Search results

Clinical Oncology

FEBRUARY 28, 2020

[Neoadjuvant and palliative drug therapy for bladder cancer]


[The survival of patients with muscle-invasive localized bladder cancer is more favorable if they receive neoadjuvant or adjuvant cisplatin-based chemotherapy before or after cystectomy. Based on the meta-analyses, in case of neoadjuvant cisplatin-based chemotherapy, the 5-year survival benefi t is 5-16%. The outcome is even more favorable in case of patients who respond well to neoadjuvant chemotherapy (pathological complete remission rate 12–50%). More than 3 months delay of cystectomy does not signifi cantly reduce the survival if chemotherapy is performed before the operation. Results of adjuvant phase III studies and meta-analyses are not so unambiguous as neoadjuvant data, but chemotherapy seems to infl uence favorably PD-L1 expression the survival, especially in case of pT3/4 and/or N+ (and high grade or margin positivity) cases. According to the recent publications, outcome data of patients have been effective in case of progression after platinum therapy, in or after second-line and in fi rst-line therapies for cisplatin ineligible, PD-L1 positive patients, respectively. Survival and tumor response data are very promising; in particular stages, they seem to be more effective than the previously administered chemotherapies. Current and ongoing trials are investigating the combinations of new remedies with other immunotherapeutic agents or chemotherapies as well as trying to identify biomarkers in order to further increase effectiveness.]

Hypertension and nephrology

NOVEMBER 04, 2020

[Hypertension and Covid-19 - part II.]


[The authors review those components and mechanisms in the two major regulatory systems of circulation and inflammation-coagulation whose internal balance and interactions are pathologically altered during SARS-CoV-2 infection, thereby enhancing lung and systemic inflammation threatening to enter into severe clinical condition. They examine the question of how – in addition to potentially promoting the coronavirus cellular entry and penetration – the RAS inhibitor therapy affects these changes and whether can be supposed difference between the anti-/pro-inflammatory influence of ACEi and ARB treatment of old hypertensive patients representing a remarkably high proportion of victims in COVID-19 epidemic. The paper is focussing to the pathomechanical background of inflammation beyond the direct immunological response to the infection: to the significance of immunological alterations characterizing old hypertensive patients also in basic condition, and to the key components as angiotensin II, ACE2, angiotensin1-7, bradykinin, ARB and ACEi. In conclusion a consideration on optimal point of action is offered in RASi treated and SARS-CoV-2 infected (old) hypertensive patients.]

Clinical Neuroscience

SEPTEMBER 30, 2020

[Prognostic significance of invasion in glioblastoma]


[Glioblastoma is the most common malignant CNS tumor, its surgical removal is hindered by the tumors invasive nature, while current anti-tumor therapies show limited effectiveness – mean overall survival is 16-24 months. Some patients show minimal response towards standard oncotherapy, however there are no routinely available prognostic and predictive markers in clinical practice to identify the background of mentioned differences in prognosis. This research aims to identify the prognostic significance of invasion-related extracellular (ECM) components. Patient groups with different prognoses were created (OS: group A <16 months, group B > 16 months), and internationally recognized prognostic markers (IDH1 mutation and MGMT promoter hyper-methylation) were tested in the flash-frozen tumor samples. Furthermore, the mRNA levels of 46 invasion-related ECM molecules were measured. Clinical data of the patients who have been operated on at the University of Debrecen Clinical Center Department of Neurosurgery and treated at the Department of Clinical Oncology showed no significant differences except for survival data (OS and PFS), and reoperation rate. All samples were IDH wild type. MGMT promoter hypermethylation rate showed significant differences (28.6% vs 68.8%). The expressional pattern of the invasion-related ECM molecules, i.e. the invasion spectrum also showed major differences, integrin β2, cadherin-12, FLT4/VEGFR-3 and versican molecules having signficantly different mRNA levels. The accuracy of the inivasion spectrum was tested by statistical classifier, 83.3% of the samples was sorted correctly, PPV was 0.93. The difference found in the reoperation rate when comparing different prognostic groups aligns with literature data. MGMG promoter region methylation data in Hungarian samples has not been published yet, and further confirming current knowledge urges the implementation of MGMT promoter analysis in clinical practice. Studying the invasion spectrum provides extra information on tumors, as a prognostic marker it helps recognizing more aggressive tumors, and calls attention to the necessity of using anti-invasive agents in GBM therapies in the future.]

Clinical Neuroscience

SEPTEMBER 30, 2020

A rare entity of acquired idiopathic generalised anhidrosis which has been successfully treated with pulse steroid therapy: Does the histopathology predict the treatment response?

ÖKTEM Özdemir Ece, ÇANKAYA Şeyda, UYKUR Burak Abdullah, ERDEN Simsek Nazan, YULUG Burak

Acquired idiopathic generalised anhidrosis is an uncommon sweating disorder characterized by loss of sweating in the absence of any neurologic, metabolic or sweat gland abnormalities. Although some possible immunological and structural mechanisms have been proposed for this rare entity, the definitive pathophysiology is still un­clear. Despite some successfully treated cases with systemic corticosteroid application, the dose and route of steroid application are controversial. Here, we present a 41-year-old man with lack of genera­lised sweating who has been successfully treated with high dose pulse intravenous prednisolone. We have discussed his clinical and histopathological findings as well as the treatment options in view of the current literature.

Lege Artis Medicinae

SEPTEMBER 30, 2020

[The pain-trigger role of cytokines in the nervous system – the direct analgesic effect of anti-cytokine therapy ]


[Nociceptive, neuropathic and central me­chanisms are involved in the perception, transmission and processing of chronic pain and shaping of cerebral pain image. Alar­mins – molecules alarming defence and signing the presence of pathogens and tissue damage - trigger a series of pathogenic events resulting in inflammatory pain stimuli. Proinflammatory cytokines play a determining role in the pain perception at the level of the nervous system. Continuous inflammatory stimuli while sensitizing the periferic and central neurons activate the pain-related cerebral areas and develop the complex pain image, the pain matrix. Ce­reb­ral functional connections are operating in networks and can be visualized by functional MRI. Cytokines activate the neurons directly or indirectly by other neuromediators. Cytokine receptors are expressed on no­ciceptors and even on higher-level neurons and on various non-neural cells, such as microglia and astrocytes. The most ubiquitous cytokines are the Tumour Necrosis Factor and Interleukin 6 in the nervous sys­tem. The signaling pathways are the Nuclear Factor κB and the Janus-kinase enzyme system. The proinflammatory cytokines and the Janus-kinase are therefore primary therapeutic targets. Anti-cytokine biologicals and small molecular kinase inhibitors decrease the pain and improve functional activity in rheumatoid arthritis. Decrease of pain was more pronounced than expected only from the decrease of the clinical biomarkers of inflammation. The early and ra­pid painkiller effect of targeted biological and chemical-biological response modifiers is attributed to their direct analgesic effect on the brain.]

Lege Artis Medicinae

JULY 01, 2020

[Minority students in Hungarian medical training]

SZÉL Zsuzsanna

[General health of minority people is usually worse than that of their majority peers and they often expe rience discrimination in the healthcare system. According to international literature, physicians belonging to any minority group are more likely to care for other mi nority people, therefore they may play a key role in reducing healthcare inequities. Anonymous, online questionnaire was distributed to medical students of the four Hungarian universities with medical schools (response rate was 8.86%). In this paper, we analyze our collected data about perceived discrimination with descriptive statistical methods. Results of confirmative statistical analyses (statistical tests) were considered exploratory in nature. 29.6% of respondents self-identified as a member of any minority. 63.0% of minority students and 53.8% of women indicated that they realized discriminated or were harassed in the last 12 months, meanwhile, 37.8% of non-minority students and 31.9% of males have experienced discrimination. Dis­cri­mi­na­tion related to ethnic origin, sexual orientation and disability are regarded as the most widespread forms of discrimination according to our respondents. Students are most likely to say that there is no age related discrimination on the grounds of age – both being under 30 years old (12.0%) and being over 55 (8.6%). Being the member of any minority group seems to have no effect on student’s/ one’s opinion how widespread the forms of dis crimination are. Minority students are more comfortable to work with a member of another minority. However male students feel more uncomfortable to work with a member of sexual or gender minorities compared to female counterparts. Mi­no­rity students tend to be more critical to the universities’ efforts to enhance diversity. Minority students and females may play a key role in reducing discrimination in medical training and in the healthcare system and in providing high-quality care for individuals who belong to any minority. Although there are more females than males in medical training they still report higher occurrence of perceived discrimination. However, it is important to emphasize the low response rate in our study, which does not allow us to draw any general conclusions.]

Clinical Neuroscience

JULY 30, 2020

[Recurrent inhibition during Jendrassik maneuver]


[Objective – Conflicting theoretical models exist regarding the mechanism related to the ability of the Jendrassik maneuver to reinforce reflex parameters. Our objective was to investigate if vigorous handgrip would induce changes in recurrent inhibition of soleus motoneurons. Method – Soleus H reflex was evoked by stimulating the tibial nerve at rest and during bilateral vigorous handgrip, alternating single (H1) and paired stimulation (H2). At paired stimulation we used interstimulus intervals of 10, 15, 20 and 25 ms and supramaximal test stimulus. H1- and H2-wave amplitudes were expressed as percentage of maximal M-wave amplitude. Conditioned H2 wave maximal (H2max) and minimal (H2) amplitudes evoked at rest and expressed as a percentage of the unconditioned H1max amplitude were compared with the corresponding values obtained during handgrip by means of paired Student test and Bonferroni correction. Subjects – At the study participated 28 healthy volunteers. Results – The H1max/Mmax × 100 values obtained during handgrip (37.5±10.1) were significantly higher than those obtained at rest (27.1±7.4). The H2max/H1max × 100-va­lues obtained at paired stimulation were significantly higher during handgrip than at rest, while no significant diffe­rence was found between the H2/H1max × 100-values obtained during handgrip and at rest respectively. Discussion – The H2max/H1max is determined by both the excitability of the motoneurons and the recurrent inhibition elicited by the conditioning stimulus, while H2/H1max indicates only the level of recurrent inhibition. According to our results the Renshaw cells retain their inhibitory effect on the soleus alpha motoneurons during remote muscle contraction. Conclusion – Soleus H reflex enhancement during Jendrassik maneuver is not due to decrease of recurrent inhibition. ]

Clinical Neuroscience

MAY 30, 2020

Autonomic nervous system may be affected after carpal tunnel syndrome surgery: A possible mechanism for persistence of symptoms after surgery

ONDER Burcu, KELES Yavuz Betul

After carpal tunnel surgery, some patients report complaints such as edema, pain, and numbness. Purpose – The aim of this study was to evaluate autonomic nervous system function in patients with a history of carpal tunnel surgery using sympathetic skin response (SSR). Thirty three patients (55 ±10 years old) with a history of unilateral operation for carpal tunnel syndrome were included in the study. The SSR test was performed for both hands. Both upper extremities median and ulnar nerve conduction results were recorded. A reduced amplitude (p=0.006) and delayed latency (p<0.0001) were detected in the SSR test on the operated side compared to contralateral side. There was no correlation between SSR and carpal tunnel syndrome severity. Although complex regional pain syndrome does not develop in patients after carpal tunnel surgery, some of the complaints may be caused by effects on the autonomic nervous system.

Clinical Neuroscience

MARCH 30, 2016

Cerebral amyloid angiopathy related inflammation: is susceptibility weighted imaging the clue for diagnosis?


Background - Cerebral amyloid angiopathy-related inflammation (CAA-ri) is characterized by various neurological symptoms such as gradually developing confusion, progressive cognitive decline, seizure or headaches; T2 hyperintensities on magnetic resonance imaging (MRI); and neuropathological evidence of cerebral amyloid angiopathy (CAA) and associated vascular or perivascular inflammation. Although histological confirmation is necessary for accurate diagnosis, in case of typical clinical features and neuroimaging, the diagnosis can be established without biopsy. Case summary - We present the case of a 57-year-old man with a history of hypertension who presented to the emer¬gency department 3-week history of progressive headache and a gradually developing altered mental status. On examination, he was found to have left sided weakness and decreased pscyhomotility. Routine clinical work-up (lab investigations, CT, cerebrospinal fluid analysis) did not show obvious diagnosis, so we performed an MRI. It raised the suspicion of CAA-ri which diagnosis was verified by neuroradiological evaluation. High dose steroid treatment was initiated. The patient rapidly responded to treatment, his focal neurological signs resolved. Control MRI after 1.5 months showed multiple haemorrhagic laesions in the field of previous inflammation which posteriorly supported the previous supposed work-diagnosis. Conclusions - Although histopathology is the gold standard for the diagnosis of cerebral amyloid angiopathy, the typical clinical presentation, good response to steroids and accurate neuroradiological criteria make biopsy unnecessary to diagnose CAA-ri.