Lege Artis Medicinae

[About books]

UHERECZKY Gábor

DECEMBER 25, 1991

Lege Artis Medicinae - 1991;1(18)

["Cystic fibrosis" dr. Kálmán Gyurkovits Book review]

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Lege Artis Medicinae

[Metoprolol treatment in dialated cardiomyopathy]

DÉKÁNY Miklós, NYOLCAS Noémi, FIÓK János, VÁNDOR László, SEREG Mátyás, BALOGH Ildikó

[Authors applied metoprolol for treating heart failure in with dilated cardiomyopathy. Patients were given digitalis, diuretics as well as ACE-inhibitor and vasodilator drugs. The grade of heart failure was according to NYHA classification in the mean 2.5 class. For assessing the effect of metoprolol clinical variables and results of non-invasive tests were evaluated and compared in 3 consecutive periods: 1) before starting metoprolol, 2) 2–4 weeks after reaching its definitive dose (short-term effect), 3) 3-6 months later (medium-term effect). Early intolerance appeared in 3 patients; signi ficant progression of heart failure in 2 and hypotension causing complaints in 1. Evaluating the actually treated 17 patients clinical signs of heart failure (NYHA class) decreased, left ventricular ejection fraction improved, though not significantly in case of every considered variables, left atrial filling pressure decreased, exercise capacity did not alter, rate-pressure product decreased at rest and at low level of exercise as well. The authors stress the significance of "up-regulation" of myocardial beta-1 receptors in the reduction of myocardial toxic catecholamin effect and myocardial oxygen demand as well as in the increase of myocardial blood supply. Referring to the data of the respective literature and to their own experiences the authors suggest metoprolol treatment in cases of dilated cardiomyopathy, where previus therapy did not prove to be efficient.]

Lege Artis Medicinae

[Role of oxygen derived free radicals during myocardial reperfusion]

KÓNYA László , FEHÉR János, JUHÁSZ Nagy Sándor

[Oxygen derived free radicals are now considered to be important contributors to tissue (myocardium) injury associated with ischemia and reperfusion. Normaly the tissue concentration of these toxic intermediate products of oxygen is strietly limited, but production of oxygen free radicals overwhelming the capacity of the tissue elimination may cause serious damage. Thus reperfusion has it's own danger with the extension of the injury produced by the ischemia alone. Several experi mental studies have shown that different free radical scavengers can reduce the post-ischemic tissue injury, however, there are contradictory results and unresolved problems. Further investigation is necessary to establish the relevance of oxygen free radical mediated myocardial injury and the effective antioxidant treatment. ]

Lege Artis Medicinae

[Cure]

MATOS Lajos

[Belfast Metoprolol Study; Helsinki Heart Study]

Lege Artis Medicinae

[Autoimmunity and the network of the antibody-forming cells: the "immunological homunculus"]

UHER Ferenc

[Frank M. Burnet's clonal selection theory declares the deletion and/or anergy of self-reactive clones to be the fundamental mechanism responsible for self tolerance. There is ample evidence, however, that all healthy individuals have lymphocytes and , natural” antibodies that recognize self structures. In the 1970s, Niels K. Jerne postulated the network theory. It is based on the idea that the idiotype, the region of an immunoglobulin that is unique because it comprises the antigen-binding portion of the molecule, can act as both antigen and antibody within the same individual. Network theory views the immune system as a single, highly interconnected system, through idiotypes, a web of V domains. Antonio Coutinho adressed this problem and divided the repertoire of the B lymphocytes into two parts. He suggested that a set of naturally activated cells and the immunoglobulins they secrete, is reflected in the autonomous immune activities of the self-related network as the central immune system. In contrast, immune responses to external antigens are essentially allonomous clonal activities of another set of resting, rapidly turning over lymphocytes that follow the predictions of the clonal selection theory, making up the peripheral part of the system. Finally, Irun R. Cohen suggested that some, perhaps all, major autoantigens are indeed dominant because each one of them is encoded in the organizational structure of the immune system. This picture was termed the immunological homunculus by its analogy to the picture of the body encoded in the central nervous system. ]

Lege Artis Medicinae

[Modern therapy of intracerebral and subarachnoidal hemorrhages]

LEEL-ŐSSZY Lóránt

[The frequency of the intracerebral hemorrhages among the strokes is most commonly quoted around 10 percent. The rupture of an intracranial aneurysm is often complicated with subarachnoideal hemorrhage as well as with intracerebral hematoma therefore this latter type of intraparenchymal hemorrhage may also be discussed in this topic. The modern imaging procedures (Computed to mography, Nuclear magnetic resonance) are of crucial importance in the urgent and exact diagnosis of intracranial hemorrhages. The first essential step in the diagnosis of stroke is to distinguish the ischemic lesion from the hemorrhage by means of CT. When an intra cerebral hemorrhage threatens life and the patient's condition is relatively good there must be an urgent decision considering the choice between medical therapy or surgical intervention. Although clearcut indications for surgery are now available, the clinical and computed tomographic guidelines play indi vidually an important role in the final decision. The individual judgment is always desirable in every case of intracerebral hemorrhage as well as in the surgical intrvention of intracranial aneurysm during the acute phase (two days).]

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[In memoriam Prof. Dr. Ferenc Garzuly (1937-2021)]

ILLÉS Zsolt, HAHN Katalin, KÁLMÁN Bernadette

[Ferenc Garzuly passed away after a long and productive life at the age of 84. He worked for almost 60 years at the Markusovszky University Teaching Hospital, where primarily led the laboratory of neuropathology and the department of neurology, but transferred to the department of pathology after his retirement. By authoring several books on rare diseases, he greatly enriched the case-based tea­ching approach in medicine. He described the Hun­garian type of transthyretin mutation causing the familial me­nin­go­cerebrovascular amyloidosis phenotype. The presentation of a special phenotype of Fabry disease associated with megadolichobasilar anomaly and a novel mutation in the alpha-galactosidase-A gene is also associated with his name. ]

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[CONTROVERSIAL EFFECTS OF NITRIC OXIDE: INTEGRITY AND TOXICITY]

KISS Róbert Gábor, BÉRES Bernát János

[Nitric oxide is a key molecule of the human body. Since its discovery, a library of books and papers have been published on its physiological and pathophysiological role. It is involved in almost all pathological processes. In healthy individuals nitric oxide plays a crucial role in the vascular regulation by protecting against atherosclerosis, myocardial infarction and stroke. In the central nervous system, nitric oxide in its function as a neurotransmitter is responsible for synaptic plasticity, long-term potentiation, memory and a number of neuroendocrine control mechanisms. Furthermore, during inflammation and host defense, macrophages and neutrophils produce nitric oxide that has antibacterial, antiviral, and tumour cell killing activity. In pathologic conditions, however, nitric oxide reacts with superoxide anion to form peroxynitrite that damages the enzymes of the mitochondrial respiratory chain, superoxide-dismutase, reduced glutathion and activates or inactivates signalling molecules. During ischaemia- reperfusion, nitric oxide and peroxynitrite contribute to nitrative/nitrosative stress, DNAfragmentation and consequent polyADP-ribosepolymerase- 1 enzyme activation both in coronary thrombosis and ischaemic stroke.]

Lege Artis Medicinae

[About Books]

FEJÉREGYHÁZI István

[A review of the book written by: László Tringer: "The Healing Conversation"]

Lege Artis Medicinae

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GRYNAEUS Tamás

[Herbalism - the basics of phytotherapy - Gábor Rácz, Erzsébet Rácz-Kotilla, László Gy.]

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[A review of the book written by Dr. Gaál Csaba : "Surgery"]