Lege Artis Medicinae

[Zoonoses in focus]

LAKOS András

FEBRUARY 22, 2007

Lege Artis Medicinae - 2007;17(02)

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Lege Artis Medicinae

[Those Sentenced to Death]

PINTÉR László

Lege Artis Medicinae

[DIFFUSE LARGE B-CELL NON-HODGKIN LYMPHOMA OF UNUSUAL LOCALISATION]

RESS Zsuzsa, ILLÉS Árpád, MATOLCSY András, TANYI Miklós, SZÖVÖRDI Éva, GERGELY Lajos

[INTRODUCTION - Diffuse large B-cell lymphoma frequently has bone involvement, but primary bone lymphoma is rare (around 4% of primary extranodal lymphomas). Long bones are most often affected, followed in frequency by the ribs, vertebrae, and pelvic bones. The main symptom is bone pain. CASE REPORT - The case of a young man is presented whose disease started with lumboischialgia. Since rheumatological treatment did not relieve the symptoms, MRI was performed, which showed a tumour with massive iliac bone destruction. Three months after the initial symptoms a surgical biopsy from the right ilium showed diffuse large B-cell lymphoma. Soon after acute renal insufficiency developed and the patient was put on haemodialysis. Based on the findings the disease was staged as Ann Arbor IV/B (bone and kidney), ECOG PS 3, International Prognostic Index 4. On the basis of the preliminary histological findings, reduced-dose CHOP chemotherapy was given, which resulted in a significant improvement of the renal function and haemodialysis could be abandoned. This was followed by 6 additional cycles of Rituximab-CHOP treatment and further 2 cycles of Rituximab-DHAP salvage chemotherapy with intrathecal prophylaxis, and, finally, since no response could be detected, R-IVAC treatment was given. After an initial response, the disease became progressive, and the patient died 9 months after the diagnosis was made from a disseminated chemoresistant disease. Autopsy confirmed extensive infiltration of the right iliac bone, kidneys, bone marrow, spleen, supraclavicular and abdominal lymph nodes, pancreas, scalp and brain. CONCLUSIONS - This case was chosen to be presented because of the unusual localisation of the diffuse large B-cell lymphoma, the initial diagnostic difficulty, and the very rapid progression despite the application of several aggressive chemotherapy schemes. A primary bone large B-cell lymphoma represents a diagnostic challenge with its rheumatological symptoms thus delaying diagnosis.]

Lege Artis Medicinae

[57th Annual Meeting of the American Association for the Study of Liver Diseases]

PÉTER Zoltán

Lege Artis Medicinae

[Is there a need for infectologists?]

SZALKA András

Lege Artis Medicinae

[EFFECT OF END-OF-LIFE EDUCATION ON MEDICAL STUDENTS’ AND HEALTH CARE WORKERS’ DEATH ATTITUDE]

HEGEDÛS Katalin, ZANA Ágnes, SZABÓ Gábor

[INTRODUCTION - The aim of our research was to evaluate the effect of courses for health care workers and medical students that deal with death, dying and bereavement and that of courses on hospice care of dying patients. The goal of the courses is to make communication on death more open by exploring critical issues related to fear of death to reduce inner anxiety and to improve attitude to dying patients. PARTICIPANTS AND METHOD - Participants (n=168) completed Neimeyer and Moore's Multi-dimensional Fear of Death Scale (MFODS) and Shortened Beck Depression Questionnaire (BDI) on the first and last day of the courses. In case of health care workers a follow-up survey was also performed 2 to 3 months after the course (n=32). RESULTS - The most significant factors of fear of death are: fear for significant others, fear of the dying process and fear of premature death. Overall fear of death scores are reduced as an effect of the courses, the alteration of the components of fear of death depends on the participants’ gender, age and profession as well. Improvement was observed in both groups in attitudes that can be related to the increase of knowledge on the quality care of dying patients like fear from the process of dying and fear from conscious experience of death. CONCLUSION - Besides education containing training as well it is important to strengthen the support function of workplaces in caring for the mental health of the health care staff. Furthermore it is important during gradual education that students participate in courses that aim to achieve opened communication in the most anxiety-evoking issues.]

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Neuroscience highlights: Main cell types underlying memory and spatial navigation

KRABOTH Zoltán, KÁLMÁN Bernadette

Interest in the hippocampal formation and its role in navigation and memory arose in the second part of the 20th century, at least in part due to the curious case of Henry G. Molaison, who underwent brain surgery for intractable epilepsy. The temporal association observed between the removal of his entorhinal cortex along with a significant part of hippocampus and the developing severe memory deficit inspired scientists to focus on these regions. The subsequent discovery of the so-called place cells in the hippocampus launched the description of many other functional cell types and neuronal networks throughout the Papez-circuit that has a key role in memory processes and spatial information coding (speed, head direction, border, grid, object-vector etc). Each of these cell types has its own unique characteristics, and together they form the so-called “Brain GPS”. The aim of this short survey is to highlight for practicing neurologists the types of cells and neuronal networks that represent the anatomical substrates and physiological correlates of pathological entities affecting the limbic system, especially in the temporal lobe. For that purpose, we survey early discoveries along with the most relevant neuroscience observations from the recent literature. By this brief survey, we highlight main cell types in the hippocampal formation, and describe their roles in spatial navigation and memory processes. In recent decades, an array of new and functionally unique neuron types has been recognized in the hippocampal formation, but likely more remain to be discovered. For a better understanding of the heterogeneous presentations of neurological disorders affecting this anatomical region, insights into the constantly evolving neuroscience behind may be helpful. The public health consequences of diseases that affect memory and spatial navigation are high, and grow as the population ages, prompting scientist to focus on further exploring this brain region.

Clinical Neuroscience

The methylation status of NKCC1 and KCC2 in the patients with refractory temporal lobe epilepsy

UNAL Yasemin, KARA Murat, GENC Fatma, OZTURK Aslan Dilek, GÖMCELI Bicer Yasemin, KAYNAR Taner, TOSUN Kursad, KUTLU Gülnihal

Purpose - Methylation is a key epigenetic modification of DNA and regarding its impact on epilepsy, it is argued that “DNA methylation may play an important role in seizure susceptibility and maintenance of the disorder”. DNA methylation status of KCC2 (SCL12A5) and NKCC1 (SCL12A2) associated with refractory temporal lobe epilepsy was investigated in our study. Materials and methods - Thirty-eight patients with temporal lobe epilepsy (TLE) who were diagnosed by video EEG monitoring and 32 healthy control subjects were included in the study. Twenty-three patients in TLE group were men and the remaining 15 were women. Among them, 27 had unilateral temporal focus (9 with right; 18 with left) and 11 patients had bilateral TLE. We analyzed promoter region methylation status of the KCC2 (SCL12A5) and NKCC1 (SCL12A2) genes in the case and control groups. Gene regions of interest were amplified through PCR and sequencing was accomplished with pyro-sequencing. Results - We found a significant relationship between TLE and methylation on the NKCC1. However, there was no association between TLE and methylation on the KCC2 gene. Also, we found no association between right or left and unilateral or bilateral foci of TLE. There was no relationship between TLE and methylation on the NKCC1and KCC2 genes in terms of mesial temporal sclerosis in cranial MRI, head trauma or febrile convulsions. Conclusion - The methylation of NKCC1 can be a mecha­nism of refractory temporal lobe epilepsy. There are limited findings about DNA methylation in TLE. Therefore, further studies with large sample sizes are necessary.

Clinical Neuroscience

[Family planning in multiple sclerosis: conception, pregnancy, breastfeeding]

RÓZSA Csilla

[Family planning is an exceptionally important question in multiple sclerosis, as women of childbearing age are the ones most often affected. Although it is proven that pregnancy does not worsen the long-term prognosis of relapsing-remitting multiple sclerosis, many patients are still doubtful about having children. This question is further complicated by the fact that patients – and often even doctors – are not sufficiently informed about how the ever-increasing number of available disease-modifying treatments affect pregnancies. Breastfeeding is an even less clear topic. Patients usually look to their neurologists first for answers concerning these matters. It falls to the neurologist to rationally evaluate the risks and benefits of contraception, pregnancy, assisted reproduction, childbirth, breastfeeding and disease modifying treatments, to inform patients about these, and then together come to a decision about the best possible therapeutic approach, taking the patients’ individual family plans into consideration. Here we present a review of relevant literature adhering to international guidelines on the topics of conception, pregnancy and breastfeeding, with a special focus on the applicability of approved disease modifying treatments during pregnancy and breastfeeding. The goal of this article is to provide clinicians involved in the care of MS patients with up-to-date information that they can utilize in their day-to-day clinical practice. ]

Clinical Neuroscience

[The propagation and semiology of focal epileptic seizures. case presentations to the insula. theoretical considerations]

BALOGH Attila, BALOGH Attila ifj.

[Study objectives – The developing of diagnostical examinations in epileptology provides new challenges in seizure semiology. On the analysis of seizures it is important to examine the mechanisms of their propagation. The brain connectivity (based on the neuroimaging), the shadowing of the movement of excessive neuronal activity (based on computerized EEG and MEG methods), the cognition of the physiological and pathological brain networks are the foot- stone of the epileptic seizure propagation. The investigators prove, by means of case demonstrations of the role of the network nodes and the role of the epileptic hubs in the seizure symptomatology. Methods – The preoperative, intra and postoperative data are analised of three insular and one parietal epileptic patients in point of view of their seizure symptomes. Complex neuroimaging, noninvasive and invasive electrophysiology, intensive long-term video-EEG monitoring, computerized EEG analysis, fuctional mapping, intraoperative corticography were used. The etiology were confirmed with hystology. Results – It is observed that on seizure semiology our patients plays the insula a double role. In some cases, it is the focus of insular seizures with their symptoms difficult to identify. However, in the majority of cases and as a consequence of its rich neural connections, the insula has a peculiar property in the evolution of the symptomatogenic features of seizures. This observations are developing new relationships between the mechanism of seizure propagation and its semiological consequences. Conclusions – On epileptological point of view there are brain structures which has peculiar role in the „designe” of propagation of the epileptic excitement. The numerous new methods in neuroimaging and neurophysiology allowed the connectomical examination of the epileptic networks. The role of the epileptic diathesis is approachable with the metholdology of the brain connectivity. Theoretically the node of the epileptic network consist of the potential pathes where the localised excessive excitement can propagete. The route where the actual seizure can go adhead is determined by the actual edpileptic propensity of the above mentioned potential pathes.]

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[Unusually located metastatic tumors of the spine]

BAZSÓ Péter, NAGY László

[Metastatic spine tumors are representing a growing number of oncological patients. In this paper the authors would like to focus on a rare type of metastatic spine tumors, the unusually located ones. Since the advent of MRI and with the progress in general oncology this formerly rare tumors became more frequently recognized. Consequently these tumors are causing a new challenge for the oncologists, neurologists and neurosurgeons as well. The aim of the authors with this paper was to raise, especially the neurologists' attention to this emerging problem.]