Abstract：
:Sequential 31P and 1H nuclear magnetic resonance spectra were measured for neonatal piglets (n = 7) to determine the relationship between brain intracellular pH (pHi), lactate, and phosphorylated energy metabolites during partial ischemia. Simultaneous determinations of arterial and cerebral venous blood gases, pH, O2 content, and plasma concentrations of glucose and lactate were also made. Ischemia, induced by bilateral carotid artery ligation plus hemorrhagic hypotension for 35 min, resulted in variable reductions in ATP, phosphocreatine, and increases in Pi, H+, and lactate relative to control levels. In four piglets, whose arterial blood glucose rose above control, brain lactate exceeded 20 mumol g-1 with corresponding decreases in pHi of greater than 0.7 units compared to control levels. The extents of brain acidosis and lactosis showed a strong linear correlation with each other (r = 0.94). Maximal changes in brain lactate, pHi, and ATP at the end of ischemia showed significant positive linear correlations with the control levels of arterial blood glucose, but did not correlate with arterial glucose or arterial cerebral-venous glucose difference values during ischemia. The relationship between pHi and buffer base deficit was comparable to results reported for adult animals up to 20 mumol ml-1. However, in contrast to models proposed for adult brain, the continued linear relationship between pH and higher buffer base levels is most consistent with a theoretical model that assumes the presence of weak acid buffers with pKa values from 6.7 to 5.2.
journal_name
J Neurochemjournal_title
Journal of neurochemistryauthors
Corbett RJ,Laptook AR,Nunnally RL,Hassan A,Jackson Jdoi
10.1111/j.1471-4159.1988.tb01118.xsubject
Has Abstractpub_date
1988-11-01 00:00:00pages
1501-9issue
5eissn
0022-3042issn
1471-4159journal_volume
51pub_type
杂志文章abstract：:Calcium-activated neutral proteases (calpains) are regulated by specific endogenous protein inhibitors, the calpastatins, which are widely distributed in mammalian tissues. Calpastatins from different species or in various tissues from the same species exhibit considerable size heterogeneity on sodium dodecyl sulfate ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1995.64020859.x
更新日期：1995-02-01 00:00:00
abstract：:Near total inhibition of brain adenosine deaminase (ADA) activity in rats injected with the potent ADA inhibitor 2'-deoxycoformycin (DCF) was previously shown to reduce enzyme activity for up to 50 days during which time the enzyme exhibited reduced sensitivity to in vivo inhibition by DCF. Here, we investigated the b...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1992.tb09739.x
更新日期：1992-02-01 00:00:00
abstract：:Tan-67 is a selective non-peptidic δ-opioid receptor (DOR) agonist that confers neuroprotection against cerebral ischemia/reperfusion (I/R)-caused neuronal injury in pre-treated animals. In this study, we examined whether post-ischemic administration of Tan-67 in stroke mice is also neuroprotective and whether the tre...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.14265
更新日期：2018-02-01 00:00:00
abstract：:Cyclin-dependent kinase 5 (Cdk5) is a Ser/Thr kinase that plays an important role in the release of neurotransmitter from pre-synaptic terminals triggered by Ca(2+) influx into the pre-synaptic cytoplasm through voltage-dependent Ca(2+) channels (VDCCs). It is reported that Cdk5 regulates L-, P/Q-, or N-type VDCC, but...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.12746
更新日期：2014-08-01 00:00:00
abstract：:Alzheimer's disease (AD) is a neurodegenerative pathology characterized by aggregates of amyloid-β (Aβ) and phosphorylated tau protein, synaptic dysfunction, and spatial memory impairment. The Wnt signaling pathway has several key functions in the adult brain and has been associated with AD, mainly as a neuroprotectiv...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.14278
更新日期：2018-02-01 00:00:00
abstract：:Accumulations of the neuropeptides substance P (SP), somatostatin (ST), and vasoactive intestinal polypeptide (VIP) proximal to a crush in the cervical vagus nerve of the rat have been measured using sensitive radioimmunoassays. Each of the peptides was rapidly transport towards the peripheral terminals of vagal affer...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1980.tb04627.x
更新日期：1980-01-01 00:00:00
abstract：:Peroxynitrite, the product of the radical-radical reaction between nitric oxide and superoxide anion, is a potent oxidant involved in tissue damage in neurodegenerative disorders. We investigated the modifications induced by peroxynitrite in tyrosine residues of proteins from synaptosomes. Peroxynitrite treatment (> o...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1999.0730727.x
更新日期：1999-08-01 00:00:00
abstract：:We recently demonstrated that the presenilin-dependent gamma-secretase complex regulates the expression and activity of neprilysin, one of the main enzymes that degrade the amyloid beta-peptide (Abeta) which accumulates in Alzheimer's disease. Here, we examined the influence of endogenous nicastrin (NCT), a member of ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2006.03822.x
更新日期：2006-05-01 00:00:00
abstract：:Rho-kinase and myosin phosphatase are implicated in the phosphorylation-state of myosin light chain downstream of Rho, which is thought to induce smooth muscle contraction and stress fibre formation in non-muscle cells. Here, we found that microtubule-associated proteins, Tau and MAP2, interacted with the myosin-bindi...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2003.02054.x
更新日期：2003-11-01 00:00:00
abstract：:Microglia are activated in humans following infection with human immunodeficiency virus (HIV), and brain inflammation is thought to be involved in neuronal injury and dysfunction during HIV infection. Numerous studies indicate a role for the HIV regulatory protein Tat in HIV-related inflammatory and neurodegenerative ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2001.00511.x
更新日期：2001-09-01 00:00:00
abstract：:The critical hyaluronan binding motif (HABM) in sialoprotein associated with cones and rods (SPACR) has already been determined. As sialoproteoglycan associated with cones and rods, another interphotoreceptor matrix molecule, binds to chondroitin sulfate and heparin with or without the employment of HABMs, respectivel...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2008.05669.x
更新日期：2008-11-01 00:00:00
abstract：:Adenosine uptake by cerebral smooth muscle cells is a carrier-mediated process. The Km value for adenosine uptake is 10.0 microM and the Vmax is 0.95 nmol/min-mg cell protein. This uptake system is inhibited by the adenosine analog 2-chloroadenosine at low adenosine concentrations. These results prove the existence of...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1983.tb09037.x
更新日期：1983-10-01 00:00:00
abstract：:It is now clearly established that the brain has the capability of synthesizing various biologically active steroids including 17-hydroxypregnenolone (17OH-Delta(5)P), 17-hydroxyprogesterone (17OH-P), dehydroepiandrosterone (DHEA) and androstenedione (Delta(4)). However, the presence, distribution and activity of cyto...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2006.04209.x
更新日期：2007-01-01 00:00:00
abstract：:Purified rat brain Ca2+/calmodulin-dependent protein kinase II (CaM-kinase II) is stimulated by brain gangliosides to a level of about 30% the activity obtained in the presence of Ca2+/calmodulin (CaM). Of the various gangliosides tested, GT1b was the most potent, giving half-maximal activation at 25 microM. Gangliosi...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1990.tb13288.x
更新日期：1990-01-01 00:00:00
abstract：:Vascular endothelial growth factor (VEGF) is a neurotrophic factor essential for maintenance of motor neurons. Loss of this factor produces a phenotype similar to amyotrophic lateral sclerosis (ALS). We recently showed that ALS-producing mutations of Cu/Zn-superoxide dismutase (SOD1) disrupt post-transcriptional regul...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2008.05856.x
更新日期：2009-02-01 00:00:00
abstract：:The ability of cholinergic vesicles to incorporate acetylcholine (ACh) was studied using highly purified synaptic vesicles from Torpedo electric organ. Depleted vesicles were capable of rapidly taking up exogenous ACh. Evidence that this represented true incorporation was that labelled ACh comigrated with vesicular AT...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1981.tb00479.x
更新日期：1981-08-01 00:00:00
abstract：:Neuronal death due to excessive activation of N-methyl-d-aspartate (NMDA) receptors is a hallmark of neurodegenerative diseases. The polyamines: putrescine, spermine, and spermidine, bind to specific sites on the NMDA receptor and promote its activation, but their role in NMDA-induced neuronal death is ill defined. In...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2007.04843.x
更新日期：2007-11-01 00:00:00
abstract：:This study examined the respective influences of cannabinoid type-1 (CB1) receptors expressed either in forebrain GABAergic neurons, in cortical glutamatergic neurons, or in astrocytes on the turnover rates of the endocannabinoids N-arachidonoylethanolamide (AEA) and 2-arachidonoylglycerol (2-AG), and the non-cannabin...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.13044
更新日期：2015-04-01 00:00:00
abstract：:Epidermal growth factor (EGF) is a member of a structurally related family containing heparin-binding EGF-like growth factor (HB-EGF) and transforming growth factor alpha (TGFalpha) that exerts neurotrophic activity on midbrain dopaminergic neurons. To examine neurotrophic abnormality in Parkinson's disease (PD), we m...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2005.03073.x
更新日期：2005-05-01 00:00:00
abstract：:MicroRNAs (miRNAs) released from the activated microglia upon neurotropic virus infection may exacerbate the neuronal damage. Here, we identified let-7a and let-7b (let-7a/b) as one of the essential miRNAs over-expressed upon Japanese Encephalitis virus (JEV) infection and released in the culture supernatant of the JE...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.14645
更新日期：2019-05-01 00:00:00
abstract：:Cholinergic signaling plays an important role in regulating the growth and regeneration of axons in the nervous system. The α7 nicotinic receptor (α7) can drive synaptic development and plasticity in the hippocampus. Here, we show that activation of α7 significantly reduces axon growth in hippocampal neurons by coupli...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.12641
更新日期：2014-05-01 00:00:00
abstract：:Cyclic-AMP-binding proteins in membrane and soluble fractions from rat forebrain were compared; membrane fractions included smooth and rough microsomes and a plasma membrane fraction enriched in synaptic membranes. Protein fractions were treated with 8-azido-[32P]cyclic AMP and ultraviolet irradiation to covalently ta...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1984.tb00922.x
更新日期：1984-08-01 00:00:00
abstract：:The behavior of a microdialysis probe in vivo is mathematically described. A diffusion-reaction model is developed that not only accounts for transport of substances through tissues and probe membranes but also accounts for transport across the microvasculature and metabolism. Time-dependent equations are presented bo...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1991.tb02105.x
更新日期：1991-07-01 00:00:00
abstract：:A method has been developed for the simultaneous in vivo measurement of local rates for methionine incorporation into cerebral protein in the rat. It is based on the use of L-[35S]methionine as a tracer for reflecting the bidirectional exchange of methionine between plasma and brain and its incorporation into cerebral...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1987.tb04101.x
更新日期：1987-02-01 00:00:00
abstract：:Gliosis is commonly observed in the CNS following tissue damage, and it also occurs in aging and in many neurodegenerative diseases. Glial fibrillary acidic protein (GFAP) accumulation is a prominent feature of astrocytic gliosis. An inhibition or delay in GFAP synthesis could mitigate scar formation and thus reduce t...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1993.tb13660.x
更新日期：1993-10-01 00:00:00
abstract：:We examined changes in biosynthetic capacity of sciatic nerve during the early stages of Wallerian degeneration, utilizing a model that permits exclusion of nonresident cells from degenerating nerve. Sciatic nerve segments were placed in either 5-microns pore (allowing infiltration of nonresident cells) or 0.22-micron...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1989.tb01851.x
更新日期：1989-04-01 00:00:00
abstract：:Aggregation of conformation-abnormal peptides probably plays a key role in the pathogenesis of many neurodegenerative diseases. DSCR1 Down syndrome (DS) critical region 1, was identified from a chromosomal region (21q22.1-q22.2) for the clinical manifestations of DS when an extra-copy is present. We report that expres...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2003.02294.x
更新日期：2004-03-01 00:00:00
abstract：:It has been established that neurosteroids can either inhibit or enhance GABA(A) receptor activity. Although GABA is the main inhibitory neurotransmitter in the mammalian retina, the effects of neurosteroids on retinal GABAergic activity have not been investigated. The aim of this work was to study the neurochemical a...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2005.03321.x
更新日期：2005-09-01 00:00:00
abstract：:The in vitro and ex vivo effects of lithium on muscarinic cholinergic inositol phospholipid hydrolysis and muscarinic cholinergic inhibition of dopamine D1-receptor-stimulated cyclic AMP formation were examined in rat brain slices. Following chronic lithium feeding, carbachol-stimulated inositol phosphate accumulation...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1989.tb07366.x
更新日期：1989-08-01 00:00:00
abstract：:The in vivo biosynthesis of cholecystokinin (CCK) in subcortical regions of the rat brain was studied by intracisternal pulse injections of [35S]methionine. The rats were killed 1.0 or 1.5 h after the injection. Subcortical CCK extracted in boiling water and acetic acid was immunoabsorbed by an antiserum specific for ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1980.tb06290.x
更新日期：1980-08-01 00:00:00
