Jairo Panetta

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BACKGROUND Reactive oxygen species may mediate tissue injury in inflammatory bowel disease. Aminosalicylates have antioxidant activity and the antioxidants, superoxide dismutase and allopurinol, are of reported benefit in inflammatory bowel disease. AIM To develop a convenient technique for testing the antioxidant potential of standard and novel(More)
Until recent years there has been no evidence from randomized controlled trials (RCTs) on the efficacy of deep brain stimulation (DBS) for Parkinson’s disease (PD). This review and meta-analysis of RCTs describes the efficacy of DBS in improving motor signs, functionality and quality of life of PD patients. Several electronic databases were consulted up to(More)
Summary: We reviewed the medical records of all patients with confirmed mitochondrial diseases treated with any or all of thiamin, riboflavin, coenzyme Q, vitamin C (~10 mg/kg per day) and a high-fat diet (50–60% of caloric intake) between 1997 and 2003. There were 15 patients (9 male): 10 had enzymatic deficiency and 10 had a molecular diagnosis. Age at(More)
BACKGROUND In cases of psoriasis (PS), the etiology of the underlying liver disease is occasionally unknown. To investigate antibodies to hepatitis C virus (anti-HCV), their prevalence and clinical significance, 118 unselected outpatients with PS were studied prospectively. METHODS Anti-HCV was assayed in serum by second-generation enzyme-linked(More)
User-level threads have been used to implement migratable MPI processes. This is a better strategy to implement load balancing mechanisms. That is because, in general, these threads are faster to create, manage and migrate than heavy processes and kernel threads. However, they present some issues concerning private data because they break the private(More)
We revisit and use the dependence transformation method to generate parallel algorithms suitable for cluster and grid computing. We illustrate this method in two applications: to obtain a systolic matrix product algorithm, and to compute the alignment score of two strings. The product of two n × n matrices is viewed as multiplying two p × p matrices whose(More)
We describe the computational characteristics of the Kirchhoff prestack seismic migration currently used in daily production runs at Petrobras and its port to novel architectures. Fully developed in house, this portable and fault tolerant application has high sequential and parallel efficiency, with parallel scalability tested up to 8192 processors on the(More)
The diagnosis of mitochondrial respiratory chain deficiency is usually made by analysis of mitochondrial respiratory chain activity in muscle biopsy. We describe 4 patients in whom the diagnosis was based on mitochondrial respiratory chain deficiency in liver alone. In 3 patients, liver complex IV activity was deficient, and the 4th patient had liver(More)