29,029 results match your criteria: "Bulgaria; National Institute of Immunology[Affiliation]"
Membranes (Basel)
December 2024
Department of Physical Chemistry, Faculty of Chemistry and Pharmacy, Sofia University St. Kliment Ohridski, 1 "James Bourchier" Blvd., 1164 Sofia, Bulgaria.
Poly(butyl cyanoacrylate) (PBCA) nanoparticles have numerous applications, including drug and gene delivery, molecular imaging, and cancer therapy. To uncover the molecular mechanisms underlying their interactions with cell membranes, we utilized a Langmuir monolayer as a model membrane system. This approach enabled us to investigate the processes of penetration and reorganization of PBCA nanoparticles when deposited in a phospholipid monolayer subphase.
View Article and Find Full Text PDFJ Funct Biomater
December 2024
Department of Veterinary Anatomy, Histology and Embryology, Faculty of Veterinary Medicine, Trakia University, 6000 Stara Zagora, Bulgaria.
Background: Supragingival polishing is a crucial part of nonsurgical periodontal therapy. In recent years, air polishing has been used for this purpose, introducing different polishing powders. The purpose of the following study was to investigate the damage to the gingival margin during air polishing by an inexperienced operator.
View Article and Find Full Text PDFMar Drugs
November 2024
Nuclear Research Centre of Birine, Ain Oussera 17200, Algeria.
This study represents the first investigation into the ultrasonic and microwave extraction of bioactive metabolites from (red seaweed) and () (brown seaweed), with a focus on their biological activities. The research compares ultrasound-assisted extraction (UAE) with microwave-assisted extraction (MAE) utilizing a hydromethanolic solvent to evaluate their effects on these seaweeds' bioactive compounds and biological activities. The assessment included a series of antioxidant essays: DPPH, ABTS, phenanthroline, and total antioxidant capacity, followed by enzyme inhibition activities: alpha-amylase and urease.
View Article and Find Full Text PDFCurr Issues Mol Biol
December 2024
Department of Anatomy, Histology and Embryology, Medical Faculty, Medical University Plovdiv, 4002 Plovdiv, Bulgaria.
Epilepsy is a common brain function disorder. The present study aims to evaluate the long-term effect of perampanel (PRM) and lacosamide (LCM), administered singly in a high-dose or in a low-dose combination of both, on comorbid anxiety, cognitive impairment, BDNF, and Cyclin D1 hippocampal expression in an experimental model of temporal lobe epilepsy with lithium-pilocarpine. PRM (3 mg/kg, p.
View Article and Find Full Text PDFGels
December 2024
Department of Pharmaceutical Technology and Biopharmaceutics, Faculty of Pharmacy, Medical University of Sofia, 2 Dunav Str., 1000 Sofia, Bulgaria.
The study investigates the development and characterization of dual-loaded niosomes incorporated into ion-sensitive in situ gel as a potential drug delivery platform for ophthalmic application. Cannabidiol (CBD) and epigallocatechin-3-gallate (EGCG) simultaneously loaded niosomes were prepared via the thin film hydration (TFH) method followed by pulsatile sonication and were subjected to comprehensive physicochemical evaluation. The optimal composition was included in a gellan gum-based in situ gel, and the antimicrobial activity, in vitro toxicity in a suitable corneal epithelial model (HaCaT cell line), and antioxidant potential of the hybrid system were further assessed.
View Article and Find Full Text PDFDent J (Basel)
November 2024
Department of Prosthetic Dentistry, Faculty of Dental Medicine, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria.
: Digital diagnostic waxing is a contemporary alternative to the conventional wax-up method. This study aims to evaluate the impact of both techniques on the perceived frontal symmetry in aesthetic treatment planning. Dental symmetry significantly influences smile perception and, consequently, the acceptance of treatment outcomes, highlighting its clinical importance in restorative dentistry.
View Article and Find Full Text PDFThe Aim Of The Work: The aim of our work was to describe the current epidemiological situation of Hodgkin's lymphoma (HL) with a possible global prediction for the year 2040.
Methods: We obtained data on incidence and mortality of HL using the GLOBOCAN database. The rating was done specifically for men and women and together, with an age range of 0-85+ years.
Georgian Med News
October 2024
1Onkoderma - Clinic for Dermatology, Venereology and Dermatologic Surgery, Sofia, Bulgaria.
Cutaneous cylindromas are rare, slow-growing adnexal tumors commonly found on the capillitium or face. When located on the capillitium, they can cluster together, forming a headgear-like structure that gives the characteristic "turban" appearance. Brooke-Spiegler syndrome, an autosomal dominant condition, is typically benign, though malignant transformation can occur.
View Article and Find Full Text PDFGeorgian Med News
October 2024
1Onkoderma - Clinic for Dermatology, Venereology and Dermatologic Surgery, Sofia, Bulgaria.
Dermatofibrosarcoma protuberans (DFSP) is a rare, low-grade cutaneous sarcoma typically found on the proximal extremities and the trunk, characterized by infiltrative growth and low risk of metastasis. High rates of local recurrence or relatively large tumor sizes can significantly complicate therapeutic management, particularly when 1) surgical intervention is not adequately performed and /or 2 access to newer medications is limited or their high cost imposes a financial burden on patients. We present the case of a 63-year-old male with a histologically confirmed dermatofibrosarcoma protuberans, measuring 6 cm in diameter, located on the right dorsal region, accompanied by several confluent multifocal nodules situated infralaterally to the primary formation.
View Article and Find Full Text PDFInt J Surg
October 2024
Department of Surgery, Sapienza University of Rome, Rome, Italy.
Background: One of the most important surgical steps during thyroidectomy is the safe ligation of vessels. In fact, it is crucial to avoid postoperative bleeding and nerves' injury. The "clamp and tie" technique was first introduced in the 19th century.
View Article and Find Full Text PDFAdv Healthc Mater
December 2024
Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei, Taiwan, 106, P. R. China.
Porous polymers, including hydrogels, covalent organic frameworks (COFs), and hyper crosslinked polymers (HCPs), have become essential in biomedical research for their tunable pore architectures, large surface areas, and functional versatility. This review provides a comprehensive overview of their classification and updated synthesis mechanisms, such as 3D printing, electrospinning, and molecular imprinting. Their pivotal roles in drug delivery, tissue engineering, wound healing, and photodynamic/photothermal therapies, focusing on how pore size, distribution, and architecture impact drug release, cellular interactions, and therapeutic outcomes, are explored.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
Sofia University "St. Kliment Ohridski", Faculty of Biology, Department of Biochemistry, Bulgaria. Electronic address:
C1q, the key component of the classical pathway of the Complement system, is known for its vast functional activity including clearance of apoptotic cells. The binding of C1q to apoptotic blebs occurs via an interaction with the phosphatidylserine externalized on the cell surface. In this study, we characterized the interaction between C1q and phosphatidylserine, with emphasis on the structure of the phosphatidylserine-binding site within the globular domains of C1q and the nature of binding of C1q with phosphatidylserine, using both in vitro and in silico methods.
View Article and Find Full Text PDFAdvances in cancer treatments have significantly improved their effectiveness, yet access to first-line therapies remains limited. A 2017 survey revealed that over 25 % of metastatic melanoma patients in Europe lacked access to recommended therapies. To address this, the European Association of Dermato-Oncology and the European Melanoma Registry conducted a follow-up study on the registration and reimbursement of first-line treatments.
View Article and Find Full Text PDFActa Med Acad
December 2024
Centre for Evidence-Based Medicine and Health Care, Catholic University of Croatia, Zagreb, Croatia. ORCID: 0000-0002-8467-6061.
Objective: This study presents the personal experience of a 19-year-old student who fled the war in Ukraine, journeyed across multiple countries, and ultimately enrolled in a university psychology program in Croatia.
Methods: A collaborative autoethnographic approach was employed to explore the student's experience as a war refugee, traversing Europe, and beginning university life in a foreign country. Data were collected through the student's reflective writing.
PNAS Nexus
January 2025
Department of Sociology, University of Oxford, Oxford OX1 1JD, United Kingdom.
Worldwide, mortality was strongly affected by the COVID-19 pandemic, both directly through COVID-19 deaths and indirectly through changes in other causes of death. Here, we examine the impact of the pandemic on COVID-19 and non-COVID-19 mortality in 24 countries: Australia, Austria, Brazil, Bulgaria, Canada, Chile, Croatia, Czechia, Denmark, England and Wales, Hungary, Japan, Latvia, Lithuania, The Netherlands, Northern Ireland, Poland, Russia, Scotland, South Korea, Spain, Sweden, Switzerland, and the United States. Using demographic decomposition methods, we compare age- and cause-specific contributions to changes in female and male life expectancy at birth in 2019-2020, 2020-2021, and 2021-2022 with those before the COVID-19 pandemic (2015-2019).
View Article and Find Full Text PDFBeilstein J Nanotechnol
December 2024
School of Physics, University of Hyderabad, Hyderabad 500046, Telangana, India.
This work presents a unique and straightforward method to synthesise hafnium oxide (HfO) and hafnium carbide (HfC) nanoparticles (NPs) and to fabricate hafnium nanostructures (NSs) on a Hf surface. Ultrafast picosecond laser ablation of the Hf metal target was performed in three different liquid media, namely, deionised water (DW), toluene, and anisole, to fabricate HfO and HfC NPs along with Hf NSs. Spherical HfO NPs and nanofibres were formed when Hf was ablated in DW.
View Article and Find Full Text PDFEuropace
December 2024
Department of Cardiology, University of Groningen, University Medical Center Groningen, P.O. Box 30.001, 9700 RB Groningen, The Netherlands.
Atrial fibrillation (AF) remains the most common cardiac arrhythmia worldwide and is associated with significant morbidity and mortality. The European Society of Cardiology (ESC)/European Association for Cardio-Thoracic Surgery (EACTS) have recently released the 2024 guidelines for the management of AF. This review highlights 10 novel aspects of the ESC/EACTS 2024 Guidelines.
View Article and Find Full Text PDFArch Public Health
December 2024
GATE Institute, Sofia University "St. Kliment Ohridski", Sofia, 1504, Bulgaria.
Background: With the global population aging rapidly, dementia has become a pressing public health challenge, affecting the cognitive functions and daily activities of older adults worldwide. Enhancing literacy about dementia is a proactive prevention strategy, yet the effectiveness of educational programs can vary based on the target population's background. Thus, understanding dementia knowledge levels across different communities and countries is essential for successful educational interventions.
View Article and Find Full Text PDFRheumatol Int
December 2024
Clinic of Rheumatology, UMHAT "Kaspela", Medical University of Plovaffiliation, 64 Sofia str, Plovaffiliation, 4000, Bulgaria.
Background: Rheumatoid arthritis is a progressive disease that requires continuous treatment. Despite the excellent results, treatment with biologics and target-specific disease-modifying anti-rheumatic drugs often has to be interrupted due to insufficient therapeutic effectiveness, toxicity, or side effects.
Purpose: The purpose of this study is to identify the reasons and factors influencing treatment discontinuation with biologic and target-specific drugs among the Bulgarian patients with rheumatoid arthritis.
Int J Soc Psychiatry
December 2024
Santé publique France, Saint-Maurice, France.
Background: To date, most large surveys on the mental health of children under 11 years old have relied exclusively on data collected from parents and teachers, with no information from children themselves. However, these children are valuable informants despite their young age.
Objective: To evaluate the effects of adding young children's self-evaluation of internalizing disorders to a combined teacher/parent-based algorithm using data from a European survey carried out in Italy, Bulgaria, and in the Netherlands.
SAGE Open Med
December 2024
Haramaya University, College of Health and Medical Sciences, Harar City, Ethiopia.
Background: Adherence to the proper use of protective personal equipment (PPE) in health care facilities including public hospitals is challenging among sanitation workers(SWs) across the world in general and in developing countries in particular. Despite the emphasis inline up on various policies and guidelines for PPE use implementation, inconsistent use of PPE, disobedience to PPE regulations, negligence, ignorance, discomfort, and lacking infection prevention and control (IPC) practice have been identified as main associated factors. All these and other factors contributing for the non-compliance of PPE practice among SWs within the hospitals in nations with limited resources such as Ethiopia, as well as study regions.
View Article and Find Full Text PDFPhysiol Plant
December 2024
Plant Synthetic Biology and Metabolic Engineering Program, Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Cerdanyola, Barcelona, Spain.
Steryl esters (SE) are a storage pool of sterols that accumulates in cytoplasmic lipid droplets and helps to maintain plasma membrane sterol homeostasis throughout plant growth and development. Ester formation in plant SE is catalyzed by phospholipid:sterol acyltransferase (PSAT) and acyl-CoA:sterol acyltransferase (ASAT), which transfer long-chain fatty acid groups to free sterols from phospholipids and acyl-CoA, respectively. Comparative mass spectrometry-based metabolomic analysis between ripe fruits and seeds of a tomato (Solanum lycopersicum cv Micro-Tom) mutant lacking functional PSAT and ASAT enzymes (slasat1xslpsat1) shows that disruption of SE biosynthesis has a differential impact on the metabolome of these organs, including changes in the composition of free and glycosylated sterols.
View Article and Find Full Text PDFRedox Biol
December 2024
Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, UK; Department of Pharmacology and Molecular Sciences and Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Non-communicable chronic diseases (NCDs) are most commonly characterized by age-related loss of homeostasis and/or by cumulative exposures to environmental factors, which lead to low-grade sustained generation of reactive oxygen species (ROS), chronic inflammation and metabolic imbalance. Nuclear factor erythroid 2-like 2 (NRF2) is a basic leucine-zipper transcription factor that regulates the cellular redox homeostasis. NRF2 controls the expression of more than 250 human genes that share in their regulatory regions a cis-acting enhancer termed the antioxidant response element (ARE).
View Article and Find Full Text PDFArthritis Res Ther
December 2024
Memorial Herman Northwest Hospital, Houston, TX, 77089, USA.
Objectives: To assess immunogenicity and safety in patients with active rheumatoid arthritis (RA) transitioning from rituximab [US-licensed rituximab: Reference Product (RP); EU-approved rituximab: Reference Medicinal Product (RMP)] to DRL_RI (proposed rituximab biosimilar), in comparison to those continuing on RP/RMP.
Methods: This double-blind, randomized, Phase 3 study included 140 RA patients having prior exposure to RP/RMP; transitioned to DRL_RI (n = 70) or continued with RP/RMP (n = 70) for two 1000 mg infusions on Days 1 and 15. Assessments included Time-matched Rituximab Concentration (TMRC), anti-drug antibodies (ADAs), neutralizing antibodies (NAbs) and ADA titre over 12 weeks, and safety follow-up till 26 weeks.
Epilepsia
December 2024
Comprehensive Epilepsy Center, New York University Grossman School of Medicine, New York, New York, USA.
Objective: Randomized controlled trials (RCTs) are necessary to evaluate the efficacy of novel treatments for epilepsy. However, there have been concerning increases in the placebo responder rate over time. To understand these trends, we evaluated features associated with increased placebo responder rate.
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