antiplatelet/hypoxia

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Transforming growth factor-beta(1) restores antiplatelet function of endothelial cells exposed to anoxia-reoxygenation injury.

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Transforming growth factor-beta(1) released from platelet alpha-granules may preserve endothelial functions in injured vessels. However, direct evidence is lacking regarding how this cytokine modifies the antithrombotic function of injured endothelial cells. We performed an in vitro study to

Impaired antiplatelet effects of aspirin associated with hypoxia and ATP release from erythrocytes. Studies in a system with flowing human blood.

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BACKGROUND We have explored how hypoxic conditions may affect the antiplatelet effects of aspirin. METHODS For this purpose, a perfusion system containing a damaged vessel segment was modified in order to induce hypoxia (low Po2) in flowing blood. Blood samples were incubated with 50 mumol L-1

Effects of aspirin plus alpha-tocopherol on brain slices damage after hypoxia-reoxygenation in rats with type 1-like diabetes mellitus.

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Diabetes mellitus is a risk factor for cerebrovascular ischemic disease. Aspirin (acetylsalicylic acid) is the most widely used drug for the secondary prevention of thrombotic phenomena. It has been also recently demonstrated that alpha-tocopherol influenced in vitro the antiplatelet effect of

Antioxidant effects of a single dose of acetylsalicylic acid and salicylic acid in rat brain slices subjected to oxygen-glucose deprivation in relation with its antiplatelet effect.

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The aim of the present study was to analyze the relative participation of the antiplatelet and the antioxidant effects of acetylsalicylic acid (ASA) and salicylic acid (SA) after a single dose (1 or 10 mg/kg i.p.) in an in vitro model of anoxia in slices of rat brain. After 20 min of drug

In vitro hypoxia of cortical and hippocampal CA1 neurons: glutamate, nitric oxide, and platelet activating factor participate in the mechanism of selective neural death in CA1 neurons.

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We prepared neuron-rich cultures from cortical and hippocampal CA1 regions of postnatal day 1 (P1) rats. Using these cultures, we investigated the sensitivity of neurons to hypoxic insults. The effects of MK-801, cycloheximide, NG-nitro-L-arginine (L-NNA), and anti-platelet-activating factor

Nicorandil enhances the effect of endothelial nitric oxide under hypoxia-reoxygenation: role of the KATP channel.

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Nicorandil increased the anti-platelet aggregation activity of endothelial cells when endothelial cells were exposed to hypoxia-reoxygenation conditions. However, nicorandil (0.1-10 muM) did not inhibit platelet aggregation directly. The mechanism by which nicorandil increases the anti-aggregation

[Increased resistance to hypoxia under the effect of the mixture of herbs from the Altai].

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We investigated the antihypoxic effect of herb mixture <> from the Altai in an experiment with rats. This mixture of herbs contains bioflavonoids. Also, it has antioxidant, anti-inflammatory, antispasmodic, angioprotective and antiplatelet properties. The animals received decoction of herbs

Anti-platelet agents reduce morphological changes of chronic hypoxic pulmonary hypertension.

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The pathophysiologic mechanism by which chronic hypoxia causes pulmonary hypertension is unknown. If anti-platelet agents, or other pharmacologic interventions, altered the pulmonary vascular changes induced by hypoxia, information concerning the pathogenesis of the pulmonary hypertension or the

Fc-saxatilin suppresses hypoxia-induced vascular leakage by regulating endothelial occludin expression.

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Vascular leakage due to compromised integrity of the endothelial barrier is closely associated with brain damage in several neurological disorders, including ischaemic stroke. Saxatilin, a snake venom disintegrin containing the Arg-Gly-Asp (RGD) motif, exerts thrombolytic and antiplatelet effects by

Versatile pharmacological actions of YC-1: anti-platelet to anticancer.

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Since the first article on YC-1 was published in 1994, it has been popularly used as a pharmacological tool to activate soluble guanylate cyclase and to increase cyclic GMP levels in cultured cells or isolated tissues. In terms of the pharmacological actions of YC-1, previous studies tend to be

Osteopontin mediates hypoxia-induced proliferation of cultured mesangial cells: role of PKC and p38 MAPK.

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BACKGROUND We previously reported that hypoxia induces the proliferation of cultured mesangial cells mediated by the stimulation of intracellular calcium and the activation of protein kinase C (PKC). In the present study, we examined the roles of mesangial cell specific growth factors

Cilostazol inhibits the redistribution of the actin cytoskeleton and junctional proteins on the blood-brain barrier under hypoxia/reoxygenation.

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Cilostazol is a selective inhibitor of cyclic nucleotide phosphodiesterase 3 (PDE3), which induces a vasodilatoric antiplatelet effect. In the present study, we investigated the impact of cilostazol on the blood-brain barrier (BBB), while focusing on the actin cytoskeleton (F-actin), the

Hypoxia and Ischemia Promote a Maladaptive Platelet Phenotype.

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OBJECTIVE Reduced blood flow and tissue oxygen tension conditions result from thrombotic and vascular diseases such as myocardial infarction, stroke, and peripheral vascular disease. It is largely assumed that while platelet activation is increased by an acute vascular event, chronic vascular

Enhanced platelet inhibition treatment improves hypoxemia in patients with severe Covid-19 and hypercoagulability. A case control, proof of concept study

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Patients affected by severe coronavirus induced disease-2019 (Covid-19) often experience hypoxemia due to alveolar involvement and endothelial dysfunction, which leads to the formation of micro thrombi in the pulmonary capillary vessels. Both hypoxemia and a prothrombotic diathesis have been

Prostaglandin E1 protects cardiomyocytes against hypoxia-reperfusion induced injury via the miR-21-5p/FASLG axis.

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Prostaglandin-E1 (PGE1) is a potent vasodilator with anti-inflammatory and antiplatelet effects. However, the mechanism by which PGE1 contributes to the amelioration of cardiac injury remains unclear.This study was designed to investigate how PGE1 protects

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