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1.
Rev. méd. Paraná ; 77(1): 68-71, jan.-jun. 2019.
Article in Portuguese | LILACS-Express | LILACS | ID: biblio-1292317

ABSTRACT

Objetivo: descrever caso raro de concomitância de síndrome de Beckwith-Wiedemann e deficiência de cobalamina C. Relato: menina, 4 anos, 19,5kg, 1,17m. Nasceu de cesariana, com 39+5 semanas e 3660g. Diagnosticada onfalocele intra-útero, corrigida no período neonatal. Realizada detecção genética neonatal de síndrome de Beckwith-Wiedemann. Com 2 meses, apresentou crises de ausência, eletroencefalograma anormal e ressonância evidenciando coleções subdurais crônicas e diminuição de substância branca. Apresentou hiper-homocisteinemia e aumento de ácido metilmalônico, confirmando deficiência de cobalamina C. Com 6 meses, crises convulsivas mudaram de padrão, apresentou acidose metabólica e hemorragias retinianas. Com 2 anos, diagnosticado autismo. Apresenta tônus central diminuído, tônus periférico normal, déficit neuropsicomotor, deficiência visual, nistagmo, microcefalia leve, macroglossia e crescimento excessivo. Em uso de hidroxicobalamina, betaína e ácido fólico. Conclusão: relatamos a concomitância de condições raras, sendo as complicações mais graves os déficits visuais e neuropsicomotores pela deficiência de cobalamina C


Objective: To describe a case of a patient presenting concomitantly with Beckwith-Wiedemann syndrome and cobalamin C deficiency. Report: Girl, 4 years old, 19.5kg, 1.17m. Born from cesarean section, with 39+5 weeks of gestation and weighing 3,660g. Diagnosed intra-uterus with omphalocele, which was repaired in the neonatal period. Neonatal Beckwith-Wiedemann syndrome detection was performed by genetic testing. With 2 months of age, she presented absence seizures, with abnormal electroencephalogram and MRI, evidencing chronic subdural collections and white matter decrease. She presented hyperhomocysteinemia and increased methylmalonic acid, with a subsequent diagnosis of cobalamin C deficiency. At 6 months of age, her seizures changed pattern, she presented metabolic acidosis and superficial retinal haemorrhages. At 2 years of age, she was diagnosed with autism. She presents reduced central tone, normal peripheral tonus, preserved reflexes, neuropsychomotor deficit, visual deficiency, nystagmus, mild microcephaly, macroglossia and excessive growth. In use of hydroxocobalamin, betaine and folic acid. Conclusion: in the case presented, rare conditions occurred concomitantly, with the most severe complications including visual and neuropsychomotor deficits, due to cobalamin C deficiency

2.
Rev. méd. Minas Gerais ; 26(supl. 2): 31-34, 2016.
Article in Portuguese | LILACS | ID: biblio-882374

ABSTRACT

A fenilcetonúria, doença metabólica hereditária, autossômica recessiva, é a mais frequente das aminoacidopatias. Quando não diagnosticada e tratada precocemente, causa retardo mental grave. Os programas de triagem neonatal transformaram a histó- ria natural dessa doença, possibilitando o diagnóstico neonatal e a instituição imediata do tratamento dietético. Atualmente, os pacientes com controle adequado têm vida normal. Nas últimas décadas, alterações nutricionais têm sido relacionadas ao tratamento dietético e aos seus desvios, especialmente após a primeira década de vida. Neste artigo apresenta-se o caso de um adolescente que desenvolveu anemia megaloblástica por deficiente ingestão de vitamina B12 e uma revisão da literatura sobre o tema.(AU)


Phenylketonuria, inherited metabolic disease, autosomal recessive, is the most common of aminoacidopathies. If not diagnosed and treated early, causes severe mental retardation. The newborn screening programs have transformed the natural history of this disease, allowing the neonatal diagnosis and the immediate institution of dietary treatment. Currently, patients with adequate control have normal life. In recent decades, nutritional changes have been related to dietary treatment and its deviations, especially after the first decade of life. In this article we present the case of a teenager who developed megaloblastic anemia due to poor intake of vitamin B12 and a literature review on the topic(AU)


Subject(s)
Humans , Male , Adolescent , Phenylketonurias/diet therapy , Vitamin B 12 Deficiency , Anemia, Megaloblastic/complications , Phenylalanine , Phenylketonurias/complications , Nutrition Therapy , Amino Acid Metabolism, Inborn Errors/complications
3.
Med. U.P.B ; 32(2): 171-177, jul.-dic. 2013.
Article in Spanish | LILACS, COLNAL | ID: biblio-836880

ABSTRACT

RESUMENLa combinación de la Aciduria etilmalónica y la homocistinuria son desórdenes del metabolismo heredados con un amplio espectro de manifestaciones clínicas que se pueden presentar desde la infancia hasta los adultos mayores. Sin embargo, con la detección temprana de estas enfermedades, en el periodo neonatal, se tendría la oportunidad de mejorar la calidad de vida de los pacientes afectados.


The impact of genomics in clinical medicine has been significant in recent years. Up to 2012, more than 3,000 genetic conditions have been implicated in clinical medicine. Today, with the new methodology of genome sequencing (next-generation sequencing (NGS) and comparative genomic sequencing (CGH), Mendelian conditions have been identified, as well as their role in genetic variations and polygenetic multifactorial disorders that affect the clinical prognosis and response to treatment.The integration of these diagnostic approaches in clinical practice requires an understanding of the basic principles of heredity, genome organization and molecular genetics. Generally, these conditions are single-gene disorders (also known as monogenic disorders), meaning that a single gene mutation is responsible for the disease.The genetic screening test analyzes hundreds of mutations for recessive genetic diseases. This test informs whether or not such mutations are present, which may lead to large-scale genotyping in children using multiple molecular probes.We report two cases of young adult women with symptoms and multiple medical consultations with disease recurrence and uncertain diagnosis, who underwent genetic testing and were determined to be carriers of heterozygous and homozygous mutant ethylmalonic aciduria and methylenetetrahydrofolate reductase deficiency, which could be responsible, in part, for their confusing symptoms.


A combinação da Aciduria etilmalónica e a homocistinuria são desordens do metabolismo herdados com um amplo espectro de manifestações clínicas que se podem apresentar desde a infância até os adultos maiores. No entanto, com a detecção precose destas doenças, no período neonatal, se teria a oportunidade de melhorar a qualidade de vida dos pacientes afetados.


Subject(s)
Humans , Adolescent , Adult , Methylenetetrahydrofolate Reductase (NADPH2) , Genetic Variation , Galactosemias , Amino Acid Metabolism, Inborn Errors , Genetic Diseases, Inborn , Molecular Biology
4.
Sci. med ; 22(2): 64-70, abr-jun. 2012.
Article in Portuguese | LILACS | ID: lil-661317

ABSTRACT

Objetivos: Caracterizar o perfil genético-clínico de pacientes com fenilcetonúria em Alagoas, diagnosticados e acompanhados pelo Programa Nacional de Triagem Neonatal.Métodos: Pacientes com fenilcetonúria, assistidos pelo Serviço de Referência em Triagem Neonatal de Alagoas, foram submetidos a coleta de sangue para rastrear mutações genéticas determinantes da variação fenotípica da doença. Concomitantemente, os pacientes ou seus responsáveis responderam a um questionário padronizado para coleta de dados clínicos e epidemiológicos.Resultados: Foram acompanhados 20 pacientes, sendo 14 do sexo masculino e seis do sexo feminino, pertencentes a 18 famílias. A idade dos pacientes estudados variou de 3 a 31 anos. Houve consanguinidade parental em 3/18 famílias; recorrência familial 3/18; 3/20 tiveram diagnóstico tardio; 2/20 interromperam temporariamente o tratamento; 1/20 não aderiu ao tratamento; e 6/20 apresentam manifestações clínicas. A análise das mutações foi concluída em 15/20 pacientes. As mutações encontradas no gene da fenilalanina hidroxilase foram: R261Q-homozigose (2 pacientes); V388M/I65T (1); R270K/V388M (1); I65T/L348V (1); IVS10nt11G>A-homozigose (2); V388M/R252W (1); R261Q/I65T (1); IVS10nt11G>A/R252W (1); V388M/IVS10nt11G>A (3); R261Q/R252W (1); R261Q/V388M (1).Conclusões: O genótipo V388M/IVS10nt11G>A foi o mais prevalente. Trinta por cento dos pacientes foram sintomáticos, provavelmente pela natureza das mutações, não adesão ao tratamento, tratamento inadequado e/ou diagnóstico tardio.


Aims: Characterizing the genetic/clinical profile of patients diagnosed with Phenylketonuria in Alagoas, monitored by the National Program of Newborn Screening. Methods: Patients with phenylketonuria, assisted by the Reference Center for Neonatal Screening of Alagoas , underwent blood sampling for detecting genetic determinants for the phenotypic variability of the disease. Concomitantly, patients or their guardians answered a standardized questionnaire for collection of clinical and epidemiological data. Results: Twenty patients (14 males and 6 females), belonging to 18 families, were monitored. Age ranged from 3-31 (mean age 10.35).We found parental consanguinity in 3/18 families; familial recurrence was 3/18; 3/20 had late diagnosis; 2/20 interrupted treatment for some time; 1/20 did not adhere to treatment; and 6/20 had clinical manifestations. Analysis of mutations was concluded in 15/20 patients. Mutations found in the phenylalanine hydroxylase gene were: R261Q-homozygous (2 patients); V388M/I65T (1); R270K/V388M (1); I65T/L348V (1); IVS10nt11G>A-homozygous(2); V388M/R252W (1); R261Q/I65T (1); IVS10nt11G>A/R252W (1); V388M/IVS10nt11G>A (3); R261Q/R252W (1); R261Q/V388M (1).


Subject(s)
Intellectual Disability , Amino Acid Metabolism, Inborn Errors , Phenylalanine Hydroxylase , Phenylketonurias , Phenotype , Genotype , Mutation , Prognosis , Neonatal Screening
5.
Rev. AMRIGS ; 56(1): 17-21, jan.-mar. 2012. tab
Article in Portuguese | LILACS | ID: lil-647286

ABSTRACT

Introdução: A Fenilcetonúria Clássica é causada pela deficiência da enzima hepática fenilalaninahidroxilase. Se não diagnosticada e tratada precocemente, causa retardo mental. O objetivo deste estudo foi identificar indivíduos submetidos à triagem neonatal no Rio Grande do Sul entre 1986 e 2003, com teste positivo para hiperfenilalaninemia, estimar a prevalência de hiperfenilalaninemias, verificar níveis de controle e correlacionar os anos de realização do teste, início do tratamento, evolução e quadro clínico. Métodos: Casos de hiperfenilalaninemia foram identificados nos laboratórios e clínicas de tratamento. Foi aplicado questionário, contendo variáveis demográficas e sobre a patologia, o desenvolvimento infantil, a escolaridade, o aconselhamento genético e o rastreamento neonatal. Foram avaliados pacientes entre 6 meses e 16 anos de idade. Na análise estatística, utilizou-se o teste do qui-quadrado e ANOVA para avaliar a associação entre ano do diagnóstico e controle de fenilalanina e regressão logística para avaliar o efeito conjunto de idade do diagnóstico e controle de fenilalanina sobre o atraso no desenvolvimento. Resultados: De 1986 a 2003, 418 crianças apresentaram teste positivo para fenilalanina. Destes, 351 (84,0%) apresentaram resultados normais na segunda amostra, 58 (13,9%) foram considerados portadores de hiperfenilalaninemia e 9 (2,1%) tiveram o seguimento perdido. A cobertura do programa foi de 50%. Sobre o aconselhamento genético, 39 entrevistados (72,2%) responderam não saber, não lembrar ou deram respostas incorretas. Conclusão: Não se observou tendência histórica do diagnóstico ter se tornado mais precoce ou do controle laboratorial ter se tornado melhor. O controle bioquímico da fenilalanina não dependeu da precocidade do diagnóstico e sim, da idade dos pacientes.


Introduction: Classical phenylketonuria is caused by deficiency of the hepatic enzyme phenylalanine hydroxylase. If not diagnosed and treated early, it causes mental retardation. The aim of this study was to identify patients who underwent neonatal screening in Rio Grande do Sul between 1986 and 2003 and tested positive for hyperphenylalaninemia, to estimate the prevalence of hyperphenyl-alaninaemias, to check the levels of control, and to correlate the years of testing, initiation of treatment, evolution and clinical picture. Methods: Cases of hyperphenylalaninemia were identified in laboratories and treatment clinics. A questionnaire was administered containing demographic variables and about the pathology, child development, education, genetic counseling and neonatal screening. We evaluated patients between 6 months and 16 years of age. The statistical analysis used the chi-square test and ANOVA to assess the association between year of diagnosis and control of phenylalanine and logistic regression to assess the combined effect of age at diagnosis and control of phenylalanine on the developmental delay. Results: From 1986 to 2003, 418 children tested positive for phenylalanine. Of these, 351 (84.0%) had normal results in the second sample, 58 (13.9%) were considered with hyperphenylalaninemia, and 9 (2.1%) were lost for follow-up . The coverage of the program was 50%. Concerning genetic counseling, 39 respondents (72.2%) reported not knowing, not remembering or gave incorrect answers. Conclusion: There was no historical trend of diagnosis having become earlier or of laboratory control having improved. The biochemical control of phenylalanine was dependent on patient age rather than on early diagnosis.


Subject(s)
Humans , Male , Female , Infant, Newborn , Infant , Child, Preschool , Child , Adolescent , Phenylalanine Hydroxylase/deficiency , Phenylalanine Hydroxylase/metabolism , Fetal Mortality , Neonatal Screening , Cohort Studies , Risk Factors , Phenylketonurias/diagnosis , Phenylketonurias/epidemiology
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