Abstract:
:Thromboxane A2(TxA2) is a potent vasoconstrictor associated with cerebrovascular disease and is thought to be synthesized within tissues of the brain. In order to determine the cellular sources of TxA2 in the central nervous system (CNS), we measured the release of the stable metabolite TxB2 in cultures of mixed or highly enriched populations of brain glia. Using techniques which isolated large numbers of highly enriched microglia and astroglia, we found that only microglia release TxB2. Moreover, microglia, not astroglia, contain the requisite synthetic enzyme thromboxane synthase. Phagocytic signals and lipopolysaccharide are potent stimulants of microglial release of thromboxane, with lesser effects shown by platelet activating factor and substance P. We conclude that microglia, when activated, are the principal source of brain-derived thromboxane and may help to control vascular flow at sites of acute CNS injury.
journal_name
Neurochem Intjournal_title
Neurochemistry internationalauthors
Giulian D,Corpuz M,Richmond B,Wendt E,Hall ERdoi
10.1016/0197-0186(95)00140-9subject
Has Abstractpub_date
1996-07-01 00:00:00pages
65-76issue
1eissn
0197-0186issn
1872-9754pii
0197018695001409journal_volume
29pub_type
杂志文章abstract::Metabotropic glutamate receptors (mGluRs) are expressed in neural progenitor cells (NPCs) and may play important roles in the neurogenesis during embryonic development and adult brain repair following injuries. In the present study, we investigated the expression of metabotropic glutamate receptor 7 (mGluR7) and the p...
journal_title:Neurochemistry international
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journal_title:Neurochemistry international
pub_type: 杂志文章,评审
doi:10.1016/j.neuint.2009.02.021
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journal_title:Neurochemistry international
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pub_type: 杂志文章,评审
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journal_title:Neurochemistry international
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journal_title:Neurochemistry international
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journal_title:Neurochemistry international
pub_type: 杂志文章,评审
doi:10.1016/0197-0186(95)00097-6
更新日期:1996-04-01 00:00:00
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journal_title:Neurochemistry international
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journal_title:Neurochemistry international
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journal_title:Neurochemistry international
pub_type: 杂志文章
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