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Clinical Neuroscience

JULY 30, 2020

[Objective measurement of manual dexterity of Parkinson patients operated with DBS]

SZÁNTÓ Ildikó, SÁNDOR Balázs, KATONA Krisztián, NAGY Máté, JUHÁSZ Annamária, BALÁS István

[The evaluation of hand dexterity is an important marker for the success of DBS (deep brain stimulation) operation in patients with Parkinson’s disease. In this study we applied a simple, semiquantitative optical dental plaque staining technique for the evaluation of the hand dexterity. Ten patient with Parkinson’s disease were involved in the study. After dental students aided tooth brushing, bacterial dental deposits (plaque) were stained then photographed, and quantified under standard conditions before and after DBS surgery. Our results showed a significant decrease in dental plaque deposits after DBS operation. This simple technique seems to be a routinely applicable marker for the evaluation of the hand dexterity. Our future plans is repeating the previous experiement on a higher number of cases.]

Clinical Neuroscience

SEPTEMBER 30, 2018

[Diagnosis of multiple sclerosis: A review of the 2017 revisions of the McDonald criteria]


[The revolutionary progress of research in neuroimmu­nology has led to the introduction of disease modifying therapies in multiple sclerosis at the end of the last century. The International Panel on Diagnosis of Multiple Sclerosis originally proposed the 2001 McDonald criteria to facilitate the diagnosis of MS in patients with the first objective neurological symptom(s) suggesting demyelinating event, when magnetic resonance imaging is integrated with clinical and other paraclinical diagnostic methods. New terms have been introduced to substitute clinical information by MRI: dissemination in space - indicating a multifocal central demyelinating process and dissemination in time - indicating the development of new CNS lesions over time. The criteria for diagnosis of Multiple Sclerosis have continuously evolved, they were modified in 2005 and 2010 allowing for an earlier and more accurate diagnosis of MS over time, and they provided the most up-to-date guidance for clinicians and researchers. The last recommended revisions relied entirely on available evidence, and not on expert opinion thereby reducing the risk of the misdiagnosis. The 2017 McDonald criteria continue to apply primarily to patients experiencing a typical, clinically isolated syndrome. In this review, we provide an overview of the recent 2017 revisions to the criteria of dissemination in space and time with the importance of the presence of CSF-specific oligoclonal bands; keeping fully in mind that there is no better explanation for symptoms than diagnosis of MS. In the future, validation of the 2017 McDonald criteria will be needed in diverse populations. Further investigations are required on the value of new MRI approaches, on optic nerve involvement, on evoked potential and optical coherence tomography, in order to assess their possible contribution to diagnostic criteria.]

Clinical Neuroscience

SEPTEMBER 30, 2014

[Retinal ganglion cell layer and visual function in patients with progressive external ophthalmoplegia caused by common mtDNA deletion]

FARZANEH Naghizadeh, VARGA Edina Tímea, MOLNÁR Mária Judit, HOLLÓ Gábor

[Aim - Mitochondrial (mt) disorders are metabolic conditions with multiorgan involvement, which often cause neuroophtalmological symptoms. The aim of the study was to investigate the relation between progressive external ophthalmoplegia (PEO), visual pathway and mitochondrial DNA (mtDNA) mutations in patients younger than 55 years of age. Methods - Five female patients (35 to 53 years of age) with mithochondrial disease were investigated. Automated threshold perimetry (Octopus G2 test), scanning laser polarimetry (GDx-VCC and GDx-ECC) and Fourier-domain optical coherence tomography (RTVue-100 OCT) were used in addition to detailed ophthalmological examination and evaluation of visually evoked potentials (VEP). Frequent mutations of the mtDNA were investigated in the patients’ blood and muscle samples. Results - PEO of various severity levels was found in all patients, using clinical tests. Genetic testing showed “common deletion” of mtDNA in all cases. For both eyes of 4 patients functional and structural ophthalmic tests had normal results. In one patient decreased visual acuity, reduced retinal nerve fiber layer thickness and prolonged L3 VEP latency time were found without optic disc damage and visual field deterioration. Conclusion - In 4 of our 5 patients with PEO due to common deletion of mtDNA retinal ganglion cells and visual function remained normal for a long period of life.]

LAM Extra for General Practicioners

FEBRUARY 18, 2014

[Contact lens wear ]


[The improvement of contact lens materials and types have made it possible to use contact lenses for visual rehabilitation besides optical and cosmetic use, The high oxygen permeability of contact lenses have extended the age limits for contact lens wear and encouraged clinicians to use them for therapeutic purposes, especially for pain relief and aiding cornea epithelialisation. Con­tact lenses can be worn safely for years if rules of hygiene are followed. Their use is most frequently abandoned because of contact lens related dry eye. Despite the high oxigen permeability, their prolonged wear increases the risk of inflammation.]

Lege Artis Medicinae

DECEMBER 18, 2013

[Contact lens wear]


[The improvement of contact lens materials and types have made it possible to use contact lenses for visual rehabilitation besides optical and cosmetic use, The high oxygen permeability of contact lenses have extended the age limits for contact lens wear and encouraged clinicians to use them for therapeutic purposes, especially for pain relief and aiding cornea epithelialisation. Contact lenses can be worn safely for years if rules of hygiene are followed. Their use is most frequently abandoned because of contact lens related dry eye. Despite the high oxigen permeability, their prolonged wear increases the risk of inflammation.]

Hypertension and nephrology

FEBRUARY 20, 2012

[Multi-photon fluorescence microscopy in the revealance of kidney physiology]


[In this review we discuss the importance of the multi-photon fluorescence microscopy in the relevance of kidney physiology. Most functions of the kidney, including the clearance of metabolic waste products, maintenance of body fluid, electrolyte homeostasis and blood pressure are achieved by complex interactions between multiple renal cell types and previously inaccessible structures that have been difficult to study. Multi-photon fluorescence microscopy offers an advanced imaging technique for deep optical sectioning of living tissues and organs with minimal deleterious effects. Dynamic regulatory processes and multiple functions in the intact kidney can be quantitatively visualized in real time with submicron resolution. This article reviews the application of multi-photon imaging technology that provided the most complex, spatial and temporal portrayal of renal function, depicting as well as analyzing the components and mechanisms involved in renal (patho)physiology such as glomerular structure and function, tubular transport, tubular-vesicular interaction and the intrarenal renin-angiotensin system.]

Lege Artis Medicinae

NOVEMBER 20, 2011

[Clinical impact of acetylsalicylic acid resistance in patients with cerebrovascular disease]

FEHÉR Andrea, PUSCH Gabriella, HARANG Gábor, GASZTONYI Beáta, PAPP Előd, WERLING Dóra, MENYHÁRT Marianna, KOMÁROMY Hedvig, SZAPÁRY László, FEHÉR Gergely

[INTRODUCTION - In the past few years, a number of studies have been published about acetylsalicylic acid resistance and its potential clinical consequences. PATIENTS AND METHODS - 281 patients with chronic cerebrovascular disease have been involved in our study. The patients were divided in two groups on the basis of their optical aggregometer results (acetylsalicylic acid responder vs. resistant). We compared the risk profiles, drug therapies, laboratory parameters and clinical outcomes of the two groups. RESULTS - Acetylsalicylic acid resistant patients were more likely to be women [23 (45.1%) vs. 92 (40%) (p<0.05)], to smoke (38% vs. 25%), have hypertension (92 vs. 78%), hypercholesterolaemia (5.69 vs. 4.85 mmol/l), and elevated LDL-levels (3.71 vs. 2.85 mmol/l), triglyceride levels (2.78 vs. 1.97 mmol/l) and hsCRP levels (17.89 vs. 7.09 mmol/l) (p<0.01). The use of statins was more frequent (56% vs. 36%) in the responder group (p<0.01). Platelet aggregation values (triggered by agonists) were significantly correlated with cholesterol, LDL, triglyceride and hsCRP levels (p<0.05). Adverse outcomes were reached in 13 (25.5%) acetylsalicylic acid nonresponders and 32 (13.9%) acetylsalicylic acid responder patients (p<0.01). In a multivariate analysis, however, only smoking (OR: 2.38, CI: 1.77-5.44) and increased LDL (OR: 3.01, CI: 2.34-5.67) and hsCRP levels (OR: 2.44, CI: 1.55-7.02) (p<0.05) were independent risk factors of adverse vascular outcomes. CONCLUSION - On the basis of our results, acetylsalicylic acid resistance was associated with a worse clinical outcome, but it was not an independent risk factor of future ischaemic events. Our results implicate that inappropriate prevention therapy might have a role in this phenomenon.]

Lege Artis Medicinae

OCTOBER 20, 2011

[Examination of the efficacy of clopidogrel-hydrogen-sulphate in patients with cerebrovascular disease]

SZAPÁRY László, FEHÉR Gergely

[INTRODUCTION - On the basis of current guidelines, acetylsalicylic acid plus dipyridamole or clopidogrel monotherapy should be used for the long-term treatment of patients with cerebrovascular disease, whereas acetylsalicylic acid monotherapy is not recommended. The efficiency of recently introduced generic clopidogrels has not been assessed in patients with a history of acute stroke. PATIENTS AND METHODS - 100 patients with a history of acute stroke or transient ischaemic attack were involved in our study. The patients received acetylsalicylic acid monotherapy in the first 48 hours, followed by clopidogrel-hydrogen sulphate (Egitromb®) monotherapy. The efficiency of the therapy was assessed on day 7 and 28 of medical therapy. RESULTS - At the first measurement (day 7) after clopidrogel-hydrogen sulphate treatment, the therapy seemed to be inefficient in 11 patients (11%). A strong, clinically significant correlation was found between blood pressure values, blood glucose and lipid parameters, hsCRP levels and platelet aggregation values. At the second measurement (day 28), an aggressive secondary preventive threapy resulted in the normalisation of the above mentioned parameters, and the efficiency of platelet aggregation inhibtion therapy was also improed, whereas no patients proved to be resistant. No unwanted events or haemorrhagic complications were registered. CONCLUSIONS - On the basis of the result of our study, treatment with clopidogrel- hydrogen sulphate is safe and efficient both clinically and on the basis of optical aggregometry. The significance of an aggressive secondary preventive therapy should be considered as a factor that might influence the efficiency of thrombocyte aggregation inhibitory therapy.]

Lege Artis Medicinae

JUNE 22, 2004


NAGY Zoltán Zsolt, SZABÓ Viktória, SÜVEGES Ildikó

[Refractive surgical procedures have become more and more popular worldwide. The ultimate aim of these procedures is to change the refractive power of the cornea in order to achieve good uncorrected visual acuity and to get rid of the optical correction need. In this article, the history of refractive surgery, the most important characteristcs and types of the excimer lasers, the most up-to-date refractive surgical techniques and alternative refractive procedures are presented. The lower and upper limits of surgical correction, the newest diagnostic and technical development, i.e. the possibilities of wavefront technology are also discussed.]

Hungarian Radiology

OCTOBER 20, 2009

[Role of imaging in the managment of colorectal cancer]


[Colorectal cancer is the third most common cancer worldwide and the second most common cause of cancer death in Hungary. Diagnosis requires the examination of the entire large bowel by means of radiological and/or endoscopic techniques. Colorectal cancer primarily develops from adenomatous polyp over a period of 10-15 years. Tumour staging is crucial for the prognosis and for the planning of the most suitable anticancer therapy. The role of imaging in colorectal cancer is increasing with the change in complex tumour therapy. With advances in ultrasonography (US), computed tomography (CT), and magnetic resonance imaging (MRI) techniques accuracy of imaging has improved. The accuracy of CT improved with the advent of the multislice technique (MDCT). Sensitivity and specificity of CT colonography (CTC) in colon polyps and cancer is over 90%, therefore it is one of the screening tools. Accuracy of the CTC is comparable to the optical colonoscopy, complements conventional colonoscopy well and it is an effective tool in the right hands. Endorectal US (ERUS) depicts the anatomic layers of the rectal wall with high degree of accuracy, therefore it is the best method for the evaluation of the lower tumour stage. High resolution MRI is the most suitable technique for predicting rectal tumor stage, therefore it has been established as the standard for preoperative assessment of rectal cancer.]