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1 ored microcirculatory blood flow and reduced TXA2 .
2 achidonic acid to synthesize thromboxane A2 (TxA2).
3 mportant agonists, including thromboxane A2 (TXA2).
4 vasoconstricting prostanoid thromboxane A2 (TXA2).
5 istinct eicosanoids, such as thromboxane A2 (TXA2).
6 mmatory drugs (NSAIDs), inhibit PGI2 but not TxA2.
7 vivo and specifically limits the response to TxA2.
8 th a concomitant rise in the vasoconstrictor TxA2.
9 creted their granular contents nor generated TXA2.
10 81067, without affecting the contribution of TXA2.
11 abolished the mitogenic effects of 5-HT and TXA2.
12 membrane receptors transduce the effects of TxA2.
13 esion coincident with augmented formation of TxA2.
14 orresponding increase in the biosynthesis of TxA2.
15 a mechanism independent of platelet-derived TXA2.
16 ote inflammation and restrain the effects of TxA2.
18 inary excretion of major metabolites of both TxA2, 2,3-dinor TxB2 (Tx-M), and PGI2, 2,3-dinor 6-keto
19 rome P450 enzyme catalyzing the synthesis of TxA2, a potent modulator of vascular smooth muscle contr
21 was no difference in the contraction by the TXA2 agonist U46619, or TP receptor expression in arteri
25 ry wave of platelet aggregation induced by a TXA2 analog and thrombin receptor-activating peptides th
27 , we present a novel finding that the stable TXA2 analogue, U46619, induces two waves of platelet sec
29 ore, a high level of collagen can cause weak TxA2 and ADP-independent aggregation, but maximal aggreg
31 and enhances production of bioactive lipids (TXA2 and isoprostanes) which act through the thromboxane
33 had nearly complete (99.7%) loss of platelet TXA2 and significantly suppressed levels of macrophage a
34 tal muscle of the hindlimb are stimulated by TxA2 and that the release of TxA2 in skeletal muscle cou
35 PLCgamma2 phosphorylation is potentiated by TxA2 and that TxA2 plays a critical role in the most pro
36 t ridogrel abolished the mitogenic effect of TXA2 and the interaction between 5-HT and TXA2 without a
38 oconstrictor prostaglandins, thromboxane A2 (TXA2 ) and prostaglandin F2alpha (PGF2alpha ), on skin m
39 secondary mediators such as thromboxane A2 (TxA2) and ADP, which are agonists for G-protein-coupled
41 elease of secondary agonists such as ADP and TxA2, and 4) can be initiated by at least some members o
43 nces in PVAT function in which PGF2alpha and TXA2 antagonists can inhibit the PVAT-induced vasoconstr
44 est that most of the recognized functions of TXA2 are mediated by the single known Tp gene locus.
50 dense granules and generate thromboxane A2 (TXA2), but platelets adhering to acid soluble monomeric
51 xane A2 (TXA2), we examined whether 5-HT and TXA2 can induce SMC proliferation and whether there is s
52 rictive prostanoids, such as thromboxane A2 (TXA2 ), contributes to endothelial dysfunction and incre
55 , but not celecoxib, significantly inhibited TxA2-dependent aggregation, induced ex vivo by arachidon
56 K members, Lyn or Fyn, were defective in the TXA2-dependent second wave of platelet aggregation induc
58 PGI2]) and vasoconstricting (thromboxane A2 [TxA2]) eicosanoids may be important in preeclampsia, but
63 st that GPVI is directly associated with the TXA2 generating system during platelet-collagen interact
66 Furthermore, inhibition of 2-MeSADP-induced TxA2 generation by fibrinogen receptor antagonist was no
71 ependent adhesion, they completely inhibited TXA2 generation under both divalent cation-dependent and
73 hways, and both 2-MeSADP- and AYPGKF-induced TxA2 generation was significantly diminished in Pyk2-def
74 tin polymerization inhibitors did not reduce TXA2 generation, but rather accelerated platelet aggrega
75 ther GIRK subunits contribute to ADP-induced TXA2 generation, via the regulation of the Src and cPLA2
76 ion of ADP-induced cPLA2 phosphorylation and TXA2 generation, without affecting the conversion of AA
82 because granular secretion, Thromboxane A2 (TxA2) generation, as well as fibrinogen receptor activat
84 ride) and inflammatory cytokines (especially TxA2, IL-1 beta, PGE2, and TNF-alpha) which serve to ini
85 e stimulated by TxA2 and that the release of TxA2 in skeletal muscle could evoke cardiorespiratory re
86 contributes to the increased biosynthesis of TxA2 in smokers, most likely from inflammatory cells.
89 nosine diphosphate (ADP), or thromboxane A2 (TXA2), in addition to their recognized roles in ADP- and
92 Protein kinase C (PKC) inhibitors attenuated TxA2-induced desensitization of wild type receptors, but
95 peripheral vascular beds in the rat and that TXA2 is a major prostanoid formed in the normal rat lung
101 enic response in tissues exposed to elevated TXA2 levels in which revascularization is important.
102 OX-1 and -2) and prostaglandins and at least TXA2, may mediate the drugs cardiovascular effects.
105 odel for the prevention and treatment of the TXA2-mediated thrombosis involved in strokes and myocard
106 t phenylephrine stimulated production of the TXA2 metabolite TXB2, which was increased in eNOS(-/-) c
107 ssium, plasma concentrations of TXB2 (stable TXA2 metabolite) and PGF2alpha , soluble cell adhesion m
111 whereas the effect of TXA2 (U46619, a stable TXA2 mimetic) on inducing proliferation of SMCs was obse
113 R-P cells after prolonged stimulation with a TxA2 mimetic, those in the TxA2R-E cells increased marke
114 ere designed to test the hypothesis that the TxA2 mimetic, U46,619, would stimulate group III and IV
116 of 5-HT and its synergistic interaction with TXA2 on SMC proliferation was abolished by a 5-HT2 recep
117 esize prostaglandin E2 (PGE2) PGI2 > PGF2a > TxA2, only PGI2 enhanced RMIC viability following hypert
118 n, without affecting the conversion of AA to TXA2 or ADP-induced primary platelet aggregation in aspi
119 the rate of catalytic conversion of PGH2 to TXA2 or MDA was at least 15,000 s(-1) and the lower limi
121 omerization reaction to form thromboxane A2 (TXA2) or a fragmentation reaction to form 12-l-hydroxy-5
122 preferential inhibition of platelet-derived TXA2 over protective vascular-derived prostacyclin (PGI2
124 sphorylation is potentiated by TxA2 and that TxA2 plays a critical role in the most proximal event of
126 these conditions to enable thrombin-induced TxA2 production and adenosine diphosphate secretion, nec
128 r both bt/VWF-mediated agglutination-induced TxA2 production and GPIb-dependent stable arterial throm
129 Because most trials using aspirin to reduce TxA2 production have failed to prevent preeclampsia, it
131 GPIb-mediated agglutination that results in TxA2 production is dependent on Bruton tyrosine kinase (
132 e that bt/VWF-mediated agglutination-induced TxA2 production is dependent on signaling apparently ini
134 not to be required for agglutination-driven TxA2 production or activation of alphaIIbbeta3, but were
136 gen-induced platelet signaling, the roles of TxA2 production, adenosine diphosphate (ADP) and dense-g
137 ression and PGI2 synthesis, had no effect on TXA2 production, and decreased cell numbers by 50%, indi
139 t reduced PGI2 production, but not increased TxA2 production, occurs many months before clinical onse
143 nds, including COX-1 (but not COX-2)-derived TxA2, promote initiation and early progression of athero
145 ism of purinergic receptors (suramin+RB2) or TXA2 receptor (SQ29548), or by intratracheal apyrase.
146 r thromboxane A2 (TxA2), we created a mutant TxA2 receptor (TP receptor) in which serines at position
148 pressed in mice genetically deficient in the TxA2 receptor (TP) or treated with a TP antagonist.
151 ligand and immunoaffinity chromatography, 2) TXA2 receptor activation stimulates GTPgammaS binding to
152 separate experiments, it was found that the TXA2 receptor agonist U46619 stimulated [35S]guanosine 5
153 ed as potent dual-acting agents to block the TXA2 receptor and to inhibit the thromboxane synthase (T
156 o Galpha13, and 3) Galpha13 affinity for the TXA2 receptor can be modulated by agonist-receptor activ
159 irect evidence that endogenous Galpha13 is a TXA2 receptor-coupled G-protein, as: 1) its alpha-subuni
162 S18886 is an orally active thromboxane A2 (TXA2) receptor (TP) antagonist in clinical development f
164 upled agonist receptors, the thromboxane A2 (TXA2) receptor, and protease-activated receptors (PARs).
167 ation of a high level of expression of C-His-TxA2 receptors and a rapid purification procedure follow
168 haq and Galpha13 are functionally coupled to TXA2 receptors and dissociate upon agonist activation.
169 (C-His) was ligated to the alpha-isoform of TxA2 receptors and expressed in COS-7 and Chinese hamste
172 affinity methods, in vivo phosphorylation of TXA2 receptors by cyclic GMP was demonstrated from 32P-l
173 that in addition to Galphaq, purification of TXA2 receptors by ligand (SQ31,491)-affinity chromatogra
174 de mapping studies of in vivo phosphorylated TXA2 receptors demonstrated cGMP mediates phosphorylatio
175 let inhibition by NO, activation of platelet TXA2 receptors in the presence of cGMP was studied.
177 to catalyze the phosphorylation of platelet TXA2 receptors in vitro, but not Galphaq copurifying wit
178 he relationship of structure to function for TxA2 receptors is limited because of their low levels of
179 r evidence for functional coupling of G13 to TXA2 receptors was provided in studies where solubilized
180 lets deficient in PLC gamma 2, G alpha q, or TxA2 receptors, as well as platelets treated with a prot
190 ced Erk2 phosphorylation and thromboxane A2 (TXA2) release were completely blocked by PP2, an Src fam
191 by a SOD mimetic or antagonists of COX-1 or TxA2-S but normalized by antagonists of COX-2 or TP-R.
192 clooxygenase (COX), thromboxane A2 synthase (TxA2-S), thromboxane prostanoid receptors (TP-Rs), or su
194 r-cGMP) potently inhibited activation of the TXA2-specific GTPase in platelet membranes in a concentr
197 mbination of a 5-HT2 receptor antagonist and TXA2 synthase inhibitor/receptor may be useful for atten
198 the cGMP signaling pathway independently of TXA2 synthesis and also indicate that Lyn is critically
199 e in selectively mediating GPIb-IX-dependent TXA2 synthesis and thrombosis and represents a potential
200 inhibitor] or furegrelate [a thromboxane A2 (TXA2) synthesis inhibitor] 5 min prior to the injection
202 boxane synthase (TxS), and the receptors for TxA2 (the TP), PGF2alpha (the FP), and PGI2 (the IP) wer
204 w-found interaction between the LPA/LPA1 and TXA2/TP pathways plays significant roles in vasoregulati
205 tration of 100 nmol/L, whereas the effect of TXA2 (U46619, a stable TXA2 mimetic) on inducing prolife
209 tization of the receptor for thromboxane A2 (TxA2), we created a mutant TxA2 receptor (TP receptor) i
210 se both serotonin (5-HT) and thromboxane A2 (TXA2), we examined whether 5-HT and TXA2 can induce SMC
211 din endoperoxide (PGH2) into thromboxane A2 (TxA2) which plays a crucial role in hemostasis and cardi
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