21 Hydroxylase Deficiency
Mostrando 1-12 de 62 artigos, teses e dissertações.
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1. Classic and current concepts in adrenal steroidogenesis: a reappraisal
ABSTRACT Adrenal steroid biosynthesis and its related pathology are constant evolving disciplines. In this paper, we review classic and current concepts of adrenal steroidogenesis, plus control mechanisms of steroid pathways, distribution of unique enzymes and cofactors, and major steroid families. We highlight the presence of a “mineralocorticoid (MC) pat
Archives of Endocrinology and Metabolism. Publicado em: 2022
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2. Cognitive functions in children with congenital adrenal hyperplasia
ABSTRACT Objective There is controversy regarding cognitive function in patients with congenital adrenal hyperplasia (CAH). This study is aimed at the assessment of cognitive functions in children with CAH, and their relation to hydrocortisone (HC) therapy and testosterone levels. Subjects and methods Thirty children with CAH due to 21 hydroxylase deficien
Arch. Endocrinol. Metab.. Publicado em: 25/04/2019
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3. Growth hormone deficiency with advanced bone age: phenotypic interaction between GHRH receptor and CYP21A2 mutations diagnosed by sanger and whole exome sequencing
SUMMARY Isolated growth hormone deficiency (IGHD) is the most common pituitary hormone deficiency and, clinically, patients have delayed bone age. High sequence similarity between CYP21A2 gene and CYP21A1P pseudogene poses difficulties for exome sequencing interpretation. A 7.5 year-old boy born to second-degree cousins presented with severe short stature (h
Arch. Endocrinol. Metab.. Publicado em: 2017-12
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4. Long-term follow-up of a female with congenital adrenal hyperplasia due to P450-oxidoreductase deficiency
SUMMARY P450 oxidoreductase deficiency (PORD) is a variant of congenital adrenal hyperplasia that is caused by POR gene mutations. The POR gene encodes a flavor protein that transfers electrons from nicotinamide adenine dinucleotide phosphate (NADPH) to all microsomal cytochrome P450 type II (including 21-hydroxylase, 17α-hydroxylase 17,20 lyase and aromata
Arch. Endocrinol. Metab.. Publicado em: 10/10/2016
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5. Cardiovascular risk factors and increased carotid intima-media thickness in young patients with congenital adrenal hyperplasia due to 21-hydroxylase deficiency
ABSTRACT Objective Increased arterial intima-media thickness has been observed in adults with congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency (21-OHD). CAH has also been associated with obesity, insulin resistance, and hypertension. The aim of the present study was to compare youths with CAH with healthy, normal-weight individuals, ev
Arch. Endocrinol. Metab.. Publicado em: 2015-12
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6. Mineralocorticoid replacement during infancy for salt wasting congenital adrenal hyperplasia due to 21-hydroxylase deficiency
OBJECTIVE: The protocols for glucocorticoid replacement in children with salt wasting 21-hydroxylase deficiency are well established; however, the current recommendation for mineralocorticoid replacement is general and suggests individualized dose adjustments. This study aims to retrospectively review the 9-∝-fludrocortisone dose regimen in salt wasting 21
Clinics. Publicado em: 2013
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7. Análise de genes moduladores do fenótipo de virilização genital em mulheres com a forma clássica da deficiência da 21-hidroxilase / Analysis of modulatory factors involved in the phenotype of external genitalia virilization in females with classical form of 21-hydroxylase deficiency
A hiperplasia adrenal congênita (HAC) por deficiência da enzima 21-hidroxilase (21OH) é uma doença autossômica recessiva que compromete a síntese de cortisol e/ou aldosterona. É a causa mais frequente de distúrbio da diferenciação sexual 46,XX. Apresenta uma diversidade fenotípica, a qual é decorrente de mutações no gene CYP21A2. Observa-se for
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/10/2012
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8. Avaliação da composição corporal em pacientes com a forma clássica da hiperplasia adrenal congênital por deficiência da enzima 21-hidroxilase / Assessment of body composition in patients with classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency
Objetivos: a) Validar equações com base nas espessuras de dobras cutâneas (EDC) para estimar o percentual de massa gorda (%MG) e na impedância bioelétrica (BIA) para a massa isenta de gordura (MIG) em pacientes com hiperplasia adrenal congênita por deficiência da enzima 21-hidroxilase (HAC-D21OH); b) desenvolver equações específicas para estes paci
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012
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9. Pharmacogenetics of glucocorticoid replacement could optimize the treatment of congenital adrenal hyperplasia due to 21-hydroxylase deficiency
INTRODUCTION: 21-hydroxylase deficiency is an autosomal recessive disorder that causes glucocorticoid deficiency and increased androgen production. Treatment is based on glucocorticoid replacement; however, interindividual variability in the glucocorticoid dose required to achieve adequate hormonal control has been observed. OBJECTIVE: The present study aime
Clinics. Publicado em: 2011
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10. Analise molecular do loco C4/CYP21 : impacto da variabilidade alelica provocada por recombinações sobre os metodos de avaliação de mutações / Molecular analysis of C4/CYP21 locus : influence of allelic variability caused by recombinations on current methods of mutation detection
Congenital adrenal hyperplasia is caused by deficiency of one of the five enzymes responsible for cortisol synthesis in the steroidogenesis. More than 90% of the cases occur due to deficiency of 21-hidroxilase (21-OH). The haploid human genome bears two copies in tandem of 21-OH coding gene, CYP21A2 and CYP21A1P. Although the two copies are approximately 98%
Publicado em: 2009
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11. Estudo da proteína P450 óxido-redutase e dos citocromos hepáticos 2C19 e 3A4 como possíveis moduladores do fenótipo da deficiência da 21-hidroxilase / Study of P450 oxidoreductase protein and hepatic cytochromes 2C19 and 3A4 as a potential modulatory factors in 21-hydroxylase deficiency phenotype
A deficiência da 21-hidroxilase é uma doença genética comum, causada por mutações no gene CYP21A2, que codifica a enzima 21-hidroxilase (P450c21). A deficiência da 21-hidroxilase afeta a síntese de cortisol e aldosterona e promove acúmulo de precursores, que são desviados para a síntese de andrógenos. Observa-se três principais fenótipos: a for
Publicado em: 2009
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12. CYP21 gene mutations in Brazilian patients with 21-hydroxylase deficiency from the Amazon region
Congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency (P450c21, CYP21) accounts for about 95% of all CAH cases. The incidence of CYP21 gene mutations has been extensively studied in the last years, but in Brazil it has been investigated only in Southeast Brazilian patients. This study is the first report on the distribution of CYP21 mutations
Genetics and Molecular Biology. Publicado em: 2008