982 resultados para Key derivation function
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This edition of Health in Ireland: Key Trends provides an overview of significant trends in health and the health services during the past decade. The aim is to reflect the main areas of health and health care and to highlight selected topics of growing concern and/or where new data has become available. Click here to download 2.03MB PDF
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The purpose of Health in Ireland, Key Trends 2011, as with previous editions, is to provide summary data on the main areas of health and health care over the past decade. It also aims to highlight selected trends and topics of growing concern and to include new data where it becomes available. A further objective is to assess ourselves and our progress in the broader EU context. With these goals in mind, the booklet is divided into six chapters ranging from population, life expectancy and health status through to health care delivery, staffing and costs. Click here to download PDF 2.26MB
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Health in Ireland, Key Trends 2012 provides summary statistics on health and health care over the past decade. It also aims to highlight selected trends and topics of growing concern and to include new data where it becomes available. Â Click here to download PDF 2.7mb
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BACKGROUND: The risk/benefit profile of intravitreal melphalan injection for treatment of active vitreous seeds in retinoblastoma remains uncertain. We report clinical and electroretinography results after 6 months of one patient who has shown a favorable initial clinical response to intravitreal melphalan injections for treatment of refractory vitreous seeds. METHODS: Clinical case report. PATIENT: The patient presented at age 17 months with bilateral retinoblastoma [OD: International Classification (ICRB) group E, Reese-Ellsworth (R-E) class Vb; OS: ICRB D, R-E Vb] with no known prior family history. The right eye was enucleated primarily. The patient received systemic chemotherapy and extensive local treatment to the left eye. Ten months later, she presented with recurrent disease, including fine, diffuse vitreous seeds. Tumor control was established with intra-arterial chemotherapy and local treatment. Subsequent recurrence was treated with further intra-arterial chemotherapy, local treatment, and plaque radiotherapy with iodine-125. Persistent free-floating spherical vitreous seeds were treated with 4 cycles of intravitreal melphalan injection via the pars plana, with doses of 30, 30, 30, and 20 μg. RESULTS: After 6 months of follow-up, the left eye remained free of active tumor. Visual acuity was 20/40. Photopic ERGs amplitudes were unchanged compared with those recorded prior to the intravitreal injection treatments. CONCLUSIONS: Intravitreal melphalan injection for refractory spherical vitreous seeds of retinoblastoma with favorable tumor response is compatible with good central visual acuity and preservation of retinal function as indicated by photopic ERG recordings.
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Health in Ireland, Key Trends 2013 provides summary statistics on health and health care over the past ten years. It also highlights selected trends and topics of growing concern and includes new data which has become available during the course of the year. An important objective is to assess ourselves and our progress in the broader EU context. The booklet is divided into six chapters ranging across population, life expectancy and health status through to health care delivery, staffing and costs. Overall, the picture which emerges is of continuing progress, but at a reduced rate, set in a context of very ignificant financial constraints. Rapid ageing of the population in conjunction with lifestyle-related health threats present major challenges now and for the future in sustaining and further improving health and health services in Ireland Click here to download PDF 3.2MB
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Factor D is an essential enzyme for activation of complement by the alternative pathway (AP). It has been difficult to obtain mouse monoclonal antibodies (Mabs) which block the function of factor D. We have developed a strategy to obtain such Mabs using a double screening procedure of the initial clones. We selected the clone whose supernatant had the lowest level of anti-factor D Ab by ELISA and abolished factor D haemolytic activity. Addition of this Mab to human serum was shown to abolish conversion of C3 by cobra venom factor, haemolysis of rabbit erythrocytes, and activation of C3 and C5 by cuprophane dialysis membranes.
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The aim of this study was to characterize the effect of a 5 km running time trial on the neuromuscular properties of the plantar flexors. Eleven well-trained triathletes performed a series of neuromuscular tests before and immediately after the run on a 200 m indoor track. Muscle activation (twitch interpolation) and normalized EMG activity were assessed during maximal voluntary contraction (MVC) of plantar flexors. Maximal soleus H-reflexes and M-waves were evoked at rest (i.e. H (MAX) and M (MAX), respectively) and during MVC (i.e. H (SUP) and M (SUP), respectively). MVC significantly declined (-27%; P < 0.001) after the run, due to decrease in muscle activation (-8%; P < 0.05) and M (MAX)-normalized EMG activity (-13%; P < 0.05). Significant reductions in M-wave amplitudes (M (MAX): -13% and M (SUP): -16%; P < 0.05) as well as H (MAX)/M (MAX) (-37%; P < 0.01) and H (SUP)/M (SUP) (-25%; P < 0.05) ratios occurred with fatigue. Following exercise, the single twitch was characterized by lower peak torque (-16%; P < 0.001) as well as shorter contraction (-19%; P < 0.001) and half-relaxation (-24%; P < 0.001) times. In conclusion, the reduction in plantar flexors strength induced by a 5 km running time trial is caused by peripheral adjustments, which are attributable to a failure of the neuromuscular transmission and excitation-contraction coupling. Fatigue also decreased the magnitude of efferent motor outflow from spinal motor neurons to the plantar flexors and part of this suboptimal neural drive is the result of an inhibition of soleus motoneuron pool reflex excitability.