Clinical Neuroscience

[Abstracts of the 2nd Pannonian Symposium on CNS Injury]

JUNE 20, 2003

Clinical Neuroscience - 2003;56(05-06)

[Abstracts of the 2nd Pannonian Symposium on CNS Injury 2003;56(05-06)]

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Clinical Neuroscience

[Combined anterior and posterior approach to the tumours of the cervicothoracic junction: our experience]

BANCZEROWSKI Péter, LIPÓTH László, VERES Róbert

[Introduction - In the past, surgery of the pathologies of cervicothoracic junction carried high risk. Better knowledge of the anatomical situation and the increasing experience with anterior approach, corpectomy and spinal stabilization instruments have all made possible to remove the tumours of the cervicothoracic junction in a combined way. Case reports - The authors present six cases of spinal tumours where removal was done via anterior approach with partial clavicle and sternal resection. In two cases the anterior approach were combined with posterior tumour removal and fixation. Two of the cases were metastatic tumours, one lymphoma, one osteochondroma, one giant cell osteoid tumour and one malignant neurogenic tumour. The ventral approach gave a relatively wide window to explore the tumours and with the help of the operative microscope the tumour removal went fairly well. After total removal of the tumours the cervical spine were stabilized with own clavicle or iliac bone graft, titanium plate and screws. In patients with three-column involvement posterior fixation was made. The immediate recovery of the patients was well and there were no postoperative complications. Postoperative CT and MRI scans have great value in the early control after surgery as well as for the follow up of the patients. Conclusion - The anterior approach with partial clavicle and sternal resection combined with posterior approach and fixation seems to be feasible and safe method to explore and remove cervicothoracic junction pathologies.]

Clinical Neuroscience

[Asymptomatic ischemic cerebrovascular disorders and neuroprotection with vinpocetine]

HADJIEV Dimiter

[The asymptomatic ischemic cerebrovascular disorders (AICVD) is an early manifestation of cerebrovascular disease. It is also known as latent insufficiency of the cerebrovascular circulation or as asymptomatic cerebrovascular disorders. Recently, the term subclinical disease, detected noninvasively, has been introduced by American Heart Association. The diagnosis is based on the following criteria: evidence of vascular risk factors; episodic nonspecific complaints without any focal cerebral symptoms; mild cognitive deficit, detected by neuropsychological tests; carotid ultrasonography often shows intimal-medial thickening, atherosclerotic plaques and carotid stenosis; CT and MRI occasionally reveal silent cerebral infarctions, white matter hyperintensities or cerebral atrophy; regional hypoperfusion above the ischemic threshold is also seen by rCBF measurements. Treatment of the AICVD, modifying the vascular risk factors and using neuroprotective agents, should be the cornerstone of primary prevention of ischemic stroke and cognitive decline, caused by cerebrovascular disorders. Vinpocetine has been found to interfere with various stages of the ischemic cascade: ATP depletion, activation of voltagesensitive Na+- and Ca++-channels, glutamate and free radicals release. The inhibition of the voltage-sensitive Na+- channels appears to be especially relevant to the neuroprotective effect of vinpocetine. Pronounced antioxidant activity of the drug could also contribute to the neuroprotection. PET studies in primates and man showed that 11C labelled vinpocetine passes the blood-brain barrier rapidly. Heterogeneous brain distribution of the compound was observed mainly in the thalamus, basal ganglia, occipital, parietal and temporal cortex, regions which are closely related to the cognitive functions. PET studies in chronic ischemic stroke patients revealed favourable effects of vinpocetine on rCBF and glucose metabolism in the thalamus, basal ganglia and primary visual cortex. It seems, vinpocetine, affecting the multiple mechanisms of the AICVD, could be of benefit for the treatment in this early stage of cerebrovascular disease. Vinpocetine may also become a new therapeutic approach to prophylactic neuroprotection in patients at high risk of ischemic stroke.]

Clinical Neuroscience

[CONGRESS CALENDAR]

[Congress calendar 2003;56(05-06)]

Clinical Neuroscience

[Society of Környey’s Fellows]

CZOPF József

Clinical Neuroscience

[Is there any importance of the Leiden mutation in the pathogenesis of ischaemic stroke?]

PONGRÁCZ Endre, TORDAI Attila, CSORNAI Márta, BÉLA Zsuzsanna, NAGY Zoltán

[Background - There are conflicting data about the role of Leiden mutation in the pathogenesis of cerebral arterial thrombosis. In order to obtain relevant data, authors investigated the prevalency of factor V Leiden (A506G) both in healthy subjects and in a subgroup of ischaemic stroke patients. Matherial and methods - Blood samples of 171 healthy persons and 254 ischaemic stroke patients were examined by PCR method for Leiden mutation. Ischaemic lesions in the stroke group were documented by CT or MRI. A routin questionnaire was used to study the family history of vascular events (hypertension, diabetes, POAD, stroke, myocardial infarction) of patients. Conventional vascular risk factors of patients were also documented. Results - The prevalence of Leiden mutation was 7.2% in healthy persons and 11.9% in stroke patients. The OR for 254 patient was 1,45 (0.71-2.97). In the subgroup of young patients: age <50 (n=134) the OR was 1.67 (0.75-3.70) and in the elderly patients group: age >50 (n=120) the OR was 1.21 (0.50-2.89). In the family history of stroke patients having Leiden mutation (hetero- and homozigosity) the stroke prevalence was higher (p=0.01). In the ischaemic stroke group, age<50 with polymorphism a tight correlation with hyperlipidaemia (p=0.03) was found. In the group of age<50 with heterozigosity for Leiden, a lower plasma fibrinogen concentration (p=0.02) was found. The polymorphism showed no correlation with the hypertension, hyperuricaemia, migraine, diabetes mellitus, smoking, alcohol consumption and CDS status of patients. Conclusion - When comparing stroke patients to control population there is no significant increase in the frequency of Leiden mutation. Leiden mutation together with hyperlipidaemia and stroke in the family history results in high risk for ischaemic stroke in young patients.]

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Clinical Neuroscience

[Rehabilitation possibilities and results after neurosurgical intervention of brain tumors ]

DÉNES Zoltán, TARJÁNYI Szilvia, NAGY Helga

[Objectives - Authors examined the rehabilitation possi­bi­lities, necessities, and results of patients after operation with brain tumor, and report their experiences. Method - Retrospective, descriptive study at the Brain Injury Rehabilitation Unit, in National Institute for Medical Rehabilitation. Patients - Patients were admitted consecutively after rehabilitation consultation, from different hospitals, following surgical intervention of brain tumors, between 01 January 2001 and 31 December 2016. Patients participated in a postacute inpatient rehabilitation program, in multidisciplinary team-work, leaded by Physical and Rehabilitation Medicine specialist included the following activities: rehabilitation nursing, physical, occupational, speech, psychological and neuropsychological therapy. Results - At the rehabilitation unit, in the sixteen-year period 84 patients were treated after operation with brain tumor. Patients arrived at the unit after an average of 41 days to the time of the surgical intervention (range: 10-139 days), and the mean length of rehabilitation stay was 49 days (range: 2-193 days). The mean age of patients was 58 years (20-91), who were 34 men and 50 women. The main symptoms were hemiparesis (64), cognitive problems (26), dysphagia (23), aphasia (16), ataxia (15), tetraparesis (5), and paraparesis (1). The mean Barthel Index at the time of admission was 35 points, whereas this value was 75 points at discharge. After the inpatient rehabilitation, 73 patients improved functionally, the status of 9 patients did not show clinically relevant changes, and 2 patients deteriorated. During the rehabilitation 10 patients required urgent interhospital transfer to brain surgery units, 9 patients continued their oncological treatment, two patients continued rehabilitation treatment at another rehabilitation unit, and after rehabilitation 73 patients were discharged to their homes. Conclusions - Inpatient rehabilitation treatment could be necessary after operation of patients with brain tumor especially when functional disorders (disability) are present. Consultation is obligatory among the neurosurgeon, rehabilitation physician and the patient to set realistic rehabilitation goals and determine place and method of rehabilitation treatment, but even at malignancies cooperation with oncological specialist also needed. Authors’ experience shows benefits of multidisciplinary rehabilitation for patients after brain tumor surgery. ]

Clinical Neuroscience

[Mentalizing deficit among patients with traumatic brain injury ]

TAMÁS Viktória, BÜKI András, HEROLD Róbert

[Mentalization or theory of mind as an aspect of our social cognition, is our ability to infer mental states of others (intentions, desires, thoughts, emotions) and to predict their behavior accordingly. This function significantly affects our participation and orientation in the social world and plays an important role in conversational situations, social interactions, social integ­ration and adaptation. The brain regions that serve as the basis for mind-reading function can be damaged as a consequence of traumatic brain injury, which frequently occurs among the younger population. Traumatic brain injury can cause focal or diffuse cerebral injuries, often leading to theory of mind deficit. In this topic such publications were researched that compared theory of mind ability between traumatic brain injury patients and control subjects (comparative case-control studies). We searched for the studies in the following internet based/online databases: PubMed, Web of Science, ScienceDirect, Google Scholar, APA PsycNET (PsycARTICLES) and EBSCO Host. The search was performed using the following key word combinations: theory of mind or mentalizing or social cognition AND traumatic brain injury or head/brain injury or diffuse axonal injury. Based on the results of the included and processed studies (21 pc), traumatic brain injury often leads to mentalization deficit with different severity. With this present review we aim to draw attention to the fact that the appearance and severity of mind reading dysfunction can considerably affect the outcome of the disease, the length of rehabilitation time and the prognosis of traumatic brain injury patients. Besides this, with this review, we aim to take sides in whether theory of mind ability is domain-specific or domian-general based on studies including traumatic brain injury patients.]

Clinical Neuroscience

Cyanocobalamin and cholecalciferol synergistically improve functional and histopathological nerve healing in experimental rat model

ALBAY Cem, ADANIR Oktay, AKKALP Kahraman Asli, DOGAN Burcu Vasfiye, GULAEC Akif Mehmet, BEYTEMUR Ozan

Introduction - Peripheral nerve injury (PNI) is a frequent problem among young adults. Hopefully, regeneration can occur in PNI unlike central nervous system. If nerve cut is complete, gold standard treatment is surgery, but incomplete cuts have been tried to be treated by medicines. The aim of the study was to evaluate and compare clinical and histopathological outcomes of independent treatment of each of Vitamin B12 (B12) and Vitamin D3 (D3) and their combination on sciatic nerve injury in an experimental rat model. Materials and methods - Experimental animal study was performed after the approval of BEH Ethics Committee No. 2015/10. 32 rats were grouped into four (n=8) according to treatment procedures, such as Group 1 (controls with no treatment), Group 2 (intraperitoneal 1 mg/kg/day B12), Group 3 (oral 3500 IU/kg/week D3), Group 4 (intraperitoneal 1 mg/kg/day B12+ oral 3500 IU/kg/week D3). Sciatic Functional Index (SFI) and histopathological analysis were performed. Results - SFIs of Group 2, 3, 4 were statistically significantly higher than controls. Group 2 and 3 were statistically not different, however Group 4 was statistically significantly higher than others according to SFI. Axonal degeneration (AD) in all treatment groups were statistically significantly lower than in Group 1. AD in Group 4 was significantly lower than in Group 2 and 3; there was no significant difference between Group 2 and 3. There was no significant difference between Group 1,2 and 3 in Axonolysis (A). But A of Group 4 was significantly very much lower than all others. Oedema- inflammation (OE-I) in all treatment groups were significantly lower than in Group 1; there was no significant difference between Group 2 and group 4. OE-I in Group 2 and 4 were significantly lower than in Group 3. There were no significant differences between Group 1, 2 and 3 in damage level scores; score of Group 4 was significantly lower than of Group 1. Conclusions - B12 and D3 were found effective with no statistically significant difference. But combined use of B12 and D3 improve nerve healing synergistically. We recommend combined use of B12 and D3 after PNI as soon as possible.

Clinical Neuroscience

[Neuropsychological rehabilitation following acquired brain injury]

TAMÁS Viktória, KOVÁCS Noémi, TASNÁDI Emese

[Neuropsychological rehabilitation or rehabilitation neuropsychology is a field within applied neuropsychology. It originally diverges from applied clinical and functional neuropsychology, although it could not be entirely differed from them. The unique nature of this area over the complexity is given by its process-controlled and system-approach aspects. In Hungary the number of neurorehabilitation centres and departments requiring neurocognitive rehabilitation has been continually increasing. Nevertheless, the number is still low; accordingly in our country this field is relatively young and isn’t well known. Authors of this review would like to draw attention to the importance of rehabilitation of patients with acquired brain injury and improvement of their quality of life with the theoretical and practical knowledge, as well as the necessity of future alterations and challenges emphasizing the need of a significant change of this narrow domain. ]

Clinical Neuroscience

[Guidelines for the treatment of traumatic brain injury - 2017]

BÜKI András, BARZÓ Pál, DEMETER Béla, KANIZSAI Péter, EZER Erzsébet, TÓTH Péter, HORVÁTH Péter, VARGA Csaba

[Traumatic brain injury (TBI) is recognized to be the main cause of death and disability in the first four decades representing a major socio-economical problem worldwide. Recent communications revealed a particularly worrying image about the quality of care for TBI in Hungary. For any improvement a systematic approach characterized by utilization of scientific evidence based guidelines forming the basis for close monitoring of the actual care are considered a prerequisite. In Hungary the first evidence based guidelines in the field of TBI have been issued by the National Society for Anesthesiology and Intensive Care more than two decades ago followed by joint guidelines of the Hungarian Neurosurgical Society and the Hungarian College of Neurosurgeons. These publications were primarily based on the work of the European Brain Injury Consortium as well as guidelines issued by the Brain Trauma Foundation. Recent renewal of the latter and a need to refresh the outdated national guidelines was met by a call from regulatory authorities to issue the updated version of the Hungarian TBI-guidelines. The present review is aimed to briefly summarize the most fundamental elements of the national head injury guidelines that would hopefully be officially issued in a far more detailed format soon.]