Monitoring of Short‐Term Erythropoietin Therapy in Rats with Acute Spinal Cord Injury Using Manganese‐Enhanced Magnetic Resonance Imaging. Issue 4 (16th December 2014)

• Record Type: Journal Article
• Authors: Freitag, Martin Thomas; Márton, Gábor; Pajer, Krisztián; Hartmann, Jens; Walder, Nadja; Rossmann, Markus; Parzer, Peter; Redl, Heinz; Nógrádi, Antal; Stieltjes, Bram
• Is Part Of: Journal of neuroimaging. Volume 25:Issue 4(2015)
• Page Start: 582
• Page End: 589
• Publication Date: 2014-12-16
• Subjects: Diagnostic imaging -- Periodicals; Nervous system -- Diseases -- Diagnosis -- Periodicals; Imagerie pour le diagnostic -- Périodiques; Système nerveux -- Maladies -- Diagnostic -- Périodiques; Imagerie médicale; Neuroimagerie; Neurologie; Système nerveux; Périodique électronique (Descripteur de forme); Ressource Internet (Descripteur de forme); 616.804754
• DOI: 10.1111/jon.12202
• Languages: English
• ISSNs: 1051-2284

Abstract

<abstract abstract-type="main"> <title>ABSTRACT</title> <sec id="jon12202-sec-0010" sec-type="section"> <title>BACKGROUND AND PURPOSE</title> <p>To evaluate the short‐term outcome of erythropoietin (EPO) therapy in rats with spinal cord injury (SCI) using manganese‐enhanced magnetic resonance imaging (MEMRI).</p> </sec> <sec id="jon12202-sec-0020" sec-type="section"> <title>METHODS</title> <p>Rats were divided in an EPO and a control group. Laminectomy at Th11 was performed, followed by SCI. MnCl<sub>2</sub> was applied into the cisterna magna and functional recovery was examined after injury using BBB‐scoring. Then, rats were euthanized and the spinal cord was extracted for MEMRI. Finally, histological analysis was performed and correlated with MEMRI.</p> </sec> <sec id="jon12202-sec-0030" sec-type="section"> <title>RESULTS</title> <p>EPO‐treated animals showed significantly better functional recovery (<italic>P</italic> = .008, <italic>r</italic> = .62) and higher mean signal‐to‐noise ratio (SNR) in MEMRI compared to controls for slices 10‐13 (<italic>P</italic> = .017, <italic>R</italic><sup>2</sup> = .31) at the level of the lesion epicenter. Functional recovery correlated significantly with higher SNR values, determined using the mean SNR between slices 10 and 13 (<italic>P</italic> = .047, <italic>R</italic><sup>2</sup> = .36). In this region, histology revealed a significantly decreased number of microglia cells and apoptosis in EPO‐treated animals.</p> </sec> <sec id="jon12202-sec-0040" sec-type="section"> <title>CONCLUSION</title> <p>MEMRI successfully depicts the therapeutic effect of EPO in early SCI that leads to a significant recovery in rats, a significantly reduced immune response and significantly reduced number of apoptotic cells at the height of the lesion epicenter.</p> </sec> </abstract>