Publications by authors named "Monika Maredziak"

The PRHD@MnFeO binary hybrids have shown a potential for applications in the biomedical field. The polymer cover/shell provides sufficient surface protection of magnetic nanoparticles against adverse effects on the biological systems, e.g.

View Article and Find Full Text PDF

Background: Recently, a new disease phenotype characterized by supra-normal left ventricular ejection fraction (snLVEF) has been suggested, based on large datasets demonstrating an increased all-cause mortality in individuals with an LVEF > 65%. The underlying mechanisms of this association are currently unknown.

Methods: A total of 1367 patients (352 women, mean age 63.

View Article and Find Full Text PDF

Aims: There are significant sex-specific differences in left ventricular ejection fraction (LVEF), with a higher LVEF being observed in women. We sought to assess the clinical relevance of an increased LVEF in women and men.

Methods And Results: A total of 4632 patients from the CONFIRM (COronary CT Angiography EvaluatioN For Clinical Outcomes: An InteRnational Multicenter) registry (44.

View Article and Find Full Text PDF
Article Synopsis
  • - The study investigates the link between emotional processing in the brain (amygdala) and heart function in women, revealing a significant relationship between increased amygdalar activity and impaired heart function, which wasn't found in men.
  • - Researchers analyzed data from 294 patients and discovered that women showed a positive correlation between amygdala metabolism and bone marrow inflammation, while this association wasn't present in men.
  • - The findings suggest that heightened brain activity related to emotions in women is connected to inflammation and worsened heart function, indicating the need to consider emotional and inflammatory factors in assessing cardiovascular health for women.
View Article and Find Full Text PDF

Background Increasing evidence suggests a psychosomatic link between neural systems and the heart. In light of the growing burden of ischemic cardiovascular disease across the globe, a better understanding of heart-brain interactions and their implications for cardiovascular treatment strategies is needed. Thus, we sought to investigate the interaction between myocardial injury and metabolic alterations in central neural areas in patients with suspected or known coronary artery disease.

View Article and Find Full Text PDF

Background: Sexual dimorphism in the manifestation of coronary artery disease (CAD) has unleashed a call to reconsider cardiovascular risk assessment. Alterations of bone mineral density (BMD) have been associated with congestive heart failure and appear to be modified by sex. However, the sex-specific association between BMD, myocardial perfusion, and cardiovascular outcomes is currently unknown.

View Article and Find Full Text PDF

Background: Although women with cardiovascular disease experience relatively worse outcomes as compared to men, substantial knowledge gaps remain regarding the unique female determinants of cardiovascular risk. Heart rate (HR) responses to vasodilator stress mirror autonomic activity and may carry important long-term prognostic information in women.

Methods And Results: Hemodynamic changes during adenosine stress were recorded in a total of 508 consecutive patients (104 women) undergoing clinically indicated N-ammonia Positron-Emission-Tomography (PET) at our institution.

View Article and Find Full Text PDF

Background:  Inflammation plays a fundamental role in mediating all stages of atherosclerosis. Given the higher prevalence of inflammatory rheumatologic conditions in women and the female propensity towards worse cardiovascular outcomes, refined strategies are needed to better identify the high-risk female cardiovascular phenotype.

Objectives:  This article aims to assess sex-specific links between inflammatory processes and the development and progression of ischemic heart disease.

View Article and Find Full Text PDF

Aim: Amongst patients with coronary artery disease (CAD), women experience relatively worse outcomes as compared to men. Evidence to date has failed to explore unique female imaging targets as major determinants of cardiovascular risk. We sought to assess the prognostic value of epicardial (EFV) and intrathoracic fat volume (IFV) quantification in women and men with suspected and known CAD.

View Article and Find Full Text PDF

Aims: Cardiovascular outcomes of women with coronary artery disease (CAD) are perceived as relatively worse when compared to men. Amygdalar metabolic activity has recently been shown to independently predict cardiovascular events in patients without known cardiovascular disease. Given that traditional algorithms for risk prediction perform worse in women than in men, we sought to assess sex-specific associations between amygdalar metabolic activity and cardiac dysfunction with suspected or known CAD.

View Article and Find Full Text PDF

Purpose: Evidence to date has failed to adequately explore determinants of cardiovascular risk in women with coronary microvascular dysfunction (CMVD). Heart rate responses to adenosine mirror autonomic activity and may carry important prognostic information for the diagnosis of CMVD.

Methods: Hemodynamic changes during adenosine stress were analyzed in a propensity-matched cohort of 404 patients (202 women, mean age 65.

View Article and Find Full Text PDF

Enhanced sympathetic nervous system activity is associated with increased mortality in many cardiac conditions including heart failure and coronary artery disease (CAD). To ensure adequate image quality of coronary CT angiography (CCTA), pre-scan β-adrenergic blockers (BB) are routinely administered. It is currently unknown whether sensitivity to sympathicolytic compounds is associated with severity of CAD.

View Article and Find Full Text PDF

Background: Pre-hospital delays have been associated with poor outcomes in patients with acute ST-elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PCI). It is currently unknown how environmental variables affect treatment delays in these patients.

Methods And Results: The association between environmental variables, time to treatment including transportation times and adverse in-hospital events was assessed in 1828 consecutive patients with STEMI undergoing primary PCI between 2010 and 2014 in the Montreal metropolitan area.

View Article and Find Full Text PDF

Background: Sexual dimorphism in cardiac sympathetic outflow has recently gained attention in the context of Takotsubo cardiomyopathy. Previous studies suggest that there are sex- and age-dependent differences in peripheral autonomic control, however, data on cardiac-specific sympathetic activation in aged women and men are lacking.

Methods And Results: Regional quantitative analysis of cardiac fluorine-18 (18F)- Dihydroxyphenylalanine (DOPA) uptake was retrospectively performed in 133 patients (69 females, mean age 52.

View Article and Find Full Text PDF

This study investigated in vitro effects of freshwater alga water extract enriched during a biosorption process in Cr(III) trivalent chromium and chromium picolinate on adipose-derived mesenchymal stromal stem cells (ASCs) and extracellular microvesicles (MVs) in equine metabolic syndrome-affected horses. Chemical characterisation of natural was performed with special emphasis on: vitamin C, vitamin E, total phenols, fatty acids, free and protein-bound amino acids as well as measured Cr in algal biomass. To examine the influence of water extracts, in vitro viability, oxidative stress factor accumulation, apoptosis, inflammatory response, biogenesis of mitochondria, autophagy in ASCs of EMS and secretory activity manifested by MV release were investigated.

View Article and Find Full Text PDF

Introduction: In the current study, we investigated the effect of low magnitude, low frequency (LMLF) mechanical vibrations on the osteogenic differentiation potential of human adipose derived mesenchymal stem cells (hASC), taken from elderly patients.

Methods: During 21 days in osteogenic culture medium, cells were periodically exposed to three different frequencies (25, 35 and 45 Hz) of continuous sinusoidal oscillation, using a vibration generator. We measured cell proliferation, cell morphology, calcium and phosphorus deposition using Almar Blue assay, fluorescence microscopy, scanning electron microscopy, and a EDX detector, respectively.

View Article and Find Full Text PDF
Article Synopsis
  • Spinal cord injuries often need both nerve and bone regeneration, and hydroxyapatites are promising materials for spinal surgery due to their biocompatibility and ability to support bone growth.!* -
  • This study introduces a method for creating nanocrystalline calcium hydroxyapatites modified with lithium ions (nHAP:Li), which not only show favorable physical properties but also have potential as a theranostic agent when doped with europium.!* -
  • In vitro tests indicated that nHAP:Li enhances the proliferation and viability of key human cells used in spinal injury therapies, suggesting its potential role in personalized regenerative medicine for spinal cord injuries.!*
View Article and Find Full Text PDF

The aim of the study was to investigate the effect of using direct electric current (DC) of 0, 200, and 400 mA for five minutes on the physiochemical properties, cytotoxicity, antibacterial, and antioxidant activity of sodium alginate hydrosols with different sodium chloride concentrations. The pH, oxidation-reduction potential (ORP), electrical conductivity (EC), and available chlorine concentration (ACC) were measured. The effect of sodium alginate hydrosols treated with DC on , , , , , , , , and RAW 264.

View Article and Find Full Text PDF

Human adipose tissue is a great source of adult mesenchymal stem cells (MSCs) which are recognized from their ability to self-renew and differentiation into multiple lineages. MSCs have promised a vast therapeutic potential in treatment many diseases including tissue injury and immune disorders. However, their regenerative potential profoundly depends on patients' age.

View Article and Find Full Text PDF

Cartilage and bone tissue injuries are common targets in regenerative medicine. The degeneration of cartilage tissue results in tissue loss with a limited ability to regenerate. However, the application of mesenchymal stem cells in the course of such condition makes it possible to manage this disorder by improving the structure of the remaining tissue and even stimulating its regeneration.

View Article and Find Full Text PDF

Adipose-derived mesenchymal stem cells (ASC) hold great promise in the treatment of many disorders including musculoskeletal system, cardiovascular and/or endocrine diseases. However, the cytophysiological condition of cells, used for engraftment seems to be fundamental factor that might determine the effectiveness of clinical therapy. In this study we investigated growth kinetics, senescence, accumulation of oxidative stress factors, mitochondrial biogenesis, autophagy and osteogenic differentiation potential of ASC isolated from horses suffered from equine metabolic syndrome (EMS).

View Article and Find Full Text PDF

The aim of this work was to investigate the effects of 0.5T static magnetic field (sMF) on the viability and proliferation rate of human adipose-derived mesenchymal stromal stem cells (hASCs) via activation of the phosphoinositide 3-kinase/Akt (PI3K/Akt) signaling pathway. In a 7-d culture we examined cell growth kinetic and population doubling time (PDT).

View Article and Find Full Text PDF

Due to its pleiotropic effects, the commonly used drug metformin has gained renewed interest among medical researchers. While metformin is mainly used for the treatment of diabetes, recent studies suggest that it may have further application in anticancer and antiaging therapies. In this study, we investigated the proliferative potential, accumulation of oxidative stress factors, and osteogenic and adipogenic differentiation potential of mouse adipose-derived stem cells (MuASCs) isolated from mice treated with metformin for 8 weeks.

View Article and Find Full Text PDF

Polymeric biomaterials based on polyurethane and polylactide blends are promising candidates for regenerative medicine applications as biocompatible, bioresorbable carriers. In current research we showed that 80/20 polyurethane/polylactide blends (PU/PLDL) with confirmed biological properties may be further improved by the addition of ZnO nanoparticles for the delivery of bioactive zinc oxide for cells. The PU/PLDL blends were doped with different concentrations of ZnO (0.

View Article and Find Full Text PDF