Publications by authors named "Natalya Ponomareva"

Electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) can provide corroborative data on neurophysiological alterations in Huntington's disease (HD). However, the alterations in EEG and fMRI resting-state functional connectivity (rsFC), as well as their interrelations, at different stages of HD remain insufficiently investigated. This study aimed to identify neurophysiological alterations in individuals with preclinical HD (preHD) and early manifest HD (EMHD) by analyzing EEG and fMRI rsFC and examining their interrelationships.

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The clusterin () rs11136000 genotype is a probable risk factor for Alzheimer's disease (AD). , also known as the apolipoprotein gene, shares certain properties with the apolipoprotein E () gene with a well-established relationship with AD. This study aimed to determine whether the electrophysiological patterns of brain activation during the letter fluency task (LFT) depend on genotypes in adults without dementia.

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The ε4 allele of the apolipoprotein E (4+) genotype is a major genetic risk factor for Alzheimer's disease (AD), but the mechanisms underlying its influence remain incompletely understood. The study aimed to investigate the possible effect of the genotype on spontaneous electroencephalogram (EEG) alpha characteristics, resting-state functional MRI (fMRI) connectivity (rsFC) in large brain networks and the interrelation of alpha rhythm and rsFC characteristics in non-demented adults during aging. We examined the EEG alpha subband's relative power, individual alpha peak frequency (IAPF), and fMRI rsFC in non-demented volunteers (age range 26-79 years) stratified by the genotype.

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Parkinson disease (PD) is attributed to a proteostasis disorder mediated by α-synuclein accumulating in a specific brain region. PD manifestation is often related to extraneuronal alterations, some of which could be used as diagnostic or prognostic PD biomarkers. In this work, we studied the shifts in the expression of proteostasis-associated chaperones of the HSP70 family and autophagy-dependent p62 protein values in the peripheral blood mononuclear cells (PBMC) of mild to moderate PD patients.

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is a key stress-responsive regulator of the hypothalamic-pituitary-adrenal axis. To elucidate the contribution of rs1360780 C/T alleles to aging and longevity, we genotyped in a cohort of 800 non-demented and Alzheimer's disease (AD) subjects of different age, taking into account the allele state of ε4, the major risk factor for AD. Furthermore, we searched for the association of with subcohorts of non-demented subjects evaluated for anxiety and resting-state quantitative EEG characteristics, associated with cognitive, emotional, and functional brain activities.

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Background: Patients with cystic fibrosis (CF) need costly medical care and adequate therapy with expensive medicinal products. Tigerase® is the first biosimilar of dornase alfa, developed by the lead Russian biotechnology company GENERIUM. The aim of the manuscript to present post hoc sub-analysis of patients' data with cystic fibrosis and severe pulmonary impairment of a larger comparative study (phase III open label, prospective, multi-centre, randomized study (NCT04468100)) of a generic version of recombinant human DNase Tigerase® to the only comparable drug, Pulmozyme®.

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Immunosenescence is a process of remodeling the immune system under the influence of chronic inflammation during aging. Parkinson's disease (PD) is a common age-associated neurodegenerative disorder and is frequently accompanied by neuroinflammation. On the other hand, cytomegalovirus (CMV), one of the most spread infections in humans, may induce chronic inflammation which contributes to immunosenescence, differentiation and the inflation of T cells and NK cells.

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Genome wide association studies (GWAS) have identified and validated the association of the genotype with Alzheimer's disease (AD). The rs3851179 allele is thought to have a protective effect, whereas the allele appears to confer risk for AD. The influence of the genotype on brain functional connectivity in non-demented subjects remains largely unknown.

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Genome-wide association studies have identified novel risk variants for Alzheimer's disease (AD). Among these, a gene carrying one of the highest risks for AD is PICALM. The PICALM rs3851179 A allele is thought to have a protective effect, whereas the G allele appears to confer risk for AD.

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Background: Brain dysfunction precedes clinical manifestation of Huntington's disease (HD) by decades. This study was aimed to determine whether resting EEG is altered in preclinical HD mutations carriers (pre-HD).

Methods: We examined relative power of broad traditional EEG bands as well as 1-Hz sub-bands of theta and alpha from the resting-state EEG of 29 pre-HD individuals and of 29 age-matched normal controls.

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Article Synopsis
  • Polymorphism of the CLU gene (specifically, the rs11136000 variant) has been linked to Alzheimer's disease risk, where the C allele may increase risk and the T allele may offer protection.
  • The study examined how the CLU genotype affects brain activity (resting-state alpha-rhythm) in non-demented adults aged 20-80, focusing on those without the ApoE ε4 allele to avoid confounding results.
  • Findings revealed that individuals with the CLU CC genotype showed increased alpha3 brain activity, particularly in those over 50, suggesting a potential connection between this genotype and preclinical changes in brain function related to Alzheimer's pathology.
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The epsilon4 allele of the apolipoprotein E gene (ApoE), as well as aging increase the risk of Alzheimer's and vascular diseases. Electroencephalogram (EEG) reactivity to hyperventilation (HV) depends on hypocapnia-induced cerebral vasoconstriction, which may be impaired in subjects with subclinical cerebrovascular disease. Quantitative EEG at rest and under 3-minute HV was examined in 125 healthy subjects divided into younger (age range 28-50) and older (age range 51-82) cohorts and stratified by ApoE genotype.

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