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INTRODUCTION: Over the last few decades, electromagnetic pollution from generated electromagnetic fields increases. Particularly important from the point of view of our health is the exposure to extremely low frequency electromagnetic fields (ELF‑EMF). ELF‑EMF is derived from many man-made sources, including power transmission lines or transformers. The effects induced by ELF-EMF exposure on biological...
INTRODUCTION: An electromagnetic field is a factor that people are exposed to constantly, from various sources. Thus, the interest in its influence on living organisms increases. AIM(S): The aim of this work was to investigate the long‑term effects of an extremely low frequency electromagnetic field 50 Hz (ELF-EMF) on stress-related behaviour. METHOD(S): Adult male Wistar rats were exposed to ELF‑EMF...
INTRODUCTION: The neuronal cell death associated with perinatal anoxia plays a significant role in neonatal morbidity and neurodevelopmental disability. In response to mild stress, a number of compensatory mechanisms are activated, which allows the cells to survive. Beside decreased body temperature, brain-derived neurotrophic factor (BDNF) is also considered to be beneficial to neuronal survival...
INTRODUCTION: Complications after neonatal asphyxia are the most common cause of subsequent neurological disorders. Transcriptional hypoxia‑inducible factor‑1α (HIF‑1α) plays the fundamental role in adaptive processes in response to hypoxia. Moreover, the most crucial role in neuronal plasticity is attributed to brain-derived neurotrophic factor (BDNF). Newborn mammals showing reduced physiological...
Purpose: The paper presents the results of microstructure and mechanical properties of composites resulting from a combination of powders of metallic glasses with an epoxy resin (Epidian 100). The study was performed using computed tomography. Design/methodology/approach: The filler used was made of a Fe65Co10Ni3W2B20 amorphous alloy based on, showing in the state after the formation the soft magnetic...
Purpose: Objective of the paper was to determine the effect of particle size fraction for the mechanical properties of powders and magnetic fields produced powder consisting of ironbased alloys and an epoxy resin (trade name Epidian 100) which was obtained as a result of press. Design/methodology/approach: Samples were produced by the method of singleunilateral pressing. To achieve the pursued objective,...
BACKGROUND AND AIMS: Complications after neonatal asphyxia are the most common cause of subsequent neurological disorders. The mechanism involved in brain damage is closely associated with abnormal iron metabolism that is a cofactor of free-radical reactions. There is a number of evidence that one of the endogenous processes that protect the brain from damage due to perinatal hypoxia is decreasing...
Numerous reports indicate close interactions between the neuroendocrine and the immune systems. Hypothalamic neuropeptide, growth hormone-releasing hormone (GHRH) stimulates growth hormone (GH) secretion from the anterior pituitary gland, but recently some immunomodulatory properties of this peptide have also been demonstrated. In the present studies we evaluated the effect of human synthetic GHRH(1-44)NH...
Angiogenesis plays a key role in solid tumor formation, invasiveness and metastasis. Vascular endothelial growth factor (VEGF) is an endothelial cell-specific mitogen that is necessary in the process of neovascularisation. Antagonists of growth hormone-releasing hormone (GH-RH) have been shown to suppress both in vivo and in vitro growth and metastasis of many human cancer cell lines. The mechanisms...
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