Optische Erfassung und numerische Analyse von Kontakten in der dynamischen Okklusion mittels digitalisierter Situationsmodelle:Einflussgrößen bei der numerischen Kontaktbestimmung am Beispiel des ATOS-3D-Oberflächenerfassungssystems und des String-Condylocomp LR3

In dieser Arbeit wird ein Verfahren zur numerischen Analyse von Okklusionskontakten anhand optisch vermessener Kiefermodelle vorgestellt. Die Grundlage bilden mittels der Streifenprojektionstechnik dreidimensional erfasste, digitalisierte und schädelorientierte Situationsmodelle sowie mit der elektronischen Achsiografie aufgezeichnete Bewegungsbahnen der Kondylen. Neben der Untersuchung zu den bei der Digitalisierung von Situationsmodellen auftretenden Messunsicherheiten werden die entwickelten Programme zur Darstellung der Okklusion und zur Berechnung von Öffnungswinkelkurven vorgestellt. Der Vergleich der Okklusion an einem mechanischen Artikulator und der des virtuellen Artikulators zeigt zum Teil gute Übereinstimmungen. Die Abweichungen lassen sich zum einen auf die ungenaue Wiedergabe der Unterkieferbewegungen in einem teiladjustierbaren mechanischen Artikulator zum anderen auf die zuvor bestimmten Messunsicherheiten in Verbindung mit der Anatomie des Kauapparates zurückführen

Human Fetuin-A Rs4918 Polymorphism and its Association with Obesity in Healthy Persons and in Patients with Myocardial Infarction in Two Hungarian Cohorts.

BACKGROUND Human fetuin A (AHSG) has been associated with the development of obesity, insulin resistance, type 2 diabetes mellitus, and atherosclerosis. Observations on the role of AHSG rs4918 single-nucleotide polymorphism are contradictory. We investigated the association between variants of rs4918 and parameters of obesity, lipid status, tumor necrosis factor-alpha (TNFalpha), adipokines (adiponectin, resistin, leptin), and insulin resistance in healthy persons and in patients with previous myocardial infarction. MATERIAL AND METHODS This was a cross-sectional study comprising cohort 1 (81 healthy individuals) and cohort 2 (157 patients with previous myocardial infarction). We used the allele-specific KASP genotyping assay to detect rs4918 polymorphism. RESULTS In cohort 1, G-nucleotide carriers had significantly lower serum TNFalpha, adiponectin, and higher leptin concentrations than in non-G carriers. These differences, however, were not observed in cohort 2. In cohort 2, G-carriers had lower BMI and waist circumferences than in non-G carriers. The G allele was more frequent among lean than obese patients (RR=1.067, 95%CI=1.053-2.651, p=0.015). An association between BMI and rs4918 polymorphism was observed among patients without diabetes (CC/CG/GG genotypes: p=0.003, G vs. non-G allele: p=0.008) but not in diabetics. In addition, a strong linearity between BMI and the CC/CG/GG genotypes (association value: 4.416, p=0.036) and the frequency of the G allele (7.420, p=0.006) could be identified. In cohort 2, non-obese, non-diabetic G-carriers still had lower BMI and waist circumferences than in non-G carriers. CONCLUSIONS The rs4918 minor variant is associated with lower TNFalpha and adiponectin, higher leptin levels in healthy persons, and more favorable anthropomorphic parameters of obesity in cohort 2

Az autoimmun encephalitisek laboratóriumi vizsgálati lehetőségei = Autoimmune encephalitis: possibilities in the laboratory investigation

Absztrakt: Bevezetés: Az elmúlt 10 évben a nem klasszifikálható neurológiai vagy pszichiátriai tünetegyüttes képében megjelenő encephalitisek esetén egyre gyakrabban igazolódik be, hogy a háttérben a központi idegrendszer valamely fehérjéje ellen induló autoimmun folyamat áll. A paraneoplasiás limbicus encephalitisek esetében intracelluláris antigének (anti-Hu/ANNA1, anti-Ri/ANNA2, anti-CV2/CRMP5 és anti-Ma2/Ta) ellen indul immunreakció, mely mögött tüdő-, ovarium- vagy heredaganat áll, és jellemző a rossz prognózis. Ezzel szemben az utóbbi években felfedezett, színes klinikai képpel megjelenő autoimmun encephalitisek mögött gyakran bizonyítható a neuronalis sejtfelszíni receptor (NMDAR, GABABR, AMPAR) vagy szinaptikus fehérje (LGI1, CASPR2) ellen képződő autoantitestek jelenléte, ami immunszuppressziós kezelésre jól reagál. Célkitűzés: Célunk felhívni a figyelmet a neurológiai, pszichiátriai és intenzív terápiás ellátást igénylő autoimmun encephalitises esetek emelkedő számára, valamint az autoantitestek kimutatásának jelentőségére. Módszer: Laboratóriumunkba az elmúlt 6 évben 836 autoimmun encephalitis irányú, 717 beteghez tartozó vizsgálatkérés érkezett. A betegek szérum- és liquormintáit 6 különböző receptorfehérjével transzfektált sejtvonalból álló BIOCHIP-en vizsgáltuk indirekt immunfluoreszcens technikával. Eredmények: A vizsgált betegek 7,5%-ában tudtunk valamelyik receptorfehérje ellen IgG autoantitestet kimutatni. Gyakorisági sorrendben NMDAR > LGI1 > GABABR > CASPR2 ellen találtunk pozitív eseteket. Következtetés: Az autoantitest kimutatása segít a betegség korai stádiumban való felismerésében és a diagnózis felállításában. Mindez fontos, mert az időben felismert betegek eredményesen kezelhetőek plazmaferézissel vagy immunszuppresszív szerekkel, melyek hatékonyságát ismételt autoantitestmeghatározással lehet követni. Ezért a laboratóriumnak nagy szerepe lehet a gyorsan progrediáló kóros idegrendszeri folyamatok megállításában. Orv Hetil. 2018; 159(3): 107–112. | Abstract: Introduction: The role of autoimmune responses against central nervous system (CNS) antigens in encephalitis presenting with non-classified neurologic or psychiatric symptoms has been appreciated in the past decade. Paraneoplastic limbic encephalitis has a poor prognosis and is most commonly associated with lung, ovarium, and testicular neoplasms, leading to immune reactions against intracellular antigens (anti-Hu/ANNA1, anti-Ri/ANNA2, anti-CV2/CRMP5 and anti-Ma2/Ta). In contrast, the recently described autoimmune encephalitis subtypes present with a broad spectrum of symptoms, respond to autoimmune therapies well and usually associate with autoantibodies against neuronal cell surface receptors (NMDAR, GABABR, AMPAR) or synaptic proteins (LGI1, CASPR2). Aim: Our aim is to bring to awareness the increasing number of autoimmune encephalitis patients requiring neurologic, psychiatric and intensive care and to emphasize the significance of detecting various autoantibodies in diagnosing patients. Method: In the past 6 years, our laboratory received 836 autoimmune encephalitis diagnostic test requests from a total of 717 patients. Serum and cerebrospinal fluid (CSF) samples were analysed with indirect immunofluorescence using a BIOCHIP consisting of cell lines transfected with 6 different receptor proteins. Results: IgG autoantibodies against receptor proteins were present in 7.5% of patients. The frequency of positive samples was the following: NMDAR > LGI1 > GABABR > CASPR2. Conclusion: Detecting autoantibodies facilitates the diagnosis of autoimmune encephalitis in an early stage. Patients diagnosed early can be effectively treated with plasmapheresis and immunosuppressive drugs. The efficiency of therapies can be monitored by autoantibody detection. Therefore, the diagnostic immune laboratory plays an important role in proper diagnosis and in the prevention of rapidly progressing symptoms. Orv Hetil. 2018; 159(3): 107–112

Hemizygous nonsense variant in the moesin gene (MSN) leads to a new autoimmune phenotype of Immunodeficiency 50

Here we describe the investigation of two male siblings with juvenile total loss of teeth, early onset chronic leg ulcers and autoimmune thyroiditis in both patients, as well as focal segmental glomerulosclerosis with associated pulmonal emphysema in one and diabetes mellitus in the other patient. The clinical picture and lupus anticoagulant, cryoglobulin and cold agglutinin positivity suggested the diagnosis of antiphospholipid syndrome. Flow cytometry analysis showed immunophenotypes consistent with immune dysregulation: low number of naive T cells, elevated CD4+ T cell counts and decreased CD8+ T cell counts were detected, and more than half of the T helper population was activated. Because of the siblings’ almost identical clinical phenotype genetic alteration was suspected in the background of the immunodeficiency. Whole exome sequencing identified a previously not described hemizygous nonsense variant (c.650G>A, p.W217X) within exon 6 of the moesin gene (MSN) localized on chromosome X, resulting in significantly decreased MSN mRNA expression compared to healthy controls. We present a putative new autoimmune phenotype of Immunodeficiency 50 (MIM300988) characterized by antiphospholipid syndrome, Hashimoto’s thyroiditis, leg ulcer and juvenile loss of teeth, associated with W217X mutation of the MSN gene

The role of porosity in discriminating between tsunami and hurricane emplacement of boulders - a case study from the Lesser Antilles, southern Caribbean

Coastal boulder deposits are a consequence of high-energy wave impacts, such as storms, hurricanes or tsunami. Parameters useful for distinguishing between hurricane and tsunami origins include distance of a deposit from the coast, boulder weight and inferred wave height. In order to investigate the role of porosity on boulder transport and elucidate the distinction between tsunami and hurricane impacts, we performed Archimedean and optical 3D-profilometry measurements for the determination of accurate physical parameters for porous reef and coral limestone boulders from the islands of Aruba, Bonaire and Curaçao (ABC Islands, Netherlands Antilles, Leeward Islands). Subsets of different coral species and lithotypes constituting the boulders were sampled, the physical parameters of boulders were analyzed, and each boulder component was attributed to a certain range of porosity and density. Lowest porosities were observed in calcarenite (5–8%), whereas highest porosities were measured for serpulid reef rock (47–68%). Porous serpulid reef rock (0.8–1.2 g/cm3) and the coral Diploria sp. (0.6–1.0 g/cm3) possess the lowest bulk densities, while less porous calcarenite (2.0–2.7 g/cm3) and the coral Montastrea cavernosa yield the highest bulk density values (1.6–2.7 g/cm3). The obtained physical parameters were used to calculate boulder weights and both hurricane and tsunami wave heights necessary to initiate transport of these boulders. Boulders are up to 5.6 times lighter than given in previously published data, and hence required minimum hurricane or tsunami waves are lower than hitherto assumed. The calculated wave heights, the high frequency of tropical storms and hurricanes in the southern Caribbean and the occurrence of boulders exclusively on the windward sides of the islands, implicate that for boulders on the ABC Islands a hurricane origin is more likely than a tsunami origin

A turizmus munkaerő-helyzete a pandémia után

A turizmus a világgazdaság egyik legjelentősebb szektora. A foglalkoztatottak közül minden 11. ember itt talál munkát. A Covid-19 óriási károkat okozott a szektornak, sok millió munkavállaló elhagyta az ágazatot. Magyarországon is kulcskérdés a munkaerő-hiány. Vajon meg lehet-e oldani ezeket a problémákat, és van-e esély a szektor vonzerejének visszaállítására. Az EU részbeni finanszírozásában megvalósuló Next Tourism Generation projekt esélyt jelenthet a probléma megoldására

Association of human fetuin-A rs4917 polymorphism with obesity in 2 cohorts.

BACKGROUND: Previous studies have shown association of the multifunctional hepatic protein alpha2HS-glycoprotein/human fetuin A with insulin resistance, type 2 diabetes mellitus, metabolic syndrome, obesity, and atherosclerosis. Reports of contribution of alpha2HS-glycoprotein/human fetuin A rs4917 single-nucleotide polymorphism to the development of these pathologic processes are inconsistent. We aimed to investigate the association between variants of rs4917 and parameters of obesity, lipid status, the proinflammatory cytokine tumor necrosis factor alpha (TNF-alpha), adipokines (adiponectin, resistin), and insulin resistance in 2 cohorts. METHODS: Eighty-one healthy persons (cohort 1) and 157 patients with previous myocardial infarction (cohort 2) were included in this cross-sectional study. rs4917 Polymorphism was determined by the allele-specific KASP by design genotyping assays. RESULTS: In cohort 1, T-nucleotide carriers had lower low-density lipoprotein cholesterol levels compared with non-T carriers. The serum concentration of TNF-alpha was found to be higher carrying the non-T allele in cohort 1; however, this difference was not observed in cohort 2. In cohort 2, T carriers had lower body mass index and abdominal and waist circumferences than did non-T carriers. The T nucleotide was more frequent in nonobese than in obese patients (chi = 5.217, P = 0.022). Nonobese, nondiabetic T carriers still had lower body mass index and waist circumference than did non-T carriers. CONCLUSIONS: Our data suggest that the T nucleotide in rs4917 is associated with more favorable lipid status among healthy persons (i.e., lower low-density lipoprotein cholesterol) and anthropologic parameters of obesity in cohort 2. The protective role of the T allele may also be associated with lower TNF-alpha levels found in healthy individuals