EDNA MARIA DE ALBUQUERQUE DINIZ
Projetos de Pesquisa
Unidades Organizacionais
Departamento de Pediatria, Faculdade de Medicina - Docente
Instituto da Criança, Hospital das Clínicas, Faculdade de Medicina - Médico
LIM/36 - Laboratório de Pediatria Clínica, Hospital das Clínicas, Faculdade de Medicina
Instituto da Criança, Hospital das Clínicas, Faculdade de Medicina - Médico
LIM/36 - Laboratório de Pediatria Clínica, Hospital das Clínicas, Faculdade de Medicina
4 resultados
Resultados de Busca
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- Auditory pathway maturational study in small for gestational age preterm infants(2014) ANGRISANI, Rosanna Giaffredo; DINIZ, Edna Maria Albuquerque; GUINSBURG, Ruth; FERRARO, Alexandre Archanjo; AZEVEDO, Marisa Frasson de; MATAS, Carla GentilePURPOSE: To follow up the maturation of the auditory pathway in preterm infants small for gestational age (SGA), through the study of absolute and interpeak latencies of auditory brainstem response (ABR) in the first six months of age. METHODS: This multicentric prospective cross-sectional and longitudinal study assessed 76 newborn infants, 35 SGA and 41 appropriate for gestational age (AGA), born between 33 and 36 weeks in the first evaluation. The ABR was carried out in three moments (neonatal period, three months and six months). Twenty-nine SGA and 33 AGA (62 infants), between 51 and 54 weeks (corrected age), returned for the second evaluation. In the third evaluation, 49 infants (23 SGA and 26 AGA), with age range from 63 to 65 weeks (corrected age), were assessed. The bilateral presence of Transient Evoked Otoacoustic Emissions and normal tympanogram were inclusion criteria. RESULTS: It was found interaural symmetry in both groups. The comparison between the two groups throughout the three periods studied showed no significant differences in the ABR parameters, except for the latencies of wave III in the period between three and six months. As for the maturation with tone burst 0.5 and 1 kHz, it was found that the groups did not differ. CONCLUSION: The findings suggest that, in the premature infants, the maturational process of the auditory pathway occurs in a similar rate for SGA and AGA. These results also suggest that prematurity is a more relevant factor for the maturation of the auditory pathway than birth weight.
- Autoimmune manifestations in SCID due to IL7R mutations: Omenn syndrome and cytopenias(2014) ZAGO, Claudia Augusta; JACOB, Cristina Miuki Abe; DINIZ, Edna Maria de Albuquerque; LOVISOLO, Silvana Maria; ZERBINI, Maria Claudia Nogueira; DORNA, Mayra; WATANABE, Leticia; FERNANDES, Juliana Folloni; ROCHA, Vanderson; OLIVEIRA, Joao Bosco; CARNEIRO-SAMPAIO, MagdaB+NK+SCID (severe combined immunodeficiency) due to IL7R alpha deficiency represents approximately 10% of American SCID cases. To better understand the spectrum of autoimmune disorders associated with IL7R alpha deficiency, we describe two unrelated IL7R alpha-deficient female SCID infants whose clinical picture was dominated by autoimmune manifestations: one with intrauterine Omenn syndrome (OS) and another with persistent thrombocytopenic purpura since 4 months of age. The OS baby harbored a homozygous p.C118Y mutation in IL7R. She presented dense eosinophilic infiltrates in several organs, including pancarditis, which may have contributed to her death (on the 2nd day of life). B cells were observed in lymph nodes, spleen, bone marrow and thymus. The second patient harbored compound heterozygous p.01 8Y and p.I121NfsX8 mutations. She underwent a successful unrelated cord blood transplant. In conclusion, early OS can be observed in patients with IL7R mutations, and autoimmune cytopenias could also complicate the clinical course of SCID babies with this type of defect. (C) 2014 Published by Elsevier Inc. on behalf of American Society for Histocompatibility and Immunogenetics.
- Longitudinal electrophysiological study of auditory pathway in small for gestational age infants(2014) ANGRISANI, Rosanna Giaffredo; DINIZ, Edna Maria Albuquerque; GUINSBURG, Ruth; FERRARO, Alexandre Archanjo; AZEVEDO, Marisa Frasson de; MATAS, Carla GentilePURPOSE: To follow the maturation of the auditory pathway of infants born small for gestational age term, by studying absolute and interpeak latencies of Auditory Brainstem Response (ABR) in the first six months of life. METHODS: Multicentric prospective longitudinal study. The ABR was carried out in the neonatal period in 96 newborn infants, 49 small for gestational age (SGA) and 47 appropriate for gestational age (AGA). Of these, 77 infants (39 SGA and 38 AGA) returned for a second evaluation. In the third evaluation, 70 infants (35 SGA and 35 AGA) returned. RESULTS: SGA and AGA did not present significant differences in the neonatal period and at three months of life. However, at six months, there was statistical significant difference between SGA and AGA groups for the latencies of wave III and interpeak I-III. Latencies of ABR waves decreased more rapidly in the first three months than the third to the sixth month of life for the SGA. AGA group showed progressive decrease in latency of ABR waves during the six months. CONCLUSION: The findings suggest that, for SGA infants, the maturational process of the auditory pathway occurs in different rate when compared to AGA infants. The SGA infants have faster maturation especially at the first three months of life, while in infants AGA, this process occurred in a constant and gradual way throughout the six months studied.
- Development and practical application of accelerated solvent extraction for the isolation of cocaine/crack biomarkers in meconium samples(2014) MANTOVANI, Cinthia de Carvalho; LIMA, Marcela Bittar; OLIVEIRA, Carolina Dizioli Rodrigues de; MENCK, Rafael de Almeida; DINIZ, Edna Maria de Albuquerque; YONAMINE, MauricioA method using accelerated solvent extraction (ASE) for the isolation of cocaine/crack biomarkers in meconium samples, followed by solid phase extraction (SPE) and the simultaneous quantification by gas chromatography-mass spectrometry (GC-MS) was developed and validated. Initially, meconium samples were submitted to an ASE procedure, which was followed by SPE with Bond Elut Certify I cartridges. The analytes were derivatizated with PFP/PFPA and analyzed by GC-MS. The limits of detection CLOD) were between 11 and 17 ng/g for all analytes. The limits of quantification (LOQ) were 30 ng/g for anhydroecgonine methyl ester, and 20 ng/g for cocaine, benzoylecgonine, ecgonine methyl ester and cocaethylene. Linearity ranged from the LOQ to 1500 ng/g for all analytes, with a coefficients of determination greater than 0.991, except for m-hydroxybenzoylecgonine, which was only qualitatively detected. Precision and accuracy were evaluated at three concentration levels. For all analytes, inter-assay precision ranged from 3.2 to 18.1%. and intra-assay precision did not exceed 12.7%. The accuracy results were between 84.5 and 114.2% and the average recovery ranged from 17 to 84%. The method was applied to 342 meconium samples randomly collected in the University Hospital University of Sao Paulo (HU-USP), Brazil. Cocaine biomarkers were detected in 19 samples, which represent 5.6% of exposure prevalence. Significantly lower birth weight, length and head circumference were found for the exposed newborns compared with the non-exposed group. This is the first report in which ASE was used as a sample preparation technique to extract cocaine biomarkers from a complex biological matrix such as meconium samples. The advantages of the developed method are the smaller demand for organic solvents and the minor sample handling, which allows a faster and accurate procedure, appropriate to confirm fetal exposure to cocaine/crack.