295 research outputs found
N-acetyl-beta-D-glucosaminidase (NAG) and NAG isoenzymes in children with upper and lower urinary tract infections
No full text: The use of N-acetyl-beta-D-glucosaminidase (NAG) to diagnose the site of urinary tract infection was studied in pediatric patients. Differentiation between upper and lower tract infections (UTI) was based on clinical grounds and on elevated erythrocyte sedimentation rate, C-reactive protein and fever. NAG excretion expressed as nmol X h-1 X mg-1 of urinary creatinine was higher in children with upper UTI (mean +/- SE 906 +/- 236) than in those with lower UTI (145 +/- 23) or healthy children (151.6 +/- 10) (p less than 0.01 by Duncan's test). In children with upper UTI, NAG excretion fell in parallel with the remission due to antibiotic treatment. This however was not seen in children treated with aminoglycosides. A specific and significant elevation (p less than 0.01) of the B isoenzyme of NAG was documented in children with upper UTI but not in those with lower UTI (B form in upper UTI 49.2% +/- 3.9 versus 21.9 +/- 3.3 in lower UTI; healthy children 18.9 +/- 3.4). The percentage of B isoenzyme excreted was high in two children with upper UTI but was low total NAG urinary excretion, suggesting that the quantification of isoenzymes offers further specificity in diagnosis. We conclude that the measurement of NAG and its isoenzymes in children with UTI provides useful information in the diagnosis of the site of infection
Restoration of bacterial killing activity of human respiratory cystic fibrosis cells through cationic vector-mediated cystic fibrosis transmembrane conductance regulator gene transfer
No full textInterleukin 6 activity in infants and children with bacterial meningitis. The Collaborative Study on Meningitis
No full text: Concentrations of interleukin 6 (IL-6) in cerebrospinal fluid (CSF) and serum of infants and children with bacterial meningitis were determined and correlations were sought with other indices of inflammation and with outcome. Forty-two patients ages 1 month to 15 years (mean, 2.5 years) were studied. IL-6 activity was detectable (greater than 50 units/ml) in 30 of 36 CSF samples collected at admission from patients with meningitis and in 1 of 23 controls with fever and normal CSF findings. Mean values were 36,000 units/ml (range, 151-156,000). IL-6 activity in CSF persisted during the first 5 days of illness. IL-6 concentrations at admission were not associated with clinical findings, CSF leukocyte, protein and glucose concentrations, serum C-reactive protein concentration and neurologic complications or sequelae. IL-6 was also detected in the serum of 3 of 14 patients with meningitis and in 0 of 7 controls with no infectious disease. The presence of IL-6 was not associated with bacteremia or with duration of fever before admission. The presence of IL-6 in the CSF of pediatric patients with bacterial meningitis is in accordance with available data on other cytokines and suggests their role as mediators of meningeal inflammation
Plasma glutamic acid levels in premature newborn
No full text: 24 premature, newborn infants were investigated for plasma glutamic acid (GA) levels before and after a normal milk feed, to ascertain if the ingestion of GA present in the milk could result in an increase of its plasma level. No increases were detected in plasma between 5 and 90 min after the feed. These results may be important in respect to the problem of the possible toxicity of monosodium glutamate (MSG) added to baby foods
Restoration of bacterial killing activity of human respiratory cystic fibrosis cells through cationic vector-mediated cystic fibrosis transmembrane conductance regulator gene transfer
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The genetic background of osteoporosis in cystic fibrosis: Association analysis with polymorphic markers in four candidate genes
No full textAbstractBackgroundReduced Bone Mass Density (BMD) is frequent in Cystic Fibrosis (CF). Potentially, other genes than the Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) gene may contribute to the bone phenotype variability in CF patients.MethodsFour candidate genes likely associated with BMD variability were studied: the vitamin D receptor (VDR) gene, the estrogen receptor alpha (ESR1), the calcitonin receptor (CALCR) and the type I alpha 1 collagen (COL1A1) gene. A complete bone and CF evaluation was obtained for 82 subjects (39 m, 43 f): 15 had normal BMD (group 1), 46 were osteopenic (group 2), and 21 were osteoporotic (group 3).ResultsNo statistical difference was found among the three groups for age, sex, pancreatic status, and vertebral fractures, nor for any of the biochemical markers. Weight, Body Mass Index (BMI), and FEV1, scored significantly worse in the two groups with the lowest T score. The CFTR mutations R1162X and F508del were more frequent in patients with lower BMD (p=0.044 and p=0.071). There was no significant difference in the distribution of the five marker genotypes among the 3 groups defined according to the unadjusted or adjusted (BMI and FEV1) BMD T score. No significant correlation was found between the VDR, CALCR, or COL1A1 gene polymorphisms and reduced BMD values. The individual ESR1 PvuII-XbaI haplotype C–A is associated to elevated u-calcium levels whereas the haplotype T–A is associated to lower values (p=0.00251).ConclusionsThere was no evidence that the genes under study, with the possible exception of ESR1 gene variants, may modulate bone phenotype in CF
Effects of azithromycin on the expression of ATP binding cassette transporters in epithelial cells from the airways of cystic fibrosis patients.
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