Rapid GFAP and Iba1 expression changes in the female rat brain following spinal cord injury  

作　　者：Mawj Mandwie Jordan A.Piper Catherine A.Gorrie Kevin A.Keay Giuseppe Musumeci Ghaith Al-Badri Alessandro Castorina 

机构地区：[1]Laboratory of Cellular and Molecular Neuroscience(LCMN),School of Life Science,Faculty of Science,University of Technology Sydney,Sydney,NSW,Australia [2]Neural Injury Research Unit,School of Life Science,Faculty of Science,University of Technology Sydney,Sydney,NSW,Australia [3]School of Medical Sciences(Neuroscience),The University of Sydney,Sydney,NSW,Australia [4]Department of Biomedical and Biotechnological Sciences,Anatomy,Histology and Movement Sciences Section,School of Medicine,University of Catania,Catania,Italy

出　　处：《Neural Regeneration Research》2022年第2期378-385,共8页中国神经再生研究（英文版）

基　　金：The University of Technology Sydney(UTS)Start-up Research Grant 2018 funded this study(to AC)。

摘　　要：Evidence suggests that rapid changes to supporting glia may predispose individuals with spinal cord injury(SCI) to such comorbidities. Here, we interrogated the expression of astrocyte-and microglial-specific markers glial fibrillary acidic protein(GFAP) and ionized calcium binding adaptor molecule 1(Iba1) in the rat brain in the first 24 hours following SCI. Female Sprague-Dawley rats underwent thoracic laminectomy;half of the rats received a mild contusion injury at the level of the T10 vertebral body(SCI group), the other half did not(Sham group). Twenty-four hours post-surgery the amygdala, periaqueductal grey, prefrontal cortex, hypothalamus, lateral thalamus, hippocampus(dorsal and ventral) in rats were collected. GFAP and Iba1 m RNA and protein levels were measured by real-time quantitative polymerase chain reaction and Western blot. In SCI rats, GFAP m RNA and protein expression increased in the amygdala and hypothalamus. In contrast, gene and protein expression decreased in the thalamus and dorsal hippocampus. Interestingly, Iba1 transcripts and proteins were significantly diminished only in the dorsal and ventral hippocampus, where gene expression diminished. These findings demonstrate that as early as 24 hours post-SCI there are region-specific disruptions of GFAP and Iba1 transcript and protein levels in higher brain regions. All procedures were approved by the University of Technology Sydney Institutional Animal Care and Ethics Committee(UTS ACEC13-0069).

关 键 词：affective disorders ASTROCYTES glial fibrillary acidic protein ionized calcium binding adaptor molecule 1 memory MICROGLIA NEUROTRAUMA spinal cord injury 

分 类 号：R651.2[医药卫生—外科学]