Influence of the alpha-adrenoreceptor naftopidil and doxazosin, on adrenaline-induced serotonin platelets: comparison with the antagonists, collagen and efflux by human effects of nifedipine.

Abstract:

:Collagen (5 microg/ml) stimulation of washed platelets increased endogenous serotonin (5-HT) release to the medium from 13.88 1.39 to 188.67 26.37 pmol/108 platelets ( P < 0.001). Adrenaline (16 microM) also increased 5-HT release, from 11.0 1.46 to 110.6 29.9 pmol/108 platelets ( P < 0.02). Naftopidil enhanced collagen-induced 5-HT efflux; significant increases occurred with 2 microM (+71.6%, P < 0.01), 10 microM (+89.1%, P < 0.01) and 40 microM (+69.7%, P < 0.01). With 0.4 muM and 2 microM naftopidil, adrenaline-induced 5-HT release was enhanced, albeit non-significantly, whilst with 10 microM and 40 muM naftopidil release was reduced (40 microM,-58.5%, P < 0.05). Doxazosin increased collagen-induced 5-HT release, significant increases being recorded with 7.5 microM (+81.7%, P < 0.05) and 30 microM (+78.4%, P < 0.05). Adrenaline-induced 5-HT release was also increased by doxazosin, but not significantly. Collagen-stimulated 5-HT release was inhibited by nifedipine (7 microM,-38.8%, P < 0.05; 28 microM, -61.2%, P < 0.001). These data suggest that the-antagonists, naftopidil and doxazosin, and the Ca2+ channel blocker, nifedipine, influence agonist-induced platelet 5-HT release through different mechanisms. Thus naftopidil and doxazosin may possess 5-HT transporter-blocking activity. The observation that naftopidil inhibited, adrenaline-induced 5-HT release may indicate that naftopidil also inhibits adrenaline uptake and exchange with dense granular 5-HT, with consequent inhibition of 5-HT release and platelet aggregation. The data obtained with nifedipine are consistent with 5-HT release being reduced as a result of its inhibitory action on platelet Ca2+ mobilisation.

journal_name

Platelets

journal_title

Platelets

authors

Alarayyed NA,Prichard BN,Betteridge DJ,Smith CC

doi

10.1080/09537109777519

subject

Has Abstract

pub_date

1997-01-01 00:00:00

pages

31-6

issue

1

eissn

0953-7104

issn

1369-1635

pii

MF7HVVYPQK4C91BE

journal_volume

8

pub_type

杂志文章
  • SIRT1 prevents pulmonary thrombus formation induced by arachidonic acid via downregulation of PAF receptor expression in platelets.

    abstract::SIRT1, a class III histone deacetylase, is critically involved in cellular response to stress and modulates cardiovascular risk factors. However, its role in thrombus formation is largely unknown. Thus, this study investigated the effect of SIRT1 on pulmonary thrombus formation, and then identified its role in the mod...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.1080/09537104.2016.1190005

    authors: Kim YH,Bae JU,Kim IS,Chang CL,Oh SO,Kim CD

    更新日期:2016-12-01 00:00:00

  • Aspirin, platelet inhibition and cancer prevention.

    abstract::Several lines of evidence are consistent with the hypothesis that activated platelets contribute to colorectal tumorigenesis and metastatization through direct cell-cell interactions and the release of different lipid and protein mediators, and microvesicles. This review examines the clinical pharmacology of low-dose ...

    journal_title:Platelets

    pub_type: 杂志文章,评审

    doi:10.1080/09537104.2018.1492105

    authors: Patrignani P,Patrono C

    更新日期:2018-12-01 00:00:00

  • The role of platelet activation in determining response to therapy in patients with primary nephrotic syndrome.

    abstract::To test the role of platelet activation in the prognosis of nephrotic syndrome (NS), we evaluated the mean platelet volume (MPV) in patients with NS undergoing treatment. In this prospective, multicenter clinical study 156 patients with primary NS under treatment were assigned and followed for one year. Patients were ...

    journal_title:Platelets

    pub_type: 杂志文章,多中心研究

    doi:10.3109/09537104.2012.731111

    authors: Kocyigit I,Yilmaz MI,Simşek Y,Unal A,Sipahioglu MH,Eroglu E,Dede F,Tokgoz B,Oymak O,Utas C

    更新日期:2013-01-01 00:00:00

  • Activation of Phospholipase C as a Primary Target of the Thromboxane A(2)-mediated Amplification Mechanism in Thrombin-induced Rabbit Platelet Activation.

    abstract::The inhibitory effects of a cyclooxygenase inhibitor, indomethacin, and a thromboxane (TX) A(2) receptor antagonist, S-145, on thrombin-stimulated rabbit platelet responses were examined for their contribution to the TXA-mediated amplification mechanism. Although thrombin (0.01-0.3 U/ml) induced the dosedependent aggr...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.3109/09537109409006037

    authors: Kawamura M,Huang A,Harada Y,Katori M

    更新日期:1994-01-01 00:00:00

  • Immature platelet fraction related parameters in the differential diagnosis of thrombocytopenia.

    abstract::The pathogenesis of thrombocytopenia can be divided into increased destruction (ID) of platelets in the peripheral blood and decreased production (DP) of platelets in the bone marrow. This study aimed to analyze the efficacy of immature platelet fraction (IPF) related parameters, including the IPF count (IPF#), IPF pe...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.1080/09537104.2019.1678118

    authors: Li J,Li Y,Ouyang J,Zhang F,Liang C,Ye Z,Chen S,Cheng J

    更新日期:2020-08-17 00:00:00

  • Factor VIII is a positive regulator of platelet function.

    abstract::FVIII is an important cofactor in the tenase coagulation factor complex, lack of FVIII causes severe bleeding, whereas high FVIII levels seem to be associated with venous and arterial thromboembolism. Resting platelets do not bind FVIII, but activated platelets bind unactivated FVIII if vWF is not present. We investig...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.1080/09537100600747035

    authors: Obergfell A,Sturm A,Speer CP,Walter U,Grossmann R

    更新日期:2006-11-01 00:00:00

  • Novel mutations in GP IIb gene in Glanzmann's thrombasthenia from India.

    abstract::The integrin GPIIb-IIIa plays an important role in platelet activation and plug formation. Quantitative and qualitative dysfunction in this receptor causes Glanzmann's thrombasthenia (GT) and leads to a bleeding tendency. Mutations in the GPIIb or GPIIIa gene are known to be responsible for the inherited form of this ...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.1080/09537100802434861

    authors: Vijapurkar M,Ghosh K,Shetty S

    更新日期:2009-02-01 00:00:00

  • The effect of erythropoietin on platelet and endothelial activation markers: a prospective trial in healthy volunteers.

    abstract::Erythropoietin (EPO) enhances formation of red blood cells and also affects thrombopoiesis and platelet function. We hypothesized that the effect of EPO may be reflected by changes in thromboxane B2 (TXB2) and endothelial cell function. Six male and six female subjects received recombinant human epoetin alpha (Erypo®)...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.3109/09537104.2011.631621

    authors: Heinisch BB,Vcelar B,Kapiotis S,Blann A,Wolzt M,Siller-Matula JM,Jilma B

    更新日期:2012-01-01 00:00:00

  • Platelet serotonin transporter (5HTt): physiological influences on kinetic characteristics in a large human population.

    abstract::The present study had two goals: first, to give a detailed description of a reliable method for full kinetic analysis of serotonin transporter (5HTt) on the membrane of human platelets, and second, as a main issue, to report on physiological influences on kinetic characteristics of this transmembrane transport on a la...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.3109/09537104.2010.487582

    authors: Banović M,Bordukalo-Niksić T,Balija M,Cicin-Sain L,Jernej B

    更新日期:2010-01-01 00:00:00

  • The association of P2Y12 inhibitors with pro-coagulatory extracellular vesicles and microRNAs in stable coronary artery disease.

    abstract::Extracellular vesicles (EV) act as a cellular communication tool by carrying lipids, proteins and micro RNA (miR) between cells, thereby playing a pivotal role in thromboembolic processes. The effect of P2Y12 inhibitors on pro-coagulatory, phosphatidylserine (PS)-expressing EV has been investigated previously, but onl...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.1080/09537104.2019.1648780

    authors: Haller PM,Stojkovic S,Piackova E,Andric T,Wisgrill L,Spittler A,Wojta J,Huber K,Jäger B

    更新日期:2020-05-18 00:00:00

  • Interactions of platelets with Synthocytes, a novel platelet substitute.

    abstract::A platelet substitute, Synthocytes, is being developed for the prevention and treatment of thrombocytopenia. Synthocytes are composed of fibrinogen adsorbed on heat stabilised albumin microcapsules of defined size. The purpose of this study was to perform experiments in vitro to investigate the capacity of Synthocytes...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.1080/0953371027000

    authors: Davies AR,Judge HM,May JA,Glenn JR,Heptinstall S

    更新日期:2002-06-01 00:00:00

  • High plasma levels of adipocytokines are associated with platelet activation in patients with coronary artery disease.

    abstract::Previous studies suggested that the adipocytokines, adiponectin and leptin, are associated with the progression and prognosis of coronary artery disease (CAD). The aim of this study was to differentially evaluate plasma levels of adiponectin and leptin in patients with CAD and their association with conventional labor...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.3109/09537100903377584

    authors: Bigalke B,Stellos K,Geisler T,Seizer P,Mozes V,Gawaz M

    更新日期:2010-01-01 00:00:00

  • Predicting metabolic syndrome by using hematogram models in elderly women.

    abstract:BACKGROUND:Low-grade inflammatory status was thought to be a major underlying mechanism in MetS. White blood cell (WBC) count was one of the inflammatory markers identified to be associated with MetS. Moreover, not only WBC but also hemoglobin (Hb) and platelet (PLT) were all associated with MetS. OBJECTIVE:In this st...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.3109/09537104.2013.780017

    authors: Liu H,Hsu CH,Lin JD,Hsieh CH,Lian WC,Wu CZ,Pei D,Chen YL

    更新日期:2014-01-01 00:00:00

  • Tetraspanin-Fc receptor interactions.

    abstract::The tetraspanins are a superfamily of membrane glycoproteins which facilitate the interaction of membrane and intracellular signalling molecules (e.g., integrins, pro-growth factors and their receptors, protein kinase-C) in the formation of membrane signalling microdomains (sometimes referred to as the tetraspanin web...

    journal_title:Platelets

    pub_type: 杂志文章,评审

    doi:10.1080/09537100400004363

    authors: Moseley GW

    更新日期:2005-02-01 00:00:00

  • Development of a high-yield expression and purification system for platelet factor 4.

    abstract::Heparin-induced thrombocytopenia (HIT) is an adverse drug reaction characterized by IgG antibodies bound to complexes of platelet factor 4 (PF4) and heparin. The majority of diagnostic tests for HIT rely on an exogenous source of PF4 to identify anti-PF4/heparin antibodies. These include the PF4-dependent enhanced ser...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.1080/09537104.2017.1378808

    authors: Huynh A,Arnold DM,Moore JC,Smith JW,Kelton JG,Nazy I

    更新日期:2018-05-01 00:00:00

  • Effects of beta2-glycoprotein-I on platelet aggregation in cord versus adult whole blood.

    abstract::We present a peculiarity of the neonatal hemostatic system that might contribute to establish a procoagulant readiness in neonatal blood by sensitizing neonatal platelets for ADP stimulation. beta2-glycoprotein-I (beta2-GP-I) is a plasma constituent capable of suppressing ADP-induced platelet aggregation. We found sig...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.1080/09537100600800529

    authors: Cvirn G,Gallistl S,Koestenberger M,Kutschera J,Ferstl U,Kellner J,Jurgens G,Gries A

    更新日期:2007-02-01 00:00:00

  • Diversity of signaling underlying responses mediated by selective activation of the platelet thromboxane A2 (TXA2) receptor; pharmacological and kinetic studies in vitro.

    abstract::Selective activation of the platelet TXA2 receptor is sufficient to mediate concurrent aggregation, deaggregation and shape change (SC) responses without activation of known Gi-coupled receptors (Platelets 2003; 14: 89). However, Gi-coupled receptor activation strongly influences the hemostasis response in vivo. This ...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.1080/09537100310001612380

    authors: Maayani S,Schwarz TE,Patel ND,Craddock-Royal BD,Tagliente TM

    更新日期:2003-09-01 00:00:00

  • A deleterious effect of aspirin on the antithrombotic properties of endothelial cells is not observed with platelets previously exposed to aspirin: studies in a flow system.

    abstract::We have explored both the independent and combined effects of aspirin on cultured endothelial cells and platelets, and its influence on platelet deposition onto an extracellular matrix. Blood was circulated through a flat perfusion chamber with two coverslips placed sequentially with respect to blood flow. The first c...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.3109/09537109609079506

    authors: Alemany M,Hernández MR,Bozzo J,Bono A,Escolar G,Ordinas A,Bastida E

    更新日期:1996-01-01 00:00:00

  • Thrombin generation test for evaluation of antiplatelet treatment in patients with coronary artery disease after percutaneous coronary intervention.

    abstract::To study the possibility of using thrombin generation tests in platelet-rich and platelet-poor plasma for evaluation of dual antiplatelet therapy efficacy in patients with coronary artery disease (CAD), following percutaneous coronary intervention. Venous blood was analyzed from CAD patients aged 53-75 years who had u...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.1080/09537104.2017.1294680

    authors: Berezovskaya G,Smirnova O,Malev E,Khromov-Borisov N,Klokova E,Karpenko M,Papayan L,Petrishchev N

    更新日期:2018-03-01 00:00:00

  • Effects of a single bout of strenuous exercise on platelet activation in female ApoE/LDLR-/- mice.

    abstract::Strenuous physical exercise leads to platelet activation that is normally counterbalanced by the production of endothelium-derived anti-platelet mediators, including prostacyclin (PGI2) and nitric oxide (NO). However, in the case of endothelial dysfunction, e.g. in atherosclerosis, there exists an increased risk for i...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.1080/09537104.2016.1254764

    authors: Przyborowski K,Kassassir H,Wojewoda M,Kmiecik K,Sitek B,Siewiera K,Zakrzewska A,Rudolf AM,Kostogrys R,Watala C,Zoladz JA,Chlopicki S

    更新日期:2017-11-01 00:00:00

  • Apoptotic markers in human blood platelets treated with peroxynitrite.

    abstract::Platelets are anucleated cells that upon activation by agonists or during storage may develop apoptotic events. The role of peroxynitrite and its reactive intermediates in apoptotic process in blood platelets is unknown. In order to study the appearance of biomarkers of apoptosis in platelets after treatment with pero...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.1080/09537100802406646

    authors: Wachowicz B,Rywaniak JZ,Nowak P

    更新日期:2008-12-01 00:00:00

  • Thrombocytopenia model with minimal manipulation of blood cells allowing whole blood assessment of platelet function.

    abstract::In vitro models of thrombocytopenia are useful research tools. Previously published models have shortcomings altering properties of platelets and other blood components. The aim of the present study was to develop a whole blood method to induce thrombocytopenia with minimal manipulation, and to describe platelet funct...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.3109/09537104.2015.1095873

    authors: Tiedemann Skipper M,Rubak P,Halfdan Larsen O,Hvas AM

    更新日期:2016-06-01 00:00:00

  • Usefulness of the mean platelet volume for predicting new-onset atrial fibrillation after isolated coronary artery bypass grafting.

    abstract::Postoperative atrial fibrillation (AF) is a common complication of coronary artery bypass grafting (CABG). The mean platelet volume (MPV) is an important marker of platelet activity and is associated with cardiovascular risk factors. We investigated whether the MPV is associated with the development of AF after CABG. ...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.3109/09537104.2013.767443

    authors: Erdem K,Ayhan S,Ozturk S,Bugra O,Bozoglan O,Dursin H,Yazici M,Daglar B

    更新日期:2014-01-01 00:00:00

  • Simultaneous genotyping of HPA-17w to -21w by PCR-SSP in Chinese Cantonese.

    abstract::Studies have reported the polymorphism of human platelet antigen (HPA)-17w, -18w, -19w, -20w, and -21w. However, the distribution of these five antigens in Chinese Cantonese is still unknown. In this study, we designed new sequence-specific primers for HPA-19w to -21w and used published primers for HPA-17w and -18w to...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.3109/09537104.2014.887668

    authors: Zhou H,Ding H,Chen Y,Li X,Ye X,Nie Y

    更新日期:2015-01-01 00:00:00

  • The Fluid-phase SC5b-9 Terminal Complement Complex Binds to the GPIIb/IIIa Complex of Thrombin-stimulated Human Blood Platelets Inhibiting Platelet Aggregation.

    abstract::We have investigated interactions between human blood platelets and the vitronectin-containing fluid-phase terminal complement complex, the SC5b-9, which is a non-cytolytic variant of the membrane attack complex C%9(m). SC5b-9 affinity for the platelet membrane glycoprotein IIb/IIIa (GPIIb/IIIa) complex was demonstrat...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.3109/09537109509013269

    authors: Røger M,Høgåsen K,Holme PA,Halstensen TS,Mollnes TE,Hovig T

    更新日期:1995-01-01 00:00:00

  • Platelet activation in subjects with impaired glucose tolerance.

    abstract::Impaired glucose tolerance (IGT), a prediabetic state, is associated with an increased risk of cardiovascular disease. Mean platelet volume (MPV), a determinant of platelet activation, is a newly emerging risk factor for atherothrombosis. This study was designed to answer the following questions: (i) Do MPV levels cha...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.1080/09537100701609019

    authors: Coban E,Kucuktag S,Basyigit S

    更新日期:2007-12-01 00:00:00

  • Aspirin intake in the morning is associated with suboptimal platelet inhibition, as measured by serum Thromboxane B2, during infarct-prone early-morning hours.

    abstract::Aspirin is traditionally taken once daily in the morning and considered to be effective throughout the 24h interval. Cardiovascular events occur most frequently in the early morning, suggesting that these hours are critical in terms of adequate platelet inhibition. This study therefore assed platelet function in the e...

    journal_title:Platelets

    pub_type: 杂志文章,随机对照试验

    doi:10.1080/09537104.2018.1528347

    authors: Racca C,van Diemen JJK,Fuijkschot WW,Spit K,Bonten TN,Numans ME,van der Bom JG,Smulders YM,Thijs A

    更新日期:2019-01-01 00:00:00

  • Influence of platelet count and activity on thromboelastography parameters.

    abstract::It has been suggested that thromboelastography TEG) can help in limiting or directing the appropriate use of blood products during surgery. However, the contribution of platelets to the TEG profile has not been studied in detail. Blood was taken from eight healthy subjects and eight patients with peripheral arterial d...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.1080/0953710031000118849

    authors: Bowbrick VA,Mikhailidis DP,Stansby G

    更新日期:2003-06-01 00:00:00

  • Original article: relaxin reduces the number of circulating platelets and depresses platelet release from megakaryocytes: studies in rats.

    abstract::In previous studies we have shown that relaxin (RLX), a peptide hormone produced predominantly during pregnancy, is a powerful inhibitor of platelet aggregation. The current study shows that RLX, given systemically to rats, also affects the number of circulating platelets and their release by spleen megakaryocytes. Ma...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.3109/09537109509078467

    authors: Bani D,Maurizi M,Bigazzi M

    更新日期:1995-01-01 00:00:00

  • GATA-1, G208S macrothrombocytes are deficient in talin: immunofluorescence studies.

    abstract::Previous investigations from our laboratory identified the ultrastructural pathology and cytochemistry of macrothrombocytes (MTC) from patients with the X-linked, G208S varient of the GATA-1 mutation.A subsequent biochemical study of the MTC cytoskeletal proteins using polyacrylamide gel electrophoresis and western bl...

    journal_title:Platelets

    pub_type: 杂志文章

    doi:10.1080/09537100902818344

    authors: White JG,Burris SM,Crowe BR

    更新日期:2009-05-01 00:00:00