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Clinical Neuroscience

JANUARY 30, 2021

[The first Hungarian patient with Guillain-Barre syndrome after COVID-19]


[Guillain-Barré syndrome (GBS) is a sporadic, relatively rare disease. In serious cases, it can lead to respiratory failure and death. The correlation between SARS-CoV-2 and the risk of GBS is not yet known. COVID-19-associated prolonged pulmonary complications could be worsened by the potential airway interference caused by GBS. The literature is inconsistent whether SARS-CoV-2 virus has direct or indirect effect on the onset of GBS. The authors describe the medical history of the first published GBS patient in Hungary with a preceding confirmed COVID-19 infection. The trigger role of COVID-19 infection is assumed because of the subsequent development of GBS after COVID-19 infection. So far none of the patients in the literature (including this patient) had positive PCR of SARS-CoV-2 virus from the cerebrospinal fluid.]

Clinical Neuroscience

JANUARY 30, 2021

[Cases of inborn errors of metabolism diagnosed in children with autism ]

ÇAKAR Emel Nafiye, YILMAZBAŞ Pınar

[Autism spectrum disorder is a neurodevelopmental disorder with a heterogeneous presentation, the etiology of which is not clearly elucidated. In recent years, comorbidity has become more evident with the increase in the frequency of autism and diagnostic possibilities of inborn errors of metabolism. One hundred and seventy-nine patients with diagnosis of autism spectrum disorder who presented to the Pediatric Metabolism outpatient clinic between 01/September/2018-29/February/2020 constituted the study population. The personal information, routine and specific metabolic tests of the patients were analyzed retrospectively. Out of the 3261 patients who presented to our outpatient clinic, 179 (5.48%) were diagnosed with autism spectrum disorder and were included in the study. As a result of specific metabolic examinations performed, 6 (3.3%) patients were diagnosed with inborn errors of metabolism. Two of our patients were diagnosed with classical phenylketonuria, two with classical homocystinuria, one with mucopolysaccharidosis type 3D (Sanfilippo syndrome) and one with 3-methylchrotonyl Co-A carboxylase deficiency. Inborn errors of metabolism may rarely present with autism spectrum disorder symptoms. Careful evaluation of the history, physical examination and additional findings in patients diagnosed with autism spectrum disorder will guide the clinician in the decision-making process and chose the appropriate specific metabolic investigation. An underlying inborn errors of metabolism may be a treatable cause of autism.]

Journal of Nursing Theory and Practice

FEBRUARY 28, 2020

[Complication of the Metabolic Syndrome in Women with Polycystic Ovary Syndrome]

KOMLÓSI Kálmánné, KISS Sarolta, FERENCZY Mónika, MÁTÉ-PÓHR Kitti, PAKAI Annamária

[In our research we compared whether pregnant women with polycystic ovary syndrome or the mothers who were healthy through pregnancy has a higher risk to develop high BMI, metabolic syndrome, preeclampsia, polyhydramnion and macrosomia. Our research is a retrospective, cross-sectional study. In the random sampling within the target group, the target group was diagnosed with PCOS (n=50) and the control group was mothers who had undergone uninterrupted pregnancy (n=50). The exclusion criterion is the coexistence of other endocrine disease that may affect the parameters under consideration, in addition to the control group the diagnosis of PCOS. With IBM SPSS for Windows 22.0, we applied two-sample T-test and Khi2 test (p<0.05). The BMI values ​​measured in the PCOS study group are higher than in the control group (p<0,05). Pregnant women with PCOS has a higher risk of developing high blood pressure, and high cholesterol (p<0,05). The difference between the two groups can not be considered significant for the development of proteinuria and oedema. Emphasis should be placed on PCOS gravid care, early detection of metabolic disturbances, accurate documentation, and elimination of complications and illnesses associated with the disease.]

Clinical Oncology

APRIL 30, 2020

[Coronavirus pandemic – new challenges in oncotherapy]


[This review outlines some of the basic observations related to coronaviruses infecting animals and describes – in a nutshell – the characteristics of human coronaviruses causing mild or severe respiratory diseases in infected individuals. A special attention is given to SARS-CoV-2, the causative agent of the current coronavirus disease (Covid-19) pandemic, and to the pathomechanism of severe acute respiratory syndrome (SARS) which is also accompanied with multiorgan failure in a subset of infected patients. Recently discovered unique molecular features of SARS-CoV-2 are described as well. These molecular cues may affect human to human virus transmission whereas they are absent, remarkably, from the other lung-targeting highly pathogenic human coronaviruses (SARS-CoV-1 and MERS-CoV) which did not spread all over the world. The possibilities of active immunization to prevent SARS-CoV-2 infection and the development of selective small molecule inhibitors curbing the replication of the virus are also touched upon. The review closes with a few remarks regarding the Hungarian and international recommendations concerning the treatment of SARSCoV- 2 infected cancer patients.]

Clinical Oncology

APRIL 30, 2020

[Biological clock and cancer]


[In the present paper, we are giving a review about the circadian rhythm of the biological rhythm, its regulation and relation to tumorigenesis. The circadian rhythm is an approximately 24-hour cycle in biochemical, physiological processes in organisms from unicellular to vertebrates. This biological rhythm is generated by the synchronization of our endogenous clocks and the light as the main “Zeitgeber”. The nucleus suprachiasmaticus (SCN) of the hypothalamus is the region, which is considered to be the circadian “main clock” of the organism and is responsible for coordinating peripheral clocks in different organ systems. At the cellular level, the regulation of the circadian rhythm is basically provided by the so-called “circadian locomotor output cycles kaput” the CLOCK genes. The discovery of those cellular mechanisms was awarded with Nobel Prize in 2017. The CLOCK genes, acting on other effector genes, regulate diurnal rhythm of protein synthesis. More and more data are available, which suggest that there is an association between circadian genes and tumor development. Furthermore, many studies show a link between the shift work and the development of breast and prostate cancer and between mutations in some circadian genes and development of carcinomas. More data suggest a relationship between tumor metabolism and CLOCK genes and their regulations. Based on all these data, the circadian rhythm, so the time of day, may need to be taken into account during cancer therapy.]

Clinical Neuroscience

NOVEMBER 30, 2020

Positive airway pressure normalizes glucose metabolism in obstructive sleep apnea independent of diabetes and obesity

KABELOĞLU Vasfiye, SENEL Benbir Gulçin, KARADENIZ Derya

The relationship among obstructive sleep apnea syndrome (OSAS), type 2 diabetes mellitus (DM2) and obesity is very complex and multi-directional. Obesity and increased visceral fat are important perpetuating factors for DM2 in patients with OSAS. On the other hand, OSAS itself leads to obesity by causing both leptin and insulin resistance as a consequence of activation of the sympathetic nervous system. Risk for developing DM2 further increases in patients with OSAS and obesity. Data regarding effects of positive airway pressure (PAP) therapy, gold standard treatment for OSAS, on glycemic control were inconsistent due to variability in duration of and adherence to PAP therapy. In our cohort study we investigated effects of PAP treatment on glucose metabolism in normal-weighted non-diabetic OSAS patients, in obese non-diabetic OSAS patients, and in OSAS patients with DM2. We prospectively analyzed 67 patients diagnosed with OSAS and documented to be effectively treated with PAP therapy for three months. Apnea-hypopnea index was highest in the diabetic group, being significantly higher than in the normal-weighted group (p=0.021). Mean HOMA values were significantly higher in obese (p=0.002) and diabetic group (p=0.001) than normal-weighted group; the differences were still significant after PAP therapy. HbA1c levels were significantly higher in diabetic group compared to those in normal-weighted (p=0.012) and obese (p=0.001) groups. After PAP treatment, decrease in HbA1c levels were significant in normal-weighted (p=0.008), obese (p=0.034), and diabetic (p=0.011) groups. There was no correlation with the change in HbA1c levels and age (p=0.212), BMI (p=0.322), AHI (p=0.098) or oxygen levels (p=0.122). Our study showed that treatment of OSAS by PAP therapy offers beneficial effect on glucose metabolism, not only in diabetic patients, but also in obese and normal-weighted OSAS patients. Although data regarding overall effects of PAP therapy on glycemic control present contradictory results in the literature, it should be emphasized that duration and adherence to PAP therapy were main determinants for beneficial outcome of treatment.

Clinical Oncology

AUGUST 30, 2019

[Role of calcium metabolism in malignant diseases]


[Calcium plays a key role in a wide range of biologic functions. It is involved in skeletal mineralization, muscle functions, nerve transmission, and hormonal secretion and modulate various cellular functions too. Lines of research, on possible association of calcium metabolism regulation with tumorigenesis have been extensively studied in the recent decades. Implying disruptions and/or alterations of known regulatory and molecular pathways can lead to severe, sometimes life-threatening complications. The shift in physiological regulation and pathological factors also affect bone metastases and hypercalcaemia in cancer patients. For this reason, it is important to know about the changes in calcium metabolism and its treatment options in cancerous diseases.]

Hypertension and nephrology

SEPTEMBER 30, 2020

[Post-career development of cardiometabolic changes and hypertension in competitive athletes]


[Regular physical activity is essential in delaying the aging processes (e.g. arterial remodelling – stiffening, metabolism, bodyweight), the beneficial effects of competitive sports – especially strength sports – according to the recent data of the literature are questionable. The beneficial effects of physical activity on the cardiovascular (CV) system are well known, however less is known regarding the delayed impacts of high intensity competitive sports on the CV system, especially after the sport career is over. This review summarizes the effects of active competitive sport and the post-career period on the cardiometabolic system with special attention to the systemic blood pressure and the development of metabolic syndrome. After sport career, the welldeveloped high performance cardiovascular- and metabolic system suddenly is much less used, but still supported by sport-level diet. It is well known that hypertension is a significant pathogenic factor in the development of cardiovascular diseases, characterized – among others – by reduced elasticity of large- and medium- sized vessels thereby importantly contributing to the development of systolic hypertension. Inflammation and thrombus formation both play an important role in the development of vascular injury and atherosclerosis. The increased tone of microvessels can impair the blood supply of certain organs, including the coronary circulation. It has been ample shown, that regular non-competitive, aerobic exercise activities are important factors in preventing hypertension. Such pathological changes become more evident after the development of post-career obesity, as well as the development of hypertension due to the activation of the renin-angiotensin system through sodium retention and other metabolic changes (increased glucose tolerance, insulin resistance, type II diabetes mellitus). It has been ample shown, that regular non-competitive, dynamic aerobic exercise activities are important factors in preventing hypertension. The frequency, intensity, type, and time (FITT) principle of exercise prescription is the first and common therapeutic approach, which represents the translation of cardiovascular basic science research results into hypertension treatment, thus can provide a personalized physical activity program/therapy according to medical needs not just for the post-career sportspersons, but the wide range of patients.]

Clinical Neuroscience

SEPTEMBER 30, 2020

Late simultaneous carcinomatous meningitis, temporal bone infiltrating macro-metastasis and disseminated multi-organ micro-metastases presenting with mono-symptomatic vertigo – a clinico-pathological case reporT

JARABIN András János, KLIVÉNYI Péter, TISZLAVICZ László, MOLNÁR Anna Fiona, GION Katalin, FÖLDESI Imre, KISS Geza Jozsef, ROVÓ László, BELLA Zsolt

Although vertigo is one of the most common complaints, intracranial malignant tumors rarely cause sudden asymmetry between the tone of the vestibular peripheries masquerading as a peripheral-like disorder. Here we report a case of simultaneous temporal bone infiltrating macro-metastasis and disseminated multi-organ micro-metastases presenting as acute unilateral vestibular syndrome, due to the reawakening of a primary gastric signet ring cell carcinoma. Purpose – Our objective was to identify those pathophysiological steps that may explain the complex process of tumor reawakening, dissemination. The possible causes of vestibular asymmetry were also traced. A 56-year-old male patient’s interdisciplinary medical data had been retrospectively analyzed. Original clinical and pathological results have been collected and thoroughly reevaluated, then new histological staining and immunohistochemistry methods have been added to the diagnostic pool. During the autopsy the cerebrum and cerebellum was edematous. The apex of the left petrous bone was infiltrated and destructed by a tumor mass of 2x2 cm in size. Histological reexamination of the original gastric resection specimen slides revealed focal submucosal tumorous infiltration with a vascular invasion. By immunohistochemistry mainly single infiltrating tumor cells were observed with Cytokeratin 7 and Vimentin positivity and partial loss of E-cadherin staining. The subsequent histological examination of necropsy tissue specimens confirmed the disseminated, multi-organ microscopic tumorous invasion. Discussion – It has been recently reported that the expression of Vimentin and the loss of E-cadherin is significantly associated with advanced stage, lymph node metastasis, vascular and neural invasion and undifferentiated type with p<0.05 significance. As our patient was middle aged and had no immune-deficiency, the promoting factor of the reawakening of the primary GC malignant disease after a 9-year-long period of dormancy remained undiscovered. The organ-specific tropism explained by the “seed and soil” theory was unexpected, due to rare occurrence of gastric cancer to metastasize in the meninges given that only a minority of these cells would be capable of crossing the blood brain barrier. Patients with past malignancies and new onset of neurological symptoms should alert the physician to central nervous system involvement, and the appropriate, targeted diagnostic and therapeutic work-up should be established immediately. Targeted staining with specific antibodies is recommended. Recent studies on cell lines indicate that metformin strongly inhibits epithelial-mesenchymal transition of gastric cancer cells. Therefore, further studies need to be performed on cases positive for epithelial-mesenchymal transition.

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.