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Age-related bone loss is associated with changes in bone cellularity with characteristically low levels of osteoblastogenesis. The mechanisms that explain these changes remain unclear. Although recent in vitro evidence has suggested a new role for proteins of the nuclear envelope in osteoblastogenesis, the role of these proteins in bone cells(More)
BACKGROUND Homocysteine (HCY) has recently been linked to fragility fractures. Moreover, HCY activates osteoclasts (OC). Elevated HCY concentrations are mainly caused by folate, vitamin B12 (B12) and B6 (B6) deficiencies. We hypothesized that folate, B12 and B6 deficiencies stimulate OC activity. MATERIALS AND METHODS OC were cultured from peripheral(More)
BACKGROUND A seminar course was developed in order to train medical students in qualitative research methods, while providing an introduction to the field of General Practice. Students were enabled to conduct semi-structured interviews with general practitioners (GPs), during which they learned about the prevention, diagnosis, and treatment of frequently(More)
BACKGROUND Vitamin D testing is increasing worldwide. Recently several diagnostic manufacturers including Abbott and Siemens have launched automated 25-hydroxy vitamin D (25OH-D) immunoassays. Furthermore, preexisting assays from DiaSorin and Roche have recently been modified. We compared the performance of 5 automated immunoassays, an RIA and 2 liquid(More)
BACKGROUND Several clinical trials have reported B vitamins to be associated with osteoporosis. OBJECTIVE Our objective was to investigate whether low serum B vitamins are associated with altered structural and biomechanical properties of human bone. DESIGN Femoral heads of 94 men and women who underwent hip arthroplasty were analyzed by using(More)
BACKGROUND Cardiac troponins I and T and brain natriuretic peptide are the accepted standards to serologically identify myocardial necrosis and elevated wall stress. In addition, they allow risk stratification in cardiovascular patients. The clinical significance of increases in cardiac markers after strenuous endurance exercise in obviously healthy(More)
We develop a dynamic bio-economic model of bacterial resistance and disease transmission in which we characterize the pricing policy of a monopolist who is protected by a patent. After expiration, the monopolist behaves competitively in a generic industry having open access to the common pool of antibiotic efficacy and infection. The monopolist manages(More)
Cardiomyopathies occur by mechanisms that involve inherited and acquired metabolic disorders. Both folate and vitamin B12 deficiencies are associated with left ventricular dysfunction, but mechanisms that underlie these associations are not known. However, folate and vitamin B12 are methyl donors needed for the synthesis of S-adenosylmethionine, the(More)
BACKGROUND Recently, increased plasma homocysteine (HCY) has been suggested as a novel independent risk factor for osteoporotic fractures. This study aimed to analyze the effect of a HCY lowering therapy by folic acid (FA) supplementation on biochemical bone markers in healthy subjects. MATERIAL AND METHODS We treated 61 healthy individuals (mean age:(More)