ArticleThe journal of spinal cord medicine2013
Gene expression profiling of liver X receptor α and Bcl-2-associated X protein in experimental transection spinal cord-injured rats.
Article in The journal of spinal cord medicine, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundStudy of molecular responses to central nervous system injury would be helpful for controlling the harmful pathways post-injury and triggering the useful pathways required for the treatment of injury.
objectiveTo investigate the expression level of liver X receptor α (LXRα) which has anti-inflammatory effects and pro-apoptotic Bcl-2-associated X protein (Bax) upon spinal cord injury (SCI).
designTo induce SCI, transection was carried out at T9 level of male Wister rats. Approximately 8 mm of rostral, caudal, and epicenter tissues of injured sites in treated rats were chosen for quantitative real-time polymerase chain reaction at the 6, 24, and 72 hours, and 7 and 10 days post-surgery.
resultsOur results showed a complicated temporal and spatial pattern of alteration in LXRα and Bax mRNA expression levels after SCI. LXRα expression level followed a homologues pattern (additive and subtractive wave) with a difference in time at three areas of studied. Rostral, caudal, and epicenter expression patterns of Bax were dissimilar in these areas. Gradual increase in the expression of Bax without any decrease at the rostral area was observed, presumably indicating the active transcription process of this gene, regardless of its protein situation.
conclusionA time lapse significant change in Bax expression level was observed only in the epicenter of injury, emphasizing that apoptotic responses are limited to this area. Furthermore, an increase in LXRα transcription level was observed first in rostral area and then extended to epicentral and caudal areas, implying that inflammation responses extended from rostral to caudal areas.
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