Search results

Hypertension and nephrology

SEPTEMBER 10, 2019

[Role of IL-10 family of cytokines in kidney fibrosis]

PAP Domonkos, VERES-SZÉKELY Apor, SZEBENI Beáta, SZIKSZ Erna, KISS József Zoltán, TAKÁCS István Márton, REUSZ György, SZABÓ J. Attila, VANNAY Ádám

[Chronic renal failure is a major health problem, affecting 8 to 16% of the population. Regardless of the etiology the common hallmark of chronic renal failure is inflammation, leading to the activation of renal myofibroblasts. Chronic activation of myofibroblasts lead to abnormal accumulation of extracellular matrix, disruption of the architecture of the kidney and finally to reduced renal function. Although our knowledge is rapidly expanding about the pathomechanism of chronic renal failure, we still have no drug to treat or hinder the progression of the disease. In our present review article, we summarize the role of the cytokines of the IL-10 family in renal scarring.]

Hypertension and nephrology

OCTOBER 20, 2018

[Hypertension and atrial fibrillation. Part 1. - Epidemiological data. The pathomechanism of PF in hypertension]

KÉKES Ede

[Atrial fibrillation (PF) is the most common arrhythmia on the basis of analyzes conducted in different regions of the world. The main reason for this is the aging of the population. High blood pressure is one of the major factors of mortality in both developed and poor economical countries. The combined presence of the two diseases presents many hazards to our body. The most significant of these is the development of thromboembolic stroke, which is constantly increasing with age. The author analyzes in detail the aetiology called atrial cardiomyopathy, behind which there are complex structural, architectural, contractile and electro-physiological changes and leads to clinical manifestation of PF.]

Lege Artis Medicinae

AUGUST 30, 2018

[How to diagnose idiopathic pulmonary fibrosis. Part 2]

HORVÁTH Ildikó, KERPEL-FRONIUS Anna, HARKÓ Tünde

[Idiopathic pulmonary fibrosis is a severe irreversible lung disease with a progressive course. The disease onset is hard to discover due to the unspecific signs and symp­toms. It occurs mainly in elderly people. In the past decades its prevalence has increased continuously. Physical examination, restrictive pattern on lung function test with decreased diffusion capacity are characteristic features of the disease. Chest X-ray showing fibrotic pattern also points toward the diagnosis of idiopathic pulmonary fibrosis. Differential diagnosis is based on high resolution komputertomográfy. Diag­nosis of IPF is based on the appearance of usual interstitial pneumonia pattern together with the lack of external risk factors and autoimmune or other diseases also known to cause this pattern seen on chest imaging. If no firm diagnosis can be built lung biopsy is required. Multidis­ciplinary teams from clinician, radiologist and pathologist are set in predefined centres that could provide care with novel antifibrotic drugs. These can slow disease progression and are in the frontline in the treatment of the disease. Further research is required to understand the pathomechanism and foster the discovery of further treatment options. ]

Clinical Neuroscience

JULY 30, 2018

[Paradigm shift in management of patients with vertigo and imbalance]

MIKE Andrea, TAMÁS T. László

[Dizziness is one of the most common causes of medical visits. Management of the dizzy patient may be challenging both for the general practitioner, in emergency departments, and special clinics, as behind a seemingly homogeneous clinical presentation several very different etiologies may occur. Research of the last two century enriched our knowledge about physiology and pathophysiology of the vestibular system. Much knowledge is now available about the labyrinth being able to sense head motions and gravity, processing of afferent vestibular stimuli, reflectory oculomotor and postural control, or recovery of the vestibular system. Based on scientific results new beside tests have been introduced including provocation maneuvers for detecting ectopic otoliths in different semicircular canals, head impulse test to examine function of the vestibulo-ocular reflex, and the HINTS+ battery for differentiation of peripheral or central origin of an acute vestibular syndrome. Technical innovations like videooculography and vestibular evoked myogenic potentials enable us to selectively and side-specifically examine the function of all six semicircular canals and two otolith organs. Pathomechanism of disorders with vertigo and dizziness became more clear resulting in the development or amendment of diagnostic criteria of several vestibular disorders including vestibular migraine, Menière’s disease, benign paroxysmal positional vertigo, persistent postural-perceptual dizziness, bilateral vestibulopathy. Broader knowledge about the pathomechanism promoted the development of new therapeutic methods like different repositioning maneuvers in benign paroxysmal positional vertigo, pharmaceutical therapies, vestibular rehabilitation, and psychotherapy. We aimed to summarize the novelties in the field of oto-neurology.]

Hypertension and nephrology

DECEMBER 10, 2017

[Gout, hyperuricaemia and cardiovascular risk - Effects of allopurinol]

KÉKES Ede

[Hyperuricemia has an increasing clinical relevance due to its pathomechanism and its presence and adverse effects on cardiovascular, metabolic and renal diseases today. Its presence is a world phenomenon and in our country, we have seen increasing incidence rates during the screening surveys in recent years. Convincing evidence suggests that the high uric acid values in cardiovascular and renal diseases is an independent risk factor for CV mortality and their clinical manifestations. Experimental and clinical evidences indicates that in addition to gout, all high uric acid levels should be considered to initiate the XO inhibitor allopurinol treatment. Recently, in some diseases, in the treatment of the underlying disease (especially elderly hypertension, ischemic heart disease, chronic heart failure, chronic kidney failure) is also considered as an adjunct therapy.]

Hypertension and nephrology

OCTOBER 20, 2017

[New results on the pathomechanism of antibody-mediated renal allograft rejection]

MEZÔ Blanka, ANDREAS Heilos, RUSAI Krisztina, PROHÁSZKA Zoltán

[Antibody mediated rejection (ABMR) is a severe clinical problem which is the major immunological cause of kidney transplant failure and may develop slowly months or years after transplantation. According to current knowledge, late ABMR is classically caused by the development of donor specific antibodies (DSA) and the complement system is believed to contribute to tissue damage. The detection of ABMR has been facilitated by improved techniques and new test, resulting in changes of the diagnostic criteria from time to time. The clinical interpretation of DSAs is still not clear however the complement binding ability could help to judge their relevance. In this review we discuss the new results on the pathomechanism and current diagnostic guideline of ABMR. Identification and treatment of ABMR before onset of clinical symptoms is still a big challenge but may lead to a significantly better outcome. In our study we are investigating the role of the complement system including quantitative and genetic testing of several complement proteins that can serve as a diagnostic/prognostic marker of the disease.]

Clinical Neuroscience

JULY 30, 2017

[Calcium ion is a common denominator in the pathophysiological processes of amyotrophic lateral sclerosis]

PATAI Roland, NÓGRÁDI Bernát, MESZLÉNYI Valéria, OBÁL Izabella, ENGELHARDT József István, SIKLÓS László

[Amyotrophic lateral sclerosis (ALS), the most frequent motor neuron disease is characterized by progressive muscle weakness caused by the degeneration of the motor neurons in the spinal cord and motor cortex. However, according to the recent observations, ALS is a rather complex syndrome which frequently involves symptoms of cognitive impairment. Therefore, ALS cases can be interpreted in a clinico-pathological spectrum spanning from the classical ALS involving only the motor system to the fronto-temporal dementia. The progression of the disease, however, manifested in the degeneration of the upper and lower motor neurons, is based on the same complex pathobiology. The main elements of the pathomechanism, such as oxidative stress, excitotoxicity, immune/inflammatory processes and mitochondrial dysfunction are well described already, which operate in orchestrated way and amplify the deleterious effect of each other. It is assumed that calcium ions act as a catalyst in this interaction, hence each of the individual mechanisms has strong, positive and reciprocal calcium dependence thus may combine the individual pathological processes into a unified escalating mechanism of neuronal destruction. This review provides an overview of the role of calcium in connecting and amplifying the major mechanisms which lead to degeneration of the motor neurons in ALS. ]

Clinical Neuroscience

SEPTEMBER 30, 2016

[Functional magnetic resonance imaging studies in pain research]

ÉDES Andrea Edit, JUHÁSZ Gabriella

[Functional imaging studies opened a new way to understand the neural activity underlying pain perception and the pathomechanism of chronic pain syndromes. In the last twenty years several results of functional magnetic resonance imaging (fMRI) studies have been published about examining the different aspects of complex pain experience. The aim of these studies is to understand the functioning of the pain control system, the so-called pain matrix, activated by acute nociceptive stimulus. Another important field of pain research is the investigation of neuronal processes underlying chronic pain, since the pathomechanism of this is still unclear. Our review aims to provide insight into the methods of pain research using fMRI and the achievements of the last few years.]

Clinical Neuroscience

JULY 30, 2016

[Meningioma and pregnancy]

BENCZE János, VARKOLY Gréta, HORTOBÁGYI Tibor

[Meningiomas are one of the most frequent primary intracranial tumours, representing one-third of all intracranialneoplasms. The vast majority of meningiomas are histologically benign, but recurrence and progression is quite frequent. They occur usually between the 6th and 7th decade, the female/male ratio is 3:2. Although rare in pregnancy, when occurring, they can cause serious, life-threatening complications due to rapid growth and unfavourable localisation. There are two dominant hypothesis explaining rapid growth in pregnancy: the role of hormonal effects and hemodynamic changes. Several studies tested these theories but none provided unequivocal answer probably because the pathomechanism is complex and multifactorial. We provide an overview of the pathomechanism of meningiomas in pregnancy with emphasis on data obtained by advanced neuropathological, molecular biological, bioinformatic, imaging and epidemiological methods. A better understanding of the processes leading to meningioma development and growth in pregnancy will help us to design personalized therapy and reduce morbidity and mortality.]

Hypertension and nephrology

JUNE 20, 2016

[Sclerosis tuberculosa. Newer aspects of therapy and care]

REUSZ György, DEÁK-PÁL Ákos, REMPORT Ádám

[Tuberous sclerosis (TSC) is an autosomal dominant disease characterized by the development of hamartomas in various organs with variable frequency. The major organs involved are the skin (70%), the brain (75%), the heart (50%) and the kidney (80%). Life threatening acute and chronic events are due initially to cardiac involvement, later neurologic complications and after the second and third decade nephrological and pulmonological involvement may predominate. Skin and osteo - skeletal disease may lead to disfiguring appearance causing additional psychological burden to the patient. Uninhibited activation of the mTOR signaling pathway is at the center of the disease process. The discovery of the pathomechanism established the base of the up-to-date medical therapy presenting a real alternative to the classical supportive and surgical treatment. Due to the progressive nature of the disease early recognition, best standard care and treatment according to the disease stage is of crucial importance. Optimal therapy is based on internationally recognized guide-lines and should be controlled through specialized, multidisciplinary centers.]