Front Genet
November 2022
A twelve-year-old patient with a previous clinical diagnosis of spondylocostal skeletal dysplasia and moderate intellectual disability was genetically analyzed through next generation sequencing of a targeted gene panel of 179 genes associated to skeletal dysplasia and mucopolysaccharidosis in order to stablish a precision diagnosis. A homozygous nonsense [c.62C>G; p.
View Article and Find Full Text PDFATRX mutations are commonly associated with alpha-thalassaemia mental retardation syndrome (ATR-X syndrome) with a notable variable expressivity. This X-linked disorder is characterized by intellectual disability (ID) in a higher or lesser degree, in which the alpha-thalassaemia feature is not always present. Other phenotypic manifestations like facial dimorphism, hypotonia, microcephaly, skeletal abnormalities or urogenital malformations have been frequently observed in ATR-X syndrome.
View Article and Find Full Text PDFAntlers are the only organ in the mammalian body that regenerates each year. They can reach growth rates of 1-3 cm/day in length and create more than 20 cm/day of skin in the antler tips (their growth centers). Previous proteomic studies regarding antlers have focused on antler growth centers (tips) compared to the standard bone to detect the proteins involved in tissue growth.
View Article and Find Full Text PDFRelapse after chemotherapy treatment depends on the cancer initiating cells (CICs). PEDF (Pigmented Epithelium Derived Factor) is an anti-angiogenic, neurotrophic and self-renewal regulator molecule, also involved in CICs biology. Acute and chronic exposition of colon cancer cell lines to CT/CTE PEDF-derived peptides decreased drug-resistance to conventional colorectal cancer treatments, such as oxaliplatin or irinotecan.
View Article and Find Full Text PDFPurpose: The purposes of this study were to evaluate the genotypic and phenotypic correlations of Bietti crystalline dystrophy and to investigate the utility of in vivo corneal confocal microscopy in diagnosing this disorder.
Methods: A Spanish woman (proband) with a clinical diagnosis of Bietti crystalline dystrophy and 7 members of her family were recruited prospectively for complete clinical ophthalmic examination and genetic study. The medical records of an additional family member were reviewed retrospectively.
Purpose: To assess the mutation spectrum, enzymatic activity, and phenotypic features associated with CYP1B1 genotypes in primary congenital glaucoma (PCG) and nondominant juvenile glaucoma (ndJG).
Design: CYP1B1 genotyping, segregation analysis, and functional evaluation of mutations in a cohort of patients.
Participants: A total of 177 probands clinically diagnosed with PCG (161) or ndJG (16).
Purpose: CYP1B1 activates procarcinogens in some human tissues, including the urinary tract. Changes related to genetic polymorphisms are a known risk factor for cancer. We analyzed the association between CYP1B1 sequence variations and bladder cancer.
View Article and Find Full Text PDFPurpose: To investigate the role of WDR36 and P53 sequence variations in POAG susceptibility.
Methods: The authors performed a case-control genetic association study in 268 unrelated Spanish patients (POAG1) and 380 control subjects matched for sex, age, and ethnicity. WDR36 sequence variations were screened by either direct DNA sequencing or denaturing high-performance liquid chromatography.
Purpose: To analyze the contributions of cytochrome P4501B1 (CYP1B1) mutations to primary congenital glaucoma (PCG) in Spanish patients.
Methods: We analyzed, by polymerase chain reaction (PCR) DNA sequencing, the presence of promoter (-1 to -867) and exon CYP1B1 mutations in 38 unrelated Spanish probands affected by PCG. Functional analysis of nine identified mutations was performed measuring ethoxyresorufin O-deethylation activity and CYP1B1 stability in transiently transfected human embryonic kidney 293T (HEK-293-T) cells.
Purpose: Primary open angle glaucoma (POAG) is a genetically heterogeneous disease resulting in optic disc cupping and visual impairment. It can be inherited as either a complex or a monogenic trait. Autosomal dominant POAG is the most frequent type of monogenic glaucoma.
View Article and Find Full Text PDFPurpose: To investigate CYP1B1 gene mutations in Spanish patients with ocular hypertension (OHT) or primary open angle glaucoma (POAG).
Methods: The two coding exons of CYP1B1 were screened for sequence alterations by direct PCR DNA sequencing in 37 and 82 unrelated Spanish subjects diagnosed with OHT and POAG, respectively. As a control we used a group of 93 subjects from whom OHT or glaucoma were ruled out.