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Tear Fluid Catecholamines As Biomarkers of the Parkinson’s Disease: A Clinical and Experimental Study
Acta Naturae. 2019. Vol. 11. No. 4. P. 99–103.
Ugrumov M.
An important approach to an early diagnosis of Parkinson’s disease (PD) is screening for peripheral biomarkers in patients at the early clinical stage. In this study, we evaluated catecholamine concentration changes in the tear fluid of untreated PD patients as biomarkers. Norepinephrine and dopamine concentrations in the tear fluid of patients were found to increase compared to those in age controls, which was especially pronounced on the side where motor symptoms appeared. On the contrary, the epinephrine concentration in the tear fluid of patients was reduced bilaterally. Since there was no reason to consider the markers found in the clinical stage of PD as markers of the preclinical stage, we additionally studied the tear fluid composition in mouse neurotoxic models of PD preclinical and clinical stages. The norepinephrine concentration in the tear fluid of mice from the clinical stage model was found to be higher than that in controls; in the preclinical stage model, the norepinephrine concentration had a tendency to increase. Therefore, both PD patients and mice from PD preclinical and clinical stage models manifest unidirectional changes in their tear fluid compositions, which may be considered as promising biomarkers for the development of early diagnosis.
Springer, 2026.
The book presents the proceedings of the 13th International Conference on Frontiers of Intelligent Computing: Theory and Applications (FICTA 2024), held at Intelligent Systems Research Group (ISRG), London Metropolitan University, London, United Kingdom, during June 6–7, 2025. Researchers, scientists, engineers and practitioners exchange new ideas and experiences in the domain of intelligent computing theories with ...
Added: June 8, 2026
Kudriavtseva E., / РЦИС. Серия № 0148-756-286. 2026.
The content of the work is the system is a system for identifying four types of written speech structures. A set of 11 calculated parameters, statistical standards, and semantic characteristics allows for the identification of a text's structure as the result of a specific cognitive schema (scene, event, story, evaluation). The method has been verified ...
Added: June 2, 2026
Vorchik A., / SSRN. Серия Social Science Research Network "Social Science Research Network". 2026.
This work is devoted to a theoretical explanation of the Easterlin paradox, according to which long-term economic growth does not make average level of people's happiness increasing. By happiness, we mean the intensity of emotions people experience while comparing their new income with its expected value, or the target income with its original value. In the first case, ...
Added: May 31, 2026
Goltseva Y., Tsokolaeva Z., Beloglazova I. et al., Stem Cell Research and Therapy 2026 Vol. 17 No. 1 Article 112
Background Cardiac fibrosis represents a significant health burden, with endothelial dysfunction and damaged
perivascular microenvironment increasingly recognized as key contributors to fibrotic remodeling. The urokinase
plasminogen activator receptor (uPAR), a critical component of the urokinase system, plays a pivotal role in vascular
remodeling and fibrosis. While prior evidence indicates that uPAR deficiency leads to microvascular dysfunction and
perivascular fibrosis, ...
Added: May 19, 2026
Strizhkova D., / Институт русской литературы (Пушкинский Дом) РАН. Серия B001 "Репозиторий открытых данных по русской литературе и фольклору". 2026.
В базе данных представлена роспись русскоязычных литературных произведений и отрывков, напечатанных в учебниках по словесности, хрестоматиях, книгах для чтения, сборниках стихотворений и рассказов, выходивших во Франции, Германии, Латвии, Эстонии, Болгарии, Сербии в период первой волны русской эмиграции с 1918 по 1939 гг. Датасет представляет интерес для исследователей школьного литературного канона, эмиграции и детского чтения ...
Added: April 22, 2026
Жигунов А. Ю., / Basic Research Programme. Серия HUM "Humanities". 2026. № 1.
The article attempts to describe the features of the educational potential of Russian animation programmes in aspect of the representation of traditional spiritual and moral values. Based on media and semiotic analysis, the method of cultural and historical interpretation, animated Russian projects created from 2000 to the 2025, which were translated on television channels or streaming ...
Added: April 19, 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. 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
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
S. V. Nikulin, Olkhovik D., A.V. Razumovskaya et al., Doklady Biochemistry and Biophysics 2026 Vol. 526 P. 59–64
A novel trend in anticancer therapy is based on the combination of cytotoxic and metabolic drugs. Bach1 is a transcription factor activating glycolysis and increasing proliferation and metastatic potential in cancer cells. The cytotoxic effect was evaluated for a combination of rotenone, an inhibitor of mitochondrial respiration, and two different inhibitors of Bach1 transcription factor ...
Added: April 13, 2026
Zolotova N., Kirillova M., Dzhalilova D. et al., International Journal of Molecular Sciences 2025 Vol. 26 No. 23 Article 11511
Recently, evidence indicating that microplastics (MPs) have a hazardous effect on human health is accumulating. The potential of MPs having a role in carcinogenesis was suggested. Therefore, the aim of this study was to evaluate MPs’ effect on colitis-associated colorectal cancer (CAC) development. The AOM/DSS-induced CAC model was reproduced in two groups of adult male ...
Added: March 24, 2026
Silina M., Dzhalilova D., Fokichev N. et al., Frontiers in Molecular Biosciences 2025 Vol. 12 Article 1674608
Humans and laboratory animals differ in their resistance to hypoxia, which affects the severity of inflammatory diseases and the rate of tumor progression. Therefore, it is necessary to search for methods for assessing the initial tolerance to oxygen deficiency and the risks of developing acute mountain sickness without direct hypoxia exposure on the organism. The ...
Added: March 24, 2026
Shchetinin I., Nikolenko P., Nizamov T. et al., Ceramics International 2026 Vol. 52 No. 3 P. 3500–3511
In this work, we comprehensively investigated the influence of Indium doping on the structure, magnetic and functional properties of strontium M-type hexaferrites SrFe12-xInxO19 nanoparticles (where x = 1.7, 1.8, 2.0). Colloidally stable SrFe12-xInxO19 nanoparticles (∼10 nm) were synthesized using a combination of the citrate method and high-energy ball milling. We demonstrate that doping reduces both the specific saturation magnetization and, ...
Added: March 16, 2026
Isaev M., Pavel Bobrov, Olesya Mokienko et al., Sensors 2025 Vol. 25 No. 16 Article 5040
Understanding patterns of interhemispheric asymmetry is crucial for monitoring neuroplastic changes during post-stroke motor rehabilitation. However, conventional laterality indices often pose computational challenges when applied to functional near-infrared spectroscopy (fNIRS) data due to the bidirectional hemodynamic responses. In this study, we analyze fNIRS recordings from 15 post-stroke patients undergoing motor imagery brain-computer interface training across ...
Added: March 6, 2026
Mungalov R. V., Vand N. S., Chudakov D. M. et al., Биоорганическая химия 2025 Т. 51 № 5 С. 1827–1837
The development of therapeutic antigen-specific T-cell receptors (TCRs) requires comprehensive preclinical validation of their functional activity. One of the approaches in the development of new drugs for cell therapy based on antigen-specific T lymphocytes is the modification of autologous T lymphocytes with endogenous T-cell receptors. The present work reviews modern laboratory platforms used to assess ...
Added: March 4, 2026
Roman V. Mungalov, Mushenkova N., Chudakov D. et al., Frontiers in Immunology 2025 Vol. 16 Article 1551424
T-cell engagers represent a transformative approach to cancer immunotherapy leveraging bispecific and multispecific antibody constructs to redirect T-cell cytotoxicity toward malignant cells. These molecules bridge T cells and tumor cells by simultaneously binding CD3 on T cells and tumor-associated antigens on cancer cells, thereby enabling precise immune targeting even in immunologically “cold” tumors. Recent advancements ...
Added: March 4, 2026
Садовская Я. О., Гусев Д. В., Karimova A. et al., Российский онкологический журнал 2025 Т. 30 № 3 С. 247–258
Обоснование. Активаторы STING с направленной доставкой в опухолевые узлы обладают высоким потенциалом в иммунотерапии рака, особенно в формате иммуноконъюгатов. Известные соединения, такие как MSA-2, не обладают достаточной активностью для их использования в качестве активной составляющей иммуноконъюгата, поэтому требуется разработка новых, более активных соединений.
Цель. Изучение биологической активности нового соединения SAD-2 и оценка его перспективности с целью ...
Added: February 19, 2026
Karimova A., Садовская Я. О., Солопова О. Н., Российский онкологический журнал 2025 Т. 30 № 3 С. 156–169
ABSTRACT Modern oncology needs to develop and implement antineoplastic agents that provide sustained remission without serious side effects. Immunotherapy and targeted therapy agents that activate innate immunity may address this issue. The stimulator of interferon genes (STING), an intracellular protein, mediates the synthesis of type I interferons, which have antiviral, antitumor, and antiproliferative properties. The ...
Added: February 19, 2026
Portnova G., Proskurnina E., Liaukovich K. et al., Journal of Molecular Neuroscience 2026 Vol. 76 Article 19
This study investigates the relationship between stress coping ability, salivary antioxidant capacity (AOC), and trace element concentrations, focusing on zinc (Zn) and potassium (K). A cohort of 73 participants, divided into groups based on stress coping ability (SCA) (“adaptive”, “intermediate”, and “maladaptive”), underwent cognitive tasks while physiological and behavioral data were collected. Saliva samples were ...
Added: February 2, 2026
Petrova D., EBioMedicine 2024
Added: January 18, 2026
Petrova D., Biomolecules 2025
Added: January 18, 2026
I. A. Khaustov, Yu. A. Safronova, O. E. Chebotareva et al., Applied Biochemistry and Microbiology 2025 Vol. 61 No. 9 P. 1753–1759
Polydimethylsiloxane (PDMS) remains one of the most popular materials for microfluidic chips, but its high gas permeability can lead to the formation of gas bubbles in microchannels, which hampers the reproducibility of experiments in organ-on-a-chip systems. The dependence of the gas permeability of PDMS on the ratio of base to hardener (2.5 : 1, 5 : 1, and ...
Added: December 22, 2025
David Arteaga, Poptsova M., Computational and Structural Biotechnology Journal 2026 Vol. 31 P. 82–93
Accurate predictions and large-scale identification of protein-protein interactions (PPIs) are crucial for understanding their inherent biological mechanisms and protein functions in virtually all biological processes. Nowadays, graph-based deep learning models have made significant contributions in modeling proteins with physicochemical and geometric features. However, most of these models rely on conventional graph construction methods, such as ...
Added: December 22, 2025
Posnenkova O., Simonyan M., Akimova N., Blood Pressure Monitoring 2025 No. 11
We aimed to evaluate the accuracy of B.Well PRO-33 (B.Well, Widnau, Switzerland) oscillometric device for professional office measurement of blood pressure (BP) on the upper arm in the general population in accordance with the Amendment 2.2024-01 of the Standard 81060-2:2018 by the International Organization for Standardization (ISO 81060-2:2018/AMD 2:2024). Study participants were recruited according to ...
Added: December 11, 2025