Breast Cancer and p16: Role in Proliferation, Malignant Transformation and Progression.

The definition of new molecular biomarkers could provide a more reliable approach in predicting the prognosis of invasive breast cancers (IBC). The aim of this study is to analyze the expression of p16 protein in IBC, as well as its participation in malignant transformation. The study included 147 patients diagnosed with IBC.

Clinical and pathological significance of proliferation index and p53 expression in gastric adenocarcinoma.

Purpose: The purpose of our work was to investigate the association between proliferative index [proIDX] and expression index p53 (p53IDX) with the clinical and pathological characteristics of gastric adenocarcinoma.

Methods: The biopsy material of 90 patients operated on for gastric cancer was routinely processed in paraffin and archived. After the histopathological report was made, two study groups were formed, the first group (n=45) comprised biopsies with intestinal carcinoma and the second (n=45) biopsies of diffuse gastric cancer.

Clinical - pathological significance of leptin receptor (LEPR) expression in squamous cell carcinoma of the skin.

Adipokine leptin functions through its transmembrane receptors (LEPR). In many malignant tumors it stimulates the growth, migration and invasion of malignant cells. The aim of our work is to examine the effect of LEPR expression on the clinical-morphological properties of squamous cell carcinoma of the skin (cSCC).

Correlation of Clinicopathological Characteristics of Breast Carcinoma and Depression.

The prevalence of depression among women with breast cancer (BC) is extremely variable in research studies. The aim of this study was to determine the prevalence of depressive disorder in women suffering from BC as well as to examine its relationship with clinical-pathological and immunophenotypic characteristics of BC. The study included 194 patients with BC who were diagnosed with the disease between 2009 and 2015 in the Clinical Center Kragujevac, Serbia.

Assessment of oxidative status in patients with acute kidney injury: a pilot study.

Extensive experimental evidence confirms the role of oxidative stress as a major contributor to the pathogenesis of acute kidney injury (AKI). However, less information is available on the evolution of prooxidant-antioxidant parameters from early to end-phase renal function decline in humans. This study aimed to determine the oxidative status in dynamic throughout the evolutionary phases of the disease.

Expression of vascular endothelial growth factor and microvascular density assessment in different histotypes of basal cell carcinoma.

Purpose: In this study, we investigated the expression of vascular endothelial growth factor (VEGF) and tumor microvascular density (MVD) in different histotypes of basal cell skin carcinoma (BCC).

Methods: We used a total 101 histological archival specimens, including superficial, nodular, cystic, keratinocytic, adenoid infiltrative types and cases of metatypical BCC. Routine hematoxylin/eosin (H&E) and immunohistochemical ABC method with NOT AE1/AE3, anti VEGF anti CD34 antibodies were used.

Oxidative stress in rheumatoid arthritis patients: relationship to diseases activity.

The aim of this study was to assess the oxidative stress status in rheumatoid arthritis (RA) by measuring markers of free radical production, systemic activity of disease, and levels of antioxidant. 52 RA patients and 30 healthy controls were included in the study, and clinical examination and investigations were performed and disease activity was assessed. Peripheral blood samples were used for all the assays.

The effects of homocysteine-related compounds on cardiac contractility, coronary flow, and oxidative stress markers in isolated rat heart.

Research on the effects of homocysteine on the vascular wall, especially in endothelial and smooth muscle cells, has indicated that increased homocysteine levels lead to cellular stress and cell damage. Considering the adverse effects of homocysteine on vascular function and the role of oxidative stress in these mechanisms, the aim of this study was to estimate the influence of different homocysteine isoforms on cardiac contractility, coronary flow, and oxidative stress markers in isolated rat heart. The hearts of male Wistar albino rats (n = 36, age 8 weeks, body mass 180-200 g), were excised and retrogradely perfused according to the Langendorff technique at a constant perfusion pressure (70 cmH(2)O) and administered with three isoforms of 10 μM homocysteine [DL-Hcy, DL-Hcy thiolactone-hydrochloride (TLHC) and L-Hcy TLHC).

Comparison of blood pro/antioxidant levels before and after acute exercise in athletes and non-athletes.

The aims of our study were to assess the redox state of adolescent athletes and non-athletes both at rest and after acute exposure to physical load and to find relations between parameters of redox state and morphofunctional characteristics of subjects. 58 young handball players and 37 non-athletes were subjected to body composition analysis, measuring of maximal oxygen consumption and blood sampling immediately before and after a maximal progressive exercise test. At rest, athletes had significantly higher superoxide dismutase (SOD) and catalase (CAT) activity, higher levels of glutathione (GSH) and nitric oxide (NO) and lower levels of lipid peroxidation (TBARS) compared with non-athletes.

[Place and role of von Willebrand factor in acute coronary syndromes].

Introduction: Advanced understanding of the pathophysiology of ACS has led to the marked increase in development of biomarkers for diagnosis, risk stratification, therapeutic decision-making, and assessment of clinical outcomes, but there is still a need for a marker that could verify or exclude the existence of acute coronary syndrome as early as possible. The aim of our study was to assess the value of von Willebrand factor as a potential marker of heart necrosis in early diagnosis of acute coronary syndrome.

Material And Methods: One hundred fifteen patients were taken a blood sample on the first day after being diagnosed to have an acute coronary syndrome in order to determine the values of their von Willebrand factor antigen and von Willebrand factor activity.

Von Willebrand factor and oxidative stress parameters in acute coronary syndromes.

Considering the role of von Willebrand factor (vWf) in hemostasis, and the role of oxidative stress in the development of endothelial dysfunction and atherosclerotic disease, the aim of our study was to investigate the relationship between vWf, parameters of oxidative stress and different types of acute coronary syndromes (ACS). Levels of vWf activity (vWfAct), vWf antigen (vWfAg), nitric oxide (estimated through nitrites-NO(2)-), superoxide anion radical (O(2)-), hydrogen peroxide (H2O2), index of lipid peroxidation (estimated through thiobarbituric acid reactive substances-TBARS), superoxide dismutase (SOD) and catalase (CAT) activity of 115 patients were compared with those of 40 healthy controls. ACS patients had significantly higher vWfAct and vWfAg levels, as well as TBARS levels, while their levels of NO(2)-, H2O2, SOD and CAT activities were lower than controls'.

Oxidative stress in fetal distress: potential prospects for diagnosis.

Our aim was to investigate the relation between fetal distress and oxidative stress. Fetal distress was associated with increased concentration of superoxide in the fetal blood and with significant increase of the level of H2O2 in both maternal and fetal blood. The activity of superoxide dismutase was increased roughly sixfold (p<0.