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PubMed Journals Articles About "Mutation Screening USH2A Gene Retinitis Pigmentosa USHER Patients" RSS

19:15 EDT 21st July 2018 | BioPortfolio

Mutation Screening USH2A Gene Retinitis Pigmentosa USHER Patients PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Mutation Screening USH2A Gene Retinitis Pigmentosa USHER Patients articles that have been published worldwide.

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Showing "Mutation screening USH2A gene retinitis pigmentosa USHER patients" PubMed Articles 1–25 of 47,000+

Unravelling the pathogenic role and genotype-phenotype correlation of the USH2A p.(Cys759Phe) variant among Spanish families.

Mutations in USH2A cause both isolated Retinitis Pigmentosa (RP) and Usher syndrome (that implies RP and hearing impairment). One of the most frequent variants identified in this gene and among these patients is the p.(Cys759Phe) change. However, the pathogenic role of this allele has been questioned since it was found in homozygosity in two healthy siblings of a Spanish family. To assess the causative role of USH2A p.(Cys759Phe) in autosomal recessive RP (ARRP) and Usher syndrome type II (USH2) and to esta...


Generation of an iPS cell line via a non-integrative method using urine-derived cells from a patient with USH2A-associated retinitis pigmentosa.

We have established an induced pluripotent stem (iPS) cell line using urine-derived cells from a 27-year-old male patient with retinitis pigmentosa associated with point mutations in the USH2A gene. Feeder-free culture conditions and the integration-free CytoTune™-iPS 2.0 Sendai Reprogramming Kit were used.

Myoclonus epilepsy, retinitis pigmentosa, leukoencephalopathy and cerebral calcifications associated with a novel m.5513G>A mutation in the MT-TW gene.

We sequenced the mitochondrial genome from a 40-year-old woman with myoclonus epilepsy, retinitis pigmentosa, leukoencephalopathy and cerebral calcifications. Histological and biochemical features of mitochondrial respiratory chain dysfunction were present. Direct sequencing showed a novel heteroplasmic mutation at nucleotide 5513 in the MT-TW gene that encodes tRNA. Restriction Fragment Length Polymorphism analysis confirmed that about 80% of muscle mtDNA harboured the mutation while it was present in mino...


Choroidal Vascularity Index in Retinitis Pigmentosa: An OCT Study.

To evaluate structural changes in the choroid of patients with retinitis pigmentosa (RP) using swept-source optical coherence tomography (OCT) scans.

Usherin defects lead to early-onset retinal dysfunction in zebrafish.

Mutations in USH2A are the most frequent cause of Usher syndrome and autosomal recessive nonsyndromic retinitis pigmentosa. To unravel the pathogenic mechanisms underlying USH2A-associated retinal degeneration and to evaluate future therapeutic strategies that could potentially halt the progression of this devastating disorder, an animal model is needed. The available Ush2a knock-out mouse model does not mimic the human phenotype, because it presents with only a mild and late-onset retinal degeneration. Usi...

Investigating the disease association of USH2A p.C759F variant by leveraging large retinitis pigmentosa cohort data.

Novel Mutation in Retinitis Pigmentosa GTPase Regulator Gene Causes Primary Ciliary Dyskinesia and Retinitis Pigmentosa.

The majority of X-linked retinitis pigmentosa (XLRP) is due to mutations in the retinitis pigmentosa GTPase regulator (RPGR) gene. Determining the pathogenicity of novel variants is important for enrollment of patients into gene therapy trials. Sequencing and analysis of RPGR variants in ORF15 is challenging, as it is highly repetitive and rich in purines. Overlapping reading frames and polymorphic insertions / deletions add further complexity to the detection of mutations. Identifying systemic manifestatio...

Efficacy Outcome Measures for Clinical Trials of USH2A caused by the Common c.2299delG Mutation.

To determine the change in vision and retinal structure in patients with the common c.2299delG mutation in the USH2A gene in anticipation of clinical trials of therapy.

Whole-exome sequencing reveals POC5 as a novel gene associated with autosomal recessive retinitis pigmentosa.

Retinitis pigmentosa (RP), the most common form of inherited retinal degeneration, is associated with different groups of genes, including those encoding proteins involved in centriole and cilium biogenesis. Exome sequencing revealed a homozygous nonsense mutation (c.304_305delGA [p. D102*]) in POC5, encoding the Proteome Of Centriole 5, in a patient with retinitis pigmentosa, short stature, microcephaly and recurrent glomerulonephritis. The POC5 gene is ubiquitously expressed, and immunohistochemistry reve...

Autosomal dominant retinitis pigmentosa with macular involvement associated with a disease haplotype that included a novel PRPH2 variant (p.Cys250Gly).

It is known that PRPH2 variants appear to be rare causes of retinitis pigmentosa (RP) in the Japanese population. The purpose of this study was to describe clinical and genetic features in autosomal dominant RP (adRP) patients with a novel disease-causing variant in the PRHP2 gene.

Analysis of intragenic USH2A copy number variation unveils broad spectrum of unique and recurrent variants.

Given that all forms of Usher syndrome (USH) present with hearing loss in advance of retinal disease, the syndromic nature of the disorder is rarely appreciated when critical management decisions are being made. As a result, molecular diagnostics are crucial in guiding the management of USH patients. While 11 genes have been associated with USH, the USH2A gene is one of the largest contributors. Approximately 20% of suspected USH probands that undergo USH2A sequencing at our laboratory receive an inconclusi...

Comprehensive Molecular Screening in Chinese Usher Syndrome Patients.

Usher syndrome (USH) refers to a group of autosomal recessive disorders causing deafness and blindness. The objectives of this study were to determine the mutation spectrum in a cohort of Chinese patients with USH and to describe the clinical features of the patients with mutations.

Phenotype Variations Caused by Mutations in the RP1L1 Gene in a Large Mainly German Cohort.

Mutations in the retinitis pigmentosa-1-like-1 (RP1L1) gene are the major cause of autosomal dominant occult macular dystrophy (OCMD), while recessive mutations have been linked to autosomal recessive retinitis pigmentosa (arRP). We present the clinical phenotype of a large German OCMD cohort, as well as four RP patients.

Effect of Oral Valproic Acid vs Placebo for Vision Loss in Patients With Autosomal Dominant Retinitis Pigmentosa: A Randomized Phase 2 Multicenter Placebo-Controlled Clinical Trial.

There are no approved drug treatments for autosomal dominant retinitis pigmentosa, a relentlessly progressive cause of adult and childhood blindness.

Toward the Mutational Landscape of Autosomal Dominant Retinitis Pigmentosa: A Comprehensive Analysis of 258 Spanish Families.

To provide a comprehensive overview of the molecular basis of autosomal dominant retinitis pigmentosa (adRP) in Spanish families. Thus, we established the molecular characterization rate, gene prevalence, and mutational spectrum in the largest European cohort reported to date.

Gene Correction Reverses Ciliopathy and Photoreceptor Loss in iPSC-Derived Retinal Organoids from Retinitis Pigmentosa Patients.

Genetic and prenatal diagnosis of a retinitis pigmentosa pedigree.

To explore the genetic etiology of a pedigree affected with hereditary retinitis pigmentosa.

POSTERIOR STAPHYLOMAS IN EYES WITH RETINITIS PIGMENTOSA WITHOUT HIGH MYOPIA.

To describe features of posterior staphylomas in nonhighly myopic eyes with retinitis pigmentosa (RP).

Long-term clinical course of 2 Japanese patients with PRPF31-related retinitis pigmentosa.

To assess the long-term clinical course of 2 patients with PRPF31-related retinitis pigmentosa (RP).

Misdiagnosis of X-linked retinitis pigmentosa in a choroideremia patient with heavily pigmented fundi.

Inherited retinal diseases are thought to be the leading cause of sight loss in the working age population. Mutations found in the RPGR and CHM genes cause retinitis pigmentosa (RP) and choroideremia, respectively. In the first instance, an X-linked family history of visual field loss commonly raises the suspicion of one of these two genes. In choroideremia, the classic description of a white fundal reflex secondary to the widespread chorioretinal degeneration was made over a hundred years ago in Caucasians...

Significant Relationship of Visual Field Sensitivity in Central 10° to Thickness of Retinal Layers in Retinitis Pigmentosa.

To determine the relationship between the sensitivity of the retina in the central 10° and the thickness of the retinal layers in patients with retinitis pigmentosa (RP).

Predictive Mathematical Models for the Spread and Treatment of Hyperoxia-induced Photoreceptor Degeneration in Retinitis Pigmentosa.

To determine whether the oxygen toxicity hypothesis can explain the distinctive spatio-temporal patterns of retinal degeneration associated with human retinitis pigmentosa (RP) and to predict the effects of antioxidant and trophic factor treatments under this hypothesis.

Expression Profiling Analysis Reveals Key MicroRNA-mRNA Interactions in Early Retinal Degeneration in Retinitis Pigmentosa.

The aim of this study was to identify differentially expressed microRNAs (miRNAs) that might play an important role in the etiology of retinal degeneration in a genetic mouse model of retinitis pigmentosa (rd10 mice) at initial stages of the disease.

Relations Among Foveal Blood Flow, Retinal-Choroidal Structure, and Visual Function in Retinitis Pigmentosa.

To investigate the relationships between foveal blood flow as measured by laser speckle flowgraphy (LSFG), the retinal-choroidal structure in enhanced depth imaging-optical coherence tomography (EDI-OCT), and central visual function in patients with retinitis pigmentosa (RP).

Association of Vitamin A Supplementation With Disease Course in Children With Retinitis Pigmentosa.

While oral vitamin A supplementation is considered to potentially slow loss of retinal function in adults with retinitis pigmentosa and normal liver function, little data from children with this disease are available.


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