Publications by authors named "Vasily Smirnov"

Purpose: To update knowledge on bestrophin-1 structure and function with the aim of assessing the pathogenicity of variants reported in the Leiden Open Variation Database (LOVD) and in a large French cohort of bestrophinopathies.

Methods: All unique variants reported in the latest version (October 2024) of the BEST1-LOVD database were uploaded and curated. We described all BEST1 variants identified in French patients analyzed at Lille University Hospital, between 2008 and 2024.

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Introduction: Retinal dysfunction associated with CACNA2D4 gene defects is a rare disorder of photoreceptor to bipolar cell signaling. We report two affected siblings presenting a surprising disparity of retinal involvement.

Materials And Methods: Patients underwent complete ocular examination, multimodal fundus imaging, and full-field electroretinography (ffERG).

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Objective: The aim of the study was to measure electromyographic (EMG) parameters of masticatory muscle activity and evaluate bolus properties using an agar chewing test in emotional eaters.

Methods: Untrained participants (83 women and 46 men, mean age 32.4 ± 8.

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Recessive RPE65-related retinopathy is an inherited retinal disease (IRD) that is a well-established target for gene therapy. Dominant RPE65-related retinopathy, however, due to Irish founder variant p.(D477G), is extremely rare.

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Purpose: Retinitis pigmentosa (RP) is a genetically heterogeneous group of retinal degenerative disorders characterized by the loss of rod and cone photoreceptors, leading to visual impairment and blindness. To date, to our knowledge, X-linked RP has been associated with variants in 3 genes (RPGR, RP2, and OFD1), whereas genetic defects at 3 loci (RP6, RP24, and RP34) are yet unidentified. The aim of this study was to identify a novel candidate gene underlying X-linked RP.

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Previous research has repeatedly shown that social jetlag is accompanied by metabolic disorders and obesity. However, the mechanism of association between these phenomena has not been sufficiently studied. This study aims to test the hypothesis that social jetlag is associated with an increased incidence of eating disorders and thus increases the risk of metabolic disorders.

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Background: This retrospective real-world study evaluated the effectiveness and safety of subretinal voretigene neparvovec (VN) in French patients (six children, six adults) with inherited retinal dystrophies.

Methods: Data were collected from medical records for the year following bilateral treatment with subretinal VN. Functional vision was assessed using the Streetlab mobility course with obstacles.

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Hardness is one of the dominant sensory characteristics of food. This study estimated the effect of sensitivity to hardness on the texture perception and chewing function using 2, 4, and 6% agar gels. Increasing the concentration of agar resulted in an increase in gel hardness and springiness, measured by texture profile analysis.

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Background: Most of the data on visual functions in Leber hereditary optic neuropathy (LHON) is based on patient questionnaires. Our study assessed the impact of LHON on visual function by testing facial recognition and execution of purposeful actions.

Methods: Twelve participants with LHON with central scotoma ranging from 5° to 20° and 12 unaffected age-matched controls were involved in our study.

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New photocatalytic materials based on complex oxides and a widely used and cheap polymer (PMMA) have been prepared. Among complex oxides previously investigated, the following have been used-RbTeWO, CsTeMoO, CsVTeO, NaVMoO, KVMoO. For comparison, the binary oxides TiO and WO were used.

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Article Synopsis
  • - Albinism is caused by a variety of genes (21 identified), with most cases following an autosomal recessive inheritance pattern, though one form is X-linked; about 70% of cases can be diagnosed through genetic analysis.
  • - Of the undiagnosed cases, roughly 15% carry one pathogenic variant but may have undiscovered variants in non-coding regions; this research involved sequencing a group of 122 heterozygous patients.
  • - From the study, 12 patients received additional diagnoses based on non-coding variants that affected RNA splicing, highlighting the need to investigate non-coding regions to improve diagnostic rates for genetic diseases like albinism.
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Usher syndrome (USH) is the most common cause of deafblindness. USH is autosomal recessively inherited and characterized by rod-cone dystrophy or retinitis pigmentosa (RP), often accompanied by sensorineural hearing loss. Variants in >15 genes have been identified as causative for clinically and genetically distinct subtypes.

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Article Synopsis
  • - AHR gene defects are linked to a rare disorder characterized by infantile nystagmus and foveal hypoplasia, as demonstrated in a case study of a 6-year-old girl with a novel genetic variant.
  • - Comprehensive eye examinations, including VEP and electroretinography, revealed significant visual impairments and specific patterns in the patient's visual processing.
  • - Over an 11-year follow-up, the patient's visual acuity improved despite the initial diagnosis of severe ocular conditions, highlighting potential for positive outcomes in similar cases.
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Introduction: Spastic paraplegia (SPG) is a heterogenous group of neurodegenerative disorders, that may include ocular involvement. Here we report the clinical data of a patient with late-onset Kjellin syndrome, a peculiar form of hereditary SPG with macular dystrophy.

Materials And Methods: Clinical, functional and multimodal retinal imaging data were collected.

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The purpose of this study was to test the hypothesis that melatonin-containing food (FMT) consumption is associated with a better sleep schedule and cognitive and psychoemotional state in older adults. A cross-sectional study of 557 (79% females) older adults living in the community with a mean age of 68.9 ± 7.

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Article Synopsis
  • The study focuses on inherited retinal degenerations (IRDs) that can lead to blindness, particularly investigating genetic variations in a North African cohort, which has been less studied compared to European and Asian populations.
  • Researchers used advanced sequencing techniques and expression analyses on various cell types to identify a new gene defect in the UBAP1L gene in four cases of autosomal recessive IRD from Tunisia.
  • Findings suggest that these biallelic UBAP1L variants play a significant role in IRDs, indicating a potential genetic prevalence in the North African population.
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Background: Kabuki Syndrome is a rare and genetically heterogenous condition with both ophthalmic and systemic complications and typical facial features. We detail the macular phenotype in two unrelated patients with Kabuki syndrome due to de novo nonsense variants in KMT2D, one novel. A follow-up of 10 years is reported.

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Adolescents are an at-risk group for circadian misalignment. The contribution of sleep-wake rhythm instability to the psychoemotional, cognitive, and weight disorders of adolescents has been studied in sufficient detail. At the same time, there is insufficient information about the association between chrononutrition indices and the well-being of adolescents.

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Food is an important source of melatonin (MT), which belongs to a group known as chronobiotics, a class of substances that affect the circadian system. Currently, no studies have been conducted on how the consumption of foods containing MT (FMT) is associated with indicators characterizing the human circadian system. In this study, we tested the hypothesis that FMT consumption is associated with chronotype and social jetlag.

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gene mutations are a well-known cause of autosomal recessive retinitis pigmentosa (RP), which was recently associated with olfactory dysfunction. The purpose of this study was to report the molecular spectrum and the ocular and olfactory phenotypes of a multiethnic cohort with -associated RP. A cross-sectional case series was conducted at two ophthalmic genetics referral centers.

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Objective: The purpose of this study was to compare the anthropometric and sleep-wake rhythm characteristics of schoolchildren that attend school in morning and afternoon school shifts.

Methods: We recruited 18 481 individuals (females: 56.4%) aged 11 to 18 years old with an average age of 14.

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Article Synopsis
  • Dominant variants in the RARB gene cause MCOPS12, a type of microphthalmia that comes with various birth defects and developmental delays, impacting 25 individuals in this study.
  • The research employed transcriptional assays and structural analysis to evaluate how these RARB variants affect its typical function, revealing both gain-of-function and loss-of-function activities.
  • Findings indicate that while RARB disruption leads to a variety of clinical outcomes, some affected individuals may not show key symptoms like eye abnormalities or motor issues, highlighting the complexity of these genetic variations.
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This study aims to develop hydrogels from apple pectin (AP) and hogweed pectin (HP) in multiple ratios (4:0; 3:1; 2:2; 1:3; and 0:4) using ionotropic gelling with calcium gluconate. Rheological and textural analyses, electromyography, a sensory analysis, and the digestibility of the hydrogels were determined. Increasing the HP content in the mixed hydrogel increased its strength.

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Myopia is the most common eye disorder, caused by heterogeneous genetic and environmental factors. Rare progressive and stationary inherited retinal disorders are often associated with high myopia. Genes implicated in myopia encode proteins involved in a variety of biological processes including eye morphogenesis, extracellular matrix organization, visual perception, circadian rhythms, and retinal signaling.

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The above-ground part of the was found to contain ~13% (/) of polysaccharides extractable with water and aqueous solutions of ammonium oxalate and sodium carbonate. The fractions extracted with aqueous sodium carbonate solutions had the highest yield. The polysaccharides of majority fractions are characterized by similar monosaccharide composition; namely, galacturonic acid and arabinose residues are the principal components of their carbohydrate chains.

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