular spatial distribution. Then, this review aims to describe fundamental aspects of the main techniques applied to molecular and elemental imaging, such as mass spectrometry (MALDI-MS, DESI-MS, SIMS, and LA...
Evaluation of the aluminum migration from metallic seals to coffee beverage aft...
Iscuissati, Isabelle Pereira; Galazzi, Rodrigo Moretto, 1988-; Arruda, Marco Aurelio Zezzi, 1965-Agradecimentos: The authors (IS and MAZA) thank the Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP, São Paulo, Brazil) (2018/25207-0), and the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, Brasília, Brazil) (401170/2016-0) for financial support and fellowships. Additionally, the author MM acknowledges financial support from the Spanish Ministry of Science, Innovation and Uni...
Trace elements distribution in tropical tree rings through high-resolution imag...
Amais, Renata Stábile; Moreau, Pedro dos Santos, 1993-; Francischini, Danielle da Silva, 1995-; Magnusson, Rafael, 1998-Abstract: The distribution of trace elements in tree rings although poorly known may be useful to better understand environmental changes, pollution trends, long-term droughts, forest dieback processes, and biology of trees. Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) is used for imaging micronutrients and potentially toxic elements distribution, allowing the investigation of trace e...
Association between trace elements in serum from bipolar disorder and schizophr...
Santa Cruz, Elisa Castañeda, 1986-; Chacón-Madrid, Katherine, 1986-; Arruda, Marco Aurelio Zezzi, 1965-; Sussulini, Alessandra, 1981-Acompanhado de errata; Abstract: Imbalances in metal concentrations have been suggested to contribute to the pathophysiology of different brain disorders, such as bipolar disorder (BD) and schizophrenia (SCZ). Objectives: The aim of this exploratory study is to evaluate the association between the concentrations of macro/trace elements in serum from BD and SCZ patients considering the effects from different tre...
ICP-MS and trace element analysis as tools for better understanding medical con...
Amais, Renata Stábile; Arruda, Marco Aurelio Zezzi, 1965-Abstract: Element constitution and distribution in tissues and body fluids have increasingly become key pieces of information in life sciences and medicine, and trace elements may be successfully used as disease biomarkers. Here, we review the most recent advances in inductively coupled plasma mass spectrometry (ICP-MS) and the related state-of-the-art instrumentation and methods (e.g. single-particle and singl...
Inductively coupled plasma mass spectrometry based platforms for studies involv...
Galazzi, Rodrigo Moretto, 1988-; Freitas, Daniel Carneiro, 1985-; Costa, Luana Ferreira da, 1987-; Arruda, Marco Aurelio Zezzi, 1965-Abstract: The widespread application of nanoparticles (NPs) in recent times has caused concern because of their effects in biological systems. Although NPs can be produced naturally, industrially synthesized NPs affect the metabolism of a given organism because of their high reactivity. The biotransformation of NPs involves different processes, including aggregation/agglomeration, and reactions with biomolecule...
Unravelling neurological disorders through metallomics-based approaches
Jesus, Jemmyson Romário de, 1989-; Arruda, Marco Aurelio Zezzi, 1965-Abstract: Understanding the biological process involving metals and biomolecules in the brain is essential for establishing the origin of neurological disorders, such as neurodegenerative and psychiatric diseases. From this perspective, this critical review presents recent advances in this topic, showing possible mechanisms involving the disruption of metal homeostasis and the pathogenesis of neurological disor...
In vitro bioaccessibility of metals from tape tea : a low-cost emerging drug
Andrade, Aline Martins de, 1996-; Galazzi, Rodrigo Moretto, 1988-; Arruda, Marco Aurelio Zezzi, 1965-Agradecimentos: The authors (AMA and MAZA) thank the Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP, São Paulo, Brazil, 2018/25207-0), the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, Brasília, Brazil, 401170/2016-0) and the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES, Brasília, Brazil, 88887.115406/2015) for financial support and fellowships. Additio...