Sex-related disparities in mobility, sensory function, and psychological outcomes in Wistar and Sprague-Dawley rats following spinal cord injury.

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Tác giả: Junrui Guo, Baicao Li, Yan Li, Song Liu, Guangzhi Ning, Cong Xing, Qi Zhang

Ngôn ngữ: eng

Ký hiệu phân loại: 620.199042 Engineering mechanics and materials

Thông tin xuất bản: United States : Experimental neurology , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 703787

Spinal cord injury (SCI) causes persistent motor, sensory, psychological, and bladder dysfunctions, with clinical evidence indicating better recovery in females compared to males. However, the mechanisms driving these sex-specific differences remain unclear. This study assessed sex- and strain-specific differences in recovery using Wistar and Sprague-Dawley (SD) rats. SCI was induced at the T10 spinal level via a contusion model, and functional recovery was evaluated through standardized tests for locomotion, sensory thresholds, psychological outcomes, and bladder function. Female rats demonstrated superior motor recovery, with higher Basso, Beattie & Bresnahan (BBB) scores and improved coordination, alongside improved sensory outcomes, evidenced by reduced mechanical pain sensitivity and longer thermal response latencies. Strain differences were observed, with SD rats exhibiting greater pain thresholds than Wistar rats. Females also showed improved bladder outcomes, including higher leak point pressure and reduced bladder volumes, while males displayed more pronounced depression-like behaviors. Cognitive performance did not differ significantly between sexes. These findings highlight sex-specific advantages in motor, sensory, and bladder function, as well as strain-dependent sensory differences, emphasizing the importance of considering sex and strain in designing targeted therapies for SCI rehabilitation.
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