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1.
Clinics ; 77: 100082, 2022. tab, graf
Article in English | LILACS-Express | LILACS | ID: biblio-1404298

ABSTRACT

Abstract Background: Mucopolysaccharidosis type II, also known as Hunter syndrome, is a rare X-linked recessive disorder caused by deficiency of the lysosomal enzyme Iduronate-2- Sulfatase (IDS), leading to progressive accumulation of Glycosaminoglycans (GAGs) in several organs. Over the years, Enzyme Replacement Therapy (ERT) has provided significant benefits for patients, retarding the natural progression of the disease. Results: The authors evaluated 17 patients from the same family with a mild form of MPS type II; the proband had developed acute decompensated heart failure refractory to clinical measurements at 23 years and needed a rather urgent heart transplant; however, he died from surgical complications shortly after the procedure. Nevertheless, subsequent to his tragic death, 16 affected male relatives were detected after biochemical tests identifying the low or absent activity of the IDS enzyme and confirmed by molecular analysis of the IDS gene. Following diagnosis, different options of treatment were chosen: 6 patients started ERT with Elaprase® (Idursulfase) soon after, while the other 10 remained without ERT. Eventually, 4 patients in the latter group began ERT with Hunterase® (Idursulfase Beta). None presented adverse effects to either form of the enzyme. Among the 6 individuals without any ERT, two died of natural causes, after reaching 70 years. Despite the variable phenotype within the same family (mainly heart dysfunctions and carpal tunnel syndrome), all 14 remaining patients were alive with an independent lifestyle. Conclusion: Here, the authors report the variable progress of the disease with and without ERT in a large Brazilian family with a slowly progressive form of MPS II, harboring the same missense variant in the IDS gene.

2.
Arq. neuropsiquiatr ; 79(11): 950-956, Nov. 2021. tab
Article in English | LILACS | ID: biblio-1350128

ABSTRACT

ABSTRACT Background: Williams-Beuren syndrome is a multisystemic disorder caused by a microdeletion of the 7q11.23 region. Although familial cases with autosomal dominant inheritance have been reported, the vast majority are sporadic. Objective: To investigate the main complaints and clinical findings of patients with Williams-Beuren syndrome. Methods: A total of 757 parents of patients registered in the Brazilian Association of Williams-Beuren Syndrome (ABSW) received a questionnaire via WhatsApp from March to July 2017. Results: In total, 229 parents answered the survey. Age of diagnosis ranged from 2 days to 34 years (median: 3 years). The main clinical findings reported by the parents were abdominal colic (83.3%), failure to thrive (71.5%), feeding difficulty in the first year (68.9%), otitis (56.6%), urinary tract infections (31.9%), precocious puberty (27.1%) and scoliosis (15.9%). Cardiac defects were present in 66% of patients, and the most frequent defect was supravalvular aortic stenosis (36%). Arterial hypertension was reported in 23%. Hypercalcemia was reported in 10.5% of patients, mainly during the first year of life. Hyperacusis and hypersociability were common complaints (both present in 89%). Other behavioral and neuropsychiatric symptoms reported by the parents included attention deficit (89%), anger crises (83%), excessive fear (66%), depression (64%), anxiety (67%) and hypersexuality (33%). The most common complaints were hypersensitivity to sounds, talkative personality, emotional dependence and learning difficulties. In 98.3%, the parents denied family history. Conclusions: Williams-Beuren syndrome requires close follow-up with different medical specialties due to their variable clinical comorbidities, including language and school learning difficulties, behavioral and psychiatric problems.


RESUMO Antecedentes: A síndrome de Williams-Beauren é doença de acometimento multisistêmico causado pela microdeleção da região 7q11.23. Apesar de haver casos familiares com herança autossômica dominante, a grande maioria dos casos é esporádica. Objetivo: Investigar as principais queixas e achados clínicos da síndrome. Métodos: 757 pais de pacientes inscritos na Associação Brasileira de Síndrome de Williams-Beuren (ABSW) receberam um questionário pelo WhatsApp, entre março e julho de 2017. Resultados: 229 pais de pacientes responderam à pesquisa. A idade de diagnóstico variou de 2 dias até 34 anos (mediana: 3 anos). Os principais achados reportados pelos pais: cólicas abdominais (83,3%), deficiência ponderoestatural (71,5%), dificuldade de alimentação no primeiro ano (68,9%), otite (56,6%), infecções do trato urinário (31,9%), puberdade precoce (27,1%) e escoliose (15,9%). Cardiopatias estavam presentes em 66%, sendo que a mais frequente era a estenose pulmonar supravalvar (36%). Hipertensão arterial foi reportada em 23%. Hipercalcemia foi reportada em 10,5%, principalmente no primeiro ano de vida. Hiperacusia e hiperssociabilidade foram achados comuns (89%). Os principais achados comportamentais e psiquiátricos reportados pelos pais foram: déficit de atenção (89%), crises de raiva (83%), medo excessivo (66%), depressão (64%), ansiedade (67%) e hiperssexualidade (33%). As queixas principais referidas foram hipersensibilidade a sons, personalidade excessivamente amigável, dependência emocional e dificuldades escolares. Em 98,3% dos casos os pais negaram história familial. Conclusões: A síndrome de Williams-Beuren é requer um seguimento e manejo estritos, com diferentes especialidades médicas devido às comorbidades clínicas variadas, que incluem dificuldades de linguagem e aprendizagem escolar, além de dificuldades comportamentais e psiquiátricas.


Subject(s)
Humans , Child, Preschool , Williams Syndrome/epidemiology , Aortic Stenosis, Supravalvular , Brazil , Surveys and Questionnaires
3.
Rev. Assoc. Med. Bras. (1992) ; 64(8): 723-728, Aug. 2018. tab, graf
Article in English | LILACS | ID: biblio-976850

ABSTRACT

SUMMARY AIM To describe the incidence, diagnosis, and management of systemic arterial hypertension related to renal artery stenosis in patients with Williams-Beuren syndrome. METHODS Sixty-five patients with Williams-Beuren syndrome were evaluated for hypertension. Enrolled patients underwent Doppler sonography of the renal arteries and Doppler echocardiography. Those with Doppler sonography-detected lesions or with normal Doppler sonography but severe hypertension underwent computed tomography or gadolinium-enhanced magnetic resonance angiography of the aorta and renal vessels. Patients needing vascular therapeutic intervention underwent conventional angiography. RESULTS Systemic arterial hypertension was diagnosed in 21/65 patients with Williams-Beuren syndrome (32%; 13 male) with a mean age of 13.9 years (5mo-20yrs). In 8/21 patients renovascular hypertension was detected. Angioplasty was unsuccessful in five patients with renal artery stenosis, requiring additional treatment. Doppler echocardiography showed cardiac abnormalities in 16/21 (76%) hypertensive patients. CONCLUSION Cardiac abnormalities and hypertension in patients with Williams-Beuren syndrome are common. Thus, thorough evaluation and follow-up are necessary to reduce cardiovascular risks and mortality of these patients


RESUMO OBJETIVO Descrever a incidência, o diagnóstico e o tratamento da hipertensão arterial sistêmica relacionada com estenose da artéria renal em pacientes com síndrome de Williams-Beuren. MÉTODOS Sessenta e cinco pacientes com síndrome de Williams-Beuren foram avaliados quanto à presença de hipertensão. Os pacientes foram submetidos à ultrassonografia com Doppler das artérias renais e ecocardiograma Doppler. Aqueles com suspeita de hipertensão renovascular foram submetidos à tomografia computadorizada ou angiografia por ressonância magnética da aorta e vasos renais ou angiografia convencional. RESULTADOS A hipertensão arterial sistêmica foi diagnosticada em 21/65 pacientes com síndrome de Williams-Beuren (32%, 13 do sexo masculino), com idade média de 13,9 anos (5 meses-20 anos). Em 8/21 pacientes foi detectada a hipertensão renovascular. Angioplastia não teve sucesso em cinco pacientes com estenose da artéria renal, necessitando de tratamento adicional. O ecocardiograma Doppler mostrou anormalidades cardíacas em 16/21 (76%) pacientes hipertensos. CONCLUSÃO As anormalidades cardíacas e hipertensão arterial em pacientes com síndrome de Williams-Beuren são muito frequentes, sendo necessários uma avaliação minuciosa e seguimento para diminuir o risco cardiovascular e a morbimortalidade desses pacientes


Subject(s)
Humans , Male , Female , Infant , Child, Preschool , Child , Adolescent , Adult , Young Adult , Renal Artery Obstruction/complications , Williams Syndrome/complications , Hypertension/etiology , Renal Artery Obstruction/epidemiology , Renal Artery Obstruction/diagnostic imaging , Brazil/epidemiology , Echocardiography, Doppler , Incidence , Prospective Studies , Ultrasonography, Doppler , Magnetic Resonance Angiography , Williams Syndrome/epidemiology , Williams Syndrome/diagnostic imaging , Hypertension/epidemiology , Hypertension/diagnostic imaging
4.
Rev. Assoc. Med. Bras. (1992) ; 62(3): 202-206, May-June 2016. tab
Article in English | LILACS | ID: lil-784311

ABSTRACT

SUMMARY Objective: To describe the most prominent clinical features of a cohort of patients with oculo-auriculo-vertebral (OAV) dysplasia in Brazil. Method: A review of medical records of patients with diagnosis of OAV from 1990 to 2010 was performed in a medical genetics center. Results: 41 patients were included in the study. Their average age at diagnosis was 2y 10mo (34,4±48,8 months) and the female proportion was 53.7%. Mean maternal age at patient’s birth was 28.5y (min: 17, max: 46y) for mothers and 31.4y (min: 21, max: 51y) for fathers. Most patients (97.5%) had auricular involvement, with facial manifestation in 90.2%, spinal in 65.9%, ocular in 53.7%, 36.6% with cardiovascular involvement, 29.3% urogenital, and 17% of the cases with central nervous system (CNS) involvement. The classic OAV triad was present in only 34%. All patients except one had concomitant problems in other organs or systems. Conclusion: Since the diagnosis of OAV dysplasia relies only on a comprehensive medical evaluation, it is imperative that clinicians be aware of the most common presentation of the syndrome. Once suspected, every patient should undergo a complete medical evaluation of multiple systems including complementary exams. Treatment of these patients is based on surgical correction of malformations and rehabilitation.


RESUMO Objetivo: descrever os principais achados clínicos de uma coorte de pacientes com a displasia óculo-aurículo-vertebral (OAV). Método: revisão de prontuários médicos dos pacientes com diagnóstico de OAV no período de 1990 a 2010, acompanhados em um centro de genética médica. Resultados: foram incluídos no estudo 41 pacientes. A média de idade ao diagnóstico foi de 2 anos e 10 meses (34,4±48,8 meses) e a proporção de pacientes do sexo feminino foi de 53,7%. A média de idade dos pais ao nascimento do paciente foi de 28,5±6,9 anos para as mães e 31,4±7,4 anos para os pais. A maioria dos indivíduos (97,5%) possuía acometimento auricular, 90,2% tinham manifestações faciais, 65,9%, vertebrais, 53,7%, oculares, 36,6%, cardiovasculares, 29,3%, urogenitais e 17%, no sistema nervoso central. Além disso, 34% dos pacientes apresentavam a tríade clássica óculo-aurículo-vertebral, e todos os pacientes exceto um apresentavam concomitantemente problemas em outros órgãos ou sistemas. Conclusão: já que o diagnóstico desta entidade é eminentemente clínico, é imprescindível que os médicos das mais diversas especialidades conheçam os achados mais frequentes na OAV. Diante de um paciente com suspeita diagnóstica, deve ser realizada avaliação detalhada de outros órgãos, tanto clínica como por meio de exames complementares. O tratamento é baseado na correção cirúrgica das malformações e na reabilitação.


Subject(s)
Humans , Male , Female , Goldenhar Syndrome/pathology , Goldenhar Syndrome/epidemiology , Spine/abnormalities , Brazil/epidemiology , Eye Abnormalities , Medical Records , Retrospective Studies , Sex Distribution , Ear/abnormalities , Face/abnormalities , Goldenhar Syndrome/physiopathology
5.
Psicol. teor. prát ; 18(1): 178-193, abr. 2016.
Article in Portuguese | LILACS | ID: lil-791822

ABSTRACT

A síndrome de Williams (SW) é uma desordem genética causada pela deleção de múltiplos genes no cromossomo 7. Evidências clínicas alertam para indicadores de prejuízos socioemocionais compatíveis com Transtorno do Espectro Autista (TEA). O objetivo do estudo foi identificar indicadores socioemocionais e comportamentais compatíveis com autismo em pessoas com SW. A amostra foi composta por 30 indivíduos com diagnóstico de SW e 22 com TEA. Os instrumentos de coleta de dados foram Inventário de Comportamentos Autísticos (Autism Behavior Checklist – ABC); e Questionário de Avaliação de Autismo (Autism Screening Questionnaire – ASQ), respondidos pelos respectivos cuidadores. Foi conduzida uma análise discriminante (modelo Step Wise) para diferenciação dos grupos a partir dos itens dos inventários ABC e ASQ. O grupo de pessoas com SW apresentou um número expressivo de sinais de alterações socioemocionais, comunicativas e de comportamento compatíveis com Autismo que predominaram na fase dos quatro a cinco anos de idade.


Williams Syndrome (WS) is a genetic disorder caused by the deletion of multiple genes on chromosome 7. Clinical evidence points to socio‑emotional alterations compatible with Autism Spectrum Disorder (ASD). The goal of this study was to identify socio‑emotional and behavioral signs compatible with ASD in individuals with WS. The sample consisted of 30 individuals with WS and 22 with ASD. The data collection instruments were Autism Behavior Checklist (ABC); and Autism Screening Questionnaire (ASQ) that were answered by the caregivers. We conducted a discriminant analysis (Step Wise) to differentiate the groups from items of the ABC and ASQ inventories. The WS group showed a large number of signs of socio‑emotional, communicative and behavioral alterations compatible with Autism that prevailed at the age of four to five years.


El Síndrome de Williams (SW) es una enfermedad genética causada por la delección de múltiplos genes en el cromosoma 7. Evidencias clínicas alertan para indicadores de afectaciones socio‑emocionales compatibles con Trastorno del Espectro del Autismo (TEA). El objetivo del estudio fue identificar indicadores socio‑emocionales y conductuales compatibles con Autismo en personas con SW. La muestra fue compuesta por 30 individuos con diagnóstico de SW y 22 con TEA. Los instrumentos de colecta de datos fueron Inventario de Conductas Autisticos (Autism Behavior Checklist – ABC); y Cuestionario de Conducta y Comunicación Social (Autism Screening Questionnaire – ASQ), respondidos por los respectivos cuidadores. Fue conducido un análisis discriminante (modelo Step Wise) para diferenciación de los grupos a partir de los itens de los inventarios ABC y ASQ. El grupo de personas con SW presentó un número expresivo de señales de alteraciones socio‑emocionales, comunicativas y de conducta compatibles con Autismo que predominaron en la fase de los cuatro a cinco años de edad.


Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Williams Syndrome , Autism Spectrum Disorder , Mass Screening , Growth and Development
6.
Rev. Assoc. Med. Bras. (1992) ; 61(5): 407-410, Sept.-Oct. 2015. graf
Article in English | LILACS | ID: lil-766263

ABSTRACT

Summary Menkes disease is a congenital disorder caused by changes in copper metabolism derived from mutations in the ATP7A gene. It is characterized by physical and neurological alterations. In the neonatal period, these alterations can be nonspecific, which makes early diagnosis a challenge. Diagnosis can be suspected when there are low levels of ceruloplasmin and serum copper. Molecular analysis confirms the diagnosis. Treatment is parenteral administration of copper histidine. We report a familial case with molecular confirmation. The proband had clinical and biochemical suspicious. Treatment with copper histidine was indicated, but initiated at the age of 2 months and 27 days only. He did not present improvements and died at 6 months. The mother became pregnant again, a male fetus was identified and copper histidine was manufactured during pregnancy. He was born healthy, biochemical markers were reduced and treatment was indicated. Molecular analysis was performed confirming mutation in both the mother and the proband, while the other son did not have mutation, so treatment was discontinued. We support the clinical relevance of molecular confirmation for the correct diagnosis and genetic counseling, once clinical findings in the neonatal period are nonspecific and early treatment with parenteral copper histidine must be indicated.


Resumo A doença de Menkes é causada por uma alteração genética no metabolismo do cobre, por mutações no gene ATP7A. Caracteriza-se por alterações neurológicas e no exame físico. No período neonatal, essas alterações podem ser inespecíficas, o que torna o diagnóstico precoce um desafio. O diagnóstico pode ser suspeitado quando há baixos níveis séricos de cobre e ceruloplasmina. A análise molecular confirma o diagnóstico, e o tratamento deve ser feito com histidina de cobre. Nós relatamos um caso familial de doença de Menkes. O probando apresentava quadro clínico e alterações bioquímicas compatíveis com a doença de Menkes, em consulta com 1 mês de vida. O tratamento foi indicado, mas apenas iniciado com 2 meses e 27 dias. Ele não apresentou melhora clínica e veio a óbito com 6 meses. A mãe teve uma nova gestação, foi identificado um feto do sexo masculino e foi solicitada a manipulação da histidina de cobre ainda durante a gestação. O bebê nasceu saudável, os marcadores bioquímicos estavam diminuídos e o tratamento com histidina de cobre foi indicado. Realizamos a análise molecular, que confirmou mutação no gene ATP7A na mãe e no probando; porém, o outro filho não apresentava mutação e o tratamento foi interrompido. Nós defendemos a importância clínica da confirmação molecular para o correto diagnóstico e o aconselhamento genético da doença de Menkes, uma vez que os achados clínicos e as alterações bioquímicas no período neonatal são inespecíficos, e o tratamento com histidina de cobre parenteral deve ser rapidamente instituído.


Subject(s)
Female , Humans , Infant, Newborn , Male , Pregnancy , Histidine/analogs & derivatives , Menkes Kinky Hair Syndrome/genetics , Molecular Diagnostic Techniques/methods , Organometallic Compounds/therapeutic use , Adenosine Triphosphatases/genetics , Cation Transport Proteins/genetics , Ceruloplasmin/analysis , Copper/analysis , Fatal Outcome , Hair Diseases/diagnosis , Histidine/therapeutic use , Menkes Kinky Hair Syndrome/diagnosis , Menkes Kinky Hair Syndrome/drug therapy
7.
Psicol. esc. educ ; 17(1): 105-112, jun. 2013. graf, tab
Article in Portuguese | LILACS | ID: lil-680829

ABSTRACT

Síndrome de Williams-Beuren é uma doença de múltiplos órgãos causada por microdeleção de 25 genes no cromossomo 7 (q11.23), sugerindo uma vulnerabilidade ao estresse. Objetivamos determinar se crianças e adolescentes com síndrome de Williams-Beuren apresentam níveis elevados de estresse. Avaliamos 40 indivíduos em idade escolar, com diagnóstico de síndrome de Williams-Beuren e grupo controle. Os instrumentos utilizados: Escala de Estresse Infantil (ESI), Escala de Inteligência para Crianças (WISC), Escala de Inteligência para Adultos (WAIS) e um questionário semiestruturado. No grupo com o SWB, 50% tinham altos níveis de estresse em comparação com 28,6% no grupo controle, diferença altamente significativa estatisticamente (p <0,001). De escola de inclusão, 40,7% apresentaram maior estresse; de escola especial, 69,2% (p> 0,140). Indivíduos com síndrome de Williams mostram índice elevado de estresse. Este estudo destaca a necessidade de orientação sobre a síndrome a pais e gestão escolar, com foco na redução de possíveis fatores ambientais estressantes.


Williams-Beuren syndrome is a multiorgan disease caused by microdeletion of 25 genes on chromosome 7 (q11.23), suggesting a vulnerability to stress. In this study we aim to determine whether children and adolescents with Williams-Beuren syndrome have high levels of stress. We studied 40 subjects of school age, with confirmed diagnosis of Williams-Beuren syndrome and control group. The instruments used: Child Stress Scale (ESI), Intelligence Scale for Children (WISC), Adult Intelligence Scale (WAIS), and a questionnaire semi-estructured. In the group with SWB, 50% had high levels of stress compared with 28.6% in the control group, statistically highly significant difference (p <0.001). In Inclusion school, 40.7% revealed higher stress; special school 69.2% (p> 0,140) difference was not statistically significant. Individuals with Williams syndrome show high level of stress. This study highlights the need for guidance about the syndrome to parents and school management, with focus on reducing of possible environmental stressors factors.


El Síndrome de Williams-Beuren es una enfermedad de múltiplos órganos causada por microdeleción de 25 genes en el cromosoma 7 (q11.23) sugiriendo una vulnerabilidad al estrés. El objetivo del estudio fue determinar si niños y adolescentes con síndrome de Williams-Beuren presentan niveles elevados de estrés. Evaluamos 40 individuos en edad escolar con diagnóstico de síndrome de Williams-Beuren y grupo control. Los instrumentos utilizados: Escala de Estrés Infantil (ESI), Escala de Inteligencia para niños (WISC), Escala de Inteligencia para Adultos (WAIS) y un cuestionario semi-estructurado. En el grupo con el SWB 50% tenían altos niveles de estrés en comparación con 28,6% en el grupo control, diferencia altamente significativa estadísticamente (p <0,001). De la escuela de inclusión 40,7% presentaron mayor estrés; de la escuela especial 69,2% (p> 0,140). Individuos con Síndrome de Williams muestran índice elevado de estrés. Este estudio destaca la necesidad de orientación sobre el síndrome a padres y gestión escolar con enfoque en la reducción de posibles factores ambientales estresantes.


Subject(s)
Child , Adolescent , Child , Adolescent , Williams Syndrome
8.
São Paulo; s.n; 2012. [122] p. ilus, tab.
Thesis in Portuguese | LILACS | ID: lil-655452

ABSTRACT

INTRODUÇÃO: A síndrome de Williams-Beuren (SWB) é uma doença genética causada por uma microdeleção na região 7q11.23 e caracterizada por dismorfismos faciais típicos, deficiência intelectual, comportamento hipersociável, cardiopatia congênita, principalmente a estenose aórtica supravalvar (EASV), e outras malformações variáveis. MÉTODOS: Foram avaliados 65 pacientes (40 do sexo masculino, 25 do sexo feminino), com idades entre 2 e 59 anos (mediana = 14 anos), com características clínicas sugestivas de SWB. Todos os pacientes eram filhos de pais normais. A técnica de Multiplex Ligation-dependent Probe Amplification® (MLPA®) foi usada com kit específico com sondas da região da SWB (MRC Holland). As sondas foram hibridadas ao DNA e os fragmentos ligados foram amplificados por PCR e analisados com software específico. RESULTADOS: A deleção de todas as sondas da região 7q11.23 testadas foi detectada por MLPA® em 55/65 pacientes. Um caso de deleção atípica, ou seja, menor que 1,5 Mb, foi observada em um paciente com quadro clínico parcial da síndrome. Os nove pacientes sem deleção tinham um diagnóstico clínico duvidoso da SWB. Dois pacientes tiveram MLPA® positivo para SWB embora apresentassem resultados de FISH negativos...


INTRODUCTION: Williams-Beuren syndrome (WBS) is a genetic disorder caused by a microdeletion in 7q11.23 region. It is characterized by typical facial dysmorphisms, mental retardation, hipersociable behavior, congenital heart disease, mainly supravalvular aortic stenosis (SVAS), and other variable congenital malformations. METHODS: 65 patients (40 males, 25 females), aged 2-59 years old (median = 14 years old), with clinical characteristics suggesting WBS, were evaluated. All patients had normal parents. Multiplex Ligation-dependent Probe Amplification® (MLPA®) was performed with a kit with probes in WBS region (MRC Holland). The probes were hybridized to the DNA and the ligated fragments were amplified by PCR and analyzed with specific software. RESULTS: The deletion for all tested probes in the 7q11.23 region was detected by MLPA® in 55/65 patients. One case of atypical deletion, smaller than 1.5 Mb, was observed in one patient with partial clinical picture of the syndrome. The nine patients without the deletion did not have a definitive clinical diagnosis of WBS. Two patients had positive MLPA® results even though they had negative FISH for WBS...


Subject(s)
Humans , Male , Female , Child , Adolescent , Young Adult , Middle Aged , Aortic Stenosis, Supravalvular , Elastin , Molecular Biology , Williams Syndrome
9.
Clinics ; 66(6): 959-964, 2011. ilus, tab
Article in English | LILACS | ID: lil-594362

ABSTRACT

INTRODUCTION: Williams-Beuren syndrome (WBS; OMIM 194050) is caused by a hemizygous contiguous gene microdeletion at 7q11.23. Supravalvular aortic stenosis, mental retardation, overfriendliness, and ocular and renal abnormalities comprise typical symptoms in WBS. Although fluorescence in situ hybridization is widely used for diagnostic confirmation, microsatellite DNA markers are considered highly informative and easily manageable. OBJECTIVES: This study aimed to test the microsatellite markers for the diagnosis of Williams-Beuren syndrome, to determine the size and parental origin of microdeletion, compare the clinical characteristics between patients with different sizes of the deletion and parental origin. METHODS: We studied 97 patients with clinical diagnosis of Williams-Beuren syndrome using five microsatellite markers: D7S1870, D7S489, D7S613, D7S2476 and D7S489_A. RESULTS AND DISCUSSION: Using five markers together, the result was informative in all patients. The most informative marker was D7S1870 (78.4 percent), followed by D7S613 (75.3 percent), D7S489 (70.1 percent) and D7S2476 (62.9 percent). The microdeletion was present in 84 (86.6 percent) patients and absent in 13 (13.4 percent) patients. Maternal deletions were found in 52.4 percent of patients and paternal deletions in 47.6 percent of patients. The observed size of deletions was 1.55 Mb in 76/ 84 patients (90.5 percent) and 1.84 Mb in 8/84 patients (9.5 percent). SVAS as well as ocular and urinary abnormalities were more frequent in the patients with a deletion. There were no clinical differences in relation to either the size or parental origin of the deletion. CONCLUSION: Using these five selected microsatellite markers was informative in all patients, thus can be considered an alternative method for molecular diagnosis in Williams-Beuren syndrome.


Subject(s)
Adolescent , Child , Child, Preschool , Female , Humans , Infant , Male , /genetics , Gene Deletion , Microsatellite Repeats , Williams Syndrome/genetics , Genetic Association Studies , Genetic Markers , In Situ Hybridization, Fluorescence , Polymerase Chain Reaction , Polymorphism, Genetic , Reproducibility of Results , Williams Syndrome/diagnosis
10.
Pediatria (Säo Paulo) ; 33(2): 81-88, 2011. tab
Article in English | LILACS | ID: lil-610181

ABSTRACT

Williams-Beuren syndrome is characterized by typical facies, supravalvular aortic stenosis, mental retardation, hyperacusis, and behavioral abnormalities with overfriendly personality and anxiety disorders. It is caused by a microdeletion of contiguous genes located in the 7q11.23 region. We studied 31 patients with the Williams-Beuren syndrome (19 men and 12 women), whose ages ranged from 9 to 26 years-old (median 14 years-old). The Williams-Beuren syndrome diagnosis was confirmed by FISH or microsatellite markers analysis in all patients. The objectives were to evaluate cognitive ability, verbal and total intelligence quotient execution, frequency of visual-spatial deficits, and autistic traits and to compare the results of molecular findings. The tests used were the WISC-III, WAIS-III, Rey Complex Figure and a scale of autistic traits. Their total intelligence quotient scores ranged from 51 to 86 (median of 63): 22 with mild mental retardation, 4 with moderate retardation, 4 classified as borderline and 1 as below average. All patients had marked visual-spatial deficit. The frequency of autistic traits was found in 13 of 31 patients (41.94%), with a predominance in males (ten men and three women). There was no correlation with the incidence of autistic traits in relation to the size of the deletion. This study reinforces the importance of the systematic assessment of cognitive function in Williams-Beuren syndrome patients, and it alerts researchers to the presence of a high frequency of autistic traits, as opposed to the overfriendly personality traits, which is typically showed by Williams-Beuren syndrome patients. These latter data are preliminary and further studies are necessary to confirm this specific finding in Williams-Beuren syndrome patients.


A síndrome de Williams-Beuren é caracterizada por fácies típicos, estenose aórtica supravalvar, retardo mental, hiperacusia e anormalidades comportamentais com personalidade amigável e distúrbios de ansiedade. É causada por microdeleção de genes contíguos localizados na região 7q11.23. Foram estudados 31 pacientes com a síndrome de Williams-Beuren (19 homens e 12 mulheres), cujas idades variaram de 9 a 26 anos (mediana de 14 anos). O diagnóstico da síndrome de Williams-Beuren foi confirmado pelo FISH (Fluorescence In Situ Hibridisation) ou por análise de marcadores microssatélites em todos os pacientes. Os objetivos foram: avaliar a capacidade cognitiva, o quociente de inteligência de execução verbal e total, a frequência de déficits visoespaciais, traços autistas; e comparar os resultados dos achados moleculares. Os testes utilizados foram: WISC-III, WAIS-III, Figuras Complexas de Rey e Escala de Traços Autísticos. Os pacientes apresentaram déficit cognitivo em todos os testes, o quociente de inteligência total variou de 51 a 86 (mediana de 63): 22 com deficiência mental leve, 4 com deficiência mental moderada; 4 limítrofes e 1 com média inferior. Os pacientes apresentaram déficit visoespacial. A frequência de traços autistas foi encontrada em 13 dos 31 pacientes (41,94%), com predomínio no sexo masculino (dez homens e três mulheres). Não foi encontrada correlação entre a presença de traços autísticos em relação ao tamanho da deleção. O presente estudo reforça a importância da avaliação sistemática da função cognitiva em pacientes com a síndrome de Williams-Beuren e alerta para a presença da alta frequência de traços autistas, que é o oposto da personalidade amigável tipicamente encontrada em pacientes com síndrome de Williams-Beuren. Estes últimos dados são preliminares e novos estudos serão necessários para confirmar este achado específico na síndrome de Williams-Beuren.


Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Gene Deletion , Autistic Disorder/epidemiology , Autistic Disorder/genetics , Cognition Disorders
11.
Pediatria (Säo Paulo) ; 30(3): 151-158, 2008. ilus, tab
Article in Portuguese | LILACS | ID: lil-506463

ABSTRACT

Objetivo: apresentar o quadro clínico de pacientes com trissomia, tetrassomia e pentassomia do cromossomo X...


Objective: to present the clinical findings featured by patients bearing chromossome X trisomy, tetrasomy and pentasomy...


Subject(s)
Humans , Male , Female , Infant , Child, Preschool , Child , Adolescent , Adult , Aneuploidy , Sex Chromosome Aberrations , Trisomy , X Chromosome
12.
Pediatria (Säo Paulo) ; 29(1): 26-32, 2007. tab, graf
Article in Portuguese | LILACS | ID: lil-463876

ABSTRACT

Objetivo: avaliar a frequência das aberrações cromossômicas encontradas nos pacientes atendidos em um serviço de genética. Casuística e métodos: foi realizado estudo retrospectivo dos registros de cariótipos de pacientes atendidos no Instituto da Criança no período de 1992-2002...


Objective: to access the frequency of chromosomal abnormalities observed in patients assisted at a genetics service. Patients and methods: a retrospective study was carried out regarding the recorded karyotype of patients assisted at Instituto da Criança within the period of 1992-2002...


Subject(s)
Humans , Cytogenetics , Genetic Counseling , Retrospective Studies
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