Browsing by Author "Antunes, Henedina"
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- Familial chylomicronemia syndrome in PortugalPublication . Alves, Ana Catarina; Miranda, Beatriz; Sequeira, Sílvia; Moldovan, Oana; Nunes, Catarina; Antunes, Henedina; Martins, Esmeralda; Gonçalves, Rute; Duarte, Sequeira; Guerra, António; Gaspar, Ana; Salgado, Miguel; Azevedo, Aida; Araújo, Francisco; Ferreira, Ana Cristina; Rato, Quitéria; Palma, Isabel; Bourbon, MafaldaFamilial chylomicronemia syndrome (FCS) is a rare autosomal recessive disorder of lipoprotein metabolism. It is characterized by marked elevation of triglyceride and chylomicron levels, lipaemic plasma, recurrent pancreatitis, eruptive xanthoma, hepatosplenomegaly, andliapemiaretinalis. All genes associated with FCS (LPL, APOC2, APOA5, LMF1 and GPHBP1) have an effect on the activity of lipoprotein lipase (LPL). The aim of this study is to present all cases with FCS clinical diagnosis, studied in our laboratory.
- Familial Chylomicronemia Syndrome: clinical and molecular characterization of individuals WITH clinical diagnosis in PortugalPublication . Alves, Ana Catarina; Abrantes, Leonor; Sequeira, Sílvia; Moldovan, Oana; Nunes, Catarina; Antunes, Henedina; Martins, Esmeralda; Gonçalves, Rute; Duarte, Sequeira; Guerra, António; Gaspar, Ana; Salgado, Miguel; Azevedo, Aida; Rato, Quitéria; Palma, Isabel; Bourbon, MafaldaAim: Familial chylomicronemia syndrome (FCS) is a rare autosomal recessive disorder of lipoprotein metabolism. It is characterized by marked elevation of triglyceride and chylomicron levels, lipaemic plasma, recurrent pancreatitis, eruptive xanthoma, hepatosplenomegaly, and liapemia retinalis. All genes associated with FCS (LPL, APOC2, APOA5, LMF1 and GPHBP1) have an effect on the activity of lipoprotein lipase (LPL). The aim of this study is to present all cases with FCS clinical diagnosis, studied in our laboratory.
- A novel de novo deletion of chromosome 7 [46,XX,del(7)(p14.2 p15.1)] in a child with feeding problemsPublication . Antunes, Henedina; Gonçalves, Jean-Pierre; Esmeralda, Silva; Oliva Teles, NatáliaThe phenotype and severity of symptoms associated with deletions on chromosome 7 are directly proportional to the size of the deleted segment. Distal and interstitial deletions have been described in 40 cases. In this report the authors aim to report a child with a novel de novo interstitial deletion on chromosome 7, with the following karyotype: 46,XX,del(7)(p14.2 p15.1). We described a female, born at 38weeks with intrauterine growth restriction and feeding problems with episodes of cyanosis after feedings and failure to thrive. Physical examination showed low implantation of ears, hypertelorism, oblique palpebral fissures, retrognathia, and palate ogived, with insertion anomalies of the toes, poor facial expression and mild axial hypotonia. Transfontanelar ultrasound, magnetic resonance imaging, bronchofibroscopy and metabolic studies were normal. She was hospitalized until the 32nd day of life. She started speech therapy and presented improvements in swallowing. The percutaneous endoscopic gastrostomy was removed at 36months. She had recurrent urinary tract infection with normal dimercaptosuccinic acid but with a vesicoureteral reflux (grade III). Imagiological studies revealed a bilateral osteonecrosis of femoral epiphysis (Legg-Calvé-Perthes disease). Currently (6years-old), she is being normally fed (body mass index=15.8kg/m(2)). Her weight is 16.4kg (3rd centile) and length is 105cm (3rd to 5th centiles). She has a mild delay of psychomotor development impairment and some speech problems. This is the first case report of a patient with this de novo small interstitial deletion on chromosome 7. This rare chromosomal abnormality was associated with severe feeding problems in the first years of life.
- Síndrome de quilomicronemia familiar em Portugal, agosto 2020Publication . Alves, Ana Catarina; Sequeira, Sílvia; Moldovan, Oana; Antunes, Henedina; Martins, Esmeralda; Gonçalves, Rute; Duarte, João Sequeira; Guerra, António; Salgado, Miguel; Azevedo, Aida; Gaspar, Ana; Palma, Isabel; Rato, Quitéria; Bourbon, MafaldaA síndrome de quilomicronemia familiar (FCS) é uma doença rara, com hereditariedade recessiva, envolvendo o metabolismo das lipoproteínas. Carateriza-se por um aumento acentuado dos triglicéridos (TGs) e quilomicras no plasma. Os doentes apresentam plasma lipémico, pancreatite recorrente, xantomas eruptivos, hepatoesplenomegalia e lipemia retiniana. O presente estudo tem como objetivo a caraterização molecular de indivíduos com quadro clínico de FCS. Até à data foram referenciados a este estudo 26 indivíduos com diagnóstico clínico de FCS. O estudo inclui uma análise bioquímica do perfil lipídico e uma análise molecular dos 5 genes envolvidos. Foi possível identificar uma possível causa genética para a doença em 8/17 casos índex que apresentam variantes potencialmente patogénicas nos genes LPL, APOC2 e LMF1. Em 7 doentes só foi identificada uma variante genética em heterozigotia no gene LPL e APOA5, desconhecendo-se qual o seu impacto no metabolismo da LPL. Dois doentes têm estudo genético negativo e 9 ainda se encontram em estudo. Os doentes com FCS devem ser identificados o mais precocemente possível, a fim de minimizar ou prevenir os efeitos nefastos desta condição. Nas situações em que temos diagnóstico molecular, este permite um diagnóstico preciso e uma melhor gestão das morbilidades, contribuindo para uma melhoria do prognóstico.