Publications by authors named "Rita Cerqueira"

Colorectal cancer (CRC) is the third most prominent cancer worldwide, and the second leading cause of cancer death. Poor outcomes and limitations of current treatments fuel the search for new therapeutic options. Curcumin (CUR) is often presented as a safer alternative for cancer treatment with a staggering number of molecular targets involved in tumor initiation, promotion, and progression.

View Article and Find Full Text PDF

Gitelman syndrome(GS) is a rare autosomal recessive salt-losing tubulopathy of young adults, characterised by hypokalaemia, hypomagnesaemia, hypocalciuria and secondary hyperaldosteronism. Hypercalcaemia due to hypocalciuria in these patients is extremely rare.A 25-year-old healthy woman was referred to the Endocrinology clinic for evaluation of persistent hypokalaemia.

View Article and Find Full Text PDF

Myeloproliferative neoplasms (MPNs) are classically divided into BCR RhoGEF and GTPase activating protein (BCR)-ABL proto‑oncogene 1 non‑receptor tyrosine kinase (ABL) positive chronic myeloid leukemia (CML) and BCR‑ABL negative MPNs, including essential thrombocythemia (ET). One of the major diagnostic criteria for ET is the absence of the philadelphia chromosome, thus when present it is almost indicative of CML. ET and CML are considered to be mutually exclusive; however, there are rare situations in which patients with ET present positive BCR‑ABL without the features of CML.

View Article and Find Full Text PDF

One of the major genetic insights into the pathogenesis of polycythaemia vera included the identification of the somatic point gain-of-function mutations in Janus kinase 2 gene-first on exon 14, present in 95%-97% of the cases, and later on exon 12. In the literature, we can find some reported studies where different exon 12 mutations are identified. Unlike patients with mutation in exon 14, the mutation at exon 12 is not usually associated with an increase in the three haematopoietic series (erythrocytosis, leucocytosis and thrombocytosis).

View Article and Find Full Text PDF

Despite progress in understanding the molecular basis, the diagnosis of neurofibromatosis 1 (NF 1) is based on clinical criteria, established by the National Institute of Health (NIH) Consensus Conference in 1987. The association of NF1 and piebaldism has been reported, but some authors disagree with this co-occurrence. In the light of present knowledge, we highlight that both entities might co-exist in the same patient.

View Article and Find Full Text PDF

The Kallmann syndrome is characterised by the association of hypogonadotropic hypogonadism and hypo/anosmia. It represents a phenotypically and genotypically heterogeneous clinical entity, with six genes identified so far in the literature-KAL1, FGFR1, PROKR2, PROK2, CHD7 and FGF8. Mutations in the FGFR1 gene can be found in approximately 10% of the patients.

View Article and Find Full Text PDF

Erythropoietic protoporphyria (EPP) is a rare inherited disorder of heme biosynthesis mostly caused by a deficient activity of the enzyme ferrochelatase (FECH), and consequent accumulation of protoporphyrin (PP) in various tissues. Clinical manifestations include a childhood onset, cutaneous photosensitivity and, sometimes, hepatobiliary disease. We report a 16-year-old male with EPP characterized by acute episodes of painful photosensitivity since early infancy, permanent changes in the photoexposed skin, microcytic anemia, thrombocytopenia, and mild hepatic dysfunction.

View Article and Find Full Text PDF

Angelman syndrome (AS) is characterised by severe developmental delay, severe speech impairment, gait ataxia and/or limb tremor and a unique behavioural phenotype. The diagnosis of AS is based on a combination of clinical features and molecular genetic testing. Currently, molecular genetic testing (methylation analysis and UBE3A sequence analysis) identifies anomalies in about 90% of individuals.

View Article and Find Full Text PDF

Piebaldism is a rare disorder present at birth and inherited as an autosomal dominant trait. It results from a mutation in the c-kit proto-oncogene and is associated with a defect in the migration and differentiation of melanoblasts from the neural crest. Clinical manifestations and phenotypic severity strongly correlates with the site of mutation within the KIT gene.

View Article and Find Full Text PDF

Hereditary pancreatitis is defined as a family history of two or more relatives with pancreatitis and clinical, biochemical, or radiologic evidence of pancreatitis. This is the fourth family described with hereditary pancreatitis related to mutation c.364C>T (p.

View Article and Find Full Text PDF

We report the case of a 12-year-old girl presenting at birth with erythroderma, erosions and blisters scattered over the integument. By the age of 3 she presented generalized hyperkeratotic plaques with a cobblestone pattern and a pungent odour, most prominently around flexures, scalp and palmoplantar areas. Clinical, histological and ultrastructural findings confirmed the diagnosis of epidermolytic hyperkeratosis (EHK).

View Article and Find Full Text PDF

Alström syndrome is a monogenic recessive disorder featuring an array of clinical manifestations, with systemic fibrosis and multiple organ involvement, including retinal degeneration, hearing loss, childhood obesity, diabetes mellitus, dilated cardiomyopathy (DCM), urological dysfunction, and pulmonary, hepatic, and renal failure. We evaluated a large cohort of patients with Alström syndrome for mutations in the ALMS1 gene. In total, 79 disease-causing variants were identified, of which 55 are novel mutations.

View Article and Find Full Text PDF