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CK2{beta} regulates thrombopoiesis and Ca2+-triggered platelet activation in arterial thrombosis
Platelets, anucleated megakaryocyte (MK)-derived cells, play a major role in hemostasis and arterial thrombosis. Although protein kinase casein kinase 2 (CK2) is readily detected in MKs and platelets, the impact of CK2-dependent signaling on MK/platelet (patho-)physiology has remained elusive. The present study explored the impact of the CK2 regulatory β-subunit on platelet biogenesis and activation. MK/platelet-specific genetic deletion of CK2β (ck2β–/–) in mice resulted in a significant macrothrombocytopenia and an increased extramedullar megakaryopoiesis with an enhanced proportion of prematur...
Source: Blood - December 21, 2017 Category: Hematology Authors: Münzer, P., Walker-Allgaier, B., Geue, S., Langhauser, F., Geuss, E., Stegner, D., Aurbach, K., Semeniak, D., Chatterjee, M., Gonzalez Menendez, I., Märklin, M., Quintanilla-Martinez, L., Salih, H. R., Litchfield, D. W., Buchou, T., Kleins Tags: Platelets and Thrombopoiesis, Thrombosis and Hemostasis Source Type: research

Results of the STOP-Hypertension-2 Trial.
Authors: Hansson L Abstract The second Swedish Trial in Old patients with Hypertension (STOP-Hypertension-2) was conducted to compare the effects of 'newer( antihypertensive therapies (angiotensin converting enzyme [ACE] inhibitors and calcium antagonists) and established therapies (beta-blockers and diuretics) on cardiovascular mortality and morbidity in elderly hypertensive patients. A total of 6614 patients were randomized to receive conventional treatment, ACE inhibitors or calcium antagonists, and followed for a mean of 5 years. The primary endpoint was a combination of fatal stroke, fatal myocardial infarctio...
Source: Blood Pressure - April 23, 2017 Category: Hematology Tags: Blood Press Source Type: research

DL-3-n-butylphthalide inhibits platelet activation via inhibition of cPLA2-mediated TXA2 synthesis and phosphodiesterase.
In conclusion, NBP significantly inhibits human platelet activation via inhibition of cPLA2-mediated TXA2 synthesis and PDE, and may be effective as an antiplatelet drug to treat other arterial thrombotic diseases. PMID: 25734213 [PubMed - in process]
Source: Platelets - February 14, 2016 Category: Hematology Tags: Platelets Source Type: research

A Pharmacoeconomic Analysis of Phosphate Binders Cost-Effectiveness in the RISCAVID Study
Background: A pharmacoeconomic analysis of the RISCAVID database aimed at assessing the cost effectiveness of phosphate binders in preventing CV mortality and morbidity over 7 years was performed. Methods: Morbid or fatal events occurring in 750 chronic HD patients were recorded. Statistical analysis evaluated the distribution of variables and the effect of sevelamer on survival. A cost-effectiveness evaluation was performed using a probabilistic model based on a Markov chain. Results: Multivariate analysis showed that treatment with sevelamer was associated with a reduced stroke incidence by 52% (p = 0.04) and reduced lev...
Source: Blood Purification - March 3, 2015 Category: Hematology Source Type: research

Platelet 12-LOX is essential for Fc{gamma}RIIa-mediated platelet activation
In this study, we show for the first time that platelet 12(S)-lipoxygenase (12-LOX), a highly expressed oxylipin-producing enzyme in the human platelet, is an essential component of FcRIIa-mediated thrombosis. Pharmacologic inhibition of 12-LOX in human platelets resulted in significant attenuation of FcRIIa-mediated aggregation. Platelet 12-LOX was shown to be essential for FcRIIa-induced phospholipase C2 activity leading to activation of calcium mobilization, Rap1 and protein kinase C activation, and subsequent activation of the integrin αIIbβ3. Additionally, platelets from transgenic mice expressing human FcR...
Source: Blood - October 2, 2014 Category: Hematology Authors: Yeung, J., Tourdot, B. E., Fernandez-Perez, P., Vesci, J., Ren, J., Smyrniotis, C. J., Luci, D. K., Jadhav, A., Simeonov, A., Maloney, D. J., Holman, T. R., McKenzie, S. E., Holinstat, M. Tags: Platelets and Thrombopoiesis, Thrombosis and Hemostasis Source Type: research

MC-002 exhibits positive effects against platelets aggregation and endothelial dysfunction through thromboxane A2 inhibition
In conclusion, MC-002 exerted antiplatelet aggregation effect through TXA2 inhibition and relieved inflammatory injury of endothelial cells through NF-κB signal pathway.
Source: Thrombosis Research - February 12, 2014 Category: Hematology Authors: Weirong Fang, Jie Wei, Dan Han, Xi Chen, Guangwei He, Qiang Wu, Shaoxing Chu, Yunman Li Tags: Platelets and cell biology Source Type: research

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