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Функциональная связанность в височных областях головного мозга и конверсия в болезнь Альцгеймера при мягком когнитивном снижении амнестического типа
Психиатрия. 2025. Т. 23. № 1. С. 6–17.
Паникратова Я. Р., Комарова А. Ю., Абдуллина Е. Г., Божко О. В., Cherkasov N., Гаврилова С. И., Колыхалов И. В., Лебедева И. С.
Background: structural and neurochemical abnormalities in temporal lobe and temporoparietal junction (T-TPJ) are seen not only in Alzheimer’s disease (AD) but also in amnestic mild cognitive impairment (aMCI). At the same time, studies of conversion to dementia focused on functional characteristics of these regions are lacking.
The aim was to search for patterns of functional connectivity (FC) within T-TPJ that differentiate patients with aMCI with future conversion to AD from stable aMCI patients and healthy controls.
Patients, Comparison Group and Methods: patients with aMCI who further converted to dementia due to AD (converters, n = 15), patients with stable aMCI (n = 12), and healthy individuals without cognitive deficits (n = 29) underwent resting-state functional magnetic resonance imaging. FC between cortical T-TPJ structures was compared between groups separately for each hemisphere (one-way ANCOVA and post hoc between-group comparisons).
Results: an increased FC between posterior parts of left middle and inferior temporal gyri was observed in converters compared to other groups. There was an inverse correlation between this FC and delayed recall of words (MoCA scale) in the entire sample, however, this correlation did not reach the level of statistical significance (p = 0.055).
Conclusions: the posterior parts of left middle and inferior temporal gyri are involved in auditory verbal memory and storing of visual images associated with a word, respectively. Therefore, а pattern of increased FC observed in future converters to AD may be a consequence of pathological processes that have already started and/or compensatory mechanisms.
Language:
Russian
Mokienko O., Zisman M. A., Bobrov P. et al., American Journal of Physical Medicine and Rehabilitation 2026 Vol. 105 No. 6 P. 555–563
Brain-computer interfaces (BCIs) represent a promising technology for restoring lower limb motor functions and gait after stroke. The application of BCIs in this field is supported by a limited number of studies. The objective of the review was to systematically and critically evaluate the current evidence on the use of BCIs for lower limb function ...
Added: May 28, 2026
Zaikin A., Sviridov I., Sosedka A. et al., Technologies 2026 Vol. 14 No. 2 Article 84
High-dimensional tabular data are common in biomedical and clinical research, yet conventional machine learning methods often struggle in such settings due to data scarcity, feature redundancy, and limited generalization. In this study, we systematically evaluate Synolitic Graph Neural Networks (SGNNs), a framework that transforms high-dimensional samples into sample-specific graphs by training ensembles of low-dimensional pairwise ...
Added: May 23, 2026
ЯКУБЕНКО Т. В., Plotnikov S., Ratio et Natura 2024 № 3 (11) Статья 10
The article presents the results of our own research aimed at studying the prospects of using genetic sequencing technologies to identify the risk of having children with genetic abnormalities. ...
Added: May 21, 2026
Андрушкевич О. М., Калиновский А. В., Гаврюшин А. В. et al., Нейрохирургия 2026 Т. 28 № 1 С. 33–42
Background. The application of cortical and subcortical stimulation during awake craniotomy mitigates the risk of persistent postoperative speech deficits. However, the functions of some white matter pathways remain inadequately understood, particularly the frontal aslant tract (FAT) of the dominant hemisphere.
Aim. To evaluate the efficacy of cortical and subcortical stimulation techniques in the localization of glial tumors near ...
Added: May 18, 2026
Perevoznyuk G., Batov A., Pleskovskaya A. et al., Scientific Reports 2026 Vol. 16 Article 13098
Motor imagery (MI) allows individuals to mentally simulate movements without execution, engaging neural pathways that overlap with those used during real actions. However, how imagery perspective influences corticospinal excitability across different effectors remains unclear. Using neuronavigated transcranial magnetic stimulation (TMS), we compared kinesthetic (KMI), first-person visual (VMI-1PP), and third-person visual (VMI-3PP) imagery of elbow flexion-extension ...
Added: May 5, 2026
Sosnin E. I., Vasil’ev Y. L., R.A. Solovyev et al., Computer Optics 2025 Vol. 49 No. 6 P. 1129–1137
In this article, we present a new unique dataset for dental research – AlphaDent. This dataset is based on the DSLR camera photographs of the teeth of 295 patients and contains over 1200 images. The dataset is labeled for solving the instance segmentation problem and is divided into 9 classes. The article provides a detailed ...
Added: May 4, 2026
Назаренко А. Г., Федоров М. В., Moshkin A. et al., Вестник Росздравнадзора 2026 № 1 С. 14–29
Multimodal foundation models and medical multimodal large language models are establishing a new class of diagnostic clinical decision support systems capable of operating on heterogeneous data sources, including medical imaging (X-ray, CT, MRI, ultrasound, histopathology), physiological signals (ECG, EEG), clinical text (electronic health records, reports, discharge summaries), laboratory measurements, molecular profiling data, and related modalities. ...
Added: May 4, 2026
Салагай О. О., Сахарова Г. М., Антонов Н. С. et al., Общественное здоровье 2026 Т. 6 № 1 С. 17–27
Introduction. The article presents the results of a study on the assessment of the consumption of tobacco and nicotine- containing products by Veterans.
The purpose of the study: to assess the prevalence of tobacco and nicotine among Militaries, impact on health, consumers’ desire to stop using, and the provision of medical care for tobacco/nicotine withdrawal.
Materials and ...
Added: April 30, 2026
Garmonova A., Shcheglova D., Камалова Г. Р. et al., Кубанский научный медицинский вестник 2026 Т. 33 № 2 С. 92–110
Introduction. The study analyzes the structure and volume of workload for faculty at Russian medical universities amidst increasing student numbers, rising demands for students' clinical training, scientific output, and continuous professional education. The relevance of the topic stems from the contradiction between official regulatory requirements and the actual excessive workload of medical educators. The aim is to provide ...
Added: April 29, 2026
Krasnov L., Malikov D., Kiseleva M. et al., Journal of Medicinal Chemistry 2026 Vol. 69 No. 8 P. 8838–8851
In this work, we developed a straightforward data-driven approach to predict the cytotoxicity of metal complexes based entirely on their (metal + ligands) composition. To this end, we have manually curated MetalCytoToxDB─a comprehensive experimental database comprising 26,500 IC50 values for 7050 metal complexes against 754 cell lines from 1921 articles. Based on these, machine learning ...
Added: April 23, 2026
Kopoleva E., Sergey A. Tsymbal, Kuchur O. et al., Drug Delivery and Translational Research 2026 P. 1–16
Multidrug resistance (MDR) remains one of the principal challenges in cancer chemotherapy, necessitating new strategies to restore drug efficacy. In this study we developed and characterize a redox-responsive nanoplatform based on trithiocyanuric acid and polyethylene glycol (TTCA-PEG NPs) as a potential tool to overcome MDR and provide a biocompatible delivery system for conventional antitumor drugs. ...
Added: April 20, 2026
Makarova M., Fedosov N., Mikhailova I. et al., FRONTIERS IN SIGNAL PROCESSING 2026 Vol. 6 Article 1776807
Introduction:
While self-referential attention is thought to enhance interoceptive sensitivity, its effect on cardiac modulation of corticospinal excitability remains unexplored. This pilot study investigated how viewing one’s own face (self-face processing) modulates the cardiac-phase coupling of motor output and whether this heart-brain coupling depends on interoceptive accuracy (heartbeat perception).
Methods:
In 15 healthy adults, motor-evoked potentials (MEPs) were ...
Added: April 17, 2026
Pogodaeva S. S., Miletina O. O., Mammadova L. V. et al., Frontiers in Bioscience - Landmark 2026 Vol. 31 No. 4 Article 48544
Background: Neuroblastoma (NB), a transcriptionally driven pediatric malignancy, exhibits a remarkable clinical and biological heterogeneity. Two major subtypes, adrenergic and mesenchymal, are differentially governed by distinct subsets of transcription factors that constitute the core regulatory circuitry (CRC). The adrenergic subtype is often associated with MYCN amplification and is particularly aggressive and therapy-resistant, underscoring the need ...
Added: April 15, 2026
Chernov I., Protas A., Popova E. et al., Biochemistry. Biokhimiia 2025 Vol. 19 No. 3 P. 279–287
This article reports the synthesis, characterization, cytotoxic activity, DNA binding study and antioxidant activity of N-(2-(2-(2-azidoethoxy)ethoxy)ethyl)-4,6-di(aziridin-1-yl)-1,3,5-triazin-2-amine. The synthesized compound was found to possess cytotoxic effects against six various cancer cell lines including HeLa, HCT116, T96G, A549, MCF7, and PANC-1 and non-cancer ECV cell line. Additionally, the capacity for DNA binding was assessed. The addition of 1,3,5-triazine ...
Added: April 15, 2026
Pogodaeva S., Miletina O., Antipova N. et al., Cancers 2025 Vol. 17 No. 19 Article 3228
Pediatric tumors such as neuroblastoma are characterized by a genome-wide ‘transcriptional burden’, surmising the involvement of multiple alterations of gene expression. Search for master regulators of transcription whose inactivation is lethal for tumor cells identified the non-POU domain-containing octamer-binding protein (NONO), a member of the Drosophila Behavior/Human Splicing family known for the ability to form ...
Added: April 15, 2026
Chernov K., Savin A., Otvodnikova D. et al., Oncology Research 2026 Vol. - No. -
The formation of drug resistance poses the ultimate threat in modern oncology. Targeted therapy lacks versatility, while conventional therapy is famous for its side effects. However, for the new therapeutics to address the challenge of drug resistance, such compounds should combine properties of both modalities. In this review, we argue that metal-based therapeutics are paramount ...
Added: April 15, 2026
Chernov K. V., Savin A. M., Otvodnikova D. E. et al., Oncology Research 2026 Vol. 34 No. 5 P. 1–40
The formation of drug resistance poses the ultimate threat in modern oncology. Targeted therapy lacks versatility, while conventional therapy is famous for its side effects. However, for the new therapeutics to address the challenge of drug resistance, such compounds should combine properties of both modalities. In this review, we argue that metal-based therapeutics are paramount ...
Added: April 15, 2026
Kochetkova E., Machinskaya R., Human Physiology 2025 Vol. 51 No. 6 P. 580–590
Growing evidence suggests the specific systems for emotional information maintenance and processing in working memory, highlighting the role of cognitive domains in emotional awareness. The question of neural basis of social-emotional processing in working memory remains open. We hypothesized that the neural systems supporting working memory for emotional processing may rely on shared ‘core’ networks ...
Added: April 15, 2026
Barskaya E. S., Savin A. M., Chernov K. V. et al., International Journal of Molecular Sciences 2026 Vol. 27 No. 6 Article 2800
Copper–organic compounds are being investigated as antitumor candidates. Besides their efficacy as cytotoxic agents alone, the oxidative potential of electrochemical Cu2+-to-Cu1+ transition emerges as an attractive approach for elimination of tumor cells otherwise resistant to chemotherapy. To minimize side effects of the potent oxidative burst upon Cu(II) reduction, the metal cations should be delivered to the ...
Added: April 15, 2026
Сахарова Г. М., Антонов Н. С., Stadnik N., Здравоохранение стран СНГ 2025 Т. 1 № 1 С. 42–49
Introduction. Self-rated health is the most widely used indicator of health, taking into account all its components - physical and mental health, emotional, social and financial well-being. Although individuals rate their health based on their own perceptions, when aggregated, the indicator accurately represents the health of the entire population. The purpose of the study: based ...
Added: April 10, 2026
Салагай О. О., Сахарова Г. М., Антонов Н. С. et al., Вопросы наркологии 2025 Т. 37 № 1 С. 27–43
In order to study the prevalence of signs of nicotine dependence among tobacco/nicotine users and the level of medical care for tobacco/nicotine use in addiction treatment organizations in the Russian Federation in 2013-2023, we have analyzed microdata from a sample observation of the health status of the population conducted in 2023. The analysis of the ...
Added: April 10, 2026
Антонов Н. С., Сахарова Г. М., Stadnik N., Электронный научный журнал "Социальные аспекты здоровья населения" 2025 Т. 71 № S3 Статья 13
Significance. A sedentary lifestyle is one of the four most important risk factors for developing non-communicable diseases. Regular physical activity can prevent from 4 million to 5 million deaths annually worldwide.
Purpose. To study the prevalence of a sufficient level of daily physical activity and its three components among the adult population, men and women, in ...
Added: April 9, 2026
Stadnik N., Антонов Н. С., Сахарова Г. М. et al., Профилактическая медицина 2025 Т. 28 № 6 С. 11–20
Studies on alcohol use generally analyze the age-related behavior associated with this factor but do not consider the attitude of people of different ages to the socio-economic situation, the absence or implementation of anti-alcohol policies, or the attitude change over time in people of different generations.
Objective. To analyze the features and changes over time of ...
Added: April 9, 2026
Anna Pavlova, Adamovich T., Malykh S., Frontiers in Human Neuroscience 2026 Vol. 20 Article 1748183
The aim of the present study was to investigate the association between resting-state EEG functional connectivity and spatial working memory (SWM) in adolescents, using a graph-theoretical approach. Sixty-three healthy adolescents (38 females; M = 16.8, SD = 0.47) participated in the study. Resting-state EEG was recorded by a wireless dry-sensor 32-channel headset (Cognionics Quick-32r) configured in a standard 10–20 montage. ...
Added: February 6, 2026