Search results for "Biochemistry"
showing 10 items of 20172 documents
Frequency and determinants for hemorrhagic transformation of posterior cerebral stroke : Posterior ischemic stroke and hemorrhagic transformation.
2017
BACKGROUND: hemorrhagic transformation is a threatening ischemic stroke complication. Frequency of hemorrhagic transformation differs greatly among studies, and its risk factors have been usually studied in patients with anterior ischemic stroke who received thrombolytic therapy. We evaluated, in a hospital-based series of patients with posterior ischemic stroke not treated with thrombolysis, frequency and risk factors of hemorrhagic transformation. Patients with posterior circulation stroke were seen in our Department during the period January 2004 to December 2009. Demographic and clinical information were collected. We estimated risk for spontaneous hemorrhagic transformation by means of…
Infliximab and ulcerative colitis
2006
Expert Opin Biol Ther. 2006 Apr;6(4):401-8. Infliximab and ulcerative colitis. Cottone M, Mocciaro F, Modesto I. Università di Palermo, Istituto di Medicina Generale e Pneumologia, Via Trabucco 180, Palermo, Italy. dickens@tin.it Tumour necrosis factor (TNF)-alpha is an inflammatory cytokine that plays a main role in the inflammatory process underlying inflammatory bowel disease (IBD). Despite the fact that the cytokine profiles associated with ulcerative colitis (UC) and Crohn's disease (CD) are classically considered different (a Th2 pattern in UC and a Th1 pattern in CD), there are several evidences in vitro and in vivo that TNF-alpha has an important role in UC. For this reason, inflixi…
Psycho-Social Factors in Patients with Cardiovascular Disease Attending a Family-Centred Prevention and Rehabilitation Programme: EUROACTION Model in…
2021
Background: Coronary heart disease (CHD) persists as the leading cause of death worldwide. Cardiovascular prevention and rehabilitation (CVPR) has an interdisciplinary focus, and includes not only in physiological components, but it also addresses psycho-social factors. Methods: The study analysed the Spanish psycho-social data collected during the EUROACTION study. In Spain, two hospitals were randomised in the Valencia community. Coronary patients were prospectively and consecutively identified in both hospitals. The intervention hospital carried out a 16-week CVPR programme, which aimed to assess illness perceptions and establish healthy behaviours in patients and their partners. Results…
Cardiac pacemaker function of HCN4 channels in mice is confined to embryonic development and requires cyclic AMP.
2008
Important targets for cAMP signalling in the heart are hyperpolarization-activated and cyclic nucleotide-gated (HCN) channels that underlie the depolarizing 'pacemaker' current, I(f). We studied the role of I(f) in mice, in which binding of cAMP to HCN4 channels was abolished by a single amino-acid exchange (R669Q). Homozygous HCN4(R669Q/R669Q) mice die during embryonic development. Prior to E12, homozygous and heterozygous embryos display reduced heart rates and show no or attenuated responses to catecholaminergic stimulation. Adult heterozygous mice display normal heart rates at rest and during exercise. However, following beta-adrenergic stimulation, hearts exhibit pauses and sino-atrial…
Theoretical approach and clinical application of kinetic modelling in dialysis.
1991
Using kinetic modelling for shaping profile dialysis, we present a promising approach to improve the cardiovascular stability of patients during dialysis treatment. In order to obtain an insight into the physiological mechanisms of increased stability, a model considering alterations of electrolytes and water distribution and of acid-base status was developed. This algorithm was used for the evaluation of 114 dialysis sessions, which were performed with highly individualised profiles. Each profile was developed for one patient by trying empirically to prevent episodes of hypotension as well as other clinical problems throughout dialysis. The main advantage of profile dialysis compared to st…
Role of magnesium in insulin action, diabetes and cardio-metabolic syndrome X
2003
Magnesium (Mg) is one of the most abundant ions present in living cells and its plasma concentration is remarkably constant in healthy subjects. Plasma and intracellular Mg concentrations are tightly regulated by several factors. Among them, insulin seems to be one of the most important. In vitro and in vivo studies have demonstrated that insulin may modulate the shift of Mg from extracellular to intracellular space. Intracellular Mg concentration has also been shown to be effective in modulating insulin action (mainly oxidative glucose metabolism), offset calcium-related excitation-contraction coupling, and decrease smooth cell responsiveness to depolarizing stimuli. A poor intracellular M…
Thrombopoietin Receptor Agonists for Severe Thrombocytopenia after Allogeneic Stem Cell Transplantation: Experience of a Multicenter Study from the G…
2018
Abstract Introduction Thrombocytopenia is a common complication after allogeneic hematopoietic stem cell transplantation (allo-SCT). Underlying mechanisms are poorly known and usually multifactorial. Its treatment is not well defined, mostly based in platelet transfusion. Thus, is important to identify new strategies to manage this important post-SCT complication. Romiplostim and Eltrombopag are currently available thrombopoietin receptor agonists (TPO-RAs) that stimulate platelet production. Some studies with very small number of cases have reported their potential efficacy in the allo-SCT setting. For this reason, the aim of our study is to analyze the efficacy and safety of TPO-RAs for s…
MERIT Study – “Multicenter Evaluation of Patient- and Lesion-Specific Prognostic Factors for RadioImmunoTherapy with 90yttrium-Labeled Anti-CD20 in F…
2009
Abstract Abstract 4792 Background / Aim Although prognostic factors (PF) for conventional lymphoma therapy are well known and used in clinical practice and medical research, the PF for radioimmunotherapy (RIT) have not been fully defined until now. The aim of this prospective multicenter trial is to identify patient- and lesion-specific PF for a standard RIT using 90Yttrium-labeled anti-CD20-antibodies in relapsed or refractory follicular lymphoma (FL) by means of clinical and image data including FDG-PET and CT. To prove the feasibility of the multicenter web-based data collection and to assess the imaging data we performed an analysis on retrospective data. Material and methods This retro…
Effects of dietary conjugated linoleic acids in the control of adiposity and obesity‐related disorders
2007
The body fat-lowering effect of conjugated linoleic acids (CLA) in experimental animals has attracted much interest because of the potential use of CLA as weight loss agents in humans. The objective of this review was to give an overview of the results from human intervention trials. The review also addresses experimental studies in animal models and in cultured cells. CLA appear to provoke fat mass loss and an increase of fat-free mass in rodents, but the results in humans are inconsistent and much less clear than in rodents. Thus, the results of studies in humans do not support a body fat-lowering effect of CLA. There are indications from animal studies that the trans-10, cis-12 CLA isome…
Improved femoral neck BMD in older Finnish women between 2002 and 2010.
2013
Abstract Purpose The number of hip fractures among Finns over 50-years of age rose constantly between 1970 and 1997, but since then, there has been a nationwide decline in incidence of hip fractures. One possible explanation, although not the only one, for the declining fracture rates, could be improved bone mineral density (BMD). The aim of this study was to evaluate differences in femoral neck BMD between older Finnish women born about a decade apart. Methods We compared the baseline data of two population-based samples of home-dwelling 70–80-year-old women who were initially recruited in exercise intervention studies ( N = 216 in Cohort1, and N = 389 in Cohort 2). Femoral neck BMD was …