brain ischemia/phosphatase

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Neuroprotective effects of protein tyrosine phosphatase 1B inhibitor on cerebral ischemia/reperfusion in mice.

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Akt (Protein kinase B, PKB), a serine/threonine kinase, plays a critical role in cell development, growth, and survival. Akt phosphorylation mediates a neuroprotective effect against ischemic injury. Recently, a protein-tyrosine phosphatase-1B (PTP1B) inhibitor (KY-226) was developed to elicit

Intracerebroventricular injection of human prostatic acid phosphatase has potent neuroprotective effects against transient focal cerebral ischemia in rats.

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Though the potential use of adenosine as a neuroprotective agent has long been realized, there are currently no adenosine-based therapies for the prevention or treatment of cerebral ischemia and reperfusion injury. Prostatic acid phosphatase (PAP), an enzyme that has long served as a diagnostic

Curcumin treatment recovery the decrease of protein phosphatase 2A subunit B induced by focal cerebral ischemia in Sprague-Dawley rats.

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Curcumin provides various biological effects through its anti-inflammatory and antioxidant properties. Moreover, curcumin exerts a neuroprotective effect against ischemic condition-induced brain damage. Protein phosphatase 2A (PP2A) is a ubiquitous serine and threonine phosphatase with various cell

Src kinase up-regulates the ERK cascade through inactivation of protein phosphatase 2A following cerebral ischemia.

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BACKGROUND The regulation of protein phosphorylation requires a balance in the activity of protein kinases and protein phosphatases. Our previous data indicates that Src can increase ERK activity through Raf kinase in response to ischemic stimuli. This study examined the molecular mechanisms by

Prevention of JNK phosphorylation as a mechanism for rosiglitazone in neuroprotection after transient cerebral ischemia: activation of dual specificity phosphatase.

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Rosiglitazone, a synthetic peroxisome proliferator-activated receptor-γ (PPARγ) agonist, prevents cell death after cerebral ischemia in animal models, but the underlying mechanism has not been clarified. In this study, we examined how rosiglitazone protects neurons against ischemia. Mice treated

Effects of focal cerebral ischemia on inositol 1,4,5-trisphosphate 3-kinase and 5-phosphatase activities in rat cortex.

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Ins(1,4,5)P3 3-kinase and 5-phosphatase are important enzymes responsible for the metabolism of Ins(1,4,5)P3, a second messenger for mobilization of intracellular Ca2+ stores. Focal cerebral ischemia induced in Long Evans rats through occlusion of the right middle cerebral artery (MCA) and both

Changes and mechanisms of protein-tyrosine kinase and protein-tyrosine phosphatase activities after brain ischemia/reperfusion.

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OBJECTIVE To study the changes and mechanisms of protein-tyrosine kinase (PTK) and protein-tyrosine phosphatase (PTP) activities in the hippocamal synaptosome following cerebral ischemia/reperfusion (I/R) in gerbil. METHODS Transient (15 min) global ischemia was produced by bilateral carotid artery

Protein phosphatase 2A-negative regulation of the protective signaling pathway of Ca2+/CaM-dependent ERK activation in cerebral ischemia.

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Extracellular-signal-regulated kinase (ERK) undergoes rapid inactivation following the intense activation evoked by cerebral ischemia and reperfusion. However, the precise mechanism of this inactivation has not been elucidated. To investigate how phosphatases regulate the ERK cascade following

Involvement of the dual-specificity phosphatase M3/6 in c-Jun N-terminal kinase inactivation following cerebral ischemia in the rat hippocampus.

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The c-Jun N-terminal kinase (JNK) undergoes complete inactivation following the intense activation induced by cerebral ischemia and reperfusion in rat hippocampi. This study examines the molecular mechanism underlying JNK dephosphorylation and inactivation evoked by dual-specificity phosphates

Neuroprotection of gamma-aminobutyric acid receptor agonists via enhancing neuronal nitric oxide synthase (Ser847) phosphorylation through increased neuronal nitric oxide synthase and PSD95 interaction and inhibited protein phosphatase activity in cerebral ischemia.

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It is well documented that exitotoxicity induced by N-methyl-D-aspartate (NMDA) receptor activation plays a pivotal role in delayed neuronal death in the hippocampal CA1 region after transient global ischemia. However, the effect of gamma-aminobutyric acid (GABA) receptor activation is uncertain in

Expression and function of striatal enriched protein tyrosine phosphatase is profoundly altered in cerebral ischemia.

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Striatal enriched protein tyrosine phosphatase (STEP) acts in the central nervous system to dephosphorylate a number of important proteins involved in synaptic function including ERK and NMDA receptor subunits. These proteins are also linked to stroke, in which cerebral ischemia triggers a complex

Tyrosine kinase and tyrosine phosphatase participate in regulation of interactions of NMDA receptor subunit 2A with Src and Fyn mediated by PSD-95 after transient brain ischemia.

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In this study, we investigated the effects of protein tyrosine kinase (PTK) and protein tyrosine phosphatase (PTP) on the tyrosine phosphorylation of N-methyl-D-aspartate receptor subunit 2A (NR2A) and the interactions among NR2A, postsynaptic density protein 95 (PSD-95), Fyn/Src after brain

Serum Alkaline Phosphatase Level is Associated with Angiographic Vasospasm, Delayed Cerebral Ischemia-Caused Clinical Deterioration, and Functional Outcome After Aneurysmal Subarachnoid Hemorrhage.

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Alkaline phosphatase (ALP) has been implicated to be associated with poor outcome in ischemic stroke patients, yet its role in aneurysmal subarachnoid hemorrhage (aSAH) patients is unknown. The current study aimed to investigate the on-admission and short-term variation trend of ALP

Inhibition of MiR-122 Decreases Cerebral Ischemia-reperfusion Injury by Upregulating DJ-1-Phosphatase and Tensin Homologue Deleted on Chromosome 10 (PTEN)/Phosphonosinol-3 Kinase (PI3K)/AKT.

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BACKGROUND Ischemia-reperfusion injury is caused by a blood reperfusion injury in ischemic brain tissue, and usually occurs in the treatment stage of ischemic disease, which can aggravate brain tissue injury. MiR-122 is closely related to ischemia-reperfusion injury in the myocardium, kidney, and

Focal Cerebral Ischemia Reduces Protein Phosphatase 2A Subunit B Expression in Brain Tissue and HT22 Cells.

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Protein phosphatase 2A (PP2A) is a serine and threonine protein phosphatase that regulates cell cycle progression and apoptosis. PP2A is composed of various subunits. Among these subunits, subunit B plays an important role in the modulation of PP2A function in the brain. This study investigated PP2A

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