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

19:32 EDT 24th September 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.

Establishment of a human iPSC line, IISHDOi004-A, from a patient with Usher syndrome associated with the mutation c.2276G>T; p.Cys759Phe in the USH2A gene.

A human iPSC line, IISHDOi004-A, from fibroblasts obtained from a patient with Usher syndrome, harboring a homozygous mutation in the USH2A gene (c.2276G>T; p.Cys759Phe) has been generated. Reprogramming factors Oct3/4, Sox2, Klf4, and c-Myc were delivered using Sendai virus.


Knockout of ush2a gene in zebrafish causes hearing impairment and late onset rod-cone dystrophy.

Most cases of Usher syndrome type II (USH2) are due to mutations in the USH2A gene. There are no effective treatments or ideal animal models for this disease, and the pathological mechanisms of USH2 caused by USH2A mutations are still unknown. Here, we constructed a ush2a knockout (ush2a) zebrafish model using TALEN technology to investigate the molecular pathology of USH2. An early onset auditory disorder and abnormal morphology of inner ear stereocilia were identified in the ush2a zebrafish. Consequently,...

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...

Fundus phenotype in retinitis pigmentosa associated with EYS mutations.

to report phenotypic and genotypic features in a group of autosomal recessive retinitis pigmentosa (arRP) patients associated with EYS mutations.

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.

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...

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.

Rates of Bone Spicule Pigment Appearance in patients with Retinitis Pigmentosa Sine Pigmento.

To determine rate of bone spicule pigmentation appearance in patients with Retinitis Pigmentosa (RP) DESIGN: Retrospective, observational case series.

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.

Prediction of Visual Acuity After Cataract Surgery Using Optical Coherence Tomography Findings in Eyes With Retinitis Pigmentosa.

To investigate the predictive factors of visual acuity (VA) after cataract surgery in patients with retinitis pigmentosa (RP).

Establishment of an induced pluripotent stem cell line from a retinitis pigmentosa patient with compound heterozygous CRB1 mutation.

The human iPSC line LEIi006-A was generated from dermal fibroblasts from a patient with retinitis pigmentosa using episomal plasmids containing OCT4, SOX2, KLF4, L-MYC, LIN28, mir302/367 microRNA and shRNA for p53. The iPSC cells carry compound heterozygous mutations (c.1892A > G and c.2548G > A) in the CRB1 gene. LEIi006-A expressed pluripotent stem cell markers, had a normal karyotype and could be differentiated into endoderm, mesoderm and ectodermal lineages, as well as retinal organoids.

Subjective and Objective Measures of Daytime Activity and Sleep Disturbance in Retinitis Pigmentosa.

Objectively measured limitations in daytime activity levels appear to be inextricably linked with sleep disturbances in retinitis pigmentosa (RP) patients, as well as associated with unemployment status and central vision loss. Innovative interventional strategies should be developed to help improve these issues and overall quality of life for RP patients.

Progression in X-linked Retinitis Pigmentosa Due to ORF15-RPGR Mutations: Assessment of Localized Vision Changes Over 2 Years.

To determine the progression rate and the variability of rod and cone sensitivities in patients with X-linked retinitis pigmentosa (XLRP) caused by mutations in ORF15-RPGR.

Structural disease progression in PDE6-associated autosomal recessive retinitis pigmentosa.

To evaluate the progression of retinitis pigmentosa (RP) caused by mutations in either PDE6A or PDE6B by measuring the progressive constriction of the hyperautofluorescent ring and shortening of the ellipsoid zone (EZ)-line width.

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).


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