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Custodio-Mendoza JA, Muñoz-Menendez L, España-Fariñas MP, Valente IM, Rodrigues JA, Almeida PJ, Lorenzo RA, Carro AM. Simultaneous determination of carbonyl compounds related to thermal treatment and oxidative stability of infant formulas by gas-diffusion microextraction and high-performance liquid chromatography with ultraviolet detection. Anal Chim Acta 2024; 1288:342164. [PMID: 38220296 DOI: 10.1016/j.aca.2023.342164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 12/12/2023] [Accepted: 12/16/2023] [Indexed: 01/16/2024]
Abstract
Infant formulae are the only possible alternative to breastfeeding during the first year of life, so it is crucial to assure their innocuousness. Infant formula undergoes heat treatments to ensure safety and shelf life. However, such processes impact health as they lead to the formation of malondialdehyde, acrolein, and α-dicarbonyl compounds, related to Maillard reaction. Thus, there is a need for improved analytical methods to ensure the safety, quality, and nutritional value of infant formulae, and also exploring the potential of specific compounds as indicators for quality control and monitoring purposes. We developed and validated a novel, efficient, and cost-effective method using gas-diffusion microextraction for the simultaneous quantification of carbonyl compounds in infant formula. Malondialdehyde, acrolein, glyoxal, methylglyoxal, and diacetyl were detected as o-phenylenediamine derivatives using HPLC with UV detection. Parameters influencing extraction efficiency were studied using an asymmetric screening design. The validated method has shown excellent linearity, sensitivity, accuracy, and precision. It was applied to analyze 26 infant formula samples, including starter, follow-up, and special formulated powdered infant formula. Methylglyoxal was found in all samples (0.201-3.153 μg mL-1), while malondialdehyde was present only in certain starter formulas (1.033-1.802 μg mL-1). Acrolein (0.510-3.246 μg mL-1), glyoxal (0.109-1.253 μg mL-1), and diacetyl (0.119-2.001 μg mL-1) were detected in various sample types. Principal components and hierarchical cluster analyses have showcased distinct sample clustering based on analyte contents. This study presents a novel methodology for the analysis of markers of thermal treatment and oxidative stability in infant formula. It contributes to the characterization of the products' composition and quality control of infant formulae, thereby enhancing their safety and nutritional adequacy. This study also presents the first reported quantification of acrolein in infant formula and introduces the application of the acrolein-o-phenylenediamine derivative for food analysis.
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Affiliation(s)
- Jorge A Custodio-Mendoza
- Department of Technique and Food Development, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences (WULS-SGGW), Nowoursynowska 159 c, 02-776, Warszawa, Poland; Department of Analytical Chemistry, Nutrition and Food Science. University of Santiago de Compostela. 15782, Santiago de Compostela, Spain.
| | - Luis Muñoz-Menendez
- Department of Analytical Chemistry, Nutrition and Food Science. University of Santiago de Compostela. 15782, Santiago de Compostela, Spain
| | - M Pilar España-Fariñas
- Department of Analytical Chemistry, Nutrition and Food Science. University of Santiago de Compostela. 15782, Santiago de Compostela, Spain
| | - Inês M Valente
- REQUIMTE, LAQV, ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal; REQUIMTE, LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal
| | - José A Rodrigues
- REQUIMTE, LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal
| | - Paulo J Almeida
- REQUIMTE, LAQV, ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Rosa A Lorenzo
- Department of Analytical Chemistry, Nutrition and Food Science. University of Santiago de Compostela. 15782, Santiago de Compostela, Spain; Health Research Institute of Santiago de Compostela (IDIS). University of Santiago de Compostela. 15782, Santiago de Compostela, Spain
| | - Antonia M Carro
- Department of Analytical Chemistry, Nutrition and Food Science. University of Santiago de Compostela. 15782, Santiago de Compostela, Spain; Health Research Institute of Santiago de Compostela (IDIS). University of Santiago de Compostela. 15782, Santiago de Compostela, Spain; Instituto de Materiais (iMATUS). University of Santiago de Compostela, 15782, Santiago de Compostela, Spain.
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Rodrigues JA, Correia JH. Photodynamic Therapy for Colorectal Cancer: An Update and a Look to the Future. Int J Mol Sci 2023; 24:12204. [PMID: 37569580 PMCID: PMC10418644 DOI: 10.3390/ijms241512204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 07/24/2023] [Accepted: 07/27/2023] [Indexed: 08/13/2023] Open
Abstract
This review provides an update on the current state of photodynamic therapy (PDT) for colorectal cancer (CRC) and explores potential future directions in this field. PDT has emerged as a promising minimally invasive treatment modality that utilizes photosensitizers and specific light wavelengths to induce cell death in targeted tumor tissues. In recent years, significant progress has been made in understanding the underlying mechanisms, optimizing treatment protocols, and improving the efficacy of PDT for CRC. This article highlights key advancements in PDT techniques, including novel photosensitizers, light sources, and delivery methods. Furthermore, it discusses ongoing research efforts and potential future directions, such as combination therapies and nanotechnology-based approaches. By elucidating the current landscape and providing insights into future directions, this review aims to guide researchers and clinicians in harnessing the full potential of PDT for the effective management of CRC.
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Affiliation(s)
- José A. Rodrigues
- CMEMS-UMinho, University of Minho, 4800-058 Guimarães, Portugal;
- LABBELS—Associate Laboratory, 4800-122 Braga, Portugal
| | - José H. Correia
- CMEMS-UMinho, University of Minho, 4800-058 Guimarães, Portugal;
- LABBELS—Associate Laboratory, 4800-122 Braga, Portugal
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Moura A, Rodrigues JA, Guerreiro C, Pires-Morais G, Santos L, Melica B, Braga P, Fontes-Carvalho R. Impact of the use of cusp overlap projection technique in the incidence of post-TAVR permanent pacemaker implantation with self-expanding valves. Europace 2022. [DOI: 10.1093/europace/euac053.419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Introduction
Current rates of new Permanent Pacemaker (PPM) Implantations in the context of Transcatheter Aortic Valve Replacement (TAVR) range from 2-36% and that necessity is related to worse prognosis. The use of self-expanding valves and a lower valve implantation depth are two factors associated with an increased risk of conduction disturbances post-TAVR. Theoretically, cusp overlap implantation technique has the potential to enable a higher valve deployment by eliminating parallax of the delivery catheter.
Aim
To compare the in-hospital incidence of PPM post-TARV using self-expandable valve according to the fluoroscopic guidance technique.
Methods
Retrospective, single-centre study, with evaluation of patients consecutively submitted to TAVR with self-expanding CoreValveTM between July 2020 and December 2021 dichotomized according to the use of cusp overlap implantation technique for fluoroscopic valve implantation guidance.
Results
138 patients were included, predominantly women (57.2%), with a mean age of 78.4±8.0 years old, with severe aortic stenosis of the native valve being the most common indication for TAVI (85.5%). Cusp overlap view technique was applied in 50.7% of the patients (n=70). Frailty and co-morbidities were the most common cause for surgical refusal (54.3%). There was a significantly higher percentage of hypertensive patients (92.9% vs. 77.9%), lower previous aortic valve surgery (2.9% vs. 16.2%) and lower percentage of patients previously medicated with b-blockers in the group of patients in whom was used the cusp overlap technique; there were no other relevant differences related to the baseline characteristics. First degree atrioventricular block was present in 19.6% and complete right bundle block in 13.6% of the patients. Incidence of in-hospital post-TAVR PPM implantation wasn’t significantly different between the two cohorts of patients (cusp overlap vs. standard approach: 24.3% vs. 26.5%, p=0.77) (71.4% implanted in the context of complete heart block). Likewise, there were similar proportions of in-hospital new-onset of complete left bundle branch block (35.8% vs. 37.3%, p=0.86), volume of contrast used (140.6±37.5 mL vs. 145.2±51.5 mL, p=0.12), fluoroscopy time (15.6±8.8 min vs. 19.6±8.9 min, p=0.40) and radiation dose (556.3±320.6 mGy vs. 859.4±531.2 mGy, p=0.06).
Conclusions
This study shows that using the cusp overlap view for self-expanding valve implantation does not seem to achieve a significant reduction in in-hospital PPM implantation rate in comparison with the traditional 3 cusp co-planar fluoroscopic view. A larger and probably randomized clinical trial is needed to confirm these results.
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Affiliation(s)
- A Moura
- District Hospital of Santarem, Santarem, Portugal
| | - JA Rodrigues
- Hospital Center of Vila Nova de Gaia/Espinho, Cardiology, Vila Nova de Gaia, Portugal
| | - C Guerreiro
- Hospital Center of Vila Nova de Gaia/Espinho, Cardiology, Vila Nova de Gaia, Portugal
| | - G Pires-Morais
- Hospital Center of Vila Nova de Gaia/Espinho, Cardiology, Vila Nova de Gaia, Portugal
| | - L Santos
- Hospital Center of Vila Nova de Gaia/Espinho, Cardiology, Vila Nova de Gaia, Portugal
| | - B Melica
- Hospital Center of Vila Nova de Gaia/Espinho, Cardiology, Vila Nova de Gaia, Portugal
| | - P Braga
- Hospital Center of Vila Nova de Gaia/Espinho, Cardiology, Vila Nova de Gaia, Portugal
| | - R Fontes-Carvalho
- Hospital Center of Vila Nova de Gaia/Espinho, Cardiology, Vila Nova de Gaia, Portugal
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Cordeiro L, Cabrita ARJ, Oliveira HM, Maia MRG, Rodrigues JA, Fonseca AJM, Valente IM. A Novel Approach for Monitoring the Volatile Metabolome in Biological Samples from Ruminants through Miniaturized Liquid-Liquid Extraction and Multiclass Gas Chromatography Analysis. J Agric Food Chem 2022; 70:3886-3897. [PMID: 35298153 PMCID: PMC9776526 DOI: 10.1021/acs.jafc.1c06662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A straightforward and versatile methodology for the extraction of volatile metabolites in biological samples from ruminants for gas chromatography analysis is proposed. The methodology was applied in the determination of multiclass metabolites (short-chain fatty acids, aldehydes, alcohols, ketones, esters, phenols, and sulfides) in different analytical matrices (rumen fluid, urine, and feces) collected from Holstein cows. The 24 multiclass volatile metabolites reported in the different biological samples and their respective concentrations were critically discussed in the context of digestive physiology. Most detected compounds are derived from the rumen and lower gut fermentation of carbohydrates, proteins, and lipids or their metabolism, being consistent with the prior state of the art. The proposed method also takes advantage of the already existing tools in animal nutrition laboratories, providing a novel methodological ground that can generate relevant bioanalytical information with a significant impact on ruminant's nutritional studies.
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Affiliation(s)
- Liliana Cordeiro
- REQUIMTE, LAQV, ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Ana R J Cabrita
- REQUIMTE, LAQV, ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Hugo M Oliveira
- INL, International Iberian Nanotechnology Laboratory, Avenida Mestre José Veiga s/n, 4715-330 Braga, Portugal
| | - Margarida R G Maia
- REQUIMTE, LAQV, ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - José A Rodrigues
- REQUIMTE, LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal
| | - António J M Fonseca
- REQUIMTE, LAQV, ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Inês M Valente
- REQUIMTE, LAQV, ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
- REQUIMTE, LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal
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Freitas RB, Rodrigues JA, Puga H, Correia JH. Design, simulation, and fabrication of an ingestible capsule with gastric balloon for obesity treatment. Biomed Phys Eng Express 2021; 7. [PMID: 34388748 DOI: 10.1088/2057-1976/ac1d88] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 08/13/2021] [Indexed: 11/11/2022]
Abstract
The treatment of obesity based only on lifestyle changes has been shown ineffectiveness in a long-term period. The development of more definitive and non-invasive therapies has been the subject of study. In this paper, a magnetically driven ingestible capsule with the capacity to inflate a gastric balloon is devised, simulated, and fabricated. The balloon is inflated to a volume of 150 ml using an acid-base reaction between citric acid and potassium bicarbonate. Finite element method simulations were performed to study the interaction between the permanent external magnet and the ingestible capsule and confirm the magnetic activation mechanism. A fabrication process was proposed to manufacture a polydimethylsiloxane (PDMS) balloon in a simple, functional, and reproducible way. The two layers and 1:8 ratio balloons are the most cost-effective without compromising their mechanical properties. The capsule body parts manufactured by a three-dimensional (3D) printing process - Digital Light Processing (DLP) showed high accuracy and excellent resolution. This study demonstrated that the proposed ingestible capsule would successfully inflate the gastric balloon to treat obesity.
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Affiliation(s)
- R B Freitas
- CMEMS-UMinho, University of Minho, Campus Azurém, 4800-058, Guimarães, Portugal
| | - J A Rodrigues
- CMEMS-UMinho, University of Minho, Campus Azurém, 4800-058, Guimarães, Portugal
| | - H Puga
- CMEMS-UMinho, University of Minho, Campus Azurém, 4800-058, Guimarães, Portugal
| | - J H Correia
- CMEMS-UMinho, University of Minho, Campus Azurém, 4800-058, Guimarães, Portugal
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Pimenta S, Rodrigues JA, Machado F, Ribeiro JF, Maciel MJ, Bondarchuk O, Monteiro P, Gaspar J, Correia JH, Jacinto L. Double-Layer Flexible Neural Probe With Closely Spaced Electrodes for High-Density in vivo Brain Recordings. Front Neurosci 2021; 15:663174. [PMID: 34211364 PMCID: PMC8239195 DOI: 10.3389/fnins.2021.663174] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 05/19/2021] [Indexed: 11/13/2022] Open
Abstract
Flexible polymer neural probes are an attractive emerging approach for invasive brain recordings, given that they can minimize the risks of brain damage or glial scaring. However, densely packed electrode sites, which can facilitate neuronal data analysis, are not widely available in flexible probes. Here, we present a new flexible polyimide neural probe, based on standard and low-cost lithography processes, which has 32 closely spaced 10 μm diameter gold electrode sites at two different depths from the probe surface arranged in a matrix, with inter-site distances of only 5 μm. The double-layer design and fabrication approach implemented also provides additional stiffening just sufficient to prevent probe buckling during brain insertion. This approach avoids typical laborious augmentation strategies used to increase flexible probes’ mechanical rigidity while allowing a small brain insertion footprint. Chemical composition analysis and metrology of structural, mechanical, and electrical properties demonstrated the viability of this fabrication approach. Finally, in vivo functional assessment tests in the mouse cortex were performed as well as histological assessment of the insertion footprint, validating the biological applicability of this flexible neural probe for acquiring high quality neuronal recordings with high signal to noise ratio (SNR) and reduced acute trauma.
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Affiliation(s)
- Sara Pimenta
- CMEMS-UMinho, Department of Industrial Electronics, University of Minho, Guimarães, Portugal
| | - José A Rodrigues
- CMEMS-UMinho, Department of Industrial Electronics, University of Minho, Guimarães, Portugal
| | - Francisca Machado
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - João F Ribeiro
- CMEMS-UMinho, Department of Industrial Electronics, University of Minho, Guimarães, Portugal
| | - Marino J Maciel
- CMEMS-UMinho, Department of Industrial Electronics, University of Minho, Guimarães, Portugal
| | | | - Patricia Monteiro
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - João Gaspar
- International Iberian Nanotechnology Laboratory (INL), Braga, Portugal
| | - José H Correia
- CMEMS-UMinho, Department of Industrial Electronics, University of Minho, Guimarães, Portugal
| | - Luis Jacinto
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
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Reichel S, Carvalho DO, Santos JR, Bednar P, Rodrigues JA, Guido LF. Profiling the volatile carbonyl compounds of barley and malt samples using a low-pressure assisted extraction system. Food Control 2021. [DOI: 10.1016/j.foodcont.2020.107568] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Goulart M, Fugolin AP, Lewis SH, Rodrigues JA, Erhardt MC, Pfeifer CS. Thiourethane filler functionalization for dental resin composites: Concentration-dependent effects on toughening, stress reduction and depth of cure. Mater Sci Eng C Mater Biol Appl 2021; 118:111535. [PMID: 33255088 PMCID: PMC7708674 DOI: 10.1016/j.msec.2020.111535] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 09/07/2020] [Accepted: 09/14/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVES The aim of this study was to modify the surface of fillers used in dental composites by the synthesis of two novel thiourethane oligomeric silanes, used to functionalize the silica-containing inorganic particles. Several thiourethane silane concentrations were tested during the silanization process to systematically assess the effect of silane coverage on experimental composite conversion, polymerization stress and fracture toughness. MATERIALS AND METHODS Two different thiourethane silanes were synthesized based either on 1,6-hexanediol-diissocynate (HDDI), or 1,3-bis(1-isocyanato-1-methylethyl) benzene (BDI). Conventional 3-(Trimethoxysilyl)propyl methacrylate was used as the control. Glass fillers were silanized with 1, 2 or 4 wt% of each thiourethane silane, then evaluated by thermogravimetrical analysis. Photopolymerizable resin composites were prepared with Bis-GMA/UDMA/TEGDMA and 50 wt% silanized glass filler. Polymerization kinetics and degree of conversion were tested using Near-IR. Bioman was used to test polymerization stress. Data were analyzed with two-way ANOVA/Tukey's test (α = 5%). RESULTS The mass of silane coupled to the filler increased with the concentrations of thiourethane in the silanizing solution, as expected. Thiourethane-containing groups exhibited significantly higher degree of conversion compared to control groups, except for BDI 4%. HDDI 4%, BDI 2% and BDI 4% showed significantly lower polymerization stress than control groups. HDDI 4% exhibited significantly higher fracture toughness. CONCLUSIONS AND CLINICAL SIGNIFICANCE Novel filler functionalization with thiourethane silanes may be a promising alternative for improving dental composites properties by significantly increasing the degree of conversion, fracture toughness and reducing the polymerization stress.
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Affiliation(s)
- M Goulart
- Department of Conservative Dentistry, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - A P Fugolin
- Oregon Health & Science University, Portland, OR, United States of America
| | - S H Lewis
- Oregon Health & Science University, Portland, OR, United States of America
| | - J A Rodrigues
- Department of Conservative Dentistry, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - M C Erhardt
- Department of Conservative Dentistry, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - C S Pfeifer
- Oregon Health & Science University, Portland, OR, United States of America.
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Wagner VP, Arrué T, Hilgert E, Arús NA, da Silveira HLD, Martins MD, Rodrigues JA. Prevalence and distribution of dental anomalies in a paediatric population based on panoramic radiographs analysis. Eur J Paediatr Dent 2020; 21:292-298. [PMID: 33337905 DOI: 10.23804/ejpd.2020.21.04.7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIM To evaluate the frequency and distribution of dental anomalies (DA) in a paediatric population. MATERIALS AND METHODS Panoramic digital radiographs of children between 6 and 12 years old performed at a reference centre for radiographic exams were accessed. Two calibrated examiners evaluated the radiographs. The association between variables and outcomes was assessed using non-parametric tests. The significance level was set at 5%. RESULTS Five hundred and twelve individuals were included and 61.3% presented at least one DA. The mean age of patients with DA (9.35±1.60) was significantly higher compared to patients with no anomalies (7.90±1.58). Patients with supernumerary tooth, however, were significantly younger. The most frequent DA were permanent tooth radicular dilacerations (38.1%), permanent tooth agenesis (29.3%), supernumerary tooth (6.4%) and impacted tooth (6.4%). Anterior teeth and female patients were more affected by radicular dilacerations. Dental agenesis was more frequent in the third molars followed by the upper lateral incisor. CONCLUSION DA are quite frequent in the paediatric population and the most common DA observed herein could only be identified through imaging exams. The most appropriate timing to perform an investigation for the detection of dental anomalies appears to be between 9 and 10 years old.
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Affiliation(s)
- V P Wagner
- Academic Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry - University of Sheffield, UK
| | - T Arrué
- Paediatric Dentistry Division, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - E Hilgert
- Paediatric Dentistry Division, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - N A Arús
- Oral Radiology Division, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - H L D da Silveira
- Oral Radiology Division, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - M D Martins
- Oral Pathology Division, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - J A Rodrigues
- Paediatric Dentistry Division, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
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Erhardt MCG, Goulart M, Jacques RC, Rodrigues JA, Pfeifer CS. Effect of different composite modulation protocols on the conversion and polymerization stress profile of bulk-filled resin restorations. Dent Mater 2020; 36:829-837. [PMID: 32446504 PMCID: PMC7305981 DOI: 10.1016/j.dental.2020.03.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 03/15/2020] [Accepted: 03/16/2020] [Indexed: 11/27/2022]
Abstract
OBJECTIVE The aim of this in vitro study was to test the effect of different composite modulation protocols (pre-heating, light-curing time and oligomer addition) for bulk filling techniques on resin polymerization stress, intra-pulpal temperature change and degree of conversion. METHODS Class I cavities (4mm depth×5mm diameter) were prepared in 48 extracted third molars and divided in 6 groups. Restorations were completed with a single increment, according to the following groups: (1) Filtek Z250XT (room temperature - activated for 20s); (2) Filtek Z250XT (at room temperature - activated for 40s); (3) Filtek Z250XT (pre-heated at 68°C - activated for 20s); (4) Filtek Z250XT (pre-heated at 68°C - activated for 40s); (5) Filtek BulkFill (at room temperature - activated for 20s); (6) Filtek Z250XT (modified by the addition of a thio-urethane oligomer at room temperature - activated for 40s). Acoustic emission test was used as a real-time polymerization stress (PS) assessment. The intra-pulpal temperature change was recorded with a thermocouple and bottom/top degree of conversion (DC) measured by Raman spectroscopy. Data were analyzed with one-way ANOVA/Tukey's test (α=5%). RESULTS Pre-heating the resin composite did not influence the intra-pulpal temperature (p=0.077). The thio-urethane-containing composite exhibited significantly less PS, due to a lower number of acoustic events. Groups with pre-heated composites did not result in significantly different PS. Filtek BulkFill and the thio-urethane experimental composite presented significantly higher DC. SIGNIFICANCE Resin composite pre-heating was not able to reduce polymerization stress in direct restorations. However, thio-urethane addition to a resin composite could reduce the polymerization stress while improving the DC.
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Affiliation(s)
- M C G Erhardt
- Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
| | - M Goulart
- Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - R C Jacques
- Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - J A Rodrigues
- Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - C S Pfeifer
- Oregon Health and Science University, Portland, OR, USA
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Sousa B, Lopes J, Leal A, Martins M, Soares C, Valente IM, Rodrigues JA, Fidalgo F, Teixeira J. Response of Solanum lycopersicum L. to diclofenac - Impacts on the plant's antioxidant mechanisms. Environ Pollut 2020; 258:113762. [PMID: 31864077 DOI: 10.1016/j.envpol.2019.113762] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 11/27/2019] [Accepted: 12/07/2019] [Indexed: 06/10/2023]
Abstract
One emerging problem that recently has become a vastly acknowledged topic of concern is the environmental contamination by pharmaceuticals. Diclofenac (DCF) is one of the most common pharmaceuticals found, due to its high utilization and low removal rate in wastewater treatment processes. In this work, Solanum lycopersicum L. was used as a model to unravel how DCF contamination can affect crops, focusing on the internal mechanisms triggered by this exposure. For this purpose, plants were exposed to two different DCF concentrations (0.5 mg L-1 and 5 mg L-1). Results obtained here point towards a loss of shoot performance when plants were exposed to very high concentrations of DCF, but no delay or loss of yield in the flowering and fruit stages were ascribed to DCF contamination. Our data shows that a state of oxidative stress due to high reactive oxygen species accumulation was associated with this contamination, with very high DCF levels leading to a rise of lipid peroxidation, possibly accentuated by the inhibition of ROS-scavenging enzymes and unable to be counteracted by the visible upregulation of proline and the thiol-based redox network. Overall, these results allow to infer that in the current environmental context, no noticeable negative effects should be associated with the presence of DCF in soils where this crop is cultivated. However, the oxidative stress and lower biomass associated with the highest concentration are alarming, since DCF levels in the environment are continuously increasing and further measures are necessary to assess this problematic.
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Affiliation(s)
- Bruno Sousa
- GreenUPorto - Sustainable Agrifood Production Research Centre, Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal.
| | - Jorge Lopes
- GreenUPorto - Sustainable Agrifood Production Research Centre, Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal
| | - André Leal
- GreenUPorto - Sustainable Agrifood Production Research Centre, Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal
| | - Maria Martins
- GreenUPorto - Sustainable Agrifood Production Research Centre, Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal
| | - Cristiano Soares
- GreenUPorto - Sustainable Agrifood Production Research Centre, Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal
| | - Inês M Valente
- REQUIMTE, LAQV, ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal; REQUIMTE, LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal
| | - José A Rodrigues
- REQUIMTE, LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal
| | - Fernanda Fidalgo
- GreenUPorto - Sustainable Agrifood Production Research Centre, Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal
| | - Jorge Teixeira
- GreenUPorto - Sustainable Agrifood Production Research Centre, Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal
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Santos JR, Rodrigues JA. Characterization of volatile carbonyl compounds in defective green coffee beans using a fan assisted extraction process. Food Control 2020. [DOI: 10.1016/j.foodcont.2019.106879] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Goldenfum GM, Silva NC, Almeida IA, Moura MS, Silva BB, Jardim JJ, Rodrigues JA. Risk indicators of caries lesion activity in children. Eur J Paediatr Dent 2019; 20:179-182. [PMID: 31489814 DOI: 10.23804/ejpd.2019.20.03.02] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
AIM Determine the risk indicators of caries lesion activity in a child sample from Porto Alegre, Brazil. MATERIALS AND METHODS Study design: cross-sectional study included 97 individuals aged between 3 and 12-years who sought treatment at the Paediatric Clinic at the Dental Teaching Hospital at the Federal University of Rio Grande do Sul, between 2017 and 2018. Questionnaires recorded sociodemographic data, frequency of sugar intake, and toothbrushing frequency. Clinical examination included the visible plaque index, gingival blood index, and caries lesion activity. RESULTS s The mean of surfaces with active caries lesions was 9.81 (IC 95% = 8.47-11.15). Children who presented a frequency of sugar intake of twice/day (PR = 1.62, IC 95% = 1.30-2.03), three times/day (PR = 1.68, IC 95% = 1.37-2.08), and four or more times/day (PR = 1.59, IC 95% = 1.26-2.01), were likely to have active lesions. Ages between 8 and 12-years were associated with a lower probability of active carious lesions (PR = 0.77, IC 95% = 0.66-088). STATISTICS Poisson regression analysis was used to estimate the child's relative risk of developing new active caries lesions. CONCLUSIONS The monitoring of sugar intake should be considered a strong instrument for the strategies of control of dental caries in children.
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Affiliation(s)
- G M Goldenfum
- School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - N C Silva
- School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - I A Almeida
- School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - M S Moura
- School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - B B Silva
- School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - J J Jardim
- School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - J A Rodrigues
- School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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Sousa MBT, Santos JR, Almeida PJ, Rodrigues JA. Low pressure ion pair chromatography with amperometric detection for the determination of trigonelline in coffee samples. Food Res Int 2018; 114:223-229. [PMID: 30361020 DOI: 10.1016/j.foodres.2018.07.068] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 07/06/2018] [Accepted: 07/31/2018] [Indexed: 11/17/2022]
Abstract
In this work, the use of ion pair chromatography strategy in low pressure chromatographic flow systems is explored for the first time. The straightforward flow manifold encompassed a peristaltic pump, an injection valve and a 1 cm-length C18 monolithic column. The amperometric detection system relied on a boron-doped diamond electrode, used as working electrode. The determination of trigonelline in coffee samples was the case-study selected. This alkaloid is an important quality marker for this commodity and is usually determined using HPLC-UV methodologies. The proposed methodology, based on ion-pair chromatography with amperometric detection, enabled the quantitative resolution of the studied analyte from the matrix compounds by adding to the mobile phase the ion pair reagent, 1-tetradecanosulfonate sodium. The present work, following the recent developments of the low pressure chromatography approach, demonstrates the potentialities of coupling monolithic columns to traditional flow analysis systems for separation and quantification of ionic or ionisable compounds.
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Affiliation(s)
- Manuela B T Sousa
- REQUIMTE/LAQV - Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - João Rodrigo Santos
- REQUIMTE/LAQV - Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal.
| | - P J Almeida
- REQUIMTE/LAQV - Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - J A Rodrigues
- REQUIMTE/LAQV - Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
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15
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Valente IM, Cabrita ARJ, Malushi N, Oliveira HM, Papa L, Rodrigues JA, Fonseca AJM, Maia MRG. Unravelling the phytonutrients and antioxidant properties of European Vicia faba L. seeds. Food Res Int 2018; 116:888-896. [PMID: 30717020 DOI: 10.1016/j.foodres.2018.09.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 08/27/2018] [Accepted: 09/08/2018] [Indexed: 12/30/2022]
Abstract
For the first time, seven European varieties of Vicia faba L. seeds were investigated for (1) their phytonutrients profile by HPLC-DAD-MS/MS, (2) total phenolic content (TPC), and (3) antioxidant capacity (DPPH and FRAP assays). A wide range of compounds were identified, namely alkaloids, organic acids, terpenoids, jasmonates, and phenolics; these two latter being the most abundant. TPC ranged between 2.62 and 4.3 mg (gallic acid equivalent) g-1 dry weight, for V. faba major variety Belshi and V. faba minor variety Bauska, respectively. The DPPH radical scavenging capacity showed poor correlation (r = 0.550, P = .041) with TPC, suggesting the presence of other antioxidant sources than phenolics. Still, FRAP was positively correlated with TPC (r = 0.709, P < .01) and DPPH (r = 0.819, P < .01). These results elucidated the phytonutrients and antioxidant properties of V. faba L. seeds as functional food sources.
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Affiliation(s)
- Inês M Valente
- REQUIMTE, LAQV, ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; REQUIMTE, LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal.
| | - Ana R J Cabrita
- REQUIMTE, LAQV, ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Nertila Malushi
- REQUIMTE, LAQV, ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; Department of Animal Production, Agricultural University of Tirana, Koder Kamez 1001, Albania
| | - Hugo M Oliveira
- REQUIMTE, LAQV, ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Lumturi Papa
- Department of Animal Production, Agricultural University of Tirana, Koder Kamez 1001, Albania
| | - José A Rodrigues
- REQUIMTE, LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal
| | - António J M Fonseca
- REQUIMTE, LAQV, ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Margarida R G Maia
- REQUIMTE, LAQV, ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
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16
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Valente IM, Maia MRG, Malushi N, Oliveira HM, Papa L, Rodrigues JA, Fonseca AJM, Cabrita ARJ. Profiling of phenolic compounds and antioxidant properties of European varieties and cultivars of Vicia faba L. pods. Phytochemistry 2018; 152:223-229. [PMID: 29787901 DOI: 10.1016/j.phytochem.2018.05.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 05/09/2018] [Accepted: 05/12/2018] [Indexed: 05/27/2023]
Abstract
Vicia faba L. pods are a by-product generated from the industrial processing of beans for human and animal consumption. As phenolic compounds may play important roles in health, the present work envisaged the phenolic characterization of seven European varieties and cultivars of V. faba (major and minor) pods and the assessment of their antioxidant activity. The V. faba methanolic extracts were characterized by HPLC-DAD-MS/MS for identification of polyphenolic compounds. The total phenolic content and antioxidant capacity of the extracts were evaluated by colorimetric methods (Folin-Ciocalteu, DPPH scavenging capacity assay, and FRAP assay). Main compounds identified by HPLC-DAD-MS/MS were derivatives of caffeic acid, coumaric acid and kaempferol. The broad bean Jögeva variety presented the highest content of free and esterified phenolics (26.3 and 26.7 mg 100 g-1 dry weight, respectively), followed by the horse bean varieties Bauska and Lielplatones. These results were corroborated by the analysis of total phenolic content, DPPH scavenging capacity and FRAP. This study confirmed the rich phenolic content of V. faba pods suggesting to be an interesting novel source for animal nutrition, promoting product quality and consumers' health.
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Affiliation(s)
- Inês M Valente
- REQUIMTE, LAQV, ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal; REQUIMTE, LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal.
| | - Margarida R G Maia
- REQUIMTE, LAQV, ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Nertila Malushi
- REQUIMTE, LAQV, ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal; Department of Animal Production, Agricultural University of Tirana, Koder Kamez, 1001, Albania
| | - Hugo M Oliveira
- REQUIMTE, LAQV, ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Lumturi Papa
- Department of Animal Production, Agricultural University of Tirana, Koder Kamez, 1001, Albania
| | - José A Rodrigues
- REQUIMTE, LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal
| | - António J M Fonseca
- REQUIMTE, LAQV, ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Ana R J Cabrita
- REQUIMTE, LAQV, ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
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Xavier Fontes A, Montenegro Sa F, Passos Silva M, Caeiro D, Dias A, Santos L, Rodrigues JA, Tavares A, Braga P. P4659Evolution in the use of intra-aortic balloon pump in patients with cardiogenic shock. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- A Xavier Fontes
- Hospital Divino Espirito Santo, Cardiology, Ponta Delgada, Portugal
| | | | - M Passos Silva
- Hospital Center of Vila Nova de Gaia/Espinho, Cardiology, Vila Nova de Gaia, Portugal
| | - D Caeiro
- Hospital Center of Vila Nova de Gaia/Espinho, Cardiology, Vila Nova de Gaia, Portugal
| | - A Dias
- Hospital Center of Vila Nova de Gaia/Espinho, Cardiology, Vila Nova de Gaia, Portugal
| | - L Santos
- Hospital Center of Vila Nova de Gaia/Espinho, Cardiology, Vila Nova de Gaia, Portugal
| | - J A Rodrigues
- Hospital Center of Vila Nova de Gaia/Espinho, Cardiology, Vila Nova de Gaia, Portugal
| | - A Tavares
- Hospital Divino Espirito Santo, Cardiology, Ponta Delgada, Portugal
| | - P Braga
- Hospital Center of Vila Nova de Gaia/Espinho, Cardiology, Vila Nova de Gaia, Portugal
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Costa ML, Rodrigues JA, Azevedo J, Vasconcelos V, Eiras E, Campos MG. Hepatotoxicity induced by paclitaxel interaction with turmeric in association with a microcystin from a contaminated dietary supplement. Toxicon 2018; 150:207-211. [PMID: 29857089 DOI: 10.1016/j.toxicon.2018.05.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 05/24/2018] [Accepted: 05/28/2018] [Indexed: 11/24/2022]
Abstract
A 67-year-old Caucasian male with lung cancer was presented to the Emergency Department with asthenia, anorexia, jaundice and choluria. The patient's lung cancer was being treated medically by a combination of paclitaxel/carboplatin with bi-monthly frequency. The patient was also self-medicating with several natural products, including Chlorella (520 mg/day), Silybum marianum (total of 13.5 mg silymarin/day), zinc sulphate (5.5 mg), selenium (50 μg) and 15 g/day of Curcuma longa. In first chemotherapy cycle no toxicity was observed even he was taking other medications as budesonide and sitagliptin. The toxic events started only after the introduction of the dietary products. Chlorella had contamination with cyanobacteria (Oscillatoriales) and 1.08 μg of cyanotoxin Microcystin-LR (MC-LR) per gram of biomass was found. Patient was consuming ca 0.01 μg MC-LR/kg/day. This case report describes the first known case of paclitaxel toxicity probably related to pharmacokinetic interaction with Turmeric and a contaminated Chlorella supplement resulting in an acute toxic hepatitis and the impact on oncologic patient health.
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Affiliation(s)
- Maria Luísa Costa
- Observatory of Herb-Drug Interactions/Faculty of Pharmacy, University of Coimbra, Portugal.
| | - José A Rodrigues
- Observatory of Herb-Drug Interactions/Faculty of Pharmacy, University of Coimbra, Portugal; College of Science, Northeastern University, Boston, MA, USA.
| | - Joana Azevedo
- Interdisciplinary Centre of Marine and Environmental Research, CIIMAR/CIMAR, Matosinhos, Portugal.
| | - Vitor Vasconcelos
- Interdisciplinary Centre of Marine and Environmental Research, CIIMAR/CIMAR, Matosinhos, Portugal; Faculty of Sciences, University of Porto, Portugal.
| | - Eduardo Eiras
- Internal Medicine Service, Pedro Hispano Hospital, Matosinhos, Portugal.
| | - Maria Graça Campos
- Observatory of Herb-Drug Interactions/Faculty of Pharmacy, University of Coimbra, Portugal; CQ - Centre of Chemistry - Faculdade de Ciências e Tecnologia, Rua Larga, University of Coimbra, Portugal.
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Cordeiro L, Valente IM, Santos JR, Rodrigues JA. Qualitative carbonyl profile in coffee beans through GDME-HPLC-DAD-MS/MS for coffee preliminary characterization. Food Res Int 2018; 107:536-543. [DOI: 10.1016/j.foodres.2018.02.072] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 02/11/2018] [Accepted: 02/27/2018] [Indexed: 11/25/2022]
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Ferreira-Filho RC, Ely C, Amaral RC, Rodrigues JA, Roulet JF, Cassoni A, Reis AF. Effect of Different Adhesive Systems Used for Immediate Dentin Sealing on Bond Strength of a Self-Adhesive Resin Cement to Dentin. Oper Dent 2018; 43:391-397. [PMID: 29630484 DOI: 10.2341/17-023-l] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE The purpose of this study was to investigate the immediate and three-month water storage behavior of adhesives when used for immediate dentin sealing (IDS). METHODS AND MATERIALS Four adhesive systems were used to perform IDS: a one-step self-etch (Xeno V), a two-step self-etch (Clearfil SE Bond), a two-step etch-and-rinse (XP Bond), and a three-step etch-and-rinse (Optibond FL). For the control group, IDS was not performed. The self-adhesive resin cement RelyX Unicem was used for the luting procedures. After seven days of water storage, specimens (n=6) were sectioned into beams (n=5) with an approximately 1-mm2 cross-sectional area. Half of the specimens were tested in tension after seven days of water storage at 37°C, while the other half was stored for three months prior to testing in tension using a universal testing machine (1 mm/min). The failure pattern was determined using a stereomicroscope and scanning electron microscopy. Microtensile bond strength (μTBS) data were statistically analyzed by two-way analysis of variance and Tukey post hoc test (α=0.05). RESULTS After seven days, the control group presented the lowest μTBS but did not differ from XP Bond and Clearfil SE Bond. After three months, there was no μTBS difference between the IDS groups and the control. CONCLUSIONS After seven days of water storage, the groups with IDS presented higher μTBS values than the control group, although XP Bond and Clearfil SE Bond did not present significant differences. However, after three months of storage in water, IDS groups did not differ significantly from control group, which did not receive IDS.
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Couto RAS, Gonçalves LM, Carvalho F, Rodrigues JA, Rodrigues CMP, Quinaz MB. The Analytical Challenge in the Determination of Cathinones, Key-Players in the Worldwide Phenomenon of Novel Psychoactive Substances. Crit Rev Anal Chem 2018; 48:372-390. [DOI: 10.1080/10408347.2018.1439724] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Rosa A. S. Couto
- LAQV/REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Luís Moreira Gonçalves
- LAQV/REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Porto, Portugal
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo (USP), São Paulo, Brazil
| | - Félix Carvalho
- UCIBIO/REQUIMTE, Laboratory of Toxicology, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - José A. Rodrigues
- LAQV/REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Porto, Portugal
| | - Cecília M. P. Rodrigues
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - M. Beatriz Quinaz
- LAQV/REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
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Oliveira PHC, Rodrigues JA, Roulet JF, Cassoni A. Resistência de União de Zircônia Aderida a Cerâmica Baseada em Vidro com Diferentes Liners. J Health Scie 2018. [DOI: 10.17921/2447-8938.2017v19n5p286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
O objetivo do estudo foi avaliar a resistência de união ao microcisalhamento (uSBS) da interface de zircônia e cerâmica baseada em vidro tratada com diferentes liners após envelhecimento. Foram preparadas 20 barras (10x6x4 mm3) de zircônia para cada grupo, divididas em 3 grupos conforme o tratamento de superfície, totalizando 60 barras de zircônia (IPS emax.ZirCAD, Ivoclar Vivadent) utilizadas para o processamento de infraestrutura do sistema CAD-CAM (computer-aided design and computer-aided design manufacturing). As amostras foram sinterizadas e submetidas a aplicação de liner (HeraCeram, Heraus Kulzer ou ZirLiner, Ivoclar Vivadent) de acordo com os seguintes grupos (n20): G1 - sem tratamento (controle) G2 – Liner HeraCeram G3 - Liner ZirLiner. As amostras de zircônia foram aderidas à cerâmica baseada em vidro (IPS e.max ZirPres, Ivoclar Vivadent) por meio da injeção pela técnica da cera perdida (conduto cilíndrico de 0,8mm de diâmetro). As amostras foram submetidas a 100.000 ciclos termo- mecânicos e, avaliadas por meio do teste uSBS. O modo de fratura e os aspectos morfológicos dos espécimes mais significativos foram analisados através de microscopia eletrônica de varredura. A análise estatística dos valores obtidos foi realizada por one-way ANOVA e teste de Tukey (a0,05). As médias da uSB (MPa) foram: G1-12,1B G2-9,7B G3-14,4A (médias seguidas por diferentes letras indicam diferença estatística). A aplicação do liner ZirLiner previamente à injeção, aumentou a resistência de união entre a zircônia e a cerâmica baseada em vidro.Palavras-chave: Cerâmica. Microcisalhamento. Resistência de União.
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Oliveira PH, Cassoni A, Brugnera A, Tenório IP, Rodrigues JA. Bond Strength of Abraded and Non-Abraded Bleached Enamel to Resin After Er,Cr:YSGG Laser Irradiation. Photomed Laser Surg 2017; 35:530-536. [DOI: 10.1089/pho.2016.4229] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Pedro H.C. Oliveira
- Dental Research and Graduate Studies Division, Department of Restorative Dentistry, Guarulhos University, Guarulhos, Brazil
| | - Alessandra Cassoni
- Dental Research and Graduate Studies Division, Department of Restorative Dentistry, Guarulhos University, Guarulhos, Brazil
| | - Aldo Brugnera
- Biomedicine Engineering Division, Camilo Castelo Branco University, São José dos Campos, Brazil
- The National Institute of Science and Technology–INCT “Basic Optics and Applied to Life Sciences, São Carlos-SP Brazil
| | - Ilana P. Tenório
- Dental Research and Graduate Studies Division, Department of Restorative Dentistry, Guarulhos University, Guarulhos, Brazil
| | - José A. Rodrigues
- Dental Research and Graduate Studies Division, Department of Restorative Dentistry, Guarulhos University, Guarulhos, Brazil
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Rodrigues JA, Sarti CS, Assunção CM, Arthur RA, Lussi A, Diniz MB. Evaluation of laser fluorescence in monitoring non-cavitated caries lesion progression on smooth surfaces in vitro. Lasers Med Sci 2017; 32:1793-1800. [PMID: 28669068 DOI: 10.1007/s10103-017-2262-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 06/11/2017] [Indexed: 10/19/2022]
Abstract
The aim of this study was to evaluate the performance of a pen-type laser fluorescence (LF) device (LFpen: DIAGNOdent pen) to detect and monitor the progression of caries-like lesions on smooth surfaces. Fifty-two bovine enamel blocks were submitted to three different demineralisation cycles for caries-like lesion induction using Streptococcus mutans, Lactobacillus casei and Actinomyces naeslundii. At baseline and after each cycle, the enamel blocks were analysed under Knoop surface micro-hardness (SMH) and an LFpen. One enamel block after each cycle was randomly chosen for Raman spectroscopy analysis. Cross-sectional micro-hardness (CSMH) was performed at different depths (20, 40, 60, 80 and 100 μm) in 26 enamel blocks after the second cycle and 26 enamel blocks after the third cycle. Average values of SMH (± standard deviation (SD)) were 319.3 (± 21.5), 80.5 (± 31.9), 39.8 (± 12.7), and 29.77 (± 10.34) at baseline and after the first, second and third cycles, respectively. Statistical significant difference was found among all periods (p < 0.01). The LFpen values were 4.3 (± 1.5), 7.5 (± 9.4), 7.1 (± 7.1) and 5.10 (± 3.58) at baseline and after the first, second, and third cycles, respectively, among all periods (p < 0.05). The CSMH values after the second and third cycles at 20, 40, 60, 80 and 100 μm were 182.8 (± 69.8), 226.1 (± 79.6), 247.20 (± 69.36), 262.35 (± 66.36) and 268.45 (± 65.49), and for the third cycle were 193.7 (± 73.4), 239.5 (± 81.5), 262.64 (± 82.46), 287.10 (± 78.44) and 284.79 (± 72.63) (n = 24 and 23), respectively. No correlation was observed between the LFpen and SMH values (p > 0.05). One sample of each cycle was characterised through Raman spectroscopy analysis. It can be concluded that LF was effective in detecting the first demineralisation on enamel; however, the method did not show any effect in monitoring lesion progression after three cycles of in vitro demineralisation.
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Affiliation(s)
- J A Rodrigues
- Department of Pediatric Dentistry, School of Dentistry of Rio Grande do Sul Federal University - UFRGS, Porto Alegre, RS, Brazil.
| | - C S Sarti
- Department of Pediatric Dentistry, School of Dentistry of Rio Grande do Sul Federal University - UFRGS, Porto Alegre, RS, Brazil
| | - C M Assunção
- Department of Pediatric Dentistry, School of Dentistry of Rio Grande do Sul Federal University - UFRGS, Porto Alegre, RS, Brazil
| | - R A Arthur
- Department of Public Health, School of Dentistry of Rio Grande do Sul Federal University - UFRGS, Porto Alegre, RS, Brazil
| | - A Lussi
- Department of Preventive, Restorative and Pediatric Dentistry, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - M B Diniz
- Department of Pediatric Dentistry, School of Dentistry of Cruzeiro do Sul University - UNICSUL, São Paulo, SP, Brazil
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Ramos RM, Gonçalves LM, Vyskočil V, Rodrigues JA. Voltammetric determination of trace amounts of diacetyl at a mercury meniscus modified silver solid amalgam electrode following gas-diffusion microextraction. Talanta 2017; 169:203-208. [DOI: 10.1016/j.talanta.2017.03.077] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 03/20/2017] [Accepted: 03/25/2017] [Indexed: 01/11/2023]
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Valente IM, Moreira MM, Neves P, da Fé T, Gonçalves LM, Almeida PJ, Rodrigues JA. An Insight on Salting-out Assisted Liquid-Liquid Extraction for Phytoanalysis. Phytochem Anal 2017; 28:297-304. [PMID: 28124812 DOI: 10.1002/pca.2676] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 12/10/2016] [Accepted: 12/10/2016] [Indexed: 06/06/2023]
Abstract
INTRODUCTION Salting-out assisted liquid-liquid extraction (SALLE) is a technique that, although simple and not requiring any complex equipment, is very powerful and versatile. It has obtained growing interest in bioanalysis particularly when combined with chromatographic techniques. OBJECTIVES Herein, fennel seeds (Foeniculum vulgare Mill.) were used as a case-study to show the application of SALLE in phytochemical analysis. MATERIAL AND METHODS SALLE combined with HPLC-UV-MS/MS and GC-MS. RESULTS By HPLC-UV-MS/MS analysis of the organic extract it was possible to identify various phenolic compounds, including quercetin derivatives, caffeic acid, p-coumaric acid and chlorogenic acid. The main compounds identified by GC-MS were estragole, fenchone, anisaldehyde, anethole, benzaldehyde, camphor and apiole. CONCLUSION HPLC and GC analysis of the extracts showed that it is possible to isolate, in only one step, a wide range of compounds with distinct properties, allowing a detailed phytochemical analysis. Copyright © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- Inês M Valente
- REQUIMTE/LAQV - Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Manuela M Moreira
- REQUIMTE/LAQV - Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
- REQUIMTE/LAQV - Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Porto, Portugal
| | - Pâmela Neves
- REQUIMTE/LAQV - Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
- Faculty of Animal Science and Food Engineering, University of São Paulo, São Paulo, Brazil
| | - Thiago da Fé
- REQUIMTE/LAQV - Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
- Campus Araguaia, Universidade Federal de Mato Grosso, Cuiabá, Brazil
| | - Luís M Gonçalves
- REQUIMTE/LAQV - Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Paulo J Almeida
- REQUIMTE/LAQV - Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - José A Rodrigues
- REQUIMTE/LAQV - Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
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Valente IM, Oliveira HM, Vaz CD, Ramos RM, Fonseca AJ, Cabrita AR, Rodrigues JA. Determination of ammonia nitrogen in solid and liquid high-complex matrices using one-step gas-diffusion microextraction and fluorimetric detection. Talanta 2017; 167:747-753. [DOI: 10.1016/j.talanta.2017.01.091] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 01/25/2017] [Accepted: 01/30/2017] [Indexed: 12/14/2022]
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Pereira CA, Rodrigues FL, Ruginsk SG, Zanotto CZ, Rodrigues JA, Duarte DA, Costa-Neto CM, Resstel LB, Carneiro FS, Tostes RC. Chronic treatment with fluoxetine modulates vascular adrenergic responses by inhibition of pre- and post-synaptic mechanisms. Eur J Pharmacol 2017; 800:70-80. [DOI: 10.1016/j.ejphar.2017.02.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 02/15/2017] [Accepted: 02/16/2017] [Indexed: 12/15/2022]
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Ramos RM, Brandão PF, Gonçalves LM, Vyskočil V, Rodrigues JA. Electrochemical sensing of total sulphites in beer using non-modified screen-printed carbon electrodes. J Inst Brew 2017. [DOI: 10.1002/jib.402] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Rui M. Ramos
- REQUIMTE/LAQV, Departamento de Química e Bioquímica; Faculdade de Ciências da Universidade do Porto; Rua do Campo Alegre, s/n 4169-007 Porto Portugal
| | - Pedro F. Brandão
- REQUIMTE/LAQV, Departamento de Química e Bioquímica; Faculdade de Ciências da Universidade do Porto; Rua do Campo Alegre, s/n 4169-007 Porto Portugal
| | - Luís M. Gonçalves
- REQUIMTE/LAQV, Departamento de Química e Bioquímica; Faculdade de Ciências da Universidade do Porto; Rua do Campo Alegre, s/n 4169-007 Porto Portugal
| | - Vlastimil Vyskočil
- Charles University; Faculty of Science, Department of Analytical Chemistry, UNESCO Laboratory of Environmental Electrochemistry; Hlavova 2030/8 12843 Prague 2 Czech Republic
| | - José A. Rodrigues
- REQUIMTE/LAQV, Departamento de Química e Bioquímica; Faculdade de Ciências da Universidade do Porto; Rua do Campo Alegre, s/n 4169-007 Porto Portugal
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Brandão PF, Ramos RM, Valente IM, Almeida PJ, Carro AM, Lorenzo RA, Rodrigues JA. Gas-diffusion microextraction coupled with spectrophotometry for the determination of formaldehyde in cork agglomerates. Anal Bioanal Chem 2017; 409:2885-2892. [DOI: 10.1007/s00216-017-0233-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 01/10/2017] [Accepted: 01/27/2017] [Indexed: 10/20/2022]
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Carqueijeiro I, Guimarães AL, Bettencourt S, Martínez-Cortés T, Guedes JG, Gardner R, Lopes T, Andrade C, Bispo C, Martins NP, Andrade P, Valentão P, Valente IM, Rodrigues JA, Duarte P, Sottomayor M. Isolation of Cells Specialized in Anticancer Alkaloid Metabolism by Fluorescence-Activated Cell Sorting. Plant Physiol 2016; 171:2371-8. [PMID: 27356972 PMCID: PMC4972299 DOI: 10.1104/pp.16.01028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 06/20/2016] [Indexed: 05/28/2023]
Abstract
Plant specialized metabolism often presents a complex cell-specific compartmentation essential to accomplish the biosynthesis of valuable plant natural products. Hence, the disclosure and potential manipulation of such pathways may depend on the capacity to isolate and characterize specific cell types. Catharanthus roseus is the source of several medicinal terpenoid indole alkaloids, including the low-level anticancer vinblastine and vincristine, for which the late biosynthetic steps occur in specialized mesophyll cells called idioblasts. Here, the optical, fluorescence, and alkaloid-accumulating properties of C. roseus leaf idioblasts are characterized, and a methodology for the isolation of idioblast protoplasts by fluorescence-activated cell sorting is established, taking advantage of the distinctive autofluorescence of these cells. This achievement represents a crucial step for the development of differential omic strategies leading to the identification of candidate genes putatively involved in the biosynthesis, pathway regulation, and transmembrane transport leading to the anticancer alkaloids from C. roseus.
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Affiliation(s)
- Inês Carqueijeiro
- CIBIO/InBIO-Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal (S.B., T.M.-C., J.G.G., M.S.); Instituto de Investigação e Inovação em Saúde, Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal (I.C., A.L.G., P.D.);Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal (I.C., M.S.);Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal (R.G., T.L., C.A., C.B., N.P.M.);REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal (P.A., P.V.); andREQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal (I.M.V., J.A.R.)
| | - Ana Luísa Guimarães
- CIBIO/InBIO-Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal (S.B., T.M.-C., J.G.G., M.S.); Instituto de Investigação e Inovação em Saúde, Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal (I.C., A.L.G., P.D.);Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal (I.C., M.S.);Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal (R.G., T.L., C.A., C.B., N.P.M.);REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal (P.A., P.V.); andREQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal (I.M.V., J.A.R.)
| | - Sara Bettencourt
- CIBIO/InBIO-Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal (S.B., T.M.-C., J.G.G., M.S.); Instituto de Investigação e Inovação em Saúde, Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal (I.C., A.L.G., P.D.);Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal (I.C., M.S.);Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal (R.G., T.L., C.A., C.B., N.P.M.);REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal (P.A., P.V.); andREQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal (I.M.V., J.A.R.)
| | - Teresa Martínez-Cortés
- CIBIO/InBIO-Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal (S.B., T.M.-C., J.G.G., M.S.); Instituto de Investigação e Inovação em Saúde, Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal (I.C., A.L.G., P.D.);Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal (I.C., M.S.);Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal (R.G., T.L., C.A., C.B., N.P.M.);REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal (P.A., P.V.); andREQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal (I.M.V., J.A.R.)
| | - Joana G Guedes
- CIBIO/InBIO-Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal (S.B., T.M.-C., J.G.G., M.S.); Instituto de Investigação e Inovação em Saúde, Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal (I.C., A.L.G., P.D.);Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal (I.C., M.S.);Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal (R.G., T.L., C.A., C.B., N.P.M.);REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal (P.A., P.V.); andREQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal (I.M.V., J.A.R.)
| | - Rui Gardner
- CIBIO/InBIO-Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal (S.B., T.M.-C., J.G.G., M.S.); Instituto de Investigação e Inovação em Saúde, Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal (I.C., A.L.G., P.D.);Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal (I.C., M.S.);Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal (R.G., T.L., C.A., C.B., N.P.M.);REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal (P.A., P.V.); andREQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal (I.M.V., J.A.R.)
| | - Telma Lopes
- CIBIO/InBIO-Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal (S.B., T.M.-C., J.G.G., M.S.); Instituto de Investigação e Inovação em Saúde, Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal (I.C., A.L.G., P.D.);Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal (I.C., M.S.);Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal (R.G., T.L., C.A., C.B., N.P.M.);REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal (P.A., P.V.); andREQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal (I.M.V., J.A.R.)
| | - Cláudia Andrade
- CIBIO/InBIO-Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal (S.B., T.M.-C., J.G.G., M.S.); Instituto de Investigação e Inovação em Saúde, Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal (I.C., A.L.G., P.D.);Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal (I.C., M.S.);Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal (R.G., T.L., C.A., C.B., N.P.M.);REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal (P.A., P.V.); andREQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal (I.M.V., J.A.R.)
| | - Cláudia Bispo
- CIBIO/InBIO-Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal (S.B., T.M.-C., J.G.G., M.S.); Instituto de Investigação e Inovação em Saúde, Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal (I.C., A.L.G., P.D.);Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal (I.C., M.S.);Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal (R.G., T.L., C.A., C.B., N.P.M.);REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal (P.A., P.V.); andREQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal (I.M.V., J.A.R.)
| | - Nuno Pimpão Martins
- CIBIO/InBIO-Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal (S.B., T.M.-C., J.G.G., M.S.); Instituto de Investigação e Inovação em Saúde, Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal (I.C., A.L.G., P.D.);Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal (I.C., M.S.);Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal (R.G., T.L., C.A., C.B., N.P.M.);REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal (P.A., P.V.); andREQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal (I.M.V., J.A.R.)
| | - Paula Andrade
- CIBIO/InBIO-Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal (S.B., T.M.-C., J.G.G., M.S.); Instituto de Investigação e Inovação em Saúde, Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal (I.C., A.L.G., P.D.);Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal (I.C., M.S.);Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal (R.G., T.L., C.A., C.B., N.P.M.);REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal (P.A., P.V.); andREQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal (I.M.V., J.A.R.)
| | - Patrícia Valentão
- CIBIO/InBIO-Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal (S.B., T.M.-C., J.G.G., M.S.); Instituto de Investigação e Inovação em Saúde, Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal (I.C., A.L.G., P.D.);Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal (I.C., M.S.);Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal (R.G., T.L., C.A., C.B., N.P.M.);REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal (P.A., P.V.); andREQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal (I.M.V., J.A.R.)
| | - Inês M Valente
- CIBIO/InBIO-Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal (S.B., T.M.-C., J.G.G., M.S.); Instituto de Investigação e Inovação em Saúde, Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal (I.C., A.L.G., P.D.);Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal (I.C., M.S.);Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal (R.G., T.L., C.A., C.B., N.P.M.);REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal (P.A., P.V.); andREQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal (I.M.V., J.A.R.)
| | - José A Rodrigues
- CIBIO/InBIO-Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal (S.B., T.M.-C., J.G.G., M.S.); Instituto de Investigação e Inovação em Saúde, Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal (I.C., A.L.G., P.D.);Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal (I.C., M.S.);Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal (R.G., T.L., C.A., C.B., N.P.M.);REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal (P.A., P.V.); andREQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal (I.M.V., J.A.R.)
| | - Patrícia Duarte
- CIBIO/InBIO-Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal (S.B., T.M.-C., J.G.G., M.S.); Instituto de Investigação e Inovação em Saúde, Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal (I.C., A.L.G., P.D.);Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal (I.C., M.S.);Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal (R.G., T.L., C.A., C.B., N.P.M.);REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal (P.A., P.V.); andREQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal (I.M.V., J.A.R.)
| | - Mariana Sottomayor
- CIBIO/InBIO-Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal (S.B., T.M.-C., J.G.G., M.S.); Instituto de Investigação e Inovação em Saúde, Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal (I.C., A.L.G., P.D.);Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal (I.C., M.S.);Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal (R.G., T.L., C.A., C.B., N.P.M.);REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal (P.A., P.V.); andREQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal (I.M.V., J.A.R.)
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Santana VB, de Alexandre RS, Rodrigues JA, Ely C, Reis AF. Effects of Immediate Dentin Sealing and Pulpal Pressure on Resin Cement Bond Strength and Nanoleakage. Oper Dent 2016; 41:189-99. [DOI: 10.2341/15-150-l] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
Objective: The object of this study was to evaluate the simulated pulpal pressure (SPP) and immediate dentin sealing technique (IDS) effects on the microtensile bond strength (μTBS) and nanoleakage of interfaces produced by different luting agents.
Methods and Materials: Two self-adhesive luting agents (RelyX Unicem [UC] and Clearfil SA Luting [SA]) and two conventional luting agents (Rely X ARC [RX] and Panavia F [PF]) were evaluated. Eighty human molars were divided in four groups according to luting agents. Each group was subdivided according to SPP (with or without) and dentin sealing (immediate or delayed) using Clearfil SE Bond (n=5). After IDS was performed, specimens were stored in water for seven days before luting procedures. Composite blocks were luted according to the manufacturers' instructions. One half of the specimens were subjected to 15 cm H2O of hydrostatic pressure for 24 hours before cementation procedures and continued for 24 hours afterward. Then, restored teeth were sectioned into beams and tested in tension. Two additional teeth per group were prepared for nanoleakage evaluation with scanning electron microscopy. Bond strength data were statistically analyzed by three-way analysis of variance and Tukey test.
Results: μTBS of RX decreased when it was subjected to SPP without IDS. However, in the same conditions, μTBS of UC increased. The IDS prevented negative influence of SPP on μTBS of RX and PF; however, a decrease in μTBS of SA and UC was observed. Except for RX, IDS increased μTBS for all resin cements.
Conclusion: Independent of SPP, the IDS technique obtained higher μTBS for PF, SA, and UC and did not influence RX μTBS.
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Affiliation(s)
- VB Santana
- Veronica Batista Santana, DDS. MS, Department of Operative Dentistry, University of Guarulhos, Guarulhos, SP, Brazil
| | - RS de Alexandre
- Rodrigo Sversut de Alexandre, DDS, MS, PhD, Department of Restorative Dentistry, Sao Paulo State University, Araçatuba Dental School, Araçatuba, SP, Araçatuba, Brazil
| | | | - C Ely
- Caroline Ely, DDS, MS, PhD, Department of Operative Dentistry, Guarulhos University, Guarulhos, SP, Brazil
| | - AF Reis
- Andre F. Reis, Department of Operative Dentistry, Guarulhos University, Guarulhos, SP, Brazil
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Kalil B, Ribeiro AB, Leite CM, Uchôa ET, Carolino RO, Cardoso TSR, Elias LLK, Rodrigues JA, Plant TM, Poletini MO, Anselmo-Franci JA. The Increase in Signaling by Kisspeptin Neurons in the Preoptic Area and Associated Changes in Clock Gene Expression That Trigger the LH Surge in Female Rats Are Dependent on the Facilitatory Action of a Noradrenaline Input. Endocrinology 2016; 157:323-35. [PMID: 26556532 DOI: 10.1210/en.2015-1323] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
In rodents, kisspeptin neurons in the rostral periventricular area of the third ventricle (RP3V) of the preoptic area are considered to provide a major stimulatory input to the GnRH neuronal network that is responsible for triggering the preovulatory LH surge. Noradrenaline (NA) is one of the main modulators of GnRH release, and NA fibers are found in close apposition to kisspeptin neurons in the RP3V. Our objective was to interrogate the role of NA signaling in the kisspeptin control of GnRH secretion during the estradiol induced LH surge in ovariectomized rats, using prazosin, an α1-adrenergic receptor antagonist. In control rats, the estradiol-induced LH surge at 17 hours was associated with a significant increase in GnRH and kisspeptin content in the median eminence with the increase in kisspeptin preceding that of GnRH and LH. Prazosin, administered 5 and 3 hours prior to the predicted time of the LH surge truncated the LH surge and abolished the rise in GnRH and kisspeptin in the median eminence. In the preoptic area, prazosin blocked the increases in Kiss1 gene expression and kisspeptin content in association with a disruption in the expression of the clock genes, Per1 and Bmal1. Together these findings demonstrate for the first time that NA modulates kisspeptin synthesis in the RP3V through the activation of α1-adrenergic receptors prior to the initiation of the LH surge and indicate a potential role of α1-adrenergic signaling in the circadian-controlled pathway timing of the preovulatory LH surge.
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Affiliation(s)
- Bruna Kalil
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
| | - Aline B Ribeiro
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
| | - Cristiane M Leite
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
| | - Ernane T Uchôa
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
| | - Ruither O Carolino
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
| | - Thais S R Cardoso
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
| | - Lucila L K Elias
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
| | - José A Rodrigues
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
| | - Tony M Plant
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
| | - Maristela O Poletini
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
| | - Janete A Anselmo-Franci
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
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Pena CE, Rodrigues JA, Ely C, Giannini M, Reis AF. Two-year Randomized Clinical Trial of Self-etching Adhesives and Selective Enamel Etching. Oper Dent 2015; 41:249-57. [PMID: 26669504 DOI: 10.2341/15-130-c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE The aim of this randomized, controlled prospective clinical trial was to evaluate the clinical effectiveness of restoring noncarious cervical lesions with two self-etching adhesive systems applied with or without selective enamel etching. METHODS A one-step self-etching adhesive (Xeno V(+)) and a two-step self-etching system (Clearfil SE Bond) were used. The effectiveness of phosphoric acid selective etching of enamel margins was also evaluated. Fifty-six cavities were restored with each adhesive system and divided into two subgroups (n=28; etch and non-etch). All 112 cavities were restored with the nanohybrid composite Esthet.X HD. The clinical effectiveness of restorations was recorded in terms of retention, marginal integrity, marginal staining, caries recurrence, and postoperative sensitivity after 3, 6, 12, 18, and 24 months (modified United States Public Health Service). RESULTS The Friedman test detected significant differences only after 18 months for marginal staining in the groups Clearfil SE non-etch (p=0.009) and Xeno V(+) etch (p=0.004). One restoration was lost during the trial (Xeno V(+) etch; p>0.05). CONCLUSIONS Although an increase in marginal staining was recorded for groups Clearfil SE non-etch and Xeno V(+) etch, the clinical effectiveness of restorations was considered acceptable for the single-step and two-step self-etching systems with or without selective enamel etching in this 24-month clinical trial.
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Luz PB, Stringhini CH, Otto BR, Port ALF, Zaleski V, Oliveira RS, Pereira JT, Lussi A, Rodrigues JA. Performance of undergraduate dental students on ICDAS clinical caries detection after different learning strategies. Eur J Dent Educ 2015; 19:235-241. [PMID: 25495379 DOI: 10.1111/eje.12131] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/17/2014] [Indexed: 06/04/2023]
Abstract
AIM This study aimed to evaluate the effect of a digital learning tool on undergraduate dental students' performance in detecting dental caries using ICDAS. METHODS An experimental digital learning tool (DLT) was created using digital photographs of sound and carious teeth. Thirty-nine students were divided into three groups (n = 13) and each assessed 12 randomly allocated patients before and after learning strategies: G1, ICDAS e-learning program; G2, ICDAS e-learning program plus DLT; G3, no learning strategy. Students (n = 32) reassessed patients 2 weeks after training. RESULTS Comparing before and after the learning strategies, any difference in the values of specificity and area under the ROC curve for all groups was found. Sensitivity was statistically significantly higher for G1 and G2. Comparing the groups, G2 showed a significant increase in sensitivity at the D2 and D3 thresholds. Spearman's correlations with the gold standard before and after the learning strategy were 0.60 and 0.61 for G1, 0.57 and 0.63 for G2, and 0.54 and 0.54 for G3, respectively. The Wilcoxon test showed a statistically significant difference between the values obtained before and after learning strategies for G1 and G2. CONCLUSIONS Use of the DLT after the ICDAS e-learning program tended to increase the sensitivity of ICDAS used by undergraduate dental students. The DLT appeared to improve dental students' ability to use ICDAS.
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Affiliation(s)
- P B Luz
- Department of Pediatric Dentistry, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - C H Stringhini
- Department of Pediatric Dentistry, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - B R Otto
- Department of Pediatric Dentistry, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - A L F Port
- Department of Pediatric Dentistry, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - V Zaleski
- Department of Pediatric Dentistry, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - R S Oliveira
- Department of Pediatric Dentistry, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - J T Pereira
- Department of Pediatric Dentistry, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - A Lussi
- Department of Preventive, Restorative and Pediatric Dentistry, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - J A Rodrigues
- Department of Pediatric Dentistry, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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Diniz MB, Campos PH, Sanabe ME, Duarte DA, Santos MTBR, Guaré RO, Duque C, Lussi A, Rodrigues JA. Effectiveness of Fluorescence-based Methods in Monitoring Progression of Noncavitated Caries-like Lesions on Smooth Surfaces. Oper Dent 2015; 40:E230-41. [DOI: 10.2341/15-036-l] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARYAlthough there has been a significant decrease in caries prevalence in developed countries, the slower progression of dental caries requires methods capable of detecting and quantifying lesions at an early stage. The aim of this study was to evaluate the effectiveness of fluorescence-based methods (DIAGNOdent 2095 laser fluorescence device [LF], DIAGNOdent 2190 pen [LFpen], and VistaProof fluorescence camera [FC]) in monitoring the progression of noncavitated caries-like lesions on smooth surfaces. Caries-like lesions were developed in 60 blocks of bovine enamel using a bacterial model of Streptococcus mutans and Lactobacillus acidophilus. Enamel blocks were evaluated by two independent examiners at baseline (phase I), after the first cariogenic challenge (eight days) (phase II), and after the second cariogenic challenge (a further eight days) (phase III) by two independent examiners using the LF, LFpen, and FC. Blocks were submitted to surface microhardness (SMH) and cross-sectional microhardness analyses. The intraclass correlation coefficient for intra- and interexaminer reproducibility ranged from 0.49 (FC) to 0.94 (LF/LFpen). SMH values decreased and fluorescence values increased significantly among the three phases. Higher values for sensitivity, specificity, and area under the receiver operating characteristic curve were observed for FC (phase II) and LFpen (phase III). A significant correlation was found between fluorescence values and SMH in all phases and integrated loss of surface hardness (ΔKHN) in phase III. In conclusion, fluorescence-based methods were effective in monitoring noncavitated caries-like lesions on smooth surfaces, with moderate correlation with SMH, allowing differentiation between sound and demineralized enamel.
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Affiliation(s)
- MB Diniz
- Michele B Diniz, PhD, assistant professor, Pediatric Dentistry, Institute of Dentistry, Cruzeiro do Sul University–UNICSUL, São Paulo, Brazil
| | - PH Campos
- Priscila H Campos, PhD student, Pediatric Dentistry, Institute of Dentistry, Cruzeiro do Sul University–UNICSUL, São Paulo, Brazil
| | - ME Sanabe
- Mariane E Sanabe, PhD, assistant professor, Department of Pediatric Dentistry, Universidade Camilo Castelo Branco, São Paulo, Brazil
| | - DA Duarte
- Danilo A Duarte, PhD, titular professor, Pediatric Dentistry, Institute of Dentistry, Cruzeiro do Sul University–UNICSUL, São Paulo, Brazil
| | - MTBR Santos
- Maria Teresa B R Santos, PhD, titular professor, Patients with Special Needs, Institute of Dentistry, Cruzeiro do Sul University–UNICSUL, São Paulo, Brazil
| | | | - C Duque
- Cristiane Duque, PhD, assistant professor, Department of Pediatric Dentistry and Public Health, Araçatuba Dental School, Universidade Estadual Paulista, São Paulo, Brazil
| | - A Lussi
- Adrian Lussi, chair, Department of Preventive, Restorative, and Pediatric Dentistry, University of Bern, Bern, Switzerland
| | - JA Rodrigues
- Jonas A Rodrigues, PhD, adjunct professor, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
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Pizzatto LN, Werle SB, Rodrigues JA, Araujo FB, Ardenghi TM, Hugo FN, Casagrande L. Dental Avulsion: Are the Dentist Prepared to the Correct Management? Pesqui bras odontopediatria clín integr 2015. [DOI: 10.4034/pboci.2015.151.42] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Oliveira PS, Rodrigues JA, Shibli JA, Piattelli A, Iezzi G, Perrotti V. Influence of osteoporosis on the osteocyte density of human mandibular bone samples: a controlled histological human study. Clin Oral Implants Res 2014; 27:325-8. [DOI: 10.1111/clr.12538] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/21/2014] [Indexed: 01/11/2023]
Affiliation(s)
- Pablo S. Oliveira
- Department of Periodontology and Oral Implantology; Dental Research Division; Guarulhos University; Guarulhos Brazil
| | - José A. Rodrigues
- Department of Periodontology and Oral Implantology; Dental Research Division; Guarulhos University; Guarulhos Brazil
| | - Jamil A. Shibli
- Department of Periodontology and Oral Implantology; Dental Research Division; Guarulhos University; Guarulhos Brazil
| | - Adriano Piattelli
- Department of Medical, Oral and Biotechnological Sciences; University of Chieti-Pescara; Chieti Italy
| | - Giovanna Iezzi
- Department of Medical, Oral and Biotechnological Sciences; University of Chieti-Pescara; Chieti Italy
| | - Vittoria Perrotti
- Department of Medical, Oral and Biotechnological Sciences; University of Chieti-Pescara; Chieti Italy
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Gonçalves LM, Moreira MM, Azevedo CF, Valente IM, Sousa JC, Scanlan TS, Compton RG, Rodrigues JA. Proof of Concept of the Electrochemical Sensing of 3-Iodothyronamine (T1AM) and Thyronamine (T0AM). ChemElectroChem 2014. [DOI: 10.1002/celc.201402165] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Moriyama CM, Rodrigues JA, Lussi A, Diniz MB. Effectiveness of fluorescence-based methods to detect in situ demineralization and remineralization on smooth surfaces. Caries Res 2014; 48:507-14. [PMID: 24902775 DOI: 10.1159/000363074] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 04/19/2014] [Indexed: 11/19/2022] Open
Abstract
This study aimed to evaluate the effectiveness of fluorescence-based methods (DIAGNOdent, LF; DIAGNOdent pen, LFpen, and VistaProof fluorescence camera, FC) in detecting demineralization and remineralization on smooth surfaces in situ. Ten volunteers wore acrylic palatal appliances, each containing 6 enamel blocks that were demineralized for 14 days by exposure to a 20% sucrose solution and 3 of them were remineralized for 7 days with fluoride dentifrice. Sixty enamel blocks were evaluated at baseline, after demineralization and 30 blocks after remineralization by two examiners using LF, LFpen and FC. They were submitted to surface microhardness (SMH) and cross-sectional microhardness analysis. The integrated loss of surface hardness (ΔKHN) was calculated. The intraclass correlation coefficient for interexaminer reproducibility ranged from 0.21 (FC) to 0.86 (LFpen). SMH, LF and LFpen values presented significant differences among the three phases. However, FC fluorescence values showed no significant differences between the demineralization and remineralization phases. Fluorescence values for baseline, demineralized and remineralized enamel were, respectively, 5.4 ± 1.0, 9.2 ± 2.2 and 7.0 ± 1.5 for LF; 10.5 ± 2.0, 15.0 ± 3.2 and 12.5 ± 2.9 for LFpen, and 1.0 ± 0.0, 1.0 ± 0.1 and 1.0 ± 0.1 for FC. SMH and ΔKHN showed significant differences between demineralization and remineralization phases. There was a negative and significant correlation between SMH and LF and LFpen in the remineralization phase. In conclusion, LF and LFpen devices were effective in detecting demineralization and remineralization on smooth surfaces provoked in situ.
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Affiliation(s)
- C M Moriyama
- Department of Pediatric Dentistry, School of Dentistry, Cruzeiro do Sul University, UNICSUL, São Paulo, Brazil
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Arrais CAG, Chagas CL, Munhoz A, Oliveira M, Reis AF, Rodrigues JA. Effect of Simulated Tooth Temperature on the Degree of Conversion of Self-adhesive Resin Cements Exposed to Different Curing Conditions. Oper Dent 2014; 39:204-12. [DOI: 10.2341/13-091-l] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
Objectives
This study evaluated the degree of conversion (DC) of two commercial, self-adhesive resin cements (SARCs) using Fourier transform infrared analysis (FTIR) polymerized at simulated prepared tooth surface temperatures and under different curing conditions.
Materials and Methods
RelyX U100 (U100, 3M ESPE) and Maxcem Elite (MX, Kerr Corporation) were mixed at 25°C and applied to the surface of a horizontal attenuated total reflectance (ATR) unit, which was near room temperature (RT, control) (25°C) or heated to simulate prepared tooth surface temperatures (28°C and 32°C) and then attached to an infrared spectrometer. The products were polymerized using one of three conditions: direct light exposure through a glass slide (DLE), exposure through a 1.5-mm thick ceramic disc overlay (CO) (A2 shade, IPS e.max, Ivoclar Vivadent), or self-curing (SC). FTIR spectra were recorded for 12 minutes (1 spectrum/s, 16 scans/spectrum, resolution 4 cm−1) immediately after application to the ATR. The DC was calculated using standard techniques of observing changes in aliphatic-to-aromatic peak ratios before and 12 minutes after curing, as well as during each 1-second interval. DC data (n=7) were analyzed by two-way analysis of variance and Tukey's post-hoc test (p=0.05).
Results
Both simulated tooth temperatures significantly increased DC in all groups of MX and in the CO and SC groups of U100 compared with the RT control. For MX, the self-cure groups exposed to tooth temperatures showed DC values similar to those of the CO groups. For U100, the CO groups showed higher DC values than SC groups regardless of temperature. Time-based conversion profiles ranged according to product, temperature, and curing mode.
Conclusions
Causing SARCs to polymerize at simulated tooth temperatures increases DC of SARCs compared with room-temperature curing values, mainly in the SC mode.
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Affiliation(s)
- CAG Arrais
- Cesar AG Arrais, DDS, MS, PhD, Ponta Grossa State University, Department of Operative Dentistry, Ponta Grossa, Brazil
| | - CL Chagas
- Carolina Levatti Chagas, DDS, MS, University of Guarulhos, Department of Operative Dentistry, Guarulhos, Brazil
| | - A Munhoz
- Aurea Munhoz, BMSc, University of Guarulhos, Department of Operative Dentistry, Guarulhos, Brazil
| | - M Oliveira
- Michele Oliveira, MS, DDS, University of Guarulhos, Department of Operative Dentistry, Guarulhos, Brazil
| | - AF Reis
- Andre F Reis, DDS, MS, PhD, University of Guarulhos, Department of Operative Dentistry, Guarulhos, Brazil
| | - JA Rodrigues
- José Augusto Rodrigues, DDS, MS, PhD, University of Guarulhos, Department of Restorative Dentistry, Guarulhos, Brazil
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de Alexandre RS, Santana VB, Kasaz AC, Arrais CAG, Rodrigues JA, Reis AF. Effect of long-term simulated pulpal pressure on the bond strength and nanoleakage of resin-luting agents with different bonding strategies. Oper Dent 2014; 39:508-20. [PMID: 24502755 DOI: 10.2341/13-078] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This study evaluated the effects of simulated hydrostatic pulpal pressure (SPP) on the microtensile bond strength (μTBS) to dentin and nanoleakage patterns produced by self-adhesive luting agents after 12 months. Three self-adhesive luting agents (RelyX Unicem [UN], RelyX U100 [UC], and Clearfil SA Luting [SA]) and three conventional luting agents (Rely X ARC [RX], Panavia F [PF], and a two-step self-etching adhesive system [Clearfil SE Bond] associated with Panavia F [PS]) were evaluated. One hundred twenty-three human molars were abraded to expose occlusal surfaces. Resin cements were used to lute cylindrical composite blocks to the teeth either subjected or not to SPP. Sixty specimens were subjected to 15 cm H2O of SPP for 24 hours before and 24 hours or 12 months after cementation procedures. Afterward, restored teeth were serially sectioned into beams with a cross-sectional area of 1 mm(2) at the bonded interface and were tested in tension (cross-head speed of 1 mm/min). Failure mode was determined using scanning electron microscopy (SEM). Data were statistically analyzed by three-way analysis of variance and post hoc Tukey test (p=0.05). Two additional teeth in each group were serially sectioned into 0.9-mm-thick slabs, which were submitted to a nanoleakage protocol with AgNO3 and analyzed with scanning and transmission electron microscopes. The μTBS values of the etch-and-rinse group (RX) were negatively influenced by SPP and long-term water storage with SPP. After 12 months, UC and SA presented premature failures in all specimens when submitted to SPP. SPP increased silver deposition in most groups in both evaluation times. The hydrostatic pulpal pressure effect was material dependent. The storage time without SPP did not affect bond strength. However, long-term SPP influenced the performance of the etch-and-rinse and self-adhesive cements regarding μTBS and nanoleakage pattern, except to UN.
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Ferrari DS, Piattelli A, Iezzi G, Faveri M, Rodrigues JA, Shibli JA. Effect of lateral static load on immediately restored implants: histologic and radiographic evaluation in dogs. Clin Oral Implants Res 2014; 26:e51-e56. [PMID: 24438383 DOI: 10.1111/clr.12331] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/05/2013] [Indexed: 11/27/2022]
Abstract
OBJECTIVES The aim of this study was to evaluate the effect of lateral static load in immediately restored implants in the canine mandible. MATERIAL AND METHODS In 7 mongrel dogs, all premolars and the first molars were extracted bilaterally in the mandible. Two months after the extractions, 6 implants with sandblasted acid-etched surfaces were placed in each animal, 3 on each side. Randomly, two implants per side were immediately restored with an orthodontic expansion device that promoted lateral excessive static load (test group) or load (control) while the third implant of each side, remained submerged (unloaded group). These loaded devices were cleaned daily with chlorhexidine 0.12%, during the 4 months of study, when the animals were sacrificed and biopsies removed for histometric study. Intra-oral periapicals were made using positioners at the beginning and at the end of the study. RESULTS Five implants from test group were lost in 3 dogs. Radiographically, there was a marginal bone loss of 3.68 ± 0.74 mm for the test group, 1.63 ± 0.2 mm for the control group and 0.45 ± 0.5 mm for the unloaded group. Histometrically, the percentage of bone-to-implant contact (BIC%) was 35.52 ± 7.32%, for the test group, 63.16 ± 5.16% for the control group and 42.33 ± 2.14% for the unloaded group. CONCLUSION In conclusion, the excessive lateral static load negatively affected the behavior of peri-implant bone around immediate restored implants.
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Affiliation(s)
- Daniel S Ferrari
- Department of Periodontology and Oral Implantology, Dental Research Division, University of Guarulhos, Guarulhos, Brazil
| | - Adriano Piattelli
- Department of Oral Medicine and Pathology, University of Chieti-Pescara, Chieti, Italy
| | - Giovanna Iezzi
- Department of Oral Medicine and Pathology, University of Chieti-Pescara, Chieti, Italy
| | - Marcelo Faveri
- Department of Periodontology and Oral Implantology, Dental Research Division, University of Guarulhos, Guarulhos, Brazil
| | - José A Rodrigues
- Department of Periodontology and Oral Implantology, Dental Research Division, University of Guarulhos, Guarulhos, Brazil
| | - Jamil A Shibli
- Department of Periodontology and Oral Implantology, Dental Research Division, University of Guarulhos, Guarulhos, Brazil
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Santos CM, Gomes B, Gonçalves LM, Oliveira J, Rocha S, Coelho M, Rodrigues JA, Freitas V, Aguilar H. Pyranoflavylium Derivatives Extracted from Wine Grape as Photosensitizers in Solar Cells. J BRAZIL CHEM SOC 2014. [DOI: 10.5935/0103-5053.20140075] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Costa R, Negrão R, Valente I, Castela Â, Duarte D, Guardão L, Magalhães PJ, Rodrigues JA, Guimarães JT, Gomes P, Soares R. Xanthohumol modulates inflammation, oxidative stress, and angiogenesis in type 1 diabetic rat skin wound healing. J Nat Prod 2013; 76:2047-2053. [PMID: 24200239 DOI: 10.1021/np4002898] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Type 1 diabetes mellitus is responsible for metabolic dysfunction, accompanied by chronic inflammation, oxidative stress, and endothelium dysfunction, and is often associated with impaired wound healing. Phenol-rich food improves vascular function, contributing to diabetes prevention. This study has evaluated the effect of phenol-rich beverage consumption in diabetic rats on wound healing, through angiogenesis, inflammation, and oxidative stress modulation. A wound-healing assay was performed in streptozotocin-induced diabetic Wistar rats drinking water, 5% ethanol, and stout beer with and without 10 mg/L xanthohumol (1), for a five-week period. Wounded skin microvessel density was reduced to normal values upon consumption of 1 in diabetic rats, being accompanied by decreased serum VEGF-A and inflammatory markers (IL-1β, NO, N-acetylglucosaminidase). Systemic glutathione and kidney and liver H2O2, 3-nitrotyrosine, and protein carbonylation also decreased to healthy levels after treatment with 1, implying an improvement in oxidative stress status. These findings suggest that consumption of xanthohumol (1) by diabetic animals consistently decreases inflammation and oxidative stress, allowing neovascularization control and improving diabetic wound healing.
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Affiliation(s)
- Raquel Costa
- Department of Biochemistry (U38-FCT), Faculty of Medicine, University of Porto , 4200-319 Porto, Portugal
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Chambrone L, Preshaw PM, Ferreira JD, Rodrigues JA, Cassoni A, Shibli JA. Effects of tobacco smoking on the survival rate of dental implants placed in areas of maxillary sinus floor augmentation: a systematic review. Clin Oral Implants Res 2013; 25:408-16. [PMID: 23651315 DOI: 10.1111/clr.12186] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/08/2013] [Indexed: 11/28/2022]
Abstract
OBJECTIVES The objective of this systematic review was to evaluate the effects of smoking on the survival rate of dental implants placed in areas of maxillary sinus floor augmentation. MATERIAL AND METHODS The Cochrane Oral Health Group's Trials Register (CENTRAL), MEDLINE and EMBASE were searched in duplicate up to, and including, October 2012 without language restrictions. Studies were considered eligible for inclusion if they involved the treatment of smokers and non-smokers with titanium implants and sinus floor elevation procedures. The Newcastle-Ottawa Scale and the Cochrane Collaboration's quality assessment tool were used for the assessment of the risk of bias in included studies. Random effects meta-analyses were used to assess the number of implants lost in smokers vs. number of implants lost in non-smokers. RESULTS Of 3360 potentially eligible papers, eight studies were included. More than half (62.5%) of the studies found that smoking adversely affects implant survival in sites of sinus floor augmentation. Similarly, the pooled analysis indicated a statistically significantly increased risk of implant failure in smokers when the outcomes of all studies available to be included into meta-analysis were evaluated [RR: 1.87 (95% CI: 1.35, 2.58), P = 0.0001]. Conversely, a subgroup analysis including only prospective studies (3 studies) did not reveal significant differences in implant failure between smokers and non-smokers [RR: 1.55 (95% CI: 0.91, 2.65), P = 0.11]. CONCLUSIONS Although smoking was associated with implant failure in most of individual studies and in the overall meta-analysis, the detrimental effect of smoking was not confirmed when only prospective data were assessed.
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Affiliation(s)
- Leandro Chambrone
- Department of Periodontology and Oral Implantology, Dental Research Division, Guarulhos University, Guarulhos, SP, Brazil; Division of Periodontics, Department of Stomatology, School of Dentistry, University of São Paulo, São Paulo, SP, Brazil
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Oliveira TI, Oliveira M, Viswanathan S, Fátima Barroso M, Barreiros L, Nunes OC, Rodrigues JA, de Lima-Neto P, Mazzetto SE, Morais S, Delerue-Matos C. Molinate quantification in environmental water by a glutathione-S-transferase based biosensor. Talanta 2013; 106:249-54. [DOI: 10.1016/j.talanta.2012.10.074] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Revised: 10/19/2012] [Accepted: 10/24/2012] [Indexed: 12/01/2022]
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Valente IM, Santos CM, Moreira MM, Rodrigues JA. New application of the QuEChERS methodology for the determination of volatile phenols in beverages by liquid chromatography. J Chromatogr A 2013; 1271:27-32. [DOI: 10.1016/j.chroma.2012.11.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Revised: 11/11/2012] [Accepted: 11/12/2012] [Indexed: 10/27/2022]
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Santos CM, Valente IM, Gonçalves LM, Rodrigues JA. Chromatographic analysis of methylglyoxal and other α-dicarbonyls using gas-diffusion microextraction. Analyst 2013; 138:7233-7. [DOI: 10.1039/c3an00766a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Shibli JA, Mangano C, Mangano F, Rodrigues JA, Cassoni A, Bechara K, Ferreia JDB, Dottore AM, Iezzi G, Piattelli A. Bone-to-implant contact around immediately loaded direct laser metal-forming transitional implants in human posterior maxilla. J Periodontol 2012; 84:732-7. [PMID: 23003913 DOI: 10.1902/jop.2012.120126] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE Direct laser metal forming (DLMF) is a procedure in which a high-power laser beam is directed onto a metal powder bed and programmed to fuse particles according to a computer-aided design file, generating a thin metal layer. This histologic study evaluated the bone-to-implant contact (BIC%) around immediately loaded DLMF transitional implants retrieved after 2 months from posterior human maxillae. METHODS Twelve totally edentulous individuals (mean age, 66.14 ± 2.11 years) received DLMF transitional implants divided in twelve immediately loaded (IL) and twelve unloaded (UI) implants. These transitional implants were placed between conventional implants to support the interim complete maxillary denture during the healing period. After 8 weeks, the transitional implants and the surrounding tissue were removed and prepared for histomorphometric analysis. RESULTS Mature woven preexisting bone lined by newly formed bone in early stages of maturation were found around all retrieved implants. Histometric evaluation indicated that the mean BIC% was 45.20 ± 7.68% and 34.10 ± 7.85% for IL and UI, respectively (P <0.05). CONCLUSION The present data obtained in humans showed that, although both IL and UI presented good BIC%, IL DLMF implants had a higher BIC% in the posterior maxilla.
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Affiliation(s)
- Jamil A Shibli
- Department of Oral Implantology, Dental Research Division, Guarulhos University, Guarulhos, São Paulo, Brazil.
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