RESUMO
BACKGROUND: Phase angle (PhA), proposed as an indicator of the number, integrity, and function of cells and evaluated in some clinical situations, decreases after bariatric surgery (BS). In contrast, higher values are found in physically active or exercising individuals. We therefore evaluated the influence of physical activity on PhA after BS. METHODS: The PhA and body composition (obtained by bioelectrical impedance analysis), physical activity level (obtained by International Physical Activity Questionnaire), and metabolic equivalents (METs) were evaluated in adult women submitted to BS. The PhA and body composition were evaluated at three time points: before and 6 and 12 months after surgery. Physical activity level and METs were measured at the two postoperative time points. RESULTS: A reduction in PhA was observed 6 (p < 0.01) and 12 months (p < 0.01) after BS, with no significant difference between time points. A moderate or high physical activity level was found in 81% of the volunteers after 6 months and in 65% after 12 months. METs were reduced after 12 months compared to 6 months. A positive correlation (p < 0.05) was observed between PhA and body cell mass after surgery. There was a significant positive correlation (p < 0.01) between PhA and METs after 12 months. CONCLUSIONS: Physical activity may attenuate the PhA reduction that occurs after BS, with this parameter reflecting the engagement of these patients in this type of activity.
Assuntos
Cirurgia Bariátrica , Obesidade Mórbida , Adulto , Composição Corporal , Impedância Elétrica , Feminino , Humanos , Equivalente Metabólico , Obesidade Mórbida/cirurgiaRESUMO
BACKGROUND: Bariatric surgery improves oxidative damage, but little is known about the differences between Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG). This study compared changes in lipid and protein oxidative damage markers and their correlations with body parameters of patients before and after RYGB or SG. METHODS: Body mass index (BMI), bioimpedance parameters, and biochemical parameters including lipid and protein oxidative damage markers were evaluated before and 6 months after surgery. Data were analyzed by t test or Mann-Whitney rank sum test and Spearman's correlation coefficient between oxidative damage and other parameters. RESULTS: Twenty-five patients were submitted to RYGB and 14 to SG. There was a significant decrease of BMI, fat mass, fat-free mass, phase angle, serum total protein, transthyretin, and C-reactive protein in both groups (p < 0.05). Serum thiobarbituric acid reactive substances (TBARS), advanced oxidation protein products (AOPP), and serum lipids (p < 0.05) were significantly decreased in the RYGB group. TBARS levels were significantly correlated with serum total cholesterol (r = 0.468), LDL (r = 0.439), BMI (r = 0.424), and fat mass (r = 0.40) (p < 0.05). In the SG group, AOPP levels were significantly correlated with serum C-reactive protein (baseline: r = 0.53, 6 months: r = 0.64) (p < 0.05). Alterations in these levels were negatively correlated with changes in BIA parameters [resistance (r = -0.574), reactance (r = -0.736), and phase angle (r = 0.549)] (p < 0.05). CONCLUSIONS: RYGB seems to be better in attenuating oxidative damage after 6 months. The BMI reduction in the RYGB group suggests a concomitant decrease of lipid oxidative damage. In the SG group, changes in BIA parameters were inversely correlated with protein oxidative damage.
Assuntos
Derivação Gástrica , Obesidade Mórbida , Gastrectomia , Humanos , Obesidade Mórbida/cirurgia , Estresse Oxidativo , Redução de PesoRESUMO
Este artigo teve por objetivo apresentar um caso clínico cuja prótese provisória utilizou um componente protético multifuncional de PEEK. Este é um polímero biocompatível personalizável e de boa aderência às resinas. O caso descrito é um implante imediato com carga imediata na região do 21. Foi realizado um approach palatino do implante, preenchimento do gap vestibular com um enxerto aloplástico (Nanosynt), um provisório imediato utilizando um componente provisório multifuncional de PEEK e um dente de estoque. O caso foi acompanhado até a fase de confecção da prótese defi nitiva, na qual foi verifi cada a arquitetura dos tecidos peri-implantares quanto à saúde e manutenção. Na Implantodontia contemporânea, o PEEK é a opção biológico-funcional com melhor custo-benefício nos casos de implantes colocados e carregados imediatamente.
The aim of this article was to present a clinical case where the provisional restoration was fabricated over a multifunctional PEEK healing abutment. This biocompatible polymer can be customized and has excellent bond strength to resin composites. A dental implant was loaded at the region of tooth 21. After a palatal approach for implant placement, the buccal gap was fi lled with an alloplastic graft (Nanosynt). Then, the immediate restoration was fabricated with the multifunctional PEEK and an acrylic tooth form. At the delivery of the defi nitive restoration, the peri-implant soft tissue health and architecture were preserved. In the contemporary implant dentistry, PEEK abutments provide the best biological and functional option with a signifi cant cost-benefi t ratio for cases of immediate implant loading