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Recent works have shown a dual side of estrogens, and research on the relationship between oxidative stress and menopausal status remains unclear and has produced controversial results. In this work, we aimed to evaluate by sensitive methods the oxidant and antioxidant changes that develop after natural menopause. Thirty premenopausal and 28 naturally(More)
OBJECTIVES To determine whether disease activity verified by laboratorial parameters is associated with a higher frequency of hypertension in patients with systemic lupus erythematosus (SLE) without renal impairment and to investigate factors that could influence this hypertension. METHOD This study included 102 controls, 70 patients with inactive SLE,(More)
OBJECTIVE The aim of the present study was to assess oxidative stress and iron metabolism in systemic lupus erythematosus (SLE) patients with and without insulin resistance (IR). METHOD This study included 236 subjects (125 controls and 111 SLE patients). Patients with SLE were divided in two groups: with (n = 72) or without (n = 39) IR. RESULTS SLE(More)
Distribution, dynamics and mass budget of phosphorus and nitrogen in a red mangrove forest were studied in the Potengi mangrove forest in northern Brazil (lat. 5 degrees 42' and 5 degrees 53'S, long. 35 degrees 5' and 35 degrees 25'W). Tidal hydrology, net primary productivity, leaf litter decomposition rate and standing stock of leaf litter in a red(More)
OBJECTIVE To estimate the prevalence of child safety restraint use and factors associated. METHODS Observational cross-sectional study using a stratified sampling conducted in the city of Maringá, Southern Brazil, between March and May 2007. Each day care center was visited at one day only. The outcome was use of child safety restraints by children under(More)
PURPOSE To evaluate the biomechanical fixation, bone-to-implant contact (BIC), and bone morphology of screw-type root-form implants with healing chambers with as-machined or dual acid-etched (DAE) surfaces in a canine model. MATERIALS AND METHODS The animal model included the placement of machined (n = 24) and DAE (n = 24) implants along the proximal(More)
This study evaluated buccal bone maintenance after implantation with a surgical flap approach immediately following tooth extraction in a dog model. Mandibular premolars of six dogs were extracted, and threaded implants of 4-mm diameter and 8-mm length with as-machined and dual acid-etched surfaces were placed through balanced procedures in the distal root(More)
CONTEXT The prediction of implant treatment is directly influenced by the quality of the remaining bone after tooth extraction. AIMS The purpose of this experimental study was to, histologically and histometrically, evaluate the bone repair process in the central areas of extraction sockets filled with platelet-rich plasma. MATERIALS AND METHODS Four(More)
Dizziness is a frequent complaint during the initial worsening of panic patients treated with clomipramine. In order to investigate the relationship between dizziness and initial worsening mechanisms, otoneurological tests were administered to 32 consecutive patients with panic disorder, with or without agoraphobia, before treatment, 36 h after the first(More)
The genus Gracilaria is one of the most important sources of agar in the world. In Brazil, Gracilaria birdiae is the main commercially exploited species; however, overexploitation has contributed to the depletion of natural beds. In order to obtain more information so as to consolidate G. birdiae cultivation, studies under laboratory (indoor and outdoor)(More)