Publications by authors named "Katerina Todorova"

Article Synopsis
  • * Researchers developed a new coating for urinary catheters using silver-phenolated lignin nanoparticles and poly(carboxybetaine) that prevents bacteria and biofilms without using traditional antibiotics.
  • * The new coating demonstrated effective reduction of bacterial growth and protein adhesion while being biocompatible, maintaining its protective properties for over a week in both lab and animal tests.
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Article Synopsis
  • * The risk of bacterial colonization increases with how long catheters are in place, as this allows biofilms to form, making infection nearly unavoidable during medical procedures.
  • * Researchers have developed an innovative antibacterial coating using silver/gold nanoparticles and a bioadhesive derived from dopamine-modified gelatin that significantly reduces biofilm formation and prevents infections better than standard silicone catheters.
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Hemocyanins are oxygen-transporting glycoproteins in the hemolymph of some invertebrate species that attracted scientific interest as potential anticancer agents. The present study aims to assess the and anticancer activity of hemocyanins isolated from , , and in the Graffi myeloid tumor model. The antitumor activity of the hemocyanins was determined by a MTT test and cytomorphological analysis by fluorescent and transmission electron microscopy.

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Purpose: Dystrophin and the dystrophin glycoprotein complex serve as a cytoskeletal integrator, critical for muscle membrane stability. The aim of the present study was to clarify the expression of dystrophin protein and mRNA in the skeletal muscle tissue during the muscle phase of trichinellosis in mice.

Methods: Muscle tissue was collected from mice experimentally infected with Trichinella spiralis at days 0, 14 and 40 after infection.

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The study reports the synthesis and characterization of novel triple stimuli responsive interpenetrating polymer network (IPN) based on two polyzwitterionic networks, namely of poly(carboxybetaine methacrylate) and poly(sulfobetaine methacrylate). The zwitterionic IPN hydrogel demonstrates the ability to expand or shrink in response to changes in three "biological" external stimuli such as temperature, pH, and salt concentration. The IPN hydrogel shows good mechanical stability.

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Catheter-associated urinary tract infections (CAUTIs), caused by biofilms, are the most frequent health-care associated infections. Novel antibiofilm coatings are needed to increase the urinary catheters' life-span, decrease the prevalence of CAUTIs and reduce the development of antimicrobial resistance. Herein, antibacterial zinc oxide nanoparticles (ZnO NPs) were decorated with a biofilm matrix-degrading enzyme amylase (AM) and simultaneously deposited onto silicone urinary catheters in a one-step sonochemical process.

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Chronic wounds represent a major health burden and drain on medical system. Efficient wound repair is only possible if the dressing materials target simultaneously multiple factors involved in wound chronicity, such as deleterious proteolytic and oxidative enzymes and high bacterial load. Here we develop multifunctional hydrogels for chronic wound management through self-assembling of thiolated hyaluronic acid (HA-SH) and bioactive silver-lignin nanoparticles (Ag@Lig NPs).

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Hemocyanins are oxygen-transporting glycoproteins in the hemolymph of arthropods and mollusks that attract scientific interest with their diverse biological activities and potential applications in pharmacy and medicine. The aim of the present study was to assess the in vitro antitumor activity of hemocyanins isolated from marine snail (RvH) and garden snails (HlH) and (HaH), as well the mucus of snails, in the HT-29 human colorectal carcinoma cell line. The effects of the hemocyanins on the cell viability and proliferation were analyzed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and the alterations in the tumor cell morphology were examined by fluorescent and transmission electron microscopy.

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The aim of this study was to investigate the role of human herpesvirus-6 (HHV-6) in autoimmune thyroiditis (AIT) development. We examined the possible involvement of HHV-6 gene expression encoding immunomodulating proteins U12 and U51 in AIT development and their role in the modulation of chemokine signaling. One hundred patients with autoimmune thyroiditis following thyroidectomy were enrolled in this study.

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The sialylation of the glycoproteins in skeletal muscle tissue is not well investigated, even though the essential role of the sialic acids for the proper muscular function has been proven by many researchers. The invasion of the parasitic nematode in the muscles with subsequent formation of Nurse cell-parasite complex initiates increased accumulation of sialylated glycoproteins within the affected area of the muscle fiber. The aim of this study is to describe some details of the α-2,6-sialylation in invaded muscle cells.

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Introduction: Pathomorphological changes in the lungs, stomach, and small intestines of wild boars infected with spp., , and were investigated.

Material And Methods: Dissection of 11 wild boars was performed, and parasitised organs were histologically investigated by common techniques.

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