Hungarian Immunology


SZABÓ Zoltán

MARCH 20, 2002

Hungarian Immunology - 2002;1(01)



Further articles in this publication

Hungarian Immunology

[In memoriam professor Gyula Petrányi]


Hungarian Immunology

[Neonatal activation of interferon-γ in macrophages]

ERDŐS Melinda, MARÓDI László

[Each individual passes through developmental or transient immunodeficiency due to the immaturity of the immune system in early childhood, expecially in the neonatal period. Therefore, neonates contract infections by intracellular and extracellular microorganisms more easily than older children and adults, and develop more severe disease with a high mortality rate. A number of abnormalities in the neonate’s host defense systems have been described suggesting that the immune system at birth functionally differs from that in adults. Neonatal T and B cells show decreased reactivity to antigens and mitogens and have deficienct IgM-IgG isotype switching. Newborns have decreased functional capacities of the hemolytic complement system. Under the same in vitro and in vivo conditions neonatal granulocytes show functional deficiency earlier than adult cells. Effector mechanisms of the cell-mediated immunity involve activation of macrophages by T helper1 cytokines, particularly interferon- γ (IFN-γ). IFN-γ is the most important macrophage-activating cytokine in vivo. Neonatal T cells express lower levels of IFN-γ and macrophages are hyporesponsive to activation by this cytokine. This deficiency may be explained by decreased phosphorilation of STAT1 despite comparable expression of STAT1 protein in neonatal and adult macrophages.]

Hungarian Immunology

[Anti-inflammatory effects of high-dose intravenous immunoglobulin therapy in immunothrombocytopenic purpura]

ERDŐS Melinda, MARÓDI László

Hungarian Immunology

[2nd C1-esterase inhibitor deficiency workshop, April 2001, Budapest]

FARKAS Henriette, VARGA Lilian, HARMAT György, FÜST György

Hungarian Immunology

[Patomechanism of hereditary angioneurotic oedema and provoking factors of oedematous attacks]

FARKAS Henriette

[The author describes the genetic background of hereditary angioneurotic edema, an autosomal dominant disorder. The pathomechanism of edemaformation and the significance of major mediator substances are explained along with clinical manifestations and their management. A special emphasis is placed on prophylaxis, the mainstay of which is the elimination of precipitating factors. The latter include mechanical trauma, diagnostic and therapeutic interventions performed in the cephalic-cervical region, mental stress, and sex hormones. The effect of endocrine therapies, ACE inhibitors, and infections - Helicobacter pylori in particular - on the natural course of the disease is also discussed.]

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We review the literature on REM parasomnias, and their the underlying mechanisms. Several REM parasomnias are consistent with sleep dissociations, where certain elements of the REM sleep pattern emerge in an inadequate time (sleep paralysis, hypnagogic hallucinations and cataplexy) or are absent/partial in their normal REM sleep time (REM sleep without atonia, underlying REM sleep behavior disorder). The rest of REM parasomnias (sleep related painful erection, catathrenia) may have other still unclear mechanisms. REM parasomnias deserve attention, because in addition to disturbing sleep and causing injuries, they may shed light on REM sleep functions as well as the heterogeneous etiologies of parasomnias. One of them, REM sleep behavior disorder has special importance as a warning sign of evolving neurodegenerative conditions mainly synucleinopathies (some cases synucleinopathies themselves) and it is a model parasomnia revealing that parasomnias may have by autoimmune, iatrogenic and even psychosomatic etiologies.

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Neuroscience highlights: The mirror inside our brain

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Over the second half of the 19th century, numerous theories arose concerning mechanisms involved in understanding of action, imitative learning, language development and theory of mind. These explorations gained new momentum with the discovery of the so called “mirror neurons”. Rizzolatti’s work inspired large groups of scientists seeking explanation in a new and hitherto unexplored area of how we perceive and understand the actions and intentions of others, how we learn through imitation to help our own survival, and what mechanisms have helped us to develop a unique human trait, language. Numerous studies have addressed these questions over the years, gathering information about mirror neurons themselves, their subtypes, the different brain areas involved in the mirror neuron system, their role in the above mentioned mechanisms, and the varying consequences of their dysfunction in human life. In this short review, we summarize the most important theories and discoveries that argue for the existence of the mirror neuron system, and its essential function in normal human life or some pathological conditions.