919 resultados para Crónica Periodística


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Nitric oxide (NO) is a free radical gas, inorganic, which has seven electrons of nitrogen and oxygen eight, possessing an unpaired electron. This radical is produced from L-arginine by a reaction mediated by the enzyme NO synthase. NO it is about a radical of who acts abundant on a variety of biological processes, particularly when produced by endothelial cells plays a significant role in cardiovascular control, as a modulator of peripheral vascular resistance and platelet aggregation. This free radical has also a neurotransmitter and mediator of the immune system. NO kidney function has been considered in many physiological functions such as: (a) regulation of hemodynamics and glomerular function tubuloglomerular, (b) participation in pressure natriuresis (c) maintaining medullar perfusion (d) inhibiting sodium reabsorption tubular, and (e) acting as a modulator of the activity of the sympathetic nervous system. Given these functions, the occurrence of its deficiency is associated with chronic kidney disease (CKD) in vasoconstriction and consequently glomerular hypertension, high blood pressure (HBP), proteinuria and progression of renal dysfunction. This work has the scope to describe the role of NO in renal physiology and pathophysiology of CKD.

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In order to better understand the natural history of chronic functional constipation, a questionnaire was applied to 163 children and infants, before beginning standardized treatment. Median age (range) at start was 3 mo(0-108 mo) but age at arrival at the Pediatric Gastroenterology Unit was 53 mo(2-146 mo). In 62.4% of the cases symptoms began before or up to 3 mo after cow's milk introduction and rarely around (-/+ 6 mo) toilet training. Possible complications appeared progressively, often at preschool or school age or as the first noticeable manifestation: recurrent abdominal pain (61.1%), fecal soiling (45.4%), fecal blood (35%), enuresis (23.3%), vomiting (19%), urinary infection (17.9%), urinary retention (8.6%). Abdominal distension was rarely detected on physical examination and was usually discrete. In conclusion, children attended in Botucatu begin their constipation at an early age, frequently associated with weaning,and important complications may ensue along years. This evolution should be avoided by prevention and early treatment of constipation.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Saúde Coletiva - FMB

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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The presence of Candida and the production of histolytic enzyms by the isolated samples were observed in the saliva and gingival fluid in adult chronic periodontitis patients and health ones. It was also verified the quantity of antibodies against Candida (IgG, IgA, IgM and IgE) in the saliva and sera of the same patients through ELISA technique. Yeasts of the genus Candida mainly C. albicans were isolated from saliva in higher number from adult chronic periodontitis patients in relation to the controle with statistically significant difference. The meon of the quantity of isolated Candida (UFC/ml) were higher for periodontítis patients, although this difference was not statistically significative. Samples of Candida isolated from both groups produced hystolytic enzymes (hyaluronidase, condroitin sulfatase, proteinase, phospholipase) that are considered patogenicity factors in periodontol diseases. Only one sample of each group (C albicans) didn't produce the four analysed enzymes. The antibodies levels against Candida (IgG, IgM and IgA in saliva, IgG and IgA in sera and IgG and IgM in gingival Fluid), were statistically higher in adult chronic periodontitis patients in relation to periodontically health individuals, suggesting humoral immune response by periodontitis patients to the yeasts of the genus Candida

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The objective of this study was to evaluate the microbial susceptibility to metronidazole from microorganisms isolated from patients with chronic or aggressive periodontitis. The samples were obtained from 50 patients with periodontitis and microorganisms were isolated onto selective and nonselective culture media, identified by biochemical methods and tested for susceptibility to metronidazole. The results evidenced the susceptibility to metronidazole among gram-negative anaerobes and some intermediate susceptibility and resistance among Grampositive anaerobes and facultatives.

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The phenotypes of the hemoglobin-haptoglobin (HbHp) system were measured in 124 subjects, 100 patients with chronic pain in temporomandibular disorders and 24 normal, without any bodily pain during the years 2000 -2003. The system Hb-Hp showed polymorphism Hp1-1, Hp2-1 and Hp2-2, at 100% and 85% respectively; anahaptoglobinemia (Hp0) in 15% of the sample studied. Hp1-1 genotype was present significantly (p < 0, 0001) in patients with TMDs, regardless the clinical type TMD, suggesting that Hp1-1 and likely genetic marker of susceptibility for the development of chronic pain in TMD.

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Infection with hepatitis C virus is a worldwide public health problem it affects about 170 to 250 million people worldwide may lead to complications such as cirrhosis and hepatocellular carcinoma. Patients with chronic hepatitis C most often is inadequate nutrient intake, macro and micronutrients, which induces changes in nutritional status and lipid profi le. Supplementation with vitamin C has shown benefi t. Limited information is available on levels of vitamin C in this type of illness. The study aimed to evaluate the effect of regular intake of orange juice on the nutritional and dietetic of patients with chronic hepatitis C infection. The study enrolled 23 patients volunteers, 13 men and 10 women treated at the Special Health Service of Araraquara (SESA). They consumed for 8 weeks 500 mL.d-1 of pasteurized orange juice. At baseline and after 8 weeks of juice intake the patients were evaluated for anthropometric parameters. The dietary intervention with 500 mL.d-1 with orange juice during the 8 weeks did not alter the nutritional status of patients.

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To understand the implications of lead contamination contributes to more effective public politics to eliminate exposure to the metal and orientation of interventions that minimize their effects. In this paper we intended to evaluate the effects of lead contamination in children, with the Teste de Desempenho Escolar (TDE). In Study 1, transversal, aimed to evaluate the influence of blood lead levels in 28 participants of both sexes, of seven to fifteen years, divided into two groups according to the level of contamination. In Study 2, longitudinal study aimed to evaluate the effects of contamination on the school ,performance of 10 children at an interval of four years. Results showed significant underperformance for children with higher levels of contamination and that the level of academic performance remains significantly lower than expected for the series in which they find themselves. The data seem to indicate the deleterious effects of lead contamination in school performance.

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)