Results: 1740

Functional Effects of Hyperthyroidism on Cardiac Papillary Muscle in Rats

Arq. bras. cardiol; 107 (6), 2016
Abstract Background: Hyperthyroidism is currently recognized to affect the cardiovascular system, leading to a series of molecular and functional changes. However, little is known about the functional influence of hyperthyroidism in the regulation of cytoplasmic calcium and on the sodium/calcium exchang...

Prognostic Value of a New Marker of Ventricular Repolarization in Cirrhotic Patients

Arq. bras. cardiol; 107 (6), 2016
Abstract Background: There is still debate about the relationship between changes in ventricular repolarization on the surface electrocardiogram and cirrhosis severity. Objective: To study the relationship between variables related to ventricular repolarization and the clinical severity of the cirrhoti...

Analysis of Heart Rate Variability Before and During Tilt Test in Patients with Cardioinhibitory Vasovagal Syncope

Arq. bras. cardiol; 107 (6), 2016
Abstract Background: Cardioinhibitory vasovagal response is uncommon during the tilt test (TT). Heart rate variability (HRV) by use of spectral analysis can distinguish patients with that response. Objective: To compare the HRV in patients with cardioinhibitory vasovagal syncope (case group - G1) with ...

Acoustic radiation force impulse (ARFI) elastography compared with biopsy for evaluating hepatic fibrosis after liver transplantation: a cross-sectional diagnostic study

Säo Paulo med. j; 134 (6), 2016
ABSTRACT CONTEXT AND OBJECTIVE: Biopsies are used after liver transplantation to evaluate fibrosis. This study aimed to evaluate the elasticity of transplanted livers by means of a non-invasive examination, acoustic radiation force imaging (ARFI) elastography, correlating the results with the histologi...

Cutoffs and cardiovascular risk factors associated with neck circumference among community-dwelling elderly adults: a cross-sectional study

Säo Paulo med. j; 134 (6), 2016
ABSTRACT CONTEXT AND OBJECTIVE: In elderly people, measurement of several anthropometric parameters may present complications. Although neck circumference measurements seem to avoid these issues, the cutoffs and cardiovascular risk factors associated with this parameter among elderly people remain unkn...

Kidney stones: composition, frequency and relation to metabolic diagnosis

Medicina (B.Aires); 76 (6), 2016
Nephrolithiasis is one of the most frequent urologic diseases. The aim of this paper is to study the composition and frequency of 8854 patient kidney stones and in a subset of them their metabolic risk factors to be related to their type of calculi. Physicochemical and crystallographic methods were used ...

Efecto del 27- hidroxicolesterol en la acción antiplaquetaria de estradiol en mujeres postmenopáusicas

Rev. méd. Chile; 144 (11), 2016
Background: The decline of estrogen levels increases cardiovascular risk in women. Platelets express estrogen receptors and 17β-estradiol- (E2) can produce a protective effect on thrombus formation. The hydroxylation of cholesterol generates several sterols and 27-hydroxycholesterol (27HC) predomina...

Ser físicamente activo modifica los efectos nocivos del sedentarismo sobre marcadores de obesidad y cardiometabólicos en adultos

Rev. méd. Chile; 144 (11), 2016
Background: Sedentary behavior is a major risk factor for cardiovascular disease and mortality. Aim: To investigate whether the associations between sedentary behavior and cardiometabolic markers differs across physical activity levels. Materials and Methods: Cross sectional study of 314 participants age...

Serum testosterone as a biomarker for second prostatic biopsy in men with negative first biopsy for prostatic cancer and PSA>4ng/mL, or with PIN biopsy result

Int. braz. j. urol; 42 (5), 2016
Abstract Introduction: Data from animal, clinical and prevention studies support the role of androgens in prostate cancer growth, proliferation and progression. Results of serum based epidemiologic studies in humans, however, have been inconclusive. The present study aims to define whether serum testost...

Effect of S-methyl-l-thiocitrulline dihydrochloride on rat micturition reflex

Int. braz. j. urol; 42 (5), 2016
ABSTRACT Objective: To evaluate the effect of neuronal nitric oxide synthase on the striated urethral sphincter and the urinary bladder. Materials and Methods: A coaxial catheter was implanted in the proximal urethra and another one in the bladder of female rats, which were anesthetized with subcutaneo...