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Stroke-Induced Peripheral Immune Dysfunction in Vitamin D-Deficient Conditions: Modulation by Progesterone and

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Vitamin D deficiency worsens stroke outcomes and delays recovery. Combined progesterone and vitamin D treatment shows promise for improving stroke recovery in deficient patients.

Keywords:
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Area of Science:

  • Neuroscience
  • Immunology
  • Endocrinology

Background:

  • Vitamin D deficiency (Ddef) is linked to altered stroke morphology and outcomes.
  • The interplay between Ddef, post-stroke systemic inflammation, and therapeutic interventions requires further investigation.

Purpose of the Study:

  • To investigate the interaction of Ddef with post-stroke systemic inflammation.
  • To evaluate the efficacy of progesterone (P) and vitamin D (D) administration, alone or in combination, in improving stroke outcomes in Ddef rats.

Main Methods:

  • Stroke was induced in Ddef rats with lipopolysaccharide (LPS)-induced systemic inflammation.
  • Rats received P, D, or vehicle treatment for 4 days.
  • Behavioral tests, assessment of neuronal markers (inflammation, ER stress, oxidative stress, white matter integrity, apoptosis), and immune cell analysis were performed.

Main Results:

  • Ddef significantly worsened stroke outcomes and peripheral immune dysfunction compared to D-sufficient (Dsuf) rats.
  • Systemic inflammation exacerbated stroke injury, with more severe effects in Ddef rats.
  • Both P and D monotherapy improved functional outcomes, but combination therapy yielded superior results.

Conclusions:

  • Ddef is a significant comorbidity that worsens stroke outcomes and impairs functional recovery.
  • Combined P and D treatment demonstrates potential as a therapeutic strategy for stroke patients with vitamin D deficiency.