Comparison of the perioperative time courses of matrix metalloproteinase-9 (MMP-9) and its inhibitor (TIMP-1) during carotid artery stenting (CAS) and carotid endarterectomy (CEA).

BACKGROUND: Our aim was to compare the perioperative time courses of matrix metalloproteinase-9 (MMP-9) and its inhibitor (TIMP-1) in during carotid endarterectomy (CEA) and carotid artery stenting (CAS). METHODS: In our prospective study, twenty-five patients who were scheduled to undergo CAS were enrolled. We used a matched, historical CEA group as controls. Blood samples were collected at four time points: T1: preoperative; T2: 60 min after stent insertion; T3: first postoperative morning; and T4: third postoperative morning. Plasma MMP-9 and TIMP-1 levels were measured by ELISA. RESULTS: In the CEA group, the plasma levels of MMP-9 were significantly elevated at T3 compared to T1. In the CAS group, there was no significant difference in MMP-9 levels in the perioperative period. MMP-9 levels were significantly higher in the T3 samples of the CEA group compared to the CAS group. Significantly lower TIMP-1 levels were measured in both groups at T2 than at T1 in both groups. MMP-9/TIMP-1 at T3 was significantly higher than that at T1 in the CEA group compared to both T1 and the CAS group. CONCLUSIONS: CAS triggers smaller changes in the MMP-9-TIMP-1 system during the perioperative period, which may correlate with a lower incidence of central nervous system complications. Additional studies as well as cognitive and functional surveys are warranted to determine the clinical relevance of our findings. TRIAL REGISTRATION: NIH U.S. National Library of Medicine, Clinicaltrials.gov,NCT03410576, 24.01.2018, Retrospectively registered.

[Comparison of subthalamic nucleus planning coordinates in 1Tesla and 3Tesla MRI for deep brain stimulation targeting]. / A subthalamicus mag célkoordinátáinak összehasonlítása 1 és 3 Tesla MR-vizsgálattal mély agyi stimulációs mutétek tervezése során.

BACKGROUND AND PURPOSE: Deep brain stimulation (DBS) involves placing electrodes within specific deep brain nuclei. For movement disorders the most common indications are tremors, Parkinsons disease and dystonias. Surgeons mostly employ MR imaging for preoperative target selection. MR field geometrical distortion may contribute to target-selection error in the MR scan which can contribute to error in electrode placement. METHODS: In this paper we compared the STN target planning coordinates in six parkinsonian DBS patients. Each patient underwent target planning in 1T and 3T MRI. We statistically compared and analysed the target-, and the fiducial coordinates in two different magnetic fileds. RESULTS: The target coordinates showed no significant differences (Mann-Whitney test, p > 0.05), however we found significant difference in fiducial coordinates (p < 0.01), in 3T MRI it was more pronounced (mean ± SD: 0.8 ± 0.3 mm) comparing to 1T (mean ± SD: 0.4 ± 0.2 mm). CONCLUSION: Preliminary results showed no significant differences in planning of target coordinates comparing 1T to 3T magnetic fields.

Risk factors of migraine-related brain white matter hyperintensities: an investigation of 186 patients.

Brain white matter hyperintensities are more prevalent in migraine patients than in the general population, but the pathogenesis and the risk factors of these hyperintensities are not fully elucidated. The authors analyzed the routine clinical data of 186 migraine patients who were referred to the Outpatient Headache Department of the Department of Neurology, Medical School, University of Pécs, Hungary between 2007 and 2009: 58 patients with white matter hyperintensities and 128 patients without white matter hyperintensities on 3 T MRI. Significant associations between the presence of white matter hyperintensities and longer disease duration (14.4 vs. 19.9 years, p = 0.004), higher headache frequency (4.1 vs. 5.5 attacks/month, p = 0.017), hyperhomocysteinemia (incidence of hyperintensity is 9/9 = 100%, p = 0.009) and thyroid gland dysfunction (incidence of hyperintensity is 8/14 = 57.1%, p = 0.038) were found. These data support the theory that both the disease duration and the attack frequency have a key role in the formation of migraine-related brain white matter hyperintensities, but the effects of comorbid diseases may also contribute to the development of the hyperintensities.

Morphometric changes of gray matter in Parkinson's disease with depression: a voxel-based morphometry study.

The origin of the high rate of depression in idiopathic Parkinson's disease (PD) is unknown. We applied voxel-based morphometry (VBM), as a sensitive tool in detection of gray matter MR density alterations, to find differences in depressed and nondepressed PD patients. Patients with idiopathic PD were classified into depressed (DPD) and nondepressed (NDPD) groups based on the Montgomery-Asberg Depression Rating Scale (MADRS). Subsequently, a group comparisons were performed between depressed PD (n = 23), nondepressed PD (n = 27) and normal healthy controls (NC, n = 16). There was no difference in gray matter density comparing healthy controls to any PD groups. However, when NDPD and DPD cohorts were compared, density alteration of the bilateral orbitofrontal, bilateral rectal gyrus, and also the right superior temporal pole was detected in the depressed subgroup. Exploratory analyses revealed an inverse correlation of MADRS scores and severity of VBM alteration in these regions beside the right medial temporal gyrus, anterior and medial cingular gyrus, and parahippocampal gyrus. These results suggest that depression in PD is related to gray matter decrease in the bilateral orbitofrontal and right temporal regions as well as the limbic system.

Miyazaki Syndrome due to Ventriculoperitoneal Shunt Treatment.

BACKGROUND: The signs and pathomechanism of Miyazaki syndrome is presented through the case of a young female patient. CASE DESCRIPTION: The 33-year-old patient had undergone placement of a ventriculoperitoneal shunt with a pressure-adjustable valve for communicating hydrocephalus years before presenting to our department with the complaints of constant headache and unsteady gait. On the basis of the clinical picture and her history, plain and contrast-enhanced cranial and whole spine magnetic resonance imaging and magnetic resonance angiography examinations were performed, with the scans revealing signs indicative of cerebrospinal fluid hypotension typical of Miyazaki syndrome. CONCLUSION: The article discusses the available literature suggesting the underlying cause in such cases to be the dysfunction of the Starling resistor mechanism due to an improperly adjusted ventriculoperitoneal shunt, which results in excessive cerebrospinal fluid loss accompanied by consequent cerebral venous overflow with vertebral venous engorgement and compressive cervical myelopathy.

[Susac syndrome: neurologic, psychiatric, ophthalmologic otorhinolaryngologic and neuroradiologic features of a rare autoimmune disease]. / Susac-szindróma: egy ritka autoimmun kórkép neurológiai, pszichiátriai, szemészeti, fül-orr-gégészeti és neuroradiológiai vonatkozásai.

UNLABELLED: Encephalopathy, recurrent occlusion of retinal arteries and hearing loss comprise the clinical picture of Susac's syndrome. The correct diagnosis is frequently missed because of incomplete clinical signs or negligence of previous symptoms. Early diagnosis and treatment can halt the progression and prevent permanent disability. METHODS: Here, we describe a Hungarian case and review the clinical characteristics, diagnostic procedures and current concepts of therapy. RESULTS: A 30-year-old female was admitted to our neurology department because of change in her personality, apathy, and difficulty in concentration. Brain MRI indicated multiple hyperintense T2-weighted lesions including cerebellum and corpus callosum. Protein content of the CSF was markedly elevated. The recurrent bilateral loss of vision and hearing along with migraine in her previous 2,5-year-long medical history suggested Susac's syndrome. Fundoscopy and fluorescein angiography indicated multiple occlusions of the retinal arteries, audiography revealed bilateral hearing loss. Systemic autoimmune and connective tissue diseases and thrombophilia were excluded. The markedly elevated protein in the cerebrospinal fluid supported Susac's syndrome. Chronic treatment with methylprednisolone resulted in remission of clinical signs. DISCUSSION: Consideration of multiple clinical signs is an important key to the diagnosis of rare clinical entities like Susac's syndrome.

[The effect of carotid stenting on rheological parameters, free radical production and platelet aggregation]. / Carotisstent-beültetés hatása a rheologiai paraméterekre, a szabadgyök-képzodésre és a thrombocytaaggregációra.

INTRODUCTION: Carotid artery stenting has become a possible treatment of significant carotid stenosis. The risk of stent occlusion and restenosis might be increased by abnormal rheological conditions amplified platelet aggregation and free radical production during the operation. AIMS: The aim of this study was to assess the changes of the rheologic parameters, platelet aggregation, and oxidative stress after endovascular treatment of carotid stenosis. METHODS: 18 patients (11 men, ages 68 +/- 9 years and 7 women, ages 62 +/- 8 years) suffering from significant carotid stenosis and treated with carotid endovascular intervention were examined. Alteration in hemorrheological parameters as well as epinephrine-, ADP-, and collagen-induced platelet aggregation were evaluated. Oxidative stress was characterized by the determination of catalase activity. The measurements were carried out directly before and after the procedure and 1, 2, 5 days and 1 month following the intervention. Preceding the operation the patients were administered a maximum dose (300 mg) of clopidogrel. RESULTS: The hematocrit, the plasma fibrinogen concentration (Pfc) and whole blood-, and plasma viscosity (Wbv and Pv) decreased significantly immediately after stenting ( p < 0.001). By the fifth day following the intervention the Pfc, Wdv, Pv, red blood cell (Rbc) aggregation and ADP-induced platelet aggregation increased significantly ( p < 0.0001) compared to values measured after the procedure. At 1 month follow-up these parameters, excepting Wbv, decreased significantly compared to measurements made on the 5th day. On the other hand, catalase activity showed significant elevation by the end of the first month. CONCLUSION: Hemorrheological parameters and platelet aggregation showed specific changes following carotid stenting. Abnormal changes of the rheological conditions and increasing platelet activation are the most pronounced in the first week following stenting, which may lead to the stent's early occlusion. Oxidative stress production returned to baseline levels only by the end of the first month.

Endogenous testosterone concentration, mental rotation, and size of the corpus callosum in a sample of young Hungarian women.

In the present study brain laterality, hemispheric communication, and mental rotation performance were examined. A sample of 33 women were tested for a possible linear relationship of testosterone level and mental rotation with structural background of the brain. Subjects with a smaller splenial area of corpus callosum tended to have lower levels of testosterone (r =.37, p<.05). However, there were no significant differences in mean scores of mental rotation of object and hand between groups with high and low levels of testosterone. There was a significant difference in relative size of the 6th area (slice) of the corpus callosum between groups with good and poor scores on mental rotation of an object and also in relative size of the 4th and 5th slices of the corpus callosum between groups on mental rotation of the hand. The good and poor scorers' show different relations with the measures of the corpus. The mental rotation of hand was associated with the parietal areas of the corpus callosum, while the mental rotation of object was associated only with the occipital area. These observations suggest that higher testosterone levels may be associated with a larger splenial area, which represents an important connection between the parieto-occipitocortical areas involved in activation of mental images. Further srudy is encouraged.

[Application of vertebroplasty, neuronavigation and kyphoplasty in the treatment of multiplex osteoporotic vertebral fractures--case report]. / Vertebroplastica, neuronavigáció es kyphoplastica alkalmazása poroticus eredetu multiplex kompressziós csigolyatörések kezelésében.

Vertebroplasty is a image-guided therapeutic procedure, consisting of an injection of acrylic cement through a bone biopsy needle into a vertebral body. Main indication for vertebroplasty is painful vertebral body compression fracture due to osteoporosis. The procedure is an efficient mean with high success in pain release and prevention of further collapse of the treated vertebrae; however, the technique does not allow to realign the spine. Kyphoplasty was designed to address the kyphotic deformity. It involves the percutaneous placement of an inflatable bone tamp into a vertebral body (VB). Restoration of VB height and kyphosis correction is achieved by inflation of the tamp with contrast material liquid. After deflation a cavity is created that eases the cement application. The most modern way of guidance in spinal surgery is neuronavigation--the use of frameless stereotaxy. The system reformats patient-specific CT images acquired prior surgery, performs image fusion with intraoperative plain X-ray. Before the operation, the surgeon may create surgical plan and simulate advancement of a virtual instrument along one or more surgical trajectories. During surgery, the system tracks the position of specialized surgical instruments. All three modalities mentioned above have been applied in the treatment of our patient suffered from multiple osteoporotic vertebral body compression fractures. Using kyphoplasty an almost total VB height restoration could be achieved. The pain relief was more than 50% after both operation.

MRI-assessed volume of left and right hippocampi in females correlates with the relative length of the second and fourth fingers (the 2D:4D ratio).

Atrophy of the left or right side of the hippocampus has been related to cognitive deficits and psychiatric disease. In this study, we examined the correlation between the hippocampal volume laterality index and the relative lengths of the second (index finger) and fourth (ring finger) digits (2D:4D) in healthy female subjects. The 2D:4D ratio is fixed in utero, and the ratio is higher in women than in men. There is evidence that this ratio is an indicator of the intrauterine concentration of testosterone, which influences the development of different regions of the brain. Assessing the volume of different parts of the brain of 40 healthy adult female students by magnetic resonance imaging (MRI), we found that the 2D:4D ratio was associated with an asymmetry in the hippocampal sub-regions. Smaller volume on the left side was found in the posterior part of the hippocampus in females with a low (masculine type) 2D:4D ratio. On the other hand, smaller volume on the left side was found in the middle part of the hippocampus in females with a high (female type) 2D:4D ratio. Thus, the development of the middle and posterior regions of the hippocampal formation may respond in opposite ways to prenatal levels of testosterone. Other brain regions such as the amygdala, the cerebral cortex, the total volume hippocampus, and the head of the hippocampus did not show such a difference.

[Therapeutic possibilities in axonal injury caused by head trauma]. / A koponyasérülés által kiváltott axonkárosodás és kezelésének lehetóségei.

Traumatic brain injury is putting an extreme burden on societies all over the world. While surgical and neuro-intensive treatment is traditionally aimed at space occupying or focal lesions, traumatic brain injury is frequently associated with diffuse axonal injury, which significantly contributes to its morbidity and mortality. Current taught appreciates that diffuse axonal injury is a progressive event gradually evolving from focal alterations in axolemmal permeability and the underlying axonal ultrastructure to axonal disconnection, a process amenable of therapeutic interventions. This review is primarily focusing on the clinical/neuroradiological manifestation and our contemporary knowledge of the pathobiology of traumatically evoked (diffuse-) axonal injury with particular emphasize on recent- to date, primarily experimental-therapeutic approaches that in the future might offer potential aid to the head injured.

[Volumetric measurements of the hippocampus and amygdala with MRI in healthy adults]. / A hippocampus és az amygdala MRI-volumetriás vizsgálata egészséges egyénekben.

INTRODUCTION: Volumetric analysis of brain magnetic resonance images (MRI) measures structural changes associated with neurological and neuropsychiatric disorders. In recent years several studies have shown the utility of the volumetric measurement of the medial temporal lobe structures, especially the amygdala and the hippocampus in temporal lobe epilepsy, memory disorders, Alzheimer disease and schizophrenia. AIM: The purpose of this study was to measure and establish our normal values of the hippocampus and amygdala volumes. METHODS: All studies were performed using a 1.0 T Siemens unit with FISP 3D sequence. One millimeter, contiguous coronal scans of 40 healthy volunteers aged 19-26 years were obtained. The regions of interest were outlined using a mouse driven cursor. To determine the anatomic boundaries of the hippocampus and the amygdala the authors followed a generally accepted protocol previously described by C. Watson. RESULTS: The mean right and left hippocampal volumes were 2.12 cm3 (SD = 0.31) and 2.07 cm3 (SD = 0.3) and the mean right and left amygdaloid volume were 1.19 cm3 (SD = 0.19) and 1.2 cm3 (SD = 0.2) respectively. The mean asymmetry between the right and left hippocampus and amygdala was 3.17% and 3.48%, respectively. The inter-observer reliability range (alpha) was between 0.97 and 0.77. Subregional analysis of hippocampus was calculated as well. CONCLUSIONS: Normal volumetric data measured in our study fell in the midrange of the values in the literature. The volumetric analysis of the hippocampal subregions may allow assessment of providing more sensitive determination of the atrophic area, which may be important in epileptic disorders.

[Vertebroplasty: a percutaneous procedure for the treatment of diseased vertebral bodies of various etiologies]. / Különbözó etiológiájú csigolyatest-folyamatok percutan kezelési lehetósége: a vertebroplastica.

Percutaneous vertebroplasty is a radiologically guided invasive technique consisting of the injection of surgical cement into the diseased vertebral body. The procedure results in immediate pain relief and strengthening of the bone due to the polymerization process of the filling material hardening the vertebral body and preventing further collapse. This method is suitable for the treatment of osteoporotic vertebral fractures and of osteolytic vertebral body metastases without neurological signs, in multiple appearance as well. Authors present technical details of the procedure performed by bi-directional fluoroscopy and combined CT-fluoroscopy control as well as short-term experience obtained by treatment of 17 patients.

[Percutaneous transpedicular acrylate vertebroplasty for the treatment of lumbar vertebral hemangioma--case report]. / Percutan-transpedicularis akrilát vertebroplastica lumbalis csigolyatest-haemangioma kezelésére--esetismertetés.

The authors present the management of a patient suffering from lumbar vertebral hemangioma. Percutaneous transpedicular acrylate vertebroplasty was performed. This method has widely been used for the treatment of pathological vertebral bodies of different aetiology. A brief review of the literature of previous and current methods is presented. A detailed discussion is given why vertebroplasty was used in contrast to the radiological investigation where the patient's hemangioma proved to be a non-aggressive type. According to the authors' knowledge this is the first Hungarian publication of acrylate vertebroplasty for the treatment of vertebral hemangioma.

[Early onset dementias: three cases]. / Fiatalkori dementiák--Három beteg kórtörténetének ismertetése.

INTRODUCTION: Dementia is a decline of intellectual abilities. The etiology of dementia syndrome is diverse. The authors describe three patients with early-onset dementia. CASE REPORTS: The first patient was a 44 years old male with mild gait, body ataxia, memory loss, slowness and apathy Investigations proved AIDS dementia syndrome. In the second case of a 37 years old female patient, herpes simplex encephalitis was suspected due to sudden onset of speech arrest and to brain MRI and CSF findings. Her symptoms improved during antiviral treatment but later progressive dementia developed. CSF serological tests proved the presence of neurolues-dementia paralytica. The third patient was a 38-years-old female. Neurological examination was performed because of progressive memory loss, changed behaviour and impaired attention. Neuropsychological test showed severe dementia. Metachromatic leukodystrophy was proven by decreased arylsulfatase activity. CONCLUSIONS: It is not easy to recognize the early symptoms of dementia. In these cases, besides detailed history, neurological examination and neuropsychological tests, brain MRI and cerebral spinal fluid serological tests were indispensable for a correct diagnosis, especially in the young patients.

Natural course of LGI1 encephalitis: 3-5 years of follow-up without immunotherapy.

Antibodies against LGI1 (leucin-rich glioma-inactivated 1 protein) are associated with limbic encephalitis (LE), which is characterized by a favorable outcome following immunotherapy. Here, we present two cases, where antibodies against LGI1 were detected in the sera 36 and 53 months after acute LE, respectively, and none of the patients received immunotherapy. LE showed characteristics of LGI1 encephalitis in both cases, including low sodium content in the sera; disorientation, hallucination, short-term memory loss; and epileptic seizures. One patient had faciobrachial tonic seizures. MRI indicated bilateral inflammation of the hippocampus in one case. We reviewed longitudinal clinical and MRI data covering 53 and 36 months after LE without immunotherapy, respectively. Both patients became seizure-free and spontaneously recovered with mild/moderate cognitive impairment. No relapses have been observed. Follow-up brain MRI indicated early hippocampal sclerosis and global brain atrophy in one case characterized by more pronounced cognitive deficit. Memory and verbal fluency were affected most during the natural course of LGI1 encephalitis. LGI1 encephalitis had a monophasic course and spontaneously improved, suggesting that a relatively benign natural course may contribute to the favorable outcome observed after immunotherapy. Our data also indicate that LGI1 antibodies can be present in the sera without clinical disease activity.

Intracranial migration of silicone oil from an eye with optic pit.

BACKGROUND: The origin of subretinal fluid in eyes with optic pit remains controversial. METHODS: Case report. RESULTS: The authors found that silicone oil, implanted into an eye that developed proliferative vitreoretinopathy after surgery for optic pit-related macular detachment, has migrated into the subarachnoid space. CONCLUSIONS: As this case shows, cerebrospinal fluid may migrate into the submacular space in eyes with optic pits.

Implanted deep brain stimulator and 1.0-Tesla magnetic resonance imaging.

There is a great need for MRI examinations of patients who have previously undergone deep brain stimulator (DBS) implantation. The current guidelines pertain only to a 1.5-Tesla horizontal-bore scanner complying with strict safety regulations. Moreover, almost all published in vitro and in vivo studies concerning patient safety are carried out on 1.5 Tesla MR scanners. The aim of our work is to share our clinical experience of 1.0-Tesla brain MR imaging. During the past four years, 34 patients with different types of implanted DBS systems underwent 1.0-Tesla MR examinations to answer diagnostic or clinical questions. Apart from the scanner type applied, all other safety instructions were strictly followed. The MRI itself made no significant difference to the measured impedances or the stimulation parameters required to achieve the optimal therapeutic results. From theoretical considerations, it may be assumed that 1.0-Tesla MRI can be performed safely on DBS-implanted patients, provided that all other recommendations are adhered to.