Sex differences in peripheral and local immune responses following spinal cord injury - Report - MDSpire

Sex differences in peripheral and local immune responses following spinal cord injury

  • By

  • Sara Rito-Fernandes

  • Andreia Monteiro

  • Maria M. Moura

  • Juliana Fiúza-Fernandes

  • Sara M. Pinto

  • Marta F. Lima

  • João L. Afonso

  • Inês Pereira

  • Bárbara Carneiro-Pereira

  • Luís S. Fernandes

  • Filipa Ferreira-Antunes

  • Ana T. Palha

  • André Vidinha-Mira

  • António J. Salgado

  • Nuno A. Silva

  • Susana Monteiro

  • May 25, 2026

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Clinical Report: Gender Variations in Immune Reactions After Spinal Cord Injury

Overview

This study investigates the influence of biological sex on immune responses following spinal cord injury (SCI). It reveals significant differences in immune cell dynamics between males and females, particularly in the acute phase post-injury, which may affect recovery outcomes.

Background

Understanding the role of biological sex in immune responses after SCI is crucial, as it can inform treatment strategies and improve patient outcomes. Most preclinical studies have focused on female models, potentially skewing our understanding of male responses. This research highlights the need for sex-inclusive studies to address these gaps.

Data Highlights

No numerical data available in the provided source.

Key Findings

  • Males show higher frequencies of circulating myeloid cells acutely after SCI.
  • Females have a greater number of myeloid cells in the spinal cord, indicating delayed infiltration in males.
  • Females initiate a favorable tissue repair response earlier than males.
  • Sex differences in blood CD54 expression suggest ongoing immune response development post-injury.
  • Long-term functional recovery is comparable between sexes despite initial differences in recovery rates.

Clinical Implications

Clinicians should consider biological sex when assessing immune responses and recovery trajectories in SCI patients. This understanding may guide personalized therapeutic approaches and improve management strategies for both male and female patients.

Conclusion

Biological sex significantly influences immune responses after SCI, with implications for recovery and treatment strategies. Future research should prioritize sex-inclusive methodologies to enhance clinical relevance.

Related Resources & Content

  1. Intensive Care Medicine, 2007 -- Impact of Subarachnoid Haemorrhage on the Innate Immune System Response
  2. Frontiers in Immunology, 2026 -- The immune dysregulation landscape and dynamic regulation of competing endogenous RNAs in spinal cord injury
  3. Acta Neuropathologica, 2011 -- The Role of Fas/FasL in Apoptosis and Inflammation as Critical Elements of Acute Human Spinal Cord Injury: Insights for Clinical Translation
  4. Frontiers in Medicine, 2026 -- Factors Associated with Hyponatremia in Patients with Acute Spinal Cord Injury: A Systematic Review and Meta-Analysis
  5. AO Spine Clinical Practice Recommendations for the Surgical Management of Acute Traumatic Spinal Cord Injury: Contemporary Concepts - Illinois Experts
  6. A Clinical Practice Guideline for the Management of Patients With Acute Spinal Cord Injury: Recommendations on Hemodynamic Management
  7. Minimum technical standards and recommendations for spinal cord injury management in emergencies
  8. Clinical Safety: Preventing Catheter-associated Urinary Tract Infections (CAUTIs) | UTI | CDC
  9. Effects of Biological Sex on Access to Care and Outcomes After Acute Spinal Cord Injury: A Series of Propensity Score-Matched Cohort Studies
  10. Sex-dependent effects of peptidylarginine deiminases on neutrophil function and long-term outcomes after spinal cord injury
  11. AO Spine Clinical Practice Recommendations for the Surgical Management of Acute Traumatic Spinal Cord Injury: Contemporary Concepts - Illinois Experts
  12. Immune Activation Following Spinal Cord Injury: A Review Focused on Inflammatory Changes in the Spinal Cord - PubMed
  13. The sodium-glutamate antagonist riluzole improves outcome after acute spinal cord injury: results from the RISCIS randomised controlled trial analysed using a global statistical analytic technique - PMC
  14. Safety and efficacy of intrathecal antibodies to Nogo-A in patients with acute cervical spinal cord injury: a randomised, double-blind, multicentre, placebo-controlled, phase 2b trial - ScienceDirect

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