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  1. Article: Identification of a novel

    Kolkova, Zuzana / Durdik, Peter / Holubekova, Veronika / Durdikova, Anna / Jesenak, Milos / Banovcin, Peter

    Frontiers in pediatrics

    2024  Volume 12, Page(s) 1339664

    Abstract: Background: The mutations in the : Methods: Two young brothers from a non-consanguineous Slovak family with diagnosed retinal dystrophy and recurrent respiratory infections were examined. Suspected PCD was diagnosed based on a PICADAR questionnaire, ... ...

    Abstract Background: The mutations in the
    Methods: Two young brothers from a non-consanguineous Slovak family with diagnosed retinal dystrophy and recurrent respiratory infections were examined. Suspected PCD was diagnosed based on a PICADAR questionnaire, nasal nitric oxide analysis, transmission electron microscopy, high-speed video microscopy analysis, and genetic testing.
    Results: We identified a novel frameshift
    Conclusion: The identified novel pathogenic mutation in the
    Language English
    Publishing date 2024-01-25
    Publishing country Switzerland
    Document type Case Reports
    ZDB-ID 2711999-3
    ISSN 2296-2360
    ISSN 2296-2360
    DOI 10.3389/fped.2024.1339664
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: The effect of adenoidectomy on transnasal airflow in children with hypertrophy of adenoid tissue.

    Sojak, Jan / Durdik, Peter / Pecova, Renata

    African journal of paediatric surgery : AJPS

    2020  Volume 15, Issue 3, Page(s) 126–130

    Abstract: Background: The aim of this study was to clarify changes of transnasal airflow resulting from adenoidectomy and to assess the effect of surgery depending on adenoid hypertrophy (AH) obstruction grade.: Materials and methods: Altogether fifty children ...

    Abstract Background: The aim of this study was to clarify changes of transnasal airflow resulting from adenoidectomy and to assess the effect of surgery depending on adenoid hypertrophy (AH) obstruction grade.
    Materials and methods: Altogether fifty children having symptoms of nasal obstruction and adenoids were submitted to a rhinomanometric assessment before and after adenoidectomy. At the same time, using the nasal fiberoptic endoscopy, the grade of AH obstruction was determined, according to which the children were divided into four classes. We assessed the change of total transnasal inspiratory airflow and total nasal resistance due to adenoidectomy.
    Results: Values of transnasal airflow and nasal resistance measured in the study group of fifty children were preoperatively 262 mL/s and 0.565 kPa/L/s; postoperatively 288 mL/s and 0.52 kPa/L/s. We have noticed statistically significant increase of the airflow (P = 0.015); however, decrease of the resistance (P = 0.054) was not significant. In the group of children suffering from the 1
    Conclusions: Adenoidectomy significantly increased the airflow; however, we observed the different effect in the group of children with the 1
    Language English
    Publishing date 2020-08-08
    Publishing country India
    Document type Journal Article
    ZDB-ID 2392865-7
    ISSN 0974-5998 ; 0974-5998
    ISSN (online) 0974-5998
    ISSN 0974-5998
    DOI 10.4103/ajps.AJPS_135_15
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  3. Article ; Online: Young and exhausted.

    Oleksak, Filip / Durdik, Peter / Jakusova, Lubica / Turcan, Tomas / Banovcin, Peter

    Advances in respiratory medicine

    2021  Volume 89, Issue 1, Page(s) 92–95

    Abstract: Chronic Fatigue Syndrome (CFS), also known as myalgic encephalomyelitis (ME), is a complicated disease characterized by extreme fatigue of at least six months duration. It is necessary to rule out the organic cause of CFS in the pediatric patient in ... ...

    Abstract Chronic Fatigue Syndrome (CFS), also known as myalgic encephalomyelitis (ME), is a complicated disease characterized by extreme fatigue of at least six months duration. It is necessary to rule out the organic cause of CFS in the pediatric patient in order not to overlook the preventable or the treatable condition. In our case report we present a case of a patient with a surprising origin OF CFS/ME diagnosed by cardiopulmonary exercise testing.
    MeSH term(s) Adolescent ; Fatigue Syndrome, Chronic/diagnosis ; Fatigue Syndrome, Chronic/therapy ; Female ; Humans
    Language English
    Publishing date 2021-02-09
    Publishing country Poland
    Document type Case Reports ; Journal Article
    ZDB-ID 2893877-X
    ISSN 2543-6031 ; 2451-4934
    ISSN (online) 2543-6031
    ISSN 2451-4934
    DOI 10.5603/ARM.a2020.0196
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  4. Article: Psychotic Episode and Schizophrenia in Slovakian Narcolepsy Database.

    Feketeová, Eva / Dragašek, Jozef / Klobučníková, Katarína / Ďurdík, Peter / Čarnakovič, Simona / Slavkovská, Miriam / Chylová, Martina

    Brain sciences

    2022  Volume 13, Issue 1

    Abstract: Narcolepsy type 1 (NT1), a central disorder of hypersomnolence, is associated with mood, anxiety or hyperactivity mental disorders. Association with psychotic episode or schizophrenia is rare and could be the source of diagnostic and therapeutic ... ...

    Abstract Narcolepsy type 1 (NT1), a central disorder of hypersomnolence, is associated with mood, anxiety or hyperactivity mental disorders. Association with psychotic episode or schizophrenia is rare and could be the source of diagnostic and therapeutic difficulties. Their frequency in the national narcolepsy database has not been systematically studied. The aim of the presented study was to calculate the frequency of NT1 patients diagnosed with psychosis and/or schizophrenia, to identify clinical characteristics of these cases, and to look for narcoleptic and psychotic symptoms during re-evaluation years later. We identified three (4%) cases diagnosed with a psychotic episode in the course of NT1. They were diagnosed with NT1 by age ≤18 years. In the re-evaluation (mean follow-up 9.8 years), we identified one case with a dual diagnosis of NT1 and schizophrenia; two cases were diagnosed with a solitary psychotic episode in the course of NT1. NT1 patients diagnosed in the age ≤18 years are at higher risk of psychotic episode, and this may be related to higher vulnerability during the ongoing neurodevelopmental period. Comorbid schizophrenia with NT1 in the Slovakian Narcolepsy Database was within the prevalence expected in the general population. The solitary psychotic episode in the course of NT1 did not reduce the possibility of subsequent symptomatic treatment afterwards.
    Language English
    Publishing date 2022-12-24
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2651993-8
    ISSN 2076-3425
    ISSN 2076-3425
    DOI 10.3390/brainsci13010043
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  5. Article ; Online: Polysomnographic profile in children diagnosed with celiac disease before starting on a gluten free diet.

    Suroviaková, Stanislava / Ďurdíková, Anna / Ďurdík, Peter / Havličeková, Zuzana / Michnová, Zuzana / Šutvajová, Dominika / Remeň, Lukáš / Kolková, Zuzana / Vojtková, Jarmila / Bánovčin, Peter

    Sleep medicine

    2023  Volume 112, Page(s) 301–307

    Abstract: Study aims: The study assessed the presence of sleep abnormalities in children who had recently been diagnosed with celiac disease (CD) and not started a gluten free diet (GFD). The children's polysomnographic profiles were also characterized and ... ...

    Abstract Study aims: The study assessed the presence of sleep abnormalities in children who had recently been diagnosed with celiac disease (CD) and not started a gluten free diet (GFD). The children's polysomnographic profiles were also characterized and further compared with healthy children of the same age.
    Methods: This prospective cross-sectional study involved 46 pediatric subjects (aged 1-19 years) who had recently been diagnosed with CD and not started a GFD. The control group consisted of 32 healthy children (aged 2-17 years). All children underwent anthropometric measurement, laboratory testing and standard overnight observation with in-laboratory video-PSG. The study and control group were divided into subgroups according to the subjects' median ages (8.1 years): celiac children aged less than 8.1 years (n = 23) and more than 8.1 years (n = 23), healthy children less aged than 8.1 years (n = 16) and more than 8.1 years (n = 16).
    Results: No significant differences in the basic demographic and anthropometric parameters between the celiac and control group were observed. Significantly prolonged sleep latency (SOL) was evident in the celiac subjects (21.89 ± 20.77 min. vs. 10.99 ± 7.94 min, p = 0.02), with a probability of prolonged SOL of 4.23-fold greater (OR = 4.23; 95 % CI 1.1-16.22) than the healthy controls, especially in the subgroup of older celiac patients. No significant differences in the sleep period time (SPT), total sleep time (TST), wake during sleep (WASO), sleep efficiency (SE) and sleep stage distribution and cyclization were found. The respiratory rates during sleep indicated a significantly greater incidence of the central apnea-hypopnea index (CAHI) (0.54 ± 0.78 vs. 0.18 ± 0.24, p = 0.03) with a 3.16-fold greater probability of pathological CAHI (OR = 3.16; 95 % CI 1.02-9.77) than the control group. An increased incidence of CSA in the subgroup of younger celiac patients compared to younger healthy controls was especially evident.
    Conclusions: The findings of our study suggest a difference in sleep architecture and an increased incidence of CSA in children with untreated CD, but additional research is required to verify the results.
    MeSH term(s) Child ; Humans ; Celiac Disease ; Diet, Gluten-Free ; Prospective Studies ; Cross-Sectional Studies ; Sleep
    Language English
    Publishing date 2023-10-21
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2012041-2
    ISSN 1878-5506 ; 1389-9457
    ISSN (online) 1878-5506
    ISSN 1389-9457
    DOI 10.1016/j.sleep.2023.10.007
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  6. Article ; Online: Dysfunctional mucociliary clearance in asthma and airway remodeling - New insights into an old topic.

    Jesenak, Milos / Durdik, Peter / Oppova, Dasa / Franova, Sona / Diamant, Zuzana / Golebski, Kornel / Banovcin, Peter / Vojtkova, Jarmila / Novakova, Elena

    Respiratory medicine

    2023  Volume 218, Page(s) 107372

    Abstract: Bronchial asthma is a heterogeneous respiratory condition characterized by chronic airway inflammation, airway hyperresponsiveness and airway structural changes (known as remodeling). The clinical symptoms can be evoked by (non)specific triggers, and ... ...

    Abstract Bronchial asthma is a heterogeneous respiratory condition characterized by chronic airway inflammation, airway hyperresponsiveness and airway structural changes (known as remodeling). The clinical symptoms can be evoked by (non)specific triggers, and their intensity varies over time. In the past, treatment was mainly focusing on symptoms' alleviation; in contrast modern treatment strategies target the underlying inflammation, even during asymptomatic periods. Components of airway remodeling include epithelial cell shedding and dysfunction, goblet cell hyperplasia, subepithelial matrix protein deposition, fibrosis, neoangiogenesis, airway smooth muscle cell hypertrophy and hyperplasia. Among the other important, and frequently forgotten aspects of airway remodeling, also loss of epithelial barrier integrity, immune defects in anti-infectious defence and mucociliary clearance (MCC) dysfunction should be pointed out. Mucociliary clearance represents one of the most important defence airway mechanisms. Several studies in asthmatics demonstrated various dysfunctions in MCC - e.g., ciliated cells displaying intracellular disorientation, abnormal cilia and cytoplasmic blebs. Moreover, excessive mucus production and persistent cough are one of the well-recognized features of severe asthma and are also associated with defects in MCC. Damaged airway epithelium and impaired function of the ciliary cells leads to MCC dysfunction resulting in higher susceptibility to infection and inflammation. Therefore, new strategies aimed on restoring the remodeling changes and MCC dysfunction could present a new therapeutic approach for the management of asthma and other chronic respiratory diseases.
    MeSH term(s) Humans ; Airway Remodeling ; Mucociliary Clearance/physiology ; Hyperplasia ; Asthma/drug therapy ; Inflammation
    Language English
    Publishing date 2023-07-27
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1003348-8
    ISSN 1532-3064 ; 0954-6111
    ISSN (online) 1532-3064
    ISSN 0954-6111
    DOI 10.1016/j.rmed.2023.107372
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  7. Article ; Online: Reference Values for Cardiopulmonary Exercise Testing in Young Male Slovak Athletes.

    Olekšák, Filip / Dvoran, Pavol / Jakušová, Ľubica / Ďurdík, Peter / Igaz, Matúš / Bánovčin, Peter

    Acta medica (Hradec Kralove)

    2021  Volume 64, Issue 2, Page(s) 119–124

    Abstract: Background: The reference values of young athletes for cardiopulmonary exercise testing are lacking. Expert opinions encourage production of local values specific for certain population.: Patients and methods: The study population consisted of 136 ... ...

    Abstract Background: The reference values of young athletes for cardiopulmonary exercise testing are lacking. Expert opinions encourage production of local values specific for certain population.
    Patients and methods: The study population consisted of 136 healthy male caucasian athletic children and adolescents coming from one specific football school in northern Slovakia. Exercise testing with continuous electrocardiography was performed, and ventilatory parameters, oxygen uptake (VO2), and carbon dioxide (CO2) production were measured continuously with a respiratory gas analysis system.
    Results: Peak VO2max/kg was changing very little across the childhood, whereas the peak work rate, heart rate and O2Pulse were. Linear regression analysis showed a significant effect of age on VE/VCO2.
    Conclusion: This work provides a reference values for the most important cardiopulmonary variables that can be obtained during cardiopulmonary exercise testing in athletic children.
    MeSH term(s) Adolescent ; Athletes ; Carbon Dioxide/metabolism ; Child ; Electrocardiography ; Exercise Test ; Humans ; Male ; Oxygen/metabolism ; Reference Values ; Respiratory Function Tests ; Slovakia/epidemiology
    Chemical Substances Carbon Dioxide (142M471B3J) ; Oxygen (S88TT14065)
    Language English
    Publishing date 2021-07-31
    Publishing country Czech Republic
    Document type Journal Article
    ZDB-ID 1360995-6
    ISSN 1805-9694 ; 1211-4286
    ISSN (online) 1805-9694
    ISSN 1211-4286
    DOI 10.14712/18059694.2021.20
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  8. Article: Changes in Cough Reflex Sensitivity in Children After Removal of Hypertrophied Adenoid Tissue.

    Sojak, Jan / Durdik, Peter / Omar Mohamedova, Eva / Grendar, Marian / Lucanska, Miroslava / Pec, Martin Jozef / Tatar, Milos / Pecova, Renata

    Journal of asthma and allergy

    2022  Volume 15, Page(s) 517–524

    Abstract: Purpose: The co-occurrence of adenoids and chronic cough is common in children. The goal of this research was to specify changes in cough reflex sensitivity as a result of adenoid tissue removal.: Patients and methods: The sample group consisted of ... ...

    Abstract Purpose: The co-occurrence of adenoids and chronic cough is common in children. The goal of this research was to specify changes in cough reflex sensitivity as a result of adenoid tissue removal.
    Patients and methods: The sample group consisted of 17 children (six boys and 11 girls, aged 4-12 years, mean age 6.24 years), all of them possessing symptoms of chronic cough and adenoids, confirmed by nasal fiberoptic endoscopy. This sample group underwent cough reflex sensitivity assessment, which took place both prior to and after endoscopic adenoidectomy. The definition of the cough reflex sensitivity is the lowest capsaicin concentration that caused two (C2) or five (C5) coughs. Capsaicin aerosol in ascending concentrations (from 0.61 to 1250 µmol/L) was inhaled by a single-breath method (KoKo DigiDoser), with the addition of an inspiratory flow regulator valve (RIFR).
    Results: Concentrations of capsaicin causing two (C2) and five coughs (C5) were reported. Cough sensitivity (geometric mean with 95% CI) for C2 was 31.86 (12.98-78.18) µmol/L preoperatively and 11.97 (6.16-23.26) µmol/L postoperatively (
    Conclusion: In our study, adenoidectomy significantly increased cough reflex sensitivity in non-atopic children suffering from chronic cough.
    Language English
    Publishing date 2022-04-19
    Publishing country New Zealand
    Document type Journal Article
    ZDB-ID 2494877-9
    ISSN 1178-6965
    ISSN 1178-6965
    DOI 10.2147/JAA.S347355
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  9. Article ; Online: Ciliary beat frequency in children with adenoid hypertrophy.

    Marusiakova, Lucia / Durdik, Peter / Jesenak, Milos / Bugova, Gabriela / Kvassayova, Julia / Oppova, Dasa / Banovcin, Peter

    Pediatric pulmonology

    2020  Volume 55, Issue 3, Page(s) 666–673

    Abstract: Background: Children with adenoid hypertrophy (AH) have impaired respiratory system defense mechanisms, such as mucociliary clearance. We hypothesized that AH negatively affects one of the most important aspects of mucociliary clearance-ciliary beat ... ...

    Abstract Background: Children with adenoid hypertrophy (AH) have impaired respiratory system defense mechanisms, such as mucociliary clearance. We hypothesized that AH negatively affects one of the most important aspects of mucociliary clearance-ciliary beat frequency (CBF) and that adenoidectomy could potentially restore this essential defence mechanism of the airways. This study evaluated the influence of AH and endoscopic adenoidectomy on the CBF of the nasal respiratory epithelium in children.
    Methods: This prospective study included 64 children with confirmed AH aged 3 to 18 years and 43 age- and sex-matched healthy controls. Nasal CBF was analyzed using a digital high-speed video microscope and the software application Ciliary Analysis (NI LabVIEW). The preoperative adenoid size was assessed according to Cassano. Clinical symptoms of chronic rhinosinusitis were evaluated using the SNOT-20 questionnaire.
    Results: Children with AH had a median CBF of 5.35 ± 1.06 Hz. Six months after surgery, the median CBF was significantly higher (6.48 ± 0.88 Hz; P < .001) and reached the values of healthy children (6.37 ± 0.71 Hz; P = .512). The size of the adenoid tissue did not correlate with the CBF. No influence of age or gender on the CBF was found. After adenoidectomy, a significant reduction of the mean total SNOT-20 score was recorded (P < .01).
    Conclusion: Children with clinically symptomatic AH have impaired mucociliary clearance due to decreased nasal CBF. Removal of hypertrophic adenoid tissue normalizes the CBF and reduces the presence of clinical symptoms of rhinosinusitis.
    MeSH term(s) Adenoidectomy ; Adenoids/pathology ; Adenoids/surgery ; Adolescent ; Child ; Child, Preschool ; Cilia/physiology ; Endoscopy ; Female ; Humans ; Hypertrophy/physiopathology ; Hypertrophy/surgery ; Male ; Microscopy, Video ; Mucociliary Clearance ; Nasal Mucosa/physiopathology ; Nasal Mucosa/surgery ; Prospective Studies ; Software
    Language English
    Publishing date 2020-01-09
    Publishing country United States
    Document type Controlled Clinical Trial ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 632784-9
    ISSN 1099-0496 ; 8755-6863
    ISSN (online) 1099-0496
    ISSN 8755-6863
    DOI 10.1002/ppul.24622
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  10. Article ; Online: Narcolepsy in Slovakia - Epidemiology, clinical and polysomnographic features, comorbid diagnoses: a case-control study.

    Feketeova, Eva / Tormasiova, Maria / Klobučníková, Katarina / Durdik, Peter / Jarcuskova, Dominika / Benca, Miroslav / Vitkova, Marianna

    Sleep medicine

    2019  Volume 67, Page(s) 15–22

    Abstract: Objective: An increase in the incidence of narcolepsy after the pandemic influenza with the H1N1 vaccination in 2009 resulted in an interest in narcolepsy epidemiology. The aim of the study was to examine the incidence and prevalence rates of narcolepsy ...

    Abstract Objective: An increase in the incidence of narcolepsy after the pandemic influenza with the H1N1 vaccination in 2009 resulted in an interest in narcolepsy epidemiology. The aim of the study was to examine the incidence and prevalence rates of narcolepsy and to describe the associated characteristics in Slovakia.
    Methods: Epidemiology data were calculated for each year from 2000 to 2017 based on records found in specialized centres. In sum, 61 narcoleptic patients were diagnosed, of which 51 (84%) had narcolepsy type 1 (NT1). Clinical data and results of polysomnography (PSG), Human Leukocyte Antigen (HLA)-typing, hypocretin (HCRT)-1 levels and body mass index (BMI) were summarised and evaluated for NT1 and narcolepsy type2 (NT2). Later, 244 sex and age matched controls were chosen to evaluate the comorbid diagnoses.
    Results: The prevalence of narcolepsy in 2017 in Slovakia was 10.47 (CI 95% 8.26-14) cases/million inhabitants, and the mean incidence rate (2000-2017) was 0.57 (CI 95% 0.4-0.74) cases/million inhabitants. Narcoleptic patients were comorbid with arterial hypertension (17%), ischemic heart disease (8%), dyslipidaemia (18%), diabetes mellitus type 2 (10%), cardiac arrhythmia/atrial fibrillation (5%), autoimmune disorders (20%), allergy (11%), malignancy (3%), headache (15%) and mental disorders (20%). Patients with narcolepsy showed double the excess prevalence in mental disorders (OR 2.15, p < 0.05), and dyslipidaemia (OR 2.22, p < 0.05). The presence of autoimmune disorders and allergy showed a mild increase in the narcolepsy group (OR 1.46, resp. 1.63). Hashimoto thyroiditis (HT) was the most frequent autoimmune disorder.
    Conclusions: Narcolepsy is a rare disorder in Slovakia. From the phenotype, genetic characteristics and comorbidities the disorder does not vary from other European countries.
    MeSH term(s) Adult ; Body Mass Index ; Case-Control Studies ; Comorbidity ; Diabetes Mellitus, Type 2/diagnosis ; Female ; Heart Diseases/diagnosis ; Humans ; Male ; Narcolepsy/diagnosis ; Narcolepsy/epidemiology ; Orexins ; Polysomnography ; Slovakia/epidemiology ; Young Adult
    Chemical Substances Orexins
    Language English
    Publishing date 2019-11-11
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2012041-2
    ISSN 1878-5506 ; 1389-9457
    ISSN (online) 1878-5506
    ISSN 1389-9457
    DOI 10.1016/j.sleep.2019.10.012
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