Publications by authors named "Anna Spiridonova"
Article Synopsis
- Dose-intensive therapies during allogeneic hematopoietic stem cell transplantation (allo-HSCT) significantly disrupt gut microbiota and promote antibiotic resistance, with recovery patterns poorly understood.
- In a study of 12 adult patients, stool samples revealed a marked decline in microbial diversity starting from day 0, persisting for up to a year, with specific bacterial genera showing slower recovery.
- A rise in antibiotic-resistant bacteria was observed around day 30 post-transplant, with resistance to major antibiotic classes, but a gradual decrease in resistance levels was noted over the following year.
Article Synopsis
- * The interaction between AMPs and antiseptics is less studied than AMPs and antibiotics, yet analyzing their combined antibacterial and cytotoxic activities reveals both synergistic and antagonistic effects.
- * Optimizing AMP/antiseptic combinations could enhance treatment efficacy, reduce toxicity, and limit bacterial resistance, but careful evaluation is needed to avoid potential interference that may diminish AMP effectiveness.
The overuse of antibiotics has led to the emergence of resistant bacteria. A good alternative is silver nanoparticles, which have antibacterial activity against Gram-negative and Gram-positive bacteria, including multidrug-resistant strains. Their combination with already known antibiotics has a synergistic effect.
View Article and Find Full Text PDFIntestinal complications are common after allogeneic hematopoietic stem cell transplantation (allo-HSCT). However, only scarce data concern herpesvirus incidence in the colonic mucosa post-HSCT. Our purpose was to assess the frequency and clinical significance of cytomegalovirus (CMV), Epstein−Barr virus (EBV), human herpesvirus type 6 (HHV6), and herpes simplex virus (HSV) in the colonic mucosa post-HSCT.
View Article and Find Full Text PDFIn this study, we aimed to develop a technique for colloidal silver nanoparticle (AgNP) modification in order to increase their stability in aqueous suspensions. For this purpose, 40-nm spherical AgNPs were modified by the addition of either human albumin or Tween-80 (Polysorbate-80). After detailed characterization of their physicochemical properties, the hemolytic activity of the nonmodified and modified AgNPs was investigated, as well as their cytotoxicity and antimicrobial effects.
View Article and Find Full Text PDFObjectives: To predict the spread of coronavirus disease (COVID-19), information regarding the immunological memory for disease-specific antigens is necessary. The possibility of reinfection, as well as the efficacy of vaccines for COVID-19 that are currently under development, will largely depend on the quality and longevity of immunological memory in patients. To elucidate the process of humoral immunity development, we analysed the generation of plasmablasts and virus receptor-binding domain (RBD)-specific memory B (Bmem) cells in patients during the acute phase of COVID-19.
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