Neuroimaging research indicates that human intellectual ability is associated to brain structure including the thickness of the cerebral cortex. Most studies show that general intelligence is positively associated with cortical thickness in areas of association cortex allocated throughout both brain hemispheres. Changes in cortical thickness over time have been related to intelligence, but whet...

BACKGROUND The Zweymüller stem is well-known in Europe and widely used for total hip replacement since 1980. Few authors have noted the presence of increased bone density below the tip of the stem; however, the underlying mechanism is still unknown. The aim of this study was to reveal factors influencing bone remodeling around the tip of the Zweymüller stem. MATERIAL AND METHODS 102 consecuti...

This is a pilot study dealing with the reduced femoral bone structure in Zucker diabetic fatty (ZDF) rats following 10 weeks treatment bee bread and Cornelian cherries. The adult ZDF were divided into 4 groups: E1 group received (500 mg/kg b.w. daily), E2 cherries per day), E3 was simultaneously supplemented by + 500 C served as an untreated control. A non-significant decrease blood glucose, to...

Decreased cortical thickness and increased cortical porosity are the key anatomic changes responsible for osteoporotic fractures in elderly women and men. The cellular basis of these changes is unbalanced endosteal and intracortical osteonal remodeling by the osteoclasts and osteoblasts that comprise the basic multicellular units (BMUs). Like humans, mice lose cortical bone with age, but unlike...

The effect of 1 Hz, 30 mT pulsed magnetic fields on young adult rat femoral metaphyseal bone thickness was assessed. Ten same litter, female Wistar rats were studied; five of them underwent 30 min magnetic stimulation sessions for 20 consecutive days. The anterior and posterior cortical, as well as trabecular bone transverse thicknesses were measured. The results obtained under clear field micr...

Intraperitonael administration of 0.1 to 0.2gm/kg Na-Sulfacetylthiazole (SAT) twice a week for 4 weeks induced obstructive nephropathy, and bone changes similar to osteoporosis with a decrease in the X-ray density and calcium content of the tail bone and femur, decrease of femoral cortical thickness and an increase in bone resorption cavities in 3 month old rats. Such bone changes, prevented th...

BACKGROUND Measurement of bone mineral density by dual x-ray absorptiometry combined with clinical risk factors is currently the gold standard in diagnosing osteoporosis. Advanced imaging has shown that older patients with fragility fractures have poor bone microarchitecture, often independent of low bone mineral density. We hypothesized that premenopausal women with a fracture of the distal en...

Within each sex, there is an association between hip fracture risk and the size of the proximal femur, with larger femurs apparently more susceptible to fracture. Here, we investigate whether the thickness and density of the femoral cortex play a role in this association: might larger femurs harbour focal, cortical defects? To answer this question, we used cortical bone mapping to measure the d...