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Wyszukujesz frazę "platelet derived" wg kryterium: Temat


Wyświetlanie 1-6 z 6
Tytuł:
PDGF-BB homodimer serum level – a good indicator of the severity of alcoholic liver cirrhosis
Autorzy:
Kurys-Denis, E.
Prystupa, A.
Luchowska-Kocot, D.
Krupski, W.
Bis-Wencel, H.
Panasiuk, L.
Tematy:
alcohol
liver cirrhosis
Child-Pugh score
platelet derived growth factor AA
platelet growth factor AB
platelet derived
growth factor BB
Pokaż więcej
Wydawca:
Instytut Medycyny Wsi
Powiązania:
https://bibliotekanauki.pl/articles/2085441.pdf  Link otwiera się w nowym oknie
Opis:
Introduction. Liver cirrhosis is a chronic disease in which progressive fibrosis is noted. This process leads to changed architectonics of the liver parenchyma and the appearance of regenerative nodules, all of which are caused by pathological activation of the hepatic stellate cells. This process is enhanced on a molecular level by many cytokines, with platelet-derived growth factors (PDGFs) playing the key role. Objective. The aim of the study was to assess serum concentrations of PDGFs active biodymers (PDGF-AA, PDGF-BB and PDGF-AB) in patients with alcoholic liver cirrhosis, and to correlate them with the stage of disease. Materials and method. 64 patients with alcoholic cirrhosis and a control group of 16 healthy individuals were analysed. Liver cirrhosis was determined based on clinical image, history of the patients’ alcohol consumption, laboratory findings and abdominal ultrasonography. The serum PDGF-AA, PDGF-BB and PDGF-AB concentrations were determined using ELISA kits. Results. Serum concentration of PDGF-AA and PDGF-BB homodimers increases in patients with alcoholic liver cirrhosis (p=0.034 and p<0.0001, respectively), unlike the serum concentration of PDGF-AB heterodimer (p>0.05). When the stage of the disease increases, the concentrations of PDGF-AA and PGFD-BB in blood also oncrease. Furthermore, the serum level of both PDGF-AA and PDGF-BB correlates significantly with the severity of alcoholic liver cirrhosis (measured by Pugh-Child’s scale), the correlation being stronger in the case of PDGF-BB levels than PDGF-AA (R=0.28; p=0.027 and R=0.26; p=0.038, respectively). Conclusions. The plasma levels of PDGF-AA and -BB may be indicators of alcohol-induced liver fibrosis process, and might be considered as future possible treatment targets, with PDGF-BB levels being an even better indicator than PDGF-AA levels.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Flow cytometric assessment of endothelial and platelet microparticles in patients with atrial fibrillation treated with dabigatran
Autorzy:
Tomkiewicz-Pająk, Lidia
Olszowska, Maria
Kaźnica-Wiatr, Magdalena
Podolec, Piotr
Drabik, Leszek
Lenart-Migdalska, Aleksandra
Opis:
The prothrombotic state in patients with atrial fibrillation (AF) is related to endothelial injury, the activation of platelets and the coagulation cascade. We evaluated the levels of platelet- (CD42b) and endothelial-derived (CD144) microparticles in the plasma patients with non-valvular AF treated with dabigatran at the time of expected minimum and maximum drug plasma concentrations. Following that, we determined the peak dabigatran plasma concentration (cpeak ). CD42b increased after taking dabigatran (median [IQR] 36.7 [29.4-53.3] vs. 45.6 [32.3-59.5] cells/mL; p ¼ 0.025). The concentration of dabigatran correlated negatively with the post-dabigatran change in CD42b (DCD42b, r ¼ -0.47, p ¼ 0.021). In the multivariate model, the independent predictors of DCD42b were: cpeak (HR -0.55; with a 95% confidence interval, CI [-0.93, -0.16]; p ¼ 0.007), coronary artery disease (CAD) (HR -0.41; 95% CI [-0.79, -0.02]; p ¼ 0.037) and peripheral artery disease (PAD) (HR 0.42; 95% CI [0.07, 0.74]; p ¼ 0.019). CD144 did not increase after dabigatran administration. These data suggest that low concentrations of dabigatran may be associated with platelet activation. PAD and CAD have distinct effects on CD42b levels during dabigatran treatment.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Analiza powierzchniowa nanowarstw dla zastosowań biomedycznych
Surface analysis of nanolayers for biomedical applications
Autorzy:
Bajor, Adrianna
Opis:
Silanization and protein immobilization to silicon wafers to create a surface able to attach platelet-derived microparticles, a major risk factor for arterial pro-thrombotic pathologies.
Modyfikacji silanami i immobilizacja przeciwciałami na podłożu krzemowym, w celu stworzenia powierzchni zdolnej do przyłączenia mikropęcherzyków płytkowych PMP, które są uważane za jedne z głównych faktorów tętniczych patologii prozakrzepowych takich jak zawał mięśnia sercowego czy udar mózgu.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Tytuł:
Early response of selected haemostatic and haematological parameters to physical activity in young women - the potential impact of oral contraceptives
Autorzy:
Jastrzębska, Maria
Żyżniewska-Banaszak, Ewelina
Nawrot, Małgorzata
Marcinowska, Zuzanna
Siennicka, Aldona
Chełstowski, Kornel
Stachowiak, Paweł
Kordaczuk, Michał
Przybycień, Krzysztof
Clark, Jeremy
Tematy:
exercise
contraception
haemostasis
platelet function tests
cell derived microparticles
Pokaż więcej
Wydawca:
Instytut Medycyny Wsi
Powiązania:
https://bibliotekanauki.pl/articles/972632.pdf  Link otwiera się w nowym oknie
Opis:
Introduction and objective. Exercise (submaximal) in untrained subjects can modify haemostasis toward hypercoagulability, especially among women using oral contraceptives (OC). The aim of this study was to investigate whether this can be explained by platelet haemostasis and changes in the generation of membrane microparticles. Materials and method. Young, healthy women (n=60) were divided into 2 equal groups: a study group OC (+) who had used OC for >3 months, and controls who had never used oral contraceptives OC(-). Exclusion criteria: those with systematic daily physical activity. Participants were subjected to treadmill exercise (Cardiac Diagnostic System; model CH2000) using the Bruce protocol/ AHA guidelines. Platelet aggregation with arachidonic acid (ASPI test) or ADP (ADP test), membrane microparticle (MP) activity, plasma coagulation times (APTT/PT) and blood count were determined before and 45 minutes after exercise. Results. Before exercise, the OC(+) group had slightly higher platelet aggregation (ADP test), significantly lower MP activity, slightly lower PLT and slightly higher PDW rate. Exercise caused slight inhibition of platelet aggregation (ASPI test), and significant decrease in MP activity – only in the OC(-) group. After exercise, in both groups there was a significant decrease in PLT and increase in WBC, more pronounced in OC(+) group. Conclusions. Submaximal exercise was beneficial for haemostasis in women not using hormonal contraception, associated primarily with reduced MP activity. No beneficial effects of physical activity were found for women using hormonal contraceptives, possibly associated with a hypercoagulable state, and higher reactivity of blood platelets under the influence of the use of contraceptives.
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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