Publications by authors named "Alessandra Spiga"

We differentiated the left ventricle non-compaction (LVNC) from hypertrabeculated myocardium due to a negative remodeling in thalassemia intermedia (TI) patients applying linear and planimetric criteria and comparing the cardiovascular magnetic resonance (CMR) findings. CMR images were analyzed in 181 TI patients enrolled in the Myocardial Iron Overload in Thalassemia Network and 27 patients with proved LVNC diagnosis. The CMR diagnostic criteria applied in TI patients were: a modified linear CMR Petersen's criterion based on a more restrictive ratio of diastolic NC/C > 2.

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We prospectively assessed by magnetic resonance imaging (MRI) the advantages of desferrioxamine (DFO) with respect to the absence of chelation therapy in non transfusion-dependent thalassaemia (NTDT) patients. We considered 18 patients non-chelated and 33 patients who received DFO alone between the two MRI scans. Iron overload was assessed by the T2* technique.

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Background: Little information is available about the kidney's involvement in patients with β-thalassaemia major (TM). In particular, there are no studies reporting the outcome of renal function over time.

Methods: In this retrospective study, we evaluated the changes in estimated glomerular filtration rate (eGFR) in 81 adult patients with TM followed for 10 years.

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Goat mtDNA haplogroup A is a poorly resolved lineage absorbing most of the overall diversity and is found in locations as distant as Eastern Asia and Southern Africa. Its phylogenetic dissection would cast light on an important portion of the spread of goat breeding. The aims of this work were 1) to provide an operational definition of meaningful mtDNA units within haplogroup A, 2) to investigate the mechanisms underlying the maintenance of diversity by considering the modes of selection operated by breeders and 3) to identify the peculiarities of Sardinian mtDNA types.

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Pheochromocytoma is a rare disease in the general population and, to the best of our knowledge, only one case has been reported so far in patients with hemoglobinopathies. We describe the occurrence of pheochromocytoma in a patient with thalassemia intermedia associated with Gilbert's disease and Crigler- Najjar Type 2 syndrome.

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Autoimmunity is not believed to be involved in tissue damage of Β-Thalassemia (Β-Thal), although nonspecific triggering of autoimmunity by iron overload has been suggested. We recently re-evaluated thyroid function and autoimmunity in 132 Β-Thal patients born and living in Sardinia Island, where a high prevalence of both Β-Thal and autoimmune disease is well documented and in 1002 age and sex-matched euthyroid individuals from the general population. The prevalence of primary hypothyroidism in Β-Thal patients was 28.

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The purpose of this study was to focus on pathophysiological mechanisms linking β-thalassemia intermedia (β-TI) and minor (β-TMI) with cardiovascular risk. Iron status, prooxidant-antioxidant balance and lipid profiles in serum, and lipid content in peripheral blood mononuclear cells (PBMCs) were evaluated in 20 β-TMI subjects, 22 β-TI patients and in 30 nonthalassemic blood donors. The mRNA levels of some genes involved in the regulation of iron and cholesterol metabolism were also determined.

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Objective: Unlike beta thalassemia major (β-TM) in which cardiac siderosis represents the leading cause of mortality and morbidity, in beta thalassemia intermedia (β-TI), pulmonary hypertension (PHT) and thrombosis seems to be the major cardiovascular complications. However, the mechanism underlying these complications in β-TI is still unclear. Endothelial dysfunction, the key early event in atherogenesis, is now emerging as an important cardiovascular risk determiner in β-TI patients.

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