Magnesium, insulin resistance and body composition in healthy postmenopausal women

Objective: This study was conducted to determine the association between magnesium (Mg), body composition and insulin resistance in 136 sedentary postmenopausal women, 50 to 77 years of age. Methods: Diabetics, hypertensives and women on hormonal replacement therapy were excluded and the remaining 74 were divided according to BMI≥25 (obese: OG) and BMI<25 kg/m2 (non-obese: NOG). Nutritional data disclosed that intakes were high for protein and saturated fat, low for carbohydrates, polyunsaturated fat and Mg and normal for the other nutrients, according to recommended dietary allowances (RDA). Mg values in red blood cells (RBC-Mg) and plasma (P-Mg), were determined, as were fasting glucose, and insulin levels, Homeostasis Model Assessment (HOMA), body mass index (BMI), body fat percent (BF %), abdominal fat (AF) and free fat mass (FFM). Results: RBC-Mg values were low in both groups when compared with normal values. There were significant differences in body composition parameters, HOMA and insulin levels, with higher basal insulin levels in OG. RBC-Mg was directly correlated with insulin, HOMA and FFM in both groups, according to Pearson correlations. HOMA in OG was also directly correlated with BMI, FFM and AF. In NOG, HOMA was only correlated with FFM. The low RBC-Mg levels observed were probably due to low Mg intake and to deregulation of factors that control Mg homeostasis during menopause. Conclusions: Both Mg deficit and obesity may independently lead to a higher risk for insulin resistance and cardiovascular disease.

Cross-cultural validity of the demand-control questionnaire: Swedish and Brazilian workers

OBJECTIVE To evaluate the cross-cultural validity of the Demand-Control Questionnaire, comparing the original Swedish questionnaire with the Brazilian version. METHODS We compared data from 362 Swedish and 399 Brazilian health workers. Confirmatory and exploratory factor analyses were performed to test structural validity, using the robust weighted least squares mean and variance-adjusted (WLSMV) estimator. Construct validity, using hypotheses testing, was evaluated through the inspection of the mean score distribution of the scale dimensions according to sociodemographic and social support at work variables. RESULTS The confirmatory and exploratory factor analyses supported the instrument in three dimensions (for Swedish and Brazilians): psychological demands, skill discretion and decision authority. The best-fit model was achieved by including an error correlation between work fast and work intensely (psychological demands) and removing the item repetitive work (skill discretion). Hypotheses testing showed that workers with university degree had higher scores on skill discretion and decision authority and those with high levels of Social Support at Work had lower scores on psychological demands and higher scores on decision authority. CONCLUSIONS The results supported the equivalent dimensional structures across the two culturally different work contexts. Skill discretion and decision authority formed two distinct dimensions and the item repetitive work should be removed.

Nonlinear dynamics of the patient’s response to drug effect during general anesthesia

In today’s healthcare paradigm, optimal sedation during anesthesia plays an important role both in patient welfare and in the socio-economic context. For the closed-loop control of general anesthesia, two drugs have proven to have stable, rapid onset times: propofol and remifentanil. These drugs are related to their effect in the bispectral index, a measure of EEG signal. In this paper wavelet time–frequency analysis is used to extract useful information from the clinical signals, since they are time-varying and mark important changes in patient’s response to drug dose. Model based predictive control algorithms are employed to regulate the depth of sedation by manipulating these two drugs. The results of identification from real data and the simulation of the closed loop control performance suggest that the proposed approach can bring an improvement of 9% in overall robustness and may be suitable for clinical practice.

Nonlinear dynamics of the patient’s response to drug effect during general anesthesia

In today’s healthcare paradigm, optimal sedation during anesthesia plays an important role both in patient welfare and in the socio-economic context. For the closed-loop control of general anesthesia, two drugs have proven to have stable, rapid onset times: propofol and remifentanil. These drugs are related to their effect in the bispectral index, a measure of EEG signal. In this paper wavelet time–frequency analysis is used to extract useful information from the clinical signals, since they are time-varying and mark important changes in patient’s response to drug dose. Model based predictive control algorithms are employed to regulate the depth of sedation by manipulating these two drugs. The results of identification from real data and the simulation of the closed loop control performance suggest that the proposed approach can bring an improvement of 9% in overall robustness and may be suitable for clinical practice.

Estudo retrospectivo terapêutico da neurocriptococose em 112 aidéticos ou não

Cento e doze aidéticos ou não com neurocriptococose, admitidos no Hospital Emílio Ribas - São Paulo, Brasil, receberam anfotericina B (AMB) - grupo III ou a associação AMB/ 5 fluorcitosina (5FC): grupos I e II. Testes de Goodman aplicados revelaram: 1. leuco e glicorraquia semelhantes nos três grupos eproteinorraquia inferior a 85mg/dlapós 1, 5g/AMB; 1. a coloração pelo método da tinta da China e a cultura para Cryptococcus neoformans, positivas até l,Og/AMB; 3. hipocalemia na monoterapia, hipo e hipercalemia durante a associação; 4. as reações adversas mais evidentes a > 0,7gAMB/250g 5FC; 5. óbitos (precoce e tardio) frequentes no grupo 1 e nos grupos I e III entre 2,5 a 4,0g de AMB; 6. remissão e morte semelhantes nos grupos. A associação terapêutica iniciale amanutençãopelo AMB conduziram à recaída tardia

Degradação fotocatalítica de petróleo e seus derivados através da utilização de nanopartículas de dióxido de titânio puro e misturado com óxido de grafeno reduzido

Dissertação de mestrado integrado em Engenharia de Materiais

Mechanical versus biological aortic valve implants in the elderly. A comparison of early and mid-term results

OBJECTIVE: Our aim was to compare, in a non randomized study, the surgical outcome in elderly patients with mechanical (Group 1; n=83) and bioprosthetic valve implants (Group 2; n=136). METHODS: During a three year period, 219 patients >75 years underwent Aortic Valve Replacement. The groups matched according to age, sex, comorbidity, valve pathology and concomitant Coronary Artery Bypass Surgery. Follow-up was a total of 469 patient-years (mean follow-up 2.1 years, maximum 4,4 years). RESULTS: Operative mortality was zero and the overall early mortality was 2.3 % (within 30 days). Actuarial survival was 87.5 ± 4.0% and 66.1 ± 7.7% (NS) at 4 years in Group 1 and Group 2, respectively. Freedom from valve-related death was 88.9 ± 3.8% in Group 1 and 69.9±7.9% (NS) in Group 2 at 4 years. CONCLUSION: Aortic Valve Replacement in the elderly (>75 years) is a safe procedure even in cases where concomitant coronary artery revascularization is performed. Only a few anticoagulant-related complications were reported and this may indicate that selected groups of elderly patients with significant life expectancy may benefit from mechanical implants .

Nova genera plantarum...

pt.1-2 1781-82

Nova genera plantarum...

pt.3, 5 1783-84

Horti medici amstelodamensis rariorum tam Orientalis :quàm Occidentalis Indiæ, aliarumque peregrinarum plantarum, magno studio ac labore, sumptibus Civitatis amstelodamensis, longâ annorum serie collectarum, descriptio et icones ad vivum æri incisæ /auctore Joanne Commelino. Opus posthumum, latinitate donatum, notisque & observationibus illustratum, à Frederico Ruyschio & Francisco Kiggelario.

v.1

Horti medici amstelodamensis rariorum tam Orientalis :quàm Occidentalis Indiæ, aliarumque peregrinarum plantarum, magno studio ac labore, sumptibus Civitatis amstelodamensis, longâ annorum serie collectarum, descriptio et icones ad vivum æri incisæ /auctore Joanne Commelino. Opus posthumum, latinitate donatum, notisque & observationibus illustratum, à Frederico Ruyschio & Francisco Kiggelario.

v.2

Danmarks fauna; illustrerede haandbøger over den danske dyreverden...

Bd.23 (Fugle: 1.Andefugle og Hønsefugle)

Danmarks fauna; illustrerede haandbøger over den danske dyreverden...

Bd.8 (Guldsmede, Døgnfluer, Slørvinger og Copeognather)

Danmarks fauna; illustrerede haandbøger over den danske dyreverden...

Bd.1 (Krybdyr og Padder)