Resumo

SAROTTO, Aníbal J. et al. Expresión de proteínas inducibles por frío en la médula espinal de rata sometida a hipotermia sistémica. Rev. Asoc. Argent. Ortop. Traumatol. [online]. 2022, vol.87, n.3, pp.393-403. ISSN 1852-7434.  http://dx.doi.org/https://doi.org/10.15417/issn.1852-7434.2022.87.3.1488.

Introduction: Traumatic spinal cord injury is the main cause of motor disability in developed and underdeveloped countries, being a priority interest to the WHO. The effect of hypothermia on the expression of CIRBP (cold-activated protein) in the anterior grey column of 60-day-old male albino Sprague-Dawley rats was studied at the structural and biochemical levels and proposed as a possible therapeutic approach. Materials and Methods: 24 rats were randomly divided into two groups; normothermia (n = 6), at 24° C, and hypothermia, (n = 18) at 8° C for 180 minutes and euthanized at 12, 24, and 48 h post-treatment. Western blot and immunohistochemistry for CIRBP were used. Results: A progressive increase in the expression of CIRBP was observed from 12 to 48 hours, with statistically significant values after 24 and 48 hours compared to controls. Conclusion: This experimental model demonstrated efficacy, accessibility, and economy to generate systemic hypothermia, which provides a novel range of therapeutic strategies. The increase in the expression of cold-inducible proteins in the rats’ spinal cords allows us to study the benefit of hypothermia at the molecular level for the first time, being of utmost importance for therapeutic studies in spinal cord injuries.

Palavras-chave : Hypothermia; spinal cord; CIRBP; rat.

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