Abstract:
:In membranes of rat striatum, phorbol 12-myristate 13-acetate (PMA), a potent activator of Ca2+/phospholipid-dependent protein kinase, enhanced adenylate cyclase activity by counteracting the inhibition elicited by GTP. Exposure to pertussis toxin caused a similar alteration of the GTP-regulation of the enzyme activity and largely prevented the PMA effects. PMA treatment increased by threefold the GTP requirement of acetylcholine-induced inhibition of adenylate cyclase activity but did not affect the GTP-dependence of the enzyme stimulation by dopamine. The hydrolysis of GTP by membrane-bound high affinity GTPase was significantly inhibited by PMA (IC 50 10 nM) in a Ca2(+)-dependent manner. Like PMA, phorbol 12,13-dibutyrate inhibited the GTPase activity, whereas the biologically inactive 4-beta phorbol 13-acetate and 4-beta phorbol were without effect. These results suggest that activation of Ca2+/phospholipid-dependent protein kinase by PMA stimulates adenylate cyclase activity by impairing the activity of the GTP-dependent inhibitory protein, possibly through a reduction of the GTP-GDP exchange.
journal_name
Neurochem Resjournal_title
Neurochemical researchauthors
Olianas MC,Onali Pdoi
10.1007/BF01101712subject
Has Abstractpub_date
1990-11-01 00:00:00pages
1109-14issue
11eissn
0364-3190issn
1573-6903journal_volume
15pub_type
杂志文章abstract::Glucocorticoid receptors (GRs) exert actions on the hippocampus that are important for memory formation. There are correlations between vascular dysfunctions and GR-related gene expression. Both vascular dysfunction and GR gene expression decline occur during the ageing process. Therefore, hypotensors, which have effe...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-017-2366-x
更新日期:2017-11-01 00:00:00
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journal_title:Neurochemical research
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更新日期:2016-06-01 00:00:00
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pub_type: 杂志文章
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更新日期:2016-11-01 00:00:00
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journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF00970775
更新日期:1988-10-01 00:00:00
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journal_title:Neurochemical research
pub_type: 杂志文章,评审
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更新日期:2003-06-01 00:00:00
abstract::We examined the role of hippocampal metabotropic glutamate receptor 5 (mGlu5) in spatial learning and memory. Although it has been shown that mGlu5 signalling is required for certain forms of learning and memory, its role in spatial learning is unclear since studies using pharmacological or knockout mice models provid...
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pub_type: 杂志文章
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更新日期:2015-06-01 00:00:00
abstract::Parkinson's disease (PD) is a neurodegenerative disorder of dopaminergic, noradrenergic, and serotonergic systems, in which dopamine, noradrenaline, and serotonin levels are depleted and lead to the development of motor and non-motor symptoms such as tremor, bradykinesia, weight changes, fatigue, depression, and visua...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-020-03130-y
更新日期:2020-11-01 00:00:00
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journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-008-9832-4
更新日期:2009-05-01 00:00:00
abstract::Recent evidence suggests that young rodents submitted to high fructose (FRU) diet develop metabolic, and cognitive dysfunctions. However, it remains unclear whether these detrimental effects of FRU intake can also be observed in middle-aged mice. Nine months-old C57BL/6 female mice were fed with water (Control) or 10%...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-020-03135-7
更新日期:2020-12-01 00:00:00
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journal_title:Neurochemical research
pub_type: 杂志文章,评审
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更新日期:2013-05-01 00:00:00
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journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF00967290
更新日期:1992-11-01 00:00:00
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journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-009-9951-6
更新日期:2009-09-01 00:00:00
abstract::Rett syndrome (RS) is an X-linked neurodevelopmental disorder mostly involving mutations in the gene for methyl-CpG-binding protein 2 (MECP2). Ganglioside abnormalities were previously found in cerebrum and cerebellum in RS patients. We evaluated total lipid distribution in cerebrum/brainstem, hippocampus, and cerebel...
journal_title:Neurochemical research
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doi:10.1007/s11064-008-9874-7
更新日期:2009-06-01 00:00:00
abstract::Planarians are rapidly developing into very useful research subjects in pharmacology and neuroscience research. Here we report that curare, a cholinergic nicotinic receptor antagonist, alleviates the nicotine-induced planarian seizure-like movements (pSLM) by up to 50 % at equimolar concentrations of nicotine and cura...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-015-1512-6
更新日期:2015-10-01 00:00:00
abstract::Hippocampal cells dissociated from 5-day-old rat pups were grown in a suitable chemically defined basal medium, supplemented or not with 3,3',5-triiodo-L-thyronine (T3), [Arg8]-vasopressin (AVP), or both, at different concentrations. Four days after plating, neuron-like cells began to degenerate drastically in the bas...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF00965924
更新日期:1989-10-01 00:00:00
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pub_type: 杂志文章
doi:10.1007/s11064-015-1753-4
更新日期:2016-04-01 00:00:00
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journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-014-1312-4
更新日期:2014-07-01 00:00:00
abstract::The pathophysiology of cerebral oedema (CE) in diabetic ketoacidosis (DKA) remains enigmatic. We investigated the role of the idiogenic osmol taurine and aquaporin channels in an in vitro model, the SH-SY5Y neuroblastoma cell line, by sequentially mimicking DKA-like hyperglycemia/hypertonicity and hypotonic fluid ther...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-011-0598-8
更新日期:2012-01-01 00:00:00
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journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-009-9929-4
更新日期:2009-08-01 00:00:00
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journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-015-1604-3
更新日期:2015-07-01 00:00:00
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journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-020-03138-4
更新日期:2020-12-01 00:00:00
abstract::A prominent feature of brain pathology in Alzheimer's disease is a robust activation of the neuronal lysosomal system and major cellular pathways converging on the lysosome, namely, endocytosis and autophagy. Recent studies that identify a disturbance of the endocytic pathway as one of the earliest known manifestation...
journal_title:Neurochemical research
pub_type: 杂志文章,评审
doi:10.1023/a:1007675508413
更新日期:2000-10-01 00:00:00
abstract::5- and 6-Hydroxydopamine, which we had earlier identified as naturally occurring amines in human urine, were quantified in Parkinson's patients treated with L-DOPA, Parkinson's patients whose treatment did not include L-DOPA and in age matched controls. Analysis was carried out by GC-MS of the ditrifluoromethylbenzoyl...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF00978370
更新日期:1993-11-01 00:00:00
abstract::Regional and developmental changes in metabolite concentrations were measured by 1H NMR spectroscopy and HPLC of perchloric acid extracts from rat brain and eye. The highest concentrations of N-acetylaspartate were found in grey matter as opposed to white matter with concentration increasing with age from neonate to a...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF02532417
更新日期:1996-09-01 00:00:00
abstract::The spontaneously hypertensive rat (SHR) has been proposed as an animal model for attention-deficit hyperactivity disorder (ADHD). The behavioural problems have been suggested to be secondary to altered reinforcement mechanisms in which nucleus accumbens dopaminergic activity plays an important role. Interaction betwe...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF00973098
更新日期:1995-04-01 00:00:00
abstract::Abnormally high levels of iron are observed in the brain of patients suffering from neurodegenerative disorders. The mechanisms involved in iron accumulation in neurodegenerative disorders remain poorly understood. In the present study we investigated the effects of aging and neonatal iron overload on the mRNA express...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-009-0100-z
更新日期:2010-04-01 00:00:00
abstract::Anesthetics such as propofol can provide neuroprotective effects against cerebral ischemia. However, the underlying mechanism of this beneficial effect is not clear. Therefore, we subjected male Sprague-Dawley rats to 2 h of middle cerebral artery occlusion and investigated how post-ischemic administration of propofol...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/s11064-012-0945-4
更新日期:2013-03-01 00:00:00
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journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1023/a:1022424707543
更新日期:1998-02-01 00:00:00
abstract::The experiments reported in this paper address the hypothesis that [3H]leucine enkephalin labels both mu and delta receptors. As reported by other workers, this peptide dissociates from rat brain membranes in a biphasic manner. This is consistent with a two site binding model which hypothesizes that the peptide labels...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF00963918
更新日期:1983-02-01 00:00:00
abstract::The long-acting opiate antagonist naltrexone hydrochloride was administered by intraperitoneal injection, in a dose response protocol, to adult rats. The drug was used to observe effects of opiate receptor blockade on cells of the pituitary gland and adjacent hypothalamus. At higher drug doses (5 mg/kg or 10 mg/kg), n...
journal_title:Neurochemical research
pub_type: 杂志文章
doi:10.1007/BF00964168
更新日期:1984-02-01 00:00:00