Lege Artis Medicinae

[The physiological and pathophysiological role of selenium]

TARKOVÁCS Gábor1

OCTOBER 28, 1992

Lege Artis Medicinae - 1992;2(10)

[ Recent research and clinical observations have made the topic of the relationship between trace elements and free radical reactions, the unavoidable corollary of aerobic life, come to the fore. Based on the data of more recent literature, the author attempts to provide a concise review of the biological function of selenium, one of the trace elements, and emphasizes some aspects of its clinical importance. Selenium, being an essential component of selenium dependent glutathi one peroxidase plays a central protective role in the antioxidative processes of the cells and any damage to this function may entail several pathological consequences. Results of animal experiments and observations on human subjects refer to the role of selenium deficiency in the development and outcome of a certain type of cardiomyopathy but its relationship to atherosclerotic cardiovasular disease, im munological disturbances, inflammatory disorders and anticarcinogenesis remains to be fully elucidated. Selenium should be taken into account when treating patients confined to chronic total parenteral nutrition and its possible antineoplastic effect might be benefical in certain conditions. Although the clinical application of selenium in well-establis hed deficiency states is justified, and as a prophylactic measure or even as part of an antitumour strategy appears to be promising, wanton administration of this important trace element can be hazardous.]

AFFILIATIONS

  1. Semmelweis Orvostudományi Egyetem, III. Belklinika Budapest

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Further articles in this publication

Lege Artis Medicinae

[Diagnosis and treatment of acute obstetrical DIC]

RÁKÓCZI István

[Modern management of acut obstetrical diffuse intravascular coagulation (DIC) was evaluated. A large variety of obstetrical conditions are associated with acute DIC such as amniotic fluid embolism, abruptio placentae, intrauterine infection (septic abortion), dead fetus syndrome and prolonged shock of any aetiology. Typically, acute obstetrical DIC is associated with haemorrhage (mainly vaginal bleeding) and shock. The whole blood coagulation time, platelet count and fibrinogen level are the most clinically useful indicators in evaluating the patient with acute DIC. Management of acute DIC includes prompt treatment of precipitating factors (delivery of fetus in placental abruption, evacuation of the uterus in septic abort union plus administration of antibiotics, delivery of a dead fetus by induction of labor). Careful attention to fluid and blood cell replacement is needed to prevent and treat hemorrhagic shock. The coagulation failure is treated with fresh-frozen plazma or cryoprecipitate and platelets. In acute obstetrical DIC complicated by hemorrhage heparin has no use and will only cause the bleeding to worsen. Recently several clinical studies indicate that antithrombin III concentrates are efficacious in DIC.]

Lege Artis Medicinae

[Disseminated intravascular coagulation in the newborn]

GOLDSCHMIDT Béla

[A review is given on disseminated intravascular coagulation in the newborn period. DIC is not a single disease entity, but a complication of several underlying diseases. The author summarizes the physiologic and pathophysiologic conditions which promote the development of this blood coagulation disorder in this age. Further on the clinical symptoms, the difficulties of laboratory analysis as well as of differential diagnosis are discussed. Finally a detailed description of the treatment of the neonatal DIC syndrome is given. ]

Lege Artis Medicinae

[The risk of ischemic heart disease in patients with ischemic cerebrovascular disease]

HORVÁTH Sándor

[A strong association is supported between ichemic cerebrovascular and heart diseases by several studies. Death is more commonly caused by myocardial infarction than by stroke itself in patients with asymptomatic carotid stenosis, amaurosis fugax, transient ischemic attack or ischemic stroke. Signs and symptoms of ischemic cerebrovascular diseases or asymptomatic atherosclerosis of the arteries of the neck are harbinger for both myocardial and cerebrovascular infarction. Patients suffering from ischemic cerebrovascular diseases should be routinely investigated, treated and cared for coronary artery disease in order to prolong survival. ]

Lege Artis Medicinae

[Results and perspective of gene therapy in the treatment of primary immunodeficiency]

SÓFI Gyula, MARÓDI László

[During the last decade research has been directed toward gene-replacement therapy of genetic disorders, including primary immunodeficiencies. Efficient methods for gene transfer were developed to correct the gene defect in adenosine desaminase deficiency, leukocyte adhesion deficiency and chronic granulomatous disease. Somatic gene therapy in a patient with ADA deficiency was performed two years ago. This paper summaries inicial clinical applications of gene transfer and gene therapy in primary immunodeficiency and the future prospects of gene therapy in cohort of patients. ]

Lege Artis Medicinae

[Third International Study of Infarct Survival]

MATOS Lajos

[There was no significant difference in 35-day mortality between the aspirin + heparin and aspirin-only groups. The incidence of re-infarction was slightly lower with aspirin plus heparin (2p <0.09). When patients also received heparin in addition to aspirin, transfusion was needed more often and non-cerebral haemorrhage was more frequent (2p < 0.01) Combining the results of ISIS-3 and GISSI-2, mortality was significantly reduced during the treatment period (p < 0.01). There was no appreciable difference in mortality or re-infarct incidence between the use of streptokinase or APSAC, but there were more allergic events in the APSAC group. There was no difference in 6-month survival between the two groups. There was no difference in the efficacy of streptokinase and tPA treatment at either 0-35 days or 6 months survival. Allergies were less frequent with tPA, but non-cerebral haemorrhage was more frequent. Treatment with tPA led to stroke significantly more often than streptokinase (2p < 0.01). Combining the data from the similar GISSI-2 trial and ISIS-3, no difference was observed between streptokinase and tPA in either mortality between 0-35 days or survival at 6 months. ]

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Objectives – Stroke is the third leading cause of death in the European region. In spite of a decreasing trend, stroke related mortality remains higher in Hungary and Romania when compared to the EU average. This might be due to higher incidence, increased severity or even less effective care. Methods – In this study we used two large, hospital based databases from Targu Mures (Romania) and Debrecen (Hungary) to compare not only the demographic characteristics of stroke patients from these countries but also the risk factors, as well as stroke severity and short term outcome. Results – The gender related distribution of patients was similar to those found in the European Survey, whereas the mean age of patients at stroke onset was similar in the two countries but lower by four years. Although the length of hospital stay was significantly different in the two countries it was still much shorter (about half) than in most reports from western European countries. The overall fatality rate in both databases, regardless of gender was comparable to averages from Europe and other countries. In both countries we found a high number of risk factors, frequently overlapping. The prevalence of risk factors (hypertension, smoking, hyperlipidaemia) was higher than those reported in other countries, which can explain the high ratio of recurring stroke. Discussion – In summary, the comparatively analyzed data from the two large databases showed several similarities, especially regarding the high number of modifiable risk factors, and as such further effort is needed regarding primary prevention.

Clinical Neuroscience

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Background - The aim of this study was to compare ischemic stroke subtypes with the effects of risk factors, the relationship between grades of kidney disease and the severity of stroke subtypes. Methods - The current study was designed retrospectively and performed with data of patients who were hospitalised due to ischemic stroke. We included 198 subjects who were diagnosed with ischemic stroke of Grade 3 and above with chronic kidney disease. Results - In our study were reported advanced age, coronary artery disease, moderate kidney disease as the most frequent risk factors for cardioembolic etiology. Hypertension, hyperlipidemia, smoking and alcohol consumption were the most frequent risk factors for large-artery disease. Female sex and anaemia were the most frequent risk factors for small-vessel disease. Dialysis and severe kidney disease were the most frequent risk factors in unknown etiologies, while male sex, diabetes mellitus, prior stroke and mild kidney disease were the most frequent risk factors for other etiologies. National Institute of Health Stroke Scale (NIHSS) scores were lower for small-vessel disease compared with other etiologies. This relation was statistically significant (p=0.002). Conclusion - In order to improve the prognosis in ischemic stroke with chronic kidney disease, the risk factors have to be recognised and the treatment options must be modified according to those risk factors.

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[High prevalence of burnout and depression may increase the incidence of comorbidities among Hungarian nurses]

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[Background and purpose - Poor mental health among health care professionals may have a significant impact on public health. There is limited information about the prevalence and potential consequences of burnout and depression among nurses in Hungary. The objective of this study is to explore the relationship between burnout as well as depression and somatic symptoms as well as comorbidities among nurses in Hungary. Methods - Cross-sectional study with self-administered questionnaires among 1,713 nurses. Burnout and depression were assessed by the Maslach Burnout Inventory (MBIHSS) and the Shortened Beck Depression Questionnaire, respectively. Somatisation was measured by the Patient Health Questionnaire (PHQ-15). Correlates of burnout and depression were assessed by logistic and linear regression analyses. Results - The prevalence of depressive symptom and clinical depression was 35% and 13%, respectively. The prevalence of moderate and high level emotional exhaustion, depersonalisation, and decreased personal accomplishment was 44%, 36% and 74%, respectively. We identified burnout and depression as a predictor of high prevalence of subjective somatisation. Whilst burnout showed a strong association with increased prevalence of hypertension, depression predicted almost all examined diseases, in particular, cardiac and cerebrovascular diseases, as well as neoplasms. Conclusion - We found high prevalence of burnout and depression among nurses in Hungary. As depression has been shown to be associated with higher prevalence of comorbidities than burnout, its consequences may be more significant. Appropriate prevention, diagnosis, and adequate treatment of burnout and depression may decrease the prevalence of ensuing comorbidities.]

Lege Artis Medicinae

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[On 31 August 2021, the European Society of Cardiology published its guideline “Prevention of cardiovascular disease in clinical practice”. This guideline provides a comprehensive review about risk factors of atherosclerotic cardiovascular disease, their assessment, potential modifiers, treatment and prevention of the cardiovascular disease itself at societal and individual levels respectively. The previous guideline issued 2016, had to be updated due to the recent significant advances in risk prediction of cardiovascular disease on atherosclerotic background and due to the beneficial effects of treatment, emerging new drugs and therapeutic targets. The risk assessment system has undergone a major overhaul and now predicts the risk of fatal and non-fatal cardiovascular events together over a 10-year horizon and over a lifetime. In the new guideline, age plays a more important role in risk classification than before. The risk assessment and staged management of apparently healthy people or patients with established atherosclerotic cardiovascular disease, diabetes mellitus and other specific diseases or conditions are detailed. The positive impact of influencing risk factors, the years of life gained can recently be presented in a lifetime perspective, which will help to make an individually tailored decision on the extent of interventions, taking into account also the patient'’s preferences.]

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The evaluation of the relationship between risk factors and prognosis in intracerebral hemorrhage patients

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