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1.
Eur J Paediatr Dent ; 12(2): 75-80, 2011 Jun.
Article in English | MEDLINE | ID: mdl-21668275

ABSTRACT

AIM: Oral manifestations are common in HIV+ children, but the impact of these diseases on their daily life is unknown. So the aim of this study was to assess the impact of oral problems on the daily activities of HIV+ children. METHODS: The Child-OIDP-B was used with 59 10-12 year-old HIV+ children, who were outpatients at two public hospitals for HIV treatment in Rio de Janeiro, Brazil. Caries, biofilm and gingival bleeding indexes were recorded. The Kruskall-Wallis and Mann-Whitney tests as well as the Spearman's correlation coefficient were used for analysis. Statistical evaluation: Replies were analysed using the Statgraphics ® Plus Version 5.0 statistics software system, in order to obtain comparative diagrams and graphs using the ANOVA multifactorial system. RESULTS: The Child-OIDP-B scores ranged from 0 to 30, (mean=6.09) and 71.2% of the children were affected by oral problems. Association was found between oral impact and number of caries (p=0.009). Children receiving HAART therapy had a Child-OIDP-B score (4.87), much lower than those who were not (8.87) (p=0.038). The most reported oral impact of the disease was eating (55.6%), but oral wounds were the most prevalent type of lesions (76.3%). As regards the level of intensity of the impact, moderate severity was prevalent in all 59 children and 66.1% reported that oral impacts affected 1-4 daily activities, 50.8% of all children were not satisfied with their appearance and oral health; 23.7% perceived the impact of HIV-infection on general health. CONCLUSION: Most children suffered the impact of oral problems on their daily activities, mainly functional impacts.


Subject(s)
Activities of Daily Living , HIV Infections/psychology , Mouth Diseases/psychology , Quality of Life , Tooth Diseases/psychology , Antiretroviral Therapy, Highly Active , Attitude to Health , Biofilms , Child , DMF Index , Dental Caries/psychology , Eating/physiology , Emotions , Female , Gingival Hemorrhage/psychology , HIV Infections/complications , HIV Seropositivity/psychology , Health Status , Humans , Interpersonal Relations , Male , Mouth Diseases/complications , Oral Health , Periodontal Index , Personal Satisfaction , Sleep/physiology , Smiling/physiology , Speech/physiology , Tooth Diseases/complications , Toothbrushing
2.
Oral Dis ; 16(5): 431-7, 2010 Jul.
Article in English | MEDLINE | ID: mdl-20233327

ABSTRACT

OBJECTIVE: This study describes the expression of acidic ectophosphatase activity on twenty isolates of C. albicans from oral cavities of HIV-infected children (HIV+) and compares them with fifteen isolates from HIV-negative children (HIV-), as well as the fungal adhesion to epithelial cells and medical records. METHODS: The activities were measured in intact cells grown in BHI medium for 48 h at 37 degrees C. Phosphatase activity was assayed at pH 5.5 using 4-methylumbelliferyl phosphate. Yeast adhesion was measured using the MA 104 epithelial cell line. RESULTS: Mean values of ectophosphatase activity were 610.27 +/- 166.36 and 241.25 +/- 78.96 picomoles 4-methylumbelliferone/h/10(7) cells for HIV+ and HIV- group, respectively (P = 0.049). No correlation between C. albicans enzyme activity from HIV children with viral load and CD4 percentual was observed. Yeasts with high enzyme activity, isolated from HIV+ children showed greater adherence than yeasts with basal levels of ectophosphatases from HIV- (Spearman correlation, r = 0.8). Surface phosphatase activity was apparently involved in the adhesion to host cells, as the enhanced attachment of C. albicans to host epithelial cells was reversed by pretreatment of yeast with sodium orthovanadate (1 mM), an acid phosphatase inhibitor. CONCLUSION: These results show that C. albicans from HIV+ has an ectophosphatase activity significantly higher than the other isolates. Yeasts expressing higher levels of surface phosphatase activity showed greater adhesion to epithelial cells. So, the activity of acidic surface phosphatases on these cells may contribute to the early mechanisms required for disease establishment.


Subject(s)
Acid Phosphatase/metabolism , Candida albicans/enzymology , HIV Seronegativity , HIV Seropositivity/microbiology , Acid Phosphatase/antagonists & inhibitors , Animals , CD4 Lymphocyte Count , Cell Adhesion/drug effects , Cell Adhesion/physiology , Cell Line , Child , Enzyme Inhibitors/pharmacology , Epithelial Cells/microbiology , HIV/isolation & purification , HIV Seropositivity/virology , Humans , Hydrogen-Ion Concentration , Hymecromone/analogs & derivatives , Indicators and Reagents , Mouth Mucosa/microbiology , Mouth Mucosa/pathology , Vanadates/pharmacology , Viral Load
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