Browsing by Author "Brito, J."
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- Analysis of elemental impurities by WDXRF in pharmaceuticals and dietary supplementsPublication . Figueiredo, A.; Costa, I. M.; Brito, J.
- Analysis of elemental impurities in dietary supplements for weight loss and assessment of potential risk to human healthPublication . Figueiredo, A.; Costa, I. M.; Fernandes, T.; Gonçalves, L. L.; Brito, J.
- Chiral Mo and W Complexes bearing Oxazoline-Cyclopentadienyl LigandsPublication . Reis, P.; Gamelas ou Carla A. Gamelas, Carla; Brito, J.; Goméz, M.; Royo, B.
- Community-based HIV testing in a gay social venue in LisbonPublication . Fuertes, R.; Brito, J.; Campos, M.J.; Esteves, J.; Coelho, I.
- Dentinal hypersensitivity: the role of salivary calcium in diagnosisPublication . Manso, A. G.; Carmo, J.; Nascimento, A. P.; Bernardo, M. A.; Brito, J.; Mesquita, M. F.
- Effect of a tomato juice intake on resting heart rate, resting blood pressure and perception level of recovery in elite swimmersPublication . Marques, F. B.; Godinho, C.; Bernardo, A.; Brito, J.
- Effect of cinnamon powder addition to a Portuguese custard tart (Pastel de Nata) on healthy adults’ postprandial glycemiaPublication . Moncada, M. M.; Bernardo, M. A.; Silva, M. L.; Jorge, A.; Pereira, P.; Brito, J.; Singh, J.; Mesquita, M. F.Background and Objective: Cinnamon is a spice used over the years in cooking to impart aromatic, flavor and taste properties to food and beverages. Moreover, cinnamon has been used for its medicinal properties due to its potential phenolic content, which can protect against cardio-metabolic diseases. Previous studies reported an improvement of postprandial glycemia after addition of cinnamon powder to a high-sugar meal. The study aims at investigating the effect of adding cinnamon powder to a Portuguese custard tart (Pastel de Nata) on the postprandial glycemic response in healthy subjects. Subjects and Methods: After review board and Ethic Committee of the State approval, thirty-two healthy human subjects were assigned in a controlled study and randomly allocated into 2 groups: 16 subjects ingested a custard tart with cinnamon powder (cinnamon group) and 16 subjects ingested a custard tart alone (control group). Blood glucose concentrations were measured before interventions and after 30, 60, 90 and 120 minutes. Chemical analysis was performed to quantify the total phenolic content and antioxidant activity. Results: The postprandial blood glucose (PBG) area under the curve (AUC) was significantly lower (p = 0.0005) in the cinnamon group (599.2 ± 9.1) compared to the AUC of the control group (645.7 ± 7.7). The administration of cinnamon powder to the custard tarts slightly decreased PBG mean values compared to custard tart without cinnamon powder, although it did not reach statistical significance (p = 0.273). Cinnamon addition to custard tart improved the total phenolic content (1278.7 ± 0.7 compared to 253.7 ± 22.8 mg/L gallic acid) and antioxidant properties, increasing 4.4 times the capacity of free-radical scavenger compared with custard tart without cinnamon (IC50). Conclusion: The addition of cinnamon powder to custard tart could be beneficial to glycemic control.
- Estudo das propriedades mecânicas do material de restauração de Ormocer® – Admira Fusion®Publication . Marques, A. F.; Polido, M.; Brito, J.; Azul, A. C.
- Food supplements for weight loss: monitoring of metallic and non-metallic impuritiesPublication . Figueiredo, A.; Costa, I. M.; Brito, J.
- Industrial noise and tooth wear – Experimental studyPublication . Cavacas, M. A.; Tavares, V.; Borrecho, G.; Oliveira, M. J.; Oliveira, P.; Brito, J.; Águas, A.; Martins dos Santos, J."Tooth wear is a complex multifactorial process that involves the loss of hard dental tissue. Parafunctional habits have been mentioned as a self-destructive process caused by stress, which results in hyperactivity of masticatory muscles. Stress manifests itself through teeth grinding, leading to progressive teeth wear. The effects of continuous exposure to industrial noise, a “stressor” agent, cannot be ignored and its effects on the teeth must be evaluated. Aims: The aim of this study was to ascertain the effects of industrial noise on dental wear over time, by identifying and quantifying crown area loss. Material and Methods: 39 Wistar rats were used. Thirty rats were divided in 3 experimental groups of 10 animals each. Animals were exposed to industrial noise, rich in LFN components, for 1, 4 and 7 months, with an average weekly exposure of 40 hours (8h/day, 5 days/week with the weekends in silence). The remaining 9 animals were kept in silence. The areas of the three main cusps of the molars were measured under light microscopy. Statistical analysis used: A two-way ANOVA model was applied at significance level of 5%. Results: The average area of the molar cusps was significantly different between exposed and non-exposed animals. The most remarkable differences occurred between month 1 and 4. The total crown loss from month 1 to month 7 was 17.3% in the control group, and 46.5% in the exposed group, and the differences between these variations were significant (p<0.001). Conclusions: Our data suggest that industrial noise is an important factor in the pathogenesis of tooth wear."