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The mitogen-activated protein (MAP) kinase cascades regulate a variety of cellular activities, including cell growth, proliferation, and apoptosis, and are reported to play a role in the actions of antidepressant treatment. There are a number of different classes of protein phosphatases that could
Recent studies indicate that stimulation of NMDA receptors in cultured hippocampal cells activates MAP kinase. Although the pathway whereby MAP kinase is activated has been been characterized, little is known about the mechanisms that shut off MAP kinase. In the course of analyzing several
Recurrent seizure activity leads to delayed neuronal death as well as to inflammatory responses involving microglia in hippocampal subfields CA1, CA3 and CA4. Since mitogen activated protein (MAP) kinases control neuronal apoptosis and trigger generation of inflammatory cytokines, their activation
We describe a patient diagnosed with lethal perinatal hypophosphatasia with a unique clinical presentation of convulsions that responded to vitamin B6. Genomic DNA sequence analysis of the tissue-nonspecific alkaline phosphatase (TNSALP) gene revealed two missense mutations: a G-to-A transition
Neutral and alkaline phosphatase activities were studied in small synaptosomes isolated from rat brain and cerebellum after administration of the convulsant 3-mercaptopropionic acid (MP). Cerebral cortex phosphatase activity assayed at pH 7.2 in the presence of K+ increased both during and after
Pyridoxine-responsive seizures (PRS) and the role of pyridoxine (PN, vitamin B(6)) in hypophosphatasia (HPP) are incompletely understood. Typically, PRS and HPP are rare, independent, metabolic disorders. In PRS, seizures resist standard anticonvulsants apart from PN, yet have a good prognosis. In
In humans, deficiency of the tissue non-specific alkaline phosphatase (TNAP) gene is associated with defective skeletal mineralization. In contrast, mice lacking TNAP generated by homologous recombination using embryonic stem (ES) cells have normal skeletal development. However, at approximately two
SYNJ1 encodes a polyphosphoinositide phosphatase, synaptojanin 1, which contains two consecutive phosphatase domains and plays a prominent role in synaptic vesicle dynamics. Autosomal recessive inherited variants in SYNJ1 have previously been associated with two different neurological diseases: a
Febrile seizures (FSs) are the most common types of seizures in young children. However, little is known whether the memory deficits induced by early-life FSs could transmit across generations or not.The memory functions of different generations of FS rats Defects in phosphatase and tensin homolog (PTEN) are associated with neurological disorders and tumors. PTEN functions at two primary intracellular locations: the plasma membrane and the nucleus. At the membrane, PTEN functions as a phosphatidylinositol (3,4,5)-trisphosphate phosphatase and
Conditional deletion of Pten (phosphatase and tensin homolog on chromosome ten) in differentiated cortical and hippocampal neurons in the mouse results in seizures, macrocephaly, social interaction deficits and anxiety, reminiscent of human autism spectrum disorder. Here we extended our previous
Hypophosphatasia (HPP) is a rare metabolic disease with the hallmark finding of deficient serum tissue nonspecific alkaline phosphatase (TNSALP) activity. TNSALP is primarily known for its role in mineralization; hence, HPP is characterized by defective mineralization of bone and/or teeth. TNSALP is
OBJECTIVE
The liver plays a major role in the metabolism and elimination of many antiepileptic drugs (AEDs), including perampanel. Some of the metabolites identified for perampanel are likely formed via reactive intermediates, which have the potential to covalently bind to protein and cause