Abdominal aortic aneurysm (AAA) is an immune-mediated disease with a genetic component. The multifactorial pathophysiology is not clear and there is still no pharmacotherapy to slow the growth of aneurysms. The signal integration of cell-surface KIRs (killer cell immunoglobulin-like receptors) with HLA (ligands, human leukocyte class I antigen molecules) modulates the activity of natural killer immune cells.
View Article and Find Full Text PDFLung cancer is strongly associated with cigarette smoking; nevertheless some never-smokers develop cancer. Immune eradication of cancer cells is dependent on polymorphisms of HLA class I molecules and antigen-processing machinery (APM) components. We have already published highly significant associations of single nucleotide polymorphisms (SNPs) of the gene with non-small cell lung cancer (NSCLC) in Chinese, but not in Polish populations.
View Article and Find Full Text PDFBackground: Alopecia areata (AA) is the second most common cause of non-scarring alopecia. Little is known on the etiopathogenesis of AA. It is considered an autoimmune disease, with T lymphocytes and antibodies directed against hair follicle structures.
View Article and Find Full Text PDFIntroduction: Psoriasis is a chronic, recurrent, inflammatory skin disorder with systemic involvement. It has recently been established that psoriasis is associated with an increased cardiovascular risk. Chronic skin-specific inflammation may promote atherosclerosis.
View Article and Find Full Text PDFAn effective cytotoxic immune response to neoplastic cells requires efficient presentation of antigenic peptides to T lymphocytes by HLA class I (HLA-I) molecules. The HLA-I-bound peptide repertoire depends on antigen-processing machinery molecules. Aminopeptidase residing in endoplasmic reticulum 1 (ERAP1) trims peptides to the optimal length for HLA-I binding.
View Article and Find Full Text PDFSurgical and endovascular revascularization of ischemic legs in patients with peripheral arterial disease (PAD) can damage the arterial wall (endothelial and smooth muscle cells). Hemostatic factors released during endothelial dysfunction can lead to restenosis. 1.
View Article and Find Full Text PDFBackground/aim: Cancer stem cells (CSCs) constitute a sub-population of tumor cells that possess stem cell properties, such as self-renewal and the ability of differentiation. The presence of CSCs is associated with metastatic potential, treatment resistance and poor patient prognosis. Recently, aberrant expression of P-element induced wimpy testis proteins-PIWI (HIWI and HILI) has been identified in various types of tumors.
View Article and Find Full Text PDFBackground: In patients with peripheral artery disease (PAD) a hypercoagulable state and thromboembolic complications occur. Revascularization procedures increase this state, sometimes leading to restenosis. Restenosis following balloon angioplasty (PTA)and stent implantation is ≥ 50% of artery stenosis.
View Article and Find Full Text PDFArch Immunol Ther Exp (Warsz)
October 2014
The killer immunoglobulin-like receptor (KIR) genes KIR2DL4, KIR3DL2, and KIR3DP1 are present in virtually all humans. KIR2DL4 encodes a receptor present on uterine and decidual natural killer (NK) cells and some peripheral blood NK cells. Its only known ligand is the human leukocyte antigen-G molecule expressed on extravillous trophoblasts, and on tissues in some diseases.
View Article and Find Full Text PDFPatients with abdominal aortic aneurysm (AAA) experience impaired balance between fibrinolysis and coagulation, manifested by increased prothrombotic tendency and intensified inflammatory processes. The aim of this study was to evaluate the TAFI activity level (thrombin activatable fibrinolysis inhibitor) in the plasma of AAA patients. Plasma levels of PAI-1 (plasminogen activator inhibitor type 1), urokinase-type plasminogen activator and uPAR (urokinase-type plasminogen activator receptor) were measured as markers of fibrinolytic activity.
View Article and Find Full Text PDFDespite advances in medicine and biological sciences the cardiovascular diseases (CVD) are still a major cause of morbidity and mortality in societies around the world. It is therefore necessary to improve the treatment methods used so far, to look for new therapeutic targets and specific, clinically useful biomarkers. Classic research related to the circulatory system are primarily concerned with histopathological descriptions of pathophysiological processes, and mapping the structure and expression of genes involved in the development of cardiovascular diseases.
View Article and Find Full Text PDFBackground: Tissue factor (TF), tissue factor pathway inhibitor (TFPI) and vascular endothelial growth factor A (VEGF-A) present in vascular structures take part in blood coagulation and in organ revascularisation. The concentration of thrombin-antithrombin complexes (TAT) in blood of patients with abdominal aortic aneurysms (AAA) reflects thrombin-generation.
Aim: To determine the concentration of TF, TFPI, VEGF-A and TAT complexes in blood of patients with AAA and to consider if these factors after clot formation can play a role in the pathogenesis of abdominal aortic aneurysms.