74 research outputs found

    Useful Electrocardiographic Signs to Support the Prediction of Favorable Response to Cardiac Resynchronization Therapy

    Get PDF
    Cardiac resynchronization therapy (CRT) is a cornerstone therapeutic opportunity for selected patients with heart failure. For optimal patient selection, no other method has been proven to be more effective than the 12-lead ECG, and hence ECG characteristics are extensively researched. The evaluation of particular ECG signs before the implantation may improve selection and, consequently, clinical outcomes. The definition of a true left bundle branch block (LBBB) seems to be the best starting point with which to select patients for CRT. Although there are no universally accepted definitions of LBBB, using the classical LBBB criteria, some ECG parameters are associated with CRT response. In patients with non-true LBBB or non-LBBB, further ECG predictors of response and non-response could be analyzed, such as QRS fractionation, signs of residual left bundle branch conduction, S-waves in V6, intrinsicoid deflection, or non-invasive estimates of Q-LV which are described in newer publications. The most important and recent study results of the topic are summarized and discussed in this current review

    Factor structure of The Opening Minds Stigma Scale for Health Care Providers and psychometric properties of its Hungarian version

    Get PDF
    BACKGROUND: The Opening Minds Stigma Scale for Health Care Providers (OMS-HC) is a widely used questionnaire to measure the stigmatising attitudes of healthcare providers towards patients with mental health problems. The psychometric properties of the scale; however, have never been investigated in Hungary. We aimed to thoroughly explore the factor structure of the OMS-HC and examine the key psychometric properties of the Hungarian version. METHODS: The OMS-HC is a self-report questionnaire that measures the overall stigmatising attitude by a total score, and three subscales can be calculated: Attitude, Disclosure and Help-seeking, and Social Distance. Our study population included specialists and trainees in adult and child psychiatry (n = 211). Exploratory and confirmatory factor analyses were performed, and higher-order factors were tested. We calculated the test-retest reliability on a subgroup of our sample (n = 31) with a follow-up period of 1 month. The concurrent validity of the scale was measured with the Mental Illness: Clinician\u27s Attitudes-4 scale (MICA-4). RESULTS: Three factors were extracted based on a parallel-analysis. A bifactor solution (a general factor and three specific factors) showed an excellent model-fit (root mean square error of approximation = 0.025, comparative fit index = 0.961, and Tucker-Lewis index = 0.944). The model-based reliability was low; however, the general factor showed acceptable reliability (coefficient omega hierarchical = 0.56). The scale demonstrated a good concurrent validity with the MICA-4 [intraclass correlation coefficient (ICC) = 0.77]. The test-retest reliability was excellent for the general factor (ICC = 0.95) and good for the specific factors (ICC = 0.90, 0.88, and 0.84, respectively). CONCLUSIONS: The three dimensions of the OMS-HC was confirmed, and the scale was found to be an adequate measure of the stigmatising attitude in Hungary. The bifactor model is more favourable as compared to the three correlated factor model; however, despite the excellent internal structure, its model-based reliability was low

    Activation of Astroglial Calcium Signaling by Endogenous Metabolites Succinate and Gamma-Hydroxybutyrate in the Nucleus Accumbens

    Get PDF
    Accumulating evidence suggests that different energy metabolites play a role not only in neuronal but also in glial signaling. Recently, astroglial Ca2+ transients evoked by the major citric acid cycle metabolite succinate (SUC) and gamma-hydroxybutyrate (GHB) that enters the citric acid cycle via SUC have been described in the brain reward area, the nucleus accumbens (NAc). Cells responding to SUC by Ca2+ transient constitute a subset of ATP-responsive astrocytes that are activated in a neuron-independent way. In this study we show that GHB-evoked Ca2+ transients were also found to constitute a subset of ATP-responsive astrocytes in the NAc. Repetitive Ca2+ dynamics evoked by GHB suggested that Ca2+ was released from internal stores. Similarly to SUC, the GHB response was also characterized by an effective concentration of 50 ΌM. We observed that the number of ATP-responsive cells decreased with increasing concentration of either SUC or GHB. Moreover, the concentration dependence of the number of ATP-responsive cells were highly identical as a function of both [SUC] and [GHB], suggesting a mutual receptor for SUC and GHB, therefore implying the existence of a distinct GHB-recognizing astroglial SUC receptor in the brain. The SUC-evoked Ca2+ signal remained in mice lacking GABAB receptor type 1 subunit in the presence and absence of the N-Methyl-d-Aspartate (NMDA) receptor antagonist (2R)-amino-5-phosphonovaleric acid (APV), indicating action mechanisms independent of the GABAB or NMDA receptor subtypes. By molecular docking calculations we found that residues R99, H103, R252, and R281 of the binding crevice of the kidney SUC-responsive membrane receptor SUCNR1 (GPCR91) also predict interaction with GHB, further implying similar GHB and SUC action mechanisms. We conclude that the astroglial action of SUC and GHB may represent a link between brain energy states and Ca2+ signaling in astrocytic networks

    A gyerekszegénység csökkentése tovåbbra is kulcskérdés

    Get PDF
    A tanulmĂĄny a „Legyen jobb a gyermekeknek” Nemzeti StratĂ©gia kistĂ©rsĂ©gi alkalmazĂĄsi kĂ­sĂ©rletĂ©rƑl szĂłl. Bemutatja, hol tart ma a 2006 nyarĂĄn a szĂŒksĂ©gletek, a helyi erƑforrĂĄsok Ă©s a fogadĂłkĂ©szsĂ©g szĂĄmbavĂ©telĂ©vel elindĂ­tott SzĂ©csĂ©nyi GyerekesĂ©ly Program, melyek a kitƱzött cĂ©ljai, valamint összefoglalja az eddigi törtĂ©nĂ©seket, eredmĂ©nyeket Ă©s nehĂ©zsĂ©geket. A 2007 mĂĄjusĂĄban orszĂĄggyƱlĂ©si hatĂĄrozatkĂ©nt elfogadott Nemzeti StratĂ©gia egyes terĂŒletein vannak elƑrelĂ©pĂ©sek, komplex orszĂĄgos szintƱ megvalĂłsĂ­tĂĄsa azonban – fƑkĂ©ppen a forrĂĄsok szƱkössĂ©gĂ©nek következtĂ©ben – nem problĂ©mamentes. EzĂ©rt is fontos, hogy egy hĂĄtrĂĄnyos helyzetƱ kistĂ©rsĂ©gben, a gyakorlatban szerzett tapasztalatok alapjĂĄn lehessen tovĂĄbbgondolni a gyermekszegĂ©nysĂ©g csökkentĂ©sĂ©nek feladatait. Az Ă­rĂĄs röviden beszĂĄmol a Nemzeti StratĂ©gia hĂĄtterĂ©rƑl, aktuĂĄlis lehetƑsĂ©geirƑl Ă©s korlĂĄtairĂłl, majd a helyi alkalmazĂĄsi kĂ­sĂ©rlet elveit, fejlesztĂ©si terĂŒleteit, tĂĄgabb vonatkozĂĄsban egy hĂĄtrĂĄnyos helyzetƱ kistĂ©rsĂ©g – az orszĂĄg szĂĄmos mĂĄs terĂŒletĂ©re jellemzƑ – kedvezƑtlen helyzetĂ©t tĂĄrgyalja

    Reference genes for livestock gene expression profiling – Literature review

    Get PDF
    Quantitative real-time polymerase chain reaction (qPCR) is an essential tool for understanding animal cell’s response to developmental progression or to different experimental conditions at gene expression level. However the reliability of this method heavily lies on proper normalization (measuring a target and a reference gene’s expression from the same sample to correct for technical related variations).Our literature review aimed to summarize the articles addressing the most important livestock species in regards of reference gene stability used as normalizers for quantitative real-time polymerase chain reaction experiments. Stably expressing reference genes were categorized into 14 distinct groups according to gene function. The number of reference genes tested and the publication numbers according to years and the ranking algorithms were also noted.Counting showed that genes encoding ribosomal protein components are ranked as most stable in majority of cases and therefore should be taking into account for qPCR stable normalizer gene finding experiments

    A thrombocyta mint gyulladĂĄsos sejt = The platelet as an inflammatory cell

    Get PDF
    A kutatĂĄst az alĂĄbbi nĂ©gy fĂłkuszterĂŒleten vĂ©geztĂŒk: 1. A P-selectin glycoprotein ligand-1 (PSGL-1) knock out, modellben leĂ­rtuk, hogy a PSGL-1 hiĂĄnya protektĂ­v szereppel bĂ­r a thrombosis kialakulĂĄsa sorĂĄn Ă©s megĂĄllapĂ­tottuk, hogy a PSGL-1 hiĂĄnyĂĄban a myeloid sejtek Ă©s azok prekurzorai szignifikĂĄnsan magasabb szĂĄmban szabadulnak fel, G-CSF hatĂĄsĂĄra (közlĂ©s alatt). 2. A thrombocyta aktivĂĄciĂł modulĂĄciĂł terĂ©n megĂĄllapĂ­tottuk, hogy a calyculin-A (CLA) hatĂĄsĂĄra jelentƑsen csökken a thromin receptor anragonista peptid (TRAP) aktivĂĄciĂł ĂĄltal lĂ©trehozott vĂĄlasz. Valamint leĂ­rtuk, hogy a hagyomĂĄnyos anti-platelet kezelĂ©s mellett a P-selectin, a PF4, valamint a CD40L receptorokon keresztĂŒl milyen mĂłdon befolyĂĄsolhatĂł a thrombocyta mƱködĂ©s. 3. Az inlammatorikus stimulusok közĂŒl megĂĄllapĂ­tottuk, hogy a lipopoliszacharid (LPS) formĂĄk közĂŒl kizĂĄrĂłlag az Re-LPS formĂĄnak van hatĂĄsa a thrombocyta aktivĂĄciĂł bizonyos paramĂ©tereire. 4. A klinikai kollaborĂĄciĂłs vizsgĂĄlatok terĂ©n a thrombocyta rendellenessĂ©gek közĂŒl kollaborĂĄciĂłs vizsgĂĄlataink sorĂĄn meghatĂĄroztuk, hogy Glanzmann thrombasthenia esetĂ©n a thrombocyta felszĂ­ni receptorok expressziĂłjĂĄt Ă©s leĂ­rtuk ezek TRAP aktivĂĄciĂł utĂĄn megjelenƑ szintjĂ©t. TovĂĄbbi klinikai kollaborĂĄciĂłs vizsgĂĄlataink eredmĂ©nyekĂ©nt kĂ©t beteg populĂĄciĂłban (obesitas Ă©s PAD) mutattunk ki jelentƑs vĂ©rlemezke aktivĂĄciĂłt illetve ezek összefĂŒggĂ©sĂ©t a betegsĂ©g alatti egyĂ©b vĂĄltozĂłkkal. | The research activity was carried out in 4 focus areas: 1. In P-selectin glycoprotein ligand-1 (PSGL-1) knock out mice we verified, that PSGL-1 is protective against thrombosis in a murine model (Miszti-Blasius et al, 2011), and we found that in the absence of PSGL-1 mature and precursor myeloid cells are released earlier upon G-CSF treatment (submitted). 2. Studying the modulation of platelet activation we proved that calyculin-A (CLA) inhibits TRAP elicited platelet activation parallel with its phosphatase inhibitor activity. (Simon Z et al, 2010) In case of conventional anti-platelet treatment we described the modulation of platelet fuction via P-selectin, PF4 and CD40L receptors (Nagy B Jr et al, 2012) 3. We investigated the effect of lipopolysaccharide and (LPS). We found that out of the LPS isoforms only the Re-LPS but not the S-LPS is capable of mediating platelet activation (Kappelmayer et al, 2012, under revision) 4. In case of clinical collaborations on platelets, we determined platelet surface glycoprotein expressions in Glanzmann thrombastenia and described their expression levels after TRAP activation. Further collaborative studies proved considerable platelet activation in obese and peripheral arterial disease patients (CsongrĂĄdi et al 2011, Shemirani et al, 2011

    A COVID–19-jĂĄrvĂĄny hatĂĄsa a leggyakoribb lĂ©gzƑszervi megbetegedĂ©sek lefolyĂĄsĂĄra

    Get PDF
    BevezetĂ©s: A SARS-CoV-2 ĂĄltal okozott fertƑzĂ©s az elmĂșlt hĂĄrom Ă©vben meghatĂĄrozta mindennapi Ă©letĂŒnket, Ă©s nem vĂĄrt terhet rĂłtt az egĂ©szsĂ©gĂŒgyi ellĂĄtĂłrendszerre, többek között azĂĄltal, hogy komoly kockĂĄzati tĂ©nyezƑt jelenthet a mĂĄr meglĂ©vƑ, kĂŒlönbözƑ lĂ©gzƑszervi megbetegedĂ©sekkel kĂŒzdƑ betegek szĂĄmĂĄra is. CĂ©lkitƱzĂ©s: A COVID–19 Ă©s a fertƑzĂ©skor mĂĄr fennĂĄllĂł lĂ©gzƑszervi megbetegedĂ©sek, elsƑsorban a krĂłnikus obstruk- tĂ­v tĂŒdƑbetegsĂ©g (COPD), valamint az asztma összefĂŒggĂ©seinek feltĂĄrĂĄsa. MĂłdszer: Hazai vizsgĂĄlatunkban közel 29 000 beteg adatait dolgoztuk fel retrospektĂ­ven. EredmĂ©nyek: EredmĂ©nyeink alapjĂĄn elmondhatĂł, hogy a COPD mint tĂĄrsbetegsĂ©g meglĂ©te a nemzetközi megĂĄllapĂ­- tĂĄssal egybehangzĂłan összefĂŒggĂ©st mutat a COVID–19-fertƑzĂ©s sĂșlyossĂĄgĂĄval, illetve enyhĂ©n növeli az intenzĂ­v osz- tĂĄlyos kezelĂ©s Ă©s a gĂ©pi lĂ©legeztetĂ©s szĂŒksĂ©gessĂ©gĂ©nek kockĂĄzatĂĄt a SARS-CoV-2 okozta megbetegedĂ©s sorĂĄn. Asztma esetĂ©ben mindezt nem sikerĂŒlt kimutatnunk, vagyis sem a SARS-CoV-2-fertƑzĂ©s sĂșlyossĂĄgĂĄt, sem az intenzĂ­v osztĂĄ- lyos kezelĂ©s Ă©s a gĂ©pi lĂ©legeztetĂ©s szĂŒksĂ©gessĂ©gĂ©t nem befolyĂĄsolta jelentƑsen az asztma mint tĂĄrsbetegsĂ©g meglĂ©te. MegbeszĂ©lĂ©s: Ahogy nemzetközi tanulmĂĄnyokban is olvashatĂł, a COPD mint tĂĄrsbetegsĂ©g meglĂ©te nem növeli jelentƑs mĂ©rtĂ©kben a SARS-CoV-2-fertƑzĂ©s kockĂĄzatĂĄt. Ugyanakkor kijelenthetƑ, hogy a COPD növeli a COVID–19-pozitĂ­v betegek kĂłrhĂĄzba kerĂŒlĂ©sĂ©nek esĂ©lyĂ©t, Ă©s emeli a megbetegedĂ©s sĂșlyosabb lefolyĂĄsĂĄnak valĂłszĂ­nƱsĂ©gĂ©t. Tekintettel a COPD-betegekben a tĂŒdƑ kĂĄrosodĂĄsa sorĂĄn vĂ©gbemenƑ szerkezeti ĂĄtĂ©pĂŒlĂ©sre Ă©s rendellenes regenerĂĄlĂłdĂĄsi folyamatokra, e betegek a vĂ­rusfertƑzĂ©s lezajlĂĄsa utĂĄn fokozott odafigyelĂ©st, valamint szemĂ©lyre szabott rehabilitĂĄciĂłt igĂ©nyelnek. KövetkeztetĂ©s: ÖsszessĂ©gĂ©ben elmondhatĂł, hogy a jövƑben a szemĂ©lyre szabott terĂĄpiĂĄs megközelĂ­tĂ©s bevezetĂ©sĂ©hez elengedhetetlen a kĂŒlönbözƑ COPD-s fenotĂ­pusok (valamint egyĂ©b krĂłnikus tĂŒdƑbetegsĂ©gek) Ă©s a SARS-CoV-2-fer- tƑzĂ©s klinikai megnyilvĂĄnulĂĄsainak mĂ©lyrehatĂł vizsgĂĄlata

    The importance of m6A topology in chicken embryo mRNA; a precise mapping of m6A at the conserved chicken ÎČ-actin zipcode

    Get PDF
    N6-Methyladenosine (m6A) in mRNA regulates almost every stage in the mRNA life cycle, and the development of methodologies for the high throughput detection of methylated sites in mRNA using m6A-specific methylated RNA immunoprecipitation with next-generation sequencing (MeRIPSeq) or m6A individual-nucleotide-resolution cross-linking and immunoprecipitation (miCLIP) have revolutionized the m6A research field. Both of these methods are based on immunoprecipitation of fragmented mRNA. However, it is well documented that antibodies often have nonspecific activities, thus verification of identified m6A sites using an antibody-independent method would be highly desirable. We mapped and quantified the m6A site in the chicken ÎČ-actin zipcode based on the data from chicken embryo MeRIPSeq results and our RNA-Epimodification Detection and Base-Recognition (RedBaron) antibody independent assay. We also demonstrated that methylation of this site in the ÎČ-actin zipcode enhances ZBP1 binding in vitro, whilst methylation of a nearby adenosine abolishes binding. This suggests that m6A may play a role in regulating localised translation of ÎČ-actin mRNA, and the ability of m6A to enhance or inhibit a reader protein’s RNA binding highlights the importance of m6A detection at nucleotide resolution

    De novo diabetes Ă©s mĂĄjĂĄtĂŒltetĂ©s, kĂŒlönös tekintettel a hepatitis C-vĂ­rus kiĂșjulĂĄsĂĄra = New-onset diabetes mellitus after liver transplantation

    Get PDF
    A de novo diabetes mellitus a mĂĄjĂĄtĂŒltetĂ©s gyakori szövƑdmĂ©nye. CĂ©lkitƱzĂ©s: A de novo diabetes gyakorisĂĄgĂĄt, jelentƑsĂ©gĂ©t Ă©s a kockĂĄzati tĂ©nyezƑk szerepĂ©t vizsgĂĄltuk. MĂłdszer: 1995 Ă©s 2009 között 310 mĂĄjĂĄtĂŒltetett beteg adatait dolgoztuk fel retrospektĂ­v mĂłdszerrel. De novo diabetest ĂĄllapĂ­tottunk meg, ha az Ă©homi vĂ©rcukor a 3. posztoperatĂ­v hĂłnapon tĂșl ismĂ©telten >6,8 mmol/l volt, Ă©s/vagy a mĂĄjĂĄtĂŒltetĂ©s utĂĄn tartĂłs, a 3. posztoperatĂ­v hĂłnapot meghaladĂłan is fenntartott antidiabetikus terĂĄpia indult. EredmĂ©nyek: De novo diabetes a betegek 20%-ĂĄnĂĄl (63 beteg) alakult ki. A de novo Ă©s a kontrollcsoport között az alĂĄbbiakban talĂĄltunk kĂŒlönbsĂ©get. Donor-testtömegindex (24±3 vs. 22,4±3,6 kg/m 2 , p = 0,003), fĂ©rfi nem (58% vs. 33%, p = 0,002). RecipiensĂ©letkor (47,6±7,2 vs. 38,3±14,6 Ă©v, p<0,001), -testtömegindex (26,7±3,8 vs. 23,3±5,6 kg/m 2 , p<0,001), fĂ©rfi nem (60% vs. 44%, p = 0,031). A de novo diabetesesek csoportjĂĄban a betegek 66%-ĂĄt HCV talajĂĄn kialakult cirrhosis miatt transzplantĂĄltĂĄk, a kontrollcsoportban ez csak 23% volt (p<0,001). Az 1, 3, 5 Ă©s 8 Ă©ves kumulatĂ­v betegtĂșlĂ©lĂ©s a kontrollcsoportban 95%, 91%, 88% Ă©s 88%, a de novo csoportban a megfelelƑ Ă©rtĂ©kek 87%, 79%, 79% Ă©s 64% (p = 0,011). Az 1, 3, 5 Ă©s 8 Ă©ves kumulatĂ­v grafttĂșlĂ©lĂ©s a kontrollcsoportban 92%, 87%, 86% Ă©s 79%, a de novo csoportban a megfelelƑ Ă©rtĂ©kek 87%, 79%, 79%, 65% (p = NS). AzoknĂĄl a betegeknĂ©l, akiknĂ©l a C-vĂ­rus korai (6 hĂłnapon belĂŒli) kiĂșjulĂĄsĂĄt Ă©szleltĂŒk, többsĂ©gben de novo diabetes is kialakult (74% vs. kontroll 26%, p = 0,03). A betegek 53%-ĂĄban Ă©szleltĂŒnk tĂ­zszeres vĂ­rustiter-emelkedĂ©st a mƱtĂ©t utĂĄni 6 hĂłnapon belĂŒl a preoperatĂ­v Ă©rtĂ©khez viszonyĂ­tva diabetes kialakulĂĄsa esetĂ©n, a kontrollnĂĄl ez 20% volt (p = 0,028). A de novo csoportban magasabb volt az ĂĄtlagos (Ishak-Knodell) fibrosis score az antivirĂĄlis kezelĂ©s megkezdĂ©sĂ©t követƑen 1 Ă©vvel (2,05±1,53 vs. 1,00±1,08, p = 0,039). KövetkeztetĂ©s: MĂĄjĂĄtĂŒltetĂ©st követƑ de novo diabetes kockĂĄzati tĂ©nyezƑi az idƑskor, elhĂ­zĂĄs, fĂ©rfi nem Ă©s a C-vĂ­rus okozta cirrhosis. VĂ­ruspozitĂ­v betegek körĂ©ben a korai rekurrencia, sĂșlyosabb viraemia Ă©s az antivirĂĄlis kezelĂ©s ellenĂ©re kialakulĂł sĂșlyosabb fibrosis összefĂŒgg a de novo diabetes kialakulĂĄsĂĄval. | New-onset diabetes is a common complication after liver transplantation. Aim: We aimed to analyze the incidence and rate of known risk factors and the impact of new-onset diabetes mellitus on postoperative outcome. Methods: We retrospectively evaluated the files of 310 patients who underwent liver transplantation between 1995 and 2009. Definition of new-onset diabetes included: repeated fasting serum glucose >6.8 mmol/l and/or sustained antidiabetic therapy that was present 3 months after transplantation. Results: New-onset diabetes occurred in 63 patients (20%). Differences between the new-onset and the control group were the donor body mass index (24±3 vs. 22.4±3.6 kg/m 2 , p = 0.003), donor male gender (58% vs. 33%, p = 0.002), and recipient age (47.6±7.2 vs. 38.3±14.6 year, p<0.001), body mass index (26.7±3.8 vs. 23.3±5.6 kg/m 2 , p<0.001), male gender (60% vs. 44%, p = 0.031). The 66% of patients with new-onset diabetes were transplanted with cirrhosis caused by hepatitis C virus infection, while in the control group the rate was 23% (p<0.001). Cumulative patient survival rates at 1, 3, 5 and 8 year were 95%, 90.6%, 88% and 88% in the control group, and 87%, 79%, 79% and 64% in the de novo group, respectively (p = 0.011). Cumulative graft survival rates at 1, 3, 5 and 8 year in the control group were 92%, 87%, 86% and 79%, in the de novo diabetes group the rates were 87%, 79%, 79%, 65%, respectively (p = NS). In case of early recurrence (in 6 months), majority of patients developed new-onset diabetes (74% vs. control 26%, p = 0.03). More patients had more than 10 times higher increase of the postoperative virus titer correlate to the preoperative titer in the de novo diabetes group (53% vs. 20%, p = 0.028). Mean fibrosis score was higher in new-onset group one year after the beginning of antiviral therapy (2.05±1.53 vs. 1.00±1.08, p = 0.039). Conclusions: Risk factors for new-onset diabetes after transplantation are elder age, obesity, male gender and cirrhosis due to hepatitis C infection. The early recurrence, viremia and more severe fibrosis after antiviral therapy have an impact on the occurrence of new-onset diabetes in hepatitis C positive patients
    • 

    corecore