Agata Jęczmyk

Ms. Agata Jęczmyk


Research Focus & Metrics

Academic Career Length

3Years (2024-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
Verified
Journal Article
Open access
PDF file
PKPaweł Kowalczyk
Paweł Kowalczyk
SKSebastian Krych
Sebastian Krych
KKKarol Kramkowski
Karol Kramkowski
AJAgata Jęczmyk
Agata Jęczmyk
THTomasz Hrapkowicz
Tomasz Hrapkowicz
The literature analysis conducted in this review discusses the latest achievements in the identification of cardiovascular damage induced by oxidative stress with secondary platelet mitochondrial dysfunction. Damage to the platelets of mitochondria as a result of their interactions with reactive oxygen species (ROS) and reactive nitrogen species (RNS) can lead to their numerous ischemic events associated with hypoxia or hyperoxia processes in the cell. Disturbances in redox reactions in the platelet mitochondrial membrane lead to the direct oxidation of cellular macromolecules, including nucleic acids (DNA base oxidation), membrane lipids (lipid peroxidation process) and cellular proteins (formation of reducing groups in repair proteins and amino acid peroxides). Oxidative changes in biomolecules inducing tissue damage leads to inflammation, initiating pathogenic processes associated with faster cell aging or their apoptosis. The consequence of damage to platelet mitochondria and their excessive activation is the induction of cardiovascular and neurodegenerative diseases (Parkinson’s and Alzheimer’s), as well as carbohydrate metabolism disorders (diabetes). The oxidation of mitochondrial DNA can lead to modifications in its bases, inducing the formation of exocyclic adducts of the ethano and propano type. As a consequence, it disrupts DNA repair processes and conduces to premature neoplastic transformation in critical genes such as the p53 suppressor gene, which leads to the development of various types of tumors. The topic of new innovative methods and techniques for the analysis of oxidative stress in platelet mitochondria based on methods such as a nicking assay, oxygen consumption assay, Total Thrombus formation Analysis System (T-Tas), and continuous-flow left ventricular assist devices (CF-LVADs) was also discussed. They were put together into one scientific and research platform. This will enable the facilitation of faster diagnostics and the identification of platelet mitochondrial damage by clinicians and scientists in order to implement adequate therapeutic procedures and minimize the risk of the induction of cardiovascular diseases, including ischemic events correlated with them. A quantitative analysis of the processes of thrombus formation in cardiovascular diseases will provide an opportunity to select specific anticoagulant and thrombolytic drugs under conditions of preserved hemostasis.

Verified
Journal Article
Open access
PDF file
SKSebastian Krych
Sebastian Krych
AJAgata Jęczmyk
Agata Jęczmyk
MJMichał Jurkiewicz
Michał Jurkiewicz
MŻMartyna Maria Żurek
Martyna Maria Żurek
MJMałgorzata Jekiełek
Małgorzata Jekiełek
THTomasz Hrapkowicz
Tomasz Hrapkowicz
Myocarditis (MC) is defined as an immunological inflammatory reaction with various etiologies, clinical presentations and prognoses within the myocardium. Currently, parvovirus B19 (PVB19) has become the main factor leading to this disease, replacing the previously dominant viruses A and B. In the case of chronic heart failure with subsequent dilated cardiomyopathy, approximately 67% have a viral etiology, and most of them are the result of PVB19 infection. However, the analysis showed a correlation between PVB19 infection and the risk of developing inflammatory dilated cardiomyopathy (DCMi). PVB19 is detected in 23% of patients with DCMi. Chronic infection may also contribute to progressive left ventricular failure in patients with a history of MC. The above effect suggests the active replication of PVB19 only in heart biopsies with inflammation due to MC or DCMi. Moreover, the supply of IFN-β to suppress the active transcription of PVB19 accompanied by DCMi over a period of 6 months results in the normalization of NT-proBNP and an improvement in LVEF along with NYHA performance. The small number of reports on this topic and inaccuracies resulting from constantly conducted research and ongoing changes make it impossible to clearly answer the question of whether PVB19 is a factor inducing de novo MC and DCM or only accompanies the above conditions. However, large clinical cohort studies lead to the perception of PVB19 as a viral etiological agent capable of causing de novo MC together with DCMi.

6 December 2024 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
AJAgata Jęczmyk
Agata Jęczmyk
SKSebastian Krych
Sebastian Krych
MJMałgorzata Jekiełek
Małgorzata Jekiełek
MJMichał Jurkiewicz
Michał Jurkiewicz
PKPaweł Kowalczyk
Paweł Kowalczyk
THTomasz Hrapkowicz
Tomasz Hrapkowicz
Median sternotomy is one of the most common procedures in cardiac surgery. This corresponds to the relatively high frequency of infections where surgical incisions are performed. In the prevention of healing disorders, the medical staff intervention is important, as is the patient. The management of wound infection after sternotomy requires a holistic approach. It requires the implementation of adequate antibiotic therapy, surgical treatment of the wound, and, if necessary, reconstruction of tissue defects using skin, muscle, and skin–muscle grafts or greater omentum. The prevention of surgical site infection should be based on asepsis and antisepsis at every stage of surgical treatment; the elimination of modifiable risk factors; and an appropriate, staged, and tension-free technique of chest closure. The described actions are aimed at avoiding the most serious complication associated with a high mortality rate in the form of mediastinitis. The therapeutic procedures are strictly dependent on the degree of tissue involvement and the presented clinical manifestation. During the preparation of this manuscript, scientific publications available on the Pubmed platform were analyzed. The scope of the search was limited to the years 2014–2024. The key words were “sternotomy wound infection”. A total of 114 publications were analyzed, and 56 of them were included. A total of 23 papers were used to discuss the topic.