Rita Barreto

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Agaves are perennial crassulacean acid metabolism (CAM) plants distributed in tropical and subtropical arid environments, features that are attractive for studying the heat-shock response. In agaves, the stress response can be analysed easily during leaf development, as they form a spirally shaped rosette, having the meristem surrounded by folded leaves in(More)
Agave tequilana Weber var. Azul plants reproduce asexually by producing ramets. Continuous production of ramets throughout the vegetative cycle of the parent delays the time of harvesting of heads for tequila production. Little is known about the factors influencing their emergence. Heads are engrossed rosettes where fructans are stored. We show here that,(More)
OBJECTIVE Experimental and clinical studies have shown that a novel symbiotic (known as SCM-III) exerts a beneficial effect on gut translocation and local and systemic inflammatory and microbial metabolic parameters. The present investigation was a preliminary trial on the effectiveness of SCM-III for irritable bowel syndrome (IBS). METHODS Sixty-eight(More)
OBJECTIVE Acute radiation of the small intestine causes an immediate and potentially reversible effect on the sensitive regenerative epithelium of the intestinal mucosa while markedly altering the overall intestinal ecosystem. The aim of the present study was test a novel probiotic mixture formulation (Microflorana-F) in an experimental model of acute(More)
OBJECTIVE Metals undergo redox cycling and there is increasing evidence of free radical generation and oxidative injury in the pathogenesis of liver injury and fibrosis in metal storage diseases. The aim of the present study was to test a natural hepatoprotective compound in metal-induced liver injury. METHODS Hepatocytes were isolated from Wistar rats by(More)
OBJECTIVE The aim of this study was to test the effect of gut manipulation by either novel synbiotics or by metronidazole on either endotoxemia or the severity of liver damage in the course of acute pancreatitis from alcohol ingestion. METHODS Sprague-Dawley rats were fed for 1 week through an intragastric tube a liquid diet with either: (i) 1 mL t.i.d.(More)
The aim of this study was to test the effect of antioxidant supplementation on enzymatic abnormalities and free radical-modified DNA adducts associated with premalignant changes in the gastric mucosa of elderly patients with HP-negative atrophic gastritis (CAG). Sixty patients with atrophic gastritis and intestinal metaplasia underwent a nutritional(More)
CONCLUSION These data show that pure pancreatic juice of AICP patients has a markedly defective antibacterial activity. This finding might be of potential clinical interest in the understanding of the pathophysiology of the disease. BACKGROUND The aim of the present study was to test the antibacterial activity of pure pancreatic juice in patients with(More)
BACKGROUND/AIMS Thirty alcoholic patients and 24 teetotaler dyspeptic patients were considered and underwent baseline blood chemical evaluation and the Schilling test. METHODOLOGY During gastroscopy, biopsy samples were taken to assay: routine histology, malonyldialdehyde, vitamin E and glutathione concentration and for testing vitamin B12-Intrinsic(More)
OBJECTIVE The aim of the present study was to test the hypothesis that protein-calorie malnutrition aggravates the gut translocation of Candida albicans triggered by mesenteric ischemia-reperfusion (IR) injury in an experimental model while testing a natural product containing the antifungal anethole/polygodial mixture (Kolorex). METHODS MFI strain white(More)
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