Publications by authors named "Zdenko Kovac"

Background: Oxygen therapy in preterm neonates is associated with airway hyperreactivity. The role of Rho/Rho-kinase smooth muscle signaling in hyperoxia-induced airway hyperreactivity remains understudied. We hypothesized that inhibition of Rho-kinase will attenuate airway hyperreactivity induced by neonatal hyperoxia.

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Complexity, variability, nonlinearity and adaptive alterations in human health and disease are considered within the integral body physiology. Sokolić's principles and Koshland's pillars of life are referred as a conceptual frameworks for the whole-body performance. Disease pathways and etiopathogenetic clusters (EPCs) form networks.

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Background: Apoptosis inhibition is a major tumorigenic factor. Bcl-2 dysregulation and TP53 mutation status, which may correlate with autoantibody generation, contribute to impaired apoptosis.

Objective: This study aimed to investigate the prognostic value of circulating Bcl-2 and anti-p53 antibodies (p53Abs) in a 17.

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The physician is the central figure in practical medicine. The biomedical researcher is the central figure in scientific investigation of biomedical phenomena. Both sides contribute to understanding of physiology of health and disease.

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Human physiology is a complex, nonlinear, self-regulated system, in which multiple functional subsystems act within the whole body reactivity. Understanding of physiology and pathophysiology requires integration of both clinical and basic factual knowledge and regulatory homeodynamic concepts. Two integrative methods have been developed to improve understanding of disease processes and natural development.

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University level of Pathophysiology research and teaching in Croatia had started with the third year of Medical School of Zagreb in academic year 1919./20. Ever since, despite historical changes of the main university stake holder, the state of Croatia, Department of Pathophysiology development progressed and has made visible academic achievements, with a broader effect in medical community.

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Finite disarrangements of important (vital) physiological agents and nutrients can induce plethora of beneficial effects, exceeding mere attenuation of the specific stress. Such response to disrupted homeostasis appears to be universally conserved among species. The underlying mechanism of improved fitness and longevity, when physiological agents act outside their normal range is similar to hormesis, a phenomenon whereby toxins elicit beneficial effects at low doses.

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Aims And Background: Urokinase-type plasminogen activator (uPA) and plasminogen activator inhibitor (PAI-1) are key molecules in pericellular proteolysis, a process that plays an important role in tumor invasion and metastasis. In the current study we investigated the prognostic significance of uPA and PAI-1 in primary invasive breast cancer.

Methods And Study Design: uPA and PAI-1 antigen levels were determined by enzyme-linked immunosorbent assay in cytosols of 177 invasive ductal carcinoma specimens.

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The aim of our study was to evaluate the pro- and anti-inflammatory cytokine response during acute pancreatitis and its predictive value on severity of disease. A hospital-based prospective clinical study was conducted. Twenty patients with acute pancreatitis were enrolled during a 12-month period.

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Pericellular proteolysis is a cascade process involved in degradation of extracellular matrix. This process is included in various physiological and pathological processes. Pericellullar proteolysis has major functions like degradation of tissue stroma and weakening of intercellular connections but it also has a function in the synthesis of bioactive molecules (cytokines, growth factors and inhibitory factors).

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Vitamin D deficiency is associated with secondary hyperparathyroidism, increased bone turnover, and bone loss, leading to increased risk for osteoporotic fractures. The objective of this study was to investigate the prevalence of inadequate (insufficient or deficient) serum vitamin D levels in Croatian postmenopausal women initially screened for osteoporosis. Assessment of 25-hydroxyvitamin D (25(OH)D) was performed in 120 Croatian postmenopausal women aged > or =50 years.

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Reperfusion of ischaemic tissue provides oxygen and substrates that are necessary for tissue recovery and concurrently removes toxic metabolites. However, reperfusion may induce various detrimental processes that may cause further tissue damage. Such deterioration of tissue function after reperfusion is defined as ischaemia-reperfusion injury.

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Macromolecular oxidative alterations have been analysed in vitro in anisotonic suspensions of mouse splenocytes. Both hypertonicity and hypotonicity induced the generation of thiobarbituric acid reactive species (TBARS) and carbonylation of the proteins, which took place along with cell death. Addition of antioxidants partially inhibited oxidative changes in isotonic and hypotonic suspensions.

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