Background: The benefit of probiotics in newborn children in relation to allergy and general morbidity later in life appears to be controversial. Allergic diseases represent an increasingly important health problem worldwide in recent years. This is evident in all age groups.
View Article and Find Full Text PDFPhysiol Res
December 2018
Pain increased the number of free radicals in the body. Previously, we studied changes mainly in oxygen and nitroxide free radicals and described these changes relative to the lipids and saccharides. In this article we focus on changes relative to proteins.
View Article and Find Full Text PDFNeuro Endocrinol Lett
February 2018
Amyotrophic Lateral Sclerosis (ALS) is one of the most dangerous and least understood diseases with a pathophysiology that is still largely unknown. In this article we try to provide a pathophysiological explanation of the etiological, pathogenetic, and clinical aspects of ALS. After a description of the rather complicated classification of the disease, we continue with an evaluation of its clinical presentation.
View Article and Find Full Text PDFChronic fatigue syndrome - CFS is a disease that lasts about 6 months in adults and in children three months. Other names are myalgia encephalomyelitis, postviral immune syndrome, chronic fatigue immune dysfunction syndrome. The reasons are biological, genetical, infectious or psychological.
View Article and Find Full Text PDFObjectives: The aim of the study was to demonstrate the ability to measure free radicals and singlet oxygen, using EPR methods, in the tail of anaesthetized rats. The advantage of this method lies in the potential for continuous evaluation of free radicals and singlet oxygen during nociceptive processes.
Methods: Electron paramagnetic (spin) resonance (EPR/ESR) was used.
Antioxidants and trace elements are using by hundreds millions of people. Effective are especially mixtures of antioxidants. Usually is declared only the composition of the tablets, but nowadays it is not satisfactory.
View Article and Find Full Text PDFFree radicals in otorhinolaryngology participate in the pathogenesis of many diseases. Antioxidants can act or preventively or ameliorate the diseases. Oxidative stress, in which is the predominance of free radicals to antioxidants, is present in many states like inflammation, atherosclerosis or tumors.
View Article and Find Full Text PDFSport performance is followed by a high production of free radicals. The main reasons are reperfusion after the previous imbalance between the increased need of the organism and the ability of blood supply by oxygen, increased production of ATP, decomposition of the cells particularly white blood cells, oxidation of the purin basis from DNA, stress, output of epinephrine release of free iron, increased temperature in the muscle and its inflammation, and the reception of free radicals from external environment. Peroxidation of lipids, proteins, DNA and other compounds follows the previous biochemical steps.
View Article and Find Full Text PDFThe concentrations of ROS were measured in samples of the sensorimotor brain cortex and in the rat blood. We measured the following parameters: The six lines spectra, nitroxide radical, free hydroxyl radical and singleton oxygen. Their concentration was measured under physiological conditions, after the nociceptive stimulation and after the application of melatonin, both in normal and stimulated animals.
View Article and Find Full Text PDFNeuro Endocrinol Lett
October 2003
Objectives: To study the balance between the pro-oxidative and antioxidative defence system after repeated painful stimulation in rats and the efficacy of the administration of different antioxidants (vitamins C, E, A, and selenium), analgesics (acetylsalicylic acid, morphine), and their combinations.
Methods: Mechanical clamping of both hind limbs was applied for 10 min for 5 consecutive days in adult male Wistar rats. The tail-flick latency was measured before and after a 5-day nociceptive stimulation with or without the substance application.
Int J Immunopathol Pharmacol
January 2000
We studied the effect of prolactin (PRL) inhibition by bromocriptine (BRC) in the first phase of adjuvant induced arthritis (AA), up to day 11(BRCl-AA), and in the whole time course of AA, up to day 23 (BRC-AA), on the development of the disease in male Lewis rats. On day 24, arthritic rats showed inhibition of PRL secretion, but not PRL mRNA expression in adenopituitaries. BRC treatment suppressed PRL serum levels and PRL mRNA expression in adenopituitaries.
View Article and Find Full Text PDFFree radicals and antioxidants may play a role in the etiology and pathogenesis of some central nervous diseases. The brain tissue is relatively insufficiently protected by antioxidants against the free radical induced damage. The brain situation may be reflected by the cerebrospinal fluid examination, which has not enough attention.
View Article and Find Full Text PDFMelatonin has been shown to play a role in antioxidative defence. We therefore studied its effect on oxidative damage to the rat cerebral cortex evoked by painful stimulation and immobilization-induced stress. Moreover, the effect of melatonin on chronic pain perception was examined.
View Article and Find Full Text PDFThe quality of stored blood can be deteriorated by hemolysis caused by free radicals. The purpose of this study was to elucidate whether neutrophile leukocytes are the source of free radicals in stored blood as in hemodialyzed patients. Resuspensions with low (LL) or high (HL) leukocyte concentrations were prepared from samples of twenty healthy volunteers.
View Article and Find Full Text PDFIncrease in knowledge about reactive oxygen species action mechanisms and oxidative stress effects in living organisms led to intensive seeking for new, more effective substances, which prevent extreme development of oxidative stress or are able to decrease its negative influence, damaging cell structures and many cell functions. These substances are called antioxidants, scavengers, trappers or quenchers. In nineties, melatonin became the centre of the interest in the filed of investigation of antioxidative properties of different chemical substances.
View Article and Find Full Text PDFFree radicals contribute significantly in modification of immune processes and inflammatory reactions. They are produced by activated phagocytes which use them for killing microorganisms. Free radicals facilitate production of cytokines, which are important as modifiers of inflammatory reactions.
View Article and Find Full Text PDFVitamin C (ascorbic acid) is an important hydrophilic compound with antioxidative effect. In the introduction the authors describe possible consequences of loss of vitamin C synthetic ability in an evolutionary ancestor of Anthropoidea. Metabolism of this vitamin is described briefly along with possibilities of its supplementation and determination in biological fluids.
View Article and Find Full Text PDFThe effect of stress anticipation was studied in two inbred Wistar rat strains with high and low sensitivity to isoprenaline. The animals were exposed to tail-flick and 4-hr water immersion restraint stress on two consecutive days. On the first day stress was applied to one group and the next day to the anticipation group.
View Article and Find Full Text PDFBy oxidation of nitrogen oxide nitrites and nitrates are formed which can be considered markers of inflammation. AGE-substances (products of advanced glycation) are formed not only from proteins (e.g.
View Article and Find Full Text PDFThe level od malondialdehyde (MDA), thiobarbituric acid reactive substances (TBARS) respectively, in blood is changing very quickly and therefore isoprostanes scam to be better markers of atherogenesis. Oxidized LDL belong to the most important reasons of the origin of foam cells and therefore of atherogenesis. That is why the inhibition of the oxidation of LDL particles should belong to the standard therapy of cardiovascular diseases.
View Article and Find Full Text PDFUltraviolet radiation causes increase of production of the reactive oxygen species in the human skin, which are responsible for oxidative stress and damage of many important cellular components in the target tissue. The complex of antioxidants represents the major protective system against the oxidative damage of the skin. Many antioxidants, namely vitamin E, can be successfully used in photoprotection.
View Article and Find Full Text PDFThe authors present the result of their work where they provide evidence that in inflammatory and degenerative diseases the break-down on superoxide in inadequate. This oxygen radicals and its metabolites play a significant role in the pathogenesis of these diseases. The authors revealed a severe defect in superoxide degeneration in particular in articular exudates of patients with active synovitis.
View Article and Find Full Text PDFThe authors examined indicators of the action of free radicals in 40 workers exposed to the risk of lead (work with lead containing glazing and prints). The lead concentration in the atmosphere did not exceed the highest permissible concentrations and the biological exposure tests as regards lead exposure did not exceed the highest permissible limits. In the examined subjects the authors found a significantly elevated level of superoxide dismutase activity (p < 0.
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