180 results match your criteria: "St.-Petersburg State Pediatric Medical University[Affiliation]"

Background: Venous popliteal aneurysms are a rare but serious disease due to the risk of pulmonary embolism (PE). Aneurysms larger than 20 mm in diameter or with an embolic episode should be treated. The classic surgical technique is the tangential resection of the aneurysm with venorrhaphy, which may raise the risk of recurrence.

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  • Liquid biopsy has become an essential tool over the last decade for diagnosing and managing various malignant tumors, offering benefits like early detection and monitoring of treatment response.
  • This method typically analyzes tumor-derived components from blood, including circulating tumor DNA (ctDNA), circulating tumor cells (CTCs), and others, but often fails to detect these markers in a significant number of patients.
  • The review highlights the potential of a multiparametric approach that tests multiple biomarkers simultaneously, which could enhance sensitivity and provide a more accurate understanding of cancer progression and treatment outcomes.
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Interaction of Sensitivity, Emotions, and Motivations During Visual Perception.

Sensors (Basel)

November 2024

Department of Normal Physiology, St. Petersburg State Pediatric Medical University, 194100 Saint Petersburg, Russia.

When an organism is exposed to environmental stimuli of varying intensity, the adaptive changes in the CNS can be explained by several conceptual provisions: the law of motivation-activation by Yerkes and Dodson, the laws of force and pessimal protective inhibition, and the theory of emotion activation. Later, reinforcement sensitivity theory was developed in the fields of psychology and psychophysics. At the same time, cortical prepulse inhibition (PPI), the prepulse inhibition of perceived stimulus intensity (PPIPSI), and the augmentation/reduction phenomenon were proposed in sensory neurophysiology, which expanded our understanding of consciousness.

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In an experiment on Wistar rats, a Heymann's active nephritis model was reproduced. After the chronic course of the disease was confirmed, we compared the effectiveness of single systemic and local transplantation of allogeneic cultured stromal cells of the mononuclear fraction of the bone marrow. Both methods of cell therapy reduced clinical manifestations of active Heymann's nephritis: proteinuria decreased and glomerular filtration rate increased 30 days after cell administration.

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Glioblastomas (GBMs) are the most malignant and intractable of all cancers, with an unfavorable clinical prognosis for affected patients. The objective was to analyze the sensitivity of GBM cells to the antimicrobial peptides (AMPs) cathelicidin (LL-37) and protegrin-1 (PG-1), both alone and in combination with chemotherapy, to predict overall survival (OS) in the patients. The study was conducted on 27 GBM patients treated in the neurosurgical department of the Almazov Medical Research Centre (Saint Petersburg, Russia) from 2021 to 2024.

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There are more than 260 million people of Slavic descent worldwide, who reside mainly in Eastern Europe but also represent a noticeable share of the population in the USA and Canada. Slavic populations, particularly Eastern Slavs and some Western Slavs, demonstrate a surprisingly high degree of genetic homogeneity, and, consequently, remarkable contribution of recurrent alleles associated with hereditary diseases. Along with pan-European pathogenic variants with clearly elevated occurrence in Slavic people (e.

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  • * A case study reported an incidental finding of BS through routine DNA testing in breast cancer patients, revealing a woman who appeared healthy for 38 years before her breast cancer diagnosis.
  • * The woman's mild BS symptoms were confirmed through genetic testing, emphasizing the need for including BLM in gene panels for cancer-related DNA testing to identify undiagnosed patients.
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Marinobufagenin (MBG) is implicated in chronic kidney disease, where it removes Fli1-induced inhibition of the collagen-1. We hypothesized that (i) in nephrectomized rats, aortic fibrosis develops due to elevated plasma MBG and inhibited Fli1, and (ii) that the antibody to MBG reduces collagen-1 and improves vasodilatation. A partial nephrectomy was performed in male Sprague-Dawley rats.

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Background: Factors associated with severe COVID-19 infection have been identified; however, the impact of infection on longer-term outcomes is unclear. The objective of this study was to examine the impact of COVID-19 infection on the trajectory of lung function and nutritional status in people with cystic fibrosis (pwCF).

Methods: This is a retrospective global cohort study of pwCF who had confirmed COVID-19 infection diagnosed between January 1, 2020 and December 31, 2021.

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  • Crouzon syndrome, which affects 1 in 25,000-31,000 newborns, is rarely linked with optic canal stenosis, a condition that can affect vision.
  • A 6-year-old boy with Crouzon syndrome underwent multiple surgeries but experienced worsening vision, leading to the discovery of optic canal stenosis via MRI and confirmed by 3D CT.
  • After surgical decompression of the optic canals, the patient's vision improved, suggesting that addressing optic canal stenosis can be beneficial even after prolonged symptoms.
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Unlabelled: More than a quarter of the world's population is infected with . However, only about 10% of those infected develop active TB. This indicates a key role for innate immunity in limiting M.

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The umbilical cord is a material that enhances regeneration and is devoid of age-related changes in the extracellular matrix (ECM). The aim of this work was to develop a biodegradable scaffold from a decellularized human umbilical cord (UC-scaffold) to heal full-thickness wounds. Decellularization was performed with 0.

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Current status of molecular diagnostics for lung cancer.

Explor Target Antitumor Ther

June 2024

I.V. Kurchatov Complex for Medical Primatology, National Research Centre "Kurchatov Institute", 354376 Sochi, Russia.

The management of lung cancer (LC) requires the analysis of a diverse spectrum of molecular targets, including kinase activating mutations in , (), and oncogenes, G12C substitutions, and , , and gene fusions. Administration of immune checkpoint inhibitors (ICIs) is based on the immunohistochemical (IHC) analysis of PD-L1 expression and determination of tumor mutation burden (TMB). Clinical characteristics of the patients, particularly age, gender and smoking history, significantly influence the probability of finding the above targets: for example, LC in young patients is characterized by high frequency of kinase gene rearrangements, while heavy smokers often have G12C mutations and/or high TMB.

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Autoprobiotics in the Treatment of Patients with Colorectal Cancer in the Early Postoperative Period.

Microorganisms

May 2024

Scientific and Educational Center "Molecular Bases of Interaction of Microorganisms and Human", World-Class Research Center "Center for Personalized Medicine", Institute of Experimental Medicine, 197376 St-Petersburg, Russia.

Despite great advances in the treatment of oncological diseases, the development of medical technologies to prevent or reduce complications of therapy, in particular, those associated with surgery and the introduction of antibiotics, remains relevant. The aim of this study is to evaluate the effectiveness of the use of autoprobiotics based on indigenous non-pathogenic strains of and as a personalized functional food product (PFFP) in the complex therapy of colorectal cancer (CRC) in the early postoperative period. A total of 36 patients diagnosed with CRC were enrolled in the study.

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Artificial intelligence to predict soil temperatures by development of novel model.

Sci Rep

April 2024

Department of Civil Engineering and Construction, Faculty of Engineering and Design, Atlantic Technological University, Sligo, F91 YW50, Ireland.

Soil temperatures at both surface and various depths are important in changing environments to understand the biological, chemical, and physical properties of soil. This is essential in reaching food sustainability. However, most of the developing regions across the globe face difficulty in establishing solid data measurements and records due to poor instrumentation and many other unavoidable reasons such as natural disasters like droughts, floods, and cyclones.

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The article presents a rare case of human invasion by the trematode in the European part of Russia. The diagnosis was established based on a parasitological study of flukes removed from the tonsils and pharynx of a 42-year-old woman, a resident of the Tambov region of Russia.

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Objective: To substantiate the use of photochromotherapy (narrow-band optical radiation with an average wavelength of 650 nm) in the complex treatment of children with developmental speech delay on the type of general speech underdevelopment (GSU) of I and II degree.

Material And Methods: A number of children equal 70 aged from 4 to 6 years with developmental speech delay were examined. All patients were randomized into 2 clinically comparable groups: the 1st (study) group included 35 patients who received medical treatment in accordance with clinical recommendations in combination with the use of narrow-band optical radiation with an average wavelength of 650nm for 10 days; the 2nd (comparison) group consisted of 35 subjects who received standard drug therapy according to the established clinical recommendations.

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Unlabelled: New coronavirus infection is registered less frequently in children than in adults. Among all patients with COVID-19, the share of children is 8.6%.

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Endometriosis is characterized by a condition where endometrial tissue grows outside the uterine cavity. The mechanisms of endometrium growth during endometriosis might be similar to the development of a tumor. The kisspeptin (KISS1) gene was initially discovered as a suppressor of metastasis.

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Aim      To evaluate the effect of mitral valve (MV) repair and replacement on the incidence of ventricular arrhythmias (VA) and to identify risk factors for the persistence of VA in patients with MV prolapse and severe mitral regurgitation (MR) during a mid-term follow-up.Material and methods  A single-site observational, prospective study successively enrolled 30 patients (mean age, 55.2±9.

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We present to your attention a case of mature teratoma of the pharynx and nasal cavity in a newborn, which caused severe obstruction of the upper respiratory tract and required emergency action. The article describes the diagnostic algorithm, the choice of optimal treatment tactics, which allowed rehabilitate the child in infancy.

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[Clinical protocol: audiological assessment of infants in Russian Federation. Part II].

Vestn Otorinolaringol

January 2024

Russian Medical Academy for Continuous Professional Education, Moscow, Russia.

This is the second part of the previously published clinical protocol of audiological assessment in infants. The goal of the protocol is unification approaches to audiological diagnosis of the infants. The following sections were included in the second part of the protocol: behavioral testing in infants, testing sequence, duration of the examination and necessity in follow-up, hearing assessment in special cases (premature children, children with congenital infections, after meningitis, with external ear abnormalities, single-sided deafness, with hydrocephalus and shunts, with auditory neuropathy spectrum disorder, with mild hearing loss and otitis media with effusion), medical report.

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Genetic Discrimination of Grade 3 and Grade 4 Gliomas by Artificial Neural Network.

Cell Mol Neurobiol

December 2023

Research Center and Department of Biological Chemistry, St. Petersburg State Pediatric Medical University, Saint Petersburg, 194100, Russia.

Gliomas, including anaplastic gliomas (AG; grade 3) and glioblastomas (GBM; grade 4), are malignant brain tumors associated with poor prognosis and low survival rates. Current classification systems based on histopathology have limitations due to intratumoral heterogeneity. The treatment and prognosis are distinctly different between grade 3 and grade 4 gliomas patients.

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Impact of Prematurity on Auditory Processing in Children.

Pathophysiology

October 2023

Department of Higher Nervous Activity and Psychophysiology, St. Petersburg State University, 199034 St. Petersburg, Russia.

Prematurity is one of the most crucial risk factors negatively affecting the maturation of the auditory system. Children born preterm demonstrate high rates of hearing impairments. Auditory processing difficulties in preterm children might be a result of disturbances in the central auditory system development and/or sensory deprivation due to peripheral hearing loss.

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[Clinical protocol: audiological assessment of infants in Russian Federation. Part I].

Vestn Otorinolaringol

November 2023

Russian Medical Academy of Continuous Professional Education, Moscow, Russia.

Article Synopsis
  • A clinical protocol for audiological assessment in infants has been developed by a group of Russian pediatric audiologists to standardize diagnostic approaches.
  • The protocol is based on evidence-based medicine principles, incorporating current research and clinical practice guidelines, while allowing for flexibility in individual patient assessment.
  • Key topics covered in the protocol include equipment, staff requirements, diagnostic timing, risk factors, various testing methods, and specifics on preparing infants for audiological evaluations.
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