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—This work addresses the impact of sensing decision fusion rules and operative constraints on the performance of hard decision cooperative spectrum sensing schemes for cognitive radio networks. The work focuses on cooperative spectrum sensing under two sensing operating modes: the Constant False Alarm Rate (CFAR) and the Constant Detection Rate (CDR) mode.(More)
Treatment of hypercholesterolemia with statins (3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors) is effective in the primary and secondary prevention of cardiovascular disease. However, statin use is often associated with a variety of muscle-related symptoms or myopathies. Myopathy may be related in part to statin inhibition of the endogenous(More)
The amino acid arginine has been shown to affect the growth of several tumours, although the mechanisms of its action are not clear. In the present study, using a human breast tumour cell line (MCF-7), we investigated the arginine requirements of tumour cells for optimal protein synthesis and growth, and the metabolic pathway responsible for the(More)
Protease inhibitors (PIs) have been implicated in the development of HIV-associated lipodystrophy through a reduction in the differentiation of preadipocytes. While atazanavir (ATV) is associated with fewer clinical metabolic abnormalities in the short-term, the effects of long-term exposure are not known. ATV effects on preadipocyte replication or(More)
PURPOSE OF REVIEW Abnormalities of acid-base balance accompany many pathological conditions. Acidosis is associated with several diseases such as chronic renal failure, diabetic ketosis, severe trauma and sepsis, and chronic obstructive respiratory disease, which are often associated with muscle wasting. There is evidence that acidosis can induce muscle(More)
OBJECTIVE Aging is associated with a redistribution of body fat including a relative loss of subcutaneous peripheral fat. These changes in body fat can have important clinical consequences since they are linked to increased risk of metabolic complications. The causes and mechanisms of loss of peripheral fat associated with aging are not clear. The aim of(More)
In this study, we investigated the effect of acute metabolic acidosis on tissue protein synthesis. Groups of rats were made acidotic with intragastric administration of NH(4)Cl (20 mmol/kg body wt every 12 h for 24 h) or given equimolar amounts of NaCl (controls). Protein synthesis in skeletal muscle and a variety of different tissues, including(More)
BACKGROUND The synthesis of albumin after oral ingestion of nutrients provides a means of storing amino acids, which can be made available during periods of fasting. OBJECTIVE This study was undertaken to see whether the response of albumin synthesis to the oral intake of nutrients is compromised in elderly subjects. DESIGN Albumin synthesis was(More)
The aim of this paper was to evaluate the factors affecting body fat excess and distribution in prepubertal age. A cross-sectional survey was carried out on children attending the 4th grade of a primary school in Naples. Eighty-eight per cent of the total sample was examined: 52 girls, 58 boys; mean age = 9.6 yrs (s.e. +/- 0.10). Each child underwent a(More)
Albumin synthesis was calculated in healthy male volunteers consuming diets differing in the relative contribution of protein from animal or vegetable sources. In one study (Study 1, n = 4) two isoenergetic and isonitrogenous diets were consumed for a period of 10 d each. One diet (diet A) was animal protein rich (74%), the other one (diet V) contained 67%(More)